From 1ee2753422349723d27009f2f973d03289d430ab Mon Sep 17 00:00:00 2001 From: Jason Yan Date: Tue, 30 Mar 2021 19:47:27 +0800 Subject: scsi: core: Treat device offline as a failure When a SCSI device is offline a MODE SENSE command will return a result with only DID_NO_CONNECT set. In sd_read_write_protect_flag() only the status byte of the result is checked. Despite a returned status of DID_NO_CONNECT the command is considered successful and we read sdkp->write_prot from a buffer containing garbage. Modify scsi_status_is_good() to treat DID_NO_CONNECT as a failure case. Link: https://lore.kernel.org/r/20210330114727.234467-1-yanaijie@huawei.com Signed-off-by: Jason Yan Signed-off-by: Martin K. Petersen --- include/scsi/scsi.h | 54 +++++++++++++++++++++++++++-------------------------- 1 file changed, 28 insertions(+), 26 deletions(-) (limited to 'include') diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 246ced401683..7f392405991b 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -30,32 +30,6 @@ enum scsi_timeouts { */ #define SCAN_WILD_CARD ~0 -/** scsi_status_is_good - check the status return. - * - * @status: the status passed up from the driver (including host and - * driver components) - * - * This returns true for known good conditions that may be treated as - * command completed normally - */ -static inline int scsi_status_is_good(int status) -{ - /* - * FIXME: bit0 is listed as reserved in SCSI-2, but is - * significant in SCSI-3. For now, we follow the SCSI-2 - * behaviour and ignore reserved bits. - */ - status &= 0xfe; - return ((status == SAM_STAT_GOOD) || - (status == SAM_STAT_CONDITION_MET) || - /* Next two "intermediate" statuses are obsolete in SAM-4 */ - (status == SAM_STAT_INTERMEDIATE) || - (status == SAM_STAT_INTERMEDIATE_CONDITION_MET) || - /* FIXME: this is obsolete in SAM-3 */ - (status == SAM_STAT_COMMAND_TERMINATED)); -} - - /* * standard mode-select header prepended to all mode-select commands */ @@ -277,4 +251,32 @@ enum scsi_disposition { /* Used to obtain the PCI location of a device */ #define SCSI_IOCTL_GET_PCI 0x5387 +/** scsi_status_is_good - check the status return. + * + * @status: the status passed up from the driver (including host and + * driver components) + * + * This returns true for known good conditions that may be treated as + * command completed normally + */ +static inline int scsi_status_is_good(int status) +{ + if (host_byte(status) == DID_NO_CONNECT) + return 0; + + /* + * FIXME: bit0 is listed as reserved in SCSI-2, but is + * significant in SCSI-3. For now, we follow the SCSI-2 + * behaviour and ignore reserved bits. + */ + status &= 0xfe; + return ((status == SAM_STAT_GOOD) || + (status == SAM_STAT_CONDITION_MET) || + /* Next two "intermediate" statuses are obsolete in SAM-4 */ + (status == SAM_STAT_INTERMEDIATE) || + (status == SAM_STAT_INTERMEDIATE_CONDITION_MET) || + /* FIXME: this is obsolete in SAM-3 */ + (status == SAM_STAT_COMMAND_TERMINATED)); +} + #endif /* _SCSI_SCSI_H */ -- cgit v1.2.3 From b294ff3e34490f36233230e9ca70503d3924a6f3 Mon Sep 17 00:00:00 2001 From: Asutosh Das Date: Fri, 23 Apr 2021 17:20:16 -0700 Subject: scsi: ufs: core: Enable power management for wlun During runtime-suspend of ufs host, the SCSI devices are already suspended and so are the queues associated with them. However, the ufs host sends SSU (START_STOP_UNIT) to the wlun during runtime-suspend. During the process blk_queue_enter() checks if the queue is not in suspended state. If so, it waits for the queue to resume, and never comes out of it. Commit 52abca64fd94 ("scsi: block: Do not accept any requests while suspended") adds the check to see if the queue is in suspended state in blk_queue_enter(). Call trace: __switch_to+0x174/0x2c4 __schedule+0x478/0x764 schedule+0x9c/0xe0 blk_queue_enter+0x158/0x228 blk_mq_alloc_request+0x40/0xa4 blk_get_request+0x2c/0x70 __scsi_execute+0x60/0x1c4 ufshcd_set_dev_pwr_mode+0x124/0x1e4 ufshcd_suspend+0x208/0x83c ufshcd_runtime_suspend+0x40/0x154 ufshcd_pltfrm_runtime_suspend+0x14/0x20 pm_generic_runtime_suspend+0x28/0x3c __rpm_callback+0x80/0x2a4 rpm_suspend+0x308/0x614 rpm_idle+0x158/0x228 pm_runtime_work+0x84/0xac process_one_work+0x1f0/0x470 worker_thread+0x26c/0x4c8 kthread+0x13c/0x320 ret_from_fork+0x10/0x18 Fix this by registering ufs device wlun as a SCSI driver and registering it for block runtime-pm. Also make this a supplier for all other LUNs. This way the wlun device suspends after all the consumers and resumes after HBA resumes. This also registers a new SCSI driver for rpmb wlun. This new driver is mostly used to clear rpmb uac. [mkp: resolve merge conflict with 5.13-rc1 and fix doc warning] Fixed smatch warnings: Reported-by: kernel test robot Reported-by: Dan Carpenter Link: https://lore.kernel.org/r/4662c462e79e3e7f541f54f88f8993f421026d83.1619223249.git.asutoshd@codeaurora.org Reviewed-by: Adrian Hunter Co-developed-by: Can Guo Signed-off-by: Can Guo Signed-off-by: Asutosh Das Signed-off-by: Martin K. Petersen --- drivers/scsi/ufs/cdns-pltfrm.c | 2 + drivers/scsi/ufs/tc-dwc-g210-pci.c | 2 + drivers/scsi/ufs/ufs-debugfs.c | 6 +- drivers/scsi/ufs/ufs-debugfs.h | 2 +- drivers/scsi/ufs/ufs-exynos.c | 2 + drivers/scsi/ufs/ufs-hisi.c | 2 + drivers/scsi/ufs/ufs-mediatek.c | 12 +- drivers/scsi/ufs/ufs-qcom.c | 2 + drivers/scsi/ufs/ufs_bsg.c | 6 +- drivers/scsi/ufs/ufshcd-pci.c | 36 +- drivers/scsi/ufs/ufshcd.c | 703 ++++++++++++++++++++++++++----------- drivers/scsi/ufs/ufshcd.h | 33 ++ include/trace/events/ufs.h | 20 ++ 13 files changed, 573 insertions(+), 255 deletions(-) (limited to 'include') diff --git a/drivers/scsi/ufs/cdns-pltfrm.c b/drivers/scsi/ufs/cdns-pltfrm.c index 13d92043e13b..908ff39c4856 100644 --- a/drivers/scsi/ufs/cdns-pltfrm.c +++ b/drivers/scsi/ufs/cdns-pltfrm.c @@ -323,6 +323,8 @@ static const struct dev_pm_ops cdns_ufs_dev_pm_ops = { .runtime_suspend = ufshcd_pltfrm_runtime_suspend, .runtime_resume = ufshcd_pltfrm_runtime_resume, .runtime_idle = ufshcd_pltfrm_runtime_idle, + .prepare = ufshcd_suspend_prepare, + .complete = ufshcd_resume_complete, }; static struct platform_driver cdns_ufs_pltfrm_driver = { diff --git a/drivers/scsi/ufs/tc-dwc-g210-pci.c b/drivers/scsi/ufs/tc-dwc-g210-pci.c index 67a6a61154b7..ec4589afbc13 100644 --- a/drivers/scsi/ufs/tc-dwc-g210-pci.c +++ b/drivers/scsi/ufs/tc-dwc-g210-pci.c @@ -148,6 +148,8 @@ static const struct dev_pm_ops tc_dwc_g210_pci_pm_ops = { .runtime_suspend = tc_dwc_g210_pci_runtime_suspend, .runtime_resume = tc_dwc_g210_pci_runtime_resume, .runtime_idle = tc_dwc_g210_pci_runtime_idle, + .prepare = ufshcd_suspend_prepare, + .complete = ufshcd_resume_complete, }; static const struct pci_device_id tc_dwc_g210_pci_tbl[] = { diff --git a/drivers/scsi/ufs/ufs-debugfs.c b/drivers/scsi/ufs/ufs-debugfs.c index ced9ef4d7c78..4e1ff209b933 100644 --- a/drivers/scsi/ufs/ufs-debugfs.c +++ b/drivers/scsi/ufs/ufs-debugfs.c @@ -13,7 +13,7 @@ void __init ufs_debugfs_init(void) ufs_debugfs_root = debugfs_create_dir("ufshcd", NULL); } -void __exit ufs_debugfs_exit(void) +void ufs_debugfs_exit(void) { debugfs_remove_recursive(ufs_debugfs_root); } @@ -60,14 +60,14 @@ __acquires(&hba->host_sem) up(&hba->host_sem); return -EBUSY; } - pm_runtime_get_sync(hba->dev); + ufshcd_rpm_get_sync(hba); return 0; } static void ufs_debugfs_put_user_access(struct ufs_hba *hba) __releases(&hba->host_sem) { - pm_runtime_put_sync(hba->dev); + ufshcd_rpm_put_sync(hba); up(&hba->host_sem); } diff --git a/drivers/scsi/ufs/ufs-debugfs.h b/drivers/scsi/ufs/ufs-debugfs.h index 3ca29d30460a..97548a3f90eb 100644 --- a/drivers/scsi/ufs/ufs-debugfs.h +++ b/drivers/scsi/ufs/ufs-debugfs.h @@ -9,7 +9,7 @@ struct ufs_hba; #ifdef CONFIG_DEBUG_FS void __init ufs_debugfs_init(void); -void __exit ufs_debugfs_exit(void); +void ufs_debugfs_exit(void); void ufs_debugfs_hba_init(struct ufs_hba *hba); void ufs_debugfs_hba_exit(struct ufs_hba *hba); void ufs_debugfs_exception_event(struct ufs_hba *hba, u16 status); diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c index 70647eacf195..8b31efb9d035 100644 --- a/drivers/scsi/ufs/ufs-exynos.c +++ b/drivers/scsi/ufs/ufs-exynos.c @@ -1267,6 +1267,8 @@ static const struct dev_pm_ops exynos_ufs_pm_ops = { .runtime_suspend = ufshcd_pltfrm_runtime_suspend, .runtime_resume = ufshcd_pltfrm_runtime_resume, .runtime_idle = ufshcd_pltfrm_runtime_idle, + .prepare = ufshcd_suspend_prepare, + .complete = ufshcd_resume_complete, }; static struct platform_driver exynos_ufs_pltform = { diff --git a/drivers/scsi/ufs/ufs-hisi.c b/drivers/scsi/ufs/ufs-hisi.c index 0aa58131e791..a47334974109 100644 --- a/drivers/scsi/ufs/ufs-hisi.c +++ b/drivers/scsi/ufs/ufs-hisi.c @@ -574,6 +574,8 @@ static const struct dev_pm_ops ufs_hisi_pm_ops = { .runtime_suspend = ufshcd_pltfrm_runtime_suspend, .runtime_resume = ufshcd_pltfrm_runtime_resume, .runtime_idle = ufshcd_pltfrm_runtime_idle, + .prepare = ufshcd_suspend_prepare, + .complete = ufshcd_resume_complete, }; static struct platform_driver ufs_hisi_pltform = { diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c index a981f261b304..9912e208c2a1 100644 --- a/drivers/scsi/ufs/ufs-mediatek.c +++ b/drivers/scsi/ufs/ufs-mediatek.c @@ -810,12 +810,10 @@ static int ufs_mtk_post_link(struct ufs_hba *hba) /* enable unipro clock gating feature */ ufs_mtk_cfg_unipro_cg(hba, true); - /* configure auto-hibern8 timer to 10ms */ - if (ufshcd_is_auto_hibern8_supported(hba)) { - ufshcd_auto_hibern8_update(hba, - FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, 10) | - FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3)); - } + /* will be configured during probe hba */ + if (ufshcd_is_auto_hibern8_supported(hba)) + hba->ahit = FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, 10) | + FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3); ufs_mtk_setup_clk_gating(hba); @@ -1097,6 +1095,8 @@ static const struct dev_pm_ops ufs_mtk_pm_ops = { .runtime_suspend = ufshcd_pltfrm_runtime_suspend, .runtime_resume = ufshcd_pltfrm_runtime_resume, .runtime_idle = ufshcd_pltfrm_runtime_idle, + .prepare = ufshcd_suspend_prepare, + .complete = ufshcd_resume_complete, }; static struct platform_driver ufs_mtk_pltform = { diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c index 2a3dd21da6a6..9b1d18d7c9bb 100644 --- a/drivers/scsi/ufs/ufs-qcom.c +++ b/drivers/scsi/ufs/ufs-qcom.c @@ -1551,6 +1551,8 @@ static const struct dev_pm_ops ufs_qcom_pm_ops = { .runtime_suspend = ufshcd_pltfrm_runtime_suspend, .runtime_resume = ufshcd_pltfrm_runtime_resume, .runtime_idle = ufshcd_pltfrm_runtime_idle, + .prepare = ufshcd_suspend_prepare, + .complete = ufshcd_resume_complete, }; static struct platform_driver ufs_qcom_pltform = { diff --git a/drivers/scsi/ufs/ufs_bsg.c b/drivers/scsi/ufs/ufs_bsg.c index 5b2bc1a6f922..39bf204c6ec3 100644 --- a/drivers/scsi/ufs/ufs_bsg.c +++ b/drivers/scsi/ufs/ufs_bsg.c @@ -97,7 +97,7 @@ static int ufs_bsg_request(struct bsg_job *job) bsg_reply->reply_payload_rcv_len = 0; - pm_runtime_get_sync(hba->dev); + ufshcd_rpm_get_sync(hba); msgcode = bsg_request->msgcode; switch (msgcode) { @@ -106,7 +106,7 @@ static int ufs_bsg_request(struct bsg_job *job) ret = ufs_bsg_alloc_desc_buffer(hba, job, &desc_buff, &desc_len, desc_op); if (ret) { - pm_runtime_put_sync(hba->dev); + ufshcd_rpm_put_sync(hba); goto out; } @@ -138,7 +138,7 @@ static int ufs_bsg_request(struct bsg_job *job) break; } - pm_runtime_put_sync(hba->dev); + ufshcd_rpm_put_sync(hba); if (!desc_buff) goto out; diff --git a/drivers/scsi/ufs/ufshcd-pci.c b/drivers/scsi/ufs/ufshcd-pci.c index 23ee828747e2..e6c334bfb4c2 100644 --- a/drivers/scsi/ufs/ufshcd-pci.c +++ b/drivers/scsi/ufs/ufshcd-pci.c @@ -410,29 +410,6 @@ static int ufshcd_pci_resume(struct device *dev) return ufshcd_system_resume(dev_get_drvdata(dev)); } -/** - * ufshcd_pci_poweroff - suspend-to-disk poweroff function - * @dev: pointer to PCI device handle - * - * Returns 0 if successful - * Returns non-zero otherwise - */ -static int ufshcd_pci_poweroff(struct device *dev) -{ - struct ufs_hba *hba = dev_get_drvdata(dev); - int spm_lvl = hba->spm_lvl; - int ret; - - /* - * For poweroff we need to set the UFS device to PowerDown mode. - * Force spm_lvl to ensure that. - */ - hba->spm_lvl = 5; - ret = ufshcd_system_suspend(hba); - hba->spm_lvl = spm_lvl; - return ret; -} - #endif /* !CONFIG_PM_SLEEP */ #ifdef CONFIG_PM @@ -533,17 +510,14 @@ ufshcd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) } static const struct dev_pm_ops ufshcd_pci_pm_ops = { -#ifdef CONFIG_PM_SLEEP - .suspend = ufshcd_pci_suspend, - .resume = ufshcd_pci_resume, - .freeze = ufshcd_pci_suspend, - .thaw = ufshcd_pci_resume, - .poweroff = ufshcd_pci_poweroff, - .restore = ufshcd_pci_resume, -#endif SET_RUNTIME_PM_OPS(ufshcd_pci_runtime_suspend, ufshcd_pci_runtime_resume, ufshcd_pci_runtime_idle) + SET_SYSTEM_SLEEP_PM_OPS(ufshcd_pci_suspend, ufshcd_pci_resume) +#ifdef CONFIG_PM_SLEEP + .prepare = ufshcd_suspend_prepare, + .complete = ufshcd_resume_complete, +#endif }; static const struct pci_device_id ufshcd_pci_tbl[] = { diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 3eb54937f1d8..ab707a2c3796 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -16,6 +16,7 @@ #include #include #include +#include #include "ufshcd.h" #include "ufs_quirks.h" #include "unipro.h" @@ -77,6 +78,8 @@ /* Polling time to wait for fDeviceInit */ #define FDEVICEINIT_COMPL_TIMEOUT 1500 /* millisecs */ +#define wlun_dev_to_hba(dv) shost_priv(to_scsi_device(dv)->host) + #define ufshcd_toggle_vreg(_dev, _vreg, _on) \ ({ \ int _ret; \ @@ -1551,7 +1554,7 @@ static ssize_t ufshcd_clkscale_enable_store(struct device *dev, if (value == hba->clk_scaling.is_enabled) goto out; - pm_runtime_get_sync(hba->dev); + ufshcd_rpm_get_sync(hba); ufshcd_hold(hba, false); hba->clk_scaling.is_enabled = value; @@ -1567,7 +1570,7 @@ static ssize_t ufshcd_clkscale_enable_store(struct device *dev, } ufshcd_release(hba); - pm_runtime_put_sync(hba->dev); + ufshcd_rpm_put_sync(hba); out: up(&hba->host_sem); return err ? err : count; @@ -2565,6 +2568,17 @@ static inline u16 ufshcd_upiu_wlun_to_scsi_wlun(u8 upiu_wlun_id) return (upiu_wlun_id & ~UFS_UPIU_WLUN_ID) | SCSI_W_LUN_BASE; } +static inline bool is_rpmb_wlun(struct scsi_device *sdev) +{ + return sdev->lun == ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_RPMB_WLUN); +} + +static inline bool is_device_wlun(struct scsi_device *sdev) +{ + return sdev->lun == + ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_UFS_DEVICE_WLUN); +} + static void ufshcd_init_lrb(struct ufs_hba *hba, struct ufshcd_lrb *lrb, int i) { struct utp_transfer_cmd_desc *cmd_descp = hba->ucdl_base_addr; @@ -4098,12 +4112,13 @@ void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit) } spin_unlock_irqrestore(hba->host->host_lock, flags); - if (update && !pm_runtime_suspended(hba->dev)) { - pm_runtime_get_sync(hba->dev); + if (update && + !pm_runtime_suspended(&hba->sdev_ufs_device->sdev_gendev)) { + ufshcd_rpm_get_sync(hba); ufshcd_hold(hba, false); ufshcd_auto_hibern8_enable(hba); ufshcd_release(hba); - pm_runtime_put(hba->dev); + ufshcd_rpm_put_sync(hba); } } EXPORT_SYMBOL_GPL(ufshcd_auto_hibern8_update); @@ -4800,6 +4815,43 @@ static inline void ufshcd_get_lu_power_on_wp_status(struct ufs_hba *hba, } } +/** + * ufshcd_setup_links - associate link b/w device wlun and other luns + * @sdev: pointer to SCSI device + * @hba: pointer to ufs hba + */ +static void ufshcd_setup_links(struct ufs_hba *hba, struct scsi_device *sdev) +{ + struct device_link *link; + + /* + * Device wlun is the supplier & rest of the luns are consumers. + * This ensures that device wlun suspends after all other luns. + */ + if (hba->sdev_ufs_device) { + link = device_link_add(&sdev->sdev_gendev, + &hba->sdev_ufs_device->sdev_gendev, + DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE); + if (!link) { + dev_err(&sdev->sdev_gendev, "Failed establishing link - %s\n", + dev_name(&hba->sdev_ufs_device->sdev_gendev)); + return; + } + hba->luns_avail--; + /* Ignore REPORT_LUN wlun probing */ + if (hba->luns_avail == 1) { + ufshcd_rpm_put(hba); + return; + } + } else { + /* + * Device wlun is probed. The assumption is that WLUNs are + * scanned before other LUNs. + */ + hba->luns_avail--; + } +} + /** * ufshcd_slave_alloc - handle initial SCSI device configurations * @sdev: pointer to SCSI device @@ -4831,6 +4883,8 @@ static int ufshcd_slave_alloc(struct scsi_device *sdev) ufshcd_get_lu_power_on_wp_status(hba, sdev); + ufshcd_setup_links(hba, sdev); + return 0; } @@ -4862,8 +4916,13 @@ static int ufshcd_slave_configure(struct scsi_device *sdev) blk_queue_update_dma_pad(q, PRDT_DATA_BYTE_COUNT_PAD - 1); if (hba->quirks & UFSHCD_QUIRK_ALIGN_SG_WITH_PAGE_SIZE) blk_queue_update_dma_alignment(q, PAGE_SIZE - 1); - - if (ufshcd_is_rpm_autosuspend_allowed(hba)) + /* + * Block runtime-pm until all consumers are added. + * Refer ufshcd_setup_links(). + */ + if (is_device_wlun(sdev)) + pm_runtime_get_noresume(&sdev->sdev_gendev); + else if (ufshcd_is_rpm_autosuspend_allowed(hba)) sdev->rpm_autosuspend = 1; ufshcd_crypto_setup_rq_keyslot_manager(hba, q); @@ -4979,15 +5038,9 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) */ if (!hba->pm_op_in_progress && !ufshcd_eh_in_progress(hba) && - ufshcd_is_exception_event(lrbp->ucd_rsp_ptr) && - schedule_work(&hba->eeh_work)) { - /* - * Prevent suspend once eeh_work is scheduled - * to avoid deadlock between ufshcd_suspend - * and exception event handler. - */ - pm_runtime_get_noresume(hba->dev); - } + ufshcd_is_exception_event(lrbp->ucd_rsp_ptr)) + /* Flushed in suspend */ + schedule_work(&hba->eeh_work); break; case UPIU_TRANSACTION_REJECT_UPIU: /* TODO: handle Reject UPIU Response */ @@ -5586,8 +5639,8 @@ static void ufshcd_rpm_dev_flush_recheck_work(struct work_struct *work) * after a certain delay to recheck the threshold by next runtime * suspend. */ - pm_runtime_get_sync(hba->dev); - pm_runtime_put_sync(hba->dev); + ufshcd_rpm_get_sync(hba); + ufshcd_rpm_put_sync(hba); } /** @@ -5604,7 +5657,6 @@ static void ufshcd_exception_event_handler(struct work_struct *work) u32 status = 0; hba = container_of(work, struct ufs_hba, eeh_work); - pm_runtime_get_sync(hba->dev); ufshcd_scsi_block_requests(hba); err = ufshcd_get_ee_status(hba, &status); if (err) { @@ -5621,14 +5673,6 @@ static void ufshcd_exception_event_handler(struct work_struct *work) ufs_debugfs_exception_event(hba, status); out: ufshcd_scsi_unblock_requests(hba); - /* - * pm_runtime_get_noresume is called while scheduling - * eeh_work to avoid suspend racing with exception work. - * Hence decrement usage counter using pm_runtime_put_noidle - * to allow suspend on completion of exception event handler. - */ - pm_runtime_put_noidle(hba->dev); - pm_runtime_put(hba->dev); return; } @@ -5753,12 +5797,13 @@ static void ufshcd_clk_scaling_suspend(struct ufs_hba *hba, bool suspend) static void ufshcd_err_handling_prepare(struct ufs_hba *hba) { - pm_runtime_get_sync(hba->dev); - if (pm_runtime_status_suspended(hba->dev) || hba->is_sys_suspended) { + ufshcd_rpm_get_sync(hba); + if (pm_runtime_status_suspended(&hba->sdev_ufs_device->sdev_gendev) || + hba->is_sys_suspended) { enum ufs_pm_op pm_op; /* - * Don't assume anything of pm_runtime_get_sync(), if + * Don't assume anything of resume, if * resume fails, irq and clocks can be OFF, and powers * can be OFF or in LPM. */ @@ -5794,12 +5839,13 @@ static void ufshcd_err_handling_unprepare(struct ufs_hba *hba) if (ufshcd_is_clkscaling_supported(hba)) ufshcd_clk_scaling_suspend(hba, false); ufshcd_clear_ua_wluns(hba); - pm_runtime_put(hba->dev); + ufshcd_rpm_put(hba); } static inline bool ufshcd_err_handling_should_stop(struct ufs_hba *hba) { return (!hba->is_powered || hba->shutting_down || + !hba->sdev_ufs_device || hba->ufshcd_state == UFSHCD_STATE_ERROR || (!(hba->saved_err || hba->saved_uic_err || hba->force_reset || ufshcd_is_link_broken(hba)))); @@ -5815,14 +5861,18 @@ static void ufshcd_recover_pm_error(struct ufs_hba *hba) hba->is_sys_suspended = false; /* - * Set RPM status of hba device to RPM_ACTIVE, + * Set RPM status of wlun device to RPM_ACTIVE, * this also clears its runtime error. */ - ret = pm_runtime_set_active(hba->dev); + ret = pm_runtime_set_active(&hba->sdev_ufs_device->sdev_gendev); + + /* hba device might have a runtime error otherwise */ + if (ret) + ret = pm_runtime_set_active(hba->dev); /* - * If hba device had runtime error, we also need to resume those - * scsi devices under hba in case any of them has failed to be - * resumed due to hba runtime resume failure. This is to unblock + * If wlun device had runtime error, we also need to resume those + * consumer scsi devices in case any of them has failed to be + * resumed due to supplier runtime resume failure. This is to unblock * blk_queue_enter in case there are bios waiting inside it. */ if (!ret) { @@ -7246,7 +7296,6 @@ static int ufshcd_scsi_add_wlus(struct ufs_hba *hba) hba->sdev_ufs_device = NULL; goto out; } - ufshcd_blk_pm_runtime_init(hba->sdev_ufs_device); scsi_device_put(hba->sdev_ufs_device); hba->sdev_rpmb = __scsi_add_device(hba->host, 0, 0, @@ -7410,6 +7459,9 @@ static int ufs_get_device_desc(struct ufs_hba *hba) goto out; } + hba->luns_avail = desc_buf[DEVICE_DESC_PARAM_NUM_LU] + + desc_buf[DEVICE_DESC_PARAM_NUM_WLU]; + ufs_fixup_device_setup(hba); ufshcd_wb_probe(hba, desc_buf); @@ -7887,6 +7939,7 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool async) ufshcd_set_ufs_dev_active(hba); ufshcd_force_reset_auto_bkops(hba); hba->wlun_dev_clr_ua = true; + hba->wlun_rpmb_clr_ua = true; /* Gear up to HS gear if supported */ if (hba->max_pwr_info.is_valid) { @@ -8472,7 +8525,8 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba, * handling context. */ hba->host->eh_noresume = 1; - ufshcd_clear_ua_wluns(hba); + if (hba->wlun_dev_clr_ua) + ufshcd_clear_ua_wlun(hba, UFS_UPIU_UFS_DEVICE_WLUN); cmd[4] = pwr_mode << 4; @@ -8647,23 +8701,7 @@ static void ufshcd_hba_vreg_set_hpm(struct ufs_hba *hba) ufshcd_setup_hba_vreg(hba, true); } -/** - * ufshcd_suspend - helper function for suspend operations - * @hba: per adapter instance - * @pm_op: desired low power operation type - * - * This function will try to put the UFS device and link into low power - * mode based on the "rpm_lvl" (Runtime PM level) or "spm_lvl" - * (System PM level). - * - * If this function is called during shutdown, it will make sure that - * both UFS device and UFS link is powered off. - * - * NOTE: UFS device & link must be active before we enter in this function. - * - * Returns 0 for success and non-zero for failure - */ -static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) +static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) { int ret = 0; int check_for_bkops; @@ -8671,7 +8709,7 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) enum ufs_dev_pwr_mode req_dev_pwr_mode; enum uic_link_state req_link_state; - hba->pm_op_in_progress = 1; + hba->pm_op_in_progress = true; if (!ufshcd_is_shutdown_pm(pm_op)) { pm_lvl = ufshcd_is_runtime_pm(pm_op) ? hba->rpm_lvl : hba->spm_lvl; @@ -8694,17 +8732,17 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) if (req_dev_pwr_mode == UFS_ACTIVE_PWR_MODE && req_link_state == UIC_LINK_ACTIVE_STATE) { - goto disable_clks; + goto vops_suspend; } if ((req_dev_pwr_mode == hba->curr_dev_pwr_mode) && (req_link_state == hba->uic_link_state)) - goto enable_gating; + goto enable_scaling; /* UFS device & link must be active before we enter in this function */ if (!ufshcd_is_ufs_dev_active(hba) || !ufshcd_is_link_active(hba)) { ret = -EINVAL; - goto enable_gating; + goto enable_scaling; } if (ufshcd_is_runtime_pm(pm_op)) { @@ -8716,7 +8754,7 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) */ ret = ufshcd_urgent_bkops(hba); if (ret) - goto enable_gating; + goto enable_scaling; } else { /* make sure that auto bkops is disabled */ ufshcd_disable_auto_bkops(hba); @@ -8744,7 +8782,7 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) if (!hba->dev_info.b_rpm_dev_flush_capable) { ret = ufshcd_set_dev_pwr_mode(hba, req_dev_pwr_mode); if (ret) - goto enable_gating; + goto enable_scaling; } } @@ -8757,7 +8795,7 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) if (ret) goto set_dev_active; -disable_clks: +vops_suspend: /* * Call vendor specific suspend callback. As these callbacks may access * vendor specific host controller register space call them before the @@ -8766,28 +8804,9 @@ disable_clks: ret = ufshcd_vops_suspend(hba, pm_op); if (ret) goto set_link_active; - /* - * Disable the host irq as host controller as there won't be any - * host controller transaction expected till resume. - */ - ufshcd_disable_irq(hba); - - ufshcd_setup_clocks(hba, false); - - if (ufshcd_is_clkgating_allowed(hba)) { - hba->clk_gating.state = CLKS_OFF; - trace_ufshcd_clk_gating(dev_name(hba->dev), - hba->clk_gating.state); - } - - ufshcd_vreg_set_lpm(hba); - - /* Put the host controller in low power mode if possible */ - ufshcd_hba_vreg_set_lpm(hba); goto out; set_link_active: - ufshcd_vreg_set_hpm(hba); /* * Device hardware reset is required to exit DeepSleep. Also, for * DeepSleep, the link is off so host reset and restore will be done @@ -8809,57 +8828,32 @@ set_dev_active: } if (!ufshcd_set_dev_pwr_mode(hba, UFS_ACTIVE_PWR_MODE)) ufshcd_disable_auto_bkops(hba); -enable_gating: +enable_scaling: if (ufshcd_is_clkscaling_supported(hba)) ufshcd_clk_scaling_suspend(hba, false); - hba->clk_gating.is_suspended = false; hba->dev_info.b_rpm_dev_flush_capable = false; - ufshcd_clear_ua_wluns(hba); - ufshcd_release(hba); out: if (hba->dev_info.b_rpm_dev_flush_capable) { schedule_delayed_work(&hba->rpm_dev_flush_recheck_work, msecs_to_jiffies(RPM_DEV_FLUSH_RECHECK_WORK_DELAY_MS)); } - hba->pm_op_in_progress = 0; - - if (ret) - ufshcd_update_evt_hist(hba, UFS_EVT_SUSPEND_ERR, (u32)ret); + if (ret) { + ufshcd_update_evt_hist(hba, UFS_EVT_WL_SUSP_ERR, (u32)ret); + hba->clk_gating.is_suspended = false; + ufshcd_release(hba); + } + hba->pm_op_in_progress = false; return ret; } -/** - * ufshcd_resume - helper function for resume operations - * @hba: per adapter instance - * @pm_op: runtime PM or system PM - * - * This function basically brings the UFS device, UniPro link and controller - * to active state. - * - * Returns 0 for success and non-zero for failure - */ -static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) +static int __ufshcd_wl_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) { int ret; - enum uic_link_state old_link_state; - - hba->pm_op_in_progress = 1; - old_link_state = hba->uic_link_state; + enum uic_link_state old_link_state = hba->uic_link_state; - ufshcd_hba_vreg_set_hpm(hba); - ret = ufshcd_vreg_set_hpm(hba); - if (ret) - goto out; - - /* Make sure clocks are enabled before accessing controller */ - ret = ufshcd_setup_clocks(hba, true); - if (ret) - goto disable_vreg; - - /* enable the host irq as host controller would be active soon */ - ufshcd_enable_irq(hba); + hba->pm_op_in_progress = true; /* * Call vendor specific resume callback. As these callbacks may access @@ -8868,7 +8862,7 @@ static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) */ ret = ufshcd_vops_resume(hba, pm_op); if (ret) - goto disable_irq_and_vops_clks; + goto out; /* For DeepSleep, the only supported option is to have the link off */ WARN_ON(ufshcd_is_ufs_dev_deepsleep(hba) && !ufshcd_is_link_off(hba)); @@ -8916,42 +8910,219 @@ static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) if (hba->ee_usr_mask) ufshcd_write_ee_control(hba); - hba->clk_gating.is_suspended = false; - if (ufshcd_is_clkscaling_supported(hba)) ufshcd_clk_scaling_suspend(hba, false); - /* Enable Auto-Hibernate if configured */ - ufshcd_auto_hibern8_enable(hba); - if (hba->dev_info.b_rpm_dev_flush_capable) { hba->dev_info.b_rpm_dev_flush_capable = false; cancel_delayed_work(&hba->rpm_dev_flush_recheck_work); } - ufshcd_clear_ua_wluns(hba); - - /* Schedule clock gating in case of no access to UFS device yet */ - ufshcd_release(hba); - + /* Enable Auto-Hibernate if configured */ + ufshcd_auto_hibern8_enable(hba); goto out; set_old_link_state: ufshcd_link_state_transition(hba, old_link_state, 0); vendor_suspend: ufshcd_vops_suspend(hba, pm_op); -disable_irq_and_vops_clks: +out: + if (ret) + ufshcd_update_evt_hist(hba, UFS_EVT_WL_RES_ERR, (u32)ret); + hba->clk_gating.is_suspended = false; + ufshcd_release(hba); + hba->pm_op_in_progress = false; + return ret; +} + +static int ufshcd_wl_runtime_suspend(struct device *dev) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct ufs_hba *hba; + int ret; + ktime_t start = ktime_get(); + + hba = shost_priv(sdev->host); + + ret = __ufshcd_wl_suspend(hba, UFS_RUNTIME_PM); + if (ret) + dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret); + + trace_ufshcd_wl_runtime_suspend(dev_name(dev), ret, + ktime_to_us(ktime_sub(ktime_get(), start)), + hba->curr_dev_pwr_mode, hba->uic_link_state); + + return ret; +} + +static int ufshcd_wl_runtime_resume(struct device *dev) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct ufs_hba *hba; + int ret = 0; + ktime_t start = ktime_get(); + + hba = shost_priv(sdev->host); + + ret = __ufshcd_wl_resume(hba, UFS_RUNTIME_PM); + if (ret) + dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret); + + trace_ufshcd_wl_runtime_resume(dev_name(dev), ret, + ktime_to_us(ktime_sub(ktime_get(), start)), + hba->curr_dev_pwr_mode, hba->uic_link_state); + + return ret; +} + +#ifdef CONFIG_PM_SLEEP +static int ufshcd_wl_suspend(struct device *dev) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct ufs_hba *hba; + int ret = 0; + ktime_t start = ktime_get(); + + hba = shost_priv(sdev->host); + down(&hba->host_sem); + + if (pm_runtime_suspended(dev)) + goto out; + + ret = __ufshcd_wl_suspend(hba, UFS_SYSTEM_PM); + if (ret) { + dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret); + up(&hba->host_sem); + } + +out: + if (!ret) + hba->is_sys_suspended = true; + trace_ufshcd_wl_suspend(dev_name(dev), ret, + ktime_to_us(ktime_sub(ktime_get(), start)), + hba->curr_dev_pwr_mode, hba->uic_link_state); + + return ret; +} + +static int ufshcd_wl_resume(struct device *dev) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct ufs_hba *hba; + int ret = 0; + ktime_t start = ktime_get(); + + hba = shost_priv(sdev->host); + + if (pm_runtime_suspended(dev)) + goto out; + + ret = __ufshcd_wl_resume(hba, UFS_SYSTEM_PM); + if (ret) + dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret); +out: + trace_ufshcd_wl_resume(dev_name(dev), ret, + ktime_to_us(ktime_sub(ktime_get(), start)), + hba->curr_dev_pwr_mode, hba->uic_link_state); + if (!ret) + hba->is_sys_suspended = false; + up(&hba->host_sem); + return ret; +} +#endif + +static void ufshcd_wl_shutdown(struct device *dev) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct ufs_hba *hba; + + hba = shost_priv(sdev->host); + + down(&hba->host_sem); + hba->shutting_down = true; + up(&hba->host_sem); + + /* Turn on everything while shutting down */ + ufshcd_rpm_get_sync(hba); + scsi_device_quiesce(sdev); + shost_for_each_device(sdev, hba->host) { + if (sdev == hba->sdev_ufs_device) + continue; + scsi_device_quiesce(sdev); + } + __ufshcd_wl_suspend(hba, UFS_SHUTDOWN_PM); +} + +/** + * ufshcd_suspend - helper function for suspend operations + * @hba: per adapter instance + * + * This function will put disable irqs, turn off clocks + * and set vreg and hba-vreg in lpm mode. + * Also check the description of __ufshcd_wl_suspend(). + */ +static int ufshcd_suspend(struct ufs_hba *hba) +{ + int ret; + + if (!hba->is_powered) + return 0; + /* + * Disable the host irq as host controller as there won't be any + * host controller transaction expected till resume. + */ ufshcd_disable_irq(hba); - ufshcd_setup_clocks(hba, false); + ret = ufshcd_setup_clocks(hba, false); + if (ret) { + ufshcd_enable_irq(hba); + return ret; + } if (ufshcd_is_clkgating_allowed(hba)) { hba->clk_gating.state = CLKS_OFF; trace_ufshcd_clk_gating(dev_name(hba->dev), hba->clk_gating.state); } + + ufshcd_vreg_set_lpm(hba); + /* Put the host controller in low power mode if possible */ + ufshcd_hba_vreg_set_lpm(hba); + return ret; +} + +/** + * ufshcd_resume - helper function for resume operations + * @hba: per adapter instance + * + * This function basically turns on the regulators, clocks and + * irqs of the hba. + * Also check the description of __ufshcd_wl_resume(). + * + * Returns 0 for success and non-zero for failure + */ +static int ufshcd_resume(struct ufs_hba *hba) +{ + int ret; + + if (!hba->is_powered) + return 0; + + ufshcd_hba_vreg_set_hpm(hba); + ret = ufshcd_vreg_set_hpm(hba); + if (ret) + goto out; + + /* Make sure clocks are enabled before accessing controller */ + ret = ufshcd_setup_clocks(hba, true); + if (ret) + goto disable_vreg; + + /* enable the host irq as host controller would be active soon */ + ufshcd_enable_irq(hba); + goto out; + disable_vreg: ufshcd_vreg_set_lpm(hba); out: - hba->pm_op_in_progress = 0; if (ret) ufshcd_update_evt_hist(hba, UFS_EVT_RESUME_ERR, (u32)ret); return ret; @@ -8962,6 +9133,7 @@ out: * @hba: per adapter instance * * Check the description of ufshcd_suspend() function for more details. + * Also check the description of __ufshcd_wl_suspend(). * * Returns 0 for success and non-zero for failure */ @@ -8970,44 +9142,14 @@ int ufshcd_system_suspend(struct ufs_hba *hba) int ret = 0; ktime_t start = ktime_get(); - down(&hba->host_sem); - - if (!hba->is_powered) - return 0; - - cancel_delayed_work_sync(&hba->rpm_dev_flush_recheck_work); - - if ((ufs_get_pm_lvl_to_dev_pwr_mode(hba->spm_lvl) == - hba->curr_dev_pwr_mode) && - (ufs_get_pm_lvl_to_link_pwr_state(hba->spm_lvl) == - hba->uic_link_state) && - pm_runtime_suspended(hba->dev) && - !hba->dev_info.b_rpm_dev_flush_capable) + if (pm_runtime_suspended(hba->dev)) goto out; - if (pm_runtime_suspended(hba->dev)) { - /* - * UFS device and/or UFS link low power states during runtime - * suspend seems to be different than what is expected during - * system suspend. Hence runtime resume the devic & link and - * let the system suspend low power states to take effect. - * TODO: If resume takes longer time, we might have optimize - * it in future by not resuming everything if possible. - */ - ret = ufshcd_runtime_resume(hba); - if (ret) - goto out; - } - - ret = ufshcd_suspend(hba, UFS_SYSTEM_PM); + ret = ufshcd_suspend(hba); out: trace_ufshcd_system_suspend(dev_name(hba->dev), ret, ktime_to_us(ktime_sub(ktime_get(), start)), hba->curr_dev_pwr_mode, hba->uic_link_state); - if (!ret) - hba->is_sys_suspended = true; - else - up(&hba->host_sem); return ret; } EXPORT_SYMBOL(ufshcd_system_suspend); @@ -9024,21 +9166,16 @@ int ufshcd_system_resume(struct ufs_hba *hba) int ret = 0; ktime_t start = ktime_get(); - if (!hba->is_powered || pm_runtime_suspended(hba->dev)) - /* - * Let the runtime resume take care of resuming - * if runtime suspended. - */ + if (pm_runtime_suspended(hba->dev)) goto out; - else - ret = ufshcd_resume(hba, UFS_SYSTEM_PM); + + ret = ufshcd_resume(hba); + out: trace_ufshcd_system_resume(dev_name(hba->dev), ret, ktime_to_us(ktime_sub(ktime_get(), start)), hba->curr_dev_pwr_mode, hba->uic_link_state); - if (!ret) - hba->is_sys_suspended = false; - up(&hba->host_sem); + return ret; } EXPORT_SYMBOL(ufshcd_system_resume); @@ -9048,19 +9185,17 @@ EXPORT_SYMBOL(ufshcd_system_resume); * @hba: per adapter instance * * Check the description of ufshcd_suspend() function for more details. + * Also check the description of __ufshcd_wl_suspend(). * * Returns 0 for success and non-zero for failure */ int ufshcd_runtime_suspend(struct ufs_hba *hba) { - int ret = 0; + int ret; ktime_t start = ktime_get(); - if (!hba->is_powered) - goto out; - else - ret = ufshcd_suspend(hba, UFS_RUNTIME_PM); -out: + ret = ufshcd_suspend(hba); + trace_ufshcd_runtime_suspend(dev_name(hba->dev), ret, ktime_to_us(ktime_sub(ktime_get(), start)), hba->curr_dev_pwr_mode, hba->uic_link_state); @@ -9072,33 +9207,19 @@ EXPORT_SYMBOL(ufshcd_runtime_suspend); * ufshcd_runtime_resume - runtime resume routine * @hba: per adapter instance * - * This function basically brings the UFS device, UniPro link and controller + * This function basically brings controller * to active state. Following operations are done in this function: * * 1. Turn on all the controller related clocks - * 2. Bring the UniPro link out of Hibernate state - * 3. If UFS device is in sleep state, turn ON VCC rail and bring the UFS device - * to active state. - * 4. If auto-bkops is enabled on the device, disable it. - * - * So following would be the possible power state after this function return - * successfully: - * S1: UFS device in Active state with VCC rail ON - * UniPro link in Active state - * All the UFS/UniPro controller clocks are ON - * - * Returns 0 for success and non-zero for failure + * 2. Turn ON VCC rail */ int ufshcd_runtime_resume(struct ufs_hba *hba) { - int ret = 0; + int ret; ktime_t start = ktime_get(); - if (!hba->is_powered) - goto out; - else - ret = ufshcd_resume(hba, UFS_RUNTIME_PM); -out: + ret = ufshcd_resume(hba); + trace_ufshcd_runtime_resume(dev_name(hba->dev), ret, ktime_to_us(ktime_sub(ktime_get(), start)), hba->curr_dev_pwr_mode, hba->uic_link_state); @@ -9116,30 +9237,20 @@ EXPORT_SYMBOL(ufshcd_runtime_idle); * ufshcd_shutdown - shutdown routine * @hba: per adapter instance * - * This function would power off both UFS device and UFS link. + * This function would turn off both UFS device and UFS hba + * regulators. It would also disable clocks. * * Returns 0 always to allow force shutdown even in case of errors. */ int ufshcd_shutdown(struct ufs_hba *hba) { - int ret = 0; - - down(&hba->host_sem); - hba->shutting_down = true; - up(&hba->host_sem); - - if (!hba->is_powered) - goto out; - if (ufshcd_is_ufs_dev_poweroff(hba) && ufshcd_is_link_off(hba)) goto out; pm_runtime_get_sync(hba->dev); - ret = ufshcd_suspend(hba, UFS_SHUTDOWN_PM); + ufshcd_suspend(hba); out: - if (ret) - dev_err(hba->dev, "%s failed, err %d\n", __func__, ret); hba->is_powered = false; /* allow force shutdown even in case of errors */ return 0; @@ -9153,6 +9264,8 @@ EXPORT_SYMBOL(ufshcd_shutdown); */ void ufshcd_remove(struct ufs_hba *hba) { + if (hba->sdev_ufs_device) + ufshcd_rpm_get_sync(hba); ufs_bsg_remove(hba); ufs_sysfs_remove_nodes(hba->dev); blk_cleanup_queue(hba->tmf_queue); @@ -9456,15 +9569,183 @@ out_error: } EXPORT_SYMBOL_GPL(ufshcd_init); +void ufshcd_resume_complete(struct device *dev) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + + if (hba->complete_put) { + ufshcd_rpm_put(hba); + hba->complete_put = false; + } + if (hba->rpmb_complete_put) { + ufshcd_rpmb_rpm_put(hba); + hba->rpmb_complete_put = false; + } +} +EXPORT_SYMBOL_GPL(ufshcd_resume_complete); + +int ufshcd_suspend_prepare(struct device *dev) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + int ret; + + /* + * SCSI assumes that runtime-pm and system-pm for scsi drivers + * are same. And it doesn't wake up the device for system-suspend + * if it's runtime suspended. But ufs doesn't follow that. + * Refer ufshcd_resume_complete() + */ + if (hba->sdev_ufs_device) { + ret = ufshcd_rpm_get_sync(hba); + if (ret < 0 && ret != -EACCES) { + ufshcd_rpm_put(hba); + return ret; + } + hba->complete_put = true; + } + if (hba->sdev_rpmb) { + ufshcd_rpmb_rpm_get_sync(hba); + hba->rpmb_complete_put = true; + } + return 0; +} +EXPORT_SYMBOL_GPL(ufshcd_suspend_prepare); + +#ifdef CONFIG_PM_SLEEP +static int ufshcd_wl_poweroff(struct device *dev) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct ufs_hba *hba = shost_priv(sdev->host); + + __ufshcd_wl_suspend(hba, UFS_SHUTDOWN_PM); + return 0; +} +#endif + +static int ufshcd_wl_probe(struct device *dev) +{ + struct scsi_device *sdev = to_scsi_device(dev); + + if (!is_device_wlun(sdev)) + return -ENODEV; + + blk_pm_runtime_init(sdev->request_queue, dev); + pm_runtime_set_autosuspend_delay(dev, 0); + pm_runtime_allow(dev); + + return 0; +} + +static int ufshcd_wl_remove(struct device *dev) +{ + pm_runtime_forbid(dev); + return 0; +} + +static const struct dev_pm_ops ufshcd_wl_pm_ops = { +#ifdef CONFIG_PM_SLEEP + .suspend = ufshcd_wl_suspend, + .resume = ufshcd_wl_resume, + .freeze = ufshcd_wl_suspend, + .thaw = ufshcd_wl_resume, + .poweroff = ufshcd_wl_poweroff, + .restore = ufshcd_wl_resume, +#endif + SET_RUNTIME_PM_OPS(ufshcd_wl_runtime_suspend, ufshcd_wl_runtime_resume, NULL) +}; + +/* + * ufs_dev_wlun_template - describes ufs device wlun + * ufs-device wlun - used to send pm commands + * All luns are consumers of ufs-device wlun. + * + * Currently, no sd driver is present for wluns. + * Hence the no specific pm operations are performed. + * With ufs design, SSU should be sent to ufs-device wlun. + * Hence register a scsi driver for ufs wluns only. + */ +static struct scsi_driver ufs_dev_wlun_template = { + .gendrv = { + .name = "ufs_device_wlun", + .owner = THIS_MODULE, + .probe = ufshcd_wl_probe, + .remove = ufshcd_wl_remove, + .pm = &ufshcd_wl_pm_ops, + .shutdown = ufshcd_wl_shutdown, + }, +}; + +static int ufshcd_rpmb_probe(struct device *dev) +{ + return is_rpmb_wlun(to_scsi_device(dev)) ? 0 : -ENODEV; +} + +static inline int ufshcd_clear_rpmb_uac(struct ufs_hba *hba) +{ + int ret = 0; + + if (!hba->wlun_rpmb_clr_ua) + return 0; + ret = ufshcd_clear_ua_wlun(hba, UFS_UPIU_RPMB_WLUN); + if (!ret) + hba->wlun_rpmb_clr_ua = 0; + return ret; +} + +static int ufshcd_rpmb_resume(struct device *dev) +{ + struct ufs_hba *hba = wlun_dev_to_hba(dev); + + if (hba->sdev_rpmb) + ufshcd_clear_rpmb_uac(hba); + return 0; +} + +static const struct dev_pm_ops ufs_rpmb_pm_ops = { + SET_RUNTIME_PM_OPS(NULL, ufshcd_rpmb_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(NULL, ufshcd_rpmb_resume) +}; + +/** + * Describes the ufs rpmb wlun. + * Used only to send uac. + */ +static struct scsi_driver ufs_rpmb_wlun_template = { + .gendrv = { + .name = "ufs_rpmb_wlun", + .owner = THIS_MODULE, + .probe = ufshcd_rpmb_probe, + .pm = &ufs_rpmb_pm_ops, + }, +}; + static int __init ufshcd_core_init(void) { + int ret; + ufs_debugfs_init(); - return 0; + + ret = scsi_register_driver(&ufs_dev_wlun_template.gendrv); + if (ret) + goto debugfs_exit; + + ret = scsi_register_driver(&ufs_rpmb_wlun_template.gendrv); + if (ret) + goto unregister; + + return ret; +unregister: + scsi_unregister_driver(&ufs_dev_wlun_template.gendrv); +debugfs_exit: + ufs_debugfs_exit(); + return ret; } static void __exit ufshcd_core_exit(void) { ufs_debugfs_exit(); + scsi_unregister_driver(&ufs_rpmb_wlun_template.gendrv); + scsi_unregister_driver(&ufs_dev_wlun_template.gendrv); } module_init(ufshcd_core_init); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 5eb66a8debc7..b8b4fe2b6bd5 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -72,6 +72,8 @@ enum ufs_event_type { UFS_EVT_LINK_STARTUP_FAIL, UFS_EVT_RESUME_ERR, UFS_EVT_SUSPEND_ERR, + UFS_EVT_WL_SUSP_ERR, + UFS_EVT_WL_RES_ERR, /* abnormal events */ UFS_EVT_DEV_RESET, @@ -807,6 +809,7 @@ struct ufs_hba { struct list_head clk_list_head; bool wlun_dev_clr_ua; + bool wlun_rpmb_clr_ua; /* Number of requests aborts */ int req_abort_count; @@ -846,6 +849,9 @@ struct ufs_hba { struct delayed_work debugfs_ee_work; u32 debugfs_ee_rate_limit_ms; #endif + u32 luns_avail; + bool complete_put; + bool rpmb_complete_put; }; /* Returns true if clocks can be gated. Otherwise false */ @@ -1105,6 +1111,8 @@ int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba, enum query_opcode desc_op); int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable); +int ufshcd_suspend_prepare(struct device *dev); +void ufshcd_resume_complete(struct device *dev); /* Wrapper functions for safely calling variant operations */ static inline const char *ufshcd_get_var_name(struct ufs_hba *hba) @@ -1309,4 +1317,29 @@ static inline int ufshcd_update_ee_usr_mask(struct ufs_hba *hba, &hba->ee_drv_mask, set, clr); } +static inline int ufshcd_rpm_get_sync(struct ufs_hba *hba) +{ + return pm_runtime_get_sync(&hba->sdev_ufs_device->sdev_gendev); +} + +static inline int ufshcd_rpm_put_sync(struct ufs_hba *hba) +{ + return pm_runtime_put_sync(&hba->sdev_ufs_device->sdev_gendev); +} + +static inline int ufshcd_rpm_put(struct ufs_hba *hba) +{ + return pm_runtime_put(&hba->sdev_ufs_device->sdev_gendev); +} + +static inline int ufshcd_rpmb_rpm_get_sync(struct ufs_hba *hba) +{ + return pm_runtime_get_sync(&hba->sdev_rpmb->sdev_gendev); +} + +static inline int ufshcd_rpmb_rpm_put(struct ufs_hba *hba) +{ + return pm_runtime_put(&hba->sdev_rpmb->sdev_gendev); +} + #endif /* End of Header */ diff --git a/include/trace/events/ufs.h b/include/trace/events/ufs.h index 1cb6f1afba0e..599739ee7b20 100644 --- a/include/trace/events/ufs.h +++ b/include/trace/events/ufs.h @@ -246,6 +246,26 @@ DEFINE_EVENT(ufshcd_template, ufshcd_init, int dev_state, int link_state), TP_ARGS(dev_name, err, usecs, dev_state, link_state)); +DEFINE_EVENT(ufshcd_template, ufshcd_wl_suspend, + TP_PROTO(const char *dev_name, int err, s64 usecs, + int dev_state, int link_state), + TP_ARGS(dev_name, err, usecs, dev_state, link_state)); + +DEFINE_EVENT(ufshcd_template, ufshcd_wl_resume, + TP_PROTO(const char *dev_name, int err, s64 usecs, + int dev_state, int link_state), + TP_ARGS(dev_name, err, usecs, dev_state, link_state)); + +DEFINE_EVENT(ufshcd_template, ufshcd_wl_runtime_suspend, + TP_PROTO(const char *dev_name, int err, s64 usecs, + int dev_state, int link_state), + TP_ARGS(dev_name, err, usecs, dev_state, link_state)); + +DEFINE_EVENT(ufshcd_template, ufshcd_wl_runtime_resume, + TP_PROTO(const char *dev_name, int err, s64 usecs, + int dev_state, int link_state), + TP_ARGS(dev_name, err, usecs, dev_state, link_state)); + TRACE_EVENT(ufshcd_command, TP_PROTO(const char *dev_name, enum ufs_trace_str_t str_t, unsigned int tag, u32 doorbell, int transfer_len, u32 intr, -- cgit v1.2.3 From 2469f1e0412cb053e37b7499ce5e48b6be4d7653 Mon Sep 17 00:00:00 2001 From: Sergey Samoylenko Date: Tue, 20 Apr 2021 21:59:20 +0300 Subject: scsi: target: core: Add configurable IEEE Company ID attribute Implement an attribute which provides a way to set a company specific WWN in configfs via: target/core/$backstore/$name/wwn/company_id The Open Fabrics Alliance ID 001405h remains the default. Link: https://lore.kernel.org/r/20210420185920.42431-3-s.samoylenko@yadro.com Signed-off-by: Sergey Samoylenko Signed-off-by: Roman Bolshakov Signed-off-by: Martin K. Petersen --- drivers/target/target_core_configfs.c | 50 +++++++++++++++++++++++++++++++++++ drivers/target/target_core_device.c | 5 ++++ drivers/target/target_core_spc.c | 14 +++++----- include/target/target_core_base.h | 1 + 4 files changed, 63 insertions(+), 7 deletions(-) (limited to 'include') diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index 4b2e49341ad6..102ec644bc8a 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -1479,6 +1479,54 @@ static ssize_t target_wwn_revision_store(struct config_item *item, return count; } +static ssize_t +target_wwn_company_id_show(struct config_item *item, + char *page) +{ + return snprintf(page, PAGE_SIZE, "%#08x\n", + to_t10_wwn(item)->company_id); +} + +static ssize_t +target_wwn_company_id_store(struct config_item *item, + const char *page, size_t count) +{ + struct t10_wwn *t10_wwn = to_t10_wwn(item); + struct se_device *dev = t10_wwn->t10_dev; + u32 val; + int ret; + + /* + * The IEEE COMPANY_ID field should contain a 24-bit canonical + * form OUI assigned by the IEEE. + */ + ret = kstrtou32(page, 0, &val); + if (ret < 0) + return ret; + + if (val >= 0x1000000) + return -EOVERFLOW; + + /* + * Check to see if any active exports exist. If they do exist, fail + * here as changing this information on the fly (underneath the + * initiator side OS dependent multipath code) could cause negative + * effects. + */ + if (dev->export_count) { + pr_err("Unable to set Company ID while %u exports exist\n", + dev->export_count); + return -EINVAL; + } + + t10_wwn->company_id = val; + + pr_debug("Target_Core_ConfigFS: Set IEEE Company ID: %#08x\n", + t10_wwn->company_id); + + return count; +} + /* * VPD page 0x80 Unit serial */ @@ -1625,6 +1673,7 @@ DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); CONFIGFS_ATTR(target_wwn_, vendor_id); CONFIGFS_ATTR(target_wwn_, product_id); CONFIGFS_ATTR(target_wwn_, revision); +CONFIGFS_ATTR(target_wwn_, company_id); CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); @@ -1635,6 +1684,7 @@ static struct configfs_attribute *target_core_dev_wwn_attrs[] = { &target_wwn_attr_vendor_id, &target_wwn_attr_product_id, &target_wwn_attr_revision, + &target_wwn_attr_company_id, &target_wwn_attr_vpd_unit_serial, &target_wwn_attr_vpd_protocol_identifier, &target_wwn_attr_vpd_assoc_logical_unit, diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index a8df9f0a82fa..8cb1fa0c0585 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -773,6 +773,11 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) spin_lock_init(&dev->t10_alua.lba_map_lock); dev->t10_wwn.t10_dev = dev; + /* + * Use OpenFabrics IEEE Company ID: 00 14 05 + */ + dev->t10_wwn.company_id = 0x001405; + dev->t10_alua.t10_dev = dev; dev->dev_attrib.da_dev = dev; diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index b2d19493a994..fe5d5ce4099c 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -136,20 +136,20 @@ void spc_gen_naa_6h_vendor_specific(struct se_device *dev, unsigned char *buf) { unsigned char *p = &dev->t10_wwn.unit_serial[0]; + u32 company_id = dev->t10_wwn.company_id; int cnt, off = 0; bool next = true; /* * Start NAA IEEE Registered Extended Identifier/Designator */ - buf[off++] = 0x6 << 4; + buf[off] = 0x6 << 4; - /* - * Use OpenFabrics IEEE Company ID: 00 14 05 - */ - buf[off++] = 0x01; - buf[off++] = 0x40; - buf[off] = (0x5 << 4); + /* IEEE COMPANY_ID */ + buf[off++] |= (company_id >> 20) & 0xf; + buf[off++] = (company_id >> 12) & 0xff; + buf[off++] = (company_id >> 4) & 0xff; + buf[off] = (company_id & 0xf) << 4; /* * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index d1f7d2a45354..85c16c266eac 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -326,6 +326,7 @@ struct t10_wwn { char model[INQUIRY_MODEL_LEN + 1]; char revision[INQUIRY_REVISION_LEN + 1]; char unit_serial[INQUIRY_VPD_SERIAL_LEN]; + u32 company_id; spinlock_t t10_vpd_lock; struct se_device *t10_dev; struct config_group t10_wwn_group; -- cgit v1.2.3 From b790a56d66eaac4a1ac6c558575fd0a694b06159 Mon Sep 17 00:00:00 2001 From: Konstantin Shelekhin Date: Thu, 13 May 2021 22:28:04 +0300 Subject: scsi: target: core: Add the VERSION DESCRIPTOR fields to the INQUIRY data Extend the standard INQUIRY data to 96 bytes and fill in the VERSION DESCRIPTOR fields. The layout follows SPC-4: - SCSI architecture standard - SCSI transport protocol standard - SCSI primary command set standard - SCSI device type command set standard All version descriptor values are defined as "no version claimed" because some initiators fail to recognize anything else. [mkp: whitespace] Link: https://lore.kernel.org/r/20210513192804.1252142-3-k.shelekhin@yadro.com Reviewed-by: Roman Bolshakov Signed-off-by: Konstantin Shelekhin Signed-off-by: Martin K. Petersen --- drivers/target/target_core_spc.c | 34 +++++++++++++++++++++++++++++++++- include/scsi/scsi_proto.h | 12 ++++++++++++ 2 files changed, 45 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 0f30b71f0acc..2cb141ed68f5 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -47,10 +47,32 @@ static void spc_fill_alua_data(struct se_lun *lun, unsigned char *buf) spin_unlock(&lun->lun_tg_pt_gp_lock); } +static u16 +spc_find_scsi_transport_vd(int proto_id) +{ + switch (proto_id) { + case SCSI_PROTOCOL_FCP: + return SCSI_VERSION_DESCRIPTOR_FCP4; + case SCSI_PROTOCOL_ISCSI: + return SCSI_VERSION_DESCRIPTOR_ISCSI; + case SCSI_PROTOCOL_SAS: + return SCSI_VERSION_DESCRIPTOR_SAS3; + case SCSI_PROTOCOL_SBP: + return SCSI_VERSION_DESCRIPTOR_SBP3; + case SCSI_PROTOCOL_SRP: + return SCSI_VERSION_DESCRIPTOR_SRP; + default: + pr_warn("Cannot find VERSION DESCRIPTOR value for unknown SCSI" + " transport PROTOCOL IDENTIFIER %#x\n", proto_id); + return 0; + } +} + sense_reason_t spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) { struct se_lun *lun = cmd->se_lun; + struct se_portal_group *tpg = lun->lun_tpg; struct se_device *dev = cmd->se_dev; struct se_session *sess = cmd->se_sess; @@ -108,7 +130,17 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) strnlen(dev->t10_wwn.model, INQUIRY_MODEL_LEN)); memcpy(&buf[32], dev->t10_wwn.revision, strnlen(dev->t10_wwn.revision, INQUIRY_REVISION_LEN)); - buf[4] = 31; /* Set additional length to 31 */ + + /* + * Set the VERSION DESCRIPTOR fields + */ + put_unaligned_be16(SCSI_VERSION_DESCRIPTOR_SAM5, &buf[58]); + put_unaligned_be16(spc_find_scsi_transport_vd(tpg->proto_id), &buf[60]); + put_unaligned_be16(SCSI_VERSION_DESCRIPTOR_SPC4, &buf[62]); + if (cmd->se_dev->transport->get_device_type(dev) == TYPE_DISK) + put_unaligned_be16(SCSI_VERSION_DESCRIPTOR_SBC3, &buf[64]); + + buf[4] = 91; /* Set additional length to 91 */ return 0; } diff --git a/include/scsi/scsi_proto.h b/include/scsi/scsi_proto.h index c36860111932..5c106c4f249e 100644 --- a/include/scsi/scsi_proto.h +++ b/include/scsi/scsi_proto.h @@ -341,4 +341,16 @@ enum zbc_zone_cond { ZBC_ZONE_COND_OFFLINE = 0xf, }; +/* Version descriptor values for INQUIRY */ +enum scsi_version_descriptor { + SCSI_VERSION_DESCRIPTOR_FCP4 = 0x0a40, + SCSI_VERSION_DESCRIPTOR_ISCSI = 0x0960, + SCSI_VERSION_DESCRIPTOR_SAM5 = 0x00a0, + SCSI_VERSION_DESCRIPTOR_SAS3 = 0x0c60, + SCSI_VERSION_DESCRIPTOR_SBC3 = 0x04c0, + SCSI_VERSION_DESCRIPTOR_SBP3 = 0x0980, + SCSI_VERSION_DESCRIPTOR_SPC4 = 0x0460, + SCSI_VERSION_DESCRIPTOR_SRP = 0x0940 +}; + #endif /* _SCSI_PROTO_H_ */ -- cgit v1.2.3 From 40d6b939e4df950c33554f1439b49df1752b0047 Mon Sep 17 00:00:00 2001 From: Zhen Lei Date: Mon, 17 May 2021 17:59:45 +0800 Subject: scsi: Fix spelling mistakes in header files Fix some spelling mistakes in comments: pathes ==> paths Resouce ==> Resource retreived ==> retrieved recevied ==> received interruped ==> interrupted [mkp: kept 'keep-alives' and 'busses'] Link: https://lore.kernel.org/r/20210517095945.7363-1-thunder.leizhen@huawei.com Signed-off-by: Zhen Lei Signed-off-by: Martin K. Petersen --- include/scsi/iscsi_proto.h | 2 +- include/scsi/libfc.h | 6 +++--- include/scsi/scsi_bsg_iscsi.h | 2 +- include/scsi/sg.h | 2 +- 4 files changed, 6 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/scsi/iscsi_proto.h b/include/scsi/iscsi_proto.h index b71b5c4f418c..7b192d88f186 100644 --- a/include/scsi/iscsi_proto.h +++ b/include/scsi/iscsi_proto.h @@ -52,7 +52,7 @@ static inline int iscsi_sna_gte(u32 n1, u32 n2) } /* - * useful common(control and data pathes) macro + * useful common(control and data paths) macro */ #define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2])) #define hton24(p, v) { \ diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h index 9b87e1a1c646..eeb8d689ff6b 100644 --- a/include/scsi/libfc.h +++ b/include/scsi/libfc.h @@ -399,7 +399,7 @@ struct fc_seq { * @sid: Source FCID * @did: Destination FCID * @esb_stat: ESB exchange status - * @r_a_tov: Resouce allocation time out value (in msecs) + * @r_a_tov: Resource allocation time out value (in msecs) * @seq_id: The next sequence ID to use * @encaps: encapsulation information for lower-level driver * @f_ctl: F_CTL flags for the sequence @@ -668,7 +668,7 @@ enum fc_lport_event { * @wwnn: World Wide Node Name * @service_params: Common service parameters * @e_d_tov: Error detection timeout value - * @r_a_tov: Resouce allocation timeout value + * @r_a_tov: Resource allocation timeout value * @rnid_gen: RNID information * @sg_supp: Indicates if scatter gather is supported * @seq_offload: Indicates if sequence offload is supported @@ -841,7 +841,7 @@ static inline void fc_lport_free_stats(struct fc_lport *lport) /** * lport_priv() - Return the private data from a local port - * @lport: The local port whose private data is to be retreived + * @lport: The local port whose private data is to be retrieved */ static inline void *lport_priv(const struct fc_lport *lport) { diff --git a/include/scsi/scsi_bsg_iscsi.h b/include/scsi/scsi_bsg_iscsi.h index 6b8128005af8..9b1f0f424a79 100644 --- a/include/scsi/scsi_bsg_iscsi.h +++ b/include/scsi/scsi_bsg_iscsi.h @@ -84,7 +84,7 @@ struct iscsi_bsg_reply { */ uint32_t result; - /* If there was reply_payload, how much was recevied ? */ + /* If there was reply_payload, how much was received ? */ uint32_t reply_payload_rcv_len; union { diff --git a/include/scsi/sg.h b/include/scsi/sg.h index 7327e12f3373..e1a42c2409cc 100644 --- a/include/scsi/sg.h +++ b/include/scsi/sg.h @@ -145,7 +145,7 @@ typedef struct sg_scsi_id { /* used by SG_GET_SCSI_ID ioctl() */ typedef struct sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */ char req_state; /* 0 -> not used, 1 -> written, 2 -> ready to read */ - char orphan; /* 0 -> normal request, 1 -> from interruped SG_IO */ + char orphan; /* 0 -> normal request, 1 -> from interrupted SG_IO */ char sg_io_owned; /* 0 -> complete with read(), 1 -> owned by SG_IO */ char problem; /* 0 -> no problem detected, 1 -> error to report */ int pack_id; /* pack_id associated with request */ -- cgit v1.2.3 From ced202f7bd78eb6a79c441a8b217e0f3d38bccfc Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:12 +0200 Subject: scsi: core: Stop using DRIVER_ERROR Return the actual error code in __scsi_execute() (which, according to the documentation, should have happened anyway). And audit all callers to cope with negative return values from __scsi_execute() and friends. [mkp: resolve conflict and return bool] Link: https://lore.kernel.org/r/20210427083046.31620-7-hare@suse.de Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/ata/libata-scsi.c | 8 ++++++++ drivers/scsi/ch.c | 3 ++- drivers/scsi/cxlflash/superpipe.c | 2 +- drivers/scsi/scsi.c | 2 ++ drivers/scsi/scsi_ioctl.c | 4 +++- drivers/scsi/scsi_lib.c | 15 +++++++++------ drivers/scsi/scsi_scan.c | 4 ++-- drivers/scsi/scsi_transport_spi.c | 2 +- drivers/scsi/sd.c | 15 +++++++++------ drivers/scsi/sd_zbc.c | 2 +- drivers/scsi/sr_ioctl.c | 4 ++++ drivers/scsi/ufs/ufshcd.c | 2 +- drivers/scsi/virtio_scsi.c | 2 +- include/scsi/scsi.h | 7 +++++-- 14 files changed, 49 insertions(+), 23 deletions(-) (limited to 'include') diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index fd8b6febbf70..513826eea682 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -409,6 +409,10 @@ int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize, sensebuf, &sshdr, (10*HZ), 5, 0, 0, NULL); + if (cmd_result < 0) { + rc = cmd_result; + goto error; + } if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ u8 *desc = sensebuf + 8; cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ @@ -490,6 +494,10 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0, sensebuf, &sshdr, (10*HZ), 5, 0, 0, NULL); + if (cmd_result < 0) { + rc = cmd_result; + goto error; + } if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ u8 *desc = sensebuf + 8; cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c index 9b89c26ccfdb..d5990f6fb313 100644 --- a/drivers/scsi/ch.c +++ b/drivers/scsi/ch.c @@ -198,7 +198,8 @@ ch_do_scsi(scsi_changer *ch, unsigned char *cmd, int cmd_len, result = scsi_execute_req(ch->device, cmd, direction, buffer, buflength, &sshdr, timeout * HZ, MAX_RETRIES, NULL); - + if (result < 0) + return result; if (driver_byte(result) == DRIVER_SENSE) { if (debug) scsi_print_sense_hdr(ch->device, ch->name, &sshdr); diff --git a/drivers/scsi/cxlflash/superpipe.c b/drivers/scsi/cxlflash/superpipe.c index ee11ec340654..caa7c5fd233d 100644 --- a/drivers/scsi/cxlflash/superpipe.c +++ b/drivers/scsi/cxlflash/superpipe.c @@ -369,7 +369,7 @@ retry: goto out; } - if (driver_byte(result) == DRIVER_SENSE) { + if (result > 0 && driver_byte(result) == DRIVER_SENSE) { result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ if (result & SAM_STAT_CHECK_CONDITION) { switch (sshdr.sense_key) { diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index e9e2f0e15ac8..99dc6ec0b6e5 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -508,6 +508,8 @@ int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer, result = scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buffer, len, &sshdr, 30 * HZ, 3, NULL); + if (result < 0) + return result; if (result && scsi_sense_valid(&sshdr) && sshdr.sense_key == ILLEGAL_REQUEST && (sshdr.asc == 0x20 || sshdr.asc == 0x24) && sshdr.ascq == 0x00) diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c index 14872c9dc78c..d34e1b41dc71 100644 --- a/drivers/scsi/scsi_ioctl.c +++ b/drivers/scsi/scsi_ioctl.c @@ -101,6 +101,8 @@ static int ioctl_internal_command(struct scsi_device *sdev, char *cmd, SCSI_LOG_IOCTL(2, sdev_printk(KERN_INFO, sdev, "Ioctl returned 0x%x\n", result)); + if (result < 0) + goto out; if (driver_byte(result) == DRIVER_SENSE && scsi_sense_valid(&sshdr)) { switch (sshdr.sense_key) { @@ -133,7 +135,7 @@ static int ioctl_internal_command(struct scsi_device *sdev, char *cmd, break; } } - +out: SCSI_LOG_IOCTL(2, sdev_printk(KERN_INFO, sdev, "IOCTL Releasing command\n")); return result; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index e763d368b892..2cf36ccc6d40 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -211,20 +211,23 @@ int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, { struct request *req; struct scsi_request *rq; - int ret = DRIVER_ERROR << 24; + int ret; req = blk_get_request(sdev->request_queue, data_direction == DMA_TO_DEVICE ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, rq_flags & RQF_PM ? BLK_MQ_REQ_PM : 0); if (IS_ERR(req)) - return ret; - rq = scsi_req(req); + return PTR_ERR(req); - if (bufflen && blk_rq_map_kern(sdev->request_queue, req, - buffer, bufflen, GFP_NOIO)) - goto out; + rq = scsi_req(req); + if (bufflen) { + ret = blk_rq_map_kern(sdev->request_queue, req, + buffer, bufflen, GFP_NOIO); + if (ret) + goto out; + } rq->cmd_len = COMMAND_SIZE(cmd[0]); memcpy(rq->cmd, cmd, rq->cmd_len); rq->retries = retries; diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 12f54571b83e..a0edcff7db1f 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -616,7 +616,7 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result, "scsi scan: INQUIRY %s with code 0x%x\n", result ? "failed" : "successful", result)); - if (result) { + if (result > 0) { /* * not-ready to ready transition [asc/ascq=0x28/0x0] * or power-on, reset [asc/ascq=0x29/0x0], continue. @@ -631,7 +631,7 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result, (sshdr.ascq == 0)) continue; } - } else { + } else if (result == 0) { /* * if nothing was transferred, we try * again. It's a workaround for some USB diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c index c37dd15d16d2..a9bb7ae2fafd 100644 --- a/drivers/scsi/scsi_transport_spi.c +++ b/drivers/scsi/scsi_transport_spi.c @@ -127,7 +127,7 @@ static int spi_execute(struct scsi_device *sdev, const void *cmd, REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER, RQF_PM, NULL); - if (driver_byte(result) != DRIVER_SENSE || + if (result < 0 || driver_byte(result) != DRIVER_SENSE || sshdr->sense_key != UNIT_ATTENTION) break; } diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 2ef2954375f4..5733fbee2bae 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1658,7 +1658,7 @@ static unsigned int sd_check_events(struct gendisk *disk, unsigned int clearing) &sshdr); /* failed to execute TUR, assume media not present */ - if (host_byte(retval)) { + if (retval < 0 || host_byte(retval)) { set_media_not_present(sdkp); goto out; } @@ -1719,6 +1719,9 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr) if (res) { sd_print_result(sdkp, "Synchronize Cache(10) failed", res); + if (res < 0) + return res; + if (driver_byte(res) == DRIVER_SENSE) sd_print_sense_hdr(sdkp, sshdr); @@ -1825,7 +1828,7 @@ static int sd_pr_command(struct block_device *bdev, u8 sa, result = scsi_execute_req(sdev, cmd, DMA_TO_DEVICE, &data, sizeof(data), &sshdr, SD_TIMEOUT, sdkp->max_retries, NULL); - if (driver_byte(result) == DRIVER_SENSE && + if (result > 0 && driver_byte(result) == DRIVER_SENSE && scsi_sense_valid(&sshdr)) { sdev_printk(KERN_INFO, sdev, "PR command failed: %d\n", result); scsi_print_sense_hdr(sdev, NULL, &sshdr); @@ -2177,7 +2180,7 @@ sd_spinup_disk(struct scsi_disk *sdkp) ((driver_byte(the_result) == DRIVER_SENSE) && sense_valid && sshdr.sense_key == UNIT_ATTENTION))); - if (driver_byte(the_result) != DRIVER_SENSE) { + if (the_result < 0 || driver_byte(the_result) != DRIVER_SENSE) { /* no sense, TUR either succeeded or failed * with a status error */ if(!spintime && !scsi_status_is_good(the_result)) { @@ -2362,7 +2365,7 @@ static int read_capacity_16(struct scsi_disk *sdkp, struct scsi_device *sdp, if (media_not_present(sdkp, &sshdr)) return -ENODEV; - if (the_result) { + if (the_result > 0) { sense_valid = scsi_sense_valid(&sshdr); if (sense_valid && sshdr.sense_key == ILLEGAL_REQUEST && @@ -2447,7 +2450,7 @@ static int read_capacity_10(struct scsi_disk *sdkp, struct scsi_device *sdp, if (media_not_present(sdkp, &sshdr)) return -ENODEV; - if (the_result) { + if (the_result > 0) { sense_valid = scsi_sense_valid(&sshdr); if (sense_valid && sshdr.sense_key == UNIT_ATTENTION && @@ -3591,7 +3594,7 @@ static int sd_start_stop_device(struct scsi_disk *sdkp, int start) SD_TIMEOUT, sdkp->max_retries, 0, RQF_PM, NULL); if (res) { sd_print_result(sdkp, "Start/Stop Unit failed", res); - if (driver_byte(res) == DRIVER_SENSE) + if (res > 0 && driver_byte(res) == DRIVER_SENSE) sd_print_sense_hdr(sdkp, &sshdr); if (scsi_sense_valid(&sshdr) && /* 0x3a is medium not present */ diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index e45d8d94574c..d4a79fdcfffe 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -116,7 +116,7 @@ static int sd_zbc_do_report_zones(struct scsi_disk *sdkp, unsigned char *buf, sd_printk(KERN_ERR, sdkp, "REPORT ZONES start lba %llu failed\n", lba); sd_print_result(sdkp, "REPORT ZONES", result); - if (driver_byte(result) == DRIVER_SENSE && + if (result > 0 && driver_byte(result) == DRIVER_SENSE && scsi_sense_valid(&sshdr)) sd_print_sense_hdr(sdkp, &sshdr); return -EIO; diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c index 15c305283b6c..0d6a716d281e 100644 --- a/drivers/scsi/sr_ioctl.c +++ b/drivers/scsi/sr_ioctl.c @@ -201,6 +201,10 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc) cgc->timeout, IOCTL_RETRIES, 0, 0, NULL); /* Minimal error checking. Ignore cases we know about, and report the rest. */ + if (result < 0) { + err = result; + goto out; + } if (driver_byte(result) != 0) { switch (sshdr->sense_key) { case UNIT_ATTENTION: diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index af527e77fe66..9523e268c0e8 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -8604,7 +8604,7 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba, sdev_printk(KERN_WARNING, sdp, "START_STOP failed for power mode: %d, result %x\n", pwr_mode, ret); - if (driver_byte(ret) == DRIVER_SENSE) + if (ret > 0 && driver_byte(ret) == DRIVER_SENSE) scsi_print_sense_hdr(sdp, NULL, &sshdr); } diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index b9c86a7e3b97..1678b6f14af9 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -355,7 +355,7 @@ static void virtscsi_rescan_hotunplug(struct virtio_scsi *vscsi) if (result == 0 && inq_result[0] >> 5) { /* PQ indicates the LUN is not attached */ scsi_remove_device(sdev); - } else if (host_byte(result) == DID_BAD_TARGET) { + } else if (result > 0 && host_byte(result) == DID_BAD_TARGET) { /* * If all LUNs of a virtio-scsi device are unplugged * it will respond with BAD TARGET on any INQUIRY diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 7f392405991b..6dc2d1b3735e 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -259,10 +259,13 @@ enum scsi_disposition { * This returns true for known good conditions that may be treated as * command completed normally */ -static inline int scsi_status_is_good(int status) +static inline bool scsi_status_is_good(int status) { + if (status < 0) + return false; + if (host_byte(status) == DID_NO_CONNECT) - return 0; + return false; /* * FIXME: bit0 is listed as reserved in SCSI-2, but is -- cgit v1.2.3 From f2b1e9c6f867ec8f929e96ba4e4010e267587448 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:13 +0200 Subject: scsi: core: Introduce scsi_build_sense() Introduce scsi_build_sense() as a wrapper around scsi_build_sense_buffer() to format the buffer and set the correct SCSI status. Link: https://lore.kernel.org/r/20210427083046.31620-8-hare@suse.de Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/ata/libata-scsi.c | 7 ++-- drivers/s390/scsi/zfcp_scsi.c | 5 +-- drivers/scsi/3w-xxxx.c | 2 +- drivers/scsi/libiscsi.c | 5 +-- drivers/scsi/lpfc/lpfc_scsi.c | 54 ++++++++++------------------- drivers/scsi/megaraid.c | 8 ++--- drivers/scsi/megaraid/megaraid_mbox.c | 14 +++----- drivers/scsi/mpt3sas/mpt3sas_scsih.c | 14 +++----- drivers/scsi/mvumi.c | 5 +-- drivers/scsi/myrb.c | 64 ++++++++--------------------------- drivers/scsi/myrs.c | 9 ++--- drivers/scsi/ps3rom.c | 7 ++-- drivers/scsi/qla2xxx/qla_isr.c | 15 ++------ drivers/scsi/scsi_debug.c | 11 +++--- drivers/scsi/scsi_lib.c | 18 ++++++++++ drivers/scsi/smartpqi/smartpqi_init.c | 3 +- drivers/scsi/stex.c | 5 +-- include/scsi/scsi_cmnd.h | 3 ++ 18 files changed, 85 insertions(+), 164 deletions(-) (limited to 'include') diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 513826eea682..61e15a2ce966 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -196,9 +196,7 @@ void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd, if (!cmd) return; - cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; - - scsi_build_sense_buffer(d_sense, cmd->sense_buffer, sk, asc, ascq); + scsi_build_sense(cmd, d_sense, sk, asc, ascq); } void ata_scsi_set_sense_information(struct ata_device *dev, @@ -882,8 +880,7 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) * ATA PASS-THROUGH INFORMATION AVAILABLE * Always in descriptor format sense. */ - scsi_build_sense_buffer(1, cmd->sense_buffer, - RECOVERED_ERROR, 0, 0x1D); + scsi_build_sense(cmd, 1, RECOVERED_ERROR, 0, 0x1D); } if ((cmd->sense_buffer[0] & 0x7f) >= 0x72) { diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index d58bf79892f2..9da9b2b2a580 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -856,10 +856,7 @@ void zfcp_scsi_set_prot(struct zfcp_adapter *adapter) */ void zfcp_scsi_dif_sense_error(struct scsi_cmnd *scmd, int ascq) { - scsi_build_sense_buffer(1, scmd->sense_buffer, - ILLEGAL_REQUEST, 0x10, ascq); - set_driver_byte(scmd, DRIVER_SENSE); - scmd->result |= SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 1, ILLEGAL_REQUEST, 0x10, ascq); set_host_byte(scmd, DID_SOFT_ERROR); } diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c index a7292883b72b..7a0b4a44395d 100644 --- a/drivers/scsi/3w-xxxx.c +++ b/drivers/scsi/3w-xxxx.c @@ -1977,7 +1977,7 @@ static int tw_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_c printk(KERN_NOTICE "3w-xxxx: scsi%d: Unknown scsi opcode: 0x%x\n", tw_dev->host->host_no, *command); tw_dev->state[request_id] = TW_S_COMPLETED; tw_state_request_finish(tw_dev, request_id); - scsi_build_sense_buffer(1, SCpnt->sense_buffer, ILLEGAL_REQUEST, 0x20, 0); + scsi_build_sense(SCpnt, 1, ILLEGAL_REQUEST, 0x20, 0); done(SCpnt); retval = 0; } diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 4834219497ee..9e69422cb77a 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -829,10 +829,7 @@ static void iscsi_scsi_cmd_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr, ascq = session->tt->check_protection(task, §or); if (ascq) { - sc->result = DRIVER_SENSE << 24 | - SAM_STAT_CHECK_CONDITION; - scsi_build_sense_buffer(1, sc->sense_buffer, - ILLEGAL_REQUEST, 0x10, ascq); + scsi_build_sense(sc, 1, ILLEGAL_REQUEST, 0x10, ascq); scsi_set_sense_information(sc->sense_buffer, SCSI_SENSE_BUFFERSIZE, sector); diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index b8bb012abb33..503919b10a6d 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -2896,10 +2896,8 @@ skipit: } out: if (err_type == BGS_GUARD_ERR_MASK) { - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x1); - cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1); + set_host_byte(cmd, DID_ABORT); phba->bg_guard_err_cnt++; lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, "9069 BLKGRD: reftag %x grd_tag err %x != %x\n", @@ -2907,10 +2905,8 @@ out: sum, guard_tag); } else if (err_type == BGS_REFTAG_ERR_MASK) { - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x3); - cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3); + set_host_byte(cmd, DID_ABORT); phba->bg_reftag_err_cnt++; lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, @@ -2919,10 +2915,8 @@ out: ref_tag, start_ref_tag); } else if (err_type == BGS_APPTAG_ERR_MASK) { - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x2); - cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2); + set_host_byte(cmd, DID_ABORT); phba->bg_apptag_err_cnt++; lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, @@ -2981,10 +2975,8 @@ lpfc_sli4_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, if (lpfc_bgs_get_guard_err(bgstat)) { ret = 1; - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x1); - cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1); + set_host_byte(cmd, DID_ABORT); phba->bg_guard_err_cnt++; lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, "9059 BLKGRD: Guard Tag error in cmd" @@ -2997,10 +2989,8 @@ lpfc_sli4_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, if (lpfc_bgs_get_reftag_err(bgstat)) { ret = 1; - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x3); - cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3); + set_host_byte(cmd, DID_ABORT); phba->bg_reftag_err_cnt++; lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, @@ -3014,10 +3004,8 @@ lpfc_sli4_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, if (lpfc_bgs_get_apptag_err(bgstat)) { ret = 1; - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x2); - cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2); + set_host_byte(cmd, DID_ABORT); phba->bg_apptag_err_cnt++; lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, @@ -3127,10 +3115,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, if (lpfc_bgs_get_guard_err(bgstat)) { ret = 1; - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x1); - cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1); + set_host_byte(cmd, DID_ABORT); phba->bg_guard_err_cnt++; lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, "9055 BLKGRD: Guard Tag error in cmd " @@ -3143,10 +3129,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, if (lpfc_bgs_get_reftag_err(bgstat)) { ret = 1; - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x3); - cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3); + set_host_byte(cmd, DID_ABORT); phba->bg_reftag_err_cnt++; lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, @@ -3160,10 +3144,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, if (lpfc_bgs_get_apptag_err(bgstat)) { ret = 1; - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x2); - cmd->result = DRIVER_SENSE << 24 | DID_ABORT << 16 | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2); + set_host_byte(cmd, DID_ABORT); phba->bg_apptag_err_cnt++; lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c index 80f546976c7e..ae3f32f89381 100644 --- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -1596,11 +1596,9 @@ mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) cmd->result = (DRIVER_SENSE << 24) | (DID_OK << 16) | (CHECK_CONDITION << 1); - } else { - cmd->sense_buffer[0] = 0x70; - cmd->sense_buffer[2] = ABORTED_COMMAND; - cmd->result |= (CHECK_CONDITION << 1); - } + } else + scsi_build_sense(cmd, 0, + ABORTED_COMMAND, 0, 0); } break; diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c index d0aa384adb76..44154e13daa3 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.c +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -1574,10 +1574,8 @@ megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) } if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) { - scp->sense_buffer[0] = 0x70; - scp->sense_buffer[2] = ILLEGAL_REQUEST; - scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB; - scp->result = CHECK_CONDITION << 1; + scsi_build_sense(scp, 0, ILLEGAL_REQUEST, + MEGA_INVALID_FIELD_IN_CDB, 0); return NULL; } @@ -2313,11 +2311,9 @@ megaraid_mbox_dpc(unsigned long devp) scp->result = DRIVER_SENSE << 24 | DID_OK << 16 | CHECK_CONDITION << 1; - } else { - scp->sense_buffer[0] = 0x70; - scp->sense_buffer[2] = ABORTED_COMMAND; - scp->result = CHECK_CONDITION << 1; - } + } else + scsi_build_sense(scp, 0, + ABORTED_COMMAND, 0, 0); } break; diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index d70ae57d897f..45a8bc67f3ae 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -5119,10 +5119,8 @@ _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status) ascq = 0x00; break; } - scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x10, - ascq); - scmd->result = DRIVER_SENSE << 24 | (DID_ABORT << 16) | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x10, ascq); + set_host_byte(scmd, DID_ABORT); } /** @@ -5879,12 +5877,8 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply) else if (!xfer_cnt && scmd->cmnd[0] == REPORT_LUNS) { mpi_reply->SCSIState = MPI2_SCSI_STATE_AUTOSENSE_VALID; mpi_reply->SCSIStatus = SAM_STAT_CHECK_CONDITION; - scmd->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; - scmd->sense_buffer[0] = 0x70; - scmd->sense_buffer[2] = ILLEGAL_REQUEST; - scmd->sense_buffer[12] = 0x20; - scmd->sense_buffer[13] = 0; + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, + 0x20, 0); } break; diff --git a/drivers/scsi/mvumi.c b/drivers/scsi/mvumi.c index 9d5743627604..94f706eeb561 100644 --- a/drivers/scsi/mvumi.c +++ b/drivers/scsi/mvumi.c @@ -2068,10 +2068,7 @@ static unsigned char mvumi_build_frame(struct mvumi_hba *mhba, return 0; error: - scmd->result = (DID_OK << 16) | (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; - scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x24, - 0); + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x24, 0); return -1; } diff --git a/drivers/scsi/myrb.c b/drivers/scsi/myrb.c index d9c82e211ae7..542ed88ef90d 100644 --- a/drivers/scsi/myrb.c +++ b/drivers/scsi/myrb.c @@ -1397,8 +1397,7 @@ myrb_mode_sense(struct myrb_hba *cb, struct scsi_cmnd *scmd, static void myrb_request_sense(struct myrb_hba *cb, struct scsi_cmnd *scmd) { - scsi_build_sense_buffer(0, scmd->sense_buffer, - NO_SENSE, 0, 0); + scsi_build_sense(scmd, 0, NO_SENSE, 0, 0); scsi_sg_copy_from_buffer(scmd, scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); } @@ -1447,10 +1446,7 @@ static int myrb_ldev_queuecommand(struct Scsi_Host *shost, case INQUIRY: if (scmd->cmnd[1] & 1) { /* Illegal request, invalid field in CDB */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - ILLEGAL_REQUEST, 0x24, 0); - scmd->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x24, 0); } else { myrb_inquiry(cb, scmd); scmd->result = (DID_OK << 16); @@ -1465,10 +1461,7 @@ static int myrb_ldev_queuecommand(struct Scsi_Host *shost, if ((scmd->cmnd[2] & 0x3F) != 0x3F && (scmd->cmnd[2] & 0x3F) != 0x08) { /* Illegal request, invalid field in CDB */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - ILLEGAL_REQUEST, 0x24, 0); - scmd->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x24, 0); } else { myrb_mode_sense(cb, scmd, ldev_info); scmd->result = (DID_OK << 16); @@ -1479,20 +1472,14 @@ static int myrb_ldev_queuecommand(struct Scsi_Host *shost, if ((scmd->cmnd[1] & 1) || (scmd->cmnd[8] & 1)) { /* Illegal request, invalid field in CDB */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - ILLEGAL_REQUEST, 0x24, 0); - scmd->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x24, 0); scmd->scsi_done(scmd); return 0; } lba = get_unaligned_be32(&scmd->cmnd[2]); if (lba) { /* Illegal request, invalid field in CDB */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - ILLEGAL_REQUEST, 0x24, 0); - scmd->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x24, 0); scmd->scsi_done(scmd); return 0; } @@ -1506,10 +1493,7 @@ static int myrb_ldev_queuecommand(struct Scsi_Host *shost, case SEND_DIAGNOSTIC: if (scmd->cmnd[1] != 0x04) { /* Illegal request, invalid field in CDB */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - ILLEGAL_REQUEST, 0x24, 0); - scmd->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x24, 0); } else { /* Assume good status */ scmd->result = (DID_OK << 16); @@ -1519,10 +1503,7 @@ static int myrb_ldev_queuecommand(struct Scsi_Host *shost, case READ_6: if (ldev_info->state == MYRB_DEVICE_WO) { /* Data protect, attempt to read invalid data */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - DATA_PROTECT, 0x21, 0x06); - scmd->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, DATA_PROTECT, 0x21, 0x06); scmd->scsi_done(scmd); return 0; } @@ -1536,10 +1517,7 @@ static int myrb_ldev_queuecommand(struct Scsi_Host *shost, case READ_10: if (ldev_info->state == MYRB_DEVICE_WO) { /* Data protect, attempt to read invalid data */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - DATA_PROTECT, 0x21, 0x06); - scmd->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, DATA_PROTECT, 0x21, 0x06); scmd->scsi_done(scmd); return 0; } @@ -1553,10 +1531,7 @@ static int myrb_ldev_queuecommand(struct Scsi_Host *shost, case READ_12: if (ldev_info->state == MYRB_DEVICE_WO) { /* Data protect, attempt to read invalid data */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - DATA_PROTECT, 0x21, 0x06); - scmd->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, DATA_PROTECT, 0x21, 0x06); scmd->scsi_done(scmd); return 0; } @@ -1569,9 +1544,7 @@ static int myrb_ldev_queuecommand(struct Scsi_Host *shost, break; default: /* Illegal request, invalid opcode */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - ILLEGAL_REQUEST, 0x20, 0); - scmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x20, 0); scmd->scsi_done(scmd); return 0; } @@ -2352,25 +2325,19 @@ static void myrb_handle_scsi(struct myrb_hba *cb, struct myrb_cmdblk *cmd_blk, "Bad Data Encountered\n"); if (scmd->sc_data_direction == DMA_FROM_DEVICE) /* Unrecovered read error */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - MEDIUM_ERROR, 0x11, 0); + scsi_build_sense(scmd, 0, MEDIUM_ERROR, 0x11, 0); else /* Write error */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - MEDIUM_ERROR, 0x0C, 0); - scmd->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, MEDIUM_ERROR, 0x0C, 0); break; case MYRB_STATUS_IRRECOVERABLE_DATA_ERROR: scmd_printk(KERN_ERR, scmd, "Irrecoverable Data Error\n"); if (scmd->sc_data_direction == DMA_FROM_DEVICE) /* Unrecovered read error, auto-reallocation failed */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - MEDIUM_ERROR, 0x11, 0x04); + scsi_build_sense(scmd, 0, MEDIUM_ERROR, 0x11, 0x04); else /* Write error, auto-reallocation failed */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - MEDIUM_ERROR, 0x0C, 0x02); - scmd->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, MEDIUM_ERROR, 0x0C, 0x02); break; case MYRB_STATUS_LDRV_NONEXISTENT_OR_OFFLINE: dev_dbg(&scmd->device->sdev_gendev, @@ -2381,8 +2348,7 @@ static void myrb_handle_scsi(struct myrb_hba *cb, struct myrb_cmdblk *cmd_blk, dev_dbg(&scmd->device->sdev_gendev, "Attempt to Access Beyond End of Logical Drive"); /* Logical block address out of range */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - NOT_READY, 0x21, 0); + scsi_build_sense(scmd, 0, NOT_READY, 0x21, 0); break; case MYRB_STATUS_DEVICE_NONRESPONSIVE: dev_dbg(&scmd->device->sdev_gendev, "Device nonresponsive\n"); diff --git a/drivers/scsi/myrs.c b/drivers/scsi/myrs.c index 3b68c68d1716..26326af23dbc 100644 --- a/drivers/scsi/myrs.c +++ b/drivers/scsi/myrs.c @@ -1600,9 +1600,7 @@ static int myrs_queuecommand(struct Scsi_Host *shost, switch (scmd->cmnd[0]) { case REPORT_LUNS: - scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, - 0x20, 0x0); - scmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x20, 0x0); scmd->scsi_done(scmd); return 0; case MODE_SENSE: @@ -1612,10 +1610,7 @@ static int myrs_queuecommand(struct Scsi_Host *shost, if ((scmd->cmnd[2] & 0x3F) != 0x3F && (scmd->cmnd[2] & 0x3F) != 0x08) { /* Illegal request, invalid field in CDB */ - scsi_build_sense_buffer(0, scmd->sense_buffer, - ILLEGAL_REQUEST, 0x24, 0); - scmd->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x24, 0); } else { myrs_mode_sense(cs, scmd, ldev_info); scmd->result = (DID_OK << 16); diff --git a/drivers/scsi/ps3rom.c b/drivers/scsi/ps3rom.c index ccb5771f1cb7..0f4b99d92f12 100644 --- a/drivers/scsi/ps3rom.c +++ b/drivers/scsi/ps3rom.c @@ -234,10 +234,8 @@ static int ps3rom_queuecommand_lck(struct scsi_cmnd *cmd, } if (res) { - memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); + scsi_build_sense(cmd, 0, ILLEGAL_REQUEST, 0, 0); cmd->result = res; - cmd->sense_buffer[0] = 0x70; - cmd->sense_buffer[2] = ILLEGAL_REQUEST; priv->curr_cmd = NULL; cmd->scsi_done(cmd); } @@ -319,8 +317,7 @@ static irqreturn_t ps3rom_interrupt(int irq, void *data) goto done; } - scsi_build_sense_buffer(0, cmd->sense_buffer, sense_key, asc, ascq); - cmd->result = SAM_STAT_CHECK_CONDITION; + scsi_build_sense(cmd, 0, sense_key, asc, ascq); done: priv->curr_cmd = NULL; diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 6e8f737a4af3..19fe2c1659d0 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -2694,31 +2694,22 @@ qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24) /* check guard */ if (e_guard != a_guard) { - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x1); - set_driver_byte(cmd, DRIVER_SENSE); + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1); set_host_byte(cmd, DID_ABORT); - cmd->result |= SAM_STAT_CHECK_CONDITION; return 1; } /* check ref tag */ if (e_ref_tag != a_ref_tag) { - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x3); - set_driver_byte(cmd, DRIVER_SENSE); + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3); set_host_byte(cmd, DID_ABORT); - cmd->result |= SAM_STAT_CHECK_CONDITION; return 1; } /* check appl tag */ if (e_app_tag != a_app_tag) { - scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, - 0x10, 0x2); - set_driver_byte(cmd, DRIVER_SENSE); + scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2); set_host_byte(cmd, DID_ABORT); - cmd->result |= SAM_STAT_CHECK_CONDITION; return 1; } diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 6e2ad003c179..a49fbd96a510 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -931,7 +931,7 @@ static void mk_sense_invalid_fld(struct scsi_cmnd *scp, } asc = c_d ? INVALID_FIELD_IN_CDB : INVALID_FIELD_IN_PARAM_LIST; memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); - scsi_build_sense_buffer(sdebug_dsense, sbuff, ILLEGAL_REQUEST, asc, 0); + scsi_build_sense(scp, sdebug_dsense, ILLEGAL_REQUEST, asc, 0); memset(sks, 0, sizeof(sks)); sks[0] = 0x80; if (c_d) @@ -957,17 +957,14 @@ static void mk_sense_invalid_fld(struct scsi_cmnd *scp, static void mk_sense_buffer(struct scsi_cmnd *scp, int key, int asc, int asq) { - unsigned char *sbuff; - - sbuff = scp->sense_buffer; - if (!sbuff) { + if (!scp->sense_buffer) { sdev_printk(KERN_ERR, scp->device, "%s: sense_buffer is NULL\n", __func__); return; } - memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); + memset(scp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); - scsi_build_sense_buffer(sdebug_dsense, sbuff, key, asc, asq); + scsi_build_sense(scp, sdebug_dsense, key, asc, asq); if (sdebug_verbose) sdev_printk(KERN_INFO, scp->device, diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 2cf36ccc6d40..9b24913a4d07 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -3222,3 +3222,21 @@ int scsi_vpd_tpg_id(struct scsi_device *sdev, int *rel_id) return group_id; } EXPORT_SYMBOL(scsi_vpd_tpg_id); + +/** + * scsi_build_sense - build sense data for a command + * @scmd: scsi command for which the sense should be formatted + * @desc: Sense format (non-zero == descriptor format, + * 0 == fixed format) + * @key: Sense key + * @asc: Additional sense code + * @ascq: Additional sense code qualifier + * + **/ +void scsi_build_sense(struct scsi_cmnd *scmd, int desc, u8 key, u8 asc, u8 ascq) +{ + scsi_build_sense_buffer(desc, scmd->sense_buffer, key, asc, ascq); + scmd->result = (DRIVER_SENSE << 24) | (DID_OK << 16) | + SAM_STAT_CHECK_CONDITION; +} +EXPORT_SYMBOL_GPL(scsi_build_sense); diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 5db16509b6e1..dcc0b9618a64 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -3087,8 +3087,7 @@ static void pqi_process_aio_io_error(struct pqi_io_request *io_request) } if (device_offline && sense_data_length == 0) - scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR, - 0x3e, 0x1); + scsi_build_sense(scmd, 0, HARDWARE_ERROR, 0x3e, 0x1); scmd->result = scsi_status; set_host_byte(scmd, host_byte); diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index 12471208c7a8..3af2a2d3bfa2 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -398,11 +398,8 @@ static struct status_msg *stex_get_status(struct st_hba *hba) static void stex_invalid_field(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) { - cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; - /* "Invalid field in cdb" */ - scsi_build_sense_buffer(0, cmd->sense_buffer, ILLEGAL_REQUEST, 0x24, - 0x0); + scsi_build_sense(cmd, 0, ILLEGAL_REQUEST, 0x24, 0x0); done(cmd); } diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index fed024f4c02a..4e2a8f2a3045 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -341,4 +341,7 @@ static inline unsigned scsi_transfer_length(struct scsi_cmnd *scmd) return xfer_len; } +extern void scsi_build_sense(struct scsi_cmnd *scmd, int desc, + u8 key, u8 asc, u8 ascq); + #endif /* _SCSI_SCSI_CMND_H */ -- cgit v1.2.3 From d0672a03e0af5dd4b07dc9175b38e44290722192 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:14 +0200 Subject: scsi: core: Introduce scsi_status_is_check_condition() Add a helper function scsi_status_is_check_condition() to encapsulate the frequent checks for SAM_STAT_CHECK_CONDITION. Link: https://lore.kernel.org/r/20210427083046.31620-9-hare@suse.de Reviewed-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/scsi/ibmvscsi/ibmvscsi.c | 2 +- drivers/scsi/scsi.c | 2 +- drivers/scsi/scsi_error.c | 4 ++-- drivers/scsi/scsi_lib.c | 2 +- include/scsi/scsi.h | 15 +++++++++++++++ 5 files changed, 20 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c index e75b0068ad84..e6a3eaaa57d9 100644 --- a/drivers/scsi/ibmvscsi/ibmvscsi.c +++ b/drivers/scsi/ibmvscsi/ibmvscsi.c @@ -1005,7 +1005,7 @@ static void handle_cmd_rsp(struct srp_event_struct *evt_struct) if (cmnd) { cmnd->result |= rsp->status; - if (((cmnd->result >> 1) & 0x1f) == CHECK_CONDITION) + if (scsi_status_is_check_condition(cmnd->result)) memcpy(cmnd->sense_buffer, rsp->data, be32_to_cpu(rsp->sense_data_len)); diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 99dc6ec0b6e5..1ce46e6e6483 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -144,7 +144,7 @@ void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) (level > 1)) { scsi_print_result(cmd, "Done", disposition); scsi_print_command(cmd); - if (status_byte(cmd->result) == CHECK_CONDITION) + if (scsi_status_is_check_condition(cmd->result)) scsi_print_sense(cmd); if (level > 3) scmd_printk(KERN_INFO, cmd, diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index d8fafe77dbbe..0967021cc06e 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -1258,7 +1258,7 @@ int scsi_eh_get_sense(struct list_head *work_q, current->comm)); break; } - if (status_byte(scmd->result) != CHECK_CONDITION) + if (!scsi_status_is_check_condition(scmd->result)) /* * don't request sense if there's no check condition * status because the error we're processing isn't one @@ -1774,7 +1774,7 @@ int scsi_noretry_cmd(struct scsi_cmnd *scmd) return (scmd->request->cmd_flags & REQ_FAILFAST_DRIVER); } - if (status_byte(scmd->result) != CHECK_CONDITION) + if (!scsi_status_is_check_condition(scmd->result)) return 0; check_type: diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 9b24913a4d07..d6b0cb2ab292 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -2164,7 +2164,7 @@ scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, goto retry; } } - if ((status_byte(result) == CHECK_CONDITION) && + if (scsi_status_is_check_condition(result) && sshdr->sense_key == UNIT_ATTENTION && retry_count) { retry_count--; diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 6dc2d1b3735e..57f0ca00ddda 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -62,6 +62,21 @@ static inline int scsi_is_wlun(u64 lun) return (lun & 0xff00) == SCSI_W_LUN_BASE; } +/** + * scsi_status_is_check_condition - check the status return. + * + * @status: the status passed up from the driver (including host and + * driver components) + * + * This returns true if the status code is SAM_STAT_CHECK_CONDITION. + */ +static inline int scsi_status_is_check_condition(int status) +{ + if (status < 0) + return false; + status &= 0xfe; + return status == SAM_STAT_CHECK_CONDITION; +} /* * MESSAGE CODES -- cgit v1.2.3 From 464a00c9e0ad45e3f42ff6ea705491a356df818e Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:15 +0200 Subject: scsi: core: Kill DRIVER_SENSE Replace the check for DRIVER_SENSE with a check for scsi_status_is_check_condition(). Audit all callsites to ensure the SAM status is set correctly. For backwards compability move the DRIVER_SENSE definition to sg.h, and update sg, bsg, and scsi_ioctl to set the DRIVER_SENSE driver_status whenever SAM_STAT_CHECK_CONDITION is present. [mkp: fix zeroday srp warning] Link: https://lore.kernel.org/r/20210427083046.31620-10-hare@suse.de Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen fix --- block/bsg.c | 2 ++ block/scsi_ioctl.c | 2 ++ drivers/ata/libata-scsi.c | 13 +++--------- drivers/scsi/NCR5380.c | 2 +- drivers/scsi/advansys.c | 2 -- drivers/scsi/aic7xxx/aic79xx_osm.c | 19 ++++++----------- drivers/scsi/aic7xxx/aic7xxx_osm.c | 1 - drivers/scsi/arcmsr/arcmsr_hba.c | 1 - drivers/scsi/ch.c | 2 +- drivers/scsi/cxlflash/superpipe.c | 3 +-- drivers/scsi/dc395x.c | 13 +++--------- drivers/scsi/esp_scsi.c | 4 +--- drivers/scsi/megaraid.c | 8 ++----- drivers/scsi/megaraid/megaraid_mbox.c | 7 ++---- drivers/scsi/megaraid/megaraid_sas_base.c | 2 -- drivers/scsi/megaraid/megaraid_sas_fusion.c | 1 - drivers/scsi/mvumi.c | 1 - drivers/scsi/scsi.c | 7 ------ drivers/scsi/scsi_debug.c | 4 ++-- drivers/scsi/scsi_ioctl.c | 3 +-- drivers/scsi/scsi_lib.c | 10 +++------ drivers/scsi/scsi_scan.c | 2 +- drivers/scsi/scsi_transport_spi.c | 2 +- drivers/scsi/sd.c | 33 +++++++++++++++-------------- drivers/scsi/sd_zbc.c | 3 +-- drivers/scsi/sg.c | 7 ++++-- drivers/scsi/stex.c | 4 ++-- drivers/scsi/sym53c8xx_2/sym_glue.c | 6 ++---- drivers/scsi/ufs/ufshcd.c | 2 +- drivers/scsi/virtio_scsi.c | 3 +-- drivers/scsi/vmw_pvscsi.c | 3 --- drivers/target/loopback/tcm_loop.c | 1 - drivers/usb/storage/cypress_atacb.c | 4 ++-- drivers/xen/xen-scsiback.c | 3 +-- include/scsi/sg.h | 11 ++++++++++ 35 files changed, 76 insertions(+), 115 deletions(-) (limited to 'include') diff --git a/block/bsg.c b/block/bsg.c index bd10922d5cbb..9e6ff0d71d25 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -97,6 +97,8 @@ static int bsg_scsi_complete_rq(struct request *rq, struct sg_io_v4 *hdr) hdr->device_status = sreq->result & 0xff; hdr->transport_status = host_byte(sreq->result); hdr->driver_status = driver_byte(sreq->result); + if (scsi_status_is_check_condition(sreq->result)) + hdr->driver_status = DRIVER_SENSE; hdr->info = 0; if (hdr->device_status || hdr->transport_status || hdr->driver_status) hdr->info |= SG_INFO_CHECK; diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 48bb4e1ea1e7..eb65bcde166f 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -257,6 +257,8 @@ static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, hdr->msg_status = msg_byte(req->result); hdr->host_status = host_byte(req->result); hdr->driver_status = driver_byte(req->result); + if (scsi_status_is_check_condition(hdr->status)) + hdr->driver_status = DRIVER_SENSE; hdr->info = 0; if (hdr->masked_status || hdr->host_status || hdr->driver_status) hdr->info |= SG_INFO_CHECK; diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 61e15a2ce966..31b47ad073ad 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -411,13 +411,12 @@ int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) rc = cmd_result; goto error; } - if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ + if (scsi_sense_valid(&sshdr)) {/* sense data available */ u8 *desc = sensebuf + 8; - cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ /* If we set cc then ATA pass-through will cause a * check condition even if no error. Filter that. */ - if (cmd_result & SAM_STAT_CHECK_CONDITION) { + if (scsi_status_is_check_condition(cmd_result)) { if (sshdr.sense_key == RECOVERED_ERROR && sshdr.asc == 0 && sshdr.ascq == 0x1d) cmd_result &= ~SAM_STAT_CHECK_CONDITION; @@ -496,9 +495,8 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) rc = cmd_result; goto error; } - if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ + if (scsi_sense_valid(&sshdr)) {/* sense data available */ u8 *desc = sensebuf + 8; - cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ /* If we set cc then ATA pass-through will cause a * check condition even if no error. Filter that. */ @@ -864,8 +862,6 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) memset(sb, 0, SCSI_SENSE_BUFFERSIZE); - cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; - /* * Use ata_to_sense_error() to map status register bits * onto sense key, asc & ascq. @@ -962,8 +958,6 @@ static void ata_gen_ata_sense(struct ata_queued_cmd *qc) memset(sb, 0, SCSI_SENSE_BUFFERSIZE); - cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; - if (ata_dev_disabled(dev)) { /* Device disabled after error recovery */ /* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */ @@ -4201,7 +4195,6 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) case REQUEST_SENSE: ata_scsi_set_sense(dev, cmd, 0, 0, 0); - cmd->result = (DRIVER_SENSE << 24); break; /* if we reach this, then writeback caching is disabled, diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index 2ddbcaa667d1..d7594b794d3c 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -542,7 +542,7 @@ static void complete_cmd(struct Scsi_Host *instance, scsi_eh_restore_cmnd(cmd, &hostdata->ses); } else { scsi_eh_restore_cmnd(cmd, &hostdata->ses); - set_driver_byte(cmd, DRIVER_SENSE); + set_status_byte(cmd, SAM_STAT_CHECK_CONDITION); } hostdata->sensing = NULL; } diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c index 800052f10699..379ff1bcfdbe 100644 --- a/drivers/scsi/advansys.c +++ b/drivers/scsi/advansys.c @@ -5964,7 +5964,6 @@ static void adv_isr_callback(ADV_DVC_VAR *adv_dvc_varp, ADV_SCSI_REQ_Q *scsiqp) ASC_DBG(2, "SAM_STAT_CHECK_CONDITION\n"); ASC_DBG_PRT_SENSE(2, scp->sense_buffer, SCSI_SENSE_BUFFERSIZE); - set_driver_byte(scp, DRIVER_SENSE); } break; @@ -6715,7 +6714,6 @@ static void asc_isr_callback(ASC_DVC_VAR *asc_dvc_varp, ASC_QDONE_INFO *qdonep) ASC_DBG(2, "SAM_STAT_CHECK_CONDITION\n"); ASC_DBG_PRT_SENSE(2, scp->sense_buffer, SCSI_SENSE_BUFFERSIZE); - set_driver_byte(scp, DRIVER_SENSE); } break; diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c index 4f7102f8eeb0..92ea24a075b8 100644 --- a/drivers/scsi/aic7xxx/aic79xx_osm.c +++ b/drivers/scsi/aic7xxx/aic79xx_osm.c @@ -1928,7 +1928,7 @@ ahd_linux_handle_scsi_status(struct ahd_softc *ahd, memcpy(cmd->sense_buffer, ahd_get_sense_buf(ahd, scb) + sense_offset, sense_size); - cmd->result |= (DRIVER_SENSE << 24); + set_status_byte(cmd, SAM_STAT_CHECK_CONDITION); #ifdef AHD_DEBUG if (ahd_debug & AHD_SHOW_SENSE) { @@ -2018,6 +2018,7 @@ ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) int new_status = DID_OK; int do_fallback = 0; int scsi_status; + struct scsi_sense_data *sense; /* * Map CAM error codes into Linux Error codes. We @@ -2041,18 +2042,12 @@ ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) switch(scsi_status) { case SAM_STAT_COMMAND_TERMINATED: case SAM_STAT_CHECK_CONDITION: - if ((cmd->result >> 24) != DRIVER_SENSE) { + sense = (struct scsi_sense_data *) + cmd->sense_buffer; + if (sense->extra_len >= 5 && + (sense->add_sense_code == 0x47 + || sense->add_sense_code == 0x48)) do_fallback = 1; - } else { - struct scsi_sense_data *sense; - - sense = (struct scsi_sense_data *) - cmd->sense_buffer; - if (sense->extra_len >= 5 && - (sense->add_sense_code == 0x47 - || sense->add_sense_code == 0x48)) - do_fallback = 1; - } break; default: break; diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c index d33f5a00bf0b..8b3d472aa3cc 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_osm.c +++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c @@ -1838,7 +1838,6 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc, if (sense_size < SCSI_SENSE_BUFFERSIZE) memset(&cmd->sense_buffer[sense_size], 0, SCSI_SENSE_BUFFERSIZE - sense_size); - cmd->result |= (DRIVER_SENSE << 24); #ifdef AHC_DEBUG if (ahc_debug & AHC_SHOW_SENSE) { int i; diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c index 42e494a7106c..c01a5b2ff67a 100644 --- a/drivers/scsi/arcmsr/arcmsr_hba.c +++ b/drivers/scsi/arcmsr/arcmsr_hba.c @@ -1335,7 +1335,6 @@ static void arcmsr_report_sense_info(struct CommandControlBlock *ccb) memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length); sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS; sensebuffer->Valid = 1; - pcmd->result |= (DRIVER_SENSE << 24); } } diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c index d5990f6fb313..fc7197abfcdf 100644 --- a/drivers/scsi/ch.c +++ b/drivers/scsi/ch.c @@ -200,7 +200,7 @@ ch_do_scsi(scsi_changer *ch, unsigned char *cmd, int cmd_len, MAX_RETRIES, NULL); if (result < 0) return result; - if (driver_byte(result) == DRIVER_SENSE) { + if (scsi_sense_valid(&sshdr)) { if (debug) scsi_print_sense_hdr(ch->device, ch->name, &sshdr); errno = ch_find_errno(&sshdr); diff --git a/drivers/scsi/cxlflash/superpipe.c b/drivers/scsi/cxlflash/superpipe.c index caa7c5fd233d..df0ebabbf387 100644 --- a/drivers/scsi/cxlflash/superpipe.c +++ b/drivers/scsi/cxlflash/superpipe.c @@ -369,8 +369,7 @@ retry: goto out; } - if (result > 0 && driver_byte(result) == DRIVER_SENSE) { - result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ + if (result > 0 && scsi_sense_valid(&sshdr)) { if (result & SAM_STAT_CHECK_CONDITION) { switch (sshdr.sense_key) { case NO_SENSE: diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c index be87d5a7583d..a713fe605dda 100644 --- a/drivers/scsi/dc395x.c +++ b/drivers/scsi/dc395x.c @@ -3239,16 +3239,9 @@ static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, } dprintkdbg(DBG_0, "srb_done: AUTO_REQSENSE2\n"); - if (srb->total_xfer_length - && srb->total_xfer_length >= cmd->underflow) - cmd->result = - MK_RES_LNX(DRIVER_SENSE, DID_OK, - srb->end_message, CHECK_CONDITION); - /*SET_RES_DID(cmd->result,DID_OK) */ - else - cmd->result = - MK_RES_LNX(DRIVER_SENSE, DID_OK, - srb->end_message, CHECK_CONDITION); + cmd->result = + MK_RES(0, DID_OK, + srb->end_message, SAM_STAT_CHECK_CONDITION); goto ckc_e; } diff --git a/drivers/scsi/esp_scsi.c b/drivers/scsi/esp_scsi.c index 342535ac0570..9a8c037a2f21 100644 --- a/drivers/scsi/esp_scsi.c +++ b/drivers/scsi/esp_scsi.c @@ -922,9 +922,7 @@ static void esp_cmd_is_done(struct esp *esp, struct esp_cmd_entry *ent, * saw originally. Also, report that we are providing * the sense data. */ - cmd->result = ((DRIVER_SENSE << 24) | - (DID_OK << 16) | - (SAM_STAT_CHECK_CONDITION << 0)); + cmd->result = SAM_STAT_CHECK_CONDITION; ent->flags &= ~ESP_CMD_FLAG_AUTOSENSE; if (esp_debug & ESP_DEBUG_AUTOSENSE) { diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c index ae3f32f89381..1880471c632a 100644 --- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -1583,9 +1583,7 @@ mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) memcpy(cmd->sense_buffer, pthru->reqsensearea, 14); - cmd->result = (DRIVER_SENSE << 24) | - (DID_OK << 16) | - (CHECK_CONDITION << 1); + cmd->result = SAM_STAT_CHECK_CONDITION; } else { if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { @@ -1593,9 +1591,7 @@ mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) memcpy(cmd->sense_buffer, epthru->reqsensearea, 14); - cmd->result = (DRIVER_SENSE << 24) | - (DID_OK << 16) | - (CHECK_CONDITION << 1); + cmd->result = SAM_STAT_CHECK_CONDITION; } else scsi_build_sense(cmd, 0, ABORTED_COMMAND, 0, 0); diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c index 44154e13daa3..bb8b2fba4b3d 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.c +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -2299,8 +2299,7 @@ megaraid_mbox_dpc(unsigned long devp) memcpy(scp->sense_buffer, pthru->reqsensearea, 14); - scp->result = DRIVER_SENSE << 24 | - DID_OK << 16 | CHECK_CONDITION << 1; + scp->result = SAM_STAT_CHECK_CONDITION; } else { if (mbox->cmd == MBOXCMD_EXTPTHRU) { @@ -2308,9 +2307,7 @@ megaraid_mbox_dpc(unsigned long devp) memcpy(scp->sense_buffer, epthru->reqsensearea, 14); - scp->result = DRIVER_SENSE << 24 | - DID_OK << 16 | - CHECK_CONDITION << 1; + scp->result = SAM_STAT_CHECK_CONDITION; } else scsi_build_sense(scp, 0, ABORTED_COMMAND, 0, 0); diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 8ed347eebf07..181407888e58 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -3617,8 +3617,6 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, SCSI_SENSE_BUFFERSIZE); memcpy(cmd->scmd->sense_buffer, cmd->sense, hdr->sense_len); - - cmd->scmd->result |= DRIVER_SENSE << 24; } break; diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 2221175ae051..1a4bd75229cf 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -2051,7 +2051,6 @@ map_cmd_status(struct fusion_context *fusion, SCSI_SENSE_BUFFERSIZE); memcpy(scmd->sense_buffer, sense, SCSI_SENSE_BUFFERSIZE); - scmd->result |= DRIVER_SENSE << 24; } /* diff --git a/drivers/scsi/mvumi.c b/drivers/scsi/mvumi.c index 94f706eeb561..f61250545025 100644 --- a/drivers/scsi/mvumi.c +++ b/drivers/scsi/mvumi.c @@ -1317,7 +1317,6 @@ static void mvumi_complete_cmd(struct mvumi_hba *mhba, struct mvumi_cmd *cmd, if (ob_frame->rsp_flag & CL_RSP_FLAG_SENSEDATA) { memcpy(cmd->scmd->sense_buffer, ob_frame->payload, sizeof(struct mvumi_sense_data)); - scmd->result |= (DRIVER_SENSE << 24); } break; default: diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 1ce46e6e6483..d26025cf5de3 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -185,13 +185,6 @@ void scsi_finish_command(struct scsi_cmnd *cmd) if (atomic_read(&sdev->device_blocked)) atomic_set(&sdev->device_blocked, 0); - /* - * If we have valid sense information, then some kind of recovery - * must have taken place. Make a note of this. - */ - if (SCSI_SENSE_VALID(cmd)) - cmd->result |= (DRIVER_SENSE << 24); - SCSI_LOG_MLCOMPLETE(4, sdev_printk(KERN_INFO, sdev, "Notifying upper driver of completion " "(result %x)\n", cmd->result)); diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index a49fbd96a510..5b3a20a140f9 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -851,10 +851,10 @@ static struct device_driver sdebug_driverfs_driver = { }; static const int check_condition_result = - (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; + SAM_STAT_CHECK_CONDITION; static const int illegal_condition_result = - (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; + (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; static const int device_qfull_result = (DID_OK << 16) | SAM_STAT_TASK_SET_FULL; diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c index d34e1b41dc71..0d13610cd6bf 100644 --- a/drivers/scsi/scsi_ioctl.c +++ b/drivers/scsi/scsi_ioctl.c @@ -103,8 +103,7 @@ static int ioctl_internal_command(struct scsi_device *sdev, char *cmd, if (result < 0) goto out; - if (driver_byte(result) == DRIVER_SENSE && - scsi_sense_valid(&sshdr)) { + if (scsi_sense_valid(&sshdr)) { switch (sshdr.sense_key) { case ILLEGAL_REQUEST: if (cmd[0] == ALLOW_MEDIUM_REMOVAL) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index d6b0cb2ab292..75d633ffdac0 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -593,8 +593,6 @@ static blk_status_t scsi_result_to_blk_status(struct scsi_cmnd *cmd, int result) case DID_OK: /* * Also check the other bytes than the status byte in result - * to handle the case when a SCSI LLD sets result to - * DRIVER_SENSE << 24 without setting SAM_STAT_CHECK_CONDITION. */ if (scsi_status_is_good(result) && (result & ~0xff) == 0) return BLK_STS_OK; @@ -790,7 +788,7 @@ static void scsi_io_completion_action(struct scsi_cmnd *cmd, int result) */ if (!level && __ratelimit(&_rs)) { scsi_print_result(cmd, NULL, FAILED); - if (driver_byte(result) == DRIVER_SENSE) + if (sense_valid) scsi_print_sense(cmd); scsi_print_command(cmd); } @@ -2152,8 +2150,7 @@ scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, * ILLEGAL REQUEST if the code page isn't supported */ if (!scsi_status_is_good(result)) { - if (driver_byte(result) == DRIVER_SENSE && - scsi_sense_valid(sshdr)) { + if (scsi_sense_valid(sshdr)) { if ((sshdr->sense_key == ILLEGAL_REQUEST) && (sshdr->asc == 0x20) && (sshdr->ascq == 0)) { /* @@ -3236,7 +3233,6 @@ EXPORT_SYMBOL(scsi_vpd_tpg_id); void scsi_build_sense(struct scsi_cmnd *scmd, int desc, u8 key, u8 asc, u8 ascq) { scsi_build_sense_buffer(desc, scmd->sense_buffer, key, asc, ascq); - scmd->result = (DRIVER_SENSE << 24) | (DID_OK << 16) | - SAM_STAT_CHECK_CONDITION; + scmd->result = SAM_STAT_CHECK_CONDITION; } EXPORT_SYMBOL_GPL(scsi_build_sense); diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index a0edcff7db1f..5ce45ef9808f 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -623,7 +623,7 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result, * INQUIRY should not yield UNIT_ATTENTION * but many buggy devices do so anyway. */ - if (driver_byte(result) == DRIVER_SENSE && + if (scsi_status_is_check_condition(result) && scsi_sense_valid(&sshdr)) { if ((sshdr.sense_key == UNIT_ATTENTION) && ((sshdr.asc == 0x28) || diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c index a9bb7ae2fafd..5af7a10e9514 100644 --- a/drivers/scsi/scsi_transport_spi.c +++ b/drivers/scsi/scsi_transport_spi.c @@ -127,7 +127,7 @@ static int spi_execute(struct scsi_device *sdev, const void *cmd, REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER, RQF_PM, NULL); - if (result < 0 || driver_byte(result) != DRIVER_SENSE || + if (result < 0 || !scsi_sense_valid(sshdr) || sshdr->sense_key != UNIT_ATTENTION) break; } diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 5733fbee2bae..66cb161667af 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1722,16 +1722,17 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr) if (res < 0) return res; - if (driver_byte(res) == DRIVER_SENSE) + if (scsi_status_is_check_condition(res) && + scsi_sense_valid(sshdr)) { sd_print_sense_hdr(sdkp, sshdr); - /* we need to evaluate the error return */ - if (scsi_sense_valid(sshdr) && - (sshdr->asc == 0x3a || /* medium not present */ - sshdr->asc == 0x20 || /* invalid command */ - (sshdr->asc == 0x74 && sshdr->ascq == 0x71))) /* drive is password locked */ + /* we need to evaluate the error return */ + if (sshdr->asc == 0x3a || /* medium not present */ + sshdr->asc == 0x20 || /* invalid command */ + (sshdr->asc == 0x74 && sshdr->ascq == 0x71)) /* drive is password locked */ /* this is no error here */ return 0; + } switch (host_byte(res)) { /* ignore errors due to racing a disconnection */ @@ -1828,7 +1829,7 @@ static int sd_pr_command(struct block_device *bdev, u8 sa, result = scsi_execute_req(sdev, cmd, DMA_TO_DEVICE, &data, sizeof(data), &sshdr, SD_TIMEOUT, sdkp->max_retries, NULL); - if (result > 0 && driver_byte(result) == DRIVER_SENSE && + if (scsi_status_is_check_condition(result) && scsi_sense_valid(&sshdr)) { sdev_printk(KERN_INFO, sdev, "PR command failed: %d\n", result); scsi_print_sense_hdr(sdev, NULL, &sshdr); @@ -2072,7 +2073,7 @@ static int sd_done(struct scsi_cmnd *SCpnt) } sdkp->medium_access_timed_out = 0; - if (driver_byte(result) != DRIVER_SENSE && + if (!scsi_status_is_check_condition(result) && (!sense_valid || sense_deferred)) goto out; @@ -2175,12 +2176,12 @@ sd_spinup_disk(struct scsi_disk *sdkp) if (the_result) sense_valid = scsi_sense_valid(&sshdr); retries++; - } while (retries < 3 && + } while (retries < 3 && (!scsi_status_is_good(the_result) || - ((driver_byte(the_result) == DRIVER_SENSE) && + (scsi_status_is_check_condition(the_result) && sense_valid && sshdr.sense_key == UNIT_ATTENTION))); - if (the_result < 0 || driver_byte(the_result) != DRIVER_SENSE) { + if (!scsi_status_is_check_condition(the_result)) { /* no sense, TUR either succeeded or failed * with a status error */ if(!spintime && !scsi_status_is_good(the_result)) { @@ -2308,7 +2309,7 @@ static void read_capacity_error(struct scsi_disk *sdkp, struct scsi_device *sdp, struct scsi_sense_hdr *sshdr, int sense_valid, int the_result) { - if (driver_byte(the_result) == DRIVER_SENSE) + if (sense_valid) sd_print_sense_hdr(sdkp, sshdr); else sd_printk(KERN_NOTICE, sdkp, "Sense not available.\n"); @@ -3594,12 +3595,12 @@ static int sd_start_stop_device(struct scsi_disk *sdkp, int start) SD_TIMEOUT, sdkp->max_retries, 0, RQF_PM, NULL); if (res) { sd_print_result(sdkp, "Start/Stop Unit failed", res); - if (res > 0 && driver_byte(res) == DRIVER_SENSE) + if (res > 0 && scsi_sense_valid(&sshdr)) { sd_print_sense_hdr(sdkp, &sshdr); - if (scsi_sense_valid(&sshdr) && /* 0x3a is medium not present */ - sshdr.asc == 0x3a) - res = 0; + if (sshdr.asc == 0x3a) + res = 0; + } } /* SCSI error codes must not go to the generic layer */ diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index d4a79fdcfffe..186b5ff52c3a 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -116,8 +116,7 @@ static int sd_zbc_do_report_zones(struct scsi_disk *sdkp, unsigned char *buf, sd_printk(KERN_ERR, sdkp, "REPORT ZONES start lba %llu failed\n", lba); sd_print_result(sdkp, "REPORT ZONES", result); - if (result > 0 && driver_byte(result) == DRIVER_SENSE && - scsi_sense_valid(&sshdr)) + if (result > 0 && scsi_sense_valid(&sshdr)) sd_print_sense_hdr(sdkp, &sshdr); return -EIO; } diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index def7ec3bbaf9..faf7716c8851 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -498,9 +498,11 @@ sg_read(struct file *filp, char __user *buf, size_t count, loff_t * ppos) old_hdr->host_status = hp->host_status; old_hdr->driver_status = hp->driver_status; if ((CHECK_CONDITION & hp->masked_status) || - (DRIVER_SENSE & hp->driver_status)) + (srp->sense_b[0] & 0x70) == 0x70) { + old_hdr->driver_status = DRIVER_SENSE; memcpy(old_hdr->sense_buffer, srp->sense_b, sizeof (old_hdr->sense_buffer)); + } switch (hp->host_status) { /* This setup of 'result' is for backward compatibility and is best ignored by the user who should use target, host + driver status */ @@ -574,7 +576,7 @@ sg_new_read(Sg_fd * sfp, char __user *buf, size_t count, Sg_request * srp) hp->sb_len_wr = 0; if ((hp->mx_sb_len > 0) && hp->sbp) { if ((CHECK_CONDITION & hp->masked_status) || - (DRIVER_SENSE & hp->driver_status)) { + (srp->sense_b[0] & 0x70) == 0x70) { int sb_len = SCSI_SENSE_BUFFERSIZE; sb_len = (hp->mx_sb_len > sb_len) ? sb_len : hp->mx_sb_len; len = 8 + (int) srp->sense_b[7]; /* Additional sense length field */ @@ -583,6 +585,7 @@ sg_new_read(Sg_fd * sfp, char __user *buf, size_t count, Sg_request * srp) err = -EFAULT; goto err_out; } + hp->driver_status = DRIVER_SENSE; hp->sb_len_wr = len; } } diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index 3af2a2d3bfa2..491b435273a6 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -737,7 +737,7 @@ static void stex_scsi_done(struct st_ccb *ccb) result |= DID_OK << 16; break; case SAM_STAT_CHECK_CONDITION: - result |= DRIVER_SENSE << 24; + result |= DID_OK << 16; break; case SAM_STAT_BUSY: result |= DID_BUS_BUSY << 16; @@ -748,7 +748,7 @@ static void stex_scsi_done(struct st_ccb *ccb) } } else if (ccb->srb_status & SRB_SEE_SENSE) - result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION; + result = SAM_STAT_CHECK_CONDITION; else switch (ccb->srb_status) { case SRB_STATUS_SELECTION_TIMEOUT: result = DID_NO_CONNECT << 16; diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c index d9a045f9858c..16b65fc4405c 100644 --- a/drivers/scsi/sym53c8xx_2/sym_glue.c +++ b/drivers/scsi/sym53c8xx_2/sym_glue.c @@ -170,9 +170,8 @@ static int sym_xerr_cam_status(int cam_status, int x_status) void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid) { struct scsi_cmnd *cmd = cp->cmd; - u_int cam_status, scsi_status, drv_status; + u_int cam_status, scsi_status; - drv_status = 0; cam_status = DID_OK; scsi_status = cp->ssss_status; @@ -186,7 +185,6 @@ void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid) cp->xerr_status == 0) { cam_status = sym_xerr_cam_status(DID_OK, cp->sv_xerr_status); - drv_status = DRIVER_SENSE; /* * Bounce back the sense data to user. */ @@ -235,7 +233,7 @@ void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid) cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status); } scsi_set_resid(cmd, resid); - cmd->result = (drv_status << 24) | (cam_status << 16) | scsi_status; + cmd->result = (cam_status << 16) | scsi_status; } static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 9523e268c0e8..02267b090729 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -8604,7 +8604,7 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba, sdev_printk(KERN_WARNING, sdp, "START_STOP failed for power mode: %d, result %x\n", pwr_mode, ret); - if (ret > 0 && driver_byte(ret) == DRIVER_SENSE) + if (ret > 0 && scsi_sense_valid(&sshdr)) scsi_print_sense_hdr(sdp, NULL, &sshdr); } diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index 1678b6f14af9..fd69a03d6137 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -161,8 +161,7 @@ static void virtscsi_complete_cmd(struct virtio_scsi *vscsi, void *buf) min_t(u32, virtio32_to_cpu(vscsi->vdev, resp->sense_len), VIRTIO_SCSI_SENSE_SIZE)); - if (resp->sense_len) - set_driver_byte(sc, DRIVER_SENSE); + set_status_byte(sc, SAM_STAT_CHECK_CONDITION); } sc->scsi_done(sc); diff --git a/drivers/scsi/vmw_pvscsi.c b/drivers/scsi/vmw_pvscsi.c index 8a79605d9652..f0707eaad9f7 100644 --- a/drivers/scsi/vmw_pvscsi.c +++ b/drivers/scsi/vmw_pvscsi.c @@ -576,9 +576,6 @@ static void pvscsi_complete_request(struct pvscsi_adapter *adapter, cmd->result = (DID_RESET << 16); } else { cmd->result = (DID_OK << 16) | sdstat; - if (sdstat == SAM_STAT_CHECK_CONDITION && - cmd->sense_buffer) - cmd->result |= (DRIVER_SENSE << 24); } } else switch (btstat) { diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 2687fd7d45db..6d0b0e67e79e 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -566,7 +566,6 @@ static int tcm_loop_queue_data_or_status(const char *func, memcpy(sc->sense_buffer, se_cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); sc->result = SAM_STAT_CHECK_CONDITION; - set_driver_byte(sc, DRIVER_SENSE); } else sc->result = scsi_status; diff --git a/drivers/usb/storage/cypress_atacb.c b/drivers/usb/storage/cypress_atacb.c index a6f3267bbef6..2f7093ba5a2f 100644 --- a/drivers/usb/storage/cypress_atacb.c +++ b/drivers/usb/storage/cypress_atacb.c @@ -221,11 +221,11 @@ static void cypress_atacb_passthrough(struct scsi_cmnd *srb, struct us_data *us) desc[12] = regs[6]; /* device */ desc[13] = regs[7]; /* command */ - srb->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; + srb->result = SAM_STAT_CHECK_CONDITION; } goto end; invalid_fld: - srb->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; + srb->result = SAM_STAT_CHECK_CONDITION; memcpy(srb->sense_buffer, usb_stor_sense_invalidCDB, diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index 55a4763da05e..3ec038cd4332 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -1401,8 +1401,7 @@ static int scsiback_queue_status(struct se_cmd *se_cmd) if (se_cmd->sense_buffer && ((se_cmd->se_cmd_flags & SCF_TRANSPORT_TASK_SENSE) || (se_cmd->se_cmd_flags & SCF_EMULATED_TASK_SENSE))) - pending_req->result = (DRIVER_SENSE << 24) | - SAM_STAT_CHECK_CONDITION; + pending_req->result = SAM_STAT_CHECK_CONDITION; else pending_req->result = se_cmd->scsi_status; diff --git a/include/scsi/sg.h b/include/scsi/sg.h index e1a42c2409cc..d5c17775c3b4 100644 --- a/include/scsi/sg.h +++ b/include/scsi/sg.h @@ -131,6 +131,17 @@ struct compat_sg_io_hdr { #define SG_INFO_DIRECT_IO 0x2 /* direct IO requested and performed */ #define SG_INFO_MIXED_IO 0x4 /* part direct, part indirect IO */ +/* + * Obsolete DRIVER_SENSE driver byte + * + * Originally the SCSI midlayer would set the DRIVER_SENSE driver byte when + * a sense code was generated and a sense buffer was allocated. + * However, as nowadays every scsi command has a sense code allocated this + * distinction became moot as one could check the sense buffer directly. + * Consequently this byte is not set anymore from the midlayer, but SG will + * keep setting this byte to be compatible with previous releases. + */ +#define DRIVER_SENSE 0x08 typedef struct sg_scsi_id { /* used by SG_GET_SCSI_ID ioctl() */ int host_no; /* as in "scsi" where 'n' is one of 0, 1, 2 etc */ -- cgit v1.2.3 From 54c29086195fd72b6a290ef367e71f73fa657b1f Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:20 +0200 Subject: scsi: core: Drop the now obsolete driver_byte definitions The driver_byte field in the result is now unused, so we can drop the definitions. Link: https://lore.kernel.org/r/20210427083046.31620-15-hare@suse.de Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- Documentation/scsi/scsi_mid_low_api.rst | 3 +-- block/bsg-lib.c | 2 +- block/bsg.c | 2 +- block/scsi_ioctl.c | 2 +- drivers/scsi/constants.c | 15 --------------- drivers/scsi/scsi_logging.c | 10 ++-------- drivers/scsi/sd.c | 9 ++++----- drivers/scsi/sr.c | 2 +- drivers/scsi/sr_ioctl.c | 2 +- drivers/scsi/st.c | 4 ++-- drivers/xen/xen-scsiback.c | 4 ++-- include/scsi/scsi.h | 16 ---------------- include/scsi/scsi_cmnd.h | 4 ---- include/scsi/sg.h | 2 ++ include/trace/events/scsi.h | 15 +-------------- 15 files changed, 19 insertions(+), 73 deletions(-) (limited to 'include') diff --git a/Documentation/scsi/scsi_mid_low_api.rst b/Documentation/scsi/scsi_mid_low_api.rst index 096ffe9cae0e..b99b4e418ba9 100644 --- a/Documentation/scsi/scsi_mid_low_api.rst +++ b/Documentation/scsi/scsi_mid_low_api.rst @@ -1174,8 +1174,7 @@ Members of interest: target device). 'result' is a 32 bit unsigned integer that can be viewed as 4 related bytes. The SCSI status value is in the LSB. See include/scsi/scsi.h status_byte(), - msg_byte(), host_byte() and driver_byte() macros and - related constants. + msg_byte() and host_byte() macros and related constants. sense_buffer - an array (maximum size: SCSI_SENSE_BUFFERSIZE bytes) that should be written when the SCSI status (LSB of 'result') diff --git a/block/bsg-lib.c b/block/bsg-lib.c index 330fede77271..cf1811261722 100644 --- a/block/bsg-lib.c +++ b/block/bsg-lib.c @@ -84,7 +84,7 @@ static int bsg_transport_complete_rq(struct request *rq, struct sg_io_v4 *hdr) */ hdr->device_status = job->result & 0xff; hdr->transport_status = host_byte(job->result); - hdr->driver_status = driver_byte(job->result); + hdr->driver_status = 0; hdr->info = 0; if (hdr->device_status || hdr->transport_status || hdr->driver_status) hdr->info |= SG_INFO_CHECK; diff --git a/block/bsg.c b/block/bsg.c index 9e6ff0d71d25..33e3f82ed03a 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -96,7 +96,7 @@ static int bsg_scsi_complete_rq(struct request *rq, struct sg_io_v4 *hdr) */ hdr->device_status = sreq->result & 0xff; hdr->transport_status = host_byte(sreq->result); - hdr->driver_status = driver_byte(sreq->result); + hdr->driver_status = 0; if (scsi_status_is_check_condition(sreq->result)) hdr->driver_status = DRIVER_SENSE; hdr->info = 0; diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index eb65bcde166f..3a9c071b3799 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -256,7 +256,7 @@ static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, hdr->masked_status = status_byte(req->result); hdr->msg_status = msg_byte(req->result); hdr->host_status = host_byte(req->result); - hdr->driver_status = driver_byte(req->result); + hdr->driver_status = 0; if (scsi_status_is_check_condition(hdr->status)) hdr->driver_status = DRIVER_SENSE; hdr->info = 0; diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c index 84d73f57292b..41bcfed08260 100644 --- a/drivers/scsi/constants.c +++ b/drivers/scsi/constants.c @@ -406,10 +406,6 @@ static const char * const hostbyte_table[]={ "DID_TRANSPORT_DISRUPTED", "DID_TRANSPORT_FAILFAST", "DID_TARGET_FAILURE", "DID_NEXUS_FAILURE", "DID_ALLOC_FAILURE", "DID_MEDIUM_ERROR" }; -static const char * const driverbyte_table[]={ -"DRIVER_OK", "DRIVER_BUSY", "DRIVER_SOFT", "DRIVER_MEDIA", "DRIVER_ERROR", -"DRIVER_INVALID", "DRIVER_TIMEOUT", "DRIVER_HARD", "DRIVER_SENSE"}; - const char *scsi_hostbyte_string(int result) { const char *hb_string = NULL; @@ -421,17 +417,6 @@ const char *scsi_hostbyte_string(int result) } EXPORT_SYMBOL(scsi_hostbyte_string); -const char *scsi_driverbyte_string(int result) -{ - const char *db_string = NULL; - int db = driver_byte(result); - - if (db < ARRAY_SIZE(driverbyte_table)) - db_string = driverbyte_table[db]; - return db_string; -} -EXPORT_SYMBOL(scsi_driverbyte_string); - #define scsi_mlreturn_name(result) { result, #result } static const struct value_name_pair scsi_mlreturn_arr[] = { scsi_mlreturn_name(NEEDS_RETRY), diff --git a/drivers/scsi/scsi_logging.c b/drivers/scsi/scsi_logging.c index 8ea44c6595ef..2317717935e9 100644 --- a/drivers/scsi/scsi_logging.c +++ b/drivers/scsi/scsi_logging.c @@ -385,7 +385,6 @@ void scsi_print_result(const struct scsi_cmnd *cmd, const char *msg, size_t off, logbuf_len; const char *mlret_string = scsi_mlreturn_string(disposition); const char *hb_string = scsi_hostbyte_string(cmd->result); - const char *db_string = scsi_driverbyte_string(cmd->result); unsigned long cmd_age = (jiffies - cmd->jiffies_at_alloc) / HZ; logbuf = scsi_log_reserve_buffer(&logbuf_len); @@ -426,13 +425,8 @@ void scsi_print_result(const struct scsi_cmnd *cmd, const char *msg, if (WARN_ON(off >= logbuf_len)) goto out_printk; - if (db_string) - off += scnprintf(logbuf + off, logbuf_len - off, - "driverbyte=%s ", db_string); - else - off += scnprintf(logbuf + off, logbuf_len - off, - "driverbyte=0x%02x ", - driver_byte(cmd->result)); + off += scnprintf(logbuf + off, logbuf_len - off, + "driverbyte=DRIVER_OK "); off += scnprintf(logbuf + off, logbuf_len - off, "cmd_age=%lus", cmd_age); diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 66cb161667af..20739072f21a 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -3810,15 +3810,14 @@ void sd_print_sense_hdr(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr) void sd_print_result(const struct scsi_disk *sdkp, const char *msg, int result) { const char *hb_string = scsi_hostbyte_string(result); - const char *db_string = scsi_driverbyte_string(result); - if (hb_string || db_string) + if (hb_string) sd_printk(KERN_INFO, sdkp, "%s: Result: hostbyte=%s driverbyte=%s\n", msg, hb_string ? hb_string : "invalid", - db_string ? db_string : "invalid"); + "DRIVER_OK"); else sd_printk(KERN_INFO, sdkp, - "%s: Result: hostbyte=0x%02x driverbyte=0x%02x\n", - msg, host_byte(result), driver_byte(result)); + "%s: Result: hostbyte=0x%02x driverbyte=%s\n", + msg, host_byte(result), "DRIVER_OK"); } diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 9b2ccf0c9a8c..e9cb874f6891 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -338,7 +338,7 @@ static int sr_done(struct scsi_cmnd *SCpnt) * care is taken to avoid unnecessary additional work such as * memcpy's that could be avoided. */ - if (driver_byte(result) != 0 && /* An error occurred */ + if (status_byte(result) == SAM_STAT_CHECK_CONDITION && (SCpnt->sense_buffer[0] & 0x7f) == 0x70) { /* Sense current */ switch (SCpnt->sense_buffer[2]) { case MEDIUM_ERROR: diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c index 0d6a716d281e..93c77dd9a476 100644 --- a/drivers/scsi/sr_ioctl.c +++ b/drivers/scsi/sr_ioctl.c @@ -205,7 +205,7 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc) err = result; goto out; } - if (driver_byte(result) != 0) { + if (status_byte(result) == SAM_STAT_CHECK_CONDITION) { switch (sshdr->sense_key) { case UNIT_ATTENTION: SDev->changed = 1; diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c index 5d840bc69639..66f48bd6da76 100644 --- a/drivers/scsi/st.c +++ b/drivers/scsi/st.c @@ -390,8 +390,8 @@ static int st_chk_result(struct scsi_tape *STp, struct st_request * SRpnt) if (!debugging) { /* Abnormal conditions for tape */ if (!cmdstatp->have_sense) st_printk(KERN_WARNING, STp, - "Error %x (driver bt 0x%x, host bt 0x%x).\n", - result, driver_byte(result), host_byte(result)); + "Error %x (driver bt 0, host bt 0x%x).\n", + result, host_byte(result)); else if (cmdstatp->have_sense && scode != NO_SENSE && scode != RECOVERED_ERROR && diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index b7f0ff80efe2..a6bb2600a2d7 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -222,10 +222,10 @@ static void scsiback_print_status(char *sense_buffer, int errors, { struct scsiback_tpg *tpg = pending_req->v2p->tpg; - pr_err("[%s:%d] cmnd[0]=%02x -> st=%02x msg=%02x host=%02x drv=%02x\n", + pr_err("[%s:%d] cmnd[0]=%02x -> st=%02x msg=%02x host=%02x\n", tpg->tport->tport_name, pending_req->v2p->lun, pending_req->cmnd[0], status_byte(errors), msg_byte(errors), - host_byte(errors), driver_byte(errors)); + host_byte(errors)); } static void scsiback_fast_flush_area(struct vscsibk_pend *req) diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 57f0ca00ddda..bd8eb6033bf4 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -152,20 +152,6 @@ static inline int scsi_status_is_check_condition(int status) #define DID_TRANSPORT_MARGINAL 0x14 /* Transport marginal errors */ #define DRIVER_OK 0x00 /* Driver status */ -/* - * These indicate the error that occurred, and what is available. - */ - -#define DRIVER_BUSY 0x01 -#define DRIVER_SOFT 0x02 -#define DRIVER_MEDIA 0x03 -#define DRIVER_ERROR 0x04 - -#define DRIVER_INVALID 0x05 -#define DRIVER_TIMEOUT 0x06 -#define DRIVER_HARD 0x07 -#define DRIVER_SENSE 0x08 - /* * Internal return values. */ @@ -197,12 +183,10 @@ enum scsi_disposition { * status byte = set from target device * msg_byte = return status from host adapter itself. * host_byte = set by low-level driver to indicate status. - * driver_byte = set by mid-level. */ #define status_byte(result) (((result) >> 1) & 0x7f) #define msg_byte(result) (((result) >> 8) & 0xff) #define host_byte(result) (((result) >> 16) & 0xff) -#define driver_byte(result) (((result) >> 24) & 0xff) #define sense_class(sense) (((sense) >> 4) & 0x7) #define sense_error(sense) ((sense) & 0xf) diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 4e2a8f2a3045..e7986b9babaf 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -325,10 +325,6 @@ static inline void set_host_byte(struct scsi_cmnd *cmd, char status) cmd->result = (cmd->result & 0xff00ffff) | (status << 16); } -static inline void set_driver_byte(struct scsi_cmnd *cmd, char status) -{ - cmd->result = (cmd->result & 0x00ffffff) | (status << 24); -} static inline unsigned scsi_transfer_length(struct scsi_cmnd *scmd) { diff --git a/include/scsi/sg.h b/include/scsi/sg.h index d5c17775c3b4..e9dd5477ca7a 100644 --- a/include/scsi/sg.h +++ b/include/scsi/sg.h @@ -142,6 +142,8 @@ struct compat_sg_io_hdr { * keep setting this byte to be compatible with previous releases. */ #define DRIVER_SENSE 0x08 +/* Obsolete driver_byte() declaration */ +#define driver_byte(result) (((result) >> 24) & 0xff) typedef struct sg_scsi_id { /* used by SG_GET_SCSI_ID ioctl() */ int host_no; /* as in "scsi" where 'n' is one of 0, 1, 2 etc */ diff --git a/include/trace/events/scsi.h b/include/trace/events/scsi.h index f624969a4f14..428cca71c2ba 100644 --- a/include/trace/events/scsi.h +++ b/include/trace/events/scsi.h @@ -124,19 +124,6 @@ scsi_hostbyte_name(DID_TRANSPORT_DISRUPTED), \ scsi_hostbyte_name(DID_TRANSPORT_FAILFAST)) -#define scsi_driverbyte_name(result) { result, #result } -#define show_driverbyte_name(val) \ - __print_symbolic(val, \ - scsi_driverbyte_name(DRIVER_OK), \ - scsi_driverbyte_name(DRIVER_BUSY), \ - scsi_driverbyte_name(DRIVER_SOFT), \ - scsi_driverbyte_name(DRIVER_MEDIA), \ - scsi_driverbyte_name(DRIVER_ERROR), \ - scsi_driverbyte_name(DRIVER_INVALID), \ - scsi_driverbyte_name(DRIVER_TIMEOUT), \ - scsi_driverbyte_name(DRIVER_HARD), \ - scsi_driverbyte_name(DRIVER_SENSE)) - #define scsi_msgbyte_name(result) { result, #result } #define show_msgbyte_name(val) \ __print_symbolic(val, \ @@ -327,7 +314,7 @@ DECLARE_EVENT_CLASS(scsi_cmd_done_timeout_template, show_opcode_name(__entry->opcode), __parse_cdb(__get_dynamic_array(cmnd), __entry->cmd_len), __print_hex(__get_dynamic_array(cmnd), __entry->cmd_len), - show_driverbyte_name(((__entry->result) >> 24) & 0xff), + "DRIVER_OK", show_hostbyte_name(((__entry->result) >> 16) & 0xff), show_msgbyte_name(((__entry->result) >> 8) & 0xff), show_statusbyte_name(__entry->result & 0xff)) -- cgit v1.2.3 From f6b5a697064900c207876c12af55e176ec83f49e Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:22 +0200 Subject: scsi: core: Add get_{status,host}_byte() accessor functions Add accessor functions for the host and status byte. Link: https://lore.kernel.org/r/20210427083046.31620-17-hare@suse.de Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- include/scsi/scsi_cmnd.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include') diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index e7986b9babaf..760990116024 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -315,6 +315,11 @@ static inline void set_status_byte(struct scsi_cmnd *cmd, char status) cmd->result = (cmd->result & 0xffffff00) | status; } +static inline u8 get_status_byte(struct scsi_cmnd *cmd) +{ + return cmd->result & 0xff; +} + static inline void set_msg_byte(struct scsi_cmnd *cmd, char status) { cmd->result = (cmd->result & 0xffff00ff) | (status << 8); @@ -325,6 +330,11 @@ static inline void set_host_byte(struct scsi_cmnd *cmd, char status) cmd->result = (cmd->result & 0xff00ffff) | (status << 16); } +static inline u8 get_host_byte(struct scsi_cmnd *cmd) +{ + return (cmd->result >> 16) & 0xff; +} + static inline unsigned scsi_transfer_length(struct scsi_cmnd *scmd) { -- cgit v1.2.3 From 735b830c6104af6f4ec0e9a22822cd4067ac0bf5 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:23 +0200 Subject: scsi: core: Add scsi_msg_to_host_byte() Add helper to convert message byte into a host byte code. Link: https://lore.kernel.org/r/20210427083046.31620-18-hare@suse.de Reviewed-by: Bart Van Assche Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- include/scsi/scsi_cmnd.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'include') diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 760990116024..efcf33c29efa 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -335,6 +335,32 @@ static inline u8 get_host_byte(struct scsi_cmnd *cmd) return (cmd->result >> 16) & 0xff; } +/** + * scsi_msg_to_host_byte() - translate message byte + * + * Translate the SCSI parallel message byte to a matching + * host byte setting. A message of COMMAND_COMPLETE indicates + * a successful command execution, any other message indicate + * an error. As the messages themselves only have a meaning + * for the SCSI parallel protocol this function translates + * them into a matching host byte value for SCSI EH. + */ +static inline void scsi_msg_to_host_byte(struct scsi_cmnd *cmd, u8 msg) +{ + switch (msg) { + case COMMAND_COMPLETE: + break; + case ABORT_TASK_SET: + set_host_byte(cmd, DID_ABORT); + break; + case TARGET_RESET: + set_host_byte(cmd, DID_RESET); + break; + default: + set_host_byte(cmd, DID_ERROR); + break; + } +} static inline unsigned scsi_transfer_length(struct scsi_cmnd *scmd) { -- cgit v1.2.3 From 54cf31d07aa859e142c527f04eefa254659e1af2 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:43 +0200 Subject: scsi: core: Drop message byte helper The message byte is now unused, so we can drop the helper to set the message byte and the check for message bytes during error recovery. Link: https://lore.kernel.org/r/20210427083046.31620-38-hare@suse.de Reviewed-by: Bart Van Assche Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- block/scsi_ioctl.c | 2 +- drivers/scsi/scsi_error.c | 18 ++---------------- drivers/scsi/sg.c | 2 +- drivers/xen/xen-scsiback.c | 2 +- include/scsi/scsi.h | 3 +-- include/scsi/scsi_cmnd.h | 5 ----- 6 files changed, 6 insertions(+), 26 deletions(-) (limited to 'include') diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 3a9c071b3799..fa6df11b8bdd 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -254,7 +254,7 @@ static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, */ hdr->status = req->result & 0xff; hdr->masked_status = status_byte(req->result); - hdr->msg_status = msg_byte(req->result); + hdr->msg_status = COMMAND_COMPLETE; hdr->host_status = host_byte(req->result); hdr->driver_status = 0; if (scsi_status_is_check_condition(hdr->status)) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 689ee628eff9..3e6e456816fc 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -741,12 +741,6 @@ static enum scsi_disposition scsi_eh_completed_normally(struct scsi_cmnd *scmd) if (host_byte(scmd->result) != DID_OK) return FAILED; - /* - * next, check the message byte. - */ - if (msg_byte(scmd->result) != COMMAND_COMPLETE) - return FAILED; - /* * now, check the status byte to see if this indicates * anything special. @@ -1766,8 +1760,7 @@ int scsi_noretry_cmd(struct scsi_cmnd *scmd) case DID_PARITY: return (scmd->request->cmd_flags & REQ_FAILFAST_DEV); case DID_ERROR: - if (msg_byte(scmd->result) == COMMAND_COMPLETE && - status_byte(scmd->result) == RESERVATION_CONFLICT) + if (status_byte(scmd->result) == RESERVATION_CONFLICT) return 0; fallthrough; case DID_SOFT_ERROR: @@ -1883,8 +1876,7 @@ enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *scmd) */ return SUCCESS; case DID_ERROR: - if (msg_byte(scmd->result) == COMMAND_COMPLETE && - status_byte(scmd->result) == RESERVATION_CONFLICT) + if (status_byte(scmd->result) == RESERVATION_CONFLICT) /* * execute reservation conflict processing code * lower down @@ -1912,12 +1904,6 @@ enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *scmd) return FAILED; } - /* - * next, check the message byte. - */ - if (msg_byte(scmd->result) != COMMAND_COMPLETE) - return FAILED; - /* * check the status byte to see if this indicates anything special. */ diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index faf7716c8851..4e66994be190 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1376,7 +1376,7 @@ sg_rq_end_io(struct request *rq, blk_status_t status) srp->header.status = 0xff & result; srp->header.masked_status = status_byte(result); - srp->header.msg_status = msg_byte(result); + srp->header.msg_status = COMMAND_COMPLETE; srp->header.host_status = host_byte(result); srp->header.driver_status = driver_byte(result); if ((sdp->sgdebug > 0) && diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index a6bb2600a2d7..bea22f71c782 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -224,7 +224,7 @@ static void scsiback_print_status(char *sense_buffer, int errors, pr_err("[%s:%d] cmnd[0]=%02x -> st=%02x msg=%02x host=%02x\n", tpg->tport->tport_name, pending_req->v2p->lun, - pending_req->cmnd[0], status_byte(errors), msg_byte(errors), + pending_req->cmnd[0], status_byte(errors), COMMAND_COMPLETE, host_byte(errors)); } diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index bd8eb6033bf4..f4fb7e7728b4 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -181,11 +181,10 @@ enum scsi_disposition { * These are set by: * * status byte = set from target device - * msg_byte = return status from host adapter itself. + * msg_byte (unused) * host_byte = set by low-level driver to indicate status. */ #define status_byte(result) (((result) >> 1) & 0x7f) -#define msg_byte(result) (((result) >> 8) & 0xff) #define host_byte(result) (((result) >> 16) & 0xff) #define sense_class(sense) (((sense) >> 4) & 0x7) diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index efcf33c29efa..779a59fe8676 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -320,11 +320,6 @@ static inline u8 get_status_byte(struct scsi_cmnd *cmd) return cmd->result & 0xff; } -static inline void set_msg_byte(struct scsi_cmnd *cmd, char status) -{ - cmd->result = (cmd->result & 0xffff00ff) | (status << 8); -} - static inline void set_host_byte(struct scsi_cmnd *cmd, char status) { cmd->result = (cmd->result & 0xff00ffff) | (status << 16); -- cgit v1.2.3 From a7479a8477e61420df43e1e8964986d90764efca Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:44 +0200 Subject: scsi: core: Kill message byte Remove last vestiges of SCSI status message bytes. Link: https://lore.kernel.org/r/20210427083046.31620-39-hare@suse.de Reviewed-by: Bart Van Assche Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- Documentation/scsi/scsi_mid_low_api.rst | 6 +++--- drivers/scsi/scsi_lib.c | 5 +---- include/trace/events/scsi.h | 33 +-------------------------------- 3 files changed, 5 insertions(+), 39 deletions(-) (limited to 'include') diff --git a/Documentation/scsi/scsi_mid_low_api.rst b/Documentation/scsi/scsi_mid_low_api.rst index b99b4e418ba9..63ddea2b9640 100644 --- a/Documentation/scsi/scsi_mid_low_api.rst +++ b/Documentation/scsi/scsi_mid_low_api.rst @@ -1172,9 +1172,9 @@ Members of interest: of 0 implies a successfully completed command (and all data (if any) has been transferred to or from the SCSI target device). 'result' is a 32 bit unsigned integer that - can be viewed as 4 related bytes. The SCSI status value is - in the LSB. See include/scsi/scsi.h status_byte(), - msg_byte() and host_byte() macros and related constants. + can be viewed as 2 related bytes. The SCSI status value is + in the LSB. See include/scsi/scsi.h status_byte() and + host_byte() macros and related constants. sense_buffer - an array (maximum size: SCSI_SENSE_BUFFERSIZE bytes) that should be written when the SCSI status (LSB of 'result') diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 75d633ffdac0..e3897bb424b4 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -591,10 +591,7 @@ static blk_status_t scsi_result_to_blk_status(struct scsi_cmnd *cmd, int result) { switch (host_byte(result)) { case DID_OK: - /* - * Also check the other bytes than the status byte in result - */ - if (scsi_status_is_good(result) && (result & ~0xff) == 0) + if (scsi_status_is_good(result)) return BLK_STS_OK; return BLK_STS_IOERR; case DID_TRANSPORT_FAILFAST: diff --git a/include/trace/events/scsi.h b/include/trace/events/scsi.h index 428cca71c2ba..370ade0d4093 100644 --- a/include/trace/events/scsi.h +++ b/include/trace/events/scsi.h @@ -124,37 +124,6 @@ scsi_hostbyte_name(DID_TRANSPORT_DISRUPTED), \ scsi_hostbyte_name(DID_TRANSPORT_FAILFAST)) -#define scsi_msgbyte_name(result) { result, #result } -#define show_msgbyte_name(val) \ - __print_symbolic(val, \ - scsi_msgbyte_name(COMMAND_COMPLETE), \ - scsi_msgbyte_name(EXTENDED_MESSAGE), \ - scsi_msgbyte_name(SAVE_POINTERS), \ - scsi_msgbyte_name(RESTORE_POINTERS), \ - scsi_msgbyte_name(DISCONNECT), \ - scsi_msgbyte_name(INITIATOR_ERROR), \ - scsi_msgbyte_name(ABORT_TASK_SET), \ - scsi_msgbyte_name(MESSAGE_REJECT), \ - scsi_msgbyte_name(NOP), \ - scsi_msgbyte_name(MSG_PARITY_ERROR), \ - scsi_msgbyte_name(LINKED_CMD_COMPLETE), \ - scsi_msgbyte_name(LINKED_FLG_CMD_COMPLETE), \ - scsi_msgbyte_name(TARGET_RESET), \ - scsi_msgbyte_name(ABORT_TASK), \ - scsi_msgbyte_name(CLEAR_TASK_SET), \ - scsi_msgbyte_name(INITIATE_RECOVERY), \ - scsi_msgbyte_name(RELEASE_RECOVERY), \ - scsi_msgbyte_name(CLEAR_ACA), \ - scsi_msgbyte_name(LOGICAL_UNIT_RESET), \ - scsi_msgbyte_name(SIMPLE_QUEUE_TAG), \ - scsi_msgbyte_name(HEAD_OF_QUEUE_TAG), \ - scsi_msgbyte_name(ORDERED_QUEUE_TAG), \ - scsi_msgbyte_name(IGNORE_WIDE_RESIDUE), \ - scsi_msgbyte_name(ACA), \ - scsi_msgbyte_name(QAS_REQUEST), \ - scsi_msgbyte_name(BUS_DEVICE_RESET), \ - scsi_msgbyte_name(ABORT)) - #define scsi_statusbyte_name(result) { result, #result } #define show_statusbyte_name(val) \ __print_symbolic(val, \ @@ -316,7 +285,7 @@ DECLARE_EVENT_CLASS(scsi_cmd_done_timeout_template, __print_hex(__get_dynamic_array(cmnd), __entry->cmd_len), "DRIVER_OK", show_hostbyte_name(((__entry->result) >> 16) & 0xff), - show_msgbyte_name(((__entry->result) >> 8) & 0xff), + "COMMAND_COMPLETE", show_statusbyte_name(__entry->result & 0xff)) ); -- cgit v1.2.3 From 3d45cefc8edd7f560e6c97a8d9928ad571f76dec Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:46 +0200 Subject: scsi: core: Drop obsolete Linux-specific SCSI status codes Originally the SCSI subsystem has been using 'special' SCSI status codes, which were the SAM-specified ones but shifted by 1. As most drivers have now been modified to use the SAM-specified ones, having two nearly identical sets of definitions only causes confusion. The Linux-specifed SCSI status codes have been marked obsolete for several years so drop them and use the SAM-specified status codes throughout. Link: https://lore.kernel.org/r/20210427083046.31620-41-hare@suse.de Reviewed-by: Bart Van Assche Reviewed-by: Douglas Gilbert Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/ata/libata-scsi.c | 2 +- drivers/infiniband/ulp/srp/ib_srp.c | 2 +- drivers/scsi/3w-9xxx.c | 2 +- drivers/scsi/3w-xxxx.c | 4 +-- drivers/scsi/53c700.c | 6 ++--- drivers/scsi/NCR5380.c | 2 +- drivers/scsi/arcmsr/arcmsr_hba.c | 4 +-- drivers/scsi/esas2r/esas2r_main.c | 2 +- drivers/scsi/megaraid.c | 4 +-- drivers/scsi/megaraid/megaraid_mbox.c | 4 +-- drivers/scsi/scsi_error.c | 48 +++++++++++++++++------------------ drivers/scsi/scsi_lib.c | 2 +- drivers/scsi/sr.c | 2 +- drivers/scsi/sr_ioctl.c | 2 +- drivers/xen/xen-scsiback.c | 2 +- include/scsi/scsi.h | 1 - include/scsi/scsi_proto.h | 22 +--------------- include/scsi/sg.h | 20 +++++++++++++++ 18 files changed, 65 insertions(+), 66 deletions(-) (limited to 'include') diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 31b47ad073ad..b9588c52815d 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -642,7 +642,7 @@ static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, if (cmd->request->rq_flags & RQF_QUIET) qc->flags |= ATA_QCFLAG_QUIET; } else { - cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); + cmd->result = (DID_OK << 16) | SAM_STAT_TASK_SET_FULL; cmd->scsi_done(cmd); } diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 31f8aa2c40ed..62d9b70f7c63 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -2232,7 +2232,7 @@ static int srp_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd) * to reduce queue depth temporarily. */ scmnd->result = len == -ENOMEM ? - DID_OK << 16 | QUEUE_FULL << 1 : DID_ERROR << 16; + DID_OK << 16 | SAM_STAT_TASK_SET_FULL : DID_ERROR << 16; goto err_iu; } diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c index 2b4b629a6e96..e41cc354cc8a 100644 --- a/drivers/scsi/3w-9xxx.c +++ b/drivers/scsi/3w-9xxx.c @@ -1338,7 +1338,7 @@ static irqreturn_t twa_interrupt(int irq, void *dev_instance) /* If error, command failed */ if (error == 1) { /* Ask for a host reset */ - cmd->result = (DID_OK << 16) | (CHECK_CONDITION << 1); + cmd->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; } /* Report residual bytes for single sgl */ diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c index 7a0b4a44395d..4ee485ab2714 100644 --- a/drivers/scsi/3w-xxxx.c +++ b/drivers/scsi/3w-xxxx.c @@ -429,7 +429,7 @@ static int tw_decode_sense(TW_Device_Extension *tw_dev, int request_id, int fill /* Additional sense code qualifier */ tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3]; - tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); + tw_dev->srb[request_id]->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; return TW_ISR_DONT_RESULT; /* Special case for isr to not over-write result */ } } @@ -2159,7 +2159,7 @@ static irqreturn_t tw_interrupt(int irq, void *dev_instance) /* If error, command failed */ if (error == 1) { /* Ask for a host reset */ - tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); + tw_dev->srb[request_id]->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; } /* Now complete the io */ diff --git a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c index 77ccb96e5ed4..1c6b4e672687 100644 --- a/drivers/scsi/53c700.c +++ b/drivers/scsi/53c700.c @@ -978,10 +978,10 @@ process_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp, if (NCR_700_get_tag_neg_state(SCp->device) == NCR_700_DURING_TAG_NEGOTIATION) NCR_700_set_tag_neg_state(SCp->device, NCR_700_FINISHED_TAG_NEGOTIATION); - + /* check for contingent allegiance conditions */ - if (hostdata->status[0] >> 1 == CHECK_CONDITION || - hostdata->status[0] >> 1 == COMMAND_TERMINATED) { + if (hostdata->status[0] == SAM_STAT_CHECK_CONDITION || + hostdata->status[0] == SAM_STAT_COMMAND_TERMINATED) { struct NCR_700_command_slot *slot = (struct NCR_700_command_slot *)SCp->host_scribble; if(slot->flags == NCR_700_FLAG_AUTOSENSE) { diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index a74674941e7d..8aa964cd54df 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -538,7 +538,7 @@ static void complete_cmd(struct Scsi_Host *instance, if (hostdata->sensing == cmd) { /* Autosense processing ends here */ - if (status_byte(cmd->result) != GOOD) { + if (get_status_byte(cmd) != SAM_STAT_GOOD) { scsi_eh_restore_cmnd(cmd, &hostdata->ses); } else { scsi_eh_restore_cmnd(cmd, &hostdata->ses); diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c index c01a5b2ff67a..e5149c9fd4e6 100644 --- a/drivers/scsi/arcmsr/arcmsr_hba.c +++ b/drivers/scsi/arcmsr/arcmsr_hba.c @@ -1326,7 +1326,7 @@ static void arcmsr_report_sense_info(struct CommandControlBlock *ccb) struct scsi_cmnd *pcmd = ccb->pcmd; struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer; - pcmd->result = (DID_OK << 16) | (CHECK_CONDITION << 1); + pcmd->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; if (sensebuffer) { int sense_data_length = sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE @@ -3253,7 +3253,7 @@ static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd, if (!ccb) return SCSI_MLQUEUE_HOST_BUSY; if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) { - cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1); + cmd->result = (DID_ERROR << 16) | SAM_STAT_RESERVATION_CONFLICT; cmd->scsi_done(cmd); return 0; } diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c index 45ec9f16c085..647f82898b6e 100644 --- a/drivers/scsi/esas2r/esas2r_main.c +++ b/drivers/scsi/esas2r/esas2r_main.c @@ -1525,7 +1525,7 @@ void esas2r_complete_request_cb(struct esas2r_adapter *a, rq->cmd->result = ((esas2r_req_status_to_error(rq->req_stat) << 16) - | (rq->func_rsp.scsi_rsp.scsi_stat & STATUS_MASK)); + | rq->func_rsp.scsi_rsp.scsi_stat); if (rq->req_stat == RS_UNDERRUN) scsi_set_resid(rq->cmd, diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c index 1880471c632a..56910e94dbf2 100644 --- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -1611,7 +1611,7 @@ mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) */ if( cmd->cmnd[0] == TEST_UNIT_READY ) { cmd->result |= (DID_ERROR << 16) | - (RESERVATION_CONFLICT << 1); + SAM_STAT_RESERVATION_CONFLICT; } else /* @@ -1623,7 +1623,7 @@ mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) cmd->cmnd[0] == RELEASE) ) { cmd->result |= (DID_ERROR << 16) | - (RESERVATION_CONFLICT << 1); + SAM_STAT_RESERVATION_CONFLICT; } else #endif diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c index bb8b2fba4b3d..d3fac99db786 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.c +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -2327,7 +2327,7 @@ megaraid_mbox_dpc(unsigned long devp) */ if (scp->cmnd[0] == TEST_UNIT_READY) { scp->result = DID_ERROR << 16 | - RESERVATION_CONFLICT << 1; + SAM_STAT_RESERVATION_CONFLICT; } else /* @@ -2338,7 +2338,7 @@ megaraid_mbox_dpc(unsigned long devp) scp->cmnd[0] == RELEASE)) { scp->result = DID_ERROR << 16 | - RESERVATION_CONFLICT << 1; + SAM_STAT_RESERVATION_CONFLICT; } else { scp->result = DID_BAD_TARGET << 16 | status; diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 3e6e456816fc..c6cd5a8e5c85 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -745,32 +745,32 @@ static enum scsi_disposition scsi_eh_completed_normally(struct scsi_cmnd *scmd) * now, check the status byte to see if this indicates * anything special. */ - switch (status_byte(scmd->result)) { - case GOOD: + switch (get_status_byte(scmd)) { + case SAM_STAT_GOOD: scsi_handle_queue_ramp_up(scmd->device); fallthrough; - case COMMAND_TERMINATED: + case SAM_STAT_COMMAND_TERMINATED: return SUCCESS; - case CHECK_CONDITION: + case SAM_STAT_CHECK_CONDITION: return scsi_check_sense(scmd); - case CONDITION_GOOD: - case INTERMEDIATE_GOOD: - case INTERMEDIATE_C_GOOD: + case SAM_STAT_CONDITION_MET: + case SAM_STAT_INTERMEDIATE: + case SAM_STAT_INTERMEDIATE_CONDITION_MET: /* * who knows? FIXME(eric) */ return SUCCESS; - case RESERVATION_CONFLICT: + case SAM_STAT_RESERVATION_CONFLICT: if (scmd->cmnd[0] == TEST_UNIT_READY) /* it is a success, we probed the device and * found it */ return SUCCESS; /* otherwise, we failed to send the command */ return FAILED; - case QUEUE_FULL: + case SAM_STAT_TASK_SET_FULL: scsi_handle_queue_full(scmd->device); fallthrough; - case BUSY: + case SAM_STAT_BUSY: return NEEDS_RETRY; default: return FAILED; @@ -1760,7 +1760,7 @@ int scsi_noretry_cmd(struct scsi_cmnd *scmd) case DID_PARITY: return (scmd->request->cmd_flags & REQ_FAILFAST_DEV); case DID_ERROR: - if (status_byte(scmd->result) == RESERVATION_CONFLICT) + if (get_status_byte(scmd) == SAM_STAT_RESERVATION_CONFLICT) return 0; fallthrough; case DID_SOFT_ERROR: @@ -1876,7 +1876,7 @@ enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *scmd) */ return SUCCESS; case DID_ERROR: - if (status_byte(scmd->result) == RESERVATION_CONFLICT) + if (get_status_byte(scmd) == SAM_STAT_RESERVATION_CONFLICT) /* * execute reservation conflict processing code * lower down @@ -1907,15 +1907,15 @@ enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *scmd) /* * check the status byte to see if this indicates anything special. */ - switch (status_byte(scmd->result)) { - case QUEUE_FULL: + switch (get_status_byte(scmd)) { + case SAM_STAT_TASK_SET_FULL: scsi_handle_queue_full(scmd->device); /* * the case of trying to send too many commands to a * tagged queueing device. */ fallthrough; - case BUSY: + case SAM_STAT_BUSY: /* * device can't talk to us at the moment. Should only * occur (SAM-3) when the task queue is empty, so will cause @@ -1923,16 +1923,16 @@ enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *scmd) * device. */ return ADD_TO_MLQUEUE; - case GOOD: + case SAM_STAT_GOOD: if (scmd->cmnd[0] == REPORT_LUNS) scmd->device->sdev_target->expecting_lun_change = 0; scsi_handle_queue_ramp_up(scmd->device); fallthrough; - case COMMAND_TERMINATED: + case SAM_STAT_COMMAND_TERMINATED: return SUCCESS; - case TASK_ABORTED: + case SAM_STAT_TASK_ABORTED: goto maybe_retry; - case CHECK_CONDITION: + case SAM_STAT_CHECK_CONDITION: rtn = scsi_check_sense(scmd); if (rtn == NEEDS_RETRY) goto maybe_retry; @@ -1941,16 +1941,16 @@ enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *scmd) * to collect the sense and redo the decide * disposition */ return rtn; - case CONDITION_GOOD: - case INTERMEDIATE_GOOD: - case INTERMEDIATE_C_GOOD: - case ACA_ACTIVE: + case SAM_STAT_CONDITION_MET: + case SAM_STAT_INTERMEDIATE: + case SAM_STAT_INTERMEDIATE_CONDITION_MET: + case SAM_STAT_ACA_ACTIVE: /* * who knows? FIXME(eric) */ return SUCCESS; - case RESERVATION_CONFLICT: + case SAM_STAT_RESERVATION_CONFLICT: sdev_printk(KERN_INFO, scmd->device, "reservation conflict\n"); set_host_byte(scmd, DID_NEXUS_FAILURE); diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index e3897bb424b4..6b994baf87c2 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -873,7 +873,7 @@ static int scsi_io_completion_nz_result(struct scsi_cmnd *cmd, int result, * if it can't fit). Treat SAM_STAT_CONDITION_MET and the related * intermediate statuses (both obsolete in SAM-4) as good. */ - if (status_byte(result) && scsi_status_is_good(result)) { + if ((result & 0xff) && scsi_status_is_good(result)) { result = 0; *blk_statp = BLK_STS_OK; } diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index e9cb874f6891..482a07b662a9 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -338,7 +338,7 @@ static int sr_done(struct scsi_cmnd *SCpnt) * care is taken to avoid unnecessary additional work such as * memcpy's that could be avoided. */ - if (status_byte(result) == SAM_STAT_CHECK_CONDITION && + if (scsi_status_is_check_condition(result) && (SCpnt->sense_buffer[0] & 0x7f) == 0x70) { /* Sense current */ switch (SCpnt->sense_buffer[2]) { case MEDIUM_ERROR: diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c index 93c77dd9a476..79d9aa2df528 100644 --- a/drivers/scsi/sr_ioctl.c +++ b/drivers/scsi/sr_ioctl.c @@ -205,7 +205,7 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc) err = result; goto out; } - if (status_byte(result) == SAM_STAT_CHECK_CONDITION) { + if (scsi_status_is_check_condition(result)) { switch (sshdr->sense_key) { case UNIT_ATTENTION: SDev->changed = 1; diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index bea22f71c782..61ce0d142eea 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -224,7 +224,7 @@ static void scsiback_print_status(char *sense_buffer, int errors, pr_err("[%s:%d] cmnd[0]=%02x -> st=%02x msg=%02x host=%02x\n", tpg->tport->tport_name, pending_req->v2p->lun, - pending_req->cmnd[0], status_byte(errors), COMMAND_COMPLETE, + pending_req->cmnd[0], errors & 0xff, COMMAND_COMPLETE, host_byte(errors)); } diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index f4fb7e7728b4..358f969f368f 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -184,7 +184,6 @@ enum scsi_disposition { * msg_byte (unused) * host_byte = set by low-level driver to indicate status. */ -#define status_byte(result) (((result) >> 1) & 0x7f) #define host_byte(result) (((result) >> 16) & 0xff) #define sense_class(sense) (((sense) >> 4) & 0x7) diff --git a/include/scsi/scsi_proto.h b/include/scsi/scsi_proto.h index 5c106c4f249e..cb218a576bcf 100644 --- a/include/scsi/scsi_proto.h +++ b/include/scsi/scsi_proto.h @@ -202,27 +202,7 @@ struct scsi_varlen_cdb_hdr { #define SAM_STAT_ACA_ACTIVE 0x30 #define SAM_STAT_TASK_ABORTED 0x40 -/* - * Status codes. These are deprecated as they are shifted 1 bit right - * from those found in the SCSI standards. This causes confusion for - * applications that are ported to several OSes. Prefer SAM Status codes - * above. - */ - -#define GOOD 0x00 -#define CHECK_CONDITION 0x01 -#define CONDITION_GOOD 0x02 -#define BUSY 0x04 -#define INTERMEDIATE_GOOD 0x08 -#define INTERMEDIATE_C_GOOD 0x0a -#define RESERVATION_CONFLICT 0x0c -#define COMMAND_TERMINATED 0x11 -#define QUEUE_FULL 0x14 -#define ACA_ACTIVE 0x18 -#define TASK_ABORTED 0x20 - -#define STATUS_MASK 0xfe - +#define STATUS_MASK 0xfe /* * SENSE KEYS */ diff --git a/include/scsi/sg.h b/include/scsi/sg.h index e9dd5477ca7a..843cefb8efce 100644 --- a/include/scsi/sg.h +++ b/include/scsi/sg.h @@ -145,6 +145,26 @@ struct compat_sg_io_hdr { /* Obsolete driver_byte() declaration */ #define driver_byte(result) (((result) >> 24) & 0xff) +/* + * Original linux SCSI Status codes. They are shifted 1 bit right + * from those found in the SCSI standards. + */ + +#define GOOD 0x00 +#define CHECK_CONDITION 0x01 +#define CONDITION_GOOD 0x02 +#define BUSY 0x04 +#define INTERMEDIATE_GOOD 0x08 +#define INTERMEDIATE_C_GOOD 0x0a +#define RESERVATION_CONFLICT 0x0c +#define COMMAND_TERMINATED 0x11 +#define QUEUE_FULL 0x14 +#define ACA_ACTIVE 0x18 +#define TASK_ABORTED 0x20 + +/* Obsolete status_byte() declaration */ +#define status_byte(result) (((result) >> 1) & 0x7f) + typedef struct sg_scsi_id { /* used by SG_GET_SCSI_ID ioctl() */ int host_no; /* as in "scsi" where 'n' is one of 0, 1, 2 etc */ int channel; -- cgit v1.2.3 From 1486a4f5c2f35da5743b56037b8bbfb4eb38fa61 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Tue, 25 May 2021 13:17:54 -0500 Subject: scsi: iscsi: Add task completion helper This adds a helper to detect if a cmd has completed but is not yet freed. Link: https://lore.kernel.org/r/20210525181821.7617-2-michael.christie@oracle.com Reviewed-by: Lee Duncan Signed-off-by: Mike Christie Signed-off-by: Martin K. Petersen --- include/scsi/libiscsi.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include') diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 02f966e9358f..8c6d358a8abc 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -145,6 +145,13 @@ static inline void* iscsi_next_hdr(struct iscsi_task *task) return (void*)task->hdr + task->hdr_len; } +static inline bool iscsi_task_is_completed(struct iscsi_task *task) +{ + return task->state == ISCSI_TASK_COMPLETED || + task->state == ISCSI_TASK_ABRT_TMF || + task->state == ISCSI_TASK_ABRT_SESS_RECOV; +} + /* Connection's states */ enum { ISCSI_CONN_INITIAL_STAGE, -- cgit v1.2.3 From 891e2639deae721dc43764a44fa255890dc34313 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Tue, 25 May 2021 13:17:55 -0500 Subject: scsi: iscsi: Stop queueing during ep_disconnect During ep_disconnect we have been doing iscsi_suspend_tx/queue to block new I/O but every driver except cxgbi and iscsi_tcp can still get I/O from __iscsi_conn_send_pdu() if we haven't called iscsi_conn_failure() before ep_disconnect. This could happen if we were terminating the session, and the logout timed out before it was even sent to libiscsi. Fix the issue by adding a helper which reverses the bind_conn call that allows new I/O to be queued. Drivers implementing ep_disconnect can use this to make sure new I/O is not queued to them when handling the disconnect. Link: https://lore.kernel.org/r/20210525181821.7617-3-michael.christie@oracle.com Reviewed-by: Lee Duncan Signed-off-by: Mike Christie Signed-off-by: Martin K. Petersen --- drivers/infiniband/ulp/iser/iscsi_iser.c | 1 + drivers/scsi/be2iscsi/be_main.c | 1 + drivers/scsi/bnx2i/bnx2i_iscsi.c | 1 + drivers/scsi/cxgbi/cxgb3i/cxgb3i.c | 1 + drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 1 + drivers/scsi/libiscsi.c | 70 ++++++++++++++++++++++++++++---- drivers/scsi/qedi/qedi_iscsi.c | 1 + drivers/scsi/qla4xxx/ql4_os.c | 1 + drivers/scsi/scsi_transport_iscsi.c | 10 +++-- include/scsi/libiscsi.h | 1 + include/scsi/scsi_transport_iscsi.h | 1 + 11 files changed, 78 insertions(+), 11 deletions(-) (limited to 'include') diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index 8fcaa1136f2c..6baebcb6d14d 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -1002,6 +1002,7 @@ static struct iscsi_transport iscsi_iser_transport = { /* connection management */ .create_conn = iscsi_iser_conn_create, .bind_conn = iscsi_iser_conn_bind, + .unbind_conn = iscsi_conn_unbind, .destroy_conn = iscsi_conn_teardown, .attr_is_visible = iser_attr_is_visible, .set_param = iscsi_iser_set_param, diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index c15cc6c164d9..58f81a79088f 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -5807,6 +5807,7 @@ struct iscsi_transport beiscsi_iscsi_transport = { .destroy_session = beiscsi_session_destroy, .create_conn = beiscsi_conn_create, .bind_conn = beiscsi_conn_bind, + .unbind_conn = iscsi_conn_unbind, .destroy_conn = iscsi_conn_teardown, .attr_is_visible = beiscsi_attr_is_visible, .set_iface_param = beiscsi_iface_set_param, diff --git a/drivers/scsi/bnx2i/bnx2i_iscsi.c b/drivers/scsi/bnx2i/bnx2i_iscsi.c index 1e6d8f62ea3c..b6c1da46d582 100644 --- a/drivers/scsi/bnx2i/bnx2i_iscsi.c +++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c @@ -2276,6 +2276,7 @@ struct iscsi_transport bnx2i_iscsi_transport = { .destroy_session = bnx2i_session_destroy, .create_conn = bnx2i_conn_create, .bind_conn = bnx2i_conn_bind, + .unbind_conn = iscsi_conn_unbind, .destroy_conn = bnx2i_conn_destroy, .attr_is_visible = bnx2i_attr_is_visible, .set_param = iscsi_set_param, diff --git a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c index 203f938fca7e..f949a4e00783 100644 --- a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c +++ b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c @@ -117,6 +117,7 @@ static struct iscsi_transport cxgb3i_iscsi_transport = { /* connection management */ .create_conn = cxgbi_create_conn, .bind_conn = cxgbi_bind_conn, + .unbind_conn = iscsi_conn_unbind, .destroy_conn = iscsi_tcp_conn_teardown, .start_conn = iscsi_conn_start, .stop_conn = iscsi_conn_stop, diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c index 2c3491528d42..efb3e2b3398e 100644 --- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c +++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c @@ -134,6 +134,7 @@ static struct iscsi_transport cxgb4i_iscsi_transport = { /* connection management */ .create_conn = cxgbi_create_conn, .bind_conn = cxgbi_bind_conn, + .unbind_conn = iscsi_conn_unbind, .destroy_conn = iscsi_tcp_conn_teardown, .start_conn = iscsi_conn_start, .stop_conn = iscsi_conn_stop, diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 4834219497ee..2aaf83678654 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -1387,23 +1387,32 @@ void iscsi_session_failure(struct iscsi_session *session, } EXPORT_SYMBOL_GPL(iscsi_session_failure); -void iscsi_conn_failure(struct iscsi_conn *conn, enum iscsi_err err) +static bool iscsi_set_conn_failed(struct iscsi_conn *conn) { struct iscsi_session *session = conn->session; - spin_lock_bh(&session->frwd_lock); - if (session->state == ISCSI_STATE_FAILED) { - spin_unlock_bh(&session->frwd_lock); - return; - } + if (session->state == ISCSI_STATE_FAILED) + return false; if (conn->stop_stage == 0) session->state = ISCSI_STATE_FAILED; - spin_unlock_bh(&session->frwd_lock); set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx); set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx); - iscsi_conn_error_event(conn->cls_conn, err); + return true; +} + +void iscsi_conn_failure(struct iscsi_conn *conn, enum iscsi_err err) +{ + struct iscsi_session *session = conn->session; + bool needs_evt; + + spin_lock_bh(&session->frwd_lock); + needs_evt = iscsi_set_conn_failed(conn); + spin_unlock_bh(&session->frwd_lock); + + if (needs_evt) + iscsi_conn_error_event(conn->cls_conn, err); } EXPORT_SYMBOL_GPL(iscsi_conn_failure); @@ -2180,6 +2189,51 @@ done: spin_unlock(&session->frwd_lock); } +/** + * iscsi_conn_unbind - prevent queueing to conn. + * @cls_conn: iscsi conn ep is bound to. + * @is_active: is the conn in use for boot or is this for EH/termination + * + * This must be called by drivers implementing the ep_disconnect callout. + * It disables queueing to the connection from libiscsi in preparation for + * an ep_disconnect call. + */ +void iscsi_conn_unbind(struct iscsi_cls_conn *cls_conn, bool is_active) +{ + struct iscsi_session *session; + struct iscsi_conn *conn; + + if (!cls_conn) + return; + + conn = cls_conn->dd_data; + session = conn->session; + /* + * Wait for iscsi_eh calls to exit. We don't wait for the tmf to + * complete or timeout. The caller just wants to know what's running + * is everything that needs to be cleaned up, and no cmds will be + * queued. + */ + mutex_lock(&session->eh_mutex); + + iscsi_suspend_queue(conn); + iscsi_suspend_tx(conn); + + spin_lock_bh(&session->frwd_lock); + if (!is_active) { + /* + * if logout timed out before userspace could even send a PDU + * the state might still be in ISCSI_STATE_LOGGED_IN and + * allowing new cmds and TMFs. + */ + if (session->state == ISCSI_STATE_LOGGED_IN) + iscsi_set_conn_failed(conn); + } + spin_unlock_bh(&session->frwd_lock); + mutex_unlock(&session->eh_mutex); +} +EXPORT_SYMBOL_GPL(iscsi_conn_unbind); + static void iscsi_prep_abort_task_pdu(struct iscsi_task *task, struct iscsi_tm *hdr) { diff --git a/drivers/scsi/qedi/qedi_iscsi.c b/drivers/scsi/qedi/qedi_iscsi.c index 08c05403cd72..ef16537c523c 100644 --- a/drivers/scsi/qedi/qedi_iscsi.c +++ b/drivers/scsi/qedi/qedi_iscsi.c @@ -1401,6 +1401,7 @@ struct iscsi_transport qedi_iscsi_transport = { .destroy_session = qedi_session_destroy, .create_conn = qedi_conn_create, .bind_conn = qedi_conn_bind, + .unbind_conn = iscsi_conn_unbind, .start_conn = qedi_conn_start, .stop_conn = iscsi_conn_stop, .destroy_conn = qedi_conn_destroy, diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index ad3afe30f617..74d0d1bc208d 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -259,6 +259,7 @@ static struct iscsi_transport qla4xxx_iscsi_transport = { .start_conn = qla4xxx_conn_start, .create_conn = qla4xxx_conn_create, .bind_conn = qla4xxx_conn_bind, + .unbind_conn = iscsi_conn_unbind, .stop_conn = iscsi_conn_stop, .destroy_conn = qla4xxx_conn_destroy, .set_param = iscsi_set_param, diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index 441f0152193f..82491343e94a 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -2964,7 +2964,7 @@ release_host: } static int iscsi_if_ep_disconnect(struct iscsi_transport *transport, - u64 ep_handle) + u64 ep_handle, bool is_active) { struct iscsi_cls_conn *conn; struct iscsi_endpoint *ep; @@ -2981,6 +2981,8 @@ static int iscsi_if_ep_disconnect(struct iscsi_transport *transport, conn->ep = NULL; mutex_unlock(&conn->ep_mutex); conn->state = ISCSI_CONN_FAILED; + + transport->unbind_conn(conn, is_active); } transport->ep_disconnect(ep); @@ -3012,7 +3014,8 @@ iscsi_if_transport_ep(struct iscsi_transport *transport, break; case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: rc = iscsi_if_ep_disconnect(transport, - ev->u.ep_disconnect.ep_handle); + ev->u.ep_disconnect.ep_handle, + false); break; } return rc; @@ -3737,7 +3740,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) conn = iscsi_conn_lookup(ev->u.b_conn.sid, ev->u.b_conn.cid); if (conn && conn->ep) - iscsi_if_ep_disconnect(transport, conn->ep->id); + iscsi_if_ep_disconnect(transport, conn->ep->id, true); if (!session || !conn) { err = -EINVAL; @@ -4656,6 +4659,7 @@ iscsi_register_transport(struct iscsi_transport *tt) int err; BUG_ON(!tt); + WARN_ON(tt->ep_disconnect && !tt->unbind_conn); priv = iscsi_if_transport_lookup(tt); if (priv) diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 8c6d358a8abc..13d413a0b8b6 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -431,6 +431,7 @@ extern int iscsi_conn_start(struct iscsi_cls_conn *); extern void iscsi_conn_stop(struct iscsi_cls_conn *, int); extern int iscsi_conn_bind(struct iscsi_cls_session *, struct iscsi_cls_conn *, int); +extern void iscsi_conn_unbind(struct iscsi_cls_conn *cls_conn, bool is_active); extern void iscsi_conn_failure(struct iscsi_conn *conn, enum iscsi_err err); extern void iscsi_session_failure(struct iscsi_session *session, enum iscsi_err err); diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h index fc5a39839b4b..8874016b3c9a 100644 --- a/include/scsi/scsi_transport_iscsi.h +++ b/include/scsi/scsi_transport_iscsi.h @@ -82,6 +82,7 @@ struct iscsi_transport { void (*destroy_session) (struct iscsi_cls_session *session); struct iscsi_cls_conn *(*create_conn) (struct iscsi_cls_session *sess, uint32_t cid); + void (*unbind_conn) (struct iscsi_cls_conn *conn, bool is_active); int (*bind_conn) (struct iscsi_cls_session *session, struct iscsi_cls_conn *cls_conn, uint64_t transport_eph, int is_leading); -- cgit v1.2.3 From 9e5fe1700896c85040943fdc0d3fee0dd3e0d36f Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Tue, 25 May 2021 13:17:59 -0500 Subject: scsi: iscsi: Rel ref after iscsi_lookup_endpoint() Subsequent commits allow the kernel to do ep_disconnect. In that case we will have to get a proper refcount on the ep so one thread does not delete it from under another. Link: https://lore.kernel.org/r/20210525181821.7617-7-michael.christie@oracle.com Reviewed-by: Lee Duncan Signed-off-by: Mike Christie Signed-off-by: Martin K. Petersen --- drivers/infiniband/ulp/iser/iscsi_iser.c | 1 + drivers/scsi/be2iscsi/be_iscsi.c | 19 +++++++++++++------ drivers/scsi/bnx2i/bnx2i_iscsi.c | 23 ++++++++++++++++------- drivers/scsi/cxgbi/libcxgbi.c | 12 ++++++++---- drivers/scsi/qedi/qedi_iscsi.c | 25 ++++++++++++++++++------- drivers/scsi/qla4xxx/ql4_os.c | 1 + drivers/scsi/scsi_transport_iscsi.c | 25 +++++++++++++++++-------- include/scsi/scsi_transport_iscsi.h | 1 + 8 files changed, 75 insertions(+), 32 deletions(-) (limited to 'include') diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index 6baebcb6d14d..776e46ee95da 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -506,6 +506,7 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session, iser_conn->iscsi_conn = conn; out: + iscsi_put_endpoint(ep); mutex_unlock(&iser_conn->state_mutex); return error; } diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c index 51a7b19bfffe..8aeaddc93b16 100644 --- a/drivers/scsi/be2iscsi/be_iscsi.c +++ b/drivers/scsi/be2iscsi/be_iscsi.c @@ -182,6 +182,7 @@ int beiscsi_conn_bind(struct iscsi_cls_session *cls_session, struct beiscsi_endpoint *beiscsi_ep; struct iscsi_endpoint *ep; uint16_t cri_index; + int rc = 0; ep = iscsi_lookup_endpoint(transport_fd); if (!ep) @@ -189,15 +190,17 @@ int beiscsi_conn_bind(struct iscsi_cls_session *cls_session, beiscsi_ep = ep->dd_data; - if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) - return -EINVAL; + if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) { + rc = -EINVAL; + goto put_ep; + } if (beiscsi_ep->phba != phba) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n", beiscsi_ep->phba, phba); - - return -EEXIST; + rc = -EEXIST; + goto put_ep; } cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid); if (phba->conn_table[cri_index]) { @@ -209,7 +212,8 @@ int beiscsi_conn_bind(struct iscsi_cls_session *cls_session, beiscsi_ep->ep_cid, beiscsi_conn, phba->conn_table[cri_index]); - return -EINVAL; + rc = -EINVAL; + goto put_ep; } } @@ -226,7 +230,10 @@ int beiscsi_conn_bind(struct iscsi_cls_session *cls_session, "BS_%d : cid %d phba->conn_table[%u]=%p\n", beiscsi_ep->ep_cid, cri_index, beiscsi_conn); phba->conn_table[cri_index] = beiscsi_conn; - return 0; + +put_ep: + iscsi_put_endpoint(ep); + return rc; } static int beiscsi_iface_create_ipv4(struct beiscsi_hba *phba) diff --git a/drivers/scsi/bnx2i/bnx2i_iscsi.c b/drivers/scsi/bnx2i/bnx2i_iscsi.c index 9a4f4776a78a..26cb1c6536ce 100644 --- a/drivers/scsi/bnx2i/bnx2i_iscsi.c +++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c @@ -1420,17 +1420,23 @@ static int bnx2i_conn_bind(struct iscsi_cls_session *cls_session, * Forcefully terminate all in progress connection recovery at the * earliest, either in bind(), send_pdu(LOGIN), or conn_start() */ - if (bnx2i_adapter_ready(hba)) - return -EIO; + if (bnx2i_adapter_ready(hba)) { + ret_code = -EIO; + goto put_ep; + } bnx2i_ep = ep->dd_data; if ((bnx2i_ep->state == EP_STATE_TCP_FIN_RCVD) || - (bnx2i_ep->state == EP_STATE_TCP_RST_RCVD)) + (bnx2i_ep->state == EP_STATE_TCP_RST_RCVD)) { /* Peer disconnect via' FIN or RST */ - return -EINVAL; + ret_code = -EINVAL; + goto put_ep; + } - if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) - return -EINVAL; + if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) { + ret_code = -EINVAL; + goto put_ep; + } if (bnx2i_ep->hba != hba) { /* Error - TCP connection does not belong to this device @@ -1441,7 +1447,8 @@ static int bnx2i_conn_bind(struct iscsi_cls_session *cls_session, iscsi_conn_printk(KERN_ALERT, cls_conn->dd_data, "belong to hba (%s)\n", hba->netdev->name); - return -EEXIST; + ret_code = -EEXIST; + goto put_ep; } bnx2i_ep->conn = bnx2i_conn; bnx2i_conn->ep = bnx2i_ep; @@ -1458,6 +1465,8 @@ static int bnx2i_conn_bind(struct iscsi_cls_session *cls_session, bnx2i_put_rq_buf(bnx2i_conn, 0); bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE); +put_ep: + iscsi_put_endpoint(ep); return ret_code; } diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c index 215dd0eb3f48..dbe22a7136f3 100644 --- a/drivers/scsi/cxgbi/libcxgbi.c +++ b/drivers/scsi/cxgbi/libcxgbi.c @@ -2690,11 +2690,13 @@ int cxgbi_bind_conn(struct iscsi_cls_session *cls_session, err = csk->cdev->csk_ddp_setup_pgidx(csk, csk->tid, ppm->tformat.pgsz_idx_dflt); if (err < 0) - return err; + goto put_ep; err = iscsi_conn_bind(cls_session, cls_conn, is_leading); - if (err) - return -EINVAL; + if (err) { + err = -EINVAL; + goto put_ep; + } /* calculate the tag idx bits needed for this conn based on cmds_max */ cconn->task_idx_bits = (__ilog2_u32(conn->session->cmds_max - 1)) + 1; @@ -2715,7 +2717,9 @@ int cxgbi_bind_conn(struct iscsi_cls_session *cls_session, /* init recv engine */ iscsi_tcp_hdr_recv_prep(tcp_conn); - return 0; +put_ep: + iscsi_put_endpoint(ep); + return err; } EXPORT_SYMBOL_GPL(cxgbi_bind_conn); diff --git a/drivers/scsi/qedi/qedi_iscsi.c b/drivers/scsi/qedi/qedi_iscsi.c index 30dc345b011c..80f8d35b5900 100644 --- a/drivers/scsi/qedi/qedi_iscsi.c +++ b/drivers/scsi/qedi/qedi_iscsi.c @@ -377,6 +377,7 @@ static int qedi_conn_bind(struct iscsi_cls_session *cls_session, struct qedi_ctx *qedi = iscsi_host_priv(shost); struct qedi_endpoint *qedi_ep; struct iscsi_endpoint *ep; + int rc = 0; ep = iscsi_lookup_endpoint(transport_fd); if (!ep) @@ -384,11 +385,16 @@ static int qedi_conn_bind(struct iscsi_cls_session *cls_session, qedi_ep = ep->dd_data; if ((qedi_ep->state == EP_STATE_TCP_FIN_RCVD) || - (qedi_ep->state == EP_STATE_TCP_RST_RCVD)) - return -EINVAL; + (qedi_ep->state == EP_STATE_TCP_RST_RCVD)) { + rc = -EINVAL; + goto put_ep; + } + + if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) { + rc = -EINVAL; + goto put_ep; + } - if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) - return -EINVAL; qedi_ep->conn = qedi_conn; qedi_conn->ep = qedi_ep; @@ -398,13 +404,18 @@ static int qedi_conn_bind(struct iscsi_cls_session *cls_session, qedi_conn->cmd_cleanup_req = 0; qedi_conn->cmd_cleanup_cmpl = 0; - if (qedi_bind_conn_to_iscsi_cid(qedi, qedi_conn)) - return -EINVAL; + if (qedi_bind_conn_to_iscsi_cid(qedi, qedi_conn)) { + rc = -EINVAL; + goto put_ep; + } + spin_lock_init(&qedi_conn->tmf_work_lock); INIT_LIST_HEAD(&qedi_conn->tmf_work_list); init_waitqueue_head(&qedi_conn->wait_queue); - return 0; +put_ep: + iscsi_put_endpoint(ep); + return rc; } static int qedi_iscsi_update_conn(struct qedi_ctx *qedi, diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index 74d0d1bc208d..0e7a7e82e028 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -3235,6 +3235,7 @@ static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session, conn = cls_conn->dd_data; qla_conn = conn->dd_data; qla_conn->qla_ep = ep->dd_data; + iscsi_put_endpoint(ep); return 0; } diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index 2eb77f69fe0c..bab6654d8ee9 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -266,9 +266,20 @@ void iscsi_destroy_endpoint(struct iscsi_endpoint *ep) } EXPORT_SYMBOL_GPL(iscsi_destroy_endpoint); +void iscsi_put_endpoint(struct iscsi_endpoint *ep) +{ + put_device(&ep->dev); +} +EXPORT_SYMBOL_GPL(iscsi_put_endpoint); + +/** + * iscsi_lookup_endpoint - get ep from handle + * @handle: endpoint handle + * + * Caller must do a iscsi_put_endpoint. + */ struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle) { - struct iscsi_endpoint *ep; struct device *dev; dev = class_find_device(&iscsi_endpoint_class, NULL, &handle, @@ -276,13 +287,7 @@ struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle) if (!dev) return NULL; - ep = iscsi_dev_to_endpoint(dev); - /* - * we can drop this now because the interface will prevent - * removals and lookups from racing. - */ - put_device(dev); - return ep; + return iscsi_dev_to_endpoint(dev); } EXPORT_SYMBOL_GPL(iscsi_lookup_endpoint); @@ -2990,6 +2995,7 @@ static int iscsi_if_ep_disconnect(struct iscsi_transport *transport, } transport->ep_disconnect(ep); + iscsi_put_endpoint(ep); return 0; } @@ -3015,6 +3021,7 @@ iscsi_if_transport_ep(struct iscsi_transport *transport, ev->r.retcode = transport->ep_poll(ep, ev->u.ep_poll.timeout_ms); + iscsi_put_endpoint(ep); break; case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: rc = iscsi_if_ep_disconnect(transport, @@ -3698,6 +3705,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) ev->u.c_bound_session.initial_cmdsn, ev->u.c_bound_session.cmds_max, ev->u.c_bound_session.queue_depth); + iscsi_put_endpoint(ep); break; case ISCSI_UEVENT_DESTROY_SESSION: session = iscsi_session_lookup(ev->u.d_session.sid); @@ -3769,6 +3777,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) mutex_lock(&conn->ep_mutex); conn->ep = ep; mutex_unlock(&conn->ep_mutex); + iscsi_put_endpoint(ep); } else iscsi_cls_conn_printk(KERN_ERR, conn, "Could not set ep conn " diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h index 8874016b3c9a..d36a72cf049f 100644 --- a/include/scsi/scsi_transport_iscsi.h +++ b/include/scsi/scsi_transport_iscsi.h @@ -442,6 +442,7 @@ extern int iscsi_scan_finished(struct Scsi_Host *shost, unsigned long time); extern struct iscsi_endpoint *iscsi_create_endpoint(int dd_size); extern void iscsi_destroy_endpoint(struct iscsi_endpoint *ep); extern struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle); +extern void iscsi_put_endpoint(struct iscsi_endpoint *ep); extern int iscsi_block_scsi_eh(struct scsi_cmnd *cmd); extern struct iscsi_iface *iscsi_create_iface(struct Scsi_Host *shost, struct iscsi_transport *t, -- cgit v1.2.3 From 23d6fefbb3f6b1cc29794427588b470ed06ff64e Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Tue, 25 May 2021 13:18:00 -0500 Subject: scsi: iscsi: Fix in-kernel conn failure handling Commit 0ab710458da1 ("scsi: iscsi: Perform connection failure entirely in kernel space") has the following regressions/bugs that this patch fixes: 1. It can return cmds to upper layers like dm-multipath where that can retry them. After they are successful the fs/app can send new I/O to the same sectors, but we've left the cmds running in FW or in the net layer. We need to be calling ep_disconnect if userspace is not up. This patch only fixes the issue for offload drivers. iscsi_tcp will be fixed in separate commit because it doesn't have a ep_disconnect call. 2. The drivers that implement ep_disconnect expect that it's called before conn_stop. Besides crashes, if the cleanup_task callout is called before ep_disconnect it might free up driver/card resources for session1 then they could be allocated for session2. But because the driver's ep_disconnect is not called it has not cleaned up the firmware so the card is still using the resources for the original cmd. 3. The stop_conn_work_fn can run after userspace has done its recovery and we are happily using the session. We will then end up with various bugs depending on what is going on at the time. We may also run stop_conn_work_fn late after userspace has called stop_conn and ep_disconnect and is now going to call start/bind conn. If stop_conn_work_fn runs after bind but before start, we would leave the conn in a unbound but sort of started state where IO might be allowed even though the drivers have been set in a state where they no longer expect I/O. 4. Returning -EAGAIN in iscsi_if_destroy_conn if we haven't yet run the in kernel stop_conn function is breaking userspace. We should have been doing this for the caller. Link: https://lore.kernel.org/r/20210525181821.7617-8-michael.christie@oracle.com Fixes: 0ab710458da1 ("scsi: iscsi: Perform connection failure entirely in kernel space") Reviewed-by: Lee Duncan Signed-off-by: Mike Christie Signed-off-by: Martin K. Petersen --- drivers/scsi/scsi_transport_iscsi.c | 471 +++++++++++++++++++++--------------- include/scsi/scsi_transport_iscsi.h | 10 +- 2 files changed, 283 insertions(+), 198 deletions(-) (limited to 'include') diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index bab6654d8ee9..b8a93e607891 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -86,15 +86,11 @@ struct iscsi_internal { struct transport_container session_cont; }; -/* Worker to perform connection failure on unresponsive connections - * completely in kernel space. - */ -static void stop_conn_work_fn(struct work_struct *work); -static DECLARE_WORK(stop_conn_work, stop_conn_work_fn); - static atomic_t iscsi_session_nr; /* sysfs session id for next new session */ static struct workqueue_struct *iscsi_eh_timer_workq; +static struct workqueue_struct *iscsi_conn_cleanup_workq; + static DEFINE_IDA(iscsi_sess_ida); /* * list of registered transports and lock that must @@ -1623,12 +1619,6 @@ static DECLARE_TRANSPORT_CLASS(iscsi_connection_class, static struct sock *nls; static DEFINE_MUTEX(rx_queue_mutex); -/* - * conn_mutex protects the {start,bind,stop,destroy}_conn from racing - * against the kernel stop_connection recovery mechanism - */ -static DEFINE_MUTEX(conn_mutex); - static LIST_HEAD(sesslist); static DEFINE_SPINLOCK(sesslock); static LIST_HEAD(connlist); @@ -2245,6 +2235,123 @@ void iscsi_remove_session(struct iscsi_cls_session *session) } EXPORT_SYMBOL_GPL(iscsi_remove_session); +static void iscsi_stop_conn(struct iscsi_cls_conn *conn, int flag) +{ + ISCSI_DBG_TRANS_CONN(conn, "Stopping conn.\n"); + + switch (flag) { + case STOP_CONN_RECOVER: + conn->state = ISCSI_CONN_FAILED; + break; + case STOP_CONN_TERM: + conn->state = ISCSI_CONN_DOWN; + break; + default: + iscsi_cls_conn_printk(KERN_ERR, conn, "invalid stop flag %d\n", + flag); + return; + } + + conn->transport->stop_conn(conn, flag); + ISCSI_DBG_TRANS_CONN(conn, "Stopping conn done.\n"); +} + +static int iscsi_if_stop_conn(struct iscsi_transport *transport, + struct iscsi_uevent *ev) +{ + int flag = ev->u.stop_conn.flag; + struct iscsi_cls_conn *conn; + + conn = iscsi_conn_lookup(ev->u.stop_conn.sid, ev->u.stop_conn.cid); + if (!conn) + return -EINVAL; + + ISCSI_DBG_TRANS_CONN(conn, "iscsi if conn stop.\n"); + /* + * If this is a termination we have to call stop_conn with that flag + * so the correct states get set. If we haven't run the work yet try to + * avoid the extra run. + */ + if (flag == STOP_CONN_TERM) { + cancel_work_sync(&conn->cleanup_work); + iscsi_stop_conn(conn, flag); + } else { + /* + * Figure out if it was the kernel or userspace initiating this. + */ + if (!test_and_set_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags)) { + iscsi_stop_conn(conn, flag); + } else { + ISCSI_DBG_TRANS_CONN(conn, + "flush kernel conn cleanup.\n"); + flush_work(&conn->cleanup_work); + } + /* + * Only clear for recovery to avoid extra cleanup runs during + * termination. + */ + clear_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags); + } + ISCSI_DBG_TRANS_CONN(conn, "iscsi if conn stop done.\n"); + return 0; +} + +static void iscsi_ep_disconnect(struct iscsi_cls_conn *conn, bool is_active) +{ + struct iscsi_cls_session *session = iscsi_conn_to_session(conn); + struct iscsi_endpoint *ep; + + ISCSI_DBG_TRANS_CONN(conn, "disconnect ep.\n"); + conn->state = ISCSI_CONN_FAILED; + + if (!conn->ep || !session->transport->ep_disconnect) + return; + + ep = conn->ep; + conn->ep = NULL; + + session->transport->unbind_conn(conn, is_active); + session->transport->ep_disconnect(ep); + ISCSI_DBG_TRANS_CONN(conn, "disconnect ep done.\n"); +} + +static void iscsi_cleanup_conn_work_fn(struct work_struct *work) +{ + struct iscsi_cls_conn *conn = container_of(work, struct iscsi_cls_conn, + cleanup_work); + struct iscsi_cls_session *session = iscsi_conn_to_session(conn); + + mutex_lock(&conn->ep_mutex); + /* + * If we are not at least bound there is nothing for us to do. Userspace + * will do a ep_disconnect call if offload is used, but will not be + * doing a stop since there is nothing to clean up, so we have to clear + * the cleanup bit here. + */ + if (conn->state != ISCSI_CONN_BOUND && conn->state != ISCSI_CONN_UP) { + ISCSI_DBG_TRANS_CONN(conn, "Got error while conn is already failed. Ignoring.\n"); + clear_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags); + mutex_unlock(&conn->ep_mutex); + return; + } + + iscsi_ep_disconnect(conn, false); + + if (system_state != SYSTEM_RUNNING) { + /* + * If the user has set up for the session to never timeout + * then hang like they wanted. For all other cases fail right + * away since userspace is not going to relogin. + */ + if (session->recovery_tmo > 0) + session->recovery_tmo = 0; + } + + iscsi_stop_conn(conn, STOP_CONN_RECOVER); + mutex_unlock(&conn->ep_mutex); + ISCSI_DBG_TRANS_CONN(conn, "cleanup done.\n"); +} + void iscsi_free_session(struct iscsi_cls_session *session) { ISCSI_DBG_TRANS_SESSION(session, "Freeing session\n"); @@ -2284,7 +2391,7 @@ iscsi_create_conn(struct iscsi_cls_session *session, int dd_size, uint32_t cid) mutex_init(&conn->ep_mutex); INIT_LIST_HEAD(&conn->conn_list); - INIT_LIST_HEAD(&conn->conn_list_err); + INIT_WORK(&conn->cleanup_work, iscsi_cleanup_conn_work_fn); conn->transport = transport; conn->cid = cid; conn->state = ISCSI_CONN_DOWN; @@ -2341,7 +2448,6 @@ int iscsi_destroy_conn(struct iscsi_cls_conn *conn) spin_lock_irqsave(&connlock, flags); list_del(&conn->conn_list); - list_del(&conn->conn_list_err); spin_unlock_irqrestore(&connlock, flags); transport_unregister_device(&conn->dev); @@ -2456,83 +2562,6 @@ int iscsi_offload_mesg(struct Scsi_Host *shost, } EXPORT_SYMBOL_GPL(iscsi_offload_mesg); -/* - * This can be called without the rx_queue_mutex, if invoked by the kernel - * stop work. But, in that case, it is guaranteed not to race with - * iscsi_destroy by conn_mutex. - */ -static void iscsi_if_stop_conn(struct iscsi_cls_conn *conn, int flag) -{ - /* - * It is important that this path doesn't rely on - * rx_queue_mutex, otherwise, a thread doing allocation on a - * start_session/start_connection could sleep waiting on a - * writeback to a failed iscsi device, that cannot be recovered - * because the lock is held. If we don't hold it here, the - * kernel stop_conn_work_fn has a chance to stop the broken - * session and resolve the allocation. - * - * Still, the user invoked .stop_conn() needs to be serialized - * with stop_conn_work_fn by a private mutex. Not pretty, but - * it works. - */ - mutex_lock(&conn_mutex); - switch (flag) { - case STOP_CONN_RECOVER: - conn->state = ISCSI_CONN_FAILED; - break; - case STOP_CONN_TERM: - conn->state = ISCSI_CONN_DOWN; - break; - default: - iscsi_cls_conn_printk(KERN_ERR, conn, - "invalid stop flag %d\n", flag); - goto unlock; - } - - conn->transport->stop_conn(conn, flag); -unlock: - mutex_unlock(&conn_mutex); -} - -static void stop_conn_work_fn(struct work_struct *work) -{ - struct iscsi_cls_conn *conn, *tmp; - unsigned long flags; - LIST_HEAD(recovery_list); - - spin_lock_irqsave(&connlock, flags); - if (list_empty(&connlist_err)) { - spin_unlock_irqrestore(&connlock, flags); - return; - } - list_splice_init(&connlist_err, &recovery_list); - spin_unlock_irqrestore(&connlock, flags); - - list_for_each_entry_safe(conn, tmp, &recovery_list, conn_list_err) { - uint32_t sid = iscsi_conn_get_sid(conn); - struct iscsi_cls_session *session; - - session = iscsi_session_lookup(sid); - if (session) { - if (system_state != SYSTEM_RUNNING) { - /* - * If the user has set up for the session to - * never timeout then hang like they wanted. - * For all other cases fail right away since - * userspace is not going to relogin. - */ - if (session->recovery_tmo > 0) - session->recovery_tmo = 0; - } - - iscsi_if_stop_conn(conn, STOP_CONN_RECOVER); - } - - list_del_init(&conn->conn_list_err); - } -} - void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error) { struct nlmsghdr *nlh; @@ -2540,12 +2569,9 @@ void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error) struct iscsi_uevent *ev; struct iscsi_internal *priv; int len = nlmsg_total_size(sizeof(*ev)); - unsigned long flags; - spin_lock_irqsave(&connlock, flags); - list_add(&conn->conn_list_err, &connlist_err); - spin_unlock_irqrestore(&connlock, flags); - queue_work(system_unbound_wq, &stop_conn_work); + if (!test_and_set_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags)) + queue_work(iscsi_conn_cleanup_workq, &conn->cleanup_work); priv = iscsi_if_transport_lookup(conn->transport); if (!priv) @@ -2875,26 +2901,17 @@ static int iscsi_if_destroy_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev) { struct iscsi_cls_conn *conn; - unsigned long flags; conn = iscsi_conn_lookup(ev->u.d_conn.sid, ev->u.d_conn.cid); if (!conn) return -EINVAL; - spin_lock_irqsave(&connlock, flags); - if (!list_empty(&conn->conn_list_err)) { - spin_unlock_irqrestore(&connlock, flags); - return -EAGAIN; - } - spin_unlock_irqrestore(&connlock, flags); - + ISCSI_DBG_TRANS_CONN(conn, "Flushing cleanup during destruction\n"); + flush_work(&conn->cleanup_work); ISCSI_DBG_TRANS_CONN(conn, "Destroying transport conn\n"); - mutex_lock(&conn_mutex); if (transport->destroy_conn) transport->destroy_conn(conn); - mutex_unlock(&conn_mutex); - return 0; } @@ -2973,7 +2990,7 @@ release_host: } static int iscsi_if_ep_disconnect(struct iscsi_transport *transport, - u64 ep_handle, bool is_active) + u64 ep_handle) { struct iscsi_cls_conn *conn; struct iscsi_endpoint *ep; @@ -2984,17 +3001,30 @@ static int iscsi_if_ep_disconnect(struct iscsi_transport *transport, ep = iscsi_lookup_endpoint(ep_handle); if (!ep) return -EINVAL; + conn = ep->conn; - if (conn) { - mutex_lock(&conn->ep_mutex); - conn->ep = NULL; + if (!conn) { + /* + * conn was not even bound yet, so we can't get iscsi conn + * failures yet. + */ + transport->ep_disconnect(ep); + goto put_ep; + } + + mutex_lock(&conn->ep_mutex); + /* Check if this was a conn error and the kernel took ownership */ + if (test_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags)) { + ISCSI_DBG_TRANS_CONN(conn, "flush kernel conn cleanup.\n"); mutex_unlock(&conn->ep_mutex); - conn->state = ISCSI_CONN_FAILED; - transport->unbind_conn(conn, is_active); + flush_work(&conn->cleanup_work); + goto put_ep; } - transport->ep_disconnect(ep); + iscsi_ep_disconnect(conn, false); + mutex_unlock(&conn->ep_mutex); +put_ep: iscsi_put_endpoint(ep); return 0; } @@ -3025,8 +3055,7 @@ iscsi_if_transport_ep(struct iscsi_transport *transport, break; case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: rc = iscsi_if_ep_disconnect(transport, - ev->u.ep_disconnect.ep_handle, - false); + ev->u.ep_disconnect.ep_handle); break; } return rc; @@ -3653,18 +3682,129 @@ exit_host_stats: return err; } +static int iscsi_if_transport_conn(struct iscsi_transport *transport, + struct nlmsghdr *nlh) +{ + struct iscsi_uevent *ev = nlmsg_data(nlh); + struct iscsi_cls_session *session; + struct iscsi_cls_conn *conn = NULL; + struct iscsi_endpoint *ep; + uint32_t pdu_len; + int err = 0; + + switch (nlh->nlmsg_type) { + case ISCSI_UEVENT_CREATE_CONN: + return iscsi_if_create_conn(transport, ev); + case ISCSI_UEVENT_DESTROY_CONN: + return iscsi_if_destroy_conn(transport, ev); + case ISCSI_UEVENT_STOP_CONN: + return iscsi_if_stop_conn(transport, ev); + } + + /* + * The following cmds need to be run under the ep_mutex so in kernel + * conn cleanup (ep_disconnect + unbind and conn) is not done while + * these are running. They also must not run if we have just run a conn + * cleanup because they would set the state in a way that might allow + * IO or send IO themselves. + */ + switch (nlh->nlmsg_type) { + case ISCSI_UEVENT_START_CONN: + conn = iscsi_conn_lookup(ev->u.start_conn.sid, + ev->u.start_conn.cid); + break; + case ISCSI_UEVENT_BIND_CONN: + conn = iscsi_conn_lookup(ev->u.b_conn.sid, ev->u.b_conn.cid); + break; + case ISCSI_UEVENT_SEND_PDU: + conn = iscsi_conn_lookup(ev->u.send_pdu.sid, ev->u.send_pdu.cid); + break; + } + + if (!conn) + return -EINVAL; + + mutex_lock(&conn->ep_mutex); + if (test_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags)) { + mutex_unlock(&conn->ep_mutex); + ev->r.retcode = -ENOTCONN; + return 0; + } + + switch (nlh->nlmsg_type) { + case ISCSI_UEVENT_BIND_CONN: + if (conn->ep) { + /* + * For offload boot support where iscsid is restarted + * during the pivot root stage, the ep will be intact + * here when the new iscsid instance starts up and + * reconnects. + */ + iscsi_ep_disconnect(conn, true); + } + + session = iscsi_session_lookup(ev->u.b_conn.sid); + if (!session) { + err = -EINVAL; + break; + } + + ev->r.retcode = transport->bind_conn(session, conn, + ev->u.b_conn.transport_eph, + ev->u.b_conn.is_leading); + if (!ev->r.retcode) + conn->state = ISCSI_CONN_BOUND; + + if (ev->r.retcode || !transport->ep_connect) + break; + + ep = iscsi_lookup_endpoint(ev->u.b_conn.transport_eph); + if (ep) { + ep->conn = conn; + conn->ep = ep; + iscsi_put_endpoint(ep); + } else { + err = -ENOTCONN; + iscsi_cls_conn_printk(KERN_ERR, conn, + "Could not set ep conn binding\n"); + } + break; + case ISCSI_UEVENT_START_CONN: + ev->r.retcode = transport->start_conn(conn); + if (!ev->r.retcode) + conn->state = ISCSI_CONN_UP; + break; + case ISCSI_UEVENT_SEND_PDU: + pdu_len = nlh->nlmsg_len - sizeof(*nlh) - sizeof(*ev); + + if ((ev->u.send_pdu.hdr_size > pdu_len) || + (ev->u.send_pdu.data_size > (pdu_len - ev->u.send_pdu.hdr_size))) { + err = -EINVAL; + break; + } + + ev->r.retcode = transport->send_pdu(conn, + (struct iscsi_hdr *)((char *)ev + sizeof(*ev)), + (char *)ev + sizeof(*ev) + ev->u.send_pdu.hdr_size, + ev->u.send_pdu.data_size); + break; + default: + err = -ENOSYS; + } + + mutex_unlock(&conn->ep_mutex); + return err; +} static int iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) { int err = 0; u32 portid; - u32 pdu_len; struct iscsi_uevent *ev = nlmsg_data(nlh); struct iscsi_transport *transport = NULL; struct iscsi_internal *priv; struct iscsi_cls_session *session; - struct iscsi_cls_conn *conn; struct iscsi_endpoint *ep = NULL; if (!netlink_capable(skb, CAP_SYS_ADMIN)) @@ -3741,90 +3881,16 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) else err = -EINVAL; break; - case ISCSI_UEVENT_CREATE_CONN: - err = iscsi_if_create_conn(transport, ev); - break; - case ISCSI_UEVENT_DESTROY_CONN: - err = iscsi_if_destroy_conn(transport, ev); - break; - case ISCSI_UEVENT_BIND_CONN: - session = iscsi_session_lookup(ev->u.b_conn.sid); - conn = iscsi_conn_lookup(ev->u.b_conn.sid, ev->u.b_conn.cid); - - if (conn && conn->ep) - iscsi_if_ep_disconnect(transport, conn->ep->id, true); - - if (!session || !conn) { - err = -EINVAL; - break; - } - - mutex_lock(&conn_mutex); - ev->r.retcode = transport->bind_conn(session, conn, - ev->u.b_conn.transport_eph, - ev->u.b_conn.is_leading); - if (!ev->r.retcode) - conn->state = ISCSI_CONN_BOUND; - mutex_unlock(&conn_mutex); - - if (ev->r.retcode || !transport->ep_connect) - break; - - ep = iscsi_lookup_endpoint(ev->u.b_conn.transport_eph); - if (ep) { - ep->conn = conn; - - mutex_lock(&conn->ep_mutex); - conn->ep = ep; - mutex_unlock(&conn->ep_mutex); - iscsi_put_endpoint(ep); - } else - iscsi_cls_conn_printk(KERN_ERR, conn, - "Could not set ep conn " - "binding\n"); - break; case ISCSI_UEVENT_SET_PARAM: err = iscsi_set_param(transport, ev); break; - case ISCSI_UEVENT_START_CONN: - conn = iscsi_conn_lookup(ev->u.start_conn.sid, ev->u.start_conn.cid); - if (conn) { - mutex_lock(&conn_mutex); - ev->r.retcode = transport->start_conn(conn); - if (!ev->r.retcode) - conn->state = ISCSI_CONN_UP; - mutex_unlock(&conn_mutex); - } - else - err = -EINVAL; - break; + case ISCSI_UEVENT_CREATE_CONN: + case ISCSI_UEVENT_DESTROY_CONN: case ISCSI_UEVENT_STOP_CONN: - conn = iscsi_conn_lookup(ev->u.stop_conn.sid, ev->u.stop_conn.cid); - if (conn) - iscsi_if_stop_conn(conn, ev->u.stop_conn.flag); - else - err = -EINVAL; - break; + case ISCSI_UEVENT_START_CONN: + case ISCSI_UEVENT_BIND_CONN: case ISCSI_UEVENT_SEND_PDU: - pdu_len = nlh->nlmsg_len - sizeof(*nlh) - sizeof(*ev); - - if ((ev->u.send_pdu.hdr_size > pdu_len) || - (ev->u.send_pdu.data_size > (pdu_len - ev->u.send_pdu.hdr_size))) { - err = -EINVAL; - break; - } - - conn = iscsi_conn_lookup(ev->u.send_pdu.sid, ev->u.send_pdu.cid); - if (conn) { - mutex_lock(&conn_mutex); - ev->r.retcode = transport->send_pdu(conn, - (struct iscsi_hdr*)((char*)ev + sizeof(*ev)), - (char*)ev + sizeof(*ev) + ev->u.send_pdu.hdr_size, - ev->u.send_pdu.data_size); - mutex_unlock(&conn_mutex); - } - else - err = -EINVAL; + err = iscsi_if_transport_conn(transport, nlh); break; case ISCSI_UEVENT_GET_STATS: err = iscsi_if_get_stats(transport, nlh); @@ -4827,8 +4893,18 @@ static __init int iscsi_transport_init(void) goto release_nls; } + iscsi_conn_cleanup_workq = alloc_workqueue("%s", + WQ_SYSFS | WQ_MEM_RECLAIM | WQ_UNBOUND, 0, + "iscsi_conn_cleanup"); + if (!iscsi_conn_cleanup_workq) { + err = -ENOMEM; + goto destroy_wq; + } + return 0; +destroy_wq: + destroy_workqueue(iscsi_eh_timer_workq); release_nls: netlink_kernel_release(nls); unregister_flashnode_bus: @@ -4850,6 +4926,7 @@ unregister_transport_class: static void __exit iscsi_transport_exit(void) { + destroy_workqueue(iscsi_conn_cleanup_workq); destroy_workqueue(iscsi_eh_timer_workq); netlink_kernel_release(nls); bus_unregister(&iscsi_flashnode_bus); diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h index d36a72cf049f..3974329d4d02 100644 --- a/include/scsi/scsi_transport_iscsi.h +++ b/include/scsi/scsi_transport_iscsi.h @@ -197,15 +197,23 @@ enum iscsi_connection_state { ISCSI_CONN_BOUND, }; +#define ISCSI_CLS_CONN_BIT_CLEANUP 1 + struct iscsi_cls_conn { struct list_head conn_list; /* item in connlist */ - struct list_head conn_list_err; /* item in connlist_err */ void *dd_data; /* LLD private data */ struct iscsi_transport *transport; uint32_t cid; /* connection id */ + /* + * This protects the conn startup and binding/unbinding of the ep to + * the conn. Unbinding includes ep_disconnect and stop_conn. + */ struct mutex ep_mutex; struct iscsi_endpoint *ep; + unsigned long flags; + struct work_struct cleanup_work; + struct device dev; /* sysfs transport/container device */ enum iscsi_connection_state state; }; -- cgit v1.2.3 From b1d19e8c92cfb0ded180ef3376c20e130414e067 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Tue, 25 May 2021 13:18:03 -0500 Subject: scsi: iscsi: Add iscsi_cls_conn refcount helpers There are a couple places where we could free the iscsi_cls_conn while it's still in use. This adds some helpers to get/put a refcount on the struct and converts an exiting user. Subsequent commits will then use the helpers to fix 2 bugs in the eh code. Link: https://lore.kernel.org/r/20210525181821.7617-11-michael.christie@oracle.com Reviewed-by: Lee Duncan Signed-off-by: Mike Christie Signed-off-by: Martin K. Petersen --- drivers/scsi/libiscsi.c | 7 ++----- drivers/scsi/scsi_transport_iscsi.c | 12 ++++++++++++ include/scsi/scsi_transport_iscsi.h | 2 ++ 3 files changed, 16 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 2aaf83678654..ab39d7f65bbb 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -1361,7 +1361,6 @@ void iscsi_session_failure(struct iscsi_session *session, enum iscsi_err err) { struct iscsi_conn *conn; - struct device *dev; spin_lock_bh(&session->frwd_lock); conn = session->leadconn; @@ -1370,10 +1369,8 @@ void iscsi_session_failure(struct iscsi_session *session, return; } - dev = get_device(&conn->cls_conn->dev); + iscsi_get_conn(conn->cls_conn); spin_unlock_bh(&session->frwd_lock); - if (!dev) - return; /* * if the host is being removed bypass the connection * recovery initialization because we are going to kill @@ -1383,7 +1380,7 @@ void iscsi_session_failure(struct iscsi_session *session, iscsi_conn_error_event(conn->cls_conn, err); else iscsi_conn_failure(conn, err); - put_device(dev); + iscsi_put_conn(conn->cls_conn); } EXPORT_SYMBOL_GPL(iscsi_session_failure); diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index b8a93e607891..909134b9c313 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -2457,6 +2457,18 @@ int iscsi_destroy_conn(struct iscsi_cls_conn *conn) } EXPORT_SYMBOL_GPL(iscsi_destroy_conn); +void iscsi_put_conn(struct iscsi_cls_conn *conn) +{ + put_device(&conn->dev); +} +EXPORT_SYMBOL_GPL(iscsi_put_conn); + +void iscsi_get_conn(struct iscsi_cls_conn *conn) +{ + get_device(&conn->dev); +} +EXPORT_SYMBOL_GPL(iscsi_get_conn); + /* * iscsi interface functions */ diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h index 3974329d4d02..c5d7810fd792 100644 --- a/include/scsi/scsi_transport_iscsi.h +++ b/include/scsi/scsi_transport_iscsi.h @@ -443,6 +443,8 @@ extern void iscsi_remove_session(struct iscsi_cls_session *session); extern void iscsi_free_session(struct iscsi_cls_session *session); extern struct iscsi_cls_conn *iscsi_create_conn(struct iscsi_cls_session *sess, int dd_size, uint32_t cid); +extern void iscsi_put_conn(struct iscsi_cls_conn *conn); +extern void iscsi_get_conn(struct iscsi_cls_conn *conn); extern int iscsi_destroy_conn(struct iscsi_cls_conn *conn); extern void iscsi_unblock_session(struct iscsi_cls_session *session); extern void iscsi_block_session(struct iscsi_cls_session *session); -- cgit v1.2.3 From ec29d0ac29be366450a7faffbcf8cba3a6a3b506 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Tue, 25 May 2021 13:18:06 -0500 Subject: scsi: iscsi: Fix conn use after free during resets If we haven't done a unbind target call we can race where iscsi_conn_teardown wakes up the EH thread and then frees the conn while those threads are still accessing the conn ehwait. We can only do one TMF per session so this just moves the TMF fields from the conn to the session. We can then rely on the iscsi_session_teardown->iscsi_remove_session->__iscsi_unbind_session call to remove the target and it's devices, and know after that point there is no device or scsi-ml callout trying to access the session. Link: https://lore.kernel.org/r/20210525181821.7617-14-michael.christie@oracle.com Reviewed-by: Lee Duncan Signed-off-by: Mike Christie Signed-off-by: Martin K. Petersen --- drivers/scsi/libiscsi.c | 115 +++++++++++++++++++++++------------------------- include/scsi/libiscsi.h | 11 +++-- 2 files changed, 60 insertions(+), 66 deletions(-) (limited to 'include') diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index b7445d9e99d6..94abb093098d 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -230,11 +230,11 @@ static int iscsi_prep_ecdb_ahs(struct iscsi_task *task) */ static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode) { - struct iscsi_conn *conn = task->conn; - struct iscsi_tm *tmf = &conn->tmhdr; + struct iscsi_session *session = task->conn->session; + struct iscsi_tm *tmf = &session->tmhdr; u64 hdr_lun; - if (conn->tmf_state == TMF_INITIAL) + if (session->tmf_state == TMF_INITIAL) return 0; if ((tmf->opcode & ISCSI_OPCODE_MASK) != ISCSI_OP_SCSI_TMFUNC) @@ -254,24 +254,19 @@ static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode) * Fail all SCSI cmd PDUs */ if (opcode != ISCSI_OP_SCSI_DATA_OUT) { - iscsi_conn_printk(KERN_INFO, conn, - "task [op %x itt " - "0x%x/0x%x] " - "rejected.\n", - opcode, task->itt, - task->hdr_itt); + iscsi_session_printk(KERN_INFO, session, + "task [op %x itt 0x%x/0x%x] rejected.\n", + opcode, task->itt, task->hdr_itt); return -EACCES; } /* * And also all data-out PDUs in response to R2T * if fast_abort is set. */ - if (conn->session->fast_abort) { - iscsi_conn_printk(KERN_INFO, conn, - "task [op %x itt " - "0x%x/0x%x] fast abort.\n", - opcode, task->itt, - task->hdr_itt); + if (session->fast_abort) { + iscsi_session_printk(KERN_INFO, session, + "task [op %x itt 0x%x/0x%x] fast abort.\n", + opcode, task->itt, task->hdr_itt); return -EACCES; } break; @@ -284,7 +279,7 @@ static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode) */ if (opcode == ISCSI_OP_SCSI_DATA_OUT && task->hdr_itt == tmf->rtt) { - ISCSI_DBG_SESSION(conn->session, + ISCSI_DBG_SESSION(session, "Preventing task %x/%x from sending " "data-out due to abort task in " "progress\n", task->itt, @@ -936,20 +931,21 @@ iscsi_data_in_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr, static void iscsi_tmf_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr) { struct iscsi_tm_rsp *tmf = (struct iscsi_tm_rsp *)hdr; + struct iscsi_session *session = conn->session; conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1; conn->tmfrsp_pdus_cnt++; - if (conn->tmf_state != TMF_QUEUED) + if (session->tmf_state != TMF_QUEUED) return; if (tmf->response == ISCSI_TMF_RSP_COMPLETE) - conn->tmf_state = TMF_SUCCESS; + session->tmf_state = TMF_SUCCESS; else if (tmf->response == ISCSI_TMF_RSP_NO_TASK) - conn->tmf_state = TMF_NOT_FOUND; + session->tmf_state = TMF_NOT_FOUND; else - conn->tmf_state = TMF_FAILED; - wake_up(&conn->ehwait); + session->tmf_state = TMF_FAILED; + wake_up(&session->ehwait); } static int iscsi_send_nopout(struct iscsi_conn *conn, struct iscsi_nopin *rhdr) @@ -1826,15 +1822,14 @@ EXPORT_SYMBOL_GPL(iscsi_target_alloc); static void iscsi_tmf_timedout(struct timer_list *t) { - struct iscsi_conn *conn = from_timer(conn, t, tmf_timer); - struct iscsi_session *session = conn->session; + struct iscsi_session *session = from_timer(session, t, tmf_timer); spin_lock(&session->frwd_lock); - if (conn->tmf_state == TMF_QUEUED) { - conn->tmf_state = TMF_TIMEDOUT; + if (session->tmf_state == TMF_QUEUED) { + session->tmf_state = TMF_TIMEDOUT; ISCSI_DBG_EH(session, "tmf timedout\n"); /* unblock eh_abort() */ - wake_up(&conn->ehwait); + wake_up(&session->ehwait); } spin_unlock(&session->frwd_lock); } @@ -1857,8 +1852,8 @@ static int iscsi_exec_task_mgmt_fn(struct iscsi_conn *conn, return -EPERM; } conn->tmfcmd_pdus_cnt++; - conn->tmf_timer.expires = timeout * HZ + jiffies; - add_timer(&conn->tmf_timer); + session->tmf_timer.expires = timeout * HZ + jiffies; + add_timer(&session->tmf_timer); ISCSI_DBG_EH(session, "tmf set timeout\n"); spin_unlock_bh(&session->frwd_lock); @@ -1872,12 +1867,12 @@ static int iscsi_exec_task_mgmt_fn(struct iscsi_conn *conn, * 3) session is terminated or restarted or userspace has * given up on recovery */ - wait_event_interruptible(conn->ehwait, age != session->age || + wait_event_interruptible(session->ehwait, age != session->age || session->state != ISCSI_STATE_LOGGED_IN || - conn->tmf_state != TMF_QUEUED); + session->tmf_state != TMF_QUEUED); if (signal_pending(current)) flush_signals(current); - del_timer_sync(&conn->tmf_timer); + del_timer_sync(&session->tmf_timer); mutex_lock(&session->eh_mutex); spin_lock_bh(&session->frwd_lock); @@ -2308,17 +2303,17 @@ int iscsi_eh_abort(struct scsi_cmnd *sc) } /* only have one tmf outstanding at a time */ - if (conn->tmf_state != TMF_INITIAL) + if (session->tmf_state != TMF_INITIAL) goto failed; - conn->tmf_state = TMF_QUEUED; + session->tmf_state = TMF_QUEUED; - hdr = &conn->tmhdr; + hdr = &session->tmhdr; iscsi_prep_abort_task_pdu(task, hdr); if (iscsi_exec_task_mgmt_fn(conn, hdr, age, session->abort_timeout)) goto failed; - switch (conn->tmf_state) { + switch (session->tmf_state) { case TMF_SUCCESS: spin_unlock_bh(&session->frwd_lock); /* @@ -2333,7 +2328,7 @@ int iscsi_eh_abort(struct scsi_cmnd *sc) */ spin_lock_bh(&session->frwd_lock); fail_scsi_task(task, DID_ABORT); - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; memset(hdr, 0, sizeof(*hdr)); spin_unlock_bh(&session->frwd_lock); iscsi_start_tx(conn); @@ -2344,7 +2339,7 @@ int iscsi_eh_abort(struct scsi_cmnd *sc) goto failed_unlocked; case TMF_NOT_FOUND: if (!sc->SCp.ptr) { - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; memset(hdr, 0, sizeof(*hdr)); /* task completed before tmf abort response */ ISCSI_DBG_EH(session, "sc completed while abort in " @@ -2353,7 +2348,7 @@ int iscsi_eh_abort(struct scsi_cmnd *sc) } fallthrough; default: - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; goto failed; } @@ -2414,11 +2409,11 @@ int iscsi_eh_device_reset(struct scsi_cmnd *sc) conn = session->leadconn; /* only have one tmf outstanding at a time */ - if (conn->tmf_state != TMF_INITIAL) + if (session->tmf_state != TMF_INITIAL) goto unlock; - conn->tmf_state = TMF_QUEUED; + session->tmf_state = TMF_QUEUED; - hdr = &conn->tmhdr; + hdr = &session->tmhdr; iscsi_prep_lun_reset_pdu(sc, hdr); if (iscsi_exec_task_mgmt_fn(conn, hdr, session->age, @@ -2427,7 +2422,7 @@ int iscsi_eh_device_reset(struct scsi_cmnd *sc) goto unlock; } - switch (conn->tmf_state) { + switch (session->tmf_state) { case TMF_SUCCESS: break; case TMF_TIMEDOUT: @@ -2435,7 +2430,7 @@ int iscsi_eh_device_reset(struct scsi_cmnd *sc) iscsi_conn_failure(conn, ISCSI_ERR_SCSI_EH_SESSION_RST); goto done; default: - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; goto unlock; } @@ -2447,7 +2442,7 @@ int iscsi_eh_device_reset(struct scsi_cmnd *sc) spin_lock_bh(&session->frwd_lock); memset(hdr, 0, sizeof(*hdr)); fail_scsi_tasks(conn, sc->device->lun, DID_ERROR); - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; spin_unlock_bh(&session->frwd_lock); iscsi_start_tx(conn); @@ -2470,8 +2465,7 @@ void iscsi_session_recovery_timedout(struct iscsi_cls_session *cls_session) spin_lock_bh(&session->frwd_lock); if (session->state != ISCSI_STATE_LOGGED_IN) { session->state = ISCSI_STATE_RECOVERY_FAILED; - if (session->leadconn) - wake_up(&session->leadconn->ehwait); + wake_up(&session->ehwait); } spin_unlock_bh(&session->frwd_lock); } @@ -2516,7 +2510,7 @@ failed: iscsi_put_conn(conn->cls_conn); ISCSI_DBG_EH(session, "wait for relogin\n"); - wait_event_interruptible(conn->ehwait, + wait_event_interruptible(session->ehwait, session->state == ISCSI_STATE_TERMINATE || session->state == ISCSI_STATE_LOGGED_IN || session->state == ISCSI_STATE_RECOVERY_FAILED); @@ -2577,11 +2571,11 @@ static int iscsi_eh_target_reset(struct scsi_cmnd *sc) conn = session->leadconn; /* only have one tmf outstanding at a time */ - if (conn->tmf_state != TMF_INITIAL) + if (session->tmf_state != TMF_INITIAL) goto unlock; - conn->tmf_state = TMF_QUEUED; + session->tmf_state = TMF_QUEUED; - hdr = &conn->tmhdr; + hdr = &session->tmhdr; iscsi_prep_tgt_reset_pdu(sc, hdr); if (iscsi_exec_task_mgmt_fn(conn, hdr, session->age, @@ -2590,7 +2584,7 @@ static int iscsi_eh_target_reset(struct scsi_cmnd *sc) goto unlock; } - switch (conn->tmf_state) { + switch (session->tmf_state) { case TMF_SUCCESS: break; case TMF_TIMEDOUT: @@ -2598,7 +2592,7 @@ static int iscsi_eh_target_reset(struct scsi_cmnd *sc) iscsi_conn_failure(conn, ISCSI_ERR_SCSI_EH_SESSION_RST); goto done; default: - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; goto unlock; } @@ -2610,7 +2604,7 @@ static int iscsi_eh_target_reset(struct scsi_cmnd *sc) spin_lock_bh(&session->frwd_lock); memset(hdr, 0, sizeof(*hdr)); fail_scsi_tasks(conn, -1, DID_ERROR); - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; spin_unlock_bh(&session->frwd_lock); iscsi_start_tx(conn); @@ -2940,7 +2934,10 @@ iscsi_session_setup(struct iscsi_transport *iscsit, struct Scsi_Host *shost, session->tt = iscsit; session->dd_data = cls_session->dd_data + sizeof(*session); + session->tmf_state = TMF_INITIAL; + timer_setup(&session->tmf_timer, iscsi_tmf_timedout, 0); mutex_init(&session->eh_mutex); + spin_lock_init(&session->frwd_lock); spin_lock_init(&session->back_lock); @@ -3044,7 +3041,6 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, int dd_size, conn->c_stage = ISCSI_CONN_INITIAL_STAGE; conn->id = conn_idx; conn->exp_statsn = 0; - conn->tmf_state = TMF_INITIAL; timer_setup(&conn->transport_timer, iscsi_check_transport_timeouts, 0); @@ -3069,8 +3065,7 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, int dd_size, goto login_task_data_alloc_fail; conn->login_task->data = conn->data = data; - timer_setup(&conn->tmf_timer, iscsi_tmf_timedout, 0); - init_waitqueue_head(&conn->ehwait); + init_waitqueue_head(&session->ehwait); return cls_conn; @@ -3105,7 +3100,7 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn) * leading connection? then give up on recovery. */ session->state = ISCSI_STATE_TERMINATE; - wake_up(&conn->ehwait); + wake_up(&session->ehwait); } spin_unlock_bh(&session->frwd_lock); @@ -3180,7 +3175,7 @@ int iscsi_conn_start(struct iscsi_cls_conn *cls_conn) * commands after successful recovery */ conn->stop_stage = 0; - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; session->age++; if (session->age == 16) session->age = 0; @@ -3194,7 +3189,7 @@ int iscsi_conn_start(struct iscsi_cls_conn *cls_conn) spin_unlock_bh(&session->frwd_lock); iscsi_unblock_session(session->cls_session); - wake_up(&conn->ehwait); + wake_up(&session->ehwait); return 0; } EXPORT_SYMBOL_GPL(iscsi_conn_start); @@ -3288,7 +3283,7 @@ void iscsi_conn_stop(struct iscsi_cls_conn *cls_conn, int flag) spin_lock_bh(&session->frwd_lock); fail_scsi_tasks(conn, -1, DID_TRANSPORT_DISRUPTED); fail_mgmt_tasks(session, conn); - memset(&conn->tmhdr, 0, sizeof(conn->tmhdr)); + memset(&session->tmhdr, 0, sizeof(session->tmhdr)); spin_unlock_bh(&session->frwd_lock); mutex_unlock(&session->eh_mutex); } diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 13d413a0b8b6..9d7908265afe 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -202,12 +202,6 @@ struct iscsi_conn { unsigned long suspend_tx; /* suspend Tx */ unsigned long suspend_rx; /* suspend Rx */ - /* abort */ - wait_queue_head_t ehwait; /* used in eh_abort() */ - struct iscsi_tm tmhdr; - struct timer_list tmf_timer; - int tmf_state; /* see TMF_INITIAL, etc.*/ - /* negotiated params */ unsigned max_recv_dlength; /* initiator_max_recv_dsl*/ unsigned max_xmit_dlength; /* target_max_recv_dsl */ @@ -277,6 +271,11 @@ struct iscsi_session { * and recv lock. */ struct mutex eh_mutex; + /* abort */ + wait_queue_head_t ehwait; /* used in eh_abort() */ + struct iscsi_tm tmhdr; + struct timer_list tmf_timer; + int tmf_state; /* see TMF_INITIAL, etc.*/ /* iSCSI session-wide sequencing */ uint32_t cmdsn; -- cgit v1.2.3 From 99b0603313eecb9b0b99fd2e60bae1e03e6b038b Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Tue, 25 May 2021 13:18:10 -0500 Subject: scsi: iscsi: Hold task ref during TMF timeout handling For aborts, qedi needs to cleanup the FW then send the TMF from a worker thread. While it's doing these the cmd could complete normally and the TMF could time out. libiscsi would then complete the iscsi_task which will call into the driver to cleanup the driver level resources while it still might be accessing them for the cleanup/abort. This has iscsi_eh_abort keep the iscsi_task ref if the TMF times out, so qedi does not have to worry about if the task is being freed while in use and does not need to get its own ref. Link: https://lore.kernel.org/r/20210525181821.7617-18-michael.christie@oracle.com Reviewed-by: Lee Duncan Signed-off-by: Mike Christie Signed-off-by: Martin K. Petersen --- drivers/scsi/libiscsi.c | 15 ++++++++++++++- include/scsi/libiscsi.h | 1 + 2 files changed, 15 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 8222db4f8fef..e57d6355e7c7 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -573,6 +573,11 @@ static bool cleanup_queued_task(struct iscsi_task *task) __iscsi_put_task(task); } + if (conn->session->running_aborted_task == task) { + conn->session->running_aborted_task = NULL; + __iscsi_put_task(task); + } + if (conn->task == task) { conn->task = NULL; __iscsi_put_task(task); @@ -2334,6 +2339,7 @@ int iscsi_eh_abort(struct scsi_cmnd *sc) iscsi_start_tx(conn); goto success_unlocked; case TMF_TIMEDOUT: + session->running_aborted_task = task; spin_unlock_bh(&session->frwd_lock); iscsi_conn_failure(conn, ISCSI_ERR_SCSI_EH_SESSION_RST); goto failed_unlocked; @@ -2367,7 +2373,14 @@ failed: failed_unlocked: ISCSI_DBG_EH(session, "abort failed [sc %p itt 0x%x]\n", sc, task ? task->itt : 0); - iscsi_put_task(task); + /* + * The driver might be accessing the task so hold the ref. The conn + * stop cleanup will drop the ref after ep_disconnect so we know the + * driver's no longer touching the task. + */ + if (!session->running_aborted_task) + iscsi_put_task(task); + iscsi_put_conn(conn->cls_conn); mutex_unlock(&session->eh_mutex); return FAILED; diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 9d7908265afe..4ee233e5a6ff 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -276,6 +276,7 @@ struct iscsi_session { struct iscsi_tm tmhdr; struct timer_list tmf_timer; int tmf_state; /* see TMF_INITIAL, etc.*/ + struct iscsi_task *running_aborted_task; /* iSCSI session-wide sequencing */ uint32_t cmdsn; -- cgit v1.2.3 From d377f415dddc18b33c88dcd41cfe4fe6d9db82fb Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Sun, 23 May 2021 19:54:55 -0700 Subject: scsi: libsas: Introduce more SAM status code aliases in enum exec_status This patch prepares for converting SAM status codes into an enum. Without this patch converting SAM status codes into an enumeration type would trigger complaints about enum type mismatches for the SAS code. Link: https://lore.kernel.org/r/20210524025457.11299-2-bvanassche@acm.org Cc: Hannes Reinecke Cc: Artur Paszkiewicz Cc: Jason Yan Reviewed-by: John Garry Reviewed-by: Himanshu Madhani Acked-by: Jack Wang Signed-off-by: Bart Van Assche Signed-off-by: Martin K. Petersen --- drivers/scsi/aic94xx/aic94xx_task.c | 2 +- drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 8 ++++---- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 8 ++++---- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 8 ++++---- drivers/scsi/isci/request.c | 10 +++++----- drivers/scsi/isci/task.c | 2 +- drivers/scsi/libsas/sas_ata.c | 7 ++++--- drivers/scsi/libsas/sas_expander.c | 2 +- drivers/scsi/libsas/sas_task.c | 4 ++-- drivers/scsi/mvsas/mv_sas.c | 10 +++++----- drivers/scsi/pm8001/pm8001_hwi.c | 16 ++++++++-------- drivers/scsi/pm8001/pm8001_sas.c | 4 ++-- drivers/scsi/pm8001/pm80xx_hwi.c | 14 +++++++------- include/scsi/libsas.h | 12 +++++++++--- 14 files changed, 57 insertions(+), 50 deletions(-) (limited to 'include') diff --git a/drivers/scsi/aic94xx/aic94xx_task.c b/drivers/scsi/aic94xx/aic94xx_task.c index 71d18f607dae..c6b63eae28f5 100644 --- a/drivers/scsi/aic94xx/aic94xx_task.c +++ b/drivers/scsi/aic94xx/aic94xx_task.c @@ -205,7 +205,7 @@ Again: switch (opcode) { case TC_NO_ERROR: ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; break; case TC_UNDERRUN: ts->resp = SAS_TASK_COMPLETE; diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c index 3cba7bfba296..9e58009369f9 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c @@ -1152,14 +1152,14 @@ static void slot_err_v1_hw(struct hisi_hba *hisi_hba, } default: { - ts->stat = SAM_STAT_CHECK_CONDITION; + ts->stat = SAS_SAM_STAT_CHECK_CONDITION; break; } } } break; case SAS_PROTOCOL_SMP: - ts->stat = SAM_STAT_CHECK_CONDITION; + ts->stat = SAS_SAM_STAT_CHECK_CONDITION; break; case SAS_PROTOCOL_SATA: @@ -1281,7 +1281,7 @@ static void slot_complete_v1_hw(struct hisi_hba *hisi_hba, struct scatterlist *sg_resp = &task->smp_task.smp_resp; void *to = page_address(sg_page(sg_resp)); - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; dma_unmap_sg(dev, &task->smp_task.smp_req, 1, DMA_TO_DEVICE); @@ -1298,7 +1298,7 @@ static void slot_complete_v1_hw(struct hisi_hba *hisi_hba, break; default: - ts->stat = SAM_STAT_CHECK_CONDITION; + ts->stat = SAS_SAM_STAT_CHECK_CONDITION; break; } diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index 46f60fc2a069..af51ac49d9fb 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -2168,7 +2168,7 @@ static void slot_err_v2_hw(struct hisi_hba *hisi_hba, } break; case SAS_PROTOCOL_SMP: - ts->stat = SAM_STAT_CHECK_CONDITION; + ts->stat = SAS_SAM_STAT_CHECK_CONDITION; break; case SAS_PROTOCOL_SATA: @@ -2427,7 +2427,7 @@ static void slot_complete_v2_hw(struct hisi_hba *hisi_hba, struct scatterlist *sg_resp = &task->smp_task.smp_resp; void *to = page_address(sg_page(sg_resp)); - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; dma_unmap_sg(dev, &task->smp_task.smp_req, 1, DMA_TO_DEVICE); @@ -2441,12 +2441,12 @@ static void slot_complete_v2_hw(struct hisi_hba *hisi_hba, case SAS_PROTOCOL_STP: case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: { - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; hisi_sas_sata_done(task, slot); break; } default: - ts->stat = SAM_STAT_CHECK_CONDITION; + ts->stat = SAS_SAM_STAT_CHECK_CONDITION; break; } diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 499c770d405c..932afd690183 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -2178,7 +2178,7 @@ slot_err_v3_hw(struct hisi_hba *hisi_hba, struct sas_task *task, hisi_sas_sata_done(task, slot); break; case SAS_PROTOCOL_SMP: - ts->stat = SAM_STAT_CHECK_CONDITION; + ts->stat = SAS_SAM_STAT_CHECK_CONDITION; break; default: break; @@ -2285,7 +2285,7 @@ static void slot_complete_v3_hw(struct hisi_hba *hisi_hba, struct scatterlist *sg_resp = &task->smp_task.smp_resp; void *to = page_address(sg_page(sg_resp)); - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; dma_unmap_sg(dev, &task->smp_task.smp_req, 1, DMA_TO_DEVICE); @@ -2298,11 +2298,11 @@ static void slot_complete_v3_hw(struct hisi_hba *hisi_hba, case SAS_PROTOCOL_SATA: case SAS_PROTOCOL_STP: case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; hisi_sas_sata_done(task, slot); break; default: - ts->stat = SAM_STAT_CHECK_CONDITION; + ts->stat = SAS_SAM_STAT_CHECK_CONDITION; break; } diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index e7c6cb4c1556..e1ff79464131 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2566,7 +2566,7 @@ static void isci_request_handle_controller_specific_errors( if (!idev) *status_ptr = SAS_DEVICE_UNKNOWN; else - *status_ptr = SAM_STAT_TASK_ABORTED; + *status_ptr = SAS_SAM_STAT_TASK_ABORTED; clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); } @@ -2696,7 +2696,7 @@ static void isci_request_handle_controller_specific_errors( default: /* Task in the target is not done. */ *response_ptr = SAS_TASK_UNDELIVERED; - *status_ptr = SAM_STAT_TASK_ABORTED; + *status_ptr = SAS_SAM_STAT_TASK_ABORTED; if (task->task_proto == SAS_PROTOCOL_SMP) set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); @@ -2719,7 +2719,7 @@ static void isci_process_stp_response(struct sas_task *task, struct dev_to_host_ if (ac_err_mask(fis->status)) ts->stat = SAS_PROTO_RESPONSE; else - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; ts->resp = SAS_TASK_COMPLETE; } @@ -2782,7 +2782,7 @@ static void isci_request_io_request_complete(struct isci_host *ihost, case SCI_IO_SUCCESS_IO_DONE_EARLY: response = SAS_TASK_COMPLETE; - status = SAM_STAT_GOOD; + status = SAS_SAM_STAT_GOOD; set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); if (completion_status == SCI_IO_SUCCESS_IO_DONE_EARLY) { @@ -2852,7 +2852,7 @@ static void isci_request_io_request_complete(struct isci_host *ihost, /* Fail the I/O. */ response = SAS_TASK_UNDELIVERED; - status = SAM_STAT_TASK_ABORTED; + status = SAS_SAM_STAT_TASK_ABORTED; clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); break; diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index eeaec26ac324..3fd88d72a0c0 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -160,7 +160,7 @@ int isci_task_execute_task(struct sas_task *task, gfp_t gfp_flags) isci_task_refuse(ihost, task, SAS_TASK_UNDELIVERED, - SAM_STAT_TASK_ABORTED); + SAS_SAM_STAT_TASK_ABORTED); } else { task->task_state_flags |= SAS_TASK_AT_INITIATOR; spin_unlock_irqrestore(&task->task_state_lock, flags); diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index e9a86128f1f1..4aa1fda95f35 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -116,9 +116,10 @@ static void sas_ata_task_done(struct sas_task *task) } } - if (stat->stat == SAS_PROTO_RESPONSE || stat->stat == SAM_STAT_GOOD || - ((stat->stat == SAM_STAT_CHECK_CONDITION && - dev->sata_dev.class == ATA_DEV_ATAPI))) { + if (stat->stat == SAS_PROTO_RESPONSE || + stat->stat == SAS_SAM_STAT_GOOD || + (stat->stat == SAS_SAM_STAT_CHECK_CONDITION && + dev->sata_dev.class == ATA_DEV_ATAPI)) { memcpy(dev->sata_dev.fis, resp->ending_fis, ATA_RESP_FIS_SIZE); if (!link->sactive) { diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 6d583e8c403a..e00688540219 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -101,7 +101,7 @@ static int smp_execute_task_sg(struct domain_device *dev, } } if (task->task_status.resp == SAS_TASK_COMPLETE && - task->task_status.stat == SAM_STAT_GOOD) { + task->task_status.stat == SAS_SAM_STAT_GOOD) { res = 0; break; } diff --git a/drivers/scsi/libsas/sas_task.c b/drivers/scsi/libsas/sas_task.c index e2d42593ce52..2966ead1d421 100644 --- a/drivers/scsi/libsas/sas_task.c +++ b/drivers/scsi/libsas/sas_task.c @@ -20,7 +20,7 @@ void sas_ssp_task_response(struct device *dev, struct sas_task *task, else if (iu->datapres == 1) tstat->stat = iu->resp_data[3]; else if (iu->datapres == 2) { - tstat->stat = SAM_STAT_CHECK_CONDITION; + tstat->stat = SAS_SAM_STAT_CHECK_CONDITION; tstat->buf_valid_size = min_t(int, SAS_STATUS_BUF_SIZE, be32_to_cpu(iu->sense_data_len)); @@ -32,7 +32,7 @@ void sas_ssp_task_response(struct device *dev, struct sas_task *task, } else /* when datapres contains corrupt/unknown value... */ - tstat->stat = SAM_STAT_CHECK_CONDITION; + tstat->stat = SAS_SAM_STAT_CHECK_CONDITION; } EXPORT_SYMBOL_GPL(sas_ssp_task_response); diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c index 1acea528f27f..31d1ea5a5dd2 100644 --- a/drivers/scsi/mvsas/mv_sas.c +++ b/drivers/scsi/mvsas/mv_sas.c @@ -1314,7 +1314,7 @@ static int mvs_exec_internal_tmf_task(struct domain_device *dev, } if (task->task_status.resp == SAS_TASK_COMPLETE && - task->task_status.stat == SAM_STAT_GOOD) { + task->task_status.stat == SAS_SAM_STAT_GOOD) { res = TMF_RESP_FUNC_COMPLETE; break; } @@ -1764,7 +1764,7 @@ int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) case SAS_PROTOCOL_SSP: /* hw says status == 0, datapres == 0 */ if (rx_desc & RXQ_GOOD) { - tstat->stat = SAM_STAT_GOOD; + tstat->stat = SAS_SAM_STAT_GOOD; tstat->resp = SAS_TASK_COMPLETE; } /* response frame present */ @@ -1773,12 +1773,12 @@ int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) sizeof(struct mvs_err_info); sas_ssp_task_response(mvi->dev, task, iu); } else - tstat->stat = SAM_STAT_CHECK_CONDITION; + tstat->stat = SAS_SAM_STAT_CHECK_CONDITION; break; case SAS_PROTOCOL_SMP: { struct scatterlist *sg_resp = &task->smp_task.smp_resp; - tstat->stat = SAM_STAT_GOOD; + tstat->stat = SAS_SAM_STAT_GOOD; to = kmap_atomic(sg_page(sg_resp)); memcpy(to + sg_resp->offset, slot->response + sizeof(struct mvs_err_info), @@ -1795,7 +1795,7 @@ int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) } default: - tstat->stat = SAM_STAT_CHECK_CONDITION; + tstat->stat = SAS_SAM_STAT_CHECK_CONDITION; break; } if (!slot->port->port_attached) { diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c index ecd06d2d7e81..0fb04cec5fe2 100644 --- a/drivers/scsi/pm8001/pm8001_hwi.c +++ b/drivers/scsi/pm8001/pm8001_hwi.c @@ -1930,7 +1930,7 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) param); if (param == 0) { ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; } else { ts->resp = SAS_TASK_COMPLETE; ts->stat = SAS_PROTO_RESPONSE; @@ -2390,7 +2390,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) pm8001_dbg(pm8001_ha, IO, "IO_SUCCESS\n"); if (param == 0) { ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; /* check if response is for SEND READ LOG */ if (pm8001_dev && (pm8001_dev->id & NCQ_READ_LOG_FLAG)) { @@ -2912,7 +2912,7 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) case IO_SUCCESS: pm8001_dbg(pm8001_ha, IO, "IO_SUCCESS\n"); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; if (pm8001_dev) atomic_dec(&pm8001_dev->running_req); break; @@ -2939,17 +2939,17 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) case IO_ERROR_HW_TIMEOUT: pm8001_dbg(pm8001_ha, IO, "IO_ERROR_HW_TIMEOUT\n"); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_BUSY; + ts->stat = SAS_SAM_STAT_BUSY; break; case IO_XFER_ERROR_BREAK: pm8001_dbg(pm8001_ha, IO, "IO_XFER_ERROR_BREAK\n"); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_BUSY; + ts->stat = SAS_SAM_STAT_BUSY; break; case IO_XFER_ERROR_PHY_NOT_READY: pm8001_dbg(pm8001_ha, IO, "IO_XFER_ERROR_PHY_NOT_READY\n"); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_BUSY; + ts->stat = SAS_SAM_STAT_BUSY; break; case IO_OPEN_CNX_ERROR_PROTOCOL_NOT_SUPPORTED: pm8001_dbg(pm8001_ha, IO, @@ -3710,7 +3710,7 @@ int pm8001_mpi_task_abort_resp(struct pm8001_hba_info *pm8001_ha, void *piomb) case IO_SUCCESS: pm8001_dbg(pm8001_ha, EH, "IO_SUCCESS\n"); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; break; case IO_NOT_VALID: pm8001_dbg(pm8001_ha, EH, "IO_NOT_VALID\n"); @@ -4355,7 +4355,7 @@ static int pm8001_chip_sata_req(struct pm8001_hba_info *pm8001_ha, spin_lock_irqsave(&task->task_state_lock, flags); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; task->task_state_flags &= ~SAS_TASK_STATE_PENDING; task->task_state_flags &= ~SAS_TASK_AT_INITIATOR; task->task_state_flags |= SAS_TASK_STATE_DONE; diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index d28af413b93a..01122993c943 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -753,7 +753,7 @@ static int pm8001_exec_internal_tmf_task(struct domain_device *dev, } if (task->task_status.resp == SAS_TASK_COMPLETE && - task->task_status.stat == SAM_STAT_GOOD) { + task->task_status.stat == SAS_SAM_STAT_GOOD) { res = TMF_RESP_FUNC_COMPLETE; break; } @@ -838,7 +838,7 @@ pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, } if (task->task_status.resp == SAS_TASK_COMPLETE && - task->task_status.stat == SAM_STAT_GOOD) { + task->task_status.stat == SAS_SAM_STAT_GOOD) { res = TMF_RESP_FUNC_COMPLETE; break; diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index 4e980830f9f5..57c8394cd1b5 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -1952,7 +1952,7 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) param); if (param == 0) { ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; } else { ts->resp = SAS_TASK_COMPLETE; ts->stat = SAS_PROTO_RESPONSE; @@ -2487,7 +2487,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) pm8001_dbg(pm8001_ha, IO, "IO_SUCCESS\n"); if (param == 0) { ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; /* check if response is for SEND READ LOG */ if (pm8001_dev && (pm8001_dev->id & NCQ_READ_LOG_FLAG)) { @@ -3042,7 +3042,7 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) case IO_SUCCESS: pm8001_dbg(pm8001_ha, IO, "IO_SUCCESS\n"); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; if (pm8001_dev) atomic_dec(&pm8001_dev->running_req); if (pm8001_ha->smp_exp_mode == SMP_DIRECT) { @@ -3084,17 +3084,17 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) case IO_ERROR_HW_TIMEOUT: pm8001_dbg(pm8001_ha, IO, "IO_ERROR_HW_TIMEOUT\n"); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_BUSY; + ts->stat = SAS_SAM_STAT_BUSY; break; case IO_XFER_ERROR_BREAK: pm8001_dbg(pm8001_ha, IO, "IO_XFER_ERROR_BREAK\n"); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_BUSY; + ts->stat = SAS_SAM_STAT_BUSY; break; case IO_XFER_ERROR_PHY_NOT_READY: pm8001_dbg(pm8001_ha, IO, "IO_XFER_ERROR_PHY_NOT_READY\n"); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_BUSY; + ts->stat = SAS_SAM_STAT_BUSY; break; case IO_OPEN_CNX_ERROR_PROTOCOL_NOT_SUPPORTED: pm8001_dbg(pm8001_ha, IO, @@ -4699,7 +4699,7 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha, spin_lock_irqsave(&task->task_state_lock, flags); ts->resp = SAS_TASK_COMPLETE; - ts->stat = SAM_STAT_GOOD; + ts->stat = SAS_SAM_STAT_GOOD; task->task_state_flags &= ~SAS_TASK_STATE_PENDING; task->task_state_flags &= ~SAS_TASK_AT_INITIATOR; task->task_state_flags |= SAS_TASK_STATE_DONE; diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index 9271d7a49b90..6fe125a71b60 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -474,10 +474,16 @@ enum service_response { }; enum exec_status { - /* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of - * them here to silence 'case value not in enumerated type' warnings + /* + * Values 0..0x7f are used to return the SAM_STAT_* codes. To avoid + * 'case value not in enumerated type' compiler warnings every value + * returned through the exec_status enum needs an alias with the SAS_ + * prefix here. */ - __SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION, + SAS_SAM_STAT_GOOD = SAM_STAT_GOOD, + SAS_SAM_STAT_BUSY = SAM_STAT_BUSY, + SAS_SAM_STAT_TASK_ABORTED = SAM_STAT_TASK_ABORTED, + SAS_SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION, SAS_DEV_NO_RESPONSE = 0x80, SAS_DATA_UNDERRUN, -- cgit v1.2.3 From 149d0e489e807f1e6dc265f975a793cea11ecbea Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Sun, 23 May 2021 19:54:56 -0700 Subject: scsi: core: Introduce enums for the SAM and host status codes Make it possible for the compiler to verify whether SAM and host status codes are used correctly. [mkp: resolve conflicts with Hannes' SCSI result series] Link: https://lore.kernel.org/r/20210524025457.11299-3-bvanassche@acm.org Cc: Hannes Reinecke Reviewed-by: John Garry Reviewed-by: Himanshu Madhani Signed-off-by: Bart Van Assche Signed-off-by: Martin K. Petersen --- drivers/scsi/constants.c | 2 +- drivers/target/target_core_pscsi.c | 2 +- include/scsi/scsi.h | 67 ++-------------------------------- include/scsi/scsi_proto.h | 24 +++++++------ include/scsi/scsi_status.h | 74 ++++++++++++++++++++++++++++++++++++++ 5 files changed, 91 insertions(+), 78 deletions(-) create mode 100644 include/scsi/scsi_status.h (limited to 'include') diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c index 41bcfed08260..340785536998 100644 --- a/drivers/scsi/constants.c +++ b/drivers/scsi/constants.c @@ -408,8 +408,8 @@ static const char * const hostbyte_table[]={ const char *scsi_hostbyte_string(int result) { + enum scsi_host_status hb = host_byte(result); const char *hb_string = NULL; - int hb = host_byte(result); if (hb < ARRAY_SIZE(hostbyte_table)) hb_string = hostbyte_table[hb]; diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c index e2b97cba6679..1646ba8eda11 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -1044,7 +1044,7 @@ static void pscsi_req_done(struct request *req, blk_status_t status) struct se_cmd *cmd = req->end_io_data; struct pscsi_plugin_task *pt = cmd->priv; int result = scsi_req(req)->result; - u8 scsi_status = result & 0xff; + enum sam_status scsi_status = result & 0xff; if (scsi_status != SAM_STAT_GOOD) { pr_debug("PSCSI Status Byte exception at cmd: %p CDB:" diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 358f969f368f..3e46859774c8 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -11,6 +11,7 @@ #include #include #include +#include struct scsi_cmnd; @@ -79,78 +80,14 @@ static inline int scsi_status_is_check_condition(int status) } /* - * MESSAGE CODES + * Extended message codes. */ - -#define COMMAND_COMPLETE 0x00 -#define EXTENDED_MESSAGE 0x01 #define EXTENDED_MODIFY_DATA_POINTER 0x00 #define EXTENDED_SDTR 0x01 #define EXTENDED_EXTENDED_IDENTIFY 0x02 /* SCSI-I only */ #define EXTENDED_WDTR 0x03 #define EXTENDED_PPR 0x04 #define EXTENDED_MODIFY_BIDI_DATA_PTR 0x05 -#define SAVE_POINTERS 0x02 -#define RESTORE_POINTERS 0x03 -#define DISCONNECT 0x04 -#define INITIATOR_ERROR 0x05 -#define ABORT_TASK_SET 0x06 -#define MESSAGE_REJECT 0x07 -#define NOP 0x08 -#define MSG_PARITY_ERROR 0x09 -#define LINKED_CMD_COMPLETE 0x0a -#define LINKED_FLG_CMD_COMPLETE 0x0b -#define TARGET_RESET 0x0c -#define ABORT_TASK 0x0d -#define CLEAR_TASK_SET 0x0e -#define INITIATE_RECOVERY 0x0f /* SCSI-II only */ -#define RELEASE_RECOVERY 0x10 /* SCSI-II only */ -#define TERMINATE_IO_PROC 0x11 /* SCSI-II only */ -#define CLEAR_ACA 0x16 -#define LOGICAL_UNIT_RESET 0x17 -#define SIMPLE_QUEUE_TAG 0x20 -#define HEAD_OF_QUEUE_TAG 0x21 -#define ORDERED_QUEUE_TAG 0x22 -#define IGNORE_WIDE_RESIDUE 0x23 -#define ACA 0x24 -#define QAS_REQUEST 0x55 - -/* Old SCSI2 names, don't use in new code */ -#define BUS_DEVICE_RESET TARGET_RESET -#define ABORT ABORT_TASK_SET - -/* - * Host byte codes - */ - -#define DID_OK 0x00 /* NO error */ -#define DID_NO_CONNECT 0x01 /* Couldn't connect before timeout period */ -#define DID_BUS_BUSY 0x02 /* BUS stayed busy through time out period */ -#define DID_TIME_OUT 0x03 /* TIMED OUT for other reason */ -#define DID_BAD_TARGET 0x04 /* BAD target. */ -#define DID_ABORT 0x05 /* Told to abort for some other reason */ -#define DID_PARITY 0x06 /* Parity error */ -#define DID_ERROR 0x07 /* Internal error */ -#define DID_RESET 0x08 /* Reset by somebody. */ -#define DID_BAD_INTR 0x09 /* Got an interrupt we weren't expecting. */ -#define DID_PASSTHROUGH 0x0a /* Force command past mid-layer */ -#define DID_SOFT_ERROR 0x0b /* The low level driver just wish a retry */ -#define DID_IMM_RETRY 0x0c /* Retry without decrementing retry count */ -#define DID_REQUEUE 0x0d /* Requeue command (no immediate retry) also - * without decrementing the retry count */ -#define DID_TRANSPORT_DISRUPTED 0x0e /* Transport error disrupted execution - * and the driver blocked the port to - * recover the link. Transport class will - * retry or fail IO */ -#define DID_TRANSPORT_FAILFAST 0x0f /* Transport class fastfailed the io */ -#define DID_TARGET_FAILURE 0x10 /* Permanent target failure, do not retry on - * other paths */ -#define DID_NEXUS_FAILURE 0x11 /* Permanent nexus failure, retry on other - * paths might yield different results */ -#define DID_ALLOC_FAILURE 0x12 /* Space allocation on the device failed */ -#define DID_MEDIUM_ERROR 0x13 /* Medium error */ -#define DID_TRANSPORT_MARGINAL 0x14 /* Transport marginal errors */ -#define DRIVER_OK 0x00 /* Driver status */ /* * Internal return values. diff --git a/include/scsi/scsi_proto.h b/include/scsi/scsi_proto.h index cb218a576bcf..f017843a8124 100644 --- a/include/scsi/scsi_proto.h +++ b/include/scsi/scsi_proto.h @@ -190,17 +190,19 @@ struct scsi_varlen_cdb_hdr { * SCSI Architecture Model (SAM) Status codes. Taken from SAM-3 draft * T10/1561-D Revision 4 Draft dated 7th November 2002. */ -#define SAM_STAT_GOOD 0x00 -#define SAM_STAT_CHECK_CONDITION 0x02 -#define SAM_STAT_CONDITION_MET 0x04 -#define SAM_STAT_BUSY 0x08 -#define SAM_STAT_INTERMEDIATE 0x10 -#define SAM_STAT_INTERMEDIATE_CONDITION_MET 0x14 -#define SAM_STAT_RESERVATION_CONFLICT 0x18 -#define SAM_STAT_COMMAND_TERMINATED 0x22 /* obsolete in SAM-3 */ -#define SAM_STAT_TASK_SET_FULL 0x28 -#define SAM_STAT_ACA_ACTIVE 0x30 -#define SAM_STAT_TASK_ABORTED 0x40 +enum sam_status { + SAM_STAT_GOOD = 0x00, + SAM_STAT_CHECK_CONDITION = 0x02, + SAM_STAT_CONDITION_MET = 0x04, + SAM_STAT_BUSY = 0x08, + SAM_STAT_INTERMEDIATE = 0x10, + SAM_STAT_INTERMEDIATE_CONDITION_MET = 0x14, + SAM_STAT_RESERVATION_CONFLICT = 0x18, + SAM_STAT_COMMAND_TERMINATED = 0x22, /* obsolete in SAM-3 */ + SAM_STAT_TASK_SET_FULL = 0x28, + SAM_STAT_ACA_ACTIVE = 0x30, + SAM_STAT_TASK_ABORTED = 0x40, +}; #define STATUS_MASK 0xfe /* diff --git a/include/scsi/scsi_status.h b/include/scsi/scsi_status.h new file mode 100644 index 000000000000..31d30cee1869 --- /dev/null +++ b/include/scsi/scsi_status.h @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _SCSI_SCSI_STATUS_H +#define _SCSI_SCSI_STATUS_H + +#include +#include + +/* Message codes. */ +enum scsi_msg_byte { + COMMAND_COMPLETE = 0x00, + EXTENDED_MESSAGE = 0x01, + SAVE_POINTERS = 0x02, + RESTORE_POINTERS = 0x03, + DISCONNECT = 0x04, + INITIATOR_ERROR = 0x05, + ABORT_TASK_SET = 0x06, + MESSAGE_REJECT = 0x07, + NOP = 0x08, + MSG_PARITY_ERROR = 0x09, + LINKED_CMD_COMPLETE = 0x0a, + LINKED_FLG_CMD_COMPLETE = 0x0b, + TARGET_RESET = 0x0c, + ABORT_TASK = 0x0d, + CLEAR_TASK_SET = 0x0e, + INITIATE_RECOVERY = 0x0f, /* SCSI-II only */ + RELEASE_RECOVERY = 0x10, /* SCSI-II only */ + TERMINATE_IO_PROC = 0x11, /* SCSI-II only */ + CLEAR_ACA = 0x16, + LOGICAL_UNIT_RESET = 0x17, + SIMPLE_QUEUE_TAG = 0x20, + HEAD_OF_QUEUE_TAG = 0x21, + ORDERED_QUEUE_TAG = 0x22, + IGNORE_WIDE_RESIDUE = 0x23, + ACA = 0x24, + QAS_REQUEST = 0x55, + + /* Old SCSI2 names, don't use in new code */ + BUS_DEVICE_RESET = TARGET_RESET, + ABORT = ABORT_TASK_SET, +}; + +/* Host byte codes. */ +enum scsi_host_status { + DID_OK = 0x00, /* NO error */ + DID_NO_CONNECT = 0x01, /* Couldn't connect before timeout period */ + DID_BUS_BUSY = 0x02, /* BUS stayed busy through time out period */ + DID_TIME_OUT = 0x03, /* TIMED OUT for other reason */ + DID_BAD_TARGET = 0x04, /* BAD target. */ + DID_ABORT = 0x05, /* Told to abort for some other reason */ + DID_PARITY = 0x06, /* Parity error */ + DID_ERROR = 0x07, /* Internal error */ + DID_RESET = 0x08, /* Reset by somebody. */ + DID_BAD_INTR = 0x09, /* Got an interrupt we weren't expecting. */ + DID_PASSTHROUGH = 0x0a, /* Force command past mid-layer */ + DID_SOFT_ERROR = 0x0b, /* The low level driver just wish a retry */ + DID_IMM_RETRY = 0x0c, /* Retry without decrementing retry count */ + DID_REQUEUE = 0x0d, /* Requeue command (no immediate retry) also + * without decrementing the retry count */ + DID_TRANSPORT_DISRUPTED = 0x0e, /* Transport error disrupted execution + * and the driver blocked the port to + * recover the link. Transport class will + * retry or fail IO */ + DID_TRANSPORT_FAILFAST = 0x0f, /* Transport class fastfailed the io */ + DID_TARGET_FAILURE = 0x10, /* Permanent target failure, do not retry on + * other paths */ + DID_NEXUS_FAILURE = 0x11, /* Permanent nexus failure, retry on other + * paths might yield different results */ + DID_ALLOC_FAILURE = 0x12, /* Space allocation on the device failed */ + DID_MEDIUM_ERROR = 0x13, /* Medium error */ + DID_TRANSPORT_MARGINAL = 0x14, /* Transport marginal errors */ +}; + +#endif /* _SCSI_SCSI_STATUS_H */ -- cgit v1.2.3 From 62af0ee94bfb9e626ed73b5890fc68c6e1651843 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Sun, 23 May 2021 19:54:57 -0700 Subject: scsi: core: Change the type of the second argument of scsi_host_complete_all_commands() Allow the compiler to verify the type of the second argument passed to scsi_host_complete_all_commands(). Link: https://lore.kernel.org/r/20210524025457.11299-4-bvanassche@acm.org Cc: Hannes Reinecke Cc: John Garry Reviewed-by: Himanshu Madhani Signed-off-by: Bart Van Assche Signed-off-by: Martin K. Petersen --- drivers/scsi/hosts.c | 8 +++++--- include/scsi/scsi_host.h | 2 +- 2 files changed, 6 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 624e2582c3df..1387a56981f7 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -655,10 +655,11 @@ EXPORT_SYMBOL_GPL(scsi_flush_work); static bool complete_all_cmds_iter(struct request *rq, void *data, bool rsvd) { struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); - int status = *(int *)data; + enum scsi_host_status status = *(enum scsi_host_status *)data; scsi_dma_unmap(scmd); - scmd->result = status << 16; + scmd->result = 0; + set_host_byte(scmd, status); scmd->scsi_done(scmd); return true; } @@ -673,7 +674,8 @@ static bool complete_all_cmds_iter(struct request *rq, void *data, bool rsvd) * caller to ensure that concurrent I/O submission and/or * completion is stopped when calling this function. */ -void scsi_host_complete_all_commands(struct Scsi_Host *shost, int status) +void scsi_host_complete_all_commands(struct Scsi_Host *shost, + enum scsi_host_status status) { blk_mq_tagset_busy_iter(&shost->tag_set, complete_all_cmds_iter, &status); diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index d0bf88d77f02..75363707b73f 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -764,7 +764,7 @@ extern void scsi_host_put(struct Scsi_Host *t); extern struct Scsi_Host *scsi_host_lookup(unsigned short); extern const char *scsi_host_state_name(enum scsi_host_state); extern void scsi_host_complete_all_commands(struct Scsi_Host *shost, - int status); + enum scsi_host_status status); static inline int __must_check scsi_add_host(struct Scsi_Host *host, struct device *dev) -- cgit v1.2.3 From 40445fd2c9fa427297acdfcc2c573ff10493f209 Mon Sep 17 00:00:00 2001 From: Javed Hasan Date: Thu, 3 Jun 2021 03:14:03 -0700 Subject: scsi: fc: Correct RHBA attributes length As per the FC-GS-5 specification, attribute lengths of node_name and manufacturer should in range of "4 to 64 Bytes" only. Link: https://lore.kernel.org/r/20210603101404.7841-2-jhasan@marvell.com Fixes: e721eb0616f6 ("scsi: scsi_transport_fc: Match HBA Attribute Length with HBAAPI V2.0 definitions") CC: stable@vger.kernel.org Reviewed-by: Himanshu Madhani Signed-off-by: Javed Hasan Signed-off-by: Martin K. Petersen --- include/scsi/fc/fc_ms.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/scsi/fc/fc_ms.h b/include/scsi/fc/fc_ms.h index 9e273fed0a85..800d53dc9470 100644 --- a/include/scsi/fc/fc_ms.h +++ b/include/scsi/fc/fc_ms.h @@ -63,8 +63,8 @@ enum fc_fdmi_hba_attr_type { * HBA Attribute Length */ #define FC_FDMI_HBA_ATTR_NODENAME_LEN 8 -#define FC_FDMI_HBA_ATTR_MANUFACTURER_LEN 80 -#define FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN 80 +#define FC_FDMI_HBA_ATTR_MANUFACTURER_LEN 64 +#define FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN 64 #define FC_FDMI_HBA_ATTR_MODEL_LEN 256 #define FC_FDMI_HBA_ATTR_MODELDESCR_LEN 256 #define FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN 256 -- cgit v1.2.3 From 82897fefab6811d006531cbc3a6aa03d23b8f8e3 Mon Sep 17 00:00:00 2001 From: Javed Hasan Date: Thu, 3 Jun 2021 05:16:21 -0700 Subject: scsi: libfc: Add FDMI-2 attributes Add all attributes for RHBA and RPA registration. Fallback mechanism is added between RBHA V2 and RHBA V1 attributes. In case RHBA get fails for V2 attributes we fall back to V1 attribute registration. Link: https://lore.kernel.org/r/20210603121623.10084-4-jhasan@marvell.com Reviewed-by: Himanshu Madhani Signed-off-by: Javed Hasan Signed-off-by: Martin K. Petersen --- drivers/scsi/libfc/fc_encode.h | 254 ++++++++++++++++++++++++++++++++++++++- include/scsi/scsi_transport_fc.h | 25 +++- 2 files changed, 272 insertions(+), 7 deletions(-) (limited to 'include') diff --git a/drivers/scsi/libfc/fc_encode.h b/drivers/scsi/libfc/fc_encode.h index 9ea4ceadb559..74ae7fd15d8d 100644 --- a/drivers/scsi/libfc/fc_encode.h +++ b/drivers/scsi/libfc/fc_encode.h @@ -168,9 +168,9 @@ static inline void fc_ct_ms_fill_attr(struct fc_fdmi_attr_entry *entry, { int copied; - copied = strscpy((char *)&entry->value, in, len); - if (copied > 0 && (copied + 1) < len) - memset((entry->value + copied + 1), 0, len - copied - 1); + copied = strscpy(entry->value, in, len); + if (copied > 0 && copied + 1 < len) + memset(entry->value + copied + 1, 0, len - copied - 1); } /** @@ -192,10 +192,11 @@ static inline int fc_ct_ms_fill(struct fc_lport *lport, struct fc_fdmi_attr_entry *entry; struct fs_fdmi_attrs *hba_attrs; int numattrs = 0; + struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host); switch (op) { case FC_FDMI_RHBA: - numattrs = 10; + numattrs = 11; len = sizeof(struct fc_fdmi_rhba); len -= sizeof(struct fc_fdmi_attr_entry); len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN); @@ -209,8 +210,21 @@ static inline int fc_ct_ms_fill(struct fc_lport *lport, len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN; len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN; len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN; + len += FC_FDMI_HBA_ATTR_MAXCTPAYLOAD_LEN; + + if (fc_host->fdmi_version == FDMI_V2) { + numattrs += 7; + len += FC_FDMI_HBA_ATTR_NODESYMBLNAME_LEN; + len += FC_FDMI_HBA_ATTR_VENDORSPECIFICINFO_LEN; + len += FC_FDMI_HBA_ATTR_NUMBEROFPORTS_LEN; + len += FC_FDMI_HBA_ATTR_FABRICNAME_LEN; + len += FC_FDMI_HBA_ATTR_BIOSVERSION_LEN; + len += FC_FDMI_HBA_ATTR_BIOSSTATE_LEN; + len += FC_FDMI_HBA_ATTR_VENDORIDENTIFIER_LEN; + } + ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT, - FC_FDMI_SUBTYPE); + FC_FDMI_SUBTYPE); /* HBA Identifier */ put_unaligned_be64(lport->wwpn, &ct->payload.rhba.hbaid.id); @@ -315,7 +329,7 @@ static inline int fc_ct_ms_fill(struct fc_lport *lport, &entry->type); put_unaligned_be16(len, &entry->len); fc_ct_ms_fill_attr(entry, - fc_host_optionrom_version(lport->host), + "unknown", FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN); /* Firmware Version */ @@ -343,6 +357,100 @@ static inline int fc_ct_ms_fill(struct fc_lport *lport, "%s v%s", init_utsname()->sysname, init_utsname()->release); + + /* Max CT payload */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_HBA_ATTR_MAXCTPAYLOAD_LEN; + put_unaligned_be16(FC_FDMI_HBA_ATTR_MAXCTPAYLOAD, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be32(fc_host_max_ct_payload(lport->host), + &entry->value); + + if (fc_host->fdmi_version == FDMI_V2) { + /* Node symbolic name */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_HBA_ATTR_MAXCTPAYLOAD_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_HBA_ATTR_NODESYMBLNAME_LEN; + put_unaligned_be16(FC_FDMI_HBA_ATTR_NODESYMBLNAME, + &entry->type); + put_unaligned_be16(len, &entry->len); + fc_ct_ms_fill_attr(entry, + fc_host_symbolic_name(lport->host), + FC_FDMI_HBA_ATTR_NODESYMBLNAME_LEN); + + /* Vendor specific info */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_HBA_ATTR_NODESYMBLNAME_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_HBA_ATTR_VENDORSPECIFICINFO_LEN; + put_unaligned_be16(FC_FDMI_HBA_ATTR_VENDORSPECIFICINFO, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be32(0, + &entry->value); + + /* Number of ports */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_HBA_ATTR_VENDORSPECIFICINFO_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_HBA_ATTR_NUMBEROFPORTS_LEN; + put_unaligned_be16(FC_FDMI_HBA_ATTR_NUMBEROFPORTS, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be32(fc_host_num_ports(lport->host), + &entry->value); + + /* Fabric name */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_HBA_ATTR_NUMBEROFPORTS_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_HBA_ATTR_FABRICNAME_LEN; + put_unaligned_be16(FC_FDMI_HBA_ATTR_FABRICNAME, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be64(fc_host_fabric_name(lport->host), + &entry->value); + + /* BIOS version */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_HBA_ATTR_FABRICNAME_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_HBA_ATTR_BIOSVERSION_LEN; + put_unaligned_be16(FC_FDMI_HBA_ATTR_BIOSVERSION, + &entry->type); + put_unaligned_be16(len, &entry->len); + fc_ct_ms_fill_attr(entry, + fc_host_bootbios_version(lport->host), + FC_FDMI_HBA_ATTR_BIOSVERSION_LEN); + + /* BIOS state */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_HBA_ATTR_BIOSVERSION_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_HBA_ATTR_BIOSSTATE_LEN; + put_unaligned_be16(FC_FDMI_HBA_ATTR_BIOSSTATE, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be32(fc_host_bootbios_state(lport->host), + &entry->value); + + /* Vendor identifier */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_HBA_ATTR_BIOSSTATE_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_HBA_ATTR_VENDORIDENTIFIER_LEN; + put_unaligned_be16(FC_FDMI_HBA_ATTR_VENDORIDENTIFIER, + &entry->type); + put_unaligned_be16(len, &entry->len); + fc_ct_ms_fill_attr(entry, + fc_host_vendor_identifier(lport->host), + FC_FDMI_HBA_ATTR_VENDORIDENTIFIER_LEN); + } + break; case FC_FDMI_RPA: numattrs = 6; @@ -355,6 +463,24 @@ static inline int fc_ct_ms_fill(struct fc_lport *lport, len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN; len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN; len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN; + + + if (fc_host->fdmi_version == FDMI_V2) { + numattrs += 10; + + len += FC_FDMI_PORT_ATTR_NODENAME_LEN; + len += FC_FDMI_PORT_ATTR_PORTNAME_LEN; + len += FC_FDMI_PORT_ATTR_SYMBOLICNAME_LEN; + len += FC_FDMI_PORT_ATTR_PORTTYPE_LEN; + len += FC_FDMI_PORT_ATTR_SUPPORTEDCLASSSRVC_LEN; + len += FC_FDMI_PORT_ATTR_FABRICNAME_LEN; + len += FC_FDMI_PORT_ATTR_CURRENTFC4TYPE_LEN; + len += FC_FDMI_PORT_ATTR_PORTSTATE_LEN; + len += FC_FDMI_PORT_ATTR_DISCOVEREDPORTS_LEN; + len += FC_FDMI_PORT_ATTR_PORTID_LEN; + + } + ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT, FC_FDMI_SUBTYPE); @@ -443,6 +569,122 @@ static inline int fc_ct_ms_fill(struct fc_lport *lport, fc_ct_ms_fill_attr(entry, init_utsname()->nodename, FC_FDMI_PORT_ATTR_HOSTNAME_LEN); + + + if (fc_host->fdmi_version == FDMI_V2) { + + /* Node name */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_PORT_ATTR_HOSTNAME_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_PORT_ATTR_NODENAME_LEN; + put_unaligned_be16(FC_FDMI_PORT_ATTR_NODENAME, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be64(fc_host_node_name(lport->host), + &entry->value); + + /* Port name */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_PORT_ATTR_NODENAME_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_PORT_ATTR_PORTNAME_LEN; + put_unaligned_be16(FC_FDMI_PORT_ATTR_PORTNAME, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be64(lport->wwpn, + &entry->value); + + /* Port symbolic name */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_PORT_ATTR_PORTNAME_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_PORT_ATTR_SYMBOLICNAME_LEN; + put_unaligned_be16(FC_FDMI_PORT_ATTR_SYMBOLICNAME, + &entry->type); + put_unaligned_be16(len, &entry->len); + fc_ct_ms_fill_attr(entry, + fc_host_symbolic_name(lport->host), + FC_FDMI_PORT_ATTR_SYMBOLICNAME_LEN); + + /* Port type */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_PORT_ATTR_SYMBOLICNAME_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_PORT_ATTR_PORTTYPE_LEN; + put_unaligned_be16(FC_FDMI_PORT_ATTR_PORTTYPE, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be32(fc_host_port_type(lport->host), + &entry->value); + + /* Supported class of service */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_PORT_ATTR_PORTTYPE_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_PORT_ATTR_SUPPORTEDCLASSSRVC_LEN; + put_unaligned_be16(FC_FDMI_PORT_ATTR_SUPPORTEDCLASSSRVC, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be32(fc_host_supported_classes(lport->host), + &entry->value); + + /* Port Fabric name */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_PORT_ATTR_SUPPORTEDCLASSSRVC_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_PORT_ATTR_FABRICNAME_LEN; + put_unaligned_be16(FC_FDMI_PORT_ATTR_FABRICNAME, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be64(fc_host_fabric_name(lport->host), + &entry->value); + + /* Port active FC-4 */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_PORT_ATTR_FABRICNAME_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_PORT_ATTR_CURRENTFC4TYPE_LEN; + put_unaligned_be16(FC_FDMI_PORT_ATTR_CURRENTFC4TYPE, + &entry->type); + put_unaligned_be16(len, &entry->len); + memcpy(&entry->value, fc_host_active_fc4s(lport->host), + FC_FDMI_PORT_ATTR_CURRENTFC4TYPE_LEN); + + /* Port state */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_PORT_ATTR_CURRENTFC4TYPE_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_PORT_ATTR_PORTSTATE_LEN; + put_unaligned_be16(FC_FDMI_PORT_ATTR_PORTSTATE, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be32(fc_host_port_state(lport->host), + &entry->value); + + /* Discovered ports */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_PORT_ATTR_PORTSTATE_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_PORT_ATTR_DISCOVEREDPORTS_LEN; + put_unaligned_be16(FC_FDMI_PORT_ATTR_DISCOVEREDPORTS, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be32(fc_host_num_discovered_ports(lport->host), + &entry->value); + + /* Port ID */ + entry = (struct fc_fdmi_attr_entry *)((char *)entry->value + + FC_FDMI_PORT_ATTR_DISCOVEREDPORTS_LEN); + len = FC_FDMI_ATTR_ENTRY_HEADER_LEN; + len += FC_FDMI_PORT_ATTR_PORTID_LEN; + put_unaligned_be16(FC_FDMI_PORT_ATTR_PORTID, + &entry->type); + put_unaligned_be16(len, &entry->len); + put_unaligned_be32(fc_host_port_id(lport->host), + &entry->value); + } + break; case FC_FDMI_DPRT: len = sizeof(struct fc_fdmi_dprt); diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h index 14214ee121ad..e80a7c542c88 100644 --- a/include/scsi/scsi_transport_fc.h +++ b/include/scsi/scsi_transport_fc.h @@ -517,10 +517,11 @@ enum fc_host_event_code { * managed by the transport w/o driver interaction. */ +#define FC_VENDOR_IDENTIFIER 8 #define FC_FC4_LIST_SIZE 32 #define FC_SYMBOLIC_NAME_SIZE 256 #define FC_VERSION_STRING_SIZE 64 -#define FC_SERIAL_NUMBER_SIZE 80 +#define FC_SERIAL_NUMBER_SIZE 64 struct fc_host_attrs { /* Fixed Attributes */ @@ -532,6 +533,10 @@ struct fc_host_attrs { u32 supported_speeds; u32 maxframe_size; u16 max_npiv_vports; + u32 max_ct_payload; + u32 num_ports; + u32 num_discovered_ports; + u32 bootbios_state; char serial_number[FC_SERIAL_NUMBER_SIZE]; char manufacturer[FC_SERIAL_NUMBER_SIZE]; char model[FC_SYMBOLIC_NAME_SIZE]; @@ -540,6 +545,9 @@ struct fc_host_attrs { char driver_version[FC_VERSION_STRING_SIZE]; char firmware_version[FC_VERSION_STRING_SIZE]; char optionrom_version[FC_VERSION_STRING_SIZE]; + char vendor_identifier[FC_VENDOR_IDENTIFIER]; + char bootbios_version[FC_SYMBOLIC_NAME_SIZE]; + /* Dynamic Attributes */ u32 port_id; @@ -573,6 +581,9 @@ struct fc_host_attrs { /* bsg support */ struct request_queue *rqst_q; + + /* FDMI support version*/ + u8 fdmi_version; }; #define shost_to_fc_host(x) \ @@ -652,6 +663,18 @@ struct fc_host_attrs { (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q) #define fc_host_dev_loss_tmo(x) \ (((struct fc_host_attrs *)(x)->shost_data)->dev_loss_tmo) +#define fc_host_max_ct_payload(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->max_ct_payload) +#define fc_host_vendor_identifier(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->vendor_identifier) +#define fc_host_num_discovered_ports(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->num_discovered_ports) +#define fc_host_num_ports(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->num_ports) +#define fc_host_bootbios_version(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->bootbios_version) +#define fc_host_bootbios_state(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->bootbios_state) /* The functions by which the transport class and the driver communicate */ struct fc_function_template { -- cgit v1.2.3 From 49d3e5996155a3067782748b0c4edf0309e951b6 Mon Sep 17 00:00:00 2001 From: Javed Hasan Date: Thu, 3 Jun 2021 05:16:23 -0700 Subject: scsi: fc: FDMI enhancement MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Added RHBA and RPA attributes type and length. As per FC_GC_7 document section "Table 400 – Attribute Entry Types and associated Values" ASCII type attributes length can be vary from "4 to 256 byte". If we keep all RHBA ASCII attributes length 256 then total length is going upto 2750, which is far more than 2048 (max frame size). In libfc we do have logic to split FCP commands but not for CT commands. Practically all version/names get covered with in 64 bytes except OS name, for that we need 128 bytes. Hence length of all RBHA ASCII attributes is reduced to 64 bytes and 128 bytes in case of OS name. RPA attributes total length is within frame size. Link: https://lore.kernel.org/r/20210603121623.10084-6-jhasan@marvell.com Reviewed-by: Himanshu Madhani Signed-off-by: Javed Hasan Signed-off-by: Martin K. Petersen --- include/scsi/fc/fc_ms.h | 55 ++++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 48 insertions(+), 7 deletions(-) (limited to 'include') diff --git a/include/scsi/fc/fc_ms.h b/include/scsi/fc/fc_ms.h index 800d53dc9470..00191695233a 100644 --- a/include/scsi/fc/fc_ms.h +++ b/include/scsi/fc/fc_ms.h @@ -24,6 +24,12 @@ */ #define FC_FDMI_SUBTYPE 0x10 /* fs_ct_hdr.ct_fs_subtype */ +/* + * Management server FDMI specifications. + */ +#define FDMI_V1 1 /* FDMI version 1 specifications */ +#define FDMI_V2 2 /* FDMI version 2 specifications */ + /* * Management server FDMI Requests. */ @@ -57,6 +63,13 @@ enum fc_fdmi_hba_attr_type { FC_FDMI_HBA_ATTR_FIRMWAREVERSION = 0x0009, FC_FDMI_HBA_ATTR_OSNAMEVERSION = 0x000A, FC_FDMI_HBA_ATTR_MAXCTPAYLOAD = 0x000B, + FC_FDMI_HBA_ATTR_NODESYMBLNAME = 0x000C, + FC_FDMI_HBA_ATTR_VENDORSPECIFICINFO = 0x000D, + FC_FDMI_HBA_ATTR_NUMBEROFPORTS = 0x000E, + FC_FDMI_HBA_ATTR_FABRICNAME = 0x000F, + FC_FDMI_HBA_ATTR_BIOSVERSION = 0x0010, + FC_FDMI_HBA_ATTR_BIOSSTATE = 0x0011, + FC_FDMI_HBA_ATTR_VENDORIDENTIFIER = 0x00E0, }; /* @@ -65,14 +78,21 @@ enum fc_fdmi_hba_attr_type { #define FC_FDMI_HBA_ATTR_NODENAME_LEN 8 #define FC_FDMI_HBA_ATTR_MANUFACTURER_LEN 64 #define FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN 64 -#define FC_FDMI_HBA_ATTR_MODEL_LEN 256 -#define FC_FDMI_HBA_ATTR_MODELDESCR_LEN 256 -#define FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN 256 -#define FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN 256 -#define FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN 256 -#define FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN 256 -#define FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN 256 +#define FC_FDMI_HBA_ATTR_MODEL_LEN 64 +#define FC_FDMI_HBA_ATTR_MODELDESCR_LEN 64 +#define FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN 64 +#define FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN 64 +#define FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN 64 +#define FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN 64 +#define FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN 128 #define FC_FDMI_HBA_ATTR_MAXCTPAYLOAD_LEN 4 +#define FC_FDMI_HBA_ATTR_NODESYMBLNAME_LEN 64 +#define FC_FDMI_HBA_ATTR_VENDORSPECIFICINFO_LEN 4 +#define FC_FDMI_HBA_ATTR_NUMBEROFPORTS_LEN 4 +#define FC_FDMI_HBA_ATTR_FABRICNAME_LEN 8 +#define FC_FDMI_HBA_ATTR_BIOSVERSION_LEN 64 +#define FC_FDMI_HBA_ATTR_BIOSSTATE_LEN 4 +#define FC_FDMI_HBA_ATTR_VENDORIDENTIFIER_LEN 8 /* * Port Attribute Type @@ -84,6 +104,16 @@ enum fc_fdmi_port_attr_type { FC_FDMI_PORT_ATTR_MAXFRAMESIZE = 0x0004, FC_FDMI_PORT_ATTR_OSDEVICENAME = 0x0005, FC_FDMI_PORT_ATTR_HOSTNAME = 0x0006, + FC_FDMI_PORT_ATTR_NODENAME = 0x0007, + FC_FDMI_PORT_ATTR_PORTNAME = 0x0008, + FC_FDMI_PORT_ATTR_SYMBOLICNAME = 0x0009, + FC_FDMI_PORT_ATTR_PORTTYPE = 0x000A, + FC_FDMI_PORT_ATTR_SUPPORTEDCLASSSRVC = 0x000B, + FC_FDMI_PORT_ATTR_FABRICNAME = 0x000C, + FC_FDMI_PORT_ATTR_CURRENTFC4TYPE = 0x000D, + FC_FDMI_PORT_ATTR_PORTSTATE = 0x101, + FC_FDMI_PORT_ATTR_DISCOVEREDPORTS = 0x102, + FC_FDMI_PORT_ATTR_PORTID = 0x103, }; /* @@ -95,6 +125,17 @@ enum fc_fdmi_port_attr_type { #define FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN 4 #define FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN 256 #define FC_FDMI_PORT_ATTR_HOSTNAME_LEN 256 +#define FC_FDMI_PORT_ATTR_NODENAME_LEN 8 +#define FC_FDMI_PORT_ATTR_PORTNAME_LEN 8 +#define FC_FDMI_PORT_ATTR_SYMBOLICNAME_LEN 256 +#define FC_FDMI_PORT_ATTR_PORTTYPE_LEN 4 +#define FC_FDMI_PORT_ATTR_SUPPORTEDCLASSSRVC_LEN 4 +#define FC_FDMI_PORT_ATTR_FABRICNAME_LEN 8 +#define FC_FDMI_PORT_ATTR_CURRENTFC4TYPE_LEN 32 +#define FC_FDMI_PORT_ATTR_PORTSTATE_LEN 4 +#define FC_FDMI_PORT_ATTR_DISCOVEREDPORTS_LEN 4 +#define FC_FDMI_PORT_ATTR_PORTID_LEN 4 + /* * HBA Attribute ID -- cgit v1.2.3 From 6b658c4863c15936872a93c9ee879043bf6393c9 Mon Sep 17 00:00:00 2001 From: Muneendra Kumar Date: Tue, 8 Jun 2021 10:05:44 +0530 Subject: scsi: cgroup: Add cgroup_get_from_id() Add a new function, cgroup_get_from_id(), to retrieve the cgroup associated with a cgroup id. Also export the function cgroup_get_e_css() as this is needed in blk-cgroup.h. Link: https://lore.kernel.org/r/20210608043556.274139-2-muneendra.kumar@broadcom.com Reviewed-by: Himanshu Madhani Reviewed-by: Hannes Reinecke Acked-by: Tejun Heo Signed-off-by: Muneendra Kumar Signed-off-by: Martin K. Petersen --- include/linux/cgroup.h | 6 ++++++ kernel/cgroup/cgroup.c | 26 ++++++++++++++++++++++++++ 2 files changed, 32 insertions(+) (limited to 'include') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 4f2f79de083e..d2eace88d9d1 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -696,6 +696,7 @@ static inline void cgroup_kthread_ready(void) } void cgroup_path_from_kernfs_id(u64 id, char *buf, size_t buflen); +struct cgroup *cgroup_get_from_id(u64 id); #else /* !CONFIG_CGROUPS */ struct cgroup_subsys_state; @@ -743,6 +744,11 @@ static inline bool task_under_cgroup_hierarchy(struct task_struct *task, static inline void cgroup_path_from_kernfs_id(u64 id, char *buf, size_t buflen) {} + +static inline struct cgroup *cgroup_get_from_id(u64 id) +{ + return NULL; +} #endif /* !CONFIG_CGROUPS */ #ifdef CONFIG_CGROUPS diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index e049edd66776..692779d3cdfa 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -577,6 +577,7 @@ out_unlock: rcu_read_unlock(); return css; } +EXPORT_SYMBOL_GPL(cgroup_get_e_css); static void cgroup_get_live(struct cgroup *cgrp) { @@ -5776,6 +5777,31 @@ void cgroup_path_from_kernfs_id(u64 id, char *buf, size_t buflen) kernfs_put(kn); } +/* + * cgroup_get_from_id : get the cgroup associated with cgroup id + * @id: cgroup id + * On success return the cgrp, on failure return NULL + */ +struct cgroup *cgroup_get_from_id(u64 id) +{ + struct kernfs_node *kn; + struct cgroup *cgrp = NULL; + + mutex_lock(&cgroup_mutex); + kn = kernfs_find_and_get_node_by_id(cgrp_dfl_root.kf_root, id); + if (!kn) + goto out_unlock; + + cgrp = kn->priv; + if (cgroup_is_dead(cgrp) || !cgroup_tryget(cgrp)) + cgrp = NULL; + kernfs_put(kn); +out_unlock: + mutex_unlock(&cgroup_mutex); + return cgrp; +} +EXPORT_SYMBOL_GPL(cgroup_get_from_id); + /* * proc_cgroup_show() * - Print task's cgroup paths into seq_file, one line for each hierarchy -- cgit v1.2.3 From d2bcbeab4200665b694ec4f92a7a2fd58b70b1e8 Mon Sep 17 00:00:00 2001 From: Muneendra Kumar Date: Tue, 8 Jun 2021 10:05:45 +0530 Subject: scsi: blkcg: Add app identifier support for blkcg Add a unique application identifier (i.e fc_app_id member) in blkcg. This allows identification of traffic belonging to an specific both on the host and in the fabric infrastructure. As an example, this allows the storage stack to uniquely identify traffic belong to particular virtual machine. Link: https://lore.kernel.org/r/20210608043556.274139-3-muneendra.kumar@broadcom.com Reviewed-by: Himanshu Madhani Reviewed-by: Hannes Reinecke Acked-by: Tejun Heo Signed-off-by: Muneendra Kumar Signed-off-by: Martin K. Petersen --- block/Kconfig | 9 +++++++ drivers/scsi/Kconfig | 13 ++++++++++ include/linux/blk-cgroup.h | 63 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 85 insertions(+) (limited to 'include') diff --git a/block/Kconfig b/block/Kconfig index a2297edfdde8..03886d105301 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -144,6 +144,15 @@ config BLK_CGROUP_IOLATENCY Note, this is an experimental interface and could be changed someday. +config BLK_CGROUP_FC_APPID + bool "Enable support to track FC I/O Traffic across cgroup applications" + depends on BLK_CGROUP=y + help + Enabling this option enables the support to track FC I/O traffic across + cgroup applications. It enables the Fabric and the storage targets to + identify, monitor, and handle FC traffic based on VM tags by inserting + application specific identification into the FC frame. + config BLK_CGROUP_IOCOST bool "Enable support for cost model based cgroup IO controller" depends on BLK_CGROUP=y diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 23e015af0e93..cd5fbd9d46ba 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -235,6 +235,19 @@ config SCSI_FC_ATTRS each attached FiberChannel device to sysfs, say Y. Otherwise, say N. +config FC_APPID + bool "Enable support to track FC I/O Traffic" + depends on BLOCK && BLK_CGROUP + depends on SCSI + select BLK_CGROUP_FC_APPID + default y + help + If you say Y here, it enables the support to track + FC I/O traffic over fabric. It enables the Fabric and the + storage targets to identify, monitor, and handle FC traffic + based on VM tags by inserting application specific + identification into the FC frame. + config SCSI_ISCSI_ATTRS tristate "iSCSI Transport Attributes" depends on SCSI && NET diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h index b9f3c246c3c9..37048438872c 100644 --- a/include/linux/blk-cgroup.h +++ b/include/linux/blk-cgroup.h @@ -30,6 +30,8 @@ /* Max limits for throttle policy */ #define THROTL_IOPS_MAX UINT_MAX +#define FC_APPID_LEN 129 + #ifdef CONFIG_BLK_CGROUP @@ -55,6 +57,9 @@ struct blkcg { struct blkcg_policy_data *cpd[BLKCG_MAX_POLS]; struct list_head all_blkcgs_node; +#ifdef CONFIG_BLK_CGROUP_FC_APPID + char fc_app_id[FC_APPID_LEN]; +#endif #ifdef CONFIG_CGROUP_WRITEBACK struct list_head cgwb_list; #endif @@ -660,4 +665,62 @@ static inline void blk_cgroup_bio_start(struct bio *bio) { } #endif /* CONFIG_BLOCK */ #endif /* CONFIG_BLK_CGROUP */ + +#ifdef CONFIG_BLK_CGROUP_FC_APPID +/* + * Sets the fc_app_id field associted to blkcg + * @app_id: application identifier + * @cgrp_id: cgroup id + * @app_id_len: size of application identifier + */ +static inline int blkcg_set_fc_appid(char *app_id, u64 cgrp_id, size_t app_id_len) +{ + struct cgroup *cgrp; + struct cgroup_subsys_state *css; + struct blkcg *blkcg; + int ret = 0; + + if (app_id_len > FC_APPID_LEN) + return -EINVAL; + + cgrp = cgroup_get_from_id(cgrp_id); + if (!cgrp) + return -ENOENT; + css = cgroup_get_e_css(cgrp, &io_cgrp_subsys); + if (!css) { + ret = -ENOENT; + goto out_cgrp_put; + } + blkcg = css_to_blkcg(css); + /* + * There is a slight race condition on setting the appid. + * Worst case an I/O may not find the right id. + * This is no different from the I/O we let pass while obtaining + * the vmid from the fabric. + * Adding the overhead of a lock is not necessary. + */ + strlcpy(blkcg->fc_app_id, app_id, app_id_len); + css_put(css); +out_cgrp_put: + cgroup_put(cgrp); + return ret; +} + +/** + * blkcg_get_fc_appid - get the fc app identifier associated with a bio + * @bio: target bio + * + * On success return the fc_app_id, on failure return NULL + */ +static inline char *blkcg_get_fc_appid(struct bio *bio) +{ + if (bio && bio->bi_blkg && + (bio->bi_blkg->blkcg->fc_app_id[0] != '\0')) + return bio->bi_blkg->blkcg->fc_app_id; + return NULL; +} +#else +static inline int blkcg_set_fc_appid(char *buf, u64 id, size_t len) { return -EINVAL; } +static inline char *blkcg_get_fc_appid(struct bio *bio) { return NULL; } +#endif /*CONFIG_BLK_CGROUP_FC_APPID*/ #endif /* _BLK_CGROUP_H */ -- cgit v1.2.3