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2023-03-11scsi: qla2xxx: Fix erroneous link downQuinn Tran1-2/+5
commit 3fbc74feb642deb688cc97f76d40b7287ddd4cb1 upstream. If after an adapter reset the appearance of link is not recovered, the devices are not rediscovered. This is result of a race condition between adapter reset (abort_isp) and the topology scan. During adapter reset, the ABORT_ISP_ACTIVE flag is set. Topology scan usually occurred after adapter reset. In this case, the topology scan came earlier than usual where it ran into problem due to ABORT_ISP_ACTIVE flag was still set. kernel: qla2xxx [0000:13:00.0]-1005:1: Cmd 0x6a aborted with timeout since ISP Abort is pending kernel: qla2xxx [0000:13:00.0]-28a0:1: MBX_GET_PORT_NAME failed, No FL Port. kernel: qla2xxx [0000:13:00.0]-286b:1: qla2x00_configure_loop: exiting normally. local port wwpn 51402ec0123d9a80 id 012300) kernel: qla2xxx [0000:13:00.0]-8017:1: ADAPTER RESET SUCCEEDED nexus=1:0:15. Allow adapter reset to complete before any scan can start. Cc: stable@vger.kernel.org Signed-off-by: Quinn Tran <qutran@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-11scsi: qla2xxx: Fix link failure in NPIV environmentQuinn Tran1-1/+1
commit b1ae65c082f74536ec292b15766f2846f0238373 upstream. User experienced symptoms of adapter failure in NPIV environment. NPIV hosts were allowed to trigger chip reset back to back due to NPIV link state being slow to come online. Fix link failure in NPIV environment by removing NPIV host from directly being able to perform chip reset. kernel: qla2xxx [0000:04:00.1]-6009:261: Loop down - aborting ISP. kernel: qla2xxx [0000:04:00.1]-6009:262: Loop down - aborting ISP. kernel: qla2xxx [0000:04:00.1]-6009:281: Loop down - aborting ISP. kernel: qla2xxx [0000:04:00.1]-6009:285: Loop down - aborting ISP Fixes: 0d6e61bc6a4f ("[SCSI] qla2xxx: Correct various NPIV issues.") Cc: stable@vger.kernel.org Signed-off-by: Quinn Tran <qutran@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26scsi: qla2xxx: Turn off target reset during issue_lipQuinn Tran1-25/+2
[ Upstream commit 0b7a9fd934a68ebfc1019811b7bdc1742072ad7b ] When user uses issue_lip to do link bounce, driver sends additional target reset to remote device before resetting the link. The target reset would affect other paths with active I/Os. This patch will remove the unnecessary target reset. Link: https://lore.kernel.org/r/20211026115412.27691-4-njavali@marvell.com Fixes: 5854771e314e ("[SCSI] qla2xxx: Add ISPFX00 specific bus reset routine") Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Quinn Tran <qutran@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-25scsi: qla2xxx: Fix warning after FC target resetViacheslav Dubeyko1-0/+1
[ Upstream commit f839544ccff60cbe534282aac68858fc3fb278ca ] Currently, FC target reset finishes with the warning message: [84010.596893] ------------[ cut here ]------------ [84010.596917] WARNING: CPU: 238 PID: 279973 at ../drivers/scsi/qla2xxx/qla_target.c:6644 qlt_enable_vha+0x1d0/0x260 [qla2xxx] [84010.596918] Modules linked in: vrf af_packet 8021q garp mrp stp llc netlink_diag target_tatlin_tblock(OEX) dm_ec(OEX) ttln_rdma(OEX) dm_frontend(OEX) nvme_rdma nvmet tcm_qla2xxx iscsi_target_mod target_core_mod at24 nvmem_core pnv_php ipmi_watchdog ipmi_ssif vmx_crypto gf128mul crct10dif_vpmsum qla2xxx rpcrdma nvme_fc powernv_flash(X) nvme_fabrics uio_pdrv_genirq mtd rtc_opal(X) ibmpowernv(X) opal_prd(X) uio scsi_transport_fc i2c_opal(X) ses enclosure ipmi_poweroff ast i2c_algo_bit ttm bmc_mcu(OEX) drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm drm_panel_orientation_quirks agpgart nfsd auth_rpcgss nfs_acl ipmi_powernv(X) lockd ipmi_devintf ipmi_msghandler grace dummy ext4 crc16 jbd2 mbcache sd_mod rdma_ucm ib_iser rdma_cm ib_umad iw_cm ib_ipoib libiscsi scsi_transport_iscsi ib_cm [84010.596975] configfs mlx5_ib ib_uverbs ib_core mlx5_core crc32c_vpmsum xhci_pci xhci_hcd mpt3sas(OEX) tg3 usbcore mlxfw tls raid_class libphy scsi_transport_sas devlink ptp pps_core nvme nvme_core sunrpc dm_mirror dm_region_hash dm_log sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua scsi_mod autofs4 [84010.597001] Supported: Yes, External [84010.597004] CPU: 238 PID: 279973 Comm: bash Tainted: G OE 4.12.14-197.29-default #1 SLE15-SP1 [84010.597006] task: c000000a104c0000 task.stack: c000000b52188000 [84010.597007] NIP: d00000001ffd7f78 LR: d00000001ffd7f6c CTR: c0000000001676c0 [84010.597008] REGS: c000000b5218b910 TRAP: 0700 Tainted: G OE (4.12.14-197.29-default) [84010.597008] MSR: 900000010282b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE,TM[E]> [84010.597015] CR: 48242424 XER: 00000000 [84010.597016] CFAR: d00000001ff45d08 SOFTE: 1 GPR00: d00000001ffd7f6c c000000b5218bb90 d00000002001b228 0000000000000102 GPR04: 0000000000000001 0000000000000001 00013d91ed0a5e2d 0000000000000000 GPR08: c000000007793300 0000000000000000 0000000000000000 c000000a086e7818 GPR12: 0000000000002200 c000000007793300 0000000000000000 000000012bc937c0 GPR16: 000000012bbf7ed0 0000000000000000 000000012bc3dd10 0000000000000000 GPR20: 000000012bc4db28 0000010036442810 000000012bc97828 000000012bc96c70 GPR24: 00000100365b1550 0000000000000000 00000100363f3d80 c000000be20d3080 GPR28: c000000bda7eae00 c000000be20db7e8 c000000be20d3778 c000000be20db7e8 [84010.597042] NIP [d00000001ffd7f78] qlt_enable_vha+0x1d0/0x260 [qla2xxx] [84010.597051] LR [d00000001ffd7f6c] qlt_enable_vha+0x1c4/0x260 [qla2xxx] [84010.597051] Call Trace: [84010.597061] [c000000b5218bb90] [d00000001ffd7f6c] qlt_enable_vha+0x1c4/0x260 [qla2xxx] (unreliable) [84010.597064] [c000000b5218bc20] [d000000009820b6c] tcm_qla2xxx_tpg_enable_store+0xc4/0x130 [tcm_qla2xxx] [84010.597067] [c000000b5218bcb0] [d0000000185d0e68] configfs_write_file+0xd0/0x190 [configfs] [84010.597072] [c000000b5218bd00] [c0000000003d0edc] __vfs_write+0x3c/0x1e0 [84010.597074] [c000000b5218bd90] [c0000000003d2ea8] vfs_write+0xd8/0x220 [84010.597076] [c000000b5218bde0] [c0000000003d4ddc] SyS_write+0x6c/0x110 [84010.597079] [c000000b5218be30] [c00000000000b188] system_call+0x3c/0x130 [84010.597080] Instruction dump: [84010.597082] 7d0050a8 7d084b78 7d0051ad 40c2fff4 7fa3eb78 4bf73965 60000000 7fa3eb78 [84010.597086] 4bf6dcd9 60000000 2fa30000 419eff40 <0fe00000> 4bffff38 e95f0058 a12a0180 [84010.597090] ---[ end trace e32abaf6e6fee826 ]--- To reproduce: echo 0x7fffffff > /sys/module/qla2xxx/parameters/logging modprobe target_core_mod modprobe tcm_qla2xxx mkdir /sys/kernel/config/target/qla2xxx mkdir /sys/kernel/config/target/qla2xxx/<port-name> mkdir /sys/kernel/config/target/qla2xxx/<port-name>/tpgt_1 echo 1 > /sys/kernel/config/target/qla2xxx/<port-name>/tpgt_1/enable echo 0 > /sys/kernel/config/target/qla2xxx/<port-name>/tpgt_1/enable echo 1 > /sys/kernel/config/target/qla2xxx/<port-name>/tpgt_1/enable SYSTEM START kernel: pid 327:drivers/scsi/qla2xxx/qla_init.c:2174 qla2x00_initialize_adapter(): vha->flags.online 0x0 <...> kernel: pid 327:drivers/scsi/qla2xxx/qla_os.c:3444 qla2x00_probe_one(): vha->flags.online 0x1 echo 1 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:86:a6:2a/tpgt_1/enable kernel: pid 348:drivers/scsi/qla2xxx/qla_init.c:6641 qla2x00_abort_isp_cleanup(): vha->flags.online 0x0, ISP_ABORT_NEEDED 0x0 <...> kernel: pid 348:drivers/scsi/qla2xxx/qla_init.c:6998 qla2x00_restart_isp(): vha->flags.online 0x0 echo 0 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:86:a6:2a/tpgt_1/enable kernel: pid 348:drivers/scsi/qla2xxx/qla_init.c:6641 qla2x00_abort_isp_cleanup(): vha->flags.online 0x0, ISP_ABORT_NEEDED 0x0 <...> kernel: pid 1404:drivers/scsi/qla2xxx/qla_os.c:1107 qla2x00_wait_for_hba_online(): base_vha->flags.online 0x0 echo 1 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:86:a6:2a/tpgt_1/enable kernel: pid 1404:drivers/scsi/qla2xxx/qla_os.c:1107 qla2x00_wait_for_hba_online(): base_vha->flags.online 0x0 kernel: -----------[ cut here ]----------- kernel: WARNING: CPU: 1 PID: 1404 at drivers/scsi/qla2xxx/qla_target.c:6654 qlt_enable_vha+0x1e0/0x280 [qla2xxx] The issue happens because no real ISP reset is executed. The qla2x00_abort_isp(scsi_qla_host_t *vha) function expects that vha->flags.online will be not zero for ISP reset procedure. This patch sets vha->flags.online to 1 before calling ->abort_isp() for starting the ISP reset. Link: https://lore.kernel.org/r/1d7b21bf9f7676643239eb3d60eaca7cfa505cf0.camel@yadro.com Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com> Signed-off-by: Viacheslav Dubeyko <v.dubeiko@yadro.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-28scsi: qla2xxx: fix a potential NULL pointer dereferenceAllen Pais1-0/+4
commit 35a79a63517981a8aea395497c548776347deda8 upstream. alloc_workqueue is not checked for errors and as a result a potential NULL dereference could occur. Link: https://lore.kernel.org/r/1568824618-4366-1-git-send-email-allen.pais@oracle.com Signed-off-by: Allen Pais <allen.pais@oracle.com> Reviewed-by: Martin Wilck <mwilck@suse.com> Acked-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> [Ajay: Modified to apply on v4.14.y] Signed-off-by: Ajay Kaher <akaher@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-27scsi: qla2xxx: Unregister chrdev if module initialization failsBart Van Assche1-13/+21
[ Upstream commit c794d24ec9eb6658909955772e70f34bef5b5b91 ] If module initialization fails after the character device has been registered, unregister the character device. Additionally, avoid duplicating error path code. Cc: Himanshu Madhani <hmadhani@marvell.com> Cc: Giridhar Malavali <giridhar.malavali@qlogic.com> Fixes: 6a03b4cd78f3 ("[SCSI] qla2xxx: Add char device to increase driver use count") # v2.6.35. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-20scsi: qla2xxx: Defer chip reset until target mode is enabledQuinn Tran1-7/+21
[ Upstream commit 93eca6135183f7a71e36acd47655a085ed11bcdc ] For target mode, any chip reset triggered before target mode is enabled will be held off until user is ready to enable. This prevents the chip from starting or running before it is intended. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-12scsi: qla2xxx: stop timer in shutdown pathNicholas Piggin1-0/+4
[ Upstream commit d3566abb1a1e7772116e4d50fb6a58d19c9802e5 ] In shutdown/reboot paths, the timer is not stopped: qla2x00_shutdown pci_device_shutdown device_shutdown kernel_restart_prepare kernel_restart sys_reboot This causes lockups (on powerpc) when firmware config space access calls are interrupted by smp_send_stop later in reboot. Fixes: e30d1756480dc ("[SCSI] qla2xxx: Addition of shutdown callback handler.") Link: https://lore.kernel.org/r/20191024063804.14538-1-npiggin@gmail.com Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Acked-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2018-08-09scsi: qla2xxx: Fix ISP recovery on unloadQuinn Tran1-2/+3
commit b08abbd9f5996309f021684f9ca74da30dcca36a upstream. During unload process, the chip can encounter problem where a FW dump would be captured. For this case, the full reset sequence will be skip to bring the chip back to full operational state. Fixes: e315cd28b9ef ("[SCSI] qla2xxx: Code changes for qla data structure refactoring") Cc: <stable@vger.kernel.org> Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-09scsi: qla2xxx: Fix NPIV deletion by calling wait_for_sess_deletionQuinn Tran1-1/+1
commit efa93f48fa9d423fda166bc3b6c0cbb09682492e upstream. Add wait for session deletion to finish before freeing an NPIV scsi host. Fixes: 726b85487067 ("qla2xxx: Add framework for async fabric discovery") Cc: <stable@vger.kernel.org> Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-25scsi: qla2xxx: Fix memory corruption during hba reset testQuinn Tran1-0/+2
[ Upstream commit 2ce87cc5b269510de9ca1185ca8a6e10ec78c069 ] This patch fixes memory corrpution while performing HBA Reset test. Following stack trace is seen: [ 466.397219] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [ 466.433669] IP: [<ffffffffc06f5dd0>] qlt_free_session_done+0x260/0x5f0 [qla2xxx] [ 466.467731] PGD 0 [ 466.476718] Oops: 0000 [#1] SMP Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-19scsi: qla2xxx: Fix small memory leak in qla2x00_probe_one on probe failureBill Kuzeja1-23/+21
commit 6d6340672ba3a99c4cf7af79c2edf7aa25595c84 upstream. The code that fixes the crashes in the following commit introduced a small memory leak: commit 6a2cf8d3663e ("scsi: qla2xxx: Fix crashes in qla2x00_probe_one on probe failure") Fixing this requires a bit of reworking, which I've explained. Also provide some code cleanup. There is a small window in qla2x00_probe_one where if qla2x00_alloc_queues fails, we end up never freeing req and rsp and leak 0xc0 and 0xc8 bytes respectively (the sizes of req and rsp). I originally put in checks to test for this condition which were based on the incorrect assumption that if ha->rsp_q_map and ha->req_q_map were allocated, then rsp and req were allocated as well. This is incorrect. There is a window between these allocations: ret = qla2x00_mem_alloc(ha, req_length, rsp_length, &req, &rsp); goto probe_hw_failed; [if successful, both rsp and req allocated] base_vha = qla2x00_create_host(sht, ha); goto probe_hw_failed; ret = qla2x00_request_irqs(ha, rsp); goto probe_failed; if (qla2x00_alloc_queues(ha, req, rsp)) { goto probe_failed; [if successful, now ha->rsp_q_map and ha->req_q_map allocated] To simplify this, we should just set req and rsp to NULL after we free them. Sounds simple enough? The problem is that req and rsp are pointers defined in the qla2x00_probe_one and they are not always passed by reference to the routines that free them. Here are paths which can free req and rsp: PATH 1: qla2x00_probe_one ret = qla2x00_mem_alloc(ha, req_length, rsp_length, &req, &rsp); [req and rsp are passed by reference, but if this fails, we currently do not NULL out req and rsp. Easily fixed] PATH 2: qla2x00_probe_one failing in qla2x00_request_irqs or qla2x00_alloc_queues probe_failed: qla2x00_free_device(base_vha); qla2x00_free_req_que(ha, req) qla2x00_free_rsp_que(ha, rsp) PATH 3: qla2x00_probe_one: failing in qla2x00_mem_alloc or qla2x00_create_host probe_hw_failed: qla2x00_free_req_que(ha, req) qla2x00_free_rsp_que(ha, rsp) PATH 1: This should currently work, but it doesn't because rsp and rsp are not set to NULL in qla2x00_mem_alloc. Easily remedied. PATH 2: req and rsp aren't passed in at all to qla2x00_free_device but are derived from ha->req_q_map[0] and ha->rsp_q_map[0]. These are only set up if qla2x00_alloc_queues succeeds. In qla2x00_free_queues, we are protected from crashing if these don't exist because req_qid_map and rsp_qid_map are only set on their allocation. We are guarded in this way: for (cnt = 0; cnt < ha->max_req_queues; cnt++) { if (!test_bit(cnt, ha->req_qid_map)) continue; PATH 3: This works. We haven't freed req or rsp yet (or they were never allocated if qla2x00_mem_alloc failed), so we'll attempt to free them here. To summarize, there are a few small changes to make this work correctly and (and for some cleanup): 1) (For PATH 1) Set *rsp and *req to NULL in case of failure in qla2x00_mem_alloc so these are correctly set to NULL back in qla2x00_probe_one 2) After jumping to probe_failed: and calling qla2x00_free_device, explicitly set rsp and req to NULL so further calls with these pointers do not crash, i.e. the free queue calls in the probe_hw_failed section we fall through to. 3) Fix return code check in the call to qla2x00_alloc_queues. We currently drop the return code on the floor. The probe fails but the caller of the probe doesn't have an error code, so it attaches to pci. This can result in a crash on module shutdown. 4) Remove unnecessary NULL checks in qla2x00_free_req_que, qla2x00_free_rsp_que, and the egregious NULL checks before kfrees and vfrees in qla2x00_mem_free. I tested this out running a scenario where the card breaks at various times during initialization. I made sure I forced every error exit path in qla2x00_probe_one. Cc: <stable@vger.kernel.org> # v4.16 Fixes: 6a2cf8d3663e ("scsi: qla2xxx: Fix crashes in qla2x00_probe_one on probe failure") Signed-off-by: Bill Kuzeja <william.kuzeja@stratus.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-21scsi: qla2xxx: Fix crashes in qla2x00_probe_one on probe failureBill Kuzeja1-22/+37
commit 6a2cf8d3663e13e19af636c2a8d92e766261dc45 upstream. Because of the shifting around of code in qla2x00_probe_one recently, failures during adapter initialization can lead to problems, i.e. NULL pointer crashes and doubly freed data structures which cause eventual panics. This V2 version makes the relevant memory free routines idempotent, so repeat calls won't cause any harm. I also removed the problematic probe_init_failed exit point as it is not needed. Fixes: d64d6c5671db ("scsi: qla2xxx: Fix NULL pointer crash due to probe failure") Signed-off-by: Bill Kuzeja <william.kuzeja@stratus.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-15scsi: qla2xxx: Fix NULL pointer crash due to probe failurehimanshu.madhani@cavium.com1-4/+4
commit d64d6c5671db5e693a0caaee79f2571b098749c9 upstream. This patch fixes regression added by commit d74595278f4ab ("scsi: qla2xxx: Add multiple queue pair functionality."). When driver is not able to get reqeusted IRQs from the system, driver will attempt tp clean up memory before failing hardware probe. During this cleanup, driver assigns NULL value to the pointer which has not been allocated by driver yet. This results in a NULL pointer access. Log file will show following message and stack trace qla2xxx [0000:a3:00.1]-00c7:21: MSI-X: Failed to enable support, giving up -- 32/-1. qla2xxx [0000:a3:00.1]-0037:21: Falling back-to MSI mode --1. qla2xxx [0000:a3:00.1]-003a:21: Failed to reserve interrupt 821 already in use. BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffffc010c4b6>] qla2x00_probe_one+0x18b6/0x2730 [qla2xxx] PGD 0 Oops: 0002 [#1] SMP Fixes: d74595278f4ab ("scsi: qla2xxx: Add multiple queue pair functionality."). Cc: <stable@vger.kernel.org> # 4.10 Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-15scsi: qla2xxx: Fix system crash in qlt_plogi_ack_unrefQuinn Tran1-5/+5
commit 19759033e0d0beed70421ab9258f5ede79e070ae upstream. Fix system crash due to NULL pointer access. qlt_plogi_ack_t and fc_port structures were not properly bound before calling qlt_plogi_ack_unref(). RIP: 0010:qlt_plogi_ack_unref+0xa1/0x150 [qla2xxx] Call Trace: qla24xx_create_new_sess+0xb1/0x320 [qla2xxx] qla2x00_do_work+0x123/0x260 [qla2xxx] qla2x00_iocb_work_fn+0x30/0x40 [qla2xxx] process_one_work+0x1f3/0x530 worker_thread+0x4e/0x480 kthread+0x10c/0x140 Fixes: 726b85487067d ("qla2xxx: Add framework for async fabric discovery") Cc: <stable@vger.kernel.org> # 4.10+ Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-15scsi: qla2xxx: Fix Relogin being triggered too fastQuinn Tran1-8/+14
commit 4005a995668b8fd58f4cf1460dd4cf63efa18363 upstream. Current driver design schedules relogin process via DPC thread every 1 second. In a large fabric, this DPC thread tries to schedule too many jobs and might get overloaded. As a result of this processing of DPC thread, it can schedule relogin earlier than 1 second. Fixes: 726b85487067d ("qla2xxx: Add framework for async fabric discovery") Cc: <stable@vger.kernel.org> # 4.10+ Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-15scsi: qla2xxx: Serialize GPNID for multiple RSCNQuinn Tran1-0/+1
commit 2d73ac6102d943c4be4945735a338005359c6abc upstream. GPNID is triggered by RSCN. For multiple RSCNs of the same affected NPORT ID, serialize the GPNID to prevent confusion. Fixes: 726b85487067d ("qla2xxx: Add framework for async fabric discovery") Cc: <stable@vger.kernel.org> # 4.10+ Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-15scsi: qla2xxx: Skip IRQ affinity for Target QPairsQuinn Tran1-1/+6
commit d68b850e1bfb9afb24b888a946165a186a710195 upstream. Fix co-existence between Block MQ and Target Mode. Block MQ and initiator mode requires midlayer queue mapping to check for IRQ to be affinitized. For target mode, it's not the case. Fixes: 09620eeb62c41 ("scsi: qla2xxx: Add debug knob for user control workload") Cc: <stable@vger.kernel.org> # 4.12+ Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-15scsi: qla2xxx: Move session delete to driver work queueQuinn Tran1-1/+2
commit a01c77d2cbc45ba527e884e5c30363a1200a4130 upstream. Move session delete from system work queue to driver's work queue for in time processing. Fixes: 726b85487067d ("qla2xxx: Add framework for async fabric discovery") Cc: <stable@vger.kernel.org> # 4.10+ Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-30scsi: qla2xxx: Suppress a kernel complaint in qla_init_base_qpair()Bart Van Assche1-1/+1
commit 8653188763b56e0bcbdcab30cc7b059672c900ac upstream. Avoid that the following is reported while loading the qla2xxx kernel module: BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/783 caller is debug_smp_processor_id+0x17/0x20 CPU: 7 PID: 783 Comm: modprobe Not tainted 4.14.0-rc8-dbg+ #2 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 Call Trace: dump_stack+0x8e/0xce check_preemption_disabled+0xe3/0xf0 debug_smp_processor_id+0x17/0x20 qla2x00_probe_one+0xf43/0x26c0 [qla2xxx] pci_device_probe+0xca/0x140 driver_probe_device+0x2e2/0x440 __driver_attach+0xa3/0xe0 bus_for_each_dev+0x5f/0x90 driver_attach+0x19/0x20 bus_add_driver+0x1c0/0x260 driver_register+0x5b/0xd0 __pci_register_driver+0x63/0x70 qla2x00_module_init+0x1d6/0x222 [qla2xxx] do_one_initcall+0x3c/0x163 do_init_module+0x55/0x1eb load_module+0x20a2/0x2890 SYSC_finit_module+0xd7/0xf0 SyS_finit_module+0x9/0x10 entry_SYSCALL_64_fastpath+0x23/0xc2 Fixes: commit 8abfa9e22683 ("scsi: qla2xxx: Add function call to qpair for door bell") Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Quinn Tran <quinn.tran@cavium.com> Cc: Himanshu Madhani <himanshu.madhani@cavium.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-31scsi: qla2xxx: Fix oops in qla2x00_probe_one error pathDouglas Miller1-0/+1
On error, kthread_create() returns an errno-encoded pointer, not NULL. The routine qla2x00_probe_one() detects the error case and jumps to probe_failed, but has already assigned the return value from kthread_create() to ha->dpc_thread. Then probe_failed checks to see if ha->dpc_thread is not NULL before doing cleanup on it. Since in the error case this is also not NULL, it ends up trying to access an invalid task pointer. Solution is to assign NULL to ha->dpc_thread in the error path to avoid kthread cleanup in that case. Signed-off-by: Douglas Miller <dougmill@linux.vnet.ibm.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-10-17scsi: qla2xxx: Initialize Work element before requesting IRQsHimanshu Madhani1-2/+2
commit a9e170e28636 ("scsi: qla2xxx: Fix uninitialized work element") moved initializiation of work element earlier in the probe to fix call stack. However, it still leaves a window where interrupt can be generated before work element is initialized. Fix that window by initializing work element before we are requesting IRQs. [mkp: fixed typos] Fixes: a9e170e28636 ("scsi: qla2xxx: Fix uninitialized work element") Cc: <stable@vger.kernel.org> # 4.13 Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-10-11scsi: qla2xxx: Fix uninitialized work elementQuinn Tran1-1/+2
Fixes following stack trace kernel: Call Trace: kernel: dump_stack+0x63/0x84 kernel: __warn+0xd1/0xf0 kernel: warn_slowpath_null+0x1d/0x20 kernel: __queue_work+0x37a/0x420 kernel: queue_work_on+0x27/0x40 kernel: queue_work+0x14/0x20 [qla2xxx] kernel: schedule_work+0x13/0x20 [qla2xxx] kernel: qla2x00_post_work+0xab/0xb0 [qla2xxx] kernel: qla2x00_post_aen_work+0x3b/0x50 [qla2xxx] kernel: qla2x00_async_event+0x20d/0x15d0 [qla2xxx] kernel: ? lock_timer_base+0x7d/0xa0 kernel: qla24xx_intr_handler+0x1da/0x310 [qla2xxx] kernel: qla2x00_poll+0x36/0x60 [qla2xxx] kernel: qla2x00_mailbox_command+0x659/0xec0 [qla2xxx] kernel: ? proc_create_data+0x7a/0xd0 kernel: qla25xx_init_rsp_que+0x15b/0x240 [qla2xxx] kernel: ? request_irq+0x14/0x20 [qla2xxx] kernel: qla25xx_create_rsp_que+0x256/0x3c0 [qla2xxx] kernel: qla2xxx_create_qpair+0x2af/0x5b0 [qla2xxx] kernel: qla2x00_probe_one+0x1107/0x1c30 [qla2xxx] Fixes: ec7193e26055 ("qla2xxx: Fix delayed response to command for loop mode/direct connect.") Cc: <stable@vger.kernel.org> # 4.13 Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-31scsi: qla2xxx: Fix slow mem alloc behind lockQuinn Tran1-1/+32
Call Trace: [<ffffffff81341687>] dump_stack+0x6b/0xa4 [<ffffffff810c3e30>] ? print_irqtrace_events+0xd0/0xe0 [<ffffffff8109e3c3>] ___might_sleep+0x183/0x240 [<ffffffff8109e4d2>] __might_sleep+0x52/0x90 [<ffffffff811fe17b>] kmem_cache_alloc_trace+0x5b/0x300 [<ffffffff810c666b>] ? __lock_acquired+0x30b/0x420 [<ffffffffa0733c28>] qla2x00_alloc_fcport+0x38/0x2a0 [qla2xxx] [<ffffffffa07217f4>] ? qla2x00_do_work+0x34/0x2b0 [qla2xxx] [<ffffffff816cc82b>] ? _raw_spin_lock_irqsave+0x7b/0x90 [<ffffffffa072169a>] ? qla24xx_create_new_sess+0x3a/0x160 [qla2xxx] [<ffffffffa0721723>] qla24xx_create_new_sess+0xc3/0x160 [qla2xxx] [<ffffffff810c91ed>] ? trace_hardirqs_on+0xd/0x10 [<ffffffffa07218f8>] qla2x00_do_work+0x138/0x2b0 [qla2xxx] Signed-off-by: Quinn Tran <quinn.tran@qlogic.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-25scsi: qla2xxx: Do not call abort handler function during chip resetSawan Chandak1-0/+2
If there are IO's running and host reset or chip reset is triggered, IO's can fail due to rport time out. During chip reset recovery process, driver notifies the transport layer that remote port no longer exist, by calling fc_remote_port_delete(). When this function is called, it actually delays deletion by "blocking" it. It sets the remote port state to "FC_PORTSTATE_BLOCKED" and sets FC_RPORT_DEVLOSS_PENDING. When driver tries to abort the command by calling its abort handler function, abort handler will wait until remote port state is blocked state or wait for dev_loss_tmo time. Due to this blocking, rport times out and results in an IO failure. This patch adds a check for any active reset process before calling abort handler function. [mkp: typo] Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-25scsi: qla2xxx: Increase ql2xmaxqdepth to 64Michael Hernandez1-2/+2
ql2xmaxqdepth is the module parameter that seeds the per target queue depth in the Scsi midlayer (sdev->queue_depth). Performance testing revealed that increasing this value would improve IOPS numbers under certain workloads. Signed-off-by: Michael Hernandez <michael.hernandez@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-25scsi: qla2xxx: Enable Async TMF processinghimanshu.madhani@cavium.com1-1/+1
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-25scsi: qla2xxx: Add timeout ability to wait_for_sess_deletion().Joe Carnuccio1-1/+1
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-25scsi: qla2xxx: Move logging default mask to execute once only.Joe Carnuccio1-0/+2
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-25scsi: qla2xxx: Use sp->free instead of hard coded call.Joe Carnuccio1-4/+4
Calling sp->free() ensures the context-correct free routine is called. Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-25scsi: qla2xxx: Add ability to autodetect SFP typeQuinn Tran1-1/+35
SFP can come in 2 formats: short range/SR and long range/LR. For LR, user the can increase the number of Buffer to Buffer credits between end points via Cavium's command line tool. By default, FW uses a lower BB Credit value optimized for SR. This patch will read the SFP for each link up event and during chip reset sequence. If the SFP type and setting are mismatch, then the chip is reset 1 time to use the appropriate setting. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-25scsi: qla2xxx: Change ha->wq max_active value to defaultQuinn Tran1-1/+1
Update ha->wq max_active from 1 to default. MQ interrupts are queued up via this work queue. This allows interrupts to be process in parrallel, instead of serialized by the work queue. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-25scsi: qla2xxx: Handle PCIe error for driverSawan Chandak1-4/+28
Driver will perform following - Set PFLG_DRIVER_REMOVING flag and do not disable PCIe error reporting during adapter shutdown. - If PCIe device count is already zero, return correct error type from PCI error interface. - When device is offline, return correct error type from PCIe error path. - If there is board disable thread active during shutdown and PCIe device count is zero then cancel scheduling board disable thread during shutdown and return. Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-25scsi: qla2xxx: Add command completion for error pathDuane Grigsby1-0/+1
The driver held spinlocks during callbacks for NVME errors which resulted in a deadlock because recovery LS cmds needed the same lock. Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-07scsi: qla2xxx: Added change to enable ZIO for FC-NVMe devicesDuane Grigsby1-5/+20
Add support to the driver to set the exchange threshold value for the number of outstanding AENs. Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com> Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-07scsi: qla2xxx: Cleanup FC-NVMe codehimanshu.madhani@cavium.com1-3/+3
This patch does not change any functionality. Following cleanups have been done as requested by reviewer - Changed waitQ --> waitq - Collapsed multiple debug statements into single - Remove extra parentheses in if-else as per operator precedence - Remove unnecessary casting Cc: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: Add FC-NVMe F/W initialization and transport registrationDuane Grigsby1-7/+33
This code provides the interfaces to register remote and local ports of FC4 type 0x28 with the FC-NVMe transport and transports the requests (FC-NVMe FC link services and FC-NVMe commands IUs) to the fabric. It also provides the support for allocating h/w queues and aborting FC-NVMe FC requests. Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com> Signed-off-by: Anil Gurumurthy <anil.gurumurhty@cavium.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: Add FC-NVMe command handlingDuane Grigsby1-2/+16
This patch adds logic to handle the completion of FC-NVMe commands and creates a sub-command in the SRB command structure to manage NVMe commands. Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com> Signed-off-by: Anil Gurumurthy <anil.gurumurhty@cavium.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: Add FC-NVMe port discovery and PRLI handlingDuane Grigsby1-0/+4
Added logic to change the login process into an optional PRIL step for FC-NVMe ports as a separate operation, such that we can change type to 0x28 (NVMe). Currently, the driver performs the PLOGI/PRLI together as one operation, but if the discovered port is an NVMe port then we first issue the PLOGI and then we issue the PRLI. Also, the fabric discovery logic was changed to mark each discovered FC NVMe port, so that we can register them with the FC-NVMe transport later. Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com> Signed-off-by: Anil Gurumurthy <anil.gurumurhty@cavium.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: Include Exchange offload/Extended Login into FW dumpQuinn Tran1-3/+0
Add missing memory dump of Exchange Offload and Extended login into FW dump. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: Add function call to qpair for door bellQuinn Tran1-12/+23
Add call back to door bell for qpair. This help reduce access to qla_hw_data structure, in order to reduce cach thrash. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: use shadow register for ISP27XXQuinn Tran1-0/+1
For ISP27XX, use shadow register to read FW provided REQQ's consumer index. The shadow register is dma'ed by firmware. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: move fields from qla_hw_data to qla_qpairQuinn Tran1-1/+1
- Move chip_reset, enable_class_2 fields from qla_hw_data to qla_qpair to reduce cache thrash for target MQ. - Optimizations to reduce unnecessary memory load for good path io. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: Fix mailbox failure while deleting Queue pairsSawan Chandak1-0/+1
In target mode driver, queue pairs are not created during driver load time, instead they are created at the configuration time after chip reset. If a user tries to load/unload driver after queue pairs are created, then there would be mailbox failure, while deleting queue pairs. Flag is added to check if queue pairs are created or not. Queue pairs will be deleted only If they were created during target configuration. Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: Enable Target Multi QueueQuinn Tran1-20/+36
Enable Multi Queue for Target mode. At Initiator LUN scan time, each LUN is assign to a QPair. Each QPair is affinitize to certain CPU. When new cmd arrives from the wire, the lunid is used to search for qpair. The qpair's affinitized cpuid will be used to queue up the work element. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: Preparation for Target MQ.Quinn Tran1-3/+20
In Current code, Req Q 0, RespQ 0 & hardware_lock are the main resources for sending and process completion of Target IO. These resources are now referenced behind a new qpair/"struct qla_qpair base_qpair". Main path IO handle will access those resources via the qpair pointer in preparation for Target MQ. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-28scsi: qla2xxx: Combine Active command arrays.Quinn Tran1-21/+54
Merge active/outstanding cmd arrays from target side and initiator side together in prepration for Target Multi Queue support. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-13scsi: qla2xxx: Add ql2xiniexchg parameterQuinn Tran1-37/+99
Previously, the ql2xexchoffld module parameter was used to control the max number of exchanges to be offload onto host memory. Module parameter ql_dm_tgt_ex_pct was used to control the percentage of exchanges allocated to the Target side. With this patch, module parameter ql_dm_tgt_ex_pct is no longer used to control exchanges for the driver. New module parameter ql2xiniexchg is added to control exchanges between target mode and initiator mode. With the updated module parameters, users can control the exact number of exchanges for either Initiator or Target. The exchange offload feature will be automatically enabled when the total number of exchanges exceeds 2048 limit. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-13scsi: qla2xxx: Cleanup debug message IDsQuinn Tran1-15/+15
Assign unique id to all traces and logs for debug purpose. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-01scsi: qla2xxx: Fix extraneous ref on sp's after adapter breakBill Kuzeja1-2/+6
Hung task timeouts can result if a qlogic board breaks unexpectedly while running I/O. These tasks become hung because command srb reference counts are not going to zero, hence the affected srbs and commands do not get freed. This fix accounts for this extra reference in the srbs in the case of a board failure. Fixes: a465537ad1a4 ("qla2xxx: Disable the adapter and skip error recovery in case of register disconnect") Signed-off-by: Bill Kuzeja <william.kuzeja@stratus.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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