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authorJayamohan Kallickal <jayamohan.kallickal@emulex.com>2014-01-29 11:16:43 +0400
committerJames Bottomley <JBottomley@Parallels.com>2014-03-15 21:19:11 +0400
commit9343be749085c2229622ef47058dca4937e30882 (patch)
tree5191be14f1cd0504aedda9af07dd534ce9441bd8 /drivers/scsi/be2iscsi
parente08b3c8b11e9c49ac95cf0fff5bd6cff32de13a4 (diff)
downloadlinux-9343be749085c2229622ef47058dca4937e30882.tar.xz
[SCSI] be2iscsi: Fix the session cleanup when reboot/shutdown happens
In iSCSI Boot scenario, when machine is reboot/shutdown phase the active sessions are not closed. Driver queue cleanup is done as part of unload and device is disabled. Sessions are still active, iSCSI commands are issued from session which comes to driver, as driver cleanup and device disabled there is kernel stack dump with errors. Fix is invoking iscsi_session_failure with ISCSI_ERR_INVALID_HOST on all the active sessions when shutdown routine is called. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/be2iscsi')
-rw-r--r--drivers/scsi/be2iscsi/be.h1
-rw-r--r--drivers/scsi/be2iscsi/be_cmds.c17
-rw-r--r--drivers/scsi/be2iscsi/be_cmds.h1
-rw-r--r--drivers/scsi/be2iscsi/be_iscsi.c1
-rw-r--r--drivers/scsi/be2iscsi/be_main.c2
-rw-r--r--drivers/scsi/be2iscsi/be_main.h5
6 files changed, 26 insertions, 1 deletions
diff --git a/drivers/scsi/be2iscsi/be.h b/drivers/scsi/be2iscsi/be.h
index 23c73fe42648..1bfb0bd01198 100644
--- a/drivers/scsi/be2iscsi/be.h
+++ b/drivers/scsi/be2iscsi/be.h
@@ -139,6 +139,7 @@ struct be_ctrl_info {
#define PAGE_SHIFT_4K 12
#define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
#define mcc_timeout 120000 /* 12s timeout */
+#define BEISCSI_LOGOUT_SYNC_DELAY 250
/* Returns number of pages spanned by the data starting at the given addr */
#define PAGES_4K_SPANNED(_address, size) \
diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c
index 86d91f31a6a3..1432ed5e9fc6 100644
--- a/drivers/scsi/be2iscsi/be_cmds.c
+++ b/drivers/scsi/be2iscsi/be_cmds.c
@@ -400,8 +400,23 @@ static struct be_mcc_compl *be_mcc_compl_get(struct beiscsi_hba *phba)
return NULL;
}
-static void be2iscsi_fail_session(struct iscsi_cls_session *cls_session)
+/**
+ * be2iscsi_fail_session(): Closing session with appropriate error
+ * @cls_session: ptr to session
+ *
+ * Depending on adapter state appropriate error flag is passed.
+ **/
+void be2iscsi_fail_session(struct iscsi_cls_session *cls_session)
{
+ struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
+ struct beiscsi_hba *phba = iscsi_host_priv(shost);
+ uint32_t iscsi_err_flag;
+
+ if (phba->state & BE_ADAPTER_STATE_SHUTDOWN)
+ iscsi_err_flag = ISCSI_ERR_INVALID_HOST;
+ else
+ iscsi_err_flag = ISCSI_ERR_CONN_FAILED;
+
iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
}
diff --git a/drivers/scsi/be2iscsi/be_cmds.h b/drivers/scsi/be2iscsi/be_cmds.h
index 14c51e6f2445..7cf7f99ee442 100644
--- a/drivers/scsi/be2iscsi/be_cmds.h
+++ b/drivers/scsi/be2iscsi/be_cmds.h
@@ -1318,4 +1318,5 @@ void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, int payload_len,
void be_cmd_hdr_prepare(struct be_cmd_req_hdr *req_hdr,
u8 subsystem, u8 opcode, int cmd_len);
+void be2iscsi_fail_session(struct iscsi_cls_session *cls_session);
#endif /* !BEISCSI_CMDS_H */
diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c
index a7a210ef407c..a3df43324c98 100644
--- a/drivers/scsi/be2iscsi/be_iscsi.c
+++ b/drivers/scsi/be2iscsi/be_iscsi.c
@@ -1361,6 +1361,7 @@ void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
beiscsi_mccq_compl(phba, tag, NULL, NULL);
beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
free_ep:
+ msleep(BEISCSI_LOGOUT_SYNC_DELAY);
beiscsi_free_ep(beiscsi_ep);
beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 89c95f1537e8..b1b6e74e0b7c 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -5301,6 +5301,8 @@ static void beiscsi_shutdown(struct pci_dev *pcidev)
return;
}
+ phba->state = BE_ADAPTER_STATE_SHUTDOWN;
+ iscsi_host_for_each_session(phba->shost, be2iscsi_fail_session);
beiscsi_quiesce(phba, BEISCSI_CLEAN_UNLOAD);
pci_disable_device(pcidev);
}
diff --git a/drivers/scsi/be2iscsi/be_main.h b/drivers/scsi/be2iscsi/be_main.h
index e02e14cedd5d..77f33a472845 100644
--- a/drivers/scsi/be2iscsi/be_main.h
+++ b/drivers/scsi/be2iscsi/be_main.h
@@ -97,9 +97,14 @@
#define INVALID_SESS_HANDLE 0xFFFFFFFF
+/**
+ * Adapter States
+ **/
#define BE_ADAPTER_LINK_UP 0x001
#define BE_ADAPTER_LINK_DOWN 0x002
#define BE_ADAPTER_PCI_ERR 0x004
+#define BE_ADAPTER_STATE_SHUTDOWN 0x008
+
#define BEISCSI_CLEAN_UNLOAD 0x01
#define BEISCSI_EEH_UNLOAD 0x02