From: Nilesh Javali <nilesh.javali@xxxxxxxxxx>
Issue:
qla4xxx Unable to clear DDB indices when logout fails due to
failure of connection close mbox command.
Root cause:
If login to session fail, iscsiadm make call to destroy_session.
qla4xxx driver does not free ddb index map before free_ddb()
Fix:
Clear DDB Index map before free_ddb in "destroy_session"
in case of connection close mailbox command failure with 4005h.
Signed-off-by: Nilesh Javali <nilesh.javali@xxxxxxxxxx>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@xxxxxxxxxx>
---
drivers/scsi/qla4xxx/ql4_def.h | 2 ++
drivers/scsi/qla4xxx/ql4_fw.h | 1 +
drivers/scsi/qla4xxx/ql4_mbx.c | 4 ++++
drivers/scsi/qla4xxx/ql4_os.c | 4 +++-
4 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h
index 4e11133..33eae2e 100644
--- a/drivers/scsi/qla4xxx/ql4_def.h
+++ b/drivers/scsi/qla4xxx/ql4_def.h
@@ -297,6 +297,8 @@ struct ddb_entry {
/* Driver Re-login */
unsigned long flags; /* DDB Flags */
+#define DDB_CONN_CLOSE_FAILURE 0 /* 0x00000001 */
+
uint16_t default_relogin_timeout; /* Max time to wait for
* relogin to complete */
atomic_t retry_relogin_timer; /* Min Time between relogins
diff --git a/drivers/scsi/qla4xxx/ql4_fw.h b/drivers/scsi/qla4xxx/ql4_fw.h
index e3242df..a94593a 100644
--- a/drivers/scsi/qla4xxx/ql4_fw.h
+++ b/drivers/scsi/qla4xxx/ql4_fw.h
@@ -390,6 +390,7 @@ struct qla_flt_region {
#define MBOX_CMD_CLEAR_DATABASE_ENTRY 0x0031
#define MBOX_CMD_CONN_OPEN 0x0074
#define MBOX_CMD_CONN_CLOSE_SESS_LOGOUT 0x0056
+#define DDB_NOT_LOGGED_IN 0x09
#define LOGOUT_OPTION_CLOSE_SESSION 0x0002
#define LOGOUT_OPTION_RELOGIN 0x0004
#define LOGOUT_OPTION_FREE_DDB 0x0008
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index 7da0646..023f2dd 100644
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -1002,6 +1002,10 @@ int qla4xxx_session_logout_ddb(struct scsi_qla_host *ha,
"%s: MBOX_CMD_CONN_CLOSE_SESS_LOGOUT "
"failed sts %04X %04X", __func__,
mbox_sts[0], mbox_sts[1]));
+ if ((mbox_sts[0] == MBOX_STS_COMMAND_ERROR) &&
+ (mbox_sts[1] == DDB_NOT_LOGGED_IN)) {
+ set_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
+ }
}
return status;
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index a78edc3..3fec116 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -3074,6 +3074,7 @@ qla4xxx_session_create(struct iscsi_endpoint *ep,
ddb_entry->sess = cls_sess;
ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
ddb_entry->ddb_change = qla4xxx_ddb_change;
+ clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
ha->tot_ddbs++;
@@ -3123,7 +3124,8 @@ static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
destroy_session:
qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
-
+ if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
+ clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
spin_lock_irqsave(&ha->hardware_lock, flags);
qla4xxx_free_ddb(ha, ddb_entry);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
--
1.8.2.GIT
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