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[SCSI] qla4xxx: Clear DDB map index on the basis of AEN. 

Unable to login to session if login-logout issued consecutively for
multiple sessions. Solution is to clear idx in DDB map on the basis
of no-active connection asynchronous event (AEN).

JIRA Key: UPSISCSI-135

Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Manish Rangankar 2011-10-07 16:55:46 -07:00 committed by James Bottomley
parent 166dd20d79
commit 736cf369c9
2 changed files with 14 additions and 9 deletions
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12
drivers/scsi/qla4xxx/ql4_init.c
View File

@ -880,6 +880,10 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
if (ddb_entry == NULL) {
ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
__func__, fw_ddb_index);
if (state == DDB_DS_NO_CONNECTION_ACTIVE)
clear_bit(fw_ddb_index, ha->ddb_idx_map);
goto exit_ddb_event;
}
@ -910,7 +914,8 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
}
break;
case DDB_DS_SESSION_ACTIVE:
if (state == DDB_DS_SESSION_FAILED) {
switch (state) {
case DDB_DS_SESSION_FAILED:
/*
* iscsi_session failure will cause userspace to
* stop the connection which in turn would block the
@ -919,6 +924,11 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
iscsi_session_failure(ddb_entry->sess->dd_data,
ISCSI_ERR_CONN_FAILED);
status = QLA_SUCCESS;
break;
case DDB_DS_NO_CONNECTION_ACTIVE:
clear_bit(fw_ddb_index, ha->ddb_idx_map);
status = QLA_SUCCESS;
break;
}
break;
default:

11
drivers/scsi/qla4xxx/ql4_os.c
View File

@ -1004,6 +1004,7 @@ qla4xxx_session_create(struct iscsi_endpoint *ep,
qla_ep = ep->dd_data;
dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
ha = to_qla_host(qla_ep->host);
get_ddb_index:
ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
@ -1063,6 +1064,8 @@ static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
ddb_entry = sess->dd_data;
ha = ddb_entry->ha;
qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
spin_lock_irqsave(&ha->hardware_lock, flags);
qla4xxx_free_ddb(ha, ddb_entry);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
@ -1183,14 +1186,6 @@ static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
options = LOGOUT_OPTION_CLOSE_SESSION;
if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
else
qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
/*
* Clear the DDB bit so that next login can use the bit
* if FW is not clearing the DDB entry then set DDB will fail anyways
*/
clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
}
static void qla4xxx_task_work(struct work_struct *wdata)