[SCSI] qla4xxx: Add support to get CHAP details for flash target session

Add support to get local CHAP - index, username and password,
sysfs params of iscsi session corresponding to flash target entry.

Signed-off-by: Adheer Chandravanshi <adheer.chandravanshi@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 933c766..6dc3e99 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -1652,9 +1652,12 @@ static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
        struct iscsi_session *sess = cls_sess->dd_data;
        struct ddb_entry *ddb_entry = sess->dd_data;
        struct scsi_qla_host *ha = ddb_entry->ha;
+       struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
+       struct ql4_chap_table chap_tbl;
        int rval, len;
        uint16_t idx;
 
+       memset(&chap_tbl, 0, sizeof(chap_tbl));
        switch (param) {
        case ISCSI_PARAM_CHAP_IN_IDX:
                rval = qla4xxx_get_chap_index(ha, sess->username_in,
@@ -1666,14 +1669,46 @@ static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
                        len = sprintf(buf, "%hu\n", idx);
                break;
        case ISCSI_PARAM_CHAP_OUT_IDX:
-               rval = qla4xxx_get_chap_index(ha, sess->username,
-                                             sess->password, LOCAL_CHAP,
-                                             &idx);
+               if (ddb_entry->ddb_type == FLASH_DDB) {
+                       if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
+                               idx = ddb_entry->chap_tbl_idx;
+                               rval = QLA_SUCCESS;
+                       } else {
+                               rval = QLA_ERROR;
+                       }
+               } else {
+                       rval = qla4xxx_get_chap_index(ha, sess->username,
+                                                     sess->password,
+                                                     LOCAL_CHAP, &idx);
+               }
                if (rval)
                        len = sprintf(buf, "\n");
                else
                        len = sprintf(buf, "%hu\n", idx);
                break;
+       case ISCSI_PARAM_USERNAME:
+       case ISCSI_PARAM_PASSWORD:
+               /* First, populate session username and password for FLASH DDB,
+                * if not already done. This happens when session login fails
+                * for a FLASH DDB.
+                */
+               if (ddb_entry->ddb_type == FLASH_DDB &&
+                   ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
+                   !sess->username && !sess->password) {
+                       idx = ddb_entry->chap_tbl_idx;
+                       rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
+                                                           chap_tbl.secret,
+                                                           idx);
+                       if (!rval) {
+                               iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
+                                               (char *)chap_tbl.name,
+                                               strlen((char *)chap_tbl.name));
+                               iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
+                                               (char *)chap_tbl.secret,
+                                               chap_tbl.secret_len);
+                       }
+               }
+               /* allow fall-through */
        default:
                return iscsi_session_get_param(cls_sess, param, buf);
        }