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authorLalit Chandivade <lalit.chandivade@qlogic.com>2011-10-07 16:55:44 -0700
committerJames Bottomley <JBottomley@Parallels.com>2011-10-16 11:09:32 -0500
commit28deb45cea848e8389530b17c987339b62fea459 (patch)
tree76035efbda443d82e638d64dd261f96dd5bd0dc0 /drivers/scsi/qla4xxx
parent8de5b9582420acac5129ec7921711aded75406c0 (diff)
downloadop-kernel-dev-28deb45cea848e8389530b17c987339b62fea459.zip
op-kernel-dev-28deb45cea848e8389530b17c987339b62fea459.tar.gz
[SCSI] qla4xxx: Fix getting BIDI CHAP for boot targets
If a boot target has a BIDI CHAP enabled, then read the user/secret from CHAP table. Do not assume BIDI chap at peer CHAP index + 1 JIRA Key: UPSISCSI-156 Signed-off-by: Lalit Chandivade <lalit.chandivade@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>
Diffstat (limited to 'drivers/scsi/qla4xxx')
-rw-r--r--drivers/scsi/qla4xxx/ql4_os.c62
1 files changed, 58 insertions, 4 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 0bcb6fd..5266d97 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -2877,6 +2877,60 @@ exit_boot_info:
return ret;
}
+/**
+ * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
+ * @ha: pointer to adapter structure
+ * @username: CHAP username to be returned
+ * @password: CHAP password to be returned
+ *
+ * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
+ * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
+ * So from the CHAP cache find the first BIDI CHAP entry and set it
+ * to the boot record in sysfs.
+ **/
+static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
+ char *password)
+{
+ int i, ret = -EINVAL;
+ int max_chap_entries = 0;
+ struct ql4_chap_table *chap_table;
+
+ if (is_qla8022(ha))
+ max_chap_entries = (ha->hw.flt_chap_size / 2) /
+ sizeof(struct ql4_chap_table);
+ else
+ max_chap_entries = MAX_CHAP_ENTRIES_40XX;
+
+ if (!ha->chap_list) {
+ ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
+ return ret;
+ }
+
+ mutex_lock(&ha->chap_sem);
+ for (i = 0; i < max_chap_entries; i++) {
+ chap_table = (struct ql4_chap_table *)ha->chap_list + i;
+ if (chap_table->cookie !=
+ __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
+ continue;
+ }
+
+ if (chap_table->flags & BIT_7) /* local */
+ continue;
+
+ if (!(chap_table->flags & BIT_6)) /* Not BIDI */
+ continue;
+
+ strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
+ strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
+ ret = 0;
+ break;
+ }
+ mutex_unlock(&ha->chap_sem);
+
+ return ret;
+}
+
+
static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
struct ql4_boot_session_info *boot_sess,
uint16_t ddb_index)
@@ -2948,10 +3002,10 @@ static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
- ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
- intr_chap_name,
- (char *)&boot_conn->chap.intr_secret,
- (idx + 1));
+ ret = qla4xxx_get_bidi_chap(ha,
+ (char *)&boot_conn->chap.intr_chap_name,
+ (char *)&boot_conn->chap.intr_secret);
+
if (ret) {
ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
ret = QLA_ERROR;
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