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[SCSI] qla4xxx: Fix getting BIDI CHAP for boot targets

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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>
This commit is contained in:
Lalit Chandivade 2011-10-07 16:55:44 -07:00 committed by James Bottomley
parent 8de5b95824
commit 28deb45cea
1 changed files with 58 additions and 4 deletions
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62
drivers/scsi/qla4xxx/ql4_os.c
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@ -2877,6 +2877,60 @@ exit_boot_info:
return ret; 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, static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
struct ql4_boot_session_info *boot_sess, struct ql4_boot_session_info *boot_sess,
uint16_t ddb_index) 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")); DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap. ret = qla4xxx_get_bidi_chap(ha,
intr_chap_name, (char *)&boot_conn->chap.intr_chap_name,
(char *)&boot_conn->chap.intr_secret, (char *)&boot_conn->chap.intr_secret);
(idx + 1));
if (ret) { if (ret) {
ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n"); ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
ret = QLA_ERROR; ret = QLA_ERROR;