From: Vikas Chaudhary <vikas.chaudhary@xxxxxxxxxx>
Per RFC 3720, Login Response Status Code 0x02 should not be retried.
Condensed connection error checking code to a single routine, and
added check for status class 0x02.
Signed-off-by: Karen Higgins <karen.higgins@xxxxxxxxxx>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@xxxxxxxxxx>
Signed-off-by: Ravi Anand <ravi.anand@xxxxxxxxxx>
---
drivers/scsi/qla4xxx/ql4_glbl.h | 5 +-
drivers/scsi/qla4xxx/ql4_init.c | 90 ++++++++++++++++++++++++++-------------
drivers/scsi/qla4xxx/ql4_isr.c | 2 +-
3 files changed, 64 insertions(+), 33 deletions(-)
diff --git a/drivers/scsi/qla4xxx/ql4_glbl.h b/drivers/scsi/qla4xxx/ql4_glbl.h
index 6400714..4218c75 100644
--- a/drivers/scsi/qla4xxx/ql4_glbl.h
+++ b/drivers/scsi/qla4xxx/ql4_glbl.h
@@ -67,13 +67,14 @@ struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
uint32_t index);
void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb);
int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host * ha);
-int qla4xxx_process_ddb_changed(struct scsi_qla_host * ha,
- uint32_t fw_ddb_index, uint32_t state);
+int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
+ uint32_t state, uint32_t conn_error);
void qla4xxx_dump_buffer(void *b, uint32_t size);
int qla4xxx_send_marker_iocb(struct scsi_qla_host *ha,
struct ddb_entry *ddb_entry, int lun, uint16_t mrkr_mod);
void sp_put(struct scsi_qla_host *ha, struct srb *sp);
+int qla4_is_relogin_allowed(struct scsi_qla_host *ha, uint32_t conn_err);
extern int ql4xextended_error_logging;
extern int ql4xdiscoverywait;
diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c
index 11223d2..fed53df 100644
--- a/drivers/scsi/qla4xxx/ql4_init.c
+++ b/drivers/scsi/qla4xxx/ql4_init.c
@@ -493,6 +493,7 @@ static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
struct dev_db_entry *fw_ddb_entry = NULL;
dma_addr_t fw_ddb_entry_dma;
int status = QLA_ERROR;
+ uint32_t conn_err;
if (ddb_entry == NULL) {
DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
@@ -513,7 +514,7 @@ static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
fw_ddb_entry_dma, NULL, NULL,
- &ddb_entry->fw_ddb_device_state, NULL,
+ &ddb_entry->fw_ddb_device_state, &conn_err,
&ddb_entry->tcp_source_port_num,
&ddb_entry->connection_id) ==
QLA_ERROR) {
@@ -572,7 +573,7 @@ static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
NIPQUAD_FMT ":%04d \"%s\"\n",
__func__, fw_ddb_index,
ddb_entry->os_target_id,
- ddb_state, conn_err,
+ ddb_entry->fw_ddb_device_state, conn_err,
NIPQUAD(fw_ddb_entry->ip_addr),
le16_to_cpu(fw_ddb_entry->port),
fw_ddb_entry->iscsi_name));
@@ -622,6 +623,39 @@ static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
}
/**
+ * qla4_is_relogin_allowed - Are we allowed to login?
+ * @ha: Pointer to host adapter structure.
+ * @conn_err: Last connection error associated with the ddb
+ *
+ * This routine tests the given connection error to determine if
+ * we are allowed to login.
+ **/
+int qla4_is_relogin_allowed(struct scsi_qla_host *ha, uint32_t conn_err)
+{
+ uint32_t err_code, login_rsp_sts_class;
+ int relogin = 1;
+
+ err_code = ((conn_err & 0x00ff0000) >> 16);
+ login_rsp_sts_class = ((conn_err & 0x0000ff00) >> 8);
+ if (err_code == 0x1c || err_code == 0x06) {
+ DEBUG2(dev_info(&ha->pdev->dev,
+ ": conn_err=0x%08x, send target completed or access"
+ " denied failure\n", conn_err));
+ relogin = 0;
+ }
+ if ((err_code == 0x08) && (login_rsp_sts_class == 0x02)) {
+ /* Login Response PDU returned an error.
+ Login Response Status in Error Code Detail
+ indicates login should not be retried.*/
+ DEBUG2(dev_info(&ha->pdev->dev,
+ ": conn_err=0x%08x, do not retry relogin\n", conn_err));
+ relogin = 0;
+ }
+
+ return relogin;
+}
+
+/**
* qla4xxx_configure_ddbs - builds driver ddb list
* @ha: Pointer to host adapter structure.
*
@@ -635,15 +669,25 @@ static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
uint32_t fw_ddb_index = 0;
uint32_t next_fw_ddb_index = 0;
uint32_t ddb_state;
- uint32_t conn_err, err_code;
+ uint32_t conn_err;
struct ddb_entry *ddb_entry;
+ struct dev_db_entry *fw_ddb_entry = NULL;
+ dma_addr_t fw_ddb_entry_dma;
uint32_t new_tgt;
+ uint32_t ipv6_device;
+
+ fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+ &fw_ddb_entry_dma, GFP_KERNEL);
+ if (fw_ddb_entry == NULL) {
+ DEBUG2(dev_info(&ha->pdev->dev, "%s: DMA alloc failed\n", __func__));
+ return QLA_ERROR;
+ }
dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
fw_ddb_index = next_fw_ddb_index) {
/* First, let's see if a device exists here */
- if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
+ if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry, 0, NULL,
&next_fw_ddb_index, &ddb_state,
&conn_err, NULL, NULL) ==
QLA_ERROR) {
@@ -663,13 +707,11 @@ static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
/* Try and login to device */
DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
ha->host_no, __func__, fw_ddb_index));
- err_code = ((conn_err & 0x00ff0000) >> 16);
- if (err_code == 0x1c || err_code == 0x06) {
- DEBUG2(printk("scsi%ld: %s send target "
- "completed "
- "or access denied failure\n",
- ha->host_no, __func__));
- } else {
+ ipv6_device = le16_to_cpu(fw_ddb_entry->options) &
+ DDB_OPT_IPV6_DEVICE;
+ if (qla4_is_relogin_allowed(ha, conn_err) &&
+ ((!ipv6_device && *((uint32_t *)fw_ddb_entry->ip_addr))
+ || ipv6_device)) {
qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
NULL, 0, NULL, &next_fw_ddb_index,
@@ -729,7 +771,6 @@ next_one:
struct qla4_relog_scan {
int halt_wait;
uint32_t conn_err;
- uint32_t err_code;
uint32_t fw_ddb_index;
uint32_t next_fw_ddb_index;
uint32_t fw_ddb_device_state;
@@ -739,18 +780,7 @@ static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
{
struct ddb_entry *ddb_entry;
- /*
- * Don't want to do a relogin if connection
- * error is 0x1c.
- */
- rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
- if (rs->err_code == 0x1c || rs->err_code == 0x06) {
- DEBUG2(printk(
- "scsi%ld: %s send target"
- " completed or "
- "access denied failure\n",
- ha->host_no, __func__));
- } else {
+ if (qla4_is_relogin_allowed(ha, rs->conn_err)) {
/* We either have a device that is in
* the process of relogging in or a
* device that is waiting to be
@@ -1405,8 +1435,8 @@ static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
*
* This routine processes a Decive Database Changed AEN Event.
**/
-int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
- uint32_t fw_ddb_index, uint32_t state)
+int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
+ uint32_t state, uint32_t conn_err)
{
struct ddb_entry * ddb_entry;
uint32_t old_fw_ddb_device_state;
@@ -1464,13 +1494,13 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
/*
* Relogin if device state changed to a not active state.
- * However, do not relogin if this aen is a result of an IOCTL
- * logout (DF_NO_RELOGIN) or if this is a discovered device.
+ * However, do not relogin if a RELOGIN is in process, or
+ * we are not allowed to relogin to this DDB.
*/
if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
!test_bit(DF_RELOGIN, &ddb_entry->flags) &&
!test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
- !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
+ qla4_is_relogin_allowed(ha, conn_err)) {
/*
* This triggers a relogin. After the relogin_timer
* expires, the relogin gets scheduled. We must wait a
@@ -1478,7 +1508,7 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
* with failed device_state or a logout response before
* we can issue another relogin.
*/
- /* Firmware padds this timeout: (time2wait +1).
+ /* Firmware pads this timeout: (time2wait +1).
* Driver retry to login should be longer than F/W.
* Otherwise F/W will fail
* set_ddb() mbx cmd with 0x4005 since it still
diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c
index 21c4d02..e41f724 100644
--- a/drivers/scsi/qla4xxx/ql4_isr.c
+++ b/drivers/scsi/qla4xxx/ql4_isr.c
@@ -836,7 +836,7 @@ void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen)
qla4xxx_reinitialize_ddb_list(ha);
} else if (mbox_sts[1] == 1) { /* Specific device. */
qla4xxx_process_ddb_changed(ha, mbox_sts[2],
- mbox_sts[3]);
+ mbox_sts[3], mbox_sts[4]);
}
break;
}
--
1.6.0.2
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