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path: root/drivers/scsi/ibmvscsi/ibmvfc.c
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Diffstat (limited to 'drivers/scsi/ibmvscsi/ibmvfc.c')
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c434
1 files changed, 304 insertions, 130 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index ea4abee7a2a9..b4b805e8d7db 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -110,7 +110,7 @@ static const struct {
{ IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_DEAD, DID_ERROR, 0, 1, "transport dead" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_CONFIG_ERROR, DID_ERROR, 1, 1, "configuration error" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_NAME_SERVER_FAIL, DID_ERROR, 1, 1, "name server failure" },
- { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_HALTED, DID_REQUEUE, 0, 0, "link halted" },
+ { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_HALTED, DID_REQUEUE, 1, 0, "link halted" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_GENERAL, DID_OK, 1, 0, "general transport error" },
{ IBMVFC_VIOS_FAILURE, IBMVFC_CRQ_FAILURE, DID_REQUEUE, 1, 1, "CRQ failure" },
@@ -143,6 +143,7 @@ static void ibmvfc_npiv_login(struct ibmvfc_host *);
static void ibmvfc_tgt_send_prli(struct ibmvfc_target *);
static void ibmvfc_tgt_send_plogi(struct ibmvfc_target *);
static void ibmvfc_tgt_query_target(struct ibmvfc_target *);
+static void ibmvfc_npiv_logout(struct ibmvfc_host *);
static const char *unknown_error = "unknown error";
@@ -275,7 +276,7 @@ static int ibmvfc_get_err_result(struct ibmvfc_cmd *vfc_cmd)
int fc_rsp_len = rsp->fcp_rsp_len;
if ((rsp->flags & FCP_RSP_LEN_VALID) &&
- ((!fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) ||
+ ((fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) ||
rsp->data.info.rsp_code))
return DID_ERROR << 16;
@@ -431,6 +432,8 @@ static void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt,
case IBMVFC_TGT_ACTION_DEL_RPORT:
break;
default:
+ if (action == IBMVFC_TGT_ACTION_DEL_RPORT)
+ tgt->add_rport = 0;
tgt->action = action;
break;
}
@@ -475,6 +478,10 @@ static void ibmvfc_set_host_action(struct ibmvfc_host *vhost,
if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT)
vhost->action = action;
break;
+ case IBMVFC_HOST_ACTION_LOGO_WAIT:
+ if (vhost->action == IBMVFC_HOST_ACTION_LOGO)
+ vhost->action = action;
+ break;
case IBMVFC_HOST_ACTION_INIT_WAIT:
if (vhost->action == IBMVFC_HOST_ACTION_INIT)
vhost->action = action;
@@ -483,7 +490,7 @@ static void ibmvfc_set_host_action(struct ibmvfc_host *vhost,
switch (vhost->action) {
case IBMVFC_HOST_ACTION_INIT_WAIT:
case IBMVFC_HOST_ACTION_NONE:
- case IBMVFC_HOST_ACTION_TGT_ADD:
+ case IBMVFC_HOST_ACTION_TGT_DEL_FAILED:
vhost->action = action;
break;
default:
@@ -494,11 +501,11 @@ static void ibmvfc_set_host_action(struct ibmvfc_host *vhost,
if (vhost->action == IBMVFC_HOST_ACTION_ALLOC_TGTS)
vhost->action = action;
break;
+ case IBMVFC_HOST_ACTION_LOGO:
case IBMVFC_HOST_ACTION_INIT:
case IBMVFC_HOST_ACTION_TGT_DEL:
case IBMVFC_HOST_ACTION_QUERY_TGTS:
case IBMVFC_HOST_ACTION_TGT_DEL_FAILED:
- case IBMVFC_HOST_ACTION_TGT_ADD:
case IBMVFC_HOST_ACTION_NONE:
default:
vhost->action = action;
@@ -576,7 +583,7 @@ static void ibmvfc_init_host(struct ibmvfc_host *vhost, int relogin)
}
list_for_each_entry(tgt, &vhost->targets, queue)
- tgt->need_login = 1;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
scsi_block_requests(vhost->host);
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT);
vhost->job_step = ibmvfc_npiv_login;
@@ -646,6 +653,7 @@ static void ibmvfc_release_crq_queue(struct ibmvfc_host *vhost)
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
vhost->state = IBMVFC_NO_CRQ;
+ vhost->logged_in = 0;
dma_unmap_single(vhost->dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
free_page((unsigned long)crq->msgs);
}
@@ -692,6 +700,7 @@ static int ibmvfc_reset_crq(struct ibmvfc_host *vhost)
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
vhost->state = IBMVFC_NO_CRQ;
+ vhost->logged_in = 0;
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
/* Clean out the queue */
@@ -807,10 +816,10 @@ static void ibmvfc_purge_requests(struct ibmvfc_host *vhost, int error_code)
}
/**
- * __ibmvfc_reset_host - Reset the connection to the server (no locking)
+ * ibmvfc_hard_reset_host - Reset the connection to the server by breaking the CRQ
* @vhost: struct ibmvfc host to reset
**/
-static void __ibmvfc_reset_host(struct ibmvfc_host *vhost)
+static void ibmvfc_hard_reset_host(struct ibmvfc_host *vhost)
{
int rc;
@@ -826,9 +835,25 @@ static void __ibmvfc_reset_host(struct ibmvfc_host *vhost)
}
/**
- * ibmvfc_reset_host - Reset the connection to the server
+ * __ibmvfc_reset_host - Reset the connection to the server (no locking)
* @vhost: struct ibmvfc host to reset
**/
+static void __ibmvfc_reset_host(struct ibmvfc_host *vhost)
+{
+ if (vhost->logged_in && vhost->action != IBMVFC_HOST_ACTION_LOGO_WAIT &&
+ !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) {
+ scsi_block_requests(vhost->host);
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO);
+ vhost->job_step = ibmvfc_npiv_logout;
+ wake_up(&vhost->work_wait_q);
+ } else
+ ibmvfc_hard_reset_host(vhost);
+}
+
+/**
+ * ibmvfc_reset_host - Reset the connection to the server
+ * @vhost: ibmvfc host struct
+ **/
static void ibmvfc_reset_host(struct ibmvfc_host *vhost)
{
unsigned long flags;
@@ -842,9 +867,13 @@ static void ibmvfc_reset_host(struct ibmvfc_host *vhost)
* ibmvfc_retry_host_init - Retry host initialization if allowed
* @vhost: ibmvfc host struct
*
+ * Returns: 1 if init will be retried / 0 if not
+ *
**/
-static void ibmvfc_retry_host_init(struct ibmvfc_host *vhost)
+static int ibmvfc_retry_host_init(struct ibmvfc_host *vhost)
{
+ int retry = 0;
+
if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) {
vhost->delay_init = 1;
if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) {
@@ -853,11 +882,14 @@ static void ibmvfc_retry_host_init(struct ibmvfc_host *vhost)
ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE);
} else if (vhost->init_retries == IBMVFC_MAX_HOST_INIT_RETRIES)
__ibmvfc_reset_host(vhost);
- else
+ else {
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT);
+ retry = 1;
+ }
}
wake_up(&vhost->work_wait_q);
+ return retry;
}
/**
@@ -1137,8 +1169,9 @@ static void ibmvfc_set_login_info(struct ibmvfc_host *vhost)
login_info->partition_num = vhost->partition_number;
login_info->vfc_frame_version = 1;
login_info->fcp_version = 3;
+ login_info->flags = IBMVFC_FLUSH_ON_HALT;
if (vhost->client_migrated)
- login_info->flags = IBMVFC_CLIENT_MIGRATED;
+ login_info->flags |= IBMVFC_CLIENT_MIGRATED;
login_info->max_cmds = max_requests + IBMVFC_NUM_INTERNAL_REQ;
login_info->capabilities = IBMVFC_CAN_MIGRATE;
@@ -1452,6 +1485,27 @@ static void ibmvfc_log_error(struct ibmvfc_event *evt)
}
/**
+ * ibmvfc_relogin - Log back into the specified device
+ * @sdev: scsi device struct
+ *
+ **/
+static void ibmvfc_relogin(struct scsi_device *sdev)
+{
+ struct ibmvfc_host *vhost = shost_priv(sdev->host);
+ struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
+ struct ibmvfc_target *tgt;
+
+ list_for_each_entry(tgt, &vhost->targets, queue) {
+ if (rport == tgt->rport) {
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ break;
+ }
+ }
+
+ ibmvfc_reinit_host(vhost);
+}
+
+/**
* ibmvfc_scsi_done - Handle responses from commands
* @evt: ibmvfc event to be handled
*
@@ -1483,7 +1537,7 @@ static void ibmvfc_scsi_done(struct ibmvfc_event *evt)
if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len && rsp_len <= 8)
memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len);
if ((vfc_cmd->status & IBMVFC_VIOS_FAILURE) && (vfc_cmd->error == IBMVFC_PLOGI_REQUIRED))
- ibmvfc_reinit_host(evt->vhost);
+ ibmvfc_relogin(cmnd->device);
if (!cmnd->result && (!scsi_get_resid(cmnd) || (rsp->flags & FCP_RESID_OVER)))
cmnd->result = (DID_ERROR << 16);
@@ -2148,13 +2202,31 @@ static void ibmvfc_handle_async(struct ibmvfc_async_crq *crq,
struct ibmvfc_host *vhost)
{
const char *desc = ibmvfc_get_ae_desc(crq->event);
+ struct ibmvfc_target *tgt;
ibmvfc_log(vhost, 3, "%s event received. scsi_id: %llx, wwpn: %llx,"
" node_name: %llx\n", desc, crq->scsi_id, crq->wwpn, crq->node_name);
switch (crq->event) {
- case IBMVFC_AE_LINK_UP:
case IBMVFC_AE_RESUME:
+ switch (crq->link_state) {
+ case IBMVFC_AE_LS_LINK_DOWN:
+ ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN);
+ break;
+ case IBMVFC_AE_LS_LINK_DEAD:
+ ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD);
+ break;
+ case IBMVFC_AE_LS_LINK_UP:
+ case IBMVFC_AE_LS_LINK_BOUNCED:
+ default:
+ vhost->events_to_log |= IBMVFC_AE_LINKUP;
+ vhost->delay_init = 1;
+ __ibmvfc_reset_host(vhost);
+ break;
+ };
+
+ break;
+ case IBMVFC_AE_LINK_UP:
vhost->events_to_log |= IBMVFC_AE_LINKUP;
vhost->delay_init = 1;
__ibmvfc_reset_host(vhost);
@@ -2168,9 +2240,23 @@ static void ibmvfc_handle_async(struct ibmvfc_async_crq *crq,
case IBMVFC_AE_SCN_NPORT:
case IBMVFC_AE_SCN_GROUP:
vhost->events_to_log |= IBMVFC_AE_RSCN;
+ ibmvfc_reinit_host(vhost);
+ break;
case IBMVFC_AE_ELS_LOGO:
case IBMVFC_AE_ELS_PRLO:
case IBMVFC_AE_ELS_PLOGI:
+ list_for_each_entry(tgt, &vhost->targets, queue) {
+ if (!crq->scsi_id && !crq->wwpn && !crq->node_name)
+ break;
+ if (crq->scsi_id && tgt->scsi_id != crq->scsi_id)
+ continue;
+ if (crq->wwpn && tgt->ids.port_name != crq->wwpn)
+ continue;
+ if (crq->node_name && tgt->ids.node_name != crq->node_name)
+ continue;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ }
+
ibmvfc_reinit_host(vhost);
break;
case IBMVFC_AE_LINK_DOWN:
@@ -2222,6 +2308,7 @@ static void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost)
return;
case IBMVFC_CRQ_XPORT_EVENT:
vhost->state = IBMVFC_NO_CRQ;
+ vhost->logged_in = 0;
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
if (crq->format == IBMVFC_PARTITION_MIGRATED) {
/* We need to re-setup the interpartition connection */
@@ -2299,7 +2386,7 @@ static int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
done = 1;
}
- if (vhost->state != IBMVFC_NO_CRQ && vhost->action == IBMVFC_HOST_ACTION_NONE)
+ if (vhost->scan_complete)
done = 1;
spin_unlock_irqrestore(shost->host_lock, flags);
return done;
@@ -2434,14 +2521,6 @@ static ssize_t ibmvfc_show_host_partition_name(struct device *dev,
vhost->login_buf->resp.partition_name);
}
-static struct device_attribute ibmvfc_host_partition_name = {
- .attr = {
- .name = "partition_name",
- .mode = S_IRUGO,
- },
- .show = ibmvfc_show_host_partition_name,
-};
-
static ssize_t ibmvfc_show_host_device_name(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -2452,14 +2531,6 @@ static ssize_t ibmvfc_show_host_device_name(struct device *dev,
vhost->login_buf->resp.device_name);
}
-static struct device_attribute ibmvfc_host_device_name = {
- .attr = {
- .name = "device_name",
- .mode = S_IRUGO,
- },
- .show = ibmvfc_show_host_device_name,
-};
-
static ssize_t ibmvfc_show_host_loc_code(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -2470,14 +2541,6 @@ static ssize_t ibmvfc_show_host_loc_code(struct device *dev,
vhost->login_buf->resp.port_loc_code);
}
-static struct device_attribute ibmvfc_host_loc_code = {
- .attr = {
- .name = "port_loc_code",
- .mode = S_IRUGO,
- },
- .show = ibmvfc_show_host_loc_code,
-};
-
static ssize_t ibmvfc_show_host_drc_name(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -2488,14 +2551,6 @@ static ssize_t ibmvfc_show_host_drc_name(struct device *dev,
vhost->login_buf->resp.drc_name);
}
-static struct device_attribute ibmvfc_host_drc_name = {
- .attr = {
- .name = "drc_name",
- .mode = S_IRUGO,
- },
- .show = ibmvfc_show_host_drc_name,
-};
-
static ssize_t ibmvfc_show_host_npiv_version(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -2504,13 +2559,13 @@ static ssize_t ibmvfc_show_host_npiv_version(struct device *dev,
return snprintf(buf, PAGE_SIZE, "%d\n", vhost->login_buf->resp.version);
}
-static struct device_attribute ibmvfc_host_npiv_version = {
- .attr = {
- .name = "npiv_version",
- .mode = S_IRUGO,
- },
- .show = ibmvfc_show_host_npiv_version,
-};
+static ssize_t ibmvfc_show_host_capabilities(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct ibmvfc_host *vhost = shost_priv(shost);
+ return snprintf(buf, PAGE_SIZE, "%llx\n", vhost->login_buf->resp.capabilities);
+}
/**
* ibmvfc_show_log_level - Show the adapter's error logging level
@@ -2556,14 +2611,14 @@ static ssize_t ibmvfc_store_log_level(struct device *dev,
return strlen(buf);
}
-static struct device_attribute ibmvfc_log_level_attr = {
- .attr = {
- .name = "log_level",
- .mode = S_IRUGO | S_IWUSR,
- },
- .show = ibmvfc_show_log_level,
- .store = ibmvfc_store_log_level
-};
+static DEVICE_ATTR(partition_name, S_IRUGO, ibmvfc_show_host_partition_name, NULL);
+static DEVICE_ATTR(device_name, S_IRUGO, ibmvfc_show_host_device_name, NULL);
+static DEVICE_ATTR(port_loc_code, S_IRUGO, ibmvfc_show_host_loc_code, NULL);
+static DEVICE_ATTR(drc_name, S_IRUGO, ibmvfc_show_host_drc_name, NULL);
+static DEVICE_ATTR(npiv_version, S_IRUGO, ibmvfc_show_host_npiv_version, NULL);
+static DEVICE_ATTR(capabilities, S_IRUGO, ibmvfc_show_host_capabilities, NULL);
+static DEVICE_ATTR(log_level, S_IRUGO | S_IWUSR,
+ ibmvfc_show_log_level, ibmvfc_store_log_level);
#ifdef CONFIG_SCSI_IBMVFC_TRACE
/**
@@ -2612,12 +2667,13 @@ static struct bin_attribute ibmvfc_trace_attr = {
#endif
static struct device_attribute *ibmvfc_attrs[] = {
- &ibmvfc_host_partition_name,
- &ibmvfc_host_device_name,
- &ibmvfc_host_loc_code,
- &ibmvfc_host_drc_name,
- &ibmvfc_host_npiv_version,
- &ibmvfc_log_level_attr,
+ &dev_attr_partition_name,
+ &dev_attr_device_name,
+ &dev_attr_port_loc_code,
+ &dev_attr_drc_name,
+ &dev_attr_npiv_version,
+ &dev_attr_capabilities,
+ &dev_attr_log_level,
NULL
};
@@ -2774,15 +2830,19 @@ static void ibmvfc_init_tgt(struct ibmvfc_target *tgt,
* @tgt: ibmvfc target struct
* @job_step: initialization job step
*
+ * Returns: 1 if step will be retried / 0 if not
+ *
**/
-static void ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt,
+static int ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt,
void (*job_step) (struct ibmvfc_target *))
{
if (++tgt->init_retries > IBMVFC_MAX_TGT_INIT_RETRIES) {
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
wake_up(&tgt->vhost->work_wait_q);
+ return 0;
} else
ibmvfc_init_tgt(tgt, job_step);
+ return 1;
}
/* Defined in FC-LS */
@@ -2831,7 +2891,7 @@ static void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt)
struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli;
struct ibmvfc_prli_svc_parms *parms = &rsp->parms;
u32 status = rsp->common.status;
- int index;
+ int index, level = IBMVFC_DEFAULT_LOG_LEVEL;
vhost->discovery_threads--;
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
@@ -2850,7 +2910,7 @@ static void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt)
tgt->ids.roles |= FC_PORT_ROLE_FCP_TARGET;
if (parms->service_parms & IBMVFC_PRLI_INITIATOR_FUNC)
tgt->ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
- ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_ADD_RPORT);
+ tgt->add_rport = 1;
} else
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
} else if (prli_rsp[index].retry)
@@ -2867,13 +2927,14 @@ static void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt)
break;
case IBMVFC_MAD_FAILED:
default:
- tgt_err(tgt, "Process Login failed: %s (%x:%x) rc=0x%02X\n",
- ibmvfc_get_cmd_error(rsp->status, rsp->error),
- rsp->status, rsp->error, status);
if (ibmvfc_retry_cmd(rsp->status, rsp->error))
- ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli);
+ level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli);
else
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+
+ tgt_log(tgt, level, "Process Login failed: %s (%x:%x) rc=0x%02X\n",
+ ibmvfc_get_cmd_error(rsp->status, rsp->error),
+ rsp->status, rsp->error, status);
break;
};
@@ -2932,6 +2993,7 @@ static void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt)
struct ibmvfc_host *vhost = evt->vhost;
struct ibmvfc_port_login *rsp = &evt->xfer_iu->plogi;
u32 status = rsp->common.status;
+ int level = IBMVFC_DEFAULT_LOG_LEVEL;
vhost->discovery_threads--;
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
@@ -2960,15 +3022,15 @@ static void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt)
break;
case IBMVFC_MAD_FAILED:
default:
- tgt_err(tgt, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n",
- ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error,
- ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type,
- ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status);
-
if (ibmvfc_retry_cmd(rsp->status, rsp->error))
- ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi);
+ level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi);
else
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+
+ tgt_log(tgt, level, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n",
+ ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error,
+ ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type,
+ ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status);
break;
};
@@ -3129,13 +3191,13 @@ static void ibmvfc_tgt_adisc_done(struct ibmvfc_event *evt)
case IBMVFC_MAD_SUCCESS:
tgt_dbg(tgt, "ADISC succeeded\n");
if (ibmvfc_adisc_needs_plogi(mad, tgt))
- tgt->need_login = 1;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
break;
case IBMVFC_MAD_DRIVER_FAILED:
break;
case IBMVFC_MAD_FAILED:
default:
- tgt->need_login = 1;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
fc_reason = (mad->fc_iu.response[1] & 0x00ff0000) >> 16;
fc_explain = (mad->fc_iu.response[1] & 0x0000ff00) >> 8;
tgt_info(tgt, "ADISC failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n",
@@ -3322,6 +3384,7 @@ static void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt)
struct ibmvfc_host *vhost = evt->vhost;
struct ibmvfc_query_tgt *rsp = &evt->xfer_iu->query_tgt;
u32 status = rsp->common.status;
+ int level = IBMVFC_DEFAULT_LOG_LEVEL;
vhost->discovery_threads--;
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
@@ -3341,19 +3404,19 @@ static void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt)
break;
case IBMVFC_MAD_FAILED:
default:
- tgt_err(tgt, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n",
- ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error,
- ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type,
- ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status);
-
if ((rsp->status & IBMVFC_FABRIC_MAPPED) == IBMVFC_FABRIC_MAPPED &&
rsp->error == IBMVFC_UNABLE_TO_PERFORM_REQ &&
rsp->fc_explain == IBMVFC_PORT_NAME_NOT_REG)
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
else if (ibmvfc_retry_cmd(rsp->status, rsp->error))
- ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target);
+ level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target);
else
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+
+ tgt_log(tgt, level, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n",
+ ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error,
+ ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type,
+ ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status);
break;
};
@@ -3420,7 +3483,7 @@ static int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id)
}
spin_unlock_irqrestore(vhost->host->host_lock, flags);
- tgt = mempool_alloc(vhost->tgt_pool, GFP_KERNEL);
+ tgt = mempool_alloc(vhost->tgt_pool, GFP_NOIO);
if (!tgt) {
dev_err(vhost->dev, "Target allocation failure for scsi id %08llx\n",
scsi_id);
@@ -3472,6 +3535,7 @@ static void ibmvfc_discover_targets_done(struct ibmvfc_event *evt)
struct ibmvfc_host *vhost = evt->vhost;
struct ibmvfc_discover_targets *rsp = &evt->xfer_iu->discover_targets;
u32 mad_status = rsp->common.status;
+ int level = IBMVFC_DEFAULT_LOG_LEVEL;
switch (mad_status) {
case IBMVFC_MAD_SUCCESS:
@@ -3480,9 +3544,9 @@ static void ibmvfc_discover_targets_done(struct ibmvfc_event *evt)
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS);
break;
case IBMVFC_MAD_FAILED:
- dev_err(vhost->dev, "Discover Targets failed: %s (%x:%x)\n",
- ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error);
- ibmvfc_retry_host_init(vhost);
+ level += ibmvfc_retry_host_init(vhost);
+ ibmvfc_log(vhost, level, "Discover Targets failed: %s (%x:%x)\n",
+ ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error);
break;
case IBMVFC_MAD_DRIVER_FAILED:
break;
@@ -3534,18 +3598,19 @@ static void ibmvfc_npiv_login_done(struct ibmvfc_event *evt)
u32 mad_status = evt->xfer_iu->npiv_login.common.status;
struct ibmvfc_npiv_login_resp *rsp = &vhost->login_buf->resp;
unsigned int npiv_max_sectors;
+ int level = IBMVFC_DEFAULT_LOG_LEVEL;
switch (mad_status) {
case IBMVFC_MAD_SUCCESS:
ibmvfc_free_event(evt);
break;
case IBMVFC_MAD_FAILED:
- dev_err(vhost->dev, "NPIV Login failed: %s (%x:%x)\n",
- ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error);
if (ibmvfc_retry_cmd(rsp->status, rsp->error))
- ibmvfc_retry_host_init(vhost);
+ level += ibmvfc_retry_host_init(vhost);
else
ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD);
+ ibmvfc_log(vhost, level, "NPIV Login failed: %s (%x:%x)\n",
+ ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error);
ibmvfc_free_event(evt);
return;
case IBMVFC_MAD_CRQ_ERROR:
@@ -3578,6 +3643,7 @@ static void ibmvfc_npiv_login_done(struct ibmvfc_event *evt)
return;
}
+ vhost->logged_in = 1;
npiv_max_sectors = min((uint)(rsp->max_dma_len >> 9), IBMVFC_MAX_SECTORS);
dev_info(vhost->dev, "Host partition: %s, device: %s %s %s max sectors %u\n",
rsp->partition_name, rsp->device_name, rsp->port_loc_code,
@@ -3636,6 +3702,65 @@ static void ibmvfc_npiv_login(struct ibmvfc_host *vhost)
};
/**
+ * ibmvfc_npiv_logout_done - Completion handler for NPIV Logout
+ * @vhost: ibmvfc host struct
+ *
+ **/
+static void ibmvfc_npiv_logout_done(struct ibmvfc_event *evt)
+{
+ struct ibmvfc_host *vhost = evt->vhost;
+ u32 mad_status = evt->xfer_iu->npiv_logout.common.status;
+
+ ibmvfc_free_event(evt);
+
+ switch (mad_status) {
+ case IBMVFC_MAD_SUCCESS:
+ if (list_empty(&vhost->sent) &&
+ vhost->action == IBMVFC_HOST_ACTION_LOGO_WAIT) {
+ ibmvfc_init_host(vhost, 0);
+ return;
+ }
+ break;
+ case IBMVFC_MAD_FAILED:
+ case IBMVFC_MAD_NOT_SUPPORTED:
+ case IBMVFC_MAD_CRQ_ERROR:
+ case IBMVFC_MAD_DRIVER_FAILED:
+ default:
+ ibmvfc_dbg(vhost, "NPIV Logout failed. 0x%X\n", mad_status);
+ break;
+ }
+
+ ibmvfc_hard_reset_host(vhost);
+}
+
+/**
+ * ibmvfc_npiv_logout - Issue an NPIV Logout
+ * @vhost: ibmvfc host struct
+ *
+ **/
+static void ibmvfc_npiv_logout(struct ibmvfc_host *vhost)
+{
+ struct ibmvfc_npiv_logout_mad *mad;
+ struct ibmvfc_event *evt;
+
+ evt = ibmvfc_get_event(vhost);
+ ibmvfc_init_event(evt, ibmvfc_npiv_logout_done, IBMVFC_MAD_FORMAT);
+
+ mad = &evt->iu.npiv_logout;
+ memset(mad, 0, sizeof(*mad));
+ mad->common.version = 1;
+ mad->common.opcode = IBMVFC_NPIV_LOGOUT;
+ mad->common.length = sizeof(struct ibmvfc_npiv_logout_mad);
+
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO_WAIT);
+
+ if (!ibmvfc_send_event(evt, vhost, default_timeout))
+ ibmvfc_dbg(vhost, "Sent NPIV logout\n");
+ else
+ ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD);
+}
+
+/**
* ibmvfc_dev_init_to_do - Is there target initialization work to do?
* @vhost: ibmvfc host struct
*
@@ -3671,6 +3796,7 @@ static int __ibmvfc_work_to_do(struct ibmvfc_host *vhost)
switch (vhost->action) {
case IBMVFC_HOST_ACTION_NONE:
case IBMVFC_HOST_ACTION_INIT_WAIT:
+ case IBMVFC_HOST_ACTION_LOGO_WAIT:
return 0;
case IBMVFC_HOST_ACTION_TGT_INIT:
case IBMVFC_HOST_ACTION_QUERY_TGTS:
@@ -3683,9 +3809,9 @@ static int __ibmvfc_work_to_do(struct ibmvfc_host *vhost)
if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT)
return 0;
return 1;
+ case IBMVFC_HOST_ACTION_LOGO:
case IBMVFC_HOST_ACTION_INIT:
case IBMVFC_HOST_ACTION_ALLOC_TGTS:
- case IBMVFC_HOST_ACTION_TGT_ADD:
case IBMVFC_HOST_ACTION_TGT_DEL:
case IBMVFC_HOST_ACTION_TGT_DEL_FAILED:
case IBMVFC_HOST_ACTION_QUERY:
@@ -3740,25 +3866,26 @@ static void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events)
static void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt)
{
struct ibmvfc_host *vhost = tgt->vhost;
- struct fc_rport *rport = tgt->rport;
+ struct fc_rport *rport;
unsigned long flags;
- if (rport) {
- tgt_dbg(tgt, "Setting rport roles\n");
- fc_remote_port_rolechg(rport, tgt->ids.roles);
- spin_lock_irqsave(vhost->host->host_lock, flags);
- ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
+ tgt_dbg(tgt, "Adding rport\n");
+ rport = fc_remote_port_add(vhost->host, 0, &tgt->ids);
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+
+ if (rport && tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) {
+ tgt_dbg(tgt, "Deleting rport\n");
+ list_del(&tgt->queue);
spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ fc_remote_port_delete(rport);
+ del_timer_sync(&tgt->timer);
+ kref_put(&tgt->kref, ibmvfc_release_tgt);
return;
}
- tgt_dbg(tgt, "Adding rport\n");
- rport = fc_remote_port_add(vhost->host, 0, &tgt->ids);
- spin_lock_irqsave(vhost->host->host_lock, flags);
- tgt->rport = rport;
- ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
if (rport) {
tgt_dbg(tgt, "rport add succeeded\n");
+ tgt->rport = rport;
rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff;
rport->supported_classes = 0;
tgt->target_id = rport->scsi_target_id;
@@ -3789,8 +3916,12 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
vhost->events_to_log = 0;
switch (vhost->action) {
case IBMVFC_HOST_ACTION_NONE:
+ case IBMVFC_HOST_ACTION_LOGO_WAIT:
case IBMVFC_HOST_ACTION_INIT_WAIT:
break;
+ case IBMVFC_HOST_ACTION_LOGO:
+ vhost->job_step(vhost);
+ break;
case IBMVFC_HOST_ACTION_INIT:
BUG_ON(vhost->state != IBMVFC_INITIALIZING);
if (vhost->delay_init) {
@@ -3836,11 +3967,21 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
if (vhost->state == IBMVFC_INITIALIZING) {
if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) {
- ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE);
- ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_ADD);
- vhost->init_retries = 0;
- spin_unlock_irqrestore(vhost->host->host_lock, flags);
- scsi_unblock_requests(vhost->host);
+ if (vhost->reinit) {
+ vhost->reinit = 0;
+ scsi_block_requests(vhost->host);
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ } else {
+ ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE);
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
+ wake_up(&vhost->init_wait_q);
+ schedule_work(&vhost->rport_add_work_q);
+ vhost->init_retries = 0;
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ scsi_unblock_requests(vhost->host);
+ }
+
return;
} else {
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT);
@@ -3871,24 +4012,6 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
if (!ibmvfc_dev_init_to_do(vhost))
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED);
break;
- case IBMVFC_HOST_ACTION_TGT_ADD:
- list_for_each_entry(tgt, &vhost->targets, queue) {
- if (tgt->action == IBMVFC_TGT_ACTION_ADD_RPORT) {
- spin_unlock_irqrestore(vhost->host->host_lock, flags);
- ibmvfc_tgt_add_rport(tgt);
- return;
- }
- }
-
- if (vhost->reinit && !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) {
- vhost->reinit = 0;
- scsi_block_requests(vhost->host);
- ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY);
- } else {
- ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
- wake_up(&vhost->init_wait_q);
- }
- break;
default:
break;
};
@@ -4118,6 +4241,56 @@ nomem:
}
/**
+ * ibmvfc_rport_add_thread - Worker thread for rport adds
+ * @work: work struct
+ *
+ **/
+static void ibmvfc_rport_add_thread(struct work_struct *work)
+{
+ struct ibmvfc_host *vhost = container_of(work, struct ibmvfc_host,
+ rport_add_work_q);
+ struct ibmvfc_target *tgt;
+ struct fc_rport *rport;
+ unsigned long flags;
+ int did_work;
+
+ ENTER;
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ do {
+ did_work = 0;
+ if (vhost->state != IBMVFC_ACTIVE)
+ break;
+
+ list_for_each_entry(tgt, &vhost->targets, queue) {
+ if (tgt->add_rport) {
+ did_work = 1;
+ tgt->add_rport = 0;
+ kref_get(&tgt->kref);
+ rport = tgt->rport;
+ if (!rport) {
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ ibmvfc_tgt_add_rport(tgt);
+ } else if (get_device(&rport->dev)) {
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ tgt_dbg(tgt, "Setting rport roles\n");
+ fc_remote_port_rolechg(rport, tgt->ids.roles);
+ put_device(&rport->dev);
+ }
+
+ kref_put(&tgt->kref, ibmvfc_release_tgt);
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ break;
+ }
+ }
+ } while(did_work);
+
+ if (vhost->state == IBMVFC_ACTIVE)
+ vhost->scan_complete = 1;
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ LEAVE;
+}
+
+/**
* ibmvfc_probe - Adapter hot plug add entry point
* @vdev: vio device struct
* @id: vio device id struct
@@ -4160,6 +4333,7 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
strcpy(vhost->partition_name, "UNKNOWN");
init_waitqueue_head(&vhost->work_wait_q);
init_waitqueue_head(&vhost->init_wait_q);
+ INIT_WORK(&vhost->rport_add_work_q, ibmvfc_rport_add_thread);
if ((rc = ibmvfc_alloc_mem(vhost)))
goto free_scsi_host;