static void ibmvfc_tgt_query_target(struct ibmvfc_target *);
static void ibmvfc_npiv_logout(struct ibmvfc_host *);
static void ibmvfc_tgt_implicit_logout_and_del(struct ibmvfc_target *);
+static void ibmvfc_tgt_move_login(struct ibmvfc_target *);
static const char *unknown_error = "unknown error";
}
break;
case IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT:
- if (action == IBMVFC_TGT_ACTION_DEL_RPORT) {
+ if (action == IBMVFC_TGT_ACTION_DEL_RPORT ||
+ action == IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT) {
+ tgt->action = action;
+ rc = 0;
+ }
+ break;
+ case IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT:
+ if (action == IBMVFC_TGT_ACTION_LOGOUT_RPORT) {
+ tgt->action = action;
+ rc = 0;
+ }
+ break;
+ case IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT:
+ if (action == IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT) {
tgt->action = action;
rc = 0;
}
tgt->action = action;
rc = 0;
}
+ break;
case IBMVFC_TGT_ACTION_DELETED_RPORT:
break;
default:
- if (action >= IBMVFC_TGT_ACTION_LOGOUT_RPORT)
- tgt->add_rport = 0;
tgt->action = action;
rc = 0;
break;
}
+ if (action >= IBMVFC_TGT_ACTION_LOGOUT_RPORT)
+ tgt->add_rport = 0;
+
return rc;
}
**/
static void ibmvfc_reinit_host(struct ibmvfc_host *vhost)
{
- if (vhost->action == IBMVFC_HOST_ACTION_NONE) {
+ if (vhost->action == IBMVFC_HOST_ACTION_NONE &&
+ vhost->state == IBMVFC_ACTIVE) {
if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) {
scsi_block_requests(vhost->host);
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY);
struct ibmvfc_host *vhost = shost_priv(shost);
struct fc_rport *dev_rport;
struct scsi_device *sdev;
- unsigned long rc;
+ struct ibmvfc_target *tgt;
+ unsigned long rc, flags;
+ unsigned int found;
ENTER;
shost_for_each_device(sdev, shost) {
if (rc == FAILED)
ibmvfc_issue_fc_host_lip(shost);
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ found = 0;
+ list_for_each_entry(tgt, &vhost->targets, queue) {
+ if (tgt->scsi_id == rport->port_id) {
+ found++;
+ break;
+ }
+ }
+
+ if (found && tgt->action == IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT) {
+ /*
+ * If we get here, that means we previously attempted to send
+ * an implicit logout to the target but it failed, most likely
+ * due to I/O being pending, so we need to send it again
+ */
+ ibmvfc_del_tgt(tgt);
+ ibmvfc_reinit_host(vhost);
+ }
+
+ spin_unlock_irqrestore(shost->host_lock, flags);
LEAVE;
}
vhost->discovery_threads--;
ibmvfc_free_event(evt);
- ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+
+ /*
+ * If our state is IBMVFC_HOST_OFFLINE, we could be unloading the
+ * driver in which case we need to free up all the targets. If we are
+ * not unloading, we will still go through a hard reset to get out of
+ * offline state, so there is no need to track the old targets in that
+ * case.
+ */
+ if (status == IBMVFC_MAD_SUCCESS || vhost->state == IBMVFC_HOST_OFFLINE)
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ else
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT);
tgt_dbg(tgt, "Implicit Logout %s\n", (status == IBMVFC_MAD_SUCCESS) ? "succeeded" : "failed");
kref_put(&tgt->kref, ibmvfc_release_tgt);
tgt_dbg(tgt, "Sent Implicit Logout\n");
}
+/**
+ * ibmvfc_tgt_move_login_done - Completion handler for Move Login
+ * @evt: ibmvfc event struct
+ *
+ **/
+static void ibmvfc_tgt_move_login_done(struct ibmvfc_event *evt)
+{
+ struct ibmvfc_target *tgt = evt->tgt;
+ struct ibmvfc_host *vhost = evt->vhost;
+ struct ibmvfc_move_login *rsp = &evt->xfer_iu->move_login;
+ u32 status = be16_to_cpu(rsp->common.status);
+ int level = IBMVFC_DEFAULT_LOG_LEVEL;
+
+ vhost->discovery_threads--;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
+ switch (status) {
+ case IBMVFC_MAD_SUCCESS:
+ tgt_dbg(tgt, "Move Login succeeded for old scsi_id: %llX\n", tgt->old_scsi_id);
+ tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name);
+ tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name);
+ tgt->ids.port_id = tgt->scsi_id;
+ memcpy(&tgt->service_parms, &rsp->service_parms,
+ sizeof(tgt->service_parms));
+ memcpy(&tgt->service_parms_change, &rsp->service_parms_change,
+ sizeof(tgt->service_parms_change));
+ ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_prli);
+ break;
+ case IBMVFC_MAD_DRIVER_FAILED:
+ break;
+ case IBMVFC_MAD_CRQ_ERROR:
+ ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_move_login);
+ break;
+ case IBMVFC_MAD_FAILED:
+ default:
+ level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_move_login);
+
+ tgt_log(tgt, level,
+ "Move Login failed: old scsi_id: %llX, flags:%x, vios_flags:%x, rc=0x%02X\n",
+ tgt->old_scsi_id, be32_to_cpu(rsp->flags), be16_to_cpu(rsp->vios_flags),
+ status);
+ break;
+ }
+
+ kref_put(&tgt->kref, ibmvfc_release_tgt);
+ ibmvfc_free_event(evt);
+ wake_up(&vhost->work_wait_q);
+}
+
+
+/**
+ * ibmvfc_tgt_move_login - Initiate a move login for specified target
+ * @tgt: ibmvfc target struct
+ *
+ **/
+static void ibmvfc_tgt_move_login(struct ibmvfc_target *tgt)
+{
+ struct ibmvfc_host *vhost = tgt->vhost;
+ struct ibmvfc_move_login *move;
+ struct ibmvfc_event *evt;
+
+ if (vhost->discovery_threads >= disc_threads)
+ return;
+
+ kref_get(&tgt->kref);
+ evt = ibmvfc_get_event(vhost);
+ vhost->discovery_threads++;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT);
+ ibmvfc_init_event(evt, ibmvfc_tgt_move_login_done, IBMVFC_MAD_FORMAT);
+ evt->tgt = tgt;
+ move = &evt->iu.move_login;
+ memset(move, 0, sizeof(*move));
+ move->common.version = cpu_to_be32(1);
+ move->common.opcode = cpu_to_be32(IBMVFC_MOVE_LOGIN);
+ move->common.length = cpu_to_be16(sizeof(*move));
+
+ move->old_scsi_id = cpu_to_be64(tgt->old_scsi_id);
+ move->new_scsi_id = cpu_to_be64(tgt->scsi_id);
+ move->wwpn = cpu_to_be64(tgt->wwpn);
+ move->node_name = cpu_to_be64(tgt->ids.node_name);
+
+ if (ibmvfc_send_event(evt, vhost, default_timeout)) {
+ vhost->discovery_threads--;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ kref_put(&tgt->kref, ibmvfc_release_tgt);
+ } else
+ tgt_dbg(tgt, "Sent Move Login for old scsi_id: %llX\n", tgt->old_scsi_id);
+}
+
/**
* ibmvfc_adisc_needs_plogi - Does device need PLOGI?
* @mad: ibmvfc passthru mad struct
* Returns:
* 0 on success / other on failure
**/
-static int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id)
+static int ibmvfc_alloc_target(struct ibmvfc_host *vhost,
+ struct ibmvfc_discover_targets_entry *target)
{
+ struct ibmvfc_target *stgt = NULL;
+ struct ibmvfc_target *wtgt = NULL;
struct ibmvfc_target *tgt;
unsigned long flags;
+ u64 scsi_id = be32_to_cpu(target->scsi_id) & IBMVFC_DISC_TGT_SCSI_ID_MASK;
+ u64 wwpn = be64_to_cpu(target->wwpn);
+ /* Look to see if we already have a target allocated for this SCSI ID or WWPN */
spin_lock_irqsave(vhost->host->host_lock, flags);
+ list_for_each_entry(tgt, &vhost->targets, queue) {
+ if (tgt->wwpn == wwpn) {
+ wtgt = tgt;
+ break;
+ }
+ }
+
list_for_each_entry(tgt, &vhost->targets, queue) {
if (tgt->scsi_id == scsi_id) {
- if (tgt->need_login)
- ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout);
+ stgt = tgt;
+ break;
+ }
+ }
+
+ if (wtgt && !stgt) {
+ /*
+ * A WWPN target has moved and we still are tracking the old
+ * SCSI ID. The only way we should be able to get here is if
+ * we attempted to send an implicit logout for the old SCSI ID
+ * and it failed for some reason, such as there being I/O
+ * pending to the target. In this case, we will have already
+ * deleted the rport from the FC transport so we do a move
+ * login, which works even with I/O pending, as it will cancel
+ * any active commands.
+ */
+ if (wtgt->action == IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT) {
+ /*
+ * Do a move login here. The old target is no longer
+ * known to the transport layer We don't use the
+ * normal ibmvfc_set_tgt_action to set this, as we
+ * don't normally want to allow this state change.
+ */
+ wtgt->old_scsi_id = wtgt->scsi_id;
+ wtgt->scsi_id = scsi_id;
+ wtgt->action = IBMVFC_TGT_ACTION_INIT;
+ ibmvfc_init_tgt(wtgt, ibmvfc_tgt_move_login);
goto unlock_out;
+ } else {
+ tgt_err(wtgt, "Unexpected target state: %d, %p\n",
+ wtgt->action, wtgt->rport);
}
+ } else if (stgt) {
+ if (tgt->need_login)
+ ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout);
+ goto unlock_out;
}
spin_unlock_irqrestore(vhost->host->host_lock, flags);
tgt = mempool_alloc(vhost->tgt_pool, GFP_NOIO);
memset(tgt, 0, sizeof(*tgt));
tgt->scsi_id = scsi_id;
+ tgt->wwpn = wwpn;
tgt->vhost = vhost;
tgt->need_login = 1;
- tgt->cancel_key = vhost->task_set++;
timer_setup(&tgt->timer, ibmvfc_adisc_timeout, 0);
kref_init(&tgt->kref);
ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout);
spin_lock_irqsave(vhost->host->host_lock, flags);
+ tgt->cancel_key = vhost->task_set++;
list_add_tail(&tgt->queue, &vhost->targets);
unlock_out:
int i, rc;
for (i = 0, rc = 0; !rc && i < vhost->num_targets; i++)
- rc = ibmvfc_alloc_target(vhost,
- be32_to_cpu(vhost->disc_buf->scsi_id[i]) &
- IBMVFC_DISC_TGT_SCSI_ID_MASK);
+ rc = ibmvfc_alloc_target(vhost, &vhost->disc_buf[i]);
return rc;
}
mad->bufflen = cpu_to_be32(vhost->disc_buf_sz);
mad->buffer.va = cpu_to_be64(vhost->disc_buf_dma);
mad->buffer.len = cpu_to_be32(vhost->disc_buf_sz);
+ mad->flags = cpu_to_be32(IBMVFC_DISC_TGT_PORT_ID_WWPN_LIST);
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT);
if (!ibmvfc_send_event(evt, vhost, default_timeout))
del_timer_sync(&tgt->timer);
kref_put(&tgt->kref, ibmvfc_release_tgt);
return;
+ } else if (rport && tgt->action == IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT) {
+ tgt_dbg(tgt, "Deleting rport with outstanding I/O\n");
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT);
+ tgt->rport = NULL;
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ fc_remote_port_delete(rport);
+ return;
} else if (rport && tgt->action == IBMVFC_TGT_ACTION_DELETED_RPORT) {
spin_unlock_irqrestore(vhost->host->host_lock, flags);
return;
del_timer_sync(&tgt->timer);
kref_put(&tgt->kref, ibmvfc_release_tgt);
return;
+ } else if (tgt->action == IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT) {
+ tgt_dbg(tgt, "Deleting rport with I/O outstanding\n");
+ rport = tgt->rport;
+ tgt->rport = NULL;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ if (rport)
+ fc_remote_port_delete(rport);
+ return;
}
}
goto free_sg_pool;
}
- vhost->disc_buf_sz = sizeof(vhost->disc_buf->scsi_id[0]) * max_targets;
+ vhost->disc_buf_sz = sizeof(*vhost->disc_buf) * max_targets;
vhost->disc_buf = dma_alloc_coherent(dev, vhost->disc_buf_sz,
&vhost->disc_buf_dma, GFP_KERNEL);
if (IS_ERR(vhost->work_thread)) {
dev_err(dev, "Couldn't create kernel thread: %ld\n",
PTR_ERR(vhost->work_thread));
+ rc = PTR_ERR(vhost->work_thread);
goto free_host_mem;
}
projects / linux-2.6-microblaze.git / blobdiff