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nvme-fc: short-circuit reconnect retries

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Returning an nvme status from nvme_fc_create_association() indicates
that the association is established, and we should honour the DNR bit.
If it's set a reconnect attempt will just return the same error, so
we can short-circuit the reconnect attempts and fail the connection
directly.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Hannes Reinecke 2021-05-21 10:23:00 +02:00 committed by Christoph Hellwig
parent 3596a06583
commit f25f8ef70c
1 changed files with 17 additions and 8 deletions
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25
drivers/nvme/host/fc.c
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@ -3107,6 +3107,7 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
if (ctrl->ctrl.icdoff) {
dev_err(ctrl->ctrl.device, "icdoff %d is not supported!\n",
ctrl->ctrl.icdoff);
ret = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
goto out_disconnect_admin_queue;
}
@ -3114,6 +3115,7 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
if (!(ctrl->ctrl.sgls & ((1 << 0) | (1 << 1)))) {
dev_err(ctrl->ctrl.device,
"Mandatory sgls are not supported!\n");
ret = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
goto out_disconnect_admin_queue;
}
@ -3280,11 +3282,13 @@ nvme_fc_reconnect_or_delete(struct nvme_fc_ctrl *ctrl, int status)
if (ctrl->ctrl.state != NVME_CTRL_CONNECTING)
return;
if (portptr->port_state == FC_OBJSTATE_ONLINE)
if (portptr->port_state == FC_OBJSTATE_ONLINE) {
dev_info(ctrl->ctrl.device,
"NVME-FC{%d}: reset: Reconnect attempt failed (%d)\n",
ctrl->cnum, status);
else if (time_after_eq(jiffies, rport->dev_loss_end))
if (status > 0 && (status & NVME_SC_DNR))
recon = false;
} else if (time_after_eq(jiffies, rport->dev_loss_end))
recon = false;
if (recon && nvmf_should_reconnect(&ctrl->ctrl)) {
@ -3298,12 +3302,17 @@ nvme_fc_reconnect_or_delete(struct nvme_fc_ctrl *ctrl, int status)
queue_delayed_work(nvme_wq, &ctrl->connect_work, recon_delay);
} else {
if (portptr->port_state == FC_OBJSTATE_ONLINE)
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: Max reconnect attempts (%d) "
"reached.\n",
ctrl->cnum, ctrl->ctrl.nr_reconnects);
else
if (portptr->port_state == FC_OBJSTATE_ONLINE) {
if (status > 0 && (status & NVME_SC_DNR))
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: reconnect failure\n",
ctrl->cnum);
else
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: Max reconnect attempts "
"(%d) reached.\n",
ctrl->cnum, ctrl->ctrl.nr_reconnects);
} else
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: dev_loss_tmo (%d) expired "
"while waiting for remoteport connectivity.\n",