nvme-fc: fix nulling of queue data on reconnect

The reconnect path is calling the init routines to clear a queue
structure. But the queue structure has state that perhaps needs
to persist as long as the controller is live.

Remove the nvme_fc_init_queue() calls on reconnect.
The nvme_fc_free_queue() calls will clear state bits and reset
any relevant queue state for a new connection.

Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 36e72e6..318e827 100644 (file)
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -1879,6 +1879,7 @@ nvme_fc_free_queue(struct nvme_fc_queue *queue)
         */
 
        queue->connection_id = 0;
+       atomic_set(&queue->csn, 1);
 }
 
 static void
@@ -2468,7 +2469,7 @@ out_free_tag_set:
 }
 
 static int
-nvme_fc_reinit_io_queues(struct nvme_fc_ctrl *ctrl)
+nvme_fc_recreate_io_queues(struct nvme_fc_ctrl *ctrl)
 {
        struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;
        unsigned int nr_io_queues;
@@ -2488,8 +2489,6 @@ nvme_fc_reinit_io_queues(struct nvme_fc_ctrl *ctrl)
        if (ctrl->ctrl.queue_count == 1)
                return 0;
 
-       nvme_fc_init_io_queues(ctrl);
-
        ret = nvme_fc_create_hw_io_queues(ctrl, ctrl->ctrl.sqsize + 1);
        if (ret)
                goto out_free_io_queues;
@@ -2587,8 +2586,6 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
         * Create the admin queue
         */
 
-       nvme_fc_init_queue(ctrl, 0);
-
        ret = __nvme_fc_create_hw_queue(ctrl, &ctrl->queues[0], 0,
                                NVME_AQ_DEPTH);
        if (ret)
@@ -2675,7 +2672,7 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
                if (!ctrl->ioq_live)
                        ret = nvme_fc_create_io_queues(ctrl);
                else
-                       ret = nvme_fc_reinit_io_queues(ctrl);
+                       ret = nvme_fc_recreate_io_queues(ctrl);
                if (ret)
                        goto out_term_aen_ops;
        }
@@ -3023,6 +3020,8 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
        if (!ctrl->queues)
                goto out_free_ida;
 
+       nvme_fc_init_queue(ctrl, 0);
+
        memset(&ctrl->admin_tag_set, 0, sizeof(ctrl->admin_tag_set));
        ctrl->admin_tag_set.ops = &nvme_fc_admin_mq_ops;
        ctrl->admin_tag_set.queue_depth = NVME_AQ_MQ_TAG_DEPTH;