nvme-rdma: use NVME_CTRL_CONNECTING state to mark init process

In order to avoid concurrent error recovery during initialization
process (allowed by the NVME_CTRL_NEW --> NVME_CTRL_RESETTING transition)
we must mark the ctrl as CONNECTING before initial connection
establisment.

Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 1033de4..86dca29 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -296,6 +296,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
                break;
        case NVME_CTRL_CONNECTING:
                switch (old_state) {
+               case NVME_CTRL_NEW:
                case NVME_CTRL_LIVE:
                case NVME_CTRL_RESETTING:
                        changed = true;

diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 050eaa2..5e2cc4f 100644 (file)
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -1942,6 +1942,9 @@ static struct nvme_ctrl *nvme_rdma_create_ctrl(struct device *dev,
        if (!ctrl->queues)
                goto out_uninit_ctrl;
 
+       changed = nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING);
+       WARN_ON_ONCE(!changed);
+
        ret = nvme_rdma_configure_admin_queue(ctrl, true);
        if (ret)
                goto out_kfree_queues;