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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
nvme-rdma: centralize controller setup sequence
Centralize controller sequence to a single routine that correctly cleans up after failures instead of having multiple apperances in several flows (create, reset, reconnect). One thing that we also gain here are the sanity/boundary checks also when connecting back to a dynamic controller. Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sagi Grimberg
Christoph Hellwig
parent
90140624e8
commit
c66e2998c8
1 changed files with 53 additions and 77 deletions
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@ -917,24 +917,44 @@ static void nvme_rdma_reconnect_or_remove(struct nvme_rdma_ctrl *ctrl)
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}
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}
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static void nvme_rdma_reconnect_ctrl_work(struct work_struct *work)
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static int nvme_rdma_setup_ctrl(struct nvme_rdma_ctrl *ctrl, bool new)
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{
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struct nvme_rdma_ctrl *ctrl = container_of(to_delayed_work(work),
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struct nvme_rdma_ctrl, reconnect_work);
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int ret = -EINVAL;
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bool changed;
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int ret;
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++ctrl->ctrl.nr_reconnects;
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ret = nvme_rdma_configure_admin_queue(ctrl, false);
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ret = nvme_rdma_configure_admin_queue(ctrl, new);
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if (ret)
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goto requeue;
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return ret;
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if (ctrl->ctrl.icdoff) {
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dev_err(ctrl->ctrl.device, "icdoff is not supported!\n");
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goto destroy_admin;
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}
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if (!(ctrl->ctrl.sgls & (1 << 2))) {
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dev_err(ctrl->ctrl.device,
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"Mandatory keyed sgls are not supported!\n");
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goto destroy_admin;
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}
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if (ctrl->ctrl.opts->queue_size > ctrl->ctrl.sqsize + 1) {
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dev_warn(ctrl->ctrl.device,
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"queue_size %zu > ctrl sqsize %u, clamping down\n",
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ctrl->ctrl.opts->queue_size, ctrl->ctrl.sqsize + 1);
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}
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if (ctrl->ctrl.sqsize + 1 > ctrl->ctrl.maxcmd) {
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dev_warn(ctrl->ctrl.device,
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"sqsize %u > ctrl maxcmd %u, clamping down\n",
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ctrl->ctrl.sqsize + 1, ctrl->ctrl.maxcmd);
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ctrl->ctrl.sqsize = ctrl->ctrl.maxcmd - 1;
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}
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if (ctrl->ctrl.sgls & (1 << 20))
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ctrl->use_inline_data = true;
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if (ctrl->ctrl.queue_count > 1) {
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ret = nvme_rdma_configure_io_queues(ctrl, false);
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ret = nvme_rdma_configure_io_queues(ctrl, new);
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if (ret)
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goto destroy_admin;
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}
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@ -943,10 +963,31 @@ static void nvme_rdma_reconnect_ctrl_work(struct work_struct *work)
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if (!changed) {
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/* state change failure is ok if we're in DELETING state */
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WARN_ON_ONCE(ctrl->ctrl.state != NVME_CTRL_DELETING);
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return;
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ret = -EINVAL;
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goto destroy_io;
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}
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nvme_start_ctrl(&ctrl->ctrl);
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return 0;
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destroy_io:
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if (ctrl->ctrl.queue_count > 1)
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nvme_rdma_destroy_io_queues(ctrl, new);
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destroy_admin:
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nvme_rdma_stop_queue(&ctrl->queues[0]);
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nvme_rdma_destroy_admin_queue(ctrl, new);
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return ret;
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}
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static void nvme_rdma_reconnect_ctrl_work(struct work_struct *work)
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{
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struct nvme_rdma_ctrl *ctrl = container_of(to_delayed_work(work),
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struct nvme_rdma_ctrl, reconnect_work);
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++ctrl->ctrl.nr_reconnects;
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if (nvme_rdma_setup_ctrl(ctrl, false))
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goto requeue;
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dev_info(ctrl->ctrl.device, "Successfully reconnected (%d attempts)\n",
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ctrl->ctrl.nr_reconnects);
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@ -955,9 +996,6 @@ static void nvme_rdma_reconnect_ctrl_work(struct work_struct *work)
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return;
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destroy_admin:
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nvme_rdma_stop_queue(&ctrl->queues[0]);
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nvme_rdma_destroy_admin_queue(ctrl, false);
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requeue:
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dev_info(ctrl->ctrl.device, "Failed reconnect attempt %d\n",
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ctrl->ctrl.nr_reconnects);
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@ -1786,8 +1824,6 @@ static void nvme_rdma_reset_ctrl_work(struct work_struct *work)
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{
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struct nvme_rdma_ctrl *ctrl =
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container_of(work, struct nvme_rdma_ctrl, ctrl.reset_work);
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int ret;
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bool changed;
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nvme_stop_ctrl(&ctrl->ctrl);
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nvme_rdma_shutdown_ctrl(ctrl, false);
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@ -1798,25 +1834,9 @@ static void nvme_rdma_reset_ctrl_work(struct work_struct *work)
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return;
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}
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ret = nvme_rdma_configure_admin_queue(ctrl, false);
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if (ret)
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if (nvme_rdma_setup_ctrl(ctrl, false))
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goto out_fail;
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if (ctrl->ctrl.queue_count > 1) {
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ret = nvme_rdma_configure_io_queues(ctrl, false);
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if (ret)
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goto out_fail;
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}
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changed = nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_LIVE);
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if (!changed) {
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/* state change failure is ok if we're in DELETING state */
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WARN_ON_ONCE(ctrl->ctrl.state != NVME_CTRL_DELETING);
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return;
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}
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nvme_start_ctrl(&ctrl->ctrl);
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return;
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out_fail:
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@ -1979,49 +1999,10 @@ static struct nvme_ctrl *nvme_rdma_create_ctrl(struct device *dev,
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changed = nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING);
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WARN_ON_ONCE(!changed);
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ret = nvme_rdma_configure_admin_queue(ctrl, true);
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ret = nvme_rdma_setup_ctrl(ctrl, true);
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if (ret)
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goto out_uninit_ctrl;
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/* sanity check icdoff */
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if (ctrl->ctrl.icdoff) {
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dev_err(ctrl->ctrl.device, "icdoff is not supported!\n");
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ret = -EINVAL;
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goto out_remove_admin_queue;
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}
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/* sanity check keyed sgls */
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if (!(ctrl->ctrl.sgls & (1 << 2))) {
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dev_err(ctrl->ctrl.device,
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"Mandatory keyed sgls are not supported!\n");
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ret = -EINVAL;
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goto out_remove_admin_queue;
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}
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/* only warn if argument is too large here, will clamp later */
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if (opts->queue_size > ctrl->ctrl.sqsize + 1) {
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dev_warn(ctrl->ctrl.device,
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"queue_size %zu > ctrl sqsize %u, clamping down\n",
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opts->queue_size, ctrl->ctrl.sqsize + 1);
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}
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/* warn if maxcmd is lower than sqsize+1 */
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if (ctrl->ctrl.sqsize + 1 > ctrl->ctrl.maxcmd) {
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dev_warn(ctrl->ctrl.device,
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"sqsize %u > ctrl maxcmd %u, clamping down\n",
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ctrl->ctrl.sqsize + 1, ctrl->ctrl.maxcmd);
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ctrl->ctrl.sqsize = ctrl->ctrl.maxcmd - 1;
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}
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if (opts->nr_io_queues) {
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ret = nvme_rdma_configure_io_queues(ctrl, true);
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if (ret)
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goto out_remove_admin_queue;
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}
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changed = nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_LIVE);
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WARN_ON_ONCE(!changed);
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dev_info(ctrl->ctrl.device, "new ctrl: NQN \"%s\", addr %pISpcs\n",
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ctrl->ctrl.opts->subsysnqn, &ctrl->addr);
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@ -2031,13 +2012,8 @@ static struct nvme_ctrl *nvme_rdma_create_ctrl(struct device *dev,
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list_add_tail(&ctrl->list, &nvme_rdma_ctrl_list);
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mutex_unlock(&nvme_rdma_ctrl_mutex);
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nvme_start_ctrl(&ctrl->ctrl);
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return &ctrl->ctrl;
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out_remove_admin_queue:
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nvme_rdma_stop_queue(&ctrl->queues[0]);
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nvme_rdma_destroy_admin_queue(ctrl, true);
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out_uninit_ctrl:
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nvme_uninit_ctrl(&ctrl->ctrl);
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nvme_put_ctrl(&ctrl->ctrl);
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