nvme: add new reconnecting controller state (def61eca) · Commits · 戴 / test

The nvme fabric (RDMA, FC, etc...) can introduce port, link or node failures that may require a reconnect to re-establish the connection. Add a new reconnecting state that will initially be used by the RDMA driver. Reviewed-by:

Jay Freyensee <james.p.freyensee@intel.com> Reviewed-by:

Sagi Grimberg <sagi@grimberg.me> Signed-off-by:

Christoph Hellwig <hch@lst.de> Reviewed-by:

Steve Wise <swise@opengridcomputing.com> Tested-by:

Steve Wise <swise@opengridcomputing.com> Signed-off-by:

Jens Axboe <axboe@fb.com>

drivers/nvme/host/core.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -88,6 +88,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
		switch (old_state) {
		case NVME_CTRL_NEW:
		case NVME_CTRL_RESETTING:
		case NVME_CTRL_RECONNECTING:
		changed = true;
		/* FALLTHRU */
		default:
		@@ -97,6 +98,16 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
		case NVME_CTRL_RESETTING:
		switch (old_state) {
		case NVME_CTRL_NEW:
		case NVME_CTRL_LIVE:
		case NVME_CTRL_RECONNECTING:
		changed = true;
		/* FALLTHRU */
		default:
		break;
		}
		break;
		case NVME_CTRL_RECONNECTING:
		switch (old_state) {
		case NVME_CTRL_LIVE:
		changed = true;
		/* FALLTHRU */
		@@ -108,6 +119,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
		switch (old_state) {
		case NVME_CTRL_LIVE:
		case NVME_CTRL_RESETTING:
		case NVME_CTRL_RECONNECTING:
		changed = true;
		/* FALLTHRU */
		default:

drivers/nvme/host/nvme.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -74,6 +74,7 @@ enum nvme_ctrl_state {
		NVME_CTRL_NEW,
		NVME_CTRL_LIVE,
		NVME_CTRL_RESETTING,
		NVME_CTRL_RECONNECTING,
		NVME_CTRL_DELETING,
		NVME_CTRL_DEAD,
		};

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