From def61eca9632af0559931f047c49d2762401857c Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 6 Jul 2016 21:55:49 +0900 Subject: [PATCH] nvme: add new reconnecting controller state 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 Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig Reviewed-by: Steve Wise Tested-by: Steve Wise Signed-off-by: Jens Axboe --- drivers/nvme/host/core.c | 12 ++++++++++++ drivers/nvme/host/nvme.h | 1 + 2 files changed, 13 insertions(+) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index c01687d61009..4babdf0d895c 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -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: diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 8d8cbc437699..abe83b43a71a 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -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, }; -- 2.20.1