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@xxxxxxxxx>
Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
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 c01687d..4babdf0 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:
@@ -98,6 +99,16 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
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 */
default:
@@ -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 8d8cbc4..abe83b4 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,
};
--
2.1.4
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