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 <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>
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 @@
switch (old_state) {
case NVME_CTRL_NEW:
case NVME_CTRL_RESETTING:
+ case NVME_CTRL_RECONNECTING:
changed = true;
/* FALLTHRU */
default:
@@ -98,6 +99,16 @@
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 @@
switch (old_state) {
case NVME_CTRL_LIVE:
case NVME_CTRL_RESETTING:
+ case NVME_CTRL_RECONNECTING:
changed = true;
/* FALLTHRU */
default:
