From: Martin George <marting@xxxxxxxxxx>
[ Upstream commit 32feb6de47242e54692eceab52cfae8616aa0518 ]
Currently kato is initialized to NVME_DEFAULT_KATO for both
discovery & i/o controllers. This is a problem specifically
for non-persistent discovery controllers since it always ends
up with a non-zero kato value. Fix this by initializing kato
to zero instead, and ensuring various controllers are assigned
appropriate kato values as follows:
non-persistent controllers - kato set to zero
persistent controllers - kato set to NVMF_DEV_DISC_TMO
(or any positive int via nvme-cli)
i/o controllers - kato set to NVME_DEFAULT_KATO
(or any positive int via nvme-cli)
Signed-off-by: Martin George <marting@xxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/nvme/host/fabrics.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 72ac00173500..684acd6813bc 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -634,7 +634,7 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
opts->queue_size = NVMF_DEF_QUEUE_SIZE;
opts->nr_io_queues = num_online_cpus();
opts->reconnect_delay = NVMF_DEF_RECONNECT_DELAY;
- opts->kato = NVME_DEFAULT_KATO;
+ opts->kato = 0;
opts->duplicate_connect = false;
opts->fast_io_fail_tmo = NVMF_DEF_FAIL_FAST_TMO;
opts->hdr_digest = false;
@@ -897,6 +897,9 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
opts->nr_write_queues = 0;
opts->nr_poll_queues = 0;
opts->duplicate_connect = true;
+ } else {
+ if (!opts->kato)
+ opts->kato = NVME_DEFAULT_KATO;
}
if (ctrl_loss_tmo < 0) {
opts->max_reconnects = -1;
--
2.30.1
