From: Martin George <martinus.gpy@gmail.com>
To: linux-nvme@lists.infradead.org
Cc: Martin George <marting@netapp.com>
Subject: [PATCH] nvme-fabrics: fix kato initialization
Date: Thu, 18 Feb 2021 15:34:43 +0530 [thread overview]
Message-ID: <20210218100443.5854-1-marting@netapp.com> (raw)
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@netapp.com>
---
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 5dfd806fc2d2..604ab0e5a2ad 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -630,7 +630,7 @@ 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;
@@ -893,6 +893,9 @@ 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;
--
2.30.0
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next reply other threads:[~2021-02-18 10:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-18 10:04 Martin George [this message]
2021-02-19 16:42 ` [PATCH] nvme-fabrics: fix kato initialization Hannes Reinecke
2021-02-20 8:41 ` George, Martin
2021-02-20 14:59 ` Hannes Reinecke
[not found] <20210211175826.4821-1-marting@netapp.com>
2021-02-24 9:14 ` Christoph Hellwig
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