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nvme-fabrics: fix kato initialization

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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>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Martin George 2021-02-11 23:28:26 +05:30 • committed by Christoph Hellwig
parent 78570f8873
commit 32feb6de47
1 changed files with 4 additions and 1 deletions
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5
drivers/nvme/host/fabrics.c
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@ -630,7 +630,7 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
opts->queue_size = NVMF_DEF_QUEUE_SIZE; opts->queue_size = NVMF_DEF_QUEUE_SIZE;
opts->nr_io_queues = num_online_cpus(); opts->nr_io_queues = num_online_cpus();
opts->reconnect_delay = NVMF_DEF_RECONNECT_DELAY; opts->reconnect_delay = NVMF_DEF_RECONNECT_DELAY;
opts->kato = NVME_DEFAULT_KATO; opts->kato = 0;
opts->duplicate_connect = false; opts->duplicate_connect = false;
opts->fast_io_fail_tmo = NVMF_DEF_FAIL_FAST_TMO; opts->fast_io_fail_tmo = NVMF_DEF_FAIL_FAST_TMO;
opts->hdr_digest = false; 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_write_queues = 0;
opts->nr_poll_queues = 0; opts->nr_poll_queues = 0;
opts->duplicate_connect = true; opts->duplicate_connect = true;
} else {
if (!opts->kato)
opts->kato = NVME_DEFAULT_KATO;
} }
if (ctrl_loss_tmo < 0) { if (ctrl_loss_tmo < 0) {
opts->max_reconnects = -1; opts->max_reconnects = -1;