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| author | Sagi Grimberg <sagi@grimberg.me> | 2019-07-12 11:02:09 -0700 |
|---|---|---|
| committer | Sagi Grimberg <sagi@grimberg.me> | 2019-09-12 08:50:46 -0700 |
| commit | 2d352df57bcd7fee800fa1aa7257e68bfca64d2b (patch) | |
| tree | 858183d63ffa2d8c9f028fd513ecacbf6cd94215 /drivers/nvme | |
| parent | 1179d337be70e67baa2d8121677c310fea4f72c3 (diff) | |
| download | linux-2d352df57bcd7fee800fa1aa7257e68bfca64d2b.tar.gz linux-2d352df57bcd7fee800fa1aa7257e68bfca64d2b.tar.bz2 linux-2d352df57bcd7fee800fa1aa7257e68bfca64d2b.zip | |
nvme-fabrics: allow discovery subsystems accept a kato
This modifies the behavior of discovery subsystems to accept
a kato as a preparation to support discovery log change
events. This also means that now every discovery controller
will have a default kato value, and for non-persistent connections
the host needs to pass in a zero kato value (keep_alive_tmo=0).
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/fabrics.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c index 145c210edb03..74b8818ac9a1 100644 --- a/drivers/nvme/host/fabrics.c +++ b/drivers/nvme/host/fabrics.c @@ -381,8 +381,8 @@ int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl) * Set keep-alive timeout in seconds granularity (ms * 1000) * and add a grace period for controller kato enforcement */ - cmd.connect.kato = ctrl->opts->discovery_nqn ? 0 : - cpu_to_le32((ctrl->kato + NVME_KATO_GRACE) * 1000); + cmd.connect.kato = ctrl->kato ? + cpu_to_le32((ctrl->kato + NVME_KATO_GRACE) * 1000) : 0; if (ctrl->opts->disable_sqflow) cmd.connect.cattr |= NVME_CONNECT_DISABLE_SQFLOW; @@ -740,13 +740,6 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts, pr_warn("keep_alive_tmo 0 won't execute keep alives!!!\n"); } opts->kato = token; - - if (opts->discovery_nqn && opts->kato) { - pr_err("Discovery controllers cannot accept KATO != 0\n"); - ret = -EINVAL; - goto out; - } - break; case NVMF_OPT_CTRL_LOSS_TMO: if (match_int(args, &token)) { @@ -883,7 +876,6 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts, } if (opts->discovery_nqn) { - opts->kato = 0; opts->nr_io_queues = 0; opts->nr_write_queues = 0; opts->nr_poll_queues = 0; |