提交 8edd11c9 编写于 作者: G Guilherme G. Piccoli 提交者: Jens Axboe

nvme-fabrics: Allow 0 as KATO value

Currently, driver code allows user to set 0 as KATO
(Keep Alive TimeOut), but this is not being respected.
This patch enforces the expected behavior.
Signed-off-by: NGuilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Reviewed-by: NSagi Grimberg <sagi@grimberg.me>
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJens Axboe <axboe@kernel.dk>
上级 0951338d
......@@ -565,6 +565,7 @@ 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;
options = o = kstrdup(buf, GFP_KERNEL);
if (!options)
......@@ -655,21 +656,22 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
goto out;
}
if (opts->discovery_nqn) {
pr_err("Discovery controllers cannot accept keep_alive_tmo != 0\n");
ret = -EINVAL;
goto out;
}
if (token < 0) {
pr_err("Invalid keep_alive_tmo %d\n", token);
ret = -EINVAL;
goto out;
} else if (token == 0) {
} else if (token == 0 && !opts->discovery_nqn) {
/* Allowed for debug */
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)) {
......@@ -762,8 +764,6 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
uuid_copy(&opts->host->id, &hostid);
out:
if (!opts->discovery_nqn && !opts->kato)
opts->kato = NVME_DEFAULT_KATO;
kfree(options);
return ret;
}
......
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