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nvme-fabrics: Remove tl_retry_count 

The timeout before error recovery logic kicks in is
dictated by the nvme keep-alive, so we don't really need
a transport layer retry count. transports can retry for
as much as they like.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Sagi Grimberg 2016-06-22 15:06:01 +03:00 committed by Jens Axboe
parent 2ac17c283a
commit 6a92967ccb
2 changed files with 0 additions and 17 deletions
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14
drivers/nvme/host/fabrics.c
View File

@ -503,7 +503,6 @@ static const match_table_t opt_tokens = {
{ NVMF_OPT_NQN, "nqn=%s" }, { NVMF_OPT_NQN, "nqn=%s" },
{ NVMF_OPT_QUEUE_SIZE, "queue_size=%d" }, { NVMF_OPT_QUEUE_SIZE, "queue_size=%d" },
{ NVMF_OPT_NR_IO_QUEUES, "nr_io_queues=%d" }, { NVMF_OPT_NR_IO_QUEUES, "nr_io_queues=%d" },
{ NVMF_OPT_TL_RETRY_COUNT, "tl_retry_count=%d" },
{ NVMF_OPT_RECONNECT_DELAY, "reconnect_delay=%d" }, { NVMF_OPT_RECONNECT_DELAY, "reconnect_delay=%d" },
{ NVMF_OPT_KATO, "keep_alive_tmo=%d" }, { NVMF_OPT_KATO, "keep_alive_tmo=%d" },
{ NVMF_OPT_HOSTNQN, "hostnqn=%s" }, { NVMF_OPT_HOSTNQN, "hostnqn=%s" },
@ -521,7 +520,6 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
/* Set defaults */ /* Set defaults */
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->tl_retry_count = 2;
opts->reconnect_delay = NVMF_DEF_RECONNECT_DELAY; opts->reconnect_delay = NVMF_DEF_RECONNECT_DELAY;
options = o = kstrdup(buf, GFP_KERNEL); options = o = kstrdup(buf, GFP_KERNEL);
@ -605,18 +603,6 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
opts->nr_io_queues = min_t(unsigned int, opts->nr_io_queues = min_t(unsigned int,
num_online_cpus(), token); num_online_cpus(), token);
break; break;
case NVMF_OPT_TL_RETRY_COUNT:
if (match_int(args, &token)) {
ret = -EINVAL;
goto out;
}
if (token < 0) {
pr_err("Invalid tl_retry_count %d\n", token);
ret = -EINVAL;
goto out;
}
opts->tl_retry_count = token;
break;
case NVMF_OPT_KATO: case NVMF_OPT_KATO:
if (match_int(args, &token)) { if (match_int(args, &token)) {
ret = -EINVAL; ret = -EINVAL;

3
drivers/nvme/host/fabrics.h
View File

@ -69,8 +69,6 @@ enum {
* @trsvcid: network port used for host-controller communication. * @trsvcid: network port used for host-controller communication.
* @queue_size: Number of IO queue elements. * @queue_size: Number of IO queue elements.
* @nr_io_queues: Number of controller IO queues that will be established. * @nr_io_queues: Number of controller IO queues that will be established.
* @tl_retry_count: Number of transport layer retries for a fabric queue before
* kicking upper layer(s) error recovery.
* @reconnect_delay: Time between two consecutive reconnect attempts. * @reconnect_delay: Time between two consecutive reconnect attempts.
* @discovery_nqn: indicates if the subsysnqn is the well-known discovery NQN. * @discovery_nqn: indicates if the subsysnqn is the well-known discovery NQN.
* @kato: Keep-alive timeout. * @kato: Keep-alive timeout.
@ -84,7 +82,6 @@ struct nvmf_ctrl_options {
char *trsvcid; char *trsvcid;
size_t queue_size; size_t queue_size;
unsigned int nr_io_queues; unsigned int nr_io_queues;
unsigned short tl_retry_count;
unsigned int reconnect_delay; unsigned int reconnect_delay;
bool discovery_nqn; bool discovery_nqn;
unsigned int kato; unsigned int kato;