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nvme: fix keep alive issues in host side

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There are two bugs:
1, When the target response 0, it means target does't
support keep alive.
2, Change the interval time to us so when the keep alive
timeout is 1ms then the interval is 500us.

Fix github issue: #1565

Change-Id: I75707ab0e4e639209a9c50ef326492fae213044d
Signed-off-by: Jin Yu <jin.yu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4077
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
Jin Yu 2020-09-07 17:52:38 +08:00 committed by Tomasz Zawadzki
parent 744448260b
commit ba773a54c7
1 changed files with 13 additions and 9 deletions
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22
lib/nvme/nvme_ctrlr.c
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@ -1846,7 +1846,7 @@ nvme_ctrlr_set_num_queues(struct spdk_nvme_ctrlr *ctrlr)
static void
nvme_ctrlr_set_keep_alive_timeout_done(void *arg, const struct spdk_nvme_cpl *cpl)
{
uint32_t keep_alive_interval_ms;
uint32_t keep_alive_interval_us;
struct spdk_nvme_ctrlr *ctrlr = (struct spdk_nvme_ctrlr *)arg;
if (spdk_nvme_cpl_is_error(cpl)) {
@ -1869,16 +1869,20 @@ nvme_ctrlr_set_keep_alive_timeout_done(void *arg, const struct spdk_nvme_cpl *cp
ctrlr->opts.keep_alive_timeout_ms = cpl->cdw0;
}
keep_alive_interval_ms = ctrlr->opts.keep_alive_timeout_ms / 2;
if (keep_alive_interval_ms == 0) {
keep_alive_interval_ms = 1;
if (ctrlr->opts.keep_alive_timeout_ms == 0) {
ctrlr->keep_alive_interval_ticks = 0;
} else {
keep_alive_interval_us = ctrlr->opts.keep_alive_timeout_ms * 1000 / 2;
SPDK_DEBUGLOG(SPDK_LOG_NVME, "Sending keep alive every %u us\n", keep_alive_interval_us);
ctrlr->keep_alive_interval_ticks = (keep_alive_interval_us * spdk_get_ticks_hz()) /
UINT64_C(1000000);
/* Schedule the first Keep Alive to be sent as soon as possible. */
ctrlr->next_keep_alive_tick = spdk_get_ticks();
}
SPDK_DEBUGLOG(SPDK_LOG_NVME, "Sending keep alive every %u ms\n", keep_alive_interval_ms);
ctrlr->keep_alive_interval_ticks = (keep_alive_interval_ms * spdk_get_ticks_hz()) / UINT64_C(1000);
/* Schedule the first Keep Alive to be sent as soon as possible. */
ctrlr->next_keep_alive_tick = spdk_get_ticks();
nvme_ctrlr_set_state(ctrlr, NVME_CTRLR_STATE_SET_HOST_ID,
ctrlr->opts.admin_timeout_ms);
}