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nvme: enable tcp async qpair connect

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This will be done in stages.  This patch adds the
nvme_tcp_ctrlr_connect_qpair_poll function and and makes the icreq step
asynchronous.  Later patches will expand it and make the
nvme_fabric_qpair_connect part asynchronous as well.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: Ief06f783049723131cc2469b15ad8300d51b6f32
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/8599
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
This commit is contained in:
Jim Harris 2021-05-28 16:42:48 +00:00 committed by Tomasz Zawadzki
parent 1763a126cc
commit 45d63e9882
2 changed files with 58 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

78
lib/nvme/nvme_tcp.c
View File

@ -1795,7 +1795,6 @@ nvme_tcp_qpair_icreq_send(struct nvme_tcp_qpair *tqpair)
{
struct spdk_nvme_tcp_ic_req *ic_req;
struct nvme_tcp_pdu *pdu;
int rc;
pdu = tqpair->send_pdu;
memset(tqpair->send_pdu, 0, sizeof(*tqpair->send_pdu));
@ -1813,24 +1812,24 @@ nvme_tcp_qpair_icreq_send(struct nvme_tcp_qpair *tqpair)
nvme_tcp_qpair_write_pdu(tqpair, pdu, nvme_tcp_send_icreq_complete, tqpair);
tqpair->icreq_timeout_tsc = spdk_get_ticks() + (NVME_TCP_TIME_OUT_IN_SECONDS * spdk_get_ticks_hz());
do {
if (tqpair->qpair.poll_group) {
rc = (int)nvme_tcp_poll_group_process_completions(tqpair->qpair.poll_group, 0,
dummy_disconnected_qpair_cb);
} else {
rc = nvme_tcp_qpair_process_completions(&tqpair->qpair, 0);
}
} while ((tqpair->state != NVME_TCP_QPAIR_STATE_RUNNING) &&
(rc >= 0) && (spdk_get_ticks() <= tqpair->icreq_timeout_tsc));
return 0;
}
if (tqpair->state != NVME_TCP_QPAIR_STATE_RUNNING) {
SPDK_ERRLOG("Failed to construct the tqpair=%p via correct icresp\n", tqpair);
return -1;
static int
nvme_tcp_qpair_icreq_poll(struct nvme_tcp_qpair *tqpair)
{
int rc;
if (spdk_get_ticks() > tqpair->icreq_timeout_tsc) {
rc = -ETIMEDOUT;
} else if (tqpair->qpair.poll_group) {
rc = nvme_tcp_poll_group_process_completions(tqpair->qpair.poll_group, 0,
dummy_disconnected_qpair_cb);
} else {
rc = nvme_tcp_qpair_process_completions(&tqpair->qpair, 0);
}
SPDK_DEBUGLOG(nvme, "Succesfully construct the tqpair=%p via correct icresp\n", tqpair);
return 0;
return rc == 0 ? -EAGAIN : rc;
}
static int
@ -1901,6 +1900,39 @@ nvme_tcp_qpair_connect_sock(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpai
return 0;
}
static int
nvme_tcp_ctrlr_connect_qpair_poll(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
{
struct nvme_tcp_qpair *tqpair;
int rc;
tqpair = nvme_tcp_qpair(qpair);
switch (tqpair->state) {
case NVME_TCP_QPAIR_STATE_INVALID:
case NVME_TCP_QPAIR_STATE_INITIALIZING:
rc = nvme_tcp_qpair_icreq_poll(tqpair);
if (rc != 0 && rc != -EAGAIN) {
SPDK_ERRLOG("Failed to construct the tqpair=%p via correct icresp\n", tqpair);
}
break;
case NVME_TCP_QPAIR_STATE_RUNNING:
rc = nvme_fabric_qpair_connect(&tqpair->qpair, tqpair->num_entries);
if (rc < 0) {
SPDK_ERRLOG("Failed to send an NVMe-oF Fabric CONNECT command\n");
break;
}
nvme_qpair_set_state(qpair, NVME_QPAIR_CONNECTED);
break;
default:
assert(false);
rc = -EINVAL;
break;
}
return rc;
}
static int
nvme_tcp_ctrlr_connect_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
{
@ -1936,15 +1968,15 @@ nvme_tcp_ctrlr_connect_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpa
return rc;
}
rc = nvme_fabric_qpair_connect(&tqpair->qpair, tqpair->num_entries);
if (rc < 0) {
SPDK_ERRLOG("Failed to send an NVMe-oF Fabric CONNECT command\n");
return rc;
do {
rc = nvme_tcp_ctrlr_connect_qpair_poll(ctrlr, qpair);
} while (rc == -EAGAIN);
if (rc != 0) {
nvme_transport_ctrlr_disconnect_qpair(ctrlr, qpair);
}
nvme_qpair_set_state(qpair, NVME_QPAIR_CONNECTED);
return 0;
return rc;
}
static struct spdk_nvme_qpair *

4
test/unit/lib/nvme/nvme_tcp.c/nvme_tcp_ut.c
View File

@ -1411,8 +1411,10 @@ test_nvme_tcp_ctrlr_connect_qpair(void)
tqpair.qpair.ctrlr->opts.data_digest = true;
TAILQ_INIT(&tqpair.send_queue);
rc = nvme_tcp_ctrlr_connect_qpair(&ctrlr, qpair);
while (rc == -EAGAIN) {
rc = nvme_tcp_ctrlr_connect_qpair_poll(&ctrlr, qpair);
}
CU_ASSERT(rc == 0);
CU_ASSERT(tqpair.maxr2t == NVME_TCP_MAX_R2T_DEFAULT);