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nvmf/vfio-user: free controller if no connected qpair

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The VM may already delete all queue pairs and just leave the
socket when killing VM, so we can check number of connected
queue pairs here, if no connected queue pairs, free the
controller immediately.

It's an optimization so that we don't need to loop all
queue pairs below.

Change-Id: Ia1be868ce2c74ce6953b1f44a81b51d605e642f0
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7625
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: <dongx.yi@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
This commit is contained in:
Changpeng Liu 2021-04-27 21:22:16 +08:00 committed by Tomasz Zawadzki
parent 7cb301c042
commit 684410026b
1 changed files with 8 additions and 0 deletions
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8
lib/nvmf/vfio_user.c
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@ -2203,6 +2203,14 @@ vfio_user_destroy_ctrlr(struct nvmf_vfio_user_ctrlr *ctrlr)
endpoint = ctrlr->endpoint;
assert(endpoint != NULL);
pthread_mutex_lock(&endpoint->lock);
if (ctrlr->num_connected_qps == 0) {
free_ctrlr(ctrlr);
pthread_mutex_unlock(&endpoint->lock);
return 0;
}
pthread_mutex_unlock(&endpoint->lock);
for (i = 0; i < NVMF_VFIO_USER_DEFAULT_MAX_QPAIRS_PER_CTRLR; i++) {
qpair = ctrlr->qp[i];
if (qpair == NULL) {