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nvme/rdma: queue request if no rdma_req available

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This matches the behavior of nvme_pcie, which queues a request if no
tracker is available.

Change-Id: Idbf6c951c89451cfea22ec6bc553ff46f988f818
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Daniel Verkamp 2016-12-08 11:35:53 -07:00
parent ee82713678
commit 9938985766
1 changed files with 12 additions and 2 deletions
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14
lib/nvme/nvme_rdma.c
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@ -472,6 +472,7 @@ fail:
static int
nvme_rdma_recv(struct nvme_rdma_qpair *rqpair, struct ibv_wc *wc)
{
struct spdk_nvme_qpair *qpair = &rqpair->qpair;
struct spdk_nvme_rdma_req *rdma_req;
struct spdk_nvme_cpl *rsp;
struct nvme_request *req;
@ -496,6 +497,12 @@ nvme_rdma_recv(struct nvme_rdma_qpair *rqpair, struct ibv_wc *wc)
return -1;
}
if (!STAILQ_EMPTY(&qpair->queued_req) && !qpair->ctrlr->is_resetting) {
req = STAILQ_FIRST(&qpair->queued_req);
STAILQ_REMOVE_HEAD(&qpair->queued_req, stailq);
nvme_qpair_submit_request(qpair, req);
}
return 0;
}
@ -1327,8 +1334,11 @@ nvme_rdma_qpair_submit_request(struct spdk_nvme_qpair *qpair,
rdma_req = nvme_rdma_req_get(rqpair);
if (!rdma_req) {
SPDK_ERRLOG("nvme_rdma_req_get() failed\n");
return -1;
/*
* No rdma_req is available. Queue the request to be processed later.
*/
STAILQ_INSERT_TAIL(&qpair->queued_req, req, stailq);
return 0;
}
if (nvme_rdma_req_init(rqpair, req, rdma_req)) {