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nvmet-rdma: add an error flow for post_recv failures 

Posting receive buffer operation can fail, thus we should make
sure to have an error flow during initialization phase. While
we're here, add a debug print in case of a failure.

Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Max Gurtovoy 2018-07-01 12:20:24 +03:00 committed by Christoph Hellwig
parent 2fc464e216
commit 202093848c
1 changed files with 21 additions and 5 deletions
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26
drivers/nvme/target/rdma.c
View File

@ -436,14 +436,21 @@ static int nvmet_rdma_post_recv(struct nvmet_rdma_device *ndev,
struct nvmet_rdma_cmd *cmd)
{
struct ib_recv_wr *bad_wr;
int ret;
ib_dma_sync_single_for_device(ndev->device,
cmd->sge[0].addr, cmd->sge[0].length,
DMA_FROM_DEVICE);
if (ndev->srq)
return ib_post_srq_recv(ndev->srq, &cmd->wr, &bad_wr);
return ib_post_recv(cmd->queue->cm_id->qp, &cmd->wr, &bad_wr);
ret = ib_post_srq_recv(ndev->srq, &cmd->wr, &bad_wr);
else
ret = ib_post_recv(cmd->queue->cm_id->qp, &cmd->wr, &bad_wr);
if (unlikely(ret))
pr_err("post_recv cmd failed\n");
return ret;
}
static void nvmet_rdma_process_wr_wait_list(struct nvmet_rdma_queue *queue)
@ -833,11 +840,16 @@ static int nvmet_rdma_init_srq(struct nvmet_rdma_device *ndev)
ndev->srq = srq;
ndev->srq_size = srq_size;
for (i = 0; i < srq_size; i++)
nvmet_rdma_post_recv(ndev, &ndev->srq_cmds[i]);
for (i = 0; i < srq_size; i++) {
ret = nvmet_rdma_post_recv(ndev, &ndev->srq_cmds[i]);
if (ret)
goto out_free_cmds;
}
return 0;
out_free_cmds:
nvmet_rdma_free_cmds(ndev, ndev->srq_cmds, ndev->srq_size, false);
out_destroy_srq:
ib_destroy_srq(srq);
return ret;
@ -982,13 +994,17 @@ static int nvmet_rdma_create_queue_ib(struct nvmet_rdma_queue *queue)
if (!ndev->srq) {
for (i = 0; i < queue->recv_queue_size; i++) {
queue->cmds[i].queue = queue;
nvmet_rdma_post_recv(ndev, &queue->cmds[i]);
ret = nvmet_rdma_post_recv(ndev, &queue->cmds[i]);
if (ret)
goto err_destroy_qp;
}
}
out:
return ret;
err_destroy_qp:
rdma_destroy_qp(queue->cm_id);
err_destroy_cq:
ib_free_cq(queue->cq);
goto out;