diff options
| -rw-r--r-- | net/9p/trans_rdma.c | 44 |
1 files changed, 28 insertions, 16 deletions
diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c index 1bd4c71..926e72d 100644 --- a/net/9p/trans_rdma.c +++ b/net/9p/trans_rdma.c @@ -430,7 +430,7 @@ static int rdma_request(struct p9_client *client, struct p9_req_t *req) rpl_context = kmalloc(sizeof *rpl_context, GFP_NOFS); if (!rpl_context) { err = -ENOMEM; - goto err_close; + goto recv_error; } rpl_context->rc = req->rc; @@ -441,13 +441,15 @@ static int rdma_request(struct p9_client *client, struct p9_req_t *req) * outstanding request, so we must keep a count to avoid * overflowing the RQ. */ - if (down_interruptible(&rdma->rq_sem)) - goto error; /* FIXME : -EINTR instead */ + if (down_interruptible(&rdma->rq_sem)) { + err = -EINTR; + goto recv_error; + } err = post_recv(client, rpl_context); if (err) { p9_debug(P9_DEBUG_FCALL, "POST RECV failed\n"); - goto err_free; + goto recv_error; } /* remove posted receive buffer from request structure */ @@ -457,15 +459,17 @@ static int rdma_request(struct p9_client *client, struct p9_req_t *req) c = kmalloc(sizeof *c, GFP_NOFS); if (!c) { err = -ENOMEM; - goto err_free; + goto send_error; } c->req = req; c->busa = ib_dma_map_single(rdma->cm_id->device, c->req->tc->sdata, c->req->tc->size, DMA_TO_DEVICE); - if (ib_dma_mapping_error(rdma->cm_id->device, c->busa)) - goto error; + if (ib_dma_mapping_error(rdma->cm_id->device, c->busa)) { + err = -EIO; + goto send_error; + } sge.addr = c->busa; sge.length = c->req->tc->size; @@ -479,19 +483,27 @@ static int rdma_request(struct p9_client *client, struct p9_req_t *req) wr.sg_list = &sge; wr.num_sge = 1; - if (down_interruptible(&rdma->sq_sem)) - goto error; + if (down_interruptible(&rdma->sq_sem)) { + err = -EINTR; + goto send_error; + } - return ib_post_send(rdma->qp, &wr, &bad_wr); + err = ib_post_send(rdma->qp, &wr, &bad_wr); + if (err) + goto send_error; - error: + /* Success */ + return 0; + + /* Handle errors that happened during or while preparing the send: */ + send_error: kfree(c); + p9_debug(P9_DEBUG_ERROR, "Error %d in rdma_request()\n", err); + return err; + + /* Handle errors that happened during or while preparing post_recv(): */ + recv_error: kfree(rpl_context); - p9_debug(P9_DEBUG_ERROR, "EIO\n"); - return -EIO; - err_free: - kfree(rpl_context); - err_close: spin_lock_irqsave(&rdma->req_lock, flags); if (rdma->state < P9_RDMA_CLOSING) { rdma->state = P9_RDMA_CLOSING; |
