static void
rpcrdma_recvcq_process_wc(struct ib_wc *wc)
{
struct rpcrdma_rep *rep =
(struct rpcrdma_rep *)(unsigned long)wc->wr_id;
/* WARNING: Only wr_id and status are reliable at this point */
if (wc->status != IB_WC_SUCCESS)
goto out_fail;
/* status == SUCCESS means all fields in wc are trustworthy */
if (wc->opcode != IB_WC_RECV)
return;
dprintk("RPC: %s: rep %p opcode 'recv', length %u: success\n",
__func__, rep, wc->byte_len);
rep->rr_len = wc->byte_len;
ib_dma_sync_single_for_cpu(rep->rr_device,
rdmab_addr(rep->rr_rdmabuf),
rep->rr_len, DMA_FROM_DEVICE);
prefetch(rdmab_to_msg(rep->rr_rdmabuf));
out_schedule:
queue_work(rpcrdma_receive_wq, &rep->rr_work);
return;
out_fail:
if (wc->status != IB_WC_WR_FLUSH_ERR)
pr_err("RPC: %s: rep %p: %s\n",
__func__, rep, ib_wc_status_msg(wc->status));
rep->rr_len = RPCRDMA_BAD_LEN;
goto out_schedule;
}
/**
* rpcrdma_wc_receive - Invoked by RDMA provider for each polled Receive WC
* @cq: completion queue (ignored)
* @wc: completed WR
*
*/
static void
rpcrdma_wc_receive(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_rep *rep = container_of(cqe, struct rpcrdma_rep,
rr_cqe);
/* WARNING: Only wr_id and status are reliable at this point */
if (wc->status != IB_WC_SUCCESS)
goto out_fail;
/* status == SUCCESS means all fields in wc are trustworthy */
if (wc->opcode != IB_WC_RECV)
return;
dprintk("RPC: %s: rep %p opcode 'recv', length %u: success\n",
__func__, rep, wc->byte_len);
rep->rr_len = wc->byte_len;
rep->rr_wc_flags = wc->wc_flags;
rep->rr_inv_rkey = wc->ex.invalidate_rkey;
ib_dma_sync_single_for_cpu(rep->rr_device,
rdmab_addr(rep->rr_rdmabuf),
rep->rr_len, DMA_FROM_DEVICE);
rpcrdma_update_granted_credits(rep);
out_schedule:
queue_work(rpcrdma_receive_wq, &rep->rr_work);
return;
out_fail:
if (wc->status != IB_WC_WR_FLUSH_ERR)
pr_err("rpcrdma: Recv: %s (%u/0x%x)\n",
ib_wc_status_msg(wc->status),
wc->status, wc->vendor_err);
rep->rr_len = RPCRDMA_BAD_LEN;
goto out_schedule;
}
