From e67792cc96ef8e98364f509a25a6392a7c962f90 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Sun, 4 Feb 2024 18:16:37 -0500 Subject: svcrdma: Reserve an extra WQE for ib_drain_rq() Do as other ULPs already do: ensure there is an extra Receive WQE reserved for the tear-down drain WR. I haven't heard reports of problems but it can't hurt. Note that rq_depth is used to compute the Send Queue depth as well, so this fix should affect both the SQ and RQ. Signed-off-by: Chuck Lever --- net/sunrpc/xprtrdma/svc_rdma_transport.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/sunrpc') diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c index 4f27325ace4a..4a038c7e86f9 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c @@ -415,7 +415,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) if (newxprt->sc_max_send_sges > dev->attrs.max_send_sge) newxprt->sc_max_send_sges = dev->attrs.max_send_sge; rq_depth = newxprt->sc_max_requests + newxprt->sc_max_bc_requests + - newxprt->sc_recv_batch; + newxprt->sc_recv_batch + 1 /* drain */; if (rq_depth > dev->attrs.max_qp_wr) { rq_depth = dev->attrs.max_qp_wr; newxprt->sc_recv_batch = 1; -- cgit v1.2.3