From: Bart Van Assche <bvanassche@acm.org>
Date: Mon, 25 May 2020 10:22:11 -0700
Subject: RDMA/srpt: Reduce max_recv_sge to 1
Patch-mainline: v5.8-rc1
Git-commit: 66ced2eb2ab95f6ebe8033e2e0a2e61f2615377c
References: jsc#SLE-15176
Since srpt_post_recv() always sets num_sge to 1, reduce the max_recv_sge
parameter that is used at queue pair allocation time to 1.
Link: https://lore.kernel.org/r/20200525172212.14413-4-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/ulp/srpt/ib_srpt.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -1818,16 +1818,12 @@ retry:
qp_init->cap.max_rdma_ctxs = sq_size / 2;
qp_init->cap.max_send_sge = min(attrs->max_send_sge,
SRPT_MAX_SG_PER_WQE);
- qp_init->cap.max_recv_sge = min(attrs->max_recv_sge,
- SRPT_MAX_SG_PER_WQE);
+ qp_init->cap.max_recv_sge = 1;
qp_init->port_num = ch->sport->port;
- if (sdev->use_srq) {
+ if (sdev->use_srq)
qp_init->srq = sdev->srq;
- } else {
+ else
qp_init->cap.max_recv_wr = ch->rq_size;
- qp_init->cap.max_recv_sge = min(attrs->max_recv_sge,
- SRPT_MAX_SG_PER_WQE);
- }
if (ch->using_rdma_cm) {
ret = rdma_create_qp(ch->rdma_cm.cm_id, sdev->pd, qp_init);