Commit 6968aeb5 authored May 08, 2020 by Weihang Li Committed by Jason Gunthorpe May 19, 2020

RDMA/hns: Fix wrong assignment of SRQ's max_wr

srq's attribute max_wr should be 1 less than the total count of wqe.

Fixes: ffb1308b ("RDMA/hns: Move SRQ code to the reasonable place")
Link: https://lore.kernel.org/r/1588931159-56875-5-git-send-email-liweihang@huawei.com

Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

parent 053c0acf

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -5044,7 +5044,7 @@ static int hns_roce_v2_query_srq(struct ib_srq ibsrq, struct ib_srq_attr attr)
		SRQC_BYTE_8_SRQ_LIMIT_WL_S);

		attr->srq_limit = limit_wl;
		attr->max_wr = srq->wqe_cnt;
		attr->max_wr = srq->wqe_cnt - 1;
		attr->max_sge = srq->max_gs;

		memcpy(srq_context, mailbox->buf, sizeof(*srq_context));