Commit 221109e6 authored Sep 19, 2020 by Yangyang Li Committed by Jason Gunthorpe Sep 24, 2020

RDMA/hns: Add interception for resizing SRQs

HIP08 doesn't support modifying the maximum number of outstanding WR in an
SRQ. However, the driver does not return a failure message, and users may
mistakenly think that the resizing is executed successfully. So the driver
needs to intercept this operation.

Fixes: ffb1308b ("RDMA/hns: Move SRQ code to the reasonable place")
Link: https://lore.kernel.org/r/1600509802-44382-3-git-send-email-liweihang@huawei.com

Signed-off-by: Yangyang Li <liyangyang20@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

parent 12542f1d

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -5118,6 +5118,10 @@ static int hns_roce_v2_modify_srq(struct ib_srq *ibsrq,
		struct hns_roce_cmd_mailbox *mailbox;
		int ret;

		/* Resizing SRQs is not supported yet */
		if (srq_attr_mask & IB_SRQ_MAX_WR)
		return -EINVAL;

		if (srq_attr_mask & IB_SRQ_LIMIT) {
		if (srq_attr->srq_limit >= srq->wqe_cnt)
		return -EINVAL;