linux-kernel - [PATCH 5.11 433/775] RDMA/hns: Force srq

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Date:   Mon,  1 Mar 2021 17:10:01 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Wenpeng Liang <liangwenpeng@...wei.com>,
        Weihang Li <liweihang@...wei.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.11 433/775] RDMA/hns: Force srq_limit to 0 when creating SRQ

From: Wenpeng Liang <liangwenpeng@...wei.com>

[ Upstream commit b5df9b7a2f965b7903850d8f89846ffe0080b84b ]

According to the IB Specification, srq_limit shouldn't be configured
during SRQ creation. If a user set srq_limit at this time, the driver
should forced it to zero, or the result of creating SRQ will conflict with
the result of querying SRQ.

Fixes: c7bcb13442e1 ("RDMA/hns: Add SRQ support for hip08 kernel mode")
Link: https://lore.kernel.org/r/1611997090-48820-4-git-send-email-liweihang@huawei.com
Signed-off-by: Wenpeng Liang <liangwenpeng@...wei.com>
Signed-off-by: Weihang Li <liweihang@...wei.com>
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/infiniband/hw/hns/hns_roce_srq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/hw/hns/hns_roce_srq.c b/drivers/infiniband/hw/hns/hns_roce_srq.c
index 9f60a0a745e11..ecc42c59e3cfc 100644
--- a/drivers/infiniband/hw/hns/hns_roce_srq.c
+++ b/drivers/infiniband/hw/hns/hns_roce_srq.c
@@ -338,6 +338,7 @@ int hns_roce_create_srq(struct ib_srq *ib_srq,
 		roundup_pow_of_two(init_attr->attr.max_sge + srq->rsv_sge);
 	init_attr->attr.max_wr = srq->wqe_cnt;
 	init_attr->attr.max_sge = srq->max_gs;
+	init_attr->attr.srq_limit = 0;
 
 	if (udata) {
 		ret = ib_copy_from_udata(&ucmd, udata,
-- 
2.27.0