linux-kernel - [PATCH 5.10 018/717] RDMA/bnxt_re: Fix entry size during SRQ create

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Date:   Mon, 28 Dec 2020 13:40:16 +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, Devesh Sharma <devesh.sharma@...adcom.com>,
        Selvin Xavier <selvin.xavier@...adcom.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 018/717] RDMA/bnxt_re: Fix entry size during SRQ create

From: Selvin Xavier <selvin.xavier@...adcom.com>

[ Upstream commit b898d5c50cab1f985e77d053eb5c4d2c4a7694ae ]

Only static WQE is supported for SRQ. So always use the max supported SGEs
while calculating SRQ entry size.

Fixes: 2bb3c32c5c5f ("RDMA/bnxt_re: Change wr posting logic to accommodate variable wqes")
Link: https://lore.kernel.org/r/1602569752-12745-1-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Devesh Sharma <devesh.sharma@...adcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@...adcom.com>
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/infiniband/hw/bnxt_re/ib_verbs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index f9c999d5ba28e..266de55f57192 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -1657,8 +1657,8 @@ int bnxt_re_create_srq(struct ib_srq *ib_srq,
 	srq->qplib_srq.max_wqe = entries;
 
 	srq->qplib_srq.max_sge = srq_init_attr->attr.max_sge;
-	srq->qplib_srq.wqe_size =
-			bnxt_re_get_rwqe_size(srq->qplib_srq.max_sge);
+	 /* 128 byte wqe size for SRQ . So use max sges */
+	srq->qplib_srq.wqe_size = bnxt_re_get_rwqe_size(dev_attr->max_srq_sges);
 	srq->qplib_srq.threshold = srq_init_attr->attr.srq_limit;
 	srq->srq_limit = srq_init_attr->attr.srq_limit;
 	srq->qplib_srq.eventq_hw_ring_id = rdev->nq[0].ring_id;
-- 
2.27.0