linux-kernel - [PATCH 5.15 096/121] RDMA/irdma: Return correct WC error for bind operation failure

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Date:   Tue, 13 Sep 2022 16:04:47 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Sindhu-Devale <sindhu.devale@...el.com>,
        Shiraz Saleem <shiraz.saleem@...el.com>,
        Leon Romanovsky <leon@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 096/121] RDMA/irdma: Return correct WC error for bind operation failure

From: Sindhu-Devale <sindhu.devale@...el.com>

[ Upstream commit dcb23bbb1de7e009875fdfac2b8a9808a9319cc6 ]

When a QP and a MR on a local host are in different PDs, the HW generates
an asynchronous event (AE). The same AE is generated when a QP and a MW
are in different PDs during a bind operation. Return the more appropriate
IBV_WC_MW_BIND_ERR for the latter case by checking the OP type from the
CQE in error.

Fixes: 551c46edc769 ("RDMA/irdma: Add user/kernel shared libraries")
Signed-off-by: Sindhu-Devale <sindhu.devale@...el.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@...el.com>
Link: https://lore.kernel.org/r/20220906223244.1119-4-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/infiniband/hw/irdma/uk.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/irdma/uk.c b/drivers/infiniband/hw/irdma/uk.c
index 9b544a3b12886..7e6c3ba8df6ab 100644
--- a/drivers/infiniband/hw/irdma/uk.c
+++ b/drivers/infiniband/hw/irdma/uk.c
@@ -1068,6 +1068,7 @@ irdma_uk_cq_poll_cmpl(struct irdma_cq_uk *cq, struct irdma_cq_poll_info *info)
 	enum irdma_status_code ret_code;
 	bool move_cq_head = true;
 	u8 polarity;
+	u8 op_type;
 	bool ext_valid;
 	__le64 *ext_cqe;
 
@@ -1250,7 +1251,6 @@ irdma_uk_cq_poll_cmpl(struct irdma_cq_uk *cq, struct irdma_cq_poll_info *info)
 			do {
 				__le64 *sw_wqe;
 				u64 wqe_qword;
-				u8 op_type;
 				u32 tail;
 
 				tail = qp->sq_ring.tail;
@@ -1267,6 +1267,8 @@ irdma_uk_cq_poll_cmpl(struct irdma_cq_uk *cq, struct irdma_cq_poll_info *info)
 					break;
 				}
 			} while (1);
+			if (op_type == IRDMA_OP_TYPE_BIND_MW && info->minor_err == FLUSH_PROT_ERR)
+				info->minor_err = FLUSH_MW_BIND_ERR;
 			qp->sq_flush_seen = true;
 			if (!IRDMA_RING_MORE_WORK(qp->sq_ring))
 				qp->sq_flush_complete = true;
-- 
2.35.1