linux-kernel - [PATCH 3/3] RDMA/rxe: Fix __bth_set

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Message-Id: <20240822065223.1117056-4-pizhenwei@bytedance.com>
Date: Thu, 22 Aug 2024 14:52:23 +0800
From: zhenwei pi <pizhenwei@...edance.com>
To: linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: zyjzyj2000@...il.com,
	jgg@...dia.com,
	leonro@...dia.com,
	zhenwei pi <pizhenwei@...edance.com>
Subject: [PATCH 3/3] RDMA/rxe: Fix __bth_set_resv6a

__bth_set_resv6a is used to clear BIT [24, 29] of rxe_bth::qpn, the
wrong expression leads other BITs into 1.

Signed-off-by: zhenwei pi <pizhenwei@...edance.com>
---
 drivers/infiniband/sw/rxe/rxe_hdr.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_hdr.h b/drivers/infiniband/sw/rxe/rxe_hdr.h
index 46f82b27fcd2..1f0322491d8c 100644
--- a/drivers/infiniband/sw/rxe/rxe_hdr.h
+++ b/drivers/infiniband/sw/rxe/rxe_hdr.h
@@ -234,7 +234,7 @@ static inline void __bth_set_resv6a(void *arg)
 {
 	struct rxe_bth *bth = arg;
 
-	bth->qpn = cpu_to_be32(~BTH_RESV6A_MASK);
+	bth->qpn &= cpu_to_be32(~BTH_RESV6A_MASK);
 }
 
 static inline int __bth_ack(void *arg)
-- 
2.34.1