linux-kernel - [PATCH 5.17 0667/1126] RDMA/rxe: Change variable and function argument to proper type

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Date:   Tue,  5 Apr 2022 09:23:34 +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, Chengguang Xu <cgxu519@...ernel.net>,
        Leon Romanovsky <leonro@...dia.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 0667/1126] RDMA/rxe: Change variable and function argument to proper type

From: Chengguang Xu <cgxu519@...ernel.net>

[ Upstream commit 7e8e611d6a0ff228577b1167335ffefb0f44d5d8 ]

The type of wqe length is u32 so in order to avoid overflow and shadow
casting change variable and relevant function argument to proper type.

Link: https://lore.kernel.org/r/20220307145047.3235675-1-cgxu519@mykernel.net
Signed-off-by: Chengguang Xu <cgxu519@...ernel.net>
Reviewed-by: Leon Romanovsky <leonro@...dia.com>
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/infiniband/sw/rxe/rxe_req.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c
index 5eb89052dd66..b28036a7a3b8 100644
--- a/drivers/infiniband/sw/rxe/rxe_req.c
+++ b/drivers/infiniband/sw/rxe/rxe_req.c
@@ -359,7 +359,7 @@ static inline int get_mtu(struct rxe_qp *qp)
 
 static struct sk_buff *init_req_packet(struct rxe_qp *qp,
 				       struct rxe_send_wqe *wqe,
-				       int opcode, int payload,
+				       int opcode, u32 payload,
 				       struct rxe_pkt_info *pkt)
 {
 	struct rxe_dev		*rxe = to_rdev(qp->ibqp.device);
@@ -449,7 +449,7 @@ static struct sk_buff *init_req_packet(struct rxe_qp *qp,
 
 static int finish_packet(struct rxe_qp *qp, struct rxe_send_wqe *wqe,
 		       struct rxe_pkt_info *pkt, struct sk_buff *skb,
-		       int paylen)
+		       u32 paylen)
 {
 	int err;
 
@@ -497,7 +497,7 @@ static void update_wqe_state(struct rxe_qp *qp,
 static void update_wqe_psn(struct rxe_qp *qp,
 			   struct rxe_send_wqe *wqe,
 			   struct rxe_pkt_info *pkt,
-			   int payload)
+			   u32 payload)
 {
 	/* number of packets left to send including current one */
 	int num_pkt = (wqe->dma.resid + payload + qp->mtu - 1) / qp->mtu;
@@ -540,7 +540,7 @@ static void rollback_state(struct rxe_send_wqe *wqe,
 }
 
 static void update_state(struct rxe_qp *qp, struct rxe_send_wqe *wqe,
-			 struct rxe_pkt_info *pkt, int payload)
+			 struct rxe_pkt_info *pkt, u32 payload)
 {
 	qp->req.opcode = pkt->opcode;
 
@@ -612,7 +612,7 @@ int rxe_requester(void *arg)
 	struct sk_buff *skb;
 	struct rxe_send_wqe *wqe;
 	enum rxe_hdr_mask mask;
-	int payload;
+	u32 payload;
 	int mtu;
 	int opcode;
 	int ret;
-- 
2.34.1