From: zhenwei pi <pizhenwei@bytedance.com>
Date: Thu, 22 Aug 2024 06:52:21 +0000 (+0800)
Subject: RDMA/rxe: Use sizeof instead of hard code number
X-Git-Tag: v6.12-rc1~72^2~74
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c87c5f47ff72a14001c982d3bc58d7b98ca746c3;p=thirdparty%2Fkernel%2Fstable.git

RDMA/rxe: Use sizeof instead of hard code number

Use 'sizeof(union rdma_network_hdr)' instead of hard code GRH length
for GSI and UD.

Link: https://patch.msgid.link/r/20240822065223.1117056-2-pizhenwei@bytedance.com
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
---

diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c
index 6596a85723c9a..bf8f4bc8c5c8f 100644
--- a/drivers/infiniband/sw/rxe/rxe_resp.c
+++ b/drivers/infiniband/sw/rxe/rxe_resp.c
@@ -351,7 +351,7 @@ static enum resp_states rxe_resp_check_length(struct rxe_qp *qp,
 
 		for (i = 0; i < qp->resp.wqe->dma.num_sge; i++)
 			recv_buffer_len += qp->resp.wqe->dma.sge[i].length;
-		if (payload + 40 > recv_buffer_len) {
+		if (payload + sizeof(union rdma_network_hdr) > recv_buffer_len) {
 			rxe_dbg_qp(qp, "The receive buffer is too small for this UD packet.\n");
 			return RESPST_ERR_LENGTH;
 		}