From 2d3b2e4427e2d74085bd2c17ffd737875871c983 Mon Sep 17 00:00:00 2001
From: Bob Pearson <rpearsonhpe@gmail.com>
Date: Thu, 17 Jun 2021 23:57:43 -0500
Subject: [PATCH 1/1] RDMA/rxe: Fix redundant skb_put_zero
Git-commit: 2d3b2e4427e2d74085bd2c17ffd737875871c983
Patch-mainline: v5.14
References: git-fixes
rxe_init_packet() in rxe_net.c calls skb_put_zero() to reserve space for
the payload and zero it out. All these bytes are then re-written with RoCE
headers and payload. Remove this useless extra copy.
Fixes: ecb238f6a7f3 ("IB/cxgb4: use skb_put_zero()/__skb_put_zero")
Link: https://lore.kernel.org/r/20210618045742.204195-7-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Nicolas Morey-Chaisemartin <nmoreychaisemartin@suse.com>
---
drivers/infiniband/sw/rxe/rxe_net.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
index c4350ce3b306..dec92928a1cd 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.c
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -468,7 +468,7 @@ struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
pkt->rxe = rxe;
pkt->port_num = port_num;
- pkt->hdr = skb_put_zero(skb, paylen);
+ pkt->hdr = skb_put(skb, paylen);
pkt->mask |= RXE_GRH_MASK;
out:
--
2.38.0.1.gee35aeee4b76