netdev - [PATCH v1 net-next 3/5] ipv6: exthdrs: Replace pskb_pull() with skb_pull() in ipv6_srh

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Message-ID: <20230614230107.22301-4-kuniyu@amazon.com>
Date: Wed, 14 Jun 2023 16:01:05 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, David Ahern <dsahern@...nel.org>
CC: Kuniyuki Iwashima <kuniyu@...zon.com>, Kuniyuki Iwashima
	<kuni1840@...il.com>, <netdev@...r.kernel.org>
Subject: [PATCH v1 net-next 3/5] ipv6: exthdrs: Replace pskb_pull() with skb_pull() in ipv6_srh_rcv().

ipv6_rthdr_rcv() pulls these data

  - Segment Routing Header : 8
  - Hdr Ext Len            : skb_transport_header(skb)[1] << 3

needed by ipv6_srh_rcv(), so pskb_pull() in ipv6_srh_rcv() never
fails and can be replaced with skb_pull().

Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.com>
---
 net/ipv6/exthdrs.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 6259e907f0d9..e62e26ac99ef 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -402,11 +402,7 @@ static int ipv6_srh_rcv(struct sk_buff *skb)
 
 			skb_postpull_rcsum(skb, skb_network_header(skb),
 					   skb_network_header_len(skb));
-
-			if (!pskb_pull(skb, offset)) {
-				kfree_skb(skb);
-				return -1;
-			}
+			skb_pull(skb, offset);
 			skb_postpull_rcsum(skb, skb_transport_header(skb),
 					   offset);
 
-- 
2.30.2