ipv6: fix typos in __ip6_finish_output()

stable inclusion
from stable-v5.10.83
commit 9b44cb67d387f08a99aee702c4cd54e587c6ba91
bugzilla: 185879 https://gitee.com/openeuler/kernel/issues/I4QUVG

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9b44cb67d387f08a99aee702c4cd54e587c6ba91

--------------------------------

[ Upstream commit 19d36c5f ]

We deal with IPv6 packets, so we need to use IP6CB(skb)->flags and
IP6SKB_REROUTED, instead of IPCB(skb)->flags and IPSKB_REROUTED

Found by code inspection, please double check that fixing this bug
does not surface other bugs.

Fixes: 09ee9dba ("ipv6: Reinject IPv6 packets if IPsec policy matches after SNAT")
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Tobias Brunner <tobias@strongswan.org>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: David Ahern <dsahern@kernel.org>
Reviewed-by: NDavid Ahern <dsahern@kernel.org>
Tested-by: NTobias Brunner <tobias@strongswan.org>
Acked-by: NTobias Brunner <tobias@strongswan.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

net/ipv6/ip6_output.c

@@ -193,7 +193,7 @@ static int __ip6_finish_output(struct net *net, struct sock *sk, struct sk_buff
 #if defined(CONFIG_NETFILTER) && defined(CONFIG_XFRM)
 	/* Policy lookup after SNAT yielded a new policy */
 	if (skb_dst(skb)->xfrm) {
-		IPCB(skb)->flags |= IPSKB_REROUTED;
+		IP6CB(skb)->flags |= IP6SKB_REROUTED;
 		return dst_output(net, sk, skb);
 	}
 #endif