Commit 43b8c3b1 authored by Yuri Chislov's avatar Yuri Chislov Committed by Luis Henriques

ipv6: gre: fix wrong skb->protocol in WCCP

commit be6572fd upstream.

When using GRE redirection in WCCP, it sets the wrong skb->protocol,
that is, ETH_P_IP instead of ETH_P_IPV6 for the encapuslated traffic.

Fixes: c12b395a ("gre: Support GRE over IPv6")
Cc: Dmitry Kozlov <xeb@mail.ru>
Signed-off-by: default avatarYuri Chislov <yuri.chislov@gmail.com>
Tested-by: default avatarYuri Chislov <yuri.chislov@gmail.com>
Signed-off-by: default avatarDaniel Borkmann <dborkman@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
parent 2c3a8443
...@@ -499,11 +499,11 @@ static int ip6gre_rcv(struct sk_buff *skb) ...@@ -499,11 +499,11 @@ static int ip6gre_rcv(struct sk_buff *skb)
skb->protocol = gre_proto; skb->protocol = gre_proto;
/* WCCP version 1 and 2 protocol decoding. /* WCCP version 1 and 2 protocol decoding.
* - Change protocol to IP * - Change protocol to IPv6
* - When dealing with WCCPv2, Skip extra 4 bytes in GRE header * - When dealing with WCCPv2, Skip extra 4 bytes in GRE header
*/ */
if (flags == 0 && gre_proto == htons(ETH_P_WCCP)) { if (flags == 0 && gre_proto == htons(ETH_P_WCCP)) {
skb->protocol = htons(ETH_P_IP); skb->protocol = htons(ETH_P_IPV6);
if ((*(h + offset) & 0xF0) != 0x40) if ((*(h + offset) & 0xF0) != 0x40)
offset += 4; offset += 4;
} }
......
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