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authorTimo Teräs <timo.teras@iki.fi>2013-12-16 11:02:09 +0200
committerDavid S. Miller <davem@davemloft.net>2013-12-18 17:44:33 -0500
commit0e3da5bb8da45890b1dc413404e0f978ab71173e (patch)
tree2d3bd7a6e9c9c38520ac3bbe132e0f8940a9a18a /net/ipv4/ip_gre.c
parenta81d8762d71396f69d27187a909fcc69f1a7be75 (diff)
ip_gre: fix msg_name parsing for recvfrom/recvmsg
ipgre_header_parse() needs to parse the tunnel's ip header and it uses mac_header to locate the iphdr. This got broken when gre tunneling was refactored as mac_header is no longer updated to point to iphdr. Introduce skb_pop_mac_header() helper to do the mac_header assignment and use it in ipgre_rcv() to fix msg_name parsing. Bug introduced in commit c54419321455 (GRE: Refactor GRE tunneling code.) Cc: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_gre.c')
-rw-r--r--net/ipv4/ip_gre.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index d7aea4c5b940..e560ef34cf4b 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -217,6 +217,7 @@ static int ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi)
iph->saddr, iph->daddr, tpi->key);
if (tunnel) {
+ skb_pop_mac_header(skb);
ip_tunnel_rcv(tunnel, skb, tpi, log_ecn_error);
return PACKET_RCVD;
}