diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/ip_gre.c | 39 |
1 files changed, 28 insertions, 11 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 8f377dad5489..2b267e71ebf5 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -260,26 +260,20 @@ static __be32 tunnel_id_to_key(__be64 x) #endif } -static int ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi, - int hdr_len) +static int __ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi, + struct ip_tunnel_net *itn, int hdr_len, bool raw_proto) { - struct net *net = dev_net(skb->dev); struct metadata_dst *tun_dst = NULL; - struct ip_tunnel_net *itn; const struct iphdr *iph; struct ip_tunnel *tunnel; - if (tpi->proto == htons(ETH_P_TEB)) - itn = net_generic(net, gre_tap_net_id); - else - itn = net_generic(net, ipgre_net_id); - iph = ip_hdr(skb); tunnel = ip_tunnel_lookup(itn, skb->dev->ifindex, tpi->flags, iph->saddr, iph->daddr, tpi->key); if (tunnel) { - if (iptunnel_pull_header(skb, hdr_len, tpi->proto, false) < 0) + if (__iptunnel_pull_header(skb, hdr_len, tpi->proto, + raw_proto, false) < 0) goto drop; skb_pop_mac_header(skb); @@ -297,13 +291,36 @@ static int ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi, ip_tunnel_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error); return PACKET_RCVD; } - return PACKET_REJECT; + return PACKET_NEXT; drop: kfree_skb(skb); return PACKET_RCVD; } +static int ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi, + int hdr_len) +{ + struct net *net = dev_net(skb->dev); + struct ip_tunnel_net *itn; + int res; + + if (tpi->proto == htons(ETH_P_TEB)) + itn = net_generic(net, gre_tap_net_id); + else + itn = net_generic(net, ipgre_net_id); + + res = __ipgre_rcv(skb, tpi, itn, hdr_len, false); + if (res == PACKET_NEXT && tpi->proto == htons(ETH_P_TEB)) { + /* ipgre tunnels in collect metadata mode should receive + * also ETH_P_TEB traffic. + */ + itn = net_generic(net, ipgre_net_id); + res = __ipgre_rcv(skb, tpi, itn, hdr_len, true); + } + return res; +} + static int gre_rcv(struct sk_buff *skb) { struct tnl_ptk_info tpi; |