提交 244a797b 编写于 作者: J Jiri Benc 提交者: David S. Miller

gre: move iptunnel_pull_header down to ipgre_rcv

This will allow to make the pull dependent on the tunnel type.
Signed-off-by: NJiri Benc <jbenc@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 00b20340
......@@ -260,7 +260,8 @@ static __be32 tunnel_id_to_key(__be64 x)
#endif
}
static int ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi)
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 metadata_dst *tun_dst = NULL;
......@@ -278,6 +279,9 @@ static int ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi)
iph->saddr, iph->daddr, tpi->key);
if (tunnel) {
if (iptunnel_pull_header(skb, hdr_len, tpi->proto, false) < 0)
goto drop;
skb_pop_mac_header(skb);
if (tunnel->collect_md) {
__be16 flags;
......@@ -294,6 +298,10 @@ static int ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi)
return PACKET_RCVD;
}
return PACKET_REJECT;
drop:
kfree_skb(skb);
return PACKET_RCVD;
}
static int gre_rcv(struct sk_buff *skb)
......@@ -314,10 +322,7 @@ static int gre_rcv(struct sk_buff *skb)
if (hdr_len < 0)
goto drop;
if (iptunnel_pull_header(skb, hdr_len, tpi.proto, false))
goto drop;
if (ipgre_rcv(skb, &tpi) == PACKET_RCVD)
if (ipgre_rcv(skb, &tpi, hdr_len) == PACKET_RCVD)
return 0;
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
......
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