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 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 if (tpi->proto == htons(ETH_P_ERSPAN) ||
tpi->proto == htons(ETH_P_ERSPAN2))
itn = net_generic(net, erspan_net_id);
else
return PACKET_RCVD;
res = __ipgre_rcv(skb, tpi, itn, hdr_len, false);
return res;
}
