datapath/linux/compat/include/net/ip_tunnels.h

   1 #ifndef __NET_IP_TUNNELS_WRAPPER_H
   2 #define __NET_IP_TUNNELS_WRAPPER_H 1
   3
   4 #include <linux/if_tunnel.h>
   5 #include <linux/netdevice.h>
   6 #include <linux/skbuff.h>
   7 #include <linux/types.h>
   8 #include <net/dsfield.h>
   9 #include <net/flow.h>
  10 #include <net/inet_ecn.h>
  11 #include <net/ip.h>
  12 #include <net/rtnetlink.h>
  13
  14 #define TUNNEL_CSUM     __cpu_to_be16(0x01)
  15 #define TUNNEL_ROUTING  __cpu_to_be16(0x02)
  16 #define TUNNEL_KEY      __cpu_to_be16(0x04)
  17 #define TUNNEL_SEQ      __cpu_to_be16(0x08)
  18 #define TUNNEL_STRICT   __cpu_to_be16(0x10)
  19 #define TUNNEL_REC      __cpu_to_be16(0x20)
  20 #define TUNNEL_VERSION  __cpu_to_be16(0x40)
  21 #define TUNNEL_NO_KEY   __cpu_to_be16(0x80)
  22 #define TUNNEL_DONT_FRAGMENT    __cpu_to_be16(0x0100)
  23
  24 struct tnl_ptk_info {
  25         __be16 flags;
  26         __be16 proto;
  27         __be32 key;
  28         __be32 seq;
  29 };
  30
  31 #define PACKET_RCVD     0
  32 #define PACKET_REJECT   1
  33
  34 static inline void tunnel_ip_select_ident(struct sk_buff *skb,
  35                                           const struct iphdr  *old_iph,
  36                                           struct dst_entry *dst)
  37 {
  38         struct iphdr *iph = ip_hdr(skb);
  39
  40         /* Use inner packet iph-id if possible. */
  41         if (skb->protocol == htons(ETH_P_IP) && old_iph->id)
  42                 iph->id = old_iph->id;
  43         else
  44                 __ip_select_ident(iph, dst,
  45                                 (skb_shinfo(skb)->gso_segs ?: 1) - 1);
  46 }
  47
  48 int iptunnel_xmit(struct net *net, struct rtable *rt,
  49                   struct sk_buff *skb,
  50                   __be32 src, __be32 dst, __u8 proto,
  51                   __u8 tos, __u8 ttl, __be16 df);
  52
  53 int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto);
  54 #endif /* __NET_IP_TUNNELS_H */