Revert "sit: stateless autoconf for isatap"
[linux-2.6.git] / include / net / ipip.h
1 #ifndef __NET_IPIP_H
2 #define __NET_IPIP_H 1
3
4 #include <linux/if_tunnel.h>
5 #include <net/ip.h>
6
7 /* Keep error state on tunnel for 30 sec */
8 #define IPTUNNEL_ERR_TIMEO      (30*HZ)
9
10 struct ip_tunnel
11 {
12         struct ip_tunnel        *next;
13         struct net_device       *dev;
14
15         int                     err_count;      /* Number of arrived ICMP errors */
16         unsigned long           err_time;       /* Time when the last ICMP error arrived */
17
18         /* These four fields used only by GRE */
19         __u32                   i_seqno;        /* The last seen seqno  */
20         __u32                   o_seqno;        /* The last output seqno */
21         int                     hlen;           /* Precalculated GRE header length */
22         int                     mlink;
23
24         struct ip_tunnel_parm   parms;
25
26         struct ip_tunnel_prl_entry      *prl;           /* potential router list */
27         unsigned int                    prl_count;      /* # of entries in PRL */
28 };
29
30 struct ip_tunnel_prl_entry
31 {
32         struct ip_tunnel_prl_entry      *next;
33         __be32                          addr;
34         u16                             flags;
35 };
36
37 #define IPTUNNEL_XMIT() do {                                            \
38         int err;                                                        \
39         int pkt_len = skb->len - skb_transport_offset(skb);             \
40                                                                         \
41         skb->ip_summed = CHECKSUM_NONE;                                 \
42         ip_select_ident(iph, &rt->u.dst, NULL);                         \
43                                                                         \
44         err = ip_local_out(skb);                                        \
45         if (net_xmit_eval(err) == 0) {                                  \
46                 stats->tx_bytes += pkt_len;                             \
47                 stats->tx_packets++;                                    \
48         } else {                                                        \
49                 stats->tx_errors++;                                     \
50                 stats->tx_aborted_errors++;                             \
51         }                                                               \
52 } while (0)
53
54 #endif