[IPV6] SIT: Add PRL management 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         struct net_device_stats stat;
15
16         int                     recursion;      /* Depth of hard_start_xmit recursion */
17         int                     err_count;      /* Number of arrived ICMP errors */
18         unsigned long           err_time;       /* Time when the last ICMP error arrived */
19
20         /* These four fields used only by GRE */
21         __u32                   i_seqno;        /* The last seen seqno  */
22         __u32                   o_seqno;        /* The last output seqno */
23         int                     hlen;           /* Precalculated GRE header length */
24         int                     mlink;
25
26         struct ip_tunnel_parm   parms;
27         struct ip_tunnel_prl_entry      *prl;           /* potential router list */
28 };
29
30 struct ip_tunnel_prl_entry
31 {
32         struct ip_tunnel_prl_entry      *next;
33         struct ip_tunnel_prl            entry;
34 };
35
36 #define IPTUNNEL_XMIT() do {                                            \
37         int err;                                                        \
38         int pkt_len = skb->len;                                         \
39                                                                         \
40         skb->ip_summed = CHECKSUM_NONE;                                 \
41         ip_select_ident(iph, &rt->u.dst, NULL);                         \
42                                                                         \
43         err = ip_local_out(skb);                                        \
44         if (net_xmit_eval(err) == 0) {                                  \
45                 stats->tx_bytes += pkt_len;                             \
46                 stats->tx_packets++;                                    \
47         } else {                                                        \
48                 stats->tx_errors++;                                     \
49                 stats->tx_aborted_errors++;                             \
50         }                                                               \
51 } while (0)
52
53 #endif