Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...
[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 /* 6rd prefix/relay information */
11 struct ip_tunnel_6rd_parm {
12         struct in6_addr         prefix;
13         __be32                  relay_prefix;
14         u16                     prefixlen;
15         u16                     relay_prefixlen;
16 };
17
18 struct ip_tunnel {
19         struct ip_tunnel __rcu  *next;
20         struct net_device       *dev;
21
22         int                     err_count;      /* Number of arrived ICMP errors */
23         unsigned long           err_time;       /* Time when the last ICMP error arrived */
24
25         /* These four fields used only by GRE */
26         __u32                   i_seqno;        /* The last seen seqno  */
27         __u32                   o_seqno;        /* The last output seqno */
28         int                     hlen;           /* Precalculated GRE header length */
29         int                     mlink;
30
31         struct ip_tunnel_parm   parms;
32
33         /* for SIT */
34 #ifdef CONFIG_IPV6_SIT_6RD
35         struct ip_tunnel_6rd_parm       ip6rd;
36 #endif
37         struct ip_tunnel_prl_entry __rcu *prl;          /* potential router list */
38         unsigned int                    prl_count;      /* # of entries in PRL */
39 };
40
41 struct ip_tunnel_prl_entry {
42         struct ip_tunnel_prl_entry __rcu *next;
43         __be32                          addr;
44         u16                             flags;
45         struct rcu_head                 rcu_head;
46 };
47
48 #define __IPTUNNEL_XMIT(stats1, stats2) do {                            \
49         int err;                                                        \
50         int pkt_len = skb->len - skb_transport_offset(skb);             \
51                                                                         \
52         skb->ip_summed = CHECKSUM_NONE;                                 \
53         ip_select_ident(iph, &rt->dst, NULL);                           \
54                                                                         \
55         err = ip_local_out(skb);                                        \
56         if (likely(net_xmit_eval(err) == 0)) {                          \
57                 (stats1)->tx_bytes += pkt_len;                          \
58                 (stats1)->tx_packets++;                                 \
59         } else {                                                        \
60                 (stats2)->tx_errors++;                                  \
61                 (stats2)->tx_aborted_errors++;                          \
62         }                                                               \
63 } while (0)
64
65 #define IPTUNNEL_XMIT() __IPTUNNEL_XMIT(txq, stats)
66
67 #endif