blob: a85bda64b8528ce2f7b8c4416ba10e83f654b9af [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __NET_IPIP_H
2#define __NET_IPIP_H 1
3
4#include <linux/if_tunnel.h>
Herbert Xuc439cb22008-01-11 19:14:00 -08005#include <net/ip.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07006
7/* Keep error state on tunnel for 30 sec */
8#define IPTUNNEL_ERR_TIMEO (30*HZ)
9
10struct ip_tunnel
11{
12 struct ip_tunnel *next;
13 struct net_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -070014
15 int recursion; /* Depth of hard_start_xmit recursion */
16 int err_count; /* Number of arrived ICMP errors */
17 unsigned long err_time; /* Time when the last ICMP error arrived */
18
19 /* These four fields used only by GRE */
20 __u32 i_seqno; /* The last seen seqno */
21 __u32 o_seqno; /* The last output seqno */
22 int hlen; /* Precalculated GRE header length */
23 int mlink;
24
25 struct ip_tunnel_parm parms;
YOSHIFUJI Hideaki300aaee2008-03-24 18:28:39 +090026
Templin, Fred Lfadf6bf2008-03-11 18:35:59 -040027 struct ip_tunnel_prl_entry *prl; /* potential router list */
YOSHIFUJI Hideaki300aaee2008-03-24 18:28:39 +090028 unsigned int prl_count; /* # of entries in PRL */
Templin, Fred Lfadf6bf2008-03-11 18:35:59 -040029};
30
31struct ip_tunnel_prl_entry
32{
33 struct ip_tunnel_prl_entry *next;
YOSHIFUJI Hideaki300aaee2008-03-24 18:28:39 +090034 __be32 addr;
35 u16 flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -070036};
37
38#define IPTUNNEL_XMIT() do { \
39 int err; \
40 int pkt_len = skb->len; \
41 \
42 skb->ip_summed = CHECKSUM_NONE; \
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 ip_select_ident(iph, &rt->u.dst, NULL); \
Linus Torvalds1da177e2005-04-16 15:20:36 -070044 \
Herbert Xuc439cb22008-01-11 19:14:00 -080045 err = ip_local_out(skb); \
Gerrit Renkerb9df3cb2006-11-14 11:21:36 -020046 if (net_xmit_eval(err) == 0) { \
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 stats->tx_bytes += pkt_len; \
48 stats->tx_packets++; \
49 } else { \
50 stats->tx_errors++; \
51 stats->tx_aborted_errors++; \
52 } \
53} while (0)
54
Linus Torvalds1da177e2005-04-16 15:20:36 -070055#endif