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1da177e4 LT |
1 | #ifndef __NET_IPIP_H |
2 | #define __NET_IPIP_H 1 | |
3 | ||
4 | #include <linux/if_tunnel.h> | |
c439cb2e | 5 | #include <net/ip.h> |
1da177e4 LT |
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; | |
1da177e4 LT |
14 | |
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; | |
300aaeea | 26 | |
fadf6bf0 | 27 | struct ip_tunnel_prl_entry *prl; /* potential router list */ |
300aaeea | 28 | unsigned int prl_count; /* # of entries in PRL */ |
fadf6bf0 TF |
29 | }; |
30 | ||
31 | struct ip_tunnel_prl_entry | |
32 | { | |
33 | struct ip_tunnel_prl_entry *next; | |
300aaeea YH |
34 | __be32 addr; |
35 | u16 flags; | |
1da177e4 LT |
36 | }; |
37 | ||
38 | #define IPTUNNEL_XMIT() do { \ | |
39 | int err; \ | |
64194c31 | 40 | int pkt_len = skb->len - skb_transport_offset(skb); \ |
1da177e4 LT |
41 | \ |
42 | skb->ip_summed = CHECKSUM_NONE; \ | |
1da177e4 | 43 | ip_select_ident(iph, &rt->u.dst, NULL); \ |
1da177e4 | 44 | \ |
c439cb2e | 45 | err = ip_local_out(skb); \ |
b9df3cb8 | 46 | if (net_xmit_eval(err) == 0) { \ |
1da177e4 LT |
47 | 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 | ||
1da177e4 | 55 | #endif |