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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; | |
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 | }; | |
28 | ||
29 | #define IPTUNNEL_XMIT() do { \ | |
30 | int err; \ | |
31 | int pkt_len = skb->len; \ | |
32 | \ | |
33 | skb->ip_summed = CHECKSUM_NONE; \ | |
1da177e4 | 34 | ip_select_ident(iph, &rt->u.dst, NULL); \ |
1da177e4 | 35 | \ |
c439cb2e | 36 | err = ip_local_out(skb); \ |
b9df3cb8 | 37 | if (net_xmit_eval(err) == 0) { \ |
1da177e4 LT |
38 | stats->tx_bytes += pkt_len; \ |
39 | stats->tx_packets++; \ | |
40 | } else { \ | |
41 | stats->tx_errors++; \ | |
42 | stats->tx_aborted_errors++; \ | |
43 | } \ | |
44 | } while (0) | |
45 | ||
1da177e4 | 46 | #endif |