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1da177e4 LT |
1 | #ifndef __NET_IPIP_H |
2 | #define __NET_IPIP_H 1 | |
3 | ||
4 | #include <linux/if_tunnel.h> | |
5 | ||
6 | /* Keep error state on tunnel for 30 sec */ | |
7 | #define IPTUNNEL_ERR_TIMEO (30*HZ) | |
8 | ||
9 | struct ip_tunnel | |
10 | { | |
11 | struct ip_tunnel *next; | |
12 | struct net_device *dev; | |
13 | struct net_device_stats stat; | |
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; | |
26 | }; | |
27 | ||
28 | #define IPTUNNEL_XMIT() do { \ | |
29 | int err; \ | |
30 | int pkt_len = skb->len; \ | |
31 | \ | |
32 | skb->ip_summed = CHECKSUM_NONE; \ | |
33 | iph->tot_len = htons(skb->len); \ | |
34 | ip_select_ident(iph, &rt->u.dst, NULL); \ | |
35 | ip_send_check(iph); \ | |
36 | \ | |
37 | err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev, dst_output);\ | |
b9df3cb8 | 38 | if (net_xmit_eval(err) == 0) { \ |
1da177e4 LT |
39 | stats->tx_bytes += pkt_len; \ |
40 | stats->tx_packets++; \ | |
41 | } else { \ | |
42 | stats->tx_errors++; \ | |
43 | stats->tx_aborted_errors++; \ | |
44 | } \ | |
45 | } while (0) | |
46 | ||
1da177e4 | 47 | #endif |