| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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);\ |
| 38 | if (err == NET_XMIT_SUCCESS || err == NET_XMIT_CN) { \ |
| 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 | |
| 47 | |
| 48 | extern int sit_init(void); |
| 49 | extern void sit_cleanup(void); |
| 50 | |
| 51 | #endif |