#ifndef __NET_IPIP_H #define __NET_IPIP_H 1 #include <linux/if_tunnel.h> /* Keep error state on tunnel for 30 sec */ #define IPTUNNEL_ERR_TIMEO (30*HZ) struct ip_tunnel { struct ip_tunnel *next; struct net_device *dev; struct net_device_stats stat; int recursion; /* Depth of hard_start_xmit recursion */ int err_count; /* Number of arrived ICMP errors */ unsigned long err_time; /* Time when the last ICMP error arrived */ /* These four fields used only by GRE */ __u32 i_seqno; /* The last seen seqno */ __u32 o_seqno; /* The last output seqno */ int hlen; /* Precalculated GRE header length */ int mlink; struct ip_tunnel_parm parms; }; #define IPTUNNEL_XMIT() do { \ int err; \ int pkt_len = skb->len; \ \ skb->ip_summed = CHECKSUM_NONE; \ iph->tot_len = htons(skb->len); \ ip_select_ident(iph, &rt->u.dst, NULL); \ ip_send_check(iph); \ \ err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev, dst_output);\ if (net_xmit_eval(err) == 0) { \ stats->tx_bytes += pkt_len; \ stats->tx_packets++; \ } else { \ stats->tx_errors++; \ stats->tx_aborted_errors++; \ } \ } while (0) #endif