| #include <linux/if_tunnel.h> |
| /* Keep error state on tunnel for 30 sec */ |
| #define IPTUNNEL_ERR_TIMEO (30*HZ) |
| 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 */ |
| struct ip_tunnel_parm parms; |
| #define IPTUNNEL_XMIT() do { \ |
| int pkt_len = skb->len; \ |
| skb->ip_summed = CHECKSUM_NONE; \ |
| iph->tot_len = htons(skb->len); \ |
| ip_select_ident(iph, &rt->u.dst, NULL); \ |
| 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_aborted_errors++; \ |