Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
9struct 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 (net_xmit_eval(err) == 0) { \
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#endif