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#include <net/ip.h>
6
7/* Keep error state on tunnel for 30 sec */
8#define IPTUNNEL_ERR_TIMEO (30*HZ)
9
10struct ip_tunnel
11{
12 struct ip_tunnel *next;
13 struct net_device *dev;
14 struct net_device_stats stat;
15
16 int recursion; /* Depth of hard_start_xmit recursion */
17 int err_count; /* Number of arrived ICMP errors */
18 unsigned long err_time; /* Time when the last ICMP error arrived */
19
20 /* These four fields used only by GRE */
21 __u32 i_seqno; /* The last seen seqno */
22 __u32 o_seqno; /* The last output seqno */
23 int hlen; /* Precalculated GRE header length */
24 int mlink;
25
26 struct ip_tunnel_parm parms;
27};
28
29#define IPTUNNEL_XMIT() do { \
30 int err; \
31 int pkt_len = skb->len; \
32 \
33 skb->ip_summed = CHECKSUM_NONE; \
34 ip_select_ident(iph, &rt->u.dst, NULL); \
35 \
36 err = ip_local_out(skb); \
37 if (net_xmit_eval(err) == 0) { \
38 stats->tx_bytes += pkt_len; \
39 stats->tx_packets++; \
40 } else { \
41 stats->tx_errors++; \
42 stats->tx_aborted_errors++; \
43 } \
44} while (0)
45
46#endif