blob: a32654d52730d751a4c89dd8f8fea98b57add370 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
#ifndef __NET_IPIP_H
#define __NET_IPIP_H 1
#include <linux/if_tunnel.h>
#include <net/ip.h>
/* Keep error state on tunnel for 30 sec */
#define IPTUNNEL_ERR_TIMEO (30*HZ)
/* 6rd prefix/relay information */
struct ip_tunnel_6rd_parm {
struct in6_addr prefix;
__be32 relay_prefix;
u16 prefixlen;
u16 relay_prefixlen;
};
struct ip_tunnel {
struct ip_tunnel __rcu *next;
struct net_device *dev;
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;
/* for SIT */
#ifdef CONFIG_IPV6_SIT_6RD
struct ip_tunnel_6rd_parm ip6rd;
#endif
struct ip_tunnel_prl_entry __rcu *prl; /* potential router list */
unsigned int prl_count; /* # of entries in PRL */
};
struct ip_tunnel_prl_entry {
struct ip_tunnel_prl_entry __rcu *next;
__be32 addr;
u16 flags;
struct rcu_head rcu_head;
};
#define __IPTUNNEL_XMIT(stats1, stats2) do { \
int err; \
int pkt_len = skb->len - skb_transport_offset(skb); \
\
skb->ip_summed = CHECKSUM_NONE; \
ip_select_ident(iph, &rt->dst, NULL); \
\
err = ip_local_out(skb); \
if (likely(net_xmit_eval(err) == 0)) { \
(stats1)->tx_bytes += pkt_len; \
(stats1)->tx_packets++; \
} else { \
(stats2)->tx_errors++; \
(stats2)->tx_aborted_errors++; \
} \
} while (0)
#define IPTUNNEL_XMIT() __IPTUNNEL_XMIT(txq, stats)
#endif
|
