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1da177e4 LT |
1 | #ifndef __NET_IPIP_H |
2 | #define __NET_IPIP_H 1 | |
3 | ||
4 | #include <linux/if_tunnel.h> | |
60769a5d | 5 | #include <net/gro_cells.h> |
c439cb2e | 6 | #include <net/ip.h> |
1da177e4 LT |
7 | |
8 | /* Keep error state on tunnel for 30 sec */ | |
9 | #define IPTUNNEL_ERR_TIMEO (30*HZ) | |
10 | ||
fa857afc | 11 | /* 6rd prefix/relay information */ |
fd2c3ef7 | 12 | struct ip_tunnel_6rd_parm { |
fa857afc YH |
13 | struct in6_addr prefix; |
14 | __be32 relay_prefix; | |
15 | u16 prefixlen; | |
16 | u16 relay_prefixlen; | |
17 | }; | |
18 | ||
fd2c3ef7 | 19 | struct ip_tunnel { |
6f0bcf15 | 20 | struct ip_tunnel __rcu *next; |
1da177e4 | 21 | struct net_device *dev; |
1da177e4 | 22 | |
1da177e4 LT |
23 | int err_count; /* Number of arrived ICMP errors */ |
24 | unsigned long err_time; /* Time when the last ICMP error arrived */ | |
25 | ||
26 | /* These four fields used only by GRE */ | |
27 | __u32 i_seqno; /* The last seen seqno */ | |
28 | __u32 o_seqno; /* The last output seqno */ | |
29 | int hlen; /* Precalculated GRE header length */ | |
30 | int mlink; | |
31 | ||
32 | struct ip_tunnel_parm parms; | |
300aaeea | 33 | |
fa857afc YH |
34 | /* for SIT */ |
35 | #ifdef CONFIG_IPV6_SIT_6RD | |
36 | struct ip_tunnel_6rd_parm ip6rd; | |
37 | #endif | |
b33eab08 | 38 | struct ip_tunnel_prl_entry __rcu *prl; /* potential router list */ |
300aaeea | 39 | unsigned int prl_count; /* # of entries in PRL */ |
60769a5d ED |
40 | |
41 | struct gro_cells gro_cells; | |
fadf6bf0 TF |
42 | }; |
43 | ||
fd2c3ef7 | 44 | struct ip_tunnel_prl_entry { |
b33eab08 | 45 | struct ip_tunnel_prl_entry __rcu *next; |
300aaeea YH |
46 | __be32 addr; |
47 | u16 flags; | |
ef9a9d11 | 48 | struct rcu_head rcu_head; |
1da177e4 LT |
49 | }; |
50 | ||
aa0010f8 AW |
51 | static inline void iptunnel_xmit(struct sk_buff *skb, struct net_device *dev) |
52 | { | |
53 | int err; | |
54 | struct iphdr *iph = ip_hdr(skb); | |
55 | int pkt_len = skb->len - skb_transport_offset(skb); | |
56 | struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats); | |
1da177e4 | 57 | |
aa0010f8 AW |
58 | nf_reset(skb); |
59 | skb->ip_summed = CHECKSUM_NONE; | |
60 | ip_select_ident(iph, skb_dst(skb), NULL); | |
61 | ||
62 | err = ip_local_out(skb); | |
63 | if (likely(net_xmit_eval(err) == 0)) { | |
64 | u64_stats_update_begin(&tstats->syncp); | |
65 | tstats->tx_bytes += pkt_len; | |
66 | tstats->tx_packets++; | |
67 | u64_stats_update_end(&tstats->syncp); | |
68 | } else { | |
69 | dev->stats.tx_errors++; | |
70 | dev->stats.tx_aborted_errors++; | |
71 | } | |
72 | } | |
290b895e | 73 | |
1da177e4 | 74 | #endif |