Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _NET_IP6_TUNNEL_H |
2 | #define _NET_IP6_TUNNEL_H | |
3 | ||
4 | #include <linux/ipv6.h> | |
5 | #include <linux/netdevice.h> | |
c5441932 | 6 | #include <linux/if_tunnel.h> |
1da177e4 | 7 | #include <linux/ip6_tunnel.h> |
039f5062 | 8 | #include <net/ip_tunnels.h> |
1da177e4 | 9 | |
c12b395a | 10 | #define IP6TUNNEL_ERR_TIMEO (30*HZ) |
11 | ||
1da177e4 LT |
12 | /* capable of sending packets */ |
13 | #define IP6_TNL_F_CAP_XMIT 0x10000 | |
14 | /* capable of receiving packets */ | |
15 | #define IP6_TNL_F_CAP_RCV 0x20000 | |
d0087b29 VN |
16 | /* determine capability on a per-packet basis */ |
17 | #define IP6_TNL_F_CAP_PER_PACKET 0x40000 | |
1da177e4 | 18 | |
c12b395a | 19 | struct __ip6_tnl_parm { |
20 | char name[IFNAMSIZ]; /* name of tunnel device */ | |
21 | int link; /* ifindex of underlying L2 interface */ | |
22 | __u8 proto; /* tunnel protocol */ | |
23 | __u8 encap_limit; /* encapsulation limit for tunnel */ | |
24 | __u8 hop_limit; /* hop limit for tunnel */ | |
25 | __be32 flowinfo; /* traffic class and flowlabel for tunnel */ | |
26 | __u32 flags; /* tunnel flags */ | |
27 | struct in6_addr laddr; /* local tunnel end-point address */ | |
28 | struct in6_addr raddr; /* remote tunnel end-point address */ | |
29 | ||
30 | __be16 i_flags; | |
31 | __be16 o_flags; | |
32 | __be32 i_key; | |
33 | __be32 o_key; | |
34 | }; | |
1da177e4 | 35 | |
cdf3464e | 36 | struct ip6_tnl_dst { |
70da5b5c MKL |
37 | seqlock_t lock; |
38 | struct dst_entry __rcu *dst; | |
cdf3464e MKL |
39 | u32 cookie; |
40 | }; | |
41 | ||
c12b395a | 42 | /* IPv6 tunnel */ |
1da177e4 | 43 | struct ip6_tnl { |
6f0bcf15 | 44 | struct ip6_tnl __rcu *next; /* next tunnel in list */ |
1da177e4 | 45 | struct net_device *dev; /* virtual device associated with tunnel */ |
0bd87628 | 46 | struct net *net; /* netns for packet i/o */ |
c12b395a | 47 | struct __ip6_tnl_parm parms; /* tunnel configuration parameters */ |
1da177e4 | 48 | struct flowi fl; /* flowi template for xmit */ |
cdf3464e | 49 | struct ip6_tnl_dst __percpu *dst_cache; /* cached dst */ |
c12b395a | 50 | |
51 | int err_count; | |
52 | unsigned long err_time; | |
53 | ||
54 | /* These fields used only by GRE */ | |
55 | __u32 i_seqno; /* The last seen seqno */ | |
56 | __u32 o_seqno; /* The last output seqno */ | |
57 | int hlen; /* Precalculated GRE header length */ | |
58 | int mlink; | |
1da177e4 LT |
59 | }; |
60 | ||
61 | /* Tunnel encapsulation limit destination sub-option */ | |
62 | ||
63 | struct ipv6_tlv_tnl_enc_lim { | |
64 | __u8 type; /* type-code for option */ | |
65 | __u8 length; /* option length */ | |
66 | __u8 encap_limit; /* tunnel encapsulation limit */ | |
bc10502d | 67 | } __packed; |
1da177e4 | 68 | |
f230d1e8 | 69 | struct dst_entry *ip6_tnl_dst_get(struct ip6_tnl *t); |
cdf3464e MKL |
70 | int ip6_tnl_dst_init(struct ip6_tnl *t); |
71 | void ip6_tnl_dst_destroy(struct ip6_tnl *t); | |
c12b395a | 72 | void ip6_tnl_dst_reset(struct ip6_tnl *t); |
f230d1e8 | 73 | void ip6_tnl_dst_set(struct ip6_tnl *t, struct dst_entry *dst); |
c12b395a | 74 | int ip6_tnl_rcv_ctl(struct ip6_tnl *t, const struct in6_addr *laddr, |
75 | const struct in6_addr *raddr); | |
d5005140 SK |
76 | int ip6_tnl_xmit_ctl(struct ip6_tnl *t, const struct in6_addr *laddr, |
77 | const struct in6_addr *raddr); | |
c12b395a | 78 | __u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw); |
79 | __u32 ip6_tnl_get_cap(struct ip6_tnl *t, const struct in6_addr *laddr, | |
80 | const struct in6_addr *raddr); | |
1728d4fa | 81 | struct net *ip6_tnl_get_link_net(const struct net_device *dev); |
ecf2c06a | 82 | int ip6_tnl_get_iflink(const struct net_device *dev); |
c12b395a | 83 | |
0efeff29 | 84 | #ifdef CONFIG_INET |
79b16aad DM |
85 | static inline void ip6tunnel_xmit(struct sock *sk, struct sk_buff *skb, |
86 | struct net_device *dev) | |
e8f72ea4 | 87 | { |
e8f72ea4 CW |
88 | int pkt_len, err; |
89 | ||
83cf9a25 | 90 | pkt_len = skb->len - skb_inner_network_offset(skb); |
33224b16 | 91 | err = ip6_local_out(dev_net(skb_dst(skb)->dev), sk, skb); |
039f5062 PS |
92 | if (unlikely(net_xmit_eval(err))) |
93 | pkt_len = -1; | |
94 | iptunnel_xmit_stats(dev, pkt_len); | |
e8f72ea4 | 95 | } |
1da177e4 | 96 | #endif |
0efeff29 | 97 | #endif |