projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 LT |
7 | #include <linux/ip6_tunnel.h> |
| 8 | ||
| c12b395a | 9 | #define IP6TUNNEL_ERR_TIMEO (30*HZ) |
| 10 | ||
| 1da177e4 LT |
11 | /* capable of sending packets */ |
| 12 | #define IP6_TNL_F_CAP_XMIT 0x10000 | |
| 13 | /* capable of receiving packets */ | |
| 14 | #define IP6_TNL_F_CAP_RCV 0x20000 | |
| d0087b29 VN |
15 | /* determine capability on a per-packet basis */ |
| 16 | #define IP6_TNL_F_CAP_PER_PACKET 0x40000 | |
| 1da177e4 | 17 | |
| c12b395a | 18 | struct __ip6_tnl_parm { |
| 19 | char name[IFNAMSIZ]; /* name of tunnel device */ | |
| 20 | int link; /* ifindex of underlying L2 interface */ | |
| 21 | __u8 proto; /* tunnel protocol */ | |
| 22 | __u8 encap_limit; /* encapsulation limit for tunnel */ | |
| 23 | __u8 hop_limit; /* hop limit for tunnel */ | |
| 24 | __be32 flowinfo; /* traffic class and flowlabel for tunnel */ | |
| 25 | __u32 flags; /* tunnel flags */ | |
| 26 | struct in6_addr laddr; /* local tunnel end-point address */ | |
| 27 | struct in6_addr raddr; /* remote tunnel end-point address */ | |
| 28 | ||
| 29 | __be16 i_flags; | |
| 30 | __be16 o_flags; | |
| 31 | __be32 i_key; | |
| 32 | __be32 o_key; | |
| 33 | }; | |
| 1da177e4 | 34 | |
| c12b395a | 35 | /* IPv6 tunnel */ |
| 1da177e4 | 36 | struct ip6_tnl { |
| 6f0bcf15 | 37 | struct ip6_tnl __rcu *next; /* next tunnel in list */ |
| 1da177e4 | 38 | struct net_device *dev; /* virtual device associated with tunnel */ |
| c12b395a | 39 | struct __ip6_tnl_parm parms; /* tunnel configuration parameters */ |
| 1da177e4 LT |
40 | struct flowi fl; /* flowi template for xmit */ |
| 41 | struct dst_entry *dst_cache; /* cached dst */ | |
| 42 | u32 dst_cookie; | |
| c12b395a | 43 | |
| 44 | int err_count; | |
| 45 | unsigned long err_time; | |
| 46 | ||
| 47 | /* These fields used only by GRE */ | |
| 48 | __u32 i_seqno; /* The last seen seqno */ | |
| 49 | __u32 o_seqno; /* The last output seqno */ | |
| 50 | int hlen; /* Precalculated GRE header length */ | |
| 51 | int mlink; | |
| 1da177e4 LT |
52 | }; |
| 53 | ||
| 54 | /* Tunnel encapsulation limit destination sub-option */ | |
| 55 | ||
| 56 | struct ipv6_tlv_tnl_enc_lim { | |
| 57 | __u8 type; /* type-code for option */ | |
| 58 | __u8 length; /* option length */ | |
| 59 | __u8 encap_limit; /* tunnel encapsulation limit */ | |
| bc10502d | 60 | } __packed; |
| 1da177e4 | 61 | |
| c12b395a | 62 | struct dst_entry *ip6_tnl_dst_check(struct ip6_tnl *t); |
| 63 | void ip6_tnl_dst_reset(struct ip6_tnl *t); | |
| 64 | void ip6_tnl_dst_store(struct ip6_tnl *t, struct dst_entry *dst); | |
| 65 | int ip6_tnl_rcv_ctl(struct ip6_tnl *t, const struct in6_addr *laddr, | |
| 66 | const struct in6_addr *raddr); | |
| 67 | int ip6_tnl_xmit_ctl(struct ip6_tnl *t); | |
| 68 | __u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw); | |
| 69 | __u32 ip6_tnl_get_cap(struct ip6_tnl *t, const struct in6_addr *laddr, | |
| 70 | const struct in6_addr *raddr); | |
| 71 | ||
| e8f72ea4 CW |
72 | static inline void ip6tunnel_xmit(struct sk_buff *skb, struct net_device *dev) |
| 73 | { | |
| 74 | struct net_device_stats *stats = &dev->stats; | |
| 75 | int pkt_len, err; | |
| 76 | ||
| 77 | nf_reset(skb); | |
| 78 | pkt_len = skb->len; | |
| 79 | err = ip6_local_out(skb); | |
| 80 | ||
| 81 | if (net_xmit_eval(err) == 0) { | |
| 82 | struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats); | |
| 83 | u64_stats_update_begin(&tstats->syncp); | |
| 84 | tstats->tx_bytes += pkt_len; | |
| 85 | tstats->tx_packets++; | |
| 86 | u64_stats_update_end(&tstats->syncp); | |
| 87 | } else { | |
| 88 | stats->tx_errors++; | |
| 89 | stats->tx_aborted_errors++; | |
| 90 | } | |
| 91 | } | |
| 1da177e4 | 92 | #endif |