diff options
Diffstat (limited to 'include/net/ip6_tunnel.h')
| -rw-r--r-- | include/net/ip6_tunnel.h | 64 |
1 files changed, 62 insertions, 2 deletions
diff --git a/include/net/ip6_tunnel.h b/include/net/ip6_tunnel.h index fc73e667b50..a5593dab6af 100644 --- a/include/net/ip6_tunnel.h +++ b/include/net/ip6_tunnel.h @@ -3,22 +3,53 @@ #include <linux/ipv6.h> #include <linux/netdevice.h> +#include <linux/if_tunnel.h> #include <linux/ip6_tunnel.h> +#define IP6TUNNEL_ERR_TIMEO (30*HZ) + /* capable of sending packets */ #define IP6_TNL_F_CAP_XMIT 0x10000 /* capable of receiving packets */ #define IP6_TNL_F_CAP_RCV 0x20000 +/* determine capability on a per-packet basis */ +#define IP6_TNL_F_CAP_PER_PACKET 0x40000 -/* IPv6 tunnel */ +struct __ip6_tnl_parm { + char name[IFNAMSIZ]; /* name of tunnel device */ + int link; /* ifindex of underlying L2 interface */ + __u8 proto; /* tunnel protocol */ + __u8 encap_limit; /* encapsulation limit for tunnel */ + __u8 hop_limit; /* hop limit for tunnel */ + __be32 flowinfo; /* traffic class and flowlabel for tunnel */ + __u32 flags; /* tunnel flags */ + struct in6_addr laddr; /* local tunnel end-point address */ + struct in6_addr raddr; /* remote tunnel end-point address */ + __be16 i_flags; + __be16 o_flags; + __be32 i_key; + __be32 o_key; +}; + +/* IPv6 tunnel */ struct ip6_tnl { struct ip6_tnl __rcu *next; /* next tunnel in list */ struct net_device *dev; /* virtual device associated with tunnel */ - struct ip6_tnl_parm parms; /* tunnel configuration parameters */ + struct net *net; /* netns for packet i/o */ + struct __ip6_tnl_parm parms; /* tunnel configuration parameters */ struct flowi fl; /* flowi template for xmit */ struct dst_entry *dst_cache; /* cached dst */ u32 dst_cookie; + + int err_count; + unsigned long err_time; + + /* These 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; }; /* Tunnel encapsulation limit destination sub-option */ @@ -29,4 +60,33 @@ struct ipv6_tlv_tnl_enc_lim { __u8 encap_limit; /* tunnel encapsulation limit */ } __packed; +struct dst_entry *ip6_tnl_dst_check(struct ip6_tnl *t); +void ip6_tnl_dst_reset(struct ip6_tnl *t); +void ip6_tnl_dst_store(struct ip6_tnl *t, struct dst_entry *dst); +int ip6_tnl_rcv_ctl(struct ip6_tnl *t, const struct in6_addr *laddr, + const struct in6_addr *raddr); +int ip6_tnl_xmit_ctl(struct ip6_tnl *t); +__u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw); +__u32 ip6_tnl_get_cap(struct ip6_tnl *t, const struct in6_addr *laddr, + const struct in6_addr *raddr); + +static inline void ip6tunnel_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct net_device_stats *stats = &dev->stats; + int pkt_len, err; + + pkt_len = skb->len; + err = ip6_local_out(skb); + + if (net_xmit_eval(err) == 0) { + struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats); + u64_stats_update_begin(&tstats->syncp); + tstats->tx_bytes += pkt_len; + tstats->tx_packets++; + u64_stats_update_end(&tstats->syncp); + } else { + stats->tx_errors++; + stats->tx_aborted_errors++; + } +} #endif |