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-rw-r--r--kernel/include/net/ip6_tunnel.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/kernel/include/net/ip6_tunnel.h b/kernel/include/net/ip6_tunnel.h
new file mode 100644
index 000000000..b8529aa1d
--- /dev/null
+++ b/kernel/include/net/ip6_tunnel.h
@@ -0,0 +1,96 @@
+#ifndef _NET_IP6_TUNNEL_H
+#define _NET_IP6_TUNNEL_H
+
+#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
+
+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 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 */
+
+struct ipv6_tlv_tnl_enc_lim {
+ __u8 type; /* type-code for option */
+ __u8 length; /* option length */
+ __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, const struct in6_addr *laddr,
+ const struct in6_addr *raddr);
+__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);
+struct net *ip6_tnl_get_link_net(const struct net_device *dev);
+int ip6_tnl_get_iflink(const struct net_device *dev);
+
+static inline void ip6tunnel_xmit(struct sock *sk, 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_sk(sk, 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