Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / net / ip6_tunnel.h

diff --git a/kernel/include/net/ip6_tunnel.h b/kernel/include/net/ip6_tunnel.h
new file mode 100644 (file)
index 0000000..b8529aa
--- /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