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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /include/net/ip6_route.h
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'include/net/ip6_route.h')
-rw-r--r--include/net/ip6_route.h195
1 files changed, 195 insertions, 0 deletions
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
new file mode 100644
index 00000000..2ad92ca4
--- /dev/null
+++ b/include/net/ip6_route.h
@@ -0,0 +1,195 @@
+#ifndef _NET_IP6_ROUTE_H
+#define _NET_IP6_ROUTE_H
+
+#define IP6_RT_PRIO_USER 1024
+#define IP6_RT_PRIO_ADDRCONF 256
+
+struct route_info {
+ __u8 type;
+ __u8 length;
+ __u8 prefix_len;
+#if defined(__BIG_ENDIAN_BITFIELD)
+ __u8 reserved_h:3,
+ route_pref:2,
+ reserved_l:3;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ __u8 reserved_l:3,
+ route_pref:2,
+ reserved_h:3;
+#endif
+ __be32 lifetime;
+ __u8 prefix[0]; /* 0,8 or 16 */
+};
+
+#include <net/flow.h>
+#include <net/ip6_fib.h>
+#include <net/sock.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+
+#define RT6_LOOKUP_F_IFACE 0x00000001
+#define RT6_LOOKUP_F_REACHABLE 0x00000002
+#define RT6_LOOKUP_F_HAS_SADDR 0x00000004
+#define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008
+#define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010
+#define RT6_LOOKUP_F_SRCPREF_COA 0x00000020
+
+/*
+ * rt6_srcprefs2flags() and rt6_flags2srcprefs() translate
+ * between IPV6_ADDR_PREFERENCES socket option values
+ * IPV6_PREFER_SRC_TMP = 0x1
+ * IPV6_PREFER_SRC_PUBLIC = 0x2
+ * IPV6_PREFER_SRC_COA = 0x4
+ * and above RT6_LOOKUP_F_SRCPREF_xxx flags.
+ */
+static inline int rt6_srcprefs2flags(unsigned int srcprefs)
+{
+ /* No need to bitmask because srcprefs have only 3 bits. */
+ return srcprefs << 3;
+}
+
+static inline unsigned int rt6_flags2srcprefs(int flags)
+{
+ return (flags >> 3) & 7;
+}
+
+extern void rt6_bind_peer(struct rt6_info *rt,
+ int create);
+
+static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt)
+{
+ if (rt->rt6i_peer)
+ return rt->rt6i_peer;
+
+ rt6_bind_peer(rt, 0);
+ return rt->rt6i_peer;
+}
+
+extern void ip6_route_input(struct sk_buff *skb);
+
+extern struct dst_entry * ip6_route_output(struct net *net,
+ const struct sock *sk,
+ struct flowi6 *fl6);
+extern struct dst_entry * ip6_route_lookup(struct net *net,
+ struct flowi6 *fl6, int flags);
+
+extern int ip6_route_init(void);
+extern void ip6_route_cleanup(void);
+
+extern int ipv6_route_ioctl(struct net *net,
+ unsigned int cmd,
+ void __user *arg);
+
+extern int ip6_route_add(struct fib6_config *cfg);
+extern int ip6_ins_rt(struct rt6_info *);
+extern int ip6_del_rt(struct rt6_info *);
+
+extern int ip6_route_get_saddr(struct net *net,
+ struct rt6_info *rt,
+ const struct in6_addr *daddr,
+ unsigned int prefs,
+ struct in6_addr *saddr);
+
+extern struct rt6_info *rt6_lookup(struct net *net,
+ const struct in6_addr *daddr,
+ const struct in6_addr *saddr,
+ int oif, int flags);
+
+extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
+ struct neighbour *neigh,
+ struct flowi6 *fl6);
+extern int icmp6_dst_gc(void);
+
+extern void fib6_force_start_gc(struct net *net);
+
+extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
+ const struct in6_addr *addr,
+ bool anycast);
+
+extern int ip6_dst_hoplimit(struct dst_entry *dst);
+
+/*
+ * support functions for ND
+ *
+ */
+extern struct rt6_info * rt6_get_dflt_router(const struct in6_addr *addr,
+ struct net_device *dev);
+extern struct rt6_info * rt6_add_dflt_router(const struct in6_addr *gwaddr,
+ struct net_device *dev,
+ unsigned int pref);
+
+extern void rt6_purge_dflt_routers(struct net *net);
+
+extern int rt6_route_rcv(struct net_device *dev,
+ u8 *opt, int len,
+ const struct in6_addr *gwaddr);
+
+extern void rt6_redirect(const struct in6_addr *dest,
+ const struct in6_addr *src,
+ const struct in6_addr *saddr,
+ struct neighbour *neigh,
+ u8 *lladdr,
+ int on_link);
+
+extern void rt6_pmtu_discovery(const struct in6_addr *daddr,
+ const struct in6_addr *saddr,
+ struct net_device *dev,
+ u32 pmtu);
+
+struct netlink_callback;
+
+struct rt6_rtnl_dump_arg {
+ struct sk_buff *skb;
+ struct netlink_callback *cb;
+ struct net *net;
+};
+
+extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
+extern void rt6_ifdown(struct net *net, struct net_device *dev);
+extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
+extern void rt6_remove_prefsrc(struct inet6_ifaddr *ifp);
+
+
+/*
+ * Store a destination cache entry in a socket
+ */
+static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
+ struct in6_addr *daddr, struct in6_addr *saddr)
+{
+ struct ipv6_pinfo *np = inet6_sk(sk);
+ struct rt6_info *rt = (struct rt6_info *) dst;
+
+ sk_setup_caps(sk, dst);
+ np->daddr_cache = daddr;
+#ifdef CONFIG_IPV6_SUBTREES
+ np->saddr_cache = saddr;
+#endif
+ np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
+}
+
+static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
+ struct in6_addr *daddr, struct in6_addr *saddr)
+{
+ spin_lock(&sk->sk_dst_lock);
+ __ip6_dst_store(sk, dst, daddr, saddr);
+ spin_unlock(&sk->sk_dst_lock);
+}
+
+static inline int ipv6_unicast_destination(struct sk_buff *skb)
+{
+ struct rt6_info *rt = (struct rt6_info *) skb_dst(skb);
+
+ return rt->rt6i_flags & RTF_LOCAL;
+}
+
+int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *));
+
+static inline int ip6_skb_dst_mtu(struct sk_buff *skb)
+{
+ struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL;
+
+ return (np && np->pmtudisc == IPV6_PMTUDISC_PROBE) ?
+ skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb));
+}
+
+#endif