Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 97 insertions, 0 deletions

diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
new file mode 100644
index 00000000000..8e2f473d3e8
--- /dev/null
+++ b/include/net/fib_rules.h
@@ -0,0 +1,97 @@
+#ifndef __NET_FIB_RULES_H
+#define __NET_FIB_RULES_H
+
+#include <linux/types.h>
+#include <linux/netdevice.h>
+#include <linux/fib_rules.h>
+#include <net/flow.h>
+#include <net/netlink.h>
+
+struct fib_rule
+{
+	struct list_head	list;
+	atomic_t		refcnt;
+	int			ifindex;
+	char			ifname[IFNAMSIZ];
+	u32			pref;
+	u32			flags;
+	u32			table;
+	u8			action;
+	struct rcu_head		rcu;
+};
+
+struct fib_lookup_arg
+{
+	void			*lookup_ptr;
+	void			*result;
+	struct fib_rule		*rule;
+};
+
+struct fib_rules_ops
+{
+	int			family;
+	struct list_head	list;
+	int			rule_size;
+
+	int			(*action)(struct fib_rule *,
+					  struct flowi *, int,
+					  struct fib_lookup_arg *);
+	int			(*match)(struct fib_rule *,
+					 struct flowi *, int);
+	int			(*configure)(struct fib_rule *,
+					     struct sk_buff *,
+					     struct nlmsghdr *,
+					     struct fib_rule_hdr *,
+					     struct nlattr **);
+	int			(*compare)(struct fib_rule *,
+					   struct fib_rule_hdr *,
+					   struct nlattr **);
+	int			(*fill)(struct fib_rule *, struct sk_buff *,
+					struct nlmsghdr *,
+					struct fib_rule_hdr *);
+	u32			(*default_pref)(void);
+
+	int			nlgroup;
+	struct nla_policy	*policy;
+	struct list_head	*rules_list;
+	struct module		*owner;
+};
+
+static inline void fib_rule_get(struct fib_rule *rule)
+{
+	atomic_inc(&rule->refcnt);
+}
+
+static inline void fib_rule_put_rcu(struct rcu_head *head)
+{
+	struct fib_rule *rule = container_of(head, struct fib_rule, rcu);
+	kfree(rule);
+}
+
+static inline void fib_rule_put(struct fib_rule *rule)
+{
+	if (atomic_dec_and_test(&rule->refcnt))
+		call_rcu(&rule->rcu, fib_rule_put_rcu);
+}
+
+static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla)
+{
+	if (nla[FRA_TABLE])
+		return nla_get_u32(nla[FRA_TABLE]);
+	return frh->table;
+}
+
+extern int			fib_rules_register(struct fib_rules_ops *);
+extern int			fib_rules_unregister(struct fib_rules_ops *);
+
+extern int			fib_rules_lookup(struct fib_rules_ops *,
+						 struct flowi *, int flags,
+						 struct fib_lookup_arg *);
+
+extern int			fib_nl_newrule(struct sk_buff *,
+					       struct nlmsghdr *, void *);
+extern int			fib_nl_delrule(struct sk_buff *,
+					       struct nlmsghdr *, void *);
+extern int			fib_rules_dump(struct sk_buff *,
+					       struct netlink_callback *, int);
+#endif