This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / net / fib_rules.h

diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
new file mode 100644 (file)
index 0000000..d585ea9
--- /dev/null
+++ b/include/net/fib_rules.h
@@ -0,0 +1,108 @@
+#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                     mark;
+       u32                     mark_mask;
+       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                     addr_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);
+       size_t                  (*nlmsg_payload)(struct fib_rule *);
+
+       int                     nlgroup;
+       struct nla_policy       *policy;
+       struct list_head        *rules_list;
+       struct module           *owner;
+};
+
+#define FRA_GENERIC_POLICY \
+       [FRA_IFNAME]    = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
+       [FRA_PRIORITY]  = { .type = NLA_U32 }, \
+       [FRA_FWMARK]    = { .type = NLA_U32 }, \
+       [FRA_FWMASK]    = { .type = NLA_U32 }, \
+       [FRA_TABLE]     = { .type = NLA_U32 }
+
+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