86872cb579
Replaces the struct in6_rtmsg based interface orignating from the ioctl interface with a struct fib6_config based on. Allows changing the interface without breaking the ioctl interface and avoids passing on tons of parameters. The recently introduced struct nl_info is used to pass on netlink authorship information for notifications. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
220 lines
4.6 KiB
C
220 lines
4.6 KiB
C
/*
|
|
* Linux INET6 implementation
|
|
*
|
|
* Authors:
|
|
* Pedro Roque <roque@di.fc.ul.pt>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _IP6_FIB_H
|
|
#define _IP6_FIB_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/ipv6_route.h>
|
|
#include <linux/rtnetlink.h>
|
|
#include <linux/spinlock.h>
|
|
#include <net/dst.h>
|
|
#include <net/flow.h>
|
|
#include <net/netlink.h>
|
|
|
|
struct rt6_info;
|
|
|
|
struct fib6_config
|
|
{
|
|
u32 fc_table;
|
|
u32 fc_metric;
|
|
int fc_dst_len;
|
|
int fc_src_len;
|
|
int fc_ifindex;
|
|
u32 fc_flags;
|
|
u32 fc_protocol;
|
|
|
|
struct in6_addr fc_dst;
|
|
struct in6_addr fc_src;
|
|
struct in6_addr fc_gateway;
|
|
|
|
unsigned long fc_expires;
|
|
struct nlattr *fc_mx;
|
|
int fc_mx_len;
|
|
|
|
struct nl_info fc_nlinfo;
|
|
};
|
|
|
|
struct fib6_node
|
|
{
|
|
struct fib6_node *parent;
|
|
struct fib6_node *left;
|
|
struct fib6_node *right;
|
|
|
|
struct fib6_node *subtree;
|
|
|
|
struct rt6_info *leaf;
|
|
|
|
__u16 fn_bit; /* bit key */
|
|
__u16 fn_flags;
|
|
__u32 fn_sernum;
|
|
};
|
|
|
|
|
|
/*
|
|
* routing information
|
|
*
|
|
*/
|
|
|
|
struct rt6key
|
|
{
|
|
struct in6_addr addr;
|
|
int plen;
|
|
};
|
|
|
|
struct fib6_table;
|
|
|
|
struct rt6_info
|
|
{
|
|
union {
|
|
struct dst_entry dst;
|
|
struct rt6_info *next;
|
|
} u;
|
|
|
|
struct inet6_dev *rt6i_idev;
|
|
|
|
#define rt6i_dev u.dst.dev
|
|
#define rt6i_nexthop u.dst.neighbour
|
|
#define rt6i_expires u.dst.expires
|
|
|
|
struct fib6_node *rt6i_node;
|
|
|
|
struct in6_addr rt6i_gateway;
|
|
|
|
u32 rt6i_flags;
|
|
u32 rt6i_metric;
|
|
atomic_t rt6i_ref;
|
|
struct fib6_table *rt6i_table;
|
|
|
|
struct rt6key rt6i_dst;
|
|
struct rt6key rt6i_src;
|
|
|
|
u8 rt6i_protocol;
|
|
};
|
|
|
|
struct fib6_walker_t
|
|
{
|
|
struct fib6_walker_t *prev, *next;
|
|
struct fib6_node *root, *node;
|
|
struct rt6_info *leaf;
|
|
unsigned char state;
|
|
unsigned char prune;
|
|
int (*func)(struct fib6_walker_t *);
|
|
void *args;
|
|
};
|
|
|
|
struct rt6_statistics {
|
|
__u32 fib_nodes;
|
|
__u32 fib_route_nodes;
|
|
__u32 fib_rt_alloc; /* permanent routes */
|
|
__u32 fib_rt_entries; /* rt entries in table */
|
|
__u32 fib_rt_cache; /* cache routes */
|
|
__u32 fib_discarded_routes;
|
|
};
|
|
|
|
#define RTN_TL_ROOT 0x0001
|
|
#define RTN_ROOT 0x0002 /* tree root node */
|
|
#define RTN_RTINFO 0x0004 /* node with valid routing info */
|
|
|
|
/*
|
|
* priority levels (or metrics)
|
|
*
|
|
*/
|
|
|
|
#define RTPRI_FIREWALL 8 /* Firewall control information */
|
|
#define RTPRI_FLOW 16 /* Flow based forwarding rules */
|
|
#define RTPRI_KERN_CTL 32 /* Kernel control routes */
|
|
|
|
#define RTPRI_USER_MIN 256 /* Mimimum user priority */
|
|
#define RTPRI_USER_MAX 1024 /* Maximum user priority */
|
|
|
|
#define RTPRI_KERN_DFLT 4096 /* Kernel default routes */
|
|
|
|
#define MAX_FLOW_BACKTRACE 32
|
|
|
|
|
|
typedef void (*f_pnode)(struct fib6_node *fn, void *);
|
|
|
|
struct fib6_table {
|
|
struct hlist_node tb6_hlist;
|
|
u32 tb6_id;
|
|
rwlock_t tb6_lock;
|
|
struct fib6_node tb6_root;
|
|
};
|
|
|
|
#define RT6_TABLE_UNSPEC RT_TABLE_UNSPEC
|
|
#define RT6_TABLE_MAIN RT_TABLE_MAIN
|
|
#define RT6_TABLE_DFLT RT6_TABLE_MAIN
|
|
#define RT6_TABLE_INFO RT6_TABLE_MAIN
|
|
#define RT6_TABLE_PREFIX RT6_TABLE_MAIN
|
|
|
|
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
|
|
#define FIB6_TABLE_MIN 1
|
|
#define FIB6_TABLE_MAX RT_TABLE_MAX
|
|
#define RT6_TABLE_LOCAL RT_TABLE_LOCAL
|
|
#else
|
|
#define FIB6_TABLE_MIN RT_TABLE_MAIN
|
|
#define FIB6_TABLE_MAX FIB6_TABLE_MIN
|
|
#define RT6_TABLE_LOCAL RT6_TABLE_MAIN
|
|
#endif
|
|
|
|
#define RT6_F_STRICT 1
|
|
#define RT6_F_HAS_SADDR 2
|
|
|
|
typedef struct rt6_info *(*pol_lookup_t)(struct fib6_table *,
|
|
struct flowi *, int);
|
|
|
|
/*
|
|
* exported functions
|
|
*/
|
|
|
|
extern struct fib6_table * fib6_get_table(u32 id);
|
|
extern struct fib6_table * fib6_new_table(u32 id);
|
|
extern struct dst_entry * fib6_rule_lookup(struct flowi *fl, int flags,
|
|
pol_lookup_t lookup);
|
|
|
|
extern struct fib6_node *fib6_lookup(struct fib6_node *root,
|
|
struct in6_addr *daddr,
|
|
struct in6_addr *saddr);
|
|
|
|
struct fib6_node *fib6_locate(struct fib6_node *root,
|
|
struct in6_addr *daddr, int dst_len,
|
|
struct in6_addr *saddr, int src_len);
|
|
|
|
extern void fib6_clean_all(int (*func)(struct rt6_info *, void *arg),
|
|
int prune, void *arg);
|
|
|
|
extern int fib6_add(struct fib6_node *root,
|
|
struct rt6_info *rt,
|
|
struct nl_info *info);
|
|
|
|
extern int fib6_del(struct rt6_info *rt,
|
|
struct nl_info *info);
|
|
|
|
extern void inet6_rt_notify(int event, struct rt6_info *rt,
|
|
struct nl_info *info);
|
|
|
|
extern void fib6_run_gc(unsigned long dummy);
|
|
|
|
extern void fib6_gc_cleanup(void);
|
|
|
|
extern void fib6_init(void);
|
|
|
|
extern void fib6_rules_init(void);
|
|
extern void fib6_rules_cleanup(void);
|
|
extern int fib6_rules_dump(struct sk_buff *,
|
|
struct netlink_callback *);
|
|
|
|
#endif
|
|
#endif
|