linux-imx

/*

 * INET     An implementation of the TCP/IP protocol suite for the LINUX

 *      operating system.  INET  is implemented using the  BSD Socket

 *      interface as the means of communication with the user level.

 *

 *      Definitions for the Forwarding Information Base.

 *

 * Authors: A.N.Kuznetsov, <kuznet@ms2.inr.ac.ru>

 *

 *      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 _NET_IP_FIB_H

#define _NET_IP_FIB_H

​

#include <net/flow.h>

#include <linux/seq_file.h>

#include <linux/rcupdate.h>

#include <net/fib_notifier.h>

#include <net/fib_rules.h>

#include <net/inetpeer.h>

#include <linux/percpu.h>

#include <linux/notifier.h>

#include <linux/refcount.h>

​

struct fib_config {

    u8          fc_dst_len;

    u8          fc_tos;

    u8          fc_protocol;

    u8          fc_scope;

    u8          fc_type;

    /* 3 bytes unused */

    u32         fc_table;

    __be32          fc_dst;

    __be32          fc_gw;

    int         fc_oif;

    u32         fc_flags;

    u32         fc_priority;

    __be32          fc_prefsrc;

    struct nlattr       *fc_mx;

    struct rtnexthop    *fc_mp;

    int         fc_mx_len;

    int         fc_mp_len;

    u32         fc_flow;

    u32         fc_nlflags;

    struct nl_info      fc_nlinfo;

    struct nlattr       *fc_encap;

    u16         fc_encap_type;

};

​

struct fib_info;

struct rtable;

​

struct fib_nh_exception {

    struct fib_nh_exception __rcu   *fnhe_next;

    int             fnhe_genid;

    __be32              fnhe_daddr;

    u32             fnhe_pmtu;

    bool                fnhe_mtu_locked;

    __be32              fnhe_gw;

    unsigned long           fnhe_expires;

    struct rtable __rcu     *fnhe_rth_input;

    struct rtable __rcu     *fnhe_rth_output;

    unsigned long           fnhe_stamp;

    struct rcu_head         rcu;

};

​

struct fnhe_hash_bucket {

    struct fib_nh_exception __rcu   *chain;

};

​

#define FNHE_HASH_SHIFT     11

#define FNHE_HASH_SIZE      (1 << FNHE_HASH_SHIFT)

#define FNHE_RECLAIM_DEPTH  5

​

struct fib_nh {

    struct net_device   *nh_dev;

    struct hlist_node   nh_hash;

    struct fib_info     *nh_parent;

    unsigned int        nh_flags;

    unsigned char       nh_scope;

#ifdef CONFIG_IP_ROUTE_MULTIPATH

    int         nh_weight;

    atomic_t        nh_upper_bound;

#endif

#ifdef CONFIG_IP_ROUTE_CLASSID

    __u32           nh_tclassid;

#endif

    int         nh_oif;