patch-2.1.15 linux/include/net/ip_fib.h

• Lines: 134
• Date: Thu Dec 12 16:54:21 1996
• Orig file: v2.1.14/linux/include/net/ip_fib.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.14/linux/include/net/ip_fib.h linux/include/net/ip_fib.h
@@ -0,0 +1,133 @@
+/*
+ * 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
+
+
+struct fib_node
+{
+	struct fib_node		*fib_next;
+	u32			fib_key;
+	struct fib_info		*fib_info;
+	short			fib_metric;
+	u8			fib_tos;
+	u8			fib_flag;
+};
+
+#define FIBFLG_DOWN		1	/* Ignore this node	*/
+#define FIBFLG_THROW		2	/* Class lookup failed	*/
+#define FIBFLG_REJECT		4	/* Route lookup failed	*/
+
+#define MAGIC_METRIC		0x7FFF
+
+/*
+ * This structure contains data shared by many of routes.
+ */	
+
+struct fib_info
+{
+	struct fib_info		*fib_next;
+	struct fib_info		*fib_prev;
+	u32			fib_gateway;
+	struct device		*fib_dev;
+	int			fib_refcnt;
+	unsigned long		fib_window;
+	unsigned		fib_flags;
+	unsigned short		fib_mtu;
+	unsigned short		fib_irtt;
+};
+
+struct fib_zone
+{
+	struct fib_zone	*fz_next;
+	struct fib_node	**fz_hash;
+	int		fz_nent;
+	int		fz_divisor;
+	u32		fz_hashmask;
+	int		fz_logmask;
+	u32		fz_mask;
+};
+
+struct fib_class
+{
+	unsigned char	cl_id;
+	unsigned char	cl_auto;
+	struct fib_zone	*fib_zones[33];
+	struct fib_zone	*fib_zone_list;
+	int		cl_users;
+};
+
+struct fib_rule
+{
+	struct fib_rule *cl_next;
+	struct fib_class *cl_class;
+	u32		cl_src;
+	u32		cl_srcmask;
+	u32		cl_dst;
+	u32		cl_dstmask;
+	u32		cl_srcmap;
+	u8		cl_action;
+	u8		cl_flags;
+	u8		cl_tos;
+	u8		cl_preference;
+	struct device	*cl_dev;
+};
+
+struct fib_result
+{
+	struct fib_node *f;
+	struct fib_rule *fr;
+	int		 fm;
+};
+
+void ip_fib_init(void);
+unsigned ip_fib_chk_addr(u32 addr);
+int ip_fib_chk_default_gw(u32 addr, struct device*);
+
+int fib_lookup(struct fib_result *, u32 daddr, u32 src, u8 tos, struct device *devin,
+	       struct device *devout);
+
+static __inline__ struct fib_info *
+fib_lookup_info(u32 dst, u32 src, u8 tos, struct device *devin,
+		struct device *devout)
+{
+	struct fib_result res;
+	if (fib_lookup(&res, dst, src, tos, devin, devout) < 0)
+		return NULL;
+	return res.f->fib_info;
+}
+
+static __inline__ struct device * get_gw_dev(u32 gw, struct device *dev)
+{
+	struct fib_info * fi;
+
+	fi = fib_lookup_info(gw, 0, 1, &loopback_dev, dev);
+	if (fi)
+		return fi->fib_dev;
+	return NULL;
+}
+
+extern int		ip_rt_event(int event, struct device *dev);
+extern int		ip_rt_ioctl(unsigned int cmd, void *arg);
+extern void		ip_rt_change_broadcast(struct device *, u32);
+extern void		ip_rt_change_dstaddr(struct device *, u32);
+extern void		ip_rt_change_netmask(struct device *, u32);
+extern void		ip_rt_multicast_event(struct device *dev);
+
+extern struct device *	ip_dev_find_tunnel(u32 daddr, u32 saddr);
+
+
+#endif  _NET_FIB_H