Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 177 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/net/ip6_fib.h b/pfinet/linux-src/include/net/ip6_fib.h
new file mode 100644
index 00000000..efd652f2
--- /dev/null
+++ b/pfinet/linux-src/include/net/ip6_fib.h
@@ -0,0 +1,177 @@
+/*
+ *	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 <net/dst.h>
+#include <net/flow.h>
+#include <linux/rtnetlink.h>
+
+struct rt6_info;
+
+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 rt6_info
+{
+	union {
+		struct dst_entry	dst;
+		struct rt6_info		*next;
+	} u;
+
+#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;
+	u8				rt6i_hoplimit;
+	atomic_t			rt6i_ref;
+
+	union {
+		struct flow_rule	*rt6iu_flowr;
+		struct flow_filter	*rt6iu_filter;
+	} flow_u;
+
+#define rt6i_flowr			flow_u.rt6iu_flowr
+#define rt6i_filter			flow_u.rt6iu_filter
+
+	struct rt6key			rt6i_dst;
+	struct rt6key			rt6i_src;
+};
+
+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;
+};
+
+extern struct fib6_walker_t fib6_walker_list;
+
+extern __inline__ void fib6_walker_link(struct fib6_walker_t *w)
+{
+	w->next = fib6_walker_list.next;
+	w->prev = &fib6_walker_list;
+	w->next->prev = w;
+	w->prev->next = w;
+}
+
+extern __inline__ void fib6_walker_unlink(struct fib6_walker_t *w)
+{
+	w->next->prev = w->prev;
+	w->prev->next = w->next;
+	w->prev = w->next = w;
+}
+
+struct rt6_statistics {
+	__u32		fib_nodes;
+	__u32		fib_route_nodes;
+	__u32		fib_rt_alloc;		/* permanet routes	*/
+	__u32		fib_rt_entries;		/* rt entries in table	*/
+	__u32		fib_rt_cache;		/* cache 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 *);
+
+extern struct fib6_node		ip6_routing_table;
+
+/*
+ *	exported functions
+ */
+
+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_tree(struct fib6_node *root,
+						int (*func)(struct rt6_info *, void *arg),
+						int prune, void *arg);
+
+extern int			fib6_walk(struct fib6_walker_t *w);
+extern int			fib6_walk_continue(struct fib6_walker_t *w);
+
+extern int			fib6_add(struct fib6_node *root,
+					 struct rt6_info *rt);
+
+extern int			fib6_del(struct rt6_info *rt);
+
+extern void			inet6_rt_notify(int event, struct rt6_info *rt);
+
+extern void			fib6_run_gc(unsigned long dummy);
+
+extern void			fib6_gc_cleanup(void);
+
+#endif
+#endif