Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 153 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/net/route.h b/pfinet/linux-src/include/net/route.h
new file mode 100644
index 00000000..66df4712
--- /dev/null
+++ b/pfinet/linux-src/include/net/route.h
@@ -0,0 +1,153 @@
+/*
+ * 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 IP router.
+ *
+ * Version:	@(#)route.h	1.0.4	05/27/93
+ *
+ * Authors:	Ross Biro, <bir7@leland.Stanford.Edu>
+ *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ * Fixes:
+ *		Alan Cox	:	Reformatted. Added ip_rt_local()
+ *		Alan Cox	:	Support for TCP parameters.
+ *		Alexey Kuznetsov:	Major changes for new routing code.
+ *		Mike McLagan    :	Routing by source
+ *
+ *		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 _ROUTE_H
+#define _ROUTE_H
+
+#include <linux/config.h>
+#include <net/dst.h>
+#include <linux/in_route.h>
+#include <linux/rtnetlink.h>
+#include <linux/route.h>
+
+#ifndef __KERNEL__
+#warning This file is not supposed to be used outside of kernel.
+#endif
+
+#define RT_HASH_DIVISOR	    	256
+
+/*
+ * Prevents LRU trashing, entries considered equivalent,
+ * if the difference between last use times is less then this number.
+ */
+#define RT_CACHE_BUBBLE_THRESHOLD	(5*HZ)
+
+
+#define RTO_ONLINK	0x01
+#define RTO_TPROXY	0x80000000
+
+#ifdef CONFIG_IP_TRANSPARENT_PROXY
+#define RTO_CONN	RTO_TPROXY
+#else
+#define RTO_CONN	0
+#endif
+
+struct rt_key
+{
+	__u32			dst;
+	__u32			src;
+	int			iif;
+	int			oif;
+#ifdef CONFIG_IP_ROUTE_FWMARK
+	__u32			fwmark;
+#endif
+	__u8			tos;
+	__u8			scope;
+};
+
+struct rtable
+{
+	union
+	{
+		struct dst_entry	dst;
+		struct rtable		*rt_next;
+	} u;
+
+	unsigned		rt_flags;
+	unsigned		rt_type;
+
+	__u32			rt_dst;	/* Path destination	*/
+	__u32			rt_src;	/* Path source		*/
+	int			rt_iif;
+
+	/* Info on neighbour */
+	__u32			rt_gateway;
+
+	/* Cache lookup keys */
+	struct rt_key		key;
+
+	/* Miscellaneous cached information */
+	__u32			rt_spec_dst; /* RFC1122 specific destination */
+
+#ifdef CONFIG_IP_ROUTE_NAT
+	__u32			rt_src_map;
+	__u32			rt_dst_map;
+#endif
+};
+
+extern struct rtable 	*rt_hash_table[RT_HASH_DIVISOR];
+
+struct ip_rt_acct
+{
+	__u32 	o_bytes;
+	__u32 	o_packets;
+	__u32 	i_bytes;
+	__u32 	i_packets;
+};
+
+extern struct ip_rt_acct ip_rt_acct[256];
+
+extern void		ip_rt_init(void);
+extern void		ip_rt_redirect(u32 old_gw, u32 dst, u32 new_gw,
+				       u32 src, u8 tos, struct device *dev);
+extern void		ip_rt_advice(struct rtable **rp, int advice);
+extern void		rt_cache_flush(int how);
+extern int		ip_route_output(struct rtable **, u32 dst, u32 src, u32 tos, int oif);
+extern int		ip_route_input(struct sk_buff*, u32 dst, u32 src, u8 tos, struct device *devin);
+extern unsigned short	ip_rt_frag_needed(struct iphdr *iph, unsigned short new_mtu);
+extern void		ip_rt_update_pmtu(struct dst_entry *dst, unsigned mtu);
+extern void		ip_rt_send_redirect(struct sk_buff *skb);
+
+extern unsigned		inet_addr_type(u32 addr);
+extern void		ip_rt_multicast_event(struct in_device *);
+extern int		ip_rt_ioctl(unsigned int cmd, void *arg);
+extern void		ip_rt_get_source(u8 *src, struct rtable *rt);
+extern int		ip_rt_dump(struct sk_buff *skb,  struct netlink_callback *cb);
+
+
+extern __inline__ void ip_rt_put(struct rtable * rt)
+{
+	if (rt)
+		dst_release(&rt->u.dst);
+}
+
+extern __u8 ip_tos2prio[16];
+
+extern __inline__ char rt_tos2priority(u8 tos)
+{
+	return ip_tos2prio[IPTOS_TOS(tos)>>1];
+}
+
+extern __inline__ int ip_route_connect(struct rtable **rp, u32 dst, u32 src, u32 tos, int oif)
+{
+	int err;
+	err = ip_route_output(rp, dst, src, tos, oif);
+	if (err || (dst && src))
+		return err;
+	dst = (*rp)->rt_dst;
+	src = (*rp)->rt_src;
+	ip_rt_put(*rp);
+	*rp = NULL;
+	return ip_route_output(rp, dst, src, tos, oif);
+}
+
+#endif	/* _ROUTE_H */