Import of Linux/MIPS 2.1.14

1 files changed, 296 insertions, 0 deletions

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
new file mode 100644
index 000000000..5b1042927
--- /dev/null
+++ b/include/net/ipv6.h
@@ -0,0 +1,296 @@
+/*
+ *	Linux INET6 implementation
+ *
+ *	Authors:
+ *	Pedro Roque		<roque@di.fc.ul.pt>
+ *
+ *	$Id: ipv6.h,v 1.19 1996/09/24 17:04:20 roque Exp $
+ *
+ *	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_IPV6_H
+#define _NET_IPV6_H
+
+#include <linux/ipv6.h>
+#include <net/ndisc.h>
+
+/*
+ *	NextHeader field of IPv6 header
+ */
+
+#define NEXTHDR_HOP		0	/* Hop-by-hop option header. */
+#define NEXTHDR_TCP		6	/* TCP segment. */
+#define NEXTHDR_UDP		17	/* UDP message. */
+#define NEXTHDR_IPV6		41	/* IPv6 in IPv6 */
+#define NEXTHDR_ROUTING		43	/* Routing header. */
+#define NEXTHDR_FRAGMENT	44	/* Fragmentation/reassembly header. */
+#define NEXTHDR_ESP		50	/* Encapsulating security payload. */
+#define NEXTHDR_AUTH		51	/* Authentication header. */
+#define NEXTHDR_ICMP		58	/* ICMP for IPv6. */
+#define NEXTHDR_NONE		59	/* No next header */
+#define NEXTHDR_DEST		60	/* Destination options header. */
+
+#define NEXTHDR_MAX		255
+
+
+
+#define IPV6_DEFAULT_HOPLIMIT   64
+#define IPV6_DEFAULT_MCASTHOPS	1
+
+/*
+ *	Addr type
+ *	
+ *	type	-	unicast | multicast | anycast
+ *	scope	-	local	| site	    | global
+ *	v4	-	compat
+ *	v4mapped
+ *	any
+ *	loopback
+ */
+
+#define IPV6_ADDR_ANY		0x0000U
+
+#define IPV6_ADDR_UNICAST      	0x0001U	
+#define IPV6_ADDR_MULTICAST    	0x0002U	
+#define IPV6_ADDR_ANYCAST	0x0004U
+
+#define IPV6_ADDR_LOOPBACK	0x0010U
+#define IPV6_ADDR_LINKLOCAL	0x0020U
+#define IPV6_ADDR_SITELOCAL	0x0040U
+
+#define IPV6_ADDR_COMPATv4	0x0080U
+
+#define IPV6_ADDR_SCOPE_MASK	0x00f0U
+
+#define IPV6_ADDR_MAPPED	0x1000U
+#define IPV6_ADDR_RESERVED	0x2000U	/* reserved address space */
+
+/*
+ *	fragmentation header
+ */
+
+struct frag_hdr {
+	unsigned char	nexthdr;
+	unsigned char	reserved;	
+	unsigned short	frag_off;
+	__u32		identification;
+};
+
+#ifdef __KERNEL__
+
+#include <net/sock.h>
+
+extern struct ipv6_mib	ipv6_statistics;
+
+extern int		ipv6_forwarding;	/* host/router switch */
+extern int		ipv6_hop_limit;		/* default hop limit */
+
+struct ipv6_frag {
+	__u16			offset;
+	__u16			len;
+	struct sk_buff		*skb;
+
+	struct frag_hdr		*fhdr;
+
+	struct ipv6_frag	*next;
+};
+
+/*
+ *	Equivalent of ipv4 struct ipq
+ */
+
+struct frag_queue {
+
+	struct frag_queue	*next;
+	struct frag_queue	*prev;
+
+	__u32			id;		/* fragment id		*/
+	struct timer_list	timer;		/* expire timer		*/
+	struct ipv6_frag	*fragments;
+	struct device		*dev;
+	__u8			last_in;	/* has last segment arrived? */
+	__u8			nexthdr;
+	__u8			*nhptr;
+};
+
+extern int			ipv6_routing_header(struct sk_buff **skb, 
+						    struct device *dev,
+						    __u8 *nhptr, 
+						    struct ipv6_options *opt);
+
+extern int			ipv6_reassembly(struct sk_buff **skb, 
+						struct device *dev, 
+						__u8 *nhptr,
+						struct ipv6_options *opt);
+
+#define IPV6_FRAG_TIMEOUT	(60*HZ)		/* 60 seconds */
+
+/*
+ *	Function prototype for build_xmit
+ */
+
+typedef int		(*inet_getfrag_t) (const void *data,
+					   struct in6_addr *addr,
+					   char *,
+					   unsigned int, unsigned int);
+
+
+extern int		ipv6_addr_type(struct in6_addr *addr);
+
+extern __inline__ int ipv6_addr_cmp(struct in6_addr *a1, struct in6_addr *a2)
+{
+	return memcmp((void *) a1, (void *) a2, sizeof(struct in6_addr));
+}
+
+extern __inline__ void ipv6_addr_copy(struct in6_addr *a1, struct in6_addr *a2)
+{
+	memcpy((void *) a1, (void *) a2, sizeof(struct in6_addr));
+}
+
+#ifndef __HAVE_ARCH_ADDR_SET
+extern __inline__ void ipv6_addr_set(struct in6_addr *addr, 
+				     __u32 w1, __u32 w2,
+				     __u32 w3, __u32 w4)
+{
+	addr->s6_addr32[0] = w1;
+	addr->s6_addr32[1] = w2;
+	addr->s6_addr32[2] = w3;
+	addr->s6_addr32[3] = w4;
+}
+#endif
+
+extern __inline__ int ipv6_addr_any(struct in6_addr *a)
+{
+	return ((a->s6_addr32[0] | a->s6_addr32[1] | 
+		 a->s6_addr32[2] | a->s6_addr32[3] ) == 0); 
+}
+
+/*
+ *	Prototypes exported by ipv6
+ */
+
+#if 0
+extern int			ipv6_build_header(struct sk_buff *skb,
+						  struct device *dev,
+						  struct in6_addr *saddr_in, 
+						  struct in6_addr *daddr_in,
+						  int proto, int len, 
+						  struct ipv6_pinfo *np);
+#endif
+
+extern void			ipv6_redo_mac_hdr(struct sk_buff *skb,
+						  struct neighbour *neigh,
+						  int len);
+
+extern int			ipv6_bld_hdr_2(struct sock *sk,
+					       struct sk_buff *skb,
+					       struct device *dev,
+					       struct neighbour *neigh,
+					       struct in6_addr *saddr,
+					       struct in6_addr *daddr,
+					       int proto, int len);
+
+extern int			ipv6_xmit(struct sock *sk,
+					  struct sk_buff *skb,
+					  struct in6_addr *saddr,
+					  struct in6_addr *daddr,
+					  struct ipv6_options *opt,
+					  int proto);
+
+extern void			ipv6_queue_xmit(struct sock *sk,
+						struct device *dev,
+						struct sk_buff *skb,
+						int free);
+
+extern int			ipv6_build_xmit(struct sock *sk,
+						inet_getfrag_t getfrag,
+						const void * data,
+						struct in6_addr * daddr,
+						unsigned short int length,
+						struct in6_addr * saddr,
+						struct device *dev,
+						struct ipv6_options *opt,
+						int proto, int noblock);
+
+/*
+ *	rcv function (called from netdevice level)
+ */
+
+extern int			ipv6_rcv(struct sk_buff *skb, 
+					 struct device *dev, 
+					 struct packet_type *pt);
+
+extern void			ipv6_forward(struct sk_buff *skb,
+					     struct device *dev,
+					     int flags);
+
+#define IP6_FW_SRCRT	0x1
+#define	IP6_FW_STRICT	0x2
+
+/*
+ *	Extension header (options) processing
+ */
+extern int			ipv6opt_bld_rthdr(struct sk_buff *skb,
+						  struct ipv6_options *opt,
+						  struct in6_addr *addr,
+						  int proto);
+
+extern int			ipv6opt_srcrt_co(struct sockaddr_in6 *sin6, 
+						 int len, 
+						 struct ipv6_options *opt);
+
+extern int			ipv6opt_srcrt_cl(struct sockaddr_in6 *sin6, 
+						 int num_addrs, 
+						 struct ipv6_options *opt);
+
+extern int			ipv6opt_srt_tosin(struct ipv6_options *opt,
+						  struct sockaddr_in6 *sin6,
+						  int len);
+
+extern void			ipv6opt_free(struct ipv6_options *opt);
+
+
+/*
+ *	socket lookup (af_inet6.c)
+ */
+
+extern struct sock *		inet6_get_sock(struct proto *prot, 
+					       struct in6_addr *loc_addr, 
+					       struct in6_addr *rmt_addr,
+					       unsigned short loc_port,
+					       unsigned short rmt_port);
+
+extern struct sock *		inet6_get_sock_raw(struct sock *sk, 
+						   unsigned short num,
+						   struct in6_addr *loc_addr, 
+						   struct in6_addr *rmt_addr);
+
+extern struct sock *		inet6_get_sock_mcast(struct sock *sk, 
+						     unsigned short num,
+						     unsigned short rmt_port,
+						     struct in6_addr *loc_addr, 
+						     struct in6_addr *rmt_addr);
+
+/*
+ *	socket options (ipv6_sockglue.c)
+ */
+
+extern int			ipv6_setsockopt(struct sock *sk, int level, 
+						int optname, char *optval, 
+						int optlen);
+extern int			ipv6_getsockopt(struct sock *sk, int level, 
+						int optname, char *optval, 
+						int *optlen);
+
+
+extern void			ipv6_init(void);
+extern void			ipv6_cleanup(void);
+#endif
+#endif
+
+
+