Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 472 insertions, 0 deletions

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
new file mode 100644
index 000000000000..87c45cbfbaf6
--- /dev/null
+++ b/include/net/ipv6.h
@@ -0,0 +1,472 @@
+/*
+ *	Linux INET6 implementation
+ *
+ *	Authors:
+ *	Pedro Roque		<roque@di.fc.ul.pt>
+ *
+ *	$Id: ipv6.h,v 1.1 2002/05/20 15:13:07 jgrimm 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 <linux/hardirq.h>
+#include <net/ndisc.h>
+#include <net/flow.h>
+#include <net/snmp.h>
+
+#define SIN6_LEN_RFC2133	24
+
+#define IPV6_MAXPLEN		65535
+
+/*
+ *	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
+ *	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_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 */
+
+/*
+ *	Addr scopes
+ */
+#ifdef __KERNEL__
+#define IPV6_ADDR_MC_SCOPE(a)	\
+	((a)->s6_addr[1] & 0x0f)	/* nonstandard */
+#define __IPV6_ADDR_SCOPE_INVALID	-1
+#endif
+#define IPV6_ADDR_SCOPE_NODELOCAL	0x01
+#define IPV6_ADDR_SCOPE_LINKLOCAL	0x02
+#define IPV6_ADDR_SCOPE_SITELOCAL	0x05
+#define IPV6_ADDR_SCOPE_ORGLOCAL	0x08
+#define IPV6_ADDR_SCOPE_GLOBAL		0x0e
+
+/*
+ *	fragmentation header
+ */
+
+struct frag_hdr {
+	unsigned char	nexthdr;
+	unsigned char	reserved;	
+	unsigned short	frag_off;
+	__u32		identification;
+};
+
+#define	IP6_MF	0x0001
+
+#ifdef __KERNEL__
+
+#include <net/sock.h>
+
+/* sysctls */
+extern int sysctl_ipv6_bindv6only;
+extern int sysctl_mld_max_msf;
+
+/* MIBs */
+DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics);
+#define IP6_INC_STATS(field)		SNMP_INC_STATS(ipv6_statistics, field)
+#define IP6_INC_STATS_BH(field)		SNMP_INC_STATS_BH(ipv6_statistics, field)
+#define IP6_INC_STATS_USER(field) 	SNMP_INC_STATS_USER(ipv6_statistics, field)
+DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
+#define ICMP6_INC_STATS(idev, field)		({			\
+	struct inet6_dev *_idev = (idev);				\
+	if (likely(_idev != NULL))					\
+		SNMP_INC_STATS(idev->stats.icmpv6, field); 		\
+	SNMP_INC_STATS(icmpv6_statistics, field);			\
+})
+#define ICMP6_INC_STATS_BH(idev, field)		({			\
+	struct inet6_dev *_idev = (idev);				\
+	if (likely(_idev != NULL))					\
+		SNMP_INC_STATS_BH((_idev)->stats.icmpv6, field);	\
+	SNMP_INC_STATS_BH(icmpv6_statistics, field);			\
+})
+#define ICMP6_INC_STATS_USER(idev, field) 	({			\
+	struct inet6_dev *_idev = (idev);				\
+	if (likely(_idev != NULL))					\
+		SNMP_INC_STATS_USER(_idev->stats.icmpv6, field);	\
+	SNMP_INC_STATS_USER(icmpv6_statistics, field);			\
+})
+#define ICMP6_INC_STATS_OFFSET_BH(idev, field, offset)	({			\
+	struct inet6_dev *_idev = idev;						\
+	__typeof__(offset) _offset = (offset);					\
+	if (likely(_idev != NULL))						\
+		SNMP_INC_STATS_OFFSET_BH(_idev->stats.icmpv6, field, _offset);	\
+	SNMP_INC_STATS_OFFSET_BH(icmpv6_statistics, field, _offset);    	\
+})
+DECLARE_SNMP_STAT(struct udp_mib, udp_stats_in6);
+#define UDP6_INC_STATS(field)		SNMP_INC_STATS(udp_stats_in6, field)
+#define UDP6_INC_STATS_BH(field)	SNMP_INC_STATS_BH(udp_stats_in6, field)
+#define UDP6_INC_STATS_USER(field) 	SNMP_INC_STATS_USER(udp_stats_in6, field)
+extern atomic_t			inet6_sock_nr;
+
+int snmp6_register_dev(struct inet6_dev *idev);
+int snmp6_unregister_dev(struct inet6_dev *idev);
+int snmp6_alloc_dev(struct inet6_dev *idev);
+int snmp6_free_dev(struct inet6_dev *idev);
+int snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign);
+void snmp6_mib_free(void *ptr[2]);
+
+struct ip6_ra_chain
+{
+	struct ip6_ra_chain	*next;
+	struct sock		*sk;
+	int			sel;
+	void			(*destructor)(struct sock *);
+};
+
+extern struct ip6_ra_chain	*ip6_ra_chain;
+extern rwlock_t ip6_ra_lock;
+
+/*
+   This structure is prepared by protocol, when parsing
+   ancillary data and passed to IPv6.
+ */
+
+struct ipv6_txoptions
+{
+	/* Length of this structure */
+	int			tot_len;
+
+	/* length of extension headers   */
+
+	__u16			opt_flen;	/* after fragment hdr */
+	__u16			opt_nflen;	/* before fragment hdr */
+
+	struct ipv6_opt_hdr	*hopopt;
+	struct ipv6_opt_hdr	*dst0opt;
+	struct ipv6_rt_hdr	*srcrt;	/* Routing Header */
+	struct ipv6_opt_hdr	*auth;
+	struct ipv6_opt_hdr	*dst1opt;
+
+	/* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
+};
+
+struct ip6_flowlabel
+{
+	struct ip6_flowlabel	*next;
+	u32			label;
+	struct in6_addr		dst;
+	struct ipv6_txoptions	*opt;
+	atomic_t		users;
+	unsigned long		linger;
+	u8			share;
+	u32			owner;
+	unsigned long		lastuse;
+	unsigned long		expires;
+};
+
+#define IPV6_FLOWINFO_MASK	__constant_htonl(0x0FFFFFFF)
+#define IPV6_FLOWLABEL_MASK	__constant_htonl(0x000FFFFF)
+
+struct ipv6_fl_socklist
+{
+	struct ipv6_fl_socklist	*next;
+	struct ip6_flowlabel	*fl;
+};
+
+extern struct ip6_flowlabel	*fl6_sock_lookup(struct sock *sk, u32 label);
+extern struct ipv6_txoptions	*fl6_merge_options(struct ipv6_txoptions * opt_space,
+						   struct ip6_flowlabel * fl,
+						   struct ipv6_txoptions * fopt);
+extern void			fl6_free_socklist(struct sock *sk);
+extern int			ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
+extern void			ip6_flowlabel_init(void);
+extern void			ip6_flowlabel_cleanup(void);
+
+static inline void fl6_sock_release(struct ip6_flowlabel *fl)
+{
+	if (fl)
+		atomic_dec(&fl->users);
+}
+
+extern int 			ip6_ra_control(struct sock *sk, int sel,
+					       void (*destructor)(struct sock *));
+
+
+extern int			ipv6_parse_hopopts(struct sk_buff *skb, int);
+
+extern struct ipv6_txoptions *  ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
+
+extern int ip6_frag_nqueues;
+extern atomic_t ip6_frag_mem;
+
+#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(const struct in6_addr *addr);
+
+static inline int ipv6_addr_scope(const struct in6_addr *addr)
+{
+	return ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
+}
+
+static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
+{
+	return memcmp((const void *) a1, (const void *) a2, sizeof(struct in6_addr));
+}
+
+static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2)
+{
+	memcpy((void *) a1, (const void *) a2, sizeof(struct in6_addr));
+}
+
+static inline void ipv6_addr_prefix(struct in6_addr *pfx, 
+				    const struct in6_addr *addr,
+				    int plen)
+{
+	/* caller must guarantee 0 <= plen <= 128 */
+	int o = plen >> 3,
+	    b = plen & 0x7;
+
+	memcpy(pfx->s6_addr, addr, o);
+	if (b != 0) {
+		pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
+		o++;
+	}
+	if (o < 16)
+		memset(pfx->s6_addr + o, 0, 16 - o);
+}
+
+#ifndef __HAVE_ARCH_ADDR_SET
+static 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
+
+static inline int ipv6_addr_equal(const struct in6_addr *a1,
+				  const struct in6_addr *a2)
+{
+	return (a1->s6_addr32[0] == a2->s6_addr32[0] &&
+		a1->s6_addr32[1] == a2->s6_addr32[1] &&
+		a1->s6_addr32[2] == a2->s6_addr32[2] &&
+		a1->s6_addr32[3] == a2->s6_addr32[3]);
+}
+
+static inline int __ipv6_prefix_equal(const u32 *a1, const u32 *a2,
+				      unsigned int prefixlen)
+{
+	unsigned pdw, pbi;
+
+	/* check complete u32 in prefix */
+	pdw = prefixlen >> 5;
+	if (pdw && memcmp(a1, a2, pdw << 2))
+		return 0;
+
+	/* check incomplete u32 in prefix */
+	pbi = prefixlen & 0x1f;
+	if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
+		return 0;
+
+	return 1;
+}
+
+static inline int ipv6_prefix_equal(const struct in6_addr *a1,
+				    const struct in6_addr *a2,
+				    unsigned int prefixlen)
+{
+	return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32,
+				   prefixlen);
+}
+
+static inline int ipv6_addr_any(const 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
+ */
+
+/*
+ *	rcv function (called from netdevice level)
+ */
+
+extern int			ipv6_rcv(struct sk_buff *skb, 
+					 struct net_device *dev, 
+					 struct packet_type *pt);
+
+/*
+ *	upper-layer output functions
+ */
+extern int			ip6_xmit(struct sock *sk,
+					 struct sk_buff *skb,
+					 struct flowi *fl,
+					 struct ipv6_txoptions *opt,
+					 int ipfragok);
+
+extern int			ip6_nd_hdr(struct sock *sk,
+					   struct sk_buff *skb,
+					   struct net_device *dev,
+					   struct in6_addr *saddr,
+					   struct in6_addr *daddr,
+					   int proto, int len);
+
+extern int			ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
+
+extern int			ip6_append_data(struct sock *sk,
+						int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
+		    				void *from,
+						int length,
+						int transhdrlen,
+		      				int hlimit,
+						struct ipv6_txoptions *opt,
+						struct flowi *fl,
+						struct rt6_info *rt,
+						unsigned int flags);
+
+extern int			ip6_push_pending_frames(struct sock *sk);
+
+extern void			ip6_flush_pending_frames(struct sock *sk);
+
+extern int			ip6_dst_lookup(struct sock *sk,
+					       struct dst_entry **dst,
+					       struct flowi *fl);
+
+/*
+ *	skb processing functions
+ */
+
+extern int			ip6_output(struct sk_buff *skb);
+extern int			ip6_forward(struct sk_buff *skb);
+extern int			ip6_input(struct sk_buff *skb);
+extern int			ip6_mc_input(struct sk_buff *skb);
+
+/*
+ *	Extension header (options) processing
+ */
+
+extern u8 *			ipv6_build_nfrag_opts(struct sk_buff *skb,
+						      u8 *prev_hdr,
+						      struct ipv6_txoptions *opt,
+						      struct in6_addr *daddr,
+						      u32 jumbolen);
+extern u8 *			ipv6_build_frag_opts(struct sk_buff *skb,
+						     u8 *prev_hdr,
+						     struct ipv6_txoptions *opt);
+extern void 			ipv6_push_nfrag_opts(struct sk_buff *skb,
+						     struct ipv6_txoptions *opt,
+						     u8 *proto,
+						     struct in6_addr **daddr_p);
+extern void			ipv6_push_frag_opts(struct sk_buff *skb,
+						    struct ipv6_txoptions *opt,
+						    u8 *proto);
+
+extern int			ipv6_skip_exthdr(const struct sk_buff *, int start,
+					         u8 *nexthdrp, int len);
+
+extern int 			ipv6_ext_hdr(u8 nexthdr);
+
+extern struct ipv6_txoptions *	ipv6_invert_rthdr(struct sock *sk,
+						  struct ipv6_rt_hdr *hdr);
+
+
+/*
+ *	socket options (ipv6_sockglue.c)
+ */
+
+extern int			ipv6_setsockopt(struct sock *sk, int level, 
+						int optname,
+						char __user *optval, 
+						int optlen);
+extern int			ipv6_getsockopt(struct sock *sk, int level, 
+						int optname,
+						char __user *optval, 
+						int __user *optlen);
+
+extern void			ipv6_packet_init(void);
+
+extern void			ipv6_packet_cleanup(void);
+
+extern int			ip6_datagram_connect(struct sock *sk, 
+						     struct sockaddr *addr, int addr_len);
+
+extern int 			ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len);
+extern void			ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, u16 port,
+						u32 info, u8 *payload);
+extern void			ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info);
+
+extern int inet6_release(struct socket *sock);
+extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr, 
+		      int addr_len);
+extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
+			 int *uaddr_len, int peer);
+extern int inet6_ioctl(struct socket *sock, unsigned int cmd, 
+		       unsigned long arg);
+
+/*
+ * reassembly.c
+ */
+extern int sysctl_ip6frag_high_thresh;
+extern int sysctl_ip6frag_low_thresh;
+extern int sysctl_ip6frag_time;
+extern int sysctl_ip6frag_secret_interval;
+
+#endif /* __KERNEL__ */
+#endif /* _NET_IPV6_H */
+
+
+