include/net/if_inet6.h at v2.6.13

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kernel / include / net / if_inet6.h
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  1/*
  2 *	inet6 interface/address list definitions
  3 *	Linux INET6 implementation 
  4 *
  5 *	Authors:
  6 *	Pedro Roque		<roque@di.fc.ul.pt>	
  7 *
  8 *
  9 *	This program is free software; you can redistribute it and/or
 10 *      modify it under the terms of the GNU General Public License
 11 *      as published by the Free Software Foundation; either version
 12 *      2 of the License, or (at your option) any later version.
 13 */
 14
 15#ifndef _NET_IF_INET6_H
 16#define _NET_IF_INET6_H
 17
 18#include <net/snmp.h>
 19#include <linux/ipv6.h>
 20
 21/* inet6_dev.if_flags */
 22
 23#define IF_RA_OTHERCONF	0x80
 24#define IF_RA_MANAGED	0x40
 25#define IF_RA_RCVD	0x20
 26#define IF_RS_SENT	0x10
 27
 28/* prefix flags */
 29#define IF_PREFIX_ONLINK	0x01
 30#define IF_PREFIX_AUTOCONF	0x02
 31
 32#ifdef __KERNEL__
 33
 34struct inet6_ifaddr 
 35{
 36	struct in6_addr		addr;
 37	__u32			prefix_len;
 38	
 39	__u32			valid_lft;
 40	__u32			prefered_lft;
 41	unsigned long		cstamp;	/* created timestamp */
 42	unsigned long		tstamp; /* updated timestamp */
 43	atomic_t		refcnt;
 44	spinlock_t		lock;
 45
 46	__u8			probes;
 47	__u8			flags;
 48
 49	__u16			scope;
 50
 51	struct timer_list	timer;
 52
 53	struct inet6_dev	*idev;
 54	struct rt6_info		*rt;
 55
 56	struct inet6_ifaddr	*lst_next;      /* next addr in addr_lst */
 57	struct inet6_ifaddr	*if_next;       /* next addr in inet6_dev */
 58
 59#ifdef CONFIG_IPV6_PRIVACY
 60	struct inet6_ifaddr	*tmp_next;	/* next addr in tempaddr_lst */
 61	struct inet6_ifaddr	*ifpub;
 62	int			regen_count;
 63#endif
 64
 65	int			dead;
 66};
 67
 68struct ip6_sf_socklist
 69{
 70	unsigned int		sl_max;
 71	unsigned int		sl_count;
 72	struct in6_addr		sl_addr[0];
 73};
 74
 75#define IP6_SFLSIZE(count)	(sizeof(struct ip6_sf_socklist) + \
 76	(count) * sizeof(struct in6_addr))
 77
 78#define IP6_SFBLOCK	10	/* allocate this many at once */
 79
 80struct ipv6_mc_socklist
 81{
 82	struct in6_addr		addr;
 83	int			ifindex;
 84	struct ipv6_mc_socklist *next;
 85	unsigned int		sfmode;		/* MCAST_{INCLUDE,EXCLUDE} */
 86	struct ip6_sf_socklist	*sflist;
 87};
 88
 89struct ip6_sf_list
 90{
 91	struct ip6_sf_list	*sf_next;
 92	struct in6_addr		sf_addr;
 93	unsigned long		sf_count[2];	/* include/exclude counts */
 94	unsigned char		sf_gsresp;	/* include in g & s response? */
 95	unsigned char		sf_oldin;	/* change state */
 96	unsigned char		sf_crcount;	/* retrans. left to send */
 97};
 98
 99#define MAF_TIMER_RUNNING	0x01
100#define MAF_LAST_REPORTER	0x02
101#define MAF_LOADED		0x04
102#define MAF_NOREPORT		0x08
103#define MAF_GSQUERY		0x10
104
105struct ifmcaddr6
106{
107	struct in6_addr		mca_addr;
108	struct inet6_dev	*idev;
109	struct ifmcaddr6	*next;
110	struct ip6_sf_list	*mca_sources;
111	struct ip6_sf_list	*mca_tomb;
112	unsigned int		mca_sfmode;
113	unsigned long		mca_sfcount[2];
114	struct timer_list	mca_timer;
115	unsigned		mca_flags;
116	int			mca_users;
117	atomic_t		mca_refcnt;
118	spinlock_t		mca_lock;
119	unsigned char		mca_crcount;
120	unsigned long		mca_cstamp;
121	unsigned long		mca_tstamp;
122};
123
124/* Anycast stuff */
125
126struct ipv6_ac_socklist
127{
128	struct in6_addr		acl_addr;
129	int			acl_ifindex;
130	struct ipv6_ac_socklist *acl_next;
131};
132
133struct ifacaddr6
134{
135	struct in6_addr		aca_addr;
136	struct inet6_dev	*aca_idev;
137	struct rt6_info		*aca_rt;
138	struct ifacaddr6	*aca_next;
139	int			aca_users;
140	atomic_t		aca_refcnt;
141	spinlock_t		aca_lock;
142	unsigned long		aca_cstamp;
143	unsigned long		aca_tstamp;
144};
145
146#define	IFA_HOST	IPV6_ADDR_LOOPBACK
147#define	IFA_LINK	IPV6_ADDR_LINKLOCAL
148#define	IFA_SITE	IPV6_ADDR_SITELOCAL
149#define	IFA_GLOBAL	0x0000U
150
151struct ipv6_devstat {
152	struct proc_dir_entry	*proc_dir_entry;
153	DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6);
154};
155
156struct inet6_dev 
157{
158	struct net_device		*dev;
159
160	struct inet6_ifaddr	*addr_list;
161
162	struct ifmcaddr6	*mc_list;
163	struct ifmcaddr6	*mc_tomb;
164	rwlock_t		mc_lock;
165	unsigned long		mc_v1_seen;
166	unsigned long		mc_maxdelay;
167	unsigned char		mc_qrv;
168	unsigned char		mc_gq_running;
169	unsigned char		mc_ifc_count;
170	struct timer_list	mc_gq_timer;	/* general query timer */
171	struct timer_list	mc_ifc_timer;	/* interface change timer */
172
173	struct ifacaddr6	*ac_list;
174	rwlock_t		lock;
175	atomic_t		refcnt;
176	__u32			if_flags;
177	int			dead;
178
179#ifdef CONFIG_IPV6_PRIVACY
180	u8			rndid[8];
181	u8			entropy[8];
182	struct timer_list	regen_timer;
183	struct inet6_ifaddr	*tempaddr_list;
184	__u8			work_eui64[8];
185	__u8			work_digest[16];
186#endif
187
188	struct neigh_parms	*nd_parms;
189	struct inet6_dev	*next;
190	struct ipv6_devconf	cnf;
191	struct ipv6_devstat	stats;
192	unsigned long		tstamp; /* ipv6InterfaceTable update timestamp */
193};
194
195extern struct ipv6_devconf ipv6_devconf;
196
197static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf)
198{
199	/*
200	 *	+-------+-------+-------+-------+-------+-------+
201	 *      |   33  |   33  | DST13 | DST14 | DST15 | DST16 |
202	 *      +-------+-------+-------+-------+-------+-------+
203	 */
204
205	buf[0]= 0x33;
206	buf[1]= 0x33;
207
208	memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
209}
210
211static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf)
212{
213	/* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */
214
215	if (((addr->s6_addr[0] == 0xFF) &&
216	    ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) &&
217	     (addr->s6_addr16[1] == 0) &&
218	     (addr->s6_addr32[1] == 0) &&
219	     (addr->s6_addr32[2] == 0) &&
220	     (addr->s6_addr16[6] == 0) &&
221	     (addr->s6_addr[15] == 1)) ||
222	    ((addr->s6_addr[0] == 0xFF) &&
223	     (addr->s6_addr[1] == 0x02) &&
224	     (addr->s6_addr16[1] == 0) &&
225	     (addr->s6_addr32[1] == 0) &&
226	     (addr->s6_addr16[4] == 0) &&
227	     (addr->s6_addr[10] == 0) &&
228	     (addr->s6_addr[11] == 1) &&
229	     (addr->s6_addr[12] == 0xff)))
230	{
231		buf[0]=0xC0;
232		buf[1]=0x00;
233		buf[2]=0x01;
234		buf[3]=0x00;
235		buf[4]=0x00;
236		buf[5]=0x00;
237	/* All routers FF0x::2 */
238	} else if ((addr->s6_addr[0] ==0xff) &&
239		((addr->s6_addr[1] & 0xF0) == 0) &&
240		(addr->s6_addr16[1] == 0) &&
241		(addr->s6_addr32[1] == 0) &&
242		(addr->s6_addr32[2] == 0) &&
243		(addr->s6_addr16[6] == 0) &&
244		(addr->s6_addr[15] == 2))
245	{
246		buf[0]=0xC0;
247		buf[1]=0x00;
248		buf[2]=0x02;
249		buf[3]=0x00;
250		buf[4]=0x00;
251		buf[5]=0x00;
252	} else {
253		unsigned char i ; 
254		
255		i = addr->s6_addr[15] & 7 ; 
256		buf[0]=0xC0;
257		buf[1]=0x00;
258		buf[2]=0x00;
259		buf[3]=0x01 << i ; 
260		buf[4]=0x00;
261		buf[5]=0x00;
262	}
263}
264
265static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
266{
267	buf[0] = 0x00;
268}
269
270static inline void ipv6_ib_mc_map(struct in6_addr *addr, char *buf)
271{
272	buf[0]  = 0;		/* Reserved */
273	buf[1]  = 0xff;		/* Multicast QPN */
274	buf[2]  = 0xff;
275	buf[3]  = 0xff;
276	buf[4]  = 0xff;
277	buf[5]  = 0x12;		/* link local scope */
278	buf[6]  = 0x60;		/* IPv6 signature */
279	buf[7]  = 0x1b;
280	buf[8]  = 0;		/* P_Key */
281	buf[9]  = 0;
282	memcpy(buf + 10, addr->s6_addr + 6, 10);
283}
284#endif
285#endif
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