sctp: remove useless arguments from get_saddr() call
[linux-2.6.git] / include / net / if_inet6.h
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 #define IF_READY        0x80000000
28
29 /* prefix flags */
30 #define IF_PREFIX_ONLINK        0x01
31 #define IF_PREFIX_AUTOCONF      0x02
32
33 enum {
34         INET6_IFADDR_STATE_DAD,
35         INET6_IFADDR_STATE_POSTDAD,
36         INET6_IFADDR_STATE_UP,
37         INET6_IFADDR_STATE_DEAD,
38 };
39
40 struct inet6_ifaddr {
41         struct in6_addr         addr;
42         __u32                   prefix_len;
43         
44         __u32                   valid_lft;
45         __u32                   prefered_lft;
46         atomic_t                refcnt;
47         spinlock_t              lock;
48         spinlock_t              state_lock;
49
50         int                     state;
51
52         __u8                    probes;
53         __u8                    flags;
54
55         __u16                   scope;
56
57         unsigned long           cstamp; /* created timestamp */
58         unsigned long           tstamp; /* updated timestamp */
59
60         struct timer_list       timer;
61
62         struct inet6_dev        *idev;
63         struct rt6_info         *rt;
64
65         struct hlist_node       addr_lst;
66         struct list_head        if_list;
67
68 #ifdef CONFIG_IPV6_PRIVACY
69         struct list_head        tmp_list;
70         struct inet6_ifaddr     *ifpub;
71         int                     regen_count;
72 #endif
73         struct rcu_head         rcu;
74 };
75
76 struct ip6_sf_socklist {
77         unsigned int            sl_max;
78         unsigned int            sl_count;
79         struct in6_addr         sl_addr[0];
80 };
81
82 #define IP6_SFLSIZE(count)      (sizeof(struct ip6_sf_socklist) + \
83         (count) * sizeof(struct in6_addr))
84
85 #define IP6_SFBLOCK     10      /* allocate this many at once */
86
87 struct ipv6_mc_socklist {
88         struct in6_addr         addr;
89         int                     ifindex;
90         struct ipv6_mc_socklist __rcu *next;
91         rwlock_t                sflock;
92         unsigned int            sfmode;         /* MCAST_{INCLUDE,EXCLUDE} */
93         struct ip6_sf_socklist  *sflist;
94         struct rcu_head         rcu;
95 };
96
97 struct ip6_sf_list {
98         struct ip6_sf_list      *sf_next;
99         struct in6_addr         sf_addr;
100         unsigned long           sf_count[2];    /* include/exclude counts */
101         unsigned char           sf_gsresp;      /* include in g & s response? */
102         unsigned char           sf_oldin;       /* change state */
103         unsigned char           sf_crcount;     /* retrans. left to send */
104 };
105
106 #define MAF_TIMER_RUNNING       0x01
107 #define MAF_LAST_REPORTER       0x02
108 #define MAF_LOADED              0x04
109 #define MAF_NOREPORT            0x08
110 #define MAF_GSQUERY             0x10
111
112 struct ifmcaddr6 {
113         struct in6_addr         mca_addr;
114         struct inet6_dev        *idev;
115         struct ifmcaddr6        *next;
116         struct ip6_sf_list      *mca_sources;
117         struct ip6_sf_list      *mca_tomb;
118         unsigned int            mca_sfmode;
119         unsigned char           mca_crcount;
120         unsigned long           mca_sfcount[2];
121         struct timer_list       mca_timer;
122         unsigned                mca_flags;
123         int                     mca_users;
124         atomic_t                mca_refcnt;
125         spinlock_t              mca_lock;
126         unsigned long           mca_cstamp;
127         unsigned long           mca_tstamp;
128 };
129
130 /* Anycast stuff */
131
132 struct ipv6_ac_socklist {
133         struct in6_addr         acl_addr;
134         int                     acl_ifindex;
135         struct ipv6_ac_socklist *acl_next;
136 };
137
138 struct ifacaddr6 {
139         struct in6_addr         aca_addr;
140         struct inet6_dev        *aca_idev;
141         struct rt6_info         *aca_rt;
142         struct ifacaddr6        *aca_next;
143         int                     aca_users;
144         atomic_t                aca_refcnt;
145         spinlock_t              aca_lock;
146         unsigned long           aca_cstamp;
147         unsigned long           aca_tstamp;
148 };
149
150 #define IFA_HOST        IPV6_ADDR_LOOPBACK
151 #define IFA_LINK        IPV6_ADDR_LINKLOCAL
152 #define IFA_SITE        IPV6_ADDR_SITELOCAL
153
154 struct ipv6_devstat {
155         struct proc_dir_entry   *proc_dir_entry;
156         DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
157         DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6);
158         DEFINE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg);
159 };
160
161 struct inet6_dev {
162         struct net_device       *dev;
163
164         struct list_head        addr_list;
165
166         struct ifmcaddr6        *mc_list;
167         struct ifmcaddr6        *mc_tomb;
168         spinlock_t              mc_lock;
169         unsigned char           mc_qrv;
170         unsigned char           mc_gq_running;
171         unsigned char           mc_ifc_count;
172         unsigned long           mc_v1_seen;
173         unsigned long           mc_maxdelay;
174         struct timer_list       mc_gq_timer;    /* general query timer */
175         struct timer_list       mc_ifc_timer;   /* interface change timer */
176
177         struct ifacaddr6        *ac_list;
178         rwlock_t                lock;
179         atomic_t                refcnt;
180         __u32                   if_flags;
181         int                     dead;
182
183 #ifdef CONFIG_IPV6_PRIVACY
184         u8                      rndid[8];
185         struct timer_list       regen_timer;
186         struct list_head        tempaddr_list;
187 #endif
188
189         struct neigh_parms      *nd_parms;
190         struct inet6_dev        *next;
191         struct ipv6_devconf     cnf;
192         struct ipv6_devstat     stats;
193         unsigned long           tstamp; /* ipv6InterfaceTable update timestamp */
194         struct rcu_head         rcu;
195 };
196
197 static inline void ipv6_eth_mc_map(const 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
211 static inline void ipv6_tr_mc_map(const 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
265 static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
266 {
267         buf[0] = 0x00;
268 }
269
270 static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
271                                   const unsigned char *broadcast, char *buf)
272 {
273         unsigned char scope = broadcast[5] & 0xF;
274
275         buf[0]  = 0;            /* Reserved */
276         buf[1]  = 0xff;         /* Multicast QPN */
277         buf[2]  = 0xff;
278         buf[3]  = 0xff;
279         buf[4]  = 0xff;
280         buf[5]  = 0x10 | scope; /* scope from broadcast address */
281         buf[6]  = 0x60;         /* IPv6 signature */
282         buf[7]  = 0x1b;
283         buf[8]  = broadcast[8]; /* P_Key */
284         buf[9]  = broadcast[9];
285         memcpy(buf + 10, addr->s6_addr + 6, 10);
286 }
287
288 static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
289                                     const unsigned char *broadcast, char *buf)
290 {
291         if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) {
292                 memcpy(buf, broadcast, 4);
293         } else {
294                 /* v4mapped? */
295                 if ((addr->s6_addr32[0] | addr->s6_addr32[1] |
296                      (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
297                         return -EINVAL;
298                 memcpy(buf, &addr->s6_addr32[3], 4);
299         }
300         return 0;
301 }
302
303 #endif