diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/igmp.h |
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!
Diffstat (limited to 'include/linux/igmp.h')
-rw-r--r-- | include/linux/igmp.h | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/include/linux/igmp.h b/include/linux/igmp.h new file mode 100644 index 00000000000..390e760a96d --- /dev/null +++ b/include/linux/igmp.h | |||
@@ -0,0 +1,219 @@ | |||
1 | /* | ||
2 | * Linux NET3: Internet Group Management Protocol [IGMP] | ||
3 | * | ||
4 | * Authors: | ||
5 | * Alan Cox <Alan.Cox@linux.org> | ||
6 | * | ||
7 | * Extended to talk the BSD extended IGMP protocol of mrouted 3.6 | ||
8 | * | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or | ||
11 | * modify it under the terms of the GNU General Public License | ||
12 | * as published by the Free Software Foundation; either version | ||
13 | * 2 of the License, or (at your option) any later version. | ||
14 | */ | ||
15 | |||
16 | #ifndef _LINUX_IGMP_H | ||
17 | #define _LINUX_IGMP_H | ||
18 | |||
19 | #include <asm/byteorder.h> | ||
20 | |||
21 | /* | ||
22 | * IGMP protocol structures | ||
23 | */ | ||
24 | |||
25 | /* | ||
26 | * Header in on cable format | ||
27 | */ | ||
28 | |||
29 | struct igmphdr | ||
30 | { | ||
31 | __u8 type; | ||
32 | __u8 code; /* For newer IGMP */ | ||
33 | __u16 csum; | ||
34 | __u32 group; | ||
35 | }; | ||
36 | |||
37 | /* V3 group record types [grec_type] */ | ||
38 | #define IGMPV3_MODE_IS_INCLUDE 1 | ||
39 | #define IGMPV3_MODE_IS_EXCLUDE 2 | ||
40 | #define IGMPV3_CHANGE_TO_INCLUDE 3 | ||
41 | #define IGMPV3_CHANGE_TO_EXCLUDE 4 | ||
42 | #define IGMPV3_ALLOW_NEW_SOURCES 5 | ||
43 | #define IGMPV3_BLOCK_OLD_SOURCES 6 | ||
44 | |||
45 | struct igmpv3_grec { | ||
46 | __u8 grec_type; | ||
47 | __u8 grec_auxwords; | ||
48 | __u16 grec_nsrcs; | ||
49 | __u32 grec_mca; | ||
50 | __u32 grec_src[0]; | ||
51 | }; | ||
52 | |||
53 | struct igmpv3_report { | ||
54 | __u8 type; | ||
55 | __u8 resv1; | ||
56 | __u16 csum; | ||
57 | __u16 resv2; | ||
58 | __u16 ngrec; | ||
59 | struct igmpv3_grec grec[0]; | ||
60 | }; | ||
61 | |||
62 | struct igmpv3_query { | ||
63 | __u8 type; | ||
64 | __u8 code; | ||
65 | __u16 csum; | ||
66 | __u32 group; | ||
67 | #if defined(__LITTLE_ENDIAN_BITFIELD) | ||
68 | __u8 qrv:3, | ||
69 | suppress:1, | ||
70 | resv:4; | ||
71 | #elif defined(__BIG_ENDIAN_BITFIELD) | ||
72 | __u8 resv:4, | ||
73 | suppress:1, | ||
74 | qrv:3; | ||
75 | #else | ||
76 | #error "Please fix <asm/byteorder.h>" | ||
77 | #endif | ||
78 | __u8 qqic; | ||
79 | __u16 nsrcs; | ||
80 | __u32 srcs[0]; | ||
81 | }; | ||
82 | |||
83 | #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */ | ||
84 | #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */ | ||
85 | #define IGMP_DVMRP 0x13 /* DVMRP routing */ | ||
86 | #define IGMP_PIM 0x14 /* PIM routing */ | ||
87 | #define IGMP_TRACE 0x15 | ||
88 | #define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x11 */ | ||
89 | #define IGMP_HOST_LEAVE_MESSAGE 0x17 | ||
90 | #define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x11 */ | ||
91 | |||
92 | #define IGMP_MTRACE_RESP 0x1e | ||
93 | #define IGMP_MTRACE 0x1f | ||
94 | |||
95 | |||
96 | /* | ||
97 | * Use the BSD names for these for compatibility | ||
98 | */ | ||
99 | |||
100 | #define IGMP_DELAYING_MEMBER 0x01 | ||
101 | #define IGMP_IDLE_MEMBER 0x02 | ||
102 | #define IGMP_LAZY_MEMBER 0x03 | ||
103 | #define IGMP_SLEEPING_MEMBER 0x04 | ||
104 | #define IGMP_AWAKENING_MEMBER 0x05 | ||
105 | |||
106 | #define IGMP_MINLEN 8 | ||
107 | |||
108 | #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */ | ||
109 | /* query (in seconds) */ | ||
110 | |||
111 | #define IGMP_TIMER_SCALE 10 /* denotes that the igmphdr->timer field */ | ||
112 | /* specifies time in 10th of seconds */ | ||
113 | |||
114 | #define IGMP_AGE_THRESHOLD 400 /* If this host don't hear any IGMP V1 */ | ||
115 | /* message in this period of time, */ | ||
116 | /* revert to IGMP v2 router. */ | ||
117 | |||
118 | #define IGMP_ALL_HOSTS htonl(0xE0000001L) | ||
119 | #define IGMP_ALL_ROUTER htonl(0xE0000002L) | ||
120 | #define IGMPV3_ALL_MCR htonl(0xE0000016L) | ||
121 | #define IGMP_LOCAL_GROUP htonl(0xE0000000L) | ||
122 | #define IGMP_LOCAL_GROUP_MASK htonl(0xFFFFFF00L) | ||
123 | |||
124 | /* | ||
125 | * struct for keeping the multicast list in | ||
126 | */ | ||
127 | |||
128 | #ifdef __KERNEL__ | ||
129 | #include <linux/skbuff.h> | ||
130 | #include <linux/in.h> | ||
131 | |||
132 | struct ip_sf_socklist | ||
133 | { | ||
134 | unsigned int sl_max; | ||
135 | unsigned int sl_count; | ||
136 | __u32 sl_addr[0]; | ||
137 | }; | ||
138 | |||
139 | #define IP_SFLSIZE(count) (sizeof(struct ip_sf_socklist) + \ | ||
140 | (count) * sizeof(__u32)) | ||
141 | |||
142 | #define IP_SFBLOCK 10 /* allocate this many at once */ | ||
143 | |||
144 | /* ip_mc_socklist is real list now. Speed is not argument; | ||
145 | this list never used in fast path code | ||
146 | */ | ||
147 | |||
148 | struct ip_mc_socklist | ||
149 | { | ||
150 | struct ip_mc_socklist *next; | ||
151 | int count; | ||
152 | struct ip_mreqn multi; | ||
153 | unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ | ||
154 | struct ip_sf_socklist *sflist; | ||
155 | }; | ||
156 | |||
157 | struct ip_sf_list | ||
158 | { | ||
159 | struct ip_sf_list *sf_next; | ||
160 | __u32 sf_inaddr; | ||
161 | unsigned long sf_count[2]; /* include/exclude counts */ | ||
162 | unsigned char sf_gsresp; /* include in g & s response? */ | ||
163 | unsigned char sf_oldin; /* change state */ | ||
164 | unsigned char sf_crcount; /* retrans. left to send */ | ||
165 | }; | ||
166 | |||
167 | struct ip_mc_list | ||
168 | { | ||
169 | struct in_device *interface; | ||
170 | unsigned long multiaddr; | ||
171 | struct ip_sf_list *sources; | ||
172 | struct ip_sf_list *tomb; | ||
173 | unsigned int sfmode; | ||
174 | unsigned long sfcount[2]; | ||
175 | struct ip_mc_list *next; | ||
176 | struct timer_list timer; | ||
177 | int users; | ||
178 | atomic_t refcnt; | ||
179 | spinlock_t lock; | ||
180 | char tm_running; | ||
181 | char reporter; | ||
182 | char unsolicit_count; | ||
183 | char loaded; | ||
184 | unsigned char gsquery; /* check source marks? */ | ||
185 | unsigned char crcount; | ||
186 | }; | ||
187 | |||
188 | /* V3 exponential field decoding */ | ||
189 | #define IGMPV3_MASK(value, nb) ((nb)>=32 ? (value) : ((1<<(nb))-1) & (value)) | ||
190 | #define IGMPV3_EXP(thresh, nbmant, nbexp, value) \ | ||
191 | ((value) < (thresh) ? (value) : \ | ||
192 | ((IGMPV3_MASK(value, nbmant) | (1<<(nbmant+nbexp))) << \ | ||
193 | (IGMPV3_MASK((value) >> (nbmant), nbexp) + (nbexp)))) | ||
194 | |||
195 | #define IGMPV3_QQIC(value) IGMPV3_EXP(0x80, 4, 3, value) | ||
196 | #define IGMPV3_MRC(value) IGMPV3_EXP(0x80, 4, 3, value) | ||
197 | |||
198 | extern int ip_check_mc(struct in_device *dev, u32 mc_addr, u32 src_addr, u16 proto); | ||
199 | extern int igmp_rcv(struct sk_buff *); | ||
200 | extern int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr); | ||
201 | extern int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr); | ||
202 | extern void ip_mc_drop_socket(struct sock *sk); | ||
203 | extern int ip_mc_source(int add, int omode, struct sock *sk, | ||
204 | struct ip_mreq_source *mreqs, int ifindex); | ||
205 | extern int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf,int ifindex); | ||
206 | extern int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf, | ||
207 | struct ip_msfilter __user *optval, int __user *optlen); | ||
208 | extern int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf, | ||
209 | struct group_filter __user *optval, int __user *optlen); | ||
210 | extern int ip_mc_sf_allow(struct sock *sk, u32 local, u32 rmt, int dif); | ||
211 | extern void ip_mr_init(void); | ||
212 | extern void ip_mc_init_dev(struct in_device *); | ||
213 | extern void ip_mc_destroy_dev(struct in_device *); | ||
214 | extern void ip_mc_up(struct in_device *); | ||
215 | extern void ip_mc_down(struct in_device *); | ||
216 | extern void ip_mc_dec_group(struct in_device *in_dev, u32 addr); | ||
217 | extern void ip_mc_inc_group(struct in_device *in_dev, u32 addr); | ||
218 | #endif | ||
219 | #endif | ||