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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | /* * Linux NET3: Internet Group Management Protocol [IGMP] * * Authors: * Alan Cox <Alan.Cox@linux.org> * * Extended to talk the BSD extended IGMP protocol of mrouted 3.6 * * * 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 _LINUX_IGMP_H #define _LINUX_IGMP_H /* * IGMP protocol structures */ /* * Header in on cable format */ struct igmphdr { __u8 type; __u8 code; /* For newer IGMP */ __u16 csum; __u32 group; }; #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */ #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */ #define IGMP_DVMRP 0x13 /* DVMRP routing */ #define IGMP_PIM 0x14 /* PIM routing */ #define IGMP_TRACE 0x15 /* CISCO trace */ #define IGMP_HOST_NEW_MEMBERSHIP_REPORT 0x16 /* New version of 0x11 */ #define IGMP_HOST_LEAVE_MESSAGE 0x17 /* An extra BSD seems to send */ #define IGMP_MTRACE_RESP 0x1e #define IGMP_MTRACE 0x1f /* * Use the BSD names for these for compatibility */ #define IGMP_DELAYING_MEMBER 0x01 #define IGMP_IDLE_MEMBER 0x02 #define IGMP_LAZY_MEMBER 0x03 #define IGMP_SLEEPING_MEMBER 0x04 #define IGMP_AWAKENING_MEMBER 0x05 #define IGMP_OLD_ROUTER 0x00 #define IGMP_NEW_ROUTER 0x01 #define IGMP_MINLEN 8 #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */ /* query (in seconds) */ #define IGMP_TIMER_SCALE 10 /* denotes that the igmphdr->timer field */ /* specifies time in 10th of seconds */ #define IGMP_AGE_THRESHOLD 540 /* If this host don't hear any IGMP V1 */ /* message in this period of time, */ /* revert to IGMP v2 router. */ #define IGMP_ALL_HOSTS htonl(0xE0000001L) #define IGMP_ALL_ROUTER htonl(0xE0000002L) #define IGMP_LOCAL_GROUP htonl(0xE0000000L) #define IGMP_LOCAL_GROUP_MASK htonl(0xFFFFFF00L) /* * struct for keeping the multicast list in */ #ifdef __KERNEL__ struct ip_mc_socklist { unsigned long multiaddr[IP_MAX_MEMBERSHIPS]; /* This is a speed trade off */ struct device *multidev[IP_MAX_MEMBERSHIPS]; }; struct ip_mc_list { struct device *interface; unsigned long multiaddr; struct ip_mc_list *next; struct timer_list timer; short tm_running; short reporter; int users; }; struct ip_router_info { struct device *dev; int type; /* type of router which is querier on this interface */ int time; /* # of slow timeouts since last old query */ struct timer_list timer; struct ip_router_info *next; }; extern struct ip_mc_list *ip_mc_head; extern int igmp_rcv(struct sk_buff *, struct device *, struct options *, __u32, unsigned short, __u32, int , struct inet_protocol *); extern void ip_mc_drop_device(struct device *dev); extern int ip_mc_join_group(struct sock *sk, struct device *dev, unsigned long addr); extern int ip_mc_leave_group(struct sock *sk, struct device *dev,unsigned long addr); extern void ip_mc_drop_socket(struct sock *sk); extern void ip_mr_init(void); #endif #endif |