| /* |
| * 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 |
| #define IGMP_HOST_NEW_MEMBERSHIP_REPORT 0x16 /* New version of 0x11 */ |
| #define IGMP_HOST_LEAVE_MESSAGE 0x17 |
| |
| #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_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 400 /* 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__ |
| #include <linux/skbuff.h> |
| #include <linux/in.h> |
| |
| /* ip_mc_socklist is real list now. Speed is not argument; |
| this list never used in fast path code |
| */ |
| |
| struct ip_mc_socklist |
| { |
| struct ip_mc_socklist *next; |
| int count; |
| struct ip_mreqn multi; |
| }; |
| |
| struct ip_mc_list |
| { |
| struct in_device *interface; |
| unsigned long multiaddr; |
| struct ip_mc_list *next; |
| struct timer_list timer; |
| int users; |
| atomic_t refcnt; |
| spinlock_t lock; |
| char tm_running; |
| char reporter; |
| char unsolicit_count; |
| char loaded; |
| }; |
| |
| extern int ip_check_mc(struct in_device *dev, u32 mc_addr); |
| extern int igmp_rcv(struct sk_buff *); |
| extern int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr); |
| extern int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr); |
| extern void ip_mc_drop_socket(struct sock *sk); |
| extern void ip_mr_init(void); |
| extern void ip_mc_init_dev(struct in_device *); |
| extern void ip_mc_destroy_dev(struct in_device *); |
| extern void ip_mc_up(struct in_device *); |
| extern void ip_mc_down(struct in_device *); |
| extern int ip_mc_dec_group(struct in_device *in_dev, u32 addr); |
| extern void ip_mc_inc_group(struct in_device *in_dev, u32 addr); |
| #endif |
| #endif |