diff options
Diffstat (limited to 'pfinet/linux/igmp.h')
| -rw-r--r-- | pfinet/linux/igmp.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/pfinet/linux/igmp.h b/pfinet/linux/igmp.h new file mode 100644 index 00000000..6ca7e019 --- /dev/null +++ b/pfinet/linux/igmp.h @@ -0,0 +1,67 @@ +/* + * Linux NET3: Internet Gateway Management Protocol [IGMP] + * + * Authors: + * Alan Cox <Alan.Cox@linux.org> + * + * + * 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 + */ + +struct igmphdr +{ + unsigned char type; + unsigned char unused; + unsigned short csum; + unsigned long group; +}; + +#define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */ +#define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */ +#define IGMP_HOST_LEAVE_MESSAGE 0x17 /* An extra BSD seems to send */ + + /* 224.0.0.1 */ +#define IGMP_ALL_HOSTS htonl(0xE0000001L) + +/* + * 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; + int tm_running; + int users; +}; + +extern struct ip_mc_list *ip_mc_head; + + +extern int igmp_rcv(struct sk_buff *, struct device *, struct options *, unsigned long, unsigned short, + unsigned long, 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); +#endif +#endif |