43 lines
806 B
C
43 lines
806 B
C
#ifndef IGMP_H
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#define IGMP_H
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#include "stdint.h"
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#include <gpxe/in.h>
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#define IGMP_QUERY 0x11
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#define IGMPv1_REPORT 0x12
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#define IGMPv2_REPORT 0x16
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#define IGMP_LEAVE 0x17
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#define GROUP_ALL_HOSTS 0xe0000001 /* 224.0.0.1 Host byte order */
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#define MULTICAST_MASK 0xf0000000
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#define MULTICAST_NETWORK 0xe0000000
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enum {
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IGMP_SERVER,
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MAX_IGMP
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};
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struct igmp {
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uint8_t type;
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uint8_t response_time;
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uint16_t chksum;
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struct in_addr group;
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} PACKED;
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struct igmp_ip_t { /* Format of an igmp ip packet */
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struct iphdr ip;
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uint8_t router_alert[4]; /* Router alert option */
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struct igmp igmp;
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} PACKED;
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struct igmptable_t {
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struct in_addr group;
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unsigned long time;
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} PACKED;
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extern void join_group ( int slot, unsigned long group );
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extern void leave_group ( int slot );
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#endif /* IGMP_H */
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