Wiesner András
ab8d45932f
- Timestamping management added - Errors due to reading uninitialized data in ARP fixed - EthInterface reworked, incoming packet notification and payload readout separated (through which fixing concurrent access problems) - RX and TX offloads added - Capability to add a packet sieve layer without prior registration of specific packet class added (this makes it possible to register arbitrary EtherType connection blocks, for example)
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
#ifndef ETHERLIB_IGMP_PACKET_H
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#define ETHERLIB_IGMP_PACKET_H
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#include <stdint.h>
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#include "ipv4_types.h"
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#include "ethernet_frame.h"
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#define ETH_IGMP_PACKET_CLASS (0x0002)
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#define ETH_IGMP_HEADER_SIZE (8)
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// IGMPv2 is implemented!
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typedef enum {
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IGMP_MT_MEMBERSHIP_QUERY = 0x11,
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IGMP_MT_MEMBERSHIP_REPORT = 0x16,
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IGMP_MT_LEAVE_GROUP = 0x17,
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} IgmpMsgType;
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/**
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* IGMP packet properties.
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*/
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typedef struct {
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PcktPropsHeader
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uint8_t type; ///< IGMP message type
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uint8_t maxRespTime; ///< Maximum response time in 1/10 seconds
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uint16_t checksum; ///< Checksum for the entire packet
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ip4_addr groupAddr; ///< Group address
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} IgmpProps;
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/**
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* Insert IGMP header.
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* @param hdr pointer to message header
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* @param headers linked list of recursively encapsulated packet headers
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*/
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void insert_igmp_header(uint8_t *hdr, const PcktHeaderElement *headers, struct EthInterface_ *intf);
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/**
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* Parse IGMP packet.
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* @param hdr pointer to the beginning of the IGMP header
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* @param size size of processable buffer area
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* @param pcktHdrLe linket list of packet headers
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* @param intf Ethernet interface
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* @return always 0
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*/
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int parse_igmp(const uint8_t *hdr, uint32_t size, PcktHeaderElement *pcktHdrLe, struct EthInterface_ *intf, PcktProcFnPassbackData *pb);
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#endif //ETHERLIB_IGMP_PACKET_H
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