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)
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
#ifndef ETHERLIB_ICMP_PACKET_H
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#define ETHERLIB_ICMP_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_ICMP_PACKET_CLASS (0x0001)
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#define ETH_ICMP_HEADER_SIZE (8)
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typedef enum {
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ICMP_MT_ECHO_REPLY = 0x00,
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ICMP_MT_ECHO_REQUEST = 0x08
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} IcmpMsgType;
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/**
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* ICMP packet properties.
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*/
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typedef struct {
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PcktPropsHeader
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uint8_t type; ///< ICMP message type
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uint8_t code; ///< ICMP message code (~subtype)
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uint16_t checksum; ///< Checksum for the entire packet
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uint16_t identifier; ///< Identifier
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uint16_t sequenceNumber; ///< Sequence number
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} IcmpProps;
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/**
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* Parse ICMP packet header
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* @param hdr pointer to the beginning of ICMP header
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* @param size packet size
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* @param pcktHdrLe linked list of packet headers
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* @param intf Ethernet interface through which transmission and reception is carried out
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* @return always 0
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*/
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int parse_icmp(const uint8_t *hdr, uint32_t size, PcktHeaderElement *pcktHdrLe, struct EthInterface_ *intf, PcktProcFnPassbackData *pb);
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/**
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* Insert ICMP 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_icmp_header(uint8_t *hdr, const PcktHeaderElement *headers, struct EthInterface_ *intf);
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#endif //ETHERLIB_ICMP_PACKET_H
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