if_ether.h

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#ifndef _GPXE_IF_ETHER_H
#define _GPXE_IF_ETHER_H

FILE_LICENCE ( GPL2_OR_LATER );

#include <stdint.h>

#define ETH_ALEN                6       /* Size of Ethernet address */
#define ETH_HLEN                14      /* Size of ethernet header */
#define ETH_ZLEN                60      /* Minimum packet */
#define ETH_FRAME_LEN           1514    /* Maximum packet */
#define ETH_DATA_ALIGN          2       /* Amount needed to align the data after an ethernet header */
#ifndef ETH_MAX_MTU
#define ETH_MAX_MTU             (ETH_FRAME_LEN-ETH_HLEN)
#endif

#define ETH_P_RAW       0x0000  /* Raw packet */
#define ETH_P_IP        0x0800  /* Internet Protocl Packet */
#define ETH_P_ARP       0x0806  /* Address Resolution Protocol */
#define ETH_P_RARP      0x8035  /* Reverse Address resolution Protocol */
#define ETH_P_IPV6      0x86DD  /* IPv6 over blueblook */
#define ETH_P_SLOW      0x8809  /* Ethernet slow protocols */
#define ETH_P_EAPOL     0x888E  /* 802.1X EAP over LANs */
#define ETH_P_AOE       0x88A2  /* ATA over Ethernet */

/** An Ethernet link-layer header */
struct ethhdr {
        /** Destination MAC address */
        uint8_t h_dest[ETH_ALEN];
        /** Source MAC address */
        uint8_t h_source[ETH_ALEN];
        /** Protocol ID */
        uint16_t h_protocol;
} __attribute__ ((packed));

#endif  /* _GPXE_IF_ETHER_H */