Ethernet

Frame size

The frame sizes omit the preamble ==

1. define ETH_ALEN 6 /* Octets in one ethernet addr */
2. define ETH_HLEN 14 /* Total octets in header. */
3. define ETH_ZLEN 60 /* Min. octets in frame sans FCS */
4. define ETH_DATA_LEN 1500 /* Max. octets in payload */
5. define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */

Type

1. define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */
2. define ETH_P_PUP 0x0200 /* Xerox PUP packet */
3. define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */
4. define ETH_P_IP 0x0800 /* Internet Protocol packet */
5. define ETH_P_X25 0x0805 /* CCITT X.25 */
6. define ETH_P_ARP 0x0806 /* Address Resolution packet */
7. define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */
8. define ETH_P_IEEEPUP 0x0a00 /* Xerox IEEE802.3 PUP packet */
9. define ETH_P_IEEEPUPAT 0x0a01 /* Xerox IEEE802.3 PUP Addr Trans packet */
10. define ETH_P_DEC 0x6000 /* DEC Assigned proto */
11. define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */
12. define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */
13. define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */
14. define ETH_P_LAT 0x6004 /* DEC LAT */
15. define ETH_P_DIAG 0x6005 /* DEC Diagnostics */
16. define ETH_P_CUST 0x6006 /* DEC Customer use */
17. define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */
18. define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */
19. define ETH_P_ATALK 0x809B /* Appletalk DDP */
20. define ETH_P_AARP 0x80F3 /* Appletalk AARP */
21. define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */
22. define ETH_P_IPX 0x8137 /* IPX over DIX */
23. define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */
24. define ETH_P_WCCP 0x883E /* Web-cache coordination protocol * defined in draft-wilson-wrec-wccp-v2-00.txt */
25. define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */
26. define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */
27. define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */
28. define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */
29. define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */
30. define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport over Ethernet */
31. define ETH_P_AOE 0x88A2 /* ATA over Ethernet */

/*

*	Non DIX types. Won't clash for 1500 types.
*/

1. define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */
2. define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */
3. define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */
4. define ETH_P_802_2 0x0004 /* 802.2 frames */
5. define ETH_P_SNAP 0x0005 /* Internal only */
6. define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */
7. define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/
8. define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */
9. define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */
10. define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/
11. define ETH_P_TR_802_2 0x0011 /* 802.2 frames */
12. define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */
13. define ETH_P_CONTROL 0x0016 /* Card specific control frames */
14. define ETH_P_IRDA 0x0017 /* Linux-IrDA */
15. define ETH_P_ECONET 0x0018 /* Acorn Econet */
16. define ETH_P_HDLC 0x0019 /* HDLC frames */
17. define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */