www.pudn.com > ucos+net.zip > ETHER.H
/*
* $Id: ETHER.H,v 1.3 2002/02/07 10:25:41 linfusheng Exp $
*/
#ifndef ETHER_H
#define ETHER_H
/* Standard interface flags (netdevice->flags). */
#define IFF_UP 0x1 /* interface is up */
#define IFF_BROADCAST 0x2 /* broadcast address valid */
#define IFF_DEBUG 0x4 /* turn on debugging */
#define IFF_LOOPBACK 0x8 /* is a loopback net */
#define IFF_POINTOPOINT 0x10 /* interface is has p-p link */
#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
#define IFF_RUNNING 0x40 /* resources allocated */
#define IFF_NOARP 0x80 /* no ARP protocol */
#define IFF_PROMISC 0x100 /* receive all packets */
#define IFF_ALLMULTI 0x200 /* receive all multicast packets*/
#define IFF_MASTER 0x400 /* master of a load balancer */
#define IFF_SLAVE 0x800 /* slave of a load balancer */
#define IFF_MULTICAST 0x1000 /* Supports multicast */
#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_MASTER|IFF_SLAVE|IFF_RUNNING)
#define IFF_PORTSEL 0x2000 /* can set media type */
#define IFF_AUTOMEDIA 0x4000 /* auto media select active */
#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses*/
/* Private (from user) interface flags (netdevice->priv_flags). */
#define IFF_802_1Q_VLAN 0x1 /* 802.1Q VLAN device. */
/* ARP protocol opcodes. */
#define ARPOP_REQUEST 1 /* ARP request. */
#define ARPOP_REPLY 2 /* ARP reply. */
#define ARPOP_RREQUEST 3 /* RARP request. */
#define ARPOP_RREPLY 4 /* RARP reply. */
#define ARPOP_InREQUEST 8 /* InARP request. */
#define ARPOP_InREPLY 9 /* InARP reply. */
#define ARPOP_NAK 10 /* (ATM)ARP NAK. */
/* ARP protocol HARDWARE identifiers. */
#define ARPHRD_NETROM 0 /* From KA9Q: NET/ROM pseudo. */
#define ARPHRD_ETHER 1 /* Ethernet 10/100Mbps. */
#define ARPHRD_EETHER 2 /* Experimental Ethernet. */
#define ARPHRD_AX25 3 /* AX.25 Level 2. */
#define ARPHRD_PRONET 4 /* PROnet token ring. */
#define ARPHRD_CHAOS 5 /* Chaosnet. */
#define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB. */
#define ARPHRD_ARCNET 7 /* ARCnet. */
#define ARPHRD_APPLETLK 8 /* APPLEtalk. */
#define ARPHRD_DLCI 15 /* Frame Relay DLCI. */
#define ARPHRD_ATM 19 /* ATM. */
#define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id). */
/* Ethernet protocol ID's */
#define ETHERTYPE_PUP 0x0200 /* Xerox PUP */
#define ETHERTYPE_IP 0x0800 /* IP */
#define ETHERTYPE_ARP 0x0806 /* Address resolution */
#define ETHERTYPE_REVARP 0x8035 /* Reverse ARP */
/* Standard well-defined IP protocols. */
enum {
IPPROTO_IP = 0, /* Dummy protocol for TCP */
IPPROTO_ICMP = 1, /* Internet Control Message Protocol */
IPPROTO_IGMP = 2, /* Internet Group Management Protocol */
IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */
IPPROTO_TCP = 6, /* Transmission Control Protocol */
IPPROTO_EGP = 8, /* Exterior Gateway Protocol */
IPPROTO_PUP = 12, /* PUP protocol */
IPPROTO_UDP = 17, /* User Datagram Protocol */
IPPROTO_IDP = 22, /* XNS IDP protocol */
IPPROTO_RSVP = 46, /* RSVP protocol */
IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */
IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */
IPPROTO_PIM = 103, /* Protocol Independent Multicast */
IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */
IPPROTO_AH = 51, /* Authentication Header protocol */
IPPROTO_COMP = 108, /* Compression Header protocol */
IPPROTO_RAW = 255, /* Raw IP packets */
IPPROTO_MAX
};
/*
I'm moving towards the defined names in linux/if_ether.h for clarity.
The confusion between 60/64 and 1514/1518 arose because the NS8390
counts the 4 byte frame checksum in the incoming packet, but not
in the outgoing packet. 60/1514 are the correct numbers for most
if not all of the other NIC controllers. I will be retiring the
64/1518 defines in the lead-up to 5.0.
*/
#define ETH_ALEN 6 /* Size of Ethernet address */
#define ETH_HLEN 14 /* Size of ethernet header */
#define ETH_ZLEN 60 /* Minimum packet */
/*#define ETH_MIN_PACKET 64*/
#define ETH_FRAME_LEN 1514 /* Maximum packet */
/* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
#define MAX_ETH_FRAME_SIZE 1536
/* Same after going through htonl */
#define IP_BROADCAST 0xFFFFFFFF
#define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
struct in_addr{
unsigned long s_addr;
};
struct arptable_t {
struct in_addr ipaddr;
unsigned char node[6];
};
/* 10Mb/s ethernet header */
struct ethhdr
{
unsigned char ether_dhost[ETH_ALEN]; /* destination eth addr */
unsigned char ether_shost[ETH_ALEN]; /* source ether addr */
unsigned short ether_type; /* packet type ID field */
};
struct arphdr
{
unsigned short ar_hrd; /* Format of hardware address. */
unsigned short ar_pro; /* Format of protocol address. */
unsigned char ar_hln; /* Length of hardware address. */
unsigned char ar_pln; /* Length of protocol address. */
unsigned short ar_op; /* ARP opcode (command). */
};
/*
* Ethernet Address Resolution Protocol.
*
* See RFC 826 for protocol description. Structure below is adapted
* to resolving internet addresses. Field names used correspond to
* RFC 826.
*/
struct ether_arp {
struct arphdr ea_hdr; /* fixed-size header */
unsigned char arp_sha[ETH_ALEN]; /* sender hardware address */
unsigned char arp_spa[4]; /* sender protocol address */
unsigned char arp_tha[ETH_ALEN]; /* target hardware address */
unsigned char arp_tpa[4]; /* target protocol address */
};
#define arp_hrd ea_hdr.ar_hrd
#define arp_pro ea_hdr.ar_pro
#define arp_hln ea_hdr.ar_hln
#define arp_pln ea_hdr.ar_pln
#define arp_op ea_hdr.ar_op
/*
* A pity sipaddr and tipaddr are not longword aligned or we could use
* in_addr. No, I don't want to use #pragma packed.
*/
struct arprequest {
unsigned short hwtype;
unsigned short protocol;
unsigned char hwlen;
unsigned char protolen;
unsigned short opcode;
unsigned char shwaddr[6];
unsigned char sipaddr[4];
unsigned char thwaddr[6];
unsigned char tipaddr[4];
};
struct iphdr {
// unsigned char verhdrlen :4;
unsigned char ihl:4;
unsigned char version:4;
unsigned char tos;
unsigned short tot_len;
unsigned short id;
unsigned short frag_off;
unsigned char ttl;
unsigned char protocol;
unsigned short check;
struct in_addr src;
struct in_addr dest;
};
struct udphdr {
unsigned short src;
unsigned short dest;
unsigned short len;
unsigned short chksum;
};
struct icmphdr {
u_char type;
u_char code;
u_short checksum;
union {
struct {
u_short id;
u_short sequence;
} echo;
u_long gateway;
struct {
u_short __unused;
u_short mtu;
} frag;
} un;
};
extern int arprecv(struct nbuf *nbuf);
extern int iprecv(struct nbuf *nbuf);
extern int icmprecv(struct nbuf *nbuf);
#endif
/* $Log: ETHER.H,v $
/* Revision 1.3 2002/02/07 10:25:41 linfusheng
/* update
/*
/* Revision 1.2 2002/01/28 00:46:25 linfusheng
/* update
/*
*/