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Length: 3166 (0xc5e)
Types: TextFile
Notes: UNIX file
Names: »if_ether.h«
└─⟦8c4f54e61⟧ Bits:30004068/disk2.imd Interactive TCP/IP v.1.2
└─⟦8c4f54e61⟧ UNIX Filesystem
└─⟦this⟧ »hb/new/usr/include/netinet/if_ether.h«
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)if_ether.h 2.1 - 89/04/21
*/
#ifndef _h_IF_ETHER
#define _h_IF_ETHER
#ident "@(#)if_ether.h 2.1 - 89/04/21"
/*
* Arp structure for a stream device
*/
struct arpdev {
queue_t *arp_qptr; /* stream write queue */
queue_t *arp_ipq; /* ip queue for other side */
queue_t *arp_arpq; /* arp queue for other side */
u_long arp_state; /* stream state */
u_long arp_flags; /* stream flags */
u_long arp_sap; /* stream sap */
int arp_subtype; /* subnetwork types */
int arp_index; /* index from I_LINK (if linked) */
struct in_addr arp_inaddr; /* internet address */
u_char arp_enaddr[6]; /* ethernet address */
};
/* address that comes down from IP */
#define IP_ADDR_LEN 4
#define IP_FAM_LEN 2
#define IP_INDADDR_LEN (IP_ADDR_LEN + IP_FAM_LEN)
#define ARP_LSAP_LEN 4
#define LSAP_ADDR_LEN (IP_ADDR_LEN + ARP_LSAP_LEN)
#define ETHER_ADDR_LEN 6
#define ETHERTYPE_LEN 2
#define ARP_LEN (ETHER_ADDR_LEN + ETHERTYPE_LEN)
#ifdef DEBUG
#define ARPDEBUG
#endif
#define ARPHIWAT 0x4000
#define ARPLOWAT 0x2000
#define MAXARPSZ 1500
/*
* Structure of a 10Mb/s Ethernet header.
*/
struct ether_header {
u_char ether_dhost[6];
u_char ether_shost[6];
u_short ether_type;
};
#define ETHERTYPE_PUP 0x0200 /* PUP protocol */
#define ETHERTYPE_IP 0x0800 /* IP protocol */
#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */
#define ETHERMTU 1500
#define ETHERMIN (60-14)
/*
* 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 */
u_char arp_sha[6]; /* sender hardware address */
u_char arp_spa[4]; /* sender protocol address */
u_char arp_tha[6]; /* target hardware address */
u_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
#ifdef undef
/*
* Structure shared between the ethernet driver modules and
* the address resolution code. For example, each ec_softc or il_softc
* begins with this structure.
*/
struct arpcom {
struct ifnet ac_if; /* network-visible interface */
u_char ac_enaddr[6]; /* ethernet hardware address */
struct in_addr ac_ipaddr; /* copy of ip address- XXX */
};
#endif
/*
* Internet to ethernet address resolution table.
*/
struct arptab {
struct in_addr at_iaddr; /* internet address */
u_char at_enaddr[6]; /* ethernet address */
u_char at_timer; /* minutes since last reference */
u_char at_flags; /* flags */
mblk_t *at_hold; /* last packet until resolved/timeout */
queue_t *at_hq; /* queue last packet was received on */
};
#ifdef KERNEL
/* extern u_char etherbroadcastaddr[6]; */
extern struct arptab *arptnew();
extern char *ether_sprintf();
#endif
#endif /* _h_IF_ETHER */