add directory Linux-0.98
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230
Linux-0.98/Yggdrasil-0.98.3/usr/include/net/if.h
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230
Linux-0.98/Yggdrasil-0.98.3/usr/include/net/if.h
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/*
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* Copyright (c) 1982, 1986 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* @(#)if.h 7.3 (Berkeley) 6/27/88
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*/
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#ifndef _NET_IF_H
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#define _NET_IF_H
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/*
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* Structures defining a network interface, providing a packet
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* transport mechanism (ala level 0 of the PUP protocols).
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*
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* Each interface accepts output datagrams of a specified maximum
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* length, and provides higher level routines with input datagrams
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* received from its medium.
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*
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* Output occurs when the routine if_output is called, with three parameters:
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* (*ifp->if_output)(ifp, m, dst)
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* Here m is the mbuf chain to be sent and dst is the destination address.
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* The output routine encapsulates the supplied datagram if necessary,
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* and then transmits it on its medium.
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*
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* On input, each interface unwraps the data received by it, and either
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* places it on the input queue of a internetwork datagram routine
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* and posts the associated software interrupt, or passes the datagram to a raw
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* packet input routine.
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*
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* Routines exist for locating interfaces by their addresses
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* or for locating a interface on a certain network, as well as more general
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* routing and gateway routines maintaining information used to locate
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* interfaces. These routines live in the files if.c and route.c
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*/
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/*
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* Structure defining a queue for a network interface.
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*
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* (Would like to call this struct ``if'', but C isn't PL/1.)
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*/
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struct ifnet {
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char *if_name; /* name, e.g. ``en'' or ``lo'' */
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short if_unit; /* sub-unit for lower level driver */
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short if_mtu; /* maximum transmission unit */
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short if_flags; /* up/down, broadcast, etc. */
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short if_timer; /* time 'til if_watchdog called */
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int if_metric; /* routing metric (external only) */
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struct ifaddr *if_addrlist; /* linked list of addresses per if */
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struct ifqueue {
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struct mbuf *ifq_head;
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struct mbuf *ifq_tail;
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int ifq_len;
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int ifq_maxlen;
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int ifq_drops;
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} if_snd; /* output queue */
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/* procedure handles */
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int (*if_init)(); /* init routine */
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int (*if_output)(); /* output routine */
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int (*if_ioctl)(); /* ioctl routine */
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int (*if_reset)(); /* bus reset routine */
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int (*if_watchdog)(); /* timer routine */
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/* generic interface statistics */
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int if_ipackets; /* packets received on interface */
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int if_ierrors; /* input errors on interface */
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int if_opackets; /* packets sent on interface */
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int if_oerrors; /* output errors on interface */
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int if_collisions; /* collisions on csma interfaces */
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/* end statistics */
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struct ifnet *if_next;
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};
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#define IFF_UP 0x1 /* interface is up */
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#define IFF_BROADCAST 0x2 /* broadcast address valid */
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#define IFF_DEBUG 0x4 /* turn on debugging */
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#define IFF_LOOPBACK 0x8 /* is a loopback net */
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#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
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#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
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#define IFF_RUNNING 0x40 /* resources allocated */
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#define IFF_NOARP 0x80 /* no address resolution protocol */
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/* next two not supported now, but reserved: */
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#define IFF_PROMISC 0x100 /* receive all packets */
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#define IFF_ALLMULTI 0x200 /* receive all multicast packets */
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/* flags set internally only: */
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#define IFF_CANTCHANGE (IFF_BROADCAST | IFF_POINTOPOINT | IFF_RUNNING)
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/*
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* Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)
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* input routines have queues of messages stored on ifqueue structures
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* (defined above). Entries are added to and deleted from these structures
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* by these macros, which should be called with ipl raised to splimp().
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*/
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#define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
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#define IF_DROP(ifq) ((ifq)->ifq_drops++)
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#define IF_ENQUEUE(ifq, m) { \
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(m)->m_act = 0; \
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if ((ifq)->ifq_tail == 0) \
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(ifq)->ifq_head = m; \
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else \
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(ifq)->ifq_tail->m_act = m; \
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(ifq)->ifq_tail = m; \
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(ifq)->ifq_len++; \
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}
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#define IF_PREPEND(ifq, m) { \
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(m)->m_act = (ifq)->ifq_head; \
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if ((ifq)->ifq_tail == 0) \
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(ifq)->ifq_tail = (m); \
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(ifq)->ifq_head = (m); \
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(ifq)->ifq_len++; \
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}
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/*
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* Packets destined for level-1 protocol input routines
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* have a pointer to the receiving interface prepended to the data.
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* IF_DEQUEUEIF extracts and returns this pointer when dequeueing the packet.
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* IF_ADJ should be used otherwise to adjust for its presence.
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*/
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#define IF_ADJ(m) { \
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(m)->m_off += sizeof(struct ifnet *); \
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(m)->m_len -= sizeof(struct ifnet *); \
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if ((m)->m_len == 0) { \
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struct mbuf *n; \
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MFREE((m), n); \
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(m) = n; \
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} \
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}
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#define IF_DEQUEUEIF(ifq, m, ifp) { \
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(m) = (ifq)->ifq_head; \
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if (m) { \
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if (((ifq)->ifq_head = (m)->m_act) == 0) \
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(ifq)->ifq_tail = 0; \
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(m)->m_act = 0; \
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(ifq)->ifq_len--; \
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(ifp) = *(mtod((m), struct ifnet **)); \
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IF_ADJ(m); \
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} \
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}
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#define IF_DEQUEUE(ifq, m) { \
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(m) = (ifq)->ifq_head; \
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if (m) { \
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if (((ifq)->ifq_head = (m)->m_act) == 0) \
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(ifq)->ifq_tail = 0; \
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(m)->m_act = 0; \
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(ifq)->ifq_len--; \
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} \
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}
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#define IFQ_MAXLEN 50
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#define IFNET_SLOWHZ 1 /* granularity is 1 second */
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/*
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* The ifaddr structure contains information about one address
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* of an interface. They are maintained by the different address families,
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* are allocated and attached when an address is set, and are linked
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* together so all addresses for an interface can be located.
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*/
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struct ifaddr {
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struct sockaddr ifa_addr; /* address of interface */
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union {
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struct sockaddr ifu_broadaddr;
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struct sockaddr ifu_dstaddr;
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} ifa_ifu;
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#define ifa_broadaddr ifa_ifu.ifu_broadaddr /* broadcast address */
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#define ifa_dstaddr ifa_ifu.ifu_dstaddr /* other end of p-to-p link */
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struct ifnet *ifa_ifp; /* back-pointer to interface */
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struct ifaddr *ifa_next; /* next address for interface */
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};
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/*
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* Interface request structure used for socket
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* ioctl's. All interface ioctl's must have parameter
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* definitions which begin with ifr_name. The
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* remainder may be interface specific.
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*/
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struct ifreq {
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#define IFNAMSIZ 16
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char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
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union {
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struct sockaddr ifru_addr;
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struct sockaddr ifru_dstaddr;
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struct sockaddr ifru_broadaddr;
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short ifru_flags;
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int ifru_metric;
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caddr_t ifru_data;
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} ifr_ifru;
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#define ifr_addr ifr_ifru.ifru_addr /* address */
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#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
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#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
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#define ifr_flags ifr_ifru.ifru_flags /* flags */
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#define ifr_metric ifr_ifru.ifru_metric /* metric */
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#define ifr_data ifr_ifru.ifru_data /* for use by interface */
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};
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/*
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* Structure used in SIOCGIFCONF request.
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* Used to retrieve interface configuration
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* for machine (useful for programs which
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* must know all networks accessible).
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*/
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struct ifconf {
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int ifc_len; /* size of associated buffer */
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union {
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caddr_t ifcu_buf;
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struct ifreq *ifcu_req;
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} ifc_ifcu;
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#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
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#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
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};
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#ifdef KERNEL
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#include "../net/if_arp.h"
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struct ifqueue rawintrq; /* raw packet input queue */
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struct ifnet *ifnet;
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struct ifaddr *ifa_ifwithaddr(), *ifa_ifwithnet();
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struct ifaddr *ifa_ifwithdstaddr();
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#else KERNEL
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#include <net/if_arp.h>
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#endif KERNEL
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#endif /* _NET_IF_H */
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67
Linux-0.98/Yggdrasil-0.98.3/usr/include/net/if_arp.h
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67
Linux-0.98/Yggdrasil-0.98.3/usr/include/net/if_arp.h
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@@ -0,0 +1,67 @@
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/*
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* Copyright (c) 1986 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* @(#)if_arp.h 7.3 (Berkeley) 6/27/88
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*/
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#ifndef _NET_IF_H
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#define _NET_IF_H
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/*
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* Address Resolution Protocol.
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*
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* See RFC 826 for protocol description. ARP packets are variable
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* in size; the arphdr structure defines the fixed-length portion.
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* Protocol type values are the same as those for 10 Mb/s Ethernet.
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* It is followed by the variable-sized fields ar_sha, arp_spa,
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* arp_tha and arp_tpa in that order, according to the lengths
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* specified. Field names used correspond to RFC 826.
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*/
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struct arphdr {
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u_short ar_hrd; /* format of hardware address */
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#define ARPHRD_ETHER 1 /* ethernet hardware address */
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u_short ar_pro; /* format of protocol address */
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u_char ar_hln; /* length of hardware address */
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u_char ar_pln; /* length of protocol address */
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u_short ar_op; /* one of: */
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#define ARPOP_REQUEST 1 /* request to resolve address */
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#define ARPOP_REPLY 2 /* response to previous request */
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/*
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* The remaining fields are variable in size,
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* according to the sizes above.
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*/
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/* u_char ar_sha[]; /* sender hardware address */
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/* u_char ar_spa[]; /* sender protocol address */
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/* u_char ar_tha[]; /* target hardware address */
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/* u_char ar_tpa[]; /* target protocol address */
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};
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/*
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* ARP ioctl request
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*/
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struct arpreq {
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struct sockaddr arp_pa; /* protocol address */
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struct sockaddr arp_ha; /* hardware address */
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int arp_flags; /* flags */
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};
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/* arp_flags and at_flags field values */
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#define ATF_INUSE 0x01 /* entry in use */
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#define ATF_COM 0x02 /* completed entry (enaddr valid) */
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#define ATF_PERM 0x04 /* permanent entry */
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#define ATF_PUBL 0x08 /* publish entry (respond for other host) */
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#define ATF_USETRAILERS 0x10 /* has requested trailers */
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#endif /* _NET_IF_H */
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