home *** CD-ROM | disk | FTP | other *** search
- #ifndef __IF_32H
- #define __IF_32H
-
- /*
- * Copyright (c) 1982, 1986 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that this notice is preserved and that due credit is given
- * to the University of California at Berkeley. The name of the University
- * may not be used to endorse or promote products derived from this
- * software without specific prior written permission. This software
- * is provided ``as is'' without express or implied warranty.
- *
- * @(#)if.h 7.2 (Berkeley) 12/30/87
- */
-
- /*
- * Structures defining a network interface, providing a packet
- * transport mechanism (ala level 0 of the PUP protocols).
- *
- * Each interface accepts output datagrams of a specified maximum
- * length, and provides higher level routines with input datagrams
- * received from its medium.
- *
- * Output occurs when the routine if_output is called, with three parameters:
- * (*ifp->if_output)(ifp, m, dst)
- * Here m is the mbuf chain to be sent and dst is the destination address.
- * The output routine encapsulates the supplied datagram if necessary,
- * and then transmits it on its medium.
- *
- * On input, each interface unwraps the data received by it, and either
- * places it on the input queue of a internetwork datagram routine
- * and posts the associated software interrupt, or passes the datagram to a raw
- * packet input routine.
- *
- * Routines exist for locating interfaces by their addresses
- * or for locating a interface on a certain network, as well as more general
- * routing and gateway routines maintaining information used to locate
- * interfaces. These routines live in the files if.c and route.c
- */
-
-
- #ifndef IFMIB_ENTRIES
- #define IFMIB_ENTRIES 42
- #endif
-
- /*
- * Structure defining a queue for a network interface.
- *
- * (Would like to call this struct ``if'', but C isn't PL/1.)
- */
- #pragma pack(1) /* force on doubleword boundary */
- struct mbuf; /* Pre declaration */
- struct ifaddr; /* Pre declaration */
- struct ifnet {
- char *if_name; /* name, e.g. ``en'' or ``lo'' */
- short if_unit; /* sub-unit for lower level driver */
- short if_mtu; /* maximum transmission unit */
- short if_flags; /* up/down, broadcast, etc. */
- short if_timer; /* time 'til if_watchdog called */
- int if_metric; /* routing metric (external only) */
- struct ifaddr *if_addrlist; /* linked list of addresses per if */
- struct ifqueue {
- struct mbuf *ifq_head;
- struct mbuf *ifq_tail;
- short ifq_len;
- short ifq_maxlen;
- u_short ifq_drops;
- } if_snd; /* output queue */
- /* procedure handles */
- int (*if_init)(void); /* init routine */
- int (*if_output)(void); /* output routine */
- int (*if_ioctl)(void); /* ioctl routine */
- int (*if_reset)(void); /* bus reset routine */
- int (*if_watchdog)(void); /* timer routine */
- /* generic interface statistics */
- u_short if_ipackets; /* do not take icmp redirect flag */
- u_short if_ierrors; /* input errors on interface */
- u_short if_opackets; /* packets sent on interface */
- u_short if_oerrors; /* output errors on interface */
- u_short if_collisions; /* 802.3 flag */
- /* end statistics */
- struct ifnet *if_next;
- #ifdef OS2
- u_char if_adapternum; /* adapter number */
- u_int if_adaptype;
- u_int if_broadcast;
- u_long if_speed;
-
- /* Interface TCP estimates/controls. Serves the same */
- /* purpose as the per-route values in BSD-Reno, but I didn't */
- /* have to touch any of the route manipulation code. */
- u_short if_rtt; /* Est interface rtt in ms */
- u_short if_rttvar; /* Est interface rttvar in ms */
- u_short if_rttmin; /* Fixed interface rttmin in ms */
- u_short if_sendpipe; /* Send socket buffer/window size */
- u_short if_recvpipe; /* Recv socket buffer/window size */
- u_short if_ssthresh; /* Gateway buffer limit (slow strt) */
- u_long if_eflags; /* Extended Flags */
- struct ifqueue if_traceq; /* packet trace queue */
- u_short if_segsize; /* segment size for interface*/
- u_short if_use576; /* use 576 or 1460 as def. mss if going thru a router */
- /* Token Ring IP multicast flag */
- u_short if_rfc1469; /* using broadcast or functional address */
- /* for IP Mulitcast */
- #endif
- };
- #pragma pack() /* reset to default packing */
-
- #define IF_RTTSCALE 1000
-
- #ifdef OS2
- #define IFF_RFC1469_BC 1 /* using broadcast */
- #define IFF_RFC1469_FA 2 /* using functional address */
- #define IFF_RFC1469_MA 3 /* using mulitcast address */
- #endif
-
- #pragma pack(1) /* force on doubleword boundary */
- struct ifmib {
- short ifNumber; /* number of network interfaces */
- struct iftable {
- short ifIndex; /* index of this interface */
- char ifDescr[45]; /* description */
- short ifType; /* type of the interface */
- short ifMtu; /* MTU of the interface */
- char ifPhysAddr[6]; /* MTU of the interface */
- short ifOperStatus;
- u_long ifSpeed;
- u_long ifLastChange;
- u_long ifInOctets;
- u_long ifOutOctets;
- u_long ifOutDiscards;
- u_long ifInDiscards;
- u_long ifInErrors;
- u_long ifOutErrors;
- u_long ifInUnknownProtos;
- u_long ifInUcastPkts;
- u_long ifOutUcastPkts;
- u_long ifInNUcastPkts;
- u_long ifOutNUcastPkts;
- } iftable[IFMIB_ENTRIES];
- };
- #pragma pack() /* reset to default packing */
-
- #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 point-to-point link */
- #define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
- #define IFF_RUNNING 0x40 /* resources allocated */
- #define IFF_NOARP 0x80 /* no address resolution protocol */
- /* next two not supported now, but reserved: */
- #define IFF_PROMISC 0x100 /* receive all packets */
- #define IFF_ALLMULTI 0x200 /* receive all multicast packets */
- #define IFF_DEFMTU 0x400 /* default mtu of 1500 */
- #define IFF_MULTICAST 0x800 /* supports multicast */
- /*
- * The IFF_MULTICAST flag indicates that the network can support the
- * transmission and reception of higher-level (e.g., IP) multicast packets.
- * It is independent of hardware support for multicasting; for example,
- * point-to-point links or pure broadcast networks may well support
- * higher-level multicasts.
- */
- #define IFF_BRIDGE 0x1000 /* support token ring routine field */
- #define IFF_SNAP 0x2000 /* support extended SAP header */
- #define IFF_ETHER 0x4000 /* Ethernet interface */
- #define IFF_LOOPBRD 0x8000 /* Ethernet interface */
- /* flags set internally only: */
- #define IFF_CANTCHANGE (IFF_BROADCAST | IFF_POINTOPOINT | IFF_RUNNING)
-
- #ifdef OS2
- #define IFFE_PKTTRACE 0x00000001 /* trace datalink where possible */
- #define IFFE_IPTRACE 0x00000002 /* trace ONLY IP packets */
-
- #ifdef __32BIT__
- struct pkt_trace_hdr {
- u_short pt_htype; /* header type */
- u_short pt_len; /* in: pt_buf len, out: packet len */
- caddr_t _Seg16 pt_data; /* packet */
- u_long pt_tstamp; /* time stamp in milliseconds */
- };
- #endif
-
- #define HT_IP 0x01 /* IP */
- #define HT_ETHER 0x06 /* Ethernet */
- #define HT_ISO88023 0x07 /* CSMA CD */
- #define HT_ISO88025 0x09 /* Token Ring */
- #define HT_SLIP 0x1c /* Serial Line IP */
- #define HT_PPP 0x18 /* PPP IP */
- #endif
-
- /*
- * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)
- * input routines have queues of messages stored on ifqueue structures
- * (defined above). Entries are added to and deleted from these structures
- * by these macros, which should be called with ipl raised to splimp().
- */
- #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
- #define IF_DROP(ifq) ((ifq)->ifq_drops++)
- #define IF_ENQUEUE(ifq, m) { \
- (m)->m_act = 0; \
- if ((ifq)->ifq_tail == 0) \
- (ifq)->ifq_head = m; \
- else \
- (ifq)->ifq_tail->m_act = m; \
- (ifq)->ifq_tail = m; \
- (ifq)->ifq_len++; \
- }
- #define IF_PREPEND(ifq, m) { \
- (m)->m_act = (ifq)->ifq_head; \
- if ((ifq)->ifq_tail == 0) \
- (ifq)->ifq_tail = (m); \
- (ifq)->ifq_head = (m); \
- (ifq)->ifq_len++; \
- }
- /*
- * Packets destined for level-1 protocol input routines
- * have a pointer to the receiving interface prepended to the data.
- * IF_DEQUEUEIF extracts and returns this pointer when dequeueing the packet.
- * IF_ADJ should be used otherwise to adjust for its presence.
- */
- #define IF_ADJ(m) { \
- (m)->m_off += sizeof(struct ifnet *); \
- (m)->m_len -= sizeof(struct ifnet *); \
- if ((m)->m_len == 0) { \
- struct mbuf *n; \
- MFREE((m), n); \
- (m) = n; \
- } \
- }
- #define IF_DEQUEUEIF(ifq, m, ifp) { \
- (m) = (ifq)->ifq_head; \
- if (m) { \
- if (((ifq)->ifq_head = (m)->m_act) == 0) \
- (ifq)->ifq_tail = 0; \
- (m)->m_act = 0; \
- (ifq)->ifq_len--; \
- (ifp) = *(mtod((m), struct ifnet * *)); \
- IF_ADJ(m); \
- } \
- }
- #define IF_DEQUEUE(ifq, m) { \
- (m) = (ifq)->ifq_head; \
- if (m) { \
- if (((ifq)->ifq_head = (m)->m_act) == 0) \
- (ifq)->ifq_tail = 0; \
- (m)->m_act = 0; \
- (ifq)->ifq_len--; \
- } \
- }
-
- #define IFQ_MAXLEN 50
- #define IFNET_SLOWHZ 1 /* granularity is 1 second */
-
- /*
- * The ifaddr structure contains information about one address
- * of an interface. They are maintained by the different address families,
- * are allocated and attached when an address is set, and are linked
- * together so all addresses for an interface can be located.
- */
- struct ifaddr {
- struct sockaddr ifa_addr; /* address of interface */
- union {
- struct sockaddr ifu_broadaddr;
- struct sockaddr ifu_dstaddr;
- } ifa_ifu;
- #define ifa_broadaddr ifa_ifu.ifu_broadaddr /* broadcast address */
- #define ifa_dstaddr ifa_ifu.ifu_dstaddr /* other end of p-to-p link */
- struct ifnet *ifa_ifp; /* back-pointer to interface */
- struct ifaddr *ifa_next; /* next address for interface */
- };
-
- /*
- * Interface request structure used for socket
- * ioctl's. All interface ioctl's must have parameter
- * definitions which begin with ifr_name. The
- * remainder may be interface specific.
- */
- struct ifreq {
- #define IFNAMSIZ 16
- char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
- union {
- struct sockaddr ifru_addr;
- struct sockaddr ifru_dstaddr;
- struct sockaddr ifru_broadaddr;
- short ifru_flags;
- int ifru_metric;
- caddr_t ifru_data;
- } ifr_ifru;
- #define ifr_addr ifr_ifru.ifru_addr /* address */
- #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
- #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
- #define ifr_flags ifr_ifru.ifru_flags /* flags */
- #define ifr_metric ifr_ifru.ifru_metric /* metric */
- #define ifr_data ifr_ifru.ifru_data /* for use by interface */
- };
-
- /*
- * Structure used in SIOCGIFCONF request.
- * Used to retrieve interface configuration
- * for machine (useful for programs which
- * must know all networks accessible).
- */
- struct ifconf {
- int ifc_len; /* size of associated buffer */
- union {
- caddr_t ifcu_buf;
- struct ifreq *ifcu_req;
- } ifc_ifcu;
- #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
- #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
- };
-
- #include <net/if_arp.h>
-
- #endif /* __IF_32H */