if.h
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上传日期:2008-05-12
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文件大小:16k
源码类别:
VxWorks
开发平台:
C/C++
- /* if.h - network interface header file */
- /* Copyright 1984 - 2001 Wind River Systems, Inc. */
- /*
- * Copyright (c) 1982, 1986, 1989, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)if.h 8.1 (Berkeley) 6/10/93
- */
- /*
- modification history
- --------------------
- 01m,10oct01,rae merge from truestack ver 01o, base 01j (SPR #69683)
- 01l,17oct00,spm merged from version 01k of tor2_0_x branch (base version 01j):
- updated if_attach to report memory allocation failures
- 01k,29apr99,pul Upgraded NPT phase3 code to tor2.0.0
- 01j,17mar99,spm added support for identical unit numbers (SPR #20913)
- 01i,12dec97,gnn removed a lingering reference to IFF_SCAT.
- 01h,11dec97,gnn removed IFF_SCAT and IFF_LOAN.
- 01g,05oct97,vin added field in ifnet for holding multicast addrs
- 01f,01jul97,vin removed some double declarations.
- 01e,24feb97,bjl moved struct ifqueue declaration outside of struct ifnet
- to make struct ifqueue globally visible for c++
- 01d,31jan97,vin added prototypes for functions in ifnet ().
- 01c,21jan97,gnn added IFF_SCAT for scatter/gather capable drivers.
- 01b,27aug96,gnn added IFF_LOAN for buffer loaning drivers, added ifmreq
- structure to we can retrieve multicast tables
- 01a,03mar96,vin created from BSD4.4 stuff,integrated with 02q of if.h.
- */
- #ifndef __INCifh
- #define __INCifh
- #ifdef __cplusplus
- extern "C" {
- #endif
- #include "vxWorks.h"
- #include "sys/socket.h"
- #include "net/if_arp.h"
- #include "net/route.h"
- #include "ifLib.h"
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 1 /* tell gcc960 not to optimize alignments */
- #endif /* CPU_FAMILY==I960 */
- /*
- * 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
- */
- struct ifqueue {
- struct mbuf *ifq_head;
- struct mbuf *ifq_tail;
- int ifq_len;
- int ifq_maxlen;
- int ifq_drops;
- };
- struct mbuf;
- struct proc;
- struct rtentry;
- struct socket;
- struct ether_header;
- /*
- * Structure defining statistics and other data kept regarding a network
- * interface.
- */
- struct if_data {
- /* generic interface information */
- u_char ifi_type; /* ethernet, tokenring, etc. */
- u_char ifi_addrlen; /* media address length */
- u_char ifi_hdrlen; /* media header length */
- u_long ifi_mtu; /* maximum transmission unit */
- u_long ifi_metric; /* routing metric (external only) */
- u_long ifi_baudrate; /* linespeed */
- /* volatile statistics */
- u_long ifi_ipackets; /* packets received on interface */
- u_long ifi_ierrors; /* input errors on interface */
- u_long ifi_opackets; /* packets sent on interface */
- u_long ifi_oerrors; /* output errors on interface */
- u_long ifi_collisions; /* collisions on csma interfaces */
- u_long ifi_ibytes; /* total number of octets received */
- u_long ifi_obytes; /* total number of octets sent */
- u_long ifi_imcasts; /* packets received via multicast */
- u_long ifi_omcasts; /* packets sent via multicast */
- u_long ifi_iqdrops; /* dropped on input, this interface */
- u_long ifi_noproto; /* destined for unsupported protocol */
- u_long ifi_lastchange; /* last updated */
- };
- /*
- * Structure defining a queue for a network interface.
- *
- * (Would like to call this struct ``if'', but C isn't PL/1.)
- */
- struct ifnet {
- char *if_name; /* name, e.g. ``en'' or ``lo'' */
- struct ifnet *if_next; /* all struct ifnets are chained */
- struct ifaddr *if_addrlist; /* linked list of addresses per if */
- int if_pcount; /* number of promiscuous listeners */
- caddr_t if_bpf; /* packet filter structure */
- u_short if_index; /* numeric abbreviation for this if */
- short if_unit; /* sub-unit for lower level driver */
- short if_timer; /* time 'til if_watchdog called */
- short if_flags; /* up/down, broadcast, etc. */
- struct if_data if_data; /* statistics and other data about if */
- struct mBlk * pInmMblk; /* chain of multicast addresses */
- int (*if_init)
- (int unit); /* init routine */
- int (*if_output) /* output routine */
- (struct ifnet *, struct mbuf *, struct sockaddr *,
- struct rtentry *);
- int (*if_start) /* initiate output routine */
- (struct ifnet *);
- int (*if_ioctl) /* ioctl routine */
- (struct ifnet *, int cmd, caddr_t data);
- int (*if_reset) /* bus reset routine */
- (int unit);
- int (*if_resolve)(); /* arp resolve at driver level */
- void (*if_watchdog) /* timer routine */
- (int unit);
- struct ifqueue if_snd; /* output queue */
- void * pCookie; /* data for IP over MUX attachment */
- #ifdef VIRTUAL_STACK
- int vsNum; /* virtual stack number */
- #endif
- };
- #define if_mtu if_data.ifi_mtu
- #define if_type if_data.ifi_type
- #define if_addrlen if_data.ifi_addrlen
- #define if_hdrlen if_data.ifi_hdrlen
- #define if_metric if_data.ifi_metric
- #define if_baudrate if_data.ifi_baudrate
- #define if_ipackets if_data.ifi_ipackets
- #define if_ierrors if_data.ifi_ierrors
- #define if_opackets if_data.ifi_opackets
- #define if_oerrors if_data.ifi_oerrors
- #define if_collisions if_data.ifi_collisions
- #define if_ibytes if_data.ifi_ibytes
- #define if_obytes if_data.ifi_obytes
- #define if_imcasts if_data.ifi_imcasts
- #define if_omcasts if_data.ifi_omcasts
- #define if_iqdrops if_data.ifi_iqdrops
- #define if_noproto if_data.ifi_noproto
- #define if_lastchange if_data.ifi_lastchange
- #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 */
- #define IFF_PROMISC 0x100 /* receive all packets */
- #define IFF_ALLMULTI 0x200 /* receive all multicast packets */
- #define IFF_OACTIVE 0x400 /* transmission in progress */
- #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */
- #define IFF_LINK0 0x1000 /* fastPath enabled */
- #define IFF_LINK1 0x2000 /* per link layer defined bit */
- #define IFF_LINK2 0x4000 /* per link layer defined bit */
- #define IFF_MULTICAST 0x8000 /* supports multicast */
- #define IFF_RFC2233 0x10000 /* supports RFC 2223 MIB */
- #define IFF_UNNUMBERED IFF_POINTOPOINT /* supports unnumbered interafaces */
- /* flags set internally only: */
- #define IFF_CANTCHANGE
- (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|
- IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI)
- #define IFF_FP_ENABLE IFF_LINK0 /* fastpath enabled */
- /*
- * 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_nextpkt = 0;
- if ((ifq)->ifq_tail == 0)
- (ifq)->ifq_head = m;
- else
- (ifq)->ifq_tail->m_nextpkt = m;
- (ifq)->ifq_tail = m;
- (ifq)->ifq_len++;
- }
- #define IF_PREPEND(ifq, m) {
- (m)->m_nextpkt = (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;
- }
- }
- #if CPU_FAMILY==SH /* Changed at OCt-20-94 byS.Awai */
- #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) = (struct ifnet *)(
- (*((u_short *)((int)(m)+(m)->m_off+0)) << 16) |
- (*((u_short *)((int)(m)+(m)->m_off+2)) ) );
- IF_ADJ(m);
- }
- }
- #else /* orig */
- #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);
- }
- }
- #endif
- #define IF_DEQUEUE(ifq, m) {
- (m) = (ifq)->ifq_head;
- if (m) {
- if (((ifq)->ifq_head = (m)->m_nextpkt) == 0)
- (ifq)->ifq_tail = 0;
- (m)->m_nextpkt = 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 */
- struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
- #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
- struct sockaddr *ifa_netmask; /* used to determine subnet */
- struct ifnet *ifa_ifp; /* back-pointer to interface */
- struct ifaddr *ifa_next; /* next address for interface */
- void (*ifa_rtrequest)(); /* check or clean routes (+ or -)'d */
- u_short ifa_flags; /* mostly rt_flags for cloning */
- short ifa_refcnt; /* count of references */
- int ifa_metric; /* cost of going out this interface */
- };
- #define IFA_ROUTE RTF_UP /* route installed */
- /*
- * Message format for use in obtaining information about interfaces
- * from sysctl and the routing socket.
- */
- struct if_msghdr {
- u_short ifm_msglen; /* to skip over non-understood messages */
- u_char ifm_version; /* future binary compatability */
- u_char ifm_type; /* message type */
- int ifm_addrs; /* like rtm_addrs */
- int ifm_flags; /* value of if_flags */
- u_short ifm_index; /* index for associated ifp */
- struct if_data ifm_data;/* statistics and other data about if */
- };
- /*
- * Message format for use in obtaining information about interface addresses
- * from sysctl and the routing socket.
- */
- struct ifa_msghdr {
- u_short ifam_msglen; /* to skip over non-understood messages */
- u_char ifam_version; /* future binary compatability */
- u_char ifam_type; /* message type */
- int ifam_addrs; /* like rtm_addrs */
- int ifam_flags; /* value of ifa_flags */
- u_short ifam_index; /* index for associated ifp */
- int ifam_metric; /* value of ifa_metric */
- };
- /*
- * 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 */
- };
- struct ifaliasreq {
- char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
- struct sockaddr ifra_addr;
- struct sockaddr ifra_broadaddr;
- struct sockaddr ifra_mask;
- };
- /*
- * Interface request structure used for getting
- * the multicast table from a driver.
- */
- struct ifmreq {
- #define IFNAMSIZ 16
- char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
- int ifr_tableLen;
- char *ifr_table;
- };
- /*
- * 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 */
- };
- /*
- * Structure used in SIOCGMTU request.
- * Used to retrieve the MTU for point-to-multipoint devices.
- */
- typedef struct mtuQuery_t
- {
- UCHAR family;
- UINT32 dstIpAddr;
- UINT32 mtu;
- } MTU_QUERY;
- #define IFAFREE(ifa)
- if ((ifa)->ifa_refcnt <= 0)
- ifafree(ifa);
- else
- (ifa)->ifa_refcnt--;
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 0 /* turn off alignment requirement */
- #endif /* CPU_FAMILY==I960 */
- extern struct ifnet * ifnet; /* declared in if.c */
- extern struct ifqueue rawintrq; /* raw packet input queue */
- extern STATUS if_attach (struct ifnet *);
- extern void if_down (struct ifnet *);
- extern void if_qflush (struct ifqueue *);
- #ifndef VIRTUAL_STACK
- extern void if_slowtimo (void);
- #else
- extern void if_slowtimo (int stackNum);
- #endif /* VIRTUAL_STACK */
- extern void if_up (struct ifnet *);
- extern int ifconf (int, caddr_t);
- extern void ifinit (void);
- extern int ifioctl (struct socket *, u_long, caddr_t);
- extern int ifpromisc (struct ifnet *, int);
- extern struct ifaddr * ifa_ifwithaddr (struct sockaddr *);
- extern struct ifaddr * ifa_ifwithaf (int);
- extern struct ifaddr * ifa_ifwithdstaddr (struct sockaddr *);
- extern struct ifaddr * ifa_ifwithnet (struct sockaddr *);
- extern struct ifaddr * ifaof_ifpforaddr (struct sockaddr *, struct ifnet *);
- extern struct ifaddr * ifa_ifwithroute(int, struct sockaddr *,
- struct sockaddr*);
- extern void ifafree (struct ifaddr *);
- extern void link_rtrequest (int, struct rtentry *,
- struct sockaddr *);
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCifh */