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- /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
- /*
- * 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.
- *
- * From: @(#)if.h 8.1 (Berkeley) 6/10/93
- */
-
- #ifndef _NET_IF_VAR_H_
- #define _NET_IF_VAR_H_
-
- #define APPLE_IF_FAM_LOOPBACK 1
- #define APPLE_IF_FAM_ETHERNET 2
- #define APPLE_IF_FAM_SLIP 3
- #define APPLE_IF_FAM_TUN 4
- #define APPLE_IF_FAM_VLAN 5
- #define APPLE_IF_FAM_PPP 6
- #define APPLE_IF_FAM_PVC 7
- #define APPLE_IF_FAM_DISC 8
- #define APPLE_IF_FAM_MDECAP 9
- #define APPLE_IF_FAM_GIF 10
- #define APPLE_IF_FAM_FAITH 11
-
-
- /*
- * 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, rt)
- * 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
- */
-
- #ifdef __STDC__
- /*
- * Forward structure declarations for function prototypes [sic].
- */
- struct mbuf;
- struct proc;
- struct rtentry;
- struct socket;
- struct sockaddr_dl;
- #endif
-
- #define IFNAMSIZ 16
-
- #include <sys/queue.h> /* get TAILQ macros */
-
- struct tqdummy {
- };
-
- TAILQ_HEAD(tailq_head, tqdummy);
-
-
- /* This belongs up in socket.h or socketvar.h, depending on how far the
- * event bubbles up.
- */
-
- struct net_event_data {
- u_long if_family;
- u_long if_unit;
- char if_name[IFNAMSIZ];
- };
-
-
-
- TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */
- TAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */
- LIST_HEAD(ifmultihead, ifmultiaddr);
-
-
- /*
- * Structure describing information about an interface
- * which may be of interest to management entities.
- */
- struct if_data {
- /* generic interface information */
- u_char ifi_type; /* ethernet, tokenring, etc */
- u_char ifi_typelen; /* Length of frame type id */
- u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */
- u_char ifi_addrlen; /* media address length */
- u_char ifi_hdrlen; /* media header length */
- u_char ifi_recvquota; /* polling quota for receive intrs */
- u_char ifi_xmitquota; /* polling quota for xmit intrs */
- 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_recvtiming; /* usec spent receiving when timing */
- u_long ifi_xmittiming; /* usec spent xmitting when timing */
- struct timeval ifi_lastchange; /* time of last administrative change */
- u_long default_proto; /* Default dl_tag when none is specified
- * on dlil_output */
- u_long ifi_hwassist; /* HW offload capabilities */
- u_long ifi_reserved1; /* for future use */
- u_long ifi_reserved2; /* for future use */
- };
-
-
- /*
- * Structure defining a queue for a network interface.
- */
- struct ifqueue {
- struct mbuf *ifq_head;
- struct mbuf *ifq_tail;
- int ifq_len;
- int ifq_maxlen;
- int ifq_drops;
- };
-
- /*
- * Structure defining a network interface.
- *
- * (Would like to call this struct ``if'', but C isn't PL/1.)
- */
- struct ifnet {
- void *if_softc; /* pointer to driver state */
- char *if_name; /* name, e.g. ``en'' or ``lo'' */
- TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */
- struct ifaddrhead if_addrhead; /* linked list of addresses per if */
- struct tailq_head proto_head; /* Head for if_proto structures */
- int if_pcount; /* number of promiscuous listeners */
- struct bpf_if *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. */
- int if_ipending; /* interrupts pending */
- void *if_linkmib; /* link-type-specific MIB data */
- size_t if_linkmiblen; /* length of above data */
- struct if_data if_data;
-
- /* New with DLIL */
- int refcnt;
- int offercnt;
- int (*if_output)(struct ifnet *ifnet_ptr, struct mbuf *m);
- int (*if_ioctl)(struct ifnet *ifnet_ptr, u_long ioctl_code, void *ioctl_arg);
- int (*if_set_bpf_tap)(struct ifnet *ifp, int mode,
- int (*bpf_callback)(struct ifnet *, struct mbuf *));
- int (*if_free)(struct ifnet *ifnet_ptr);
- int (*if_demux)(struct ifnet *ifnet_ptr, struct mbuf *mbuf_ptr,
- char *frame_ptr, void *if_proto_ptr);
-
- int (*if_event)(struct ifnet *ifnet_ptr, caddr_t event_ptr);
-
- int (*if_framer)(struct ifnet *ifp,
- struct mbuf **m,
- struct sockaddr *dest,
- char *dest_linkaddr,
- char *frame_type);
-
- u_long if_family; /* ulong assigned by Apple */
- struct tailq_head if_flt_head;
-
- /* End DLIL specific */
-
- /* #if defined(ppc) */
- void *if_Y; /* For Y-adapter connection */
- /* #endif */
- void *if_private; /* private to interface */
- /* procedure handles */
- #if __APPLE__
- long if_eflags; /* autoaddr, autoaddr done, etc. */
- #else
- int (*if_done) /* output complete routine */
- __P((struct ifnet *)); /* (XXX not used; fake prototype) */
- #endif
-
-
- struct ifmultihead if_multiaddrs; /* multicast addresses configured */
- int if_amcount; /* number of all-multicast requests */
- /* procedure handles */
- int (*if_poll_recv) /* polled receive routine */
- __P((struct ifnet *, int *));
- int (*if_poll_xmit) /* polled transmit routine */
- __P((struct ifnet *, int *));
- void (*if_poll_intren) /* polled interrupt reenable routine */
- __P((struct ifnet *));
- void (*if_poll_slowinput) /* input routine for slow devices */
- __P((struct ifnet *, struct mbuf *));
- void (*if_init) /* Init routine */
- __P((void *));
- int (*if_resolvemulti) /* validate/resolve multicast */
- __P((struct ifnet *, struct sockaddr **, struct sockaddr *));
- struct ifqueue if_snd; /* output queue */
- struct ifqueue *if_poll_slowq; /* input queue for slow devices */
- u_long family_cookie;
- struct ifprefix *if_prefixlist; /* linked list of prefixes per if */
- void *reserved1; /* for future use */
- void *reserved2; /* for future use */
- };
- typedef void if_init_f_t __P((void *));
-
- #define if_mtu if_data.ifi_mtu
- #define if_type if_data.ifi_type
- #define if_typelen if_data.ifi_typelen
- #define if_physical if_data.ifi_physical
- #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_hwassist if_data.ifi_hwassist
- #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 if_recvquota if_data.ifi_recvquota
- #define if_xmitquota if_data.ifi_xmitquota
- #define if_rawoutput(if, m, sa) if_output(if, m, sa, (struct rtentry *)0)
-
- /*
- * Bit values in if_ipending
- */
- #define IFI_RECV 1 /* I want to receive */
- #define IFI_XMIT 2 /* I want to transmit */
-
- /*
- * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq)
- * are 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++; \
- }
- #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--; \
- } \
- }
-
- #ifdef KERNEL
- #define IF_ENQ_DROP(ifq, m) if_enq_drop(ifq, m)
-
- #if defined(__GNUC__) && defined(MT_HEADER)
- static __inline int
- if_queue_drop(struct ifqueue *ifq, struct mbuf *m)
- {
- IF_DROP(ifq);
- return 0;
- }
-
- static __inline int
- if_enq_drop(struct ifqueue *ifq, struct mbuf *m)
- {
- if (IF_QFULL(ifq) &&
- !if_queue_drop(ifq, m))
- return 0;
- IF_ENQUEUE(ifq, m);
- return 1;
- }
- #else
-
- #ifdef MT_HEADER
- int if_enq_drop __P((struct ifqueue *, struct mbuf *));
- #endif
-
- #endif
- #endif /* KERNEL */
-
- /*
- * 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 */
- TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */
- void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
- __P((int, struct rtentry *, struct sockaddr *));
- u_short ifa_flags; /* mostly rt_flags for cloning */
- short ifa_refcnt; /* references to this structure */
- int ifa_metric; /* cost of going out this interface */
- #ifdef notdef
- struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */
- #endif
- u_long ifa_dlt;
- int (*ifa_claim_addr) /* check if an addr goes to this if */
- __P((struct ifaddr *, struct sockaddr *));
-
- };
- #define IFA_ROUTE RTF_UP /* route installed */
-
- /*
- * The prefix structure contains information about one prefix
- * of an interface. They are maintained by the different address families,
- * are allocated and attached when an prefix or an address is set,
- * and are linked together so all prefixes for an interface can be located.
- */
- struct ifprefix {
- struct sockaddr *ifpr_prefix; /* prefix of interface */
- struct ifnet *ifpr_ifp; /* back-pointer to interface */
- struct ifprefix *ifpr_next;
- u_char ifpr_plen; /* prefix length in bits */
- u_char ifpr_type; /* protocol dependent prefix type */
- };
-
- /*
- * Multicast address structure. This is analogous to the ifaddr
- * structure except that it keeps track of multicast addresses.
- * Also, the reference count here is a count of requests for this
- * address, not a count of pointers to this structure.
- */
- struct ifmultiaddr {
- LIST_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
- struct sockaddr *ifma_addr; /* address this membership is for */
- struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
- struct ifnet *ifma_ifp; /* back-pointer to interface */
- u_int ifma_refcount; /* reference count */
- void *ifma_protospec; /* protocol-specific state, if any */
- };
-
- #if KERNEL
- #define IFAFREE(ifa) \
- do { \
- if ((ifa)->ifa_refcnt <= 0) \
- ifafree(ifa); \
- else \
- (ifa)->ifa_refcnt--; \
- } while (0)
-
- extern struct ifnethead ifnet;
- extern struct ifnet **ifindex2ifnet;
- extern int ifqmaxlen;
- extern struct ifnet loif[];
- extern int if_index;
- extern struct ifaddr **ifnet_addrs;
-
- int if_addmulti __P((struct ifnet *, struct sockaddr *,
- struct ifmultiaddr **));
- int if_allmulti __P((struct ifnet *, int));
- void if_attach __P((struct ifnet *));
- int if_delmulti __P((struct ifnet *, struct sockaddr *));
- void if_down __P((struct ifnet *));
- void if_route __P((struct ifnet *, int flag, int fam));
- void if_unroute __P((struct ifnet *, int flag, int fam));
- void if_up __P((struct ifnet *));
- /*void ifinit __P((void));*/ /* declared in systm.h for main() */
- int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *));
- int ifpromisc __P((struct ifnet *, int));
- struct ifnet *ifunit __P((char *));
- struct ifnet *if_withname __P((struct sockaddr *));
-
- int if_poll_recv_slow __P((struct ifnet *ifp, int *quotap));
- void if_poll_xmit_slow __P((struct ifnet *ifp, int *quotap));
- void if_poll_throttle __P((void));
- void if_poll_unthrottle __P((void *));
- void if_poll_init __P((void));
- void if_poll __P((void));
-
- struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *));
- struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *));
- struct ifaddr *ifa_ifwithnet __P((struct sockaddr *));
- struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *,
- struct sockaddr *));
- struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *));
- void ifafree __P((struct ifaddr *));
-
- struct ifmultiaddr *ifmaof_ifpforaddr __P((struct sockaddr *,
- struct ifnet *));
- int if_simloop __P((struct ifnet *ifp, struct mbuf *m,
- struct sockaddr *dst, int hlen));
-
- #endif /* KERNEL */
-
-
- #endif /* !_NET_IF_VAR_H_ */
-