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if.h revision 1.78
      1  1.78    itojun /*	$NetBSD: if.h,v 1.78 2002/05/27 13:46:45 itojun Exp $	*/
      2  1.44   thorpej 
      3  1.44   thorpej /*-
      4  1.70   thorpej  * Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
      5  1.44   thorpej  * All rights reserved.
      6  1.44   thorpej  *
      7  1.44   thorpej  * This code is derived from software contributed to The NetBSD Foundation
      8  1.44   thorpej  * by William Studnemund and Jason R. Thorpe.
      9  1.44   thorpej  *
     10  1.44   thorpej  * Redistribution and use in source and binary forms, with or without
     11  1.44   thorpej  * modification, are permitted provided that the following conditions
     12  1.44   thorpej  * are met:
     13  1.44   thorpej  * 1. Redistributions of source code must retain the above copyright
     14  1.44   thorpej  *    notice, this list of conditions and the following disclaimer.
     15  1.44   thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.44   thorpej  *    notice, this list of conditions and the following disclaimer in the
     17  1.44   thorpej  *    documentation and/or other materials provided with the distribution.
     18  1.44   thorpej  * 3. All advertising materials mentioning features or use of this software
     19  1.44   thorpej  *    must display the following acknowledgement:
     20  1.44   thorpej  *	This product includes software developed by the NetBSD
     21  1.44   thorpej  *	Foundation, Inc. and its contributors.
     22  1.44   thorpej  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  1.44   thorpej  *    contributors may be used to endorse or promote products derived
     24  1.44   thorpej  *    from this software without specific prior written permission.
     25  1.44   thorpej  *
     26  1.44   thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  1.44   thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  1.44   thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  1.44   thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  1.44   thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  1.44   thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  1.44   thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  1.44   thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  1.44   thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  1.44   thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  1.44   thorpej  * POSSIBILITY OF SUCH DAMAGE.
     37  1.44   thorpej  */
     38  1.10       cgd 
     39   1.1       cgd /*
     40   1.9   mycroft  * Copyright (c) 1982, 1986, 1989, 1993
     41   1.9   mycroft  *	The Regents of the University of California.  All rights reserved.
     42   1.1       cgd  *
     43   1.1       cgd  * Redistribution and use in source and binary forms, with or without
     44   1.1       cgd  * modification, are permitted provided that the following conditions
     45   1.1       cgd  * are met:
     46   1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     47   1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     48   1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     49   1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     50   1.1       cgd  *    documentation and/or other materials provided with the distribution.
     51   1.1       cgd  * 3. All advertising materials mentioning features or use of this software
     52   1.1       cgd  *    must display the following acknowledgement:
     53   1.1       cgd  *	This product includes software developed by the University of
     54   1.1       cgd  *	California, Berkeley and its contributors.
     55   1.1       cgd  * 4. Neither the name of the University nor the names of its contributors
     56   1.1       cgd  *    may be used to endorse or promote products derived from this software
     57   1.1       cgd  *    without specific prior written permission.
     58   1.1       cgd  *
     59   1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     60   1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     61   1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     62   1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     63   1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     64   1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     65   1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     66   1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     67   1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     68   1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     69   1.1       cgd  * SUCH DAMAGE.
     70   1.1       cgd  *
     71  1.30      fvdl  *	@(#)if.h	8.3 (Berkeley) 2/9/95
     72   1.1       cgd  */
     73   1.1       cgd 
     74  1.28     chuck #ifndef _NET_IF_H_
     75  1.28     chuck #define _NET_IF_H_
     76  1.28     chuck 
     77  1.38    kleink #if !defined(_XOPEN_SOURCE)
     78  1.38    kleink 
     79  1.17   mycroft #include <sys/queue.h>
     80  1.60   thorpej #include <net/dlt.h>
     81  1.67   thorpej #include <net/pfil.h>
     82  1.17   mycroft 
     83   1.1       cgd /*
     84  1.58   thorpej  * Always include ALTQ glue here -- we use the ALTQ interface queue
     85  1.58   thorpej  * structure even when ALTQ is not configured into the kernel so that
     86  1.58   thorpej  * the size of struct ifnet does not changed based on the option.  The
     87  1.58   thorpej  * ALTQ queue structure is API-compatible with the legacy ifqueue.
     88  1.58   thorpej  */
     89  1.58   thorpej #include <altq/if_altq.h>
     90  1.58   thorpej 
     91  1.58   thorpej /*
     92   1.1       cgd  * Structures defining a network interface, providing a packet
     93   1.1       cgd  * transport mechanism (ala level 0 of the PUP protocols).
     94   1.1       cgd  *
     95   1.1       cgd  * Each interface accepts output datagrams of a specified maximum
     96   1.1       cgd  * length, and provides higher level routines with input datagrams
     97   1.1       cgd  * received from its medium.
     98   1.1       cgd  *
     99   1.9   mycroft  * Output occurs when the routine if_output is called, with four parameters:
    100   1.9   mycroft  *	(*ifp->if_output)(ifp, m, dst, rt)
    101   1.1       cgd  * Here m is the mbuf chain to be sent and dst is the destination address.
    102   1.1       cgd  * The output routine encapsulates the supplied datagram if necessary,
    103   1.1       cgd  * and then transmits it on its medium.
    104   1.1       cgd  *
    105   1.1       cgd  * On input, each interface unwraps the data received by it, and either
    106   1.1       cgd  * places it on the input queue of a internetwork datagram routine
    107   1.1       cgd  * and posts the associated software interrupt, or passes the datagram to a raw
    108   1.1       cgd  * packet input routine.
    109   1.1       cgd  *
    110   1.1       cgd  * Routines exist for locating interfaces by their addresses
    111   1.1       cgd  * or for locating a interface on a certain network, as well as more general
    112   1.1       cgd  * routing and gateway routines maintaining information used to locate
    113   1.1       cgd  * interfaces.  These routines live in the files if.c and route.c
    114   1.1       cgd  */
    115   1.7   mycroft /*  XXX fast fix for SNMP, going away soon */
    116   1.1       cgd #include <sys/time.h>
    117   1.1       cgd 
    118  1.69       mrg #if defined(_KERNEL_OPT)
    119  1.42    bouyer #include "opt_compat_netbsd.h"
    120  1.42    bouyer #endif
    121  1.42    bouyer 
    122   1.9   mycroft struct mbuf;
    123   1.9   mycroft struct proc;
    124   1.9   mycroft struct rtentry;
    125   1.9   mycroft struct socket;
    126   1.9   mycroft struct ether_header;
    127  1.51   thorpej struct ifnet;
    128  1.65    itojun struct rt_addrinfo;
    129  1.51   thorpej 
    130  1.51   thorpej /*
    131  1.53   thorpej  * Length of interface external name, including terminating '\0'.
    132  1.53   thorpej  * Note: this is the same size as a generic device's external name.
    133  1.53   thorpej  */
    134  1.53   thorpej #define	IFNAMSIZ	16
    135  1.53   thorpej #define	IF_NAMESIZE	IFNAMSIZ
    136  1.53   thorpej 
    137  1.53   thorpej /*
    138  1.51   thorpej  * Structure describing a `cloning' interface.
    139  1.51   thorpej  */
    140  1.51   thorpej struct if_clone {
    141  1.51   thorpej 	LIST_ENTRY(if_clone) ifc_list;	/* on list of cloners */
    142  1.51   thorpej 	const char *ifc_name;		/* name of device, e.g. `gif' */
    143  1.51   thorpej 	size_t ifc_namelen;		/* length of name */
    144  1.51   thorpej 
    145  1.51   thorpej 	int	(*ifc_create)(struct if_clone *, int);
    146  1.51   thorpej 	void	(*ifc_destroy)(struct ifnet *);
    147  1.51   thorpej };
    148  1.51   thorpej 
    149  1.51   thorpej #define	IF_CLONE_INITIALIZER(name, create, destroy)			\
    150  1.51   thorpej 	{ { 0 }, name, sizeof(name) - 1, create, destroy }
    151   1.9   mycroft 
    152   1.1       cgd /*
    153  1.53   thorpej  * Structure used to query names of interface cloners.
    154  1.53   thorpej  */
    155  1.53   thorpej struct if_clonereq {
    156  1.53   thorpej 	int	ifcr_total;		/* total cloners (out) */
    157  1.53   thorpej 	int	ifcr_count;		/* room for this many in user buffer */
    158  1.53   thorpej 	char	*ifcr_buffer;		/* buffer for cloner names */
    159  1.53   thorpej };
    160  1.53   thorpej 
    161  1.53   thorpej /*
    162  1.12       cgd  * Structure defining statistics and other data kept regarding a network
    163  1.12       cgd  * interface.
    164  1.12       cgd  */
    165  1.46   thorpej struct if_data {
    166  1.12       cgd 	/* generic interface information */
    167  1.12       cgd 	u_char	ifi_type;		/* ethernet, tokenring, etc. */
    168  1.12       cgd 	u_char	ifi_addrlen;		/* media address length */
    169  1.12       cgd 	u_char	ifi_hdrlen;		/* media header length */
    170  1.46   thorpej 	int	ifi_link_state;		/* current link state */
    171  1.42    bouyer 	u_quad_t ifi_mtu;		/* maximum transmission unit */
    172  1.42    bouyer 	u_quad_t ifi_metric;		/* routing metric (external only) */
    173  1.42    bouyer 	u_quad_t ifi_baudrate;		/* linespeed */
    174  1.42    bouyer 	/* volatile statistics */
    175  1.42    bouyer 	u_quad_t ifi_ipackets;		/* packets received on interface */
    176  1.42    bouyer 	u_quad_t ifi_ierrors;		/* input errors on interface */
    177  1.42    bouyer 	u_quad_t ifi_opackets;		/* packets sent on interface */
    178  1.42    bouyer 	u_quad_t ifi_oerrors;		/* output errors on interface */
    179  1.42    bouyer 	u_quad_t ifi_collisions;	/* collisions on csma interfaces */
    180  1.42    bouyer 	u_quad_t ifi_ibytes;		/* total number of octets received */
    181  1.42    bouyer 	u_quad_t ifi_obytes;		/* total number of octets sent */
    182  1.42    bouyer 	u_quad_t ifi_imcasts;		/* packets received via multicast */
    183  1.42    bouyer 	u_quad_t ifi_omcasts;		/* packets sent via multicast */
    184  1.42    bouyer 	u_quad_t ifi_iqdrops;		/* dropped on input, this interface */
    185  1.42    bouyer 	u_quad_t ifi_noproto;		/* destined for unsupported protocol */
    186  1.72    itojun 	struct	timeval ifi_lastchange;	/* last operational state change */
    187  1.42    bouyer };
    188  1.42    bouyer 
    189  1.46   thorpej /*
    190  1.46   thorpej  * Values for if_link_state.
    191  1.46   thorpej  */
    192  1.46   thorpej #define	LINK_STATE_UNKNOWN	0	/* link invalid/unknown */
    193  1.46   thorpej #define	LINK_STATE_DOWN		1	/* link is down */
    194  1.46   thorpej #define	LINK_STATE_UP		2	/* link is up */
    195  1.46   thorpej 
    196  1.45    kleink #if defined(_KERNEL) && defined(COMPAT_14)
    197  1.42    bouyer /* Pre-1.5 if_data struct */
    198  1.46   thorpej struct if_data14 {
    199  1.42    bouyer 	/* generic interface information */
    200  1.42    bouyer 	u_char	ifi_type;		/* ethernet, tokenring, etc. */
    201  1.42    bouyer 	u_char	ifi_addrlen;		/* media address length */
    202  1.42    bouyer 	u_char	ifi_hdrlen;		/* media header length */
    203  1.12       cgd 	u_long	ifi_mtu;		/* maximum transmission unit */
    204  1.12       cgd 	u_long	ifi_metric;		/* routing metric (external only) */
    205  1.12       cgd 	u_long	ifi_baudrate;		/* linespeed */
    206  1.12       cgd 	/* volatile statistics */
    207  1.12       cgd 	u_long	ifi_ipackets;		/* packets received on interface */
    208  1.12       cgd 	u_long	ifi_ierrors;		/* input errors on interface */
    209  1.12       cgd 	u_long	ifi_opackets;		/* packets sent on interface */
    210  1.12       cgd 	u_long	ifi_oerrors;		/* output errors on interface */
    211  1.12       cgd 	u_long	ifi_collisions;		/* collisions on csma interfaces */
    212  1.12       cgd 	u_long	ifi_ibytes;		/* total number of octets received */
    213  1.12       cgd 	u_long	ifi_obytes;		/* total number of octets sent */
    214  1.12       cgd 	u_long	ifi_imcasts;		/* packets received via multicast */
    215  1.12       cgd 	u_long	ifi_omcasts;		/* packets sent via multicast */
    216  1.12       cgd 	u_long	ifi_iqdrops;		/* dropped on input, this interface */
    217  1.12       cgd 	u_long	ifi_noproto;		/* destined for unsupported protocol */
    218  1.73    itojun 	struct	timeval ifi_lastchange;	/* last operational state change */
    219  1.12       cgd };
    220  1.45    kleink #endif /* _KERNEL && COMPAT_14 */
    221  1.12       cgd 
    222  1.12       cgd /*
    223   1.1       cgd  * Structure defining a queue for a network interface.
    224  1.55   thorpej  */
    225  1.55   thorpej struct ifqueue {
    226  1.55   thorpej 	struct	mbuf *ifq_head;
    227  1.55   thorpej 	struct	mbuf *ifq_tail;
    228  1.55   thorpej 	int	ifq_len;
    229  1.55   thorpej 	int	ifq_maxlen;
    230  1.55   thorpej 	int	ifq_drops;
    231  1.55   thorpej };
    232  1.55   thorpej 
    233  1.55   thorpej /*
    234  1.55   thorpej  * Structure defining a queue for a network interface.
    235   1.1       cgd  *
    236   1.1       cgd  * (Would like to call this struct ``if'', but C isn't PL/1.)
    237   1.1       cgd  */
    238  1.19       cgd TAILQ_HEAD(ifnet_head, ifnet);		/* the actual queue head */
    239  1.23   thorpej 
    240  1.19       cgd struct ifnet {				/* and the entries */
    241  1.23   thorpej 	void	*if_softc;		/* lower-level data for this if */
    242  1.17   mycroft 	TAILQ_ENTRY(ifnet) if_list;	/* all struct ifnets are chained */
    243  1.17   mycroft 	TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */
    244  1.23   thorpej 	char	if_xname[IFNAMSIZ];	/* external name (name + unit) */
    245   1.9   mycroft 	int	if_pcount;		/* number of promiscuous listeners */
    246   1.9   mycroft 	caddr_t	if_bpf;			/* packet filter structure */
    247   1.9   mycroft 	u_short	if_index;		/* numeric abbreviation for this if */
    248   1.9   mycroft 	short	if_timer;		/* time 'til if_watchdog called */
    249   1.1       cgd 	short	if_flags;		/* up/down, broadcast, etc. */
    250  1.25       gwr 	short	if__pad1;		/* be nice to m68k ports */
    251  1.12       cgd 	struct	if_data if_data;	/* statistics and other data about if */
    252  1.44   thorpej 	/*
    253  1.44   thorpej 	 * Procedure handles.  If you add more of these, don't forget the
    254  1.44   thorpej 	 * corresponding NULL stub in if.c.
    255  1.44   thorpej 	 */
    256   1.9   mycroft 	int	(*if_output)		/* output routine (enqueue) */
    257   1.9   mycroft 		__P((struct ifnet *, struct mbuf *, struct sockaddr *,
    258   1.9   mycroft 		     struct rtentry *));
    259  1.36   thorpej 	void	(*if_input)		/* input routine (from h/w driver) */
    260  1.36   thorpej 		__P((struct ifnet *, struct mbuf *));
    261  1.16   mycroft 	void	(*if_start)		/* initiate output routine */
    262   1.9   mycroft 		__P((struct ifnet *));
    263   1.9   mycroft 	int	(*if_ioctl)		/* ioctl routine */
    264  1.13       cgd 		__P((struct ifnet *, u_long, caddr_t));
    265  1.54   thorpej 	int	(*if_init)		/* init routine */
    266  1.23   thorpej 		__P((struct ifnet *));
    267  1.54   thorpej 	void	(*if_stop)		/* stop routine */
    268  1.54   thorpej 		__P((struct ifnet *, int));
    269  1.16   mycroft 	void	(*if_watchdog)		/* timer routine */
    270  1.32      matt 		__P((struct ifnet *));
    271  1.32      matt 	void	(*if_drain)		/* routine to release resources */
    272  1.23   thorpej 		__P((struct ifnet *));
    273  1.55   thorpej 	struct ifaltq if_snd;		/* output queue (includes altq) */
    274  1.26        is 	struct	sockaddr_dl *if_sadl;	/* pointer to our sockaddr_dl */
    275  1.29        is 	u_int8_t *if_broadcastaddr;	/* linklevel broadcast bytestring */
    276  1.37    itojun 	struct ifprefix *if_prefixlist; /* linked list of prefixes per if */
    277  1.55   thorpej 	void	*if_bridge;		/* bridge glue */
    278  1.59   thorpej 	int	if_dlt;			/* data link type (<net/dlt.h>) */
    279  1.68     enami 	struct pfil_head if_pfil;	/* filtering point */
    280  1.70   thorpej 	uint64_t if_capabilities;	/* interface capabilities */
    281  1.70   thorpej 	uint64_t if_capenable;		/* capabilities enabled */
    282  1.70   thorpej 
    283  1.70   thorpej 	/*
    284  1.70   thorpej 	 * These are pre-computed based on an interfaces enabled
    285  1.70   thorpej 	 * capabilities, for speed elsewhere.
    286  1.70   thorpej 	 */
    287  1.74   thorpej 	int	if_csum_flags_tx;	/* M_CSUM_* flags for Tx */
    288  1.74   thorpej 	int	if_csum_flags_rx;	/* M_CSUM_* flags for Rx */
    289  1.77    itojun 
    290  1.77    itojun 	void	*if_afdata[AF_MAX];
    291   1.1       cgd };
    292   1.9   mycroft #define	if_mtu		if_data.ifi_mtu
    293   1.9   mycroft #define	if_type		if_data.ifi_type
    294   1.9   mycroft #define	if_addrlen	if_data.ifi_addrlen
    295   1.9   mycroft #define	if_hdrlen	if_data.ifi_hdrlen
    296   1.9   mycroft #define	if_metric	if_data.ifi_metric
    297  1.46   thorpej #define	if_link_state	if_data.ifi_link_state
    298   1.9   mycroft #define	if_baudrate	if_data.ifi_baudrate
    299   1.9   mycroft #define	if_ipackets	if_data.ifi_ipackets
    300   1.9   mycroft #define	if_ierrors	if_data.ifi_ierrors
    301   1.9   mycroft #define	if_opackets	if_data.ifi_opackets
    302   1.9   mycroft #define	if_oerrors	if_data.ifi_oerrors
    303   1.9   mycroft #define	if_collisions	if_data.ifi_collisions
    304   1.9   mycroft #define	if_ibytes	if_data.ifi_ibytes
    305   1.9   mycroft #define	if_obytes	if_data.ifi_obytes
    306   1.9   mycroft #define	if_imcasts	if_data.ifi_imcasts
    307   1.9   mycroft #define	if_omcasts	if_data.ifi_omcasts
    308   1.9   mycroft #define	if_iqdrops	if_data.ifi_iqdrops
    309   1.9   mycroft #define	if_noproto	if_data.ifi_noproto
    310   1.9   mycroft #define	if_lastchange	if_data.ifi_lastchange
    311   1.1       cgd 
    312  1.70   thorpej #define	IFF_UP		0x0001		/* interface is up */
    313  1.70   thorpej #define	IFF_BROADCAST	0x0002		/* broadcast address valid */
    314  1.70   thorpej #define	IFF_DEBUG	0x0004		/* turn on debugging */
    315  1.70   thorpej #define	IFF_LOOPBACK	0x0008		/* is a loopback net */
    316  1.70   thorpej #define	IFF_POINTOPOINT	0x0010		/* interface is point-to-point link */
    317  1.70   thorpej #define	IFF_NOTRAILERS	0x0020		/* avoid use of trailers */
    318  1.70   thorpej #define	IFF_RUNNING	0x0040		/* resources allocated */
    319  1.70   thorpej #define	IFF_NOARP	0x0080		/* no address resolution protocol */
    320  1.70   thorpej #define	IFF_PROMISC	0x0100		/* receive all packets */
    321  1.70   thorpej #define	IFF_ALLMULTI	0x0200		/* receive all multicast packets */
    322  1.70   thorpej #define	IFF_OACTIVE	0x0400		/* transmission in progress */
    323  1.70   thorpej #define	IFF_SIMPLEX	0x0800		/* can't hear own transmissions */
    324   1.5       cgd #define	IFF_LINK0	0x1000		/* per link layer defined bit */
    325   1.6       cgd #define	IFF_LINK1	0x2000		/* per link layer defined bit */
    326   1.6       cgd #define	IFF_LINK2	0x4000		/* per link layer defined bit */
    327   1.9   mycroft #define	IFF_MULTICAST	0x8000		/* supports multicast */
    328   1.4   hpeyerl 
    329   1.1       cgd /* flags set internally only: */
    330   1.9   mycroft #define	IFF_CANTCHANGE \
    331   1.9   mycroft 	(IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
    332  1.52   thorpej 	    IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC)
    333   1.1       cgd 
    334   1.1       cgd /*
    335  1.46   thorpej  * Some convenience macros used for setting ifi_baudrate.
    336  1.46   thorpej  * XXX 1000 vs. 1024? --thorpej (at) netbsd.org
    337  1.46   thorpej  */
    338  1.46   thorpej #define	IF_Kbps(x)	((x) * 1000)		/* kilobits/sec. */
    339  1.46   thorpej #define	IF_Mbps(x)	(IF_Kbps((x) * 1000))	/* megabits/sec. */
    340  1.46   thorpej #define	IF_Gbps(x)	(IF_Mbps((x) * 1000))	/* gigabits/sec. */
    341  1.46   thorpej 
    342  1.70   thorpej /* Capabilities that interfaces can advertise. */
    343  1.70   thorpej #define	IFCAP_CSUM_IPv4		0x0001	/* can do IPv4 header checksums */
    344  1.70   thorpej #define	IFCAP_CSUM_TCPv4	0x0002	/* can do IPv4/TCP checksums */
    345  1.70   thorpej #define	IFCAP_CSUM_UDPv4	0x0004	/* can do IPv4/UDP checksums */
    346  1.70   thorpej #define	IFCAP_CSUM_TCPv6	0x0008	/* can do IPv6/TCP checksums */
    347  1.70   thorpej #define	IFCAP_CSUM_UDPv6	0x0010	/* can do IPv6/UDP checksums */
    348  1.74   thorpej #define	IFCAP_CSUM_TCPv4_Rx	0x0020	/* can do IPv4/TCP (Rx only) */
    349  1.74   thorpej #define	IFCAP_CSUM_UDPv4_Rx	0x0040	/* can do IPv4/UDP (Rx only) */
    350  1.70   thorpej 
    351  1.46   thorpej /*
    352   1.1       cgd  * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)
    353   1.1       cgd  * input routines have queues of messages stored on ifqueue structures
    354   1.1       cgd  * (defined above).  Entries are added to and deleted from these structures
    355   1.1       cgd  * by these macros, which should be called with ipl raised to splimp().
    356   1.1       cgd  */
    357   1.1       cgd #define	IF_QFULL(ifq)		((ifq)->ifq_len >= (ifq)->ifq_maxlen)
    358   1.1       cgd #define	IF_DROP(ifq)		((ifq)->ifq_drops++)
    359   1.1       cgd #define	IF_ENQUEUE(ifq, m) { \
    360   1.1       cgd 	(m)->m_nextpkt = 0; \
    361   1.1       cgd 	if ((ifq)->ifq_tail == 0) \
    362   1.1       cgd 		(ifq)->ifq_head = m; \
    363   1.1       cgd 	else \
    364   1.1       cgd 		(ifq)->ifq_tail->m_nextpkt = m; \
    365   1.1       cgd 	(ifq)->ifq_tail = m; \
    366   1.1       cgd 	(ifq)->ifq_len++; \
    367   1.1       cgd }
    368   1.1       cgd #define	IF_PREPEND(ifq, m) { \
    369   1.1       cgd 	(m)->m_nextpkt = (ifq)->ifq_head; \
    370   1.1       cgd 	if ((ifq)->ifq_tail == 0) \
    371   1.1       cgd 		(ifq)->ifq_tail = (m); \
    372   1.1       cgd 	(ifq)->ifq_head = (m); \
    373   1.1       cgd 	(ifq)->ifq_len++; \
    374   1.1       cgd }
    375   1.1       cgd #define	IF_DEQUEUE(ifq, m) { \
    376   1.1       cgd 	(m) = (ifq)->ifq_head; \
    377   1.1       cgd 	if (m) { \
    378   1.1       cgd 		if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \
    379   1.1       cgd 			(ifq)->ifq_tail = 0; \
    380   1.1       cgd 		(m)->m_nextpkt = 0; \
    381   1.1       cgd 		(ifq)->ifq_len--; \
    382   1.1       cgd 	} \
    383   1.1       cgd }
    384  1.55   thorpej #define	IF_POLL(ifq, m)		((m) = (ifq)->ifq_head)
    385  1.55   thorpej #define	IF_PURGE(ifq)							\
    386  1.55   thorpej do {									\
    387  1.55   thorpej 	struct mbuf *__m0;						\
    388  1.57   thorpej 									\
    389  1.57   thorpej 	for (;;) {							\
    390  1.57   thorpej 		IF_DEQUEUE((ifq), __m0);				\
    391  1.57   thorpej 		if (__m0 == NULL)					\
    392  1.57   thorpej 			break;						\
    393  1.57   thorpej 		else							\
    394  1.57   thorpej 			m_freem(__m0);					\
    395  1.57   thorpej 	}								\
    396  1.55   thorpej } while (0)
    397  1.55   thorpej #define	IF_IS_EMPTY(ifq)	((ifq)->ifq_len == 0)
    398   1.1       cgd 
    399   1.1       cgd #define	IFQ_MAXLEN	50
    400   1.1       cgd #define	IFNET_SLOWHZ	1		/* granularity is 1 second */
    401   1.1       cgd 
    402   1.1       cgd /*
    403  1.35     aidan  * Structure defining statistics and other data kept regarding an address
    404  1.35     aidan  * on a network interface.
    405  1.35     aidan  */
    406  1.35     aidan struct ifaddr_data {
    407  1.35     aidan 	int64_t	ifad_inbytes;
    408  1.35     aidan 	int64_t	ifad_outbytes;
    409  1.35     aidan };
    410  1.35     aidan 
    411  1.35     aidan /*
    412   1.1       cgd  * The ifaddr structure contains information about one address
    413   1.1       cgd  * of an interface.  They are maintained by the different address families,
    414   1.1       cgd  * are allocated and attached when an address is set, and are linked
    415   1.1       cgd  * together so all addresses for an interface can be located.
    416   1.1       cgd  */
    417   1.1       cgd struct ifaddr {
    418   1.1       cgd 	struct	sockaddr *ifa_addr;	/* address of interface */
    419   1.1       cgd 	struct	sockaddr *ifa_dstaddr;	/* other end of p-to-p link */
    420   1.1       cgd #define	ifa_broadaddr	ifa_dstaddr	/* broadcast address interface */
    421   1.1       cgd 	struct	sockaddr *ifa_netmask;	/* used to determine subnet */
    422   1.1       cgd 	struct	ifnet *ifa_ifp;		/* back-pointer to interface */
    423  1.17   mycroft 	TAILQ_ENTRY(ifaddr) ifa_list;	/* list of addresses for interface */
    424  1.35     aidan 	struct	ifaddr_data	ifa_data;	/* statistics on the address */
    425  1.20  christos 	void	(*ifa_rtrequest)	/* check or clean routes (+ or -)'d */
    426  1.64    itojun 		    __P((int, struct rtentry *, struct rt_addrinfo *));
    427  1.41  wrstuden 	u_int	ifa_flags;		/* mostly rt_flags for cloning */
    428  1.41  wrstuden 	int	ifa_refcnt;		/* count of references */
    429   1.9   mycroft 	int	ifa_metric;		/* cost of going out this interface */
    430   1.1       cgd };
    431  1.66   thorpej #define	IFA_ROUTE	RTF_UP /* 0x01 *//* route installed */
    432   1.9   mycroft 
    433   1.9   mycroft /*
    434  1.37    itojun  * The prefix structure contains information about one prefix
    435  1.37    itojun  * of an interface.  They are maintained by the different address families,
    436  1.43    itojun  * are allocated and attached when an prefix or an address is set,
    437  1.37    itojun  * and are linked together so all prfefixes for an interface can be located.
    438  1.37    itojun  */
    439  1.37    itojun struct ifprefix {
    440  1.37    itojun 	struct	sockaddr *ifpr_prefix;	/* prefix of interface */
    441  1.37    itojun 	struct	ifnet *ifpr_ifp;	/* back-pointer to interface */
    442  1.37    itojun 	struct ifprefix *ifpr_next;
    443  1.37    itojun 	u_char	ifpr_plen;		/* prefix length in bits */
    444  1.43    itojun 	u_char	ifpr_type;		/* protocol dependent prefix type */
    445  1.37    itojun };
    446  1.37    itojun 
    447  1.37    itojun /*
    448   1.9   mycroft  * Message format for use in obtaining information about interfaces
    449   1.9   mycroft  * from sysctl and the routing socket.
    450   1.9   mycroft  */
    451   1.9   mycroft struct if_msghdr {
    452   1.9   mycroft 	u_short	ifm_msglen;	/* to skip over non-understood messages */
    453  1.71       wiz 	u_char	ifm_version;	/* future binary compatibility */
    454   1.9   mycroft 	u_char	ifm_type;	/* message type */
    455   1.9   mycroft 	int	ifm_addrs;	/* like rtm_addrs */
    456   1.9   mycroft 	int	ifm_flags;	/* value of if_flags */
    457   1.9   mycroft 	u_short	ifm_index;	/* index for associated ifp */
    458   1.9   mycroft 	struct	if_data ifm_data;/* statistics and other data about if */
    459   1.9   mycroft };
    460  1.42    bouyer 
    461  1.45    kleink #if defined(_KERNEL) && defined(COMPAT_14)
    462  1.42    bouyer /* pre-1.5 if_msghdr (ifm_data changed) */
    463  1.42    bouyer struct if_msghdr14 {
    464  1.42    bouyer 	u_short	ifm_msglen;	/* to skip over non-understood messages */
    465  1.71       wiz 	u_char	ifm_version;	/* future binary compatibility */
    466  1.42    bouyer 	u_char	ifm_type;	/* message type */
    467  1.42    bouyer 	int	ifm_addrs;	/* like rtm_addrs */
    468  1.42    bouyer 	int	ifm_flags;	/* value of if_flags */
    469  1.42    bouyer 	u_short	ifm_index;	/* index for associated ifp */
    470  1.42    bouyer 	struct	if_data14 ifm_data; /* statistics and other data about if */
    471  1.42    bouyer };
    472  1.45    kleink #endif /* _KERNEL && COMPAT_14 */
    473   1.9   mycroft 
    474   1.9   mycroft /*
    475   1.9   mycroft  * Message format for use in obtaining information about interface addresses
    476   1.9   mycroft  * from sysctl and the routing socket.
    477   1.9   mycroft  */
    478   1.9   mycroft struct ifa_msghdr {
    479   1.9   mycroft 	u_short	ifam_msglen;	/* to skip over non-understood messages */
    480  1.71       wiz 	u_char	ifam_version;	/* future binary compatibility */
    481   1.9   mycroft 	u_char	ifam_type;	/* message type */
    482   1.9   mycroft 	int	ifam_addrs;	/* like rtm_addrs */
    483   1.9   mycroft 	int	ifam_flags;	/* value of ifa_flags */
    484   1.9   mycroft 	u_short	ifam_index;	/* index for associated ifp */
    485   1.9   mycroft 	int	ifam_metric;	/* value of ifa_metric */
    486   1.9   mycroft };
    487  1.46   thorpej 
    488  1.46   thorpej /*
    489  1.46   thorpej  * Message format announcing the arrival or departure of a network interface.
    490  1.46   thorpej  */
    491  1.46   thorpej struct if_announcemsghdr {
    492  1.46   thorpej 	u_short	ifan_msglen;	/* to skip over non-understood messages */
    493  1.46   thorpej 	u_char	ifan_version;	/* future binary compatibility */
    494  1.46   thorpej 	u_char	ifan_type;	/* message type */
    495  1.46   thorpej 	u_short	ifan_index;	/* index for associated ifp */
    496  1.46   thorpej 	char	ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
    497  1.46   thorpej 	u_short	ifan_what;	/* what type of announcement */
    498  1.46   thorpej };
    499  1.46   thorpej 
    500  1.46   thorpej #define	IFAN_ARRIVAL	0	/* interface arrival */
    501  1.46   thorpej #define	IFAN_DEPARTURE	1	/* interface departure */
    502   1.9   mycroft 
    503   1.1       cgd /*
    504   1.1       cgd  * Interface request structure used for socket
    505   1.1       cgd  * ioctl's.  All interface ioctl's must have parameter
    506   1.1       cgd  * definitions which begin with ifr_name.  The
    507   1.1       cgd  * remainder may be interface specific.
    508   1.1       cgd  */
    509   1.1       cgd struct	ifreq {
    510   1.1       cgd 	char	ifr_name[IFNAMSIZ];		/* if name, e.g. "en0" */
    511   1.1       cgd 	union {
    512   1.1       cgd 		struct	sockaddr ifru_addr;
    513   1.1       cgd 		struct	sockaddr ifru_dstaddr;
    514   1.1       cgd 		struct	sockaddr ifru_broadaddr;
    515   1.1       cgd 		short	ifru_flags;
    516   1.1       cgd 		int	ifru_metric;
    517  1.24       cgd 		int	ifru_mtu;
    518  1.61   thorpej 		int	ifru_dlt;
    519  1.39      matt 		u_int	ifru_value;
    520   1.1       cgd 		caddr_t	ifru_data;
    521   1.1       cgd 	} ifr_ifru;
    522   1.1       cgd #define	ifr_addr	ifr_ifru.ifru_addr	/* address */
    523   1.1       cgd #define	ifr_dstaddr	ifr_ifru.ifru_dstaddr	/* other end of p-to-p link */
    524   1.1       cgd #define	ifr_broadaddr	ifr_ifru.ifru_broadaddr	/* broadcast address */
    525   1.1       cgd #define	ifr_flags	ifr_ifru.ifru_flags	/* flags */
    526   1.1       cgd #define	ifr_metric	ifr_ifru.ifru_metric	/* metric */
    527  1.24       cgd #define	ifr_mtu		ifr_ifru.ifru_mtu	/* mtu */
    528  1.61   thorpej #define	ifr_dlt		ifr_ifru.ifru_dlt	/* data link type (DLT_*) */
    529  1.39      matt #define	ifr_value	ifr_ifru.ifru_value	/* generic value */
    530  1.27   thorpej #define	ifr_media	ifr_ifru.ifru_metric	/* media options (overload) */
    531   1.1       cgd #define	ifr_data	ifr_ifru.ifru_data	/* for use by interface */
    532  1.70   thorpej };
    533  1.70   thorpej 
    534  1.70   thorpej struct ifcapreq {
    535  1.70   thorpej 	char		ifcr_name[IFNAMSIZ];	/* if name, e.g. "en0" */
    536  1.70   thorpej 	uint64_t	ifcr_capabilities;	/* supported capabiliites */
    537  1.70   thorpej 	uint64_t	ifcr_capenable;		/* capabilities enabled */
    538  1.50    itojun };
    539   1.1       cgd 
    540   1.1       cgd struct ifaliasreq {
    541   1.1       cgd 	char	ifra_name[IFNAMSIZ];		/* if name, e.g. "en0" */
    542   1.1       cgd 	struct	sockaddr ifra_addr;
    543  1.21        pk 	struct	sockaddr ifra_dstaddr;
    544  1.21        pk #define	ifra_broadaddr	ifra_dstaddr
    545   1.1       cgd 	struct	sockaddr ifra_mask;
    546  1.76      matt };
    547  1.76      matt 
    548  1.76      matt struct ifdatareq {
    549  1.76      matt 	char	ifdr_name[IFNAMSIZ];		/* if name, e.g. "en0" */
    550  1.76      matt 	struct	if_data ifdr_data;
    551  1.27   thorpej };
    552  1.27   thorpej 
    553  1.27   thorpej struct ifmediareq {
    554  1.27   thorpej 	char	ifm_name[IFNAMSIZ];		/* if name, e.g. "en0" */
    555  1.27   thorpej 	int	ifm_current;			/* current media options */
    556  1.27   thorpej 	int	ifm_mask;			/* don't care mask */
    557  1.27   thorpej 	int	ifm_status;			/* media status */
    558  1.27   thorpej 	int	ifm_active;			/* active options */
    559  1.27   thorpej 	int	ifm_count;			/* # entries in ifm_ulist
    560  1.27   thorpej 						   array */
    561  1.27   thorpej 	int	*ifm_ulist;			/* media words */
    562   1.1       cgd };
    563  1.31       kml 
    564  1.31       kml 
    565  1.31       kml struct  ifdrv {
    566  1.31       kml 	char		ifd_name[IFNAMSIZ];	/* if name, e.g. "en0" */
    567  1.31       kml 	unsigned long	ifd_cmd;
    568  1.31       kml 	size_t		ifd_len;
    569  1.31       kml 	void		*ifd_data;
    570  1.31       kml };
    571   1.1       cgd 
    572   1.1       cgd /*
    573   1.1       cgd  * Structure used in SIOCGIFCONF request.
    574   1.1       cgd  * Used to retrieve interface configuration
    575   1.1       cgd  * for machine (useful for programs which
    576   1.1       cgd  * must know all networks accessible).
    577   1.1       cgd  */
    578   1.1       cgd struct	ifconf {
    579   1.1       cgd 	int	ifc_len;		/* size of associated buffer */
    580   1.1       cgd 	union {
    581   1.1       cgd 		caddr_t	ifcu_buf;
    582   1.1       cgd 		struct	ifreq *ifcu_req;
    583   1.1       cgd 	} ifc_ifcu;
    584   1.1       cgd #define	ifc_buf	ifc_ifcu.ifcu_buf	/* buffer address */
    585   1.1       cgd #define	ifc_req	ifc_ifcu.ifcu_req	/* array of structures returned */
    586   1.1       cgd };
    587   1.1       cgd 
    588  1.37    itojun /*
    589  1.37    itojun  * Structure for SIOC[AGD]LIFADDR
    590  1.37    itojun  */
    591  1.37    itojun struct if_laddrreq {
    592  1.37    itojun 	char iflr_name[IFNAMSIZ];
    593  1.37    itojun 	unsigned int flags;
    594  1.37    itojun #define IFLR_PREFIX	0x8000	/* in: prefix given  out: kernel fills id */
    595  1.37    itojun 	unsigned int prefixlen;		/* in/out */
    596  1.37    itojun 	struct sockaddr_storage addr;	/* in/out */
    597  1.37    itojun 	struct sockaddr_storage dstaddr; /* out */
    598  1.37    itojun };
    599  1.37    itojun 
    600   1.9   mycroft #include <net/if_arp.h>
    601   1.9   mycroft 
    602  1.38    kleink #endif /* !_XOPEN_SOURCE */
    603  1.38    kleink 
    604  1.15       jtc #ifdef _KERNEL
    605  1.44   thorpej #ifdef IFAREF_DEBUG
    606  1.44   thorpej #define	IFAREF(ifa)							\
    607  1.44   thorpej do {									\
    608  1.44   thorpej 	printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__,		\
    609  1.44   thorpej 	    (ifa), ++(ifa)->ifa_refcnt);				\
    610  1.44   thorpej } while (0)
    611  1.44   thorpej 
    612  1.44   thorpej #define	IFAFREE(ifa)							\
    613  1.44   thorpej do {									\
    614  1.44   thorpej 	if ((ifa)->ifa_refcnt <= 0)					\
    615  1.44   thorpej 		panic("%s:%d: %p ifa_refcnt <= 0", __FILE__,		\
    616  1.44   thorpej 		    __LINE__, (ifa));					\
    617  1.44   thorpej 	printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__,		\
    618  1.44   thorpej 	    (ifa), --(ifa)->ifa_refcnt);				\
    619  1.44   thorpej 	if ((ifa)->ifa_refcnt == 0)					\
    620  1.44   thorpej 		ifafree(ifa);						\
    621  1.44   thorpej } while (0)
    622  1.44   thorpej #else
    623  1.44   thorpej #define	IFAREF(ifa)	(ifa)->ifa_refcnt++
    624  1.44   thorpej 
    625  1.44   thorpej #ifdef DIAGNOSTIC
    626  1.44   thorpej #define	IFAFREE(ifa)							\
    627  1.44   thorpej do {									\
    628  1.44   thorpej 	if ((ifa)->ifa_refcnt <= 0)					\
    629  1.44   thorpej 		panic("%s:%d: %p ifa_refcnt <= 0", __FILE__,		\
    630  1.44   thorpej 		    __LINE__, (ifa));					\
    631  1.44   thorpej 	if (--(ifa)->ifa_refcnt == 0)					\
    632  1.44   thorpej 		ifafree(ifa);						\
    633  1.44   thorpej } while (0)
    634  1.44   thorpej #else
    635  1.44   thorpej #define	IFAFREE(ifa)							\
    636  1.44   thorpej do {									\
    637  1.44   thorpej 	if (--(ifa)->ifa_refcnt == 0)					\
    638  1.44   thorpej 		ifafree(ifa);						\
    639  1.44   thorpej } while (0)
    640  1.44   thorpej #endif /* DIAGNOSTIC */
    641  1.44   thorpej #endif /* IFAREF_DEBUG */
    642  1.55   thorpej 
    643  1.55   thorpej #ifdef ALTQ
    644  1.55   thorpej #define	ALTQ_DECL(x)		x
    645  1.55   thorpej 
    646  1.55   thorpej #define IFQ_ENQUEUE(ifq, m, pattr, err)					\
    647  1.55   thorpej do {									\
    648  1.55   thorpej 	if (ALTQ_IS_ENABLED((ifq)))					\
    649  1.55   thorpej 		ALTQ_ENQUEUE((ifq), (m), (pattr), (err));		\
    650  1.55   thorpej 	else {								\
    651  1.55   thorpej 		if (IF_QFULL((ifq))) {					\
    652  1.55   thorpej 			m_freem((m));					\
    653  1.55   thorpej 			(err) = ENOBUFS;				\
    654  1.55   thorpej 		} else {						\
    655  1.55   thorpej 			IF_ENQUEUE((ifq), (m));				\
    656  1.55   thorpej 			(err) = 0;					\
    657  1.55   thorpej 		}							\
    658  1.55   thorpej 	}								\
    659  1.55   thorpej 	if ((err))							\
    660  1.55   thorpej 		(ifq)->ifq_drops++;					\
    661  1.55   thorpej } while (0)
    662  1.55   thorpej 
    663  1.55   thorpej #define IFQ_DEQUEUE(ifq, m)						\
    664  1.55   thorpej do {									\
    665  1.55   thorpej 	if (TBR_IS_ENABLED((ifq)))					\
    666  1.55   thorpej 		(m) = tbr_dequeue((ifq), ALTDQ_REMOVE);			\
    667  1.55   thorpej 	else if (ALTQ_IS_ENABLED((ifq)))				\
    668  1.55   thorpej 		ALTQ_DEQUEUE((ifq), (m));				\
    669  1.56   thorpej 	else								\
    670  1.62   thorpej 		IF_DEQUEUE((ifq), (m));					\
    671  1.56   thorpej } while (0)
    672  1.56   thorpej 
    673  1.56   thorpej #define	IFQ_POLL(ifq, m)						\
    674  1.56   thorpej do {									\
    675  1.56   thorpej 	if (TBR_IS_ENABLED((ifq)))					\
    676  1.56   thorpej 		(m) = tbr_dequeue((ifq), ALTDQ_POLL);			\
    677  1.56   thorpej 	else if (ALTQ_IS_ENABLED((ifq)))				\
    678  1.56   thorpej 		ALTQ_POLL((ifq), (m));					\
    679  1.55   thorpej 	else								\
    680  1.55   thorpej 		IF_POLL((ifq), (m));					\
    681  1.55   thorpej } while (0)
    682  1.55   thorpej 
    683  1.55   thorpej #define	IFQ_PURGE(ifq)							\
    684  1.55   thorpej do {									\
    685  1.55   thorpej 	if (ALTQ_IS_ENABLED((ifq)))					\
    686  1.55   thorpej 		ALTQ_PURGE((ifq));					\
    687  1.55   thorpej 	else								\
    688  1.55   thorpej 		IF_PURGE((ifq));					\
    689  1.55   thorpej } while (0)
    690  1.55   thorpej 
    691  1.55   thorpej #define	IFQ_SET_READY(ifq)						\
    692  1.55   thorpej do {									\
    693  1.55   thorpej 	(ifq)->altq_flags |= ALTQF_READY;				\
    694  1.55   thorpej } while (0)
    695  1.55   thorpej 
    696  1.55   thorpej #define	IFQ_CLASSIFY(ifq, m, af, pa)					\
    697  1.55   thorpej do {									\
    698  1.55   thorpej 	if (ALTQ_IS_ENABLED((ifq))) {					\
    699  1.55   thorpej 		if (ALTQ_NEEDS_CLASSIFY((ifq)))				\
    700  1.55   thorpej 			(pa)->pattr_class = (*(ifq)->altq_classify)	\
    701  1.55   thorpej 				((ifq)->altq_clfier, (m), (af));	\
    702  1.55   thorpej 		(pa)->pattr_af = (af);					\
    703  1.55   thorpej 		(pa)->pattr_hdr = mtod((m), caddr_t);			\
    704  1.55   thorpej 	}								\
    705  1.55   thorpej } while (0)
    706  1.55   thorpej #else /* ! ALTQ */
    707  1.55   thorpej #define	ALTQ_DECL(x)		/* nothing */
    708  1.55   thorpej 
    709  1.55   thorpej #define	IFQ_ENQUEUE(ifq, m, pattr, err)					\
    710  1.55   thorpej do {									\
    711  1.55   thorpej 	if (IF_QFULL((ifq))) {						\
    712  1.55   thorpej 		m_freem((m));						\
    713  1.55   thorpej 		(err) = ENOBUFS;					\
    714  1.55   thorpej 	} else {							\
    715  1.55   thorpej 		IF_ENQUEUE((ifq), (m));					\
    716  1.55   thorpej 		(err) = 0;						\
    717  1.55   thorpej 	}								\
    718  1.55   thorpej 	if ((err))							\
    719  1.55   thorpej 		(ifq)->ifq_drops++;					\
    720  1.55   thorpej } while (0)
    721  1.55   thorpej 
    722  1.55   thorpej #define	IFQ_DEQUEUE(ifq, m)	IF_DEQUEUE((ifq), (m))
    723  1.55   thorpej 
    724  1.55   thorpej #define	IFQ_POLL(ifq, m)	IF_POLL((ifq), (m))
    725  1.55   thorpej 
    726  1.55   thorpej #define	IFQ_PURGE(ifq)		IF_PURGE((ifq))
    727  1.55   thorpej 
    728  1.55   thorpej #define	IFQ_SET_READY(ifq)	/* nothing */
    729  1.55   thorpej 
    730  1.55   thorpej #define	IFQ_CLASSIFY(ifq, m, af, pa) /* nothing */
    731  1.55   thorpej 
    732  1.55   thorpej #endif /* ALTQ */
    733  1.55   thorpej 
    734  1.55   thorpej #define	IFQ_IS_EMPTY(ifq)		IF_IS_EMPTY((ifq))
    735  1.55   thorpej #define	IFQ_INC_LEN(ifq)		((ifq)->ifq_len++)
    736  1.55   thorpej #define	IFQ_DEC_LEN(ifq)		(--(ifq)->ifq_len)
    737  1.55   thorpej #define	IFQ_INC_DROPS(ifq)		((ifq)->ifq_drops++)
    738  1.55   thorpej #define	IFQ_SET_MAXLEN(ifq, len)	((ifq)->ifq_maxlen = (len))
    739   1.9   mycroft 
    740  1.75    simonb extern struct ifnet_head ifnet;
    741  1.48    simonb extern struct ifnet **ifindex2ifnet;
    742  1.37    itojun #if 0
    743  1.37    itojun struct ifnet loif[];
    744  1.37    itojun #endif
    745  1.48    simonb extern int if_index;
    746   1.2   mycroft 
    747  1.33   thorpej char	*ether_sprintf __P((const u_char *));
    748   1.9   mycroft 
    749  1.63   thorpej void	if_alloc_sadl __P((struct ifnet *));
    750  1.63   thorpej void	if_free_sadl __P((struct ifnet *));
    751   1.9   mycroft void	if_attach __P((struct ifnet *));
    752  1.78    itojun void	if_attachdomain __P((void));
    753  1.78    itojun void	if_attachdomain1 __P((struct ifnet *));
    754  1.44   thorpej void	if_deactivate __P((struct ifnet *));
    755  1.44   thorpej void	if_detach __P((struct ifnet *));
    756   1.9   mycroft void	if_down __P((struct ifnet *));
    757   1.9   mycroft void	if_slowtimo __P((void *));
    758   1.9   mycroft void	if_up __P((struct ifnet *));
    759  1.14       cgd int	ifconf __P((u_long, caddr_t));
    760   1.9   mycroft void	ifinit __P((void));
    761  1.13       cgd int	ifioctl __P((struct socket *, u_long, caddr_t, struct proc *));
    762   1.9   mycroft int	ifpromisc __P((struct ifnet *, int));
    763  1.40   thorpej struct	ifnet *ifunit __P((const char *));
    764   1.9   mycroft 
    765   1.9   mycroft struct	ifaddr *ifa_ifwithaddr __P((struct sockaddr *));
    766   1.9   mycroft struct	ifaddr *ifa_ifwithaf __P((int));
    767   1.9   mycroft struct	ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *));
    768   1.9   mycroft struct	ifaddr *ifa_ifwithnet __P((struct sockaddr *));
    769  1.22       mrg struct	ifaddr *ifa_ifwithladdr __P((struct sockaddr *));
    770   1.9   mycroft struct	ifaddr *ifa_ifwithroute __P((int, struct sockaddr *,
    771   1.9   mycroft 					struct sockaddr *));
    772   1.9   mycroft struct	ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *));
    773   1.9   mycroft void	ifafree __P((struct ifaddr *));
    774  1.64    itojun void	link_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *));
    775  1.51   thorpej 
    776  1.51   thorpej void	if_clone_attach __P((struct if_clone *));
    777  1.51   thorpej void	if_clone_detach __P((struct if_clone *));
    778  1.51   thorpej 
    779  1.51   thorpej int	if_clone_create __P((const char *));
    780  1.51   thorpej int	if_clone_destroy __P((const char *));
    781   1.9   mycroft 
    782  1.13       cgd int	loioctl __P((struct ifnet *, u_long, caddr_t));
    783   1.9   mycroft void	loopattach __P((int));
    784   1.9   mycroft int	looutput __P((struct ifnet *,
    785   1.9   mycroft 	   struct mbuf *, struct sockaddr *, struct rtentry *));
    786  1.64    itojun void	lortrequest __P((int, struct rtentry *, struct rt_addrinfo *));
    787  1.44   thorpej 
    788  1.44   thorpej /*
    789  1.44   thorpej  * These are exported because they're an easy way to tell if
    790  1.44   thorpej  * an interface is going away without having to burn a flag.
    791  1.44   thorpej  */
    792  1.44   thorpej int	if_nulloutput __P((struct ifnet *, struct mbuf *,
    793  1.44   thorpej 	    struct sockaddr *, struct rtentry *));
    794  1.44   thorpej void	if_nullinput __P((struct ifnet *, struct mbuf *));
    795  1.44   thorpej void	if_nullstart __P((struct ifnet *));
    796  1.44   thorpej int	if_nullioctl __P((struct ifnet *, u_long, caddr_t));
    797  1.54   thorpej int	if_nullinit __P((struct ifnet *));
    798  1.54   thorpej void	if_nullstop __P((struct ifnet *, int));
    799  1.44   thorpej void	if_nullwatchdog __P((struct ifnet *));
    800  1.44   thorpej void	if_nulldrain __P((struct ifnet *));
    801  1.37    itojun #else
    802  1.37    itojun struct if_nameindex {
    803  1.37    itojun 	unsigned int	if_index;	/* 1, 2, ... */
    804  1.37    itojun 	char		*if_name;	/* null terminated name: "le0", ... */
    805  1.37    itojun };
    806  1.37    itojun 
    807  1.38    kleink #include <sys/cdefs.h>
    808  1.37    itojun __BEGIN_DECLS
    809  1.37    itojun unsigned int if_nametoindex __P((const char *));
    810  1.38    kleink char *	if_indextoname __P((unsigned int, char *));
    811  1.38    kleink struct	if_nameindex * if_nameindex __P((void));
    812  1.38    kleink void	if_freenameindex __P((struct if_nameindex *));
    813  1.37    itojun __END_DECLS
    814  1.15       jtc #endif /* _KERNEL */
    815  1.28     chuck #endif /* !_NET_IF_H_ */
    816