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if.h revision 1.169
      1  1.169     ozaki /*	$NetBSD: if.h,v 1.169 2014/07/01 10:16:02 ozaki-r 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  1.106       agc  * by William Studenmund 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  *
     19   1.44   thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20   1.44   thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21   1.44   thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22   1.44   thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23   1.44   thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24   1.44   thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25   1.44   thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26   1.44   thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27   1.44   thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28   1.44   thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29   1.44   thorpej  * POSSIBILITY OF SUCH DAMAGE.
     30   1.44   thorpej  */
     31   1.10       cgd 
     32    1.1       cgd /*
     33    1.9   mycroft  * Copyright (c) 1982, 1986, 1989, 1993
     34    1.9   mycroft  *	The Regents of the University of California.  All rights reserved.
     35    1.1       cgd  *
     36    1.1       cgd  * Redistribution and use in source and binary forms, with or without
     37    1.1       cgd  * modification, are permitted provided that the following conditions
     38    1.1       cgd  * are met:
     39    1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     40    1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     41    1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     42    1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     43    1.1       cgd  *    documentation and/or other materials provided with the distribution.
     44   1.92       agc  * 3. Neither the name of the University nor the names of its contributors
     45    1.1       cgd  *    may be used to endorse or promote products derived from this software
     46    1.1       cgd  *    without specific prior written permission.
     47    1.1       cgd  *
     48    1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     49    1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     50    1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     51    1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     52    1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     53    1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     54    1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     55    1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     56    1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     57    1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     58    1.1       cgd  * SUCH DAMAGE.
     59    1.1       cgd  *
     60   1.30      fvdl  *	@(#)if.h	8.3 (Berkeley) 2/9/95
     61    1.1       cgd  */
     62    1.1       cgd 
     63   1.28     chuck #ifndef _NET_IF_H_
     64   1.28     chuck #define _NET_IF_H_
     65   1.28     chuck 
     66  1.152    dyoung #if !defined(_KERNEL) && !defined(_STANDALONE)
     67  1.152    dyoung #include <stdbool.h>
     68  1.152    dyoung #endif
     69  1.152    dyoung 
     70   1.87     bjh21 #include <sys/featuretest.h>
     71   1.88     bjh21 
     72   1.88     bjh21 /*
     73   1.88     bjh21  * Length of interface external name, including terminating '\0'.
     74   1.88     bjh21  * Note: this is the same size as a generic device's external name.
     75   1.88     bjh21  */
     76   1.88     bjh21 #define IF_NAMESIZE 16
     77   1.88     bjh21 
     78   1.87     bjh21 #if defined(_NETBSD_SOURCE)
     79   1.38    kleink 
     80   1.81     soren #include <sys/socket.h>
     81   1.17   mycroft #include <sys/queue.h>
     82  1.166     ozaki 
     83   1.60   thorpej #include <net/dlt.h>
     84   1.67   thorpej #include <net/pfil.h>
     85  1.167     ozaki #ifdef _KERNEL
     86  1.166     ozaki #include <net/pktqueue.h>
     87  1.167     ozaki #endif
     88   1.17   mycroft 
     89  1.169     ozaki //#define NET_MPSAFE 1
     90  1.169     ozaki 
     91    1.1       cgd /*
     92   1.58   thorpej  * Always include ALTQ glue here -- we use the ALTQ interface queue
     93   1.58   thorpej  * structure even when ALTQ is not configured into the kernel so that
     94   1.58   thorpej  * the size of struct ifnet does not changed based on the option.  The
     95   1.58   thorpej  * ALTQ queue structure is API-compatible with the legacy ifqueue.
     96   1.58   thorpej  */
     97   1.58   thorpej #include <altq/if_altq.h>
     98   1.58   thorpej 
     99   1.58   thorpej /*
    100    1.1       cgd  * Structures defining a network interface, providing a packet
    101    1.1       cgd  * transport mechanism (ala level 0 of the PUP protocols).
    102    1.1       cgd  *
    103    1.1       cgd  * Each interface accepts output datagrams of a specified maximum
    104    1.1       cgd  * length, and provides higher level routines with input datagrams
    105    1.1       cgd  * received from its medium.
    106    1.1       cgd  *
    107    1.9   mycroft  * Output occurs when the routine if_output is called, with four parameters:
    108    1.9   mycroft  *	(*ifp->if_output)(ifp, m, dst, rt)
    109    1.1       cgd  * Here m is the mbuf chain to be sent and dst is the destination address.
    110    1.1       cgd  * The output routine encapsulates the supplied datagram if necessary,
    111    1.1       cgd  * and then transmits it on its medium.
    112    1.1       cgd  *
    113    1.1       cgd  * On input, each interface unwraps the data received by it, and either
    114    1.1       cgd  * places it on the input queue of a internetwork datagram routine
    115    1.1       cgd  * and posts the associated software interrupt, or passes the datagram to a raw
    116    1.1       cgd  * packet input routine.
    117    1.1       cgd  *
    118    1.1       cgd  * Routines exist for locating interfaces by their addresses
    119    1.1       cgd  * or for locating a interface on a certain network, as well as more general
    120    1.1       cgd  * routing and gateway routines maintaining information used to locate
    121    1.1       cgd  * interfaces.  These routines live in the files if.c and route.c
    122    1.1       cgd  */
    123    1.1       cgd #include <sys/time.h>
    124    1.1       cgd 
    125   1.69       mrg #if defined(_KERNEL_OPT)
    126   1.42    bouyer #include "opt_compat_netbsd.h"
    127   1.42    bouyer #endif
    128   1.42    bouyer 
    129    1.9   mycroft struct mbuf;
    130    1.9   mycroft struct proc;
    131    1.9   mycroft struct rtentry;
    132    1.9   mycroft struct socket;
    133    1.9   mycroft struct ether_header;
    134  1.120    dyoung struct ifaddr;
    135   1.51   thorpej struct ifnet;
    136   1.65    itojun struct rt_addrinfo;
    137   1.51   thorpej 
    138   1.88     bjh21 #define	IFNAMSIZ	IF_NAMESIZE
    139   1.53   thorpej 
    140   1.53   thorpej /*
    141   1.51   thorpej  * Structure describing a `cloning' interface.
    142   1.51   thorpej  */
    143   1.51   thorpej struct if_clone {
    144   1.51   thorpej 	LIST_ENTRY(if_clone) ifc_list;	/* on list of cloners */
    145   1.51   thorpej 	const char *ifc_name;		/* name of device, e.g. `gif' */
    146   1.51   thorpej 	size_t ifc_namelen;		/* length of name */
    147   1.51   thorpej 
    148   1.51   thorpej 	int	(*ifc_create)(struct if_clone *, int);
    149   1.98     peter 	int	(*ifc_destroy)(struct ifnet *);
    150   1.51   thorpej };
    151   1.51   thorpej 
    152   1.51   thorpej #define	IF_CLONE_INITIALIZER(name, create, destroy)			\
    153  1.119  christos 	{ { NULL, NULL }, name, sizeof(name) - 1, create, destroy }
    154    1.9   mycroft 
    155    1.1       cgd /*
    156   1.53   thorpej  * Structure used to query names of interface cloners.
    157   1.53   thorpej  */
    158   1.53   thorpej struct if_clonereq {
    159   1.53   thorpej 	int	ifcr_total;		/* total cloners (out) */
    160   1.53   thorpej 	int	ifcr_count;		/* room for this many in user buffer */
    161   1.53   thorpej 	char	*ifcr_buffer;		/* buffer for cloner names */
    162   1.53   thorpej };
    163   1.53   thorpej 
    164   1.53   thorpej /*
    165   1.12       cgd  * Structure defining statistics and other data kept regarding a network
    166   1.12       cgd  * interface.
    167   1.12       cgd  */
    168   1.46   thorpej struct if_data {
    169   1.12       cgd 	/* generic interface information */
    170   1.12       cgd 	u_char	ifi_type;		/* ethernet, tokenring, etc. */
    171   1.12       cgd 	u_char	ifi_addrlen;		/* media address length */
    172   1.12       cgd 	u_char	ifi_hdrlen;		/* media header length */
    173   1.46   thorpej 	int	ifi_link_state;		/* current link state */
    174  1.145    dyoung 	uint64_t ifi_mtu;		/* maximum transmission unit */
    175  1.145    dyoung 	uint64_t ifi_metric;		/* routing metric (external only) */
    176  1.145    dyoung 	uint64_t ifi_baudrate;		/* linespeed */
    177   1.42    bouyer 	/* volatile statistics */
    178  1.145    dyoung 	uint64_t ifi_ipackets;		/* packets received on interface */
    179  1.145    dyoung 	uint64_t ifi_ierrors;		/* input errors on interface */
    180  1.145    dyoung 	uint64_t ifi_opackets;		/* packets sent on interface */
    181  1.145    dyoung 	uint64_t ifi_oerrors;		/* output errors on interface */
    182  1.145    dyoung 	uint64_t ifi_collisions;	/* collisions on csma interfaces */
    183  1.145    dyoung 	uint64_t ifi_ibytes;		/* total number of octets received */
    184  1.145    dyoung 	uint64_t ifi_obytes;		/* total number of octets sent */
    185  1.145    dyoung 	uint64_t ifi_imcasts;		/* packets received via multicast */
    186  1.145    dyoung 	uint64_t ifi_omcasts;		/* packets sent via multicast */
    187  1.145    dyoung 	uint64_t ifi_iqdrops;		/* dropped on input, this interface */
    188  1.145    dyoung 	uint64_t ifi_noproto;		/* destined for unsupported protocol */
    189  1.142  christos 	struct	timespec ifi_lastchange;/* last operational state change */
    190   1.42    bouyer };
    191   1.42    bouyer 
    192   1.46   thorpej /*
    193   1.46   thorpej  * Values for if_link_state.
    194   1.46   thorpej  */
    195   1.46   thorpej #define	LINK_STATE_UNKNOWN	0	/* link invalid/unknown */
    196   1.46   thorpej #define	LINK_STATE_DOWN		1	/* link is down */
    197   1.46   thorpej #define	LINK_STATE_UP		2	/* link is up */
    198   1.46   thorpej 
    199   1.12       cgd /*
    200    1.1       cgd  * Structure defining a queue for a network interface.
    201   1.55   thorpej  */
    202   1.55   thorpej struct ifqueue {
    203  1.169     ozaki 	struct		mbuf *ifq_head;
    204  1.169     ozaki 	struct		mbuf *ifq_tail;
    205  1.169     ozaki 	int		ifq_len;
    206  1.169     ozaki 	int		ifq_maxlen;
    207  1.169     ozaki 	int		ifq_drops;
    208  1.169     ozaki 	kmutex_t	*ifq_lock;
    209   1.55   thorpej };
    210   1.55   thorpej 
    211  1.153    dyoung struct ifnet_lock;
    212  1.153    dyoung 
    213  1.153    dyoung #ifdef _KERNEL
    214  1.153    dyoung #include <sys/mutex.h>
    215  1.153    dyoung #include <sys/condvar.h>
    216  1.153    dyoung #include <sys/percpu.h>
    217  1.153    dyoung 
    218  1.153    dyoung struct ifnet_lock {
    219  1.154    dyoung 	kmutex_t il_lock;	/* Protects the critical section. */
    220  1.154    dyoung 	uint64_t il_nexit;	/* Counts threads across all CPUs who
    221  1.154    dyoung 				 * have exited the critical section.
    222  1.154    dyoung 				 * Access to il_nexit is synchronized
    223  1.154    dyoung 				 * by il_lock.
    224  1.154    dyoung 				 */
    225  1.154    dyoung 	percpu_t *il_nenter;	/* Counts threads on each CPU who have
    226  1.154    dyoung 				 * entered or who wait to enter the
    227  1.154    dyoung 				 * critical section protected by il_lock.
    228  1.154    dyoung 				 * Synchronization is not required.
    229  1.154    dyoung 				 */
    230  1.154    dyoung 	kcondvar_t il_emptied;	/* The ifnet_lock user must arrange for
    231  1.154    dyoung 				 * the last threads in the critical
    232  1.154    dyoung 				 * section to signal this condition variable
    233  1.154    dyoung 				 * before they leave.
    234  1.154    dyoung 				 */
    235  1.153    dyoung };
    236  1.153    dyoung #endif /* _KERNEL */
    237  1.153    dyoung 
    238   1.55   thorpej /*
    239   1.55   thorpej  * Structure defining a queue for a network interface.
    240    1.1       cgd  *
    241    1.1       cgd  * (Would like to call this struct ``if'', but C isn't PL/1.)
    242    1.1       cgd  */
    243   1.19       cgd TAILQ_HEAD(ifnet_head, ifnet);		/* the actual queue head */
    244   1.23   thorpej 
    245  1.149     rmind typedef struct ifnet {
    246   1.23   thorpej 	void	*if_softc;		/* lower-level data for this if */
    247   1.17   mycroft 	TAILQ_ENTRY(ifnet) if_list;	/* all struct ifnets are chained */
    248   1.17   mycroft 	TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */
    249   1.23   thorpej 	char	if_xname[IFNAMSIZ];	/* external name (name + unit) */
    250    1.9   mycroft 	int	if_pcount;		/* number of promiscuous listeners */
    251  1.146     pooka 	struct bpf_if *if_bpf;		/* packet filter structure */
    252    1.9   mycroft 	u_short	if_index;		/* numeric abbreviation for this if */
    253    1.9   mycroft 	short	if_timer;		/* time 'til if_watchdog called */
    254    1.1       cgd 	short	if_flags;		/* up/down, broadcast, etc. */
    255   1.25       gwr 	short	if__pad1;		/* be nice to m68k ports */
    256   1.12       cgd 	struct	if_data if_data;	/* statistics and other data about if */
    257   1.44   thorpej 	/*
    258   1.44   thorpej 	 * Procedure handles.  If you add more of these, don't forget the
    259   1.44   thorpej 	 * corresponding NULL stub in if.c.
    260   1.44   thorpej 	 */
    261    1.9   mycroft 	int	(*if_output)		/* output routine (enqueue) */
    262  1.122    dyoung 		    (struct ifnet *, struct mbuf *, const struct sockaddr *,
    263  1.114   thorpej 		     struct rtentry *);
    264   1.36   thorpej 	void	(*if_input)		/* input routine (from h/w driver) */
    265  1.114   thorpej 		    (struct ifnet *, struct mbuf *);
    266   1.16   mycroft 	void	(*if_start)		/* initiate output routine */
    267  1.114   thorpej 		    (struct ifnet *);
    268    1.9   mycroft 	int	(*if_ioctl)		/* ioctl routine */
    269  1.123  christos 		    (struct ifnet *, u_long, void *);
    270   1.54   thorpej 	int	(*if_init)		/* init routine */
    271  1.114   thorpej 		    (struct ifnet *);
    272   1.54   thorpej 	void	(*if_stop)		/* stop routine */
    273  1.114   thorpej 		    (struct ifnet *, int);
    274   1.16   mycroft 	void	(*if_watchdog)		/* timer routine */
    275  1.114   thorpej 		    (struct ifnet *);
    276   1.32      matt 	void	(*if_drain)		/* routine to release resources */
    277  1.114   thorpej 		    (struct ifnet *);
    278   1.55   thorpej 	struct ifaltq if_snd;		/* output queue (includes altq) */
    279  1.131    dyoung 	struct ifaddr	*if_dl;		/* identity of this interface. */
    280  1.141    dyoung 	const struct	sockaddr_dl *if_sadl;	/* pointer to sockaddr_dl
    281  1.141    dyoung 						 * of if_dl
    282  1.141    dyoung 						 */
    283  1.141    dyoung 	/* if_hwdl: h/w identity
    284  1.141    dyoung 	 *
    285  1.141    dyoung 	 * May be NULL.  If not NULL, it is the address assigned
    286  1.141    dyoung 	 * to the interface by the manufacturer, so it very likely
    287  1.141    dyoung 	 * to be unique.  It MUST NOT be deleted.  It is highly
    288  1.141    dyoung 	 * suitable for deriving the EUI64 for the interface.
    289  1.141    dyoung 	 */
    290  1.141    dyoung 	struct ifaddr	*if_hwdl;
    291   1.99      yamt 	const uint8_t *if_broadcastaddr;/* linklevel broadcast bytestring */
    292   1.55   thorpej 	void	*if_bridge;		/* bridge glue */
    293   1.59   thorpej 	int	if_dlt;			/* data link type (<net/dlt.h>) */
    294  1.156     rmind 	pfil_head_t *	if_pfil;	/* filtering point */
    295   1.70   thorpej 	uint64_t if_capabilities;	/* interface capabilities */
    296   1.70   thorpej 	uint64_t if_capenable;		/* capabilities enabled */
    297  1.116  liamjfoy 	union {
    298  1.123  christos 		void *		carp_s;	/* carp structure (used by !carp ifs) */
    299  1.116  liamjfoy 		struct ifnet	*carp_d;/* ptr to carpdev (used by carp ifs) */
    300  1.116  liamjfoy 	} if_carp_ptr;
    301  1.116  liamjfoy #define if_carp		if_carp_ptr.carp_s
    302  1.116  liamjfoy #define if_carpdev	if_carp_ptr.carp_d
    303   1.70   thorpej 	/*
    304   1.70   thorpej 	 * These are pre-computed based on an interfaces enabled
    305   1.70   thorpej 	 * capabilities, for speed elsewhere.
    306   1.70   thorpej 	 */
    307   1.74   thorpej 	int	if_csum_flags_tx;	/* M_CSUM_* flags for Tx */
    308   1.74   thorpej 	int	if_csum_flags_rx;	/* M_CSUM_* flags for Rx */
    309   1.77    itojun 
    310   1.77    itojun 	void	*if_afdata[AF_MAX];
    311   1.85      matt 	struct	mowner *if_mowner;	/* who owns mbufs for this interface */
    312  1.104      yamt 
    313  1.118      yamt 	void	*if_agrprivate;		/* used only when #if NAGR > 0 */
    314  1.139      yamt 
    315  1.139      yamt 	/*
    316  1.139      yamt 	 * pf specific data, used only when #if NPF > 0.
    317  1.139      yamt 	 */
    318  1.139      yamt 	void	*if_pf_kif;		/* pf interface abstraction */
    319  1.139      yamt 	void	*if_pf_groups;		/* pf interface groups */
    320  1.143    dyoung 	/*
    321  1.143    dyoung 	 * During an ifnet's lifetime, it has only one if_index, but
    322  1.143    dyoung 	 * and if_index is not sufficient to identify an ifnet
    323  1.143    dyoung 	 * because during the lifetime of the system, many ifnets may occupy a
    324  1.143    dyoung 	 * given if_index.  Let us tell different ifnets at the same
    325  1.143    dyoung 	 * if_index apart by their if_index_gen, a unique number that each ifnet
    326  1.143    dyoung 	 * is assigned when it if_attach()s.  Now, the kernel can use the
    327  1.143    dyoung 	 * pair (if_index, if_index_gen) as a weak reference to an ifnet.
    328  1.143    dyoung 	 */
    329  1.143    dyoung 	uint64_t if_index_gen;		/* generation number for the ifnet
    330  1.143    dyoung 					 * at if_index: if two ifnets' index
    331  1.143    dyoung 					 * and generation number are both the
    332  1.143    dyoung 					 * same, they are the same ifnet.
    333  1.143    dyoung 					 */
    334  1.143    dyoung 	struct sysctllog	*if_sysctl_log;
    335  1.152    dyoung 	int (*if_initaddr)(struct ifnet *, struct ifaddr *, bool);
    336  1.152    dyoung 	int (*if_mcastop)(struct ifnet *, const unsigned long,
    337  1.152    dyoung 	    const struct sockaddr *);
    338  1.152    dyoung 	int (*if_setflags)(struct ifnet *, const short);
    339  1.153    dyoung 	struct ifnet_lock *if_ioctl_lock;
    340  1.149     rmind } ifnet_t;
    341  1.153    dyoung 
    342    1.9   mycroft #define	if_mtu		if_data.ifi_mtu
    343    1.9   mycroft #define	if_type		if_data.ifi_type
    344    1.9   mycroft #define	if_addrlen	if_data.ifi_addrlen
    345    1.9   mycroft #define	if_hdrlen	if_data.ifi_hdrlen
    346    1.9   mycroft #define	if_metric	if_data.ifi_metric
    347   1.46   thorpej #define	if_link_state	if_data.ifi_link_state
    348    1.9   mycroft #define	if_baudrate	if_data.ifi_baudrate
    349    1.9   mycroft #define	if_ipackets	if_data.ifi_ipackets
    350    1.9   mycroft #define	if_ierrors	if_data.ifi_ierrors
    351    1.9   mycroft #define	if_opackets	if_data.ifi_opackets
    352    1.9   mycroft #define	if_oerrors	if_data.ifi_oerrors
    353    1.9   mycroft #define	if_collisions	if_data.ifi_collisions
    354    1.9   mycroft #define	if_ibytes	if_data.ifi_ibytes
    355    1.9   mycroft #define	if_obytes	if_data.ifi_obytes
    356    1.9   mycroft #define	if_imcasts	if_data.ifi_imcasts
    357    1.9   mycroft #define	if_omcasts	if_data.ifi_omcasts
    358    1.9   mycroft #define	if_iqdrops	if_data.ifi_iqdrops
    359    1.9   mycroft #define	if_noproto	if_data.ifi_noproto
    360    1.9   mycroft #define	if_lastchange	if_data.ifi_lastchange
    361    1.1       cgd 
    362   1.70   thorpej #define	IFF_UP		0x0001		/* interface is up */
    363   1.70   thorpej #define	IFF_BROADCAST	0x0002		/* broadcast address valid */
    364   1.70   thorpej #define	IFF_DEBUG	0x0004		/* turn on debugging */
    365   1.70   thorpej #define	IFF_LOOPBACK	0x0008		/* is a loopback net */
    366   1.70   thorpej #define	IFF_POINTOPOINT	0x0010		/* interface is point-to-point link */
    367   1.70   thorpej #define	IFF_NOTRAILERS	0x0020		/* avoid use of trailers */
    368   1.70   thorpej #define	IFF_RUNNING	0x0040		/* resources allocated */
    369   1.70   thorpej #define	IFF_NOARP	0x0080		/* no address resolution protocol */
    370   1.70   thorpej #define	IFF_PROMISC	0x0100		/* receive all packets */
    371   1.70   thorpej #define	IFF_ALLMULTI	0x0200		/* receive all multicast packets */
    372   1.70   thorpej #define	IFF_OACTIVE	0x0400		/* transmission in progress */
    373   1.70   thorpej #define	IFF_SIMPLEX	0x0800		/* can't hear own transmissions */
    374    1.5       cgd #define	IFF_LINK0	0x1000		/* per link layer defined bit */
    375    1.6       cgd #define	IFF_LINK1	0x2000		/* per link layer defined bit */
    376    1.6       cgd #define	IFF_LINK2	0x4000		/* per link layer defined bit */
    377    1.9   mycroft #define	IFF_MULTICAST	0x8000		/* supports multicast */
    378    1.4   hpeyerl 
    379  1.105   thorpej #define	IFFBITS \
    380  1.105   thorpej     "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS" \
    381  1.105   thorpej     "\7RUNNING\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX" \
    382  1.105   thorpej     "\15LINK0\16LINK1\17LINK2\20MULTICAST"
    383  1.105   thorpej 
    384    1.1       cgd /* flags set internally only: */
    385    1.9   mycroft #define	IFF_CANTCHANGE \
    386    1.9   mycroft 	(IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
    387   1.52   thorpej 	    IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC)
    388    1.1       cgd 
    389    1.1       cgd /*
    390   1.46   thorpej  * Some convenience macros used for setting ifi_baudrate.
    391   1.94    keihan  * XXX 1000 vs. 1024? --thorpej (at) NetBSD.org
    392   1.46   thorpej  */
    393   1.46   thorpej #define	IF_Kbps(x)	((x) * 1000)		/* kilobits/sec. */
    394   1.46   thorpej #define	IF_Mbps(x)	(IF_Kbps((x) * 1000))	/* megabits/sec. */
    395   1.46   thorpej #define	IF_Gbps(x)	(IF_Mbps((x) * 1000))	/* gigabits/sec. */
    396   1.46   thorpej 
    397   1.70   thorpej /* Capabilities that interfaces can advertise. */
    398  1.161     pooka 					/* 0x01 .. 0x40 were previously used */
    399  1.108      yamt #define	IFCAP_TSOv4		0x00080	/* can do TCPv4 segmentation offload */
    400  1.108      yamt #define	IFCAP_CSUM_IPv4_Rx	0x00100	/* can do IPv4 header checksums (Rx) */
    401  1.108      yamt #define	IFCAP_CSUM_IPv4_Tx	0x00200	/* can do IPv4 header checksums (Tx) */
    402  1.108      yamt #define	IFCAP_CSUM_TCPv4_Rx	0x00400	/* can do IPv4/TCP checksums (Rx) */
    403  1.108      yamt #define	IFCAP_CSUM_TCPv4_Tx	0x00800	/* can do IPv4/TCP checksums (Tx) */
    404  1.108      yamt #define	IFCAP_CSUM_UDPv4_Rx	0x01000	/* can do IPv4/UDP checksums (Rx) */
    405  1.108      yamt #define	IFCAP_CSUM_UDPv4_Tx	0x02000	/* can do IPv4/UDP checksums (Tx) */
    406  1.108      yamt #define	IFCAP_CSUM_TCPv6_Rx	0x04000	/* can do IPv6/TCP checksums (Rx) */
    407  1.108      yamt #define	IFCAP_CSUM_TCPv6_Tx	0x08000	/* can do IPv6/TCP checksums (Tx) */
    408  1.108      yamt #define	IFCAP_CSUM_UDPv6_Rx	0x10000	/* can do IPv6/UDP checksums (Rx) */
    409  1.108      yamt #define	IFCAP_CSUM_UDPv6_Tx	0x20000	/* can do IPv6/UDP checksums (Tx) */
    410  1.121      yamt #define	IFCAP_TSOv6		0x40000	/* can do TCPv6 segmentation offload */
    411  1.162  christos #define	IFCAP_LRO		0x80000	/* can do Large Receive Offload */
    412  1.162  christos #define	IFCAP_MASK		0xfff80 /* currently valid capabilities */
    413  1.108      yamt 
    414  1.108      yamt #define	IFCAPBITS		\
    415  1.108      yamt 	"\020"			\
    416  1.108      yamt 	"\10TSO4"		\
    417  1.108      yamt 	"\11IP4CSUM_Rx"		\
    418  1.108      yamt 	"\12IP4CSUM_Tx"		\
    419  1.108      yamt 	"\13TCP4CSUM_Rx"	\
    420  1.108      yamt 	"\14TCP4CSUM_Tx"	\
    421  1.108      yamt 	"\15UDP4CSUM_Rx"	\
    422  1.108      yamt 	"\16UDP4CSUM_Tx"	\
    423  1.108      yamt 	"\17TCP6CSUM_Rx"	\
    424  1.108      yamt 	"\20TCP6CSUM_Tx"	\
    425  1.108      yamt 	"\21UDP6CSUM_Rx"	\
    426  1.121      yamt 	"\22UDP6CSUM_Tx"	\
    427  1.162  christos 	"\23TSO6"		\
    428  1.162  christos 	"\24LRO"		\
    429  1.105   thorpej 
    430  1.169     ozaki #define IFQ_LOCK(_ifq)		if ((_ifq)->ifq_lock) mutex_enter((_ifq)->ifq_lock)
    431  1.169     ozaki #define IFQ_UNLOCK(_ifq)	if ((_ifq)->ifq_lock) mutex_exit((_ifq)->ifq_lock)
    432  1.169     ozaki 
    433   1.46   thorpej /*
    434    1.1       cgd  * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)
    435    1.1       cgd  * input routines have queues of messages stored on ifqueue structures
    436    1.1       cgd  * (defined above).  Entries are added to and deleted from these structures
    437   1.79     pooka  * by these macros, which should be called with ipl raised to splnet().
    438    1.1       cgd  */
    439    1.1       cgd #define	IF_QFULL(ifq)		((ifq)->ifq_len >= (ifq)->ifq_maxlen)
    440    1.1       cgd #define	IF_DROP(ifq)		((ifq)->ifq_drops++)
    441  1.112  christos #define	IF_ENQUEUE(ifq, m) do { \
    442    1.1       cgd 	(m)->m_nextpkt = 0; \
    443    1.1       cgd 	if ((ifq)->ifq_tail == 0) \
    444    1.1       cgd 		(ifq)->ifq_head = m; \
    445    1.1       cgd 	else \
    446    1.1       cgd 		(ifq)->ifq_tail->m_nextpkt = m; \
    447    1.1       cgd 	(ifq)->ifq_tail = m; \
    448    1.1       cgd 	(ifq)->ifq_len++; \
    449  1.112  christos } while (/*CONSTCOND*/0)
    450  1.112  christos #define	IF_PREPEND(ifq, m) do { \
    451    1.1       cgd 	(m)->m_nextpkt = (ifq)->ifq_head; \
    452    1.1       cgd 	if ((ifq)->ifq_tail == 0) \
    453    1.1       cgd 		(ifq)->ifq_tail = (m); \
    454    1.1       cgd 	(ifq)->ifq_head = (m); \
    455    1.1       cgd 	(ifq)->ifq_len++; \
    456  1.112  christos } while (/*CONSTCOND*/0)
    457  1.112  christos #define	IF_DEQUEUE(ifq, m) do { \
    458    1.1       cgd 	(m) = (ifq)->ifq_head; \
    459    1.1       cgd 	if (m) { \
    460    1.1       cgd 		if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \
    461    1.1       cgd 			(ifq)->ifq_tail = 0; \
    462    1.1       cgd 		(m)->m_nextpkt = 0; \
    463    1.1       cgd 		(ifq)->ifq_len--; \
    464    1.1       cgd 	} \
    465  1.112  christos } while (/*CONSTCOND*/0)
    466   1.55   thorpej #define	IF_POLL(ifq, m)		((m) = (ifq)->ifq_head)
    467   1.55   thorpej #define	IF_PURGE(ifq)							\
    468   1.55   thorpej do {									\
    469   1.55   thorpej 	struct mbuf *__m0;						\
    470   1.57   thorpej 									\
    471   1.57   thorpej 	for (;;) {							\
    472   1.57   thorpej 		IF_DEQUEUE((ifq), __m0);				\
    473   1.57   thorpej 		if (__m0 == NULL)					\
    474   1.57   thorpej 			break;						\
    475   1.57   thorpej 		else							\
    476   1.57   thorpej 			m_freem(__m0);					\
    477   1.57   thorpej 	}								\
    478   1.83     perry } while (/*CONSTCOND*/ 0)
    479   1.55   thorpej #define	IF_IS_EMPTY(ifq)	((ifq)->ifq_len == 0)
    480    1.1       cgd 
    481   1.91     ragge #ifndef IFQ_MAXLEN
    482  1.102  jonathan #define	IFQ_MAXLEN	256
    483   1.91     ragge #endif
    484    1.1       cgd #define	IFNET_SLOWHZ	1		/* granularity is 1 second */
    485    1.1       cgd 
    486    1.1       cgd /*
    487   1.35     aidan  * Structure defining statistics and other data kept regarding an address
    488   1.35     aidan  * on a network interface.
    489   1.35     aidan  */
    490   1.35     aidan struct ifaddr_data {
    491   1.35     aidan 	int64_t	ifad_inbytes;
    492   1.35     aidan 	int64_t	ifad_outbytes;
    493   1.35     aidan };
    494   1.35     aidan 
    495   1.35     aidan /*
    496    1.1       cgd  * The ifaddr structure contains information about one address
    497    1.1       cgd  * of an interface.  They are maintained by the different address families,
    498    1.1       cgd  * are allocated and attached when an address is set, and are linked
    499    1.1       cgd  * together so all addresses for an interface can be located.
    500    1.1       cgd  */
    501    1.1       cgd struct ifaddr {
    502    1.1       cgd 	struct	sockaddr *ifa_addr;	/* address of interface */
    503    1.1       cgd 	struct	sockaddr *ifa_dstaddr;	/* other end of p-to-p link */
    504    1.1       cgd #define	ifa_broadaddr	ifa_dstaddr	/* broadcast address interface */
    505    1.1       cgd 	struct	sockaddr *ifa_netmask;	/* used to determine subnet */
    506    1.1       cgd 	struct	ifnet *ifa_ifp;		/* back-pointer to interface */
    507   1.17   mycroft 	TAILQ_ENTRY(ifaddr) ifa_list;	/* list of addresses for interface */
    508   1.35     aidan 	struct	ifaddr_data	ifa_data;	/* statistics on the address */
    509   1.20  christos 	void	(*ifa_rtrequest)	/* check or clean routes (+ or -)'d */
    510  1.140    dyoung 		        (int, struct rtentry *, const struct rt_addrinfo *);
    511   1.41  wrstuden 	u_int	ifa_flags;		/* mostly rt_flags for cloning */
    512   1.41  wrstuden 	int	ifa_refcnt;		/* count of references */
    513    1.9   mycroft 	int	ifa_metric;		/* cost of going out this interface */
    514  1.120    dyoung 	struct ifaddr	*(*ifa_getifa)(struct ifaddr *,
    515  1.120    dyoung 			               const struct sockaddr *);
    516  1.120    dyoung 	uint32_t	*ifa_seqno;
    517  1.120    dyoung 	int16_t	ifa_preference;	/* preference level for this address */
    518    1.1       cgd };
    519  1.136    dyoung #define	IFA_ROUTE	RTF_UP	/* (0x01) route installed */
    520   1.37    itojun 
    521   1.37    itojun /*
    522  1.150      matt  * Message format for use in obtaining information about interfaces from
    523  1.150      matt  * sysctl and the routing socket.  We need to force 64-bit alignment if we
    524  1.150      matt  * aren't using compatiblity definitons.
    525    1.9   mycroft  */
    526  1.150      matt #if !defined(_KERNEL) || !defined(COMPAT_RTSOCK)
    527  1.150      matt #define	__align64	__aligned(sizeof(uint64_t))
    528  1.150      matt #else
    529  1.150      matt #define	__align64
    530  1.150      matt #endif
    531    1.9   mycroft struct if_msghdr {
    532  1.150      matt 	u_short	ifm_msglen __align64;
    533  1.150      matt 				/* to skip over non-understood messages */
    534   1.71       wiz 	u_char	ifm_version;	/* future binary compatibility */
    535    1.9   mycroft 	u_char	ifm_type;	/* message type */
    536    1.9   mycroft 	int	ifm_addrs;	/* like rtm_addrs */
    537    1.9   mycroft 	int	ifm_flags;	/* value of if_flags */
    538    1.9   mycroft 	u_short	ifm_index;	/* index for associated ifp */
    539  1.150      matt 	struct	if_data ifm_data __align64;
    540  1.150      matt 				/* statistics and other data about if */
    541    1.9   mycroft };
    542   1.42    bouyer 
    543    1.9   mycroft /*
    544    1.9   mycroft  * Message format for use in obtaining information about interface addresses
    545    1.9   mycroft  * from sysctl and the routing socket.
    546    1.9   mycroft  */
    547    1.9   mycroft struct ifa_msghdr {
    548  1.150      matt 	u_short	ifam_msglen __align64;
    549  1.150      matt 				/* to skip over non-understood messages */
    550   1.71       wiz 	u_char	ifam_version;	/* future binary compatibility */
    551    1.9   mycroft 	u_char	ifam_type;	/* message type */
    552    1.9   mycroft 	int	ifam_addrs;	/* like rtm_addrs */
    553    1.9   mycroft 	int	ifam_flags;	/* value of ifa_flags */
    554  1.150      matt 	int	ifam_metric;	/* value of ifa_metric */
    555    1.9   mycroft 	u_short	ifam_index;	/* index for associated ifp */
    556    1.9   mycroft };
    557   1.46   thorpej 
    558   1.46   thorpej /*
    559   1.46   thorpej  * Message format announcing the arrival or departure of a network interface.
    560   1.46   thorpej  */
    561   1.46   thorpej struct if_announcemsghdr {
    562  1.150      matt 	u_short	ifan_msglen __align64;
    563  1.150      matt 				/* to skip over non-understood messages */
    564   1.46   thorpej 	u_char	ifan_version;	/* future binary compatibility */
    565   1.46   thorpej 	u_char	ifan_type;	/* message type */
    566   1.46   thorpej 	u_short	ifan_index;	/* index for associated ifp */
    567   1.46   thorpej 	char	ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
    568   1.46   thorpej 	u_short	ifan_what;	/* what type of announcement */
    569   1.46   thorpej };
    570   1.46   thorpej 
    571   1.46   thorpej #define	IFAN_ARRIVAL	0	/* interface arrival */
    572   1.46   thorpej #define	IFAN_DEPARTURE	1	/* interface departure */
    573    1.9   mycroft 
    574  1.150      matt #undef __align64
    575  1.150      matt 
    576    1.1       cgd /*
    577    1.1       cgd  * Interface request structure used for socket
    578    1.1       cgd  * ioctl's.  All interface ioctl's must have parameter
    579    1.1       cgd  * definitions which begin with ifr_name.  The
    580    1.1       cgd  * remainder may be interface specific.
    581    1.1       cgd  */
    582    1.1       cgd struct	ifreq {
    583    1.1       cgd 	char	ifr_name[IFNAMSIZ];		/* if name, e.g. "en0" */
    584    1.1       cgd 	union {
    585    1.1       cgd 		struct	sockaddr ifru_addr;
    586    1.1       cgd 		struct	sockaddr ifru_dstaddr;
    587    1.1       cgd 		struct	sockaddr ifru_broadaddr;
    588  1.124  christos 		struct	sockaddr_storage ifru_space;
    589    1.1       cgd 		short	ifru_flags;
    590    1.1       cgd 		int	ifru_metric;
    591   1.24       cgd 		int	ifru_mtu;
    592   1.61   thorpej 		int	ifru_dlt;
    593   1.39      matt 		u_int	ifru_value;
    594  1.123  christos 		void *	ifru_data;
    595  1.111    dyoung 		struct {
    596  1.111    dyoung 			uint32_t	b_buflen;
    597  1.111    dyoung 			void		*b_buf;
    598  1.111    dyoung 		} ifru_b;
    599    1.1       cgd 	} ifr_ifru;
    600    1.1       cgd #define	ifr_addr	ifr_ifru.ifru_addr	/* address */
    601    1.1       cgd #define	ifr_dstaddr	ifr_ifru.ifru_dstaddr	/* other end of p-to-p link */
    602    1.1       cgd #define	ifr_broadaddr	ifr_ifru.ifru_broadaddr	/* broadcast address */
    603  1.127       gdt #define	ifr_space	ifr_ifru.ifru_space	/* sockaddr_storage */
    604    1.1       cgd #define	ifr_flags	ifr_ifru.ifru_flags	/* flags */
    605    1.1       cgd #define	ifr_metric	ifr_ifru.ifru_metric	/* metric */
    606   1.24       cgd #define	ifr_mtu		ifr_ifru.ifru_mtu	/* mtu */
    607   1.61   thorpej #define	ifr_dlt		ifr_ifru.ifru_dlt	/* data link type (DLT_*) */
    608   1.39      matt #define	ifr_value	ifr_ifru.ifru_value	/* generic value */
    609   1.27   thorpej #define	ifr_media	ifr_ifru.ifru_metric	/* media options (overload) */
    610  1.111    dyoung #define	ifr_data	ifr_ifru.ifru_data	/* for use by interface
    611  1.111    dyoung 						 * XXX deprecated
    612  1.111    dyoung 						 */
    613  1.111    dyoung #define	ifr_buf		ifr_ifru.ifru_b.b_buf	/* new interface ioctls */
    614  1.111    dyoung #define	ifr_buflen	ifr_ifru.ifru_b.b_buflen
    615  1.159  christos #define	ifr_index	ifr_ifru.ifru_value	/* interface index, BSD */
    616  1.159  christos #define	ifr_ifindex	ifr_index		/* interface index, linux */
    617   1.70   thorpej };
    618   1.70   thorpej 
    619  1.126    dyoung #ifdef _KERNEL
    620  1.125    dyoung #define	ifreq_setdstaddr	ifreq_setaddr
    621  1.125    dyoung #define	ifreq_setbroadaddr	ifreq_setaddr
    622  1.125    dyoung #define	ifreq_getdstaddr	ifreq_getaddr
    623  1.125    dyoung #define	ifreq_getbroadaddr	ifreq_getaddr
    624  1.125    dyoung 
    625  1.125    dyoung static inline const struct sockaddr *
    626  1.160  christos /*ARGSUSED*/
    627  1.125    dyoung ifreq_getaddr(u_long cmd, const struct ifreq *ifr)
    628  1.125    dyoung {
    629  1.125    dyoung 	return &ifr->ifr_addr;
    630  1.125    dyoung }
    631  1.126    dyoung #endif /* _KERNEL */
    632  1.125    dyoung 
    633   1.70   thorpej struct ifcapreq {
    634   1.70   thorpej 	char		ifcr_name[IFNAMSIZ];	/* if name, e.g. "en0" */
    635   1.70   thorpej 	uint64_t	ifcr_capabilities;	/* supported capabiliites */
    636   1.70   thorpej 	uint64_t	ifcr_capenable;		/* capabilities enabled */
    637   1.50    itojun };
    638    1.1       cgd 
    639    1.1       cgd struct ifaliasreq {
    640    1.1       cgd 	char	ifra_name[IFNAMSIZ];		/* if name, e.g. "en0" */
    641    1.1       cgd 	struct	sockaddr ifra_addr;
    642   1.21        pk 	struct	sockaddr ifra_dstaddr;
    643   1.21        pk #define	ifra_broadaddr	ifra_dstaddr
    644    1.1       cgd 	struct	sockaddr ifra_mask;
    645   1.76      matt };
    646   1.76      matt 
    647   1.76      matt struct ifdatareq {
    648   1.76      matt 	char	ifdr_name[IFNAMSIZ];		/* if name, e.g. "en0" */
    649   1.76      matt 	struct	if_data ifdr_data;
    650   1.27   thorpej };
    651   1.27   thorpej 
    652   1.27   thorpej struct ifmediareq {
    653   1.27   thorpej 	char	ifm_name[IFNAMSIZ];		/* if name, e.g. "en0" */
    654   1.27   thorpej 	int	ifm_current;			/* current media options */
    655   1.27   thorpej 	int	ifm_mask;			/* don't care mask */
    656   1.27   thorpej 	int	ifm_status;			/* media status */
    657   1.27   thorpej 	int	ifm_active;			/* active options */
    658   1.27   thorpej 	int	ifm_count;			/* # entries in ifm_ulist
    659   1.27   thorpej 						   array */
    660   1.27   thorpej 	int	*ifm_ulist;			/* media words */
    661    1.1       cgd };
    662   1.31       kml 
    663  1.101     perry 
    664   1.31       kml struct  ifdrv {
    665   1.31       kml 	char		ifd_name[IFNAMSIZ];	/* if name, e.g. "en0" */
    666   1.31       kml 	unsigned long	ifd_cmd;
    667   1.31       kml 	size_t		ifd_len;
    668   1.31       kml 	void		*ifd_data;
    669  1.101     perry };
    670  1.148     pooka #define IFLINKSTR_QUERYLEN	0x01
    671  1.148     pooka #define IFLINKSTR_UNSET		0x02
    672    1.1       cgd 
    673    1.1       cgd /*
    674    1.1       cgd  * Structure used in SIOCGIFCONF request.
    675    1.1       cgd  * Used to retrieve interface configuration
    676    1.1       cgd  * for machine (useful for programs which
    677    1.1       cgd  * must know all networks accessible).
    678    1.1       cgd  */
    679    1.1       cgd struct	ifconf {
    680    1.1       cgd 	int	ifc_len;		/* size of associated buffer */
    681    1.1       cgd 	union {
    682  1.123  christos 		void *	ifcu_buf;
    683    1.1       cgd 		struct	ifreq *ifcu_req;
    684    1.1       cgd 	} ifc_ifcu;
    685    1.1       cgd #define	ifc_buf	ifc_ifcu.ifcu_buf	/* buffer address */
    686    1.1       cgd #define	ifc_req	ifc_ifcu.ifcu_req	/* array of structures returned */
    687    1.1       cgd };
    688    1.1       cgd 
    689   1.37    itojun /*
    690   1.37    itojun  * Structure for SIOC[AGD]LIFADDR
    691   1.37    itojun  */
    692   1.37    itojun struct if_laddrreq {
    693   1.37    itojun 	char iflr_name[IFNAMSIZ];
    694   1.37    itojun 	unsigned int flags;
    695   1.37    itojun #define IFLR_PREFIX	0x8000	/* in: prefix given  out: kernel fills id */
    696  1.136    dyoung #define IFLR_ACTIVE	0x4000	/* in/out: link-layer address activation */
    697  1.141    dyoung #define IFLR_FACTORY	0x2000	/* in/out: factory link-layer address */
    698   1.37    itojun 	unsigned int prefixlen;		/* in/out */
    699   1.37    itojun 	struct sockaddr_storage addr;	/* in/out */
    700   1.37    itojun 	struct sockaddr_storage dstaddr; /* out */
    701   1.37    itojun };
    702   1.37    itojun 
    703  1.120    dyoung /*
    704  1.120    dyoung  * Structure for SIOC[SG]IFADDRPREF
    705  1.120    dyoung  */
    706  1.120    dyoung struct if_addrprefreq {
    707  1.120    dyoung 	char			ifap_name[IFNAMSIZ];
    708  1.120    dyoung 	int16_t			ifap_preference;	/* in/out */
    709  1.120    dyoung 	struct sockaddr_storage	ifap_addr;		/* in/out */
    710  1.120    dyoung };
    711  1.120    dyoung 
    712    1.9   mycroft #include <net/if_arp.h>
    713    1.9   mycroft 
    714   1.87     bjh21 #endif /* _NETBSD_SOURCE */
    715   1.38    kleink 
    716   1.15       jtc #ifdef _KERNEL
    717   1.44   thorpej #ifdef IFAREF_DEBUG
    718   1.44   thorpej #define	IFAREF(ifa)							\
    719   1.44   thorpej do {									\
    720   1.44   thorpej 	printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__,		\
    721   1.44   thorpej 	    (ifa), ++(ifa)->ifa_refcnt);				\
    722   1.83     perry } while (/*CONSTCOND*/ 0)
    723   1.44   thorpej 
    724   1.44   thorpej #define	IFAFREE(ifa)							\
    725   1.44   thorpej do {									\
    726   1.44   thorpej 	if ((ifa)->ifa_refcnt <= 0)					\
    727   1.44   thorpej 		panic("%s:%d: %p ifa_refcnt <= 0", __FILE__,		\
    728   1.44   thorpej 		    __LINE__, (ifa));					\
    729   1.44   thorpej 	printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__,		\
    730   1.44   thorpej 	    (ifa), --(ifa)->ifa_refcnt);				\
    731   1.44   thorpej 	if ((ifa)->ifa_refcnt == 0)					\
    732   1.44   thorpej 		ifafree(ifa);						\
    733   1.83     perry } while (/*CONSTCOND*/ 0)
    734   1.44   thorpej #else
    735   1.44   thorpej #define	IFAREF(ifa)	(ifa)->ifa_refcnt++
    736   1.44   thorpej 
    737   1.44   thorpej #ifdef DIAGNOSTIC
    738   1.44   thorpej #define	IFAFREE(ifa)							\
    739   1.44   thorpej do {									\
    740   1.44   thorpej 	if ((ifa)->ifa_refcnt <= 0)					\
    741   1.44   thorpej 		panic("%s:%d: %p ifa_refcnt <= 0", __FILE__,		\
    742   1.44   thorpej 		    __LINE__, (ifa));					\
    743   1.44   thorpej 	if (--(ifa)->ifa_refcnt == 0)					\
    744   1.44   thorpej 		ifafree(ifa);						\
    745   1.83     perry } while (/*CONSTCOND*/ 0)
    746   1.44   thorpej #else
    747   1.44   thorpej #define	IFAFREE(ifa)							\
    748   1.44   thorpej do {									\
    749   1.44   thorpej 	if (--(ifa)->ifa_refcnt == 0)					\
    750   1.44   thorpej 		ifafree(ifa);						\
    751   1.83     perry } while (/*CONSTCOND*/ 0)
    752   1.44   thorpej #endif /* DIAGNOSTIC */
    753   1.44   thorpej #endif /* IFAREF_DEBUG */
    754   1.55   thorpej 
    755   1.55   thorpej #ifdef ALTQ
    756   1.55   thorpej #define	ALTQ_DECL(x)		x
    757  1.107  christos #define ALTQ_COMMA		,
    758   1.55   thorpej 
    759   1.55   thorpej #define IFQ_ENQUEUE(ifq, m, pattr, err)					\
    760   1.55   thorpej do {									\
    761  1.169     ozaki 	IFQ_LOCK((ifq));						\
    762   1.55   thorpej 	if (ALTQ_IS_ENABLED((ifq)))					\
    763   1.55   thorpej 		ALTQ_ENQUEUE((ifq), (m), (pattr), (err));		\
    764   1.55   thorpej 	else {								\
    765   1.55   thorpej 		if (IF_QFULL((ifq))) {					\
    766   1.55   thorpej 			m_freem((m));					\
    767   1.55   thorpej 			(err) = ENOBUFS;				\
    768   1.55   thorpej 		} else {						\
    769   1.55   thorpej 			IF_ENQUEUE((ifq), (m));				\
    770   1.55   thorpej 			(err) = 0;					\
    771   1.55   thorpej 		}							\
    772   1.55   thorpej 	}								\
    773   1.55   thorpej 	if ((err))							\
    774   1.55   thorpej 		(ifq)->ifq_drops++;					\
    775  1.169     ozaki 	IFQ_UNLOCK((ifq));						\
    776   1.83     perry } while (/*CONSTCOND*/ 0)
    777   1.55   thorpej 
    778   1.55   thorpej #define IFQ_DEQUEUE(ifq, m)						\
    779   1.55   thorpej do {									\
    780  1.169     ozaki 	IFQ_LOCK((ifq));						\
    781   1.55   thorpej 	if (TBR_IS_ENABLED((ifq)))					\
    782   1.55   thorpej 		(m) = tbr_dequeue((ifq), ALTDQ_REMOVE);			\
    783   1.55   thorpej 	else if (ALTQ_IS_ENABLED((ifq)))				\
    784   1.55   thorpej 		ALTQ_DEQUEUE((ifq), (m));				\
    785   1.56   thorpej 	else								\
    786   1.62   thorpej 		IF_DEQUEUE((ifq), (m));					\
    787  1.169     ozaki 	IFQ_UNLOCK((ifq));						\
    788   1.83     perry } while (/*CONSTCOND*/ 0)
    789   1.56   thorpej 
    790   1.56   thorpej #define	IFQ_POLL(ifq, m)						\
    791   1.56   thorpej do {									\
    792  1.169     ozaki 	IFQ_LOCK((ifq));						\
    793   1.56   thorpej 	if (TBR_IS_ENABLED((ifq)))					\
    794   1.56   thorpej 		(m) = tbr_dequeue((ifq), ALTDQ_POLL);			\
    795   1.56   thorpej 	else if (ALTQ_IS_ENABLED((ifq)))				\
    796   1.56   thorpej 		ALTQ_POLL((ifq), (m));					\
    797   1.55   thorpej 	else								\
    798   1.55   thorpej 		IF_POLL((ifq), (m));					\
    799  1.169     ozaki 	IFQ_UNLOCK((ifq));						\
    800   1.83     perry } while (/*CONSTCOND*/ 0)
    801   1.55   thorpej 
    802   1.55   thorpej #define	IFQ_PURGE(ifq)							\
    803   1.55   thorpej do {									\
    804  1.169     ozaki 	IFQ_LOCK((ifq));						\
    805   1.55   thorpej 	if (ALTQ_IS_ENABLED((ifq)))					\
    806   1.55   thorpej 		ALTQ_PURGE((ifq));					\
    807   1.55   thorpej 	else								\
    808   1.55   thorpej 		IF_PURGE((ifq));					\
    809  1.169     ozaki 	IFQ_UNLOCK((ifq));						\
    810   1.83     perry } while (/*CONSTCOND*/ 0)
    811   1.55   thorpej 
    812   1.55   thorpej #define	IFQ_SET_READY(ifq)						\
    813   1.55   thorpej do {									\
    814   1.55   thorpej 	(ifq)->altq_flags |= ALTQF_READY;				\
    815   1.83     perry } while (/*CONSTCOND*/ 0)
    816   1.55   thorpej 
    817  1.109     peter #define	IFQ_CLASSIFY(ifq, m, af, pattr)					\
    818   1.55   thorpej do {									\
    819  1.169     ozaki 	IFQ_LOCK((ifq));						\
    820   1.55   thorpej 	if (ALTQ_IS_ENABLED((ifq))) {					\
    821   1.55   thorpej 		if (ALTQ_NEEDS_CLASSIFY((ifq)))				\
    822  1.109     peter 			(pattr)->pattr_class = (*(ifq)->altq_classify)	\
    823   1.55   thorpej 				((ifq)->altq_clfier, (m), (af));	\
    824  1.109     peter 		(pattr)->pattr_af = (af);				\
    825  1.123  christos 		(pattr)->pattr_hdr = mtod((m), void *);		\
    826   1.55   thorpej 	}								\
    827  1.169     ozaki 	IFQ_UNLOCK((ifq));						\
    828   1.83     perry } while (/*CONSTCOND*/ 0)
    829   1.55   thorpej #else /* ! ALTQ */
    830   1.55   thorpej #define	ALTQ_DECL(x)		/* nothing */
    831  1.107  christos #define ALTQ_COMMA
    832   1.55   thorpej 
    833   1.55   thorpej #define	IFQ_ENQUEUE(ifq, m, pattr, err)					\
    834   1.55   thorpej do {									\
    835  1.169     ozaki 	IFQ_LOCK((ifq));						\
    836   1.55   thorpej 	if (IF_QFULL((ifq))) {						\
    837   1.55   thorpej 		m_freem((m));						\
    838   1.55   thorpej 		(err) = ENOBUFS;					\
    839   1.55   thorpej 	} else {							\
    840   1.55   thorpej 		IF_ENQUEUE((ifq), (m));					\
    841   1.55   thorpej 		(err) = 0;						\
    842   1.55   thorpej 	}								\
    843   1.55   thorpej 	if ((err))							\
    844   1.55   thorpej 		(ifq)->ifq_drops++;					\
    845  1.169     ozaki 	IFQ_UNLOCK((ifq));						\
    846   1.83     perry } while (/*CONSTCOND*/ 0)
    847   1.55   thorpej 
    848  1.169     ozaki #define	IFQ_DEQUEUE(ifq, m)						\
    849  1.169     ozaki do {									\
    850  1.169     ozaki 	IFQ_LOCK((ifq));						\
    851  1.169     ozaki 	IF_DEQUEUE((ifq), (m));						\
    852  1.169     ozaki 	IFQ_UNLOCK((ifq));						\
    853  1.169     ozaki } while (/*CONSTCOND*/ 0)
    854   1.55   thorpej 
    855  1.169     ozaki #define	IFQ_POLL(ifq, m)						\
    856  1.169     ozaki do {									\
    857  1.169     ozaki 	IFQ_LOCK((ifq));						\
    858  1.169     ozaki 	IF_POLL((ifq), (m));						\
    859  1.169     ozaki 	IFQ_UNLOCK((ifq));						\
    860  1.169     ozaki } while (/*CONSTCOND*/ 0)
    861   1.55   thorpej 
    862  1.169     ozaki #define	IFQ_PURGE(ifq)							\
    863  1.169     ozaki do {									\
    864  1.169     ozaki 	IFQ_LOCK((ifq));						\
    865  1.169     ozaki 	IF_PURGE((ifq));						\
    866  1.169     ozaki 	IFQ_UNLOCK((ifq));						\
    867  1.169     ozaki } while (/*CONSTCOND*/ 0)
    868   1.55   thorpej 
    869   1.55   thorpej #define	IFQ_SET_READY(ifq)	/* nothing */
    870   1.55   thorpej 
    871  1.109     peter #define	IFQ_CLASSIFY(ifq, m, af, pattr) /* nothing */
    872   1.55   thorpej 
    873   1.55   thorpej #endif /* ALTQ */
    874   1.55   thorpej 
    875   1.55   thorpej #define	IFQ_IS_EMPTY(ifq)		IF_IS_EMPTY((ifq))
    876   1.55   thorpej #define	IFQ_INC_LEN(ifq)		((ifq)->ifq_len++)
    877   1.55   thorpej #define	IFQ_DEC_LEN(ifq)		(--(ifq)->ifq_len)
    878   1.55   thorpej #define	IFQ_INC_DROPS(ifq)		((ifq)->ifq_drops++)
    879   1.55   thorpej #define	IFQ_SET_MAXLEN(ifq, len)	((ifq)->ifq_maxlen = (len))
    880   1.84   thorpej 
    881   1.84   thorpej #include <sys/mallocvar.h>
    882   1.84   thorpej MALLOC_DECLARE(M_IFADDR);
    883   1.84   thorpej MALLOC_DECLARE(M_IFMADDR);
    884  1.100      matt 
    885  1.125    dyoung int ifreq_setaddr(u_long, struct ifreq *, const struct sockaddr *);
    886  1.125    dyoung 
    887  1.138  christos struct ifnet *if_alloc(u_char);
    888  1.151    dyoung void if_free(struct ifnet *);
    889  1.138  christos void if_initname(struct ifnet *, const char *, int);
    890  1.133    dyoung struct ifaddr *if_dl_create(const struct ifnet *, const struct sockaddr_dl **);
    891  1.137    dyoung void if_activate_sadl(struct ifnet *, struct ifaddr *,
    892  1.137    dyoung     const struct sockaddr_dl *);
    893  1.141    dyoung void	if_set_sadl(struct ifnet *, const void *, u_char, bool);
    894  1.114   thorpej void	if_alloc_sadl(struct ifnet *);
    895  1.114   thorpej void	if_free_sadl(struct ifnet *);
    896  1.114   thorpej void	if_attach(struct ifnet *);
    897  1.114   thorpej void	if_attachdomain(void);
    898  1.114   thorpej void	if_attachdomain1(struct ifnet *);
    899  1.114   thorpej void	if_deactivate(struct ifnet *);
    900  1.129    dyoung void	if_purgeaddrs(struct ifnet *, int, void (*)(struct ifaddr *));
    901  1.114   thorpej void	if_detach(struct ifnet *);
    902  1.114   thorpej void	if_down(struct ifnet *);
    903  1.110    dyoung void	if_link_state_change(struct ifnet *, int);
    904  1.114   thorpej void	if_slowtimo(void *);
    905  1.114   thorpej void	if_up(struct ifnet *);
    906  1.123  christos int	ifconf(u_long, void *);
    907  1.114   thorpej void	ifinit(void);
    908  1.139      yamt void	ifinit1(void);
    909  1.168       rtr int	ifaddrpref_ioctl(struct socket *, u_long, void *, struct ifnet *);
    910  1.163     pooka extern int (*ifioctl)(struct socket *, u_long, void *, struct lwp *);
    911  1.134    dyoung int	ifioctl_common(struct ifnet *, u_long, void *);
    912  1.114   thorpej int	ifpromisc(struct ifnet *, int);
    913  1.114   thorpej struct	ifnet *ifunit(const char *);
    914  1.152    dyoung int	if_addr_init(ifnet_t *, struct ifaddr *, bool);
    915  1.152    dyoung int	if_mcast_op(ifnet_t *, const unsigned long, const struct sockaddr *);
    916  1.152    dyoung int	if_flags_set(struct ifnet *, const short);
    917  1.114   thorpej 
    918  1.130    dyoung void ifa_insert(struct ifnet *, struct ifaddr *);
    919  1.130    dyoung void ifa_remove(struct ifnet *, struct ifaddr *);
    920  1.130    dyoung 
    921  1.114   thorpej struct	ifaddr *ifa_ifwithaddr(const struct sockaddr *);
    922  1.114   thorpej struct	ifaddr *ifa_ifwithaf(int);
    923  1.114   thorpej struct	ifaddr *ifa_ifwithdstaddr(const struct sockaddr *);
    924  1.114   thorpej struct	ifaddr *ifa_ifwithnet(const struct sockaddr *);
    925  1.114   thorpej struct	ifaddr *ifa_ifwithladdr(const struct sockaddr *);
    926  1.114   thorpej struct	ifaddr *ifa_ifwithroute(int, const struct sockaddr *,
    927  1.114   thorpej 					const struct sockaddr *);
    928  1.114   thorpej struct	ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *);
    929  1.114   thorpej void	ifafree(struct ifaddr *);
    930  1.140    dyoung void	link_rtrequest(int, struct rtentry *, const struct rt_addrinfo *);
    931   1.51   thorpej 
    932  1.114   thorpej void	if_clone_attach(struct if_clone *);
    933  1.114   thorpej void	if_clone_detach(struct if_clone *);
    934   1.51   thorpej 
    935  1.114   thorpej int	if_clone_create(const char *);
    936  1.114   thorpej int	if_clone_destroy(const char *);
    937    1.9   mycroft 
    938  1.107  christos int	ifq_enqueue(struct ifnet *, struct mbuf * ALTQ_COMMA
    939  1.107  christos     ALTQ_DECL(struct altq_pktattr *));
    940  1.107  christos int	ifq_enqueue2(struct ifnet *, struct ifqueue *, struct mbuf * ALTQ_COMMA
    941  1.107  christos     ALTQ_DECL(struct altq_pktattr *));
    942  1.107  christos 
    943  1.123  christos int	loioctl(struct ifnet *, u_long, void *);
    944  1.114   thorpej void	loopattach(int);
    945  1.114   thorpej int	looutput(struct ifnet *,
    946  1.122    dyoung 	   struct mbuf *, const struct sockaddr *, struct rtentry *);
    947  1.140    dyoung void	lortrequest(int, struct rtentry *, const struct rt_addrinfo *);
    948   1.44   thorpej 
    949   1.44   thorpej /*
    950   1.44   thorpej  * These are exported because they're an easy way to tell if
    951   1.44   thorpej  * an interface is going away without having to burn a flag.
    952   1.44   thorpej  */
    953  1.114   thorpej int	if_nulloutput(struct ifnet *, struct mbuf *,
    954  1.122    dyoung 	    const struct sockaddr *, struct rtentry *);
    955  1.114   thorpej void	if_nullinput(struct ifnet *, struct mbuf *);
    956  1.114   thorpej void	if_nullstart(struct ifnet *);
    957  1.123  christos int	if_nullioctl(struct ifnet *, u_long, void *);
    958  1.114   thorpej int	if_nullinit(struct ifnet *);
    959  1.114   thorpej void	if_nullstop(struct ifnet *, int);
    960  1.114   thorpej void	if_nullwatchdog(struct ifnet *);
    961  1.114   thorpej void	if_nulldrain(struct ifnet *);
    962   1.37    itojun #else
    963   1.37    itojun struct if_nameindex {
    964   1.37    itojun 	unsigned int	if_index;	/* 1, 2, ... */
    965   1.37    itojun 	char		*if_name;	/* null terminated name: "le0", ... */
    966   1.37    itojun };
    967   1.37    itojun 
    968   1.38    kleink #include <sys/cdefs.h>
    969   1.37    itojun __BEGIN_DECLS
    970  1.114   thorpej unsigned int if_nametoindex(const char *);
    971  1.114   thorpej char *	if_indextoname(unsigned int, char *);
    972  1.114   thorpej struct	if_nameindex * if_nameindex(void);
    973  1.114   thorpej void	if_freenameindex(struct if_nameindex *);
    974   1.37    itojun __END_DECLS
    975   1.93  jonathan #endif /* _KERNEL */ /* XXX really ALTQ? */
    976   1.93  jonathan 
    977   1.93  jonathan #ifdef _KERNEL
    978  1.149     rmind 
    979  1.165     rmind #define	IFNET_FIRST()			TAILQ_FIRST(&ifnet_list)
    980  1.164     rmind #define	IFNET_NEXT(__ifp)		TAILQ_NEXT((__ifp), if_list)
    981  1.165     rmind #define	IFNET_FOREACH(__ifp)		TAILQ_FOREACH(__ifp, &ifnet_list, if_list)
    982  1.164     rmind #define	IFADDR_FIRST(__ifp)		TAILQ_FIRST(&(__ifp)->if_addrlist)
    983  1.164     rmind #define	IFADDR_NEXT(__ifa)		TAILQ_NEXT((__ifa), ifa_list)
    984  1.164     rmind #define	IFADDR_FOREACH(__ifa, __ifp)	TAILQ_FOREACH(__ifa, \
    985  1.164     rmind 					    &(__ifp)->if_addrlist, ifa_list)
    986  1.164     rmind #define	IFADDR_EMPTY(__ifp)		TAILQ_EMPTY(&(__ifp)->if_addrlist)
    987  1.164     rmind 
    988  1.165     rmind extern struct ifnet_head ifnet_list;
    989  1.165     rmind extern struct ifnet *lo0ifp;
    990  1.165     rmind 
    991  1.149     rmind ifnet_t *	if_byindex(u_int);
    992  1.149     rmind 
    993   1.93  jonathan /*
    994   1.93  jonathan  * ifq sysctl support
    995   1.93  jonathan  */
    996  1.114   thorpej int	sysctl_ifq(int *name, u_int namelen, void *oldp,
    997   1.93  jonathan 		       size_t *oldlenp, void *newp, size_t newlen,
    998  1.114   thorpej 		       struct ifqueue *ifq);
    999   1.93  jonathan /* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */
   1000   1.93  jonathan #define IFQCTL_LEN 1
   1001   1.93  jonathan #define IFQCTL_MAXLEN 2
   1002   1.93  jonathan #define IFQCTL_PEAK 3
   1003   1.93  jonathan #define IFQCTL_DROPS 4
   1004   1.93  jonathan #define IFQCTL_MAXID 5
   1005   1.93  jonathan 
   1006   1.15       jtc #endif /* _KERNEL */
   1007   1.93  jonathan 
   1008   1.93  jonathan #ifdef _NETBSD_SOURCE
   1009   1.93  jonathan /*
   1010  1.101     perry  * sysctl for ifq (per-protocol packet input queue variant of ifqueue)
   1011   1.93  jonathan  */
   1012   1.93  jonathan #define CTL_IFQ_NAMES  { \
   1013   1.93  jonathan 	{ 0, 0 }, \
   1014   1.93  jonathan 	{ "len", CTLTYPE_INT }, \
   1015   1.93  jonathan 	{ "maxlen", CTLTYPE_INT }, \
   1016   1.93  jonathan 	{ "peak", CTLTYPE_INT }, \
   1017   1.93  jonathan 	{ "drops", CTLTYPE_INT }, \
   1018   1.93  jonathan }
   1019   1.93  jonathan #endif /* _NETBSD_SOURCE */
   1020   1.28     chuck #endif /* !_NET_IF_H_ */
   1021