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NetBSD/sys/net/if.h

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/* $NetBSD: if.h,v 1.74 2001/09/17 17:26:59 thorpej Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by William Studnemund and Jason R. Thorpe.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)if.h 8.3 (Berkeley) 2/9/95
*/
#ifndef _NET_IF_H_
#define _NET_IF_H_
#if !defined(_XOPEN_SOURCE)
#include <sys/queue.h>
#include <net/dlt.h>
#include <net/pfil.h>
/*
* Always include ALTQ glue here -- we use the ALTQ interface queue
* structure even when ALTQ is not configured into the kernel so that
* the size of struct ifnet does not changed based on the option. The
* ALTQ queue structure is API-compatible with the legacy ifqueue.
*/
#include <altq/if_altq.h>
/*
* Structures defining a network interface, providing a packet
* transport mechanism (ala level 0 of the PUP protocols).
*
* Each interface accepts output datagrams of a specified maximum
* length, and provides higher level routines with input datagrams
* received from its medium.
*
* Output occurs when the routine if_output is called, with four parameters:
* (*ifp->if_output)(ifp, m, dst, rt)
* Here m is the mbuf chain to be sent and dst is the destination address.
* The output routine encapsulates the supplied datagram if necessary,
* and then transmits it on its medium.
*
* On input, each interface unwraps the data received by it, and either
* places it on the input queue of a internetwork datagram routine
* and posts the associated software interrupt, or passes the datagram to a raw
* packet input routine.
*
* Routines exist for locating interfaces by their addresses
* or for locating a interface on a certain network, as well as more general
* routing and gateway routines maintaining information used to locate
* interfaces. These routines live in the files if.c and route.c
*/
/* XXX fast fix for SNMP, going away soon */
#include <sys/time.h>
#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
#endif
struct mbuf;
struct proc;
struct rtentry;
struct socket;
struct ether_header;
struct ifnet;
struct rt_addrinfo;
/*
* Length of interface external name, including terminating '\0'.
* Note: this is the same size as a generic device's external name.
*/
#define IFNAMSIZ 16
#define IF_NAMESIZE IFNAMSIZ
/*
* Structure describing a `cloning' interface.
*/
struct if_clone {
LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */
const char *ifc_name; /* name of device, e.g. `gif' */
size_t ifc_namelen; /* length of name */
int (*ifc_create)(struct if_clone *, int);
void (*ifc_destroy)(struct ifnet *);
};
#define IF_CLONE_INITIALIZER(name, create, destroy) \
{ { 0 }, name, sizeof(name) - 1, create, destroy }
/*
* Structure used to query names of interface cloners.
*/
struct if_clonereq {
int ifcr_total; /* total cloners (out) */
int ifcr_count; /* room for this many in user buffer */
char *ifcr_buffer; /* buffer for cloner names */
};
/*
* Structure defining statistics and other data kept regarding a network
* interface.
*/
struct if_data {
/* generic interface information */
u_char ifi_type; /* ethernet, tokenring, etc. */
u_char ifi_addrlen; /* media address length */
u_char ifi_hdrlen; /* media header length */
int ifi_link_state; /* current link state */
u_quad_t ifi_mtu; /* maximum transmission unit */
u_quad_t ifi_metric; /* routing metric (external only) */
u_quad_t ifi_baudrate; /* linespeed */
/* volatile statistics */
u_quad_t ifi_ipackets; /* packets received on interface */
u_quad_t ifi_ierrors; /* input errors on interface */
u_quad_t ifi_opackets; /* packets sent on interface */
u_quad_t ifi_oerrors; /* output errors on interface */
u_quad_t ifi_collisions; /* collisions on csma interfaces */
u_quad_t ifi_ibytes; /* total number of octets received */
u_quad_t ifi_obytes; /* total number of octets sent */
u_quad_t ifi_imcasts; /* packets received via multicast */
u_quad_t ifi_omcasts; /* packets sent via multicast */
u_quad_t ifi_iqdrops; /* dropped on input, this interface */
u_quad_t ifi_noproto; /* destined for unsupported protocol */
struct timeval ifi_lastchange; /* last operational state change */
};
/*
* Values for if_link_state.
*/
#define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */
#define LINK_STATE_DOWN 1 /* link is down */
#define LINK_STATE_UP 2 /* link is up */
#if defined(_KERNEL) && defined(COMPAT_14)
/* Pre-1.5 if_data struct */
struct if_data14 {
/* generic interface information */
u_char ifi_type; /* ethernet, tokenring, etc. */
u_char ifi_addrlen; /* media address length */
u_char ifi_hdrlen; /* media header length */
u_long ifi_mtu; /* maximum transmission unit */
u_long ifi_metric; /* routing metric (external only) */
u_long ifi_baudrate; /* linespeed */
/* volatile statistics */
u_long ifi_ipackets; /* packets received on interface */
u_long ifi_ierrors; /* input errors on interface */
u_long ifi_opackets; /* packets sent on interface */
u_long ifi_oerrors; /* output errors on interface */
u_long ifi_collisions; /* collisions on csma interfaces */
u_long ifi_ibytes; /* total number of octets received */
u_long ifi_obytes; /* total number of octets sent */
u_long ifi_imcasts; /* packets received via multicast */
u_long ifi_omcasts; /* packets sent via multicast */
u_long ifi_iqdrops; /* dropped on input, this interface */
u_long ifi_noproto; /* destined for unsupported protocol */
struct timeval ifi_lastchange; /* last operational state change */
};
#endif /* _KERNEL && COMPAT_14 */
/*
* Structure defining a queue for a network interface.
*/
struct ifqueue {
struct mbuf *ifq_head;
struct mbuf *ifq_tail;
int ifq_len;
int ifq_maxlen;
int ifq_drops;
};
/*
* Structure defining a queue for a network interface.
*
* (Would like to call this struct ``if'', but C isn't PL/1.)
*/
TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */
struct ifnet { /* and the entries */
void *if_softc; /* lower-level data for this if */
TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */
TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */
char if_xname[IFNAMSIZ]; /* external name (name + unit) */
int if_pcount; /* number of promiscuous listeners */
caddr_t if_bpf; /* packet filter structure */
u_short if_index; /* numeric abbreviation for this if */
short if_timer; /* time 'til if_watchdog called */
short if_flags; /* up/down, broadcast, etc. */
short if__pad1; /* be nice to m68k ports */
struct if_data if_data; /* statistics and other data about if */
/*
* Procedure handles. If you add more of these, don't forget the
* corresponding NULL stub in if.c.
*/
int (*if_output) /* output routine (enqueue) */
__P((struct ifnet *, struct mbuf *, struct sockaddr *,
struct rtentry *));
void (*if_input) /* input routine (from h/w driver) */
__P((struct ifnet *, struct mbuf *));
void (*if_start) /* initiate output routine */
__P((struct ifnet *));
int (*if_ioctl) /* ioctl routine */
__P((struct ifnet *, u_long, caddr_t));
int (*if_init) /* init routine */
__P((struct ifnet *));
void (*if_stop) /* stop routine */
__P((struct ifnet *, int));
void (*if_watchdog) /* timer routine */
__P((struct ifnet *));
void (*if_drain) /* routine to release resources */
__P((struct ifnet *));
struct ifaltq if_snd; /* output queue (includes altq) */
struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */
u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */
struct ifprefix *if_prefixlist; /* linked list of prefixes per if */
void *if_bridge; /* bridge glue */
int if_dlt; /* data link type (<net/dlt.h>) */
struct pfil_head if_pfil; /* filtering point */
uint64_t if_capabilities; /* interface capabilities */
uint64_t if_capenable; /* capabilities enabled */
/*
* These are pre-computed based on an interfaces enabled
* capabilities, for speed elsewhere.
*/
int if_csum_flags_tx; /* M_CSUM_* flags for Tx */
int if_csum_flags_rx; /* M_CSUM_* flags for Rx */
};
#define if_mtu if_data.ifi_mtu
#define if_type if_data.ifi_type
#define if_addrlen if_data.ifi_addrlen
#define if_hdrlen if_data.ifi_hdrlen
#define if_metric if_data.ifi_metric
#define if_link_state if_data.ifi_link_state
#define if_baudrate if_data.ifi_baudrate
#define if_ipackets if_data.ifi_ipackets
#define if_ierrors if_data.ifi_ierrors
#define if_opackets if_data.ifi_opackets
#define if_oerrors if_data.ifi_oerrors
#define if_collisions if_data.ifi_collisions
#define if_ibytes if_data.ifi_ibytes
#define if_obytes if_data.ifi_obytes
#define if_imcasts if_data.ifi_imcasts
#define if_omcasts if_data.ifi_omcasts
#define if_iqdrops if_data.ifi_iqdrops
#define if_noproto if_data.ifi_noproto
#define if_lastchange if_data.ifi_lastchange
#define IFF_UP 0x0001 /* interface is up */
#define IFF_BROADCAST 0x0002 /* broadcast address valid */
#define IFF_DEBUG 0x0004 /* turn on debugging */
#define IFF_LOOPBACK 0x0008 /* is a loopback net */
#define IFF_POINTOPOINT 0x0010 /* interface is point-to-point link */
#define IFF_NOTRAILERS 0x0020 /* avoid use of trailers */
#define IFF_RUNNING 0x0040 /* resources allocated */
#define IFF_NOARP 0x0080 /* no address resolution protocol */
#define IFF_PROMISC 0x0100 /* receive all packets */
#define IFF_ALLMULTI 0x0200 /* receive all multicast packets */
#define IFF_OACTIVE 0x0400 /* transmission in progress */
#define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */
#define IFF_LINK0 0x1000 /* per link layer defined bit */
#define IFF_LINK1 0x2000 /* per link layer defined bit */
#define IFF_LINK2 0x4000 /* per link layer defined bit */
#define IFF_MULTICAST 0x8000 /* supports multicast */
/* flags set internally only: */
#define IFF_CANTCHANGE \
(IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC)
/*
* Some convenience macros used for setting ifi_baudrate.
* XXX 1000 vs. 1024? --thorpej@netbsd.org
*/
#define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */
#define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */
#define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */
/* Capabilities that interfaces can advertise. */
#define IFCAP_CSUM_IPv4 0x0001 /* can do IPv4 header checksums */
#define IFCAP_CSUM_TCPv4 0x0002 /* can do IPv4/TCP checksums */
#define IFCAP_CSUM_UDPv4 0x0004 /* can do IPv4/UDP checksums */
#define IFCAP_CSUM_TCPv6 0x0008 /* can do IPv6/TCP checksums */
#define IFCAP_CSUM_UDPv6 0x0010 /* can do IPv6/UDP checksums */
#define IFCAP_CSUM_TCPv4_Rx 0x0020 /* can do IPv4/TCP (Rx only) */
#define IFCAP_CSUM_UDPv4_Rx 0x0040 /* can do IPv4/UDP (Rx only) */
/*
* Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)
* input routines have queues of messages stored on ifqueue structures
* (defined above). Entries are added to and deleted from these structures
* by these macros, which should be called with ipl raised to splimp().
*/
#define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
#define IF_DROP(ifq) ((ifq)->ifq_drops++)
#define IF_ENQUEUE(ifq, m) { \
(m)->m_nextpkt = 0; \
if ((ifq)->ifq_tail == 0) \
(ifq)->ifq_head = m; \
else \
(ifq)->ifq_tail->m_nextpkt = m; \
(ifq)->ifq_tail = m; \
(ifq)->ifq_len++; \
}
#define IF_PREPEND(ifq, m) { \
(m)->m_nextpkt = (ifq)->ifq_head; \
if ((ifq)->ifq_tail == 0) \
(ifq)->ifq_tail = (m); \
(ifq)->ifq_head = (m); \
(ifq)->ifq_len++; \
}
#define IF_DEQUEUE(ifq, m) { \
(m) = (ifq)->ifq_head; \
if (m) { \
if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \
(ifq)->ifq_tail = 0; \
(m)->m_nextpkt = 0; \
(ifq)->ifq_len--; \
} \
}
#define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
#define IF_PURGE(ifq) \
do { \
struct mbuf *__m0; \
\
for (;;) { \
IF_DEQUEUE((ifq), __m0); \
if (__m0 == NULL) \
break; \
else \
m_freem(__m0); \
} \
} while (0)
#define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0)
#define IFQ_MAXLEN 50
#define IFNET_SLOWHZ 1 /* granularity is 1 second */
/*
* Structure defining statistics and other data kept regarding an address
* on a network interface.
*/
struct ifaddr_data {
int64_t ifad_inbytes;
int64_t ifad_outbytes;
};
/*
* The ifaddr structure contains information about one address
* of an interface. They are maintained by the different address families,
* are allocated and attached when an address is set, and are linked
* together so all addresses for an interface can be located.
*/
struct ifaddr {
struct sockaddr *ifa_addr; /* address of interface */
struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
struct sockaddr *ifa_netmask; /* used to determine subnet */
struct ifnet *ifa_ifp; /* back-pointer to interface */
TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */
struct ifaddr_data ifa_data; /* statistics on the address */
void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
__P((int, struct rtentry *, struct rt_addrinfo *));
u_int ifa_flags; /* mostly rt_flags for cloning */
int ifa_refcnt; /* count of references */
int ifa_metric; /* cost of going out this interface */
};
#define IFA_ROUTE RTF_UP /* 0x01 *//* route installed */
/*
* The prefix structure contains information about one prefix
* of an interface. They are maintained by the different address families,
* are allocated and attached when an prefix or an address is set,
* and are linked together so all prfefixes for an interface can be located.
*/
struct ifprefix {
struct sockaddr *ifpr_prefix; /* prefix of interface */
struct ifnet *ifpr_ifp; /* back-pointer to interface */
struct ifprefix *ifpr_next;
u_char ifpr_plen; /* prefix length in bits */
u_char ifpr_type; /* protocol dependent prefix type */
};
/*
* Message format for use in obtaining information about interfaces
* from sysctl and the routing socket.
*/
struct if_msghdr {
u_short ifm_msglen; /* to skip over non-understood messages */
u_char ifm_version; /* future binary compatibility */
u_char ifm_type; /* message type */
int ifm_addrs; /* like rtm_addrs */
int ifm_flags; /* value of if_flags */
u_short ifm_index; /* index for associated ifp */
struct if_data ifm_data;/* statistics and other data about if */
};
#if defined(_KERNEL) && defined(COMPAT_14)
/* pre-1.5 if_msghdr (ifm_data changed) */
struct if_msghdr14 {
u_short ifm_msglen; /* to skip over non-understood messages */
u_char ifm_version; /* future binary compatibility */
u_char ifm_type; /* message type */
int ifm_addrs; /* like rtm_addrs */
int ifm_flags; /* value of if_flags */
u_short ifm_index; /* index for associated ifp */
struct if_data14 ifm_data; /* statistics and other data about if */
};
#endif /* _KERNEL && COMPAT_14 */
/*
* Message format for use in obtaining information about interface addresses
* from sysctl and the routing socket.
*/
struct ifa_msghdr {
u_short ifam_msglen; /* to skip over non-understood messages */
u_char ifam_version; /* future binary compatibility */
u_char ifam_type; /* message type */
int ifam_addrs; /* like rtm_addrs */
int ifam_flags; /* value of ifa_flags */
u_short ifam_index; /* index for associated ifp */
int ifam_metric; /* value of ifa_metric */
};
/*
* Message format announcing the arrival or departure of a network interface.
*/
struct if_announcemsghdr {
u_short ifan_msglen; /* to skip over non-understood messages */
u_char ifan_version; /* future binary compatibility */
u_char ifan_type; /* message type */
u_short ifan_index; /* index for associated ifp */
char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
u_short ifan_what; /* what type of announcement */
};
#define IFAN_ARRIVAL 0 /* interface arrival */
#define IFAN_DEPARTURE 1 /* interface departure */
/*
* Interface request structure used for socket
* ioctl's. All interface ioctl's must have parameter
* definitions which begin with ifr_name. The
* remainder may be interface specific.
*/
struct ifreq {
char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
union {
struct sockaddr ifru_addr;
struct sockaddr ifru_dstaddr;
struct sockaddr ifru_broadaddr;
short ifru_flags;
int ifru_metric;
int ifru_mtu;
int ifru_dlt;
u_int ifru_value;
caddr_t ifru_data;
} ifr_ifru;
#define ifr_addr ifr_ifru.ifru_addr /* address */
#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
#define ifr_flags ifr_ifru.ifru_flags /* flags */
#define ifr_metric ifr_ifru.ifru_metric /* metric */
#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
#define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */
#define ifr_value ifr_ifru.ifru_value /* generic value */
#define ifr_media ifr_ifru.ifru_metric /* media options (overload) */
#define ifr_data ifr_ifru.ifru_data /* for use by interface */
};
struct ifcapreq {
char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
uint64_t ifcr_capabilities; /* supported capabiliites */
uint64_t ifcr_capenable; /* capabilities enabled */
};
struct ifaliasreq {
char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
struct sockaddr ifra_addr;
struct sockaddr ifra_dstaddr;
#define ifra_broadaddr ifra_dstaddr
struct sockaddr ifra_mask;
};
struct ifmediareq {
char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */
int ifm_current; /* current media options */
int ifm_mask; /* don't care mask */
int ifm_status; /* media status */
int ifm_active; /* active options */
int ifm_count; /* # entries in ifm_ulist
array */
int *ifm_ulist; /* media words */
};
struct ifdrv {
char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */
unsigned long ifd_cmd;
size_t ifd_len;
void *ifd_data;
};
/*
* Structure used in SIOCGIFCONF request.
* Used to retrieve interface configuration
* for machine (useful for programs which
* must know all networks accessible).
*/
struct ifconf {
int ifc_len; /* size of associated buffer */
union {
caddr_t ifcu_buf;
struct ifreq *ifcu_req;
} ifc_ifcu;
#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
};
/*
* Structure for SIOC[AGD]LIFADDR
*/
struct if_laddrreq {
char iflr_name[IFNAMSIZ];
unsigned int flags;
#define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */
unsigned int prefixlen; /* in/out */
struct sockaddr_storage addr; /* in/out */
struct sockaddr_storage dstaddr; /* out */
};
#include <net/if_arp.h>
#endif /* !_XOPEN_SOURCE */
#ifdef _KERNEL
#ifdef IFAREF_DEBUG
#define IFAREF(ifa) \
do { \
printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \
(ifa), ++(ifa)->ifa_refcnt); \
} while (0)
#define IFAFREE(ifa) \
do { \
if ((ifa)->ifa_refcnt <= 0) \
panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \
__LINE__, (ifa)); \
printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \
(ifa), --(ifa)->ifa_refcnt); \
if ((ifa)->ifa_refcnt == 0) \
ifafree(ifa); \
} while (0)
#else
#define IFAREF(ifa) (ifa)->ifa_refcnt++
#ifdef DIAGNOSTIC
#define IFAFREE(ifa) \
do { \
if ((ifa)->ifa_refcnt <= 0) \
panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \
__LINE__, (ifa)); \
if (--(ifa)->ifa_refcnt == 0) \
ifafree(ifa); \
} while (0)
#else
#define IFAFREE(ifa) \
do { \
if (--(ifa)->ifa_refcnt == 0) \
ifafree(ifa); \
} while (0)
#endif /* DIAGNOSTIC */
#endif /* IFAREF_DEBUG */
#ifdef ALTQ
#define ALTQ_DECL(x) x
#define IFQ_ENQUEUE(ifq, m, pattr, err) \
do { \
if (ALTQ_IS_ENABLED((ifq))) \
ALTQ_ENQUEUE((ifq), (m), (pattr), (err)); \
else { \
if (IF_QFULL((ifq))) { \
m_freem((m)); \
(err) = ENOBUFS; \
} else { \
IF_ENQUEUE((ifq), (m)); \
(err) = 0; \
} \
} \
if ((err)) \
(ifq)->ifq_drops++; \
} while (0)
#define IFQ_DEQUEUE(ifq, m) \
do { \
if (TBR_IS_ENABLED((ifq))) \
(m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \
else if (ALTQ_IS_ENABLED((ifq))) \
ALTQ_DEQUEUE((ifq), (m)); \
else \
IF_DEQUEUE((ifq), (m)); \
} while (0)
#define IFQ_POLL(ifq, m) \
do { \
if (TBR_IS_ENABLED((ifq))) \
(m) = tbr_dequeue((ifq), ALTDQ_POLL); \
else if (ALTQ_IS_ENABLED((ifq))) \
ALTQ_POLL((ifq), (m)); \
else \
IF_POLL((ifq), (m)); \
} while (0)
#define IFQ_PURGE(ifq) \
do { \
if (ALTQ_IS_ENABLED((ifq))) \
ALTQ_PURGE((ifq)); \
else \
IF_PURGE((ifq)); \
} while (0)
#define IFQ_SET_READY(ifq) \
do { \
(ifq)->altq_flags |= ALTQF_READY; \
} while (0)
#define IFQ_CLASSIFY(ifq, m, af, pa) \
do { \
if (ALTQ_IS_ENABLED((ifq))) { \
if (ALTQ_NEEDS_CLASSIFY((ifq))) \
(pa)->pattr_class = (*(ifq)->altq_classify) \
((ifq)->altq_clfier, (m), (af)); \
(pa)->pattr_af = (af); \
(pa)->pattr_hdr = mtod((m), caddr_t); \
} \
} while (0)
#else /* ! ALTQ */
#define ALTQ_DECL(x) /* nothing */
#define IFQ_ENQUEUE(ifq, m, pattr, err) \
do { \
if (IF_QFULL((ifq))) { \
m_freem((m)); \
(err) = ENOBUFS; \
} else { \
IF_ENQUEUE((ifq), (m)); \
(err) = 0; \
} \
if ((err)) \
(ifq)->ifq_drops++; \
} while (0)
#define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m))
#define IFQ_POLL(ifq, m) IF_POLL((ifq), (m))
#define IFQ_PURGE(ifq) IF_PURGE((ifq))
#define IFQ_SET_READY(ifq) /* nothing */
#define IFQ_CLASSIFY(ifq, m, af, pa) /* nothing */
#endif /* ALTQ */
#define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq))
#define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++)
#define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len)
#define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++)
#define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len))
struct ifnet_head ifnet;
extern struct ifnet **ifindex2ifnet;
#if 0
struct ifnet loif[];
#endif
extern int if_index;
char *ether_sprintf __P((const u_char *));
void if_alloc_sadl __P((struct ifnet *));
void if_free_sadl __P((struct ifnet *));
void if_attach __P((struct ifnet *));
void if_deactivate __P((struct ifnet *));
void if_detach __P((struct ifnet *));
void if_down __P((struct ifnet *));
void if_slowtimo __P((void *));
void if_up __P((struct ifnet *));
int ifconf __P((u_long, caddr_t));
void ifinit __P((void));
int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *));
int ifpromisc __P((struct ifnet *, int));
struct ifnet *ifunit __P((const char *));
struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *));
struct ifaddr *ifa_ifwithaf __P((int));
struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *));
struct ifaddr *ifa_ifwithnet __P((struct sockaddr *));
struct ifaddr *ifa_ifwithladdr __P((struct sockaddr *));
struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *,
struct sockaddr *));
struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *));
void ifafree __P((struct ifaddr *));
void link_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *));
void if_clone_attach __P((struct if_clone *));
void if_clone_detach __P((struct if_clone *));
int if_clone_create __P((const char *));
int if_clone_destroy __P((const char *));
int loioctl __P((struct ifnet *, u_long, caddr_t));
void loopattach __P((int));
int looutput __P((struct ifnet *,
struct mbuf *, struct sockaddr *, struct rtentry *));
void lortrequest __P((int, struct rtentry *, struct rt_addrinfo *));
/*
* These are exported because they're an easy way to tell if
* an interface is going away without having to burn a flag.
*/
int if_nulloutput __P((struct ifnet *, struct mbuf *,
struct sockaddr *, struct rtentry *));
void if_nullinput __P((struct ifnet *, struct mbuf *));
void if_nullstart __P((struct ifnet *));
int if_nullioctl __P((struct ifnet *, u_long, caddr_t));
int if_nullinit __P((struct ifnet *));
void if_nullstop __P((struct ifnet *, int));
void if_nullwatchdog __P((struct ifnet *));
void if_nulldrain __P((struct ifnet *));
#else
struct if_nameindex {
unsigned int if_index; /* 1, 2, ... */
char *if_name; /* null terminated name: "le0", ... */
};
#include <sys/cdefs.h>
__BEGIN_DECLS
unsigned int if_nametoindex __P((const char *));
char * if_indextoname __P((unsigned int, char *));
struct if_nameindex * if_nameindex __P((void));
void if_freenameindex __P((struct if_nameindex *));
__END_DECLS
#endif /* _KERNEL */
#endif /* !_NET_IF_H_ */
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