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|
/* $OpenBSD: if.h,v 1.58 2004/10/14 21:28:15 mickey Exp $ */
/* $NetBSD: if.h,v 1.23 1996/05/07 02:40:27 thorpej Exp $ */
/*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)if.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _NET_IF_H_
#define _NET_IF_H_
#include <sys/queue.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>
struct mbuf;
struct proc;
struct rtentry;
struct socket;
struct ether_header;
struct arpcom;
struct rt_addrinfo;
/*
* 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);
int (*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 */
u_char ifi_link_state; /* current link state */
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 */
};
/*
* 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;
int ifq_congestion;
};
/*
* 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 */
/*
* 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 */
/*
* 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
/*
* Length of interface description, including terminating '\0'.
*/
#define IFDESCRSIZE 64
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 */
TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */
struct hook_desc_head *if_addrhooks; /* address change callbacks */
char if_xname[IFNAMSIZ]; /* external name (name + unit) */
int if_pcount; /* number of promiscuous listeners */
caddr_t if_bpf; /* packet filter structure */
caddr_t if_bridge; /* bridge structure */
caddr_t if_carp; /* carp 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. */
struct if_data if_data; /* stats and other data about if */
int if_capabilities; /* interface capabilities */
char if_description[IFDESCRSIZE]; /* interface description */
/* procedure handles */
/* output routine (enqueue) */
int (*if_output)(struct ifnet *, struct mbuf *, struct sockaddr *,
struct rtentry *);
/* initiate output routine */
void (*if_start)(struct ifnet *);
/* ioctl routine */
int (*if_ioctl)(struct ifnet *, u_long, caddr_t);
/* init routine */
int (*if_init)(struct ifnet *);
/* XXX bus reset routine */
int (*if_reset)(struct ifnet *);
/* timer routine */
void (*if_watchdog)(struct ifnet *);
struct ifaltq if_snd; /* output queue (includes altq) */
struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */
void *if_afdata[AF_MAX];
};
#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 0x1 /* interface is up */
#define IFF_BROADCAST 0x2 /* broadcast address valid */
#define IFF_DEBUG 0x4 /* turn on debugging */
#define IFF_LOOPBACK 0x8 /* is a loopback net */
#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
#define IFF_RUNNING 0x40 /* resources allocated */
#define IFF_NOARP 0x80 /* no address resolution protocol */
#define IFF_PROMISC 0x100 /* receive all packets */
#define IFF_ALLMULTI 0x200 /* receive all multicast packets */
#define IFF_OACTIVE 0x400 /* transmission in progress */
#define IFF_SIMPLEX 0x800 /* can't hear own transmissions */
#define IFF_LINK0 0x1000 /* 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)
/*
* Some convenience macros used for setting ifi_baudrate.
*/
#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 0x00000001 /* can do IPv4 header csum */
#define IFCAP_CSUM_TCPv4 0x00000002 /* can do IPv4/TCP csum */
#define IFCAP_CSUM_UDPv4 0x00000004 /* can do IPv4/UDP csum */
#define IFCAP_IPSEC 0x00000008 /* can do IPsec */
#define IFCAP_VLAN_MTU 0x00000010 /* VLAN-compatible MTU */
#define IFCAP_VLAN_HWTAGGING 0x00000020 /* hardware VLAN tag support */
#define IFCAP_IPCOMP 0x00000040 /* can do IPcomp */
#define IFCAP_JUMBO_MTU 0x00000080 /* 9000 byte MTU supported */
#define IFCAP_CSUM_TCPv6 0x00000100 /* can do IPv6/TCP checksums */
#define IFCAP_CSUM_UDPv6 0x00000200 /* can do IPv6/UDP checksums */
#define IFCAP_CSUM_TCPv4_Rx 0x00000400 /* can do IPv4/TCP (Rx only) */
#define IFCAP_CSUM_UDPv4_Rx 0x00000800 /* 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_INPUT_ENQUEUE(ifq, m) { \
if (IF_QFULL(ifq)) { \
IF_DROP(ifq); \
m_freem(m); \
if (!ifq->ifq_congestion) \
if_congestion(ifq); \
} else \
IF_ENQUEUE(ifq, m); \
}
#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 */
/*
* 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 */
/* check or clean routes (+ or -)'d */
void (*ifa_rtrequest)(int, struct rtentry *, struct rt_addrinfo *);
u_int ifa_flags; /* mostly rt_flags for cloning */
u_int ifa_refcnt; /* count of references */
int ifa_metric; /* cost of going out this interface */
};
#define IFA_ROUTE RTF_UP /* route installed */
/*
* Message format for use in obtaining information about interfaces
* from sysctl and the routing socket.
*/
struct if_msghdr {
u_short ifm_msglen; /* to skip over non-understood messages */
u_char ifm_version; /* future binary 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 */
};
/*
* 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 groups
*/
struct ifg_group {
char ifg_group[IFNAMSIZ];
u_int ifg_refcnt;
TAILQ_ENTRY(ifg_group) ifg_next;
};
struct ifg_list {
struct ifg_group *ifgl_group;
TAILQ_ENTRY(ifg_list) ifgl_next;
};
struct ifg_req {
char ifgrq_group[IFNAMSIZ];
};
/*
* Used to lookup groups for an interface
*/
struct ifgroupreq {
char ifgr_name[IFNAMSIZ];
u_int ifgr_len;
union {
char ifgru_group[IFNAMSIZ];
struct ifg_req *ifgru_groups;
} ifgr_ifgru;
#define ifgr_group ifgr_ifgru.ifgru_group
#define ifgr_groups ifgr_ifgru.ifgru_groups
};
/* XXX henning removes this 20050115, compat shitz */
struct oifgroup {
char ifg_group[IFNAMSIZ];
TAILQ_ENTRY(oifgroup) ifg_next;
};
struct oifgroupreq {
char ifgr_name[IFNAMSIZ];
u_int ifgr_len;
union {
char ifgru_group[IFNAMSIZ];
struct oifgroup *ifgru_groups;
} ifgr_ifgru;
};
/*
* 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;
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_metric /* mtu (overload) */
#define ifr_media ifr_ifru.ifru_metric /* media options (overload) */
#define ifr_data ifr_ifru.ifru_data /* for use by interface */
};
struct ifaliasreq {
char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
struct sockaddr ifra_addr;
struct sockaddr ifra_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 */
};
/*
* 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 */
};
struct if_nameindex {
unsigned int if_index;
char *if_name;
};
#ifndef _KERNEL
__BEGIN_DECLS
unsigned int if_nametoindex(const char *);
char *if_indextoname(unsigned int, char *);
struct if_nameindex *if_nameindex(void);
__END_DECLS
#define if_freenameindex(x) free(x)
#endif
#include <net/if_arp.h>
#ifdef _KERNEL
#define IFAFREE(ifa) \
do { \
if ((ifa)->ifa_refcnt <= 0) \
ifafree(ifa); \
else \
(ifa)->ifa_refcnt--; \
} while (0)
#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) ((ifq)->ifq_len == 0)
#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))
extern struct ifnet_head ifnet;
extern struct ifnet **ifindex2ifnet;
extern struct ifnet *lo0ifp;
extern int if_indexlim;
void ether_ifattach(struct ifnet *);
void ether_ifdetach(struct ifnet *);
int ether_ioctl(struct ifnet *, struct arpcom *, u_long, caddr_t);
void ether_input_mbuf(struct ifnet *, struct mbuf *);
void ether_input(struct ifnet *, struct ether_header *, struct mbuf *);
int ether_output(struct ifnet *,
struct mbuf *, struct sockaddr *, struct rtentry *);
char *ether_sprintf(u_char *);
void if_alloc_sadl(struct ifnet *);
void if_free_sadl(struct ifnet *);
void if_attach(struct ifnet *);
void if_attachdomain(void);
void if_attachtail(struct ifnet *);
void if_attachhead(struct ifnet *);
void if_detach(struct ifnet *);
void if_down(struct ifnet *);
void if_qflush(struct ifqueue *);
void if_slowtimo(void *);
void if_up(struct ifnet *);
int ifconf(u_long, caddr_t);
void ifinit(void);
int ifioctl(struct socket *, u_long, caddr_t, struct proc *);
int ifpromisc(struct ifnet *, int);
int if_addgroup(struct ifnet *, char *);
int if_delgroup(struct ifnet *, char *);
int if_getgroup(caddr_t, struct ifnet *);
struct ifnet *ifunit(const char *);
struct ifaddr *ifa_ifwithaddr(struct sockaddr *);
struct ifaddr *ifa_ifwithaf(int);
struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *);
struct ifaddr *ifa_ifwithnet(struct sockaddr *);
struct ifaddr *ifa_ifwithroute(int, struct sockaddr *,
struct sockaddr *);
struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *);
void ifafree(struct ifaddr *);
void link_rtrequest(int, struct rtentry *, struct rt_addrinfo *);
void if_clone_attach(struct if_clone *);
void if_clone_detach(struct if_clone *);
int if_clone_create(const char *);
int if_clone_destroy(const char *);
void if_congestion(struct ifqueue *);
int loioctl(struct ifnet *, u_long, caddr_t);
void loopattach(int);
int looutput(struct ifnet *,
struct mbuf *, struct sockaddr *, struct rtentry *);
void lortrequest(int, struct rtentry *, struct rt_addrinfo *);
#endif /* _KERNEL */
#endif /* _NET_IF_H_ */
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