/*      $OpenBSD: if.h,v 1.223 2025/12/09 03:33:06 dlg 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/cdefs.h>

/*
 * Length of interface external name, including terminating '\0'.
 * Note: this is the same size as a generic device's external name.
 */
#define IF_NAMESIZE     16

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);
void    if_freenameindex(struct if_nameindex *);
__END_DECLS
#endif

#if __BSD_VISIBLE

#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>

/*
 * 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 */
};

#define MCLPOOLS        8               /* number of cluster pools */

struct if_rxring {
        int     rxr_adjusted;
        u_int   rxr_alive;
        u_int   rxr_cwm;
        u_int   rxr_lwm;
        u_int   rxr_hwm;
};

struct if_rxring_info {
        char    ifr_name[16];           /* name of the ring */
        u_int   ifr_size;               /* size of the packets on the ring */
        struct if_rxring ifr_info;
};

/* Structure used in SIOCGIFRXR request. */
struct if_rxrinfo {
        u_int   ifri_total;
        struct if_rxring_info *ifri_entries;
};

/*
 * 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_int32_t       ifi_mtu;                /* maximum transmission unit */
        u_int32_t       ifi_metric;             /* routing metric (external only) */
        u_int32_t       ifi_rdomain;            /* routing instance */
        u_int64_t       ifi_baudrate;           /* linespeed */
        /* volatile statistics */
        u_int64_t       ifi_ipackets;           /* packets received on interface */
        u_int64_t       ifi_ierrors;            /* input errors on interface */
        u_int64_t       ifi_opackets;           /* packets sent on interface */
        u_int64_t       ifi_oerrors;            /* output errors on interface */
        u_int64_t       ifi_collisions;         /* collisions on csma interfaces */
        u_int64_t       ifi_ibytes;             /* total number of octets received */
        u_int64_t       ifi_obytes;             /* total number of octets sent */
        u_int64_t       ifi_imcasts;            /* packets received via multicast */
        u_int64_t       ifi_omcasts;            /* packets sent via multicast */
        u_int64_t       ifi_iqdrops;            /* dropped on input, this interface */
        u_int64_t       ifi_oqdrops;            /* dropped on output, this interface */
        u_int64_t       ifi_noproto;            /* destined for unsupported protocol */
        u_int32_t       ifi_capabilities;       /* interface capabilities */
        struct  timeval ifi_lastchange; /* last operational state change */
};

#define IFQ_NQUEUES     8
#define IFQ_MINPRIO     0
#define IFQ_MAXPRIO     IFQ_NQUEUES - 1
#define IFQ_DEFPRIO     3
#define IFQ_PRIO2TOS(_p) ((_p) << 5)
#define IFQ_TOS2PRIO(_t) ((_t) >> 5)

/*
 * Values for if_link_state.
 */
#define LINK_STATE_UNKNOWN      0       /* link unknown */
#define LINK_STATE_INVALID      1       /* link invalid */
#define LINK_STATE_DOWN         2       /* link is down */
#define LINK_STATE_KALIVE_DOWN  3       /* keepalive reports down */
#define LINK_STATE_UP           4       /* link is up */
#define LINK_STATE_HALF_DUPLEX  5       /* link is up and half duplex */
#define LINK_STATE_FULL_DUPLEX  6       /* link is up and full duplex */

#define LINK_STATE_IS_UP(_s)    \
                ((_s) >= LINK_STATE_UP || (_s) == LINK_STATE_UNKNOWN)

/*
 * Status bit descriptions for the various interface types.
 */
struct if_status_description {
        u_char  ifs_type;
        u_char  ifs_state;
        const char *ifs_string;
};

#define LINK_STATE_DESC_MATCH(_ifs, _t, _s)                             \
        (((_ifs)->ifs_type == (_t) || (_ifs)->ifs_type == 0) &&         \
            (_ifs)->ifs_state == (_s))


#define LINK_STATE_DESCRIPTIONS {                                       \
        { IFT_ETHER, LINK_STATE_DOWN, "no carrier" },                   \
                                                                        \
        { IFT_IEEE80211, LINK_STATE_DOWN, "no network" },               \
                                                                        \
        { IFT_PPP, LINK_STATE_DOWN, "no carrier" },                     \
                                                                        \
        { IFT_CARP, LINK_STATE_DOWN, "backup" },                        \
        { IFT_CARP, LINK_STATE_UP, "master" },                          \
        { IFT_CARP, LINK_STATE_HALF_DUPLEX, "master" },                 \
        { IFT_CARP, LINK_STATE_FULL_DUPLEX, "master" },                 \
                                                                        \
        { 0, LINK_STATE_UP, "active" },                                 \
        { 0, LINK_STATE_HALF_DUPLEX, "active" },                        \
        { 0, LINK_STATE_FULL_DUPLEX, "active" },                        \
                                                                        \
        { 0, LINK_STATE_UNKNOWN, "unknown" },                           \
        { 0, LINK_STATE_INVALID, "invalid" },                           \
        { 0, LINK_STATE_DOWN, "down" },                                 \
        { 0, LINK_STATE_KALIVE_DOWN, "keepalive down" },                \
        { 0, 0, NULL }                                                  \
}

/* Traditional BSD name for length of interface external name. */
#define IFNAMSIZ        IF_NAMESIZE

/*
 * Length of interface description, including terminating '\0'.
 */
#define IFDESCRSIZE     64

/*
 * Interface flags can be either owned by the stack or the driver.  The
 * symbols below document who is toggling which flag.
 *
 *      I       immutable after creation
 *      N       written by the stack (upon user request)
 *      d       written by the driver
 *      c       for userland compatibility only
 */
#define IFF_UP          0x1             /* [N] interface is up */
#define IFF_BROADCAST   0x2             /* [I] broadcast address valid */
#define IFF_DEBUG       0x4             /* [N] turn on debugging */
#define IFF_LOOPBACK    0x8             /* [I] is a loopback net */
#define IFF_POINTOPOINT 0x10            /* [I] is point-to-point link */
#define IFF_STATICARP   0x20            /* [N] only static ARP */
#define IFF_RUNNING     0x40            /* [d] resources allocated */
#define IFF_NOARP       0x80            /* [N] no address resolution protocol */
#define IFF_PROMISC     0x100           /* [N] receive all packets */
#define IFF_ALLMULTI    0x200           /* [d] receive all multicast packets */
#define IFF_OACTIVE     0x400           /* [c] transmission in progress */
#define IFF_SIMPLEX     0x800           /* [I] can't hear own transmissions */
#define IFF_LINK0       0x1000          /* [N] per link layer defined bit */
#define IFF_LINK1       0x2000          /* [N] per link layer defined bit */
#define IFF_LINK2       0x4000          /* [N] per link layer defined bit */
#define IFF_MULTICAST   0x8000          /* [I] supports multicast */

/* flags set internally only: */
#define IFF_CANTCHANGE \
        (IFF_BROADCAST|IFF_LOOPBACK|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
            IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI)

#define IFXF_MPSAFE             0x1     /* [I] if_start is mpsafe */
#define IFXF_CLONED             0x2     /* [I] pseudo interface */
#define IFXF_AUTOCONF6TEMP      0x4     /* [N] v6 temporary addrs enabled */
#define IFXF_MPLS               0x8     /* [N] supports MPLS */
#define IFXF_WOL                0x10    /* [N] wake on lan enabled */
#define IFXF_AUTOCONF6          0x20    /* [N] v6 autoconf enabled */
#define IFXF_INET6_NOSOII       0x40    /* [N] don't do RFC 7217 */
#define IFXF_AUTOCONF4          0x80    /* [N] v4 autoconf (aka dhcp) enabled */
#define IFXF_MONITOR            0x100   /* [N] only used for bpf */
#define IFXF_LRO                0x200   /* [N] TCP large recv offload */

#define IFXF_CANTCHANGE \
        (IFXF_MPSAFE|IFXF_CLONED)

/*
 * Some convenience macros used for setting ifi_baudrate.
 */
#define IF_Kbps(x)      ((x) * 1000ULL)                 /* kilobits/sec. */
#define IF_Mbps(x)      (IF_Kbps((x) * 1000ULL))        /* megabits/sec. */
#define IF_Gbps(x)      (IF_Mbps((x) * 1000ULL))        /* 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_VLAN_MTU          0x00000010      /* VLAN-compatible MTU */
#define IFCAP_VLAN_HWTAGGING    0x00000020      /* hardware VLAN tag support */
#define IFCAP_VLAN_HWOFFLOAD    0x00000040      /* hw offload w/ inline tag */
#define IFCAP_CSUM_TCPv6        0x00000080      /* can do IPv6/TCP checksums */
#define IFCAP_CSUM_UDPv6        0x00000100      /* can do IPv6/UDP checksums */
#define IFCAP_TSOv4             0x00001000      /* IPv4/TCP segment offload */
#define IFCAP_TSOv6             0x00002000      /* IPv6/TCP segment offload */
#define IFCAP_LRO               0x00004000      /* TCP large recv offload */
#define IFCAP_WOL               0x00008000      /* can do wake on lan */

#define IFCAP_CSUM_MASK         (IFCAP_CSUM_IPv4 | IFCAP_CSUM_TCPv4 | \
    IFCAP_CSUM_UDPv4 | IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6)

/* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */
#define IFQCTL_LEN 1
#define IFQCTL_MAXLEN 2
#define IFQCTL_DROPS 3
#define IFQCTL_CONGESTION 4
#define IFQCTL_MAXID 5

/* sysctl for ifq (per-protocol packet input queue variant of ifqueue) */
#define CTL_IFQ_NAMES  { \
        { 0, 0 }, \
        { "len", CTLTYPE_INT }, \
        { "maxlen", CTLTYPE_INT }, \
        { "drops", CTLTYPE_INT }, \
        { "congestion", CTLTYPE_INT }, \
}

/*
 * 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 */
        u_short ifm_hdrlen;     /* sizeof(if_msghdr) to skip over the header */
        u_short ifm_index;      /* index for associated ifp */
        u_short ifm_tableid;    /* routing table id */
        u_char  ifm_pad1;
        u_char  ifm_pad2;
        int     ifm_addrs;      /* like rtm_addrs */
        int     ifm_flags;      /* value of if_flags */
        int     ifm_xflags;
        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 */
        u_short ifam_hdrlen;    /* sizeof(ifa_msghdr) to skip over the header */
        u_short ifam_index;     /* index for associated ifp */
        u_short ifam_tableid;   /* routing table id */
        u_char  ifam_pad1;
        u_char  ifam_pad2;
        int     ifam_addrs;     /* like rtm_addrs */
        int     ifam_flags;     /* value of ifa_flags */
        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_hdrlen;    /* sizeof(if_announcemsghdr) to skip header */
        u_short ifan_index;     /* index for associated ifp */
        u_short ifan_what;      /* what type of announcement */
        char    ifan_name[IFNAMSIZ];    /* if name, e.g. "en0" */
};

#define IFAN_ARRIVAL    0       /* interface arrival */
#define IFAN_DEPARTURE  1       /* interface departure */

/* message format used to pass 80211 interface info */
struct if_ieee80211_data {
        uint8_t         ifie_channel;   /* IEEE80211_CHAN_MAX  == 255 */
        uint8_t         ifie_nwid_len;
        uint32_t        ifie_flags;     /* ieee80211com.ic_flags */
        uint32_t        ifie_xflags;    /* ieee80211com.ic xflags */
        uint8_t         ifie_nwid[32];  /* IEEE80211_NWID_LEN */
        uint8_t         ifie_addr[6];   /* IEEE80211_ADDR_LEN */
};

struct if_ieee80211_msghdr {
        uint16_t        ifim_msglen;
        uint8_t         ifim_version;
        uint8_t         ifim_type;
        uint16_t        ifim_hdrlen;
        uint16_t        ifim_index;
        uint16_t        ifim_tableid;

        struct if_ieee80211_data        ifim_ifie;
};

/* message format used to pass interface name to index mappings */
struct if_nameindex_msg {
        unsigned int    if_index;
        char            if_name[IFNAMSIZ];
};

/*
 * interface groups
 */

#define IFG_ALL         "all"           /* group contains all interfaces */
#define IFG_EGRESS      "egress"        /* if(s) default route(s) point to */

struct ifg_req {
        union {
                char                     ifgrqu_group[IFNAMSIZ];
                char                     ifgrqu_member[IFNAMSIZ];
        } ifgrq_ifgrqu;
#define ifgrq_group     ifgrq_ifgrqu.ifgrqu_group
#define ifgrq_member    ifgrq_ifgrqu.ifgrqu_member
};

struct ifg_attrib {
        int     ifg_carp_demoted;
};

/*
 * 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;
                struct  ifg_attrib       ifgru_attrib;
        } ifgr_ifgru;
#define ifgr_group      ifgr_ifgru.ifgru_group
#define ifgr_groups     ifgr_ifgru.ifgru_groups
#define ifgr_attrib     ifgr_ifgru.ifgru_attrib
};

/*
 * 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;
                int64_t                 ifru_vnetid;
                uint64_t                ifru_media;
                caddr_t                 ifru_data;
                unsigned int            ifru_index;
        } 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_hardmtu     ifr_ifru.ifru_metric    /* hardmtu (overload) */
#define ifr_media       ifr_ifru.ifru_media     /* media options */
#define ifr_rdomainid   ifr_ifru.ifru_metric    /* VRF instance (overload) */
#define ifr_vnetid      ifr_ifru.ifru_vnetid    /* Virtual Net Id */
#define ifr_ttl         ifr_ifru.ifru_metric    /* tunnel TTL (overload) */
#define ifr_df          ifr_ifru.ifru_metric    /* tunnel DF (overload) */
#define ifr_data        ifr_ifru.ifru_data      /* for use by interface */
#define ifr_index       ifr_ifru.ifru_index     /* interface index */
#define ifr_llprio      ifr_ifru.ifru_metric    /* link layer priority */
#define ifr_hdrprio     ifr_ifru.ifru_metric    /* header prio field config */
#define ifr_pwe3        ifr_ifru.ifru_metric    /* PWE3 type */
};

#define IF_HDRPRIO_MIN          IFQ_MINPRIO
#define IF_HDRPRIO_MAX          IFQ_MAXPRIO
#define IF_HDRPRIO_PACKET       -1      /* use mbuf prio */
#define IF_HDRPRIO_PAYLOAD      -2      /* copy payload prio */
#define IF_HDRPRIO_OUTER        -3      /* use outer prio */

#define IF_PWE3_ETHERNET        1       /* ethernet or ethernet tagged */
#define IF_PWE3_IP              2       /* IP layer 2 */

struct ifaliasreq {
        char    ifra_name[IFNAMSIZ];            /* if name, e.g. "en0" */
        union {
                struct  sockaddr ifrau_addr;
                int     ifrau_align;
         } ifra_ifrau;
#ifndef ifra_addr
#define ifra_addr       ifra_ifrau.ifrau_addr
#endif
        struct  sockaddr ifra_dstaddr;
#define ifra_broadaddr  ifra_dstaddr
        struct  sockaddr ifra_mask;
};

struct ifmediareq {
        char            ifm_name[IFNAMSIZ];     /* if name, e.g. "en0" */
        uint64_t        ifm_current;            /* get/set current media options */
        uint64_t        ifm_mask;               /* don't care mask */
        uint64_t        ifm_status;             /* media status */
        uint64_t        ifm_active;             /* active options */
        int             ifm_count;              /* # entries in ifm_ulist array */
        uint64_t        *ifm_ulist;             /* media words */
};

struct ifkalivereq {
        char    ikar_name[IFNAMSIZ];            /* if name, e.g. "en0" */
        int     ikar_timeo;
        int     ikar_cnt;
};

/*
 * 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 */
};

/* SIOCIFAFDETACH */
struct if_afreq {
        char            ifar_name[IFNAMSIZ];
        sa_family_t     ifar_af;
};

/* SIOC[SG]IFPARENT */
struct if_parent {
        char            ifp_name[IFNAMSIZ];
        char            ifp_parent[IFNAMSIZ];
};

/* SIOCGIFSFFPAGE */

#define IFSFF_ADDR_EEPROM       0xa0
#define IFSFF_ADDR_DDM          0xa2

#define IFSFF_DATA_LEN          256

struct if_sffpage {
        char             sff_ifname[IFNAMSIZ];          /* u -> k */
        uint8_t          sff_addr;                      /* u -> k */
        uint8_t          sff_page;                      /* u -> k */
        uint8_t          sff_data[IFSFF_DATA_LEN];      /* k -> u */
};

#include <net/if_arp.h>

#ifdef _KERNEL

#define IF_MAX_VECTORS          8

struct socket;
struct ifnet;
struct ifq_ops;

void    if_alloc_sadl(struct ifnet *);
void    if_free_sadl(struct ifnet *);
void    if_attach(struct ifnet *);
void    if_attach_queues(struct ifnet *, unsigned int);
void    if_attach_iqueues(struct ifnet *, unsigned int);
void    if_attach_ifq(struct ifnet *, const struct ifq_ops *, void *);
void    if_attachhead(struct ifnet *);
void    if_deactivate(struct ifnet *);
void    if_detach(struct ifnet *);
void    if_down(struct ifnet *);
void    if_downall(void);
void    if_link_state_change(struct ifnet *);
void    if_up(struct ifnet *);
void    if_getdata(struct ifnet *, struct if_data *);
void    ifinit(void);
int     ifioctl(struct socket *, u_long, caddr_t, struct proc *);
int     ifpromisc(struct ifnet *, int);
int     ifsetlro(struct ifnet *, int);
struct  ifg_group *if_creategroup(const char *);
int     if_addgroup(struct ifnet *, const char *);
int     if_delgroup(struct ifnet *, const char *);
void    if_group_routechange(const struct sockaddr *, const struct sockaddr *);
struct  ifnet *if_unit(const char *);
struct  ifnet *if_get(unsigned int);
struct  ifnet *if_ref(struct ifnet *);
struct  ifnet *if_get_smr(unsigned int);
void    if_put(struct ifnet *);
void    ifnewlladdr(struct ifnet *);
void    if_congestion(void);
int     if_congested(void);
__dead void     unhandled_af(int);
int     if_setlladdr(struct ifnet *, const uint8_t *);
void    softnet_init(void);
void    softnet_percpu(void);
unsigned int
        softnet_count(void);
struct taskq *
        net_tq(unsigned int);
void    net_tq_barriers(const char *);

#endif /* _KERNEL */

#endif /* __BSD_VISIBLE */

#endif /* _NET_IF_H_ */