xnu-1699.22.81.tar.gz

[apple/xnu.git] / bsd / net / if_var.h

diff --git a/bsd/net/if_var.h b/bsd/net/if_var.h
index f23d8ff9b93ef64ddf7a34e6badccdfbf808fa40..a76aa7dbbbfbbebab8525cc5620e947d353264db 100644 (file)
--- a/bsd/net/if_var.h
+++ b/bsd/net/if_var.h
@@ -1,16 +1,19 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2011 Apple Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in

- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.

  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER


@@ -20,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 

- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  * Copyright (c) 1982, 1986, 1989, 1993
  */
 /*
  * Copyright (c) 1982, 1986, 1989, 1993


@@ -60,7 +63,22 @@
 
 #ifndef        _NET_IF_VAR_H_
 #define        _NET_IF_VAR_H_
 
 #ifndef        _NET_IF_VAR_H_
 #define        _NET_IF_VAR_H_

+

 #include <sys/appleapiopts.h>
 #include <sys/appleapiopts.h>

+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/queue.h>         /* get TAILQ macros */
+#ifdef KERNEL_PRIVATE
+#include <kern/locks.h>
+#endif /* KERNEL_PRIVATE */
+#ifdef PRIVATE
+#include <net/route.h>
+#endif
+
+#ifdef KERNEL
+#include <net/kpi_interface.h>
+#endif /* KERNEL */

 
 #ifdef __APPLE__
 #define APPLE_IF_FAM_LOOPBACK  1
 
 #ifdef __APPLE__
 #define APPLE_IF_FAM_LOOPBACK  1


@@ -76,7 +94,15 @@
 #define APPLE_IF_FAM_FAITH     11
 #define APPLE_IF_FAM_STF       12
 #define APPLE_IF_FAM_FIREWIRE  13
 #define APPLE_IF_FAM_FAITH     11
 #define APPLE_IF_FAM_STF       12
 #define APPLE_IF_FAM_FIREWIRE  13

-#endif
+#define APPLE_IF_FAM_BOND      14
+#endif /* __APPLE__ */
+
+/*
+ * 72 was chosen below because it is the size of a TCP/IP
+ * header (40) + the minimum mss (32).
+ */
+#define        IF_MINMTU       72
+#define        IF_MAXMTU       65535

 
 /*
  * Structures defining a network interface, providing a packet
 
 /*
  * Structures defining a network interface, providing a packet


@@ -103,216 +129,175 @@
  * interfaces.  These routines live in the files if.c and route.c
  */
 
  * interfaces.  These routines live in the files if.c and route.c
  */
 

-#ifdef __STDC__
-/*
- * Forward structure declarations for function prototypes [sic].
- */
-struct mbuf;
-struct proc;
-struct rtentry;
-struct socket;
-struct ether_header;
-struct  sockaddr_dl;
-#endif
-

 #define        IFNAMSIZ        16
 
 #define        IFNAMSIZ        16
 

-#include <sys/queue.h>         /* get TAILQ macros */
-
-#ifdef __APPLE_API_UNSTABLE
-#ifdef __APPLE__
-struct tqdummy;
-
-TAILQ_HEAD(tailq_head, tqdummy);
-

 /* This belongs up in socket.h or socketvar.h, depending on how far the
  *   event bubbles up.
  */
 
 struct net_event_data {
 /* This belongs up in socket.h or socketvar.h, depending on how far the
  *   event bubbles up.
  */
 
 struct net_event_data {

-     u_long            if_family;
-     u_long            if_unit;
-     char              if_name[IFNAMSIZ];
+       u_int32_t       if_family;
+       u_int32_t       if_unit;
+       char            if_name[IFNAMSIZ];

 };
 };

-#endif
-

 
 

-TAILQ_HEAD(ifnethead, ifnet);  /* we use TAILQs so that the order of */
-TAILQ_HEAD(ifaddrhead, ifaddr);        /* instantiation is preserved in the list */
-TAILQ_HEAD(ifprefixhead, ifprefix);
-LIST_HEAD(ifmultihead, ifmultiaddr);
+#if defined(__LP64__)
+#define __need_struct_timeval32
+#include <sys/_structs.h>
+#define IF_DATA_TIMEVAL timeval32
+#else
+#define IF_DATA_TIMEVAL timeval
+#endif

 
 

-#ifdef __APPLE__
-#ifdef KERNEL_PRIVATE
-/* bottom 16 bits reserved for hardware checksum */
-#define IF_HWASSIST_CSUM_IP            0x0001  /* will csum IP */
-#define IF_HWASSIST_CSUM_TCP           0x0002  /* will csum TCP */
-#define IF_HWASSIST_CSUM_UDP           0x0004  /* will csum UDP */
-#define IF_HWASSIST_CSUM_IP_FRAGS      0x0008  /* will csum IP fragments */
-#define IF_HWASSIST_CSUM_FRAGMENT      0x0010  /* will do IP fragmentation */
-#define IF_HWASSIST_CSUM_TCP_SUM16     0x1000  /* simple TCP Sum16 computation */
-#define IF_HWASSIST_CSUM_MASK          0xffff
-#define IF_HWASSIST_CSUM_FLAGS(hwassist)       ((hwassist) & IF_HWASSIST_CSUM_MASK)
+#pragma pack(4)

 
 

-/* VLAN support */
-#define IF_HWASSIST_VLAN_TAGGING       0x10000 /* supports VLAN tagging */
-#define IF_HWASSIST_VLAN_MTU           0x20000 /* supports VLAN MTU-sized packet (for software VLAN) */
-#endif KERNEL_PRIVATE

 /*
  * Structure describing information about an interface
  * which may be of interest to management entities.
  */
 struct if_data {
        /* generic interface information */
 /*
  * Structure describing information about an interface
  * which may be of interest to management entities.
  */
 struct if_data {
        /* generic interface information */

-       u_char  ifi_type;               /* ethernet, tokenring, etc */
-#ifdef __APPLE__
-       u_char  ifi_typelen;            /* Length of frame type id */
-#endif
-       u_char  ifi_physical;           /* e.g., AUI, Thinnet, 10base-T, etc */
-       u_char  ifi_addrlen;            /* media address length */
-       u_char  ifi_hdrlen;             /* media header length */
-       u_char  ifi_recvquota;          /* polling quota for receive intrs */
-       u_char  ifi_xmitquota;          /* polling quota for xmit intrs */
-       u_long  ifi_mtu;                /* maximum transmission unit */
-       u_long  ifi_metric;             /* routing metric (external only) */
-       u_long  ifi_baudrate;           /* linespeed */
+       u_char          ifi_type;       /* ethernet, tokenring, etc */
+       u_char          ifi_typelen;    /* Length of frame type id */
+       u_char          ifi_physical;   /* e.g., AUI, Thinnet, 10base-T, etc */
+       u_char          ifi_addrlen;    /* media address length */
+       u_char          ifi_hdrlen;     /* media header length */
+       u_char          ifi_recvquota;  /* polling quota for receive intrs */
+       u_char          ifi_xmitquota;  /* polling quota for xmit intrs */
+       u_char          ifi_unused1;    /* for future use */
+       u_int32_t       ifi_mtu;        /* maximum transmission unit */
+       u_int32_t       ifi_metric;     /* routing metric (external only) */
+       u_int32_t       ifi_baudrate;   /* linespeed */

        /* volatile statistics */
        /* 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 */
-#ifdef __APPLE__
-       u_long  ifi_recvtiming;         /* usec spent receiving when timing */
-       u_long  ifi_xmittiming;         /* usec spent xmitting when timing */
-#endif
-       struct  timeval ifi_lastchange; /* time of last administrative change */
-#ifdef __APPLE__
-       u_long  default_proto;          /* Default dl_tag when none is specified 
-                                                                * on dlil_output */
-#endif
-       u_long  ifi_hwassist;           /* HW offload capabilities */
-#ifdef KERNEL_PRIVATE
-       u_short ifi_nvlans;             /* number of attached vlans */
-       u_short ifi_reserved_1;         /* for future use */
-#else KERNEL_PRIVATE
-       u_long  ifi_reserved1;          /* for future use */
-#endif KERNEL_PRIVATE
-       u_long  ifi_reserved2;          /* for future use */
+       u_int32_t       ifi_ipackets;   /* packets received on interface */
+       u_int32_t       ifi_ierrors;    /* input errors on interface */
+       u_int32_t       ifi_opackets;   /* packets sent on interface */
+       u_int32_t       ifi_oerrors;    /* output errors on interface */
+       u_int32_t       ifi_collisions; /* collisions on csma interfaces */
+       u_int32_t       ifi_ibytes;     /* total number of octets received */
+       u_int32_t       ifi_obytes;     /* total number of octets sent */
+       u_int32_t       ifi_imcasts;    /* packets received via multicast */
+       u_int32_t       ifi_omcasts;    /* packets sent via multicast */
+       u_int32_t       ifi_iqdrops;    /* dropped on input, this interface */
+       u_int32_t       ifi_noproto;    /* destined for unsupported protocol */
+       u_int32_t       ifi_recvtiming; /* usec spent receiving when timing */
+       u_int32_t       ifi_xmittiming; /* usec spent xmitting when timing */
+       struct IF_DATA_TIMEVAL ifi_lastchange;  /* time of last administrative change */
+       u_int32_t       ifi_unused2;    /* used to be the default_proto */
+       u_int32_t       ifi_hwassist;   /* HW offload capabilities */
+       u_int32_t       ifi_reserved1;  /* for future use */
+       u_int32_t       ifi_reserved2;  /* for future use */

 };
 };

-#endif
+
+/*
+ * Structure describing information about an interface
+ * which may be of interest to management entities.
+ */
+struct if_data64 {
+       /* generic interface information */
+       u_char          ifi_type;               /* ethernet, tokenring, etc */
+       u_char          ifi_typelen;            /* Length of frame type id */
+       u_char          ifi_physical;           /* e.g., AUI, Thinnet, 10base-T, etc */
+       u_char          ifi_addrlen;            /* media address length */
+       u_char          ifi_hdrlen;             /* media header length */
+       u_char          ifi_recvquota;          /* polling quota for receive intrs */
+       u_char          ifi_xmitquota;          /* polling quota for xmit intrs */
+       u_char          ifi_unused1;            /* for future use */
+       u_int32_t       ifi_mtu;                /* maximum transmission unit */
+       u_int32_t       ifi_metric;             /* routing metric (external only) */
+       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_noproto;            /* destined for unsupported protocol */
+       u_int32_t       ifi_recvtiming;         /* usec spent receiving when timing */
+       u_int32_t       ifi_xmittiming;         /* usec spent xmitting when timing */
+       struct IF_DATA_TIMEVAL ifi_lastchange;  /* time of last administrative change */
+};
+
+#ifdef PRIVATE
+struct if_traffic_class {
+       u_int64_t               ifi_ibkpackets; /* TC_BK packets received on interface */
+       u_int64_t               ifi_ibkbytes;   /* TC_BK bytes received on interface */
+       u_int64_t               ifi_obkpackets; /* TC_BK packet sent on interface */
+       u_int64_t               ifi_obkbytes;   /* TC_BK bytes sent on interface */
+       u_int64_t               ifi_ivipackets; /* TC_VI packets received on interface */
+       u_int64_t               ifi_ivibytes;   /* TC_VI bytes received on interface */
+       u_int64_t               ifi_ovipackets; /* TC_VI packets sent on interface */
+       u_int64_t               ifi_ovibytes;   /* TC_VI bytes sent on interface */
+       u_int64_t               ifi_ivopackets; /* TC_VO packets received on interface */
+       u_int64_t               ifi_ivobytes;   /* TC_VO bytes received on interface */
+       u_int64_t               ifi_ovopackets; /* TC_VO packets sent on interface */
+       u_int64_t               ifi_ovobytes;   /* TC_VO bytes sent on interface */
+};
+#endif /* PRIVATE */
+
+#pragma pack()

 
 /*
  * Structure defining a queue for a network interface.
  */
 struct ifqueue {
 
 /*
  * Structure defining a queue for a network interface.
  */
 struct ifqueue {

-       struct  mbuf *ifq_head;
-       struct  mbuf *ifq_tail;
+       void    *ifq_head;
+       void    *ifq_tail;

        int     ifq_len;
        int     ifq_maxlen;
        int     ifq_drops;
 };
 
        int     ifq_len;
        int     ifq_maxlen;
        int     ifq_drops;
 };
 

+#ifdef XNU_KERNEL_PRIVATE

 /*
 /*

- * Structure defining a network interface.
- *
- * (Would like to call this struct ``if'', but C isn't PL/1.)
+ * Internal storage of if_data. This is bound to change. Various places in the
+ * stack will translate this data structure in to the externally visible
+ * if_data structure above.  Note that during interface attach time, the
+ * embedded if_data structure in ifnet is cleared, with the exception of
+ * some non-statistics related fields.

  */
  */

-struct ifnet {
-       void    *if_softc;              /* pointer to driver state */
-       char    *if_name;               /* name, e.g. ``en'' or ``lo'' */
-       TAILQ_ENTRY(ifnet) if_link;     /* all struct ifnets are chained */
-       struct  ifaddrhead if_addrhead; /* linked list of addresses per if */
-#ifdef __APPLE__
-       struct  tailq_head proto_head;  /* Head for if_proto structures */  
-#endif
-        int    if_pcount;              /* number of promiscuous listeners */
-       struct  bpf_if *if_bpf;         /* packet filter structure */
-       u_short if_index;               /* numeric abbreviation for this if  */
-       short   if_unit;                /* sub-unit for lower level driver */
-       short   if_timer;               /* time 'til if_watchdog called */
-       short   if_flags;               /* up/down, broadcast, etc. */
-       int     if_ipending;            /* interrupts pending */
-       void    *if_linkmib;            /* link-type-specific MIB data */
-       size_t  if_linkmiblen;          /* length of above data */
-       struct  if_data if_data;
-
-#ifdef __APPLE__
-/* New with DLIL */
-       int     refcnt;
-       int     offercnt;
-       int     (*if_output)(struct ifnet *ifnet_ptr, struct mbuf *m);
-       int     (*if_ioctl)(struct ifnet *ifnet_ptr, u_long  ioctl_code, void  *ioctl_arg);
-       int     (*if_set_bpf_tap)(struct ifnet *ifp, int mode, 
-                                 int (*bpf_callback)(struct ifnet *, struct mbuf *));
-       int     (*if_free)(struct ifnet *ifnet_ptr);
-       int     (*if_demux)(struct ifnet  *ifnet_ptr, struct mbuf  *mbuf_ptr, 
-                           char *frame_ptr, void  *if_proto_ptr);
-
-       int     (*if_event)(struct ifnet  *ifnet_ptr, caddr_t  event_ptr);
-
-       int     (*if_framer)(struct ifnet    *ifp,
-                            struct mbuf     **m,
-                            struct sockaddr *dest,
-                            char            *dest_linkaddr,
-                            char            *frame_type);
-
-       u_long  if_family;              /* ulong assigned by Apple */
-       struct tailq_head   if_flt_head;
-
-/* End DLIL specific */
-
-       void    *reserved0;     /* for future use */
-       void    *if_private;    /* private to interface */
-       long    if_eflags;              /* autoaddr, autoaddr done, etc. */
-#endif /* __APPLE__ */
-
-       struct  ifmultihead if_multiaddrs; /* multicast addresses configured */
-       int     if_amcount;             /* number of all-multicast requests */
-/* procedure handles */
-#ifndef __APPLE__
-       int     (*if_output)            /* output routine (enqueue) */
-               __P((struct ifnet *, struct mbuf *, struct sockaddr *,
-                    struct rtentry *));
-       void    (*if_start)             /* initiate output routine */
-               __P((struct ifnet *));
-       int     (*if_done)              /* output complete routine */
-               __P((struct ifnet *));  /* (XXX not used; fake prototype) */
-       int     (*if_ioctl)             /* ioctl routine */
-               __P((struct ifnet *, u_long, caddr_t));
-       void    (*if_watchdog)          /* timer routine */
-               __P((struct ifnet *));
-#endif
-       int     (*if_poll_recv)         /* polled receive routine */
-               __P((struct ifnet *, int *));
-       int     (*if_poll_xmit)         /* polled transmit routine */
-               __P((struct ifnet *, int *));
-       void    (*if_poll_intren)       /* polled interrupt reenable routine */
-               __P((struct ifnet *));
-       void    (*if_poll_slowinput)    /* input routine for slow devices */
-               __P((struct ifnet *, struct mbuf *));
-       void    (*if_init)              /* Init routine */
-               __P((void *));
-       int     (*if_resolvemulti)      /* validate/resolve multicast */
-               __P((struct ifnet *, struct sockaddr **, struct sockaddr *));
-       struct  ifqueue if_snd;         /* output queue */
-       struct  ifqueue *if_poll_slowq; /* input queue for slow devices */
-#ifdef __APPLE__
-       u_long  family_cookie;  
-       struct  ifprefixhead if_prefixhead; /* list of prefixes per if */
-       void *reserved1;        /* for future use */
-#else
-       struct  ifprefixhead if_prefixhead; /* list of prefixes per if */
-#endif /* __APPLE__ */
+struct if_data_internal {
+       /* generic interface information */
+       u_char          ifi_type;       /* ethernet, tokenring, etc */
+       u_char          ifi_typelen;    /* Length of frame type id */
+       u_char          ifi_physical;   /* e.g., AUI, Thinnet, 10base-T, etc */
+       u_char          ifi_addrlen;    /* media address length */
+       u_char          ifi_hdrlen;     /* media header length */
+       u_char          ifi_recvquota;  /* polling quota for receive intrs */
+       u_char          ifi_xmitquota;  /* polling quota for xmit intrs */
+       u_char          ifi_unused1;    /* for future use */
+       u_int32_t       ifi_mtu;        /* maximum transmission unit */
+       u_int32_t       ifi_metric;     /* routing metric (external only) */
+       u_int32_t       ifi_baudrate;   /* linespeed */
+       u_int32_t       _pad;
+       /* 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_noproto;    /* destined for unsupported protocol */
+       u_int32_t       ifi_recvtiming; /* usec spent receiving when timing */
+       u_int32_t       ifi_xmittiming; /* usec spent xmitting when timing */
+#define IF_LASTCHANGEUPTIME    1       /* lastchange: 1-uptime 0-calendar time */
+       struct  timeval ifi_lastchange; /* time of last administrative change */
+       u_int32_t       ifi_hwassist;   /* HW offload capabilities */
+       u_int32_t       ifi_tso_v4_mtu; /* TCP Segment Offload IPv4 maximum segment size */
+       u_int32_t       ifi_tso_v6_mtu; /* TCP Segment Offload IPv6 maximum segment size */

 };
 };

-typedef void if_init_f_t __P((void *));
+#endif /* XNU_KERNEL_PRIVATE */

 
 

+#ifdef PRIVATE

 #define        if_mtu          if_data.ifi_mtu
 #define        if_type         if_data.ifi_type
 #define if_typelen     if_data.ifi_typelen
 #define        if_mtu          if_data.ifi_mtu
 #define        if_type         if_data.ifi_type
 #define if_typelen     if_data.ifi_typelen


@@ -336,116 +321,284 @@ typedef void if_init_f_t __P((void *));
 #define        if_lastchange   if_data.ifi_lastchange
 #define if_recvquota   if_data.ifi_recvquota
 #define        if_xmitquota    if_data.ifi_xmitquota
 #define        if_lastchange   if_data.ifi_lastchange
 #define if_recvquota   if_data.ifi_recvquota
 #define        if_xmitquota    if_data.ifi_xmitquota

-#ifdef KERNEL_PRIVATE
-#define if_nvlans      if_data.ifi_nvlans
-#endif KERNEL_PRIVATE
-#define if_rawoutput(if, m, sa) if_output(if, m, sa, (struct rtentry *)0)
+#endif /* PRIVATE */
+#ifdef XNU_KERNEL_PRIVATE
+#define        if_tso_v4_mtu   if_data.ifi_tso_v4_mtu
+#define        if_tso_v6_mtu   if_data.ifi_tso_v6_mtu
+#endif /* XNU_KERNEL_PRIVATE */
+
+#ifdef XNU_KERNEL_PRIVATE
+/*
+ * Forward structure declarations for function prototypes [sic].
+ */
+struct proc;
+struct rtentry;
+struct socket;
+struct ifnet_filter;
+struct mbuf;
+struct ifaddr;
+struct tqdummy;
+struct proto_hash_entry;
+struct dlil_threading_info;
+#if PF
+struct pfi_kif;
+#endif /* PF */
+
+/* we use TAILQs so that the order of instantiation is preserved in the list */
+TAILQ_HEAD(ifnethead, ifnet);
+TAILQ_HEAD(ifaddrhead, ifaddr);
+TAILQ_HEAD(ifprefixhead, ifprefix);
+LIST_HEAD(ifmultihead, ifmultiaddr);
+TAILQ_HEAD(tailq_head, tqdummy);
+TAILQ_HEAD(ifnet_filter_head, ifnet_filter);
+TAILQ_HEAD(ddesc_head_name, dlil_demux_desc);
+#endif /* XNU_KERNEL_PRIVATE */
+
+#ifdef PRIVATE
+/*
+ * All of the following IF_HWASSIST_* flags are defined in kpi_inteface.h as
+ * IFNET_* flags. These are redefined here as constants to avoid failures to
+ * build user level programs that can not include kpi_interface.h. It is
+ * important to keep this in sync with the definitions in kpi_interface.h.
+ * The corresponding constant for each definition is mentioned in the comment.
+ *
+ * Bottom 16 bits reserved for hardware checksum
+ */
+#define IF_HWASSIST_CSUM_IP            0x0001  /* will csum IP, IFNET_CSUM_IP */
+#define IF_HWASSIST_CSUM_TCP           0x0002  /* will csum TCP, IFNET_CSUM_TCP */
+#define IF_HWASSIST_CSUM_UDP           0x0004  /* will csum UDP, IFNET_CSUM_UDP */
+#define IF_HWASSIST_CSUM_IP_FRAGS      0x0008  /* will csum IP fragments, IFNET_CSUM_FRAGMENT */
+#define IF_HWASSIST_CSUM_FRAGMENT      0x0010  /* will do IP fragmentation, IFNET_IP_FRAGMENT */
+#define IF_HWASSIST_CSUM_TCPIPV6       0x0020  /* will csum TCPv6, IFNET_CSUM_TCPIPV6 */
+#define IF_HWASSIST_CSUM_UDPIPV6       0x0040  /* will csum UDPv6, IFNET_CSUM_UDP */
+#define IF_HWASSIST_CSUM_FRAGMENT_IPV6 0x0080  /* will do IPv6 fragmentation, IFNET_IPV6_FRAGMENT */
+#define IF_HWASSIST_CSUM_TCP_SUM16     0x1000  /* simple TCP Sum16 computation, IFNET_CSUM_SUM16 */
+#define IF_HWASSIST_CSUM_MASK          0xffff
+#define IF_HWASSIST_CSUM_FLAGS(hwassist)       ((hwassist) & IF_HWASSIST_CSUM_MASK)
+
+/* VLAN support */
+#define IF_HWASSIST_VLAN_TAGGING       0x00010000      /* supports VLAN tagging, IFNET_VLAN_TAGGING */
+#define IF_HWASSIST_VLAN_MTU           0x00020000      /* supports VLAN MTU-sized packet (for software VLAN), IFNET_VLAN_MTU */
+
+/* TCP Segment Offloading support */
+
+#define IF_HWASSIST_TSO_V4             0x00200000      /* will do TCP Segment offload for IPv4, IFNET_TSO_IPV4 */
+#define IF_HWASSIST_TSO_V6             0x00400000      /* will do TCP Segment offload for IPv6, IFNET_TSO_IPV6 */
+#endif /* PRIVATE */
+
+#ifdef XNU_KERNEL_PRIVATE
+#include <sys/tree.h>
+#include <netinet/in.h>
+
+RB_HEAD(ll_reach_tree, if_llreach);    /* define struct ll_reach_tree */
+
+/*
+ * Structure defining a network interface.
+ *
+ * (Would like to call this struct ``if'', but C isn't PL/1.)
+ */
+struct ifnet {
+       /*
+        * Lock (RW or mutex) to protect this data structure (static storage.)
+        */
+       decl_lck_rw_data(, if_lock);
+       void            *if_softc;      /* pointer to driver state */
+       const char      *if_name;       /* name, e.g. ``en'' or ``lo'' */
+       TAILQ_ENTRY(ifnet) if_link;     /* all struct ifnets are chained */
+       TAILQ_ENTRY(ifnet) if_detaching_link; /* list of detaching ifnets */
+
+       decl_lck_mtx_data(, if_ref_lock)
+       u_int32_t       if_refflags;
+       u_int32_t       if_refio;       /* number of io ops to the underlying driver */

 
 

-#ifndef __APPLE__
-/* for compatibility with other BSDs */
-#define        if_addrlist     if_addrhead

 #define        if_list         if_link
 #define        if_list         if_link

+       struct ifaddrhead if_addrhead;  /* linked list of addresses per if */
+#define        if_addrlist     if_addrhead
+       struct ifaddr   *if_lladdr;     /* link address (first/permanent) */
+
+       int             if_pcount;      /* number of promiscuous listeners */
+       struct bpf_if   *if_bpf;        /* packet filter structure */
+       u_short         if_index;       /* numeric abbreviation for this if  */
+       short           if_unit;        /* sub-unit for lower level driver */
+       short           if_timer;       /* time 'til if_watchdog called */
+       short           if_flags;       /* up/down, broadcast, etc. */
+       u_int32_t       if_eflags;      /* see <net/if.h> */
+
+       int             if_capabilities;        /* interface features & capabilities */
+       int             if_capenable;           /* enabled features & capabilities */
+
+       void            *if_linkmib;    /* link-type-specific MIB data */
+       size_t          if_linkmiblen;  /* length of above data */
+
+       struct if_data_internal if_data __attribute__((aligned(8)));
+
+       ifnet_family_t          if_family;      /* value assigned by Apple */
+       uintptr_t               if_family_cookie;
+       ifnet_output_func       if_output;
+       ifnet_ioctl_func        if_ioctl;
+       ifnet_set_bpf_tap       if_set_bpf_tap;
+       ifnet_detached_func     if_free;
+       ifnet_demux_func        if_demux;
+       ifnet_event_func        if_event;
+       ifnet_framer_func       if_framer;
+       ifnet_add_proto_func    if_add_proto;
+       ifnet_del_proto_func    if_del_proto;
+       ifnet_check_multi       if_check_multi;
+       struct proto_hash_entry *if_proto_hash;
+       void                    *if_kpi_storage;
+
+       decl_lck_mtx_data(, if_flt_lock)
+       u_int32_t               if_flt_busy;
+       u_int32_t               if_flt_waiters;
+       struct ifnet_filter_head if_flt_head;
+
+       struct ifmultihead      if_multiaddrs;  /* multicast addresses */
+       u_int32_t               if_updatemcasts; /* mcast addrs need updating */
+       int                     if_amcount;     /* # of all-multicast reqs */
+       decl_lck_mtx_data(, if_addrconfig_lock); /* for serializing addr config */
+       struct in_multi         *if_allhostsinm; /* store all-hosts inm for this ifp */
+
+       struct dlil_threading_info *if_input_thread;
+
+       struct ifqueue          if_snd;
+
+       struct  ifprefixhead    if_prefixhead;  /* list of prefixes per if */
+       struct {
+               u_int32_t       length;
+               union {
+                       u_char  buffer[8];
+                       u_char  *ptr;
+               } u;
+       } if_broadcast;
+#if CONFIG_MACF_NET
+       struct label            *if_label;      /* interface MAC label */

 #endif
 #endif

-#ifdef KERNEL_PRIVATE
+
+       u_int32_t               if_wake_properties;
+#if PF
+       struct thread           *if_pf_curthread;
+       struct pfi_kif          *if_pf_kif;
+#endif /* PF */
+
+       decl_lck_mtx_data(, if_cached_route_lock);
+       u_int32_t               if_fwd_cacheok;
+       struct route            if_fwd_route;   /* cached forwarding route */
+       struct route            if_src_route;   /* cached ipv4 source route */
+       struct route_in6        if_src_route6;  /* cached ipv6 source route */
+
+       decl_lck_rw_data(, if_llreach_lock);
+       struct ll_reach_tree    if_ll_srcs;     /* source link-layer tree */
+
+       void                    *if_bridge;     /* bridge glue */
+
+       u_int32_t               if_want_aggressive_drain;
+       u_int32_t               if_idle_flags;  /* idle flags */
+       u_int32_t               if_idle_new_flags; /* temporary idle flags */
+       u_int32_t               if_idle_new_flags_mask; /* temporary mask */
+       u_int32_t               if_route_refcnt; /* idle: route ref count */
+
+       struct if_traffic_class if_tc __attribute__((aligned(8)));
+#if INET
+       struct igmp_ifinfo      *if_igi;        /* for IGMPv3 */
+#endif /* INET */
+#if INET6
+       struct mld_ifinfo       *if_mli;        /* for MLDv2 */
+#endif /* INET6 */
+};
+
+/*
+ * Valid values for if_useflags
+ */
+#define        IFRF_ATTACHED   0x1     /* ifnet attach is completely done */
+#define        IFRF_DETACHING  0x2     /* detach has been requested */
+

 /*
  * Structure describing a `cloning' interface.
  */
 struct if_clone {
        LIST_ENTRY(if_clone) ifc_list;  /* on list of cloners */
 /*
  * 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. `vlan' */
-       size_t ifc_namelen;             /* length of name */
-       int ifc_minifs;                 /* minimum number of interfaces */
-       int ifc_maxunit;                /* maximum unit number */
-       unsigned char *ifc_units;       /* bitmap to handle units */
-       int ifc_bmlen;                  /* bitmap length */
-
-       int     (*ifc_create)(struct if_clone *, int);
-       void    (*ifc_destroy)(struct ifnet *);
+       const char      *ifc_name;      /* name of device, e.g. `vlan' */
+       size_t          ifc_namelen;    /* length of name */
+       u_int32_t       ifc_minifs;     /* minimum number of interfaces */
+       u_int32_t       ifc_maxunit;    /* maximum unit number */
+       unsigned char   *ifc_units;     /* bitmap to handle units */
+       u_int32_t       ifc_bmlen;      /* bitmap length */
+
+       int             (*ifc_create)(struct if_clone *, u_int32_t, void *);
+       int             (*ifc_destroy)(struct ifnet *);

 };
 
 };
 

-#define IF_CLONE_INITIALIZER(name, create, destroy, minifs, maxunit)   \
-    { { 0 }, name, sizeof(name) - 1, minifs, maxunit, NULL, 0, create, destroy }
-#endif
+#define IF_CLONE_INITIALIZER(name, create, destroy, minifs, maxunit) {       \
+       { NULL, NULL }, name, (sizeof (name) - 1), minifs, maxunit, NULL, 0,  \
+       create, destroy                                                       \
+}

 
 

-/*
- * Bit values in if_ipending
- */
-#define        IFI_RECV        1       /* I want to receive */
-#define        IFI_XMIT        2       /* I want to transmit */
+#define M_CLONE         M_IFADDR

 
 /*
 
 /*

- * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq)
- * are 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().
+ * Macros to manipulate ifqueue.  Users of these macros are responsible
+ * for serialization, by holding whatever lock is appropriate for the
+ * corresponding structure that is referring the ifqueue.

  */
 #define        IF_QFULL(ifq)           ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
 #define        IF_DROP(ifq)            ((ifq)->ifq_drops++)
  */
 #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_ENQUEUE(ifq, m) {                                            \
+       (m)->m_nextpkt = NULL;                                          \
+       if ((ifq)->ifq_tail == NULL)                                    \
+               (ifq)->ifq_head = m;                                    \
+       else                                                            \
+               ((struct mbuf*)(ifq)->ifq_tail)->m_nextpkt = m;         \
+       (ifq)->ifq_tail = 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_PREPEND(ifq, m) {                                            \
+       (m)->m_nextpkt = (ifq)->ifq_head;                               \
+       if ((ifq)->ifq_tail == NULL)                                    \
+               (ifq)->ifq_tail = (m);                                  \
+       (ifq)->ifq_head = (m);                                          \
+       (ifq)->ifq_len++;                                               \

 }
 }

-
-#ifdef KERNEL
-#define        IF_ENQ_DROP(ifq, m)     if_enq_drop(ifq, m)
-
-#if defined(__GNUC__) && defined(MT_HEADER)
-static __inline int
-if_queue_drop(struct ifqueue *ifq, struct mbuf *m)
-{
-       IF_DROP(ifq);
-       return 0;
+#define        IF_DEQUEUE(ifq, m) {                                            \
+       (m) = (ifq)->ifq_head;                                          \
+       if (m != NULL) {                                                \
+               if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL)         \
+                       (ifq)->ifq_tail = NULL;                         \
+               (m)->m_nextpkt = NULL;                                  \
+               (ifq)->ifq_len--;                                       \
+       }                                                               \

 }
 }

-
-static __inline int
-if_enq_drop(struct ifqueue *ifq, struct mbuf *m)
-{
-       if (IF_QFULL(ifq) &&
-           !if_queue_drop(ifq, m))
-               return 0;
-       IF_ENQUEUE(ifq, m);
-       return 1;
+#define        IF_REMQUEUE(ifq, m) {                                           \
+       struct mbuf *_p = (ifq)->ifq_head;                              \
+       struct mbuf *_n = (m)->m_nextpkt;                               \
+       if ((m) == _p)                                                  \
+               _p = NULL;                                              \
+       while (_p != NULL) {                                            \
+               if (_p->m_nextpkt == (m))                               \
+                       break;                                          \
+               _p = _p->m_nextpkt;                                     \
+       }                                                               \
+       VERIFY(_p != NULL || ((m) == (ifq)->ifq_head));                 \
+       if ((m) == (ifq)->ifq_head)                                     \
+               (ifq)->ifq_head = _n;                                   \
+       if ((m) == (ifq)->ifq_tail)                                     \
+               (ifq)->ifq_tail = _p;                                   \
+       VERIFY((ifq)->ifq_tail != NULL || (ifq)->ifq_head == NULL);     \
+       VERIFY((ifq)->ifq_len != 0);                                    \
+       --(ifq)->ifq_len;                                               \
+       if (_p != NULL)                                                 \
+               _p->m_nextpkt = _n;                                     \
+       (m)->m_nextpkt = NULL;                                          \

 }
 }

-#else
-
-#ifdef MT_HEADER
-int    if_enq_drop __P((struct ifqueue *, struct mbuf *));
-#endif
-
-#endif
-#endif /* __APPLE_API_UNSTABLE */
+#define IF_DRAIN(ifq) do {                                             \
+       struct mbuf *m;                                                 \
+       for (;;) {                                                      \
+               IF_DEQUEUE(ifq, m);                                     \
+               if (m == NULL)                                          \
+                       break;                                          \
+               m_freem(m);                                             \
+       }                                                               \
+} while (0)

 
 

-/*
- * 72 was chosen below because it is the size of a TCP/IP
- * header (40) + the minimum mss (32).
- */
-#define        IF_MINMTU       72
-#define        IF_MAXMTU       65535
-
-#endif /* KERNEL */
-
-#ifdef __APPLE_API_UNSTABLE

 /*
  * The ifaddr structure contains information about one address
  * of an interface.  They are maintained by the different address families,
 /*
  * The ifaddr structure contains information about one address
  * of an interface.  They are maintained by the different address families,


@@ -453,29 +606,75 @@ int       if_enq_drop __P((struct ifqueue *, struct mbuf *));
  * together so all addresses for an interface can be located.
  */
 struct ifaddr {
  * 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 */
+       decl_lck_mtx_data(, ifa_lock);  /* lock for ifaddr */
+       uint32_t        ifa_refcnt;     /* ref count, use IFA_{ADD,REM}REF */
+       uint32_t        ifa_debug;      /* debug flags */
+       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 */
 #define        ifa_broadaddr   ifa_dstaddr     /* broadcast address interface */

-       struct  sockaddr *ifa_netmask;  /* used to determine subnet */
-#ifndef __APPLE__
-       /* Use of if_data doesn't justify change of API */
-       struct  if_data if_data;        /* not all members are meaningful */
-#endif
-       struct  ifnet *ifa_ifp;         /* back-pointer to interface */
+       struct sockaddr *ifa_netmask;   /* used to determine subnet */
+       struct ifnet    *ifa_ifp;       /* back-pointer to interface */

        TAILQ_ENTRY(ifaddr) ifa_link;   /* queue macro glue */
        TAILQ_ENTRY(ifaddr) ifa_link;   /* queue macro glue */

-       void    (*ifa_rtrequest)        /* check or clean routes (+ or -)'d */
-               __P((int, struct rtentry *, struct sockaddr *));
-       u_short ifa_flags;              /* mostly rt_flags for cloning */
-       short   ifa_refcnt;/* 16bit ref count, use ifaref, ifafree */
-       int     ifa_metric;             /* cost of going out this interface */
-#ifdef notdef
-       struct  rtentry *ifa_rt;        /* XXXX for ROUTETOIF ????? */
-#endif
-       u_long  ifa_dlt;
-       int (*ifa_claim_addr)           /* check if an addr goes to this if */
-               __P((struct ifaddr *, struct sockaddr *));
+       void (*ifa_rtrequest)           /* check or clean routes (+ or -)'d */
+           (int, struct rtentry *, struct sockaddr *);
+       uint32_t        ifa_flags;      /* mostly rt_flags for cloning */
+       int32_t         ifa_metric;     /* cost of going out this interface */
+       void (*ifa_free)(struct ifaddr *); /* callback fn for freeing */
+       void (*ifa_trace)               /* callback fn for tracing refs */
+           (struct ifaddr *, int);
+       void (*ifa_attached)(struct ifaddr *); /* callback fn for attaching */
+       void (*ifa_detached)(struct ifaddr *); /* callback fn for detaching */

 };
 };

-#define        IFA_ROUTE       RTF_UP          /* route installed */
+
+/*
+ * Valid values for ifa_flags
+ */
+#define        IFA_ROUTE       RTF_UP          /* route installed (0x1) */
+#define        IFA_CLONING     RTF_CLONING     /* (0x100) */
+
+/*
+ * Valid values for ifa_debug
+ */
+#define        IFD_ATTACHED    0x1             /* attached to list */
+#define        IFD_ALLOC       0x2             /* dynamically allocated */
+#define        IFD_DEBUG       0x4             /* has debugging info */
+#define        IFD_LINK        0x8             /* link address */
+#define        IFD_TRASHED     0x10            /* in trash list */
+#define        IFD_SKIP        0x20            /* skip this entry */
+#define        IFD_NOTREADY    0x40            /* embryonic; not yet ready */
+
+#define        IFA_LOCK_ASSERT_HELD(_ifa)                                      \
+       lck_mtx_assert(&(_ifa)->ifa_lock, LCK_MTX_ASSERT_OWNED)
+
+#define        IFA_LOCK_ASSERT_NOTHELD(_ifa)                                   \
+       lck_mtx_assert(&(_ifa)->ifa_lock, LCK_MTX_ASSERT_NOTOWNED)
+
+#define        IFA_LOCK(_ifa)                                                  \
+       lck_mtx_lock(&(_ifa)->ifa_lock)
+
+#define        IFA_LOCK_SPIN(_ifa)                                             \
+       lck_mtx_lock_spin(&(_ifa)->ifa_lock)
+
+#define        IFA_CONVERT_LOCK(_ifa) do {                                     \
+       IFA_LOCK_ASSERT_HELD(_ifa);                                     \
+       lck_mtx_convert_spin(&(_ifa)->ifa_lock);                        \
+} while (0)
+
+#define        IFA_UNLOCK(_ifa)                                                \
+       lck_mtx_unlock(&(_ifa)->ifa_lock)
+
+#define        IFA_ADDREF(_ifa)                                                \
+       ifa_addref(_ifa, 0)
+
+#define        IFA_ADDREF_LOCKED(_ifa)                                         \
+       ifa_addref(_ifa, 1)
+
+#define        IFA_REMREF(_ifa) do {                                           \
+       (void) ifa_remref(_ifa, 0);                                     \
+} while (0)
+
+#define        IFA_REMREF_LOCKED(_ifa)                                         \
+       ifa_remref(_ifa, 1)

 
 /*
  * The prefix structure contains information about one prefix
 
 /*
  * The prefix structure contains information about one prefix


@@ -494,87 +693,165 @@ struct ifprefix {
 /*
  * Multicast address structure.  This is analogous to the ifaddr
  * structure except that it keeps track of multicast addresses.
 /*
  * Multicast address structure.  This is analogous to the ifaddr
  * structure except that it keeps track of multicast addresses.

- * Also, the reference count here is a count of requests for this
- * address, not a count of pointers to this structure.
+ * Also, the request count here is a count of requests for this
+ * address, not a count of pointers to this structure; anonymous
+ * membership(s) holds one outstanding request count.

  */
 struct ifmultiaddr {
  */
 struct ifmultiaddr {

+       decl_lck_mtx_data(, ifma_lock);
+       u_int32_t ifma_refcount;        /* reference count */
+       u_int32_t ifma_anoncnt;         /* # of anonymous requests */
+       u_int32_t ifma_reqcnt;          /* total requests for this address */
+       u_int32_t ifma_debug;           /* see ifa_debug flags */
+       u_int32_t ifma_flags;           /* see below */

        LIST_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
        LIST_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */

-       struct  sockaddr *ifma_addr;    /* address this membership is for */
-       struct  sockaddr *ifma_lladdr;  /* link-layer translation, if any */
-       struct  ifnet *ifma_ifp;        /* back-pointer to interface */
-       u_int   ifma_refcount;          /* reference count */
-       void    *ifma_protospec;        /* protocol-specific state, if any */
+       struct sockaddr *ifma_addr;     /* address this membership is for */
+       struct ifmultiaddr *ifma_ll;    /* link-layer translation, if any */
+       struct ifnet *ifma_ifp;         /* back-pointer to interface */
+       void *ifma_protospec;           /* protocol-specific state, if any */
+       void (*ifma_trace)              /* callback fn for tracing refs */
+           (struct ifmultiaddr *, int);

 };
 
 };
 

-#ifdef KERNEL
-#define IFAREF(ifa) ifaref(ifa)
-#define IFAFREE(ifa) ifafree(ifa)
-
-#ifdef __APPLE_API_PRIVATE
-extern struct ifnethead ifnet;
-extern struct  ifnet   **ifindex2ifnet;
-extern int ifqmaxlen;
-extern struct ifnet loif[];
-extern int if_index;
-extern struct ifaddr **ifnet_addrs;
-#endif /* __APPLE_API_PRIVATE */
-
-#ifndef __APPLE__
-void   ether_ifattach __P((struct ifnet *, int));
-void   ether_ifdetach __P((struct ifnet *, int));
-void   ether_input __P((struct ifnet *, struct ether_header *, struct mbuf *));
-void   ether_demux __P((struct ifnet *, struct ether_header *, struct mbuf *));
-int    ether_output __P((struct ifnet *,
-          struct mbuf *, struct sockaddr *, struct rtentry *));
-int    ether_output_frame __P((struct ifnet *, struct mbuf *));
-int    ether_ioctl __P((struct ifnet *, int, caddr_t));
-#endif
-
-int    if_addmulti __P((struct ifnet *, struct sockaddr *,
-                        struct ifmultiaddr **));
-int    if_allmulti __P((struct ifnet *, int));
-void   if_attach __P((struct ifnet *));
-int    if_delmultiaddr __P((struct ifmultiaddr *ifma));
-int    if_delmulti __P((struct ifnet *, struct sockaddr *));
-void   if_down __P((struct ifnet *));
-void   if_route __P((struct ifnet *, int flag, int fam));
-void   if_unroute __P((struct ifnet *, int flag, int fam));
-void   if_up __P((struct ifnet *));
-/*void ifinit __P((void));*/ /* declared in systm.h for main() */
-int    ifioctl __P((struct socket *, u_long, caddr_t, struct proc *));
-int    ifpromisc __P((struct ifnet *, int));
-struct ifnet *ifunit __P((const char *));
-struct  ifnet *if_withname __P((struct sockaddr *));
-
-int    if_poll_recv_slow __P((struct ifnet *ifp, int *quotap));
-void   if_poll_xmit_slow __P((struct ifnet *ifp, int *quotap));
-void   if_poll_throttle __P((void));
-void   if_poll_unthrottle __P((void *));
-void   if_poll_init __P((void));
-void   if_poll __P((void));
-#ifdef KERNEL_PRIVATE
-void   if_clone_attach(struct if_clone *);
-void   if_clone_detach(struct if_clone *);
-#endif KERNEL_PRIVATE
-
-struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *));
-struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *));
-struct ifaddr *ifa_ifwithnet __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   ifaref __P((struct ifaddr *));
-
-struct ifmultiaddr *ifmaof_ifpforaddr __P((struct sockaddr *, 
-                                           struct ifnet *));
-#ifndef __APPLE__
-int    if_simloop __P((struct ifnet *ifp, struct mbuf *m,
-               struct sockaddr *dst, int hlen));
-#endif
-
-#endif /* KERNEL */
-
-
-#endif /* __APPLE_API_UNSTABLE */
+/*
+ * Values for ifma_flags
+ */
+#define        IFMAF_ANONYMOUS         0x1     /* has anonymous request ref(s) held */
+
+#define        IFMA_LOCK_ASSERT_HELD(_ifma)                                    \
+       lck_mtx_assert(&(_ifma)->ifma_lock, LCK_MTX_ASSERT_OWNED)
+
+#define        IFMA_LOCK_ASSERT_NOTHELD(_ifma)                                 \
+       lck_mtx_assert(&(_ifma)->ifma_lock, LCK_MTX_ASSERT_NOTOWNED)
+
+#define        IFMA_LOCK(_ifma)                                                \
+       lck_mtx_lock(&(_ifma)->ifma_lock)
+
+#define        IFMA_LOCK_SPIN(_ifma)                                           \
+       lck_mtx_lock_spin(&(_ifma)->ifma_lock)
+
+#define        IFMA_CONVERT_LOCK(_ifma) do {                                   \
+       IFMA_LOCK_ASSERT_HELD(_ifma);                                   \
+       lck_mtx_convert_spin(&(_ifma)->ifma_lock);                      \
+} while (0)
+
+#define        IFMA_UNLOCK(_ifma)                                              \
+       lck_mtx_unlock(&(_ifma)->ifma_lock)
+
+#define        IFMA_ADDREF(_ifma)                                              \
+       ifma_addref(_ifma, 0)
+
+#define        IFMA_ADDREF_LOCKED(_ifma)                                       \
+       ifma_addref(_ifma, 1)
+
+#define        IFMA_REMREF(_ifma)                                              \
+       ifma_remref(_ifma)
+
+__private_extern__ struct ifnethead ifnet_head;
+__private_extern__ struct ifnet **ifindex2ifnet;
+__private_extern__ int ifqmaxlen;
+__private_extern__ int if_index;
+__private_extern__ struct ifaddr **ifnet_addrs;
+__private_extern__ lck_attr_t *ifa_mtx_attr;
+__private_extern__ lck_grp_t *ifa_mtx_grp;
+__private_extern__ lck_grp_t *ifnet_lock_group;
+__private_extern__ lck_attr_t *ifnet_lock_attr;
+extern ifnet_t lo_ifp;
+
+extern int if_addmulti(struct ifnet *, const struct sockaddr *,
+    struct ifmultiaddr **);
+extern int if_addmulti_anon(struct ifnet *, const struct sockaddr *,
+    struct ifmultiaddr **);
+extern int if_allmulti(struct ifnet *, int);
+extern int if_delmulti(struct ifnet *, const struct sockaddr *);
+extern int if_delmulti_ifma(struct ifmultiaddr *);
+extern int if_delmulti_anon(struct ifnet *, const struct sockaddr *);
+extern void if_down(struct ifnet *);
+extern int if_down_all(void);
+extern void if_up(struct ifnet *);
+__private_extern__ void if_updown(struct ifnet *ifp, int up);
+extern int ifioctl(struct socket *, u_long, caddr_t, struct proc *);
+extern int ifioctllocked(struct socket *, u_long, caddr_t, struct proc *);
+extern struct ifnet *ifunit(const char *);
+extern struct ifnet *if_withname(struct sockaddr *);
+
+extern struct if_clone *if_clone_lookup(const char *, u_int32_t *);
+extern int if_clone_attach(struct if_clone *);
+extern void if_clone_detach(struct if_clone *);
+
+extern errno_t if_mcasts_update(struct ifnet *);
+
+typedef enum {
+       IFNET_LCK_ASSERT_EXCLUSIVE,     /* RW: held as writer */
+       IFNET_LCK_ASSERT_SHARED,        /* RW: held as reader */
+       IFNET_LCK_ASSERT_OWNED,         /* RW: writer/reader, MTX: held */
+       IFNET_LCK_ASSERT_NOTOWNED       /* not held */
+} ifnet_lock_assert_t;
+
+__private_extern__ void ifnet_lock_assert(struct ifnet *, ifnet_lock_assert_t);
+__private_extern__ void ifnet_lock_shared(struct ifnet *ifp);
+__private_extern__ void ifnet_lock_exclusive(struct ifnet *ifp);
+__private_extern__ void ifnet_lock_done(struct ifnet *ifp);
+
+__private_extern__ void        ifnet_head_lock_shared(void);
+__private_extern__ void        ifnet_head_lock_exclusive(void);
+__private_extern__ void        ifnet_head_done(void);
+
+__private_extern__ errno_t ifnet_set_idle_flags_locked(ifnet_t, u_int32_t,
+    u_int32_t);
+__private_extern__ int ifnet_is_attached(struct ifnet *, int refio);
+__private_extern__ void ifnet_decr_iorefcnt(struct ifnet *);
+
+__private_extern__ void if_attach_ifa(struct ifnet *, struct ifaddr *);
+__private_extern__ void if_attach_link_ifa(struct ifnet *, struct ifaddr *);
+__private_extern__ void if_detach_ifa(struct ifnet *, struct ifaddr *);
+__private_extern__ void if_detach_link_ifa(struct ifnet *, struct ifaddr *);
+
+extern struct ifaddr *ifa_ifwithaddr(const struct sockaddr *);
+extern struct ifaddr *ifa_ifwithaddr_scoped(const struct sockaddr *, unsigned int);
+extern struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *);
+extern struct ifaddr *ifa_ifwithnet(const struct sockaddr *);
+extern struct ifaddr *ifa_ifwithnet_scoped(const struct sockaddr *, unsigned int);
+extern struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *,
+    const struct sockaddr *);
+extern struct  ifaddr *ifa_ifwithroute_locked(int, const struct sockaddr *, const struct sockaddr *);
+extern struct ifaddr *ifa_ifwithroute_scoped_locked(int, const struct sockaddr *,
+    const struct sockaddr *, unsigned int);
+extern struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *);
+__private_extern__ struct ifaddr *ifa_ifpgetprimary(struct ifnet *, int);
+extern void ifa_addref(struct ifaddr *, int);
+extern struct ifaddr *ifa_remref(struct ifaddr *, int);
+extern void ifa_lock_init(struct ifaddr *);
+extern void ifa_lock_destroy(struct ifaddr *);
+extern void ifma_addref(struct ifmultiaddr *, int);
+extern void ifma_remref(struct ifmultiaddr *);
+
+extern void ifa_init(void);
+
+__private_extern__ struct in_ifaddr *ifa_foraddr(unsigned int);
+__private_extern__ struct in_ifaddr *ifa_foraddr_scoped(unsigned int,
+    unsigned int);
+
+#if INET6
+struct in6_addr;
+__private_extern__ struct in6_ifaddr *ifa_foraddr6(struct in6_addr *);
+__private_extern__ struct in6_ifaddr *ifa_foraddr6_scoped(struct in6_addr *,
+    unsigned int);
+#endif /* INET6 */
+
+__private_extern__ void if_data_internal_to_if_data(struct ifnet *ifp,
+    const struct if_data_internal *if_data_int, struct if_data *if_data);
+__private_extern__ void        if_data_internal_to_if_data64(struct ifnet *ifp,
+    const struct if_data_internal *if_data_int, struct if_data64 *if_data64);
+__private_extern__ void        if_copy_traffic_class(struct ifnet *ifp,
+    struct if_traffic_class *if_tc);
+
+__private_extern__ struct rtentry *ifnet_cached_rtlookup_inet(struct ifnet *,
+    struct in_addr);
+#if INET6
+__private_extern__ struct rtentry *ifnet_cached_rtlookup_inet6(struct ifnet *,
+    struct in6_addr *);
+#endif /* INET6 */
+
+#endif /* XNU_KERNEL_PRIVATE */

 #endif /* !_NET_IF_VAR_H_ */
 #endif /* !_NET_IF_VAR_H_ */