xnu-3789.1.32.tar.gz

[apple/xnu.git] / bsd / sys / socketvar.h

diff --git a/bsd/sys/socketvar.h b/bsd/sys/socketvar.h
index 423634ccacc97ade5e96ad61c4c1376b0de5c546..e3d1dfdf32a30f547134c6ad956f949f01a56df9 100644 (file)
--- a/bsd/sys/socketvar.h
+++ b/bsd/sys/socketvar.h
@@ -1,8 +1,8 @@
 /*
 /*

- * Copyright (c) 2000-2013 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2016 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  * @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


@@ -11,10 +11,10 @@
  * 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.
  * 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.
  * 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
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,


@@ -22,12 +22,12 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.

- * 
+ *

  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */

-/*-
+/*

  * Copyright (c) 1982, 1986, 1990, 1993
  *     The Regents of the University of California.  All rights reserved.
  *
  * Copyright (c) 1982, 1986, 1990, 1993
  *     The Regents of the University of California.  All rights reserved.
  *


@@ -102,23 +102,23 @@ extern    char netio[], netcon[], netcls[];
 #endif /* KERNEL_PRIVATE */
 
 #ifdef PRIVATE
 #endif /* KERNEL_PRIVATE */
 
 #ifdef PRIVATE

-#define SO_TC_STATS_MAX 4
+#define        SO_TC_STATS_MAX 4

 
 struct data_stats {
 
 struct data_stats {

-        u_int64_t       rxpackets;
-        u_int64_t       rxbytes;
-        u_int64_t       txpackets;
-        u_int64_t       txbytes;
+       u_int64_t       rxpackets;
+       u_int64_t       rxbytes;
+       u_int64_t       txpackets;
+       u_int64_t       txbytes;

 };
 
 };
 

-#define MSG_PRI_0 0    /* TCP message priority, lowest */
-#define MSG_PRI_1 1
-#define MSG_PRI_2 2
-#define MSG_PRI_3 3    /* TCP message priority, highest */
-#define MSG_PRI_MAX MSG_PRI_3
-#define MSG_PRI_MIN MSG_PRI_0
-#define MSG_PRI_COUNT 4
-#define MSG_PRI_DEFAULT MSG_PRI_1
+#define        MSG_PRI_0 0     /* TCP message priority, lowest */
+#define        MSG_PRI_1 1
+#define        MSG_PRI_2 2
+#define        MSG_PRI_3 3     /* TCP message priority, highest */
+#define        MSG_PRI_MAX MSG_PRI_3
+#define        MSG_PRI_MIN MSG_PRI_0
+#define        MSG_PRI_COUNT 4
+#define        MSG_PRI_DEFAULT MSG_PRI_1

 #endif /* PRIVATE */
 
 #ifdef KERNEL_PRIVATE
 #endif /* PRIVATE */
 
 #ifdef KERNEL_PRIVATE


@@ -128,7 +128,7 @@ struct msg_priq {
        struct mbuf *msgq_tail; /* last mbuf in the queue */
        struct mbuf *msgq_lastmsg; /* last message in the queue */
        u_int32_t msgq_flags;   /* flags per priority queue */
        struct mbuf *msgq_tail; /* last mbuf in the queue */
        struct mbuf *msgq_lastmsg; /* last message in the queue */
        u_int32_t msgq_flags;   /* flags per priority queue */

-#define MSGQ_MSG_NOTDONE 0x1   /* set when EOR of a msg is not seen */
+#define        MSGQ_MSG_NOTDONE 0x1    /* set when EOR of a msg is not seen */

        u_int32_t msgq_bytes;   /* data bytes in this queue */
 };
 
        u_int32_t msgq_bytes;   /* data bytes in this queue */
 };
 


@@ -139,7 +139,7 @@ struct msg_state {
 };
 
 /* mbuf flag used to indicate out of order data received */
 };
 
 /* mbuf flag used to indicate out of order data received */

-#define M_UNORDERED_DATA M_PROTO1
+#define        M_UNORDERED_DATA M_PROTO1

 
 /*
  * Kernel structure per socket.
 
 /*
  * Kernel structure per socket.


@@ -150,6 +150,7 @@ struct msg_state {
 struct socket {
        int     so_zone;                /* zone we were allocated from */
        short   so_type;                /* generic type, see socket.h */
 struct socket {
        int     so_zone;                /* zone we were allocated from */
        short   so_type;                /* generic type, see socket.h */

+       u_short so_error;               /* error affecting connection */

        u_int32_t so_options;           /* from socket call, see socket.h */
        short   so_linger;              /* time to linger while closing */
        short   so_state;               /* internal state flags SS_*, below */
        u_int32_t so_options;           /* from socket call, see socket.h */
        short   so_linger;              /* time to linger while closing */
        short   so_state;               /* internal state flags SS_*, below */


@@ -172,10 +173,9 @@ struct socket {
        TAILQ_ENTRY(socket) so_list;    /* list of unaccepted connections */
        short   so_qlen;                /* number of unaccepted connections */
        short   so_incqlen;             /* number of unaccepted incomplete
        TAILQ_ENTRY(socket) so_list;    /* list of unaccepted connections */
        short   so_qlen;                /* number of unaccepted connections */
        short   so_incqlen;             /* number of unaccepted incomplete

-                                          connections */
+                                       connections */

        short   so_qlimit;              /* max number queued connections */
        short   so_timeo;               /* connection timeout */
        short   so_qlimit;              /* max number queued connections */
        short   so_timeo;               /* connection timeout */

-       u_short so_error;               /* error affecting connection */

        pid_t   so_pgid;                /* pgid for signals */
        u_int32_t so_oobmark;           /* chars to oob mark */
        /*
        pid_t   so_pgid;                /* pgid for signals */
        u_int32_t so_oobmark;           /* chars to oob mark */
        /*


@@ -193,19 +193,21 @@ struct socket {
                struct mbuf     *sb_lastrecord; /* first mbuf of last record */
                struct socket   *sb_so;         /* socket back ptr for kexts */
                struct selinfo  sb_sel;         /* process selecting rd/wr */
                struct mbuf     *sb_lastrecord; /* first mbuf of last record */
                struct socket   *sb_so;         /* socket back ptr for kexts */
                struct selinfo  sb_sel;         /* process selecting rd/wr */

-               u_int32_t       sb_flags;       /* flags, see below */

                struct timeval  sb_timeo;       /* timeout for read/write */
                struct timeval  sb_timeo;       /* timeout for read/write */

+               u_int32_t       sb_flags;       /* flags, see below */

                u_int32_t       sb_idealsize;   /* Ideal size for the sb based
                u_int32_t       sb_idealsize;   /* Ideal size for the sb based

-                                                  on bandwidth and delay */
+                                               on bandwidth and delay */

                void    (*sb_upcall)(struct socket *, void *arg, int waitf);
                void    *sb_upcallarg;          /* Arg for above */
                u_int32_t       sb_wantlock;    /* # of SB_LOCK waiters */
                u_int32_t       sb_waiters;     /* # of data/space waiters */
                void    (*sb_upcall)(struct socket *, void *arg, int waitf);
                void    *sb_upcallarg;          /* Arg for above */
                u_int32_t       sb_wantlock;    /* # of SB_LOCK waiters */
                u_int32_t       sb_waiters;     /* # of data/space waiters */

-               u_int32_t       _reserved[2];   /* for future use */
+               thread_t        sb_cfil_thread; /* content filter thread */
+               u_int32_t       sb_cfil_refs;   /* # of nested calls */
+               u_int32_t       sb_preconn_hiwat; /* preconnect hiwat mark */

        } so_rcv, so_snd;
 #define        SB_MAX          (8192*1024)     /* default for max chars in sockbuf */
        } so_rcv, so_snd;
 #define        SB_MAX          (8192*1024)     /* default for max chars in sockbuf */

-#define LOW_SB_MAX     (2*9*1024)      /* lower limit on max socket buffer
-                                          size, 2 max datagrams */
+#define        LOW_SB_MAX      (2*9*1024)      /* lower limit on max socket buffer
+                                       size, 2 max datagrams */

 #define        SB_LOCK         0x1             /* lock on data queue */
 #define        SB_NOINTR       0x2             /* operations not interruptible */
 #define        SB_RECV         0x4             /* this is rcv sb */
 #define        SB_LOCK         0x1             /* lock on data queue */
 #define        SB_NOINTR       0x2             /* operations not interruptible */
 #define        SB_RECV         0x4             /* this is rcv sb */


@@ -215,13 +217,13 @@ struct socket {
 #define        SB_KNOTE        0x40            /* kernel note attached */
 #define        SB_DROP         0x80            /* does not accept any more data */
 #define        SB_UNIX         0x100           /* UNIX domain socket buffer */
 #define        SB_KNOTE        0x40            /* kernel note attached */
 #define        SB_DROP         0x80            /* does not accept any more data */
 #define        SB_UNIX         0x100           /* UNIX domain socket buffer */

-#define SB_USRSIZE     0x200           /* user specified sbreserve */
+#define        SB_USRSIZE      0x200           /* user specified sbreserve */

 #define        SB_AUTOSIZE     0x400           /* automatically size socket buffer */
 #define        SB_TRIM         0x800           /* Trim the socket buffer */
 #define        SB_NOCOMPRESS   0x1000          /* do not compress socket buffer */
 #define        SB_AUTOSIZE     0x400           /* automatically size socket buffer */
 #define        SB_TRIM         0x800           /* Trim the socket buffer */
 #define        SB_NOCOMPRESS   0x1000          /* do not compress socket buffer */

-
+#define        SB_SNDBYTE_CNT  0x2000          /* keep track of snd bytes per interface */

        caddr_t so_tpcb;                /* Misc. protocol control block, used
        caddr_t so_tpcb;                /* Misc. protocol control block, used

-                                          by some kexts */
+                                       by some kexts */

 
        void            (*so_event)(struct socket *, void *, u_int32_t);
        void            *so_eventarg;   /* Arg for above */
 
        void            (*so_event)(struct socket *, void *, u_int32_t);
        void            *so_eventarg;   /* Arg for above */


@@ -229,107 +231,136 @@ struct socket {
        /* NB: generation count must not be first; easiest to make it last. */
        so_gen_t so_gencnt;             /* generation count */
        TAILQ_HEAD(, eventqelt) so_evlist;
        /* NB: generation count must not be first; easiest to make it last. */
        so_gen_t so_gencnt;             /* generation count */
        TAILQ_HEAD(, eventqelt) so_evlist;

-       boolean_t       cached_in_sock_layer; /* bundled with inpcb and tcpcb */

        STAILQ_ENTRY(socket) so_cache_ent;      /* socache entry */
        STAILQ_ENTRY(socket) so_cache_ent;      /* socache entry */

+       caddr_t         so_saved_pcb;           /* Saved pcb when cacheing */

        u_int32_t       cache_timestamp;        /* time socket was cached */
        u_int32_t       cache_timestamp;        /* time socket was cached */

-       caddr_t         so_saved_pcb;   /* Saved pcb when cacheing */
+
+       pid_t           last_pid;       /* pid of most recent accessor */
+       u_int64_t       last_upid;      /* upid of most recent accessor */
+

        struct mbuf     *so_temp;       /* Holding area for outbound frags */
        /* Plug-in support - make the socket interface overridable */
        struct mbuf     *so_tail;
        struct socket_filter_entry *so_filt;    /* NKE hook */
        struct mbuf     *so_temp;       /* Holding area for outbound frags */
        /* Plug-in support - make the socket interface overridable */
        struct mbuf     *so_tail;
        struct socket_filter_entry *so_filt;    /* NKE hook */

-       u_int32_t       so_flags;       /* Flags */
-#define        SOF_NOSIGPIPE   0x1
-#define        SOF_NOADDRAVAIL 0x2     /* EADDRNOTAVAIL if src addr is gone */
-#define        SOF_PCBCLEARING 0x4     /* pru_disconnect done; don't call pru_detach */
-#define        SOF_DEFUNCT     0x8     /* socket marked as inactive */
-#define        SOF_CLOSEWAIT   0x10    /* blocked in close awaiting some events */
-#define SOF_REUSESHAREUID 0x40 /* Allows SO_REUSEADDR/SO_REUSEPORT
-                                  for multiple so_uid */
-#define        SOF_MULTIPAGES  0x80    /* jumbo clusters may be used for sosend */
-#define SOF_ABORTED    0x100   /* soabort was already called once */
-#define SOF_OVERFLOW   0x200   /* socket was dropped as overflow of listen q */
-#ifdef __APPLE_API_PRIVATE
-#define SOF_NOTIFYCONFLICT     0x400   /* notify that a bind was done on a
-                                          port already in use */
-#endif
-#define        SOF_UPCALLCLOSEWAIT     0x800   /* block close until upcall returns  */
-#define SOF_BINDRANDOMPORT     0x1000  /* Randomized port number for bind */
-#define SOF_NPX_SETOPTSHUT     0x2000  /* Non POSIX extension to allow
-                                          setsockopt(2) after shut down */
-#define SOF_RECV_TRAFFIC_CLASS 0x4000  /* Receive TC as ancillary data */
-#define        SOF_NODEFUNCT           0x8000  /* socket cannot be defunct'd */
-#define        SOF_PRIVILEGED_TRAFFIC_CLASS 0x10000 /* traffic class is privileged */
-#define SOF_SUSPENDED          0x20000 /* i/f output queue is suspended */
-#define SOF_INCOMP_INPROGRESS  0x40000 /* incomp socket is being processed */
-#define        SOF_NOTSENT_LOWAT       0x80000 /* A different lowat on not sent
-                                          data has been set */
-#define SOF_KNOTE      0x100000        /* socket is on the EV_SOCK klist */
-#define SOF_USELRO     0x200000        /* TCP must use LRO on these sockets */
-#define SOF_ENABLE_MSGS 0x400000       /* TCP must enable message delivery */
-#define SOF_FLOW_DIVERT        0x800000        /* Flow Divert is enabled */
-#define        SOF_MP_SUBFLOW  0x1000000       /* is a multipath subflow socket */
-#define SOF_MPTCP_TRUE  0x2000000 /* Established e2e MPTCP connection */
-#define SOF_MPTCP_CLIENT        0x4000000 /* Only client starts addtnal flows */
-#define SOF_MP_SEC_SUBFLOW      0x8000000 /* Set up secondary flow */
-#define SOF_MP_TRYFAILOVER     0x10000000 /* Failing subflow */
+       u_int32_t       so_flags;               /* Flags */
+#define        SOF_NOSIGPIPE           0x00000001
+#define        SOF_NOADDRAVAIL         0x00000002 /* EADDRNOTAVAIL if src addr is gone */
+#define        SOF_PCBCLEARING         0x00000004 /* pru_disconnect done; don't
+                                               call pru_detach */
+#define        SOF_DEFUNCT             0x00000008 /* socket marked as inactive */
+#define        SOF_CLOSEWAIT           0x00000010 /* blocked in close awaiting some events */
+#define        SOF_REUSESHAREUID       0x00000040 /* Allows SO_REUSEADDR/SO_REUSEPORT
+                                               for multiple so_uid */
+#define        SOF_MULTIPAGES          0x00000080 /* jumbo clusters may be used for sosend */
+#define        SOF_ABORTED             0x00000100 /* soabort was already called once */
+#define        SOF_OVERFLOW            0x00000200 /* socket was dropped as overflow of
+                                               listen q */
+#define        SOF_NOTIFYCONFLICT      0x00000400 /* notify that a bind was done on a
+                                               port already in use */
+#define        SOF_UPCALLCLOSEWAIT     0x00000800 /* block close until upcall returns */
+#define        SOF_BINDRANDOMPORT      0x00001000 /* Randomized port number for bind */
+#define        SOF_NPX_SETOPTSHUT      0x00002000 /* Non POSIX extension to allow
+                                               setsockopt(2) after shut down */
+#define        SOF_RECV_TRAFFIC_CLASS  0x00004000 /* Receive TC as ancillary data */
+#define        SOF_NODEFUNCT           0x00008000 /* socket cannot be defunct'd */
+#define        SOF_PRIVILEGED_TRAFFIC_CLASS 0x00010000 /* traffic class is privileged */
+#define        SOF_SUSPENDED           0x00020000 /* i/f output queue is suspended */
+#define        SOF_INCOMP_INPROGRESS   0x00040000 /* incomp socket is being processed */
+#define        SOF_NOTSENT_LOWAT       0x00080000 /* A different lowat on not sent
+                                               data has been set */
+#define        SOF_KNOTE               0x00100000 /* socket is on the EV_SOCK klist */
+#define        SOF_USELRO              0x00200000 /* TCP must use LRO on these sockets */
+#define        SOF_ENABLE_MSGS         0x00400000 /* TCP must enable message delivery */
+#define        SOF_FLOW_DIVERT         0x00800000 /* Flow Divert is enabled */
+#define        SOF_MP_SUBFLOW          0x01000000 /* is a multipath subflow socket */
+#define        SOF_MPTCP_TRUE          0x02000000 /* Established e2e MPTCP connection */
+#define        SOF_MPTCP_CLIENT        0x04000000 /* Only client starts addtnal flows */
+#define        SOF_MP_SEC_SUBFLOW      0x08000000 /* Set up secondary flow */
+#define        SOF_MP_TRYFAILOVER      0x10000000 /* Failing subflow */

 #define        SOF_DELEGATED           0x20000000 /* on behalf of another process */
 #define        SOF_DELEGATED           0x20000000 /* on behalf of another process */

+#define        SOF_MPTCP_FASTJOIN      0x40000000 /* fast join support */
+#define        SOF_CONTENT_FILTER      0x80000000 /* Content filter enabled */
+

        uint32_t        so_upcallusecount; /* number of upcalls in progress */
        int             so_usecount;    /* refcounting of socket use */;
        int             so_retaincnt;
        u_int32_t       so_filteruse;   /* usecount for the socket filters */
        uint32_t        so_upcallusecount; /* number of upcalls in progress */
        int             so_usecount;    /* refcounting of socket use */;
        int             so_retaincnt;
        u_int32_t       so_filteruse;   /* usecount for the socket filters */

-       u_int32_t       so_traffic_mgt_flags;   /* traffic_mgt socket config */
+       u_int16_t       so_traffic_class;
+       int8_t          so_netsvctype;
+       u_int8_t        so_restrictions;

        thread_t        so_send_filt_thread;
        thread_t        so_send_filt_thread;

-       u_int32_t       so_restrictions;

 
        /* for debug pruposes */
 #define        SO_LCKDBG_MAX 4 /* number of debug locking Link Registers recorded */
        void    *lock_lr[SO_LCKDBG_MAX];        /* locking calling history */
 
        /* for debug pruposes */
 #define        SO_LCKDBG_MAX 4 /* number of debug locking Link Registers recorded */
        void    *lock_lr[SO_LCKDBG_MAX];        /* locking calling history */

-       int     next_lock_lr;

        void    *unlock_lr[SO_LCKDBG_MAX];      /* unlocking caller history */
        void    *unlock_lr[SO_LCKDBG_MAX];      /* unlocking caller history */

-       int     next_unlock_lr;
-       void *reserved; /* reserved for future use */
+       u_int8_t        next_lock_lr;
+       u_int8_t        next_unlock_lr;
+
+       u_int16_t       so_pktheadroom; /* headroom before packet payload */
+
+       u_int32_t       so_ifdenied_notifies; /* # of notifications generated */

 
        struct label    *so_label;      /* MAC label for socket */
        struct label    *so_peerlabel;  /* cached MAC label for socket peer */
        thread_t        so_background_thread;   /* thread that marked
 
        struct label    *so_label;      /* MAC label for socket */
        struct label    *so_peerlabel;  /* cached MAC label for socket peer */
        thread_t        so_background_thread;   /* thread that marked

-                                                  this socket background */
-       int             so_traffic_class;
-
-       u_int64_t       last_upid;      /* upid of most recent accessor */
-       pid_t           last_pid;       /* pid of most recent accessor */
+                                               this socket background */

        struct data_stats so_tc_stats[SO_TC_STATS_MAX];
        struct klist    so_klist;               /* klist for EV_SOCK events */
 
        struct msg_state *so_msg_state;         /* unordered snd/rcv state */
        struct flow_divert_pcb  *so_fd_pcb;     /* Flow Divert control block */
        struct data_stats so_tc_stats[SO_TC_STATS_MAX];
        struct klist    so_klist;               /* klist for EV_SOCK events */
 
        struct msg_state *so_msg_state;         /* unordered snd/rcv state */
        struct flow_divert_pcb  *so_fd_pcb;     /* Flow Divert control block */

+
+       struct cfil_info        *so_cfil;
+

        u_int32_t       so_eventmask;           /* event mask */
 
        u_int32_t       so_eventmask;           /* event mask */
 

-       u_int64_t       e_upid;         /* upid of the effective owner */

        pid_t           e_pid;          /* pid of the effective owner */
        pid_t           e_pid;          /* pid of the effective owner */

+       u_int64_t       e_upid;         /* upid of the effective owner */

 
        uuid_t          last_uuid;      /* uuid of most recent accessor */
        uuid_t          e_uuid;         /* uuid of effective owner */
 
        uuid_t          last_uuid;      /* uuid of most recent accessor */
        uuid_t          e_uuid;         /* uuid of effective owner */

+       uuid_t          so_vuuid;       /* UUID of the Voucher originator */

 
        int32_t         so_policy_gencnt; /* UUID policy gencnt */
 
        int32_t         so_policy_gencnt; /* UUID policy gencnt */

-       u_int32_t       so_ifdenied_notifies; /* # of notifications generated */
+
+       u_int32_t       so_flags1;
+#define        SOF1_POST_FALLBACK_SYNC         0x00000001 /* fallback to TCP */
+#define        SOF1_AWDL_PRIVILEGED            0x00000002 /* unused */
+#define        SOF1_IF_2KCL                    0x00000004 /* interface prefers 2 KB clusters */
+#define        SOF1_DEFUNCTINPROG              0x00000008
+#define        SOF1_DATA_IDEMPOTENT            0x00000010 /* idempotent data for TFO */
+#define        SOF1_PRECONNECT_DATA            0x00000020 /* request for preconnect data */
+#define        SOF1_EXTEND_BK_IDLE_WANTED      0x00000040 /* option set */
+#define        SOF1_EXTEND_BK_IDLE_INPROG      0x00000080 /* socket */
+#define        SOF1_CACHED_IN_SOCK_LAYER       0x00000100 /* bundled with inpcb and
+                                                     tcpcb */
+#define        SOF1_TFO_REWIND                 0x00000200 /* rewind mptcp meta data */
+#define        SOF1_CELLFALLBACK               0x00000400 /* Initiated by cell fallback */
+#define        SOF1_QOSMARKING_ALLOWED         0x00000800 /* policy allows DSCP map */
+#define        SOF1_TC_NET_SERV_TYPE           0x00001000 /* traffic class set by SO_NETWORK_SERVICE_TYPE */
+#define        SOF1_TRAFFIC_MGT_SO_BACKGROUND  0x00002000 /* background socket */
+#define        SOF1_TRAFFIC_MGT_TCP_RECVBG     0x00004000 /* Only TCP sockets, receiver throttling */
+#define        SOF1_QOSMARKING_POLICY_OVERRIDE 0x00008000 /* Opt-out of QoS marking NECP policy */
+       u_int64_t       so_extended_bk_start;

 };
 
 /* Control message accessor in mbufs */
 
 };
 
 /* Control message accessor in mbufs */
 

-#define _MIN_NXT_CMSGHDR_PTR(cmsg)                                     \
+#define        _MIN_NXT_CMSGHDR_PTR(cmsg)                                      \

        ((char *)(cmsg) +                                               \
            __DARWIN_ALIGN32((__uint32_t)(cmsg)->cmsg_len) +            \
            __DARWIN_ALIGN32(sizeof(struct cmsghdr)))
 
        ((char *)(cmsg) +                                               \
            __DARWIN_ALIGN32((__uint32_t)(cmsg)->cmsg_len) +            \
            __DARWIN_ALIGN32(sizeof(struct cmsghdr)))
 

-#define M_FIRST_CMSGHDR(m)                                             \
-        ((char *)(m) != (char *)0L &&                                  \
+#define        M_FIRST_CMSGHDR(m)                                              \
+       ((char *)(m) != (char *)0L &&                                   \

        (size_t)(m)->m_len >= sizeof (struct cmsghdr) &&                \
        (socklen_t)(m)->m_len >=                                        \
        __DARWIN_ALIGN32(((struct cmsghdr *)(void *)(m)->m_data)->cmsg_len) ? \
        (struct cmsghdr *)(void *)(m)->m_data : (struct cmsghdr *)0L)
 
        (size_t)(m)->m_len >= sizeof (struct cmsghdr) &&                \
        (socklen_t)(m)->m_len >=                                        \
        __DARWIN_ALIGN32(((struct cmsghdr *)(void *)(m)->m_data)->cmsg_len) ? \
        (struct cmsghdr *)(void *)(m)->m_data : (struct cmsghdr *)0L)
 

-#define M_NXT_CMSGHDR(m, cmsg)                                         \
-        ((char *)(cmsg) == (char *)0L ? M_FIRST_CMSGHDR(m) :           \
+#define        M_NXT_CMSGHDR(m, cmsg)                                          \
+       ((char *)(cmsg) == (char *)0L ? M_FIRST_CMSGHDR(m) :            \

        _MIN_NXT_CMSGHDR_PTR(cmsg) > ((char *)(m)->m_data) + (m)->m_len ||  \
        _MIN_NXT_CMSGHDR_PTR(cmsg) < (char *)(m)->m_data ?              \
        (struct cmsghdr *)0L /* NULL */ :                               \
        _MIN_NXT_CMSGHDR_PTR(cmsg) > ((char *)(m)->m_data) + (m)->m_len ||  \
        _MIN_NXT_CMSGHDR_PTR(cmsg) < (char *)(m)->m_data ?              \
        (struct cmsghdr *)0L /* NULL */ :                               \


@@ -355,7 +386,7 @@ struct socket {
 #define        SS_COMP                 0x1000  /* unaccepted, complete connection */
 #define        SS_ISDISCONNECTED       0x2000  /* socket disconnected from peer */
 #define        SS_DRAINING             0x4000  /* close waiting for blocked system
 #define        SS_COMP                 0x1000  /* unaccepted, complete connection */
 #define        SS_ISDISCONNECTED       0x2000  /* socket disconnected from peer */
 #define        SS_DRAINING             0x4000  /* close waiting for blocked system

-                                          calls to drain */
+                                               calls to drain */

 #define        SS_DEFUNCT              0x8000  /* has been fully defunct'd */
 #endif /* KERNEL_PRIVATE */
 
 #define        SS_DEFUNCT              0x8000  /* has been fully defunct'd */
 #endif /* KERNEL_PRIVATE */
 


@@ -367,8 +398,8 @@ struct socket {
 
 #ifdef PRIVATE
 /* Flags returned in data field for EVFILT_SOCK events. */
 
 #ifdef PRIVATE
 /* Flags returned in data field for EVFILT_SOCK events. */

-#define SOCKEV_CONNECTED       0x00000001 /* connected */
-#define SOCKEV_DISCONNECTED    0x00000002 /* disconnected */
+#define        SOCKEV_CONNECTED        0x00000001 /* connected */
+#define        SOCKEV_DISCONNECTED     0x00000002 /* disconnected */

 #endif /* PRIVATE */
 
 #pragma pack(4)
 #endif /* PRIVATE */
 
 #pragma pack(4)


@@ -394,8 +425,8 @@ struct      xsocket {
        short                   so_linger;
        short                   so_state;
        _XSOCKET_PTR(caddr_t)   so_pcb;         /* another convenient handle */
        short                   so_linger;
        short                   so_state;
        _XSOCKET_PTR(caddr_t)   so_pcb;         /* another convenient handle */

-       int                             xso_protocol;
-       int                             xso_family;
+       int                     xso_protocol;
+       int                     xso_family;

        short                   so_qlen;
        short                   so_incqlen;
        short                   so_qlimit;
        short                   so_qlen;
        short                   so_incqlen;
        short                   so_qlimit;


@@ -403,8 +434,8 @@ struct      xsocket {
        u_short                 so_error;
        pid_t                   so_pgid;
        u_int32_t               so_oobmark;
        u_short                 so_error;
        pid_t                   so_pgid;
        u_int32_t               so_oobmark;

-       struct xsockbuf so_rcv;
-       struct xsockbuf so_snd;
+       struct xsockbuf         so_rcv;
+       struct xsockbuf         so_snd;

        uid_t                   so_uid;         /* XXX */
 };
 
        uid_t                   so_uid;         /* XXX */
 };
 


@@ -431,12 +462,15 @@ struct    xsocket64 {
 };
 
 #ifdef PRIVATE
 };
 
 #ifdef PRIVATE

-#define XSO_SOCKET     0x001
-#define XSO_RCVBUF     0x002
-#define XSO_SNDBUF     0x004
-#define XSO_STATS      0x008
-#define XSO_INPCB      0x010
-#define XSO_TCPCB      0x020
+#define        XSO_SOCKET      0x001
+#define        XSO_RCVBUF      0x002
+#define        XSO_SNDBUF      0x004
+#define        XSO_STATS       0x008
+#define        XSO_INPCB       0x010
+#define        XSO_TCPCB       0x020
+#define        XSO_KCREG       0x040
+#define        XSO_KCB         0x080
+#define        XSO_EVT         0x100

 
 struct xsocket_n {
        u_int32_t               xso_len;        /* length of this structure */
 
 struct xsocket_n {
        u_int32_t               xso_len;        /* length of this structure */


@@ -447,8 +481,8 @@ struct      xsocket_n {
        short                   so_linger;
        short                   so_state;
        u_int64_t               so_pcb;         /* another convenient handle */
        short                   so_linger;
        short                   so_state;
        u_int64_t               so_pcb;         /* another convenient handle */

-       int                             xso_protocol;
-       int                             xso_family;
+       int                     xso_protocol;
+       int                     xso_family;

        short                   so_qlen;
        short                   so_incqlen;
        short                   so_qlimit;
        short                   so_qlen;
        short                   so_incqlen;
        short                   so_qlimit;


@@ -457,6 +491,8 @@ struct      xsocket_n {
        pid_t                   so_pgid;
        u_int32_t               so_oobmark;
        uid_t                   so_uid;         /* XXX */
        pid_t                   so_pgid;
        u_int32_t               so_oobmark;
        uid_t                   so_uid;         /* XXX */

+       pid_t                   so_last_pid;
+       pid_t                   so_e_pid;

 };
 
 struct xsockbuf_n {
 };
 
 struct xsockbuf_n {


@@ -476,6 +512,27 @@ struct xsockstat_n {
        u_int32_t               xst_kind;       /* XSO_STATS */
        struct data_stats       xst_tc_stats[SO_TC_STATS_MAX];
 };
        u_int32_t               xst_kind;       /* XSO_STATS */
        struct data_stats       xst_tc_stats[SO_TC_STATS_MAX];
 };

+
+/*
+ * Global socket statistics
+ */
+struct soextbkidlestat {
+       u_int32_t       so_xbkidle_maxperproc;
+       u_int32_t       so_xbkidle_time;
+       u_int32_t       so_xbkidle_rcvhiwat;
+       int32_t         so_xbkidle_notsupp;
+       int32_t         so_xbkidle_toomany;
+       int32_t         so_xbkidle_wantok;
+       int32_t         so_xbkidle_active;
+       int32_t         so_xbkidle_nocell;
+       int32_t         so_xbkidle_notime;
+       int32_t         so_xbkidle_forced;
+       int32_t         so_xbkidle_resumed;
+       int32_t         so_xbkidle_expired;
+       int32_t         so_xbkidle_resched;
+       int32_t         so_xbkidle_nodlgtd;
+       int32_t         so_xbkidle_drained;
+};

 #endif /* PRIVATE */
 
 #pragma pack()
 #endif /* PRIVATE */
 
 #pragma pack()


@@ -521,40 +578,46 @@ struct kextcb {
 #define        EXT_NULL        0x0             /* STATE: Not in use */
 
 /* Hints for socket event processing */
 #define        EXT_NULL        0x0             /* STATE: Not in use */
 
 /* Hints for socket event processing */

-#define SO_FILT_HINT_LOCKED      0x00000001    /* socket is already locked */
-#define SO_FILT_HINT_CONNRESET   0x00000002    /* Reset is received */
-#define SO_FILT_HINT_CANTRCVMORE 0x00000004    /* No more data to read */
-#define SO_FILT_HINT_CANTSENDMORE 0x00000008   /* Can't write more data */
-#define SO_FILT_HINT_TIMEOUT     0x00000010    /* timeout */
-#define SO_FILT_HINT_NOSRCADDR   0x00000020    /* No src address available */
-#define SO_FILT_HINT_IFDENIED    0x00000040    /* interface denied access */
-#define SO_FILT_HINT_SUSPEND     0x00000080    /* output queue suspended */
-#define SO_FILT_HINT_RESUME      0x00000100    /* output queue resumed */
-#define SO_FILT_HINT_KEEPALIVE  0x00000200     /* TCP Keepalive received */
-#define SO_FILT_HINT_ADAPTIVE_WTIMO 0x00000400 /* TCP adaptive write timeout */
-#define SO_FILT_HINT_ADAPTIVE_RTIMO 0x00000800 /* TCP adaptive read timeout */
-#define        SO_FILT_HINT_CONNECTED    0x00001000    /* socket is connected */
-#define        SO_FILT_HINT_DISCONNECTED 0x00002000    /* socket is disconnected */
-#define        SO_FILT_HINT_CONNINFO_UPDATED 0x00004000 /* updated conninfo avail. */
+#define        SO_FILT_HINT_LOCKED     0x00000001      /* socket is already locked */
+#define        SO_FILT_HINT_CONNRESET  0x00000002      /* Reset is received */
+#define        SO_FILT_HINT_CANTRCVMORE        0x00000004      /* No more data to read */
+#define        SO_FILT_HINT_CANTSENDMORE       0x00000008      /* Can't write more data */
+#define        SO_FILT_HINT_TIMEOUT    0x00000010      /* timeout */
+#define        SO_FILT_HINT_NOSRCADDR  0x00000020      /* No src address available */
+#define        SO_FILT_HINT_IFDENIED   0x00000040      /* interface denied access */
+#define        SO_FILT_HINT_SUSPEND    0x00000080      /* output queue suspended */
+#define        SO_FILT_HINT_RESUME     0x00000100      /* output queue resumed */
+#define        SO_FILT_HINT_KEEPALIVE  0x00000200      /* TCP Keepalive received */
+#define        SO_FILT_HINT_ADAPTIVE_WTIMO     0x00000400  /* TCP adaptive write timeout */
+#define        SO_FILT_HINT_ADAPTIVE_RTIMO     0x00000800  /* TCP adaptive read timeout */
+#define        SO_FILT_HINT_CONNECTED  0x00001000      /* socket is connected */
+#define        SO_FILT_HINT_DISCONNECTED       0x00002000      /* socket is disconnected */
+#define        SO_FILT_HINT_CONNINFO_UPDATED   0x00004000 /* updated conninfo avail. */

 #define        SO_FILT_HINT_MPFAILOVER 0x00008000      /* multipath failover */
 #define        SO_FILT_HINT_MPSTATUS   0x00010000      /* multipath status */
 #define        SO_FILT_HINT_MPFAILOVER 0x00008000      /* multipath failover */
 #define        SO_FILT_HINT_MPSTATUS   0x00010000      /* multipath status */

-#define SO_FILT_HINT_MUSTRST   0x00020000      /* must send RST and close */
+#define        SO_FILT_HINT_MUSTRST    0x00020000      /* must send RST and close */
+#define        SO_FILT_HINT_MPFASTJ    0x00040000      /* can do MPTCP fast join */
+#define        SO_FILT_HINT_DELETEOK   0x00100000      /* Ok to delete socket */
+#define        SO_FILT_HINT_MPCANTRCVMORE      0x00200000      /* MPTCP DFIN Received */
+#define        SO_FILT_HINT_NOTIFY_ACK 0x00400000      /* Notify Acknowledgement */

 
 #define        SO_FILT_HINT_BITS \
        "\020\1LOCKED\2CONNRESET\3CANTRCVMORE\4CANTSENDMORE\5TIMEOUT"   \
        "\6NOSRCADDR\7IFDENIED\10SUSPEND\11RESUME\12KEEPALIVE\13AWTIMO" \
 
 #define        SO_FILT_HINT_BITS \
        "\020\1LOCKED\2CONNRESET\3CANTRCVMORE\4CANTSENDMORE\5TIMEOUT"   \
        "\6NOSRCADDR\7IFDENIED\10SUSPEND\11RESUME\12KEEPALIVE\13AWTIMO" \

-       "\14ARTIMO\15CONNECTED\16DISCONNECTED\17CONNINFO_UPDATED" \
-       "\20MPFAILOVER\21MPSTATUS\22MUSTRST"
+       "\14ARTIMO\15CONNECTED\16DISCONNECTED\17CONNINFO_UPDATED"       \
+       "\20MPFAILOVER\21MPSTATUS\22MUSTRST\23MPFASTJ\25DELETEOK"       \
+       "\26MPCANTRCVMORE\27NOTIFYACK"

 
 /* Mask for hints that have corresponding kqueue events */
 
 /* Mask for hints that have corresponding kqueue events */

-#define SO_FILT_HINT_EV                                                        \
+#define        SO_FILT_HINT_EV                                                 \

        (SO_FILT_HINT_CONNRESET | SO_FILT_HINT_CANTRCVMORE |            \
        SO_FILT_HINT_CANTSENDMORE | SO_FILT_HINT_TIMEOUT |              \
        SO_FILT_HINT_NOSRCADDR | SO_FILT_HINT_IFDENIED |                \
        SO_FILT_HINT_SUSPEND | SO_FILT_HINT_RESUME |                    \
        SO_FILT_HINT_KEEPALIVE | SO_FILT_HINT_ADAPTIVE_WTIMO |          \
        SO_FILT_HINT_ADAPTIVE_RTIMO | SO_FILT_HINT_CONNECTED |          \
        (SO_FILT_HINT_CONNRESET | SO_FILT_HINT_CANTRCVMORE |            \
        SO_FILT_HINT_CANTSENDMORE | SO_FILT_HINT_TIMEOUT |              \
        SO_FILT_HINT_NOSRCADDR | SO_FILT_HINT_IFDENIED |                \
        SO_FILT_HINT_SUSPEND | SO_FILT_HINT_RESUME |                    \
        SO_FILT_HINT_KEEPALIVE | SO_FILT_HINT_ADAPTIVE_WTIMO |          \
        SO_FILT_HINT_ADAPTIVE_RTIMO | SO_FILT_HINT_CONNECTED |          \

-       SO_FILT_HINT_DISCONNECTED | SO_FILT_HINT_CONNINFO_UPDATED)
+       SO_FILT_HINT_DISCONNECTED | SO_FILT_HINT_CONNINFO_UPDATED |     \
+       SO_FILT_HINT_NOTIFY_ACK)

 
 #if SENDFILE
 struct sf_buf {
 
 #if SENDFILE
 struct sf_buf {


@@ -578,26 +641,33 @@ struct sf_buf {
        }                                                               \
 }
 
        }                                                               \
 }
 

-#define SB_MB_CHECK(sb) do {                                           \
+#define        SB_MB_CHECK(sb) do {                                            \

        if (((sb)->sb_mb != NULL &&                                     \
            (sb)->sb_cc == 0) ||                                        \
            ((sb)->sb_mb == NULL && (sb)->sb_cc > 0))                   \
                panic("corrupt so_rcv: sb_mb %p sb_cc %d\n",            \
                    (sb)->sb_mb, (sb)->sb_cc);                          \
        if (((sb)->sb_mb != NULL &&                                     \
            (sb)->sb_cc == 0) ||                                        \
            ((sb)->sb_mb == NULL && (sb)->sb_cc > 0))                   \
                panic("corrupt so_rcv: sb_mb %p sb_cc %d\n",            \
                    (sb)->sb_mb, (sb)->sb_cc);                          \

-} while(0)
+} while (0)

 
 

-#define        SODEFUNCTLOG(x)         do { if (sodefunctlog) printf x; } while (0)
-#define        SOTHROTTLELOG(x)        do { if (sothrottlelog) printf x; } while (0)
+#define        SODEFUNCTLOG(fmt, ...)  do {            \
+       if (sodefunctlog)                       \
+               printf(fmt, __VA_ARGS__);       \
+} while (0)
+
+#define        SOTHROTTLELOG(fmt, ...) do {            \
+       if (sothrottlelog)                      \
+               printf(fmt, __VA_ARGS__);       \
+} while (0)

 
 /*
  * For debugging traffic class behaviors
  */
 
 /*
  * For debugging traffic class behaviors
  */

-#define SOTCDB_NO_DSCP         0x01    /* Do not set DSCP code in IP header */
-#define SOTCDB_NO_MTC          0x02    /* Do not set the mbuf traffic class */
-#define SOTCDB_NO_SENDTCPBG    0x04    /* Do not use background TCP CC algorithm for sender */
-#define SOTCDB_NO_LCLTST       0x08    /* Do not test for local destination for setting DSCP */
-#define SOTCDB_NO_DSCPTST      0x10    /* Overwritte any existing DSCP code */
-#define SOTCDB_NO_RECVTCPBG    0x20    /* Do not use throttling on receiver-side of TCP */
+#define        SOTCDB_RESERVED         0x01
+#define        SOTCDB_NO_MTC           0x02    /* Do not set the mbuf traffic class */
+#define        SOTCDB_NO_SENDTCPBG     0x04    /* Do not use background TCP CC algorithm for sender */
+#define        SOTCDB_NO_LCLTST        0x08    /* Do not test for local destination for setting DSCP */
+#define        SOTCDB_NO_DSCPTST       0x10    /* Overwritte any existing DSCP code */
+#define        SOTCDB_NO_RECVTCPBG     0x20    /* Do not use throttling on receiver-side of TCP */

 #define        SOTCDB_NO_PRIVILEGED    0x40    /* Do not set privileged traffic flag */
 
 #define        SOCK_DOM(so)                    ((so)->so_proto->pr_domain->dom_family)
 #define        SOTCDB_NO_PRIVILEGED    0x40    /* Do not set privileged traffic flag */
 
 #define        SOCK_DOM(so)                    ((so)->so_proto->pr_domain->dom_family)


@@ -614,9 +684,11 @@ struct sf_buf {
 struct so_procinfo {
        pid_t           spi_pid;
        pid_t           spi_epid;
 struct so_procinfo {
        pid_t           spi_pid;
        pid_t           spi_epid;

+       uuid_t          spi_uuid;
+       uuid_t          spi_euuid;
+       int             spi_delegated;

 };
 
 };
 

-extern int maxsockets;

 extern u_int32_t sb_max;
 extern so_gen_t so_gencnt;
 extern int socket_debug;
 extern u_int32_t sb_max;
 extern so_gen_t so_gencnt;
 extern int socket_debug;


@@ -625,14 +697,24 @@ extern int sosendjcl_ignore_capab;
 extern int sodefunctlog;
 extern int sothrottlelog;
 extern int sorestrictrecv;
 extern int sodefunctlog;
 extern int sothrottlelog;
 extern int sorestrictrecv;

+extern int sorestrictsend;

 extern int somaxconn;
 extern uint32_t tcp_autosndbuf_max;
 extern u_int32_t sotcdb;
 extern u_int32_t net_io_policy_throttled;
 extern u_int32_t net_io_policy_log;
 extern int somaxconn;
 extern uint32_t tcp_autosndbuf_max;
 extern u_int32_t sotcdb;
 extern u_int32_t net_io_policy_throttled;
 extern u_int32_t net_io_policy_log;

+extern u_int32_t net_io_policy_throttle_best_effort;

 #if CONFIG_PROC_UUID_POLICY
 extern u_int32_t net_io_policy_uuid;
 #endif /* CONFIG_PROC_UUID_POLICY */
 #if CONFIG_PROC_UUID_POLICY
 extern u_int32_t net_io_policy_uuid;
 #endif /* CONFIG_PROC_UUID_POLICY */

+
+extern struct soextbkidlestat soextbkidlestat;
+
+struct net_qos_dscp_map {
+       u_int8_t        sotc_to_dscp[SO_TC_MAX];
+       u_int8_t        netsvctype_to_dscp[_NET_SERVICE_TYPE_COUNT];
+};
+

 #endif /* BSD_KERNEL_PRIVATE */
 
 struct mbuf;
 #endif /* BSD_KERNEL_PRIVATE */
 
 struct mbuf;


@@ -640,6 +722,18 @@ struct sockaddr;
 struct ucred;
 struct uio;
 
 struct ucred;
 struct uio;
 

+#define        SOCK_MSG_SA 0x01
+#define        SOCK_MSG_CONTROL 0x02
+#define        SOCK_MSG_DATA 0x04
+
+struct recv_msg_elem {
+       struct uio *uio;
+       struct sockaddr *psa;
+       struct mbuf *controlp;
+       int which;
+       int flags;
+};
+

 /*
  * From uipc_socket and friends
  */
 /*
  * From uipc_socket and friends
  */


@@ -657,6 +751,7 @@ extern int sodisconnect(struct socket *so);
 extern void sofree(struct socket *so);
 extern void sofreelastref(struct socket *, int);
 extern void soisconnected(struct socket *so);
 extern void sofree(struct socket *so);
 extern void sofreelastref(struct socket *, int);
 extern void soisconnected(struct socket *so);

+extern boolean_t socanwrite(struct socket *so);

 extern void soisconnecting(struct socket *so);
 extern void soisdisconnected(struct socket *so);
 extern void soisdisconnecting(struct socket *so);
 extern void soisconnecting(struct socket *so);
 extern void soisdisconnected(struct socket *so);
 extern void soisdisconnecting(struct socket *so);


@@ -669,9 +764,15 @@ extern int sooptcopyout(struct sockopt *sopt, void *data, size_t len);
 extern int soreceive(struct socket *so, struct sockaddr **paddr,
     struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp);
 extern int soreserve(struct socket *so, u_int32_t sndcc, u_int32_t rcvcc);
 extern int soreceive(struct socket *so, struct sockaddr **paddr,
     struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp);
 extern int soreserve(struct socket *so, u_int32_t sndcc, u_int32_t rcvcc);

+extern void soreserve_preconnect(struct socket *so, unsigned int pre_cc);

 extern void sorwakeup(struct socket *so);
 extern int sosend(struct socket *so, struct sockaddr *addr, struct uio *uio,
     struct mbuf *top, struct mbuf *control, int flags);
 extern void sorwakeup(struct socket *so);
 extern int sosend(struct socket *so, struct sockaddr *addr, struct uio *uio,
     struct mbuf *top, struct mbuf *control, int flags);

+extern int sosend_list(struct socket *so, struct uio **uio, u_int uiocnt,
+    int flags);
+extern int soreceive_list(struct socket *so, struct recv_msg_elem *msgarray,
+    u_int msgcnt, int *flags);
+extern void sonullevent(struct socket *so, void *arg, uint32_t hint);

 __END_DECLS
 
 #ifdef BSD_KERNEL_PRIVATE
 __END_DECLS
 
 #ifdef BSD_KERNEL_PRIVATE


@@ -707,7 +808,7 @@ extern void sblastmbufchk(struct sockbuf *, const char *);
 extern void sblastrecordchk(struct sockbuf *, const char *);
 extern struct mbuf *sbcreatecontrol(caddr_t p, int size, int type, int level);
 extern struct mbuf **sbcreatecontrol_mbuf(caddr_t p, int size, int type,
 extern void sblastrecordchk(struct sockbuf *, const char *);
 extern struct mbuf *sbcreatecontrol(caddr_t p, int size, int type, int level);
 extern struct mbuf **sbcreatecontrol_mbuf(caddr_t p, int size, int type,

-    int level, struct mbuf** m);
+    int level, struct mbuf **m);

 extern void sbdrop(struct sockbuf *sb, int len);
 extern void sbdroprecord(struct sockbuf *sb);
 extern int sbinsertoob(struct sockbuf *sb, struct mbuf *m0);
 extern void sbdrop(struct sockbuf *sb, int len);
 extern void sbdroprecord(struct sockbuf *sb);
 extern int sbinsertoob(struct sockbuf *sb, struct mbuf *m0);


@@ -744,11 +845,11 @@ extern int soconnect(struct socket *so, struct sockaddr *nam);
 extern int soconnectlock(struct socket *so, struct sockaddr *nam, int dolock);
 extern int soconnect2(struct socket *so1, struct socket *so2);
 extern int soconnectxlocked(struct socket *so, struct sockaddr_list **src_sl,
 extern int soconnectlock(struct socket *so, struct sockaddr *nam, int dolock);
 extern int soconnect2(struct socket *so1, struct socket *so2);
 extern int soconnectxlocked(struct socket *so, struct sockaddr_list **src_sl,

-    struct sockaddr_list **dst_sl, struct proc *, uint32_t, associd_t,
-    connid_t *, uint32_t, void *, u_int32_t);
-extern int sodisconnectx(struct socket *so, associd_t, connid_t);
-extern int sodisconnectxlocked(struct socket *so, associd_t, connid_t);
-extern int sopeelofflocked(struct socket *so, associd_t, struct socket **);
+    struct sockaddr_list **dst_sl, struct proc *, uint32_t, sae_associd_t,
+    sae_connid_t *, uint32_t, void *, u_int32_t, uio_t, user_ssize_t *);
+extern int sodisconnectx(struct socket *so, sae_associd_t, sae_connid_t);
+extern int sodisconnectxlocked(struct socket *so, sae_associd_t, sae_connid_t);
+extern int sopeelofflocked(struct socket *so, sae_associd_t, struct socket **);

 extern void soevupcall(struct socket *, u_int32_t);
 /* flags for socreate_internal */
 #define        SOCF_ASYNC      0x1     /* non-blocking socket */
 extern void soevupcall(struct socket *, u_int32_t);
 /* flags for socreate_internal */
 #define        SOCF_ASYNC      0x1     /* non-blocking socket */


@@ -756,19 +857,27 @@ extern void soevupcall(struct socket *, u_int32_t);
 extern int socreate_internal(int dom, struct socket **aso, int type, int proto,
     struct proc *, uint32_t, struct proc *);
 extern int socreate(int dom, struct socket **aso, int type, int proto);
 extern int socreate_internal(int dom, struct socket **aso, int type, int proto,
     struct proc *, uint32_t, struct proc *);
 extern int socreate(int dom, struct socket **aso, int type, int proto);

-extern int socreate_delegate(int dom, struct socket **aso, int type, int proto, pid_t epid);
+extern int socreate_delegate(int dom, struct socket **aso, int type, int proto,
+    pid_t epid);

 extern void sodealloc(struct socket *so);
 extern int sodisconnectlocked(struct socket *so);
 extern void soreference(struct socket *so);
 extern void sodereference(struct socket *so);
 extern void somultipages(struct socket *, boolean_t);
 extern void sodealloc(struct socket *so);
 extern int sodisconnectlocked(struct socket *so);
 extern void soreference(struct socket *so);
 extern void sodereference(struct socket *so);
 extern void somultipages(struct socket *, boolean_t);

+extern void soif2kcl(struct socket *, boolean_t);

 extern int sosetdefunct(struct proc *, struct socket *, int level, boolean_t);
 extern int sodefunct(struct proc *, struct socket *, int level);
 extern int sosetdefunct(struct proc *, struct socket *, int level, boolean_t);
 extern int sodefunct(struct proc *, struct socket *, int level);

+extern int soresume(struct proc *, struct socket *, int);
+extern void resume_proc_sockets(proc_t);
+extern int so_check_extended_bk_idle_time(struct socket *);
+extern void so_drain_extended_bk_idle(struct socket *);

 extern void sohasoutofband(struct socket *so);
 extern void sodisconnectwakeup(struct socket *so);
 extern int soisthrottled(struct socket *so);
 extern int soisprivilegedtraffic(struct socket *so);
 extern int soissrcbackground(struct socket *so);
 extern void sohasoutofband(struct socket *so);
 extern void sodisconnectwakeup(struct socket *so);
 extern int soisthrottled(struct socket *so);
 extern int soisprivilegedtraffic(struct socket *so);
 extern int soissrcbackground(struct socket *so);

+extern int soissrcrealtime(struct socket *so);
+extern int soissrcbesteffort(struct socket *so);

 extern int solisten(struct socket *so, int backlog);
 extern struct socket *sodropablereq(struct socket *head);
 extern int socket_lock(struct socket *so, int refcount);
 extern int solisten(struct socket *so, int backlog);
 extern struct socket *sodropablereq(struct socket *head);
 extern int socket_lock(struct socket *so, int refcount);


@@ -784,6 +893,7 @@ extern int sogetoptlock(struct socket *so, struct sockopt *sopt, int);
 extern int sosetoptlock(struct socket *so, struct sockopt *sopt, int);
 extern int soshutdown(struct socket *so, int how);
 extern int soshutdownlock(struct socket *so, int how);
 extern int sosetoptlock(struct socket *so, struct sockopt *sopt, int);
 extern int soshutdown(struct socket *so, int how);
 extern int soshutdownlock(struct socket *so, int how);

+extern int soshutdownlock_final(struct socket *so, int how);

 extern void sotoxsocket(struct socket *so, struct xsocket *xso);
 extern void sotoxsocket64(struct socket *so, struct xsocket64 *xso);
 extern int sosendallatonce(struct socket *so);
 extern void sotoxsocket(struct socket *so, struct xsocket *xso);
 extern void sotoxsocket64(struct socket *so, struct xsocket64 *xso);
 extern int sosendallatonce(struct socket *so);


@@ -812,14 +922,23 @@ extern struct sockaddr_list *sockaddrlist_dup(const struct sockaddr_list *,
     int);
 
 /* Service class flags used for setting service class on a packet */
     int);
 
 /* Service class flags used for setting service class on a packet */

-#define PKT_SCF_IPV6           0x00000001      /* IPv6 packet */
-#define PKT_SCF_TCP_ACK                0x00000002      /* Pure TCP ACK */
+#define        PKT_SCF_IPV6            0x00000001      /* IPv6 packet */
+#define        PKT_SCF_TCP_ACK         0x00000002      /* Pure TCP ACK */
+#define        PKT_SCF_TCP_SYN         0x00000004      /* TCP SYN */
+
+/*
+ * Flags for connectx(2) user-protocol request routine.
+ */
+
+#define        CONNREQF_MPTCP  0x1     /* called internally by MPTCP */
+#define        CONNREQF_UIO    0x2     /* there's data */
+#define        CONNREQF_IDEM   0x4     /* data is idempotent */

 
 extern void set_packet_service_class(struct mbuf *, struct socket *,
     mbuf_svc_class_t, u_int32_t);
 extern void so_tc_update_stats(struct mbuf *, struct socket *,
     mbuf_svc_class_t);
 
 extern void set_packet_service_class(struct mbuf *, struct socket *,
     mbuf_svc_class_t, u_int32_t);
 extern void so_tc_update_stats(struct mbuf *, struct socket *,
     mbuf_svc_class_t);

-extern mbuf_svc_class_t mbuf_service_class_from_control(struct mbuf *);
+extern int so_tc_from_control(struct mbuf *, int *);

 extern mbuf_svc_class_t so_tc2msc(int);
 extern int so_svc2tc(mbuf_svc_class_t);
 
 extern mbuf_svc_class_t so_tc2msc(int);
 extern int so_svc2tc(mbuf_svc_class_t);
 


@@ -827,6 +946,7 @@ extern u_int8_t tcp_cansbgrow(struct sockbuf *sb);
 extern int tcp_get_msg_priority(struct mbuf *, uint32_t *);
 extern void set_tcp_stream_priority(struct socket *so);
 
 extern int tcp_get_msg_priority(struct mbuf *, uint32_t *);
 extern void set_tcp_stream_priority(struct socket *so);
 

+extern int so_set_net_service_type(struct socket *, int);

 extern int so_set_traffic_class(struct socket *, int);
 extern void so_set_default_traffic_class(struct socket *);
 extern int so_set_opportunistic(struct socket *, int);
 extern int so_set_traffic_class(struct socket *, int);
 extern void so_set_default_traffic_class(struct socket *);
 extern int so_set_opportunistic(struct socket *, int);


@@ -838,12 +958,15 @@ extern int so_set_effective_uuid(struct socket *, uuid_t, struct proc *);
 extern int so_set_restrictions(struct socket *, uint32_t);
 extern uint32_t so_get_restrictions(struct socket *);
 extern void socket_tclass_init(void);
 extern int so_set_restrictions(struct socket *, uint32_t);
 extern uint32_t so_get_restrictions(struct socket *);
 extern void socket_tclass_init(void);

+#if (DEVELOPMENT || DEBUG)

 extern int so_set_tcdbg(struct socket *, struct so_tcdbg *);
 extern int sogetopt_tcdbg(struct socket *, struct sockopt *);
 extern int so_set_tcdbg(struct socket *, struct so_tcdbg *);
 extern int sogetopt_tcdbg(struct socket *, struct sockopt *);

-extern void so_set_lro(struct socket*, int);
+#endif /* (DEVELOPMENT || DEBUG) */
+extern void so_set_lro(struct socket *, int);

 
 extern int so_isdstlocal(struct socket *);
 extern void so_recv_data_stat(struct socket *, struct mbuf *, size_t);
 
 extern int so_isdstlocal(struct socket *);
 extern void so_recv_data_stat(struct socket *, struct mbuf *, size_t);

+extern void so_inc_recv_data_stat(struct socket *, size_t, size_t, uint32_t);

 extern int so_wait_for_if_feedback(struct socket *);
 extern int msgq_sbspace(struct socket *so, struct mbuf *control);
 extern int soopt_getm(struct sockopt *sopt, struct mbuf **mp);
 extern int so_wait_for_if_feedback(struct socket *);
 extern int msgq_sbspace(struct socket *so, struct mbuf *control);
 extern int soopt_getm(struct sockopt *sopt, struct mbuf **mp);


@@ -851,13 +974,35 @@ extern int soopt_mcopyin(struct sockopt *sopt, struct mbuf *m);
 extern int soopt_mcopyout(struct sockopt *sopt, struct mbuf *m);
 extern boolean_t so_cache_timer(void);
 
 extern int soopt_mcopyout(struct sockopt *sopt, struct mbuf *m);
 extern boolean_t so_cache_timer(void);
 

-extern void mptcp_preproc_sbdrop(struct mbuf *, unsigned int);
+extern void mptcp_preproc_sbdrop(struct socket *, struct mbuf *, unsigned int);

 extern void mptcp_postproc_sbdrop(struct mbuf *, u_int64_t, u_int32_t,
     u_int32_t);
 extern void mptcp_postproc_sbdrop(struct mbuf *, u_int64_t, u_int32_t,
     u_int32_t);

-extern void mptcp_adj_rmap(struct socket *, struct mbuf *);
+extern int mptcp_adj_rmap(struct socket *, struct mbuf *);

 
 extern void netpolicy_post_msg(uint32_t, struct netpolicy_event_data *,
     uint32_t);
 
 extern void netpolicy_post_msg(uint32_t, struct netpolicy_event_data *,
     uint32_t);

+extern void socket_post_kev_msg(uint32_t, struct kev_socket_event_data *,
+    uint32_t);
+extern void socket_post_kev_msg_closed(struct socket *);
+/*
+ * Socket operation routines.
+ * These routines are called by the routines in
+ * sys_socket.c or from a system process, and
+ * implement the semantics of socket operations by
+ * switching out to the protocol specific routines.
+ */
+extern void postevent(struct socket *, struct sockbuf *, int);
+extern void evsofree(struct socket *);
+
+extern int tcp_notsent_lowat_check(struct socket *so);
+
+extern user_ssize_t uio_array_resid(struct uio **, u_int);
+extern user_ssize_t recv_msg_array_resid(struct recv_msg_elem *, u_int);
+
+void sotoxsocket_n(struct socket *, struct xsocket_n *);
+void sbtoxsockbuf_n(struct sockbuf *, struct xsockbuf_n *);
+void sbtoxsockstat_n(struct socket *, struct xsockstat_n *);
+

 __END_DECLS
 #endif /* BSD_KERNEL_PRIVATE */
 #endif /* KERNEL_PRIVATE */
 __END_DECLS
 #endif /* BSD_KERNEL_PRIVATE */
 #endif /* KERNEL_PRIVATE */