1/*
2 * Copyright (c) 2000-2017 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
29/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
30/*
31 * Copyright (c) 1982, 1986, 1990, 1993
32 * The Regents of the University of California. All rights reserved.
33 *
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted provided that the following conditions
36 * are met:
37 * 1. Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in the
41 * documentation and/or other materials provided with the distribution.
42 * 3. All advertising materials mentioning features or use of this software
43 * must display the following acknowledgement:
44 * This product includes software developed by the University of
45 * California, Berkeley and its contributors.
46 * 4. Neither the name of the University nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60 * SUCH DAMAGE.
61 *
62 * @(#)socketvar.h 8.3 (Berkeley) 2/19/95
63 * $FreeBSD: src/sys/sys/socketvar.h,v 1.46.2.6 2001/08/31 13:45:49 jlemon Exp $
64 */
65/*
66 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
67 * support for mandatory and extensible security protections. This notice
68 * is included in support of clause 2.2 (b) of the Apple Public License,
69 * Version 2.0.
70 */
71
72#ifndef _SYS_SOCKETVAR_H_
73#define _SYS_SOCKETVAR_H_
74
75#include <sys/appleapiopts.h>
76#include <sys/cdefs.h>
77#include <sys/types.h> /* u_quad_t */
78#ifdef KERNEL_PRIVATE
79#include <sys/queue.h> /* for TAILQ macros */
80#include <sys/select.h> /* for struct selinfo */
81#include <net/kext_net.h>
82#include <sys/ev.h>
83#include <uuid/uuid.h>
84#ifdef BSD_KERNEL_PRIVATE
85#include <sys/eventhandler.h>
86#endif /* BSD_KERNEL_PRIVATE */
87#endif /* KERNEL_PRIVATE */
88
89typedef u_quad_t so_gen_t;
90
91#ifdef KERNEL_PRIVATE
92struct mbuf;
93struct socket_filter_entry;
94struct protosw;
95struct sockif;
96struct sockutil;
97
98/* strings for sleep message: */
99extern char netio[], netcon[], netcls[];
100#define SOCKET_CACHE_ON
101#define SO_CACHE_FLUSH_INTERVAL 1 /* Seconds */
102#define SO_CACHE_TIME_LIMIT (120/SO_CACHE_FLUSH_INTERVAL) /* Seconds */
103#define SO_CACHE_MAX_FREE_BATCH 50
104#define MAX_CACHED_SOCKETS 512
105#define TEMPDEBUG 0
106#endif /* KERNEL_PRIVATE */
107
108#ifdef PRIVATE
109#define SO_TC_STATS_MAX 4
110
111struct data_stats {
112 u_int64_t rxpackets;
113 u_int64_t rxbytes;
114 u_int64_t txpackets;
115 u_int64_t txbytes;
116};
117
118#define MSG_PRI_0 0 /* TCP message priority, lowest */
119#define MSG_PRI_1 1
120#define MSG_PRI_2 2
121#define MSG_PRI_3 3 /* TCP message priority, highest */
122#define MSG_PRI_MAX MSG_PRI_3
123#define MSG_PRI_MIN MSG_PRI_0
124#define MSG_PRI_COUNT 4
125#define MSG_PRI_DEFAULT MSG_PRI_1
126#endif /* PRIVATE */
127
128#ifdef KERNEL_PRIVATE
129/* State for TCP message send or receive */
130struct msg_priq {
131 struct mbuf *msgq_head; /* first mbuf in the queue */
132 struct mbuf *msgq_tail; /* last mbuf in the queue */
133 struct mbuf *msgq_lastmsg; /* last message in the queue */
134 u_int32_t msgq_flags; /* flags per priority queue */
135#define MSGQ_MSG_NOTDONE 0x1 /* set when EOR of a msg is not seen */
136 u_int32_t msgq_bytes; /* data bytes in this queue */
137};
138
139struct msg_state {
140 struct msg_priq msg_priq[MSG_PRI_COUNT]; /* priority queues */
141 u_int32_t msg_serial_bytes; /* bytes moved to serial queue */
142 u_int32_t msg_uno_bytes; /* out-of-order chars in rcv buffer */
143};
144
145/* mbuf flag used to indicate out of order data received */
146#define M_UNORDERED_DATA M_PROTO1
147
148/*
149 * Kernel structure per socket.
150 * Contains send and receive buffer queues,
151 * handle on protocol and pointer to protocol
152 * private data and error information.
153 */
154struct socket {
155 int so_zone; /* zone we were allocated from */
156 short so_type; /* generic type, see socket.h */
157 u_short so_error; /* error affecting connection */
158 u_int32_t so_options; /* from socket call, see socket.h */
159 short so_linger; /* time to linger while closing */
160 short so_state; /* internal state flags SS_*, below */
161 void *so_pcb; /* protocol control block */
162 struct protosw *so_proto; /* protocol handle */
163 /*
164 * Variables for connection queueing.
165 * Socket where accepts occur is so_head in all subsidiary sockets.
166 * If so_head is 0, socket is not related to an accept.
167 * For head socket so_incomp queues partially completed connections,
168 * while so_comp is a queue of connections ready to be accepted.
169 * If a connection is aborted and it has so_head set, then
170 * it has to be pulled out of either so_incomp or so_comp.
171 * We allow connections to queue up based on current queue lengths
172 * and limit on number of queued connections for this socket.
173 */
174 struct socket *so_head; /* back pointer to accept socket */
175 TAILQ_HEAD(, socket) so_incomp; /* q of partially unaccepted conns */
176 TAILQ_HEAD(, socket) so_comp; /* q of complete unaccepted conns */
177 TAILQ_ENTRY(socket) so_list; /* list of unaccepted connections */
178 short so_qlen; /* number of unaccepted connections */
179 short so_incqlen; /* number of unaccepted incomplete
180 connections */
181 short so_qlimit; /* max number queued connections */
182 short so_timeo; /* connection timeout */
183 pid_t so_pgid; /* pgid for signals */
184 u_int32_t so_oobmark; /* chars to oob mark */
185 /*
186 * Variables for socket buffering.
187 */
188 struct sockbuf {
189 u_int32_t sb_cc; /* actual chars in buffer */
190 u_int32_t sb_hiwat; /* max actual char count */
191 u_int32_t sb_mbcnt; /* chars of mbufs used */
192 u_int32_t sb_mbmax; /* max chars of mbufs to use */
193 u_int32_t sb_ctl; /* non-data chars in buffer */
194 u_int32_t sb_lowat; /* low water mark */
195 struct mbuf *sb_mb; /* the mbuf chain */
196 struct mbuf *sb_mbtail; /* the last mbuf in the chain */
197 struct mbuf *sb_lastrecord; /* first mbuf of last record */
198 struct socket *sb_so; /* socket back ptr for kexts */
199 struct selinfo sb_sel; /* process selecting rd/wr */
200 struct timeval sb_timeo; /* timeout for read/write */
201 u_int32_t sb_flags; /* flags, see below */
202 u_int32_t sb_idealsize; /* Ideal size for the sb based
203 on bandwidth and delay */
204 void (*sb_upcall)(struct socket *, void *arg, int waitf);
205 void *sb_upcallarg; /* Arg for above */
206 u_int32_t sb_wantlock; /* # of SB_LOCK waiters */
207 u_int32_t sb_waiters; /* # of data/space waiters */
208 thread_t sb_cfil_thread; /* content filter thread */
209 u_int32_t sb_cfil_refs; /* # of nested calls */
210 u_int32_t sb_preconn_hiwat; /* preconnect hiwat mark */
211 } so_rcv, so_snd;
212#define SB_MAX (8192*1024) /* default for max chars in sockbuf */
213#define LOW_SB_MAX (2*9*1024) /* lower limit on max socket buffer
214 size, 2 max datagrams */
215#define SB_LOCK 0x1 /* lock on data queue */
216#define SB_NOINTR 0x2 /* operations not interruptible */
217#define SB_RECV 0x4 /* this is rcv sb */
218#define SB_SEL 0x8 /* someone is selecting */
219#define SB_ASYNC 0x10 /* ASYNC I/O, need signals */
220#define SB_UPCALL 0x20 /* someone wants an upcall */
221#define SB_KNOTE 0x40 /* kernel note attached */
222#define SB_DROP 0x80 /* does not accept any more data */
223#define SB_UNIX 0x100 /* UNIX domain socket buffer */
224#define SB_USRSIZE 0x200 /* user specified sbreserve */
225#define SB_AUTOSIZE 0x400 /* automatically size socket buffer */
226#define SB_TRIM 0x800 /* Trim the socket buffer */
227#define SB_NOCOMPRESS 0x1000 /* do not compress socket buffer */
228#define SB_SNDBYTE_CNT 0x2000 /* keep track of snd bytes per interface */
229#define SB_UPCALL_LOCK 0x4000 /* Keep socket locked when doing the upcall */
230 caddr_t so_tpcb; /* Misc. protocol control block, used
231 by some kexts */
232
233 void (*so_event)(struct socket *, void *, u_int32_t);
234 void *so_eventarg; /* Arg for above */
235 kauth_cred_t so_cred; /* cred of who opened the socket */
236 /* NB: generation count must not be first; easiest to make it last. */
237 so_gen_t so_gencnt; /* generation count */
238 TAILQ_HEAD(, eventqelt) so_evlist;
239 STAILQ_ENTRY(socket) so_cache_ent; /* socache entry */
240 caddr_t so_saved_pcb; /* Saved pcb when cacheing */
241 u_int32_t cache_timestamp; /* time socket was cached */
242
243 pid_t last_pid; /* pid of most recent accessor */
244 u_int64_t last_upid; /* upid of most recent accessor */
245
246 struct mbuf *so_temp; /* Holding area for outbound frags */
247 /* Plug-in support - make the socket interface overridable */
248 struct mbuf *so_tail;
249 struct socket_filter_entry *so_filt; /* NKE hook */
250 u_int32_t so_flags; /* Flags */
251#define SOF_NOSIGPIPE 0x00000001
252#define SOF_NOADDRAVAIL 0x00000002 /* EADDRNOTAVAIL if src addr is gone */
253#define SOF_PCBCLEARING 0x00000004 /* pru_disconnect done; don't
254 call pru_detach */
255#define SOF_DEFUNCT 0x00000008 /* socket marked as inactive */
256#define SOF_CLOSEWAIT 0x00000010 /* blocked in close awaiting some events */
257#define SOF_REUSESHAREUID 0x00000040 /* Allows SO_REUSEADDR/SO_REUSEPORT
258 for multiple so_uid */
259#define SOF_MULTIPAGES 0x00000080 /* jumbo clusters may be used for sosend */
260#define SOF_ABORTED 0x00000100 /* soabort was already called once */
261#define SOF_OVERFLOW 0x00000200 /* socket was dropped as overflow of
262 listen q */
263#define SOF_NOTIFYCONFLICT 0x00000400 /* notify that a bind was done on a
264 port already in use */
265#define SOF_UPCALLCLOSEWAIT 0x00000800 /* block close until upcall returns */
266#define SOF_BINDRANDOMPORT 0x00001000 /* Randomized port number for bind */
267#define SOF_NPX_SETOPTSHUT 0x00002000 /* Non POSIX extension to allow
268 setsockopt(2) after shut down */
269#define SOF_RECV_TRAFFIC_CLASS 0x00004000 /* Receive TC as ancillary data */
270#define SOF_NODEFUNCT 0x00008000 /* socket cannot be defunct'd */
271#define SOF_PRIVILEGED_TRAFFIC_CLASS 0x00010000 /* traffic class is privileged */
272#define SOF_SUSPENDED 0x00020000 /* i/f output queue is suspended */
273#define SOF_INCOMP_INPROGRESS 0x00040000 /* incomp socket is being processed */
274#define SOF_NOTSENT_LOWAT 0x00080000 /* A different lowat on not sent
275 data has been set */
276#define SOF_KNOTE 0x00100000 /* socket is on the EV_SOCK klist */
277#define SOF_USELRO 0x00200000 /* TCP must use LRO on these sockets */
278#define SOF_ENABLE_MSGS 0x00400000 /* TCP must enable message delivery */
279#define SOF_FLOW_DIVERT 0x00800000 /* Flow Divert is enabled */
280#define SOF_MP_SUBFLOW 0x01000000 /* is a multipath subflow socket */
281#define SOF_MP_SEC_SUBFLOW 0x04000000 /* Set up secondary flow */
282#define SOF_MP_TRYFAILOVER 0x08000000 /* Failing subflow */
283#define SOF_DELEGATED 0x10000000 /* on behalf of another process */
284#define SOF_CONTENT_FILTER 0x20000000 /* Content filter enabled */
285
286 uint32_t so_upcallusecount; /* number of upcalls in progress */
287 int so_usecount; /* refcounting of socket use */;
288 int so_retaincnt;
289 u_int32_t so_filteruse; /* usecount for the socket filters */
290 u_int16_t so_traffic_class;
291 int8_t so_netsvctype;
292 u_int8_t so_restrictions;
293 thread_t so_send_filt_thread;
294
295 /* for debug pruposes */
296#define SO_LCKDBG_MAX 4 /* number of debug locking Link Registers recorded */
297 void *lock_lr[SO_LCKDBG_MAX]; /* locking calling history */
298 void *unlock_lr[SO_LCKDBG_MAX]; /* unlocking caller history */
299 u_int8_t next_lock_lr;
300 u_int8_t next_unlock_lr;
301
302 u_int16_t so_pktheadroom; /* headroom before packet payload */
303
304 u_int32_t so_ifdenied_notifies; /* # of notifications generated */
305
306 struct label *so_label; /* MAC label for socket */
307 struct label *so_peerlabel; /* cached MAC label for socket peer */
308 thread_t so_background_thread; /* thread that marked
309 this socket background */
310 struct data_stats so_tc_stats[SO_TC_STATS_MAX];
311 struct klist so_klist; /* klist for EV_SOCK events */
312
313 struct msg_state *so_msg_state; /* unordered snd/rcv state */
314 struct flow_divert_pcb *so_fd_pcb; /* Flow Divert control block */
315
316#if CONTENT_FILTER
317 struct cfil_info *so_cfil;
318 struct cfil_db *so_cfil_db;
319 u_int32_t so_state_change_cnt; /* incr for each connect, disconnect */
320#endif
321
322 u_int32_t so_eventmask; /* event mask */
323
324 pid_t e_pid; /* pid of the effective owner */
325 u_int64_t e_upid; /* upid of the effective owner */
326
327 uuid_t last_uuid; /* uuid of most recent accessor */
328 uuid_t e_uuid; /* uuid of effective owner */
329 uuid_t so_vuuid; /* UUID of the Voucher originator */
330
331 int32_t so_policy_gencnt; /* UUID policy gencnt */
332
333 u_int32_t so_flags1;
334#define SOF1_POST_FALLBACK_SYNC 0x00000001 /* fallback to TCP */
335#define SOF1_AWDL_PRIVILEGED 0x00000002 /* unused */
336#define SOF1_IF_2KCL 0x00000004 /* interface prefers 2 KB clusters */
337#define SOF1_DEFUNCTINPROG 0x00000008
338#define SOF1_DATA_IDEMPOTENT 0x00000010 /* idempotent data for TFO */
339#define SOF1_PRECONNECT_DATA 0x00000020 /* request for preconnect data */
340#define SOF1_EXTEND_BK_IDLE_WANTED 0x00000040 /* option set */
341#define SOF1_EXTEND_BK_IDLE_INPROG 0x00000080 /* socket */
342#define SOF1_CACHED_IN_SOCK_LAYER 0x00000100 /* bundled with inpcb and
343 tcpcb */
344#define SOF1_TFO_REWIND 0x00000200 /* rewind mptcp meta data */
345#define SOF1_CELLFALLBACK 0x00000400 /* Initiated by cell fallback */
346#define SOF1_QOSMARKING_ALLOWED 0x00000800 /* policy allows DSCP map */
347#define SOF1_TC_NET_SERV_TYPE 0x00001000 /* traffic class set by SO_NETWORK_SERVICE_TYPE */
348#define SOF1_TRAFFIC_MGT_SO_BACKGROUND 0x00002000 /* background socket */
349#define SOF1_TRAFFIC_MGT_TCP_RECVBG 0x00004000 /* Only TCP sockets, receiver throttling */
350#define SOF1_QOSMARKING_POLICY_OVERRIDE 0x00008000 /* Opt-out of QoS marking NECP policy */
351#define SOF1_DATA_AUTHENTICATED 0x00010000 /* idempotent data is authenticated */
352#define SOF1_ACCEPT_LIST_HELD 0x00020000 /* Another thread is accessing one of the accept lists */
353#define SOF1_CONTENT_FILTER_SKIP 0x00040000 /* Content filter should be skipped, socket is blessed */
354#define SOF1_HAS_NECP_CLIENT_UUID 0x00080000 /* NECP client UUID option set */
355#define SOF1_IN_KERNEL_SOCKET 0x00100000 /* Socket created in kernel via KPI */
356#define SOF1_CONNECT_COUNTED 0x00200000 /* connect() call was counted */
357#define SOF1_DNS_COUNTED 0x00400000 /* socket counted to send DNS queries */
358
359 u_int64_t so_extended_bk_start;
360};
361
362/* Control message accessor in mbufs */
363
364#define _MIN_NXT_CMSGHDR_PTR(cmsg) \
365 ((char *)(cmsg) + \
366 __DARWIN_ALIGN32((__uint32_t)(cmsg)->cmsg_len) + \
367 __DARWIN_ALIGN32(sizeof(struct cmsghdr)))
368
369#define M_FIRST_CMSGHDR(m) \
370 ((char *)(m) != (char *)0L && \
371 (size_t)(m)->m_len >= sizeof (struct cmsghdr) && \
372 (socklen_t)(m)->m_len >= \
373 __DARWIN_ALIGN32(((struct cmsghdr *)(void *)(m)->m_data)->cmsg_len) ? \
374 (struct cmsghdr *)(void *)(m)->m_data : (struct cmsghdr *)0L)
375
376#define M_NXT_CMSGHDR(m, cmsg) \
377 ((char *)(cmsg) == (char *)0L ? M_FIRST_CMSGHDR(m) : \
378 _MIN_NXT_CMSGHDR_PTR(cmsg) > ((char *)(m)->m_data) + (m)->m_len || \
379 _MIN_NXT_CMSGHDR_PTR(cmsg) < (char *)(m)->m_data ? \
380 (struct cmsghdr *)0L /* NULL */ : \
381 (struct cmsghdr *)(void *)((unsigned char *)(cmsg) + \
382 __DARWIN_ALIGN32((__uint32_t)(cmsg)->cmsg_len)))
383
384/*
385 * Socket state bits.
386 */
387#define SS_NOFDREF 0x0001 /* no file table ref any more */
388#define SS_ISCONNECTED 0x0002 /* socket connected to a peer */
389#define SS_ISCONNECTING 0x0004 /* in process of connecting to peer */
390#define SS_ISDISCONNECTING 0x0008 /* in process of disconnecting */
391#define SS_CANTSENDMORE 0x0010 /* can't send more data to peer */
392#define SS_CANTRCVMORE 0x0020 /* can't receive more data from peer */
393#define SS_RCVATMARK 0x0040 /* at mark on input */
394
395#define SS_PRIV 0x0080 /* privileged for broadcast, raw... */
396#define SS_NBIO 0x0100 /* non-blocking ops */
397#define SS_ASYNC 0x0200 /* async i/o notify */
398#define SS_ISCONFIRMING 0x0400 /* deciding to accept connection req */
399#define SS_INCOMP 0x0800 /* Unaccepted, incomplete connection */
400#define SS_COMP 0x1000 /* unaccepted, complete connection */
401#define SS_ISDISCONNECTED 0x2000 /* socket disconnected from peer */
402#define SS_DRAINING 0x4000 /* close waiting for blocked system
403 calls to drain */
404#define SS_DEFUNCT 0x8000 /* has been fully defunct'd */
405#endif /* KERNEL_PRIVATE */
406
407#if defined(__LP64__)
408#define _XSOCKET_PTR(x) u_int32_t
409#else
410#define _XSOCKET_PTR(x) x
411#endif
412
413#ifdef PRIVATE
414/* Flags returned in data field for EVFILT_SOCK events. */
415#define SOCKEV_CONNECTED 0x00000001 /* connected */
416#define SOCKEV_DISCONNECTED 0x00000002 /* disconnected */
417#endif /* PRIVATE */
418
419#pragma pack(4)
420
421struct xsockbuf {
422 u_int32_t sb_cc;
423 u_int32_t sb_hiwat;
424 u_int32_t sb_mbcnt;
425 u_int32_t sb_mbmax;
426 int32_t sb_lowat;
427 short sb_flags;
428 short sb_timeo;
429};
430
431/*
432 * Externalized form of struct socket used by the sysctl(3) interface.
433 */
434struct xsocket {
435 u_int32_t xso_len; /* length of this structure */
436 _XSOCKET_PTR(struct socket *) xso_so; /* makes a convenient handle */
437 short so_type;
438 short so_options;
439 short so_linger;
440 short so_state;
441 _XSOCKET_PTR(caddr_t) so_pcb; /* another convenient handle */
442 int xso_protocol;
443 int xso_family;
444 short so_qlen;
445 short so_incqlen;
446 short so_qlimit;
447 short so_timeo;
448 u_short so_error;
449 pid_t so_pgid;
450 u_int32_t so_oobmark;
451 struct xsockbuf so_rcv;
452 struct xsockbuf so_snd;
453 uid_t so_uid; /* XXX */
454};
455
456#if !CONFIG_EMBEDDED
457struct xsocket64 {
458 u_int32_t xso_len; /* length of this structure */
459 u_int64_t xso_so; /* makes a convenient handle */
460 short so_type;
461 short so_options;
462 short so_linger;
463 short so_state;
464 u_int64_t so_pcb; /* another convenient handle */
465 int xso_protocol;
466 int xso_family;
467 short so_qlen;
468 short so_incqlen;
469 short so_qlimit;
470 short so_timeo;
471 u_short so_error;
472 pid_t so_pgid;
473 u_int32_t so_oobmark;
474 struct xsockbuf so_rcv;
475 struct xsockbuf so_snd;
476 uid_t so_uid; /* XXX */
477};
478#endif /* !CONFIG_EMBEDDED */
479
480#ifdef PRIVATE
481#define XSO_SOCKET 0x001
482#define XSO_RCVBUF 0x002
483#define XSO_SNDBUF 0x004
484#define XSO_STATS 0x008
485#define XSO_INPCB 0x010
486#define XSO_TCPCB 0x020
487#define XSO_KCREG 0x040
488#define XSO_KCB 0x080
489#define XSO_EVT 0x100
490
491struct xsocket_n {
492 u_int32_t xso_len; /* length of this structure */
493 u_int32_t xso_kind; /* XSO_SOCKET */
494 u_int64_t xso_so; /* makes a convenient handle */
495 short so_type;
496 u_int32_t so_options;
497 short so_linger;
498 short so_state;
499 u_int64_t so_pcb; /* another convenient handle */
500 int xso_protocol;
501 int xso_family;
502 short so_qlen;
503 short so_incqlen;
504 short so_qlimit;
505 short so_timeo;
506 u_short so_error;
507 pid_t so_pgid;
508 u_int32_t so_oobmark;
509 uid_t so_uid; /* XXX */
510 pid_t so_last_pid;
511 pid_t so_e_pid;
512};
513
514struct xsockbuf_n {
515 u_int32_t xsb_len; /* length of this structure */
516 u_int32_t xsb_kind; /* XSO_RCVBUF or XSO_SNDBUF */
517 u_int32_t sb_cc;
518 u_int32_t sb_hiwat;
519 u_int32_t sb_mbcnt;
520 u_int32_t sb_mbmax;
521 int32_t sb_lowat;
522 short sb_flags;
523 short sb_timeo;
524};
525
526struct xsockstat_n {
527 u_int32_t xst_len; /* length of this structure */
528 u_int32_t xst_kind; /* XSO_STATS */
529 struct data_stats xst_tc_stats[SO_TC_STATS_MAX];
530};
531
532/*
533 * Global socket statistics
534 */
535struct soextbkidlestat {
536 u_int32_t so_xbkidle_maxperproc;
537 u_int32_t so_xbkidle_time;
538 u_int32_t so_xbkidle_rcvhiwat;
539 int32_t so_xbkidle_notsupp;
540 int32_t so_xbkidle_toomany;
541 int32_t so_xbkidle_wantok;
542 int32_t so_xbkidle_active;
543 int32_t so_xbkidle_nocell;
544 int32_t so_xbkidle_notime;
545 int32_t so_xbkidle_forced;
546 int32_t so_xbkidle_resumed;
547 int32_t so_xbkidle_expired;
548 int32_t so_xbkidle_resched;
549 int32_t so_xbkidle_nodlgtd;
550 int32_t so_xbkidle_drained;
551};
552#endif /* PRIVATE */
553
554#pragma pack()
555
556#ifdef KERNEL_PRIVATE
557#include <sys/kpi_mbuf.h>
558
559/*
560 * Argument structure for sosetopt et seq. This is in the KERNEL
561 * section because it will never be visible to user code.
562 */
563enum sopt_dir { SOPT_GET, SOPT_SET };
564struct sockopt {
565 enum sopt_dir sopt_dir; /* is this a get or a set? */
566 int sopt_level; /* second arg of [gs]etsockopt */
567 int sopt_name; /* third arg of [gs]etsockopt */
568 user_addr_t sopt_val; /* fourth arg of [gs]etsockopt */
569 size_t sopt_valsize; /* (almost) fifth arg of [gs]etsockopt */
570 struct proc *sopt_p; /* calling process or null if kernel */
571};
572
573#ifdef MALLOC_DECLARE
574MALLOC_DECLARE(M_PCB);
575MALLOC_DECLARE(M_SONAME);
576#endif /* MALLOC_DECLARE */
577
578#ifdef BSD_KERNEL_PRIVATE
579/*
580 * Socket extension mechanism: control block hooks:
581 * This is the "head" of any control block for an extenstion
582 * Note: we separate intercept function dispatch vectors from
583 * the NFDescriptor to permit selective replacement during
584 * operation, e.g., to disable some functions.
585 */
586struct kextcb {
587 struct kextcb *e_next; /* Next kext control block */
588 void *e_fcb; /* Real filter control block */
589 struct NFDescriptor *e_nfd; /* NKE Descriptor */
590 /* Plug-in support - intercept functions */
591 struct sockif *e_soif; /* Socket functions */
592 struct sockutil *e_sout; /* Sockbuf utility functions */
593};
594#define EXT_NULL 0x0 /* STATE: Not in use */
595
596/* Hints for socket event processing */
597#define SO_FILT_HINT_LOCKED 0x00000001 /* socket is already locked */
598#define SO_FILT_HINT_CONNRESET 0x00000002 /* Reset is received */
599#define SO_FILT_HINT_CANTRCVMORE 0x00000004 /* No more data to read */
600#define SO_FILT_HINT_CANTSENDMORE 0x00000008 /* Can't write more data */
601#define SO_FILT_HINT_TIMEOUT 0x00000010 /* timeout */
602#define SO_FILT_HINT_NOSRCADDR 0x00000020 /* No src address available */
603#define SO_FILT_HINT_IFDENIED 0x00000040 /* interface denied access */
604#define SO_FILT_HINT_SUSPEND 0x00000080 /* output queue suspended */
605#define SO_FILT_HINT_RESUME 0x00000100 /* output queue resumed */
606#define SO_FILT_HINT_KEEPALIVE 0x00000200 /* TCP Keepalive received */
607#define SO_FILT_HINT_ADAPTIVE_WTIMO 0x00000400 /* TCP adaptive write timeout */
608#define SO_FILT_HINT_ADAPTIVE_RTIMO 0x00000800 /* TCP adaptive read timeout */
609#define SO_FILT_HINT_CONNECTED 0x00001000 /* socket is connected */
610#define SO_FILT_HINT_DISCONNECTED 0x00002000 /* socket is disconnected */
611#define SO_FILT_HINT_CONNINFO_UPDATED 0x00004000 /* updated conninfo avail. */
612#define SO_FILT_HINT_MPFAILOVER 0x00008000 /* multipath failover */
613#define SO_FILT_HINT_MPSTATUS 0x00010000 /* multipath status */
614#define SO_FILT_HINT_MUSTRST 0x00020000 /* must send RST and close */
615#define SO_FILT_HINT_MPCANTRCVMORE 0x00040000 /* MPTCP DFIN Received */
616#define SO_FILT_HINT_NOTIFY_ACK 0x00080000 /* Notify Acknowledgement */
617
618#define SO_FILT_HINT_BITS \
619 "\020\1LOCKED\2CONNRESET\3CANTRCVMORE\4CANTSENDMORE\5TIMEOUT" \
620 "\6NOSRCADDR\7IFDENIED\10SUSPEND\11RESUME\12KEEPALIVE\13AWTIMO" \
621 "\14ARTIMO\15CONNECTED\16DISCONNECTED\17CONNINFO_UPDATED" \
622 "\20MPFAILOVER\21MPSTATUS\22MUSTRST\23MPCANTRCVMORE\24NOTIFYACK"
623
624/* Mask for hints that have corresponding kqueue events */
625#define SO_FILT_HINT_EV \
626 (SO_FILT_HINT_CONNRESET | SO_FILT_HINT_CANTRCVMORE | \
627 SO_FILT_HINT_CANTSENDMORE | SO_FILT_HINT_TIMEOUT | \
628 SO_FILT_HINT_NOSRCADDR | SO_FILT_HINT_IFDENIED | \
629 SO_FILT_HINT_SUSPEND | SO_FILT_HINT_RESUME | \
630 SO_FILT_HINT_KEEPALIVE | SO_FILT_HINT_ADAPTIVE_WTIMO | \
631 SO_FILT_HINT_ADAPTIVE_RTIMO | SO_FILT_HINT_CONNECTED | \
632 SO_FILT_HINT_DISCONNECTED | SO_FILT_HINT_CONNINFO_UPDATED | \
633 SO_FILT_HINT_NOTIFY_ACK)
634
635#if SENDFILE
636struct sf_buf {
637 SLIST_ENTRY(sf_buf) free_list; /* list of free buffer slots */
638 int refcnt; /* reference count */
639 struct vm_page *m; /* currently mapped page */
640 vm_offset_t kva; /* va of mapping */
641};
642#endif /* SENDFILE */
643
644#define SBLASTRECORDCHK(sb, s) \
645 if (socket_debug) sblastrecordchk(sb, s);
646
647#define SBLASTMBUFCHK(sb, s) \
648 if (socket_debug) sblastmbufchk(sb, s);
649
650#define SB_EMPTY_FIXUP(sb) { \
651 if ((sb)->sb_mb == NULL) { \
652 (sb)->sb_mbtail = NULL; \
653 (sb)->sb_lastrecord = NULL; \
654 } \
655}
656
657#define SB_MB_CHECK(sb) do { \
658 if (((sb)->sb_mb != NULL && \
659 (sb)->sb_cc == 0) || \
660 ((sb)->sb_mb == NULL && (sb)->sb_cc > 0)) \
661 panic("corrupt so_rcv: sb_mb %p sb_cc %d\n", \
662 (sb)->sb_mb, (sb)->sb_cc); \
663} while (0)
664
665#define SODEFUNCTLOG(fmt, ...) do { \
666 if (sodefunctlog) \
667 printf(fmt, __VA_ARGS__); \
668} while (0)
669
670#define SOTHROTTLELOG(fmt, ...) do { \
671 if (sothrottlelog) \
672 printf(fmt, __VA_ARGS__); \
673} while (0)
674
675/*
676 * For debugging traffic class behaviors
677 */
678#define SOTCDB_RESERVED 0x01
679#define SOTCDB_NO_MTC 0x02 /* Do not set the mbuf traffic class */
680#define SOTCDB_NO_SENDTCPBG 0x04 /* Do not use background TCP CC algorithm for sender */
681#define SOTCDB_NO_LCLTST 0x08 /* Do not test for local destination for setting DSCP */
682#define SOTCDB_NO_DSCPTST 0x10 /* Overwritte any existing DSCP code */
683#define SOTCDB_NO_RECVTCPBG 0x20 /* Do not use throttling on receiver-side of TCP */
684#define SOTCDB_NO_PRIVILEGED 0x40 /* Do not set privileged traffic flag */
685
686#define SOCK_DOM(so) ((so)->so_proto->pr_domain->dom_family)
687#define SOCK_TYPE(so) ((so)->so_proto->pr_type)
688#define SOCK_PROTO(so) ((so)->so_proto->pr_protocol)
689
690#define SOCK_CHECK_DOM(so, dom) (SOCK_DOM(so) == (dom))
691#define SOCK_CHECK_TYPE(so, type) (SOCK_TYPE(so) == (type))
692#define SOCK_CHECK_PROTO(so, proto) (SOCK_PROTO(so) == (proto))
693
694/*
695 * Socket process information
696 */
697struct so_procinfo {
698 pid_t spi_pid;
699 pid_t spi_epid;
700 uuid_t spi_uuid;
701 uuid_t spi_euuid;
702 int spi_delegated;
703};
704
705extern u_int32_t sb_max;
706extern so_gen_t so_gencnt;
707extern int socket_debug;
708extern int sosendjcl;
709extern int sosendjcl_ignore_capab;
710extern int sodefunctlog;
711extern int sothrottlelog;
712extern int sorestrictrecv;
713extern int sorestrictsend;
714extern int somaxconn;
715extern uint32_t tcp_do_autosendbuf;
716extern uint32_t tcp_autosndbuf_max;
717extern uint32_t tcp_autosndbuf_inc;
718extern u_int32_t sotcdb;
719extern u_int32_t net_io_policy_log;
720extern u_int32_t net_io_policy_throttle_best_effort;
721#if CONFIG_PROC_UUID_POLICY
722extern u_int32_t net_io_policy_uuid;
723#endif /* CONFIG_PROC_UUID_POLICY */
724
725extern struct soextbkidlestat soextbkidlestat;
726
727struct net_qos_dscp_map {
728 u_int8_t sotc_to_dscp[SO_TC_MAX];
729 u_int8_t netsvctype_to_dscp[_NET_SERVICE_TYPE_COUNT];
730};
731
732#endif /* BSD_KERNEL_PRIVATE */
733
734struct mbuf;
735struct sockaddr;
736struct ucred;
737struct uio;
738
739#define SOCK_MSG_SA 0x01
740#define SOCK_MSG_CONTROL 0x02
741#define SOCK_MSG_DATA 0x04
742
743struct recv_msg_elem {
744 struct uio *uio;
745 struct sockaddr *psa;
746 struct mbuf *controlp;
747 int which;
748 int flags;
749};
750
751/*
752 * From uipc_socket and friends
753 */
754__BEGIN_DECLS
755/* Exported */
756extern int sbappendaddr(struct sockbuf *sb, struct sockaddr *asa,
757 struct mbuf *m0, struct mbuf *control, int *error_out);
758extern int sbappendchain(struct sockbuf *sb, struct mbuf *m, int space);
759extern int sbappendrecord(struct sockbuf *sb, struct mbuf *m0);
760extern void sbflush(struct sockbuf *sb);
761extern int sbspace(struct sockbuf *sb);
762extern int soabort(struct socket *so);
763extern void socantrcvmore(struct socket *so);
764extern void socantsendmore(struct socket *so);
765extern int sodisconnect(struct socket *so);
766extern void sofree(struct socket *so);
767extern void sofreelastref(struct socket *, int);
768extern void soisconnected(struct socket *so);
769extern boolean_t socanwrite(struct socket *so);
770extern void soisconnecting(struct socket *so);
771extern void soisdisconnected(struct socket *so);
772extern void soisdisconnecting(struct socket *so);
773extern struct socket *sonewconn(struct socket *head, int connstatus,
774 const struct sockaddr *from);
775extern int sopoll(struct socket *so, int events, struct ucred *cred, void *wql);
776extern int sooptcopyin(struct sockopt *sopt, void *data, size_t len,
777 size_t minlen);
778extern int sooptcopyout(struct sockopt *sopt, void *data, size_t len);
779extern int soopt_cred_check(struct socket *so, int priv, boolean_t allow_root);
780extern int soreceive(struct socket *so, struct sockaddr **paddr,
781 struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp);
782extern int soreserve(struct socket *so, u_int32_t sndcc, u_int32_t rcvcc);
783extern void soreserve_preconnect(struct socket *so, unsigned int pre_cc);
784extern void sorwakeup(struct socket *so);
785extern int sosend(struct socket *so, struct sockaddr *addr, struct uio *uio,
786 struct mbuf *top, struct mbuf *control, int flags);
787extern int sosend_reinject(struct socket *so, struct sockaddr *addr, struct mbuf *top,
788 struct mbuf *control, uint32_t sendflags);
789extern int sosend_list(struct socket *so, struct uio **uio, u_int uiocnt,
790 int flags);
791extern int soreceive_list(struct socket *so, struct recv_msg_elem *msgarray,
792 u_int msgcnt, int *flags);
793extern void sonullevent(struct socket *so, void *arg, uint32_t hint);
794extern struct mbuf *sbconcat_mbufs(struct sockbuf *sb, struct sockaddr *asa, struct mbuf *m0,
795 struct mbuf *control);
796
797
798__END_DECLS
799
800#ifdef BSD_KERNEL_PRIVATE
801struct file;
802struct filedesc;
803struct so_tcdbg;
804
805__BEGIN_DECLS
806/* Not exported */
807extern void socketinit(void);
808extern struct sockaddr *dup_sockaddr(struct sockaddr *sa, int canwait);
809extern int getsock(struct filedesc *fdp, int fd, struct file **fpp);
810extern int sockargs(struct mbuf **mp, user_addr_t data, int buflen, int type);
811extern void get_sockev_state(struct socket *, u_int32_t *);
812extern void so_update_last_owner_locked(struct socket *, struct proc *);
813extern void so_update_policy(struct socket *);
814extern void so_acquire_accept_list(struct socket *, struct socket *);
815extern void so_release_accept_list(struct socket *);
816
817extern int sbappend(struct sockbuf *sb, struct mbuf *m);
818extern int sbappendstream(struct sockbuf *sb, struct mbuf *m);
819extern int sbappendcontrol(struct sockbuf *sb, struct mbuf *m0,
820 struct mbuf *control, int *error_out);
821extern int sbappendmsgstream_rcv(struct sockbuf *sb, struct mbuf *m,
822 uint32_t seqnum, int flags);
823extern int sbappendstream_rcvdemux(struct socket *so, struct mbuf *m,
824 uint32_t seqnum, int flags);
825#if MPTCP
826extern int sbappendmptcpstream_rcv(struct sockbuf *sb, struct mbuf *m);
827#endif /* MPTCP */
828extern int sbappendmsg_snd(struct sockbuf *sb, struct mbuf *m);
829extern void sbpull_unordered_data(struct socket *, int32_t, int32_t);
830extern void sbcheck(struct sockbuf *sb);
831extern void sblastmbufchk(struct sockbuf *, const char *);
832extern void sblastrecordchk(struct sockbuf *, const char *);
833extern struct mbuf *sbcreatecontrol(caddr_t p, int size, int type, int level);
834extern struct mbuf **sbcreatecontrol_mbuf(caddr_t p, int size, int type,
835 int level, struct mbuf **m);
836extern void sbdrop(struct sockbuf *sb, int len);
837extern void sbdroprecord(struct sockbuf *sb);
838extern int sbinsertoob(struct sockbuf *sb, struct mbuf *m0);
839extern void sbrelease(struct sockbuf *sb);
840extern int sbreserve(struct sockbuf *sb, u_int32_t cc);
841extern void sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb);
842extern int sbwait(struct sockbuf *sb);
843extern void sbwakeup(struct sockbuf *sb);
844extern void sb_empty_assert(struct sockbuf *, const char *);
845extern int sb_notify(struct sockbuf *sb);
846extern void sballoc(struct sockbuf *sb, struct mbuf *m);
847extern void sbfree(struct sockbuf *sb, struct mbuf *m);
848extern void sbfree_chunk(struct sockbuf *sb, struct mbuf *m);
849
850/*
851 * Flags to sblock().
852 */
853#define SBL_WAIT 0x00000001 /* Wait if not immediately available. */
854#define SBL_NOINTR 0x00000002 /* Force non-interruptible sleep. */
855#define SBL_IGNDEFUNCT 0x00000004 /* Ignore defunct'd state */
856#define SBL_VALID (SBL_WAIT | SBL_NOINTR | SBL_IGNDEFUNCT)
857extern int sblock(struct sockbuf *sb, uint32_t flags);
858extern void sbunlock(struct sockbuf *sb, boolean_t keeplocked);
859
860extern int soaccept(struct socket *so, struct sockaddr **nam);
861extern int soacceptlock(struct socket *so, struct sockaddr **nam, int dolock);
862extern int soacceptfilter(struct socket *so, struct socket *head);
863extern struct socket *soalloc(int waitok, int dom, int type);
864extern int sobindlock(struct socket *so, struct sockaddr *nam, int dolock);
865extern int soclose(struct socket *so);
866extern int soclose_locked(struct socket *so);
867extern void soclose_wait_locked(struct socket *so);
868extern int soconnect(struct socket *so, struct sockaddr *nam);
869extern int soconnectlock(struct socket *so, struct sockaddr *nam, int dolock);
870extern int soconnect2(struct socket *so1, struct socket *so2);
871extern int soconnectxlocked(struct socket *so, struct sockaddr *src,
872 struct sockaddr *dst, struct proc *, uint32_t, sae_associd_t,
873 sae_connid_t *, uint32_t, void *, u_int32_t, uio_t, user_ssize_t *);
874extern int sodisconnectx(struct socket *so, sae_associd_t, sae_connid_t);
875extern int sodisconnectxlocked(struct socket *so, sae_associd_t, sae_connid_t);
876extern void soevupcall(struct socket *, u_int32_t);
877/* flags for socreate_internal */
878#define SOCF_ASYNC 0x1 /* non-blocking socket */
879extern int socreate_internal(int dom, struct socket **aso, int type, int proto,
880 struct proc *, uint32_t, struct proc *);
881extern int socreate(int dom, struct socket **aso, int type, int proto);
882extern int socreate_delegate(int dom, struct socket **aso, int type, int proto,
883 pid_t epid);
884extern void sodealloc(struct socket *so);
885extern int sodisconnectlocked(struct socket *so);
886extern void soreference(struct socket *so);
887extern void sodereference(struct socket *so);
888extern void somultipages(struct socket *, boolean_t);
889extern void soif2kcl(struct socket *, boolean_t);
890extern int sosetdefunct(struct proc *, struct socket *, int level, boolean_t);
891extern int sodefunct(struct proc *, struct socket *, int level);
892extern int soresume(struct proc *, struct socket *, int);
893extern void resume_proc_sockets(proc_t);
894extern int so_check_extended_bk_idle_time(struct socket *);
895extern void so_drain_extended_bk_idle(struct socket *);
896extern void sohasoutofband(struct socket *so);
897extern void sodisconnectwakeup(struct socket *so);
898extern int soisthrottled(struct socket *so);
899extern int soisprivilegedtraffic(struct socket *so);
900extern int soissrcbackground(struct socket *so);
901extern int soissrcrealtime(struct socket *so);
902extern int soissrcbesteffort(struct socket *so);
903extern void soclearfastopen(struct socket *so);
904extern int solisten(struct socket *so, int backlog);
905extern struct socket *sodropablereq(struct socket *head);
906extern void socket_lock(struct socket *so, int refcount);
907extern void socket_lock_assert_owned(struct socket *so);
908extern int socket_try_lock(struct socket *so);
909extern void socket_unlock(struct socket *so, int refcount);
910extern int sogetaddr_locked(struct socket *, struct sockaddr **, int);
911extern const char *solockhistory_nr(struct socket *);
912extern void soevent(struct socket *so, long hint);
913extern void sorflush(struct socket *so);
914extern void sowflush(struct socket *so);
915extern void sowakeup(struct socket *so, struct sockbuf *sb);
916extern int soioctl(struct socket *so, u_long cmd, caddr_t data, struct proc *p);
917extern int sogetoptlock(struct socket *so, struct sockopt *sopt, int);
918extern int sosetoptlock(struct socket *so, struct sockopt *sopt, int);
919extern int soshutdown(struct socket *so, int how);
920extern int soshutdownlock(struct socket *so, int how);
921extern int soshutdownlock_final(struct socket *so, int how);
922extern void sotoxsocket(struct socket *so, struct xsocket *xso);
923#if !CONFIG_EMBEDDED
924extern void sotoxsocket64(struct socket *so, struct xsocket64 *xso);
925#endif /* !CONFIG_EMBEDDED */
926extern int sosendallatonce(struct socket *so);
927extern int soreadable(struct socket *so);
928extern int sowriteable(struct socket *so);
929extern void sowwakeup(struct socket *so);
930extern int sosendcheck(struct socket *, struct sockaddr *, user_ssize_t,
931 int32_t, int32_t, int, int *, struct mbuf *);
932
933extern int soo_ioctl(struct fileproc *, u_long, caddr_t, vfs_context_t);
934extern int soo_stat(struct socket *, void *, int);
935extern int soo_select(struct fileproc *, int, void *, vfs_context_t);
936extern int soo_kqfilter(struct fileproc *, struct knote *,
937 struct kevent_internal_s *kev, vfs_context_t);
938
939/* Service class flags used for setting service class on a packet */
940#define PKT_SCF_IPV6 0x00000001 /* IPv6 packet */
941#define PKT_SCF_TCP_ACK 0x00000002 /* Pure TCP ACK */
942#define PKT_SCF_TCP_SYN 0x00000004 /* TCP SYN */
943
944/*
945 * Flags for connectx(2) user-protocol request routine.
946 */
947
948#define CONNREQF_MPTCP 0x1 /* called internally by MPTCP */
949#define CONNREQF_UIO 0x2 /* there's data */
950#define CONNREQF_IDEM 0x4 /* data is idempotent */
951
952extern void set_packet_service_class(struct mbuf *, struct socket *,
953 mbuf_svc_class_t, u_int32_t);
954extern void so_tc_update_stats(struct mbuf *, struct socket *,
955 mbuf_svc_class_t);
956extern int so_tc_from_control(struct mbuf *, int *);
957extern mbuf_svc_class_t so_tc2msc(int);
958extern int so_svc2tc(mbuf_svc_class_t);
959
960extern u_int8_t tcp_cansbgrow(struct sockbuf *sb);
961extern int tcp_get_msg_priority(struct mbuf *, uint32_t *);
962extern void set_tcp_stream_priority(struct socket *so);
963
964extern int so_set_net_service_type(struct socket *, int);
965extern int so_set_traffic_class(struct socket *, int);
966extern void so_set_default_traffic_class(struct socket *);
967extern int so_set_opportunistic(struct socket *, int);
968extern int so_get_opportunistic(struct socket *);
969extern int so_set_recv_anyif(struct socket *, int);
970extern int so_get_recv_anyif(struct socket *);
971extern int so_set_effective_pid(struct socket *, int, struct proc *);
972extern int so_set_effective_uuid(struct socket *, uuid_t, struct proc *);
973extern int so_set_restrictions(struct socket *, uint32_t);
974extern uint32_t so_get_restrictions(struct socket *);
975extern void socket_tclass_init(void);
976#if (DEVELOPMENT || DEBUG)
977extern int so_set_tcdbg(struct socket *, struct so_tcdbg *);
978extern int sogetopt_tcdbg(struct socket *, struct sockopt *);
979#endif /* (DEVELOPMENT || DEBUG) */
980extern void so_set_lro(struct socket *, int);
981
982extern int so_isdstlocal(struct socket *);
983extern void so_recv_data_stat(struct socket *, struct mbuf *, size_t);
984extern void so_inc_recv_data_stat(struct socket *, size_t, size_t, uint32_t);
985extern int so_wait_for_if_feedback(struct socket *);
986extern int msgq_sbspace(struct socket *so, struct mbuf *control);
987extern int soopt_getm(struct sockopt *sopt, struct mbuf **mp);
988extern int soopt_mcopyin(struct sockopt *sopt, struct mbuf *m);
989extern int soopt_mcopyout(struct sockopt *sopt, struct mbuf *m);
990extern boolean_t so_cache_timer(void);
991
992extern void mptcp_fallback_sbdrop(struct socket *so, struct mbuf *m, int len);
993extern void mptcp_preproc_sbdrop(struct socket *, struct mbuf *, unsigned int);
994extern void mptcp_postproc_sbdrop(struct mbuf *, u_int64_t, u_int32_t,
995 u_int32_t);
996extern int mptcp_adj_rmap(struct socket *so, struct mbuf *m, int off,
997 uint64_t dsn, uint32_t rseq, uint16_t dlen);
998
999extern void netpolicy_post_msg(uint32_t, struct netpolicy_event_data *,
1000 uint32_t);
1001extern void socket_post_kev_msg(uint32_t, struct kev_socket_event_data *,
1002 uint32_t);
1003extern void socket_post_kev_msg_closed(struct socket *);
1004/*
1005 * Socket operation routines.
1006 * These routines are called by the routines in
1007 * sys_socket.c or from a system process, and
1008 * implement the semantics of socket operations by
1009 * switching out to the protocol specific routines.
1010 */
1011extern void postevent(struct socket *, struct sockbuf *, int);
1012extern void evsofree(struct socket *);
1013
1014extern int tcp_notsent_lowat_check(struct socket *so);
1015
1016extern user_ssize_t uio_array_resid(struct uio **, u_int);
1017extern user_ssize_t recv_msg_array_resid(struct recv_msg_elem *, u_int);
1018
1019void sotoxsocket_n(struct socket *, struct xsocket_n *);
1020void sbtoxsockbuf_n(struct sockbuf *, struct xsockbuf_n *);
1021void sbtoxsockstat_n(struct socket *, struct xsockstat_n *);
1022
1023__END_DECLS
1024#endif /* BSD_KERNEL_PRIVATE */
1025#endif /* KERNEL_PRIVATE */
1026#endif /* !_SYS_SOCKETVAR_H_ */
1027