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1 /*
2 * Copyright (c) 2000-2016 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 #ifdef KERNEL_PRIVATE
78 #include <sys/queue.h> /* for TAILQ macros */
79 #include <sys/select.h> /* for struct selinfo */
80 #include <net/kext_net.h>
81 #include <sys/ev.h>
82 #include <uuid/uuid.h>
83 #endif /* KERNEL_PRIVATE */
84
85 typedef u_quad_t so_gen_t;
86
87 #ifdef KERNEL_PRIVATE
88 struct mbuf;
89 struct socket_filter_entry;
90 struct protosw;
91 struct sockif;
92 struct sockutil;
93
94 /* strings for sleep message: */
95 extern char netio[], netcon[], netcls[];
96 #define SOCKET_CACHE_ON
97 #define SO_CACHE_FLUSH_INTERVAL 1 /* Seconds */
98 #define SO_CACHE_TIME_LIMIT (120/SO_CACHE_FLUSH_INTERVAL) /* Seconds */
99 #define SO_CACHE_MAX_FREE_BATCH 50
100 #define MAX_CACHED_SOCKETS 512
101 #define TEMPDEBUG 0
102 #endif /* KERNEL_PRIVATE */
103
104 #ifdef PRIVATE
105 #define SO_TC_STATS_MAX 4
106
107 struct data_stats {
108 u_int64_t rxpackets;
109 u_int64_t rxbytes;
110 u_int64_t txpackets;
111 u_int64_t txbytes;
112 };
113
114 #define MSG_PRI_0 0 /* TCP message priority, lowest */
115 #define MSG_PRI_1 1
116 #define MSG_PRI_2 2
117 #define MSG_PRI_3 3 /* TCP message priority, highest */
118 #define MSG_PRI_MAX MSG_PRI_3
119 #define MSG_PRI_MIN MSG_PRI_0
120 #define MSG_PRI_COUNT 4
121 #define MSG_PRI_DEFAULT MSG_PRI_1
122 #endif /* PRIVATE */
123
124 #ifdef KERNEL_PRIVATE
125 /* State for TCP message send or receive */
126 struct msg_priq {
127 struct mbuf *msgq_head; /* first mbuf in the queue */
128 struct mbuf *msgq_tail; /* last mbuf in the queue */
129 struct mbuf *msgq_lastmsg; /* last message in the queue */
130 u_int32_t msgq_flags; /* flags per priority queue */
131 #define MSGQ_MSG_NOTDONE 0x1 /* set when EOR of a msg is not seen */
132 u_int32_t msgq_bytes; /* data bytes in this queue */
133 };
134
135 struct msg_state {
136 struct msg_priq msg_priq[MSG_PRI_COUNT]; /* priority queues */
137 u_int32_t msg_serial_bytes; /* bytes moved to serial queue */
138 u_int32_t msg_uno_bytes; /* out-of-order chars in rcv buffer */
139 };
140
141 /* mbuf flag used to indicate out of order data received */
142 #define M_UNORDERED_DATA M_PROTO1
143
144 /*
145 * Kernel structure per socket.
146 * Contains send and receive buffer queues,
147 * handle on protocol and pointer to protocol
148 * private data and error information.
149 */
150 struct socket {
151 int so_zone; /* zone we were allocated from */
152 short so_type; /* generic type, see socket.h */
153 u_short so_error; /* error affecting connection */
154 u_int32_t so_options; /* from socket call, see socket.h */
155 short so_linger; /* time to linger while closing */
156 short so_state; /* internal state flags SS_*, below */
157 void *so_pcb; /* protocol control block */
158 struct protosw *so_proto; /* protocol handle */
159 /*
160 * Variables for connection queueing.
161 * Socket where accepts occur is so_head in all subsidiary sockets.
162 * If so_head is 0, socket is not related to an accept.
163 * For head socket so_incomp queues partially completed connections,
164 * while so_comp is a queue of connections ready to be accepted.
165 * If a connection is aborted and it has so_head set, then
166 * it has to be pulled out of either so_incomp or so_comp.
167 * We allow connections to queue up based on current queue lengths
168 * and limit on number of queued connections for this socket.
169 */
170 struct socket *so_head; /* back pointer to accept socket */
171 TAILQ_HEAD(, socket) so_incomp; /* q of partially unaccepted conns */
172 TAILQ_HEAD(, socket) so_comp; /* q of complete unaccepted conns */
173 TAILQ_ENTRY(socket) so_list; /* list of unaccepted connections */
174 short so_qlen; /* number of unaccepted connections */
175 short so_incqlen; /* number of unaccepted incomplete
176 connections */
177 short so_qlimit; /* max number queued connections */
178 short so_timeo; /* connection timeout */
179 pid_t so_pgid; /* pgid for signals */
180 u_int32_t so_oobmark; /* chars to oob mark */
181 /*
182 * Variables for socket buffering.
183 */
184 struct sockbuf {
185 u_int32_t sb_cc; /* actual chars in buffer */
186 u_int32_t sb_hiwat; /* max actual char count */
187 u_int32_t sb_mbcnt; /* chars of mbufs used */
188 u_int32_t sb_mbmax; /* max chars of mbufs to use */
189 u_int32_t sb_ctl; /* non-data chars in buffer */
190 u_int32_t sb_lowat; /* low water mark */
191 struct mbuf *sb_mb; /* the mbuf chain */
192 struct mbuf *sb_mbtail; /* the last mbuf in the chain */
193 struct mbuf *sb_lastrecord; /* first mbuf of last record */
194 struct socket *sb_so; /* socket back ptr for kexts */
195 struct selinfo sb_sel; /* process selecting rd/wr */
196 struct timeval sb_timeo; /* timeout for read/write */
197 u_int32_t sb_flags; /* flags, see below */
198 u_int32_t sb_idealsize; /* Ideal size for the sb based
199 on bandwidth and delay */
200 void (*sb_upcall)(struct socket *, void *arg, int waitf);
201 void *sb_upcallarg; /* Arg for above */
202 u_int32_t sb_wantlock; /* # of SB_LOCK waiters */
203 u_int32_t sb_waiters; /* # of data/space waiters */
204 thread_t sb_cfil_thread; /* content filter thread */
205 u_int32_t sb_cfil_refs; /* # of nested calls */
206 u_int32_t sb_preconn_hiwat; /* preconnect hiwat mark */
207 } so_rcv, so_snd;
208 #define SB_MAX (8192*1024) /* default for max chars in sockbuf */
209 #define LOW_SB_MAX (2*9*1024) /* lower limit on max socket buffer
210 size, 2 max datagrams */
211 #define SB_LOCK 0x1 /* lock on data queue */
212 #define SB_NOINTR 0x2 /* operations not interruptible */
213 #define SB_RECV 0x4 /* this is rcv sb */
214 #define SB_SEL 0x8 /* someone is selecting */
215 #define SB_ASYNC 0x10 /* ASYNC I/O, need signals */
216 #define SB_UPCALL 0x20 /* someone wants an upcall */
217 #define SB_KNOTE 0x40 /* kernel note attached */
218 #define SB_DROP 0x80 /* does not accept any more data */
219 #define SB_UNIX 0x100 /* UNIX domain socket buffer */
220 #define SB_USRSIZE 0x200 /* user specified sbreserve */
221 #define SB_AUTOSIZE 0x400 /* automatically size socket buffer */
222 #define SB_TRIM 0x800 /* Trim the socket buffer */
223 #define SB_NOCOMPRESS 0x1000 /* do not compress socket buffer */
224 #define SB_SNDBYTE_CNT 0x2000 /* keep track of snd bytes per interface */
225 caddr_t so_tpcb; /* Misc. protocol control block, used
226 by some kexts */
227
228 void (*so_event)(struct socket *, void *, u_int32_t);
229 void *so_eventarg; /* Arg for above */
230 kauth_cred_t so_cred; /* cred of who opened the socket */
231 /* NB: generation count must not be first; easiest to make it last. */
232 so_gen_t so_gencnt; /* generation count */
233 TAILQ_HEAD(, eventqelt) so_evlist;
234 STAILQ_ENTRY(socket) so_cache_ent; /* socache entry */
235 caddr_t so_saved_pcb; /* Saved pcb when cacheing */
236 u_int32_t cache_timestamp; /* time socket was cached */
237
238 pid_t last_pid; /* pid of most recent accessor */
239 u_int64_t last_upid; /* upid of most recent accessor */
240
241 struct mbuf *so_temp; /* Holding area for outbound frags */
242 /* Plug-in support - make the socket interface overridable */
243 struct mbuf *so_tail;
244 struct socket_filter_entry *so_filt; /* NKE hook */
245 u_int32_t so_flags; /* Flags */
246 #define SOF_NOSIGPIPE 0x00000001
247 #define SOF_NOADDRAVAIL 0x00000002 /* EADDRNOTAVAIL if src addr is gone */
248 #define SOF_PCBCLEARING 0x00000004 /* pru_disconnect done; don't
249 call pru_detach */
250 #define SOF_DEFUNCT 0x00000008 /* socket marked as inactive */
251 #define SOF_CLOSEWAIT 0x00000010 /* blocked in close awaiting some events */
252 #define SOF_REUSESHAREUID 0x00000040 /* Allows SO_REUSEADDR/SO_REUSEPORT
253 for multiple so_uid */
254 #define SOF_MULTIPAGES 0x00000080 /* jumbo clusters may be used for sosend */
255 #define SOF_ABORTED 0x00000100 /* soabort was already called once */
256 #define SOF_OVERFLOW 0x00000200 /* socket was dropped as overflow of
257 listen q */
258 #define SOF_NOTIFYCONFLICT 0x00000400 /* notify that a bind was done on a
259 port already in use */
260 #define SOF_UPCALLCLOSEWAIT 0x00000800 /* block close until upcall returns */
261 #define SOF_BINDRANDOMPORT 0x00001000 /* Randomized port number for bind */
262 #define SOF_NPX_SETOPTSHUT 0x00002000 /* Non POSIX extension to allow
263 setsockopt(2) after shut down */
264 #define SOF_RECV_TRAFFIC_CLASS 0x00004000 /* Receive TC as ancillary data */
265 #define SOF_NODEFUNCT 0x00008000 /* socket cannot be defunct'd */
266 #define SOF_PRIVILEGED_TRAFFIC_CLASS 0x00010000 /* traffic class is privileged */
267 #define SOF_SUSPENDED 0x00020000 /* i/f output queue is suspended */
268 #define SOF_INCOMP_INPROGRESS 0x00040000 /* incomp socket is being processed */
269 #define SOF_NOTSENT_LOWAT 0x00080000 /* A different lowat on not sent
270 data has been set */
271 #define SOF_KNOTE 0x00100000 /* socket is on the EV_SOCK klist */
272 #define SOF_USELRO 0x00200000 /* TCP must use LRO on these sockets */
273 #define SOF_ENABLE_MSGS 0x00400000 /* TCP must enable message delivery */
274 #define SOF_FLOW_DIVERT 0x00800000 /* Flow Divert is enabled */
275 #define SOF_MP_SUBFLOW 0x01000000 /* is a multipath subflow socket */
276 #define SOF_MPTCP_TRUE 0x02000000 /* Established e2e MPTCP connection */
277 #define SOF_MPTCP_CLIENT 0x04000000 /* Only client starts addtnal flows */
278 #define SOF_MP_SEC_SUBFLOW 0x08000000 /* Set up secondary flow */
279 #define SOF_MP_TRYFAILOVER 0x10000000 /* Failing subflow */
280 #define SOF_DELEGATED 0x20000000 /* on behalf of another process */
281 #define SOF_MPTCP_FASTJOIN 0x40000000 /* fast join support */
282 #define SOF_CONTENT_FILTER 0x80000000 /* Content filter enabled */
283
284 uint32_t so_upcallusecount; /* number of upcalls in progress */
285 int so_usecount; /* refcounting of socket use */;
286 int so_retaincnt;
287 u_int32_t so_filteruse; /* usecount for the socket filters */
288 u_int16_t so_traffic_class;
289 int8_t so_netsvctype;
290 u_int8_t so_restrictions;
291 thread_t so_send_filt_thread;
292
293 /* for debug pruposes */
294 #define SO_LCKDBG_MAX 4 /* number of debug locking Link Registers recorded */
295 void *lock_lr[SO_LCKDBG_MAX]; /* locking calling history */
296 void *unlock_lr[SO_LCKDBG_MAX]; /* unlocking caller history */
297 u_int8_t next_lock_lr;
298 u_int8_t next_unlock_lr;
299
300 u_int16_t so_pktheadroom; /* headroom before packet payload */
301
302 u_int32_t so_ifdenied_notifies; /* # of notifications generated */
303
304 struct label *so_label; /* MAC label for socket */
305 struct label *so_peerlabel; /* cached MAC label for socket peer */
306 thread_t so_background_thread; /* thread that marked
307 this socket background */
308 struct data_stats so_tc_stats[SO_TC_STATS_MAX];
309 struct klist so_klist; /* klist for EV_SOCK events */
310
311 struct msg_state *so_msg_state; /* unordered snd/rcv state */
312 struct flow_divert_pcb *so_fd_pcb; /* Flow Divert control block */
313
314 struct cfil_info *so_cfil;
315
316 u_int32_t so_eventmask; /* event mask */
317
318 pid_t e_pid; /* pid of the effective owner */
319 u_int64_t e_upid; /* upid of the effective owner */
320
321 uuid_t last_uuid; /* uuid of most recent accessor */
322 uuid_t e_uuid; /* uuid of effective owner */
323 uuid_t so_vuuid; /* UUID of the Voucher originator */
324
325 int32_t so_policy_gencnt; /* UUID policy gencnt */
326
327 u_int32_t so_flags1;
328 #define SOF1_POST_FALLBACK_SYNC 0x00000001 /* fallback to TCP */
329 #define SOF1_AWDL_PRIVILEGED 0x00000002 /* unused */
330 #define SOF1_IF_2KCL 0x00000004 /* interface prefers 2 KB clusters */
331 #define SOF1_DEFUNCTINPROG 0x00000008
332 #define SOF1_DATA_IDEMPOTENT 0x00000010 /* idempotent data for TFO */
333 #define SOF1_PRECONNECT_DATA 0x00000020 /* request for preconnect data */
334 #define SOF1_EXTEND_BK_IDLE_WANTED 0x00000040 /* option set */
335 #define SOF1_EXTEND_BK_IDLE_INPROG 0x00000080 /* socket */
336 #define SOF1_CACHED_IN_SOCK_LAYER 0x00000100 /* bundled with inpcb and
337 tcpcb */
338 #define SOF1_TFO_REWIND 0x00000200 /* rewind mptcp meta data */
339 #define SOF1_CELLFALLBACK 0x00000400 /* Initiated by cell fallback */
340 #define SOF1_QOSMARKING_ALLOWED 0x00000800 /* policy allows DSCP map */
341 #define SOF1_TC_NET_SERV_TYPE 0x00001000 /* traffic class set by SO_NETWORK_SERVICE_TYPE */
342 #define SOF1_TRAFFIC_MGT_SO_BACKGROUND 0x00002000 /* background socket */
343 #define SOF1_TRAFFIC_MGT_TCP_RECVBG 0x00004000 /* Only TCP sockets, receiver throttling */
344 #define SOF1_QOSMARKING_POLICY_OVERRIDE 0x00008000 /* Opt-out of QoS marking NECP policy */
345 u_int64_t so_extended_bk_start;
346 };
347
348 /* Control message accessor in mbufs */
349
350 #define _MIN_NXT_CMSGHDR_PTR(cmsg) \
351 ((char *)(cmsg) + \
352 __DARWIN_ALIGN32((__uint32_t)(cmsg)->cmsg_len) + \
353 __DARWIN_ALIGN32(sizeof(struct cmsghdr)))
354
355 #define M_FIRST_CMSGHDR(m) \
356 ((char *)(m) != (char *)0L && \
357 (size_t)(m)->m_len >= sizeof (struct cmsghdr) && \
358 (socklen_t)(m)->m_len >= \
359 __DARWIN_ALIGN32(((struct cmsghdr *)(void *)(m)->m_data)->cmsg_len) ? \
360 (struct cmsghdr *)(void *)(m)->m_data : (struct cmsghdr *)0L)
361
362 #define M_NXT_CMSGHDR(m, cmsg) \
363 ((char *)(cmsg) == (char *)0L ? M_FIRST_CMSGHDR(m) : \
364 _MIN_NXT_CMSGHDR_PTR(cmsg) > ((char *)(m)->m_data) + (m)->m_len || \
365 _MIN_NXT_CMSGHDR_PTR(cmsg) < (char *)(m)->m_data ? \
366 (struct cmsghdr *)0L /* NULL */ : \
367 (struct cmsghdr *)(void *)((unsigned char *)(cmsg) + \
368 __DARWIN_ALIGN32((__uint32_t)(cmsg)->cmsg_len)))
369
370 /*
371 * Socket state bits.
372 */
373 #define SS_NOFDREF 0x0001 /* no file table ref any more */
374 #define SS_ISCONNECTED 0x0002 /* socket connected to a peer */
375 #define SS_ISCONNECTING 0x0004 /* in process of connecting to peer */
376 #define SS_ISDISCONNECTING 0x0008 /* in process of disconnecting */
377 #define SS_CANTSENDMORE 0x0010 /* can't send more data to peer */
378 #define SS_CANTRCVMORE 0x0020 /* can't receive more data from peer */
379 #define SS_RCVATMARK 0x0040 /* at mark on input */
380
381 #define SS_PRIV 0x0080 /* privileged for broadcast, raw... */
382 #define SS_NBIO 0x0100 /* non-blocking ops */
383 #define SS_ASYNC 0x0200 /* async i/o notify */
384 #define SS_ISCONFIRMING 0x0400 /* deciding to accept connection req */
385 #define SS_INCOMP 0x0800 /* Unaccepted, incomplete connection */
386 #define SS_COMP 0x1000 /* unaccepted, complete connection */
387 #define SS_ISDISCONNECTED 0x2000 /* socket disconnected from peer */
388 #define SS_DRAINING 0x4000 /* close waiting for blocked system
389 calls to drain */
390 #define SS_DEFUNCT 0x8000 /* has been fully defunct'd */
391 #endif /* KERNEL_PRIVATE */
392
393 #if defined(__LP64__)
394 #define _XSOCKET_PTR(x) u_int32_t
395 #else
396 #define _XSOCKET_PTR(x) x
397 #endif
398
399 #ifdef PRIVATE
400 /* Flags returned in data field for EVFILT_SOCK events. */
401 #define SOCKEV_CONNECTED 0x00000001 /* connected */
402 #define SOCKEV_DISCONNECTED 0x00000002 /* disconnected */
403 #endif /* PRIVATE */
404
405 #pragma pack(4)
406
407 struct xsockbuf {
408 u_int32_t sb_cc;
409 u_int32_t sb_hiwat;
410 u_int32_t sb_mbcnt;
411 u_int32_t sb_mbmax;
412 int32_t sb_lowat;
413 short sb_flags;
414 short sb_timeo;
415 };
416
417 /*
418 * Externalized form of struct socket used by the sysctl(3) interface.
419 */
420 struct xsocket {
421 u_int32_t xso_len; /* length of this structure */
422 _XSOCKET_PTR(struct socket *) xso_so; /* makes a convenient handle */
423 short so_type;
424 short so_options;
425 short so_linger;
426 short so_state;
427 _XSOCKET_PTR(caddr_t) so_pcb; /* another convenient handle */
428 int xso_protocol;
429 int xso_family;
430 short so_qlen;
431 short so_incqlen;
432 short so_qlimit;
433 short so_timeo;
434 u_short so_error;
435 pid_t so_pgid;
436 u_int32_t so_oobmark;
437 struct xsockbuf so_rcv;
438 struct xsockbuf so_snd;
439 uid_t so_uid; /* XXX */
440 };
441
442 struct xsocket64 {
443 u_int32_t xso_len; /* length of this structure */
444 u_int64_t xso_so; /* makes a convenient handle */
445 short so_type;
446 short so_options;
447 short so_linger;
448 short so_state;
449 u_int64_t so_pcb; /* another convenient handle */
450 int xso_protocol;
451 int xso_family;
452 short so_qlen;
453 short so_incqlen;
454 short so_qlimit;
455 short so_timeo;
456 u_short so_error;
457 pid_t so_pgid;
458 u_int32_t so_oobmark;
459 struct xsockbuf so_rcv;
460 struct xsockbuf so_snd;
461 uid_t so_uid; /* XXX */
462 };
463
464 #ifdef PRIVATE
465 #define XSO_SOCKET 0x001
466 #define XSO_RCVBUF 0x002
467 #define XSO_SNDBUF 0x004
468 #define XSO_STATS 0x008
469 #define XSO_INPCB 0x010
470 #define XSO_TCPCB 0x020
471 #define XSO_KCREG 0x040
472 #define XSO_KCB 0x080
473 #define XSO_EVT 0x100
474
475 struct xsocket_n {
476 u_int32_t xso_len; /* length of this structure */
477 u_int32_t xso_kind; /* XSO_SOCKET */
478 u_int64_t xso_so; /* makes a convenient handle */
479 short so_type;
480 u_int32_t so_options;
481 short so_linger;
482 short so_state;
483 u_int64_t so_pcb; /* another convenient handle */
484 int xso_protocol;
485 int xso_family;
486 short so_qlen;
487 short so_incqlen;
488 short so_qlimit;
489 short so_timeo;
490 u_short so_error;
491 pid_t so_pgid;
492 u_int32_t so_oobmark;
493 uid_t so_uid; /* XXX */
494 pid_t so_last_pid;
495 pid_t so_e_pid;
496 };
497
498 struct xsockbuf_n {
499 u_int32_t xsb_len; /* length of this structure */
500 u_int32_t xsb_kind; /* XSO_RCVBUF or XSO_SNDBUF */
501 u_int32_t sb_cc;
502 u_int32_t sb_hiwat;
503 u_int32_t sb_mbcnt;
504 u_int32_t sb_mbmax;
505 int32_t sb_lowat;
506 short sb_flags;
507 short sb_timeo;
508 };
509
510 struct xsockstat_n {
511 u_int32_t xst_len; /* length of this structure */
512 u_int32_t xst_kind; /* XSO_STATS */
513 struct data_stats xst_tc_stats[SO_TC_STATS_MAX];
514 };
515
516 /*
517 * Global socket statistics
518 */
519 struct soextbkidlestat {
520 u_int32_t so_xbkidle_maxperproc;
521 u_int32_t so_xbkidle_time;
522 u_int32_t so_xbkidle_rcvhiwat;
523 int32_t so_xbkidle_notsupp;
524 int32_t so_xbkidle_toomany;
525 int32_t so_xbkidle_wantok;
526 int32_t so_xbkidle_active;
527 int32_t so_xbkidle_nocell;
528 int32_t so_xbkidle_notime;
529 int32_t so_xbkidle_forced;
530 int32_t so_xbkidle_resumed;
531 int32_t so_xbkidle_expired;
532 int32_t so_xbkidle_resched;
533 int32_t so_xbkidle_nodlgtd;
534 int32_t so_xbkidle_drained;
535 };
536 #endif /* PRIVATE */
537
538 #pragma pack()
539
540 #ifdef KERNEL_PRIVATE
541 #include <sys/kpi_mbuf.h>
542
543 /*
544 * Argument structure for sosetopt et seq. This is in the KERNEL
545 * section because it will never be visible to user code.
546 */
547 enum sopt_dir { SOPT_GET, SOPT_SET };
548 struct sockopt {
549 enum sopt_dir sopt_dir; /* is this a get or a set? */
550 int sopt_level; /* second arg of [gs]etsockopt */
551 int sopt_name; /* third arg of [gs]etsockopt */
552 user_addr_t sopt_val; /* fourth arg of [gs]etsockopt */
553 size_t sopt_valsize; /* (almost) fifth arg of [gs]etsockopt */
554 struct proc *sopt_p; /* calling process or null if kernel */
555 };
556
557 #ifdef MALLOC_DECLARE
558 MALLOC_DECLARE(M_PCB);
559 MALLOC_DECLARE(M_SONAME);
560 #endif /* MALLOC_DECLARE */
561
562 #ifdef BSD_KERNEL_PRIVATE
563 /*
564 * Socket extension mechanism: control block hooks:
565 * This is the "head" of any control block for an extenstion
566 * Note: we separate intercept function dispatch vectors from
567 * the NFDescriptor to permit selective replacement during
568 * operation, e.g., to disable some functions.
569 */
570 struct kextcb {
571 struct kextcb *e_next; /* Next kext control block */
572 void *e_fcb; /* Real filter control block */
573 struct NFDescriptor *e_nfd; /* NKE Descriptor */
574 /* Plug-in support - intercept functions */
575 struct sockif *e_soif; /* Socket functions */
576 struct sockutil *e_sout; /* Sockbuf utility functions */
577 };
578 #define EXT_NULL 0x0 /* STATE: Not in use */
579
580 /* Hints for socket event processing */
581 #define SO_FILT_HINT_LOCKED 0x00000001 /* socket is already locked */
582 #define SO_FILT_HINT_CONNRESET 0x00000002 /* Reset is received */
583 #define SO_FILT_HINT_CANTRCVMORE 0x00000004 /* No more data to read */
584 #define SO_FILT_HINT_CANTSENDMORE 0x00000008 /* Can't write more data */
585 #define SO_FILT_HINT_TIMEOUT 0x00000010 /* timeout */
586 #define SO_FILT_HINT_NOSRCADDR 0x00000020 /* No src address available */
587 #define SO_FILT_HINT_IFDENIED 0x00000040 /* interface denied access */
588 #define SO_FILT_HINT_SUSPEND 0x00000080 /* output queue suspended */
589 #define SO_FILT_HINT_RESUME 0x00000100 /* output queue resumed */
590 #define SO_FILT_HINT_KEEPALIVE 0x00000200 /* TCP Keepalive received */
591 #define SO_FILT_HINT_ADAPTIVE_WTIMO 0x00000400 /* TCP adaptive write timeout */
592 #define SO_FILT_HINT_ADAPTIVE_RTIMO 0x00000800 /* TCP adaptive read timeout */
593 #define SO_FILT_HINT_CONNECTED 0x00001000 /* socket is connected */
594 #define SO_FILT_HINT_DISCONNECTED 0x00002000 /* socket is disconnected */
595 #define SO_FILT_HINT_CONNINFO_UPDATED 0x00004000 /* updated conninfo avail. */
596 #define SO_FILT_HINT_MPFAILOVER 0x00008000 /* multipath failover */
597 #define SO_FILT_HINT_MPSTATUS 0x00010000 /* multipath status */
598 #define SO_FILT_HINT_MUSTRST 0x00020000 /* must send RST and close */
599 #define SO_FILT_HINT_MPFASTJ 0x00040000 /* can do MPTCP fast join */
600 #define SO_FILT_HINT_DELETEOK 0x00100000 /* Ok to delete socket */
601 #define SO_FILT_HINT_MPCANTRCVMORE 0x00200000 /* MPTCP DFIN Received */
602 #define SO_FILT_HINT_NOTIFY_ACK 0x00400000 /* Notify Acknowledgement */
603
604 #define SO_FILT_HINT_BITS \
605 "\020\1LOCKED\2CONNRESET\3CANTRCVMORE\4CANTSENDMORE\5TIMEOUT" \
606 "\6NOSRCADDR\7IFDENIED\10SUSPEND\11RESUME\12KEEPALIVE\13AWTIMO" \
607 "\14ARTIMO\15CONNECTED\16DISCONNECTED\17CONNINFO_UPDATED" \
608 "\20MPFAILOVER\21MPSTATUS\22MUSTRST\23MPFASTJ\25DELETEOK" \
609 "\26MPCANTRCVMORE\27NOTIFYACK"
610
611 /* Mask for hints that have corresponding kqueue events */
612 #define SO_FILT_HINT_EV \
613 (SO_FILT_HINT_CONNRESET | SO_FILT_HINT_CANTRCVMORE | \
614 SO_FILT_HINT_CANTSENDMORE | SO_FILT_HINT_TIMEOUT | \
615 SO_FILT_HINT_NOSRCADDR | SO_FILT_HINT_IFDENIED | \
616 SO_FILT_HINT_SUSPEND | SO_FILT_HINT_RESUME | \
617 SO_FILT_HINT_KEEPALIVE | SO_FILT_HINT_ADAPTIVE_WTIMO | \
618 SO_FILT_HINT_ADAPTIVE_RTIMO | SO_FILT_HINT_CONNECTED | \
619 SO_FILT_HINT_DISCONNECTED | SO_FILT_HINT_CONNINFO_UPDATED | \
620 SO_FILT_HINT_NOTIFY_ACK)
621
622 #if SENDFILE
623 struct sf_buf {
624 SLIST_ENTRY(sf_buf) free_list; /* list of free buffer slots */
625 int refcnt; /* reference count */
626 struct vm_page *m; /* currently mapped page */
627 vm_offset_t kva; /* va of mapping */
628 };
629 #endif /* SENDFILE */
630
631 #define SBLASTRECORDCHK(sb, s) \
632 if (socket_debug) sblastrecordchk(sb, s);
633
634 #define SBLASTMBUFCHK(sb, s) \
635 if (socket_debug) sblastmbufchk(sb, s);
636
637 #define SB_EMPTY_FIXUP(sb) { \
638 if ((sb)->sb_mb == NULL) { \
639 (sb)->sb_mbtail = NULL; \
640 (sb)->sb_lastrecord = NULL; \
641 } \
642 }
643
644 #define SB_MB_CHECK(sb) do { \
645 if (((sb)->sb_mb != NULL && \
646 (sb)->sb_cc == 0) || \
647 ((sb)->sb_mb == NULL && (sb)->sb_cc > 0)) \
648 panic("corrupt so_rcv: sb_mb %p sb_cc %d\n", \
649 (sb)->sb_mb, (sb)->sb_cc); \
650 } while (0)
651
652 #define SODEFUNCTLOG(fmt, ...) do { \
653 if (sodefunctlog) \
654 printf(fmt, __VA_ARGS__); \
655 } while (0)
656
657 #define SOTHROTTLELOG(fmt, ...) do { \
658 if (sothrottlelog) \
659 printf(fmt, __VA_ARGS__); \
660 } while (0)
661
662 /*
663 * For debugging traffic class behaviors
664 */
665 #define SOTCDB_RESERVED 0x01
666 #define SOTCDB_NO_MTC 0x02 /* Do not set the mbuf traffic class */
667 #define SOTCDB_NO_SENDTCPBG 0x04 /* Do not use background TCP CC algorithm for sender */
668 #define SOTCDB_NO_LCLTST 0x08 /* Do not test for local destination for setting DSCP */
669 #define SOTCDB_NO_DSCPTST 0x10 /* Overwritte any existing DSCP code */
670 #define SOTCDB_NO_RECVTCPBG 0x20 /* Do not use throttling on receiver-side of TCP */
671 #define SOTCDB_NO_PRIVILEGED 0x40 /* Do not set privileged traffic flag */
672
673 #define SOCK_DOM(so) ((so)->so_proto->pr_domain->dom_family)
674 #define SOCK_TYPE(so) ((so)->so_proto->pr_type)
675 #define SOCK_PROTO(so) ((so)->so_proto->pr_protocol)
676
677 #define SOCK_CHECK_DOM(so, dom) (SOCK_DOM(so) == (dom))
678 #define SOCK_CHECK_TYPE(so, type) (SOCK_TYPE(so) == (type))
679 #define SOCK_CHECK_PROTO(so, proto) (SOCK_PROTO(so) == (proto))
680
681 /*
682 * Socket process information
683 */
684 struct so_procinfo {
685 pid_t spi_pid;
686 pid_t spi_epid;
687 uuid_t spi_uuid;
688 uuid_t spi_euuid;
689 int spi_delegated;
690 };
691
692 extern u_int32_t sb_max;
693 extern so_gen_t so_gencnt;
694 extern int socket_debug;
695 extern int sosendjcl;
696 extern int sosendjcl_ignore_capab;
697 extern int sodefunctlog;
698 extern int sothrottlelog;
699 extern int sorestrictrecv;
700 extern int sorestrictsend;
701 extern int somaxconn;
702 extern uint32_t tcp_autosndbuf_max;
703 extern u_int32_t sotcdb;
704 extern u_int32_t net_io_policy_throttled;
705 extern u_int32_t net_io_policy_log;
706 extern u_int32_t net_io_policy_throttle_best_effort;
707 #if CONFIG_PROC_UUID_POLICY
708 extern u_int32_t net_io_policy_uuid;
709 #endif /* CONFIG_PROC_UUID_POLICY */
710
711 extern struct soextbkidlestat soextbkidlestat;
712
713 struct net_qos_dscp_map {
714 u_int8_t sotc_to_dscp[SO_TC_MAX];
715 u_int8_t netsvctype_to_dscp[_NET_SERVICE_TYPE_COUNT];
716 };
717
718 #endif /* BSD_KERNEL_PRIVATE */
719
720 struct mbuf;
721 struct sockaddr;
722 struct ucred;
723 struct uio;
724
725 #define SOCK_MSG_SA 0x01
726 #define SOCK_MSG_CONTROL 0x02
727 #define SOCK_MSG_DATA 0x04
728
729 struct recv_msg_elem {
730 struct uio *uio;
731 struct sockaddr *psa;
732 struct mbuf *controlp;
733 int which;
734 int flags;
735 };
736
737 /*
738 * From uipc_socket and friends
739 */
740 __BEGIN_DECLS
741 /* Exported */
742 extern int sbappendaddr(struct sockbuf *sb, struct sockaddr *asa,
743 struct mbuf *m0, struct mbuf *control, int *error_out);
744 extern int sbappendrecord(struct sockbuf *sb, struct mbuf *m0);
745 extern void sbflush(struct sockbuf *sb);
746 extern int sbspace(struct sockbuf *sb);
747 extern int soabort(struct socket *so);
748 extern void socantrcvmore(struct socket *so);
749 extern void socantsendmore(struct socket *so);
750 extern int sodisconnect(struct socket *so);
751 extern void sofree(struct socket *so);
752 extern void sofreelastref(struct socket *, int);
753 extern void soisconnected(struct socket *so);
754 extern boolean_t socanwrite(struct socket *so);
755 extern void soisconnecting(struct socket *so);
756 extern void soisdisconnected(struct socket *so);
757 extern void soisdisconnecting(struct socket *so);
758 extern struct socket *sonewconn(struct socket *head, int connstatus,
759 const struct sockaddr *from);
760 extern int sopoll(struct socket *so, int events, struct ucred *cred, void *wql);
761 extern int sooptcopyin(struct sockopt *sopt, void *data, size_t len,
762 size_t minlen);
763 extern int sooptcopyout(struct sockopt *sopt, void *data, size_t len);
764 extern int soreceive(struct socket *so, struct sockaddr **paddr,
765 struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp);
766 extern int soreserve(struct socket *so, u_int32_t sndcc, u_int32_t rcvcc);
767 extern void soreserve_preconnect(struct socket *so, unsigned int pre_cc);
768 extern void sorwakeup(struct socket *so);
769 extern int sosend(struct socket *so, struct sockaddr *addr, struct uio *uio,
770 struct mbuf *top, struct mbuf *control, int flags);
771 extern int sosend_list(struct socket *so, struct uio **uio, u_int uiocnt,
772 int flags);
773 extern int soreceive_list(struct socket *so, struct recv_msg_elem *msgarray,
774 u_int msgcnt, int *flags);
775 extern void sonullevent(struct socket *so, void *arg, uint32_t hint);
776 __END_DECLS
777
778 #ifdef BSD_KERNEL_PRIVATE
779 struct file;
780 struct filedesc;
781 struct so_tcdbg;
782
783 __BEGIN_DECLS
784 /* Not exported */
785 extern void socketinit(void);
786 extern struct sockaddr *dup_sockaddr(struct sockaddr *sa, int canwait);
787 extern int getsock(struct filedesc *fdp, int fd, struct file **fpp);
788 extern int sockargs(struct mbuf **mp, user_addr_t data, int buflen, int type);
789 extern void get_sockev_state(struct socket *, u_int32_t *);
790 extern void so_update_last_owner_locked(struct socket *, struct proc *);
791 extern void so_update_policy(struct socket *);
792
793 extern int sbappend(struct sockbuf *sb, struct mbuf *m);
794 extern int sbappendstream(struct sockbuf *sb, struct mbuf *m);
795 extern int sbappendcontrol(struct sockbuf *sb, struct mbuf *m0,
796 struct mbuf *control, int *error_out);
797 extern int sbappendmsgstream_rcv(struct sockbuf *sb, struct mbuf *m,
798 uint32_t seqnum, int flags);
799 extern int sbappendstream_rcvdemux(struct socket *so, struct mbuf *m,
800 uint32_t seqnum, int flags);
801 #if MPTCP
802 extern int sbappendmptcpstream_rcv(struct sockbuf *sb, struct mbuf *m);
803 #endif /* MPTCP */
804 extern int sbappendmsg_snd(struct sockbuf *sb, struct mbuf *m);
805 extern void sbpull_unordered_data(struct socket *, int32_t, int32_t);
806 extern void sbcheck(struct sockbuf *sb);
807 extern void sblastmbufchk(struct sockbuf *, const char *);
808 extern void sblastrecordchk(struct sockbuf *, const char *);
809 extern struct mbuf *sbcreatecontrol(caddr_t p, int size, int type, int level);
810 extern struct mbuf **sbcreatecontrol_mbuf(caddr_t p, int size, int type,
811 int level, struct mbuf **m);
812 extern void sbdrop(struct sockbuf *sb, int len);
813 extern void sbdroprecord(struct sockbuf *sb);
814 extern int sbinsertoob(struct sockbuf *sb, struct mbuf *m0);
815 extern void sbrelease(struct sockbuf *sb);
816 extern int sbreserve(struct sockbuf *sb, u_int32_t cc);
817 extern void sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb);
818 extern int sbwait(struct sockbuf *sb);
819 extern void sbwakeup(struct sockbuf *sb);
820 extern void sb_empty_assert(struct sockbuf *, const char *);
821 extern int sb_notify(struct sockbuf *sb);
822 extern void sballoc(struct sockbuf *sb, struct mbuf *m);
823 extern void sbfree(struct sockbuf *sb, struct mbuf *m);
824 extern void sbfree_chunk(struct sockbuf *sb, struct mbuf *m);
825
826 /*
827 * Flags to sblock().
828 */
829 #define SBL_WAIT 0x00000001 /* Wait if not immediately available. */
830 #define SBL_NOINTR 0x00000002 /* Force non-interruptible sleep. */
831 #define SBL_IGNDEFUNCT 0x00000004 /* Ignore defunct'd state */
832 #define SBL_VALID (SBL_WAIT | SBL_NOINTR | SBL_IGNDEFUNCT)
833 extern int sblock(struct sockbuf *sb, uint32_t flags);
834 extern void sbunlock(struct sockbuf *sb, boolean_t keeplocked);
835
836 extern int soaccept(struct socket *so, struct sockaddr **nam);
837 extern int soacceptlock(struct socket *so, struct sockaddr **nam, int dolock);
838 extern int soacceptfilter(struct socket *so, struct socket *head);
839 extern struct socket *soalloc(int waitok, int dom, int type);
840 extern int sobindlock(struct socket *so, struct sockaddr *nam, int dolock);
841 extern int soclose(struct socket *so);
842 extern int soclose_locked(struct socket *so);
843 extern void soclose_wait_locked(struct socket *so);
844 extern int soconnect(struct socket *so, struct sockaddr *nam);
845 extern int soconnectlock(struct socket *so, struct sockaddr *nam, int dolock);
846 extern int soconnect2(struct socket *so1, struct socket *so2);
847 extern int soconnectxlocked(struct socket *so, struct sockaddr_list **src_sl,
848 struct sockaddr_list **dst_sl, struct proc *, uint32_t, sae_associd_t,
849 sae_connid_t *, uint32_t, void *, u_int32_t, uio_t, user_ssize_t *);
850 extern int sodisconnectx(struct socket *so, sae_associd_t, sae_connid_t);
851 extern int sodisconnectxlocked(struct socket *so, sae_associd_t, sae_connid_t);
852 extern int sopeelofflocked(struct socket *so, sae_associd_t, struct socket **);
853 extern void soevupcall(struct socket *, u_int32_t);
854 /* flags for socreate_internal */
855 #define SOCF_ASYNC 0x1 /* non-blocking socket */
856 #define SOCF_MP_SUBFLOW 0x2 /* multipath subflow socket */
857 extern int socreate_internal(int dom, struct socket **aso, int type, int proto,
858 struct proc *, uint32_t, struct proc *);
859 extern int socreate(int dom, struct socket **aso, int type, int proto);
860 extern int socreate_delegate(int dom, struct socket **aso, int type, int proto,
861 pid_t epid);
862 extern void sodealloc(struct socket *so);
863 extern int sodisconnectlocked(struct socket *so);
864 extern void soreference(struct socket *so);
865 extern void sodereference(struct socket *so);
866 extern void somultipages(struct socket *, boolean_t);
867 extern void soif2kcl(struct socket *, boolean_t);
868 extern int sosetdefunct(struct proc *, struct socket *, int level, boolean_t);
869 extern int sodefunct(struct proc *, struct socket *, int level);
870 extern int soresume(struct proc *, struct socket *, int);
871 extern void resume_proc_sockets(proc_t);
872 extern int so_check_extended_bk_idle_time(struct socket *);
873 extern void so_drain_extended_bk_idle(struct socket *);
874 extern void sohasoutofband(struct socket *so);
875 extern void sodisconnectwakeup(struct socket *so);
876 extern int soisthrottled(struct socket *so);
877 extern int soisprivilegedtraffic(struct socket *so);
878 extern int soissrcbackground(struct socket *so);
879 extern int soissrcrealtime(struct socket *so);
880 extern int soissrcbesteffort(struct socket *so);
881 extern int solisten(struct socket *so, int backlog);
882 extern struct socket *sodropablereq(struct socket *head);
883 extern int socket_lock(struct socket *so, int refcount);
884 extern int socket_unlock(struct socket *so, int refcount);
885 extern int sogetaddr_locked(struct socket *, struct sockaddr **, int);
886 extern const char *solockhistory_nr(struct socket *);
887 extern void soevent(struct socket *so, long hint);
888 extern void sorflush(struct socket *so);
889 extern void sowflush(struct socket *so);
890 extern void sowakeup(struct socket *so, struct sockbuf *sb);
891 extern int soioctl(struct socket *so, u_long cmd, caddr_t data, struct proc *p);
892 extern int sogetoptlock(struct socket *so, struct sockopt *sopt, int);
893 extern int sosetoptlock(struct socket *so, struct sockopt *sopt, int);
894 extern int soshutdown(struct socket *so, int how);
895 extern int soshutdownlock(struct socket *so, int how);
896 extern int soshutdownlock_final(struct socket *so, int how);
897 extern void sotoxsocket(struct socket *so, struct xsocket *xso);
898 extern void sotoxsocket64(struct socket *so, struct xsocket64 *xso);
899 extern int sosendallatonce(struct socket *so);
900 extern int soreadable(struct socket *so);
901 extern int sowriteable(struct socket *so);
902 extern void sowwakeup(struct socket *so);
903 extern int sosendcheck(struct socket *, struct sockaddr *, user_ssize_t,
904 int32_t, int32_t, int, int *, struct mbuf *);
905
906 extern int soo_ioctl(struct fileproc *, u_long, caddr_t, vfs_context_t);
907 extern int soo_stat(struct socket *, void *, int);
908 extern int soo_select(struct fileproc *, int, void *, vfs_context_t);
909 extern int soo_kqfilter(struct fileproc *, struct knote *, vfs_context_t);
910
911 extern struct sockaddr_entry *sockaddrentry_alloc(int);
912 extern void sockaddrentry_free(struct sockaddr_entry *);
913 extern struct sockaddr_entry *sockaddrentry_dup(const struct sockaddr_entry *,
914 int);
915 extern struct sockaddr_list *sockaddrlist_alloc(int);
916 extern void sockaddrlist_free(struct sockaddr_list *);
917 extern void sockaddrlist_insert(struct sockaddr_list *,
918 struct sockaddr_entry *);
919 extern void sockaddrlist_remove(struct sockaddr_list *,
920 struct sockaddr_entry *);
921 extern struct sockaddr_list *sockaddrlist_dup(const struct sockaddr_list *,
922 int);
923
924 /* Service class flags used for setting service class on a packet */
925 #define PKT_SCF_IPV6 0x00000001 /* IPv6 packet */
926 #define PKT_SCF_TCP_ACK 0x00000002 /* Pure TCP ACK */
927 #define PKT_SCF_TCP_SYN 0x00000004 /* TCP SYN */
928
929 /*
930 * Flags for connectx(2) user-protocol request routine.
931 */
932
933 #define CONNREQF_MPTCP 0x1 /* called internally by MPTCP */
934 #define CONNREQF_UIO 0x2 /* there's data */
935 #define CONNREQF_IDEM 0x4 /* data is idempotent */
936
937 extern void set_packet_service_class(struct mbuf *, struct socket *,
938 mbuf_svc_class_t, u_int32_t);
939 extern void so_tc_update_stats(struct mbuf *, struct socket *,
940 mbuf_svc_class_t);
941 extern int so_tc_from_control(struct mbuf *, int *);
942 extern mbuf_svc_class_t so_tc2msc(int);
943 extern int so_svc2tc(mbuf_svc_class_t);
944
945 extern u_int8_t tcp_cansbgrow(struct sockbuf *sb);
946 extern int tcp_get_msg_priority(struct mbuf *, uint32_t *);
947 extern void set_tcp_stream_priority(struct socket *so);
948
949 extern int so_set_net_service_type(struct socket *, int);
950 extern int so_set_traffic_class(struct socket *, int);
951 extern void so_set_default_traffic_class(struct socket *);
952 extern int so_set_opportunistic(struct socket *, int);
953 extern int so_get_opportunistic(struct socket *);
954 extern int so_set_recv_anyif(struct socket *, int);
955 extern int so_get_recv_anyif(struct socket *);
956 extern int so_set_effective_pid(struct socket *, int, struct proc *);
957 extern int so_set_effective_uuid(struct socket *, uuid_t, struct proc *);
958 extern int so_set_restrictions(struct socket *, uint32_t);
959 extern uint32_t so_get_restrictions(struct socket *);
960 extern void socket_tclass_init(void);
961 #if (DEVELOPMENT || DEBUG)
962 extern int so_set_tcdbg(struct socket *, struct so_tcdbg *);
963 extern int sogetopt_tcdbg(struct socket *, struct sockopt *);
964 #endif /* (DEVELOPMENT || DEBUG) */
965 extern void so_set_lro(struct socket *, int);
966
967 extern int so_isdstlocal(struct socket *);
968 extern void so_recv_data_stat(struct socket *, struct mbuf *, size_t);
969 extern void so_inc_recv_data_stat(struct socket *, size_t, size_t, uint32_t);
970 extern int so_wait_for_if_feedback(struct socket *);
971 extern int msgq_sbspace(struct socket *so, struct mbuf *control);
972 extern int soopt_getm(struct sockopt *sopt, struct mbuf **mp);
973 extern int soopt_mcopyin(struct sockopt *sopt, struct mbuf *m);
974 extern int soopt_mcopyout(struct sockopt *sopt, struct mbuf *m);
975 extern boolean_t so_cache_timer(void);
976
977 extern void mptcp_preproc_sbdrop(struct socket *, struct mbuf *, unsigned int);
978 extern void mptcp_postproc_sbdrop(struct mbuf *, u_int64_t, u_int32_t,
979 u_int32_t);
980 extern int mptcp_adj_rmap(struct socket *, struct mbuf *);
981
982 extern void netpolicy_post_msg(uint32_t, struct netpolicy_event_data *,
983 uint32_t);
984 extern void socket_post_kev_msg(uint32_t, struct kev_socket_event_data *,
985 uint32_t);
986 extern void socket_post_kev_msg_closed(struct socket *);
987 /*
988 * Socket operation routines.
989 * These routines are called by the routines in
990 * sys_socket.c or from a system process, and
991 * implement the semantics of socket operations by
992 * switching out to the protocol specific routines.
993 */
994 extern void postevent(struct socket *, struct sockbuf *, int);
995 extern void evsofree(struct socket *);
996
997 extern int tcp_notsent_lowat_check(struct socket *so);
998
999 extern user_ssize_t uio_array_resid(struct uio **, u_int);
1000 extern user_ssize_t recv_msg_array_resid(struct recv_msg_elem *, u_int);
1001
1002 void sotoxsocket_n(struct socket *, struct xsocket_n *);
1003 void sbtoxsockbuf_n(struct sockbuf *, struct xsockbuf_n *);
1004 void sbtoxsockstat_n(struct socket *, struct xsockstat_n *);
1005
1006 __END_DECLS
1007 #endif /* BSD_KERNEL_PRIVATE */
1008 #endif /* KERNEL_PRIVATE */
1009 #endif /* !_SYS_SOCKETVAR_H_ */