socketvar.h revision 132018
1/*- 2 * Copyright (c) 1982, 1986, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)socketvar.h 8.3 (Berkeley) 2/19/95 30 * $FreeBSD: head/sys/sys/socketvar.h 132018 2004-07-12 06:22:42Z alfred $ 31 */ 32 33#ifndef _SYS_SOCKETVAR_H_ 34#define _SYS_SOCKETVAR_H_ 35 36#include <sys/queue.h> /* for TAILQ macros */ 37#include <sys/selinfo.h> /* for struct selinfo */ 38#include <sys/_lock.h> 39#include <sys/_mutex.h> 40 41/* 42 * Kernel structure per socket. 43 * Contains send and receive buffer queues, 44 * handle on protocol and pointer to protocol 45 * private data and error information. 46 */ 47typedef u_quad_t so_gen_t; 48 49/*- 50 * Locking key to struct socket: 51 * (a) constant after allocation, no locking required. 52 * (b) locked by SOCK_LOCK(so). 53 * (c) locked by SOCKBUF_LOCK(&so->so_rcv). 54 * (d) locked by SOCKBUF_LOCK(&so->so_snd). 55 * (e) locked by ACCEPT_LOCK(). 56 * (f) not locked since integer reads/writes are atomic. 57 * (g) used only as a sleep/wakeup address, no value. 58 * (h) locked by global mutex so_global_mtx. 59 */ 60struct socket { 61 int so_count; /* (b) reference count */ 62 short so_type; /* (a) generic type, see socket.h */ 63 short so_options; /* from socket call, see socket.h */ 64 short so_linger; /* time to linger while closing */ 65 short so_state; /* (b) internal state flags SS_* */ 66 int so_qstate; /* (e) internal state flags SQ_* */ 67 void *so_pcb; /* protocol control block */ 68 struct protosw *so_proto; /* (a) protocol handle */ 69/* 70 * Variables for connection queuing. 71 * Socket where accepts occur is so_head in all subsidiary sockets. 72 * If so_head is 0, socket is not related to an accept. 73 * For head socket so_incomp queues partially completed connections, 74 * while so_comp is a queue of connections ready to be accepted. 75 * If a connection is aborted and it has so_head set, then 76 * it has to be pulled out of either so_incomp or so_comp. 77 * We allow connections to queue up based on current queue lengths 78 * and limit on number of queued connections for this socket. 79 */ 80 struct socket *so_head; /* (e) back pointer to accept socket */ 81 TAILQ_HEAD(, socket) so_incomp; /* (e) queue of partial unaccepted connections */ 82 TAILQ_HEAD(, socket) so_comp; /* (e) queue of complete unaccepted connections */ 83 TAILQ_ENTRY(socket) so_list; /* (e) list of unaccepted connections */ 84 short so_qlen; /* (e) number of unaccepted connections */ 85 short so_incqlen; /* (e) number of unaccepted incomplete 86 connections */ 87 short so_qlimit; /* (e) max number queued connections */ 88 short so_timeo; /* (g) connection timeout */ 89 u_short so_error; /* (f) error affecting connection */ 90 struct sigio *so_sigio; /* [sg] information for async I/O or 91 out of band data (SIGURG) */ 92 u_long so_oobmark; /* (c) chars to oob mark */ 93 TAILQ_HEAD(, aiocblist) so_aiojobq; /* AIO ops waiting on socket */ 94/* 95 * Variables for socket buffering. 96 */ 97 struct sockbuf { 98 struct selinfo sb_sel; /* process selecting read/write */ 99 struct mtx sb_mtx; /* sockbuf lock */ 100#define sb_startzero sb_mb 101 struct mbuf *sb_mb; /* (c/d) the mbuf chain */ 102 struct mbuf *sb_mbtail; /* (c/d) the last mbuf in the chain */ 103 struct mbuf *sb_lastrecord; /* (c/d) first mbuf of last 104 * record in socket buffer */ 105 u_int sb_cc; /* (c/d) actual chars in buffer */ 106 u_int sb_hiwat; /* (c/d) max actual char count */ 107 u_int sb_mbcnt; /* (c/d) chars of mbufs used */ 108 u_int sb_mbmax; /* (c/d) max chars of mbufs to use */ 109 u_int sb_ctl; /* (c/d) non-data chars in buffer */ 110 int sb_lowat; /* (c/d) low water mark */ 111 int sb_timeo; /* (c/d) timeout for read/write */ 112 short sb_flags; /* (c/d) flags, see below */ 113 short sb_state; /* (c/d) socket state on sockbuf */ 114 } so_rcv, so_snd; 115/* 116 * Constants for sb_flags field of struct sockbuf. 117 */ 118#define SB_MAX (256*1024) /* default for max chars in sockbuf */ 119/* 120 * Constants for sb_flags field of struct sockbuf. 121 */ 122#define SB_LOCK 0x01 /* lock on data queue */ 123#define SB_WANT 0x02 /* someone is waiting to lock */ 124#define SB_WAIT 0x04 /* someone is waiting for data/space */ 125#define SB_SEL 0x08 /* someone is selecting */ 126#define SB_ASYNC 0x10 /* ASYNC I/O, need signals */ 127#define SB_UPCALL 0x20 /* someone wants an upcall */ 128#define SB_NOINTR 0x40 /* operations not interruptible */ 129#define SB_AIO 0x80 /* AIO operations queued */ 130#define SB_KNOTE 0x100 /* kernel note attached */ 131 132 void (*so_upcall)(struct socket *, void *, int); 133 void *so_upcallarg; 134 struct ucred *so_cred; /* (a) user credentials */ 135 struct label *so_label; /* (b) MAC label for socket */ 136 struct label *so_peerlabel; /* (b) cached MAC label for peer */ 137 /* NB: generation count must not be first; easiest to make it last. */ 138 so_gen_t so_gencnt; /* (h) generation count */ 139 void *so_emuldata; /* private data for emulators */ 140 struct so_accf { 141 struct accept_filter *so_accept_filter; 142 void *so_accept_filter_arg; /* saved filter args */ 143 char *so_accept_filter_str; /* saved user args */ 144 } *so_accf; 145}; 146 147#define SB_EMPTY_FIXUP(sb) do { \ 148 if ((sb)->sb_mb == NULL) { \ 149 (sb)->sb_mbtail = NULL; \ 150 (sb)->sb_lastrecord = NULL; \ 151 } \ 152} while (/*CONSTCOND*/0) 153 154/* 155 * Global accept mutex to serialize access to accept queues and 156 * fields associated with multiple sockets. This allows us to 157 * avoid defining a lock order between listen and accept sockets 158 * until such time as it proves to be a good idea. 159 */ 160extern struct mtx accept_mtx; 161#define ACCEPT_LOCK() mtx_lock(&accept_mtx) 162#define ACCEPT_UNLOCK() mtx_unlock(&accept_mtx) 163 164/* 165 * Per-socket buffer mutex used to protect most fields in the socket 166 * buffer. 167 */ 168#define SOCKBUF_MTX(_sb) (&(_sb)->sb_mtx) 169#define SOCKBUF_LOCK_INIT(_sb, _name) \ 170 mtx_init(SOCKBUF_MTX(_sb), _name, NULL, MTX_DEF) 171#define SOCKBUF_LOCK_DESTROY(_sb) mtx_destroy(SOCKBUF_MTX(_sb)) 172#define SOCKBUF_LOCK(_sb) mtx_lock(SOCKBUF_MTX(_sb)) 173#define SOCKBUF_OWNED(_sb) mtx_owned(SOCKBUF_MTX(_sb)) 174#define SOCKBUF_UNLOCK(_sb) mtx_unlock(SOCKBUF_MTX(_sb)) 175#define SOCKBUF_LOCK_ASSERT(_sb) mtx_assert(SOCKBUF_MTX(_sb), MA_OWNED) 176 177/* 178 * Per-socket mutex: we reuse the receive socket buffer mutex for space 179 * efficiency. This decision should probably be revisited as we optimize 180 * locking for the socket code. 181 */ 182#define SOCK_MTX(_so) SOCKBUF_MTX(&(_so)->so_rcv) 183#define SOCK_LOCK(_so) SOCKBUF_LOCK(&(_so)->so_rcv) 184#define SOCK_OWNED(_so) SOCKBUF_OWNED(&(_so)->so_rcv) 185#define SOCK_UNLOCK(_so) SOCKBUF_UNLOCK(&(_so)->so_rcv) 186#define SOCK_LOCK_ASSERT(_so) SOCKBUF_LOCK_ASSERT(&(_so)->so_rcv) 187 188/* 189 * Socket state bits. 190 * 191 * Historically, this bits were all kept in the so_state field. For 192 * locking reasons, they are now in multiple fields, as they are 193 * locked differently. so_state maintains basic socket state protected 194 * by the socket lock. so_qstate holds information about the socket 195 * accept queues. Each socket buffer also has a state field holding 196 * information relevant to that socket buffer (can't send, rcv). Many 197 * fields will be read without locks to improve performance and avoid 198 * lock order issues. However, this approach must be used with caution. 199 */ 200#define SS_NOFDREF 0x0001 /* no file table ref any more */ 201#define SS_ISCONNECTED 0x0002 /* socket connected to a peer */ 202#define SS_ISCONNECTING 0x0004 /* in process of connecting to peer */ 203#define SS_ISDISCONNECTING 0x0008 /* in process of disconnecting */ 204#define SS_NBIO 0x0100 /* non-blocking ops */ 205#define SS_ASYNC 0x0200 /* async i/o notify */ 206#define SS_ISCONFIRMING 0x0400 /* deciding to accept connection req */ 207#define SS_ISDISCONNECTED 0x2000 /* socket disconnected from peer */ 208 209/* 210 * Socket state bits now stored in the socket buffer state field. 211 */ 212#define SBS_CANTSENDMORE 0x0010 /* can't send more data to peer */ 213#define SBS_CANTRCVMORE 0x0020 /* can't receive more data from peer */ 214#define SBS_RCVATMARK 0x0040 /* at mark on input */ 215 216/* 217 * Socket state bits stored in so_qstate. 218 */ 219#define SQ_INCOMP 0x0800 /* unaccepted, incomplete connection */ 220#define SQ_COMP 0x1000 /* unaccepted, complete connection */ 221 222/* 223 * Externalized form of struct socket used by the sysctl(3) interface. 224 */ 225struct xsocket { 226 size_t xso_len; /* length of this structure */ 227 struct socket *xso_so; /* makes a convenient handle sometimes */ 228 short so_type; 229 short so_options; 230 short so_linger; 231 short so_state; 232 caddr_t so_pcb; /* another convenient handle */ 233 int xso_protocol; 234 int xso_family; 235 short so_qlen; 236 short so_incqlen; 237 short so_qlimit; 238 short so_timeo; 239 u_short so_error; 240 pid_t so_pgid; 241 u_long so_oobmark; 242 struct xsockbuf { 243 u_int sb_cc; 244 u_int sb_hiwat; 245 u_int sb_mbcnt; 246 u_int sb_mbmax; 247 int sb_lowat; 248 int sb_timeo; 249 short sb_flags; 250 } so_rcv, so_snd; 251 uid_t so_uid; /* XXX */ 252}; 253 254#ifdef _KERNEL 255 256/* 257 * Macros for sockets and socket buffering. 258 */ 259 260/* 261 * Do we need to notify the other side when I/O is possible? 262 */ 263#define sb_notify(sb) (((sb)->sb_flags & (SB_WAIT | SB_SEL | SB_ASYNC | \ 264 SB_UPCALL | SB_AIO | SB_KNOTE)) != 0) 265 266/* 267 * How much space is there in a socket buffer (so->so_snd or so->so_rcv)? 268 * This is problematical if the fields are unsigned, as the space might 269 * still be negative (cc > hiwat or mbcnt > mbmax). Should detect 270 * overflow and return 0. Should use "lmin" but it doesn't exist now. 271 */ 272#define sbspace(sb) \ 273 ((long) imin((int)((sb)->sb_hiwat - (sb)->sb_cc), \ 274 (int)((sb)->sb_mbmax - (sb)->sb_mbcnt))) 275 276/* do we have to send all at once on a socket? */ 277#define sosendallatonce(so) \ 278 ((so)->so_proto->pr_flags & PR_ATOMIC) 279 280/* can we read something from so? */ 281#define soreadable(so) \ 282 ((so)->so_rcv.sb_cc >= (so)->so_rcv.sb_lowat || \ 283 ((so)->so_rcv.sb_state & SBS_CANTRCVMORE) || \ 284 !TAILQ_EMPTY(&(so)->so_comp) || (so)->so_error) 285 286/* can we write something to so? */ 287#define sowriteable(so) \ 288 ((sbspace(&(so)->so_snd) >= (so)->so_snd.sb_lowat && \ 289 (((so)->so_state&SS_ISCONNECTED) || \ 290 ((so)->so_proto->pr_flags&PR_CONNREQUIRED)==0)) || \ 291 ((so)->so_snd.sb_state & SBS_CANTSENDMORE) || \ 292 (so)->so_error) 293 294/* adjust counters in sb reflecting allocation of m */ 295#define sballoc(sb, m) { \ 296 (sb)->sb_cc += (m)->m_len; \ 297 if ((m)->m_type != MT_DATA && (m)->m_type != MT_HEADER && \ 298 (m)->m_type != MT_OOBDATA) \ 299 (sb)->sb_ctl += (m)->m_len; \ 300 (sb)->sb_mbcnt += MSIZE; \ 301 if ((m)->m_flags & M_EXT) \ 302 (sb)->sb_mbcnt += (m)->m_ext.ext_size; \ 303} 304 305/* adjust counters in sb reflecting freeing of m */ 306#define sbfree(sb, m) { \ 307 (sb)->sb_cc -= (m)->m_len; \ 308 if ((m)->m_type != MT_DATA && (m)->m_type != MT_HEADER && \ 309 (m)->m_type != MT_OOBDATA) \ 310 (sb)->sb_ctl -= (m)->m_len; \ 311 (sb)->sb_mbcnt -= MSIZE; \ 312 if ((m)->m_flags & M_EXT) \ 313 (sb)->sb_mbcnt -= (m)->m_ext.ext_size; \ 314} 315 316/* 317 * Set lock on sockbuf sb; sleep if lock is already held. 318 * Unless SB_NOINTR is set on sockbuf, sleep is interruptible. 319 * Returns error without lock if sleep is interrupted. 320 */ 321#define sblock(sb, wf) ((sb)->sb_flags & SB_LOCK ? \ 322 (((wf) == M_WAITOK) ? sb_lock(sb) : EWOULDBLOCK) : \ 323 ((sb)->sb_flags |= SB_LOCK), 0) 324 325/* release lock on sockbuf sb */ 326#define sbunlock(sb) do { \ 327 SOCKBUF_LOCK_ASSERT(sb); \ 328 (sb)->sb_flags &= ~SB_LOCK; \ 329 if ((sb)->sb_flags & SB_WANT) { \ 330 (sb)->sb_flags &= ~SB_WANT; \ 331 wakeup(&(sb)->sb_flags); \ 332 } \ 333} while (0) 334 335/* 336 * soref()/sorele() ref-count the socket structure. Note that you must 337 * still explicitly close the socket, but the last ref count will free 338 * the structure. 339 */ 340#define soref(so) do { \ 341 SOCK_LOCK_ASSERT(so); \ 342 ++(so)->so_count; \ 343} while (0) 344 345#define sorele(so) do { \ 346 SOCK_LOCK_ASSERT(so); \ 347 if ((so)->so_count <= 0) \ 348 panic("sorele"); \ 349 if (--(so)->so_count == 0) \ 350 sofree(so); \ 351 else \ 352 SOCK_UNLOCK(so); \ 353} while (0) 354 355#define sotryfree(so) do { \ 356 SOCK_LOCK_ASSERT(so); \ 357 if ((so)->so_count == 0) \ 358 sofree(so); \ 359 else \ 360 SOCK_UNLOCK(so); \ 361} while(0) 362 363/* 364 * In sorwakeup() and sowwakeup(), acquire the socket buffer lock to 365 * avoid a non-atomic test-and-wakeup. However, sowakeup is 366 * responsible for releasing the lock if it is called. We unlock only 367 * if we don't call into sowakeup. If any code is introduced that 368 * directly invokes the underlying sowakeup() primitives, it must 369 * maintain the same semantics. 370 */ 371#define sorwakeup_locked(so) do { \ 372 SOCKBUF_LOCK_ASSERT(&(so)->so_rcv); \ 373 if (sb_notify(&(so)->so_rcv)) \ 374 sowakeup((so), &(so)->so_rcv); \ 375 else \ 376 SOCKBUF_UNLOCK(&(so)->so_rcv); \ 377} while (0) 378 379#define sorwakeup(so) do { \ 380 SOCKBUF_LOCK(&(so)->so_rcv); \ 381 sorwakeup_locked(so); \ 382} while (0) 383 384#define sowwakeup_locked(so) do { \ 385 SOCKBUF_LOCK_ASSERT(&(so)->so_snd); \ 386 if (sb_notify(&(so)->so_snd)) \ 387 sowakeup((so), &(so)->so_snd); \ 388 else \ 389 SOCKBUF_UNLOCK(&(so)->so_snd); \ 390} while (0) 391 392#define sowwakeup(so) do { \ 393 SOCKBUF_LOCK(&(so)->so_snd); \ 394 sowwakeup_locked(so); \ 395} while (0) 396 397/* 398 * Argument structure for sosetopt et seq. This is in the KERNEL 399 * section because it will never be visible to user code. 400 */ 401enum sopt_dir { SOPT_GET, SOPT_SET }; 402struct sockopt { 403 enum sopt_dir sopt_dir; /* is this a get or a set? */ 404 int sopt_level; /* second arg of [gs]etsockopt */ 405 int sopt_name; /* third arg of [gs]etsockopt */ 406 void *sopt_val; /* fourth arg of [gs]etsockopt */ 407 size_t sopt_valsize; /* (almost) fifth arg of [gs]etsockopt */ 408 struct thread *sopt_td; /* calling thread or null if kernel */ 409}; 410 411struct accept_filter { 412 char accf_name[16]; 413 void (*accf_callback) 414 (struct socket *so, void *arg, int waitflag); 415 void * (*accf_create) 416 (struct socket *so, char *arg); 417 void (*accf_destroy) 418 (struct socket *so); 419 SLIST_ENTRY(accept_filter) accf_next; 420}; 421 422#ifdef MALLOC_DECLARE 423MALLOC_DECLARE(M_ACCF); 424MALLOC_DECLARE(M_PCB); 425MALLOC_DECLARE(M_SONAME); 426#endif 427 428extern int maxsockets; 429extern u_long sb_max; 430extern struct uma_zone *socket_zone; 431extern so_gen_t so_gencnt; 432 433struct mbuf; 434struct sockaddr; 435struct ucred; 436struct uio; 437 438/* 439 * From uipc_socket and friends 440 */ 441int kern_setsockopt(struct socket *so, int level, int optname, 442 void *optval, size_t optlen); 443int sockargs(struct mbuf **mp, caddr_t buf, int buflen, int type); 444int getsockaddr(struct sockaddr **namp, caddr_t uaddr, size_t len); 445void sbappend(struct sockbuf *sb, struct mbuf *m); 446void sbappend_locked(struct sockbuf *sb, struct mbuf *m); 447void sbappendstream(struct sockbuf *sb, struct mbuf *m); 448void sbappendstream_locked(struct sockbuf *sb, struct mbuf *m); 449int sbappendaddr(struct sockbuf *sb, const struct sockaddr *asa, 450 struct mbuf *m0, struct mbuf *control); 451int sbappendaddr_locked(struct sockbuf *sb, const struct sockaddr *asa, 452 struct mbuf *m0, struct mbuf *control); 453int sbappendcontrol(struct sockbuf *sb, struct mbuf *m0, 454 struct mbuf *control); 455int sbappendcontrol_locked(struct sockbuf *sb, struct mbuf *m0, 456 struct mbuf *control); 457void sbappendrecord(struct sockbuf *sb, struct mbuf *m0); 458void sbappendrecord_locked(struct sockbuf *sb, struct mbuf *m0); 459void sbcheck(struct sockbuf *sb); 460void sbcompress(struct sockbuf *sb, struct mbuf *m, struct mbuf *n); 461struct mbuf * 462 sbcreatecontrol(caddr_t p, int size, int type, int level); 463void sbdrop(struct sockbuf *sb, int len); 464void sbdrop_locked(struct sockbuf *sb, int len); 465void sbdroprecord(struct sockbuf *sb); 466void sbdroprecord_locked(struct sockbuf *sb); 467void sbflush(struct sockbuf *sb); 468void sbflush_locked(struct sockbuf *sb); 469void sbinsertoob(struct sockbuf *sb, struct mbuf *m0); 470void sbinsertoob_locked(struct sockbuf *sb, struct mbuf *m0); 471void sbrelease(struct sockbuf *sb, struct socket *so); 472void sbrelease_locked(struct sockbuf *sb, struct socket *so); 473int sbreserve(struct sockbuf *sb, u_long cc, struct socket *so, 474 struct thread *td); 475int sbreserve_locked(struct sockbuf *sb, u_long cc, struct socket *so, 476 struct thread *td); 477void sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb); 478int sbwait(struct sockbuf *sb); 479int sb_lock(struct sockbuf *sb); 480int soabort(struct socket *so); 481int soaccept(struct socket *so, struct sockaddr **nam); 482struct socket *soalloc(int mflags); 483int socheckuid(struct socket *so, uid_t uid); 484int sobind(struct socket *so, struct sockaddr *nam, struct thread *td); 485void socantrcvmore(struct socket *so); 486void socantrcvmore_locked(struct socket *so); 487void socantsendmore(struct socket *so); 488void socantsendmore_locked(struct socket *so); 489int soclose(struct socket *so); 490int soconnect(struct socket *so, struct sockaddr *nam, struct thread *td); 491int soconnect2(struct socket *so1, struct socket *so2); 492int socow_setup(struct mbuf *m0, struct uio *uio); 493int socreate(int dom, struct socket **aso, int type, int proto, 494 struct ucred *cred, struct thread *td); 495void sodealloc(struct socket *so); 496int sodisconnect(struct socket *so); 497struct sockaddr *sodupsockaddr(const struct sockaddr *sa, int mflags); 498void sofree(struct socket *so); 499int sogetopt(struct socket *so, struct sockopt *sopt); 500void sohasoutofband(struct socket *so); 501void soisconnected(struct socket *so); 502void soisconnecting(struct socket *so); 503void soisdisconnected(struct socket *so); 504void soisdisconnecting(struct socket *so); 505int solisten(struct socket *so, int backlog, struct thread *td); 506struct socket * 507 sonewconn(struct socket *head, int connstatus); 508int sooptcopyin(struct sockopt *sopt, void *buf, size_t len, size_t minlen); 509int sooptcopyout(struct sockopt *sopt, const void *buf, size_t len); 510 511/* XXX; prepare mbuf for (__FreeBSD__ < 3) routines. */ 512int soopt_getm(struct sockopt *sopt, struct mbuf **mp); 513int soopt_mcopyin(struct sockopt *sopt, struct mbuf *m); 514int soopt_mcopyout(struct sockopt *sopt, struct mbuf *m); 515 516int sopoll(struct socket *so, int events, struct ucred *active_cred, 517 struct thread *td); 518int soreceive(struct socket *so, struct sockaddr **paddr, struct uio *uio, 519 struct mbuf **mp0, struct mbuf **controlp, int *flagsp); 520int soreserve(struct socket *so, u_long sndcc, u_long rcvcc); 521void sorflush(struct socket *so); 522int sosend(struct socket *so, struct sockaddr *addr, struct uio *uio, 523 struct mbuf *top, struct mbuf *control, int flags, 524 struct thread *td); 525int sosetopt(struct socket *so, struct sockopt *sopt); 526int soshutdown(struct socket *so, int how); 527void sotoxsocket(struct socket *so, struct xsocket *xso); 528void sowakeup(struct socket *so, struct sockbuf *sb); 529 530#ifdef SOCKBUF_DEBUG 531void sblastrecordchk(struct sockbuf *, const char *, int); 532#define SBLASTRECORDCHK(sb) sblastrecordchk((sb), __FILE__, __LINE__) 533 534void sblastmbufchk(struct sockbuf *, const char *, int); 535#define SBLASTMBUFCHK(sb) sblastmbufchk((sb), __FILE__, __LINE__) 536#else 537#define SBLASTRECORDCHK(sb) /* nothing */ 538#define SBLASTMBUFCHK(sb) /* nothing */ 539#endif /* SOCKBUF_DEBUG */ 540 541/* 542 * Accept filter functions (duh). 543 */ 544int accept_filt_add(struct accept_filter *filt); 545int accept_filt_del(char *name); 546struct accept_filter *accept_filt_get(char *name); 547#ifdef ACCEPT_FILTER_MOD 548#ifdef SYSCTL_DECL 549SYSCTL_DECL(_net_inet_accf); 550#endif 551int accept_filt_generic_mod_event(module_t mod, int event, void *data); 552#endif 553 554#endif /* _KERNEL */ 555 556#endif /* !_SYS_SOCKETVAR_H_ */ 557