socketvar.h revision 296277
11541Srgrimes/*- 21541Srgrimes * Copyright (c) 1982, 1986, 1990, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * Redistribution and use in source and binary forms, with or without 61541Srgrimes * modification, are permitted provided that the following conditions 71541Srgrimes * are met: 81541Srgrimes * 1. Redistributions of source code must retain the above copyright 91541Srgrimes * notice, this list of conditions and the following disclaimer. 101541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111541Srgrimes * notice, this list of conditions and the following disclaimer in the 121541Srgrimes * documentation and/or other materials provided with the distribution. 131541Srgrimes * 4. Neither the name of the University nor the names of its contributors 141541Srgrimes * may be used to endorse or promote products derived from this software 151541Srgrimes * without specific prior written permission. 161541Srgrimes * 171541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271541Srgrimes * SUCH DAMAGE. 281541Srgrimes * 2914505Shsu * @(#)socketvar.h 8.3 (Berkeley) 2/19/95 30180948Skmacy * 3150477Speter * $FreeBSD: head/sys/sys/socketvar.h 296277 2016-03-01 18:12:14Z jhb $ 321541Srgrimes */ 331541Srgrimes 342165Spaul#ifndef _SYS_SOCKETVAR_H_ 352165Spaul#define _SYS_SOCKETVAR_H_ 362165Spaul 3715492Sbde#include <sys/queue.h> /* for TAILQ macros */ 3870834Swollman#include <sys/selinfo.h> /* for struct selinfo */ 39130380Srwatson#include <sys/_lock.h> 40130380Srwatson#include <sys/_mutex.h> 41270158Smarcel#include <sys/osd.h> 42169236Srwatson#include <sys/_sx.h> 43180948Skmacy#include <sys/sockbuf.h> 44180948Skmacy#include <sys/sockstate.h> 45180948Skmacy#ifdef _KERNEL 46272823Smarcel#include <sys/caprights.h> 47180948Skmacy#include <sys/sockopt.h> 48180948Skmacy#endif 491541Srgrimes 50191688Szecstruct vnet; 51191688Szec 521541Srgrimes/* 531541Srgrimes * Kernel structure per socket. 541541Srgrimes * Contains send and receive buffer queues, 551541Srgrimes * handle on protocol and pointer to protocol 561541Srgrimes * private data and error information. 571541Srgrimes */ 5836079Swollmantypedef u_quad_t so_gen_t; 5936079Swollman 60193272Sjhbstruct socket; 61193272Sjhb 62210226Strasz/*- 63129958Srwatson * Locking key to struct socket: 64129958Srwatson * (a) constant after allocation, no locking required. 65129958Srwatson * (b) locked by SOCK_LOCK(so). 66129958Srwatson * (c) locked by SOCKBUF_LOCK(&so->so_rcv). 67129958Srwatson * (e) locked by ACCEPT_LOCK(). 68129958Srwatson * (f) not locked since integer reads/writes are atomic. 69129958Srwatson * (g) used only as a sleep/wakeup address, no value. 70131168Srwatson * (h) locked by global mutex so_global_mtx. 7195552Stanimura */ 721541Srgrimesstruct socket { 73130387Srwatson int so_count; /* (b) reference count */ 74129958Srwatson short so_type; /* (a) generic type, see socket.h */ 7597658Stanimura short so_options; /* from socket call, see socket.h */ 7697658Stanimura short so_linger; /* time to linger while closing */ 77130818Srwatson short so_state; /* (b) internal state flags SS_* */ 78129979Srwatson int so_qstate; /* (e) internal state flags SQ_* */ 7998993Salfred void *so_pcb; /* protocol control block */ 80286836Sdelphij struct vnet *so_vnet; /* (a) network stack instance */ 81129958Srwatson struct protosw *so_proto; /* (a) protocol handle */ 821541Srgrimes/* 8313765Smpp * Variables for connection queuing. 841541Srgrimes * Socket where accepts occur is so_head in all subsidiary sockets. 851541Srgrimes * If so_head is 0, socket is not related to an accept. 8678913Sjlemon * For head socket so_incomp queues partially completed connections, 8778913Sjlemon * while so_comp is a queue of connections ready to be accepted. 881541Srgrimes * If a connection is aborted and it has so_head set, then 8978913Sjlemon * it has to be pulled out of either so_incomp or so_comp. 901541Srgrimes * We allow connections to queue up based on current queue lengths 911541Srgrimes * and limit on number of queued connections for this socket. 921541Srgrimes */ 93160604Srwatson struct socket *so_head; /* (e) back pointer to listen socket */ 94129979Srwatson TAILQ_HEAD(, socket) so_incomp; /* (e) queue of partial unaccepted connections */ 95129979Srwatson TAILQ_HEAD(, socket) so_comp; /* (e) queue of complete unaccepted connections */ 96129979Srwatson TAILQ_ENTRY(socket) so_list; /* (e) list of unaccepted connections */ 97295136Salfred u_int so_qlen; /* (e) number of unaccepted connections */ 98295136Salfred u_int so_incqlen; /* (e) number of unaccepted incomplete 9918787Spst connections */ 100295136Salfred u_int so_qlimit; /* (e) max number queued connections */ 101130527Srwatson short so_timeo; /* (g) connection timeout */ 102131029Srwatson u_short so_error; /* (f) error affecting connection */ 10397658Stanimura struct sigio *so_sigio; /* [sg] information for async I/O or 10441087Struckman out of band data (SIGURG) */ 105131017Srwatson u_long so_oobmark; /* (c) chars to oob mark */ 1061541Srgrimes 107180948Skmacy struct sockbuf so_rcv, so_snd; 108180948Skmacy 109130527Srwatson struct ucred *so_cred; /* (a) user credentials */ 110130398Srwatson struct label *so_label; /* (b) MAC label for socket */ 111130398Srwatson struct label *so_peerlabel; /* (b) cached MAC label for peer */ 112160605Srwatson /* NB: generation count must not be first. */ 113131168Srwatson so_gen_t so_gencnt; /* (h) generation count */ 114147852Sjhb void *so_emuldata; /* (b) private data for emulators */ 11597658Stanimura struct so_accf { 11697658Stanimura struct accept_filter *so_accept_filter; 11797658Stanimura void *so_accept_filter_arg; /* saved filter args */ 11897658Stanimura char *so_accept_filter_str; /* saved user args */ 11997658Stanimura } *so_accf; 120270158Smarcel struct osd osd; /* Object Specific extensions */ 121215178Sluigi /* 122215178Sluigi * so_fibnum, so_user_cookie and friends can be used to attach 123215178Sluigi * some user-specified metadata to a socket, which then can be 124215178Sluigi * used by the kernel for various actions. 125215178Sluigi * so_user_cookie is used by ipfw/dummynet. 126215178Sluigi */ 127178888Sjulian int so_fibnum; /* routing domain for this socket */ 128215178Sluigi uint32_t so_user_cookie; 1291541Srgrimes}; 1301541Srgrimes 1311541Srgrimes/* 132129979Srwatson * Global accept mutex to serialize access to accept queues and 133129979Srwatson * fields associated with multiple sockets. This allows us to 134129979Srwatson * avoid defining a lock order between listen and accept sockets 135129979Srwatson * until such time as it proves to be a good idea. 136129979Srwatson */ 137250300Sandreextern struct mtx accept_mtx; 138136682Srwatson#define ACCEPT_LOCK_ASSERT() mtx_assert(&accept_mtx, MA_OWNED) 139136682Srwatson#define ACCEPT_UNLOCK_ASSERT() mtx_assert(&accept_mtx, MA_NOTOWNED) 140130364Srwatson#define ACCEPT_LOCK() mtx_lock(&accept_mtx) 141130364Srwatson#define ACCEPT_UNLOCK() mtx_unlock(&accept_mtx) 142129979Srwatson 143129979Srwatson/* 144130380Srwatson * Per-socket mutex: we reuse the receive socket buffer mutex for space 145130380Srwatson * efficiency. This decision should probably be revisited as we optimize 146130380Srwatson * locking for the socket code. 147130380Srwatson */ 148130380Srwatson#define SOCK_MTX(_so) SOCKBUF_MTX(&(_so)->so_rcv) 149130380Srwatson#define SOCK_LOCK(_so) SOCKBUF_LOCK(&(_so)->so_rcv) 150130380Srwatson#define SOCK_OWNED(_so) SOCKBUF_OWNED(&(_so)->so_rcv) 151130380Srwatson#define SOCK_UNLOCK(_so) SOCKBUF_UNLOCK(&(_so)->so_rcv) 152130380Srwatson#define SOCK_LOCK_ASSERT(_so) SOCKBUF_LOCK_ASSERT(&(_so)->so_rcv) 153130380Srwatson 154130492Srwatson/* 155129916Srwatson * Socket state bits stored in so_qstate. 156129916Srwatson */ 157129916Srwatson#define SQ_INCOMP 0x0800 /* unaccepted, incomplete connection */ 158129916Srwatson#define SQ_COMP 0x1000 /* unaccepted, complete connection */ 159129916Srwatson 160129916Srwatson/* 16136079Swollman * Externalized form of struct socket used by the sysctl(3) interface. 16236079Swollman */ 16383045Sobrienstruct xsocket { 16436079Swollman size_t xso_len; /* length of this structure */ 16536079Swollman struct socket *xso_so; /* makes a convenient handle sometimes */ 16636079Swollman short so_type; 16736079Swollman short so_options; 16836079Swollman short so_linger; 16936079Swollman short so_state; 17036079Swollman caddr_t so_pcb; /* another convenient handle */ 17136079Swollman int xso_protocol; 17236079Swollman int xso_family; 173295136Salfred u_int so_qlen; 174295136Salfred u_int so_incqlen; 175295136Salfred u_int so_qlimit; 17636079Swollman short so_timeo; 17736079Swollman u_short so_error; 17836079Swollman pid_t so_pgid; 17936079Swollman u_long so_oobmark; 180180948Skmacy struct xsockbuf so_rcv, so_snd; 18136079Swollman uid_t so_uid; /* XXX */ 18236079Swollman}; 18314547Sdg 184130393Srwatson#ifdef _KERNEL 185130393Srwatson 1861541Srgrimes/* 1871541Srgrimes * Macros for sockets and socket buffering. 1881541Srgrimes */ 1891541Srgrimes 1901541Srgrimes/* 191175845Srwatson * Flags to sblock(). 192175845Srwatson */ 193175845Srwatson#define SBL_WAIT 0x00000001 /* Wait if not immediately available. */ 194175845Srwatson#define SBL_NOINTR 0x00000002 /* Force non-interruptible sleep. */ 195175845Srwatson#define SBL_VALID (SBL_WAIT | SBL_NOINTR) 196175845Srwatson 197175845Srwatson/* 19836527Speter * Do we need to notify the other side when I/O is possible? 19936527Speter */ 20055943Sjasone#define sb_notify(sb) (((sb)->sb_flags & (SB_WAIT | SB_SEL | SB_ASYNC | \ 20159288Sjlemon SB_UPCALL | SB_AIO | SB_KNOTE)) != 0) 20236527Speter 2031541Srgrimes/* do we have to send all at once on a socket? */ 2041541Srgrimes#define sosendallatonce(so) \ 2051541Srgrimes ((so)->so_proto->pr_flags & PR_ATOMIC) 2061541Srgrimes 2071541Srgrimes/* can we read something from so? */ 208195423Skib#define soreadabledata(so) \ 209274421Sglebius (sbavail(&(so)->so_rcv) >= (so)->so_rcv.sb_lowat || \ 21070536Sphk !TAILQ_EMPTY(&(so)->so_comp) || (so)->so_error) 211195423Skib#define soreadable(so) \ 212195423Skib (soreadabledata(so) || ((so)->so_rcv.sb_state & SBS_CANTRCVMORE)) 2131541Srgrimes 2141541Srgrimes/* can we write something to so? */ 2151541Srgrimes#define sowriteable(so) \ 2163304Sphk ((sbspace(&(so)->so_snd) >= (so)->so_snd.sb_lowat && \ 2171541Srgrimes (((so)->so_state&SS_ISCONNECTED) || \ 2183304Sphk ((so)->so_proto->pr_flags&PR_CONNREQUIRED)==0)) || \ 219130480Srwatson ((so)->so_snd.sb_state & SBS_CANTSENDMORE) || \ 2201541Srgrimes (so)->so_error) 2211541Srgrimes 2221541Srgrimes/* 22386487Sdillon * soref()/sorele() ref-count the socket structure. Note that you must 22486487Sdillon * still explicitly close the socket, but the last ref count will free 22586487Sdillon * the structure. 22686487Sdillon */ 227130383Srwatson#define soref(so) do { \ 228130387Srwatson SOCK_LOCK_ASSERT(so); \ 229130383Srwatson ++(so)->so_count; \ 230130383Srwatson} while (0) 23186487Sdillon 232130383Srwatson#define sorele(so) do { \ 233136682Srwatson ACCEPT_LOCK_ASSERT(); \ 234130387Srwatson SOCK_LOCK_ASSERT(so); \ 235130383Srwatson if ((so)->so_count <= 0) \ 236130383Srwatson panic("sorele"); \ 237130383Srwatson if (--(so)->so_count == 0) \ 238130383Srwatson sofree(so); \ 239136682Srwatson else { \ 240130387Srwatson SOCK_UNLOCK(so); \ 241136682Srwatson ACCEPT_UNLOCK(); \ 242136682Srwatson } \ 243130383Srwatson} while (0) 24486487Sdillon 245130831Srwatson/* 246130831Srwatson * In sorwakeup() and sowwakeup(), acquire the socket buffer lock to 247130831Srwatson * avoid a non-atomic test-and-wakeup. However, sowakeup is 248130831Srwatson * responsible for releasing the lock if it is called. We unlock only 249130831Srwatson * if we don't call into sowakeup. If any code is introduced that 250130831Srwatson * directly invokes the underlying sowakeup() primitives, it must 251130831Srwatson * maintain the same semantics. 252130831Srwatson */ 253130831Srwatson#define sorwakeup_locked(so) do { \ 254130831Srwatson SOCKBUF_LOCK_ASSERT(&(so)->so_rcv); \ 255130383Srwatson if (sb_notify(&(so)->so_rcv)) \ 256130831Srwatson sowakeup((so), &(so)->so_rcv); \ 257130831Srwatson else \ 258130831Srwatson SOCKBUF_UNLOCK(&(so)->so_rcv); \ 259130383Srwatson} while (0) 2601541Srgrimes 261130831Srwatson#define sorwakeup(so) do { \ 262130831Srwatson SOCKBUF_LOCK(&(so)->so_rcv); \ 263130831Srwatson sorwakeup_locked(so); \ 264130831Srwatson} while (0) 265130831Srwatson 266130831Srwatson#define sowwakeup_locked(so) do { \ 267131029Srwatson SOCKBUF_LOCK_ASSERT(&(so)->so_snd); \ 268130383Srwatson if (sb_notify(&(so)->so_snd)) \ 269130383Srwatson sowakeup((so), &(so)->so_snd); \ 270130831Srwatson else \ 271130831Srwatson SOCKBUF_UNLOCK(&(so)->so_snd); \ 272130383Srwatson} while (0) 2731541Srgrimes 274130831Srwatson#define sowwakeup(so) do { \ 275130831Srwatson SOCKBUF_LOCK(&(so)->so_snd); \ 276130831Srwatson sowwakeup_locked(so); \ 277130831Srwatson} while (0) 278130831Srwatson 27961837Salfredstruct accept_filter { 28061837Salfred char accf_name[16]; 281193272Sjhb int (*accf_callback) 28292719Salfred (struct socket *so, void *arg, int waitflag); 28361837Salfred void * (*accf_create) 28492719Salfred (struct socket *so, char *arg); 28561837Salfred void (*accf_destroy) 28692719Salfred (struct socket *so); 28795959Salfred SLIST_ENTRY(accept_filter) accf_next; 28882656Sjlemon}; 28961837Salfred 29031927Sbde#ifdef MALLOC_DECLARE 29195959SalfredMALLOC_DECLARE(M_ACCF); 29231927SbdeMALLOC_DECLARE(M_PCB); 29331927SbdeMALLOC_DECLARE(M_SONAME); 29431927Sbde#endif 29531927Sbde 296270158Smarcel/* 297270158Smarcel * Socket specific helper hook point identifiers 298270158Smarcel * Do not leave holes in the sequence, hook registration is a loop. 299270158Smarcel */ 300270158Smarcel#define HHOOK_SOCKET_OPT 0 301270158Smarcel#define HHOOK_SOCKET_CREATE 1 302270158Smarcel#define HHOOK_SOCKET_RCV 2 303270158Smarcel#define HHOOK_SOCKET_SND 3 304270158Smarcel#define HHOOK_FILT_SOREAD 4 305270158Smarcel#define HHOOK_FILT_SOWRITE 5 306270158Smarcel#define HHOOK_SOCKET_CLOSE 6 307270158Smarcel#define HHOOK_SOCKET_LAST HHOOK_SOCKET_CLOSE 308270158Smarcel 309270158Smarcelstruct socket_hhook_data { 310270158Smarcel struct socket *so; 311270158Smarcel struct mbuf *m; 312270158Smarcel void *hctx; /* hook point specific data*/ 313270158Smarcel int status; 314270158Smarcel}; 315270158Smarcel 31695959Salfredextern int maxsockets; 3172112Swollmanextern u_long sb_max; 31836079Swollmanextern so_gen_t so_gencnt; 31914505Shsu 320272823Smarcelstruct file; 321272823Smarcelstruct filedesc; 32215492Sbdestruct mbuf; 32315492Sbdestruct sockaddr; 32432995Sbdestruct ucred; 32532995Sbdestruct uio; 32615492Sbde 327193272Sjhb/* 'which' values for socket upcalls. */ 328193272Sjhb#define SO_RCV 1 329193272Sjhb#define SO_SND 2 330193272Sjhb 331193272Sjhb/* Return values for socket upcalls. */ 332193272Sjhb#define SU_OK 0 333193272Sjhb#define SU_ISCONNECTED 1 334193272Sjhb 3351541Srgrimes/* 3363304Sphk * From uipc_socket and friends 3373304Sphk */ 33892719Salfredint sockargs(struct mbuf **mp, caddr_t buf, int buflen, int type); 33992719Salfredint getsockaddr(struct sockaddr **namp, caddr_t uaddr, size_t len); 340281437Smjgint getsock_cap(struct thread *td, int fd, cap_rights_t *rightsp, 341272823Smarcel struct file **fpp, u_int *fflagp); 342156763Srwatsonvoid soabort(struct socket *so); 34392719Salfredint soaccept(struct socket *so, struct sockaddr **nam); 344296277Sjhbvoid soaio_rcv(void *context, int pending); 345296277Sjhbvoid soaio_snd(void *context, int pending); 34695959Salfredint socheckuid(struct socket *so, uid_t uid); 34792719Salfredint sobind(struct socket *so, struct sockaddr *nam, struct thread *td); 348247667Spjdint sobindat(int fd, struct socket *so, struct sockaddr *nam, 349247667Spjd struct thread *td); 35092719Salfredint soclose(struct socket *so); 35192719Salfredint soconnect(struct socket *so, struct sockaddr *nam, struct thread *td); 352247667Spjdint soconnectat(int fd, struct socket *so, struct sockaddr *nam, 353247667Spjd struct thread *td); 35492719Salfredint soconnect2(struct socket *so1, struct socket *so2); 35592719Salfredint socreate(int dom, struct socket **aso, int type, int proto, 35692719Salfred struct ucred *cred, struct thread *td); 35792719Salfredint sodisconnect(struct socket *so); 358126425Srwatsonstruct sockaddr *sodupsockaddr(const struct sockaddr *sa, int mflags); 35992719Salfredvoid sofree(struct socket *so); 36092719Salfredvoid sohasoutofband(struct socket *so); 36192719Salfredint solisten(struct socket *so, int backlog, struct thread *td); 362151888Srwatsonvoid solisten_proto(struct socket *so, int backlog); 363142190Srwatsonint solisten_proto_check(struct socket *so); 36414505Shsustruct socket * 36592719Salfred sonewconn(struct socket *head, int connstatus); 36653541Sshin 36753541Sshin 368101983Srwatsonint sopoll(struct socket *so, int events, struct ucred *active_cred, 36993008Sbde struct thread *td); 370160619Srwatsonint sopoll_generic(struct socket *so, int events, 371160619Srwatson struct ucred *active_cred, struct thread *td); 37293008Sbdeint soreceive(struct socket *so, struct sockaddr **paddr, struct uio *uio, 37393008Sbde struct mbuf **mp0, struct mbuf **controlp, int *flagsp); 374194672Sandreint soreceive_stream(struct socket *so, struct sockaddr **paddr, 375194672Sandre struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, 376194672Sandre int *flagsp); 377180198Srwatsonint soreceive_dgram(struct socket *so, struct sockaddr **paddr, 378180198Srwatson struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, 379180198Srwatson int *flagsp); 380160619Srwatsonint soreceive_generic(struct socket *so, struct sockaddr **paddr, 381160619Srwatson struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, 382160619Srwatson int *flagsp); 38392719Salfredint soreserve(struct socket *so, u_long sndcc, u_long rcvcc); 38492719Salfredvoid sorflush(struct socket *so); 38592719Salfredint sosend(struct socket *so, struct sockaddr *addr, struct uio *uio, 38693008Sbde struct mbuf *top, struct mbuf *control, int flags, 38793008Sbde struct thread *td); 388154294Srwatsonint sosend_dgram(struct socket *so, struct sockaddr *addr, 389154294Srwatson struct uio *uio, struct mbuf *top, struct mbuf *control, 390154294Srwatson int flags, struct thread *td); 391160619Srwatsonint sosend_generic(struct socket *so, struct sockaddr *addr, 392160619Srwatson struct uio *uio, struct mbuf *top, struct mbuf *control, 393160619Srwatson int flags, struct thread *td); 39492719Salfredint soshutdown(struct socket *so, int how); 39592719Salfredvoid sotoxsocket(struct socket *so, struct xsocket *xso); 396193272Sjhbvoid soupcall_clear(struct socket *so, int which); 397193272Sjhbvoid soupcall_set(struct socket *so, int which, 398193272Sjhb int (*func)(struct socket *, void *, int), void *arg); 39992719Salfredvoid sowakeup(struct socket *so, struct sockbuf *sb); 400296277Sjhbvoid sowakeup_aio(struct socket *so, struct sockbuf *sb); 401252356Sdavideint selsocket(struct socket *so, int events, struct timeval *tv, 402252356Sdavide struct thread *td); 40331927Sbde 40495959Salfred/* 40595959Salfred * Accept filter functions (duh). 40695959Salfred */ 40792719Salfredint accept_filt_add(struct accept_filter *filt); 40892719Salfredint accept_filt_del(char *name); 40995959Salfredstruct accept_filter *accept_filt_get(char *name); 41061837Salfred#ifdef ACCEPT_FILTER_MOD 41195959Salfred#ifdef SYSCTL_DECL 41265534SalfredSYSCTL_DECL(_net_inet_accf); 41395959Salfred#endif 41495959Salfredint accept_filt_generic_mod_event(module_t mod, int event, void *data); 41595959Salfred#endif 41661837Salfred 41755205Speter#endif /* _KERNEL */ 4182165Spaul 41914505Shsu#endif /* !_SYS_SOCKETVAR_H_ */ 420