2 * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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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.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)socket.h 8.4 (Berkeley) 2/21/94
33 #ifndef _SYS_SOCKET_H_
34 #define _SYS_SOCKET_H_
36 #include <sys/cdefs.h>
37 #include <sys/_types.h>
38 #include <sys/_iovec.h>
39 #include <machine/_align.h>
42 * Definitions related to sockets: types, address families, options.
49 #ifndef _GID_T_DECLARED
50 typedef __gid_t gid_t;
51 #define _GID_T_DECLARED
54 #ifndef _OFF_T_DECLARED
55 typedef __off_t off_t;
56 #define _OFF_T_DECLARED
59 #ifndef _PID_T_DECLARED
60 typedef __pid_t pid_t;
61 #define _PID_T_DECLARED
65 #ifndef _SA_FAMILY_T_DECLARED
66 typedef __sa_family_t sa_family_t;
67 #define _SA_FAMILY_T_DECLARED
70 #ifndef _SOCKLEN_T_DECLARED
71 typedef __socklen_t socklen_t;
72 #define _SOCKLEN_T_DECLARED
75 #ifndef _SSIZE_T_DECLARED
76 typedef __ssize_t ssize_t;
77 #define _SSIZE_T_DECLARED
81 #ifndef _UID_T_DECLARED
82 typedef __uid_t uid_t;
83 #define _UID_T_DECLARED
90 #define SOCK_STREAM 1 /* stream socket */
91 #define SOCK_DGRAM 2 /* datagram socket */
92 #define SOCK_RAW 3 /* raw-protocol interface */
94 #define SOCK_RDM 4 /* reliably-delivered message */
96 #define SOCK_SEQPACKET 5 /* sequenced packet stream */
99 * Option flags per-socket.
101 #define SO_DEBUG 0x0001 /* turn on debugging info recording */
102 #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
103 #define SO_REUSEADDR 0x0004 /* allow local address reuse */
104 #define SO_KEEPALIVE 0x0008 /* keep connections alive */
105 #define SO_DONTROUTE 0x0010 /* just use interface addresses */
106 #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
108 #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
110 #define SO_LINGER 0x0080 /* linger on close if data present */
111 #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
113 #define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
114 #define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */
115 #define SO_NOSIGPIPE 0x0800 /* no SIGPIPE from EPIPE */
116 #define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */
117 #define SO_BINTIME 0x2000 /* timestamp received dgram traffic */
119 #define SO_NO_OFFLOAD 0x4000 /* socket cannot be offloaded */
120 #define SO_NO_DDP 0x8000 /* disable direct data placement */
123 * Additional options, not kept in so_options.
125 #define SO_SNDBUF 0x1001 /* send buffer size */
126 #define SO_RCVBUF 0x1002 /* receive buffer size */
127 #define SO_SNDLOWAT 0x1003 /* send low-water mark */
128 #define SO_RCVLOWAT 0x1004 /* receive low-water mark */
129 #define SO_SNDTIMEO 0x1005 /* send timeout */
130 #define SO_RCVTIMEO 0x1006 /* receive timeout */
131 #define SO_ERROR 0x1007 /* get error status and clear */
132 #define SO_TYPE 0x1008 /* get socket type */
134 #define SO_LABEL 0x1009 /* socket's MAC label */
135 #define SO_PEERLABEL 0x1010 /* socket's peer's MAC label */
136 #define SO_LISTENQLIMIT 0x1011 /* socket's backlog limit */
137 #define SO_LISTENQLEN 0x1012 /* socket's complete queue length */
138 #define SO_LISTENINCQLEN 0x1013 /* socket's incomplete queue length */
139 #define SO_SETFIB 0x1014 /* use this FIB to route */
140 #define SO_USER_COOKIE 0x1015 /* user cookie (dummynet etc.) */
144 * Structure used for manipulating linger option.
147 int l_onoff; /* option on/off */
148 int l_linger; /* linger time */
152 struct accept_filter_arg {
159 * Level number for (get/set)sockopt() to apply to socket itself.
161 #define SOL_SOCKET 0xffff /* options for socket level */
166 #define AF_UNSPEC 0 /* unspecified */
168 #define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */
170 #define AF_UNIX 1 /* standardized name for AF_LOCAL */
171 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */
173 #define AF_IMPLINK 3 /* arpanet imp addresses */
174 #define AF_PUP 4 /* pup protocols: e.g. BSP */
175 #define AF_CHAOS 5 /* mit CHAOS protocols */
176 #define AF_NETBIOS 6 /* SMB protocols */
177 #define AF_ISO 7 /* ISO protocols */
178 #define AF_OSI AF_ISO
179 #define AF_ECMA 8 /* European computer manufacturers */
180 #define AF_DATAKIT 9 /* datakit protocols */
181 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */
182 #define AF_SNA 11 /* IBM SNA */
183 #define AF_DECnet 12 /* DECnet */
184 #define AF_DLI 13 /* DEC Direct data link interface */
185 #define AF_LAT 14 /* LAT */
186 #define AF_HYLINK 15 /* NSC Hyperchannel */
187 #define AF_APPLETALK 16 /* Apple Talk */
188 #define AF_ROUTE 17 /* Internal Routing Protocol */
189 #define AF_LINK 18 /* Link layer interface */
190 #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */
191 #define AF_COIP 20 /* connection-oriented IP, aka ST II */
192 #define AF_CNT 21 /* Computer Network Technology */
193 #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */
194 #define AF_IPX 23 /* Novell Internet Protocol */
195 #define AF_SIP 24 /* Simple Internet Protocol */
196 #define pseudo_AF_PIP 25 /* Help Identify PIP packets */
197 #define AF_ISDN 26 /* Integrated Services Digital Network*/
198 #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */
199 #define pseudo_AF_KEY 27 /* Internal key-management function */
201 #define AF_INET6 28 /* IPv6 */
203 #define AF_NATM 29 /* native ATM access */
204 #define AF_ATM 30 /* ATM */
205 #define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers
206 * in interface output routine
208 #define AF_NETGRAPH 32 /* Netgraph sockets */
209 #define AF_SLOW 33 /* 802.3ad slow protocol */
210 #define AF_SCLUSTER 34 /* Sitara cluster protocol */
212 #define AF_BLUETOOTH 36 /* Bluetooth sockets */
213 #define AF_IEEE80211 37 /* IEEE 802.11 protocol */
216 * When allocating a new AF_ constant, please only allocate
217 * even numbered constants for FreeBSD until 134 as odd numbered AF_
218 * constants 39-133 are now reserved for vendors.
220 #define AF_VENDOR00 39
221 #define AF_VENDOR01 41
222 #define AF_VENDOR02 43
223 #define AF_VENDOR03 45
224 #define AF_VENDOR04 47
225 #define AF_VENDOR05 49
226 #define AF_VENDOR06 51
227 #define AF_VENDOR07 53
228 #define AF_VENDOR08 55
229 #define AF_VENDOR09 57
230 #define AF_VENDOR10 59
231 #define AF_VENDOR11 61
232 #define AF_VENDOR12 63
233 #define AF_VENDOR13 65
234 #define AF_VENDOR14 67
235 #define AF_VENDOR15 69
236 #define AF_VENDOR16 71
237 #define AF_VENDOR17 73
238 #define AF_VENDOR18 75
239 #define AF_VENDOR19 77
240 #define AF_VENDOR20 79
241 #define AF_VENDOR21 81
242 #define AF_VENDOR22 83
243 #define AF_VENDOR23 85
244 #define AF_VENDOR24 87
245 #define AF_VENDOR25 89
246 #define AF_VENDOR26 91
247 #define AF_VENDOR27 93
248 #define AF_VENDOR28 95
249 #define AF_VENDOR29 97
250 #define AF_VENDOR30 99
251 #define AF_VENDOR31 101
252 #define AF_VENDOR32 103
253 #define AF_VENDOR33 105
254 #define AF_VENDOR34 107
255 #define AF_VENDOR35 109
256 #define AF_VENDOR36 111
257 #define AF_VENDOR37 113
258 #define AF_VENDOR38 115
259 #define AF_VENDOR39 117
260 #define AF_VENDOR40 119
261 #define AF_VENDOR41 121
262 #define AF_VENDOR42 123
263 #define AF_VENDOR43 125
264 #define AF_VENDOR44 127
265 #define AF_VENDOR45 129
266 #define AF_VENDOR46 131
267 #define AF_VENDOR47 133
271 * Structure used by kernel to store most
275 unsigned char sa_len; /* total length */
276 sa_family_t sa_family; /* address family */
277 char sa_data[14]; /* actually longer; address value */
280 #define SOCK_MAXADDRLEN 255 /* longest possible addresses */
283 * Structure used by kernel to pass protocol
284 * information in raw sockets.
287 unsigned short sp_family; /* address family */
288 unsigned short sp_protocol; /* protocol */
292 #include <sys/_sockaddr_storage.h>
296 * Protocol families, same as address families for now.
298 #define PF_UNSPEC AF_UNSPEC
299 #define PF_LOCAL AF_LOCAL
300 #define PF_UNIX PF_LOCAL /* backward compatibility */
301 #define PF_INET AF_INET
302 #define PF_IMPLINK AF_IMPLINK
303 #define PF_PUP AF_PUP
304 #define PF_CHAOS AF_CHAOS
305 #define PF_NETBIOS AF_NETBIOS
306 #define PF_ISO AF_ISO
307 #define PF_OSI AF_ISO
308 #define PF_ECMA AF_ECMA
309 #define PF_DATAKIT AF_DATAKIT
310 #define PF_CCITT AF_CCITT
311 #define PF_SNA AF_SNA
312 #define PF_DECnet AF_DECnet
313 #define PF_DLI AF_DLI
314 #define PF_LAT AF_LAT
315 #define PF_HYLINK AF_HYLINK
316 #define PF_APPLETALK AF_APPLETALK
317 #define PF_ROUTE AF_ROUTE
318 #define PF_LINK AF_LINK
319 #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */
320 #define PF_COIP AF_COIP
321 #define PF_CNT AF_CNT
322 #define PF_SIP AF_SIP
323 #define PF_IPX AF_IPX
324 #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */
325 #define PF_PIP pseudo_AF_PIP
326 #define PF_ISDN AF_ISDN
327 #define PF_KEY pseudo_AF_KEY
328 #define PF_INET6 AF_INET6
329 #define PF_NATM AF_NATM
330 #define PF_ATM AF_ATM
331 #define PF_NETGRAPH AF_NETGRAPH
332 #define PF_SLOW AF_SLOW
333 #define PF_SCLUSTER AF_SCLUSTER
334 #define PF_ARP AF_ARP
335 #define PF_BLUETOOTH AF_BLUETOOTH
337 #define PF_MAX AF_MAX
340 * Definitions for network related sysctl, CTL_NET.
342 * Second level is protocol family.
343 * Third level is protocol number.
345 * Further levels are defined by the individual families below.
347 #define NET_MAXID AF_MAX
349 #define CTL_NET_NAMES { \
351 { "unix", CTLTYPE_NODE }, \
352 { "inet", CTLTYPE_NODE }, \
353 { "implink", CTLTYPE_NODE }, \
354 { "pup", CTLTYPE_NODE }, \
355 { "chaos", CTLTYPE_NODE }, \
356 { "xerox_ns", CTLTYPE_NODE }, \
357 { "iso", CTLTYPE_NODE }, \
358 { "emca", CTLTYPE_NODE }, \
359 { "datakit", CTLTYPE_NODE }, \
360 { "ccitt", CTLTYPE_NODE }, \
361 { "ibm_sna", CTLTYPE_NODE }, \
362 { "decnet", CTLTYPE_NODE }, \
363 { "dec_dli", CTLTYPE_NODE }, \
364 { "lat", CTLTYPE_NODE }, \
365 { "hylink", CTLTYPE_NODE }, \
366 { "appletalk", CTLTYPE_NODE }, \
367 { "route", CTLTYPE_NODE }, \
368 { "link_layer", CTLTYPE_NODE }, \
369 { "xtp", CTLTYPE_NODE }, \
370 { "coip", CTLTYPE_NODE }, \
371 { "cnt", CTLTYPE_NODE }, \
372 { "rtip", CTLTYPE_NODE }, \
373 { "ipx", CTLTYPE_NODE }, \
374 { "sip", CTLTYPE_NODE }, \
375 { "pip", CTLTYPE_NODE }, \
376 { "isdn", CTLTYPE_NODE }, \
377 { "key", CTLTYPE_NODE }, \
378 { "inet6", CTLTYPE_NODE }, \
379 { "natm", CTLTYPE_NODE }, \
380 { "atm", CTLTYPE_NODE }, \
381 { "hdrcomplete", CTLTYPE_NODE }, \
382 { "netgraph", CTLTYPE_NODE }, \
383 { "snp", CTLTYPE_NODE }, \
384 { "scp", CTLTYPE_NODE }, \
388 * PF_ROUTE - Routing table
390 * Three additional levels are defined:
391 * Fourth: address family, 0 is wildcard
392 * Fifth: type of info, defined below
393 * Sixth: flag(s) to mask with for NET_RT_FLAGS
395 #define NET_RT_DUMP 1 /* dump; may limit to a.f. */
396 #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */
397 #define NET_RT_IFLIST 3 /* survey interface list */
398 #define NET_RT_IFMALIST 4 /* return multicast address list */
399 #define NET_RT_MAXID 5
401 #define CTL_NET_RT_NAMES { \
403 { "dump", CTLTYPE_STRUCT }, \
404 { "flags", CTLTYPE_STRUCT }, \
405 { "iflist", CTLTYPE_STRUCT }, \
406 { "ifmalist", CTLTYPE_STRUCT }, \
408 #endif /* __BSD_VISIBLE */
411 * Maximum queue length specifiable by listen.
413 #define SOMAXCONN 128
416 * Message header for recvmsg and sendmsg calls.
417 * Used value-result for recvmsg, value only for sendmsg.
420 void *msg_name; /* optional address */
421 socklen_t msg_namelen; /* size of address */
422 struct iovec *msg_iov; /* scatter/gather array */
423 int msg_iovlen; /* # elements in msg_iov */
424 void *msg_control; /* ancillary data, see below */
425 socklen_t msg_controllen; /* ancillary data buffer len */
426 int msg_flags; /* flags on received message */
429 #define MSG_OOB 0x1 /* process out-of-band data */
430 #define MSG_PEEK 0x2 /* peek at incoming message */
431 #define MSG_DONTROUTE 0x4 /* send without using routing tables */
432 #define MSG_EOR 0x8 /* data completes record */
433 #define MSG_TRUNC 0x10 /* data discarded before delivery */
434 #define MSG_CTRUNC 0x20 /* control data lost before delivery */
435 #define MSG_WAITALL 0x40 /* wait for full request or error */
436 #define MSG_NOTIFICATION 0x2000 /* SCTP notification */
438 #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
439 #define MSG_EOF 0x100 /* data completes connection */
440 #define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */
441 #define MSG_COMPAT 0x8000 /* used in sendit() */
444 #define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */
447 #define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */
451 * Header for ancillary data objects in msg_control buffer.
452 * Used for additional information with/about a datagram
453 * not expressible by flags. The format is a sequence
454 * of message elements headed by cmsghdr structures.
457 socklen_t cmsg_len; /* data byte count, including hdr */
458 int cmsg_level; /* originating protocol */
459 int cmsg_type; /* protocol-specific type */
460 /* followed by u_char cmsg_data[]; */
465 * While we may have more groups than this, the cmsgcred struct must
466 * be able to fit in an mbuf and we have historically supported a
467 * maximum of 16 groups.
469 #define CMGROUP_MAX 16
472 * Credentials structure, used to verify the identity of a peer
473 * process that has sent us a message. This is allocated by the
474 * peer process but filled in by the kernel. This prevents the
475 * peer from lying about its identity. (Note that cmcred_groups[0]
476 * is the effective GID.)
479 pid_t cmcred_pid; /* PID of sending process */
480 uid_t cmcred_uid; /* real UID of sending process */
481 uid_t cmcred_euid; /* effective UID of sending process */
482 gid_t cmcred_gid; /* real GID of sending process */
483 short cmcred_ngroups; /* number or groups */
484 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */
488 * Socket credentials.
491 uid_t sc_uid; /* real user id */
492 uid_t sc_euid; /* effective user id */
493 gid_t sc_gid; /* real group id */
494 gid_t sc_egid; /* effective group id */
495 int sc_ngroups; /* number of supplemental groups */
496 gid_t sc_groups[1]; /* variable length */
500 * Compute size of a sockcred structure with groups.
502 #define SOCKCREDSIZE(ngrps) \
503 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
505 #endif /* __BSD_VISIBLE */
507 /* given pointer to struct cmsghdr, return pointer to data */
508 #define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \
509 _ALIGN(sizeof(struct cmsghdr)))
511 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
512 #define CMSG_NXTHDR(mhdr, cmsg) \
513 ((char *)(cmsg) == NULL ? CMSG_FIRSTHDR(mhdr) : \
514 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \
515 _ALIGN(sizeof(struct cmsghdr)) > \
516 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
517 (struct cmsghdr *)0 : \
518 (struct cmsghdr *)((char *)(cmsg) + \
519 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len)))
522 * RFC 2292 requires to check msg_controllen, in case that the kernel returns
523 * an empty list for some reasons.
525 #define CMSG_FIRSTHDR(mhdr) \
526 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
527 (struct cmsghdr *)(mhdr)->msg_control : \
528 (struct cmsghdr *)NULL)
531 /* RFC 2292 additions */
532 #define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l))
533 #define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l))
537 #define CMSG_ALIGN(n) _ALIGN(n)
540 /* "Socket"-level control message types: */
541 #define SCM_RIGHTS 0x01 /* access rights (array of int) */
543 #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */
544 #define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */
545 #define SCM_BINTIME 0x04 /* timestamp (struct bintime) */
550 * 4.3 compat sockaddr, move to compat file later
553 unsigned short sa_family; /* address family */
554 char sa_data[14]; /* up to 14 bytes of direct address */
558 * 4.3-compat message header (move to compat file later).
561 char *msg_name; /* optional address */
562 int msg_namelen; /* size of address */
563 struct iovec *msg_iov; /* scatter/gather array */
564 int msg_iovlen; /* # elements in msg_iov */
565 char *msg_accrights; /* access rights sent/received */
566 int msg_accrightslen;
571 * howto arguments for shutdown(2), specified by Posix.1g.
573 #define SHUT_RD 0 /* shut down the reading side */
574 #define SHUT_WR 1 /* shut down the writing side */
575 #define SHUT_RDWR 2 /* shut down both sides */
577 /* we cheat and use the SHUT_XX defines for these */
578 #define PRU_FLUSH_RD SHUT_RD
579 #define PRU_FLUSH_WR SHUT_WR
580 #define PRU_FLUSH_RDWR SHUT_RDWR
585 * sendfile(2) header/trailer struct
588 struct iovec *headers; /* pointer to an array of header struct iovec's */
589 int hdr_cnt; /* number of header iovec's */
590 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */
591 int trl_cnt; /* number of trailer iovec's */
595 * Sendfile-specific flag(s)
597 #define SF_NODISKIO 0x00000001
598 #define SF_MNOWAIT 0x00000002
599 #define SF_SYNC 0x00000004
604 #include <sys/cdefs.h>
607 int accept(int, struct sockaddr * __restrict, socklen_t * __restrict);
608 int bind(int, const struct sockaddr *, socklen_t);
609 int connect(int, const struct sockaddr *, socklen_t);
610 int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict);
611 int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict);
612 int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict);
613 int listen(int, int);
614 ssize_t recv(int, void *, size_t, int);
615 ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict);
616 ssize_t recvmsg(int, struct msghdr *, int);
617 ssize_t send(int, const void *, size_t, int);
618 ssize_t sendto(int, const void *,
619 size_t, int, const struct sockaddr *, socklen_t);
620 ssize_t sendmsg(int, const struct msghdr *, int);
622 int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int);
625 int setsockopt(int, int, int, const void *, socklen_t);
626 int shutdown(int, int);
628 int socket(int, int, int);
629 int socketpair(int, int, int, int *);
632 #endif /* !_KERNEL */
637 struct tcpcb *so_sototcpcb(struct socket *so);
638 struct inpcb *so_sotoinpcb(struct socket *so);
639 struct sockbuf *so_sockbuf_snd(struct socket *);
640 struct sockbuf *so_sockbuf_rcv(struct socket *);
642 int so_state_get(const struct socket *);
643 void so_state_set(struct socket *, int);
645 int so_options_get(const struct socket *);
646 void so_options_set(struct socket *, int);
648 int so_error_get(const struct socket *);
649 void so_error_set(struct socket *, int);
651 int so_linger_get(const struct socket *);
652 void so_linger_set(struct socket *, int);
654 struct protosw *so_protosw_get(const struct socket *);
655 void so_protosw_set(struct socket *, struct protosw *);
657 void so_sorwakeup_locked(struct socket *so);
658 void so_sowwakeup_locked(struct socket *so);
660 void so_sorwakeup(struct socket *so);
661 void so_sowwakeup(struct socket *so);
663 void so_lock(struct socket *so);
664 void so_unlock(struct socket *so);
666 void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg);
671 #endif /* !_SYS_SOCKET_H_ */