/*- * Copyright (c) 1982, 1986, 1990, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ /* __Userspace__ version of goes here.*/ #ifndef _USER_SOCKETVAR_H_ #define _USER_SOCKETVAR_H_ #if defined(__Userspace_os_Darwin) #include #include #endif /* #include */ /*__Userspace__ alternative?*/ /* for struct selinfo */ /* #include was 0 byte file */ /* #include was 0 byte file */ /* #include */ /*__Userspace__ alternative?*/ #if !defined(__Userspace_os_DragonFly) && !defined(__Userspace_os_FreeBSD) && !defined(__Userspace_os_NetBSD) && !defined(__Userspace_os_Windows) && !defined(__Userspace_os_NaCl) #include #endif #define SOCK_MAXADDRLEN 255 #if !defined(MSG_NOTIFICATION) #define MSG_NOTIFICATION 0x2000 /* SCTP notification */ #endif #define SCTP_SO_LINGER 0x0001 #define SCTP_SO_ACCEPTCONN 0x0002 #define SS_CANTRCVMORE 0x020 #define SS_CANTSENDMORE 0x010 #if defined(__Userspace_os_Darwin) || defined(__Userspace_os_DragonFly) || defined(__Userspace_os_FreeBSD) || defined(__Userspace_os_OpenBSD) || defined (__Userspace_os_Windows) || defined(__Userspace_os_NaCl) #define UIO_MAXIOV 1024 #define ERESTART (-1) #endif #if !defined(__Userspace_os_Darwin) && !defined(__Userspace_os_NetBSD) && !defined(__Userspace_os_OpenBSD) enum uio_rw { UIO_READ, UIO_WRITE }; #endif #if !defined(__Userspace_os_NetBSD) && !defined(__Userspace_os_OpenBSD) /* Segment flag values. */ enum uio_seg { UIO_USERSPACE, /* from user data space */ UIO_SYSSPACE /* from system space */ }; #endif struct proc { int stub; /* struct proc is a dummy for __Userspace__ */ }; MALLOC_DECLARE(M_ACCF); MALLOC_DECLARE(M_PCB); MALLOC_DECLARE(M_SONAME); /* __Userspace__ Are these all the fields we need? * Removing struct thread *uio_td; owner field */ struct uio { struct iovec *uio_iov; /* scatter/gather list */ int uio_iovcnt; /* length of scatter/gather list */ off_t uio_offset; /* offset in target object */ int uio_resid; /* remaining bytes to process */ enum uio_seg uio_segflg; /* address space */ enum uio_rw uio_rw; /* operation */ }; /* __Userspace__ */ /* * Kernel structure per socket. * Contains send and receive buffer queues, * handle on protocol and pointer to protocol * private data and error information. */ #if defined (__Userspace_os_Windows) #define AF_ROUTE 17 typedef __int32 pid_t; typedef unsigned __int32 uid_t; enum sigType { SIGNAL = 0, BROADCAST = 1, MAX_EVENTS = 2 }; #endif /*- * Locking key to struct socket: * (a) constant after allocation, no locking required. * (b) locked by SOCK_LOCK(so). * (c) locked by SOCKBUF_LOCK(&so->so_rcv). * (d) locked by SOCKBUF_LOCK(&so->so_snd). * (e) locked by ACCEPT_LOCK(). * (f) not locked since integer reads/writes are atomic. * (g) used only as a sleep/wakeup address, no value. * (h) locked by global mutex so_global_mtx. */ struct socket { int so_count; /* (b) reference count */ short so_type; /* (a) generic type, see socket.h */ short so_options; /* from socket call, see socket.h */ short so_linger; /* time to linger while closing */ short so_state; /* (b) internal state flags SS_* */ int so_qstate; /* (e) internal state flags SQ_* */ void *so_pcb; /* protocol control block */ int so_dom; /* * Variables for connection queuing. * Socket where accepts occur is so_head in all subsidiary sockets. * If so_head is 0, socket is not related to an accept. * For head socket so_incomp queues partially completed connections, * while so_comp is a queue of connections ready to be accepted. * If a connection is aborted and it has so_head set, then * it has to be pulled out of either so_incomp or so_comp. * We allow connections to queue up based on current queue lengths * and limit on number of queued connections for this socket. */ struct socket *so_head; /* (e) back pointer to listen socket */ TAILQ_HEAD(, socket) so_incomp; /* (e) queue of partial unaccepted connections */ TAILQ_HEAD(, socket) so_comp; /* (e) queue of complete unaccepted connections */ TAILQ_ENTRY(socket) so_list; /* (e) list of unaccepted connections */ u_short so_qlen; /* (e) number of unaccepted connections */ u_short so_incqlen; /* (e) number of unaccepted incomplete connections */ u_short so_qlimit; /* (e) max number queued connections */ short so_timeo; /* (g) connection timeout */ userland_cond_t timeo_cond; /* timeo_cond condition variable being used in wakeup */ u_short so_error; /* (f) error affecting connection */ struct sigio *so_sigio; /* [sg] information for async I/O or out of band data (SIGURG) */ u_long so_oobmark; /* (c) chars to oob mark */ TAILQ_HEAD(, aiocblist) so_aiojobq; /* AIO ops waiting on socket */ /* * Variables for socket buffering. */ struct sockbuf { /* __Userspace__ Many of these fields may * not be required for the sctp stack. * Commenting out the following. * Including pthread mutex and condition variable to be * used by sbwait, sorwakeup and sowwakeup. */ /* struct selinfo sb_sel;*/ /* process selecting read/write */ /* struct mtx sb_mtx;*/ /* sockbuf lock */ /* struct sx sb_sx;*/ /* prevent I/O interlacing */ userland_cond_t sb_cond; /* sockbuf condition variable */ userland_mutex_t sb_mtx; /* sockbuf lock associated with sb_cond */ short sb_state; /* (c/d) socket state on sockbuf */ #define sb_startzero sb_mb struct mbuf *sb_mb; /* (c/d) the mbuf chain */ struct mbuf *sb_mbtail; /* (c/d) the last mbuf in the chain */ struct mbuf *sb_lastrecord; /* (c/d) first mbuf of last * record in socket buffer */ struct mbuf *sb_sndptr; /* (c/d) pointer into mbuf chain */ u_int sb_sndptroff; /* (c/d) byte offset of ptr into chain */ u_int sb_cc; /* (c/d) actual chars in buffer */ u_int sb_hiwat; /* (c/d) max actual char count */ u_int sb_mbcnt; /* (c/d) chars of mbufs used */ u_int sb_mbmax; /* (c/d) max chars of mbufs to use */ u_int sb_ctl; /* (c/d) non-data chars in buffer */ int sb_lowat; /* (c/d) low water mark */ int sb_timeo; /* (c/d) timeout for read/write */ short sb_flags; /* (c/d) flags, see below */ } so_rcv, so_snd; /* * Constants for sb_flags field of struct sockbuf. */ #define SB_MAX (256*1024) /* default for max chars in sockbuf */ #define SB_RAW (64*1024*2) /*Aligning so->so_rcv.sb_hiwat with the receive buffer size of raw socket*/ /* * Constants for sb_flags field of struct sockbuf. */ #define SB_WAIT 0x04 /* someone is waiting for data/space */ #define SB_SEL 0x08 /* someone is selecting */ #define SB_ASYNC 0x10 /* ASYNC I/O, need signals */ #define SB_UPCALL 0x20 /* someone wants an upcall */ #define SB_NOINTR 0x40 /* operations not interruptible */ #define SB_AIO 0x80 /* AIO operations queued */ #define SB_KNOTE 0x100 /* kernel note attached */ #define SB_AUTOSIZE 0x800 /* automatically size socket buffer */ void (*so_upcall)(struct socket *, void *, int); void *so_upcallarg; struct ucred *so_cred; /* (a) user credentials */ struct label *so_label; /* (b) MAC label for socket */ struct label *so_peerlabel; /* (b) cached MAC label for peer */ /* NB: generation count must not be first. */ uint32_t so_gencnt; /* (h) generation count */ void *so_emuldata; /* (b) private data for emulators */ struct so_accf { struct accept_filter *so_accept_filter; void *so_accept_filter_arg; /* saved filter args */ char *so_accept_filter_str; /* saved user args */ } *so_accf; }; #define SB_EMPTY_FIXUP(sb) do { \ if ((sb)->sb_mb == NULL) { \ (sb)->sb_mbtail = NULL; \ (sb)->sb_lastrecord = NULL; \ } \ } while (/*CONSTCOND*/0) /* * Global accept mutex to serialize access to accept queues and * fields associated with multiple sockets. This allows us to * avoid defining a lock order between listen and accept sockets * until such time as it proves to be a good idea. */ #if defined(__Userspace_os_Windows) extern userland_mutex_t accept_mtx; extern userland_cond_t accept_cond; #define ACCEPT_LOCK_ASSERT() #define ACCEPT_LOCK() do { \ EnterCriticalSection(&accept_mtx); \ } while (0) #define ACCEPT_UNLOCK() do { \ LeaveCriticalSection(&accept_mtx); \ } while (0) #define ACCEPT_UNLOCK_ASSERT() #else extern userland_mutex_t accept_mtx; extern userland_cond_t accept_cond; #define ACCEPT_LOCK_ASSERT() KASSERT(pthread_mutex_trylock(&accept_mtx) == EBUSY, ("%s: accept_mtx not locked", __func__)) #define ACCEPT_LOCK() (void)pthread_mutex_lock(&accept_mtx) #define ACCEPT_UNLOCK() (void)pthread_mutex_unlock(&accept_mtx) #define ACCEPT_UNLOCK_ASSERT() do{ \ KASSERT(pthread_mutex_trylock(&accept_mtx) == 0, ("%s: accept_mtx locked", __func__)); \ (void)pthread_mutex_unlock(&accept_mtx); \ } while (0) #endif /* * Per-socket buffer mutex used to protect most fields in the socket * buffer. */ #define SOCKBUF_MTX(_sb) (&(_sb)->sb_mtx) #if defined (__Userspace_os_Windows) #define SOCKBUF_LOCK_INIT(_sb, _name) \ InitializeCriticalSection(SOCKBUF_MTX(_sb)) #define SOCKBUF_LOCK_DESTROY(_sb) DeleteCriticalSection(SOCKBUF_MTX(_sb)) #define SOCKBUF_COND_INIT(_sb) InitializeConditionVariable((&(_sb)->sb_cond)) #define SOCKBUF_COND_DESTROY(_sb) DeleteConditionVariable((&(_sb)->sb_cond)) #define SOCK_COND_INIT(_so) InitializeConditionVariable((&(_so)->timeo_cond)) #define SOCK_COND_DESTROY(_so) DeleteConditionVariable((&(_so)->timeo_cond)) #define SOCK_COND(_so) (&(_so)->timeo_cond) #else #define SOCKBUF_LOCK_INIT(_sb, _name) \ pthread_mutex_init(SOCKBUF_MTX(_sb), NULL) #define SOCKBUF_LOCK_DESTROY(_sb) pthread_mutex_destroy(SOCKBUF_MTX(_sb)) #define SOCKBUF_COND_INIT(_sb) pthread_cond_init((&(_sb)->sb_cond), NULL) #define SOCKBUF_COND_DESTROY(_sb) pthread_cond_destroy((&(_sb)->sb_cond)) #define SOCK_COND_INIT(_so) pthread_cond_init((&(_so)->timeo_cond), NULL) #define SOCK_COND_DESTROY(_so) pthread_cond_destroy((&(_so)->timeo_cond)) #define SOCK_COND(_so) (&(_so)->timeo_cond) #endif /*__Userspace__ SOCKBUF_LOCK(_sb) is now defined in netinet/sctp_process_lock.h */ /* #define SOCKBUF_OWNED(_sb) mtx_owned(SOCKBUF_MTX(_sb)) unused */ /*__Userspace__ SOCKBUF_UNLOCK(_sb) is now defined in netinet/sctp_process_lock.h */ /*__Userspace__ SOCKBUF_LOCK_ASSERT(_sb) is now defined in netinet/sctp_process_lock.h */ /* #define SOCKBUF_UNLOCK_ASSERT(_sb) mtx_assert(SOCKBUF_MTX(_sb), MA_NOTOWNED) unused */ /* * Per-socket mutex: we reuse the receive socket buffer mutex for space * efficiency. This decision should probably be revisited as we optimize * locking for the socket code. */ #define SOCK_MTX(_so) SOCKBUF_MTX(&(_so)->so_rcv) /*__Userspace__ SOCK_LOCK(_so) is now defined in netinet/sctp_process_lock.h */ /* #define SOCK_OWNED(_so) SOCKBUF_OWNED(&(_so)->so_rcv) unused */ /*__Userspace__ SOCK_UNLOCK(_so) is now defined in netinet/sctp_process_lock.h */ #define SOCK_LOCK_ASSERT(_so) SOCKBUF_LOCK_ASSERT(&(_so)->so_rcv) /* * Socket state bits. * * Historically, this bits were all kept in the so_state field. For * locking reasons, they are now in multiple fields, as they are * locked differently. so_state maintains basic socket state protected * by the socket lock. so_qstate holds information about the socket * accept queues. Each socket buffer also has a state field holding * information relevant to that socket buffer (can't send, rcv). Many * fields will be read without locks to improve performance and avoid * lock order issues. However, this approach must be used with caution. */ #define SS_NOFDREF 0x0001 /* no file table ref any more */ #define SS_ISCONNECTED 0x0002 /* socket connected to a peer */ #define SS_ISCONNECTING 0x0004 /* in process of connecting to peer */ #define SS_ISDISCONNECTING 0x0008 /* in process of disconnecting */ #define SS_NBIO 0x0100 /* non-blocking ops */ #define SS_ASYNC 0x0200 /* async i/o notify */ #define SS_ISCONFIRMING 0x0400 /* deciding to accept connection req */ #define SS_ISDISCONNECTED 0x2000 /* socket disconnected from peer */ /* * Protocols can mark a socket as SS_PROTOREF to indicate that, following * pru_detach, they still want the socket to persist, and will free it * themselves when they are done. Protocols should only ever call sofree() * following setting this flag in pru_detach(), and never otherwise, as * sofree() bypasses socket reference counting. */ #define SS_PROTOREF 0x4000 /* strong protocol reference */ /* * Socket state bits now stored in the socket buffer state field. */ #define SBS_CANTSENDMORE 0x0010 /* can't send more data to peer */ #define SBS_CANTRCVMORE 0x0020 /* can't receive more data from peer */ #define SBS_RCVATMARK 0x0040 /* at mark on input */ /* * Socket state bits stored in so_qstate. */ #define SQ_INCOMP 0x0800 /* unaccepted, incomplete connection */ #define SQ_COMP 0x1000 /* unaccepted, complete connection */ /* * Externalized form of struct socket used by the sysctl(3) interface. */ struct xsocket { size_t xso_len; /* length of this structure */ struct socket *xso_so; /* makes a convenient handle sometimes */ short so_type; short so_options; short so_linger; short so_state; caddr_t so_pcb; /* another convenient handle */ int xso_protocol; int xso_family; u_short so_qlen; u_short so_incqlen; u_short so_qlimit; short so_timeo; u_short so_error; pid_t so_pgid; u_long so_oobmark; struct xsockbuf { u_int sb_cc; u_int sb_hiwat; u_int sb_mbcnt; u_int sb_mbmax; int sb_lowat; int sb_timeo; short sb_flags; } so_rcv, so_snd; uid_t so_uid; /* XXX */ }; #if defined(_KERNEL) /* * Macros for sockets and socket buffering. */ /* * Do we need to notify the other side when I/O is possible? */ #define sb_notify(sb) (((sb)->sb_flags & (SB_WAIT | SB_SEL | SB_ASYNC | \ SB_UPCALL | SB_AIO | SB_KNOTE)) != 0) /* * How much space is there in a socket buffer (so->so_snd or so->so_rcv)? * This is problematical if the fields are unsigned, as the space might * still be negative (cc > hiwat or mbcnt > mbmax). Should detect * overflow and return 0. Should use "lmin" but it doesn't exist now. */ #define sbspace(sb) \ ((long) imin((int)((sb)->sb_hiwat - (sb)->sb_cc), \ (int)((sb)->sb_mbmax - (sb)->sb_mbcnt))) /* do we have to send all at once on a socket? */ #define sosendallatonce(so) \ ((so)->so_proto->pr_flags & PR_ATOMIC) /* can we read something from so? */ #define soreadable(so) \ ((so)->so_rcv.sb_cc >= (so)->so_rcv.sb_lowat || \ ((so)->so_rcv.sb_state & SBS_CANTRCVMORE) || \ !TAILQ_EMPTY(&(so)->so_comp) || (so)->so_error) /* can we write something to so? */ #define sowriteable(so) \ ((sbspace(&(so)->so_snd) >= (so)->so_snd.sb_lowat && \ (((so)->so_state&SS_ISCONNECTED) || \ ((so)->so_proto->pr_flags&PR_CONNREQUIRED)==0)) || \ ((so)->so_snd.sb_state & SBS_CANTSENDMORE) || \ (so)->so_error) /* adjust counters in sb reflecting allocation of m */ #define sballoc(sb, m) { \ (sb)->sb_cc += (m)->m_len; \ if ((m)->m_type != MT_DATA && (m)->m_type != MT_OOBDATA) \ (sb)->sb_ctl += (m)->m_len; \ (sb)->sb_mbcnt += MSIZE; \ if ((m)->m_flags & M_EXT) \ (sb)->sb_mbcnt += (m)->m_ext.ext_size; \ } /* adjust counters in sb reflecting freeing of m */ #define sbfree(sb, m) { \ (sb)->sb_cc -= (m)->m_len; \ if ((m)->m_type != MT_DATA && (m)->m_type != MT_OOBDATA) \ (sb)->sb_ctl -= (m)->m_len; \ (sb)->sb_mbcnt -= MSIZE; \ if ((m)->m_flags & M_EXT) \ (sb)->sb_mbcnt -= (m)->m_ext.ext_size; \ if ((sb)->sb_sndptr == (m)) { \ (sb)->sb_sndptr = NULL; \ (sb)->sb_sndptroff = 0; \ } \ if ((sb)->sb_sndptroff != 0) \ (sb)->sb_sndptroff -= (m)->m_len; \ } /* * soref()/sorele() ref-count the socket structure. Note that you must * still explicitly close the socket, but the last ref count will free * the structure. */ #define soref(so) do { \ SOCK_LOCK_ASSERT(so); \ ++(so)->so_count; \ } while (0) #define sorele(so) do { \ ACCEPT_LOCK_ASSERT(); \ SOCK_LOCK_ASSERT(so); \ KASSERT((so)->so_count > 0, ("sorele")); \ if (--(so)->so_count == 0) \ sofree(so); \ else { \ SOCK_UNLOCK(so); \ ACCEPT_UNLOCK(); \ } \ } while (0) #define sotryfree(so) do { \ ACCEPT_LOCK_ASSERT(); \ SOCK_LOCK_ASSERT(so); \ if ((so)->so_count == 0) \ sofree(so); \ else { \ SOCK_UNLOCK(so); \ ACCEPT_UNLOCK(); \ } \ } while(0) /* * In sorwakeup() and sowwakeup(), acquire the socket buffer lock to * avoid a non-atomic test-and-wakeup. However, sowakeup is * responsible for releasing the lock if it is called. We unlock only * if we don't call into sowakeup. If any code is introduced that * directly invokes the underlying sowakeup() primitives, it must * maintain the same semantics. */ #define sorwakeup_locked(so) do { \ SOCKBUF_LOCK_ASSERT(&(so)->so_rcv); \ if (sb_notify(&(so)->so_rcv)) \ sowakeup((so), &(so)->so_rcv); \ else \ SOCKBUF_UNLOCK(&(so)->so_rcv); \ } while (0) #define sorwakeup(so) do { \ SOCKBUF_LOCK(&(so)->so_rcv); \ sorwakeup_locked(so); \ } while (0) #define sowwakeup_locked(so) do { \ SOCKBUF_LOCK_ASSERT(&(so)->so_snd); \ if (sb_notify(&(so)->so_snd)) \ sowakeup((so), &(so)->so_snd); \ else \ SOCKBUF_UNLOCK(&(so)->so_snd); \ } while (0) #define sowwakeup(so) do { \ SOCKBUF_LOCK(&(so)->so_snd); \ sowwakeup_locked(so); \ } while (0) /* * Argument structure for sosetopt et seq. This is in the KERNEL * section because it will never be visible to user code. */ enum sopt_dir { SOPT_GET, SOPT_SET }; struct sockopt { enum sopt_dir sopt_dir; /* is this a get or a set? */ int sopt_level; /* second arg of [gs]etsockopt */ int sopt_name; /* third arg of [gs]etsockopt */ void *sopt_val; /* fourth arg of [gs]etsockopt */ size_t sopt_valsize; /* (almost) fifth arg of [gs]etsockopt */ struct thread *sopt_td; /* calling thread or null if kernel */ }; struct accept_filter { char accf_name[16]; void (*accf_callback) (struct socket *so, void *arg, int waitflag); void * (*accf_create) (struct socket *so, char *arg); void (*accf_destroy) (struct socket *so); SLIST_ENTRY(accept_filter) accf_next; }; extern int maxsockets; extern u_long sb_max; extern struct uma_zone *socket_zone; extern so_gen_t so_gencnt; struct mbuf; struct sockaddr; struct ucred; struct uio; /* * From uipc_socket and friends */ int do_getopt_accept_filter(struct socket *so, struct sockopt *sopt); int do_setopt_accept_filter(struct socket *so, struct sockopt *sopt); int so_setsockopt(struct socket *so, int level, int optname, void *optval, size_t optlen); int sockargs(struct mbuf **mp, caddr_t buf, int buflen, int type); int getsockaddr(struct sockaddr **namp, caddr_t uaddr, size_t len); void sbappend(struct sockbuf *sb, struct mbuf *m); void sbappend_locked(struct sockbuf *sb, struct mbuf *m); void sbappendstream(struct sockbuf *sb, struct mbuf *m); void sbappendstream_locked(struct sockbuf *sb, struct mbuf *m); int sbappendaddr(struct sockbuf *sb, const struct sockaddr *asa, struct mbuf *m0, struct mbuf *control); int sbappendaddr_locked(struct sockbuf *sb, const struct sockaddr *asa, struct mbuf *m0, struct mbuf *control); int sbappendcontrol(struct sockbuf *sb, struct mbuf *m0, struct mbuf *control); int sbappendcontrol_locked(struct sockbuf *sb, struct mbuf *m0, struct mbuf *control); void sbappendrecord(struct sockbuf *sb, struct mbuf *m0); void sbappendrecord_locked(struct sockbuf *sb, struct mbuf *m0); void sbcheck(struct sockbuf *sb); void sbcompress(struct sockbuf *sb, struct mbuf *m, struct mbuf *n); struct mbuf * sbcreatecontrol(caddr_t p, int size, int type, int level); void sbdestroy(struct sockbuf *sb, struct socket *so); void sbdrop(struct sockbuf *sb, int len); void sbdrop_locked(struct sockbuf *sb, int len); void sbdroprecord(struct sockbuf *sb); void sbdroprecord_locked(struct sockbuf *sb); void sbflush(struct sockbuf *sb); void sbflush_locked(struct sockbuf *sb); void sbrelease(struct sockbuf *sb, struct socket *so); void sbrelease_locked(struct sockbuf *sb, struct socket *so); int sbreserve(struct sockbuf *sb, u_long cc, struct socket *so, struct thread *td); int sbreserve_locked(struct sockbuf *sb, u_long cc, struct socket *so, struct thread *td); struct mbuf * sbsndptr(struct sockbuf *sb, u_int off, u_int len, u_int *moff); void sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb); int sbwait(struct sockbuf *sb); int sblock(struct sockbuf *sb, int flags); void sbunlock(struct sockbuf *sb); void soabort(struct socket *so); int soaccept(struct socket *so, struct sockaddr **nam); int socheckuid(struct socket *so, uid_t uid); int sobind(struct socket *so, struct sockaddr *nam, struct thread *td); void socantrcvmore(struct socket *so); void socantrcvmore_locked(struct socket *so); void socantsendmore(struct socket *so); void socantsendmore_locked(struct socket *so); int soclose(struct socket *so); int soconnect(struct socket *so, struct sockaddr *nam, struct thread *td); int soconnect2(struct socket *so1, struct socket *so2); int socow_setup(struct mbuf *m0, struct uio *uio); int socreate(int dom, struct socket **aso, int type, int proto, struct ucred *cred, struct thread *td); int sodisconnect(struct socket *so); struct sockaddr *sodupsockaddr(const struct sockaddr *sa, int mflags); void sofree(struct socket *so); int sogetopt(struct socket *so, struct sockopt *sopt); void sohasoutofband(struct socket *so); void soisconnected(struct socket *so); void soisconnecting(struct socket *so); void soisdisconnected(struct socket *so); void soisdisconnecting(struct socket *so); int solisten(struct socket *so, int backlog, struct thread *td); void solisten_proto(struct socket *so, int backlog); int solisten_proto_check(struct socket *so); struct socket * sonewconn(struct socket *head, int connstatus); int sooptcopyin(struct sockopt *sopt, void *buf, size_t len, size_t minlen); int sooptcopyout(struct sockopt *sopt, const void *buf, size_t len); /* XXX; prepare mbuf for (__FreeBSD__ < 3) routines. */ int soopt_getm(struct sockopt *sopt, struct mbuf **mp); int soopt_mcopyin(struct sockopt *sopt, struct mbuf *m); int soopt_mcopyout(struct sockopt *sopt, struct mbuf *m); int sopoll(struct socket *so, int events, struct ucred *active_cred, struct thread *td); int sopoll_generic(struct socket *so, int events, struct ucred *active_cred, struct thread *td); int soreceive(struct socket *so, struct sockaddr **paddr, struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp); int soreceive_generic(struct socket *so, struct sockaddr **paddr, struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp); int soreserve(struct socket *so, u_long sndcc, u_long rcvcc); void sorflush(struct socket *so); int sosend(struct socket *so, struct sockaddr *addr, struct uio *uio, struct mbuf *top, struct mbuf *control, int flags, struct thread *td); int sosend_dgram(struct socket *so, struct sockaddr *addr, struct uio *uio, struct mbuf *top, struct mbuf *control, int flags, struct thread *td); int sosend_generic(struct socket *so, struct sockaddr *addr, struct uio *uio, struct mbuf *top, struct mbuf *control, int flags, struct thread *td); int sosetopt(struct socket *so, struct sockopt *sopt); int soshutdown(struct socket *so, int how); void sotoxsocket(struct socket *so, struct xsocket *xso); void sowakeup(struct socket *so, struct sockbuf *sb); #ifdef SOCKBUF_DEBUG void sblastrecordchk(struct sockbuf *, const char *, int); #define SBLASTRECORDCHK(sb) sblastrecordchk((sb), __FILE__, __LINE__) void sblastmbufchk(struct sockbuf *, const char *, int); #define SBLASTMBUFCHK(sb) sblastmbufchk((sb), __FILE__, __LINE__) #else #define SBLASTRECORDCHK(sb) /* nothing */ #define SBLASTMBUFCHK(sb) /* nothing */ #endif /* SOCKBUF_DEBUG */ /* * Accept filter functions (duh). */ int accept_filt_add(struct accept_filter *filt); int accept_filt_del(char *name); struct accept_filter *accept_filt_get(char *name); #ifdef ACCEPT_FILTER_MOD #ifdef SYSCTL_DECL SYSCTL_DECL(_net_inet_accf); #endif int accept_filt_generic_mod_event(module_t mod, int event, void *data); #endif #endif /* _KERNEL */ /*-------------------------------------------------------------*/ /*-------------------------------------------------------------*/ /* __Userspace__ */ /*-------------------------------------------------------------*/ /*-------------------------------------------------------------*/ /* this new __Userspace__ section is to copy portions of the _KERNEL block * above into, avoiding having to port the entire thing at once... * For function prototypes, the full bodies are in user_socket.c . */ #if defined(__Userspace__) /* ---------------------------------------------------------- */ /* --- function prototypes (implemented in user_socket.c) --- */ /* ---------------------------------------------------------- */ void soisconnecting(struct socket *so); void soisdisconnecting(struct socket *so); void soisconnected(struct socket *so); struct socket * sonewconn(struct socket *head, int connstatus); void socantrcvmore(struct socket *so); void socantsendmore(struct socket *so); /* -------------- */ /* --- macros --- */ /* -------------- */ #define soref(so) do { \ SOCK_LOCK_ASSERT(so); \ ++(so)->so_count; \ } while (0) #define sorele(so) do { \ ACCEPT_LOCK_ASSERT(); \ SOCK_LOCK_ASSERT(so); \ KASSERT((so)->so_count > 0, ("sorele")); \ if (--(so)->so_count == 0) \ sofree(so); \ else { \ SOCK_UNLOCK(so); \ ACCEPT_UNLOCK(); \ } \ } while (0) /* replacing imin with min (user_environment.h) */ #define sbspace(sb) \ ((long) min((int)((sb)->sb_hiwat - (sb)->sb_cc), \ (int)((sb)->sb_mbmax - (sb)->sb_mbcnt))) /* do we have to send all at once on a socket? */ #define sosendallatonce(so) \ ((so)->so_proto->pr_flags & PR_ATOMIC) /* can we read something from so? */ #define soreadable(so) \ ((int)((so)->so_rcv.sb_cc) >= (so)->so_rcv.sb_lowat || \ ((so)->so_rcv.sb_state & SBS_CANTRCVMORE) || \ !TAILQ_EMPTY(&(so)->so_comp) || (so)->so_error) #if 0 /* original */ #define PR_CONNREQUIRED 0x04 /* from sys/protosw.h "needed" for sowriteable */ #define sowriteable(so) \ ((sbspace(&(so)->so_snd) >= (so)->so_snd.sb_lowat && \ (((so)->so_state&SS_ISCONNECTED) || \ ((so)->so_proto->pr_flags&PR_CONNREQUIRED)==0)) || \ ((so)->so_snd.sb_state & SBS_CANTSENDMORE) || \ (so)->so_error) #else /* line with PR_CONNREQUIRED removed */ /* can we write something to so? */ #define sowriteable(so) \ ((sbspace(&(so)->so_snd) >= (so)->so_snd.sb_lowat && \ (((so)->so_state&SS_ISCONNECTED))) || \ ((so)->so_snd.sb_state & SBS_CANTSENDMORE) || \ (so)->so_error) #endif extern void solisten_proto(struct socket *so, int backlog); extern int solisten_proto_check(struct socket *so); extern int sctp_listen(struct socket *so, int backlog, struct proc *p); extern void socantrcvmore_locked(struct socket *so); extern int sctp_bind(struct socket *so, struct sockaddr *addr); extern int sctp6_bind(struct socket *so, struct sockaddr *addr, void *proc); #if defined(__Userspace__) extern int sctpconn_bind(struct socket *so, struct sockaddr *addr); #endif extern int sctp_accept(struct socket *so, struct sockaddr **addr); extern int sctp_attach(struct socket *so, int proto, uint32_t vrf_id); extern int sctp6_attach(struct socket *so, int proto, uint32_t vrf_id); extern int sctp_abort(struct socket *so); extern int sctp6_abort(struct socket *so); extern void sctp_close(struct socket *so); extern int soaccept(struct socket *so, struct sockaddr **nam); extern int solisten(struct socket *so, int backlog); extern int soreserve(struct socket *so, u_long sndcc, u_long rcvcc); extern void sowakeup(struct socket *so, struct sockbuf *sb); extern void wakeup(void *ident, struct socket *so); /*__Userspace__ */ extern int uiomove(void *cp, int n, struct uio *uio); extern int sbwait(struct sockbuf *sb); extern int sodisconnect(struct socket *so); extern int soconnect(struct socket *so, struct sockaddr *nam); extern int sctp_disconnect(struct socket *so); extern int sctp_connect(struct socket *so, struct sockaddr *addr); extern int sctp6_connect(struct socket *so, struct sockaddr *addr); #if defined(__Userspace__) extern int sctpconn_connect(struct socket *so, struct sockaddr *addr); #endif extern void sctp_finish(void); /* ------------------------------------------------ */ /* ----- macros copied from above ---- */ /* ------------------------------------------------ */ /* * Do we need to notify the other side when I/O is possible? */ #define sb_notify(sb) (((sb)->sb_flags & (SB_WAIT | SB_SEL | SB_ASYNC | \ SB_UPCALL | SB_AIO | SB_KNOTE)) != 0) /* * In sorwakeup() and sowwakeup(), acquire the socket buffer lock to * avoid a non-atomic test-and-wakeup. However, sowakeup is * responsible for releasing the lock if it is called. We unlock only * if we don't call into sowakeup. If any code is introduced that * directly invokes the underlying sowakeup() primitives, it must * maintain the same semantics. */ #define sorwakeup_locked(so) do { \ SOCKBUF_LOCK_ASSERT(&(so)->so_rcv); \ if (sb_notify(&(so)->so_rcv)) \ sowakeup((so), &(so)->so_rcv); \ else \ SOCKBUF_UNLOCK(&(so)->so_rcv); \ } while (0) #define sorwakeup(so) do { \ SOCKBUF_LOCK(&(so)->so_rcv); \ sorwakeup_locked(so); \ } while (0) #define sowwakeup_locked(so) do { \ SOCKBUF_LOCK_ASSERT(&(so)->so_snd); \ if (sb_notify(&(so)->so_snd)) \ sowakeup((so), &(so)->so_snd); \ else \ SOCKBUF_UNLOCK(&(so)->so_snd); \ } while (0) #define sowwakeup(so) do { \ SOCKBUF_LOCK(&(so)->so_snd); \ sowwakeup_locked(so); \ } while (0) #endif /* __Userspace__ */ #endif /* !_SYS_SOCKETVAR_H_ */