Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 527 insertions, 0 deletions

diff --git a/netwerk/sctp/src/user_socketvar.h b/netwerk/sctp/src/user_socketvar.h
new file mode 100644
index 0000000000..e8eccc7fb1
--- /dev/null
+++ b/netwerk/sctp/src/user_socketvar.h
@@ -0,0 +1,527 @@
+/*-
+ * 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.
+ * 3. 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 <sys/socketvar.h> goes here.*/
+
+#ifndef _USER_SOCKETVAR_H_
+#define _USER_SOCKETVAR_H_
+
+#if defined(__APPLE__)
+#include <sys/types.h>
+#include <unistd.h>
+#endif
+
+/* #include <sys/selinfo.h> */ /*__Userspace__ alternative?*/	/* for struct selinfo */
+/* #include <sys/_lock.h>  was 0 byte file */
+/* #include <sys/_mutex.h> was 0 byte file */
+/* #include <sys/_sx.h> */ /*__Userspace__ alternative?*/
+#if !defined(__DragonFly__) && !defined(__FreeBSD__) && !defined(__NetBSD__) && !defined(_WIN32) && !defined(__native_client__)
+#include <sys/uio.h>
+#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(__APPLE__) || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(_WIN32) || defined(__native_client__)
+#define UIO_MAXIOV 1024
+#define ERESTART (-1)
+#endif
+
+#if !defined(__APPLE__) && !defined(__NetBSD__) && !defined(__OpenBSD__)
+enum	uio_rw { UIO_READ, UIO_WRITE };
+#endif
+
+#if !defined(__NetBSD__) && !defined(__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 */
+	ssize_t 	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(_WIN32)
+#define AF_ROUTE  17
+#if !defined(__MINGW32__)
+typedef __int32 pid_t;
+#endif
+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(_WIN32)
+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;
+#ifdef INVARIANTS
+#define	ACCEPT_LOCK()	KASSERT(pthread_mutex_lock(&accept_mtx) == 0, ("%s: accept_mtx already locked", __func__))
+#define	ACCEPT_UNLOCK()	KASSERT(pthread_mutex_unlock(&accept_mtx) == 0, ("%s: accept_mtx not locked", __func__))
+#else
+#define	ACCEPT_LOCK()   (void)pthread_mutex_lock(&accept_mtx)
+#define	ACCEPT_UNLOCK() (void)pthread_mutex_unlock(&accept_mtx)
+#endif
+#define	ACCEPT_LOCK_ASSERT() \
+          KASSERT(pthread_mutex_trylock(&accept_mtx) == EBUSY, ("%s: accept_mtx not locked", __func__))
+#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(_WIN32)
+#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
+#ifdef INVARIANTS
+#define SOCKBUF_LOCK_INIT(_sb, _name) do {                                 \
+	pthread_mutexattr_t mutex_attr;                                    \
+	                                                                   \
+	pthread_mutexattr_init(&mutex_attr);                               \
+	pthread_mutexattr_settype(&mutex_attr, PTHREAD_MUTEX_ERRORCHECK);  \
+	pthread_mutex_init(SOCKBUF_MTX(_sb), &mutex_attr);                 \
+	pthread_mutexattr_destroy(&mutex_attr);                            \
+} while (0)
+#else
+#define SOCKBUF_LOCK_INIT(_sb, _name) \
+	pthread_mutex_init(SOCKBUF_MTX(_sb), NULL)
+#endif
+#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 */
+
+/*
+ * Socket event flags
+ */
+#define SCTP_EVENT_READ		0x0001	/* socket is readable */
+#define SCTP_EVENT_WRITE	0x0002	/* socket is writeable */
+#define SCTP_EVENT_ERROR	0x0004	/* socket has an error state */
+
+
+/*-------------------------------------------------------------*/
+/*-------------------------------------------------------------*/
+/*                   __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 .
+ */
+
+/* ---------------------------------------------------------- */
+/* --- 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);
+void	sofree(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);
+extern int sctpconn_bind(struct socket *so, struct sockaddr *addr);
+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);
+extern int sctpconn_connect(struct socket *so, struct sockaddr *addr);
+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 /* !_SYS_SOCKETVAR_H_ */