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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /netwerk/sctp/src/user_socketvar.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'netwerk/sctp/src/user_socketvar.h')
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1 files changed, 842 insertions, 0 deletions
diff --git a/netwerk/sctp/src/user_socketvar.h b/netwerk/sctp/src/user_socketvar.h
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index 000000000..5c3d9eee7
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+++ b/netwerk/sctp/src/user_socketvar.h
@@ -0,0 +1,842 @@
+/*-
+ * 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 <sys/socketvar.h> goes here.*/
+
+#ifndef _USER_SOCKETVAR_H_
+#define _USER_SOCKETVAR_H_
+
+#if defined(__Userspace_os_Darwin)
+#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(__Userspace_os_DragonFly) && !defined(__Userspace_os_FreeBSD) && !defined(__Userspace_os_NetBSD) && !defined(__Userspace_os_Windows) && !defined(__Userspace_os_NaCl)
+#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(__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_ */