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Diffstat (limited to 'netwerk/sctp/src/user_socketvar.h')
| -rwxr-xr-x | netwerk/sctp/src/user_socketvar.h | 842 |
1 files changed, 842 insertions, 0 deletions
diff --git a/netwerk/sctp/src/user_socketvar.h b/netwerk/sctp/src/user_socketvar.h new file mode 100755 index 000000000..5c3d9eee7 --- /dev/null +++ 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_ */ |