URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [sys/] [socketvar.h] - Rev 857
Go to most recent revision | Compare with Previous | Blame | View Log
/*- * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 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. * * @(#)socketvar.h 8.3 (Berkeley) 2/19/95 * $Id: socketvar.h,v 1.2 2001-09-27 12:02:00 chris Exp $ */ #ifndef _SYS_SOCKETVAR_H_ #define _SYS_SOCKETVAR_H_ #include <sys/queue.h> /* for TAILQ macros */ #include <sys/select.h> /* for struct selinfo */ /* * Kernel structure per socket. * Contains send and receive buffer queues, * handle on protocol and pointer to protocol * private data and error information. */ struct socket { short so_type; /* 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; /* internal state flags SS_*, below */ caddr_t so_pcb; /* protocol control block */ struct protosw *so_proto; /* protocol handle */ /* * 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_q0 queues partially completed connections, * while so_q 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_q0 or so_q. * 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; /* back pointer to accept socket */ TAILQ_HEAD(, socket) so_incomp; /* queue of partial unaccepted connections */ TAILQ_HEAD(, socket) so_comp; /* queue of complete unaccepted connections */ TAILQ_ENTRY(socket) so_list; /* list of unaccepted connections */ short so_qlen; /* number of unaccepted connections */ short so_incqlen; /* number of unaccepted incomplete connections */ short so_qlimit; /* max number queued connections */ u_long so_timeo; /* connection timeout */ u_short so_error; /* error affecting connection */ pid_t so_pgid; /* pgid for signals */ u_long so_oobmark; /* chars to oob mark */ /* * Variables for socket buffering. */ struct sockbuf { u_long sb_cc; /* actual chars in buffer */ u_long sb_hiwat; /* max actual char count */ u_long sb_mbcnt; /* chars of mbufs used */ u_long sb_mbmax; /* max chars of mbufs to use */ long sb_lowat; /* low water mark */ struct mbuf *sb_mb; /* the mbuf chain */ struct selinfo sb_sel; /* process selecting read/write */ short sb_flags; /* flags, see below */ u_long sb_timeo; /* timeout for read/write */ void (*sb_wakeup) __P((struct socket *, caddr_t)); caddr_t sb_wakeuparg; /* arg for above */ } so_rcv, so_snd; #define SB_MAX (256*1024) /* default for max chars in sockbuf */ #define SB_LOCK 0x01 /* lock on data queue */ #define SB_WANT 0x02 /* someone is waiting to lock */ #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_NOTIFY (SB_WAIT|SB_SEL|SB_ASYNC) #define SB_NOINTR 0x40 /* operations not interruptible */ caddr_t so_tpcb; /* Wisc. protocol control block XXX */ void (*so_upcall) __P((struct socket *so, caddr_t arg, int waitf)); caddr_t so_upcallarg; /* Arg for above */ uid_t so_uid; /* who opened the socket */ }; /* * Socket state bits. */ #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_CANTSENDMORE 0x0010 /* can't send more data to peer */ #define SS_CANTRCVMORE 0x0020 /* can't receive more data from peer */ #define SS_RCVATMARK 0x0040 /* at mark on input */ #define SS_PRIV 0x0080 /* privileged for broadcast, raw... */ #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_INCOMP 0x0800 /* unaccepted, incomplete connection */ #define SS_COMP 0x1000 /* unaccepted, complete connection */ /* * Macros for sockets and socket buffering. */ /* * 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_state & SS_CANTRCVMORE) || \ (so)->so_comp.tqh_first || (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_state & SS_CANTSENDMORE) || \ (so)->so_error) /* adjust counters in sb reflecting allocation of m */ #define sballoc(sb, m) { \ (sb)->sb_cc += (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; \ (sb)->sb_mbcnt -= MSIZE; \ if ((m)->m_flags & M_EXT) \ (sb)->sb_mbcnt -= (m)->m_ext.ext_size; \ } /* * Set lock on sockbuf sb; sleep if lock is already held. * Unless SB_NOINTR is set on sockbuf, sleep is interruptible. * Returns error without lock if sleep is interrupted. */ #define sblock(sb, wf) ((sb)->sb_flags & SB_LOCK ? \ (((wf) == M_WAITOK) ? sb_lock(sb) : EWOULDBLOCK) : \ ((sb)->sb_flags |= SB_LOCK), 0) /* release lock on sockbuf sb */ #define sbunlock(sb) { \ (sb)->sb_flags &= ~SB_LOCK; \ if ((sb)->sb_flags & SB_WANT) { \ (sb)->sb_flags &= ~SB_WANT; \ wakeup((caddr_t)&(sb)->sb_flags); \ } \ } #define sorwakeup(so) { sowakeup((so), &(so)->so_rcv); \ if ((so)->so_upcall) \ (*((so)->so_upcall))((so), (so)->so_upcallarg, M_DONTWAIT); \ } #define sowwakeup(so) sowakeup((so), &(so)->so_snd) #ifdef KERNEL extern u_long sb_max; /* to catch callers missing new second argument to sonewconn: */ #define sonewconn(head, connstatus) sonewconn1((head), (connstatus)) struct filedesc; struct mbuf; struct sockaddr; struct stat; /* * File operations on sockets. */ int soo_ioctl __P((struct file *fp, int cmd, caddr_t data, struct proc *p)); int soo_select __P((struct file *fp, int which, struct proc *p)); int soo_stat __P((struct socket *so, struct stat *ub)); /* * From uipc_socket and friends */ int getsock __P((struct filedesc *fdp, int fdes, struct file **fpp)); int sockargs __P((struct mbuf **mp, caddr_t buf, int buflen, int type)); void sbappend __P((struct sockbuf *sb, struct mbuf *m)); int sbappendaddr __P((struct sockbuf *sb, struct sockaddr *asa, struct mbuf *m0, struct mbuf *control)); int sbappendcontrol __P((struct sockbuf *sb, struct mbuf *m0, struct mbuf *control)); void sbappendrecord __P((struct sockbuf *sb, struct mbuf *m0)); void sbcheck __P((struct sockbuf *sb)); void sbcompress __P((struct sockbuf *sb, struct mbuf *m, struct mbuf *n)); struct mbuf * sbcreatecontrol __P((caddr_t p, int size, int type, int level)); void sbdrop __P((struct sockbuf *sb, int len)); void sbdroprecord __P((struct sockbuf *sb)); void sbflush __P((struct sockbuf *sb)); void sbinsertoob __P((struct sockbuf *sb, struct mbuf *m0)); void sbrelease __P((struct sockbuf *sb)); int sbreserve __P((struct sockbuf *sb, u_long cc)); int sbwait __P((struct sockbuf *sb)); int sb_lock __P((struct sockbuf *sb)); int soabort __P((struct socket *so)); int soaccept __P((struct socket *so, struct mbuf *nam)); int sobind __P((struct socket *so, struct mbuf *nam)); void socantrcvmore __P((struct socket *so)); void socantsendmore __P((struct socket *so)); int soclose __P((struct socket *so)); int soconnect __P((struct socket *so, struct mbuf *nam)); int soconnect2 __P((struct socket *so1, struct socket *so2)); int socreate __P((int dom, struct socket **aso, int type, int proto, struct proc *p)); int sodisconnect __P((struct socket *so)); void sofree __P((struct socket *so)); int sogetopt __P((struct socket *so, int level, int optname, struct mbuf **mp)); void sohasoutofband __P((struct socket *so)); void soisconnected __P((struct socket *so)); void soisconnecting __P((struct socket *so)); void soisdisconnected __P((struct socket *so)); void soisdisconnecting __P((struct socket *so)); int solisten __P((struct socket *so, int backlog)); struct socket * sodropablereq __P((struct socket *head)); struct socket * sonewconn1 __P((struct socket *head, int connstatus)); int soreceive __P((struct socket *so, struct mbuf **paddr, struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp)); int soreserve __P((struct socket *so, u_long sndcc, u_long rcvcc)); void sorflush __P((struct socket *so)); int sosend __P((struct socket *so, struct mbuf *addr, struct uio *uio, struct mbuf *top, struct mbuf *control, int flags)); int sosetopt __P((struct socket *so, int level, int optname, struct mbuf *m0)); int soshutdown __P((struct socket *so, int how)); void sowakeup __P((struct socket *so, struct sockbuf *sb)); #endif /* KERNEL */ #endif /* !_SYS_SOCKETVAR_H_ */
Go to most recent revision | Compare with Previous | Blame | View Log