raw_cb.c
上传用户:nvosite88
上传日期:2007-01-17
资源大小:4983k
文件大小:7k
- /* raw_cb.c - raw protocol control block handling routines */
- /* Copyright 1984 - 2001 Wind River Systems, Inc. */
- #include "copyright_wrs.h"
- /*
- * Copyright (c) 1980, 1986, 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.
- *
- * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93
- */
- /*
- modification history
- --------------------
- 01d,12oct01,rae merge from truestack ver 01f, base 01c
- 01c,02jul97,vin fixed warnings.
- 01b,05dec96,vin replaced free with FREE(),
- 01a,03mar96,vin created from BSD4.4 stuff,integrated with 02i of raw_cb.c
- */
- /*
- DESCRIPTION
- */
- #include "vxWorks.h"
- #include "net/systm.h"
- #include "net/mbuf.h"
- #include "sys/socket.h"
- #include "net/socketvar.h"
- #include "net/domain.h"
- #include "net/protosw.h"
- #include "errno.h"
- #include "net/if.h"
- #include "net/route.h"
- #include "net/raw_cb.h"
- #include "netinet/in.h"
- #ifdef WV_INSTRUMENTATION
- #ifdef INCLUDE_WVNET
- #include "wvNetLib.h"
- #endif
- #endif
- #ifdef VIRTUAL_STACK
- #include "netinet/vsLib.h"
- #endif
- extern void _insque ();
- extern void _remque ();
- #ifndef VIRTUAL_STACK
- struct rawcb rawcb; /* head of list */
- /*
- * Routines to manage the raw protocol control blocks.
- *
- * TODO:
- * hash lookups by protocol family/protocol + address family
- * take care of unique address problems per AF?
- * redo address binding to allow wildcards
- */
- u_long raw_sendspace = RAWSNDQ;
- u_long raw_recvspace = RAWRCVQ;
- #endif
- #ifdef WV_INSTRUMENTATION
- #ifdef INCLUDE_WVNET
- /* Set common fields of event identifiers for this module. */
- LOCAL UCHAR wvNetModuleId = WV_NET_RAWCB_MODULE; /* Value for raw_cb.c */
- LOCAL UCHAR wvNetLocalFilter = WV_NET_NONE; /* Available event filter */
- LOCAL ULONG wvNetEventId; /* Event identifier: see wvNetLib.h */
- #endif /* INCLUDE_WVNET */
- #endif
- /*
- * Allocate a control block and a nominal amount
- * of buffer space for the socket.
- */
- int
- raw_attach(so, proto)
- register struct socket *so;
- int proto;
- {
- register struct rawcb *rp = sotorawcb(so);
- int error;
- #ifdef WV_INSTRUMENTATION
- #ifdef INCLUDE_WVNET /* WV_NET_VERBOSE event */
- WV_NET_MARKER_1 (NET_CORE_EVENT, WV_NET_VERBOSE, 28, 4,
- WV_NETEVENT_RAWATTACH_START, so->so_fd)
- #endif /* INCLUDE_WVNET */
- #endif
- /*
- * It is assumed that raw_attach is called
- * after space has been allocated for the
- * rawcb.
- */
- if (rp == 0)
- {
- /*
- * XXX - This event cannot currently occur: the route_usrreq() routine
- * already checks for failure to allocate the control block.
- #ifdef WV_INSTRUMENTATION
- #ifdef INCLUDE_WVNET /@ WV_NET_CRITICAL event @/
- WV_NET_MARKER_1 (NET_CORE_EVENT, WV_NET_CRITICAL, 24, 1,
- WV_NETEVENT_RAWATTACH_NOPCBMEM, so->so_fd)
- #endif /@ INCLUDE_WVNET @/
- #endif
- * XXX - end of unused event
- */
- return (ENOBUFS);
- }
- if ((error = soreserve(so, raw_sendspace, raw_recvspace)))
- {
- /* XXX - This event does not currently indicate a memory allocation failure.
- * The soreserve() routine only sets high and low water mark values
- * and does not attempt to commit any memory, although it should.
- #ifdef WV_INSTRUMENTATION
- #ifdef INCLUDE_WVNET /@ WV_NET_CRITICAL event @/
- WV_NET_MARKER_1 (NET_CORE_EVENT, WV_NET_CRITICAL, 25, 2,
- WV_NETEVENT_RAWATTACH_NOSOCKBUFMEM, so->so_fd)
- #endif /@ INCLUDE_WVNET @/
- #endif
- * XXX - end of unused event
- */
- return (error);
- }
- rp->rcb_socket = so;
- rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
- rp->rcb_proto.sp_protocol = proto;
- #ifdef VIRTUAL_STACK
- insque(rp, &_rawcb);
- #else /* VIRTUAL_STACK */
- insque(rp, &rawcb);
- #endif /* VIRTUAL_STACK */
- return (0);
- }
- /*
- * Detach the raw connection block and discard
- * socket resources.
- */
- void
- raw_detach(rp)
- register struct rawcb *rp;
- {
- struct socket *so = rp->rcb_socket;
- #ifdef WV_INSTRUMENTATION
- #ifdef INCLUDE_WVNET /* WV_NET_VERBOSE event */
- WV_NET_MARKER_1 (NET_CORE_EVENT, WV_NET_VERBOSE, 29, 5,
- WV_NETEVENT_RAWDETACH_START, so->so_fd)
- #endif /* INCLUDE_WVNET */
- #endif
- so->so_pcb = 0;
- sofree(so);
- remque(rp);
- #ifdef notdef
- if (rp->rcb_laddr)
- m_freem(dtom(rp->rcb_laddr));
- rp->rcb_laddr = 0;
- #endif
- FREE(rp, MT_PCB);
- }
- /*
- * Disconnect and possibly release resources.
- */
- void
- raw_disconnect(rp)
- struct rawcb *rp;
- {
- #ifdef notdef
- if (rp->rcb_faddr)
- m_freem(dtom(rp->rcb_faddr));
- rp->rcb_faddr = 0;
- #endif
- if (rp->rcb_socket->so_state & SS_NOFDREF)
- raw_detach(rp);
- }
- #ifdef notdef
- int
- raw_bind(so, nam)
- register struct socket *so;
- struct mbuf *nam;
- {
- struct sockaddr *addr = mtod(nam, struct sockaddr *);
- register struct rawcb *rp;
- /* XXX - This event does not occur because this routine is never called
- * by the existing network stack since the PRU_BIND option within
- * the raw_usrreq switch statement is unsupported.
- #ifdef WV_INSTRUMENTATION
- #ifdef INCLUDE_WVNET /@ WV_NET_VERBOSE event @/
- WV_NET_MARKER_1 (NET_CORE_EVENT, WV_NET_VERBOSE, 30, 6,
- WV_NETEVENT_RAWBIND_START, so->so_fd)
- #endif /@ INCLUDE_WVNET @/
- #endif
- * XXX -end of unused event
- */
- if (ifnet == 0)
- {
- /* XXX - This event does not occur because this routine is never called
- * by the existing network stack since the PRU_BIND option within
- * the raw_usrreq switch statement is unsupported.
- #ifdef WV_INSTRUMENTATION
- #ifdef INCLUDE_WVNET /@ WV_NET_ERROR event @/
- WV_NET_MARKER_1 (NET_CORE_EVENT, WV_NET_ERROR, 31, 3,
- WV_NETEVENT_RAWBIND_NOIF, so->so_fd)
- #endif /@ INCLUDE_WVNET @/
- #endif
- * XXX -end of unused event
- */
- return (EADDRNOTAVAIL);
- }
- rp = sotorawcb(so);
- nam = m_copym(nam, 0, M_COPYALL, M_WAIT);
- rp->rcb_laddr = mtod(nam, struct sockaddr *);
- return (0);
- }
- #endif