2005-01-07 01:45:51 +00:00
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/*-
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1994-05-24 10:09:53 +00:00
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
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1999-08-28 01:08:13 +00:00
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* $FreeBSD$
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1994-05-24 10:09:53 +00:00
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*/
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#include <sys/param.h>
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2004-06-15 04:13:59 +00:00
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#include <sys/kernel.h>
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2002-04-30 01:54:54 +00:00
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#include <sys/lock.h>
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2004-03-01 03:14:23 +00:00
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#include <sys/malloc.h>
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1994-05-24 10:09:53 +00:00
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#include <sys/mbuf.h>
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2004-06-12 20:47:32 +00:00
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#include <sys/mutex.h>
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1994-05-24 10:09:53 +00:00
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#include <sys/protosw.h>
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2002-04-30 01:54:54 +00:00
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#include <sys/signalvar.h>
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1994-05-24 10:09:53 +00:00
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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2002-04-30 01:54:54 +00:00
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#include <sys/sx.h>
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#include <sys/systm.h>
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1994-05-24 10:09:53 +00:00
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#include <net/raw_cb.h>
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2004-06-15 04:13:59 +00:00
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MTX_SYSINIT(rawcb_mtx, &rawcb_mtx, "rawcb", MTX_DEF);
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1994-05-24 10:09:53 +00:00
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/*
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* Initialize raw connection block q.
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*/
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void
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2002-11-20 19:00:54 +00:00
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raw_init()
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1994-05-24 10:09:53 +00:00
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{
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2004-06-15 04:13:59 +00:00
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1997-04-14 18:23:25 +00:00
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LIST_INIT(&rawcb_list);
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1994-05-24 10:09:53 +00:00
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}
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/*
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* Raw protocol input routine. Find the socket
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* associated with the packet(s) and move them over. If
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* nothing exists for this packet, drop it.
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*/
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/*
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* Raw protocol interface.
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*/
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void
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2002-11-20 19:00:54 +00:00
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raw_input(m0, proto, src, dst)
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struct mbuf *m0;
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register struct sockproto *proto;
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struct sockaddr *src, *dst;
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1994-05-24 10:09:53 +00:00
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{
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2002-11-20 19:00:54 +00:00
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register struct rawcb *rp;
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register struct mbuf *m = m0;
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1994-05-24 10:09:53 +00:00
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struct socket *last;
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2002-11-20 19:00:54 +00:00
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last = 0;
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2004-06-15 04:13:59 +00:00
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mtx_lock(&rawcb_mtx);
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1997-04-14 18:23:25 +00:00
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LIST_FOREACH(rp, &rawcb_list, list) {
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1994-05-24 10:09:53 +00:00
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if (rp->rcb_proto.sp_family != proto->sp_family)
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continue;
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if (rp->rcb_proto.sp_protocol &&
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rp->rcb_proto.sp_protocol != proto->sp_protocol)
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continue;
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/*
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* We assume the lower level routines have
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* placed the address in a canonical format
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* suitable for a structure comparison.
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*
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* Note that if the lengths are not the same
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* the comparison will fail at the first byte.
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*/
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2002-11-20 19:00:54 +00:00
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#define equal(a1, a2) \
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(bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
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1994-05-24 10:09:53 +00:00
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if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
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continue;
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if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
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continue;
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if (last) {
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2002-11-20 19:00:54 +00:00
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struct mbuf *n;
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n = m_copy(m, 0, (int)M_COPYALL);
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1994-10-08 22:38:27 +00:00
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if (n) {
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1994-05-24 10:09:53 +00:00
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if (sbappendaddr(&last->so_rcv, src,
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2002-11-20 19:00:54 +00:00
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n, (struct mbuf *)0) == 0)
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1994-05-24 10:09:53 +00:00
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/* should notify about lost packet */
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m_freem(n);
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else {
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sorwakeup(last);
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}
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}
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}
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last = rp->rcb_socket;
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}
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if (last) {
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2002-11-20 19:00:54 +00:00
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if (sbappendaddr(&last->so_rcv, src,
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m, (struct mbuf *)0) == 0)
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1994-05-24 10:09:53 +00:00
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m_freem(m);
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else {
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sorwakeup(last);
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}
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} else
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m_freem(m);
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2004-06-15 04:13:59 +00:00
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mtx_unlock(&rawcb_mtx);
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1994-05-24 10:09:53 +00:00
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}
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/*ARGSUSED*/
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void
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2002-11-20 19:00:54 +00:00
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raw_ctlinput(cmd, arg, dummy)
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int cmd;
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struct sockaddr *arg;
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void *dummy;
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1994-05-24 10:09:53 +00:00
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{
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2003-09-11 21:40:21 +00:00
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if (cmd < 0 || cmd >= PRC_NCMDS)
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1994-05-24 10:09:53 +00:00
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return;
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/* INCOMPLETE */
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}
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2006-04-01 15:15:05 +00:00
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static void
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1997-04-27 20:01:29 +00:00
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raw_uabort(struct socket *so)
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1994-05-24 10:09:53 +00:00
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{
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1997-04-27 20:01:29 +00:00
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struct rawcb *rp = sotorawcb(so);
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1994-05-24 10:09:53 +00:00
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2006-04-01 15:15:05 +00:00
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KASSERT(rp != NULL, ("raw_uabort: rp == NULL"));
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1997-04-27 20:01:29 +00:00
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raw_disconnect(rp);
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2004-06-12 20:47:32 +00:00
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soisdisconnected(so);
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2006-07-21 17:11:15 +00:00
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}
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static void
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raw_uclose(struct socket *so)
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{
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struct rawcb *rp = sotorawcb(so);
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KASSERT(rp != NULL, ("raw_uabort: rp == NULL"));
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raw_disconnect(rp);
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soisdisconnected(so);
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1997-04-27 20:01:29 +00:00
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}
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/* pru_accept is EOPNOTSUPP */
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static int
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2001-09-12 08:38:13 +00:00
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raw_uattach(struct socket *so, int proto, struct thread *td)
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1997-04-27 20:01:29 +00:00
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{
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int error;
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2006-04-09 15:15:28 +00:00
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/*
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* Implementors of raw sockets will already have allocated the PCB,
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* so it must be non-NULL here.
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*/
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KASSERT(sotorawcb(so) != NULL, ("raw_uattach: so_pcb == NULL"));
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2002-04-01 21:31:13 +00:00
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if (td && (error = suser(td)) != 0)
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1997-04-27 20:01:29 +00:00
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return error;
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return raw_attach(so, proto);
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}
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static int
|
2001-09-12 08:38:13 +00:00
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raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
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1997-04-27 20:01:29 +00:00
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{
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return EINVAL;
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}
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static int
|
2001-09-12 08:38:13 +00:00
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raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td)
|
1997-04-27 20:01:29 +00:00
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{
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return EINVAL;
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}
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/* pru_connect2 is EOPNOTSUPP */
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/* pru_control is EOPNOTSUPP */
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|
Chance protocol switch method pru_detach() so that it returns void
rather than an error. Detaches do not "fail", they other occur or
the protocol flags SS_PROTOREF to take ownership of the socket.
soclose() no longer looks at so_pcb to see if it's NULL, relying
entirely on the protocol to decide whether it's time to free the
socket or not using SS_PROTOREF. so_pcb is now entirely owned and
managed by the protocol code. Likewise, no longer test so_pcb in
other socket functions, such as soreceive(), which have no business
digging into protocol internals.
Protocol detach routines no longer try to free the socket on detach,
this is performed in the socket code if the protocol permits it.
In rts_detach(), no longer test for rp != NULL in detach, and
likewise in other protocols that don't permit a NULL so_pcb, reduce
the incidence of testing for it during detach.
netinet and netinet6 are not fully updated to this change, which
will be in an upcoming commit. In their current state they may leak
memory or panic.
MFC after: 3 months
2006-04-01 15:42:02 +00:00
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static void
|
1997-04-27 20:01:29 +00:00
|
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raw_udetach(struct socket *so)
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{
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|
struct rawcb *rp = sotorawcb(so);
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|
2006-04-01 15:55:44 +00:00
|
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KASSERT(rp != NULL, ("raw_udetach: rp == NULL"));
|
1997-04-27 20:01:29 +00:00
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raw_detach(rp);
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}
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static int
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raw_udisconnect(struct socket *so)
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|
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{
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struct rawcb *rp = sotorawcb(so);
|
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|
2006-04-01 15:55:44 +00:00
|
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KASSERT(rp != NULL, ("raw_udisconnect: rp == NULL"));
|
2002-11-20 19:00:54 +00:00
|
|
|
if (rp->rcb_faddr == 0) {
|
1997-04-27 20:01:29 +00:00
|
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|
return ENOTCONN;
|
2002-11-20 19:00:54 +00:00
|
|
|
}
|
1997-04-27 20:01:29 +00:00
|
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|
raw_disconnect(rp);
|
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|
|
soisdisconnected(so);
|
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|
return 0;
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|
|
|
}
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|
|
|
|
|
/* pru_listen is EOPNOTSUPP */
|
|
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|
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static int
|
1997-08-16 19:16:27 +00:00
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raw_upeeraddr(struct socket *so, struct sockaddr **nam)
|
1997-04-27 20:01:29 +00:00
|
|
|
{
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|
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struct rawcb *rp = sotorawcb(so);
|
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|
|
|
2006-04-01 15:55:44 +00:00
|
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KASSERT(rp != NULL, ("raw_upeeraddr: rp == NULL"));
|
2002-11-20 19:00:54 +00:00
|
|
|
if (rp->rcb_faddr == 0) {
|
1997-04-27 20:01:29 +00:00
|
|
|
return ENOTCONN;
|
2002-11-20 19:00:54 +00:00
|
|
|
}
|
2004-03-01 03:14:23 +00:00
|
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|
*nam = sodupsockaddr(rp->rcb_faddr, M_WAITOK);
|
1997-04-27 20:01:29 +00:00
|
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|
return 0;
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|
|
|
}
|
|
|
|
|
|
|
|
/* pru_rcvd is EOPNOTSUPP */
|
|
|
|
/* pru_rcvoob is EOPNOTSUPP */
|
|
|
|
|
|
|
|
static int
|
|
|
|
raw_usend(struct socket *so, int flags, struct mbuf *m,
|
2001-09-12 08:38:13 +00:00
|
|
|
struct sockaddr *nam, struct mbuf *control, struct thread *td)
|
1997-04-27 20:01:29 +00:00
|
|
|
{
|
|
|
|
int error;
|
|
|
|
struct rawcb *rp = sotorawcb(so);
|
|
|
|
|
2006-04-01 15:55:44 +00:00
|
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|
KASSERT(rp != NULL, ("raw_usend: rp == NULL"));
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1997-04-27 20:01:29 +00:00
|
|
|
if (flags & PRUS_OOB) {
|
1994-05-24 10:09:53 +00:00
|
|
|
error = EOPNOTSUPP;
|
|
|
|
goto release;
|
1997-04-27 20:01:29 +00:00
|
|
|
}
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1997-04-27 20:01:29 +00:00
|
|
|
if (control && control->m_len) {
|
1994-05-24 10:09:53 +00:00
|
|
|
error = EOPNOTSUPP;
|
1997-04-27 20:01:29 +00:00
|
|
|
goto release;
|
|
|
|
}
|
|
|
|
if (nam) {
|
|
|
|
if (rp->rcb_faddr) {
|
|
|
|
error = EISCONN;
|
|
|
|
goto release;
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
1997-08-16 19:16:27 +00:00
|
|
|
rp->rcb_faddr = nam;
|
1997-04-27 20:01:29 +00:00
|
|
|
} else if (rp->rcb_faddr == 0) {
|
|
|
|
error = ENOTCONN;
|
|
|
|
goto release;
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
1997-04-27 20:01:29 +00:00
|
|
|
error = (*so->so_proto->pr_output)(m, so);
|
|
|
|
m = NULL;
|
|
|
|
if (nam)
|
|
|
|
rp->rcb_faddr = 0;
|
1994-05-24 10:09:53 +00:00
|
|
|
release:
|
|
|
|
if (m != NULL)
|
|
|
|
m_freem(m);
|
|
|
|
return (error);
|
|
|
|
}
|
1997-04-27 20:01:29 +00:00
|
|
|
|
|
|
|
/* pru_sense is null */
|
|
|
|
|
|
|
|
static int
|
|
|
|
raw_ushutdown(struct socket *so)
|
|
|
|
{
|
|
|
|
|
2006-04-01 15:55:44 +00:00
|
|
|
KASSERT(sotorawcb(so) != NULL, ("raw_ushutdown: rp == NULL"));
|
1997-04-27 20:01:29 +00:00
|
|
|
socantsendmore(so);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
1997-08-16 19:16:27 +00:00
|
|
|
raw_usockaddr(struct socket *so, struct sockaddr **nam)
|
1997-04-27 20:01:29 +00:00
|
|
|
{
|
|
|
|
struct rawcb *rp = sotorawcb(so);
|
|
|
|
|
2006-04-01 15:55:44 +00:00
|
|
|
KASSERT(rp != NULL, ("raw_usockaddr: rp == NULL"));
|
1997-04-27 20:01:29 +00:00
|
|
|
if (rp->rcb_laddr == 0)
|
|
|
|
return EINVAL;
|
2004-03-01 03:14:23 +00:00
|
|
|
*nam = sodupsockaddr(rp->rcb_laddr, M_WAITOK);
|
1997-04-27 20:01:29 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct pr_usrreqs raw_usrreqs = {
|
2004-11-08 14:44:54 +00:00
|
|
|
.pru_abort = raw_uabort,
|
|
|
|
.pru_attach = raw_uattach,
|
|
|
|
.pru_bind = raw_ubind,
|
|
|
|
.pru_connect = raw_uconnect,
|
|
|
|
.pru_detach = raw_udetach,
|
|
|
|
.pru_disconnect = raw_udisconnect,
|
|
|
|
.pru_peeraddr = raw_upeeraddr,
|
|
|
|
.pru_send = raw_usend,
|
|
|
|
.pru_shutdown = raw_ushutdown,
|
|
|
|
.pru_sockaddr = raw_usockaddr,
|
2006-07-21 17:11:15 +00:00
|
|
|
.pru_close = raw_uclose,
|
1997-04-27 20:01:29 +00:00
|
|
|
};
|