310 lines
6.9 KiB
C
310 lines
6.9 KiB
C
/*
|
|
* 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_usrreq.c 8.1 (Berkeley) 6/10/93
|
|
* $Id: raw_usrreq.c,v 1.3 1994/08/18 22:35:21 wollman Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/domain.h>
|
|
#include <sys/protosw.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/errno.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/route.h>
|
|
#include <net/netisr.h>
|
|
#include <net/raw_cb.h>
|
|
|
|
/*
|
|
* Initialize raw connection block q.
|
|
*/
|
|
void
|
|
raw_init()
|
|
{
|
|
|
|
rawcb.rcb_next = rawcb.rcb_prev = &rawcb;
|
|
}
|
|
|
|
|
|
/*
|
|
* Raw protocol input routine. Find the socket
|
|
* associated with the packet(s) and move them over. If
|
|
* nothing exists for this packet, drop it.
|
|
*/
|
|
/*
|
|
* Raw protocol interface.
|
|
*/
|
|
void
|
|
raw_input(m0, proto, src, dst)
|
|
struct mbuf *m0;
|
|
register struct sockproto *proto;
|
|
struct sockaddr *src, *dst;
|
|
{
|
|
register struct rawcb *rp;
|
|
register struct mbuf *m = m0;
|
|
register int sockets = 0;
|
|
struct socket *last;
|
|
|
|
last = 0;
|
|
for (rp = rawcb.rcb_next; rp != &rawcb; rp = rp->rcb_next) {
|
|
if (rp->rcb_proto.sp_family != proto->sp_family)
|
|
continue;
|
|
if (rp->rcb_proto.sp_protocol &&
|
|
rp->rcb_proto.sp_protocol != proto->sp_protocol)
|
|
continue;
|
|
/*
|
|
* We assume the lower level routines have
|
|
* placed the address in a canonical format
|
|
* suitable for a structure comparison.
|
|
*
|
|
* Note that if the lengths are not the same
|
|
* the comparison will fail at the first byte.
|
|
*/
|
|
#define equal(a1, a2) \
|
|
(bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
|
|
if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
|
|
continue;
|
|
if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
|
|
continue;
|
|
if (last) {
|
|
struct mbuf *n;
|
|
n = m_copy(m, 0, (int)M_COPYALL);
|
|
if (n) {
|
|
if (sbappendaddr(&last->so_rcv, src,
|
|
n, (struct mbuf *)0) == 0)
|
|
/* should notify about lost packet */
|
|
m_freem(n);
|
|
else {
|
|
sorwakeup(last);
|
|
sockets++;
|
|
}
|
|
}
|
|
}
|
|
last = rp->rcb_socket;
|
|
}
|
|
if (last) {
|
|
if (sbappendaddr(&last->so_rcv, src,
|
|
m, (struct mbuf *)0) == 0)
|
|
m_freem(m);
|
|
else {
|
|
sorwakeup(last);
|
|
sockets++;
|
|
}
|
|
} else
|
|
m_freem(m);
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
void
|
|
raw_ctlinput(cmd, arg)
|
|
int cmd;
|
|
struct sockaddr *arg;
|
|
{
|
|
|
|
if (cmd < 0 || cmd > PRC_NCMDS)
|
|
return;
|
|
/* INCOMPLETE */
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
int
|
|
raw_usrreq(so, req, m, nam, control)
|
|
struct socket *so;
|
|
int req;
|
|
struct mbuf *m, *nam, *control;
|
|
{
|
|
register struct rawcb *rp = sotorawcb(so);
|
|
register int error = 0;
|
|
int len;
|
|
|
|
if (req == PRU_CONTROL)
|
|
return (EOPNOTSUPP);
|
|
if (control && control->m_len) {
|
|
error = EOPNOTSUPP;
|
|
goto release;
|
|
}
|
|
if (rp == 0) {
|
|
error = EINVAL;
|
|
goto release;
|
|
}
|
|
switch (req) {
|
|
|
|
/*
|
|
* Allocate a raw control block and fill in the
|
|
* necessary info to allow packets to be routed to
|
|
* the appropriate raw interface routine.
|
|
*/
|
|
case PRU_ATTACH:
|
|
if ((so->so_state & SS_PRIV) == 0) {
|
|
error = EACCES;
|
|
break;
|
|
}
|
|
error = raw_attach(so, (int)nam);
|
|
break;
|
|
|
|
/*
|
|
* Destroy state just before socket deallocation.
|
|
* Flush data or not depending on the options.
|
|
*/
|
|
case PRU_DETACH:
|
|
if (rp == 0) {
|
|
error = ENOTCONN;
|
|
break;
|
|
}
|
|
raw_detach(rp);
|
|
break;
|
|
|
|
#ifdef notdef
|
|
/*
|
|
* If a socket isn't bound to a single address,
|
|
* the raw input routine will hand it anything
|
|
* within that protocol family (assuming there's
|
|
* nothing else around it should go to).
|
|
*/
|
|
case PRU_CONNECT:
|
|
if (rp->rcb_faddr) {
|
|
error = EISCONN;
|
|
break;
|
|
}
|
|
nam = m_copym(nam, 0, M_COPYALL, M_WAIT);
|
|
rp->rcb_faddr = mtod(nam, struct sockaddr *);
|
|
soisconnected(so);
|
|
break;
|
|
|
|
case PRU_BIND:
|
|
if (rp->rcb_laddr) {
|
|
error = EINVAL; /* XXX */
|
|
break;
|
|
}
|
|
error = raw_bind(so, nam);
|
|
break;
|
|
#endif
|
|
|
|
case PRU_CONNECT2:
|
|
error = EOPNOTSUPP;
|
|
goto release;
|
|
|
|
case PRU_DISCONNECT:
|
|
if (rp->rcb_faddr == 0) {
|
|
error = ENOTCONN;
|
|
break;
|
|
}
|
|
raw_disconnect(rp);
|
|
soisdisconnected(so);
|
|
break;
|
|
|
|
/*
|
|
* Mark the connection as being incapable of further input.
|
|
*/
|
|
case PRU_SHUTDOWN:
|
|
socantsendmore(so);
|
|
break;
|
|
|
|
/*
|
|
* Ship a packet out. The appropriate raw output
|
|
* routine handles any massaging necessary.
|
|
*/
|
|
case PRU_SEND:
|
|
if (nam) {
|
|
if (rp->rcb_faddr) {
|
|
error = EISCONN;
|
|
break;
|
|
}
|
|
rp->rcb_faddr = mtod(nam, struct sockaddr *);
|
|
} else if (rp->rcb_faddr == 0) {
|
|
error = ENOTCONN;
|
|
break;
|
|
}
|
|
error = (*so->so_proto->pr_output)(m, so);
|
|
m = NULL;
|
|
if (nam)
|
|
rp->rcb_faddr = 0;
|
|
break;
|
|
|
|
case PRU_ABORT:
|
|
raw_disconnect(rp);
|
|
sofree(so);
|
|
soisdisconnected(so);
|
|
break;
|
|
|
|
case PRU_SENSE:
|
|
/*
|
|
* stat: don't bother with a blocksize.
|
|
*/
|
|
return (0);
|
|
|
|
/*
|
|
* Not supported.
|
|
*/
|
|
case PRU_RCVOOB:
|
|
case PRU_RCVD:
|
|
return(EOPNOTSUPP);
|
|
|
|
case PRU_LISTEN:
|
|
case PRU_ACCEPT:
|
|
case PRU_SENDOOB:
|
|
error = EOPNOTSUPP;
|
|
break;
|
|
|
|
case PRU_SOCKADDR:
|
|
if (rp->rcb_laddr == 0) {
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
len = rp->rcb_laddr->sa_len;
|
|
bcopy((caddr_t)rp->rcb_laddr, mtod(nam, caddr_t), (unsigned)len);
|
|
nam->m_len = len;
|
|
break;
|
|
|
|
case PRU_PEERADDR:
|
|
if (rp->rcb_faddr == 0) {
|
|
error = ENOTCONN;
|
|
break;
|
|
}
|
|
len = rp->rcb_faddr->sa_len;
|
|
bcopy((caddr_t)rp->rcb_faddr, mtod(nam, caddr_t), (unsigned)len);
|
|
nam->m_len = len;
|
|
break;
|
|
|
|
default:
|
|
panic("raw_usrreq");
|
|
}
|
|
release:
|
|
if (m != NULL)
|
|
m_freem(m);
|
|
return (error);
|
|
}
|