4542c1cf5d
socket addresses in mbufs. (Socket buffers are the one exception.) A number of kernel APIs needed to get fixed in order to make this happen. Also, fix three protocol families which kept PCBs in mbufs to not malloc them instead. Delete some old compatibility cruft while we're at it, and add some new routines in the in_cksum family.
303 lines
6.7 KiB
C
303 lines
6.7 KiB
C
/*
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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* $Id: raw_usrreq.c,v 1.13 1997/08/02 14:32:40 bde Exp $
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/proc.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <net/raw_cb.h>
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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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raw_init()
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{
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LIST_INIT(&rawcb_list);
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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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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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{
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register struct rawcb *rp;
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register struct mbuf *m = m0;
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register int sockets = 0;
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struct socket *last;
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last = 0;
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LIST_FOREACH(rp, &rawcb_list, list) {
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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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#define equal(a1, a2) \
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(bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
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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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struct mbuf *n;
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n = m_copy(m, 0, (int)M_COPYALL);
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if (n) {
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if (sbappendaddr(&last->so_rcv, src,
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n, (struct mbuf *)0) == 0)
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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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sockets++;
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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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if (sbappendaddr(&last->so_rcv, src,
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m, (struct mbuf *)0) == 0)
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m_freem(m);
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else {
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sorwakeup(last);
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sockets++;
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}
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} else
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m_freem(m);
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}
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/*ARGSUSED*/
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void
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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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{
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if (cmd < 0 || cmd > PRC_NCMDS)
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return;
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/* INCOMPLETE */
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}
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static int
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raw_uabort(struct socket *so)
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{
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struct rawcb *rp = sotorawcb(so);
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if (rp == 0)
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return EINVAL;
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raw_disconnect(rp);
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sofree(so);
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soisdisconnected(so);
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return 0;
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}
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/* pru_accept is EOPNOTSUPP */
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static int
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raw_uattach(struct socket *so, int proto, struct proc *p)
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{
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struct rawcb *rp = sotorawcb(so);
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int error;
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if (rp == 0)
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return EINVAL;
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if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
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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
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raw_ubind(struct socket *so, struct sockaddr *nam, struct proc *p)
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{
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return EINVAL;
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}
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static int
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raw_uconnect(struct socket *so, struct sockaddr *nam, struct proc *p)
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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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static int
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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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if (rp == 0)
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return EINVAL;
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raw_detach(rp);
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return 0;
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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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struct rawcb *rp = sotorawcb(so);
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if (rp == 0)
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return EINVAL;
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if (rp->rcb_faddr == 0) {
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return ENOTCONN;
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}
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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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static int
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raw_upeeraddr(struct socket *so, struct sockaddr **nam)
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{
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struct rawcb *rp = sotorawcb(so);
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unsigned len;
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if (rp == 0)
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return EINVAL;
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if (rp->rcb_faddr == 0) {
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return ENOTCONN;
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}
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*nam = dup_sockaddr(rp->rcb_faddr, 1);
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return 0;
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}
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/* pru_rcvd is EOPNOTSUPP */
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/* pru_rcvoob is EOPNOTSUPP */
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static int
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raw_usend(struct socket *so, int flags, struct mbuf *m,
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struct sockaddr *nam, struct mbuf *control, struct proc *p)
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{
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int error;
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struct rawcb *rp = sotorawcb(so);
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if (rp == 0) {
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error = EINVAL;
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goto release;
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}
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if (flags & PRUS_OOB) {
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error = EOPNOTSUPP;
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goto release;
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}
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if (control && control->m_len) {
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error = EOPNOTSUPP;
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goto release;
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}
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if (nam) {
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if (rp->rcb_faddr) {
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error = EISCONN;
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goto release;
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}
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rp->rcb_faddr = nam;
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} else if (rp->rcb_faddr == 0) {
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error = ENOTCONN;
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goto release;
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}
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error = (*so->so_proto->pr_output)(m, so);
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m = NULL;
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if (nam)
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rp->rcb_faddr = 0;
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release:
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if (m != NULL)
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m_freem(m);
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return (error);
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}
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/* pru_sense is null */
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static int
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raw_ushutdown(struct socket *so)
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{
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struct rawcb *rp = sotorawcb(so);
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if (rp == 0)
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return EINVAL;
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socantsendmore(so);
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return 0;
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}
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static int
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raw_usockaddr(struct socket *so, struct sockaddr **nam)
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{
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struct rawcb *rp = sotorawcb(so);
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unsigned len;
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if (rp == 0)
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return EINVAL;
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if (rp->rcb_laddr == 0)
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return EINVAL;
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*nam = dup_sockaddr(rp->rcb_laddr, 1);
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return 0;
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}
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struct pr_usrreqs raw_usrreqs = {
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raw_uabort, pru_accept_notsupp, raw_uattach, raw_ubind, raw_uconnect,
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pru_connect2_notsupp, pru_control_notsupp, raw_udetach,
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raw_udisconnect, pru_listen_notsupp, raw_upeeraddr, pru_rcvd_notsupp,
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pru_rcvoob_notsupp, raw_usend, pru_sense_null, raw_ushutdown,
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raw_usockaddr, sosend, soreceive, soselect
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};
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