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- /*
- * Copyright (c) 1982, 1986, 1988 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_imp.c 7.6 (Berkeley) 6/28/90
- */
-
- #include "param.h"
- #include "mbuf.h"
- #include "socket.h"
- #include "protosw.h"
- #include "socketvar.h"
- #include "errno.h"
-
- #include "../net/if.h"
- #include "../net/route.h"
- #include "../net/raw_cb.h"
-
- #include "../netinet/in.h"
- #include "../netinet/in_systm.h"
- #include "../netinet/in_var.h"
- #include "../netinet/in_pcb.h"
- #include "if_imp.h"
-
- /*
- * Raw interface to IMP.
- */
-
- /*
- * Generate IMP leader and pass packet to impoutput.
- * The user must create a skeletal leader in order to
- * communicate message type, message subtype, etc.
- * We fill in holes where needed and verify parameters
- * supplied by user.
- */
- rimp_output(m, so)
- register struct mbuf *m;
- struct socket *so;
- {
- struct mbuf *n;
- int len, error = 0;
- register struct imp_leader *ip;
- register struct sockaddr_in *sin;
- register struct raw_inpcb *rp = sotorawinpcb(so);
- struct in_ifaddr *ia;
- struct control_leader *cp;
-
- /*
- * Verify user has supplied necessary space
- * for the leader and check parameters in it.
- */
- if ((m->m_len < sizeof(struct control_leader)) &&
- (m = m_pullup(m, sizeof(struct control_leader))) == 0) {
- error = EMSGSIZE; /* XXX */
- goto bad;
- }
- cp = mtod(m, struct control_leader *);
- if (cp->dl_mtype == IMPTYPE_DATA)
- if (m->m_len < sizeof(struct imp_leader) &&
- (m = m_pullup(m, sizeof(struct imp_leader))) == 0) {
- error = EMSGSIZE; /* XXX */
- goto bad;
- }
- ip = mtod(m, struct imp_leader *);
- if (ip->il_format != IMP_NFF) {
- error = EMSGSIZE; /* XXX */
- goto bad;
- }
- #ifdef notdef
- if (ip->il_link != IMPLINK_IP &&
- (ip->il_link<IMPLINK_LOWEXPER || ip->il_link>IMPLINK_HIGHEXPER)) {
- error = EPERM;
- goto bad;
- }
- #endif
-
- /*
- * Fill in IMP leader -- impoutput refrains from rebuilding
- * the leader when it sees the protocol family PF_IMPLINK.
- * (message size calculated by walking through mbuf's)
- */
- for (len = 0, n = m; n; n = n->m_next)
- len += n->m_len;
- ip->il_length = htons((u_short)(len << 3));
- sin = (struct sockaddr_in *)rp->rinp_rcb.rcb_faddr;
- imp_addr_to_leader((struct control_leader *)ip, sin->sin_addr.s_addr);
- /* no routing here */
- ia = in_iaonnetof(in_netof(sin->sin_addr));
- if (ia)
- return (impoutput(ia->ia_ifp, m, (struct sockaddr *)sin));
- error = ENETUNREACH;
- bad:
- m_freem(m);
- return (error);
- }
-