* Copyright (c) 1982, 1986, 1988 Regents of the University of California.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 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
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* @(#)raw_imp.c 7.6 (Berkeley) 6/28/90
#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"
* 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
register struct imp_leader
*ip
;
register struct sockaddr_in
*sin
;
register struct raw_inpcb
*rp
= sotorawinpcb(so
);
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 */
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 */
ip
= mtod(m
, struct imp_leader
*);
if (ip
->il_format
!= IMP_NFF
) {
error
= EMSGSIZE
; /* XXX */
if (ip
->il_link
!= IMPLINK_IP
&&
(ip
->il_link
<IMPLINK_LOWEXPER
|| ip
->il_link
>IMPLINK_HIGHEXPER
)) {
* 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
)
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
);
ia
= in_iaonnetof(in_netof(sin
->sin_addr
));
return (impoutput(ia
->ia_ifp
, m
, (struct sockaddr
*)sin
));