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Try narrow down the culprit sending undefined packet types through the loopback

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This commit is contained in:
Julian Elischer 1998-06-14 20:58:17 +00:00
parent 6797869271
commit 201c2527a9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=36992
4 changed files with 31 additions and 9 deletions
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9
sys/net/if_ethersubr.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93
* $Id: if_ethersubr.c,v 1.49 1998/06/12 03:48:07 julian Exp $
* $Id: if_ethersubr.c,v 1.50 1998/06/13 02:27:10 julian Exp $
*/
#include "opt_atalk.h"
@ -357,16 +357,15 @@ ether_output(ifp, m0, dst, rt0)
* on the wire). However, we don't do that here for security
* reasons and compatibility with the original behavior.
*/
if (ifp->if_flags & IFF_SIMPLEX) {
if ((ifp->if_flags & IFF_SIMPLEX) &&
(loop_copy != -1)) {
if ((m->m_flags & M_BCAST) || (loop_copy > 0)) {
struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
(void) if_simloop(ifp, n, dst, ETHER_HDR_LEN);
} else if (bcmp(eh->ether_dhost,
eh->ether_shost, ETHER_ADDR_LEN) == 0) {
if (loop_copy != -1)
(void) if_simloop(ifp, m, dst,
ETHER_HDR_LEN);
(void) if_simloop(ifp, m, dst, ETHER_HDR_LEN);
return(0); /* XXX */
}
}

6
sys/net/if_fddisubr.c
View File

@ -33,7 +33,7 @@
* SUCH DAMAGE.
*
* from: if_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp
* $Id: if_fddisubr.c,v 1.30 1998/05/21 00:33:16 dg Exp $
* $Id: if_fddisubr.c,v 1.31 1998/06/12 03:48:08 julian Exp $
*/
#include "opt_atalk.h"
@ -301,6 +301,7 @@ fddi_output(ifp, m0, dst, rt0)
case AF_UNSPEC:
{
struct ether_header *eh;
loop_copy = -1;
eh = (struct ether_header *)dst->sa_data;
(void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst));
if (*edst & 1)
@ -386,7 +387,8 @@ fddi_output(ifp, m0, dst, rt0)
* on the wire). However, we don't do that here for security
* reasons and compatibility with the original behavior.
*/
if (ifp->if_flags & IFF_SIMPLEX) {
if ((ifp->if_flags & IFF_SIMPLEX) &&
(loop_copy != -1)) {
if ((m->m_flags & M_BCAST) || loop_copy) {
struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);

15
sys/net/if_loop.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)if_loop.c 8.1 (Berkeley) 6/10/93
* $Id: if_loop.c,v 1.33 1998/06/12 03:48:09 julian Exp $
* $Id: if_loop.c,v 1.34 1998/06/12 20:03:26 julian Exp $
*/
/*
@ -144,6 +144,19 @@ looutput(ifp, m, dst, rt)
}
ifp->if_opackets++;
ifp->if_obytes += m->m_pkthdr.len;
#if 1 /* XXX */
switch (dst->sa_family) {
case AF_INET:
case AF_IPX:
case AF_NS:
case AF_ISO:
case AF_APPLETALK:
default:
printf("looutput: af=%d unexpected", dst->sa_family);
m_freem(m);
return (EAFNOSUPPORT);
}
#endif
return(if_simloop(ifp, m, dst, 0));
}

10
sys/netinet/ip_output.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)ip_output.c 8.3 (Berkeley) 1/21/94
* $Id: ip_output.c,v 1.71 1998/06/06 21:49:17 julian Exp $
* $Id: ip_output.c,v 1.72 1998/06/12 03:48:19 julian Exp $
*/
#define _IP_VHL
@ -1322,6 +1322,14 @@ ip_mloopback(ifp, m, dst, hlen)
* packet. For the moment, we'll err on the side
* of safety by using if_simloop().
*/
#if 1 /* XXX */
if (dst->sin_family != AF_INET) {
printf("ip_mloopback: bad address family %d\n");
dst->sin_family);
dst->sin_family = AF_INET;
}
#endif
#ifdef notdef
copym->m_pkthdr.rcvif = ifp;
ip_input(copym);