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Fix a dummynet bug caused by passing a bad next hop address (the

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symptom was the msg "arp failure -- host is not on local network" that
some user have seen on multihomed machines.
Bug tracked down by Emmanuel Duros
This commit is contained in:
Luigi Rizzo 1999-03-16 12:06:11 +00:00
parent 516bf2ccb8
commit f0a53591ad
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=44797
1 changed files with 5 additions and 5 deletions
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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 1.85 1998/12/21 21:36:40 luigi Exp $
* $Id: ip_output.c,v 1.86 1999/02/19 18:32:55 luigi Exp $
*/
#define _IP_VHL
@ -155,13 +155,13 @@ ip_output(m0, opt, ro, flags, imo)
* the packet was already tagged, so part of the
* processing was already done, and we need to go down.
* opt, flags and imo have already been used, and now
* they are used to hold ifp and hlen and NULL, respectively.
* they are used to hold ifp, dst and NULL, respectively.
*/
rule = (struct ip_fw_chain *)(m->m_data) ;
m0 = m = m->m_next ;
free(tmp_m, M_IPFW);
ip = mtod(m, struct ip *);
dst = (struct sockaddr_in *)&ro->ro_dst;
dst = (struct sockaddr_in *)flags ;
ifp = (struct ifnet *)opt;
hlen = IP_VHL_HL(ip->ip_vhl) << 2 ;
opt = NULL ;
@ -461,14 +461,14 @@ ip_output(m0, opt, ro, flags, imo)
if (off & 0x10000) {
/*
* pass the pkt to dummynet. Need to include
* pipe number, m, ifp, ro, hlen because these are
* pipe number, m, ifp, ro, dst because these are
* not recomputed in the next pass.
* All other parameters have been already used and
* so they are not needed anymore.
* XXX note: if the ifp or ro entry are deleted
* while a pkt is in dummynet, we are in trouble!
*/
dummynet_io(off & 0xffff, DN_TO_IP_OUT, m,ifp,ro,hlen,rule);
dummynet_io(off & 0xffff, DN_TO_IP_OUT, m,ifp,ro,dst,rule);
goto done;
}
#endif