svn commit: r196235 - in stable/8/sys: . amd64/include/xen cddl/contrib/opensolaris contrib/dev/acpica contrib/pf dev/ata dev/cxgb dev/xen/netfront dev/xen/xenpci modules/dtrace/dtnfsclient modules...

Qing Li qingli at
Sat Aug 15 00:04:13 UTC 2009

Author: qingli
Date: Sat Aug 15 00:04:12 2009
New Revision: 196235

  MFC	196234
  In function ip_output(), the cached route is flushed when there is a
  mismatch between the cached entry and the intended destination. The
  cached rtentry{} is flushed but the associated llentry{} is not. This
  causes the wrong destination MAC address being used in the output
  packets. The fix is to flush the llentry{} when rtentry{} is cleared.
  Reviewed by:	kmacy, rwatson
  Approved by:	re

  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/ata/   (props changed)
  stable/8/sys/dev/cxgb/   (props changed)
  stable/8/sys/dev/xen/netfront/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)
  stable/8/sys/modules/dtrace/dtnfsclient/   (props changed)
  stable/8/sys/modules/ip6_mroute_mod/   (props changed)
  stable/8/sys/modules/ipmi/ipmi_linux/   (props changed)
  stable/8/sys/netinet/ipfw/ip_dummynet.c   (props changed)
  stable/8/sys/netinet/ipfw/ip_fw2.c   (props changed)
  stable/8/sys/netinet/ipfw/ip_fw_nat.c   (props changed)
  stable/8/sys/netinet/ipfw/ip_fw_pfil.c   (props changed)
  stable/8/sys/netipx/spx_reass.c   (props changed)
  stable/8/sys/xen/evtchn.h   (props changed)
  stable/8/sys/xen/hypervisor.h   (props changed)
  stable/8/sys/xen/xen_intr.h   (props changed)

Modified: stable/8/sys/netinet/ip_output.c
--- stable/8/sys/netinet/ip_output.c	Fri Aug 14 23:44:59 2009	(r196234)
+++ stable/8/sys/netinet/ip_output.c	Sat Aug 15 00:04:12 2009	(r196235)
@@ -53,6 +53,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/ucred.h>
 #include <net/if.h>
+#include <net/if_llatbl.h>
 #include <net/netisr.h>
 #include <net/pfil.h>
 #include <net/route.h>
@@ -201,9 +202,12 @@ again:
 	if (ro->ro_rt && ((ro->ro_rt->rt_flags & RTF_UP) == 0 ||
 			  dst->sin_family != AF_INET ||
 			  dst->sin_addr.s_addr != ip->ip_dst.s_addr)) {
-		if (!nortfree)
+		if (!nortfree) {
+			LLE_FREE(ro->ro_lle);
+		}
 		ro->ro_rt = (struct rtentry *)NULL;
+		ro->ro_lle = (struct llentry *)NULL;
 	if (ro->ro_rt == NULL && fwd_tag == NULL) {

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