Module Name: src
Committed By: riz
Date: Fri Nov 6 00:46:50 UTC 2015
Modified Files:
src/sys/netinet [netbsd-7]: if_arp.c
Log Message:
Pull up following revision(s) (requested by ozaki-r in ticket #985):
sys/netinet/if_arp.c: revision 1.160
Add sysctl to selectively log arp packets from unknown network. (Adrien URBAN).
To generate a diff of this commit:
cvs rdiff -u -r1.158 -r1.158.2.1 src/sys/netinet/if_arp.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/netinet/if_arp.c
diff -u src/sys/netinet/if_arp.c:1.158 src/sys/netinet/if_arp.c:1.158.2.1
--- src/sys/netinet/if_arp.c:1.158 Tue Jun 3 01:24:32 2014
+++ src/sys/netinet/if_arp.c Fri Nov 6 00:46:50 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: if_arp.c,v 1.158 2014/06/03 01:24:32 ozaki-r Exp $ */
+/* $NetBSD: if_arp.c,v 1.158.2.1 2015/11/06 00:46:50 riz Exp $ */
/*-
* Copyright (c) 1998, 2000, 2008 The NetBSD Foundation, Inc.
@@ -68,7 +68,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_arp.c,v 1.158 2014/06/03 01:24:32 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_arp.c,v 1.158.2.1 2015/11/06 00:46:50 riz Exp $");
#include "opt_ddb.h"
#include "opt_inet.h"
@@ -194,6 +194,7 @@ static int arp_drainwanted;
static int log_movements = 1;
static int log_permanent_modify = 1;
static int log_wrong_iface = 1;
+static int log_unknown_network = 1;
/*
* this should be elsewhere.
@@ -1305,17 +1306,20 @@ arplookup1(struct mbuf *m, const struct
return (struct llinfo_arp *)rt->rt_llinfo;
if (create) {
- if (rt->rt_flags & RTF_GATEWAY)
- why = "host is not on local network";
- else if ((rt->rt_flags & RTF_LLINFO) == 0) {
+ if (rt->rt_flags & RTF_GATEWAY) {
+ if (log_unknown_network)
+ why = "host is not on local network";
+ } else if ((rt->rt_flags & RTF_LLINFO) == 0) {
ARP_STATINC(ARP_STAT_ALLOCFAIL);
why = "could not allocate llinfo";
} else
why = "gateway route is not ours";
- log(LOG_DEBUG, "arplookup: unable to enter address"
- " for %s@%s on %s (%s)\n",
- in_fmtaddr(*addr), lla_snprintf(ar_sha(ah), ah->ar_hln),
- (ifp) ? ifp->if_xname : "null", why);
+ if (why) {
+ log(LOG_DEBUG, "arplookup: unable to enter address"
+ " for %s@%s on %s (%s)\n", in_fmtaddr(*addr),
+ lla_snprintf(ar_sha(ah), ah->ar_hln),
+ (ifp) ? ifp->if_xname : "null", why);
+ }
if (rt->rt_refcnt <= 0 && (rt->rt_flags & RTF_CLONED) != 0) {
rtrequest(RTM_DELETE, rt_getkey(rt),
rt->rt_gateway, rt_mask(rt), rt->rt_flags, NULL);
@@ -1704,6 +1708,13 @@ sysctl_net_inet_arp_setup(struct sysctll
" interface"),
NULL, 0, &log_wrong_iface, 0,
CTL_NET,PF_INET, node->sysctl_num, CTL_CREATE, CTL_EOL);
+
+ sysctl_createv(clog, 0, NULL, NULL,
+ CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
+ CTLTYPE_INT, "log_unknown_network",
+ SYSCTL_DESCR("log ARP packets from non-local network"),
+ NULL, 0, &log_unknown_network, 0,
+ CTL_NET,PF_INET, node->sysctl_num, CTL_CREATE, CTL_EOL);
}
#endif /* INET */
