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From: Attilio Rao <attilio@FreeBSD.org>
Date: Tue, 3 Aug 2010 15:53:30 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-projects@freebsd.org
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Subject: svn commit: r210806 - projects/sv/sys/net
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Author: attilio
Date: Tue Aug 3 15:53:29 2010
New Revision: 210806
URL: http://svn.freebsd.org/changeset/base/210806
Log:
Add some debugging aid and confirm revision does the same thing
as above-mentioned functions
Modified:
projects/sv/sys/net/netdump_client.c
Modified: projects/sv/sys/net/netdump_client.c
==============================================================================
--- projects/sv/sys/net/netdump_client.c Tue Aug 3 15:40:42 2010 (r210805)
+++ projects/sv/sys/net/netdump_client.c Tue Aug 3 15:53:29 2010 (r210806)
@@ -762,6 +762,15 @@ nd_handle_ip(struct mbuf **mb)
ip = mtod(m, struct ip *);
}
+#ifdef INVARIANTS
+ if (((ntohl(ip->ip_dst.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET ||
+ (ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) &&
+ (m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) == 0) {
+ NETDDEBUG("nd_handle_ip: Bad IP header (RFC1122)\n");
+ return;
+ }
+#endif
+
/* Checksum */
if (m->m_pkthdr.csum_flags & CSUM_IP_CHECKED) {
if (!(m->m_pkthdr.csum_flags & CSUM_IP_VALID)) {