Date: Tue, 3 Aug 2010 15:53:30 +0000 (UTC) From: Attilio Rao <attilio@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r210806 - projects/sv/sys/net Message-ID: <201008031553.o73FrUim089825@svn.freebsd.org>
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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)) {
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