Date: Thu, 12 Dec 2002 01:16:54 +0000 From: Ian Dowse <iedowse@maths.tcd.ie> To: Luigi Rizzo <luigi@FreeBSD.ORG> Cc: Alexander Langer <alex@big.endian.de>, Patrick Soltani <psoltani@ultradns.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: panic: icmp_error: bad length Message-ID: <200212120116.aa58562@salmon.maths.tcd.ie> In-Reply-To: Your message of "Wed, 11 Dec 2002 17:02:27 PST." <20021211170227.A79864@xorpc.icir.org>
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In message <20021211170227.A79864@xorpc.icir.org>, Luigi Rizzo writes:
>the diagnosis looks reasonable, though i do not remember changing
>anything related to this between 4.6 and 4.7 so i wonder why the
>error did not appear in earlier versions of the code.
Yes strange - actually, it looks like the "THERE IS NO FUNCTIONAL
OR EXTERNAL API CHANGE IN THIS COMMIT" commit may be to blame :-)
Some fragments below.
Ian
bridge.c 1.16.2.2:
+#ifdef PFIL_HOOKS
...
- * before calling the firewall, swap fields the same as IP does.
- * here we assume the pkt is an IP one and the header is contiguous
...
- ip = mtod(m0, struct ip *);
- NTOHS(ip->ip_len);
- NTOHS(ip->ip_off);
ip_fw.c 1.131.2.34:
- if (0 && BRIDGED) { /* not yet... */
- offset = (ntohs(ip->ip_off) & IP_OFFMASK);
+ if (BRIDGED) { /* bridged packets are as on the wire */
+ ip_off = ntohs(ip->ip_off);
ip_len = ntohs(ip->ip_len);
} else {
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