Date: Thu, 16 Sep 2004 03:56:24 -0000 From: Pyun YongHyeon <yongari@kt-is.co.kr> To: pf4freebsd@freelists.org Subject: [pf4freebsd] Re: nfsd send error 1 probably caused by pf ? Message-ID: <20031114092424.GA32359@kt-is.co.kr> In-Reply-To: <3FB3EBBA.5070405@kasimir.com> References: <3FB2ACA6.7030302@kasimir.com> <20031112220709.GO17343@insomnia.benzedrine.cx> <3FB2B203.1030704@kasimir.com> <3FB2B5AB.50601@kasimir.com> <20031113163911.GR17343@insomnia.benzedrine.cx> <3FB3EBBA.5070405@kasimir.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, Nov 13, 2003 at 09:38:18PM +0100, Florian C. Smeets wrote: > Daniel Hartmeier wrote: > > On Wed, Nov 12, 2003 at 11:35:23PM +0100, Florian C. Smeets wrote: > > > > > >>I get a lot of these BAD state messages with debug leve misc: > >> > >>Nov 12 23:32:25 bender kernel: pf: BAD state: TCP 172.30.1.1:2049 > >>172.30.1.1:2049 172.30.1.2:1021 [lo=2879006265 high=2879023465 > >>win=16588 modulator=0] [lo=1139973024 high=1139974122 win=17200 > >>modulator=0] 4:4 A > >> seq=1139974472 ack=2879006265 len=1448 ackskew=0 pkts=406886:392362 > >>dir=in,rev > > > > > > To prove this theory, you'd need a tcpdump -nvvvS of the entire > > connection (or at least a couple of packets before the first BAD state > > message). The connection doesn't use window scaling, so either the peer > > is at fault or pf saw a packet reducing your window size which got lost > > before the peer saw it. How regularly does this occur? > > > > I'm going to test this in the weekend. I don't have much time at the moment. > > If i get the time i'm going to try to reproduce this at work tomorrow. > > Thanks alot for your help, > flo > It seems that your problem is reproducable on my SMP machine. I used a single rule 'pass out on xl0 keep state'. However, I can't see 'nfsd send error' message. nfs client works well even though pf still outputs 'BAD state' message. Does your xl interface has a facility of H/W checksum offload? (check with `ifconfig xl0`) -- Pyun YongHyeon <http://www.kr.freebsd.org/~yongari>;
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20031114092424.GA32359>