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>
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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: > >=20 > >=20 > >>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=20 > >>172.30.1.1:2049 172.30.1.2:1021 [lo=3D2879006265 high=3D2879023465=20 > >>win=3D16588 modulator=3D0] [lo=3D1139973024 high=3D1139974122 win=3D= 17200=20 > >>modulator=3D0] 4:4 A > >> seq=3D1139974472 ack=3D2879006265 len=3D1448 ackskew=3D0 pkts=3D40= 6886:392362=20 > >>dir=3Din,rev > >=20 > >=20 > > 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 sta= te > > message). The connection doesn't use window scaling, so either the p= eer > > is at fault or pf saw a packet reducing your window size which got l= ost > > before the peer saw it. How regularly does this occur? > >=20 >=20 > I'm going to test this in the weekend. I don't have much time at the m= oment. >=20 > If i get the time i'm going to try to reproduce this at work tomorrow. >=20 > Thanks alot for your help, > flo >=20 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`) --=20 Pyun YongHyeon <http://www.kr.freebsd.org/~yongari>;
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