Messages in this thread | | | Date | Thu, 20 Jun 2002 15:19:51 +0200 | From | Andrea Arcangeli <> | Subject | Re: 2.4.19pre10aa3 |
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On Thu, Jun 20, 2002 at 03:44:59PM +0400, Andrey Nekrasov wrote: > Hello Andrea Arcangeli, > > > Kernel 2.4.19pre10aa3 + hidden_arp (from LVS) > > > > ... > Intel(R) PRO/100 Fast Ethernet Adapter - Loadable driver, ver 1.8.38 > Copyright (c) 2002 Intel Corporation > > eth0: Intel(R) 8255x-based Ethernet Adapter > Mem:0xfb101000 IRQ:18 Speed:100 Mbps Dx:Full > Hardware receive checksums enabled > cpu cycle saver enabled > ... > > ... > eth0 e100_wait_exec_cmd: Wait failed. > hw tcp v4 csum failed > hw tcp v4 csum failed > hw tcp v4 csum failed > hw tcp v4 csum failed > hw tcp v4 csum failed > hw tcp v4 csum failed > hw tcp v4 csum failed > ... > > > Than this message is caused? It something serious also can be problems?
probably a driver issue with hw checksum. btw interestingly the stack computes the cksum by hand for every tcp incoming packet (unless ip_summed is set by the driver to CHECKSUM_UNNECESSARY), this is how it noticed the hw checksum was wrong. I guess it's either an e100 driver issue, or an hardware issue. Maybe it's setting DF_CSUM_OFFLOAD for your card despite your hardware doesn't support that feature, or maybe there's something wrong in the logic that sets the skb->csum.
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