On Mon, 29 Aug 2005, Frank Borich wrote:
> I have a controller with a firmware bug that mishandles
> underrun situations for inquiry commands. It correctly
> sets the FCP_RESID_UNDER flag however it miscalculates
> the FCP_RESID count. The 7.05.00 Qlogic driver for 2.4.x
> kernels thinks frame(s) were lost and retries the command
> 20 times with no success:
>
>
> if (!(scsi_status & SS_RESIDUAL_UNDER)) {
> ha->dropped_frame_error_cnt++;
> CMD_RESULT(cp) = DID_BUS_BUSY <<
> 16;
> DEBUG2(printk(KERN_INFO
> "scsi(%ld): Dropped "
> "frame(s) detected (%x
> of %x "
> "bytes)...retrying
> command.\n",
> ha->host_no,
> resid,
> CMD_XFRLEN(cp));)
> break;
> }
>
Interesting, could you submit a support a problem report here:
http://connection.qlogic.com/support/report/index.asp?id=csg
this will insure, this gets routed through the proper channels.
7.05.00 uses an older 23xx firmware.
Might be best if we had a FC trace as well, I'm sure the FW folks will
be interested to see what's comming back on the wire.
> Just wondering why the 8.00.02 driver for 2.6.x kernels did not
> detect this transport error ?
>
Did you enable the proper debug settings for this driver? This driver
has the dropped-frame check as well...
IAC: route this through tech-support.
> Latest Emulex and LSI drivers did
> not detect this either ???
>
--
av
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