tree 8c6f216fbeb85c6b7a66e6b513edb94f5620c7cd
parent 7b592f6168e3091bc0868812b6a4a3126be5b82d
author Shannon Nelson <shannon.nelson@intel.com> 1404979100 +0000
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> 1409125214 -0700

i40e/i40evf: add max buf len to aq debug print helper

There is at least one case in the Firmware API where the response to a
command changes the buffer size field in the AQ descriptor to a larger
number than what the request's buffer size started as.  This is in addition
to setting an error flag and is in order to tell the requester how much
larger a buffer is required for the answer.  We need to be sure not to
use that number when dumping the contents of the data buffer because it
can send us into the weeds and generate an invalid pointer exception.

This patch adds a max buffer size parameter to the print helper to be
sure the code knows when to stop.

Change-ID: Ib84f7ed72140fe9d600086d8f2002fc5d8753092
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>