tree ed92c20990d708941c7c40588fc2c10d48c7d15a
parent 653954825dce4015d6418ddb4de7826205f44c87
author Alexander Duyck <alexander.h.duyck@intel.com> 1279547027 +0000
committer David S. Miller <davem@davemloft.net> 1279596215 -0700

e1000: allow option to limit number of descriptors down to 48 per ring

This change makes it possible to limit the number of descriptors down to 48
per ring.  The reason for this change is to address a variation on hardware
errata 10 for 82546GB in which descriptors will be lost if more than 32
descriptors are fetched and the PCI-X MRBC is 512.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Emil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>