From: Grygorii Strashko <grygorii.strashko@ti.com>
Date: Fri, 6 Jan 2017 14:07:28 -0600
This series intended to add support for placing CPDMA descriptors into DDR by
introducing new module parameter "descs_pool_size" to specify size of descriptor's
pool. The "descs_pool_size" defines total number of CPDMA
CPPI descriptors to be used for both ingress/egress packets
processing. If not specified - the default value 256 will be used
which will allow to place descriptor's pool into the internal CPPI
RAM.
In addition, added ability to re-split CPDMA pool of descriptors between RX and TX
path via ethtool '-G' command wich will allow to configure and fix number
of descriptors used by RX and TX path, which, then, will be split between
RX/TX channels proportionally depending on number of RX/TX channels and
its weight.
This allows significantly to reduce UDP packets drop rate
for bandwidth >301 Mbits/sec (am57x).
Before enabling this feature, the am437x SoC has to be fixed as it's proved
that it's not working when CPDMA descriptors placed in DDR.
So, the patch 1 fixes this issue.
Series applied to net-next, thanks.