mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-04-29 02:19:54 -04:00
b14ad90c99
Grygorii Strashko says: ==================== net: ethernet: ti: cpsw: support placing CPDMA descriptors into DDR 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. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.