Re: [PATCH v2 0/7] net: ethernet: ti: cpsw: support placing CPDMA descriptors into DDR

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Grygorii Strashko <grygorii.strashko@xxxxxx>
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.
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux