Re: [PATCH net-next 0/2] net: ipa: GSI channel flow control

From: Jakub Kicinski
Date: Fri Nov 26 2021 - 13:32:42 EST


On Wed, 24 Nov 2021 13:44:14 -0600 Alex Elder wrote:
> Starting with IPA v4.2, endpoint DELAY mode (which prevents data
> transfer on TX endpoints) does not work properly. To address this,
> changes were made to allow underlying GSI channels to be put into
> a "flow controlled" state, which achieves a similar objective.
> The first patch in this series implements the flow controlled
> channel state and the commands used to control it. It arranges
> to use the new mechanism--instead of DELAY mode--for IPA v4.2+.
>
> In IPA v4.11, the notion of GSI channel flow control was enhanced,
> and implemented in a slightly different way. For the most part this
> doesn't affect the way the IPA driver uses flow control, but the
> second patch adds support for the newer mechanism.

Applied, thanks.