On Tue, Jan 31, 2017 at 11:12:25PM -0500, David Miller wrote: > From: Corentin Labbe <clabbe.montj...@gmail.com> > Date: Tue, 31 Jan 2017 10:11:48 +0100 > > > The stmmac driver run TX completion under NAPI but without checking > > the work done by the TX completion function. > > The current behavior is correct and completely intentional. > > A driver should _never_ account TX work to the NAPI poll budget. > > This is because TX liberation is orders of magnitude cheaper than > receiving a packet, and such SKB freeing makes more SKBs available > for RX processing. > > Therefore, TX work should never count against the NAPI budget. > > Please do not fix something which is not broken.
So at least the documentation I read must be fixed (https://wiki.linuxfoundation.org/networking/napi) So perhaps the best way is to do like intel igb/ixgbe, keeping under NAPI until the stmmac_tx_clean function said that it finish handling the queue ? Regards Corentin Labbe
