net: ethernet: mtk_eth_soc: fix tx throughput regression with direct 1G links
authorFelix Fietkau <nbd@nbd.name>
Fri, 24 Mar 2023 14:04:04 +0000 (15:04 +0100)
committerJakub Kicinski <kuba@kernel.org>
Wed, 29 Mar 2023 06:23:50 +0000 (23:23 -0700)
commit07b3af42d8d528374d4f42d688bae86eeb30831a
tree4553c4e0a42768805da7dcb0d53666f432e6fc71
parent917fd7d6cdda179fdced2ebb060a9cda517d76e0
net: ethernet: mtk_eth_soc: fix tx throughput regression with direct 1G links

Using the QDMA tx scheduler to throttle tx to line speed works fine for
switch ports, but apparently caused a regression on non-switch ports.

Based on a number of tests, it seems that this throttling can be safely
dropped without re-introducing the issues on switch ports that the
tx scheduling changes resolved.

Link: https://lore.kernel.org/netdev/trinity-92c3826f-c2c8-40af-8339-bc6d0d3ffea4-1678213958520@3c-app-gmx-bs16/
Fixes: f63959c7eec3 ("net: ethernet: mtk_eth_soc: implement multi-queue support for per-port queues")
Reported-by: Frank Wunderlich <frank-w@public-files.de>
Reported-by: Daniel Golle <daniel@makrotopia.org>
Tested-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230324140404.95745-1-nbd@nbd.name
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
drivers/net/ethernet/mediatek/mtk_eth_soc.c