Thread (8 messages) flat view 8 messages, 3 authors, 5d ago

Re: [PATCH net-next 0/2] net: stmmac: Cleanup rx coalescing computation when using RIWT

From: patchwork-bot+netdevbpf@kernel.org
Date: 2026-08-04 01:51:04
Also in: linux-arm-kernel, lkml

Hello:

This series was applied to netdev/net-next.git (main)
by Jakub Kicinski [off-list ref]:

On Sun,  2 Aug 2026 13:40:12 +0200 you wrote:
Currently when configuring interrupt coalescing on devices that relies
on the Receive Interrupt Watchdog Timer feature of dwmac, the
computation of the RIWT timings leads to off-by-one values when
reporting the timings back to userspace.

RIWT works by arming a watchdog timer upon receiving frames with the RI
bit not set in the descriptor. The timer duration is expressed in units
of 256 stmmac clock ticks, and therefore requires a bit of computation
to derive it :

[...]
Here is the summary with links:
  - [net-next,1/2] net: stmmac: ethtool: Comment the magic numbers in RIWT computation
    https://git.kernel.org/netdev/net-next/c/b6a89c8ef34f
  - [net-next,2/2] net: stmmac: ethtool: Address off-by-one when reading the coal rx-usecs
    https://git.kernel.org/netdev/net-next/c/ae88f78bc4eb

You are awesome, thank you!
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