Subject: Re: [PATCH v2] net: stmmac: only enable DMA interrupts when ready

From: [email-masked]
Date: Fri, 25 Feb 2022 10:50:11 +0000

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <[email-masked]>:

On Thu, 24 Feb 2022 12:38:29 +0100 you wrote:
> In this driver's ->ndo_open() callback, it enables DMA interrupts,
> starts the DMA channels, then requests interrupts with request_irq(),
> and then finally enables napi.
> 
> If RX DMA interrupts are received before napi is enabled, no processing
> is done because napi_schedule_prep() will return false.  If the network
> has a lot of broadcast/multicast traffic, then the RX ring could fill up
> completely before napi is enabled.  When this happens, no further RX
> interrupts will be delivered, and the driver will fail to receive any
> packets.
> 
> [...]

Here is the summary with links:
  - [v2] net: stmmac: only enable DMA interrupts when ready
    https://git.kernel.org/netdev/net/c/087a7b944c5d

You are awesome, thank you!
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