netdev - Re: [PATCH net 1/1] ice: xsk: clear status

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Date:   Tue, 30 Nov 2021 12:20:08 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Tony Nguyen <anthony.l.nguyen@...el.com>
Cc:     davem@...emloft.net, kuba@...nel.org, maciej.fijalkowski@...el.com,
        netdev@...r.kernel.org, magnus.karlsson@...el.com, ast@...nel.org,
        daniel@...earbox.net, hawk@...nel.org, john.fastabend@...il.com,
        bpf@...r.kernel.org, alexandr.lobakin@...el.com
Subject: Re: [PATCH net 1/1] ice: xsk: clear status_error0 for each allocated desc

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <davem@...emloft.net>:

On Mon, 29 Nov 2021 15:17:46 -0800 you wrote:
> From: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
> 
> Fix a bug in which the receiving of packets can stop in the zero-copy
> driver. Ice HW ignores 3 lower bits from QRX_TAIL register, which means
> that tail is bumped only on intervals of 8. Currently with XSK RX
> batching in place, ice_alloc_rx_bufs_zc() clears the status_error0 only
> of the last descriptor that has been allocated/taken from the XSK buffer
> pool. status_error0 includes DD bit that is looked upon by the
> ice_clean_rx_irq_zc() to tell if a descriptor can be processed.
> 
> [...]

Here is the summary with links:
  - [net,1/1] ice: xsk: clear status_error0 for each allocated desc
    https://git.kernel.org/netdev/net/c/d1ec975f9fa6

You are awesome, thank you!
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