linux-kernel - Re: [PATCH net] xsk: Bring back busy polling support

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Message-Id: 
 <173656203824.2269660.1465045234305425925.git-patchwork-notify@kernel.org>
Date: Sat, 11 Jan 2025 02:20:38 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Stanislav Fomichev <sdf@...ichev.me>
Cc: netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, linux-kernel@...r.kernel.org,
 bpf@...r.kernel.org, horms@...nel.org, ast@...nel.org, daniel@...earbox.net,
 hawk@...nel.org, john.fastabend@...il.com, bjorn@...nel.org,
 magnus.karlsson@...el.com, maciej.fijalkowski@...el.com,
 jonathan.lemon@...il.com, jdamato@...tly.com, mkarsten@...terloo.ca
Subject: Re: [PATCH net] xsk: Bring back busy polling support

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Wed,  8 Jan 2025 16:34:36 -0800 you wrote:
> Commit 86e25f40aa1e ("net: napi: Add napi_config") moved napi->napi_id
> assignment to a later point in time (napi_hash_add_with_id). This breaks
> __xdp_rxq_info_reg which copies napi_id at an earlier time and now
> stores 0 napi_id. It also makes sk_mark_napi_id_once_xdp and
> __sk_mark_napi_id_once useless because they now work against 0 napi_id.
> Since sk_busy_loop requires valid napi_id to busy-poll on, there is no way
> to busy-poll AF_XDP sockets anymore.
> 
> [...]

Here is the summary with links:
  - [net] xsk: Bring back busy polling support
    https://git.kernel.org/netdev/net/c/5ef44b3cb43b

You are awesome, thank you!
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