From: patchwork-bot+netdevbpf@kernel.org
To: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
netdev@vger.kernel.org, magnus.karlsson@intel.com,
bjorn@kernel.org, brouer@redhat.com, alexandr.lobakin@intel.com
Subject: Re: [PATCH bpf] xsk: fix l2fwd for copy mode + busy poll combo
Date: Thu, 07 Apr 2022 21:10:12 +0000 [thread overview]
Message-ID: <164936581210.6878.17567459374327495155.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20220406155804.434493-1-maciej.fijalkowski@intel.com>
Hello:
This patch was applied to bpf/bpf.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:
On Wed, 6 Apr 2022 17:58:04 +0200 you wrote:
> While checking AF_XDP copy mode combined with busy poll, strange
> results were observed. rxdrop and txonly scenarios worked fine, but
> l2fwd broke immediately.
>
> After a deeper look, it turned out that for l2fwd, Tx side was exiting
> early due to xsk_no_wakeup() returning true and in the end
> xsk_generic_xmit() was never called. Note that AF_XDP Tx in copy mode is
> syscall steered, so the current behavior is broken.
>
> [...]
Here is the summary with links:
- [bpf] xsk: fix l2fwd for copy mode + busy poll combo
https://git.kernel.org/bpf/bpf/c/8de8b71b787f
You are awesome, thank you!
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prev parent reply other threads:[~2022-04-07 21:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-06 15:58 [PATCH bpf] xsk: fix l2fwd for copy mode + busy poll combo Maciej Fijalkowski
2022-04-07 21:10 ` patchwork-bot+netdevbpf [this message]
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