From: patchwork-bot+netdevbpf@kernel.org
To: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
andrii@kernel.org, netdev@vger.kernel.org,
magnus.karlsson@intel.com, bjorn@kernel.org
Subject: Re: [PATCH bpf] xsk: fix backpressure mechanism on Tx
Date: Wed, 31 Aug 2022 19:00:16 +0000 [thread overview]
Message-ID: <166197241664.25924.2251961834366979547.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20220830121705.8618-1-maciej.fijalkowski@intel.com>
Hello:
This patch was applied to bpf/bpf.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:
On Tue, 30 Aug 2022 14:17:05 +0200 you wrote:
> Commit d678cbd2f867 ("xsk: Fix handling of invalid descriptors in XSK TX
> batching API") fixed batch API usage against set of descriptors with
> invalid ones but introduced a problem when AF_XDP SW rings are smaller
> than HW ones. Mismatch of reported Tx'ed frames between HW generator and
> user space app was observed. It turned out that backpressure mechanism
> became a bottleneck when the amount of produced descriptors to CQ is
> lower than what we grabbed from XSK Tx ring.
>
> [...]
Here is the summary with links:
- [bpf] xsk: fix backpressure mechanism on Tx
https://git.kernel.org/bpf/bpf/c/c00c4461689e
You are awesome, thank you!
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prev parent reply other threads:[~2022-08-31 19:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-30 12:17 [PATCH bpf] xsk: fix backpressure mechanism on Tx Maciej Fijalkowski
2022-08-31 19:00 ` patchwork-bot+netdevbpf [this message]
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