Re: [PATCH bpf] xsk: fix backpressure mechanism on Tx

patchwork-bot+netdevbpf
2022-08-31T19:00:38Z

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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