Re: [PATCH v2 net] splice: do not checksum AF_UNIX sockets

Hello:

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

On Mon, 9 Dec 2024 21:06:48 -0800 you wrote:

When `skb_splice_from_iter` was introduced, it inadvertently added checksumming for AF_UNIX sockets. This resulted in significant slowdowns, for example when using sendfile over unix sockets.

Using the test code in [1] in my test setup (2G single core qemu), the client receives a 1000M file in:

• without the patch: 1482ms (+/- 36ms)
• with the patch: 652.5ms (+/- 22.9ms)

[...]

Here is the summary with links: - [v2,net] splice: do not checksum AF_UNIX sockets https://git.kernel.org/netdev/net/c/6bd8614fc2d0

You are awesome, thank you!