Hello:
This patch was applied to netdev/net.git (main)
by David S. Miller <davem@xxxxxxxxxxxxx>:
On Fri, 31 Jan 2025 00:31:39 -0800 you wrote:
> Commit 4094871db1d6 ("udp: only do GSO if # of segs > 1") avoided GSO
> for small packets. But the kernel currently dismisses GSO requests only
> after checking MTU/PMTU on gso_size. This means any packets, regardless
> of their payload sizes, could be dropped when PMTU becomes smaller than
> requested gso_size. We encountered this issue in production and it
> caused a reliability problem that new QUIC connection cannot be
> established before PMTU cache expired, while non GSO sockets still
> worked fine at the same time.
>
> [...]
Here is the summary with links:
- [v3,net] udp: gso: do not drop small packets when PMTU reduces
https://git.kernel.org/netdev/net/c/235174b2bed8
You are awesome, thank you!
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