Re: [Xen-devel] "tcp: refine TSO autosizing" causes performance regression on Xen

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

Eric Dumazet <eric.dumazet@xxxxxxxxx> wrote:
>
> We already have netdev->gso_max_size and netdev->gso_max_segs
> which are cached into sk->sk_gso_max_size & sk->sk_gso_max_segs

It is quite dangerous to attempt tricks like this because a
tc redirection or netfilter nat could change the destination
device rendering such hints incorrect.

Cheers,
-- 
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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