lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 15 Apr 2015 21:30:57 -0700 From: Eric Dumazet <eric.dumazet@...il.com> To: Herbert Xu <herbert@...dor.apana.org.au> Cc: stefano.stabellini@...citrix.com, george.dunlap@...citrix.com, Jonathan.Davies@...rix.com, xen-devel@...ts.xensource.com, wei.liu2@...rix.com, Ian.Campbell@...rix.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, edumazet@...gle.com, paul.durrant@...rix.com, christoffer.dall@...aro.org, felipe.franciosi@...rix.com, linux-arm-kernel@...ts.infradead.org, david.vrabel@...rix.com Subject: Re: [Xen-devel] "tcp: refine TSO autosizing" causes performance regression on Xen On Thu, 2015-04-16 at 12:20 +0800, Herbert Xu wrote: > Eric Dumazet <eric.dumazet@...il.com> 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. Right but we are talking of performance hints, on quite basic VM setup. Here the guest would use xen and this hint would apply. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists