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Message-ID: <f733e4630e424e0aaf402d5d840cb6e2@AcuMS.aculab.com>
Date: Tue, 8 May 2018 09:39:58 +0000
From: David Laight <David.Laight@...LAB.COM>
To: 'Salvatore Mesoraca' <s.mesoraca16@...il.com>, Florian Fainelli
<f.fainelli@...il.com>
CC: Andrew Lunn <andrew@...n.ch>, "linux-kernel@...r.kernel.org"
<linux-kernel@...r.kernel.org>, Kernel Hardening
<kernel-hardening@...ts.openwall.com>, "netdev@...r.kernel.org"
<netdev@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>, Kees Cook
<keescook@...omium.org>, Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Subject: RE: [PATCH v2] net: dsa: drop some VLAs in switch.c
From: Salvatore Mesoraca
> Sent: 07 May 2018 20:03
...
> This optimization will save us an allocation when number of ports is
> less than 32 or 64 (depending on arch).
> IMHO it's useful, if you consider that, right now, DSA works only with
> 12-ports switches.
Why not just error out if the number of ports is greater than the compile-time
limit?
Worry about dynamic allocation if you need a lot more than 64 ports.
David
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