netdev - Re: [PATCH net-next 4/4] net: add dedicated kmem

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230202211105.1ce7f83f@kernel.org>
Date:   Thu, 2 Feb 2023 21:11:05 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        eric.dumazet@...il.com, Alexander Duyck <alexanderduyck@...com>,
        Soheil Hassas Yeganeh <soheil@...gle.com>
Subject: Re: [PATCH net-next 4/4] net: add dedicated kmem_cache for
 typical/small skb->head

On Thu,  2 Feb 2023 18:58:01 +0000 Eric Dumazet wrote:
> +/* We want SKB_SMALL_HEAD_CACHE_SIZE to not be a power of two. */

Why is that?  Is it to prevent potential mixing up of objects from 
the cache with objects from general slabs (since we only do a
end_offset == SKB_SMALL_HEAD_HEADROOM check)?