netdev - Re: [PATCH bpf] samples/bpf: consider frame size in tx

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: <5d8ac9e9-1de7-116b-4e1a-8814cb01fc8b@iogearbox.net>
Date:   Fri, 7 May 2021 01:29:51 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Magnus Karlsson <magnus.karlsson@...il.com>,
        magnus.karlsson@...el.com, bjorn@...nel.org, ast@...nel.org,
        netdev@...r.kernel.org, jonathan.lemon@...il.com
Cc:     bpf@...r.kernel.org, maciej.fijalkowski@...el.com
Subject: Re: [PATCH bpf] samples/bpf: consider frame size in tx_only of
 xdpsock sample

On 5/6/21 2:43 PM, Magnus Karlsson wrote:
> From: Magnus Karlsson <magnus.karlsson@...el.com>
> 
> Fix the tx_only micro-benchmark in xdpsock to take frame size into
> consideration. It was hardcoded to the default value of frame_size
> which is 4K. Changing this on the command line to 2K made half of the
> packets illegal as they were outside the umem and were therefore
> discarded by the kernel.
> 
> Fixes: 46738f73ea4f ("samples/bpf: add use of need_wakeup flag in xdpsock")
> Signed-off-by: Magnus Karlsson <magnus.karlsson@...el.com>

Applied, thanks!