netdev - Re: [PATCH v4 1/1] net: macb: Shorten max_tx_len to 4KiB

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: <ZF5XFhm6urnFEqLH@corigine.com>
Date: Fri, 12 May 2023 17:11:18 +0200
From: Simon Horman <simon.horman@...igine.com>
To: daire.mcnamara@...rochip.com
Cc: nicolas.ferre@...rochip.com, claudiu.beznea@...rochip.com,
	davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, netdev@...r.kernel.org,
	conor.dooley@...rochip.com
Subject: Re: [PATCH v4 1/1] net: macb: Shorten max_tx_len to 4KiB - 56 on mpfs

On Fri, May 12, 2023 at 01:20:32PM +0100, daire.mcnamara@...rochip.com wrote:
> From: Daire McNamara <daire.mcnamara@...rochip.com>
> 
> On mpfs, with SRAM configured for 4 queues, setting max_tx_len
> to GEM_TX_MAX_LEN=0x3f0 results multiple AMBA errors.
> Setting max_tx_len to (4KiB - 56) removes those errors.
> 
> The details are described in erratum 1686 by Cadence
> 
> The max jumbo frame size is also reduced for mpfs to (4KiB - 56).
> 
> Signed-off-by: Daire McNamara <daire.mcnamara@...rochip.com>

Reviewed-by: Simon Horman <simon.horman@...igine.com>