linux-kernel - Re: [PATCH 1/6] RDMA/rxe: handle ICRC correctly on big endian systems

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: <20250130135219.GH2120662@ziepe.ca>
Date: Thu, 30 Jan 2025 09:52:19 -0400
From: Jason Gunthorpe <jgg@...pe.ca>
To: Eric Biggers <ebiggers@...nel.org>
Cc: Zhu Yanjun <yanjun.zhu@...ux.dev>, linux-rdma@...r.kernel.org,
	Mustafa Ismail <mustafa.ismail@...el.com>,
	Tatyana Nikolova <tatyana.e.nikolova@...el.com>,
	Leon Romanovsky <leon@...nel.org>,
	Zhu Yanjun <zyjzyj2000@...il.com>,
	Bernard Metzler <bmt@...ich.ibm.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/6] RDMA/rxe: handle ICRC correctly on big endian systems

On Wed, Jan 29, 2025 at 06:04:03PM -0800, Eric Biggers wrote:
> > From a spec perspective is *total nonsense* to describe something the
> > spec explicitly says is big endian as little endian.
> 
> The spec also says "The least significant bit, most significant byte first
> ordering of the packet does not apply to the ICRC field."

I'm pretty sure this is text trying to explain the Remainder -> ICRC
transformation in Figure 57.

Jason