From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DDFA2C433FE for ; Fri, 6 May 2022 00:10:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1386365AbiEFANp (ORCPT ); Thu, 5 May 2022 20:13:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48684 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353543AbiEFANo (ORCPT ); Thu, 5 May 2022 20:13:44 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A643D506CC; Thu, 5 May 2022 17:10:03 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3682261FC6; Fri, 6 May 2022 00:10:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A6B9C385A4; Fri, 6 May 2022 00:10:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1651795802; bh=SkW1gvna9Jui2+It6Mco0C/AQsEKhZD48eOJilj0TN0=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=QpcWJyqokb21XPQGjuEgHSCCNGmYFCVQnwgBauXHPtvNuU2AAlyUPEyvmeFowjDDH KBeegr1lZ1mMOFORbwzFYUmbVSmhAJNGs+SVATHlQKD2iED3Qh4/0jNsIwN77KVtAb GAwGntL0bA/Ay9b9e15uTFMwNmLhJmm9orRllnd4r8L++Mq1Ab2ZWKqyPllB9ic0Jk B+R9z7kprrsUim/f3y2FQMN1/KPDzjLXFsJVJ4EdSwHLqDEDSWUY6qh4owWCPUKfVr V7ls6tjTWd6jBuMbPwHnONnXVeu1eLIFBJL37cMOaEVV5wsFhLy+CArlc2MgC6Sk7s sCC6Dkz6Ta1VA== Date: Thu, 5 May 2022 17:10:00 -0700 From: Jakub Kicinski To: Marc Kleine-Budde Cc: Steffen Trumtrar , linux-crypto@vger.kernel.org, io-uring@vger.kernel.org, kernel@pengutronix.de, Horia =?UTF-8?B?R2VhbnTEgw==?= , Pankaj Gupta , Gaurav Jain , Jens Axboe , Pavel Begunkov , Boris Pismenny , John Fastabend , Daniel Borkmann , netdev@vger.kernel.org Subject: Re: [BUG] Layerscape CAAM+kTLS+io_uring Message-ID: <20220505171000.48a9155b@kernel.org> In-Reply-To: <20220505192046.hczmzg7k6tz2rjv3@pengutronix.de> References: <878rrqrgaj.fsf@pengutronix.de> <20220505192046.hczmzg7k6tz2rjv3@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Thu, 5 May 2022 21:20:46 +0200 Marc Kleine-Budde wrote: > Hello, > > no one seems to care about this problem. :/ > > Maybe too many components are involved, I'm the respective maintainers > on Cc. > > Cc += the CAAM maintainers > Cc += the io_uring maintainers > Cc += the kTLS maintainers > > On 27.04.2022 10:20:40, Steffen Trumtrar wrote: > > Hi all, > > > > I have a Layerscape-1046a based board where I'm trying to use a > > combination of liburing (v2.0) with splice, kTLS and CAAM (kernel > > v5.17). The problem I see is that on shutdown the last bytes are > > missing. It looks like io_uring is not waiting for all completions > > from the CAAM driver. > > > > With ARM-ASM instead of the CAAM, the setup works fine. > > What's the difference between the CAAM and ARM-ASM crypto? Without > looking into the code I think the CAAM is asynchron while ARM-ASM is > synchron. Is this worth investigating? Sounds like 20ffc7adf53a ("net/tls: missing received data after fast remote close")