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 X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C83BC433E7 for ; Fri, 9 Oct 2020 10:32:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0343922277 for ; Fri, 9 Oct 2020 10:32:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387710AbgJIKcv (ORCPT ); Fri, 9 Oct 2020 06:32:51 -0400 Received: from mailout04.rmx.de ([94.199.90.94]:52814 "EHLO mailout04.rmx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730763AbgJIKcv (ORCPT ); Fri, 9 Oct 2020 06:32:51 -0400 Received: from kdin01.retarus.com (kdin01.dmz1.retloc [172.19.17.48]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mailout04.rmx.de (Postfix) with ESMTPS id 4C74CL2s4tz3qyJW; Fri, 9 Oct 2020 12:32:46 +0200 (CEST) Received: from mta.arri.de (unknown [217.111.95.66]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by kdin01.retarus.com (Postfix) with ESMTPS id 4C74Bl4qT1z2xGF; Fri, 9 Oct 2020 12:32:15 +0200 (CEST) Received: from N95HX1G2.wgnetz.xx (192.168.54.145) by mta.arri.de (192.168.100.104) with Microsoft SMTP Server (TLS) id 14.3.408.0; Fri, 9 Oct 2020 12:32:15 +0200 From: Christian Eggers To: "David S . Miller" , Jakub Kicinski , Deepa Dinamani CC: Willem de Bruijn , Christoph Hellwig , , , Christian Eggers Subject: [PATCH net 2/2] socket: don't clear SOCK_TSTAMP_NEW when SO_TIMESTAMPNS is disabled Date: Fri, 9 Oct 2020 12:31:21 +0200 Message-ID: <20201009103121.1004-2-ceggers@arri.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201009103121.1004-1-ceggers@arri.de> References: <20201009103121.1004-1-ceggers@arri.de> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [192.168.54.145] X-RMX-ID: 20201009-123215-4C74Bl4qT1z2xGF-0@kdin01 X-RMX-SOURCE: 217.111.95.66 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SOCK_TSTAMP_NEW (timespec64 instead of timespec) is also used for hardware time stamps (configured via SO_TIMESTAMPING_NEW). User space (ptp4l) first configures hardware time stamping via SO_TIMESTAMPING_NEW which sets SOCK_TSTAMP_NEW. In the next step, ptp4l disables SO_TIMESTAMPNS(_NEW) (software time stamps), but this must not switch hardware time stamps back to "32 bit mode". This problem happens on 32 bit platforms were the libc has already switched to struct timespec64 (from SO_TIMExxx_OLD to SO_TIMExxx_NEW socket options). ptp4l complains with "missing timestamp on transmitted peer delay request" because the wrong format is received (and discarded). Fixes: 887feae36aee ("socket: Add SO_TIMESTAMP[NS]_NEW") Fixes: 783da70e8396 ("net: add sock_enable_timestamps") Signed-off-by: Christian Eggers --- net/core/sock.c | 1 - 1 file changed, 1 deletion(-) diff --git a/net/core/sock.c b/net/core/sock.c index 3926804702c1..f09053dfb12c 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -757,7 +757,6 @@ static void __sock_set_timestamps(struct sock *sk, bool val, bool new, bool ns) } else { sock_reset_flag(sk, SOCK_RCVTSTAMP); sock_reset_flag(sk, SOCK_RCVTSTAMPNS); - sock_reset_flag(sk, SOCK_TSTAMP_NEW); } } -- Christian Eggers Embedded software developer Arnold & Richter Cine Technik GmbH & Co. Betriebs KG Sitz: Muenchen - Registergericht: Amtsgericht Muenchen - Handelsregisternummer: HRA 57918 Persoenlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH Sitz: Muenchen - Registergericht: Amtsgericht Muenchen - Handelsregisternummer: HRB 54477 Geschaeftsfuehrer: Dr. Michael Neuhaeuser; Stephan Schenk; Walter Trauninger; Markus Zeiler