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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 955D7C2D0BF for ; Tue, 10 Dec 2019 22:09:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5E7142053B for ; Tue, 10 Dec 2019 22:09:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576015771; bh=VJRtcpsfpAwpkoGFFGyFknZWq/Vw+SGLlryQ7+DE7Sc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=cJ96HK8cmFBxX6xUo07+IuZ3+1pia3d/uYN+YYirXjW12UMo+3pM+IL+4P/5m0XWz R8buF+PTOYwEaZtlIOgT8J1cpolqclMQ8juGSBYgar4bs0+4xpzptfY2dO8wSQL9l3 B30RM/SZTW8n3uF+xnjlmE2K+M+MyK7U+BPbd3Gc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730141AbfLJWJa (ORCPT ); Tue, 10 Dec 2019 17:09:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:35354 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728130AbfLJWE3 (ORCPT ); Tue, 10 Dec 2019 17:04:29 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0B18F20838; Tue, 10 Dec 2019 22:04:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576015468; bh=VJRtcpsfpAwpkoGFFGyFknZWq/Vw+SGLlryQ7+DE7Sc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o8ctW28QztQldPAcvIgk5fDFzseZkXwkjn8KJWRAjGVh3nWzccMupCsmr7qhs9M0z Zhpo7Iw2N91yW4F+1CVIy4QeU8BQnuevi25O2W2CvzTKrfHV0At5XEUdxeQFCplmZW 5GrLB4fr8yx0WdktX/pxyY+Mo/cdW7xSGRE4KtIg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Manjunath Patil , Andrew Bowers , Jeff Kirsher , Sasha Levin , intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 074/130] ixgbe: protect TX timestamping from API misuse Date: Tue, 10 Dec 2019 17:02:05 -0500 Message-Id: <20191210220301.13262-74-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191210220301.13262-1-sashal@kernel.org> References: <20191210220301.13262-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Manjunath Patil [ Upstream commit 07066d9dc3d2326fbad8f7b0cb0120cff7b7dedb ] HW timestamping can only be requested for a packet if the NIC is first setup via ioctl(SIOCSHWTSTAMP). If this step was skipped, then the ixgbe driver still allowed TX packets to request HW timestamping. In this situation, we see 'clearing Tx Timestamp hang' noise in the log. Fix this by checking that the NIC is configured for HW TX timestamping before accepting a HW TX timestamping request. Similar-to: commit 26bd4e2db06b ("igb: protect TX timestamping from API misuse") commit 0a6f2f05a2f5 ("igb: Fix a test with HWTSTAMP_TX_ON") Signed-off-by: Manjunath Patil Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 4801d96c4fa91..0edfd199937d5 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -8379,7 +8379,8 @@ netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && adapter->ptp_clock) { - if (!test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS, + if (adapter->tstamp_config.tx_type == HWTSTAMP_TX_ON && + !test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state)) { skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; tx_flags |= IXGBE_TX_FLAGS_TSTAMP; -- 2.20.1