From patchwork Wed Aug 24 21:54:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksander Jan Bajkowski X-Patchwork-Id: 12953990 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 C77E3C48BE4 for ; Wed, 24 Aug 2022 21:54:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240238AbiHXVyE (ORCPT ); Wed, 24 Aug 2022 17:54:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47838 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240155AbiHXVyA (ORCPT ); Wed, 24 Aug 2022 17:54:00 -0400 Received: from mx4.wp.pl (mx4.wp.pl [212.77.101.11]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5535374DDB for ; Wed, 24 Aug 2022 14:53:58 -0700 (PDT) Received: (wp-smtpd smtp.wp.pl 3560 invoked from network); 24 Aug 2022 23:53:54 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wp.pl; s=1024a; t=1661378034; bh=lfTXwFyLFSRTSlBjg/arlkDnreNsAUZ2EdrFYagf3Sc=; h=From:To:Subject; b=lvAG5t2YmASvpiuZDFn2cSiBTcuJXZ0X3O4kgGtSWBN7GH1b+MMUDqUqnrwKyBGtW FzuZFZyxKrMwp8enSpvPLLd/hghog3dv5OxqaiR/4MgWMyO6K/TyhTpKnQsRyXXinA /gFZDxZRmeG6vunkHGmm0q88t3tteQhPxYEUSw/0= Received: from ip-137-21.ds.pw.edu.pl (HELO LAPTOP-OLEK.lan) (olek2@wp.pl@[194.29.137.21]) (envelope-sender ) by smtp.wp.pl (WP-SMTPD) with ECDHE-RSA-AES256-GCM-SHA384 encrypted SMTP for ; 24 Aug 2022 23:53:54 +0200 From: Aleksander Jan Bajkowski To: hauke@hauke-m.de, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, olek2@wp.pl, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net v3 0/3] net: lantiq_xrx200: fix errors under memory pressure Date: Wed, 24 Aug 2022 23:54:05 +0200 Message-Id: <20220824215408.4695-1-olek2@wp.pl> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-WP-MailID: dd75648a94c29d326a4f0bd6e6c9ab91 X-WP-AV: skaner antywirusowy Poczty Wirtualnej Polski X-WP-SPAM: NO 0000000 [IZPU] Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This series fixes issues that can occur in the driver under memory pressure. Situations when the system cannot allocate memory are rare, so the mentioned bugs have been fixed recently. The patches have been tested on a BT Home router with the Lantiq xRX200 chipset. Changelog: v3: - removed netdev_err() log from the first patch v2: - the second patch has been changed, so that under memory pressure situation the driver will not receive packets indefinitely regardless of the NAPI budget, - the third patch has been added. Aleksander Jan Bajkowski (3): net: lantiq_xrx200: confirm skb is allocated before using net: lantiq_xrx200: fix lock under memory pressure net: lantiq_xrx200: restore buffer if memory allocation failed drivers/net/ethernet/lantiq_xrx200.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)