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=-7.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=no 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 C16A9C43461 for ; Wed, 9 Sep 2020 17:38:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6E48620757 for ; Wed, 9 Sep 2020 17:38:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599673085; bh=YMNxy+6Xq5/52E7pSnhnUK7ftxkD7XuYzodi7vHazOk=; h=From:To:Cc:Subject:Date:List-ID:From; b=B27V77U5vrXlsItsXE4wtZn3Kwah3rfZ7nXihkiOFieXF1O2Qv2t9iRNy2wfs/YRU G+aMzLs4Co3J0w7KuNdlPXwZ2fYwcPVWARpZe3SEGltstLPuhRL9oX0fjWEQUBsVZG S3FnOE4R5a1mOXmnIi5kqIssjdIs4SgwMI2iWfJ4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729913AbgIIRiE (ORCPT ); Wed, 9 Sep 2020 13:38:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:43656 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729135AbgIIRh6 (ORCPT ); Wed, 9 Sep 2020 13:37:58 -0400 Received: from kicinski-fedora-PC1C0HJN.thefacebook.com (unknown [163.114.132.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1A55D20757; Wed, 9 Sep 2020 17:37:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599673077; bh=YMNxy+6Xq5/52E7pSnhnUK7ftxkD7XuYzodi7vHazOk=; h=From:To:Cc:Subject:Date:From; b=1T2yLvnfrnRYiITcddx3sVWh7z30tXYhruQagHoNCILtQw79whWDbFzvcwQj77IHo ojw34dVZ/WjRL75GDoOPNMU3BCieIodMq0byUYRt58BOKuaJH14Gh6CQpTfYevX39L NcdQJr7SWVitq+5e0h6fsmqKeqDiVJ2yD6evnVxA= From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, eric.dumazet@gmail.com, kernel-team@fb.com, Jakub Kicinski Subject: [PATCH net-next 0/3] netpoll: make sure napi_list is safe for RCU traversal Date: Wed, 9 Sep 2020 10:37:50 -0700 Message-Id: <20200909173753.229124-1-kuba@kernel.org> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi! This series is a follow-up to the fix in commit 96e97bc07e90 ("net: disable netpoll on fresh napis"). To avoid any latent race conditions convert dev->napi_list to a proper RCU list. We need minor restructuring because it looks like netif_napi_del() used to be idempotent, and it may be quite hard to track down everyone who depends on that. Jakub Kicinski (3): net: remove napi_hash_del() from driver-facing API net: manage napi add/del idempotence explicitly net: make sure napi_list is safe for RCU traversal .../net/ethernet/broadcom/bnx2x/bnx2x_cmn.h | 8 ++--- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 5 ++- drivers/net/ethernet/cisco/enic/enic_main.c | 12 ++++--- drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c | 4 +-- .../net/ethernet/myricom/myri10ge/myri10ge.c | 5 ++- drivers/net/veth.c | 3 +- drivers/net/virtio_net.c | 7 ++-- include/linux/netdevice.h | 36 +++++++++---------- net/core/dev.c | 32 ++++++++--------- net/core/netpoll.c | 2 +- 10 files changed, 55 insertions(+), 59 deletions(-) -- 2.26.2