From patchwork Sun Mar 8 13:47:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Taehee Yoo X-Patchwork-Id: 222861 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, 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 47623C10DCE for ; Sun, 8 Mar 2020 13:47:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 10B0420848 for ; Sun, 8 Mar 2020 13:47:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="MV8bCU+0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726318AbgCHNrd (ORCPT ); Sun, 8 Mar 2020 09:47:33 -0400 Received: from mail-pj1-f66.google.com ([209.85.216.66]:36880 "EHLO mail-pj1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726270AbgCHNrd (ORCPT ); Sun, 8 Mar 2020 09:47:33 -0400 Received: by mail-pj1-f66.google.com with SMTP id ca13so1019276pjb.2 for ; Sun, 08 Mar 2020 06:47:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=cNVD2N0obEwSlOAC8sFMMehN28ZU8w7EF74gN92j0Ig=; b=MV8bCU+0782yvkstkKB2NdP0T6w2laiK85Jzy9ZudSAdFcCx4NCVA7RO1sCVnRg7v+ COHhyf0UGP0MsmzYzqDj9HKilcZCbw/6RVr1f1jCNE4Yn1iJSc3GNQx30Vni9DRySn6s 6Bj4YjgFHRc5Z6iGRLwdU3s/+TW7lr3SM9Mxn5DzzL3byPvrPxZUX0GHbs5KobrDjy7J pwzVIQRyLVNRMKD1H/DggX0xpivKbZe28ZJMQT9d60lAQWlgYz8eG/CjpglZdsIA9w1C mbOxDae14RiVZxaeob/Fs8mKvA8HS/6dSRElDsd/F1AIvOqiK9GRKvHmmz6o99f5e9ss 0AzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=cNVD2N0obEwSlOAC8sFMMehN28ZU8w7EF74gN92j0Ig=; b=gIKOSYRRMJ6I8JtY35CSU9uzNCCCG0bpDjhQBlmAToRsyoiAiQXIgCnvmI0z8N5bti GladDUfeKx67+deSp92mI6oUM0gALd3j+jGWfQGZ2bvm829y+8wfRIr6UwE6ZUdo34gk 4ZhHuiiOcmm3t2/KFpKjOWFswoMxkVYFga+BoJYkTWSUCfxAS/H+hvxNVTUg0044Z4cX OnJokMBMrY39C4zhe7gDhf36Dc7eQFVU0VYNc0TESegoN0WqHUGP/8RjN3p23qis4A2K goZJhiZwKXKMEzG4Fw3eIc63SsPL4vvpmDPkguSi2ab64n4gTfjWnvHugEhJj4Xpb5RR t7Uw== X-Gm-Message-State: ANhLgQ02ouTEXDgYzz8Y1SDI9o8B0oAqFtUK0zHW4dJDvfdlNy4vPks4 jjN+WBjSk5g+nWzIjygy85g= X-Google-Smtp-Source: ADFU+vtWe70P/1VGzrN1LHkMGtd4Vj2g+kmYREjAWdXFcVOPPWLpHGSpE63fKI6Uv3GbgOHpJ9GVMg== X-Received: by 2002:a17:90a:ac05:: with SMTP id o5mr14341354pjq.143.1583675251316; Sun, 08 Mar 2020 06:47:31 -0700 (PDT) Received: from localhost.localdomain ([180.70.143.152]) by smtp.gmail.com with ESMTPSA id md20sm1661910pjb.15.2020.03.08.06.47.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 08 Mar 2020 06:47:30 -0700 (PDT) From: Taehee Yoo To: davem@davemloft.net, kuba@kernel.org, subashab@codeaurora.org, stranche@codeaurora.org, netdev@vger.kernel.org Cc: ap420073@gmail.com Subject: [PATCH net-next] net: rmnet: set NETIF_F_LLTX flag Date: Sun, 8 Mar 2020 13:47:06 +0000 Message-Id: <20200308134706.18727-1-ap420073@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The rmnet_vnd_setup(), which is the callback of ->ndo_start_xmit() is allowed to call concurrently because it uses RCU protected data. So, it doesn't need tx lock. Signed-off-by: Taehee Yoo --- drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c index d7c52e398e4a..d58b51d277f1 100644 --- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c +++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c @@ -212,6 +212,8 @@ void rmnet_vnd_setup(struct net_device *rmnet_dev) rmnet_dev->needs_free_netdev = true; rmnet_dev->ethtool_ops = &rmnet_ethtool_ops; + rmnet_dev->features |= NETIF_F_LLTX; + /* This perm addr will be used as interface identifier by IPv6 */ rmnet_dev->addr_assign_type = NET_ADDR_RANDOM; eth_random_addr(rmnet_dev->perm_addr);