From nobody Fri Dec 19 04:20:03 2025 Received: from forward101b.mail.yandex.net (forward101b.mail.yandex.net [178.154.239.148]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2478A22D781; Sat, 22 Mar 2025 14:39:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.154.239.148 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742654349; cv=none; b=giYOH/9j+hwtysiTn6IKSK6tIl8Eqsclw0LL/xFn5ey7fW921T6XOeitZOyvpygXKWhEaz6+tDJF/CgTA9xtyIkEeojDgrhHsGHvWCTXExSyE4f01jmylENVe44rfX5G2dl/1KlenfztEvMdUB6Fh3q/iSy07Pf9obdWXvv/+zc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742654349; c=relaxed/simple; bh=0kZG/Wd1sWxDChI9+bRz0jhQKxDjuqEhYZM4V5cSw6c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nIhMJi8botQgPxPFaMOv20k9R5lClLXshDJTxDVE1bc6ayszbjX/qjbsOPLVxZ3etN/NMrcN2Tn8QeA0CaCZUt8T0UEPjcq/88LA/OSKwl35do8K8obSChl5JKNKnrdpnsKbqABLD6pAHnOWuWGgaOSWNDJT+xMo2CjHvEvmWVQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ya.ru; spf=pass smtp.mailfrom=ya.ru; dkim=pass (1024-bit key) header.d=ya.ru header.i=@ya.ru header.b=XyQqVEma; arc=none smtp.client-ip=178.154.239.148 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ya.ru Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ya.ru Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ya.ru header.i=@ya.ru header.b="XyQqVEma" Received: from mail-nwsmtp-smtp-production-main-67.sas.yp-c.yandex.net (mail-nwsmtp-smtp-production-main-67.sas.yp-c.yandex.net [IPv6:2a02:6b8:c37:6e4b:0:640:32c7:0]) by forward101b.mail.yandex.net (Yandex) with ESMTPS id 62B2B60AA7; Sat, 22 Mar 2025 17:39:05 +0300 (MSK) Received: by mail-nwsmtp-smtp-production-main-67.sas.yp-c.yandex.net (smtp/Yandex) with ESMTPSA id 3dNvGxWLd0U0-Zu4kVMu7; Sat, 22 Mar 2025 17:39:05 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ya.ru; s=mail; t=1742654345; bh=w4WofyfWfVkrkiMBgU50VTNHeyWA5FJWhVH3j/Tl91M=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=XyQqVEma6yf9Koc7aECvJnLbK6z3AY5fw74o7pVFriEvg/Jqf57VLzzneuf7axJf2 aqTK7nihxsGTlh2CVG5Azl9raH6/jbvAVkEefsb3X03yKTxQgKd57sU5l79c/xl/Ml uLFNpeznbl2kfCcZGf2dfmWiRXtbOBpc2kX/B9Z0= Authentication-Results: mail-nwsmtp-smtp-production-main-67.sas.yp-c.yandex.net; dkim=pass header.i=@ya.ru From: Kirill Tkhai To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: tkhai@ya.ru Subject: [PATCH NET-PREV 09/51] net: Use register_netdevice() in loopback() Date: Sat, 22 Mar 2025 17:39:02 +0300 Message-ID: <174265434292.356712.4877195753873111223.stgit@pro.pro> X-Mailer: git-send-email 2.47.2 In-Reply-To: <174265415457.356712.10472727127735290090.stgit@pro.pro> References: <174265415457.356712.10472727127735290090.stgit@pro.pro> User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable loopback is simple interface without logical links to other devices. Make it using register_netdevice() to allocate unique nd_lock for it. loopback is converted, so 50% work of removing rtnl_lock in kernel is done. Signed-off-by: Kirill Tkhai --- drivers/net/loopback.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c index 2b486e7c749c..c911ee7e6c68 100644 --- a/drivers/net/loopback.c +++ b/drivers/net/loopback.c @@ -214,7 +214,11 @@ static __net_init int loopback_net_init(struct net *ne= t) goto out; =20 dev_net_set(dev, net); - err =3D register_netdev(dev); + err =3D -EINTR; + if (rtnl_lock_killable()) + goto out_free_netdev; + err =3D register_netdevice(dev); + rtnl_unlock(); if (err) goto out_free_netdev;