From patchwork Wed Mar 11 21:41:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michal Kubecek X-Patchwork-Id: 1253217 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.cz Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48d54k3WG1z9sSJ for ; Thu, 12 Mar 2020 08:41:26 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729976AbgCKVlW (ORCPT ); Wed, 11 Mar 2020 17:41:22 -0400 Received: from mx2.suse.de ([195.135.220.15]:47116 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729842AbgCKVlV (ORCPT ); Wed, 11 Mar 2020 17:41:21 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id DF4EBAFAA; Wed, 11 Mar 2020 21:41:18 +0000 (UTC) Received: by unicorn.suse.cz (Postfix, from userid 1000) id 91248E0C0A; Wed, 11 Mar 2020 22:41:18 +0100 (CET) Message-Id: <62ce4aad74028e861c4c8d28b663ee16549226e0.1583962006.git.mkubecek@suse.cz> In-Reply-To: References: From: Michal Kubecek Subject: [PATCH net-next 15/15] ethtool: add CHANNELS_NTF notification To: David Miller , netdev@vger.kernel.org Cc: Jakub Kicinski , Jiri Pirko , Andrew Lunn , Florian Fainelli , John Linville , Johannes Berg , linux-kernel@vger.kernel.org Date: Wed, 11 Mar 2020 22:41:18 +0100 (CET) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Send ETHTOOL_MSG_CHANNELS_NTF notification whenever channel counts of a network device are modified using ETHTOOL_MSG_CHANNELS_SET netlink message or ETHTOOL_SCHANNELS ioctl request. Signed-off-by: Michal Kubecek --- Documentation/networking/ethtool-netlink.rst | 1 + include/uapi/linux/ethtool_netlink.h | 1 + net/ethtool/channels.c | 3 +++ net/ethtool/ioctl.c | 6 +++++- net/ethtool/netlink.c | 2 ++ 5 files changed, 12 insertions(+), 1 deletion(-) diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst index 7df7476cf310..31a601cafa3f 100644 --- a/Documentation/networking/ethtool-netlink.rst +++ b/Documentation/networking/ethtool-netlink.rst @@ -220,6 +220,7 @@ Kernel to userspace: ``ETHTOOL_MSG_RINGS_GET_REPLY`` ring sizes ``ETHTOOL_MSG_RINGS_NTF`` ring sizes ``ETHTOOL_MSG_CHANNELS_GET_REPLY`` channel counts + ``ETHTOOL_MSG_CHANNELS_NTF`` channel counts ===================================== ================================= ``GET`` requests are sent by userspace applications to retrieve device diff --git a/include/uapi/linux/ethtool_netlink.h b/include/uapi/linux/ethtool_netlink.h index f1384a8f3534..c7c7a1a550af 100644 --- a/include/uapi/linux/ethtool_netlink.h +++ b/include/uapi/linux/ethtool_netlink.h @@ -59,6 +59,7 @@ enum { ETHTOOL_MSG_RINGS_GET_REPLY, ETHTOOL_MSG_RINGS_NTF, ETHTOOL_MSG_CHANNELS_GET_REPLY, + ETHTOOL_MSG_CHANNELS_NTF, /* add new constants above here */ __ETHTOOL_MSG_KERNEL_CNT, diff --git a/net/ethtool/channels.c b/net/ethtool/channels.c index 412b6380766d..04d1a75a55c7 100644 --- a/net/ethtool/channels.c +++ b/net/ethtool/channels.c @@ -203,6 +203,9 @@ int ethnl_set_channels(struct sk_buff *skb, struct genl_info *info) } ret = dev->ethtool_ops->set_channels(dev, &channels); + if (ret < 0) + goto out_ops; + ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); out_ops: ethnl_ops_complete(dev); diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c index 06224a03139e..258840b19fb5 100644 --- a/net/ethtool/ioctl.c +++ b/net/ethtool/ioctl.c @@ -1649,6 +1649,7 @@ static noinline_for_stack int ethtool_set_channels(struct net_device *dev, u16 from_channel, to_channel; u32 max_rx_in_use = 0; unsigned int i; + int ret; if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) return -EOPNOTSUPP; @@ -1680,7 +1681,10 @@ static noinline_for_stack int ethtool_set_channels(struct net_device *dev, if (xdp_get_umem_from_qid(dev, i)) return -EINVAL; - return dev->ethtool_ops->set_channels(dev, &channels); + ret = dev->ethtool_ops->set_channels(dev, &channels); + if (!ret) + ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); + return ret; } static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c index f61654b8f210..55c8ce4019d9 100644 --- a/net/ethtool/netlink.c +++ b/net/ethtool/netlink.c @@ -534,6 +534,7 @@ ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, + [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, }; /* default notification handler */ @@ -622,6 +623,7 @@ static const ethnl_notify_handler_t ethnl_notify_handlers[] = { [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, }; void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data)