Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753223Ab2HMP3s (ORCPT ); Mon, 13 Aug 2012 11:29:48 -0400 Received: from mail-ee0-f46.google.com ([74.125.83.46]:60996 "EHLO mail-ee0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752969Ab2HMP1u (ORCPT ); Mon, 13 Aug 2012 11:27:50 -0400 From: Jiri Pirko To: netdev@vger.kernel.org Cc: davem@davemloft.net, edumazet@google.com, faisal.latif@intel.com, roland@kernel.org, sean.hefty@intel.com, hal.rosenstock@gmail.com, fubar@us.ibm.com, andy@greyhouse.net, divy@chelsio.com, jitendra.kalsaria@qlogic.com, sony.chacko@qlogic.com, linux-driver@qlogic.com, kaber@trash.net, ursula.braun@de.ibm.com, blaschka@linux.vnet.ibm.com, linux390@de.ibm.com, shemminger@vyatta.com, bhutchings@solarflare.com, therbert@google.com, xiyou.wangcong@gmail.com, joe@perches.com, gregory.v.rose@intel.com, john.r.fastabend@intel.com, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, bridge@lists.linux-foundation.org, fbl@redhat.com Subject: [patch net-next 11/16] vlan: remove usage of dev->master in __vlan_find_dev_deep() Date: Mon, 13 Aug 2012 17:27:10 +0200 Message-Id: <1344871635-1052-12-git-send-email-jiri@resnulli.us> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1344871635-1052-1-git-send-email-jiri@resnulli.us> References: <1344871635-1052-1-git-send-email-jiri@resnulli.us> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1821 Lines: 53 Also, since all users call __vlan_find_dev_deep() with rcu_read_lock, make no possibility to call this with rtnl mutex held only. Signed-off-by: Jiri Pirko --- net/8021q/vlan_core.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c index 8ca533c..f9518ad 100644 --- a/net/8021q/vlan_core.c +++ b/net/8021q/vlan_core.c @@ -66,21 +66,25 @@ bool vlan_do_receive(struct sk_buff **skbp, bool last_handler) return true; } -/* Must be invoked with rcu_read_lock or with RTNL. */ -struct net_device *__vlan_find_dev_deep(struct net_device *real_dev, +/* Must be invoked with rcu_read_lock. */ +struct net_device *__vlan_find_dev_deep(struct net_device *dev, u16 vlan_id) { - struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info); + struct vlan_info *vlan_info = rcu_dereference(dev->vlan_info); if (vlan_info) { return vlan_group_get_device(&vlan_info->grp, vlan_id); } else { /* - * Bonding slaves do not have grp assigned to themselves. - * Grp is assigned to bonding master instead. + * Lower devices of unique uppers (bonding, team) do not have + * grp assigned to themselves. Grp is assigned to upper device + * instead. */ - if (netif_is_bond_slave(real_dev)) - return __vlan_find_dev_deep(real_dev->master, vlan_id); + struct net_device *upper_dev; + + upper_dev = netdev_unique_upper_dev_get_rcu(dev); + if (upper_dev) + return __vlan_find_dev_deep(upper_dev, vlan_id); } return NULL; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/