From: Jiri Pirko <jiri@resnulli.us>
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 [thread overview]
Message-ID: <1344871635-1052-12-git-send-email-jiri@resnulli.us> (raw)
In-Reply-To: <1344871635-1052-1-git-send-email-jiri@resnulli.us>
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 <jiri@resnulli.us>
---
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
next prev parent reply other threads:[~2012-08-13 15:29 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-13 15:26 [patch net-next 00/16] net: introduce upper device lists and remove dev->master Jiri Pirko
2012-08-13 15:27 ` [patch net-next 01/16] net: introduce upper device lists Jiri Pirko
2012-08-13 17:04 ` Ben Hutchings
2012-08-13 17:31 ` Jiri Pirko
2012-08-15 20:33 ` Nicolas de Pesloüan
2012-08-13 17:52 ` Flavio Leitner
2012-08-14 12:24 ` Jiri Pirko
2012-08-14 13:14 ` Flavio Leitner
2012-08-14 13:35 ` Jiri Pirko
2012-08-14 9:02 ` Cong Wang
2012-08-14 10:18 ` Jiri Pirko
2012-08-13 15:27 ` [patch net-next 02/16] macvlan: add link to upper device Jiri Pirko
2012-08-13 15:27 ` [patch net-next 03/16] vlan: " Jiri Pirko
2012-08-13 19:04 ` Flavio Leitner
2012-08-14 7:24 ` Jiri Pirko
2012-08-13 15:27 ` [patch net-next 04/16] rtnetlink: remove usage of dev->master Jiri Pirko
2012-08-13 15:27 ` [patch net-next 05/16] team: remove usage of netdev_set_master() Jiri Pirko
2012-08-13 15:27 ` [patch net-next 06/16] bridge: " Jiri Pirko
2012-08-13 15:27 ` [patch net-next 07/16] netpoll: remove usage of dev->master Jiri Pirko
2012-08-13 15:27 ` [patch net-next 08/16] cxgb3: " Jiri Pirko
2012-08-13 15:27 ` [patch net-next 09/16] qlcnic: guard __vlan_find_dev_deep() by rcu_read_lock Jiri Pirko
2012-08-13 15:27 ` [patch net-next 10/16] qeth: ensure that __vlan_find_dev_deep() is called with rcu_read_lock Jiri Pirko
2012-08-13 15:27 ` Jiri Pirko [this message]
2012-08-13 15:27 ` [patch net-next 12/16] nes: remove usage of dev->master Jiri Pirko
2012-08-13 15:27 ` [patch net-next 13/16] bonding: " Jiri Pirko
2012-08-13 15:27 ` [patch net-next 14/16] net: remove no longer used netdev_set_bond_master() and netdev_set_master() Jiri Pirko
2012-08-13 15:27 ` [patch net-next 15/16] net: remove usage of dev->master Jiri Pirko
2012-08-13 17:15 ` Ben Hutchings
2012-08-13 17:31 ` Jiri Pirko
2012-08-13 15:27 ` [patch net-next 16/16] net: kill dev->master Jiri Pirko
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