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Message-Id: <1356777522-19652-12-git-send-email-jiri@resnulli.us> Date: Sat, 29 Dec 2012 11:38:38 +0100 From: Jiri Pirko <jiri@...nulli.us> To: netdev@...r.kernel.org Cc: davem@...emloft.net, edumazet@...gle.com, bhutchings@...arflare.com, faisal.latif@...el.com, shemminger@...tta.com, fbl@...hat.com, roland@...nel.org, sean.hefty@...el.com, hal.rosenstock@...il.com, fubar@...ibm.com, andy@...yhouse.net, divy@...lsio.com, jitendra.kalsaria@...gic.com, sony.chacko@...gic.com, linux-driver@...gic.com, kaber@...sh.net, ursula.braun@...ibm.com, blaschka@...ux.vnet.ibm.com, schwidefsky@...ibm.com, heiko.carstens@...ibm.com, ebiederm@...ssion.com, joe@...ches.com, amwang@...hat.com, nhorman@...driver.com, john.r.fastabend@...el.com, pablo@...filter.org Subject: [patch net-next 11/15] vlan: remove usage of dev->master in __vlan_find_dev_deep() 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@...nulli.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 65e06ab..380440b 100644 --- a/net/8021q/vlan_core.c +++ b/net/8021q/vlan_core.c @@ -60,21 +60,25 @@ bool vlan_do_receive(struct sk_buff **skbp) 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 master 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_master_upper_dev_get_rcu(dev); + if (upper_dev) + return __vlan_find_dev_deep(upper_dev, vlan_id); } return NULL; -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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