From: Jiri Benc Date: Sat, 28 Mar 2015 18:13:23 +0000 (+0100) Subject: ipvlan: protect against concurrent link removal X-Git-Tag: v4.0-rc7~18^2~11^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2afa650ce297bc2048bc3d059774be9c39734565;p=platform%2Fkernel%2Flinux-exynos.git ipvlan: protect against concurrent link removal Adding and removing to the 'ipvlans' list is already done using _rcu list operations. Signed-off-by: Jiri Benc Signed-off-by: David S. Miller --- diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c index 8a542b9..568628f 100644 --- a/drivers/net/ipvlan/ipvlan_core.c +++ b/drivers/net/ipvlan/ipvlan_core.c @@ -193,7 +193,8 @@ static void ipvlan_multicast_frame(struct ipvl_port *port, struct sk_buff *skb, if (skb->protocol == htons(ETH_P_PAUSE)) return; - list_for_each_entry(ipvlan, &port->ipvlans, pnode) { + rcu_read_lock(); + list_for_each_entry_rcu(ipvlan, &port->ipvlans, pnode) { if (local && (ipvlan == in_dev)) continue; @@ -220,6 +221,7 @@ static void ipvlan_multicast_frame(struct ipvl_port *port, struct sk_buff *skb, mcast_acct: ipvlan_count_rx(ipvlan, len, ret == NET_RX_SUCCESS, true); } + rcu_read_unlock(); /* Locally generated? ...Forward a copy to the main-device as * well. On the RX side we'll ignore it (wont give it to any