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authorJiri Benc <jbenc@redhat.com>2015-03-28 19:13:23 +0100
committerDavid S. Miller <davem@davemloft.net>2015-03-31 13:28:33 -0400
commit2afa650ce297bc2048bc3d059774be9c39734565 (patch)
tree0447b56128f826e76df43fee1d690ab359e93c27 /drivers
parent27705f7085ce2e124fac4c280ce824962cc90bb6 (diff)
downloadlinux-2afa650ce297bc2048bc3d059774be9c39734565.tar.bz2
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 <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ipvlan/ipvlan_core.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
index 8a542b9340c4..568628f95aa2 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