openvswitch: Reset key metadata for packet execution.

Userspace packet execute command pass down flow key for given
packet. But userspace can skip some parameter with zero value.
Therefore kernel needs to initialize key metadata to zero.

Fixes: 0714812134 ("openvswitch: Eliminate memset() from flow_extract.")
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index e2c348b8bacafac9c646f4861b55b76d4e1a51e9..50ec42f170a06713e086d66abb2ea0d1aa998d74 100644 (file)
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -717,6 +717,8 @@ int ovs_flow_key_extract_userspace(const struct nlattr *attr,
 {
        int err;
 
+       memset(key, 0, OVS_SW_FLOW_KEY_METADATA_SIZE);
+
        /* Extract metadata from netlink attributes. */
        err = ovs_nla_get_flow_metadata(attr, key, log);
        if (err)