openvswitch: Add support for OVS_FLOW_ATTR_PROBE.

This new flag is useful for suppressing error logging while probing
for datapath features using flow commands.  For backwards
compatibility reasons the commands are executed normally, but error
logging is suppressed.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h
index cf8185661e52..3a6dcaa359b7 100644
--- a/include/uapi/linux/openvswitch.h
+++ b/include/uapi/linux/openvswitch.h
@@ -457,6 +457,8 @@ enum ovs_flow_attr {
         OVS_FLOW_ATTR_USED,      /* u64 msecs last used in monotonic time. */
         OVS_FLOW_ATTR_CLEAR,     /* Flag to clear stats, tcp_flags, used. */
         OVS_FLOW_ATTR_MASK,      /* Sequence of OVS_KEY_ATTR_* attributes. */
+        OVS_FLOW_ATTR_PROBE,     /* Flow operation is a feature probe, error
+                                  * logging should be suppressed. */
         __OVS_FLOW_ATTR_MAX
 };