DCB: Add support for DCB BCN

Adds an interface to configure the Backward Congestion Notification
(BCN) feature.  In a BCN capabale network, congestion notifications
from congested points out in the network can cause the end station
limit the rate of a given traffic flow.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h
index c7d87caf3f99..91e0a3d7faf2 100644
--- a/include/net/dcbnl.h
+++ b/include/net/dcbnl.h
@@ -44,6 +44,10 @@ struct dcbnl_rtnl_ops {
         u8   (*setnumtcs)(struct net_device *, int, u8);
         u8   (*getpfcstate)(struct net_device *);
         void (*setpfcstate)(struct net_device *, u8);
+        void (*getbcncfg)(struct net_device *, int, u32 *);
+        void (*setbcncfg)(struct net_device *, int, u32);
+        void (*getbcnrp)(struct net_device *, int, u8 *);
+        void (*setbcnrp)(struct net_device *, int, u8);
 };
 
 #endif /* __NET_DCBNL_H__ */