net: ethtool: Add destination MAC address to flow steering API

Add ability to specify destination MAC address for L3/L4 flow spec
in order to be able to specify action for different VM's under vSwitch
configuration. This change is transparent to older userspace.

Signed-off-by: Yan Burman <yanb@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 4 deletions

diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index d3eaaaf1009e..be8c41e2dc15 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -500,13 +500,15 @@ union ethtool_flow_union {
         struct ethtool_ah_espip4_spec           esp_ip4_spec;
         struct ethtool_usrip4_spec              usr_ip4_spec;
         struct ethhdr                           ether_spec;
-        __u8                                    hdata[60];
+        __u8                                    hdata[52];
 };
 
 struct ethtool_flow_ext {
-        __be16  vlan_etype;
-        __be16  vlan_tci;
-        __be32  data[2];
+        __u8            padding[2];
+        unsigned char   h_dest[ETH_ALEN];       /* destination eth addr */
+        __be16          vlan_etype;
+        __be16          vlan_tci;
+        __be32          data[2];
 };
 
 /**
@@ -1027,6 +1029,7 @@ enum ethtool_sfeatures_retval_bits {
 #define ETHER_FLOW      0x12    /* spec only (ether_spec) */
 /* Flag to enable additional fields in struct ethtool_rx_flow_spec */
 #define FLOW_EXT        0x80000000
+#define FLOW_MAC_EXT    0x40000000
 
 /* L3-L4 network traffic flow hash options */
 #define RXH_L2DA        (1 << 1)