be2net: query FW to check if EVB is enabled

The current code assumes that bridge functionality (EVB) in the adapter
is enabled only when SR-IOV is enabled. This is not always true.
This patch uses the GET_HSW_CONFIG FW cmd to query this from the FW.

Signed-off-by: Kalesh AP <kalesh.purayil@avagotech.com>
Signed-off-by: Sathya Perla <sathya.perla@avagotech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be_cmds.h

@@ -1758,6 +1758,7 @@ struct be_cmd_req_set_mac_list {
 /*********************** HSW Config ***********************/
 #define PORT_FWD_TYPE_VEPA		0x3
 #define PORT_FWD_TYPE_VEB		0x2
+#define PORT_FWD_TYPE_PASSTHRU		0x1
 
 #define ENABLE_MAC_SPOOFCHK		0x2
 #define DISABLE_MAC_SPOOFCHK		0x3

drivers/net/ethernet/emulex/benet/be_main.c

@@ -5073,9 +5073,6 @@ static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 	int status = 0;
 	u8 hsw_mode;
 
-	if (!sriov_enabled(adapter))
-		return 0;
-
 	/* BE and Lancer chips support VEB mode only */
 	if (BEx_chip(adapter) || lancer_chip(adapter)) {
 		hsw_mode = PORT_FWD_TYPE_VEB;
@@ -5085,6 +5082,9 @@ static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 					       NULL);
 		if (status)
 			return 0;
+
+		if (hsw_mode == PORT_FWD_TYPE_PASSTHRU)
+			return 0;
 	}
 
 	return ndo_dflt_bridge_getlink(skb, pid, seq, dev,