i40e: priv flag for controlling VEB stats

Add an ethtool priv flag to enable and disable printing
the VEB statistics.

Change-ID: I7654054a3a73b08aa8310d94ee8fce6219107dd8
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40e/i40e.h

@@ -103,6 +103,7 @@
 #define I40E_PRIV_FLAGS_NPAR_FLAG	BIT(0)
 #define I40E_PRIV_FLAGS_LINKPOLL_FLAG	BIT(1)
 #define I40E_PRIV_FLAGS_FD_ATR		BIT(2)
+#define I40E_PRIV_FLAGS_VEB_STATS	BIT(3)
 
 #define I40E_NVM_VERSION_LO_SHIFT  0
 #define I40E_NVM_VERSION_LO_MASK   (0xff << I40E_NVM_VERSION_LO_SHIFT)

drivers/net/ethernet/intel/i40e/i40e_ethtool.c

@@ -229,6 +229,7 @@ static const char i40e_priv_flags_strings[][ETH_GSTRING_LEN] = {
 	"NPAR",
 	"LinkPolling",
 	"flow-director-atr",
+	"veb-stats",
 };
 
 #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_priv_flags_strings)
@@ -2670,6 +2671,8 @@ static u32 i40e_get_priv_flags(struct net_device *dev)
 		I40E_PRIV_FLAGS_LINKPOLL_FLAG : 0;
 	ret_flags |= pf->flags & I40E_FLAG_FD_ATR_ENABLED ?
 		I40E_PRIV_FLAGS_FD_ATR : 0;
+	ret_flags |= pf->flags & I40E_FLAG_VEB_STATS_ENABLED ?
+		I40E_PRIV_FLAGS_VEB_STATS : 0;
 
 	return ret_flags;
 }
@@ -2701,6 +2704,11 @@ static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
 		pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
 	}
 
+	if (flags & I40E_PRIV_FLAGS_VEB_STATS)
+		pf->flags |= I40E_FLAG_VEB_STATS_ENABLED;
+	else
+		pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
+
 	return 0;
 }