bnx2x: Correct VF driver info

When running ethtool on VF interfaces, returning values should indicate
that the interface does not support self-test or register dump.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnx2x/bnx2x.h

@@ -2231,7 +2231,7 @@ void bnx2x_igu_clear_sb_gen(struct bnx2x *bp, u8 func, u8 idu_sb_id,
 #define BNX2X_NUM_TESTS_SF		7
 #define BNX2X_NUM_TESTS_MF		3
 #define BNX2X_NUM_TESTS(bp)		(IS_MF(bp) ? BNX2X_NUM_TESTS_MF : \
-						     BNX2X_NUM_TESTS_SF)
+					     IS_VF(bp) ? 0 : BNX2X_NUM_TESTS_SF)
 
 #define BNX2X_PHY_LOOPBACK		0
 #define BNX2X_MAC_LOOPBACK		1

drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c

@@ -639,6 +639,9 @@ static int bnx2x_get_regs_len(struct net_device *dev)
 	struct bnx2x *bp = netdev_priv(dev);
 	int regdump_len = 0;
 
+	if (IS_VF(bp))
+		return 0;
+
 	regdump_len = __bnx2x_get_regs_len(bp);
 	regdump_len *= 4;
 	regdump_len += sizeof(struct dump_header);