be2net: add speed reporting for 20G-KR interface

This patch adds speed reporting via ethtool for 20G KR2 interface on the
Skyhawk-R chip.

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -1374,6 +1374,7 @@ enum {
 #define BE_SUPPORTED_SPEED_100MBPS	2
 #define BE_SUPPORTED_SPEED_1GBPS	4
 #define BE_SUPPORTED_SPEED_10GBPS	8
+#define BE_SUPPORTED_SPEED_20GBPS	0x10
 #define BE_SUPPORTED_SPEED_40GBPS	0x20
 
 #define BE_AN_EN			0x2

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

@@ -534,6 +534,13 @@ static u32 convert_to_et_setting(struct be_adapter *adapter, u32 if_speeds)
 		if (if_speeds & BE_SUPPORTED_SPEED_10GBPS)
 			val |= SUPPORTED_10000baseKX4_Full;
 		break;
+	case PHY_TYPE_KR2_20GB:
+		val |= SUPPORTED_Backplane;
+		if (if_speeds & BE_SUPPORTED_SPEED_10GBPS)
+			val |= SUPPORTED_10000baseKR_Full;
+		if (if_speeds & BE_SUPPORTED_SPEED_20GBPS)
+			val |= SUPPORTED_20000baseKR2_Full;
+		break;
 	case PHY_TYPE_KR_10GB:
 		val |= SUPPORTED_Backplane |
 				SUPPORTED_10000baseKR_Full;