netdev - [PATCH net-next 1/2] ice: Add support for 100G KR2/CR2/SR2 link reporting

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Message-Id: <20221123155544.1660952-1-przemyslaw.kitszel@intel.com>
Date:   Wed, 23 Nov 2022 16:55:43 +0100
From:   Przemek Kitszel <przemyslaw.kitszel@...el.com>
To:     intel-wired-lan@...osl.org
Cc:     netdev@...r.kernel.org, Tony Nguyen <anthony.l.nguyen@...el.com>,
        Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>,
        Przemek Kitszel <przemyslaw.kitszel@...el.com>
Subject: [PATCH net-next 1/2] ice: Add support for 100G KR2/CR2/SR2 link reporting

From: Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>

Commit 2736d94f351b ("ethtool: Added support for 50Gbps per lane link modes")
in v5.1 added (among other things) support for 100G CR2/KR2/SR2 link modes.
Advertise these link modes if the firmware reports the corresponding PHY types.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_ethtool.c | 42 +++++++++++++++-----
 1 file changed, 33 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index ba4ccc5f7d60..417efc401001 100644
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -1950,8 +1950,7 @@ ice_phy_type_to_ethtool(struct net_device *netdev,
 			   ICE_PHY_TYPE_LOW_100G_CAUI4 |
 			   ICE_PHY_TYPE_LOW_100G_AUI4_AOC_ACC |
 			   ICE_PHY_TYPE_LOW_100G_AUI4 |
-			   ICE_PHY_TYPE_LOW_100GBASE_CR_PAM4 |
-			   ICE_PHY_TYPE_LOW_100GBASE_CP2;
+			   ICE_PHY_TYPE_LOW_100GBASE_CR_PAM4;
 	phy_type_mask_hi = ICE_PHY_TYPE_HIGH_100G_CAUI2_AOC_ACC |
 			   ICE_PHY_TYPE_HIGH_100G_CAUI2 |
 			   ICE_PHY_TYPE_HIGH_100G_AUI2_AOC_ACC |
@@ -1964,15 +1963,28 @@ ice_phy_type_to_ethtool(struct net_device *netdev,
 						100000baseCR4_Full);
 	}
 
-	phy_type_mask_lo = ICE_PHY_TYPE_LOW_100GBASE_SR4 |
-			   ICE_PHY_TYPE_LOW_100GBASE_SR2;
-	if (phy_types_low & phy_type_mask_lo) {
+	if (phy_types_low & ICE_PHY_TYPE_LOW_100GBASE_CP2) {
+		ethtool_link_ksettings_add_link_mode(ks, supported,
+						     100000baseCR2_Full);
+		ice_ethtool_advertise_link_mode(ICE_AQ_LINK_SPEED_100GB,
+						100000baseCR2_Full);
+	}
+
+	if (phy_types_low & ICE_PHY_TYPE_LOW_100GBASE_SR4) {
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     100000baseSR4_Full);
 		ice_ethtool_advertise_link_mode(ICE_AQ_LINK_SPEED_100GB,
 						100000baseSR4_Full);
 	}
 
+	if (phy_types_low & ICE_PHY_TYPE_LOW_100GBASE_SR2) {
+		ethtool_link_ksettings_add_link_mode(ks, supported,
+						     100000baseSR2_Full);
+		ice_ethtool_advertise_link_mode(ICE_AQ_LINK_SPEED_100GB,
+						100000baseSR2_Full);
+
+	}
+
 	phy_type_mask_lo = ICE_PHY_TYPE_LOW_100GBASE_LR4 |
 			   ICE_PHY_TYPE_LOW_100GBASE_DR;
 	if (phy_types_low & phy_type_mask_lo) {
@@ -1984,14 +1996,20 @@ ice_phy_type_to_ethtool(struct net_device *netdev,
 
 	phy_type_mask_lo = ICE_PHY_TYPE_LOW_100GBASE_KR4 |
 			   ICE_PHY_TYPE_LOW_100GBASE_KR_PAM4;
-	phy_type_mask_hi = ICE_PHY_TYPE_HIGH_100GBASE_KR2_PAM4;
-	if (phy_types_low & phy_type_mask_lo ||
-	    phy_types_high & phy_type_mask_hi) {
+	if (phy_types_low & phy_type_mask_lo) {
 		ethtool_link_ksettings_add_link_mode(ks, supported,
 						     100000baseKR4_Full);
 		ice_ethtool_advertise_link_mode(ICE_AQ_LINK_SPEED_100GB,
 						100000baseKR4_Full);
 	}
+
+	if (phy_types_high & ICE_PHY_TYPE_HIGH_100GBASE_KR2_PAM4) {
+		ethtool_link_ksettings_add_link_mode(ks, supported,
+						     100000baseKR2_Full);
+		ice_ethtool_advertise_link_mode(ICE_AQ_LINK_SPEED_100GB,
+						100000baseKR2_Full);
+	}
+
 }
 
 #define TEST_SET_BITS_TIMEOUT	50
@@ -2299,7 +2317,13 @@ ice_ksettings_find_adv_link_speed(const struct ethtool_link_ksettings *ks)
 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
 						  100000baseLR4_ER4_Full) ||
 	    ethtool_link_ksettings_test_link_mode(ks, advertising,
-						  100000baseKR4_Full))
+						  100000baseKR4_Full) ||
+	    ethtool_link_ksettings_test_link_mode(ks, advertising,
+						  100000baseCR2_Full) ||
+	    ethtool_link_ksettings_test_link_mode(ks, advertising,
+						  100000baseSR2_Full) ||
+	    ethtool_link_ksettings_test_link_mode(ks, advertising,
+						  100000baseKR2_Full))
 		adv_link_speed |= ICE_AQ_LINK_SPEED_100GB;
 
 	return adv_link_speed;
-- 
2.34.3