bnxt_en: refactor speed independent ethtool modes

A future patch in this series will change the algorithm used to
determine ethtool speed and media modes. Extract the handling of
the unrelated pause, autoneg modes into an independent function.
Also separate FEC handling out of bnxt_fw_to_ethtool_*_spds().

No functional change.
Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

@@ -1730,7 +1730,7 @@ bnxt_get_link_mode(struct bnxt_link_info *link_info)
 	return link_mode;
 }
 
-#define BNXT_FW_TO_ETHTOOL_SPDS(fw_speeds, fw_pause, lk_ksettings, name)\
+#define BNXT_FW_TO_ETHTOOL_SPDS(fw_speeds, lk_ksettings, name)		\
 {									\
 	if ((fw_speeds) & BNXT_LINK_SPEED_MSK_100MB)			\
 		ethtool_link_ksettings_add_link_mode(lk_ksettings, name,\
@@ -1753,16 +1753,6 @@ bnxt_get_link_mode(struct bnxt_link_info *link_info)
 	if ((fw_speeds) & BNXT_LINK_SPEED_MSK_100GB)			\
 		ethtool_link_ksettings_add_link_mode(lk_ksettings, name,\
 						     100000baseCR4_Full);\
-	if ((fw_pause) & BNXT_LINK_PAUSE_RX) {				\
-		ethtool_link_ksettings_add_link_mode(lk_ksettings, name,\
-						     Pause);		\
-		if (!((fw_pause) & BNXT_LINK_PAUSE_TX))			\
-			ethtool_link_ksettings_add_link_mode(		\
-					lk_ksettings, name, Asym_Pause);\
-	} else if ((fw_pause) & BNXT_LINK_PAUSE_TX) {			\
-		ethtool_link_ksettings_add_link_mode(lk_ksettings, name,\
-						     Asym_Pause);	\
-	}								\
 }
 
 #define BNXT_ETHTOOL_TO_FW_SPDS(fw_speeds, lk_ksettings, name)		\
@@ -1820,6 +1810,39 @@ bnxt_get_link_mode(struct bnxt_link_info *link_info)
 		(fw_speeds) |= BNXT_LINK_PAM4_SPEED_MSK_200GB;		\
 }
 
+static void bnxt_get_ethtool_modes(struct bnxt_link_info *link_info,
+				   struct ethtool_link_ksettings *lk_ksettings)
+{
+	struct bnxt *bp = container_of(link_info, struct bnxt, link_info);
+
+	if (!(bp->phy_flags & BNXT_PHY_FL_NO_PAUSE)) {
+		ethtool_link_ksettings_add_link_mode(lk_ksettings, supported,
+						     Pause);
+		ethtool_link_ksettings_add_link_mode(lk_ksettings, supported,
+						     Asym_Pause);
+	}
+
+	if (link_info->support_auto_speeds || link_info->support_pam4_auto_speeds)
+		ethtool_link_ksettings_add_link_mode(lk_ksettings, supported,
+						     Autoneg);
+
+	if (~link_info->autoneg & BNXT_AUTONEG_FLOW_CTRL)
+		return;
+
+	if (link_info->auto_pause_setting & BNXT_LINK_PAUSE_RX)
+		ethtool_link_ksettings_add_link_mode(lk_ksettings, advertising,
+						     Pause);
+	if (hweight8(link_info->auto_pause_setting & BNXT_LINK_PAUSE_BOTH) == 1)
+		ethtool_link_ksettings_add_link_mode(lk_ksettings, advertising,
+						     Asym_Pause);
+	if (link_info->lp_pause & BNXT_LINK_PAUSE_RX)
+		ethtool_link_ksettings_add_link_mode(lk_ksettings,
+						     lp_advertising, Pause);
+	if (hweight8(link_info->lp_pause & BNXT_LINK_PAUSE_BOTH) == 1)
+		ethtool_link_ksettings_add_link_mode(lk_ksettings,
+						     lp_advertising, Asym_Pause);
+}
+
 static void bnxt_fw_to_ethtool_advertised_fec(struct bnxt_link_info *link_info,
 				struct ethtool_link_ksettings *lk_ksettings)
 {
@@ -1845,28 +1868,18 @@ static void bnxt_fw_to_ethtool_advertised_spds(struct bnxt_link_info *link_info,
 				struct ethtool_link_ksettings *lk_ksettings)
 {
 	u16 fw_speeds = link_info->advertising;
-	u8 fw_pause = 0;
 
-	if (link_info->autoneg & BNXT_AUTONEG_FLOW_CTRL)
-		fw_pause = link_info->auto_pause_setting;
-
-	BNXT_FW_TO_ETHTOOL_SPDS(fw_speeds, fw_pause, lk_ksettings, advertising);
+	BNXT_FW_TO_ETHTOOL_SPDS(fw_speeds, lk_ksettings, advertising);
 	fw_speeds = link_info->advertising_pam4;
 	BNXT_FW_TO_ETHTOOL_PAM4_SPDS(fw_speeds, lk_ksettings, advertising);
-	bnxt_fw_to_ethtool_advertised_fec(link_info, lk_ksettings);
 }
 
 static void bnxt_fw_to_ethtool_lp_adv(struct bnxt_link_info *link_info,
 				struct ethtool_link_ksettings *lk_ksettings)
 {
 	u16 fw_speeds = link_info->lp_auto_link_speeds;
-	u8 fw_pause = 0;
 
-	if (link_info->autoneg & BNXT_AUTONEG_FLOW_CTRL)
-		fw_pause = link_info->lp_pause;
-
-	BNXT_FW_TO_ETHTOOL_SPDS(fw_speeds, fw_pause, lk_ksettings,
-				lp_advertising);
+	BNXT_FW_TO_ETHTOOL_SPDS(fw_speeds, lk_ksettings, lp_advertising);
 	fw_speeds = link_info->lp_auto_pam4_link_speeds;
 	BNXT_FW_TO_ETHTOOL_PAM4_SPDS(fw_speeds, lk_ksettings, lp_advertising);
 }
@@ -1895,25 +1908,11 @@ static void bnxt_fw_to_ethtool_support_fec(struct bnxt_link_info *link_info,
 static void bnxt_fw_to_ethtool_support_spds(struct bnxt_link_info *link_info,
 				struct ethtool_link_ksettings *lk_ksettings)
 {
-	struct bnxt *bp = container_of(link_info, struct bnxt, link_info);
 	u16 fw_speeds = link_info->support_speeds;
 
-	BNXT_FW_TO_ETHTOOL_SPDS(fw_speeds, 0, lk_ksettings, supported);
+	BNXT_FW_TO_ETHTOOL_SPDS(fw_speeds, lk_ksettings, supported);
 	fw_speeds = link_info->support_pam4_speeds;
 	BNXT_FW_TO_ETHTOOL_PAM4_SPDS(fw_speeds, lk_ksettings, supported);
-
-	if (!(bp->phy_flags & BNXT_PHY_FL_NO_PAUSE)) {
-		ethtool_link_ksettings_add_link_mode(lk_ksettings, supported,
-						     Pause);
-		ethtool_link_ksettings_add_link_mode(lk_ksettings, supported,
-						     Asym_Pause);
-	}
-
-	if (link_info->support_auto_speeds ||
-	    link_info->support_pam4_auto_speeds)
-		ethtool_link_ksettings_add_link_mode(lk_ksettings, supported,
-						     Autoneg);
-	bnxt_fw_to_ethtool_support_fec(link_info, lk_ksettings);
 }
 
 u32 bnxt_fw_to_ethtool_speed(u16 fw_link_speed)
@@ -1977,7 +1976,9 @@ static int bnxt_get_link_ksettings(struct net_device *dev,
 	link_info = &bp->link_info;
 
 	mutex_lock(&bp->link_lock);
+	bnxt_get_ethtool_modes(link_info, lk_ksettings);
 	bnxt_fw_to_ethtool_support_spds(link_info, lk_ksettings);
+	bnxt_fw_to_ethtool_support_fec(link_info, lk_ksettings);
 	link_mode = bnxt_get_link_mode(link_info);
 	if (link_mode != BNXT_LINK_MODE_UNKNOWN)
 		ethtool_params_from_link_mode(lk_ksettings, link_mode);
@@ -1986,6 +1987,7 @@ static int bnxt_get_link_ksettings(struct net_device *dev,
 
 	if (link_info->autoneg) {
 		bnxt_fw_to_ethtool_advertised_spds(link_info, lk_ksettings);
+		bnxt_fw_to_ethtool_advertised_fec(link_info, lk_ksettings);
 		ethtool_link_ksettings_add_link_mode(lk_ksettings,
 						     advertising, Autoneg);
 		base->autoneg = AUTONEG_ENABLE;