ixgbevf: Use mac_ops instead of trying to identify NIC type

BugLink: http://bugs.launchpad.net/bugs/1616677

This change makes it so that we can just use function pointers instead of
having to identify if a given VF is running on a Linux or Windows PF.  By
doing this we can avoid having to pull too much information out of the
lower layers and can instead just make use of the mac_ops pointers since
they should differ between the two types of VFs anyway.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 2f8214fe)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Acked-by: Kamal Mostafa <kamal@canonical.com>

drivers/net/ethernet/intel/ixgbevf/ixgbevf.h

@@ -494,7 +494,6 @@ void ixgbevf_free_rx_resources(struct ixgbevf_ring *);
 void ixgbevf_free_tx_resources(struct ixgbevf_ring *);
 void ixgbevf_update_stats(struct ixgbevf_adapter *adapter);
 int ethtool_ioctl(struct ifreq *ifr);
-bool ixgbevf_on_hyperv(struct ixgbe_hw *hw);
 
 extern void ixgbevf_write_eitr(struct ixgbevf_q_vector *q_vector);
 

drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c

@@ -1809,10 +1809,7 @@ static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter)
 		ixgbevf_setup_vfmrqc(adapter);
 
 	/* notify the PF of our intent to use this size of frame */
-	if (!ixgbevf_on_hyperv(hw))
-		ixgbevf_rlpml_set_vf(hw, netdev->mtu + ETH_HLEN + ETH_FCS_LEN);
-	else
-		ixgbevf_hv_rlpml_set_vf(hw, netdev->mtu + ETH_HLEN + ETH_FCS_LEN);
+	hw->mac.ops.set_rlpml(hw, netdev->mtu + ETH_HLEN + ETH_FCS_LEN);
 
 	/* Setup the HW Rx Head and Tail Descriptor Pointers and
 	 * the Base and Length of the Rx Descriptor Ring
@@ -2073,10 +2070,7 @@ static void ixgbevf_negotiate_api(struct ixgbevf_adapter *adapter)
 	spin_lock_bh(&adapter->mbx_lock);
 
 	while (api[idx] != ixgbe_mbox_api_unknown) {
-		if (!ixgbevf_on_hyperv(hw))
-			err = hw->mac.ops.negotiate_api_version(hw, api[idx]);
-		else
-			err = ixgbevf_hv_negotiate_api_version(hw, api[idx]);
+		err = hw->mac.ops.negotiate_api_version(hw, api[idx]);
 		if (!err)
 			break;
 		idx++;
@@ -3750,10 +3744,7 @@ static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
 	netdev->mtu = new_mtu;
 
 	/* notify the PF of our intent to use this size of frame */
-	if (!ixgbevf_on_hyperv(hw))
-		ixgbevf_rlpml_set_vf(hw, max_frame);
-	else
-		ixgbevf_hv_rlpml_set_vf(hw, max_frame);
+	hw->mac.ops.set_rlpml(hw, max_frame);
 
 	return 0;
 }

drivers/net/ethernet/intel/ixgbevf/vf.c

@@ -797,11 +797,11 @@ static s32 ixgbevf_hv_check_mac_link_vf(struct ixgbe_hw *hw,
 }
 
 /**
- *  ixgbevf_rlpml_set_vf - Set the maximum receive packet length
+ *  ixgbevf_set_rlpml_vf - Set the maximum receive packet length
  *  @hw: pointer to the HW structure
  *  @max_size: value to assign to max frame size
  **/
-void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
+static void ixgbevf_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
 {
 	u32 msgbuf[2];
 
@@ -811,12 +811,12 @@ void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
 }
 
 /**
- * ixgbevf_hv_rlpml_set_vf - Set the maximum receive packet length
+ * ixgbevf_hv_set_rlpml_vf - Set the maximum receive packet length
  * @hw: pointer to the HW structure
  * @max_size: value to assign to max frame size
  * Hyper-V variant.
  **/
-void ixgbevf_hv_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
+static void ixgbevf_hv_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
 {
 	u32 reg;
 
@@ -864,12 +864,12 @@ static int ixgbevf_negotiate_api_version_vf(struct ixgbe_hw *hw, int api)
 }
 
 /**
- *  ixgbevf_hv_negotiate_api_version - Negotiate supported API version
+ *  ixgbevf_hv_negotiate_api_version_vf - Negotiate supported API version
  *  @hw: pointer to the HW structure
  *  @api: integer containing requested API version
  *  Hyper-V version - only ixgbe_mbox_api_10 supported.
  **/
-int ixgbevf_hv_negotiate_api_version(struct ixgbe_hw *hw, int api)
+static int ixgbevf_hv_negotiate_api_version_vf(struct ixgbe_hw *hw, int api)
 {
 	/* Hyper-V only supports api version ixgbe_mbox_api_10 */
 	if (api != ixgbe_mbox_api_10)
@@ -950,6 +950,7 @@ static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
 	.update_xcast_mode	= ixgbevf_update_xcast_mode,
 	.set_uc_addr		= ixgbevf_set_uc_addr_vf,
 	.set_vfta		= ixgbevf_set_vfta_vf,
+	.set_rlpml		= ixgbevf_set_rlpml_vf,
 };
 
 static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = {
@@ -960,11 +961,13 @@ static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = {
 	.stop_adapter		= ixgbevf_stop_hw_vf,
 	.setup_link		= ixgbevf_setup_mac_link_vf,
 	.check_link		= ixgbevf_hv_check_mac_link_vf,
+	.negotiate_api_version	= ixgbevf_hv_negotiate_api_version_vf,
 	.set_rar		= ixgbevf_hv_set_rar_vf,
 	.update_mc_addr_list	= ixgbevf_hv_update_mc_addr_list_vf,
 	.update_xcast_mode	= ixgbevf_hv_update_xcast_mode,
 	.set_uc_addr		= ixgbevf_hv_set_uc_addr_vf,
 	.set_vfta		= ixgbevf_hv_set_vfta_vf,
+	.set_rlpml		= ixgbevf_hv_set_rlpml_vf,
 };
 
 const struct ixgbevf_info ixgbevf_82599_vf_info = {
@@ -1006,8 +1009,3 @@ const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info = {
 	.mac = ixgbe_mac_X550EM_x_vf,
 	.mac_ops = &ixgbevf_hv_mac_ops,
 };
-
-bool ixgbevf_on_hyperv(struct ixgbe_hw *hw)
-{
-	return hw->mbx.ops.check_for_msg == NULL;
-}

drivers/net/ethernet/intel/ixgbevf/vf.h

@@ -69,6 +69,7 @@ struct ixgbe_mac_operations {
 	s32 (*disable_mc)(struct ixgbe_hw *);
 	s32 (*clear_vfta)(struct ixgbe_hw *);
 	s32 (*set_vfta)(struct ixgbe_hw *, u32, u32, bool);
+	void (*set_rlpml)(struct ixgbe_hw *, u16);
 };
 
 enum ixgbe_mac_type {
@@ -208,9 +209,6 @@ static inline u32 ixgbe_read_reg_array(struct ixgbe_hw *hw, u32 reg,
 
 #define IXGBE_READ_REG_ARRAY(h, r, o) ixgbe_read_reg_array(h, r, o)
 
-void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size);
-void ixgbevf_hv_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size);
-int ixgbevf_hv_negotiate_api_version(struct ixgbe_hw *hw, int api);
 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
 		       unsigned int *default_tc);
 int ixgbevf_get_reta_locked(struct ixgbe_hw *hw, u32 *reta, int num_rx_queues);