[PATCH] net/ixgbe: notify VF when PF link status changes

[alexz@att.com]

From: Alex Zelezniak <alexz@att.com>

Signed-off-by: Alex Zelezniak <alexz@att.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c  | 33 +++++++++++++++++++++++++++++++++
 drivers/net/ixgbe/rte_pmd_ixgbe.h | 14 ++++++++++++++
 2 files changed, 47 insertions(+)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 7169007..a0e7aeb 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -4894,6 +4894,39 @@ static void ixgbevf_set_vfta_all(struct rte_eth_dev *dev, bool on)
 	return new_val;
 }
 
+int
+rte_pmd_ixgbe_ping_vfs(uint8_t port, uint16_t vf)
+{
+	struct ixgbe_hw *hw;
+	struct ixgbe_vf_info *vfinfo;
+	struct rte_eth_dev *dev;
+	struct rte_pci_device *pci_dev;
+	uint32_t ctrl;
+
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV);
+
+	dev = &rte_eth_devices[port];
+	pci_dev = IXGBE_DEV_TO_PCI(dev);
+
+	if (!is_device_supported(dev, &rte_ixgbe_pmd))
+		return -ENOTSUP;
+
+	if (vf >= pci_dev->max_vfs)
+		return -EINVAL;
+
+	hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	vfinfo = *(IXGBE_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private));
+
+	hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+	ctrl = IXGBE_PF_CONTROL_MSG;
+	if (vfinfo[vf].clear_to_send)
+		ctrl |= IXGBE_VT_MSGTYPE_CTS;
+
+	ixgbe_write_mbx(hw, &ctrl, 1, vf);
+
+	return 0;
+}
 
 int
 rte_pmd_ixgbe_set_vf_vlan_anti_spoof(uint8_t port, uint16_t vf, uint8_t on)
diff --git a/drivers/net/ixgbe/rte_pmd_ixgbe.h b/drivers/net/ixgbe/rte_pmd_ixgbe.h
index 4d7b507..7f27992 100644
--- a/drivers/net/ixgbe/rte_pmd_ixgbe.h
+++ b/drivers/net/ixgbe/rte_pmd_ixgbe.h
@@ -42,6 +42,20 @@
 #include <rte_ethdev.h>
 
 /**
+ * Notify VF when PF link status changes.
+ *
+ * @param port
+ *   The port identifier of the Ethernet device.
+ * @param vf
+ *   VF id.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENODEV) if *port* invalid.
+ *   - (-EINVAL) if *vf* invalid.
+ */
+int rte_pmd_ixgbe_ping_vfs(uint8_t port, uint16_t vf);
+
+/**
  * Set the VF MAC address.
  *
  * @param port
-- 
1.9.1