[Intel-wired-lan] [PATCH net-next V5 0/2] ethernet: intel: Support Hyper-V hosts

[Intel-wired-lan] [PATCH net-next V5 0/2] ethernet: intel: Support Hyper-V hosts

[K. Y. Srinivasan]

Make adjustments to the Intel 10G VF driver to support
running on Hyper-V hosts.

K. Y. Srinivasan (2):
  ethernet: intel: Add the device ID's presented while running on
    Hyper-V
  intel: ixgbevf: Support Windows hosts (Hyper-V)

 drivers/net/ethernet/intel/ixgbevf/defines.h      |    5 +
 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
 drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
 drivers/net/ethernet/intel/ixgbevf/vf.c           |  216 +++++++++++++++++++++
 drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
 6 files changed, 271 insertions(+), 7 deletions(-)

-- 
1.7.4.1

[PATCH net-next V5 0/2] ethernet: intel: Support Hyper-V hosts

[K. Y. Srinivasan]

Make adjustments to the Intel 10G VF driver to support
running on Hyper-V hosts.

K. Y. Srinivasan (2):
  ethernet: intel: Add the device ID's presented while running on
    Hyper-V
  intel: ixgbevf: Support Windows hosts (Hyper-V)

 drivers/net/ethernet/intel/ixgbevf/defines.h      |    5 +
 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
 drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
 drivers/net/ethernet/intel/ixgbevf/vf.c           |  216 +++++++++++++++++++++
 drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
 6 files changed, 271 insertions(+), 7 deletions(-)

-- 
1.7.4.1

[PATCH net-next V5 0/2] ethernet: intel: Support Hyper-V hosts

[K. Y. Srinivasan]

Make adjustments to the Intel 10G VF driver to support
running on Hyper-V hosts.

K. Y. Srinivasan (2):
  ethernet: intel: Add the device ID's presented while running on
    Hyper-V
  intel: ixgbevf: Support Windows hosts (Hyper-V)

 drivers/net/ethernet/intel/ixgbevf/defines.h      |    5 +
 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
 drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
 drivers/net/ethernet/intel/ixgbevf/vf.c           |  216 +++++++++++++++++++++
 drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
 6 files changed, 271 insertions(+), 7 deletions(-)

-- 
1.7.4.1

[Intel-wired-lan] [PATCH net-next V5 1/2] ethernet: intel: Add the device ID's presented while running on Hyper-V

[K. Y. Srinivasan]

Intel SR-IOV cards present different ID when running on Hyper-V.
Add the device IDs presented while running on Hyper-V.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
	V5: No change from V1

 drivers/net/ethernet/intel/ixgbevf/defines.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/defines.h b/drivers/net/ethernet/intel/ixgbevf/defines.h
index 5843458..1306a0d 100644
--- a/drivers/net/ethernet/intel/ixgbevf/defines.h
+++ b/drivers/net/ethernet/intel/ixgbevf/defines.h
@@ -33,6 +33,11 @@
 #define IXGBE_DEV_ID_X550_VF		0x1565
 #define IXGBE_DEV_ID_X550EM_X_VF	0x15A8
 
+#define IXGBE_DEV_ID_82599_VF_HV	0x152E
+#define IXGBE_DEV_ID_X540_VF_HV		0x1530
+#define IXGBE_DEV_ID_X550_VF_HV		0x1564
+#define IXGBE_DEV_ID_X550EM_X_VF_HV	0x15A9
+
 #define IXGBE_VF_IRQ_CLEAR_MASK		7
 #define IXGBE_VF_MAX_TX_QUEUES		8
 #define IXGBE_VF_MAX_RX_QUEUES		8
-- 
1.7.4.1

[PATCH net-next V5 1/2] ethernet: intel: Add the device ID's presented while running on Hyper-V

[K. Y. Srinivasan]

Intel SR-IOV cards present different ID when running on Hyper-V.
Add the device IDs presented while running on Hyper-V.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
	V5: No change from V1

 drivers/net/ethernet/intel/ixgbevf/defines.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/defines.h b/drivers/net/ethernet/intel/ixgbevf/defines.h
index 5843458..1306a0d 100644
--- a/drivers/net/ethernet/intel/ixgbevf/defines.h
+++ b/drivers/net/ethernet/intel/ixgbevf/defines.h
@@ -33,6 +33,11 @@
 #define IXGBE_DEV_ID_X550_VF		0x1565
 #define IXGBE_DEV_ID_X550EM_X_VF	0x15A8
 
+#define IXGBE_DEV_ID_82599_VF_HV	0x152E
+#define IXGBE_DEV_ID_X540_VF_HV		0x1530
+#define IXGBE_DEV_ID_X550_VF_HV		0x1564
+#define IXGBE_DEV_ID_X550EM_X_VF_HV	0x15A9
+
 #define IXGBE_VF_IRQ_CLEAR_MASK		7
 #define IXGBE_VF_MAX_TX_QUEUES		8
 #define IXGBE_VF_MAX_RX_QUEUES		8
-- 
1.7.4.1

[PATCH net-next V5 1/2] ethernet: intel: Add the device ID's presented while running on Hyper-V

[K. Y. Srinivasan]

Intel SR-IOV cards present different ID when running on Hyper-V.
Add the device IDs presented while running on Hyper-V.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
	V5: No change from V1

 drivers/net/ethernet/intel/ixgbevf/defines.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/defines.h b/drivers/net/ethernet/intel/ixgbevf/defines.h
index 5843458..1306a0d 100644
--- a/drivers/net/ethernet/intel/ixgbevf/defines.h
+++ b/drivers/net/ethernet/intel/ixgbevf/defines.h
@@ -33,6 +33,11 @@
 #define IXGBE_DEV_ID_X550_VF		0x1565
 #define IXGBE_DEV_ID_X550EM_X_VF	0x15A8
 
+#define IXGBE_DEV_ID_82599_VF_HV	0x152E
+#define IXGBE_DEV_ID_X540_VF_HV		0x1530
+#define IXGBE_DEV_ID_X550_VF_HV		0x1564
+#define IXGBE_DEV_ID_X550EM_X_VF_HV	0x15A9
+
 #define IXGBE_VF_IRQ_CLEAR_MASK		7
 #define IXGBE_VF_MAX_TX_QUEUES		8
 #define IXGBE_VF_MAX_RX_QUEUES		8
-- 
1.7.4.1

[Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[K. Y. Srinivasan]

On Hyper-V, the VF/PF communication is a via software mediated path
as opposed to the hardware mailbox. Make the necessary
adjustments to support Hyper-V.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
	V2: Addressed most of the comments from
	    Alexander Duyck <alexander.duyck@gmail.com>
	    and Rustad, Mark D <mark.d.rustad@intel.com>.

	V3: Addressed additional comments from
	    Alexander Duyck <alexander.duyck@gmail.com>

	V4: Addressed kbuild errors reported by:
	    kbuild test robot <lkp@intel.com>

	V5: Addressed additional comments from
	    Alexander Duyck <alexander.duyck@gmail.com>

 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
 drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
 drivers/net/ethernet/intel/ixgbevf/vf.c           |  216 +++++++++++++++++++++
 drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
 5 files changed, 266 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index 5ac60ee..3296d27 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -460,9 +460,13 @@ enum ixbgevf_state_t {
 
 enum ixgbevf_boards {
 	board_82599_vf,
+	board_82599_vf_hv,
 	board_X540_vf,
+	board_X540_vf_hv,
 	board_X550_vf,
+	board_X550_vf_hv,
 	board_X550EM_x_vf,
+	board_X550EM_x_vf_hv,
 };
 
 enum ixgbevf_xcast_modes {
@@ -477,6 +481,13 @@ extern const struct ixgbevf_info ixgbevf_X550_vf_info;
 extern const struct ixgbevf_info ixgbevf_X550EM_x_vf_info;
 extern const struct ixgbe_mbx_operations ixgbevf_mbx_ops;
 
+
+extern const struct ixgbevf_info ixgbevf_82599_vf_hv_info;
+extern const struct ixgbevf_info ixgbevf_X540_vf_hv_info;
+extern const struct ixgbevf_info ixgbevf_X550_vf_hv_info;
+extern const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info;
+extern const struct ixgbe_mbx_operations ixgbevf_hv_mbx_ops;
+
 /* needed by ethtool.c */
 extern const char ixgbevf_driver_name[];
 extern const char ixgbevf_driver_version[];
@@ -494,6 +505,7 @@ 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);
 
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 007cbe0..c4bb480 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -62,10 +62,14 @@ static char ixgbevf_copyright[] =
 	"Copyright (c) 2009 - 2015 Intel Corporation.";
 
 static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
-	[board_82599_vf] = &ixgbevf_82599_vf_info,
-	[board_X540_vf]  = &ixgbevf_X540_vf_info,
-	[board_X550_vf]  = &ixgbevf_X550_vf_info,
-	[board_X550EM_x_vf] = &ixgbevf_X550EM_x_vf_info,
+	[board_82599_vf]	= &ixgbevf_82599_vf_info,
+	[board_82599_vf_hv]	= &ixgbevf_82599_vf_hv_info,
+	[board_X540_vf]		= &ixgbevf_X540_vf_info,
+	[board_X540_vf_hv]	= &ixgbevf_X540_vf_hv_info,
+	[board_X550_vf]		= &ixgbevf_X550_vf_info,
+	[board_X550_vf_hv]	= &ixgbevf_X550_vf_hv_info,
+	[board_X550EM_x_vf]	= &ixgbevf_X550EM_x_vf_info,
+	[board_X550EM_x_vf_hv]	= &ixgbevf_X550EM_x_vf_hv_info,
 };
 
 /* ixgbevf_pci_tbl - PCI Device ID Table
@@ -78,9 +82,13 @@ static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
  */
 static const struct pci_device_id ixgbevf_pci_tbl[] = {
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF), board_82599_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF_HV), board_82599_vf_hv },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540_VF), board_X540_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540_VF_HV), board_X540_vf_hv },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550_VF), board_X550_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550_VF_HV), board_X550_vf_hv },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_VF), board_X550EM_x_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_VF_HV), board_X550EM_x_vf_hv},
 	/* required last entry */
 	{0, }
 };
@@ -1795,7 +1803,10 @@ 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 */
-	ixgbevf_rlpml_set_vf(hw, netdev->mtu + ETH_HLEN + ETH_FCS_LEN);
+	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);
 
 	/* Setup the HW Rx Head and Tail Descriptor Pointers and
 	 * the Base and Length of the Rx Descriptor Ring
@@ -2056,7 +2067,10 @@ static void ixgbevf_negotiate_api(struct ixgbevf_adapter *adapter)
 	spin_lock_bh(&adapter->mbx_lock);
 
 	while (api[idx] != ixgbe_mbox_api_unknown) {
-		err = ixgbevf_negotiate_api_version(hw, api[idx]);
+		if (!ixgbevf_on_hyperv(hw))
+			err = ixgbevf_negotiate_api_version(hw, api[idx]);
+		else
+			err = ixgbevf_hv_negotiate_api_version(hw, api[idx]);
 		if (!err)
 			break;
 		idx++;
@@ -3727,7 +3741,10 @@ 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 */
-	ixgbevf_rlpml_set_vf(hw, max_frame);
+	if (!ixgbevf_on_hyperv(hw))
+		ixgbevf_rlpml_set_vf(hw, max_frame);
+	else
+		ixgbevf_hv_rlpml_set_vf(hw, max_frame);
 
 	return 0;
 }
diff --git a/drivers/net/ethernet/intel/ixgbevf/mbx.c b/drivers/net/ethernet/intel/ixgbevf/mbx.c
index dc68fea..298a0da 100644
--- a/drivers/net/ethernet/intel/ixgbevf/mbx.c
+++ b/drivers/net/ethernet/intel/ixgbevf/mbx.c
@@ -346,3 +346,15 @@ const struct ixgbe_mbx_operations ixgbevf_mbx_ops = {
 	.check_for_rst	= ixgbevf_check_for_rst_vf,
 };
 
+/**
+ * Mailbox operations when running on Hyper-V.
+ * On Hyper-V, PF/VF communiction is not through the
+ * hardware mailbox; this communication is through
+ * a software mediated path.
+ * Most mail box operations are noop while running on
+ * Hyper-V.
+ */
+const struct ixgbe_mbx_operations ixgbevf_hv_mbx_ops = {
+	.init_params	= ixgbevf_init_mbx_params_vf,
+	.check_for_rst	= ixgbevf_check_for_rst_vf,
+};
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c
index 4d613a4..7208956 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.c
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.c
@@ -27,6 +27,13 @@
 #include "vf.h"
 #include "ixgbevf.h"
 
+/*
+ * On Hyper-V, to reset, we need to read from this offset
+ * from the PCI config space. This is the mechanism used on
+ * Hyper-V to support PF/VF communication.
+ */
+#define IXGBE_HV_RESET_OFFSET           0x201
+
 /**
  *  ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx
  *  @hw: pointer to hardware structure
@@ -126,6 +133,27 @@ static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
 }
 
 /**
+ * Hyper-V variant; the VF/PF communication is through the PCI
+ * config space.
+ */
+static s32 ixgbevf_hv_reset_hw_vf(struct ixgbe_hw *hw)
+{
+#if IS_ENABLED(CONFIG_PCI_MMCONFIG)
+	struct ixgbevf_adapter *adapter = hw->back;
+	int i;
+
+	for (i = 0; i < 6; i++)
+		pci_read_config_byte(adapter->pdev,
+				     (i + IXGBE_HV_RESET_OFFSET),
+				     &hw->mac.perm_addr[i]);
+	return 0;
+#else
+	pr_err("PCI_MMCONFIG needs to be enabled for Hyper-V\n");
+	return -EOPNOTSUPP;
+#endif
+}
+
+/**
  *  ixgbevf_stop_hw_vf - Generic stop Tx/Rx units
  *  @hw: pointer to hardware structure
  *
@@ -258,6 +286,11 @@ static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
 	return ret_val;
 }
 
+static s32 ixgbevf_hv_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
+{
+	return -EOPNOTSUPP;
+}
+
 /**
  * ixgbevf_get_reta_locked - get the RSS redirection table (RETA) contents.
  * @adapter: pointer to the port handle
@@ -416,6 +449,26 @@ static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
 	return ret_val;
 }
 
+/**
+ *  ixgbevf_hv_set_rar_vf - set device MAC address Hyper-V variant
+ *  @hw: pointer to hardware structure
+ *  @index: Receive address register to write
+ *  @addr: Address to put into receive address register
+ *  @vmdq: Unused in this implementation
+ *
+ * We don't really allow setting the device MAC address. However,
+ * if the address being set is the permanent MAC address we will
+ * permit that.
+ **/
+static s32 ixgbevf_hv_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
+				 u32 vmdq)
+{
+	if (ether_addr_equal(addr, hw->mac.perm_addr))
+		return 0;
+
+	return -EOPNOTSUPP;
+}
+
 static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
 				       u32 *msg, u16 size)
 {
@@ -473,6 +526,15 @@ static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw,
 }
 
 /**
+ * Hyper-V variant - just a stub.
+ */
+static s32 ixgbevf_hv_update_mc_addr_list_vf(struct ixgbe_hw *hw,
+					  struct net_device *netdev)
+{
+	return -EOPNOTSUPP;
+}
+
+/**
  *  ixgbevf_update_xcast_mode - Update Multicast mode
  *  @hw: pointer to the HW structure
  *  @netdev: pointer to net device structure
@@ -513,6 +575,15 @@ static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw,
 }
 
 /**
+ * Hyper-V variant - just a stub.
+ */
+static s32 ixgbevf_hv_update_xcast_mode(struct ixgbe_hw *hw,
+					struct net_device *netdev, int xcast_mode)
+{
+	return -EOPNOTSUPP;
+}
+
+/**
  *  ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address
  *  @hw: pointer to the HW structure
  *  @vlan: 12 bit VLAN ID
@@ -551,6 +622,15 @@ mbx_err:
 }
 
 /**
+ * Hyper-V variant - just a stub.
+ */
+static s32 ixgbevf_hv_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
+				  bool vlan_on)
+{
+	return -EOPNOTSUPP;
+}
+
+/**
  *  ixgbevf_setup_mac_link_vf - Setup MAC link settings
  *  @hw: pointer to hardware structure
  *  @speed: Unused in this implementation
@@ -656,6 +736,67 @@ out:
 }
 
 /**
+ * Hyper-V variant; there is no mailbox communication.
+ */
+static s32 ixgbevf_hv_check_mac_link_vf(struct ixgbe_hw *hw,
+					ixgbe_link_speed *speed,
+					bool *link_up,
+					bool autoneg_wait_to_complete)
+{
+	struct ixgbe_mbx_info *mbx = &hw->mbx;
+	struct ixgbe_mac_info *mac = &hw->mac;
+	u32 links_reg;
+
+	/* If we were hit with a reset drop the link */
+	if (!mbx->ops.check_for_rst(hw) || !mbx->timeout)
+		mac->get_link_status = true;
+
+	if (!mac->get_link_status)
+		goto out;
+
+	/* if link status is down no point in checking to see if pf is up */
+	links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+	if (!(links_reg & IXGBE_LINKS_UP))
+		goto out;
+
+	/* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
+	 * before the link status is correct
+	 */
+	if (mac->type == ixgbe_mac_82599_vf) {
+		int i;
+
+		for (i = 0; i < 5; i++) {
+			udelay(100);
+			links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+
+			if (!(links_reg & IXGBE_LINKS_UP))
+				goto out;
+		}
+	}
+
+	switch (links_reg & IXGBE_LINKS_SPEED_82599) {
+	case IXGBE_LINKS_SPEED_10G_82599:
+		*speed = IXGBE_LINK_SPEED_10GB_FULL;
+		break;
+	case IXGBE_LINKS_SPEED_1G_82599:
+		*speed = IXGBE_LINK_SPEED_1GB_FULL;
+		break;
+	case IXGBE_LINKS_SPEED_100_82599:
+		*speed = IXGBE_LINK_SPEED_100_FULL;
+		break;
+	}
+
+	/* if we passed all the tests above then the link is up and we no
+	 * longer need to check for link
+	 */
+	mac->get_link_status = false;
+
+out:
+	*link_up = !mac->get_link_status;
+	return 0;
+}
+
+/**
  *  ixgbevf_rlpml_set_vf - Set the maximum receive packet length
  *  @hw: pointer to the HW structure
  *  @max_size: value to assign to max frame size
@@ -670,6 +811,25 @@ void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
 }
 
 /**
+ *  ixgbevf_hv_rlpml_set_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)
+{
+	u32 reg;
+
+	/* If we are on Hyper-V, we implement
+	 * this functionality differently.
+	 */
+	reg =  IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(0));
+	/* CRC == 4 */
+	reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN);
+	IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg);
+}
+
+/**
  *  ixgbevf_negotiate_api_version - Negotiate supported API version
  *  @hw: pointer to the HW structure
  *  @api: integer containing requested API version
@@ -703,6 +863,22 @@ int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
 	return err;
 }
 
+/**
+ *  ixgbevf_hv_negotiate_api_version - 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)
+{
+	/* Hyper-V only supports api version ixgbe_mbox_api_10
+	 */
+	if (api != ixgbe_mbox_api_10)
+		return IXGBE_ERR_INVALID_ARGUMENT;
+
+	return 0;
+}
+
 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
 		       unsigned int *default_tc)
 {
@@ -776,22 +952,62 @@ static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
 	.set_vfta		= ixgbevf_set_vfta_vf,
 };
 
+static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = {
+	.init_hw		= ixgbevf_init_hw_vf,
+	.reset_hw		= ixgbevf_hv_reset_hw_vf,
+	.start_hw		= ixgbevf_start_hw_vf,
+	.get_mac_addr		= ixgbevf_get_mac_addr_vf,
+	.stop_adapter		= ixgbevf_stop_hw_vf,
+	.setup_link		= ixgbevf_setup_mac_link_vf,
+	.check_link		= ixgbevf_hv_check_mac_link_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,
+};
+
 const struct ixgbevf_info ixgbevf_82599_vf_info = {
 	.mac = ixgbe_mac_82599_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
 
+const struct ixgbevf_info ixgbevf_82599_vf_hv_info = {
+	.mac = ixgbe_mac_82599_vf,
+	.mac_ops = &ixgbevf_hv_mac_ops,
+};
+
 const struct ixgbevf_info ixgbevf_X540_vf_info = {
 	.mac = ixgbe_mac_X540_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
 
+const struct ixgbevf_info ixgbevf_X540_vf_hv_info = {
+	.mac = ixgbe_mac_X540_vf,
+	.mac_ops = &ixgbevf_hv_mac_ops,
+};
+
 const struct ixgbevf_info ixgbevf_X550_vf_info = {
 	.mac = ixgbe_mac_X550_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
 
+const struct ixgbevf_info ixgbevf_X550_vf_hv_info = {
+	.mac = ixgbe_mac_X550_vf,
+	.mac_ops = &ixgbevf_hv_mac_ops,
+};
+
 const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = {
 	.mac = ixgbe_mac_X550EM_x_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
+
+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;
+}
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.h b/drivers/net/ethernet/intel/ixgbevf/vf.h
index ef9f773..658883e 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.h
@@ -208,7 +208,9 @@ 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_negotiate_api_version(struct ixgbe_hw *hw, int api);
+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);
-- 
1.7.4.1

[PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[K. Y. Srinivasan]

On Hyper-V, the VF/PF communication is a via software mediated path
as opposed to the hardware mailbox. Make the necessary
adjustments to support Hyper-V.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
	V2: Addressed most of the comments from
	    Alexander Duyck <alexander.duyck@gmail.com>
	    and Rustad, Mark D <mark.d.rustad@intel.com>.

	V3: Addressed additional comments from
	    Alexander Duyck <alexander.duyck@gmail.com>

	V4: Addressed kbuild errors reported by:
	    kbuild test robot <lkp@intel.com>

	V5: Addressed additional comments from
	    Alexander Duyck <alexander.duyck@gmail.com>

 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
 drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
 drivers/net/ethernet/intel/ixgbevf/vf.c           |  216 +++++++++++++++++++++
 drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
 5 files changed, 266 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index 5ac60ee..3296d27 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -460,9 +460,13 @@ enum ixbgevf_state_t {
 
 enum ixgbevf_boards {
 	board_82599_vf,
+	board_82599_vf_hv,
 	board_X540_vf,
+	board_X540_vf_hv,
 	board_X550_vf,
+	board_X550_vf_hv,
 	board_X550EM_x_vf,
+	board_X550EM_x_vf_hv,
 };
 
 enum ixgbevf_xcast_modes {
@@ -477,6 +481,13 @@ extern const struct ixgbevf_info ixgbevf_X550_vf_info;
 extern const struct ixgbevf_info ixgbevf_X550EM_x_vf_info;
 extern const struct ixgbe_mbx_operations ixgbevf_mbx_ops;
 
+
+extern const struct ixgbevf_info ixgbevf_82599_vf_hv_info;
+extern const struct ixgbevf_info ixgbevf_X540_vf_hv_info;
+extern const struct ixgbevf_info ixgbevf_X550_vf_hv_info;
+extern const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info;
+extern const struct ixgbe_mbx_operations ixgbevf_hv_mbx_ops;
+
 /* needed by ethtool.c */
 extern const char ixgbevf_driver_name[];
 extern const char ixgbevf_driver_version[];
@@ -494,6 +505,7 @@ 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);
 
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 007cbe0..c4bb480 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -62,10 +62,14 @@ static char ixgbevf_copyright[] =
 	"Copyright (c) 2009 - 2015 Intel Corporation.";
 
 static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
-	[board_82599_vf] = &ixgbevf_82599_vf_info,
-	[board_X540_vf]  = &ixgbevf_X540_vf_info,
-	[board_X550_vf]  = &ixgbevf_X550_vf_info,
-	[board_X550EM_x_vf] = &ixgbevf_X550EM_x_vf_info,
+	[board_82599_vf]	= &ixgbevf_82599_vf_info,
+	[board_82599_vf_hv]	= &ixgbevf_82599_vf_hv_info,
+	[board_X540_vf]		= &ixgbevf_X540_vf_info,
+	[board_X540_vf_hv]	= &ixgbevf_X540_vf_hv_info,
+	[board_X550_vf]		= &ixgbevf_X550_vf_info,
+	[board_X550_vf_hv]	= &ixgbevf_X550_vf_hv_info,
+	[board_X550EM_x_vf]	= &ixgbevf_X550EM_x_vf_info,
+	[board_X550EM_x_vf_hv]	= &ixgbevf_X550EM_x_vf_hv_info,
 };
 
 /* ixgbevf_pci_tbl - PCI Device ID Table
@@ -78,9 +82,13 @@ static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
  */
 static const struct pci_device_id ixgbevf_pci_tbl[] = {
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF), board_82599_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF_HV), board_82599_vf_hv },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540_VF), board_X540_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540_VF_HV), board_X540_vf_hv },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550_VF), board_X550_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550_VF_HV), board_X550_vf_hv },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_VF), board_X550EM_x_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_VF_HV), board_X550EM_x_vf_hv},
 	/* required last entry */
 	{0, }
 };
@@ -1795,7 +1803,10 @@ 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 */
-	ixgbevf_rlpml_set_vf(hw, netdev->mtu + ETH_HLEN + ETH_FCS_LEN);
+	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);
 
 	/* Setup the HW Rx Head and Tail Descriptor Pointers and
 	 * the Base and Length of the Rx Descriptor Ring
@@ -2056,7 +2067,10 @@ static void ixgbevf_negotiate_api(struct ixgbevf_adapter *adapter)
 	spin_lock_bh(&adapter->mbx_lock);
 
 	while (api[idx] != ixgbe_mbox_api_unknown) {
-		err = ixgbevf_negotiate_api_version(hw, api[idx]);
+		if (!ixgbevf_on_hyperv(hw))
+			err = ixgbevf_negotiate_api_version(hw, api[idx]);
+		else
+			err = ixgbevf_hv_negotiate_api_version(hw, api[idx]);
 		if (!err)
 			break;
 		idx++;
@@ -3727,7 +3741,10 @@ 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 */
-	ixgbevf_rlpml_set_vf(hw, max_frame);
+	if (!ixgbevf_on_hyperv(hw))
+		ixgbevf_rlpml_set_vf(hw, max_frame);
+	else
+		ixgbevf_hv_rlpml_set_vf(hw, max_frame);
 
 	return 0;
 }
diff --git a/drivers/net/ethernet/intel/ixgbevf/mbx.c b/drivers/net/ethernet/intel/ixgbevf/mbx.c
index dc68fea..298a0da 100644
--- a/drivers/net/ethernet/intel/ixgbevf/mbx.c
+++ b/drivers/net/ethernet/intel/ixgbevf/mbx.c
@@ -346,3 +346,15 @@ const struct ixgbe_mbx_operations ixgbevf_mbx_ops = {
 	.check_for_rst	= ixgbevf_check_for_rst_vf,
 };
 
+/**
+ * Mailbox operations when running on Hyper-V.
+ * On Hyper-V, PF/VF communiction is not through the
+ * hardware mailbox; this communication is through
+ * a software mediated path.
+ * Most mail box operations are noop while running on
+ * Hyper-V.
+ */
+const struct ixgbe_mbx_operations ixgbevf_hv_mbx_ops = {
+	.init_params	= ixgbevf_init_mbx_params_vf,
+	.check_for_rst	= ixgbevf_check_for_rst_vf,
+};
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c
index 4d613a4..7208956 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.c
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.c
@@ -27,6 +27,13 @@
 #include "vf.h"
 #include "ixgbevf.h"
 
+/*
+ * On Hyper-V, to reset, we need to read from this offset
+ * from the PCI config space. This is the mechanism used on
+ * Hyper-V to support PF/VF communication.
+ */
+#define IXGBE_HV_RESET_OFFSET           0x201
+
 /**
  *  ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx
  *  @hw: pointer to hardware structure
@@ -126,6 +133,27 @@ static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
 }
 
 /**
+ * Hyper-V variant; the VF/PF communication is through the PCI
+ * config space.
+ */
+static s32 ixgbevf_hv_reset_hw_vf(struct ixgbe_hw *hw)
+{
+#if IS_ENABLED(CONFIG_PCI_MMCONFIG)
+	struct ixgbevf_adapter *adapter = hw->back;
+	int i;
+
+	for (i = 0; i < 6; i++)
+		pci_read_config_byte(adapter->pdev,
+				     (i + IXGBE_HV_RESET_OFFSET),
+				     &hw->mac.perm_addr[i]);
+	return 0;
+#else
+	pr_err("PCI_MMCONFIG needs to be enabled for Hyper-V\n");
+	return -EOPNOTSUPP;
+#endif
+}
+
+/**
  *  ixgbevf_stop_hw_vf - Generic stop Tx/Rx units
  *  @hw: pointer to hardware structure
  *
@@ -258,6 +286,11 @@ static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
 	return ret_val;
 }
 
+static s32 ixgbevf_hv_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
+{
+	return -EOPNOTSUPP;
+}
+
 /**
  * ixgbevf_get_reta_locked - get the RSS redirection table (RETA) contents.
  * @adapter: pointer to the port handle
@@ -416,6 +449,26 @@ static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
 	return ret_val;
 }
 
+/**
+ *  ixgbevf_hv_set_rar_vf - set device MAC address Hyper-V variant
+ *  @hw: pointer to hardware structure
+ *  @index: Receive address register to write
+ *  @addr: Address to put into receive address register
+ *  @vmdq: Unused in this implementation
+ *
+ * We don't really allow setting the device MAC address. However,
+ * if the address being set is the permanent MAC address we will
+ * permit that.
+ **/
+static s32 ixgbevf_hv_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
+				 u32 vmdq)
+{
+	if (ether_addr_equal(addr, hw->mac.perm_addr))
+		return 0;
+
+	return -EOPNOTSUPP;
+}
+
 static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
 				       u32 *msg, u16 size)
 {
@@ -473,6 +526,15 @@ static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw,
 }
 
 /**
+ * Hyper-V variant - just a stub.
+ */
+static s32 ixgbevf_hv_update_mc_addr_list_vf(struct ixgbe_hw *hw,
+					  struct net_device *netdev)
+{
+	return -EOPNOTSUPP;
+}
+
+/**
  *  ixgbevf_update_xcast_mode - Update Multicast mode
  *  @hw: pointer to the HW structure
  *  @netdev: pointer to net device structure
@@ -513,6 +575,15 @@ static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw,
 }
 
 /**
+ * Hyper-V variant - just a stub.
+ */
+static s32 ixgbevf_hv_update_xcast_mode(struct ixgbe_hw *hw,
+					struct net_device *netdev, int xcast_mode)
+{
+	return -EOPNOTSUPP;
+}
+
+/**
  *  ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address
  *  @hw: pointer to the HW structure
  *  @vlan: 12 bit VLAN ID
@@ -551,6 +622,15 @@ mbx_err:
 }
 
 /**
+ * Hyper-V variant - just a stub.
+ */
+static s32 ixgbevf_hv_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
+				  bool vlan_on)
+{
+	return -EOPNOTSUPP;
+}
+
+/**
  *  ixgbevf_setup_mac_link_vf - Setup MAC link settings
  *  @hw: pointer to hardware structure
  *  @speed: Unused in this implementation
@@ -656,6 +736,67 @@ out:
 }
 
 /**
+ * Hyper-V variant; there is no mailbox communication.
+ */
+static s32 ixgbevf_hv_check_mac_link_vf(struct ixgbe_hw *hw,
+					ixgbe_link_speed *speed,
+					bool *link_up,
+					bool autoneg_wait_to_complete)
+{
+	struct ixgbe_mbx_info *mbx = &hw->mbx;
+	struct ixgbe_mac_info *mac = &hw->mac;
+	u32 links_reg;
+
+	/* If we were hit with a reset drop the link */
+	if (!mbx->ops.check_for_rst(hw) || !mbx->timeout)
+		mac->get_link_status = true;
+
+	if (!mac->get_link_status)
+		goto out;
+
+	/* if link status is down no point in checking to see if pf is up */
+	links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+	if (!(links_reg & IXGBE_LINKS_UP))
+		goto out;
+
+	/* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
+	 * before the link status is correct
+	 */
+	if (mac->type == ixgbe_mac_82599_vf) {
+		int i;
+
+		for (i = 0; i < 5; i++) {
+			udelay(100);
+			links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+
+			if (!(links_reg & IXGBE_LINKS_UP))
+				goto out;
+		}
+	}
+
+	switch (links_reg & IXGBE_LINKS_SPEED_82599) {
+	case IXGBE_LINKS_SPEED_10G_82599:
+		*speed = IXGBE_LINK_SPEED_10GB_FULL;
+		break;
+	case IXGBE_LINKS_SPEED_1G_82599:
+		*speed = IXGBE_LINK_SPEED_1GB_FULL;
+		break;
+	case IXGBE_LINKS_SPEED_100_82599:
+		*speed = IXGBE_LINK_SPEED_100_FULL;
+		break;
+	}
+
+	/* if we passed all the tests above then the link is up and we no
+	 * longer need to check for link
+	 */
+	mac->get_link_status = false;
+
+out:
+	*link_up = !mac->get_link_status;
+	return 0;
+}
+
+/**
  *  ixgbevf_rlpml_set_vf - Set the maximum receive packet length
  *  @hw: pointer to the HW structure
  *  @max_size: value to assign to max frame size
@@ -670,6 +811,25 @@ void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
 }
 
 /**
+ *  ixgbevf_hv_rlpml_set_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)
+{
+	u32 reg;
+
+	/* If we are on Hyper-V, we implement
+	 * this functionality differently.
+	 */
+	reg =  IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(0));
+	/* CRC == 4 */
+	reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN);
+	IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg);
+}
+
+/**
  *  ixgbevf_negotiate_api_version - Negotiate supported API version
  *  @hw: pointer to the HW structure
  *  @api: integer containing requested API version
@@ -703,6 +863,22 @@ int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
 	return err;
 }
 
+/**
+ *  ixgbevf_hv_negotiate_api_version - 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)
+{
+	/* Hyper-V only supports api version ixgbe_mbox_api_10
+	 */
+	if (api != ixgbe_mbox_api_10)
+		return IXGBE_ERR_INVALID_ARGUMENT;
+
+	return 0;
+}
+
 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
 		       unsigned int *default_tc)
 {
@@ -776,22 +952,62 @@ static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
 	.set_vfta		= ixgbevf_set_vfta_vf,
 };
 
+static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = {
+	.init_hw		= ixgbevf_init_hw_vf,
+	.reset_hw		= ixgbevf_hv_reset_hw_vf,
+	.start_hw		= ixgbevf_start_hw_vf,
+	.get_mac_addr		= ixgbevf_get_mac_addr_vf,
+	.stop_adapter		= ixgbevf_stop_hw_vf,
+	.setup_link		= ixgbevf_setup_mac_link_vf,
+	.check_link		= ixgbevf_hv_check_mac_link_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,
+};
+
 const struct ixgbevf_info ixgbevf_82599_vf_info = {
 	.mac = ixgbe_mac_82599_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
 
+const struct ixgbevf_info ixgbevf_82599_vf_hv_info = {
+	.mac = ixgbe_mac_82599_vf,
+	.mac_ops = &ixgbevf_hv_mac_ops,
+};
+
 const struct ixgbevf_info ixgbevf_X540_vf_info = {
 	.mac = ixgbe_mac_X540_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
 
+const struct ixgbevf_info ixgbevf_X540_vf_hv_info = {
+	.mac = ixgbe_mac_X540_vf,
+	.mac_ops = &ixgbevf_hv_mac_ops,
+};
+
 const struct ixgbevf_info ixgbevf_X550_vf_info = {
 	.mac = ixgbe_mac_X550_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
 
+const struct ixgbevf_info ixgbevf_X550_vf_hv_info = {
+	.mac = ixgbe_mac_X550_vf,
+	.mac_ops = &ixgbevf_hv_mac_ops,
+};
+
 const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = {
 	.mac = ixgbe_mac_X550EM_x_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
+
+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;
+}
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.h b/drivers/net/ethernet/intel/ixgbevf/vf.h
index ef9f773..658883e 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.h
@@ -208,7 +208,9 @@ 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_negotiate_api_version(struct ixgbe_hw *hw, int api);
+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);
-- 
1.7.4.1

[PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[K. Y. Srinivasan]

On Hyper-V, the VF/PF communication is a via software mediated path
as opposed to the hardware mailbox. Make the necessary
adjustments to support Hyper-V.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
	V2: Addressed most of the comments from
	    Alexander Duyck <alexander.duyck@gmail.com>
	    and Rustad, Mark D <mark.d.rustad@intel.com>.

	V3: Addressed additional comments from
	    Alexander Duyck <alexander.duyck@gmail.com>

	V4: Addressed kbuild errors reported by:
	    kbuild test robot <lkp@intel.com>

	V5: Addressed additional comments from
	    Alexander Duyck <alexander.duyck@gmail.com>

 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
 drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
 drivers/net/ethernet/intel/ixgbevf/vf.c           |  216 +++++++++++++++++++++
 drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
 5 files changed, 266 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index 5ac60ee..3296d27 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -460,9 +460,13 @@ enum ixbgevf_state_t {
 
 enum ixgbevf_boards {
 	board_82599_vf,
+	board_82599_vf_hv,
 	board_X540_vf,
+	board_X540_vf_hv,
 	board_X550_vf,
+	board_X550_vf_hv,
 	board_X550EM_x_vf,
+	board_X550EM_x_vf_hv,
 };
 
 enum ixgbevf_xcast_modes {
@@ -477,6 +481,13 @@ extern const struct ixgbevf_info ixgbevf_X550_vf_info;
 extern const struct ixgbevf_info ixgbevf_X550EM_x_vf_info;
 extern const struct ixgbe_mbx_operations ixgbevf_mbx_ops;
 
+
+extern const struct ixgbevf_info ixgbevf_82599_vf_hv_info;
+extern const struct ixgbevf_info ixgbevf_X540_vf_hv_info;
+extern const struct ixgbevf_info ixgbevf_X550_vf_hv_info;
+extern const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info;
+extern const struct ixgbe_mbx_operations ixgbevf_hv_mbx_ops;
+
 /* needed by ethtool.c */
 extern const char ixgbevf_driver_name[];
 extern const char ixgbevf_driver_version[];
@@ -494,6 +505,7 @@ 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);
 
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 007cbe0..c4bb480 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -62,10 +62,14 @@ static char ixgbevf_copyright[] =
 	"Copyright (c) 2009 - 2015 Intel Corporation.";
 
 static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
-	[board_82599_vf] = &ixgbevf_82599_vf_info,
-	[board_X540_vf]  = &ixgbevf_X540_vf_info,
-	[board_X550_vf]  = &ixgbevf_X550_vf_info,
-	[board_X550EM_x_vf] = &ixgbevf_X550EM_x_vf_info,
+	[board_82599_vf]	= &ixgbevf_82599_vf_info,
+	[board_82599_vf_hv]	= &ixgbevf_82599_vf_hv_info,
+	[board_X540_vf]		= &ixgbevf_X540_vf_info,
+	[board_X540_vf_hv]	= &ixgbevf_X540_vf_hv_info,
+	[board_X550_vf]		= &ixgbevf_X550_vf_info,
+	[board_X550_vf_hv]	= &ixgbevf_X550_vf_hv_info,
+	[board_X550EM_x_vf]	= &ixgbevf_X550EM_x_vf_info,
+	[board_X550EM_x_vf_hv]	= &ixgbevf_X550EM_x_vf_hv_info,
 };
 
 /* ixgbevf_pci_tbl - PCI Device ID Table
@@ -78,9 +82,13 @@ static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
  */
 static const struct pci_device_id ixgbevf_pci_tbl[] = {
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF), board_82599_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF_HV), board_82599_vf_hv },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540_VF), board_X540_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540_VF_HV), board_X540_vf_hv },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550_VF), board_X550_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550_VF_HV), board_X550_vf_hv },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_VF), board_X550EM_x_vf },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_VF_HV), board_X550EM_x_vf_hv},
 	/* required last entry */
 	{0, }
 };
@@ -1795,7 +1803,10 @@ 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 */
-	ixgbevf_rlpml_set_vf(hw, netdev->mtu + ETH_HLEN + ETH_FCS_LEN);
+	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);
 
 	/* Setup the HW Rx Head and Tail Descriptor Pointers and
 	 * the Base and Length of the Rx Descriptor Ring
@@ -2056,7 +2067,10 @@ static void ixgbevf_negotiate_api(struct ixgbevf_adapter *adapter)
 	spin_lock_bh(&adapter->mbx_lock);
 
 	while (api[idx] != ixgbe_mbox_api_unknown) {
-		err = ixgbevf_negotiate_api_version(hw, api[idx]);
+		if (!ixgbevf_on_hyperv(hw))
+			err = ixgbevf_negotiate_api_version(hw, api[idx]);
+		else
+			err = ixgbevf_hv_negotiate_api_version(hw, api[idx]);
 		if (!err)
 			break;
 		idx++;
@@ -3727,7 +3741,10 @@ 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 */
-	ixgbevf_rlpml_set_vf(hw, max_frame);
+	if (!ixgbevf_on_hyperv(hw))
+		ixgbevf_rlpml_set_vf(hw, max_frame);
+	else
+		ixgbevf_hv_rlpml_set_vf(hw, max_frame);
 
 	return 0;
 }
diff --git a/drivers/net/ethernet/intel/ixgbevf/mbx.c b/drivers/net/ethernet/intel/ixgbevf/mbx.c
index dc68fea..298a0da 100644
--- a/drivers/net/ethernet/intel/ixgbevf/mbx.c
+++ b/drivers/net/ethernet/intel/ixgbevf/mbx.c
@@ -346,3 +346,15 @@ const struct ixgbe_mbx_operations ixgbevf_mbx_ops = {
 	.check_for_rst	= ixgbevf_check_for_rst_vf,
 };
 
+/**
+ * Mailbox operations when running on Hyper-V.
+ * On Hyper-V, PF/VF communiction is not through the
+ * hardware mailbox; this communication is through
+ * a software mediated path.
+ * Most mail box operations are noop while running on
+ * Hyper-V.
+ */
+const struct ixgbe_mbx_operations ixgbevf_hv_mbx_ops = {
+	.init_params	= ixgbevf_init_mbx_params_vf,
+	.check_for_rst	= ixgbevf_check_for_rst_vf,
+};
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c
index 4d613a4..7208956 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.c
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.c
@@ -27,6 +27,13 @@
 #include "vf.h"
 #include "ixgbevf.h"
 
+/*
+ * On Hyper-V, to reset, we need to read from this offset
+ * from the PCI config space. This is the mechanism used on
+ * Hyper-V to support PF/VF communication.
+ */
+#define IXGBE_HV_RESET_OFFSET           0x201
+
 /**
  *  ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx
  *  @hw: pointer to hardware structure
@@ -126,6 +133,27 @@ static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
 }
 
 /**
+ * Hyper-V variant; the VF/PF communication is through the PCI
+ * config space.
+ */
+static s32 ixgbevf_hv_reset_hw_vf(struct ixgbe_hw *hw)
+{
+#if IS_ENABLED(CONFIG_PCI_MMCONFIG)
+	struct ixgbevf_adapter *adapter = hw->back;
+	int i;
+
+	for (i = 0; i < 6; i++)
+		pci_read_config_byte(adapter->pdev,
+				     (i + IXGBE_HV_RESET_OFFSET),
+				     &hw->mac.perm_addr[i]);
+	return 0;
+#else
+	pr_err("PCI_MMCONFIG needs to be enabled for Hyper-V\n");
+	return -EOPNOTSUPP;
+#endif
+}
+
+/**
  *  ixgbevf_stop_hw_vf - Generic stop Tx/Rx units
  *  @hw: pointer to hardware structure
  *
@@ -258,6 +286,11 @@ static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
 	return ret_val;
 }
 
+static s32 ixgbevf_hv_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
+{
+	return -EOPNOTSUPP;
+}
+
 /**
  * ixgbevf_get_reta_locked - get the RSS redirection table (RETA) contents.
  * @adapter: pointer to the port handle
@@ -416,6 +449,26 @@ static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
 	return ret_val;
 }
 
+/**
+ *  ixgbevf_hv_set_rar_vf - set device MAC address Hyper-V variant
+ *  @hw: pointer to hardware structure
+ *  @index: Receive address register to write
+ *  @addr: Address to put into receive address register
+ *  @vmdq: Unused in this implementation
+ *
+ * We don't really allow setting the device MAC address. However,
+ * if the address being set is the permanent MAC address we will
+ * permit that.
+ **/
+static s32 ixgbevf_hv_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
+				 u32 vmdq)
+{
+	if (ether_addr_equal(addr, hw->mac.perm_addr))
+		return 0;
+
+	return -EOPNOTSUPP;
+}
+
 static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
 				       u32 *msg, u16 size)
 {
@@ -473,6 +526,15 @@ static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw,
 }
 
 /**
+ * Hyper-V variant - just a stub.
+ */
+static s32 ixgbevf_hv_update_mc_addr_list_vf(struct ixgbe_hw *hw,
+					  struct net_device *netdev)
+{
+	return -EOPNOTSUPP;
+}
+
+/**
  *  ixgbevf_update_xcast_mode - Update Multicast mode
  *  @hw: pointer to the HW structure
  *  @netdev: pointer to net device structure
@@ -513,6 +575,15 @@ static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw,
 }
 
 /**
+ * Hyper-V variant - just a stub.
+ */
+static s32 ixgbevf_hv_update_xcast_mode(struct ixgbe_hw *hw,
+					struct net_device *netdev, int xcast_mode)
+{
+	return -EOPNOTSUPP;
+}
+
+/**
  *  ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address
  *  @hw: pointer to the HW structure
  *  @vlan: 12 bit VLAN ID
@@ -551,6 +622,15 @@ mbx_err:
 }
 
 /**
+ * Hyper-V variant - just a stub.
+ */
+static s32 ixgbevf_hv_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
+				  bool vlan_on)
+{
+	return -EOPNOTSUPP;
+}
+
+/**
  *  ixgbevf_setup_mac_link_vf - Setup MAC link settings
  *  @hw: pointer to hardware structure
  *  @speed: Unused in this implementation
@@ -656,6 +736,67 @@ out:
 }
 
 /**
+ * Hyper-V variant; there is no mailbox communication.
+ */
+static s32 ixgbevf_hv_check_mac_link_vf(struct ixgbe_hw *hw,
+					ixgbe_link_speed *speed,
+					bool *link_up,
+					bool autoneg_wait_to_complete)
+{
+	struct ixgbe_mbx_info *mbx = &hw->mbx;
+	struct ixgbe_mac_info *mac = &hw->mac;
+	u32 links_reg;
+
+	/* If we were hit with a reset drop the link */
+	if (!mbx->ops.check_for_rst(hw) || !mbx->timeout)
+		mac->get_link_status = true;
+
+	if (!mac->get_link_status)
+		goto out;
+
+	/* if link status is down no point in checking to see if pf is up */
+	links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+	if (!(links_reg & IXGBE_LINKS_UP))
+		goto out;
+
+	/* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
+	 * before the link status is correct
+	 */
+	if (mac->type == ixgbe_mac_82599_vf) {
+		int i;
+
+		for (i = 0; i < 5; i++) {
+			udelay(100);
+			links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+
+			if (!(links_reg & IXGBE_LINKS_UP))
+				goto out;
+		}
+	}
+
+	switch (links_reg & IXGBE_LINKS_SPEED_82599) {
+	case IXGBE_LINKS_SPEED_10G_82599:
+		*speed = IXGBE_LINK_SPEED_10GB_FULL;
+		break;
+	case IXGBE_LINKS_SPEED_1G_82599:
+		*speed = IXGBE_LINK_SPEED_1GB_FULL;
+		break;
+	case IXGBE_LINKS_SPEED_100_82599:
+		*speed = IXGBE_LINK_SPEED_100_FULL;
+		break;
+	}
+
+	/* if we passed all the tests above then the link is up and we no
+	 * longer need to check for link
+	 */
+	mac->get_link_status = false;
+
+out:
+	*link_up = !mac->get_link_status;
+	return 0;
+}
+
+/**
  *  ixgbevf_rlpml_set_vf - Set the maximum receive packet length
  *  @hw: pointer to the HW structure
  *  @max_size: value to assign to max frame size
@@ -670,6 +811,25 @@ void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
 }
 
 /**
+ *  ixgbevf_hv_rlpml_set_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)
+{
+	u32 reg;
+
+	/* If we are on Hyper-V, we implement
+	 * this functionality differently.
+	 */
+	reg =  IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(0));
+	/* CRC == 4 */
+	reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN);
+	IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg);
+}
+
+/**
  *  ixgbevf_negotiate_api_version - Negotiate supported API version
  *  @hw: pointer to the HW structure
  *  @api: integer containing requested API version
@@ -703,6 +863,22 @@ int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
 	return err;
 }
 
+/**
+ *  ixgbevf_hv_negotiate_api_version - 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)
+{
+	/* Hyper-V only supports api version ixgbe_mbox_api_10
+	 */
+	if (api != ixgbe_mbox_api_10)
+		return IXGBE_ERR_INVALID_ARGUMENT;
+
+	return 0;
+}
+
 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
 		       unsigned int *default_tc)
 {
@@ -776,22 +952,62 @@ static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
 	.set_vfta		= ixgbevf_set_vfta_vf,
 };
 
+static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = {
+	.init_hw		= ixgbevf_init_hw_vf,
+	.reset_hw		= ixgbevf_hv_reset_hw_vf,
+	.start_hw		= ixgbevf_start_hw_vf,
+	.get_mac_addr		= ixgbevf_get_mac_addr_vf,
+	.stop_adapter		= ixgbevf_stop_hw_vf,
+	.setup_link		= ixgbevf_setup_mac_link_vf,
+	.check_link		= ixgbevf_hv_check_mac_link_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,
+};
+
 const struct ixgbevf_info ixgbevf_82599_vf_info = {
 	.mac = ixgbe_mac_82599_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
 
+const struct ixgbevf_info ixgbevf_82599_vf_hv_info = {
+	.mac = ixgbe_mac_82599_vf,
+	.mac_ops = &ixgbevf_hv_mac_ops,
+};
+
 const struct ixgbevf_info ixgbevf_X540_vf_info = {
 	.mac = ixgbe_mac_X540_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
 
+const struct ixgbevf_info ixgbevf_X540_vf_hv_info = {
+	.mac = ixgbe_mac_X540_vf,
+	.mac_ops = &ixgbevf_hv_mac_ops,
+};
+
 const struct ixgbevf_info ixgbevf_X550_vf_info = {
 	.mac = ixgbe_mac_X550_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
 
+const struct ixgbevf_info ixgbevf_X550_vf_hv_info = {
+	.mac = ixgbe_mac_X550_vf,
+	.mac_ops = &ixgbevf_hv_mac_ops,
+};
+
 const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = {
 	.mac = ixgbe_mac_X550EM_x_vf,
 	.mac_ops = &ixgbevf_mac_ops,
 };
+
+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;
+}
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.h b/drivers/net/ethernet/intel/ixgbevf/vf.h
index ef9f773..658883e 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.h
@@ -208,7 +208,9 @@ 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_negotiate_api_version(struct ixgbe_hw *hw, int api);
+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);
-- 
1.7.4.1

[Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[Jeff Kirsher]

On Tue, 2016-04-19 at 19:17 -0700, K. Y. Srinivasan wrote:
> On Hyper-V, the VF/PF communication is a via software mediated path
> as opposed to the hardware mailbox. Make the necessary
> adjustments to support Hyper-V.
> 
> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> ---
> ????????V2: Addressed most of the comments from
> ??????????? Alexander Duyck <alexander.duyck@gmail.com>
> ??????????? and Rustad, Mark D <mark.d.rustad@intel.com>.
> 
> ????????V3: Addressed additional comments from
> ??????????? Alexander Duyck <alexander.duyck@gmail.com>
> 
> ????????V4: Addressed kbuild errors reported by:
> ??????????? kbuild test robot <lkp@intel.com>
> 
> ????????V5: Addressed additional comments from
> ??????????? Alexander Duyck <alexander.duyck@gmail.com>

First I commend you on actually making a proper changelog for a patch.
?The only issue I have is that the changelog provides not actual
changes. ?Saying you reacted to comments does not summarize what the
actual changes were. ?I purposely did not review the earlier versions
because by the time I went to do a review, there was another version
already submitted. ?So your changelog requires that users look at all
the previous emails to actually see what Alex and Mark requested in
changes.

I am telling you this for future patches, it will not impact these
patches, just really disappointing. ?I will take the extra time to
track down all the previous emails and the changes requested to ensure
you made all the changes that were requested of you. :-( ?This will
just delay when I apply the patches for testing.

> 
> ?drivers/net/ethernet/intel/ixgbevf/ixgbevf.h????? |?? 12 ++
> ?drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |?? 31 +++-
> ?drivers/net/ethernet/intel/ixgbevf/mbx.c????????? |?? 12 ++
> ?drivers/net/ethernet/intel/ixgbevf/vf.c?????????? |? 216
> +++++++++++++++++++++
> ?drivers/net/ethernet/intel/ixgbevf/vf.h?????????? |??? 2 +
> ?5 files changed, 266 insertions(+), 7 deletions(-)
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Re: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[Jeff Kirsher]

[-- Attachment #1: Type: text/plain, Size: 2169 bytes --]

On Tue, 2016-04-19 at 19:17 -0700, K. Y. Srinivasan wrote:
> On Hyper-V, the VF/PF communication is a via software mediated path
> as opposed to the hardware mailbox. Make the necessary
> adjustments to support Hyper-V.
> 
> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> ---
>         V2: Addressed most of the comments from
>             Alexander Duyck <alexander.duyck@gmail.com>
>             and Rustad, Mark D <mark.d.rustad@intel.com>.
> 
>         V3: Addressed additional comments from
>             Alexander Duyck <alexander.duyck@gmail.com>
> 
>         V4: Addressed kbuild errors reported by:
>             kbuild test robot <lkp@intel.com>
> 
>         V5: Addressed additional comments from
>             Alexander Duyck <alexander.duyck@gmail.com>

First I commend you on actually making a proper changelog for a patch.
 The only issue I have is that the changelog provides not actual
changes.  Saying you reacted to comments does not summarize what the
actual changes were.  I purposely did not review the earlier versions
because by the time I went to do a review, there was another version
already submitted.  So your changelog requires that users look at all
the previous emails to actually see what Alex and Mark requested in
changes.

I am telling you this for future patches, it will not impact these
patches, just really disappointing.  I will take the extra time to
track down all the previous emails and the changes requested to ensure
you made all the changes that were requested of you. :-(  This will
just delay when I apply the patches for testing.

> 
>  drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
>  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
>  drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
>  drivers/net/ethernet/intel/ixgbevf/vf.c           |  216
> +++++++++++++++++++++
>  drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
>  5 files changed, 266 insertions(+), 7 deletions(-)

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[Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[KY Srinivasan]

> -----Original Message-----
> From: Jeff Kirsher [mailto:jeffrey.t.kirsher at intel.com]
> Sent: Tuesday, April 19, 2016 11:25 PM
> To: KY Srinivasan <kys@microsoft.com>; davem at davemloft.net;
> netdev at vger.kernel.org; linux-kernel at vger.kernel.org;
> devel at linuxdriverproject.org; olaf at aepfle.de; apw at canonical.com;
> jasowang at redhat.com; eli at mellanox.com; jackm at mellanox.com;
> yevgenyp at mellanox.com; john.ronciak at intel.com; intel-wired-
> lan at lists.osuosl.org; alexander.duyck at gmail.com
> Subject: Re: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support
> Windows hosts (Hyper-V)
> 
> On Tue, 2016-04-19 at 19:17 -0700, K. Y. Srinivasan wrote:
> > On Hyper-V, the VF/PF communication is a via software mediated path
> > as opposed to the hardware mailbox. Make the necessary
> > adjustments to support Hyper-V.
> >
> > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> > ---
> > ????????V2: Addressed most of the comments from
> > ??????????? Alexander Duyck <alexander.duyck@gmail.com>
> > ??????????? and Rustad, Mark D <mark.d.rustad@intel.com>.
> >
> > ????????V3: Addressed additional comments from
> > ??????????? Alexander Duyck <alexander.duyck@gmail.com>
> >
> > ????????V4: Addressed kbuild errors reported by:
> > ??????????? kbuild test robot <lkp@intel.com>
> >
> > ????????V5: Addressed additional comments from
> > ??????????? Alexander Duyck <alexander.duyck@gmail.com>
> 
> First I commend you on actually making a proper changelog for a patch.
> ?The only issue I have is that the changelog provides not actual
> changes. ?Saying you reacted to comments does not summarize what the
> actual changes were. ?I purposely did not review the earlier versions
> because by the time I went to do a review, there was another version
> already submitted. ?So your changelog requires that users look at all
> the previous emails to actually see what Alex and Mark requested in
> changes.
> 
> I am telling you this for future patches, it will not impact these
> patches, just really disappointing. ?I will take the extra time to
> track down all the previous emails and the changes requested to ensure
> you made all the changes that were requested of you. :-( ?This will
> just delay when I apply the patches for testing.

Thank you for taking the time. Here is a brief summary of all the changes (from
the initial version - ignoring cosmetic changes):

1. Changed the check for running on Hyper-V to be instruction set 
architecture independent. This is now based on device IDs (since we have
unique device IDs when running on Hyper-V).

2. Introduced a bunch of stub functions to eliminate a bunch of checks I initially
had in ixgbev_main.c. I now fully populate the mac operations many of the entry
points being stubs (ixgbevf_hv_mac_ops).

3. Added a check to ensure that we return appropriate error if  PCI_MMCONFIG
Is not defined - on Hyper-V we get the mac address by reading the PCI config space
at special offset.

4. Made the following functions standalone functions:
 ixgbevf_hv_rlpml_set_vf() and
ixgbevf_negotiate_api_version()
These are the Hyper-V variants. We now have the check at the call sites
in ixgbevf_main.c.

Hope this helps and again I am sorry for not including the summary.

Regards,

K. Y
> 
> >
> > ?drivers/net/ethernet/intel/ixgbevf/ixgbevf.h????? |?? 12 ++
> > ?drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |?? 31 +++-
> > ?drivers/net/ethernet/intel/ixgbevf/mbx.c????????? |?? 12 ++
> > ?drivers/net/ethernet/intel/ixgbevf/vf.c?????????? |? 216
> > +++++++++++++++++++++
> > ?drivers/net/ethernet/intel/ixgbevf/vf.h?????????? |??? 2 +
> > ?5 files changed, 266 insertions(+), 7 deletions(-)

RE: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[KY Srinivasan]

> -----Original Message-----
> From: Jeff Kirsher [mailto:jeffrey.t.kirsher@intel.com]
> Sent: Tuesday, April 19, 2016 11:25 PM
> To: KY Srinivasan <kys@microsoft.com>; davem@davemloft.net;
> netdev@vger.kernel.org; linux-kernel@vger.kernel.org;
> devel@linuxdriverproject.org; olaf@aepfle.de; apw@canonical.com;
> jasowang@redhat.com; eli@mellanox.com; jackm@mellanox.com;
> yevgenyp@mellanox.com; john.ronciak@intel.com; intel-wired-
> lan@lists.osuosl.org; alexander.duyck@gmail.com
> Subject: Re: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support
> Windows hosts (Hyper-V)
> 
> On Tue, 2016-04-19 at 19:17 -0700, K. Y. Srinivasan wrote:
> > On Hyper-V, the VF/PF communication is a via software mediated path
> > as opposed to the hardware mailbox. Make the necessary
> > adjustments to support Hyper-V.
> >
> > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> > ---
> >         V2: Addressed most of the comments from
> >             Alexander Duyck <alexander.duyck@gmail.com>
> >             and Rustad, Mark D <mark.d.rustad@intel.com>.
> >
> >         V3: Addressed additional comments from
> >             Alexander Duyck <alexander.duyck@gmail.com>
> >
> >         V4: Addressed kbuild errors reported by:
> >             kbuild test robot <lkp@intel.com>
> >
> >         V5: Addressed additional comments from
> >             Alexander Duyck <alexander.duyck@gmail.com>
> 
> First I commend you on actually making a proper changelog for a patch.
>  The only issue I have is that the changelog provides not actual
> changes.  Saying you reacted to comments does not summarize what the
> actual changes were.  I purposely did not review the earlier versions
> because by the time I went to do a review, there was another version
> already submitted.  So your changelog requires that users look at all
> the previous emails to actually see what Alex and Mark requested in
> changes.
> 
> I am telling you this for future patches, it will not impact these
> patches, just really disappointing.  I will take the extra time to
> track down all the previous emails and the changes requested to ensure
> you made all the changes that were requested of you. :-(  This will
> just delay when I apply the patches for testing.

Thank you for taking the time. Here is a brief summary of all the changes (from
the initial version - ignoring cosmetic changes):

1. Changed the check for running on Hyper-V to be instruction set 
architecture independent. This is now based on device IDs (since we have
unique device IDs when running on Hyper-V).

2. Introduced a bunch of stub functions to eliminate a bunch of checks I initially
had in ixgbev_main.c. I now fully populate the mac operations many of the entry
points being stubs (ixgbevf_hv_mac_ops).

3. Added a check to ensure that we return appropriate error if  PCI_MMCONFIG
Is not defined - on Hyper-V we get the mac address by reading the PCI config space
at special offset.

4. Made the following functions standalone functions:
 ixgbevf_hv_rlpml_set_vf() and
ixgbevf_negotiate_api_version()
These are the Hyper-V variants. We now have the check at the call sites
in ixgbevf_main.c.

Hope this helps and again I am sorry for not including the summary.

Regards,

K. Y
> 
> >
> >  drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
> >  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
> >  drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
> >  drivers/net/ethernet/intel/ixgbevf/vf.c           |  216
> > +++++++++++++++++++++
> >  drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
> >  5 files changed, 266 insertions(+), 7 deletions(-)

[Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[Bowers, AndrewX]

> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org] On
> Behalf Of K. Y. Srinivasan
> Sent: Tuesday, April 19, 2016 7:18 PM
> To: davem at davemloft.net; netdev at vger.kernel.org; linux-
> kernel at vger.kernel.org; devel at linuxdriverproject.org; olaf at aepfle.de;
> apw at canonical.com; jasowang at redhat.com; eli at mellanox.com;
> jackm at mellanox.com; yevgenyp at mellanox.com; Ronciak, John
> <john.ronciak@intel.com>; intel-wired-lan at lists.osuosl.org;
> alexander.duyck at gmail.com
> Subject: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support
> Windows hosts (Hyper-V)
> 
> On Hyper-V, the VF/PF communication is a via software mediated path as
> opposed to the hardware mailbox. Make the necessary adjustments to
> support Hyper-V.
> 
> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> ---
> 	V2: Addressed most of the comments from
> 	    Alexander Duyck <alexander.duyck@gmail.com>
> 	    and Rustad, Mark D <mark.d.rustad@intel.com>.
> 
> 	V3: Addressed additional comments from
> 	    Alexander Duyck <alexander.duyck@gmail.com>
> 
> 	V4: Addressed kbuild errors reported by:
> 	    kbuild test robot <lkp@intel.com>
> 
> 	V5: Addressed additional comments from
> 	    Alexander Duyck <alexander.duyck@gmail.com>
> 
>  drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
>  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
>  drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
>  drivers/net/ethernet/intel/ixgbevf/vf.c           |  216
> +++++++++++++++++++++
>  drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
>  5 files changed, 266 insertions(+), 7 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
VF driver correctly builds and changes correctly applied.

[Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[KY Srinivasan]

> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org] On
> Behalf Of Bowers, AndrewX
> Sent: Friday, April 22, 2016 12:32 PM
> To: intel-wired-lan at lists.osuosl.org
> Subject: Re: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support
> Windows hosts (Hyper-V)
> 
> > -----Original Message-----
> > From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org] On
> > Behalf Of K. Y. Srinivasan
> > Sent: Tuesday, April 19, 2016 7:18 PM
> > To: davem at davemloft.net; netdev at vger.kernel.org; linux-
> > kernel at vger.kernel.org; devel at linuxdriverproject.org; olaf at aepfle.de;
> > apw at canonical.com; jasowang at redhat.com; eli at mellanox.com;
> > jackm at mellanox.com; yevgenyp at mellanox.com; Ronciak, John
> > <john.ronciak@intel.com>; intel-wired-lan at lists.osuosl.org;
> > alexander.duyck at gmail.com
> > Subject: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support
> > Windows hosts (Hyper-V)
> >
> > On Hyper-V, the VF/PF communication is a via software mediated path as
> > opposed to the hardware mailbox. Make the necessary adjustments to
> > support Hyper-V.
> >
> > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> > ---
> > 	V2: Addressed most of the comments from
> > 	    Alexander Duyck <alexander.duyck@gmail.com>
> > 	    and Rustad, Mark D <mark.d.rustad@intel.com>.
> >
> > 	V3: Addressed additional comments from
> > 	    Alexander Duyck <alexander.duyck@gmail.com>
> >
> > 	V4: Addressed kbuild errors reported by:
> > 	    kbuild test robot <lkp@intel.com>
> >
> > 	V5: Addressed additional comments from
> > 	    Alexander Duyck <alexander.duyck@gmail.com>
> >
> >  drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
> >  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
> >  drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
> >  drivers/net/ethernet/intel/ixgbevf/vf.c           |  216
> > +++++++++++++++++++++
> >  drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
> >  5 files changed, 266 insertions(+), 7 deletions(-)
> 
> Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
> VF driver correctly builds and changes correctly applied.

Andrew,

This is the first time I am submitting a patch to Intel. What is involved in getting this into David Miller's tree.
Should I submit these to net-next?

K. Y
> _______________________________________________
> Intel-wired-lan mailing list
> Intel-wired-lan at lists.osuosl.org
> https://na01.safelinks.protection.outlook.com/?url=http%3a%2f%2flists.osu
> osl.org%2fmailman%2flistinfo%2fintel-wired-
> lan&data=01%7c01%7ckys%40microsoft.com%7c7d63df5a7fa44a1adb7108d3
> 6ae4ceea%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=GrSw%2fY6G
> qTRkotjWVIdXpG2fMrL5wp4zI2rmXJMhf%2fQ%3d

[Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[Alexander Duyck]

On Wed, Apr 27, 2016 at 11:33 AM, KY Srinivasan <kys@microsoft.com> wrote:
>
>
>> -----Original Message-----
>> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org] On
>> Behalf Of Bowers, AndrewX
>> Sent: Friday, April 22, 2016 12:32 PM
>> To: intel-wired-lan at lists.osuosl.org
>> Subject: Re: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support
>> Windows hosts (Hyper-V)
>>
>> > -----Original Message-----
>> > From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org] On
>> > Behalf Of K. Y. Srinivasan
>> > Sent: Tuesday, April 19, 2016 7:18 PM
>> > To: davem at davemloft.net; netdev at vger.kernel.org; linux-
>> > kernel at vger.kernel.org; devel at linuxdriverproject.org; olaf at aepfle.de;
>> > apw at canonical.com; jasowang at redhat.com; eli at mellanox.com;
>> > jackm at mellanox.com; yevgenyp at mellanox.com; Ronciak, John
>> > <john.ronciak@intel.com>; intel-wired-lan at lists.osuosl.org;
>> > alexander.duyck at gmail.com
>> > Subject: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support
>> > Windows hosts (Hyper-V)
>> >
>> > On Hyper-V, the VF/PF communication is a via software mediated path as
>> > opposed to the hardware mailbox. Make the necessary adjustments to
>> > support Hyper-V.
>> >
>> > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
>> > ---
>> >     V2: Addressed most of the comments from
>> >         Alexander Duyck <alexander.duyck@gmail.com>
>> >         and Rustad, Mark D <mark.d.rustad@intel.com>.
>> >
>> >     V3: Addressed additional comments from
>> >         Alexander Duyck <alexander.duyck@gmail.com>
>> >
>> >     V4: Addressed kbuild errors reported by:
>> >         kbuild test robot <lkp@intel.com>
>> >
>> >     V5: Addressed additional comments from
>> >         Alexander Duyck <alexander.duyck@gmail.com>
>> >
>> >  drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
>> >  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
>> >  drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
>> >  drivers/net/ethernet/intel/ixgbevf/vf.c           |  216
>> > +++++++++++++++++++++
>> >  drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
>> >  5 files changed, 266 insertions(+), 7 deletions(-)
>>
>> Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
>> VF driver correctly builds and changes correctly applied.
>
> Andrew,
>
> This is the first time I am submitting a patch to Intel. What is involved in getting this into David Miller's tree.
> Should I submit these to net-next?
>
> K. Y

You just need to give them some time.  Jeff Kirsher will submit it
from his tree to Dave Miller in a few weeks.  You just need to keep an
eye on his queue at:
https://git.kernel.org/cgit/linux/kernel/git/jkirsher/next-queue.git/log/?h=dev-queue

They pull them off about 8 to 12 at time and submit them to Dave so
that he can pull them into net-next.

- Alex

[Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support Windows hosts (Hyper-V)

[KY Srinivasan]

> -----Original Message-----
> From: Alexander Duyck [mailto:alexander.duyck at gmail.com]
> Sent: Wednesday, April 27, 2016 1:51 PM
> To: KY Srinivasan <kys@microsoft.com>; Jeff Kirsher
> <jeffrey.t.kirsher@intel.com>
> Cc: Bowers, AndrewX <andrewx.bowers@intel.com>; intel-wired-
> lan at lists.osuosl.org
> Subject: Re: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf: Support
> Windows hosts (Hyper-V)
> 
> On Wed, Apr 27, 2016 at 11:33 AM, KY Srinivasan <kys@microsoft.com>
> wrote:
> >
> >
> >> -----Original Message-----
> >> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org]
> On
> >> Behalf Of Bowers, AndrewX
> >> Sent: Friday, April 22, 2016 12:32 PM
> >> To: intel-wired-lan at lists.osuosl.org
> >> Subject: Re: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf:
> Support
> >> Windows hosts (Hyper-V)
> >>
> >> > -----Original Message-----
> >> > From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org]
> On
> >> > Behalf Of K. Y. Srinivasan
> >> > Sent: Tuesday, April 19, 2016 7:18 PM
> >> > To: davem at davemloft.net; netdev at vger.kernel.org; linux-
> >> > kernel at vger.kernel.org; devel at linuxdriverproject.org; olaf at aepfle.de;
> >> > apw at canonical.com; jasowang at redhat.com; eli at mellanox.com;
> >> > jackm at mellanox.com; yevgenyp at mellanox.com; Ronciak, John
> >> > <john.ronciak@intel.com>; intel-wired-lan at lists.osuosl.org;
> >> > alexander.duyck at gmail.com
> >> > Subject: [Intel-wired-lan] [PATCH net-next V5 2/2] intel: ixgbevf:
> Support
> >> > Windows hosts (Hyper-V)
> >> >
> >> > On Hyper-V, the VF/PF communication is a via software mediated path
> as
> >> > opposed to the hardware mailbox. Make the necessary adjustments to
> >> > support Hyper-V.
> >> >
> >> > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> >> > ---
> >> >     V2: Addressed most of the comments from
> >> >         Alexander Duyck <alexander.duyck@gmail.com>
> >> >         and Rustad, Mark D <mark.d.rustad@intel.com>.
> >> >
> >> >     V3: Addressed additional comments from
> >> >         Alexander Duyck <alexander.duyck@gmail.com>
> >> >
> >> >     V4: Addressed kbuild errors reported by:
> >> >         kbuild test robot <lkp@intel.com>
> >> >
> >> >     V5: Addressed additional comments from
> >> >         Alexander Duyck <alexander.duyck@gmail.com>
> >> >
> >> >  drivers/net/ethernet/intel/ixgbevf/ixgbevf.h      |   12 ++
> >> >  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   31 +++-
> >> >  drivers/net/ethernet/intel/ixgbevf/mbx.c          |   12 ++
> >> >  drivers/net/ethernet/intel/ixgbevf/vf.c           |  216
> >> > +++++++++++++++++++++
> >> >  drivers/net/ethernet/intel/ixgbevf/vf.h           |    2 +
> >> >  5 files changed, 266 insertions(+), 7 deletions(-)
> >>
> >> Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
> >> VF driver correctly builds and changes correctly applied.
> >
> > Andrew,
> >
> > This is the first time I am submitting a patch to Intel. What is involved in
> getting this into David Miller's tree.
> > Should I submit these to net-next?
> >
> > K. Y
> 
> You just need to give them some time.  Jeff Kirsher will submit it
> from his tree to Dave Miller in a few weeks.  You just need to keep an
> eye on his queue at:
> https://na01.safelinks.protection.outlook.com/?url=https%3a%2f%2fgit.kern
> el.org%2fcgit%2flinux%2fkernel%2fgit%2fjkirsher%2fnext-
> queue.git%2flog%2f%3fh%3ddev-
> queue&data=01%7c01%7ckys%40microsoft.com%7cdd80981188ba475aeaf90
> 8d36edd933e%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=i%2bVDU
> QghJmQO8DaubIHLSSkHg4fsoWzqA%2bhyD0LytD4%3d
> 
> They pull them off about 8 to 12 at time and submit them to Dave so
> that he can pull them into net-next.

Thanks Alex.

K. Y
> 
> - Alex

[Intel-wired-lan] [PATCH net-next V5 1/2] ethernet: intel: Add the device ID's presented while running on Hyper-V

[Bowers, AndrewX]

> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org] On
> Behalf Of K. Y. Srinivasan
> Sent: Tuesday, April 19, 2016 7:18 PM
> To: davem at davemloft.net; netdev at vger.kernel.org; linux-
> kernel at vger.kernel.org; devel at linuxdriverproject.org; olaf at aepfle.de;
> apw at canonical.com; jasowang at redhat.com; eli at mellanox.com;
> jackm at mellanox.com; yevgenyp at mellanox.com; Ronciak, John
> <john.ronciak@intel.com>; intel-wired-lan at lists.osuosl.org;
> alexander.duyck at gmail.com
> Subject: [Intel-wired-lan] [PATCH net-next V5 1/2] ethernet: intel: Add the
> device ID's presented while running on Hyper-V
> 
> Intel SR-IOV cards present different ID when running on Hyper-V.
> Add the device IDs presented while running on Hyper-V.
> 
> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> ---
> 	V5: No change from V1
> 
>  drivers/net/ethernet/intel/ixgbevf/defines.h |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
New device IDs present