Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next

Jeff Kirsher says:

====================
This series contains updates to ixgbe only.  Only change to this series
is I dropped the "ixgbe: Add support for pipeline reset" due to
change requested by Martin Josefsson.

Alexander Duyck (7):
  ixgbe: Add support for IPv6 and UDP to ixgbe_get_headlen
  ixgbe: Add support for tracking the default user priority to SR-IOV
  ixgbe: Add support for GET_QUEUES message to get DCB configuration
  ixgbe: Enable support for VF API version 1.1 in the PF.
  ixgbevf: Add VF DCB + SR-IOV support
  ixgbe: Drop unnecessary addition from ixgbe_set_rx_buffer_len
  ixgbe: Fix possible memory leak in ixgbe_set_ringparam

Don Skidmore (1):
  ixgbe: Add function ixgbe_reset_pipeline_82599

Emil Tantilov (1):
  ixgbe: add WOL support for new subdevice id

Jacob Keller (1):
  ixgbe: (PTP) refactor init, cyclecounter and reset

Tushar Dave (1):
  ixgbe: Correcting small packet padding

Wei Yongjun (1):
  ixgbe: using is_zero_ether_addr() to simplify the code
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/ixgbe/ixgbe.h

@@ -483,7 +483,7 @@ struct ixgbe_adapter {
 #define IXGBE_FLAG2_FDIR_REQUIRES_REINIT        (u32)(1 << 7)
 #define IXGBE_FLAG2_RSS_FIELD_IPV4_UDP		(u32)(1 << 8)
 #define IXGBE_FLAG2_RSS_FIELD_IPV6_UDP		(u32)(1 << 9)
-#define IXGBE_FLAG2_OVERFLOW_CHECK_ENABLED	(u32)(1 << 10)
+#define IXGBE_FLAG2_PTP_ENABLED			(u32)(1 << 10)
 #define IXGBE_FLAG2_PTP_PPS_ENABLED		(u32)(1 << 11)
 
 	/* Tx fast path data */
@@ -581,7 +581,6 @@ struct ixgbe_adapter {
 	struct timecounter tc;
 	int rx_hwtstamp_filter;
 	u32 base_incval;
-	u32 cycle_speed;
 #endif /* CONFIG_IXGBE_PTP */
 
 	/* SR-IOV */
@@ -601,6 +600,8 @@ struct ixgbe_adapter {
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *ixgbe_dbg_adapter;
 #endif /*CONFIG_DEBUG_FS*/
+
+	u8 default_up;
 };
 
 struct ixgbe_fdir_filter {
@@ -752,6 +753,7 @@ extern void ixgbe_ptp_rx_hwtstamp(struct ixgbe_q_vector *q_vector,
 extern int ixgbe_ptp_hwtstamp_ioctl(struct ixgbe_adapter *adapter,
 				    struct ifreq *ifr, int cmd);
 extern void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter);
+extern void ixgbe_ptp_reset(struct ixgbe_adapter *adapter);
 extern void ixgbe_ptp_check_pps_event(struct ixgbe_adapter *adapter, u32 eicr);
 #endif /* CONFIG_IXGBE_PTP */
 

drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c

@@ -2080,6 +2080,50 @@ static s32 ixgbe_read_eeprom_82599(struct ixgbe_hw *hw,
 	return ret_val;
 }
 
+/**
+ * ixgbe_reset_pipeline_82599 - perform pipeline reset
+ *
+ * @hw: pointer to hardware structure
+ *
+ * Reset pipeline by asserting Restart_AN together with LMS change to ensure
+ * full pipeline reset.  Note - We must hold the SW/FW semaphore before writing
+ * to AUTOC, so this function assumes the semaphore is held.
+ **/
+s32 ixgbe_reset_pipeline_82599(struct ixgbe_hw *hw)
+{
+	s32 i, autoc_reg, ret_val;
+	s32 anlp1_reg = 0;
+
+	autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
+	autoc_reg |= IXGBE_AUTOC_AN_RESTART;
+
+	/* Write AUTOC register with toggled LMS[2] bit and Restart_AN */
+	IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg ^ IXGBE_AUTOC_LMS_1G_AN);
+
+	/* Wait for AN to leave state 0 */
+	for (i = 0; i < 10; i++) {
+		usleep_range(4000, 8000);
+		anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
+		if (anlp1_reg & IXGBE_ANLP1_AN_STATE_MASK)
+			break;
+	}
+
+	if (!(anlp1_reg & IXGBE_ANLP1_AN_STATE_MASK)) {
+		hw_dbg(hw, "auto negotiation not completed\n");
+		ret_val = IXGBE_ERR_RESET_FAILED;
+		goto reset_pipeline_out;
+	}
+
+	ret_val = 0;
+
+reset_pipeline_out:
+	/* Write AUTOC register with original LMS field and Restart_AN */
+	IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
+	IXGBE_WRITE_FLUSH(hw);
+
+	return ret_val;
+}
+
 static struct ixgbe_mac_operations mac_ops_82599 = {
 	.init_hw                = &ixgbe_init_hw_generic,
 	.reset_hw               = &ixgbe_reset_hw_82599,

drivers/net/ethernet/intel/ixgbe/ixgbe_common.c

@@ -1778,8 +1778,7 @@ s32 ixgbe_validate_mac_addr(u8 *mac_addr)
 	else if (IXGBE_IS_BROADCAST(mac_addr))
 		status = IXGBE_ERR_INVALID_MAC_ADDR;
 	/* Reject the zero address */
-	else if (mac_addr[0] == 0 && mac_addr[1] == 0 && mac_addr[2] == 0 &&
-	         mac_addr[3] == 0 && mac_addr[4] == 0 && mac_addr[5] == 0)
+	else if (is_zero_ether_addr(mac_addr))
 		status = IXGBE_ERR_INVALID_MAC_ADDR;
 
 	return status;

drivers/net/ethernet/intel/ixgbe/ixgbe_common.h

@@ -107,6 +107,7 @@ void ixgbe_clear_tx_pending(struct ixgbe_hw *hw);
 
 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw, int num_pb,
 			     u32 headroom, int strategy);
+s32 ixgbe_reset_pipeline_82599(struct ixgbe_hw *hw);
 
 #define IXGBE_I2C_THERMAL_SENSOR_ADDR	0xF8
 #define IXGBE_EMC_INTERNAL_DATA		0x00

drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c

@@ -887,24 +887,23 @@ static int ixgbe_set_ringparam(struct net_device *netdev,
                                struct ethtool_ringparam *ring)
 {
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
-	struct ixgbe_ring *temp_tx_ring, *temp_rx_ring;
+	struct ixgbe_ring *temp_ring;
 	int i, err = 0;
 	u32 new_rx_count, new_tx_count;
-	bool need_update = false;
 
 	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 		return -EINVAL;
 
-	new_rx_count = max_t(u32, ring->rx_pending, IXGBE_MIN_RXD);
-	new_rx_count = min_t(u32, new_rx_count, IXGBE_MAX_RXD);
-	new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);
-
-	new_tx_count = max_t(u32, ring->tx_pending, IXGBE_MIN_TXD);
-	new_tx_count = min_t(u32, new_tx_count, IXGBE_MAX_TXD);
+	new_tx_count = clamp_t(u32, ring->tx_pending,
+			       IXGBE_MIN_TXD, IXGBE_MAX_TXD);
 	new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);
 
-	if ((new_tx_count == adapter->tx_ring[0]->count) &&
-	    (new_rx_count == adapter->rx_ring[0]->count)) {
+	new_rx_count = clamp_t(u32, ring->rx_pending,
+			       IXGBE_MIN_RXD, IXGBE_MAX_RXD);
+	new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);
+
+	if ((new_tx_count == adapter->tx_ring_count) &&
+	    (new_rx_count == adapter->rx_ring_count)) {
 		/* nothing to do */
 		return 0;
 	}
@@ -922,81 +921,80 @@ static int ixgbe_set_ringparam(struct net_device *netdev,
 		goto clear_reset;
 	}
 
-	temp_tx_ring = vmalloc(adapter->num_tx_queues * sizeof(struct ixgbe_ring));
-	if (!temp_tx_ring) {
+	/* allocate temporary buffer to store rings in */
+	i = max_t(int, adapter->num_tx_queues, adapter->num_rx_queues);
+	temp_ring = vmalloc(i * sizeof(struct ixgbe_ring));
+
+	if (!temp_ring) {
 		err = -ENOMEM;
 		goto clear_reset;
 	}
 
+	ixgbe_down(adapter);
+
+	/*
+	 * Setup new Tx resources and free the old Tx resources in that order.
+	 * We can then assign the new resources to the rings via a memcpy.
+	 * The advantage to this approach is that we are guaranteed to still
+	 * have resources even in the case of an allocation failure.
+	 */
 	if (new_tx_count != adapter->tx_ring_count) {
 		for (i = 0; i < adapter->num_tx_queues; i++) {
-			memcpy(&temp_tx_ring[i], adapter->tx_ring[i],
+			memcpy(&temp_ring[i], adapter->tx_ring[i],
 			       sizeof(struct ixgbe_ring));
-			temp_tx_ring[i].count = new_tx_count;
-			err = ixgbe_setup_tx_resources(&temp_tx_ring[i]);
+
+			temp_ring[i].count = new_tx_count;
+			err = ixgbe_setup_tx_resources(&temp_ring[i]);
 			if (err) {
 				while (i) {
 					i--;
-					ixgbe_free_tx_resources(&temp_tx_ring[i]);
+					ixgbe_free_tx_resources(&temp_ring[i]);
 				}
-				goto clear_reset;
+				goto err_setup;
 			}
 		}
-		need_update = true;
-	}
 
-	temp_rx_ring = vmalloc(adapter->num_rx_queues * sizeof(struct ixgbe_ring));
-	if (!temp_rx_ring) {
-		err = -ENOMEM;
-		goto err_setup;
+		for (i = 0; i < adapter->num_tx_queues; i++) {
+			ixgbe_free_tx_resources(adapter->tx_ring[i]);
+
+			memcpy(adapter->tx_ring[i], &temp_ring[i],
+			       sizeof(struct ixgbe_ring));
+		}
+
+		adapter->tx_ring_count = new_tx_count;
 	}
 
+	/* Repeat the process for the Rx rings if needed */
 	if (new_rx_count != adapter->rx_ring_count) {
 		for (i = 0; i < adapter->num_rx_queues; i++) {
-			memcpy(&temp_rx_ring[i], adapter->rx_ring[i],
+			memcpy(&temp_ring[i], adapter->rx_ring[i],
 			       sizeof(struct ixgbe_ring));
-			temp_rx_ring[i].count = new_rx_count;
-			err = ixgbe_setup_rx_resources(&temp_rx_ring[i]);
+
+			temp_ring[i].count = new_rx_count;
+			err = ixgbe_setup_rx_resources(&temp_ring[i]);
 			if (err) {
 				while (i) {
 					i--;
-					ixgbe_free_rx_resources(&temp_rx_ring[i]);
+					ixgbe_free_rx_resources(&temp_ring[i]);
 				}
 				goto err_setup;
 			}
+
 		}
-		need_update = true;
-	}
 
-	/* if rings need to be updated, here's the place to do it in one shot */
-	if (need_update) {
-		ixgbe_down(adapter);
+		for (i = 0; i < adapter->num_rx_queues; i++) {
+			ixgbe_free_rx_resources(adapter->rx_ring[i]);
 
-		/* tx */
-		if (new_tx_count != adapter->tx_ring_count) {
-			for (i = 0; i < adapter->num_tx_queues; i++) {
-				ixgbe_free_tx_resources(adapter->tx_ring[i]);
-				memcpy(adapter->tx_ring[i], &temp_tx_ring[i],
-				       sizeof(struct ixgbe_ring));
-			}
-			adapter->tx_ring_count = new_tx_count;
+			memcpy(adapter->rx_ring[i], &temp_ring[i],
+			       sizeof(struct ixgbe_ring));
 		}
 
-		/* rx */
-		if (new_rx_count != adapter->rx_ring_count) {
-			for (i = 0; i < adapter->num_rx_queues; i++) {
-				ixgbe_free_rx_resources(adapter->rx_ring[i]);
-				memcpy(adapter->rx_ring[i], &temp_rx_ring[i],
-				       sizeof(struct ixgbe_ring));
-			}
-			adapter->rx_ring_count = new_rx_count;
-		}
-		ixgbe_up(adapter);
+		adapter->rx_ring_count = new_rx_count;
 	}
 
-	vfree(temp_rx_ring);
 err_setup:
-	vfree(temp_tx_ring);
+	ixgbe_up(adapter);
+	vfree(temp_ring);
 clear_reset:
 	clear_bit(__IXGBE_RESETTING, &adapter->state);
 	return err;

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

@@ -1244,6 +1244,7 @@ static unsigned int ixgbe_get_headlen(unsigned char *data,
 		struct vlan_hdr *vlan;
 		/* l3 headers */
 		struct iphdr *ipv4;
+		struct ipv6hdr *ipv6;
 	} hdr;
 	__be16 protocol;
 	u8 nexthdr = 0;	/* default to not TCP */
@@ -1284,6 +1285,13 @@ static unsigned int ixgbe_get_headlen(unsigned char *data,
 		/* record next protocol */
 		nexthdr = hdr.ipv4->protocol;
 		hdr.network += hlen;
+	} else if (protocol == __constant_htons(ETH_P_IPV6)) {
+		if ((hdr.network - data) > (max_len - sizeof(struct ipv6hdr)))
+			return max_len;
+
+		/* record next protocol */
+		nexthdr = hdr.ipv6->nexthdr;
+		hdr.network += sizeof(struct ipv6hdr);
 #ifdef IXGBE_FCOE
 	} else if (protocol == __constant_htons(ETH_P_FCOE)) {
 		if ((hdr.network - data) > (max_len - FCOE_HEADER_LEN))
@@ -1294,7 +1302,7 @@ static unsigned int ixgbe_get_headlen(unsigned char *data,
 		return hdr.network - data;
 	}
 
-	/* finally sort out TCP */
+	/* finally sort out TCP/UDP */
 	if (nexthdr == IPPROTO_TCP) {
 		if ((hdr.network - data) > (max_len - sizeof(struct tcphdr)))
 			return max_len;
@@ -1307,6 +1315,11 @@ static unsigned int ixgbe_get_headlen(unsigned char *data,
 			return hdr.network - data;
 
 		hdr.network += hlen;
+	} else if (nexthdr == IPPROTO_UDP) {
+		if ((hdr.network - data) > (max_len - sizeof(struct udphdr)))
+			return max_len;
+
+		hdr.network += sizeof(struct udphdr);
 	}
 
 	/*
@@ -3276,9 +3289,6 @@ static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
 		IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
 	}
 
-	/* MHADD will allow an extra 4 bytes past for vlan tagged frames */
-	max_frame += VLAN_HLEN;
-
 	hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
 	/* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
 	hlreg0 |= IXGBE_HLREG0_JUMBOEN;
@@ -4197,6 +4207,11 @@ void ixgbe_reset(struct ixgbe_adapter *adapter)
 	/* update SAN MAC vmdq pool selection */
 	if (hw->mac.san_mac_rar_index)
 		hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0));
+
+#ifdef CONFIG_IXGBE_PTP
+	if (adapter->flags2 & IXGBE_FLAG2_PTP_ENABLED)
+		ixgbe_ptp_reset(adapter);
+#endif
 }
 
 /**
@@ -4906,6 +4921,10 @@ static int ixgbe_open(struct net_device *netdev)
 	if (err)
 		goto err_set_queues;
 
+#ifdef CONFIG_IXGBE_PTP
+	ixgbe_ptp_init(adapter);
+#endif /* CONFIG_IXGBE_PTP*/
+
 	ixgbe_up_complete(adapter);
 
 	return 0;
@@ -4937,6 +4956,10 @@ static int ixgbe_close(struct net_device *netdev)
 {
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
 
+#ifdef CONFIG_IXGBE_PTP
+	ixgbe_ptp_stop(adapter);
+#endif
+
 	ixgbe_down(adapter);
 	ixgbe_free_irq(adapter);
 
@@ -5447,6 +5470,23 @@ static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter)
 	adapter->link_speed = link_speed;
 }
 
+static void ixgbe_update_default_up(struct ixgbe_adapter *adapter)
+{
+#ifdef CONFIG_IXGBE_DCB
+	struct net_device *netdev = adapter->netdev;
+	struct dcb_app app = {
+			      .selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE,
+			      .protocol = 0,
+			     };
+	u8 up = 0;
+
+	if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)
+		up = dcb_ieee_getapp_mask(netdev, &app);
+
+	adapter->default_up = (up > 1) ? (ffs(up) - 1) : 0;
+#endif
+}
+
 /**
  * ixgbe_watchdog_link_is_up - update netif_carrier status and
  *                             print link up message
@@ -5488,7 +5528,8 @@ static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter)
 	}
 
 #ifdef CONFIG_IXGBE_PTP
-	ixgbe_ptp_start_cyclecounter(adapter);
+	if (adapter->flags2 & IXGBE_FLAG2_PTP_ENABLED)
+		ixgbe_ptp_start_cyclecounter(adapter);
 #endif
 
 	e_info(drv, "NIC Link is Up %s, Flow Control: %s\n",
@@ -5506,6 +5547,9 @@ static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter)
 	netif_carrier_on(netdev);
 	ixgbe_check_vf_rate_limit(adapter);
 
+	/* update the default user priority for VFs */
+	ixgbe_update_default_up(adapter);
+
 	/* ping all the active vfs to let them know link has changed */
 	ixgbe_ping_all_vfs(adapter);
 }
@@ -5532,7 +5576,8 @@ static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter)
 		adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
 
 #ifdef CONFIG_IXGBE_PTP
-	ixgbe_ptp_start_cyclecounter(adapter);
+	if (adapter->flags2 & IXGBE_FLAG2_PTP_ENABLED)
+		ixgbe_ptp_start_cyclecounter(adapter);
 #endif
 
 	e_info(drv, "NIC Link is Down\n");
@@ -6490,6 +6535,7 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
 		if (skb_pad(skb, 17 - skb->len))
 			return NETDEV_TX_OK;
 		skb->len = 17;
+		skb_set_tail_pointer(skb, 17);
 	}
 
 	tx_ring = adapter->tx_ring[skb->queue_mapping];
@@ -7047,6 +7093,7 @@ int ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id,
 				break;
 		case IXGBE_SUBDEV_ID_82599_SFP:
 		case IXGBE_SUBDEV_ID_82599_RNDC:
+		case IXGBE_SUBDEV_ID_82599_ECNA_DP:
 			is_wol_supported = 1;
 			break;
 		}
@@ -7369,10 +7416,6 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
 
 	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
 
-#ifdef CONFIG_IXGBE_PTP
-	ixgbe_ptp_init(adapter);
-#endif /* CONFIG_IXGBE_PTP*/
-
 	/* save off EEPROM version number */
 	hw->eeprom.ops.read(hw, 0x2e, &adapter->eeprom_verh);
 	hw->eeprom.ops.read(hw, 0x2d, &adapter->eeprom_verl);
@@ -7510,9 +7553,6 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev)
 	set_bit(__IXGBE_DOWN, &adapter->state);
 	cancel_work_sync(&adapter->service_task);
 
-#ifdef CONFIG_IXGBE_PTP
-	ixgbe_ptp_stop(adapter);
-#endif
 
 #ifdef CONFIG_IXGBE_DCA
 	if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {

drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h

@@ -71,6 +71,7 @@
 enum ixgbe_pfvf_api_rev {
 	ixgbe_mbox_api_10,	/* API version 1.0, linux/freebsd VF driver */
 	ixgbe_mbox_api_20,	/* API version 2.0, solaris Phase1 VF driver */
+	ixgbe_mbox_api_11,	/* API version 1.1, linux/freebsd VF driver */
 	/* This value should always be last */
 	ixgbe_mbox_api_unknown,	/* indicates that API version is not known */
 };
@@ -86,6 +87,15 @@ enum ixgbe_pfvf_api_rev {
 #define IXGBE_VF_SET_MACVLAN	0x06 /* VF requests PF for unicast filter */
 #define IXGBE_VF_API_NEGOTIATE	0x08 /* negotiate API version */
 
+/* mailbox API, version 1.1 VF requests */
+#define IXGBE_VF_GET_QUEUES	0x09 /* get queue configuration */
+
+/* GET_QUEUES return data indices within the mailbox */
+#define IXGBE_VF_TX_QUEUES	1	/* number of Tx queues supported */
+#define IXGBE_VF_RX_QUEUES	2	/* number of Rx queues supported */
+#define IXGBE_VF_TRANS_VLAN	3	/* Indication of port vlan */
+#define IXGBE_VF_DEF_QUEUE	4	/* Default queue offset */
+
 /* length of permanent address message returned from PF */
 #define IXGBE_VF_PERMADDR_MSG_LEN 4
 /* word in permanent address message with the current multicast type */

drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c

@@ -411,7 +411,7 @@ void ixgbe_ptp_overflow_check(struct ixgbe_adapter *adapter)
 	unsigned long elapsed_jiffies = adapter->last_overflow_check - jiffies;
 	struct timespec ts;
 
-	if ((adapter->flags2 & IXGBE_FLAG2_OVERFLOW_CHECK_ENABLED) &&
+	if ((adapter->flags2 & IXGBE_FLAG2_PTP_ENABLED) &&
 	    (elapsed_jiffies >= IXGBE_OVERFLOW_PERIOD)) {
 		ixgbe_ptp_gettime(&adapter->ptp_caps, &ts);
 		adapter->last_overflow_check = jiffies;
@@ -759,57 +759,19 @@ int ixgbe_ptp_hwtstamp_ioctl(struct ixgbe_adapter *adapter,
  * ixgbe_ptp_start_cyclecounter - create the cycle counter from hw
  * @adapter: pointer to the adapter structure
  *
- * this function initializes the timecounter and cyclecounter
- * structures for use in generated a ns counter from the arbitrary
- * fixed point cycles registers in the hardware.
- *
- * A change in link speed impacts the frequency of the DMA clock on
- * the device, which is used to generate the cycle counter
- * registers. Therefor this function is called whenever the link speed
- * changes.
- *
- * This function also turns on the SDP pin for clock out feature (X540
- * only), because this is where the shift is first calculated.
+ * This function should be called to set the proper values for the TIMINCA
+ * register and tell the cyclecounter structure what the tick rate of SYSTIME
+ * is. It does not directly modify SYSTIME registers or the timecounter
+ * structure. It should be called whenever a new TIMINCA value is necessary,
+ * such as during initialization or when the link speed changes.
  */
 void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter)
 {
 	struct ixgbe_hw *hw = &adapter->hw;
 	u32 incval = 0;
-	u32 timinca = 0;
 	u32 shift = 0;
-	u32 cycle_speed;
 	unsigned long flags;
 
-	/**
-	 * Determine what speed we need to set the cyclecounter
-	 * for. It should be different for 100Mb, 1Gb, and 10Gb. Treat
-	 * unknown speeds as 10Gb. (Hence why we can't just copy the
-	 * link_speed.
-	 */
-	switch (adapter->link_speed) {
-	case IXGBE_LINK_SPEED_100_FULL:
-	case IXGBE_LINK_SPEED_1GB_FULL:
-	case IXGBE_LINK_SPEED_10GB_FULL:
-		cycle_speed = adapter->link_speed;
-		break;
-	default:
-		/* cycle speed should be 10Gb when there is no link */
-		cycle_speed = IXGBE_LINK_SPEED_10GB_FULL;
-		break;
-	}
-
-	/*
-	 * grab the current TIMINCA value from the register so that it can be
-	 * double checked. If the register value has been cleared, it must be
-	 * reset to the correct value for generating a cyclecounter. If
-	 * TIMINCA is zero, the SYSTIME registers do not increment at all.
-	 */
-	timinca = IXGBE_READ_REG(hw, IXGBE_TIMINCA);
-
-	/* Bail if the cycle speed didn't change and TIMINCA is non-zero */
-	if (adapter->cycle_speed == cycle_speed && timinca)
-		return;
-
 	/**
 	 * Scale the NIC cycle counter by a large factor so that
 	 * relatively small corrections to the frequency can be added
@@ -819,8 +781,12 @@ void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter)
 	 * to nanoseconds using only a multiplier and a right-shift,
 	 * and (c) the value must fit within the timinca register space
 	 * => math based on internal DMA clock rate and available bits
+	 *
+	 * Note that when there is no link, internal DMA clock is same as when
+	 * link speed is 10Gb. Set the registers correctly even when link is
+	 * down to preserve the clock setting
 	 */
-	switch (cycle_speed) {
+	switch (adapter->link_speed) {
 	case IXGBE_LINK_SPEED_100_FULL:
 		incval = IXGBE_INCVAL_100;
 		shift = IXGBE_INCVAL_SHIFT_100;
@@ -830,6 +796,7 @@ void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter)
 		shift = IXGBE_INCVAL_SHIFT_1GB;
 		break;
 	case IXGBE_LINK_SPEED_10GB_FULL:
+	default:
 		incval = IXGBE_INCVAL_10GB;
 		shift = IXGBE_INCVAL_SHIFT_10GB;
 		break;
@@ -857,18 +824,11 @@ void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter)
 		return;
 	}
 
-	/* reset the system time registers */
-	IXGBE_WRITE_REG(hw, IXGBE_SYSTIML, 0x00000000);
-	IXGBE_WRITE_REG(hw, IXGBE_SYSTIMH, 0x00000000);
-	IXGBE_WRITE_FLUSH(hw);
-
-	/* store the new cycle speed */
-	adapter->cycle_speed = cycle_speed;
-
+	/* update the base incval used to calculate frequency adjustment */
 	ACCESS_ONCE(adapter->base_incval) = incval;
 	smp_mb();
 
-	/* grab the ptp lock */
+	/* need lock to prevent incorrect read while modifying cyclecounter */
 	spin_lock_irqsave(&adapter->tmreg_lock, flags);
 
 	memset(&adapter->cc, 0, sizeof(adapter->cc));
@@ -877,6 +837,31 @@ void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter)
 	adapter->cc.shift = shift;
 	adapter->cc.mult = 1;
 
+	spin_unlock_irqrestore(&adapter->tmreg_lock, flags);
+}
+
+/**
+ * ixgbe_ptp_reset
+ * @adapter: the ixgbe private board structure
+ *
+ * When the MAC resets, all timesync features are reset. This function should be
+ * called to re-enable the PTP clock structure. It will re-init the timecounter
+ * structure based on the kernel time as well as setup the cycle counter data.
+ */
+void ixgbe_ptp_reset(struct ixgbe_adapter *adapter)
+{
+	struct ixgbe_hw *hw = &adapter->hw;
+	unsigned long flags;
+
+	/* set SYSTIME registers to 0 just in case */
+	IXGBE_WRITE_REG(hw, IXGBE_SYSTIML, 0x00000000);
+	IXGBE_WRITE_REG(hw, IXGBE_SYSTIMH, 0x00000000);
+	IXGBE_WRITE_FLUSH(hw);
+
+	ixgbe_ptp_start_cyclecounter(adapter);
+
+	spin_lock_irqsave(&adapter->tmreg_lock, flags);
+
 	/* reset the ns time counter */
 	timecounter_init(&adapter->tc, &adapter->cc,
 			 ktime_to_ns(ktime_get_real()));
@@ -904,7 +889,7 @@ void ixgbe_ptp_init(struct ixgbe_adapter *adapter)
 
 	switch (adapter->hw.mac.type) {
 	case ixgbe_mac_X540:
-		snprintf(adapter->ptp_caps.name, 16, "%pm", netdev->dev_addr);
+		snprintf(adapter->ptp_caps.name, 16, "%s", netdev->name);
 		adapter->ptp_caps.owner = THIS_MODULE;
 		adapter->ptp_caps.max_adj = 250000000;
 		adapter->ptp_caps.n_alarm = 0;
@@ -918,7 +903,7 @@ void ixgbe_ptp_init(struct ixgbe_adapter *adapter)
 		adapter->ptp_caps.enable = ixgbe_ptp_enable;
 		break;
 	case ixgbe_mac_82599EB:
-		snprintf(adapter->ptp_caps.name, 16, "%pm", netdev->dev_addr);
+		snprintf(adapter->ptp_caps.name, 16, "%s", netdev->name);
 		adapter->ptp_caps.owner = THIS_MODULE;
 		adapter->ptp_caps.max_adj = 250000000;
 		adapter->ptp_caps.n_alarm = 0;
@@ -942,11 +927,6 @@ void ixgbe_ptp_init(struct ixgbe_adapter *adapter)
 
 	spin_lock_init(&adapter->tmreg_lock);
 
-	ixgbe_ptp_start_cyclecounter(adapter);
-
-	/* (Re)start the overflow check */
-	adapter->flags2 |= IXGBE_FLAG2_OVERFLOW_CHECK_ENABLED;
-
 	adapter->ptp_clock = ptp_clock_register(&adapter->ptp_caps,
 						&adapter->pdev->dev);
 	if (IS_ERR(adapter->ptp_clock)) {
@@ -955,6 +935,11 @@ void ixgbe_ptp_init(struct ixgbe_adapter *adapter)
 	} else
 		e_dev_info("registered PHC device on %s\n", netdev->name);
 
+	ixgbe_ptp_reset(adapter);
+
+	/* set the flag that PTP has been enabled */
+	adapter->flags2 |= IXGBE_FLAG2_PTP_ENABLED;
+
 	return;
 }
 
@@ -967,7 +952,7 @@ void ixgbe_ptp_init(struct ixgbe_adapter *adapter)
 void ixgbe_ptp_stop(struct ixgbe_adapter *adapter)
 {
 	/* stop the overflow check task */
-	adapter->flags2 &= ~(IXGBE_FLAG2_OVERFLOW_CHECK_ENABLED |
+	adapter->flags2 &= ~(IXGBE_FLAG2_PTP_ENABLED |
 			     IXGBE_FLAG2_PTP_PPS_ENABLED);
 
 	ixgbe_ptp_setup_sdp(adapter);

drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c

@@ -371,14 +371,26 @@ static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
 					     IXGBE_FCOE_JUMBO_FRAME_SIZE);
 
 #endif /* CONFIG_FCOE */
-		/*
-		 * If the PF or VF are running w/ jumbo frames enabled we
-		 * need to shut down the VF Rx path as we cannot support
-		 * jumbo frames on legacy VFs
-		 */
-		if ((pf_max_frame > ETH_FRAME_LEN) ||
-		    (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
-			err = -EINVAL;
+		switch (adapter->vfinfo[vf].vf_api) {
+		case ixgbe_mbox_api_11:
+			/*
+			 * Version 1.1 supports jumbo frames on VFs if PF has
+			 * jumbo frames enabled which means legacy VFs are
+			 * disabled
+			 */
+			if (pf_max_frame > ETH_FRAME_LEN)
+				break;
+		default:
+			/*
+			 * If the PF or VF are running w/ jumbo frames enabled
+			 * we need to shut down the VF Rx path as we cannot
+			 * support jumbo frames on legacy VFs
+			 */
+			if ((pf_max_frame > ETH_FRAME_LEN) ||
+			    (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
+				err = -EINVAL;
+			break;
+		}
 
 		/* determine VF receive enable location */
 		vf_shift = vf % 32;
@@ -431,35 +443,47 @@ static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
 	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
 }
 
-static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter, u32 vid, u32 vf)
+static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter,
+			    u16 vid, u16 qos, u32 vf)
 {
 	struct ixgbe_hw *hw = &adapter->hw;
+	u32 vmvir = vid | (qos << VLAN_PRIO_SHIFT) | IXGBE_VMVIR_VLANA_DEFAULT;
 
-	if (vid)
-		IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf),
-				(vid | IXGBE_VMVIR_VLANA_DEFAULT));
-	else
-		IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
+	IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), vmvir);
 }
 
+static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
+{
+	struct ixgbe_hw *hw = &adapter->hw;
+
+	IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
+}
 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
 {
 	struct ixgbe_hw *hw = &adapter->hw;
+	struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
 	int rar_entry = hw->mac.num_rar_entries - (vf + 1);
+	u8 num_tcs = netdev_get_num_tc(adapter->netdev);
+
+	/* add PF assigned VLAN or VLAN 0 */
+	ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
 
 	/* reset offloads to defaults */
-	if (adapter->vfinfo[vf].pf_vlan) {
-		ixgbe_set_vf_vlan(adapter, true,
-				  adapter->vfinfo[vf].pf_vlan, vf);
-		ixgbe_set_vmvir(adapter,
-				(adapter->vfinfo[vf].pf_vlan |
-				 (adapter->vfinfo[vf].pf_qos <<
-				  VLAN_PRIO_SHIFT)), vf);
-		ixgbe_set_vmolr(hw, vf, false);
+	ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
+
+	/* set outgoing tags for VFs */
+	if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
+		ixgbe_clear_vmvir(adapter, vf);
 	} else {
-		ixgbe_set_vf_vlan(adapter, true, 0, vf);
-		ixgbe_set_vmvir(adapter, 0, vf);
-		ixgbe_set_vmolr(hw, vf, true);
+		if (vfinfo->pf_qos || !num_tcs)
+			ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
+					vfinfo->pf_qos, vf);
+		else
+			ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
+					adapter->default_up, vf);
+
+		if (vfinfo->spoofchk_enabled)
+			hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
 	}
 
 	/* reset multicast table array for vf */
@@ -661,8 +685,9 @@ static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
 	int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
 	int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
 	int err;
+	u8 tcs = netdev_get_num_tc(adapter->netdev);
 
-	if (adapter->vfinfo[vf].pf_vlan) {
+	if (adapter->vfinfo[vf].pf_vlan || tcs) {
 		e_warn(drv,
 		       "VF %d attempted to override administratively set VLAN configuration\n"
 		       "Reload the VF driver to resume operations\n",
@@ -727,6 +752,7 @@ static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
 
 	switch (api) {
 	case ixgbe_mbox_api_10:
+	case ixgbe_mbox_api_11:
 		adapter->vfinfo[vf].vf_api = api;
 		return 0;
 	default:
@@ -738,6 +764,45 @@ static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
 	return -1;
 }
 
+static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
+			       u32 *msgbuf, u32 vf)
+{
+	struct net_device *dev = adapter->netdev;
+	struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
+	unsigned int default_tc = 0;
+	u8 num_tcs = netdev_get_num_tc(dev);
+
+	/* verify the PF is supporting the correct APIs */
+	switch (adapter->vfinfo[vf].vf_api) {
+	case ixgbe_mbox_api_20:
+	case ixgbe_mbox_api_11:
+		break;
+	default:
+		return -1;
+	}
+
+	/* only allow 1 Tx queue for bandwidth limiting */
+	msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
+	msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
+
+	/* if TCs > 1 determine which TC belongs to default user priority */
+	if (num_tcs > 1)
+		default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
+
+	/* notify VF of need for VLAN tag stripping, and correct queue */
+	if (num_tcs)
+		msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
+	else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
+		msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
+	else
+		msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
+
+	/* notify VF of default queue */
+	msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
+
+	return 0;
+}
+
 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
 {
 	u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
@@ -791,6 +856,9 @@ static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
 	case IXGBE_VF_API_NEGOTIATE:
 		retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
 		break;
+	case IXGBE_VF_GET_QUEUES:
+		retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
+		break;
 	default:
 		e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
 		retval = IXGBE_ERR_MBX;
@@ -896,7 +964,7 @@ int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
 		err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
 		if (err)
 			goto out;
-		ixgbe_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf);
+		ixgbe_set_vmvir(adapter, vlan, qos, vf);
 		ixgbe_set_vmolr(hw, vf, false);
 		if (adapter->vfinfo[vf].spoofchk_enabled)
 			hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
@@ -916,7 +984,7 @@ int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
 	} else {
 		err = ixgbe_set_vf_vlan(adapter, false,
 					adapter->vfinfo[vf].pf_vlan, vf);
-		ixgbe_set_vmvir(adapter, vlan, vf);
+		ixgbe_clear_vmvir(adapter, vf);
 		ixgbe_set_vmolr(hw, vf, true);
 		hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
 		if (adapter->vfinfo[vf].vlan_count)

drivers/net/ethernet/intel/ixgbe/ixgbe_type.h

@@ -56,6 +56,7 @@
 #define IXGBE_SUBDEV_ID_82599_SFP        0x11A9
 #define IXGBE_SUBDEV_ID_82599_RNDC       0x1F72
 #define IXGBE_SUBDEV_ID_82599_560FLR     0x17D0
+#define IXGBE_SUBDEV_ID_82599_ECNA_DP    0x0470
 #define IXGBE_DEV_ID_82599_SFP_EM        0x1507
 #define IXGBE_DEV_ID_82599_SFP_SF2       0x154D
 #define IXGBE_DEV_ID_82599EN_SFP         0x1557

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

@@ -33,8 +33,11 @@
 #define IXGBE_DEV_ID_X540_VF            0x1515
 
 #define IXGBE_VF_IRQ_CLEAR_MASK         7
-#define IXGBE_VF_MAX_TX_QUEUES          1
-#define IXGBE_VF_MAX_RX_QUEUES          1
+#define IXGBE_VF_MAX_TX_QUEUES          8
+#define IXGBE_VF_MAX_RX_QUEUES          8
+
+/* DCB define */
+#define IXGBE_VF_MAX_TRAFFIC_CLASS	8
 
 /* Link speed */
 typedef u32 ixgbe_link_speed;

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

@@ -89,8 +89,8 @@ struct ixgbevf_ring {
 /* How many Rx Buffers do we bundle into one write to the hardware ? */
 #define IXGBEVF_RX_BUFFER_WRITE	16	/* Must be power of 2 */
 
-#define MAX_RX_QUEUES 1
-#define MAX_TX_QUEUES 1
+#define MAX_RX_QUEUES IXGBE_VF_MAX_RX_QUEUES
+#define MAX_TX_QUEUES IXGBE_VF_MAX_TX_QUEUES
 
 #define IXGBEVF_DEFAULT_TXD   1024
 #define IXGBEVF_DEFAULT_RXD   512

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

@@ -99,6 +99,7 @@ MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
 
 /* forward decls */
 static void ixgbevf_set_itr(struct ixgbevf_q_vector *q_vector);
+static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter);
 
 static inline void ixgbevf_release_rx_desc(struct ixgbe_hw *hw,
 					   struct ixgbevf_ring *rx_ring,
@@ -1335,7 +1336,8 @@ static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter)
 static void ixgbevf_negotiate_api(struct ixgbevf_adapter *adapter)
 {
 	struct ixgbe_hw *hw = &adapter->hw;
-	int api[] = { ixgbe_mbox_api_10,
+	int api[] = { ixgbe_mbox_api_11,
+		      ixgbe_mbox_api_10,
 		      ixgbe_mbox_api_unknown };
 	int err = 0, idx = 0;
 
@@ -1413,12 +1415,87 @@ static void ixgbevf_up_complete(struct ixgbevf_adapter *adapter)
 	mod_timer(&adapter->watchdog_timer, jiffies);
 }
 
+static int ixgbevf_reset_queues(struct ixgbevf_adapter *adapter)
+{
+	struct ixgbe_hw *hw = &adapter->hw;
+	struct ixgbevf_ring *rx_ring;
+	unsigned int def_q = 0;
+	unsigned int num_tcs = 0;
+	unsigned int num_rx_queues = 1;
+	int err, i;
+
+	spin_lock(&adapter->mbx_lock);
+
+	/* fetch queue configuration from the PF */
+	err = ixgbevf_get_queues(hw, &num_tcs, &def_q);
+
+	spin_unlock(&adapter->mbx_lock);
+
+	if (err)
+		return err;
+
+	if (num_tcs > 1) {
+		/* update default Tx ring register index */
+		adapter->tx_ring[0].reg_idx = def_q;
+
+		/* we need as many queues as traffic classes */
+		num_rx_queues = num_tcs;
+	}
+
+	/* nothing to do if we have the correct number of queues */
+	if (adapter->num_rx_queues == num_rx_queues)
+		return 0;
+
+	/* allocate new rings */
+	rx_ring = kcalloc(num_rx_queues,
+			  sizeof(struct ixgbevf_ring), GFP_KERNEL);
+	if (!rx_ring)
+		return -ENOMEM;
+
+	/* setup ring fields */
+	for (i = 0; i < num_rx_queues; i++) {
+		rx_ring[i].count = adapter->rx_ring_count;
+		rx_ring[i].queue_index = i;
+		rx_ring[i].reg_idx = i;
+		rx_ring[i].dev = &adapter->pdev->dev;
+		rx_ring[i].netdev = adapter->netdev;
+
+		/* allocate resources on the ring */
+		err = ixgbevf_setup_rx_resources(adapter, &rx_ring[i]);
+		if (err) {
+			while (i) {
+				i--;
+				ixgbevf_free_rx_resources(adapter, &rx_ring[i]);
+			}
+			kfree(rx_ring);
+			return err;
+		}
+	}
+
+	/* free the existing rings and queues */
+	ixgbevf_free_all_rx_resources(adapter);
+	adapter->num_rx_queues = 0;
+	kfree(adapter->rx_ring);
+
+	/* move new rings into position on the adapter struct */
+	adapter->rx_ring = rx_ring;
+	adapter->num_rx_queues = num_rx_queues;
+
+	/* reset ring to vector mapping */
+	ixgbevf_reset_q_vectors(adapter);
+	ixgbevf_map_rings_to_vectors(adapter);
+
+	return 0;
+}
+
 void ixgbevf_up(struct ixgbevf_adapter *adapter)
 {
 	struct ixgbe_hw *hw = &adapter->hw;
 
 	ixgbevf_negotiate_api(adapter);
 
+	ixgbevf_reset_queues(adapter);
+
 	ixgbevf_configure(adapter);
 
 	ixgbevf_up_complete(adapter);
@@ -1717,6 +1794,7 @@ static int ixgbevf_alloc_queues(struct ixgbevf_adapter *adapter)
 	for (i = 0; i < adapter->num_tx_queues; i++) {
 		adapter->tx_ring[i].count = adapter->tx_ring_count;
 		adapter->tx_ring[i].queue_index = i;
+		/* reg_idx may be remapped later by DCB config */
 		adapter->tx_ring[i].reg_idx = i;
 		adapter->tx_ring[i].dev = &adapter->pdev->dev;
 		adapter->tx_ring[i].netdev = adapter->netdev;
@@ -1950,8 +2028,11 @@ static int __devinit ixgbevf_sw_init(struct ixgbevf_adapter *adapter)
 	hw->subsystem_device_id = pdev->subsystem_device;
 
 	hw->mbx.ops.init_params(hw);
-	hw->mac.max_tx_queues = MAX_TX_QUEUES;
-	hw->mac.max_rx_queues = MAX_RX_QUEUES;
+
+	/* assume legacy case in which PF would only give VF 2 queues */
+	hw->mac.max_tx_queues = 2;
+	hw->mac.max_rx_queues = 2;
+
 	err = hw->mac.ops.reset_hw(hw);
 	if (err) {
 		dev_info(&pdev->dev,
@@ -2377,6 +2458,63 @@ static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter)
 						  &adapter->rx_ring[i]);
 }
 
+static int ixgbevf_setup_queues(struct ixgbevf_adapter *adapter)
+{
+	struct ixgbe_hw *hw = &adapter->hw;
+	struct ixgbevf_ring *rx_ring;
+	unsigned int def_q = 0;
+	unsigned int num_tcs = 0;
+	unsigned int num_rx_queues = 1;
+	int err, i;
+
+	spin_lock(&adapter->mbx_lock);
+
+	/* fetch queue configuration from the PF */
+	err = ixgbevf_get_queues(hw, &num_tcs, &def_q);
+
+	spin_unlock(&adapter->mbx_lock);
+
+	if (err)
+		return err;
+
+	if (num_tcs > 1) {
+		/* update default Tx ring register index */
+		adapter->tx_ring[0].reg_idx = def_q;
+
+		/* we need as many queues as traffic classes */
+		num_rx_queues = num_tcs;
+	}
+
+	/* nothing to do if we have the correct number of queues */
+	if (adapter->num_rx_queues == num_rx_queues)
+		return 0;
+
+	/* allocate new rings */
+	rx_ring = kcalloc(num_rx_queues,
+			  sizeof(struct ixgbevf_ring), GFP_KERNEL);
+	if (!rx_ring)
+		return -ENOMEM;
+
+	/* setup ring fields */
+	for (i = 0; i < num_rx_queues; i++) {
+		rx_ring[i].count = adapter->rx_ring_count;
+		rx_ring[i].queue_index = i;
+		rx_ring[i].reg_idx = i;
+		rx_ring[i].dev = &adapter->pdev->dev;
+		rx_ring[i].netdev = adapter->netdev;
+	}
+
+	/* free the existing ring and queues */
+	adapter->num_rx_queues = 0;
+	kfree(adapter->rx_ring);
+
+	/* move new rings into position on the adapter struct */
+	adapter->rx_ring = rx_ring;
+	adapter->num_rx_queues = num_rx_queues;
+
+	return 0;
+}
+
 /**
  * ixgbevf_open - Called when a network interface is made active
  * @netdev: network interface device structure
@@ -2413,6 +2551,11 @@ static int ixgbevf_open(struct net_device *netdev)
 
 	ixgbevf_negotiate_api(adapter);
 
+	/* setup queue reg_idx and Rx queue count */
+	err = ixgbevf_setup_queues(adapter);
+	if (err)
+		goto err_setup_queues;
+
 	/* allocate transmit descriptors */
 	err = ixgbevf_setup_all_tx_resources(adapter);
 	if (err)
@@ -2451,6 +2594,7 @@ static int ixgbevf_open(struct net_device *netdev)
 	ixgbevf_free_all_rx_resources(adapter);
 err_setup_tx:
 	ixgbevf_free_all_tx_resources(adapter);
+err_setup_queues:
 	ixgbevf_reset(adapter);
 
 err_setup_reset:
@@ -2925,8 +3069,15 @@ static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
 	int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
 	int max_possible_frame = MAXIMUM_ETHERNET_VLAN_SIZE;
 
-	if (adapter->hw.mac.type == ixgbe_mac_X540_vf)
+	switch (adapter->hw.api_version) {
+	case ixgbe_mbox_api_11:
 		max_possible_frame = IXGBE_MAX_JUMBO_FRAME_SIZE;
+		break;
+	default:
+		if (adapter->hw.mac.type == ixgbe_mac_X540_vf)
+			max_possible_frame = IXGBE_MAX_JUMBO_FRAME_SIZE;
+		break;
+	}
 
 	/* MTU < 68 is an error and causes problems on some kernels */
 	if ((new_mtu < 68) || (max_frame > max_possible_frame))

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

@@ -85,6 +85,7 @@
 enum ixgbe_pfvf_api_rev {
 	ixgbe_mbox_api_10,	/* API version 1.0, linux/freebsd VF driver */
 	ixgbe_mbox_api_20,	/* API version 2.0, solaris Phase1 VF driver */
+	ixgbe_mbox_api_11,	/* API version 1.1, linux/freebsd VF driver */
 	/* This value should always be last */
 	ixgbe_mbox_api_unknown,	/* indicates that API version is not known */
 };
@@ -100,6 +101,15 @@ enum ixgbe_pfvf_api_rev {
 #define IXGBE_VF_SET_MACVLAN	0x06 /* VF requests PF for unicast filter */
 #define IXGBE_VF_API_NEGOTIATE	0x08 /* negotiate API version */
 
+/* mailbox API, version 1.1 VF requests */
+#define IXGBE_VF_GET_QUEUE	0x09 /* get queue configuration */
+
+/* GET_QUEUES return data indices within the mailbox */
+#define IXGBE_VF_TX_QUEUES	1	/* number of Tx queues supported */
+#define IXGBE_VF_RX_QUEUES	2	/* number of Rx queues supported */
+#define IXGBE_VF_TRANS_VLAN	3	/* Indication of port vlan */
+#define IXGBE_VF_DEF_QUEUE	4	/* Default queue offset */
+
 /* length of permanent address message returned from PF */
 #define IXGBE_VF_PERMADDR_MSG_LEN 4
 /* word in permanent address message with the current multicast type */

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

@@ -513,6 +513,64 @@ int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
 	return err;
 }
 
+int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
+		       unsigned int *default_tc)
+{
+	int err;
+	u32 msg[5];
+
+	/* do nothing if API doesn't support ixgbevf_get_queues */
+	switch (hw->api_version) {
+	case ixgbe_mbox_api_11:
+		break;
+	default:
+		return 0;
+	}
+
+	/* Fetch queue configuration from the PF */
+	msg[0] = IXGBE_VF_GET_QUEUE;
+	msg[1] = msg[2] = msg[3] = msg[4] = 0;
+	err = hw->mbx.ops.write_posted(hw, msg, 5);
+
+	if (!err)
+		err = hw->mbx.ops.read_posted(hw, msg, 5);
+
+	if (!err) {
+		msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
+
+		/*
+		 * if we we didn't get an ACK there must have been
+		 * some sort of mailbox error so we should treat it
+		 * as such
+		 */
+		if (msg[0] != (IXGBE_VF_GET_QUEUE | IXGBE_VT_MSGTYPE_ACK))
+			return IXGBE_ERR_MBX;
+
+		/* record and validate values from message */
+		hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES];
+		if (hw->mac.max_tx_queues == 0 ||
+		    hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES)
+			hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES;
+
+		hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES];
+		if (hw->mac.max_rx_queues == 0 ||
+		    hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES)
+			hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES;
+
+		*num_tcs = msg[IXGBE_VF_TRANS_VLAN];
+		/* in case of unknown state assume we cannot tag frames */
+		if (*num_tcs > hw->mac.max_rx_queues)
+			*num_tcs = 1;
+
+		*default_tc = msg[IXGBE_VF_DEF_QUEUE];
+		/* default to queue 0 on out-of-bounds queue number */
+		if (*default_tc >= hw->mac.max_tx_queues)
+			*default_tc = 0;
+	}
+
+	return err;
+}
+
 static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
 	.init_hw             = ixgbevf_init_hw_vf,
 	.reset_hw            = ixgbevf_reset_hw_vf,

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

@@ -174,5 +174,7 @@ struct ixgbevf_info {
 
 void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size);
 int ixgbevf_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);
 #endif /* __IXGBE_VF_H__ */