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

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2014-06-20

This series contains updates to i40e and i40evf.

Anjali provides an update to the registers to handle the updates from the
hardware.  Also provides a fix so that we do not try to access the rings
through the qvectors at the time of freeing the qvectors.

Jesse provides a workaround for some older NVM versions where the NVM
was not filling in the GLQF_HKEY register, so made sure that the
critical register is initialized.

Michal provides a fix to reset the head and tail on admin queue
initialization where head and tail are not reset by the hardware.

Neerav adds a helper routine that would wait for the Rx/Tx queue to reach
the enable or disable state that is requested.  Also provides a fix
to the debugfs command "lldp get remote" which was dumping the local
LLDPDU instead of the peer's LLDPDU.  Fixed a bug when all the Tx hang
recovery mechanisms have failed and the driver tries to bring down the
interface in the interrupt context.

Shannon provides a patch to clear the Virtual Ethernet Bridge (VEB) stats
when the PF stats are cleared.  Also cleans the service tasks so that
they do not run while a reset is in progress.

Mitch fixes an issue in i40evf_get_rxfh() where only fifteen registers
were being read instead of all sixteen.

Carolyn provides a change to the RSS configuration to set table size and
write to the hardware to confirm the RSS table size being used.

Kamil makes a change to the admin queue debug prints so that they will not
cause segmentation faults in some of our tool applications.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/i40e/i40e.h

@@ -84,6 +84,7 @@
 #define I40E_AQ_WORK_LIMIT            16
 #define I40E_MAX_USER_PRIORITY        8
 #define I40E_DEFAULT_MSG_ENABLE       4
+#define I40E_QUEUE_WAIT_RETRY_LIMIT   10
 
 #define I40E_NVM_VERSION_LO_SHIFT  0
 #define I40E_NVM_VERSION_LO_MASK   (0xff << I40E_NVM_VERSION_LO_SHIFT)
@@ -134,6 +135,7 @@ enum i40e_state_t {
 	__I40E_FILTER_OVERFLOW_PROMISC,
 	__I40E_SUSPENDED,
 	__I40E_BAD_EEPROM,
+	__I40E_DOWN_REQUESTED,
 };
 
 enum i40e_interrupt_policy {
@@ -348,6 +350,7 @@ struct i40e_pf {
 	u32 rx_hwtstamp_cleared;
 	bool ptp_tx;
 	bool ptp_rx;
+	u16 rss_table_size;
 };
 
 struct i40e_mac_filter {

drivers/net/ethernet/intel/i40e/i40e_adminq.c

@@ -296,6 +296,10 @@ static i40e_status i40e_config_asq_regs(struct i40e_hw *hw)
 	i40e_status ret_code = 0;
 	u32 reg = 0;
 
+	/* Clear Head and Tail */
+	wr32(hw, hw->aq.asq.head, 0);
+	wr32(hw, hw->aq.asq.tail, 0);
+
 	if (hw->mac.type == I40E_MAC_VF) {
 		/* configure the transmit queue */
 		wr32(hw, I40E_VF_ATQBAH1,
@@ -334,6 +338,10 @@ static i40e_status i40e_config_arq_regs(struct i40e_hw *hw)
 	i40e_status ret_code = 0;
 	u32 reg = 0;
 
+	/* Clear Head and Tail */
+	wr32(hw, hw->aq.arq.head, 0);
+	wr32(hw, hw->aq.arq.tail, 0);
+
 	if (hw->mac.type == I40E_MAC_VF) {
 		/* configure the receive queue */
 		wr32(hw, I40E_VF_ARQBAH1,
@@ -677,6 +685,10 @@ static u16 i40e_clean_asq(struct i40e_hw *hw)
 	desc = I40E_ADMINQ_DESC(*asq, ntc);
 	details = I40E_ADMINQ_DETAILS(*asq, ntc);
 	while (rd32(hw, hw->aq.asq.head) != ntc) {
+		i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
+			   "%s: ntc %d head %d.\n", __func__, ntc,
+			   rd32(hw, hw->aq.asq.head));
+
 		if (details->callback) {
 			I40E_ADMINQ_CALLBACK cb_func =
 					(I40E_ADMINQ_CALLBACK)details->callback;
@@ -736,6 +748,15 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw,
 	struct i40e_aq_desc *desc_on_ring;
 	bool cmd_completed = false;
 	u16  retval = 0;
+	u32  val = 0;
+
+	val = rd32(hw, hw->aq.asq.head);
+	if (val >= hw->aq.num_asq_entries) {
+		i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
+			   "AQTX: head overrun at %d\n", val);
+		status = I40E_ERR_QUEUE_EMPTY;
+		goto asq_send_command_exit;
+	}
 
 	if (hw->aq.asq.count == 0) {
 		i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
@@ -829,6 +850,7 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw,
 	}
 
 	/* bump the tail */
+	i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: desc and buffer:\n");
 	i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc_on_ring, buff);
 	(hw->aq.asq.next_to_use)++;
 	if (hw->aq.asq.next_to_use == hw->aq.asq.count)
@@ -866,6 +888,7 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw,
 				   I40E_DEBUG_AQ_MESSAGE,
 				   "AQTX: Command completed with error 0x%X.\n",
 				   retval);
+
 			/* strip off FW internal code */
 			retval &= 0xff;
 		}
@@ -880,6 +903,12 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw,
 	if (i40e_is_nvm_update_op(desc))
 		hw->aq.nvm_busy = true;
 
+	if (le16_to_cpu(desc->datalen) == buff_size) {
+		i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
+			   "AQTX: desc and buffer writeback:\n");
+		i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, buff);
+	}
+
 	/* update the error if time out occurred */
 	if ((!cmd_completed) &&
 	    (!details->async && !details->postpone)) {
@@ -951,10 +980,6 @@ i40e_status i40e_clean_arq_element(struct i40e_hw *hw,
 	/* now clean the next descriptor */
 	desc = I40E_ADMINQ_DESC(hw->aq.arq, ntc);
 	desc_idx = ntc;
-	i40e_debug_aq(hw,
-		      I40E_DEBUG_AQ_COMMAND,
-		      (void *)desc,
-		      hw->aq.arq.r.arq_bi[desc_idx].va);
 
 	flags = le16_to_cpu(desc->flags);
 	if (flags & I40E_AQ_FLAG_ERR) {
@@ -977,6 +1002,9 @@ i40e_status i40e_clean_arq_element(struct i40e_hw *hw,
 	if (i40e_is_nvm_update_op(&e->desc))
 		hw->aq.nvm_busy = false;
 
+	i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQRX: desc and buffer:\n");
+	i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, e->msg_buf);
+
 	/* Restore the original datalen and buffer address in the desc,
 	 * FW updates datalen to indicate the event message
 	 * size

drivers/net/ethernet/intel/i40e/i40e_common.c

@@ -1839,7 +1839,6 @@ static void i40e_parse_discover_capabilities(struct i40e_hw *hw, void *buff,
 	struct i40e_aqc_list_capabilities_element_resp *cap;
 	u32 number, logical_id, phys_id;
 	struct i40e_hw_capabilities *p;
-	u32 reg_val;
 	u32 i = 0;
 	u16 id;
 
@@ -1910,11 +1909,7 @@ static void i40e_parse_discover_capabilities(struct i40e_hw *hw, void *buff,
 			break;
 		case I40E_DEV_FUNC_CAP_RSS:
 			p->rss = true;
-			reg_val = rd32(hw, I40E_PFQF_CTL_0);
-			if (reg_val & I40E_PFQF_CTL_0_HASHLUTSIZE_MASK)
-				p->rss_table_size = number;
-			else
-				p->rss_table_size = 128;
+			p->rss_table_size = number;
 			p->rss_table_entry_width = logical_id;
 			break;
 		case I40E_DEV_FUNC_CAP_RX_QUEUES:

drivers/net/ethernet/intel/i40e/i40e_debugfs.c

@@ -1830,7 +1830,7 @@ static ssize_t i40e_dbg_command_write(struct file *filp,
 
 			ret = i40e_aq_get_lldp_mib(&pf->hw,
 					I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
-					I40E_AQ_LLDP_MIB_LOCAL,
+					I40E_AQ_LLDP_MIB_REMOTE,
 					buff, I40E_LLDPDU_SIZE,
 					&llen, &rlen, NULL);
 			if (ret) {

drivers/net/ethernet/intel/i40e/i40e_main.c

@@ -39,7 +39,7 @@ static const char i40e_driver_string[] =
 
 #define DRV_VERSION_MAJOR 0
 #define DRV_VERSION_MINOR 4
-#define DRV_VERSION_BUILD 10
+#define DRV_VERSION_BUILD 13
 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
 	     __stringify(DRV_VERSION_MINOR) "." \
 	     __stringify(DRV_VERSION_BUILD)    DRV_KERN
@@ -304,8 +304,8 @@ static void i40e_tx_timeout(struct net_device *netdev)
 		break;
 	default:
 		netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
-		set_bit(__I40E_DOWN, &vsi->state);
-		i40e_down(vsi);
+		set_bit(__I40E_DOWN_REQUESTED, &pf->state);
+		set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 		break;
 	}
 	i40e_service_event_schedule(pf);
@@ -444,9 +444,21 @@ void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
  **/
 void i40e_pf_reset_stats(struct i40e_pf *pf)
 {
+	int i;
+
 	memset(&pf->stats, 0, sizeof(pf->stats));
 	memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 	pf->stat_offsets_loaded = false;
+
+	for (i = 0; i < I40E_MAX_VEB; i++) {
+		if (pf->veb[i]) {
+			memset(&pf->veb[i]->stats, 0,
+			       sizeof(pf->veb[i]->stats));
+			memset(&pf->veb[i]->stats_offsets, 0,
+			       sizeof(pf->veb[i]->stats_offsets));
+			pf->veb[i]->stat_offsets_loaded = false;
+		}
+	}
 }
 
 /**
@@ -3151,8 +3163,12 @@ static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
 
 	/* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
 	 * group them so there are multiple queues per vector.
+	 * It is also important to go through all the vectors available to be
+	 * sure that if we don't use all the vectors, that the remaining vectors
+	 * are cleared. This is especially important when decreasing the
+	 * number of queues in use.
 	 */
-	for (; v_start < q_vectors && qp_remaining; v_start++) {
+	for (; v_start < q_vectors; v_start++) {
 		struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
 
 		num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
@@ -3227,6 +3243,35 @@ static void i40e_netpoll(struct net_device *netdev)
 }
 #endif
 
+/**
+ * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
+ * @pf: the PF being configured
+ * @pf_q: the PF queue
+ * @enable: enable or disable state of the queue
+ *
+ * This routine will wait for the given Tx queue of the PF to reach the
+ * enabled or disabled state.
+ * Returns -ETIMEDOUT in case of failing to reach the requested state after
+ * multiple retries; else will return 0 in case of success.
+ **/
+static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
+{
+	int i;
+	u32 tx_reg;
+
+	for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
+		tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
+		if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
+			break;
+
+		udelay(10);
+	}
+	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
 /**
  * i40e_vsi_control_tx - Start or stop a VSI's rings
  * @vsi: the VSI being configured
@@ -3236,7 +3281,7 @@ static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
 {
 	struct i40e_pf *pf = vsi->back;
 	struct i40e_hw *hw = &pf->hw;
-	int i, j, pf_q;
+	int i, j, pf_q, ret = 0;
 	u32 tx_reg;
 
 	pf_q = vsi->base_queue;
@@ -3269,22 +3314,46 @@ static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
 		wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
 
 		/* wait for the change to finish */
-		for (j = 0; j < 10; j++) {
-			tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
-			if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
-				break;
-
-			udelay(10);
-		}
-		if (j >= 10) {
-			dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
-				 pf_q, (enable ? "en" : "dis"));
-			return -ETIMEDOUT;
+		ret = i40e_pf_txq_wait(pf, pf_q, enable);
+		if (ret) {
+			dev_info(&pf->pdev->dev,
+				 "%s: VSI seid %d Tx ring %d %sable timeout\n",
+				 __func__, vsi->seid, pf_q,
+				 (enable ? "en" : "dis"));
+			break;
 		}
 	}
 
 	if (hw->revision_id == 0)
 		mdelay(50);
+	return ret;
+}
+
+/**
+ * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
+ * @pf: the PF being configured
+ * @pf_q: the PF queue
+ * @enable: enable or disable state of the queue
+ *
+ * This routine will wait for the given Rx queue of the PF to reach the
+ * enabled or disabled state.
+ * Returns -ETIMEDOUT in case of failing to reach the requested state after
+ * multiple retries; else will return 0 in case of success.
+ **/
+static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
+{
+	int i;
+	u32 rx_reg;
+
+	for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
+		rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
+		if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
+			break;
+
+		udelay(10);
+	}
+	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
+		return -ETIMEDOUT;
 
 	return 0;
 }
@@ -3298,7 +3367,7 @@ static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
 {
 	struct i40e_pf *pf = vsi->back;
 	struct i40e_hw *hw = &pf->hw;
-	int i, j, pf_q;
+	int i, j, pf_q, ret = 0;
 	u32 rx_reg;
 
 	pf_q = vsi->base_queue;
@@ -3323,22 +3392,17 @@ static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
 		wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
 
 		/* wait for the change to finish */
-		for (j = 0; j < 10; j++) {
-			rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
-
-			if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
-				break;
-
-			udelay(10);
-		}
-		if (j >= 10) {
-			dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
-				 pf_q, (enable ? "en" : "dis"));
-			return -ETIMEDOUT;
+		ret = i40e_pf_rxq_wait(pf, pf_q, enable);
+		if (ret) {
+			dev_info(&pf->pdev->dev,
+				 "%s: VSI seid %d Rx ring %d %sable timeout\n",
+				 __func__, vsi->seid, pf_q,
+				 (enable ? "en" : "dis"));
+			break;
 		}
 	}
 
-	return 0;
+	return ret;
 }
 
 /**
@@ -4638,6 +4702,23 @@ void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
 			}
 		}
 
+		/* no further action needed, so return now */
+		return;
+	} else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
+		int v;
+
+		/* Find the VSI(s) that needs to be brought down */
+		dev_info(&pf->pdev->dev, "VSI down requested\n");
+		for (v = 0; v < pf->num_alloc_vsi; v++) {
+			struct i40e_vsi *vsi = pf->vsi[v];
+			if (vsi != NULL &&
+			    test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
+				set_bit(__I40E_DOWN, &vsi->state);
+				i40e_down(vsi);
+				clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
+			}
+		}
+
 		/* no further action needed, so return now */
 		return;
 	} else {
@@ -5110,6 +5191,10 @@ static void i40e_reset_subtask(struct i40e_pf *pf)
 		reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
 		clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 	}
+	if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
+		reset_flags |= (1 << __I40E_DOWN_REQUESTED);
+		clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
+	}
 
 	/* If there's a recovery already waiting, it takes
 	 * precedence before starting a new reset sequence.
@@ -5463,6 +5548,20 @@ static void i40e_fdir_sb_setup(struct i40e_pf *pf)
 	struct i40e_vsi *vsi;
 	int i;
 
+	/* quick workaround for an NVM issue that leaves a critical register
+	 * uninitialized
+	 */
+	if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
+		static const u32 hkey[] = {
+			0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
+			0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
+			0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
+			0x95b3a76d};
+
+		for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
+			wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
+	}
+
 	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
 		return;
 
@@ -5744,26 +5843,28 @@ static void i40e_handle_mdd_event(struct i40e_pf *pf)
 	/* find what triggered the MDD event */
 	reg = rd32(hw, I40E_GL_MDET_TX);
 	if (reg & I40E_GL_MDET_TX_VALID_MASK) {
-		u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
-				>> I40E_GL_MDET_TX_FUNCTION_SHIFT;
-		u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
-				>> I40E_GL_MDET_TX_EVENT_SHIFT;
-		u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
-				>> I40E_GL_MDET_TX_QUEUE_SHIFT;
+		u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
+				I40E_GL_MDET_TX_PF_NUM_SHIFT;
+		u8 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
+				I40E_GL_MDET_TX_VF_NUM_SHIFT;
+		u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT) >>
+				I40E_GL_MDET_TX_EVENT_SHIFT;
+		u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
+				I40E_GL_MDET_TX_QUEUE_SHIFT;
 		dev_info(&pf->pdev->dev,
-			 "Malicious Driver Detection event 0x%02x on TX queue %d of function 0x%02x\n",
-			 event, queue, func);
+			 "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
+			 event, queue, pf_num, vf_num);
 		wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
 		mdd_detected = true;
 	}
 	reg = rd32(hw, I40E_GL_MDET_RX);
 	if (reg & I40E_GL_MDET_RX_VALID_MASK) {
-		u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
-				>> I40E_GL_MDET_RX_FUNCTION_SHIFT;
-		u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
-				>> I40E_GL_MDET_RX_EVENT_SHIFT;
-		u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
-				>> I40E_GL_MDET_RX_QUEUE_SHIFT;
+		u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
+				I40E_GL_MDET_RX_FUNCTION_SHIFT;
+		u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT) >>
+				I40E_GL_MDET_RX_EVENT_SHIFT;
+		u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
+				I40E_GL_MDET_RX_QUEUE_SHIFT;
 		dev_info(&pf->pdev->dev,
 			 "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
 			 event, queue, func);
@@ -5860,6 +5961,12 @@ static void i40e_service_task(struct work_struct *work)
 					  service_task);
 	unsigned long start_time = jiffies;
 
+	/* don't bother with service tasks if a reset is in progress */
+	if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
+		i40e_service_event_complete(pf);
+		return;
+	}
+
 	i40e_reset_subtask(pf);
 	i40e_handle_mdd_event(pf);
 	i40e_vc_process_vflr_event(pf);
@@ -6492,6 +6599,7 @@ static int i40e_config_rss(struct i40e_pf *pf)
 	u32 lut = 0;
 	int i, j;
 	u64 hena;
+	u32 reg_val;
 
 	/* Fill out hash function seed */
 	for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
@@ -6504,8 +6612,19 @@ static int i40e_config_rss(struct i40e_pf *pf)
 	wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
 	wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
 
+	/* Check capability and Set table size and register per hw expectation*/
+	reg_val = rd32(hw, I40E_PFQF_CTL_0);
+	if (hw->func_caps.rss_table_size == 512) {
+		reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
+		pf->rss_table_size = 512;
+	} else {
+		pf->rss_table_size = 128;
+		reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
+	}
+	wr32(hw, I40E_PFQF_CTL_0, reg_val);
+
 	/* Populate the LUT with max no. of queues in round robin fashion */
-	for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
+	for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
 
 		/* The assumption is that lan qp count will be the highest
 		 * qp count for any PF VSI that needs RSS.

drivers/net/ethernet/intel/i40e/i40e_type.h

@@ -50,6 +50,9 @@
 					 (d) == I40E_DEV_ID_QSFP_B  || \
 					 (d) == I40E_DEV_ID_QSFP_C)
 
+/* I40E_MASK is a macro used on 32 bit registers */
+#define I40E_MASK(mask, shift) (mask << shift)
+
 #define I40E_MAX_VSI_QP			16
 #define I40E_MAX_VF_VSI			3
 #define I40E_MAX_CHAINED_RX_BUFFERS	5
@@ -1162,4 +1165,7 @@ enum i40e_reset_type {
 	I40E_RESET_GLOBR	= 2,
 	I40E_RESET_EMPR		= 3,
 };
+
+/* RSS Hash Table Size */
+#define I40E_PFQF_CTL_0_HASHLUTSIZE_512	0x00010000
 #endif /* _I40E_TYPE_H_ */

drivers/net/ethernet/intel/i40evf/i40e_adminq.c

@@ -294,6 +294,10 @@ static i40e_status i40e_config_asq_regs(struct i40e_hw *hw)
 	i40e_status ret_code = 0;
 	u32 reg = 0;
 
+	/* Clear Head and Tail */
+	wr32(hw, hw->aq.asq.head, 0);
+	wr32(hw, hw->aq.asq.tail, 0);
+
 	if (hw->mac.type == I40E_MAC_VF) {
 		/* configure the transmit queue */
 		wr32(hw, I40E_VF_ATQBAH1,
@@ -332,6 +336,10 @@ static i40e_status i40e_config_arq_regs(struct i40e_hw *hw)
 	i40e_status ret_code = 0;
 	u32 reg = 0;
 
+	/* Clear Head and Tail */
+	wr32(hw, hw->aq.arq.head, 0);
+	wr32(hw, hw->aq.arq.tail, 0);
+
 	if (hw->mac.type == I40E_MAC_VF) {
 		/* configure the receive queue */
 		wr32(hw, I40E_VF_ARQBAH1,
@@ -630,6 +638,10 @@ static u16 i40e_clean_asq(struct i40e_hw *hw)
 	desc = I40E_ADMINQ_DESC(*asq, ntc);
 	details = I40E_ADMINQ_DETAILS(*asq, ntc);
 	while (rd32(hw, hw->aq.asq.head) != ntc) {
+		i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
+			   "%s: ntc %d head %d.\n", __func__, ntc,
+			   rd32(hw, hw->aq.asq.head));
+
 		if (details->callback) {
 			I40E_ADMINQ_CALLBACK cb_func =
 					(I40E_ADMINQ_CALLBACK)details->callback;
@@ -690,6 +702,15 @@ i40e_status i40evf_asq_send_command(struct i40e_hw *hw,
 	struct i40e_aq_desc *desc_on_ring;
 	bool cmd_completed = false;
 	u16  retval = 0;
+	u32  val = 0;
+
+	val = rd32(hw, hw->aq.asq.head);
+	if (val >= hw->aq.num_asq_entries) {
+		i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
+			   "AQTX: head overrun at %d\n", val);
+		status = I40E_ERR_QUEUE_EMPTY;
+		goto asq_send_command_exit;
+	}
 
 	if (hw->aq.asq.count == 0) {
 		i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
@@ -783,6 +804,7 @@ i40e_status i40evf_asq_send_command(struct i40e_hw *hw,
 	}
 
 	/* bump the tail */
+	i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: desc and buffer:\n");
 	i40evf_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc_on_ring, buff);
 	(hw->aq.asq.next_to_use)++;
 	if (hw->aq.asq.next_to_use == hw->aq.asq.count)
@@ -820,6 +842,7 @@ i40e_status i40evf_asq_send_command(struct i40e_hw *hw,
 				   I40E_DEBUG_AQ_MESSAGE,
 				   "AQTX: Command completed with error 0x%X.\n",
 				   retval);
+
 			/* strip off FW internal code */
 			retval &= 0xff;
 		}
@@ -834,6 +857,12 @@ i40e_status i40evf_asq_send_command(struct i40e_hw *hw,
 	if (i40e_is_nvm_update_op(desc))
 		hw->aq.nvm_busy = true;
 
+	if (le16_to_cpu(desc->datalen) == buff_size) {
+		i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
+			   "AQTX: desc and buffer writeback:\n");
+		i40evf_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, buff);
+	}
+
 	/* update the error if time out occurred */
 	if ((!cmd_completed) &&
 	    (!details->async && !details->postpone)) {
@@ -905,10 +934,6 @@ i40e_status i40evf_clean_arq_element(struct i40e_hw *hw,
 	/* now clean the next descriptor */
 	desc = I40E_ADMINQ_DESC(hw->aq.arq, ntc);
 	desc_idx = ntc;
-	i40evf_debug_aq(hw,
-		      I40E_DEBUG_AQ_COMMAND,
-		      (void *)desc,
-		      hw->aq.arq.r.arq_bi[desc_idx].va);
 
 	flags = le16_to_cpu(desc->flags);
 	if (flags & I40E_AQ_FLAG_ERR) {
@@ -931,6 +956,9 @@ i40e_status i40evf_clean_arq_element(struct i40e_hw *hw,
 	if (i40e_is_nvm_update_op(&e->desc))
 		hw->aq.nvm_busy = false;
 
+	i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQRX: desc and buffer:\n");
+	i40evf_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, e->msg_buf);
+
 	/* Restore the original datalen and buffer address in the desc,
 	 * FW updates datalen to indicate the event message
 	 * size

drivers/net/ethernet/intel/i40evf/i40e_type.h

@@ -50,6 +50,9 @@
 					 (d) == I40E_DEV_ID_QSFP_B  || \
 					 (d) == I40E_DEV_ID_QSFP_C)
 
+/* I40E_MASK is a macro used on 32 bit registers */
+#define I40E_MASK(mask, shift) (mask << shift)
+
 #define I40E_MAX_VSI_QP			16
 #define I40E_MAX_VF_VSI			3
 #define I40E_MAX_CHAINED_RX_BUFFERS	5
@@ -1162,4 +1165,7 @@ enum i40e_reset_type {
 	I40E_RESET_GLOBR	= 2,
 	I40E_RESET_EMPR		= 3,
 };
+
+/* RSS Hash Table Size */
+#define I40E_PFQF_CTL_0_HASHLUTSIZE_512	0x00010000
 #endif /* _I40E_TYPE_H_ */

drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c

@@ -632,7 +632,7 @@ static int i40evf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key)
 	u32 hlut_val;
 	int i, j;
 
-	for (i = 0, j = 0; i < I40E_VFQF_HLUT_MAX_INDEX; i++) {
+	for (i = 0, j = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) {
 		hlut_val = rd32(hw, I40E_VFQF_HLUT(i));
 		indir[j++] = hlut_val & 0xff;
 		indir[j++] = (hlut_val >> 8) & 0xff;
@@ -659,7 +659,7 @@ static int i40evf_set_rxfh(struct net_device *netdev, const u32 *indir,
 	u32 hlut_val;
 	int i, j;
 
-	for (i = 0, j = 0; i < I40E_VFQF_HLUT_MAX_INDEX + 1; i++) {
+	for (i = 0, j = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) {
 		hlut_val = indir[j++];
 		hlut_val |= indir[j++] << 8;
 		hlut_val |= indir[j++] << 16;

drivers/net/ethernet/intel/i40evf/i40evf_main.c

@@ -36,7 +36,7 @@ char i40evf_driver_name[] = "i40evf";
 static const char i40evf_driver_string[] =
 	"Intel(R) XL710 X710 Virtual Function Network Driver";
 
-#define DRV_VERSION "0.9.34"
+#define DRV_VERSION "0.9.35"
 const char i40evf_driver_version[] = DRV_VERSION;
 static const char i40evf_copyright[] =
 	"Copyright (c) 2013 - 2014 Intel Corporation.";