Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/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) {