Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 287 insertions, 178 deletions

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 73f3a85fd238..619c89218b4b 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -36,7 +36,7 @@ static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
 #else
 #define DRIVERNAPI "-NAPI"
 #endif
-#define DRV_VERSION "7.3.15-k2"DRIVERNAPI
+#define DRV_VERSION "7.3.20-k2"DRIVERNAPI
 char e1000_driver_version[] = DRV_VERSION;
 static char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
 
@@ -213,6 +213,12 @@ static void e1000_netpoll (struct net_device *netdev);
 
 extern void e1000_check_options(struct e1000_adapter *adapter);
 
+#define COPYBREAK_DEFAULT 256
+static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;
+module_param(copybreak, uint, 0644);
+MODULE_PARM_DESC(copybreak,
+	"Maximum size of packet that is copied to a new buffer on receive");
+
 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
                      pci_channel_state_t state);
 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
@@ -264,7 +270,13 @@ e1000_init_module(void)
 	printk(KERN_INFO "%s\n", e1000_copyright);
 
 	ret = pci_register_driver(&e1000_driver);
-
+	if (copybreak != COPYBREAK_DEFAULT) {
+		if (copybreak == 0)
+			printk(KERN_INFO "e1000: copybreak disabled\n");
+		else
+			printk(KERN_INFO "e1000: copybreak enabled for "
+			       "packets <= %u bytes\n", copybreak);
+	}
 	return ret;
 }
 
@@ -464,6 +476,52 @@ e1000_get_hw_control(struct e1000_adapter *adapter)
 	}
 }
 
+static void
+e1000_init_manageability(struct e1000_adapter *adapter)
+{
+	if (adapter->en_mng_pt) {
+		uint32_t manc = E1000_READ_REG(&adapter->hw, MANC);
+
+		/* disable hardware interception of ARP */
+		manc &= ~(E1000_MANC_ARP_EN);
+
+		/* enable receiving management packets to the host */
+		/* this will probably generate destination unreachable messages
+		 * from the host OS, but the packets will be handled on SMBUS */
+		if (adapter->hw.has_manc2h) {
+			uint32_t manc2h = E1000_READ_REG(&adapter->hw, MANC2H);
+
+			manc |= E1000_MANC_EN_MNG2HOST;
+#define E1000_MNG2HOST_PORT_623 (1 << 5)
+#define E1000_MNG2HOST_PORT_664 (1 << 6)
+			manc2h |= E1000_MNG2HOST_PORT_623;
+			manc2h |= E1000_MNG2HOST_PORT_664;
+			E1000_WRITE_REG(&adapter->hw, MANC2H, manc2h);
+		}
+
+		E1000_WRITE_REG(&adapter->hw, MANC, manc);
+	}
+}
+
+static void
+e1000_release_manageability(struct e1000_adapter *adapter)
+{
+	if (adapter->en_mng_pt) {
+		uint32_t manc = E1000_READ_REG(&adapter->hw, MANC);
+
+		/* re-enable hardware interception of ARP */
+		manc |= E1000_MANC_ARP_EN;
+
+		if (adapter->hw.has_manc2h)
+			manc &= ~E1000_MANC_EN_MNG2HOST;
+
+		/* don't explicitly have to mess with MANC2H since
+		 * MANC has an enable disable that gates MANC2H */
+
+		E1000_WRITE_REG(&adapter->hw, MANC, manc);
+	}
+}
+
 int
 e1000_up(struct e1000_adapter *adapter)
 {
@@ -475,6 +533,7 @@ e1000_up(struct e1000_adapter *adapter)
 	e1000_set_multi(netdev);
 
 	e1000_restore_vlan(adapter);
+	e1000_init_manageability(adapter);
 
 	e1000_configure_tx(adapter);
 	e1000_setup_rctl(adapter);
@@ -497,7 +556,8 @@ e1000_up(struct e1000_adapter *adapter)
 
 	clear_bit(__E1000_DOWN, &adapter->flags);
 
-	mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
+	/* fire a link change interrupt to start the watchdog */
+	E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC);
 	return 0;
 }
 
@@ -614,16 +674,34 @@ e1000_reinit_locked(struct e1000_adapter *adapter)
 void
 e1000_reset(struct e1000_adapter *adapter)
 {
-	uint32_t pba, manc;
+	uint32_t pba = 0, tx_space, min_tx_space, min_rx_space;
 	uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF;
+	boolean_t legacy_pba_adjust = FALSE;
 
 	/* Repartition Pba for greater than 9k mtu
 	 * To take effect CTRL.RST is required.
 	 */
 
 	switch (adapter->hw.mac_type) {
+	case e1000_82542_rev2_0:
+	case e1000_82542_rev2_1:
+	case e1000_82543:
+	case e1000_82544:
+	case e1000_82540:
+	case e1000_82541:
+	case e1000_82541_rev_2:
+		legacy_pba_adjust = TRUE;
+		pba = E1000_PBA_48K;
+		break;
+	case e1000_82545:
+	case e1000_82545_rev_3:
+	case e1000_82546:
+	case e1000_82546_rev_3:
+		pba = E1000_PBA_48K;
+		break;
 	case e1000_82547:
 	case e1000_82547_rev_2:
+		legacy_pba_adjust = TRUE;
 		pba = E1000_PBA_30K;
 		break;
 	case e1000_82571:
@@ -632,27 +710,80 @@ e1000_reset(struct e1000_adapter *adapter)
 		pba = E1000_PBA_38K;
 		break;
 	case e1000_82573:
-		pba = E1000_PBA_12K;
+		pba = E1000_PBA_20K;
 		break;
 	case e1000_ich8lan:
 		pba = E1000_PBA_8K;
-		break;
-	default:
-		pba = E1000_PBA_48K;
+	case e1000_undefined:
+	case e1000_num_macs:
 		break;
 	}
 
-	if ((adapter->hw.mac_type != e1000_82573) &&
-	   (adapter->netdev->mtu > E1000_RXBUFFER_8192))
-		pba -= 8; /* allocate more FIFO for Tx */
+	if (legacy_pba_adjust == TRUE) {
+		if (adapter->netdev->mtu > E1000_RXBUFFER_8192)
+			pba -= 8; /* allocate more FIFO for Tx */
 
+		if (adapter->hw.mac_type == e1000_82547) {
+			adapter->tx_fifo_head = 0;
+			adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
+			adapter->tx_fifo_size =
+				(E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
+			atomic_set(&adapter->tx_fifo_stall, 0);
+		}
+	} else if (adapter->hw.max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) {
+		/* adjust PBA for jumbo frames */
+		E1000_WRITE_REG(&adapter->hw, PBA, pba);
+
+		/* To maintain wire speed transmits, the Tx FIFO should be
+		 * large enough to accomodate two full transmit packets,
+		 * rounded up to the next 1KB and expressed in KB.  Likewise,
+		 * the Rx FIFO should be large enough to accomodate at least
+		 * one full receive packet and is similarly rounded up and
+		 * expressed in KB. */
+		pba = E1000_READ_REG(&adapter->hw, PBA);
+		/* upper 16 bits has Tx packet buffer allocation size in KB */
+		tx_space = pba >> 16;
+		/* lower 16 bits has Rx packet buffer allocation size in KB */
+		pba &= 0xffff;
+		/* don't include ethernet FCS because hardware appends/strips */
+		min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE +
+		               VLAN_TAG_SIZE;
+		min_tx_space = min_rx_space;
+		min_tx_space *= 2;
+		E1000_ROUNDUP(min_tx_space, 1024);
+		min_tx_space >>= 10;
+		E1000_ROUNDUP(min_rx_space, 1024);
+		min_rx_space >>= 10;
+
+		/* If current Tx allocation is less than the min Tx FIFO size,
+		 * and the min Tx FIFO size is less than the current Rx FIFO
+		 * allocation, take space away from current Rx allocation */
+		if (tx_space < min_tx_space &&
+		    ((min_tx_space - tx_space) < pba)) {
+			pba = pba - (min_tx_space - tx_space);
+
+			/* PCI/PCIx hardware has PBA alignment constraints */
+			switch (adapter->hw.mac_type) {
+			case e1000_82545 ... e1000_82546_rev_3:
+				pba &= ~(E1000_PBA_8K - 1);
+				break;
+			default:
+				break;
+			}
 
-	if (adapter->hw.mac_type == e1000_82547) {
-		adapter->tx_fifo_head = 0;
-		adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
-		adapter->tx_fifo_size =
-			(E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
-		atomic_set(&adapter->tx_fifo_stall, 0);
+			/* if short on rx space, rx wins and must trump tx
+			 * adjustment or use Early Receive if available */
+			if (pba < min_rx_space) {
+				switch (adapter->hw.mac_type) {
+				case e1000_82573:
+					/* ERT enabled in e1000_configure_rx */
+					break;
+				default:
+					pba = min_rx_space;
+					break;
+				}
+			}
+		}
 	}
 
 	E1000_WRITE_REG(&adapter->hw, PBA, pba);
@@ -685,6 +816,20 @@ e1000_reset(struct e1000_adapter *adapter)
 	if (e1000_init_hw(&adapter->hw))
 		DPRINTK(PROBE, ERR, "Hardware Error\n");
 	e1000_update_mng_vlan(adapter);
+
+	/* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
+	if (adapter->hw.mac_type >= e1000_82544 &&
+	    adapter->hw.mac_type <= e1000_82547_rev_2 &&
+	    adapter->hw.autoneg == 1 &&
+	    adapter->hw.autoneg_advertised == ADVERTISE_1000_FULL) {
+		uint32_t ctrl = E1000_READ_REG(&adapter->hw, CTRL);
+		/* clear phy power management bit if we are in gig only mode,
+		 * which if enabled will attempt negotiation to 100Mb, which
+		 * can cause a loss of link at power off or driver unload */
+		ctrl &= ~E1000_CTRL_SWDPIN3;
+		E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
+	}
+
 	/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
 	E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
 
@@ -705,14 +850,7 @@ e1000_reset(struct e1000_adapter *adapter)
 		                    phy_data);
 	}
 
-	if ((adapter->en_mng_pt) &&
-	    (adapter->hw.mac_type >= e1000_82540) &&
-	    (adapter->hw.mac_type < e1000_82571) &&
-	    (adapter->hw.media_type == e1000_media_type_copper)) {
-		manc = E1000_READ_REG(&adapter->hw, MANC);
-		manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST);
-		E1000_WRITE_REG(&adapter->hw, MANC, manc);
-	}
+	e1000_release_manageability(adapter);
 }
 
 /**
@@ -852,16 +990,12 @@ e1000_probe(struct pci_dev *pdev,
 			netdev->features &= ~NETIF_F_HW_VLAN_FILTER;
 	}
 
-#ifdef NETIF_F_TSO
 	if ((adapter->hw.mac_type >= e1000_82544) &&
 	   (adapter->hw.mac_type != e1000_82547))
 		netdev->features |= NETIF_F_TSO;
 
-#ifdef NETIF_F_TSO6
 	if (adapter->hw.mac_type > e1000_82547_rev_2)
 		netdev->features |= NETIF_F_TSO6;
-#endif
-#endif
 	if (pci_using_dac)
 		netdev->features |= NETIF_F_HIGHDMA;
 
@@ -1078,22 +1212,13 @@ e1000_remove(struct pci_dev *pdev)
 {
 	struct net_device *netdev = pci_get_drvdata(pdev);
 	struct e1000_adapter *adapter = netdev_priv(netdev);
-	uint32_t manc;
 #ifdef CONFIG_E1000_NAPI
 	int i;
 #endif
 
 	flush_scheduled_work();
 
-	if (adapter->hw.mac_type >= e1000_82540 &&
-	    adapter->hw.mac_type < e1000_82571 &&
-	    adapter->hw.media_type == e1000_media_type_copper) {
-		manc = E1000_READ_REG(&adapter->hw, MANC);
-		if (manc & E1000_MANC_SMBUS_EN) {
-			manc |= E1000_MANC_ARP_EN;
-			E1000_WRITE_REG(&adapter->hw, MANC, manc);
-		}
-	}
+	e1000_release_manageability(adapter);
 
 	/* Release control of h/w to f/w.  If f/w is AMT enabled, this
 	 * would have already happened in close and is redundant. */
@@ -1531,9 +1656,9 @@ e1000_configure_tx(struct e1000_adapter *adapter)
 	}
 
 	/* Set the default values for the Tx Inter Packet Gap timer */
-
-	if (hw->media_type == e1000_media_type_fiber ||
-	    hw->media_type == e1000_media_type_internal_serdes)
+	if (adapter->hw.mac_type <= e1000_82547_rev_2 &&
+	    (hw->media_type == e1000_media_type_fiber ||
+	     hw->media_type == e1000_media_type_internal_serdes))
 		tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
 	else
 		tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
@@ -2454,15 +2579,22 @@ e1000_watchdog(unsigned long data)
 
 	if (link) {
 		if (!netif_carrier_ok(netdev)) {
+			uint32_t ctrl;
 			boolean_t txb2b = 1;
 			e1000_get_speed_and_duplex(&adapter->hw,
 			                           &adapter->link_speed,
 			                           &adapter->link_duplex);
 
-			DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n",
-			       adapter->link_speed,
-			       adapter->link_duplex == FULL_DUPLEX ?
-			       "Full Duplex" : "Half Duplex");
+			ctrl = E1000_READ_REG(&adapter->hw, CTRL);
+			DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s, "
+			        "Flow Control: %s\n",
+			        adapter->link_speed,
+			        adapter->link_duplex == FULL_DUPLEX ?
+			        "Full Duplex" : "Half Duplex",
+			        ((ctrl & E1000_CTRL_TFCE) && (ctrl &
+			        E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
+			        E1000_CTRL_RFCE) ? "RX" : ((ctrl &
+			        E1000_CTRL_TFCE) ? "TX" : "None" )));
 
 			/* tweak tx_queue_len according to speed/duplex
 			 * and adjust the timeout factor */
@@ -2490,7 +2622,6 @@ e1000_watchdog(unsigned long data)
 				E1000_WRITE_REG(&adapter->hw, TARC0, tarc0);
 			}
 
-#ifdef NETIF_F_TSO
 			/* disable TSO for pcie and 10/100 speeds, to avoid
 			 * some hardware issues */
 			if (!adapter->tso_force &&
@@ -2501,22 +2632,17 @@ e1000_watchdog(unsigned long data)
 					DPRINTK(PROBE,INFO,
 				        "10/100 speed: disabling TSO\n");
 					netdev->features &= ~NETIF_F_TSO;
-#ifdef NETIF_F_TSO6
 					netdev->features &= ~NETIF_F_TSO6;
-#endif
 					break;
 				case SPEED_1000:
 					netdev->features |= NETIF_F_TSO;
-#ifdef NETIF_F_TSO6
 					netdev->features |= NETIF_F_TSO6;
-#endif
 					break;
 				default:
 					/* oops */
 					break;
 				}
 			}
-#endif
 
 			/* enable transmits in the hardware, need to do this
 			 * after setting TARC0 */
@@ -2528,6 +2654,13 @@ e1000_watchdog(unsigned long data)
 			netif_wake_queue(netdev);
 			mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
 			adapter->smartspeed = 0;
+		} else {
+			/* make sure the receive unit is started */
+			if (adapter->hw.rx_needs_kicking) {
+				struct e1000_hw *hw = &adapter->hw;
+				uint32_t rctl = E1000_READ_REG(hw, RCTL);
+				E1000_WRITE_REG(hw, RCTL, rctl | E1000_RCTL_EN);
+			}
 		}
 	} else {
 		if (netif_carrier_ok(netdev)) {
@@ -2628,29 +2761,34 @@ static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
 	if (packets == 0)
 		goto update_itr_done;
 
-
 	switch (itr_setting) {
 	case lowest_latency:
-		if ((packets < 5) && (bytes > 512))
+		/* jumbo frames get bulk treatment*/
+		if (bytes/packets > 8000)
+			retval = bulk_latency;
+		else if ((packets < 5) && (bytes > 512))
 			retval = low_latency;
 		break;
 	case low_latency:  /* 50 usec aka 20000 ints/s */
 		if (bytes > 10000) {
-			if ((packets < 10) ||
-			     ((bytes/packets) > 1200))
+			/* jumbo frames need bulk latency setting */
+			if (bytes/packets > 8000)
+				retval = bulk_latency;
+			else if ((packets < 10) || ((bytes/packets) > 1200))
 				retval = bulk_latency;
 			else if ((packets > 35))
 				retval = lowest_latency;
-		} else if (packets <= 2 && bytes < 512)
+		} else if (bytes/packets > 2000)
+			retval = bulk_latency;
+		else if (packets <= 2 && bytes < 512)
 			retval = lowest_latency;
 		break;
 	case bulk_latency: /* 250 usec aka 4000 ints/s */
 		if (bytes > 25000) {
 			if (packets > 35)
 				retval = low_latency;
-		} else {
-			if (bytes < 6000)
-				retval = low_latency;
+		} else if (bytes < 6000) {
+			retval = low_latency;
 		}
 		break;
 	}
@@ -2679,17 +2817,20 @@ static void e1000_set_itr(struct e1000_adapter *adapter)
 	                            adapter->tx_itr,
 	                            adapter->total_tx_packets,
 	                            adapter->total_tx_bytes);
+	/* conservative mode (itr 3) eliminates the lowest_latency setting */
+	if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
+		adapter->tx_itr = low_latency;
+
 	adapter->rx_itr = e1000_update_itr(adapter,
 	                            adapter->rx_itr,
 	                            adapter->total_rx_packets,
 	                            adapter->total_rx_bytes);
+	/* conservative mode (itr 3) eliminates the lowest_latency setting */
+	if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
+		adapter->rx_itr = low_latency;
 
 	current_itr = max(adapter->rx_itr, adapter->tx_itr);
 
-	/* conservative mode eliminates the lowest_latency setting */
-	if (current_itr == lowest_latency && (adapter->itr_setting == 3))
-		current_itr = low_latency;
-
 	switch (current_itr) {
 	/* counts and packets in update_itr are dependent on these numbers */
 	case lowest_latency:
@@ -2731,7 +2872,6 @@ static int
 e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
           struct sk_buff *skb)
 {
-#ifdef NETIF_F_TSO
 	struct e1000_context_desc *context_desc;
 	struct e1000_buffer *buffer_info;
 	unsigned int i;
@@ -2760,7 +2900,6 @@ e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
 						   0);
 			cmd_length = E1000_TXD_CMD_IP;
 			ipcse = skb->h.raw - skb->data - 1;
-#ifdef NETIF_F_TSO6
 		} else if (skb->protocol == htons(ETH_P_IPV6)) {
 			skb->nh.ipv6h->payload_len = 0;
 			skb->h.th->check =
@@ -2770,7 +2909,6 @@ e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
 						 IPPROTO_TCP,
 						 0);
 			ipcse = 0;
-#endif
 		}
 		ipcss = skb->nh.raw - skb->data;
 		ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
@@ -2803,8 +2941,6 @@ e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
 
 		return TRUE;
 	}
-#endif
-
 	return FALSE;
 }
 
@@ -2824,8 +2960,9 @@ e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
 		buffer_info = &tx_ring->buffer_info[i];
 		context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
 
+		context_desc->lower_setup.ip_config = 0;
 		context_desc->upper_setup.tcp_fields.tucss = css;
-		context_desc->upper_setup.tcp_fields.tucso = css + skb->csum_offset;
+		context_desc->upper_setup.tcp_fields.tucso = css + skb->csum;
 		context_desc->upper_setup.tcp_fields.tucse = 0;
 		context_desc->tcp_seg_setup.data = 0;
 		context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
@@ -2861,7 +2998,6 @@ e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
 	while (len) {
 		buffer_info = &tx_ring->buffer_info[i];
 		size = min(len, max_per_txd);
-#ifdef NETIF_F_TSO
 		/* Workaround for Controller erratum --
 		 * descriptor for non-tso packet in a linear SKB that follows a
 		 * tso gets written back prematurely before the data is fully
@@ -2876,7 +3012,6 @@ e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
 		 * in TSO mode.  Append 4-byte sentinel desc */
 		if (unlikely(mss && !nr_frags && size == len && size > 8))
 			size -= 4;
-#endif
 		/* work-around for errata 10 and it applies
 		 * to all controllers in PCI-X mode
 		 * The fix is to make sure that the first descriptor of a
@@ -2918,12 +3053,10 @@ e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
 		while (len) {
 			buffer_info = &tx_ring->buffer_info[i];
 			size = min(len, max_per_txd);
-#ifdef NETIF_F_TSO
 			/* Workaround for premature desc write-backs
 			 * in TSO mode.  Append 4-byte sentinel desc */
 			if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
 				size -= 4;
-#endif
 			/* Workaround for potential 82544 hang in PCI-X.
 			 * Avoid terminating buffers within evenly-aligned
 			 * dwords. */
@@ -3148,7 +3281,6 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 	if (adapter->hw.mac_type >= e1000_82571)
 		max_per_txd = 8192;
 
-#ifdef NETIF_F_TSO
 	mss = skb_shinfo(skb)->gso_size;
 	/* The controller does a simple calculation to
 	 * make sure there is enough room in the FIFO before
@@ -3168,6 +3300,16 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 		if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) {
 			switch (adapter->hw.mac_type) {
 				unsigned int pull_size;
+			case e1000_82544:
+				/* Make sure we have room to chop off 4 bytes,
+				 * and that the end alignment will work out to
+				 * this hardware's requirements
+				 * NOTE: this is a TSO only workaround
+				 * if end byte alignment not correct move us
+				 * into the next dword */
+				if ((unsigned long)(skb->tail - 1) & 4)
+					break;
+				/* fall through */
 			case e1000_82571:
 			case e1000_82572:
 			case e1000_82573:
@@ -3192,16 +3334,10 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 	if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
 		count++;
 	count++;
-#else
-	if (skb->ip_summed == CHECKSUM_PARTIAL)
-		count++;
-#endif
 
-#ifdef NETIF_F_TSO
 	/* Controller Erratum workaround */
 	if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
 		count++;
-#endif
 
 	count += TXD_USE_COUNT(len, max_txd_pwr);
 
@@ -3419,12 +3555,11 @@ e1000_change_mtu(struct net_device *netdev, int new_mtu)
 		adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
 
 	netdev->mtu = new_mtu;
+	adapter->hw.max_frame_size = max_frame;
 
 	if (netif_running(netdev))
 		e1000_reinit_locked(adapter);
 
-	adapter->hw.max_frame_size = max_frame;
-
 	return 0;
 }
 
@@ -3449,7 +3584,7 @@ e1000_update_stats(struct e1000_adapter *adapter)
 	 */
 	if (adapter->link_speed == 0)
 		return;
-	if (pdev->error_state && pdev->error_state != pci_channel_io_normal)
+	if (pci_channel_offline(pdev))
 		return;
 
 	spin_lock_irqsave(&adapter->stats_lock, flags);
@@ -3573,6 +3708,11 @@ e1000_update_stats(struct e1000_adapter *adapter)
 	adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
 	adapter->net_stats.tx_window_errors = adapter->stats.latecol;
 	adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
+	if (adapter->hw.bad_tx_carr_stats_fd &&
+	    adapter->link_duplex == FULL_DUPLEX) {
+		adapter->net_stats.tx_carrier_errors = 0;
+		adapter->stats.tncrs = 0;
+	}
 
 	/* Tx Dropped needs to be maintained elsewhere */
 
@@ -3590,6 +3730,13 @@ e1000_update_stats(struct e1000_adapter *adapter)
 			adapter->phy_stats.receive_errors += phy_tmp;
 	}
 
+	/* Management Stats */
+	if (adapter->hw.has_smbus) {
+		adapter->stats.mgptc += E1000_READ_REG(hw, MGTPTC);
+		adapter->stats.mgprc += E1000_READ_REG(hw, MGTPRC);
+		adapter->stats.mgpdc += E1000_READ_REG(hw, MGTPDC);
+	}
+
 	spin_unlock_irqrestore(&adapter->stats_lock, flags);
 }
 #ifdef CONFIG_PCI_MSI
@@ -3600,8 +3747,8 @@ e1000_update_stats(struct e1000_adapter *adapter)
  * @data: pointer to a network interface device structure
  **/
 
-static
-irqreturn_t e1000_intr_msi(int irq, void *data)
+static irqreturn_t
+e1000_intr_msi(int irq, void *data)
 {
 	struct net_device *netdev = data;
 	struct e1000_adapter *adapter = netdev_priv(netdev);
@@ -3609,49 +3756,27 @@ irqreturn_t e1000_intr_msi(int irq, void *data)
 #ifndef CONFIG_E1000_NAPI
 	int i;
 #endif
+	uint32_t icr = E1000_READ_REG(hw, ICR);
 
-	/* this code avoids the read of ICR but has to get 1000 interrupts
-	 * at every link change event before it will notice the change */
-	if (++adapter->detect_link >= 1000) {
-		uint32_t icr = E1000_READ_REG(hw, ICR);
 #ifdef CONFIG_E1000_NAPI
-		/* read ICR disables interrupts using IAM, so keep up with our
-		 * enable/disable accounting */
-		atomic_inc(&adapter->irq_sem);
+	/* read ICR disables interrupts using IAM, so keep up with our
+	 * enable/disable accounting */
+	atomic_inc(&adapter->irq_sem);
 #endif
-		adapter->detect_link = 0;
-		if ((icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) &&
-		    (icr & E1000_ICR_INT_ASSERTED)) {
-			hw->get_link_status = 1;
-			/* 80003ES2LAN workaround--
-			* For packet buffer work-around on link down event;
-			* disable receives here in the ISR and
-			* reset adapter in watchdog
-			*/
-			if (netif_carrier_ok(netdev) &&
-			    (adapter->hw.mac_type == e1000_80003es2lan)) {
-				/* disable receives */
-				uint32_t rctl = E1000_READ_REG(hw, RCTL);
-				E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
-			}
-			/* guard against interrupt when we're going down */
-			if (!test_bit(__E1000_DOWN, &adapter->flags))
-				mod_timer(&adapter->watchdog_timer,
-				          jiffies + 1);
+	if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
+		hw->get_link_status = 1;
+		/* 80003ES2LAN workaround-- For packet buffer work-around on
+		 * link down event; disable receives here in the ISR and reset
+		 * adapter in watchdog */
+		if (netif_carrier_ok(netdev) &&
+		    (adapter->hw.mac_type == e1000_80003es2lan)) {
+			/* disable receives */
+			uint32_t rctl = E1000_READ_REG(hw, RCTL);
+			E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
 		}
-	} else {
-		E1000_WRITE_REG(hw, ICR, (0xffffffff & ~(E1000_ICR_RXSEQ |
-		                                         E1000_ICR_LSC)));
-		/* bummer we have to flush here, but things break otherwise as
-		 * some event appears to be lost or delayed and throughput
-		 * drops.  In almost all tests this flush is un-necessary */
-		E1000_WRITE_FLUSH(hw);
-#ifdef CONFIG_E1000_NAPI
-		/* Interrupt Auto-Mask (IAM)...upon writing ICR, interrupts are
-		 * masked.  No need for the IMC write, but it does mean we
-		 * should account for it ASAP. */
-		atomic_inc(&adapter->irq_sem);
-#endif
+		/* guard against interrupt when we're going down */
+		if (!test_bit(__E1000_DOWN, &adapter->flags))
+			mod_timer(&adapter->watchdog_timer, jiffies + 1);
 	}
 
 #ifdef CONFIG_E1000_NAPI
@@ -3671,7 +3796,7 @@ irqreturn_t e1000_intr_msi(int irq, void *data)
 
 	for (i = 0; i < E1000_MAX_INTR; i++)
 		if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) &
-		   !e1000_clean_tx_irq(adapter, adapter->tx_ring)))
+		   e1000_clean_tx_irq(adapter, adapter->tx_ring)))
 			break;
 
 	if (likely(adapter->itr_setting & 3))
@@ -3774,7 +3899,7 @@ e1000_intr(int irq, void *data)
 
 	for (i = 0; i < E1000_MAX_INTR; i++)
 		if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) &
-		   !e1000_clean_tx_irq(adapter, adapter->tx_ring)))
+		   e1000_clean_tx_irq(adapter, adapter->tx_ring)))
 			break;
 
 	if (likely(adapter->itr_setting & 3))
@@ -3824,7 +3949,7 @@ e1000_clean(struct net_device *poll_dev, int *budget)
 	poll_dev->quota -= work_done;
 
 	/* If no Tx and not enough Rx work done, exit the polling mode */
-	if ((!tx_cleaned && (work_done == 0)) ||
+	if ((tx_cleaned && (work_done < work_to_do)) ||
 	   !netif_running(poll_dev)) {
 quit_polling:
 		if (likely(adapter->itr_setting & 3))
@@ -3854,7 +3979,7 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
 #ifdef CONFIG_E1000_NAPI
 	unsigned int count = 0;
 #endif
-	boolean_t cleaned = FALSE;
+	boolean_t cleaned = TRUE;
 	unsigned int total_tx_bytes=0, total_tx_packets=0;
 
 	i = tx_ring->next_to_clean;
@@ -3868,11 +3993,14 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
 			cleaned = (i == eop);
 
 			if (cleaned) {
-				/* this packet count is wrong for TSO but has a
-				 * tendency to make dynamic ITR change more
-				 * towards bulk */
-				total_tx_packets++;
-				total_tx_bytes += buffer_info->skb->len;
+				struct sk_buff *skb = buffer_info->skb;
+				unsigned int segs, bytecount;
+				segs = skb_shinfo(skb)->gso_segs ?: 1;
+				/* multiply data chunks by size of headers */
+				bytecount = ((segs - 1) * skb_headlen(skb)) +
+				            skb->len;
+				total_tx_packets += segs;
+				total_tx_bytes += bytecount;
 			}
 			e1000_unmap_and_free_tx_resource(adapter, buffer_info);
 			tx_desc->upper.data = 0;
@@ -3885,7 +4013,10 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
 #ifdef CONFIG_E1000_NAPI
 #define E1000_TX_WEIGHT 64
 		/* weight of a sort for tx, to avoid endless transmit cleanup */
-		if (count++ == E1000_TX_WEIGHT) break;
+		if (count++ == E1000_TX_WEIGHT) {
+			cleaned = FALSE;
+			break;
+		}
 #endif
 	}
 
@@ -4094,8 +4225,7 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter,
 		/* code added for copybreak, this should improve
 		 * performance for small packets with large amounts
 		 * of reassembly being done in the stack */
-#define E1000_CB_LENGTH 256
-		if (length < E1000_CB_LENGTH) {
+		if (length < copybreak) {
 			struct sk_buff *new_skb =
 			    netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
 			if (new_skb) {
@@ -4253,7 +4383,7 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
 
 		/* page alloc/put takes too long and effects small packet
 		 * throughput, so unsplit small packets and save the alloc/put*/
-		if (l1 && ((length + l1) <= adapter->rx_ps_bsize0)) {
+		if (l1 && (l1 <= copybreak) && ((length + l1) <= adapter->rx_ps_bsize0)) {
 			u8 *vaddr;
 			/* there is no documentation about how to call
 			 * kmap_atomic, so we can't hold the mapping
@@ -4998,7 +5128,7 @@ e1000_suspend(struct pci_dev *pdev, pm_message_t state)
 {
 	struct net_device *netdev = pci_get_drvdata(pdev);
 	struct e1000_adapter *adapter = netdev_priv(netdev);
-	uint32_t ctrl, ctrl_ext, rctl, manc, status;
+	uint32_t ctrl, ctrl_ext, rctl, status;
 	uint32_t wufc = adapter->wol;
 #ifdef CONFIG_PM
 	int retval = 0;
@@ -5067,16 +5197,12 @@ e1000_suspend(struct pci_dev *pdev, pm_message_t state)
 		pci_enable_wake(pdev, PCI_D3cold, 0);
 	}
 
-	if (adapter->hw.mac_type >= e1000_82540 &&
-	    adapter->hw.mac_type < e1000_82571 &&
-	    adapter->hw.media_type == e1000_media_type_copper) {
-		manc = E1000_READ_REG(&adapter->hw, MANC);
-		if (manc & E1000_MANC_SMBUS_EN) {
-			manc |= E1000_MANC_ARP_EN;
-			E1000_WRITE_REG(&adapter->hw, MANC, manc);
-			pci_enable_wake(pdev, PCI_D3hot, 1);
-			pci_enable_wake(pdev, PCI_D3cold, 1);
-		}
+	e1000_release_manageability(adapter);
+
+	/* make sure adapter isn't asleep if manageability is enabled */
+	if (adapter->en_mng_pt) {
+		pci_enable_wake(pdev, PCI_D3hot, 1);
+		pci_enable_wake(pdev, PCI_D3cold, 1);
 	}
 
 	if (adapter->hw.phy_type == e1000_phy_igp_3)
@@ -5102,7 +5228,7 @@ e1000_resume(struct pci_dev *pdev)
 {
 	struct net_device *netdev = pci_get_drvdata(pdev);
 	struct e1000_adapter *adapter = netdev_priv(netdev);
-	uint32_t manc, err;
+	uint32_t err;
 
 	pci_set_power_state(pdev, PCI_D0);
 	e1000_pci_restore_state(adapter);
@@ -5122,19 +5248,13 @@ e1000_resume(struct pci_dev *pdev)
 	e1000_reset(adapter);
 	E1000_WRITE_REG(&adapter->hw, WUS, ~0);
 
+	e1000_init_manageability(adapter);
+
 	if (netif_running(netdev))
 		e1000_up(adapter);
 
 	netif_device_attach(netdev);
 
-	if (adapter->hw.mac_type >= e1000_82540 &&
-	    adapter->hw.mac_type < e1000_82571 &&
-	    adapter->hw.media_type == e1000_media_type_copper) {
-		manc = E1000_READ_REG(&adapter->hw, MANC);
-		manc &= ~(E1000_MANC_ARP_EN);
-		E1000_WRITE_REG(&adapter->hw, MANC, manc);
-	}
-
 	/* If the controller is 82573 and f/w is AMT, do not set
 	 * DRV_LOAD until the interface is up.  For all other cases,
 	 * let the f/w know that the h/w is now under the control
@@ -5235,7 +5355,8 @@ static void e1000_io_resume(struct pci_dev *pdev)
 {
 	struct net_device *netdev = pci_get_drvdata(pdev);
 	struct e1000_adapter *adapter = netdev->priv;
-	uint32_t manc, swsm;
+
+	e1000_init_manageability(adapter);
 
 	if (netif_running(netdev)) {
 		if (e1000_up(adapter)) {
@@ -5246,26 +5367,14 @@ static void e1000_io_resume(struct pci_dev *pdev)
 
 	netif_device_attach(netdev);
 
-	if (adapter->hw.mac_type >= e1000_82540 &&
-	    adapter->hw.mac_type < e1000_82571 &&
-	    adapter->hw.media_type == e1000_media_type_copper) {
-		manc = E1000_READ_REG(&adapter->hw, MANC);
-		manc &= ~(E1000_MANC_ARP_EN);
-		E1000_WRITE_REG(&adapter->hw, MANC, manc);
-	}
-
-	switch (adapter->hw.mac_type) {
-	case e1000_82573:
-		swsm = E1000_READ_REG(&adapter->hw, SWSM);
-		E1000_WRITE_REG(&adapter->hw, SWSM,
-				swsm | E1000_SWSM_DRV_LOAD);
-		break;
-	default:
-		break;
-	}
+	/* If the controller is 82573 and f/w is AMT, do not set
+	 * DRV_LOAD until the interface is up.  For all other cases,
+	 * let the f/w know that the h/w is now under the control
+	 * of the driver. */
+	if (adapter->hw.mac_type != e1000_82573 ||
+	    !e1000_check_mng_mode(&adapter->hw))
+		e1000_get_hw_control(adapter);
 
-	if (netif_running(netdev))
-		mod_timer(&adapter->watchdog_timer, jiffies);
 }
 
 /* e1000_main.c */