diff options
| author | David S. Miller <davem@davemloft.net> | 2013-02-18 12:35:42 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-18 12:35:42 -0500 |
| commit | 2f219d5fb1184bda8398e5ab9fb2910a202e2c94 (patch) | |
| tree | f5773b7c41cae27aa2ce0ec3acdbb097121dcd47 /drivers/net/ethernet/intel/e1000/e1000_main.c | |
| parent | 96b45cbd956ce83908378d87d009b05645353f22 (diff) | |
| parent | 990a3158002ff19b2d665334bc7a21a8887a123d (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next
Jeff Kirsher says:
====================
This series contains updates to e1000, e1000e, igb, igbvf and ixgbe.
The e1000, e1000e, igb and igbvf are single patch changes and the
remaining 11 patches are all against ixgbe.
The e1000 patch is a comment cleanup to align e1000 with the code
commenting style for /drivers/net. It also contains a few other white
space cleanups (i.e. fix lines over 80 char, remove unnecessary blank
lines and fix the use of tabs/spaces).
The e1000e patch from Koki (Fujitsu) adds a warning when link speed is
downgraded due to SmartSpeed.
The igb patch from Stefan (Red Hat) increases the timeout in the ethtool
offline self-test because some i350 adapters would sometimes fail the
self-test because link auto negotiation may take longer than the current
4 second timeout.
The igbvf patch from Alex is meant to address several race issues that
become possible because next_to_watch could possibly be set to a value
that shows that the descriptor is done when it is not. In order to correct
that we instead make next_to_watch a pointer that is set to NULL during
cleanup, and set to the eop_desc after the descriptor rings have been written.
The remaining patches for ixgbe are a mix of fixes and added support as well
as some cleanup. Most notably is the added support for displaying the
number of Tx/Rx channels via ethtool by Alex. Also Aurélien adds the
ability for reading data from SFP+ modules over i2c for diagnostic
monitoring.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/intel/e1000/e1000_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000/e1000_main.c | 322 |
1 files changed, 158 insertions, 164 deletions
diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c index d947e3aae1e8..8502c625dbef 100644 --- a/drivers/net/ethernet/intel/e1000/e1000_main.c +++ b/drivers/net/ethernet/intel/e1000/e1000_main.c @@ -239,7 +239,6 @@ struct net_device *e1000_get_hw_dev(struct e1000_hw *hw) * e1000_init_module is the first routine called when the driver is * loaded. All it does is register with the PCI subsystem. **/ - static int __init e1000_init_module(void) { int ret; @@ -266,7 +265,6 @@ module_init(e1000_init_module); * e1000_exit_module is called just before the driver is removed * from memory. **/ - static void __exit e1000_exit_module(void) { pci_unregister_driver(&e1000_driver); @@ -301,7 +299,6 @@ static void e1000_free_irq(struct e1000_adapter *adapter) * e1000_irq_disable - Mask off interrupt generation on the NIC * @adapter: board private structure **/ - static void e1000_irq_disable(struct e1000_adapter *adapter) { struct e1000_hw *hw = &adapter->hw; @@ -315,7 +312,6 @@ static void e1000_irq_disable(struct e1000_adapter *adapter) * e1000_irq_enable - Enable default interrupt generation settings * @adapter: board private structure **/ - static void e1000_irq_enable(struct e1000_adapter *adapter) { struct e1000_hw *hw = &adapter->hw; @@ -398,11 +394,12 @@ static void e1000_configure(struct e1000_adapter *adapter) e1000_configure_rx(adapter); /* call E1000_DESC_UNUSED which always leaves * at least 1 descriptor unused to make sure - * next_to_use != next_to_clean */ + * next_to_use != next_to_clean + */ for (i = 0; i < adapter->num_rx_queues; i++) { struct e1000_rx_ring *ring = &adapter->rx_ring[i]; adapter->alloc_rx_buf(adapter, ring, - E1000_DESC_UNUSED(ring)); + E1000_DESC_UNUSED(ring)); } } @@ -433,9 +430,7 @@ int e1000_up(struct e1000_adapter *adapter) * The phy may be powered down to save power and turn off link when the * driver is unloaded and wake on lan is not enabled (among others) * *** this routine MUST be followed by a call to e1000_reset *** - * **/ - void e1000_power_up_phy(struct e1000_adapter *adapter) { struct e1000_hw *hw = &adapter->hw; @@ -444,7 +439,8 @@ void e1000_power_up_phy(struct e1000_adapter *adapter) /* Just clear the power down bit to wake the phy back up */ if (hw->media_type == e1000_media_type_copper) { /* according to the manual, the phy will retain its - * settings across a power-down/up cycle */ + * settings across a power-down/up cycle + */ e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); mii_reg &= ~MII_CR_POWER_DOWN; e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); @@ -459,7 +455,8 @@ static void e1000_power_down_phy(struct e1000_adapter *adapter) * The PHY cannot be powered down if any of the following is true * * (a) WoL is enabled * (b) AMT is active - * (c) SoL/IDER session is active */ + * (c) SoL/IDER session is active + */ if (!adapter->wol && hw->mac_type >= e1000_82540 && hw->media_type == e1000_media_type_copper) { u16 mii_reg = 0; @@ -529,8 +526,7 @@ void e1000_down(struct e1000_adapter *adapter) e1000_irq_disable(adapter); - /* - * Setting DOWN must be after irq_disable to prevent + /* Setting DOWN must be after irq_disable to prevent * a screaming interrupt. Setting DOWN also prevents * tasks from rescheduling. */ @@ -627,14 +623,14 @@ void e1000_reset(struct e1000_adapter *adapter) * rounded up to the next 1KB and expressed in KB. Likewise, * the Rx FIFO should be large enough to accommodate at least * one full receive packet and is similarly rounded up and - * expressed in KB. */ + * expressed in KB. + */ pba = er32(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; - /* - * the tx fifo also stores 16 bytes of information about the tx + /* the Tx fifo also stores 16 bytes of information about the Tx * but don't include ethernet FCS because hardware appends it */ min_tx_space = (hw->max_frame_size + @@ -649,7 +645,8 @@ void e1000_reset(struct e1000_adapter *adapter) /* 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 */ + * 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); @@ -663,8 +660,9 @@ void e1000_reset(struct e1000_adapter *adapter) break; } - /* if short on rx space, rx wins and must trump tx - * adjustment or use Early Receive if available */ + /* if short on Rx space, Rx wins and must trump Tx + * adjustment or use Early Receive if available + */ if (pba < min_rx_space) pba = min_rx_space; } @@ -672,8 +670,7 @@ void e1000_reset(struct e1000_adapter *adapter) ew32(PBA, pba); - /* - * flow control settings: + /* flow control settings: * The high water mark must be low enough to fit one full frame * (or the size used for early receive) above it in the Rx FIFO. * Set it to the lower of: @@ -707,7 +704,8 @@ void e1000_reset(struct e1000_adapter *adapter) u32 ctrl = er32(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 */ + * can cause a loss of link at power off or driver unload + */ ctrl &= ~E1000_CTRL_SWDPIN3; ew32(CTRL, ctrl); } @@ -808,9 +806,8 @@ static int e1000_is_need_ioport(struct pci_dev *pdev) static netdev_features_t e1000_fix_features(struct net_device *netdev, netdev_features_t features) { - /* - * Since there is no support for separate rx/tx vlan accel - * enable/disable make sure tx flag is always in same state as rx. + /* Since there is no support for separate Rx/Tx vlan accel + * enable/disable make sure Tx flag is always in same state as Rx. */ if (features & NETIF_F_HW_VLAN_RX) features |= NETIF_F_HW_VLAN_TX; @@ -1012,16 +1009,14 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (err) goto err_sw_init; - /* - * there is a workaround being applied below that limits + /* there is a workaround being applied below that limits * 64-bit DMA addresses to 64-bit hardware. There are some * 32-bit adapters that Tx hang when given 64-bit DMA addresses */ pci_using_dac = 0; if ((hw->bus_type == e1000_bus_type_pcix) && !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { - /* - * according to DMA-API-HOWTO, coherent calls will always + /* according to DMA-API-HOWTO, coherent calls will always * succeed if the set call did */ dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); @@ -1099,7 +1094,8 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } /* before reading the EEPROM, reset the controller to - * put the device in a known good starting state */ + * put the device in a known good starting state + */ e1000_reset_hw(hw); @@ -1107,8 +1103,7 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (e1000_validate_eeprom_checksum(hw) < 0) { e_err(probe, "The EEPROM Checksum Is Not Valid\n"); e1000_dump_eeprom(adapter); - /* - * set MAC address to all zeroes to invalidate and temporary + /* set MAC address to all zeroes to invalidate and temporary * disable this device for the user. This blocks regular * traffic while still permitting ethtool ioctls from reaching * the hardware as well as allowing the user to run the @@ -1169,7 +1164,8 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) /* now that we have the eeprom settings, apply the special cases * where the eeprom may be wrong or the board simply won't support - * wake on lan on a particular port */ + * wake on lan on a particular port + */ switch (pdev->device) { case E1000_DEV_ID_82546GB_PCIE: adapter->eeprom_wol = 0; @@ -1177,7 +1173,8 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) case E1000_DEV_ID_82546EB_FIBER: case E1000_DEV_ID_82546GB_FIBER: /* Wake events only supported on port A for dual fiber - * regardless of eeprom setting */ + * regardless of eeprom setting + */ if (er32(STATUS) & E1000_STATUS_FUNC_1) adapter->eeprom_wol = 0; break; @@ -1270,7 +1267,6 @@ err_pci_reg: * Hot-Plug event, or because the driver is going to be removed from * memory. **/ - static void e1000_remove(struct pci_dev *pdev) { struct net_device *netdev = pci_get_drvdata(pdev); @@ -1306,7 +1302,6 @@ static void e1000_remove(struct pci_dev *pdev) * e1000_sw_init initializes the Adapter private data structure. * e1000_init_hw_struct MUST be called before this function **/ - static int e1000_sw_init(struct e1000_adapter *adapter) { adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; @@ -1337,7 +1332,6 @@ static int e1000_sw_init(struct e1000_adapter *adapter) * We allocate one ring per queue at run-time since we don't know the * number of queues at compile-time. **/ - static int e1000_alloc_queues(struct e1000_adapter *adapter) { adapter->tx_ring = kcalloc(adapter->num_tx_queues, @@ -1367,7 +1361,6 @@ static int e1000_alloc_queues(struct e1000_adapter *adapter) * handler is registered with the OS, the watchdog task is started, * and the stack is notified that the interface is ready. **/ - static int e1000_open(struct net_device *netdev) { struct e1000_adapter *adapter = netdev_priv(netdev); @@ -1401,7 +1394,8 @@ static int e1000_open(struct net_device *netdev) /* before we allocate an interrupt, we must be ready to handle it. * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt * as soon as we call pci_request_irq, so we have to setup our - * clean_rx handler before we do so. */ + * clean_rx handler before we do so. + */ e1000_configure(adapter); err = e1000_request_irq(adapter); @@ -1444,7 +1438,6 @@ err_setup_tx: * needs to be disabled. A global MAC reset is issued to stop the * hardware, and all transmit and receive resources are freed. **/ - static int e1000_close(struct net_device *netdev) { struct e1000_adapter *adapter = netdev_priv(netdev); @@ -1459,10 +1452,11 @@ static int e1000_close(struct net_device *netdev) e1000_free_all_rx_resources(adapter); /* kill manageability vlan ID if supported, but not if a vlan with - * the same ID is registered on the host OS (let 8021q kill it) */ + * the same ID is registered on the host OS (let 8021q kill it) + */ if ((hw->mng_cookie.status & - E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && - !test_bit(adapter->mng_vlan_id, adapter->active_vlans)) { + E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && + !test_bit(adapter->mng_vlan_id, adapter->active_vlans)) { e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); } @@ -1483,7 +1477,8 @@ static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, unsigned long end = begin + len; /* First rev 82545 and 82546 need to not allow any memory - * write location to cross 64k boundary due to errata 23 */ + * write location to cross 64k boundary due to errata 23 + */ if (hw->mac_type == e1000_82545 || hw->mac_type == e1000_ce4100 || hw->mac_type == e1000_82546) { @@ -1500,7 +1495,6 @@ static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, * * Return 0 on success, negative on failure **/ - static int e1000_setup_tx_resources(struct e1000_adapter *adapter, struct e1000_tx_ring *txdr) { @@ -1574,7 +1568,6 @@ setup_tx_desc_die: * * Return 0 on success, negative on failure **/ - int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) { int i, err = 0; @@ -1599,7 +1592,6 @@ int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) * * Configure the Tx unit of the MAC after a reset. **/ - static void e1000_configure_tx(struct e1000_adapter *adapter) { u64 tdba; @@ -1620,8 +1612,10 @@ static void e1000_configure_tx(struct e1000_adapter *adapter) ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); ew32(TDT, 0); ew32(TDH, 0); - adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); - adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); + adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? + E1000_TDH : E1000_82542_TDH); + adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? + E1000_TDT : E1000_82542_TDT); break; } @@ -1676,7 +1670,8 @@ static void e1000_configure_tx(struct e1000_adapter *adapter) adapter->txd_cmd |= E1000_TXD_CMD_RS; /* Cache if we're 82544 running in PCI-X because we'll - * need this to apply a workaround later in the send path. */ + * need this to apply a workaround later in the send path. + */ if (hw->mac_type == e1000_82544 && hw->bus_type == e1000_bus_type_pcix) adapter->pcix_82544 = true; @@ -1692,7 +1687,6 @@ static void e1000_configure_tx(struct e1000_adapter *adapter) * * Returns 0 on success, negative on failure **/ - static int e1000_setup_rx_resources(struct e1000_adapter *adapter, struct e1000_rx_ring *rxdr) { @@ -1771,7 +1765,6 @@ setup_rx_desc_die: * * Return 0 on success, negative on failure **/ - int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) { int i, err = 0; @@ -1840,7 +1833,8 @@ static void e1000_setup_rctl(struct e1000_adapter *adapter) /* This is useful for sniffing bad packets. */ if (adapter->netdev->features & NETIF_F_RXALL) { /* UPE and MPE will be handled by normal PROMISC logic - * in e1000e_set_rx_mode */ + * in e1000e_set_rx_mode + */ rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ E1000_RCTL_BAM | /* RX All Bcast Pkts */ E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ @@ -1862,7 +1856,6 @@ static void e1000_setup_rctl(struct e1000_adapter *adapter) * * Configure the Rx unit of the MAC after a reset. **/ - static void e1000_configure_rx(struct e1000_adapter *adapter) { u64 rdba; @@ -1895,7 +1888,8 @@ static void e1000_configure_rx(struct e1000_adapter *adapter) } /* Setup the HW Rx Head and Tail Descriptor Pointers and - * the Base and Length of the Rx Descriptor Ring */ + * the Base and Length of the Rx Descriptor Ring + */ switch (adapter->num_rx_queues) { case 1: default: @@ -1905,8 +1899,10 @@ static void e1000_configure_rx(struct e1000_adapter *adapter) ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); ew32(RDT, 0); ew32(RDH, 0); - adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); - adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); + adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? + E1000_RDH : E1000_82542_RDH); + adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? + E1000_RDT : E1000_82542_RDT); break; } @@ -1932,7 +1928,6 @@ static void e1000_configure_rx(struct e1000_adapter *adapter) * * Free all transmit software resources **/ - static void e1000_free_tx_resources(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring) { @@ -1955,7 +1950,6 @@ static void e1000_free_tx_resources(struct e1000_adapter *adapter, * * Free all transmit software resources **/ - void e1000_free_all_tx_resources(struct e1000_adapter *adapter) { int i; @@ -1990,7 +1984,6 @@ static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, * @adapter: board private structure * @tx_ring: ring to be cleaned **/ - static void e1000_clean_tx_ring(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring) { @@ -2026,7 +2019,6 @@ static void e1000_clean_tx_ring(struct e1000_adapter *adapter, * e1000_clean_all_tx_rings - Free Tx Buffers for all queues * @adapter: board private structure **/ - static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) { int i; @@ -2042,7 +2034,6 @@ static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) * * Free all receive software resources **/ - static void e1000_free_rx_resources(struct e1000_adapter *adapter, struct e1000_rx_ring *rx_ring) { @@ -2065,7 +2056,6 @@ static void e1000_free_rx_resources(struct e1000_adapter *adapter, * * Free all receive software resources **/ - void e1000_free_all_rx_resources(struct e1000_adapter *adapter) { int i; @@ -2079,7 +2069,6 @@ void e1000_free_all_rx_resources(struct e1000_adapter *adapter) * @adapter: board private structure * @rx_ring: ring to free buffers from **/ - static void e1000_clean_rx_ring(struct e1000_adapter *adapter, struct e1000_rx_ring *rx_ring) { @@ -2138,7 +2127,6 @@ static void e1000_clean_rx_ring(struct e1000_adapter *adapter, * e1000_clean_all_rx_rings - Free Rx Buffers for all queues * @adapter: board private structure **/ - static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) { int i; @@ -2198,7 +2186,6 @@ static void e1000_leave_82542_rst(struct e1000_adapter *adapter) * * Returns 0 on success, negative on failure **/ - static int e1000_set_mac(struct net_device *netdev, void *p) { struct e1000_adapter *adapter = netdev_priv(netdev); @@ -2233,7 +2220,6 @@ static int e1000_set_mac(struct net_device *netdev, void *p) * responsible for configuring the hardware for proper unicast, multicast, * promiscuous mode, and all-multi behavior. **/ - static void e1000_set_rx_mode(struct net_device *netdev) { struct e1000_adapter *adapter = netdev_priv(netdev); @@ -2317,10 +2303,10 @@ static void e1000_set_rx_mode(struct net_device *netdev) } /* write the hash table completely, write from bottom to avoid - * both stupid write combining chipsets, and flushing each write */ + * both stupid write combining chipsets, and flushing each write + */ for (i = mta_reg_count - 1; i >= 0 ; i--) { - /* - * If we are on an 82544 has an errata where writing odd + /* If we are on an 82544 has an errata where writing odd * offsets overwrites the previous even offset, but writing * backwards over the range solves the issue by always * writing the odd offset first @@ -2458,8 +2444,8 @@ static void e1000_watchdog(struct work_struct *work) bool txb2b = true; /* update snapshot of PHY registers on LSC */ e1000_get_speed_and_duplex(hw, - &adapter->link_speed, - &adapter->link_duplex); + &adapter->link_speed, + &adapter->link_duplex); ctrl = er32(CTRL); pr_info("%s NIC Link is Up %d Mbps %s, " @@ -2533,7 +2519,8 @@ link_up: /* We've lost link, so the controller stops DMA, * but we've got queued Tx work that's never going * to get done, so reset controller to flush Tx. - * (Do the reset outside of interrupt context). */ + * (Do the reset outside of interrupt context). + */ adapter->tx_timeout_count++; schedule_work(&adapter->reset_task); /* exit immediately since reset is imminent */ @@ -2543,8 +2530,7 @@ link_up: /* Simple mode for Interrupt Throttle Rate (ITR) */ if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) { - /* - * Symmetric Tx/Rx gets a reduced ITR=2000; + /* Symmetric Tx/Rx gets a reduced ITR=2000; * Total asymmetrical Tx or Rx gets ITR=8000; * everyone else is between 2000-8000. */ @@ -2659,18 +2645,16 @@ static void e1000_set_itr(struct e1000_adapter *adapter) goto set_itr_now; } - adapter->tx_itr = e1000_update_itr(adapter, - adapter->tx_itr, - adapter->total_tx_packets, - adapter->total_tx_bytes); + adapter->tx_itr = e1000_update_itr(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); + 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; @@ -2696,10 +2680,11 @@ set_itr_now: if (new_itr != adapter->itr) { /* this attempts to bias the interrupt rate towards Bulk * by adding intermediate steps when interrupt rate is - * increasing */ + * increasing + */ new_itr = new_itr > adapter->itr ? - min(adapter->itr + (new_itr >> 2), new_itr) : - new_itr; + min(adapter->itr + (new_itr >> 2), new_itr) : + new_itr; adapter->itr = new_itr; ew32(ITR, 1000000000 / (new_itr * 256)); } @@ -2861,7 +2846,8 @@ static int e1000_tx_map(struct e1000_adapter *adapter, /* 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 - * DMA'd to the controller */ + * DMA'd to the controller + */ if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) { tx_ring->last_tx_tso = false; @@ -2869,7 +2855,8 @@ static int e1000_tx_map(struct e1000_adapter *adapter, } /* Workaround for premature desc write-backs - * in TSO mode. Append 4-byte sentinel desc */ + * in TSO mode. Append 4-byte sentinel desc + */ if (unlikely(mss && !nr_frags && size == len && size > 8)) size -= 4; /* work-around for errata 10 and it applies @@ -2882,7 +2869,8 @@ static int e1000_tx_map(struct e1000_adapter *adapter, size = 2015; /* Workaround for potential 82544 hang in PCI-X. Avoid - * terminating buffers within evenly-aligned dwords. */ + * terminating buffers within evenly-aligned dwords. + */ if (unlikely(adapter->pcix_82544 && !((unsigned long)(skb->data + offset + size - 1) & 4) && size > 4)) @@ -2894,7 +2882,7 @@ static int e1000_tx_map(struct e1000_adapter *adapter, buffer_info->mapped_as_page = false; buffer_info->dma = dma_map_single(&pdev->dev, skb->data + offset, - size, DMA_TO_DEVICE); + size, DMA_TO_DEVICE); if (dma_mapping_error(&pdev->dev, buffer_info->dma)) goto dma_error; buffer_info->next_to_watch = i; @@ -2925,12 +2913,15 @@ static int e1000_tx_map(struct e1000_adapter *adapter, buffer_info = &tx_ring->buffer_info[i]; size = min(len, max_per_txd); /* 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)) + * in TSO mode. Append 4-byte sentinel desc + */ + if (unlikely(mss && f == (nr_frags-1) && + size == len && size > 8)) size -= 4; /* Workaround for potential 82544 hang in PCI-X. * Avoid terminating buffers within evenly-aligned - * dwords. */ + * dwords. + */ bufend = (unsigned long) page_to_phys(skb_frag_page(frag)); bufend += offset + size - 1; @@ -2994,7 +2985,7 @@ static void e1000_tx_queue(struct e1000_adapter *adapter, if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | - E1000_TXD_CMD_TSE; + E1000_TXD_CMD_TSE; txd_upper |= E1000_TXD_POPTS_TXSM << 8; if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) @@ -3035,13 +3026,15 @@ static void e1000_tx_queue(struct e1000_adapter *adapter, /* Force memory writes to complete before letting h/w * know there are new descriptors to fetch. (Only * applicable for weak-ordered memory model archs, - * such as IA-64). */ + * such as IA-64). + */ wmb(); tx_ring->next_to_use = i; writel(i, hw->hw_addr + tx_ring->tdt); /* we need this if more than one processor can write to our tail - * at a time, it syncronizes IO on IA64/Altix systems */ + * at a time, it synchronizes IO on IA64/Altix systems + */ mmiowb(); } @@ -3090,11 +3083,13 @@ static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) netif_stop_queue(netdev); /* Herbert's original patch had: * smp_mb__after_netif_stop_queue(); - * but since that doesn't exist yet, just open code it. */ + * but since that doesn't exist yet, just open code it. + */ smp_mb(); /* We need to check again in a case another CPU has just - * made room available. */ + * made room available. + */ if (likely(E1000_DESC_UNUSED(tx_ring) < size)) return -EBUSY; @@ -3105,7 +3100,7 @@ static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) } static int e1000_maybe_stop_tx(struct net_device *netdev, - struct e1000_tx_ring *tx_ring, int size) + struct e1000_tx_ring *tx_ring, int size) { if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) return 0; @@ -3129,10 +3124,11 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, int tso; unsigned int f; - /* This goes back to the question of how to logically map a tx queue + /* This goes back to the question of how to logically map a Tx queue * to a flow. Right now, performance is impacted slightly negatively - * if using multiple tx queues. If the stack breaks away from a - * single qdisc implementation, we can look at this again. */ + * if using multiple Tx queues. If the stack breaks away from a + * single qdisc implementation, we can look at this again. + */ tx_ring = adapter->tx_ring; if (unlikely(skb->len <= 0)) { @@ -3157,7 +3153,8 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, * initiating the DMA for each buffer. The calc is: * 4 = ceil(buffer len/mss). To make sure we don't * overrun the FIFO, adjust the max buffer len if mss - * drops. */ + * drops. + */ if (mss) { u8 hdr_len; max_per_txd = min(mss << 2, max_per_txd); @@ -3173,8 +3170,10 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, * 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_pointer(skb) - 1) & 4) + * into the next dword + */ + if ((unsigned long)(skb_tail_pointer(skb) - 1) + & 4) break; /* fall through */ pull_size = min((unsigned int)4, skb->data_len); @@ -3222,7 +3221,8 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, count += nr_frags; /* need: count + 2 desc gap to keep tail from touching - * head, otherwise try next time */ + * head, otherwise try next time + */ if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) return NETDEV_TX_BUSY; @@ -3261,7 +3261,7 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, tx_flags |= E1000_TX_FLAGS_NO_FCS; count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, - nr_frags, mss); + nr_frags, mss); if (count) { netdev_sent_queue(netdev, skb->len); @@ -3363,9 +3363,7 @@ static void e1000_dump(struct e1000_adapter *adapter) /* Print Registers */ e1000_regdump(adapter); - /* - * transmit dump - */ + /* transmit dump */ pr_info("TX Desc ring0 dump\n"); /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) @@ -3426,9 +3424,7 @@ static void e1000_dump(struct e1000_adapter *adapter) } rx_ring_summary: - /* - * receive dump - */ + /* receive dump */ pr_info("\nRX Desc ring dump\n"); /* Legacy Receive Descriptor Format @@ -3493,7 +3489,6 @@ exit: * e1000_tx_timeout - Respond to a Tx Hang * @netdev: network interface device structure **/ - static void e1000_tx_timeout(struct net_device *netdev) { struct e1000_adapter *adapter = netdev_priv(netdev); @@ -3521,7 +3516,6 @@ static void e1000_reset_task(struct work_struct *work) * Returns the address of the device statistics structure. * The statistics are actually updated from the watchdog. **/ - static struct net_device_stats *e1000_get_stats(struct net_device *netdev) { /* only return the current stats */ @@ -3535,7 +3529,6 @@ static struct net_device_stats *e1000_get_stats(struct net_device *netdev) * * Returns 0 on success, negative on failure **/ - static int e1000_change_mtu(struct net_device *netdev, int new_mtu) { struct e1000_adapter *adapter = netdev_priv(netdev); @@ -3572,8 +3565,9 @@ static int e1000_change_mtu(struct net_device *netdev, int new_mtu) * means we reserve 2 more, this pushes us to allocate from the next * larger slab size. * i.e. RXBUFFER_2048 --> size-4096 slab - * however with the new *_jumbo_rx* routines, jumbo receives will use - * fragmented skbs */ + * however with the new *_jumbo_rx* routines, jumbo receives will use + * fragmented skbs + */ if (max_frame <= E1000_RXBUFFER_2048) adapter->rx_buffer_len = E1000_RXBUFFER_2048; @@ -3608,7 +3602,6 @@ static int e1000_change_mtu(struct net_device *netdev, int new_mtu) * e1000_update_stats - Update the board statistics counters * @adapter: board private structure **/ - void e1000_update_stats(struct e1000_adapter *adapter) { struct net_device *netdev = adapter->netdev; @@ -3619,8 +3612,7 @@ void e1000_update_stats(struct e1000_adapter *adapter) #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF - /* - * Prevent stats update while adapter is being reset, or if the pci + /* Prevent stats update while adapter is being reset, or if the pci * connection is down. */ if (adapter->link_speed == 0) @@ -3710,7 +3702,8 @@ void e1000_update_stats(struct e1000_adapter *adapter) /* Rx Errors */ /* RLEC on some newer hardware can be incorrect so build - * our own version based on RUC and ROC */ + * our own version based on RUC and ROC + */ netdev->stats.rx_errors = adapter->stats.rxerrc + adapter->stats.crcerrs + adapter->stats.algnerrc + adapter->stats.ruc + adapter->stats.roc + @@ -3764,7 +3757,6 @@ void e1000_update_stats(struct e1000_adapter *adapter) * @irq: interrupt number * @data: pointer to a network interface device structure **/ - static irqreturn_t e1000_intr(int irq, void *data) { struct net_device *netdev = data; @@ -3775,8 +3767,7 @@ static irqreturn_t e1000_intr(int irq, void *data) if (unlikely((!icr))) return IRQ_NONE; /* Not our interrupt */ - /* - * we might have caused the interrupt, but the above + /* we might have caused the interrupt, but the above * read cleared it, and just in case the driver is * down there is nothing to do so return handled */ @@ -3802,7 +3793,8 @@ static irqreturn_t e1000_intr(int irq, void *data) __napi_schedule(&adapter->napi); } else { /* this really should not happen! if it does it is basically a - * bug, but not a hard error, so enable ints and continue */ + * bug, but not a hard error, so enable ints and continue + */ if (!test_bit(__E1000_DOWN, &adapter->flags)) e1000_irq_enable(adapter); } @@ -3816,7 +3808,8 @@ static irqreturn_t e1000_intr(int irq, void *data) **/ static int e1000_clean(struct napi_struct *napi, int budget) { - struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); + struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, + napi); int tx_clean_complete = 0, work_done = 0; tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); @@ -3907,11 +3900,12 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, if (adapter->detect_tx_hung) { /* Detect a transmit hang in hardware, this serializes the - * check with the clearing of time_stamp and movement of i */ + * check with the clearing of time_stamp and movement of i + */ adapter->detect_tx_hung = false; if (tx_ring->buffer_info[eop].time_stamp && time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + - (adapter->tx_timeout_factor * HZ)) && + (adapter->tx_timeout_factor * HZ)) && !(er32(STATUS) & E1000_STATUS_TXOFF)) { /* detected Tx unit hang */ @@ -3954,7 +3948,6 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, * @csum: receive descriptor csum field * @sk_buff: socket buffer with received data **/ - static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, u32 csum, struct sk_buff *skb) { @@ -3990,7 +3983,7 @@ static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, * e1000_consume_page - helper function **/ static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, - u16 length) + u16 length) { bi->page = NULL; skb->len += length; @@ -4086,11 +4079,11 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, if (TBI_ACCEPT(hw, status, rx_desc->errors, length, last_byte)) { spin_lock_irqsave(&adapter->stats_lock, - irq_flags); + irq_flags); e1000_tbi_adjust_stats(hw, &adapter->stats, length, mapped); spin_unlock_irqrestore(&adapter->stats_lock, - irq_flags); + irq_flags); length--; } else { if (netdev->features & NETIF_F_RXALL) @@ -4098,7 +4091,8 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, /* recycle both page and skb */ buffer_info->skb = skb; /* an error means any chain goes out the window - * too */ + * too + */ if (rx_ring->rx_skb_top) dev_kfree_skb(rx_ring->rx_skb_top); rx_ring->rx_skb_top = NULL; @@ -4114,7 +4108,7 @@ process_skb: /* this is the beginning of a chain */ rxtop = skb; skb_fill_page_desc(rxtop, 0, buffer_info->page, - 0, length); + 0, length); } else { /* this is the middle of a chain */ skb_fill_page_desc(rxtop, @@ -4132,38 +4126,42 @@ process_skb: skb_shinfo(rxtop)->nr_frags, buffer_info->page, 0, length); /* re-use the current skb, we only consumed the - * page */ + * page + */ buffer_info->skb = skb; skb = rxtop; rxtop = NULL; e1000_consume_page(buffer_info, skb, length); } else { /* no chain, got EOP, this buf is the packet - * copybreak to save the put_page/alloc_page */ + * copybreak to save the put_page/alloc_page + */ if (length <= copybreak && skb_tailroom(skb) >= length) { u8 *vaddr; vaddr = kmap_atomic(buffer_info->page); - memcpy(skb_tail_pointer(skb), vaddr, length); + memcpy(skb_tail_pointer(skb), vaddr, + length); kunmap_atomic(vaddr); /* re-use the page, so don't erase - * buffer_info->page */ + * buffer_info->page + */ skb_put(skb, length); } else { skb_fill_page_desc(skb, 0, - buffer_info->page, 0, - length); + buffer_info->page, 0, + length); e1000_consume_page(buffer_info, skb, - length); + length); } } } /* Receive Checksum Offload XXX recompute due to CRC strip? */ e1000_rx_checksum(adapter, - (u32)(status) | - ((u32)(rx_desc->errors) << 24), - le16_to_cpu(rx_desc->csum), skb); + (u32)(status) | + ((u32)(rx_desc->errors) << 24), + le16_to_cpu(rx_desc->csum), skb); total_rx_bytes += (skb->len - 4); /* don't count FCS */ if (likely(!(netdev->features & NETIF_F_RXFCS))) @@ -4205,8 +4203,7 @@ next_desc: return cleaned; } -/* - * this should improve performance for small packets with large amounts +/* this should improve performance for small packets with large amounts * of reassembly being done in the stack */ static void e1000_check_copybreak(struct net_device *netdev, @@ -4310,9 +4307,9 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, last_byte)) { spin_lock_irqsave(&adapter->stats_lock, flags); e1000_tbi_adjust_stats(hw, &adapter->stats, - length, skb->data); + length, skb->data); spin_unlock_irqrestore(&adapter->stats_lock, - flags); + flags); length--; } else { if (netdev->features & NETIF_F_RXALL) @@ -4377,10 +4374,9 @@ next_desc: * @rx_ring: pointer to receive ring structure * @cleaned_count: number of buffers to allocate this pass **/ - static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, - struct e1000_rx_ring *rx_ring, int cleaned_count) + struct e1000_rx_ring *rx_ring, int cleaned_count) { struct net_device *netdev = adapter->netdev; struct pci_dev *pdev = adapter->pdev; @@ -4421,7 +4417,7 @@ check_page: if (!buffer_info->dma) { buffer_info->dma = dma_map_page(&pdev->dev, - buffer_info->page, 0, + buffer_info->page, 0, buffer_info->length, DMA_FROM_DEVICE); if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { @@ -4451,7 +4447,8 @@ check_page: /* Force memory writes to complete before letting h/w * know there are new descriptors to fetch. (Only * applicable for weak-ordered memory model archs, - * such as IA-64). */ + * such as IA-64). + */ wmb(); writel(i, adapter->hw.hw_addr + rx_ring->rdt); } @@ -4461,7 +4458,6 @@ check_page: * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended * @adapter: address of board private structure **/ - static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, struct e1000_rx_ring *rx_ring, int cleaned_count) @@ -4532,8 +4528,7 @@ map_skb: break; /* while !buffer_info->skb */ } - /* - * XXX if it was allocated cleanly it will never map to a + /* XXX if it was allocated cleanly it will never map to a * boundary crossing */ @@ -4571,7 +4566,8 @@ map_skb: /* Force memory writes to complete before letting h/w * know there are new descriptors to fetch. (Only * applicable for weak-ordered memory model archs, - * such as IA-64). */ + * such as IA-64). + */ wmb(); writel(i, hw->hw_addr + rx_ring->rdt); } @@ -4581,7 +4577,6 @@ map_skb: * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. * @adapter: **/ - static void e1000_smartspeed(struct e1000_adapter *adapter) { struct e1000_hw *hw = &adapter->hw; @@ -4594,7 +4589,8 @@ static void e1000_smartspeed(struct e1000_adapter *adapter) if (adapter->smartspeed == 0) { /* If Master/Slave config fault is asserted twice, - * we assume back-to-back */ + * we assume back-to-back + */ e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); @@ -4607,7 +4603,7 @@ static void e1000_smartspeed(struct e1000_adapter *adapter) adapter->smartspeed++; if (!e1000_phy_setup_autoneg(hw) && !e1000_read_phy_reg(hw, PHY_CTRL, - &phy_ctrl)) { + &phy_ctrl)) { phy_ctrl |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG); e1000_write_phy_reg(hw, PHY_CTRL, @@ -4638,7 +4634,6 @@ static void e1000_smartspeed(struct e1000_adapter *adapter) * @ifreq: * @cmd: **/ - static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) { switch (cmd) { @@ -4657,7 +4652,6 @@ static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) * @ifreq: * @cmd: **/ - static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) { @@ -4919,7 +4913,8 @@ int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx) hw->autoneg = 0; /* Make sure dplx is at most 1 bit and lsb of speed is not set - * for the switch() below to work */ + * for the switch() below to work + */ if ((spd & 1) || (dplx & ~1)) goto err_inval; @@ -5122,8 +5117,7 @@ static void e1000_shutdown(struct pci_dev *pdev) } #ifdef CONFIG_NET_POLL_CONTROLLER -/* - * Polling 'interrupt' - used by things like netconsole to send skbs +/* Polling 'interrupt' - used by things like netconsole to send skbs * without having to re-enable interrupts. It's not called while * the interrupt routine is executing. */ |
