/*******************************************************************************
Intel PRO/10GbE Linux driver
- Copyright(c) 1999 - 2006 Intel Corporation.
+ Copyright(c) 1999 - 2008 Intel Corporation.
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
char ixgb_driver_name[] = "ixgb";
static char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver";
-#ifndef CONFIG_IXGB_NAPI
-#define DRIVERNAPI
-#else
#define DRIVERNAPI "-NAPI"
-#endif
-#define DRV_VERSION "1.0.112-k2"DRIVERNAPI
-char ixgb_driver_version[] = DRV_VERSION;
-static char ixgb_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
+#define DRV_VERSION "1.0.135-k2" DRIVERNAPI
+const char ixgb_driver_version[] = DRV_VERSION;
+static const char ixgb_copyright[] = "Copyright (c) 1999-2008 Intel Corporation.";
+
+#define IXGB_CB_LENGTH 256
+static unsigned int copybreak __read_mostly = IXGB_CB_LENGTH;
+module_param(copybreak, uint, 0644);
+MODULE_PARM_DESC(copybreak,
+ "Maximum size of packet that is copied to a new buffer on receive");
/* ixgb_pci_tbl - PCI Device ID Table
*
* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
* Class, Class Mask, private data (not used) }
*/
-static struct pci_device_id ixgb_pci_tbl[] = {
+static DEFINE_PCI_DEVICE_TABLE(ixgb_pci_tbl) = {
{INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_CX4,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_SR,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_LR,
+ {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_LR,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
/* required last entry */
MODULE_DEVICE_TABLE(pci, ixgb_pci_tbl);
/* Local Function Prototypes */
-
-int ixgb_up(struct ixgb_adapter *adapter);
-void ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog);
-void ixgb_reset(struct ixgb_adapter *adapter);
-int ixgb_setup_tx_resources(struct ixgb_adapter *adapter);
-int ixgb_setup_rx_resources(struct ixgb_adapter *adapter);
-void ixgb_free_tx_resources(struct ixgb_adapter *adapter);
-void ixgb_free_rx_resources(struct ixgb_adapter *adapter);
-void ixgb_update_stats(struct ixgb_adapter *adapter);
-
static int ixgb_init_module(void);
static void ixgb_exit_module(void);
static int ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
static void ixgb_clean_rx_ring(struct ixgb_adapter *adapter);
static void ixgb_set_multi(struct net_device *netdev);
static void ixgb_watchdog(unsigned long data);
-static int ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
+static netdev_tx_t ixgb_xmit_frame(struct sk_buff *skb,
+ struct net_device *netdev);
static struct net_device_stats *ixgb_get_stats(struct net_device *netdev);
static int ixgb_change_mtu(struct net_device *netdev, int new_mtu);
static int ixgb_set_mac(struct net_device *netdev, void *p);
-static irqreturn_t ixgb_intr(int irq, void *data, struct pt_regs *regs);
-static boolean_t ixgb_clean_tx_irq(struct ixgb_adapter *adapter);
-
-#ifdef CONFIG_IXGB_NAPI
-static int ixgb_clean(struct net_device *netdev, int *budget);
-static boolean_t ixgb_clean_rx_irq(struct ixgb_adapter *adapter,
- int *work_done, int work_to_do);
-#else
-static boolean_t ixgb_clean_rx_irq(struct ixgb_adapter *adapter);
-#endif
-static void ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter);
-void ixgb_set_ethtool_ops(struct net_device *netdev);
+static irqreturn_t ixgb_intr(int irq, void *data);
+static bool ixgb_clean_tx_irq(struct ixgb_adapter *adapter);
+
+static int ixgb_clean(struct napi_struct *, int);
+static bool ixgb_clean_rx_irq(struct ixgb_adapter *, int *, int);
+static void ixgb_alloc_rx_buffers(struct ixgb_adapter *, int);
+
static void ixgb_tx_timeout(struct net_device *dev);
-static void ixgb_tx_timeout_task(struct net_device *dev);
+static void ixgb_tx_timeout_task(struct work_struct *work);
+
static void ixgb_vlan_rx_register(struct net_device *netdev,
- struct vlan_group *grp);
-static void ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
-static void ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
+ struct vlan_group *grp);
+static void ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid);
+static void ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
static void ixgb_restore_vlan(struct ixgb_adapter *adapter);
#ifdef CONFIG_NET_POLL_CONTROLLER
#endif
static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev,
- enum pci_channel_state state);
+ enum pci_channel_state state);
static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev);
static void ixgb_io_resume (struct pci_dev *pdev);
-/* Exported from other modules */
-extern void ixgb_check_options(struct ixgb_adapter *adapter);
-
static struct pci_error_handlers ixgb_err_handler = {
.error_detected = ixgb_io_error_detected,
.slot_reset = ixgb_io_slot_reset,
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
-/* some defines for controlling descriptor fetches in h/w */
-#define RXDCTL_WTHRESH_DEFAULT 15 /* chip writes back at this many or RXT0 */
-#define RXDCTL_PTHRESH_DEFAULT 0 /* chip considers prefech below
- * this */
-#define RXDCTL_HTHRESH_DEFAULT 0 /* chip will only prefetch if tail
- * is pushed this many descriptors
- * from head */
-
/**
* ixgb_init_module - Driver Registration Routine
*
static void
ixgb_irq_disable(struct ixgb_adapter *adapter)
{
- atomic_inc(&adapter->irq_sem);
IXGB_WRITE_REG(&adapter->hw, IMC, ~0);
IXGB_WRITE_FLUSH(&adapter->hw);
synchronize_irq(adapter->pdev->irq);
static void
ixgb_irq_enable(struct ixgb_adapter *adapter)
{
- if(atomic_dec_and_test(&adapter->irq_sem)) {
- IXGB_WRITE_REG(&adapter->hw, IMS,
- IXGB_INT_RXT0 | IXGB_INT_RXDMT0 | IXGB_INT_TXDW |
- IXGB_INT_LSC);
- IXGB_WRITE_FLUSH(&adapter->hw);
- }
+ u32 val = IXGB_INT_RXT0 | IXGB_INT_RXDMT0 |
+ IXGB_INT_TXDW | IXGB_INT_LSC;
+ if (adapter->hw.subsystem_vendor_id == SUN_SUBVENDOR_ID)
+ val |= IXGB_INT_GPI0;
+ IXGB_WRITE_REG(&adapter->hw, IMS, val);
+ IXGB_WRITE_FLUSH(&adapter->hw);
}
int
ixgb_up(struct ixgb_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
- int err;
+ int err, irq_flags = IRQF_SHARED;
int max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
struct ixgb_hw *hw = &adapter->hw;
ixgb_configure_tx(adapter);
ixgb_setup_rctl(adapter);
ixgb_configure_rx(adapter);
- ixgb_alloc_rx_buffers(adapter);
+ ixgb_alloc_rx_buffers(adapter, IXGB_DESC_UNUSED(&adapter->rx_ring));
/* disable interrupts and get the hardware into a known state */
IXGB_WRITE_REG(&adapter->hw, IMC, 0xffffffff);
-#ifdef CONFIG_PCI_MSI
- {
- boolean_t pcix = (IXGB_READ_REG(&adapter->hw, STATUS) &
- IXGB_STATUS_PCIX_MODE) ? TRUE : FALSE;
- adapter->have_msi = TRUE;
-
- if (!pcix)
- adapter->have_msi = FALSE;
- else if((err = pci_enable_msi(adapter->pdev))) {
- DPRINTK(PROBE, ERR,
- "Unable to allocate MSI interrupt Error: %d\n", err);
- adapter->have_msi = FALSE;
+ /* only enable MSI if bus is in PCI-X mode */
+ if (IXGB_READ_REG(&adapter->hw, STATUS) & IXGB_STATUS_PCIX_MODE) {
+ err = pci_enable_msi(adapter->pdev);
+ if (!err) {
+ adapter->have_msi = 1;
+ irq_flags = 0;
+ }
/* proceed to try to request regular interrupt */
}
- }
-#endif
- if((err = request_irq(adapter->pdev->irq, &ixgb_intr,
- IRQF_SHARED | IRQF_SAMPLE_RANDOM,
- netdev->name, netdev))) {
+ err = request_irq(adapter->pdev->irq, ixgb_intr, irq_flags,
+ netdev->name, netdev);
+ if (err) {
+ if (adapter->have_msi)
+ pci_disable_msi(adapter->pdev);
DPRINTK(PROBE, ERR,
"Unable to allocate interrupt Error: %d\n", err);
return err;
}
- if((hw->max_frame_size != max_frame) ||
+ if ((hw->max_frame_size != max_frame) ||
(hw->max_frame_size !=
(IXGB_READ_REG(hw, MFS) >> IXGB_MFS_SHIFT))) {
IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT);
- if(hw->max_frame_size >
+ if (hw->max_frame_size >
IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) {
- uint32_t ctrl0 = IXGB_READ_REG(hw, CTRL0);
+ u32 ctrl0 = IXGB_READ_REG(hw, CTRL0);
- if(!(ctrl0 & IXGB_CTRL0_JFE)) {
+ if (!(ctrl0 & IXGB_CTRL0_JFE)) {
ctrl0 |= IXGB_CTRL0_JFE;
IXGB_WRITE_REG(hw, CTRL0, ctrl0);
}
}
}
- mod_timer(&adapter->watchdog_timer, jiffies);
+ clear_bit(__IXGB_DOWN, &adapter->flags);
-#ifdef CONFIG_IXGB_NAPI
- netif_poll_enable(netdev);
-#endif
+ napi_enable(&adapter->napi);
ixgb_irq_enable(adapter);
+ netif_wake_queue(netdev);
+
+ mod_timer(&adapter->watchdog_timer, jiffies);
+
return 0;
}
void
-ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog)
+ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog)
{
struct net_device *netdev = adapter->netdev;
+ /* prevent the interrupt handler from restarting watchdog */
+ set_bit(__IXGB_DOWN, &adapter->flags);
+
+ napi_disable(&adapter->napi);
+ /* waiting for NAPI to complete can re-enable interrupts */
ixgb_irq_disable(adapter);
free_irq(adapter->pdev->irq, netdev);
-#ifdef CONFIG_PCI_MSI
- if(adapter->have_msi == TRUE)
+
+ if (adapter->have_msi)
pci_disable_msi(adapter->pdev);
-#endif
- if(kill_watchdog)
+ if (kill_watchdog)
del_timer_sync(&adapter->watchdog_timer);
-#ifdef CONFIG_IXGB_NAPI
- netif_poll_disable(netdev);
-#endif
+
adapter->link_speed = 0;
adapter->link_duplex = 0;
netif_carrier_off(netdev);
void
ixgb_reset(struct ixgb_adapter *adapter)
{
+ struct ixgb_hw *hw = &adapter->hw;
- ixgb_adapter_stop(&adapter->hw);
- if(!ixgb_init_hw(&adapter->hw))
+ ixgb_adapter_stop(hw);
+ if (!ixgb_init_hw(hw))
DPRINTK(PROBE, ERR, "ixgb_init_hw failed.\n");
+
+ /* restore frame size information */
+ IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT);
+ if (hw->max_frame_size >
+ IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) {
+ u32 ctrl0 = IXGB_READ_REG(hw, CTRL0);
+ if (!(ctrl0 & IXGB_CTRL0_JFE)) {
+ ctrl0 |= IXGB_CTRL0_JFE;
+ IXGB_WRITE_REG(hw, CTRL0, ctrl0);
+ }
+ }
}
+static const struct net_device_ops ixgb_netdev_ops = {
+ .ndo_open = ixgb_open,
+ .ndo_stop = ixgb_close,
+ .ndo_start_xmit = ixgb_xmit_frame,
+ .ndo_get_stats = ixgb_get_stats,
+ .ndo_set_multicast_list = ixgb_set_multi,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = ixgb_set_mac,
+ .ndo_change_mtu = ixgb_change_mtu,
+ .ndo_tx_timeout = ixgb_tx_timeout,
+ .ndo_vlan_rx_register = ixgb_vlan_rx_register,
+ .ndo_vlan_rx_add_vid = ixgb_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = ixgb_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = ixgb_netpoll,
+#endif
+};
+
/**
* ixgb_probe - Device Initialization Routine
* @pdev: PCI device information struct
**/
static int __devinit
-ixgb_probe(struct pci_dev *pdev,
- const struct pci_device_id *ent)
+ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct net_device *netdev = NULL;
struct ixgb_adapter *adapter;
static int cards_found = 0;
- unsigned long mmio_start;
- int mmio_len;
int pci_using_dac;
int i;
int err;
- if((err = pci_enable_device(pdev)))
+ err = pci_enable_device(pdev);
+ if (err)
return err;
- if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) &&
- !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) {
+ if (!(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) &&
+ !(err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))) {
pci_using_dac = 1;
} else {
- if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) ||
- (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) {
+ if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) ||
+ (err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))) {
printk(KERN_ERR
"ixgb: No usable DMA configuration, aborting\n");
goto err_dma_mask;
pci_using_dac = 0;
}
- if((err = pci_request_regions(pdev, ixgb_driver_name)))
+ err = pci_request_regions(pdev, ixgb_driver_name);
+ if (err)
goto err_request_regions;
pci_set_master(pdev);
netdev = alloc_etherdev(sizeof(struct ixgb_adapter));
- if(!netdev) {
+ if (!netdev) {
err = -ENOMEM;
goto err_alloc_etherdev;
}
- SET_MODULE_OWNER(netdev);
SET_NETDEV_DEV(netdev, &pdev->dev);
pci_set_drvdata(pdev, netdev);
adapter->hw.back = adapter;
adapter->msg_enable = netif_msg_init(debug, DEFAULT_DEBUG_LEVEL_SHIFT);
- mmio_start = pci_resource_start(pdev, BAR_0);
- mmio_len = pci_resource_len(pdev, BAR_0);
-
- adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
- if(!adapter->hw.hw_addr) {
+ adapter->hw.hw_addr = pci_ioremap_bar(pdev, BAR_0);
+ if (!adapter->hw.hw_addr) {
err = -EIO;
goto err_ioremap;
}
- for(i = BAR_1; i <= BAR_5; i++) {
- if(pci_resource_len(pdev, i) == 0)
+ for (i = BAR_1; i <= BAR_5; i++) {
+ if (pci_resource_len(pdev, i) == 0)
continue;
- if(pci_resource_flags(pdev, i) & IORESOURCE_IO) {
+ if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
adapter->hw.io_base = pci_resource_start(pdev, i);
break;
}
}
- netdev->open = &ixgb_open;
- netdev->stop = &ixgb_close;
- netdev->hard_start_xmit = &ixgb_xmit_frame;
- netdev->get_stats = &ixgb_get_stats;
- netdev->set_multicast_list = &ixgb_set_multi;
- netdev->set_mac_address = &ixgb_set_mac;
- netdev->change_mtu = &ixgb_change_mtu;
+ netdev->netdev_ops = &ixgb_netdev_ops;
ixgb_set_ethtool_ops(netdev);
- netdev->tx_timeout = &ixgb_tx_timeout;
netdev->watchdog_timeo = 5 * HZ;
-#ifdef CONFIG_IXGB_NAPI
- netdev->poll = &ixgb_clean;
- netdev->weight = 64;
-#endif
- netdev->vlan_rx_register = ixgb_vlan_rx_register;
- netdev->vlan_rx_add_vid = ixgb_vlan_rx_add_vid;
- netdev->vlan_rx_kill_vid = ixgb_vlan_rx_kill_vid;
-#ifdef CONFIG_NET_POLL_CONTROLLER
- netdev->poll_controller = ixgb_netpoll;
-#endif
+ netif_napi_add(netdev, &adapter->napi, ixgb_clean, 64);
strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
- netdev->mem_start = mmio_start;
- netdev->mem_end = mmio_start + mmio_len;
- netdev->base_addr = adapter->hw.io_base;
adapter->bd_number = cards_found;
adapter->link_speed = 0;
/* setup the private structure */
- if((err = ixgb_sw_init(adapter)))
+ err = ixgb_sw_init(adapter);
+ if (err)
goto err_sw_init;
netdev->features = NETIF_F_SG |
NETIF_F_HW_VLAN_TX |
NETIF_F_HW_VLAN_RX |
NETIF_F_HW_VLAN_FILTER;
-#ifdef NETIF_F_TSO
netdev->features |= NETIF_F_TSO;
-#endif
-#ifdef NETIF_F_LLTX
- netdev->features |= NETIF_F_LLTX;
-#endif
- if(pci_using_dac)
+ if (pci_using_dac)
netdev->features |= NETIF_F_HIGHDMA;
/* make sure the EEPROM is good */
- if(!ixgb_validate_eeprom_checksum(&adapter->hw)) {
+ if (!ixgb_validate_eeprom_checksum(&adapter->hw)) {
DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
err = -EIO;
goto err_eeprom;
ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr);
memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
- if(!is_valid_ether_addr(netdev->perm_addr)) {
+ if (!is_valid_ether_addr(netdev->perm_addr)) {
DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
err = -EIO;
goto err_eeprom;
adapter->watchdog_timer.function = &ixgb_watchdog;
adapter->watchdog_timer.data = (unsigned long)adapter;
- INIT_WORK(&adapter->tx_timeout_task,
- (void (*)(void *))ixgb_tx_timeout_task, netdev);
+ INIT_WORK(&adapter->tx_timeout_task, ixgb_tx_timeout_task);
strcpy(netdev->name, "eth%d");
- if((err = register_netdev(netdev)))
+ err = register_netdev(netdev);
+ if (err)
goto err_register;
- /* we're going to reset, so assume we have no link for now */
-
+ /* carrier off reporting is important to ethtool even BEFORE open */
netif_carrier_off(netdev);
- netif_stop_queue(netdev);
DPRINTK(PROBE, INFO, "Intel(R) PRO/10GbE Network Connection\n");
ixgb_check_options(adapter);
struct net_device *netdev = pci_get_drvdata(pdev);
struct ixgb_adapter *adapter = netdev_priv(netdev);
+ flush_scheduled_work();
+
unregister_netdev(netdev);
iounmap(adapter->hw.hw_addr);
hw->subsystem_id = pdev->subsystem_device;
hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
- adapter->rx_buffer_len = hw->max_frame_size;
+ adapter->rx_buffer_len = hw->max_frame_size + 8; /* + 8 for errata */
- if((hw->device_id == IXGB_DEVICE_ID_82597EX)
+ if ((hw->device_id == IXGB_DEVICE_ID_82597EX)
|| (hw->device_id == IXGB_DEVICE_ID_82597EX_CX4)
|| (hw->device_id == IXGB_DEVICE_ID_82597EX_LR)
|| (hw->device_id == IXGB_DEVICE_ID_82597EX_SR))
- hw->mac_type = ixgb_82597;
+ hw->mac_type = ixgb_82597;
else {
/* should never have loaded on this device */
DPRINTK(PROBE, ERR, "unsupported device id\n");
/* enable flow control to be programmed */
hw->fc.send_xon = 1;
- atomic_set(&adapter->irq_sem, 1);
- spin_lock_init(&adapter->tx_lock);
-
+ set_bit(__IXGB_DOWN, &adapter->flags);
return 0;
}
int err;
/* allocate transmit descriptors */
-
- if((err = ixgb_setup_tx_resources(adapter)))
+ err = ixgb_setup_tx_resources(adapter);
+ if (err)
goto err_setup_tx;
+ netif_carrier_off(netdev);
+
/* allocate receive descriptors */
- if((err = ixgb_setup_rx_resources(adapter)))
+ err = ixgb_setup_rx_resources(adapter);
+ if (err)
goto err_setup_rx;
- if((err = ixgb_up(adapter)))
+ err = ixgb_up(adapter);
+ if (err)
goto err_up;
+ netif_start_queue(netdev);
+
return 0;
err_up:
{
struct ixgb_adapter *adapter = netdev_priv(netdev);
- ixgb_down(adapter, TRUE);
+ ixgb_down(adapter, true);
ixgb_free_tx_resources(adapter);
ixgb_free_rx_resources(adapter);
size = sizeof(struct ixgb_buffer) * txdr->count;
txdr->buffer_info = vmalloc(size);
- if(!txdr->buffer_info) {
+ if (!txdr->buffer_info) {
DPRINTK(PROBE, ERR,
"Unable to allocate transmit descriptor ring memory\n");
return -ENOMEM;
/* round up to nearest 4K */
txdr->size = txdr->count * sizeof(struct ixgb_tx_desc);
- IXGB_ROUNDUP(txdr->size, 4096);
+ txdr->size = ALIGN(txdr->size, 4096);
txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
- if(!txdr->desc) {
+ if (!txdr->desc) {
vfree(txdr->buffer_info);
DPRINTK(PROBE, ERR,
"Unable to allocate transmit descriptor memory\n");
static void
ixgb_configure_tx(struct ixgb_adapter *adapter)
{
- uint64_t tdba = adapter->tx_ring.dma;
- uint32_t tdlen = adapter->tx_ring.count * sizeof(struct ixgb_tx_desc);
- uint32_t tctl;
+ u64 tdba = adapter->tx_ring.dma;
+ u32 tdlen = adapter->tx_ring.count * sizeof(struct ixgb_tx_desc);
+ u32 tctl;
struct ixgb_hw *hw = &adapter->hw;
- /* Setup the Base and Length of the Tx Descriptor Ring
- * tx_ring.dma can be either a 32 or 64 bit value
+ /* Setup the Base and Length of the Tx Descriptor Ring
+ * tx_ring.dma can be either a 32 or 64 bit value
*/
IXGB_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL));
/* Setup Transmit Descriptor Settings for this adapter */
adapter->tx_cmd_type =
- IXGB_TX_DESC_TYPE
- | (adapter->tx_int_delay_enable ? IXGB_TX_DESC_CMD_IDE : 0);
+ IXGB_TX_DESC_TYPE |
+ (adapter->tx_int_delay_enable ? IXGB_TX_DESC_CMD_IDE : 0);
}
/**
size = sizeof(struct ixgb_buffer) * rxdr->count;
rxdr->buffer_info = vmalloc(size);
- if(!rxdr->buffer_info) {
+ if (!rxdr->buffer_info) {
DPRINTK(PROBE, ERR,
"Unable to allocate receive descriptor ring\n");
return -ENOMEM;
/* Round up to nearest 4K */
rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc);
- IXGB_ROUNDUP(rxdr->size, 4096);
+ rxdr->size = ALIGN(rxdr->size, 4096);
rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
- if(!rxdr->desc) {
+ if (!rxdr->desc) {
vfree(rxdr->buffer_info);
DPRINTK(PROBE, ERR,
"Unable to allocate receive descriptors\n");
static void
ixgb_setup_rctl(struct ixgb_adapter *adapter)
{
- uint32_t rctl;
+ u32 rctl;
rctl = IXGB_READ_REG(&adapter->hw, RCTL);
rctl &= ~(3 << IXGB_RCTL_MO_SHIFT);
rctl |=
- IXGB_RCTL_BAM | IXGB_RCTL_RDMTS_1_2 |
- IXGB_RCTL_RXEN | IXGB_RCTL_CFF |
+ IXGB_RCTL_BAM | IXGB_RCTL_RDMTS_1_2 |
+ IXGB_RCTL_RXEN | IXGB_RCTL_CFF |
(adapter->hw.mc_filter_type << IXGB_RCTL_MO_SHIFT);
rctl |= IXGB_RCTL_SECRC;
static void
ixgb_configure_rx(struct ixgb_adapter *adapter)
{
- uint64_t rdba = adapter->rx_ring.dma;
- uint32_t rdlen = adapter->rx_ring.count * sizeof(struct ixgb_rx_desc);
+ u64 rdba = adapter->rx_ring.dma;
+ u32 rdlen = adapter->rx_ring.count * sizeof(struct ixgb_rx_desc);
struct ixgb_hw *hw = &adapter->hw;
- uint32_t rctl;
- uint32_t rxcsum;
- uint32_t rxdctl;
+ u32 rctl;
+ u32 rxcsum;
/* make sure receives are disabled while setting up the descriptors */
IXGB_WRITE_REG(hw, RDH, 0);
IXGB_WRITE_REG(hw, RDT, 0);
- /* set up pre-fetching of receive buffers so we get some before we
- * run out (default hardware behavior is to run out before fetching
- * more). This sets up to fetch if HTHRESH rx descriptors are avail
- * and the descriptors in hw cache are below PTHRESH. This avoids
- * the hardware behavior of fetching <=512 descriptors in a single
- * burst that pre-empts all other activity, usually causing fifo
- * overflows. */
- /* use WTHRESH to burst write 16 descriptors or burst when RXT0 */
- rxdctl = RXDCTL_WTHRESH_DEFAULT << IXGB_RXDCTL_WTHRESH_SHIFT |
- RXDCTL_HTHRESH_DEFAULT << IXGB_RXDCTL_HTHRESH_SHIFT |
- RXDCTL_PTHRESH_DEFAULT << IXGB_RXDCTL_PTHRESH_SHIFT;
- IXGB_WRITE_REG(hw, RXDCTL, rxdctl);
+ /* due to the hardware errata with RXDCTL, we are unable to use any of
+ * the performance enhancing features of it without causing other
+ * subtle bugs, some of the bugs could include receive length
+ * corruption at high data rates (WTHRESH > 0) and/or receive
+ * descriptor ring irregularites (particularly in hardware cache) */
+ IXGB_WRITE_REG(hw, RXDCTL, 0);
/* Enable Receive Checksum Offload for TCP and UDP */
- if(adapter->rx_csum == TRUE) {
+ if (adapter->rx_csum) {
rxcsum = IXGB_READ_REG(hw, RXCSUM);
rxcsum |= IXGB_RXCSUM_TUOFL;
IXGB_WRITE_REG(hw, RXCSUM, rxcsum);
static void
ixgb_unmap_and_free_tx_resource(struct ixgb_adapter *adapter,
- struct ixgb_buffer *buffer_info)
+ struct ixgb_buffer *buffer_info)
{
- struct pci_dev *pdev = adapter->pdev;
-
- if (buffer_info->dma)
- pci_unmap_page(pdev, buffer_info->dma, buffer_info->length,
- PCI_DMA_TODEVICE);
+ if (buffer_info->dma) {
+ if (buffer_info->mapped_as_page)
+ pci_unmap_page(adapter->pdev, buffer_info->dma,
+ buffer_info->length, PCI_DMA_TODEVICE);
+ else
+ pci_unmap_single(adapter->pdev, buffer_info->dma,
+ buffer_info->length,
+ PCI_DMA_TODEVICE);
+ buffer_info->dma = 0;
+ }
- if (buffer_info->skb)
+ if (buffer_info->skb) {
dev_kfree_skb_any(buffer_info->skb);
-
- buffer_info->skb = NULL;
- buffer_info->dma = 0;
+ buffer_info->skb = NULL;
+ }
buffer_info->time_stamp = 0;
/* these fields must always be initialized in tx
* buffer_info->length = 0;
/* Free all the Tx ring sk_buffs */
- for(i = 0; i < tx_ring->count; i++) {
+ for (i = 0; i < tx_ring->count; i++) {
buffer_info = &tx_ring->buffer_info[i];
ixgb_unmap_and_free_tx_resource(adapter, buffer_info);
}
/* Free all the Rx ring sk_buffs */
- for(i = 0; i < rx_ring->count; i++) {
+ for (i = 0; i < rx_ring->count; i++) {
buffer_info = &rx_ring->buffer_info[i];
- if(buffer_info->skb) {
-
+ if (buffer_info->dma) {
pci_unmap_single(pdev,
buffer_info->dma,
buffer_info->length,
PCI_DMA_FROMDEVICE);
+ buffer_info->dma = 0;
+ buffer_info->length = 0;
+ }
+ if (buffer_info->skb) {
dev_kfree_skb(buffer_info->skb);
-
buffer_info->skb = NULL;
}
}
struct ixgb_adapter *adapter = netdev_priv(netdev);
struct sockaddr *addr = p;
- if(!is_valid_ether_addr(addr->sa_data))
+ if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
struct ixgb_adapter *adapter = netdev_priv(netdev);
struct ixgb_hw *hw = &adapter->hw;
struct dev_mc_list *mc_ptr;
- uint32_t rctl;
+ u32 rctl;
int i;
/* Check for Promiscuous and All Multicast modes */
rctl = IXGB_READ_REG(hw, RCTL);
- if(netdev->flags & IFF_PROMISC) {
+ if (netdev->flags & IFF_PROMISC) {
rctl |= (IXGB_RCTL_UPE | IXGB_RCTL_MPE);
- } else if(netdev->flags & IFF_ALLMULTI) {
- rctl |= IXGB_RCTL_MPE;
- rctl &= ~IXGB_RCTL_UPE;
+ rctl &= ~IXGB_RCTL_VFE;
} else {
- rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE);
+ if (netdev->flags & IFF_ALLMULTI) {
+ rctl |= IXGB_RCTL_MPE;
+ rctl &= ~IXGB_RCTL_UPE;
+ } else {
+ rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE);
+ }
+ rctl |= IXGB_RCTL_VFE;
}
- if(netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES) {
+ if (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES) {
rctl |= IXGB_RCTL_MPE;
IXGB_WRITE_REG(hw, RCTL, rctl);
} else {
- uint8_t mta[netdev->mc_count * IXGB_ETH_LENGTH_OF_ADDRESS];
+ u8 mta[IXGB_MAX_NUM_MULTICAST_ADDRESSES *
+ IXGB_ETH_LENGTH_OF_ADDRESS];
IXGB_WRITE_REG(hw, RCTL, rctl);
- for(i = 0, mc_ptr = netdev->mc_list; mc_ptr;
- i++, mc_ptr = mc_ptr->next)
+ for (i = 0, mc_ptr = netdev->mc_list;
+ mc_ptr;
+ i++, mc_ptr = mc_ptr->next)
memcpy(&mta[i * IXGB_ETH_LENGTH_OF_ADDRESS],
- mc_ptr->dmi_addr, IXGB_ETH_LENGTH_OF_ADDRESS);
+ mc_ptr->dmi_addr, IXGB_ETH_LENGTH_OF_ADDRESS);
ixgb_mc_addr_list_update(hw, mta, netdev->mc_count, 0);
}
netif_stop_queue(netdev);
}
- if(adapter->hw.link_up) {
- if(!netif_carrier_ok(netdev)) {
- DPRINTK(LINK, INFO,
- "NIC Link is Up 10000 Mbps Full Duplex\n");
+ if (adapter->hw.link_up) {
+ if (!netif_carrier_ok(netdev)) {
+ printk(KERN_INFO "ixgb: %s NIC Link is Up 10 Gbps "
+ "Full Duplex, Flow Control: %s\n",
+ netdev->name,
+ (adapter->hw.fc.type == ixgb_fc_full) ?
+ "RX/TX" :
+ ((adapter->hw.fc.type == ixgb_fc_rx_pause) ?
+ "RX" :
+ ((adapter->hw.fc.type == ixgb_fc_tx_pause) ?
+ "TX" : "None")));
adapter->link_speed = 10000;
adapter->link_duplex = FULL_DUPLEX;
netif_carrier_on(netdev);
- netif_wake_queue(netdev);
}
} else {
- if(netif_carrier_ok(netdev)) {
+ if (netif_carrier_ok(netdev)) {
adapter->link_speed = 0;
adapter->link_duplex = 0;
- DPRINTK(LINK, INFO, "NIC Link is Down\n");
+ printk(KERN_INFO "ixgb: %s NIC Link is Down\n",
+ netdev->name);
netif_carrier_off(netdev);
- netif_stop_queue(netdev);
-
}
}
ixgb_update_stats(adapter);
- if(!netif_carrier_ok(netdev)) {
- if(IXGB_DESC_UNUSED(txdr) + 1 < txdr->count) {
+ if (!netif_carrier_ok(netdev)) {
+ if (IXGB_DESC_UNUSED(txdr) + 1 < txdr->count) {
/* 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). */
schedule_work(&adapter->tx_timeout_task);
+ /* return immediately since reset is imminent */
+ return;
}
}
/* Force detection of hung controller every watchdog period */
- adapter->detect_tx_hung = TRUE;
+ adapter->detect_tx_hung = true;
/* generate an interrupt to force clean up of any stragglers */
IXGB_WRITE_REG(&adapter->hw, ICS, IXGB_INT_TXDW);
static int
ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb)
{
-#ifdef NETIF_F_TSO
struct ixgb_context_desc *context_desc;
unsigned int i;
- uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
- uint16_t ipcse, tucse, mss;
+ u8 ipcss, ipcso, tucss, tucso, hdr_len;
+ u16 ipcse, tucse, mss;
int err;
if (likely(skb_is_gso(skb))) {
struct ixgb_buffer *buffer_info;
+ struct iphdr *iph;
+
if (skb_header_cloned(skb)) {
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
if (err)
return err;
}
- hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
+ hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
mss = skb_shinfo(skb)->gso_size;
- skb->nh.iph->tot_len = 0;
- skb->nh.iph->check = 0;
- skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
- skb->nh.iph->daddr,
- 0, IPPROTO_TCP, 0);
- ipcss = skb->nh.raw - skb->data;
- ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
- ipcse = skb->h.raw - skb->data - 1;
- tucss = skb->h.raw - skb->data;
- tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
+ iph = ip_hdr(skb);
+ iph->tot_len = 0;
+ iph->check = 0;
+ tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
+ iph->daddr, 0,
+ IPPROTO_TCP, 0);
+ ipcss = skb_network_offset(skb);
+ ipcso = (void *)&(iph->check) - (void *)skb->data;
+ ipcse = skb_transport_offset(skb) - 1;
+ tucss = skb_transport_offset(skb);
+ tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
tucse = 0;
i = adapter->tx_ring.next_to_use;
context_desc->hdr_len = hdr_len;
context_desc->status = 0;
context_desc->cmd_type_len = cpu_to_le32(
- IXGB_CONTEXT_DESC_TYPE
+ IXGB_CONTEXT_DESC_TYPE
| IXGB_CONTEXT_DESC_CMD_TSE
| IXGB_CONTEXT_DESC_CMD_IP
| IXGB_CONTEXT_DESC_CMD_TCP
| (skb->len - (hdr_len)));
- if(++i == adapter->tx_ring.count) i = 0;
+ if (++i == adapter->tx_ring.count) i = 0;
adapter->tx_ring.next_to_use = i;
return 1;
}
-#endif
return 0;
}
-static boolean_t
+static bool
ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb)
{
struct ixgb_context_desc *context_desc;
unsigned int i;
- uint8_t css, cso;
+ u8 css, cso;
- if(likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
+ if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
struct ixgb_buffer *buffer_info;
- css = skb->h.raw - skb->data;
- cso = (skb->h.raw + skb->csum) - skb->data;
+ css = skb_transport_offset(skb);
+ cso = css + skb->csum_offset;
i = adapter->tx_ring.next_to_use;
context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i);
context_desc->tucso = cso;
context_desc->tucse = 0;
/* zero out any previously existing data in one instruction */
- *(uint32_t *)&(context_desc->ipcss) = 0;
+ *(u32 *)&(context_desc->ipcss) = 0;
context_desc->status = 0;
context_desc->hdr_len = 0;
context_desc->mss = 0;
cpu_to_le32(IXGB_CONTEXT_DESC_TYPE
| IXGB_TX_DESC_CMD_IDE);
- if(++i == adapter->tx_ring.count) i = 0;
+ if (++i == adapter->tx_ring.count) i = 0;
adapter->tx_ring.next_to_use = i;
- return TRUE;
+ return true;
}
- return FALSE;
+ return false;
}
#define IXGB_MAX_TXD_PWR 14
unsigned int first)
{
struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
+ struct pci_dev *pdev = adapter->pdev;
struct ixgb_buffer *buffer_info;
- int len = skb->len;
+ int len = skb_headlen(skb);
unsigned int offset = 0, size, count = 0, i;
-
+ unsigned int mss = skb_shinfo(skb)->gso_size;
unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
unsigned int f;
- len -= skb->data_len;
-
i = tx_ring->next_to_use;
- while(len) {
+ while (len) {
buffer_info = &tx_ring->buffer_info[i];
size = min(len, IXGB_MAX_DATA_PER_TXD);
+ /* Workaround for premature desc write-backs
+ * in TSO mode. Append 4-byte sentinel desc */
+ if (unlikely(mss && !nr_frags && size == len && size > 8))
+ size -= 4;
+
buffer_info->length = size;
WARN_ON(buffer_info->dma != 0);
- buffer_info->dma =
- pci_map_single(adapter->pdev,
- skb->data + offset,
- size,
- PCI_DMA_TODEVICE);
buffer_info->time_stamp = jiffies;
+ buffer_info->mapped_as_page = false;
+ buffer_info->dma = pci_map_single(pdev, skb->data + offset,
+ size, PCI_DMA_TODEVICE);
+ if (pci_dma_mapping_error(pdev, buffer_info->dma))
+ goto dma_error;
buffer_info->next_to_watch = 0;
len -= size;
offset += size;
count++;
- if(++i == tx_ring->count) i = 0;
+ if (len) {
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+ }
}
- for(f = 0; f < nr_frags; f++) {
+ for (f = 0; f < nr_frags; f++) {
struct skb_frag_struct *frag;
frag = &skb_shinfo(skb)->frags[f];
len = frag->size;
- offset = 0;
+ offset = frag->page_offset;
+
+ while (len) {
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
- while(len) {
buffer_info = &tx_ring->buffer_info[i];
size = min(len, IXGB_MAX_DATA_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))
+ size -= 4;
+
buffer_info->length = size;
- buffer_info->dma =
- pci_map_page(adapter->pdev,
- frag->page,
- frag->page_offset + offset,
- size,
- PCI_DMA_TODEVICE);
buffer_info->time_stamp = jiffies;
+ buffer_info->mapped_as_page = true;
+ buffer_info->dma =
+ pci_map_page(pdev, frag->page,
+ offset, size,
+ PCI_DMA_TODEVICE);
+ if (pci_dma_mapping_error(pdev, buffer_info->dma))
+ goto dma_error;
buffer_info->next_to_watch = 0;
len -= size;
offset += size;
count++;
- if(++i == tx_ring->count) i = 0;
}
}
- i = (i == 0) ? tx_ring->count - 1 : i - 1;
tx_ring->buffer_info[i].skb = skb;
tx_ring->buffer_info[first].next_to_watch = i;
return count;
+
+dma_error:
+ dev_err(&pdev->dev, "TX DMA map failed\n");
+ buffer_info->dma = 0;
+ if (count)
+ count--;
+
+ while (count--) {
+ if (i==0)
+ i += tx_ring->count;
+ i--;
+ buffer_info = &tx_ring->buffer_info[i];
+ ixgb_unmap_and_free_tx_resource(adapter, buffer_info);
+ }
+
+ return 0;
}
static void
struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
struct ixgb_tx_desc *tx_desc = NULL;
struct ixgb_buffer *buffer_info;
- uint32_t cmd_type_len = adapter->tx_cmd_type;
- uint8_t status = 0;
- uint8_t popts = 0;
+ u32 cmd_type_len = adapter->tx_cmd_type;
+ u8 status = 0;
+ u8 popts = 0;
unsigned int i;
- if(tx_flags & IXGB_TX_FLAGS_TSO) {
+ if (tx_flags & IXGB_TX_FLAGS_TSO) {
cmd_type_len |= IXGB_TX_DESC_CMD_TSE;
popts |= (IXGB_TX_DESC_POPTS_IXSM | IXGB_TX_DESC_POPTS_TXSM);
}
- if(tx_flags & IXGB_TX_FLAGS_CSUM)
+ if (tx_flags & IXGB_TX_FLAGS_CSUM)
popts |= IXGB_TX_DESC_POPTS_TXSM;
- if(tx_flags & IXGB_TX_FLAGS_VLAN) {
+ if (tx_flags & IXGB_TX_FLAGS_VLAN)
cmd_type_len |= IXGB_TX_DESC_CMD_VLE;
- }
i = tx_ring->next_to_use;
- while(count--) {
+ while (count--) {
buffer_info = &tx_ring->buffer_info[i];
tx_desc = IXGB_TX_DESC(*tx_ring, i);
tx_desc->buff_addr = cpu_to_le64(buffer_info->dma);
tx_desc->popts = popts;
tx_desc->vlan = cpu_to_le16(vlan_id);
- if(++i == tx_ring->count) i = 0;
+ if (++i == tx_ring->count) i = 0;
}
- tx_desc->cmd_type_len |= cpu_to_le32(IXGB_TX_DESC_CMD_EOP
- | IXGB_TX_DESC_CMD_RS );
+ tx_desc->cmd_type_len |=
+ cpu_to_le32(IXGB_TX_DESC_CMD_EOP | IXGB_TX_DESC_CMD_RS);
/* Force memory writes to complete before letting h/w
* know there are new descriptors to fetch. (Only
IXGB_WRITE_REG(&adapter->hw, TDT, i);
}
+static int __ixgb_maybe_stop_tx(struct net_device *netdev, int size)
+{
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
+ struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
+
+ 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. */
+ smp_mb();
+
+ /* We need to check again in a case another CPU has just
+ * made room available. */
+ if (likely(IXGB_DESC_UNUSED(tx_ring) < size))
+ return -EBUSY;
+
+ /* A reprieve! */
+ netif_start_queue(netdev);
+ ++adapter->restart_queue;
+ return 0;
+}
+
+static int ixgb_maybe_stop_tx(struct net_device *netdev,
+ struct ixgb_desc_ring *tx_ring, int size)
+{
+ if (likely(IXGB_DESC_UNUSED(tx_ring) >= size))
+ return 0;
+ return __ixgb_maybe_stop_tx(netdev, size);
+}
+
+
/* Tx Descriptors needed, worst case */
#define TXD_USE_COUNT(S) (((S) >> IXGB_MAX_TXD_PWR) + \
(((S) & (IXGB_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
-#define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) + \
- MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1
+#define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) /* skb->date */ + \
+ MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1 /* for context */ \
+ + 1 /* one more needed for sentinel TSO workaround */
-static int
+static netdev_tx_t
ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
{
struct ixgb_adapter *adapter = netdev_priv(netdev);
unsigned int first;
unsigned int tx_flags = 0;
- unsigned long flags;
int vlan_id = 0;
+ int count = 0;
int tso;
- if(skb->len <= 0) {
- dev_kfree_skb_any(skb);
- return 0;
+ if (test_bit(__IXGB_DOWN, &adapter->flags)) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
}
-#ifdef NETIF_F_LLTX
- local_irq_save(flags);
- if (!spin_trylock(&adapter->tx_lock)) {
- /* Collision - tell upper layer to requeue */
- local_irq_restore(flags);
- return NETDEV_TX_LOCKED;
+ if (skb->len <= 0) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
}
-#else
- spin_lock_irqsave(&adapter->tx_lock, flags);
-#endif
- if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED)) {
- netif_stop_queue(netdev);
- spin_unlock_irqrestore(&adapter->tx_lock, flags);
+ if (unlikely(ixgb_maybe_stop_tx(netdev, &adapter->tx_ring,
+ DESC_NEEDED)))
return NETDEV_TX_BUSY;
- }
-#ifndef NETIF_F_LLTX
- spin_unlock_irqrestore(&adapter->tx_lock, flags);
-#endif
-
- if(adapter->vlgrp && vlan_tx_tag_present(skb)) {
+ if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
tx_flags |= IXGB_TX_FLAGS_VLAN;
vlan_id = vlan_tx_tag_get(skb);
}
first = adapter->tx_ring.next_to_use;
-
+
tso = ixgb_tso(adapter, skb);
if (tso < 0) {
- dev_kfree_skb_any(skb);
-#ifdef NETIF_F_LLTX
- spin_unlock_irqrestore(&adapter->tx_lock, flags);
-#endif
+ dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
if (likely(tso))
tx_flags |= IXGB_TX_FLAGS_TSO;
- else if(ixgb_tx_csum(adapter, skb))
+ else if (ixgb_tx_csum(adapter, skb))
tx_flags |= IXGB_TX_FLAGS_CSUM;
- ixgb_tx_queue(adapter, ixgb_tx_map(adapter, skb, first), vlan_id,
- tx_flags);
+ count = ixgb_tx_map(adapter, skb, first);
- netdev->trans_start = jiffies;
+ if (count) {
+ ixgb_tx_queue(adapter, count, vlan_id, tx_flags);
+ /* Make sure there is space in the ring for the next send. */
+ ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, DESC_NEEDED);
-#ifdef NETIF_F_LLTX
- /* Make sure there is space in the ring for the next send. */
- if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED))
- netif_stop_queue(netdev);
-
- spin_unlock_irqrestore(&adapter->tx_lock, flags);
+ } else {
+ dev_kfree_skb_any(skb);
+ adapter->tx_ring.buffer_info[first].time_stamp = 0;
+ adapter->tx_ring.next_to_use = first;
+ }
-#endif
return NETDEV_TX_OK;
}
}
static void
-ixgb_tx_timeout_task(struct net_device *netdev)
+ixgb_tx_timeout_task(struct work_struct *work)
{
- struct ixgb_adapter *adapter = netdev_priv(netdev);
+ struct ixgb_adapter *adapter =
+ container_of(work, struct ixgb_adapter, tx_timeout_task);
adapter->tx_timeout_count++;
- ixgb_down(adapter, TRUE);
+ ixgb_down(adapter, true);
ixgb_up(adapter);
}
static struct net_device_stats *
ixgb_get_stats(struct net_device *netdev)
{
- struct ixgb_adapter *adapter = netdev_priv(netdev);
-
- return &adapter->net_stats;
+ return &netdev->stats;
}
/**
int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
-
- if((max_frame < IXGB_MIN_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH)
- || (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) {
+ /* MTU < 68 is an error for IPv4 traffic, just don't allow it */
+ if ((new_mtu < 68) ||
+ (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) {
DPRINTK(PROBE, ERR, "Invalid MTU setting %d\n", new_mtu);
return -EINVAL;
}
- adapter->rx_buffer_len = max_frame;
+ if (old_max_frame == max_frame)
+ return 0;
+
+ if (netif_running(netdev))
+ ixgb_down(adapter, true);
+
+ adapter->rx_buffer_len = max_frame + 8; /* + 8 for errata */
netdev->mtu = new_mtu;
- if ((old_max_frame != max_frame) && netif_running(netdev)) {
- ixgb_down(adapter, TRUE);
+ if (netif_running(netdev))
ixgb_up(adapter);
- }
return 0;
}
struct pci_dev *pdev = adapter->pdev;
/* Prevent stats update while adapter is being reset */
- if (pdev->error_state && pdev->error_state != pci_channel_io_normal)
+ if (pci_channel_offline(pdev))
return;
- if((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) ||
+ if ((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) ||
(netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) {
u64 multi = IXGB_READ_REG(&adapter->hw, MPRCL);
u32 bcast_l = IXGB_READ_REG(&adapter->hw, BPRCL);
u32 bcast_h = IXGB_READ_REG(&adapter->hw, BPRCH);
- u64 bcast = ((u64)bcast_h << 32) | bcast_l;
+ u64 bcast = ((u64)bcast_h << 32) | bcast_l;
multi |= ((u64)IXGB_READ_REG(&adapter->hw, MPRCH) << 32);
/* fix up multicast stats by removing broadcasts */
- if(multi >= bcast)
+ if (multi >= bcast)
multi -= bcast;
-
+
adapter->stats.mprcl += (multi & 0xFFFFFFFF);
adapter->stats.mprch += (multi >> 32);
- adapter->stats.bprcl += bcast_l;
+ adapter->stats.bprcl += bcast_l;
adapter->stats.bprch += bcast_h;
} else {
adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL);
/* Fill out the OS statistics structure */
- adapter->net_stats.rx_packets = adapter->stats.gprcl;
- adapter->net_stats.tx_packets = adapter->stats.gptcl;
- adapter->net_stats.rx_bytes = adapter->stats.gorcl;
- adapter->net_stats.tx_bytes = adapter->stats.gotcl;
- adapter->net_stats.multicast = adapter->stats.mprcl;
- adapter->net_stats.collisions = 0;
+ netdev->stats.rx_packets = adapter->stats.gprcl;
+ netdev->stats.tx_packets = adapter->stats.gptcl;
+ netdev->stats.rx_bytes = adapter->stats.gorcl;
+ netdev->stats.tx_bytes = adapter->stats.gotcl;
+ netdev->stats.multicast = adapter->stats.mprcl;
+ netdev->stats.collisions = 0;
/* ignore RLEC as it reports errors for padded (<64bytes) frames
* with a length in the type/len field */
- adapter->net_stats.rx_errors =
+ netdev->stats.rx_errors =
/* adapter->stats.rnbc + */ adapter->stats.crcerrs +
adapter->stats.ruc +
adapter->stats.roc /*+ adapter->stats.rlec */ +
adapter->stats.ecbc + adapter->stats.mpc;
/* see above
- * adapter->net_stats.rx_length_errors = adapter->stats.rlec;
+ * netdev->stats.rx_length_errors = adapter->stats.rlec;
*/
- adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
- adapter->net_stats.rx_fifo_errors = adapter->stats.mpc;
- adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
- adapter->net_stats.rx_over_errors = adapter->stats.mpc;
-
- adapter->net_stats.tx_errors = 0;
- adapter->net_stats.rx_frame_errors = 0;
- adapter->net_stats.tx_aborted_errors = 0;
- adapter->net_stats.tx_carrier_errors = 0;
- adapter->net_stats.tx_fifo_errors = 0;
- adapter->net_stats.tx_heartbeat_errors = 0;
- adapter->net_stats.tx_window_errors = 0;
+ netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
+ netdev->stats.rx_fifo_errors = adapter->stats.mpc;
+ netdev->stats.rx_missed_errors = adapter->stats.mpc;
+ netdev->stats.rx_over_errors = adapter->stats.mpc;
+
+ netdev->stats.tx_errors = 0;
+ netdev->stats.rx_frame_errors = 0;
+ netdev->stats.tx_aborted_errors = 0;
+ netdev->stats.tx_carrier_errors = 0;
+ netdev->stats.tx_fifo_errors = 0;
+ netdev->stats.tx_heartbeat_errors = 0;
+ netdev->stats.tx_window_errors = 0;
}
#define IXGB_MAX_INTR 10
* ixgb_intr - Interrupt Handler
* @irq: interrupt number
* @data: pointer to a network interface device structure
- * @pt_regs: CPU registers structure
**/
static irqreturn_t
-ixgb_intr(int irq, void *data, struct pt_regs *regs)
+ixgb_intr(int irq, void *data)
{
struct net_device *netdev = data;
struct ixgb_adapter *adapter = netdev_priv(netdev);
struct ixgb_hw *hw = &adapter->hw;
- uint32_t icr = IXGB_READ_REG(hw, ICR);
-#ifndef CONFIG_IXGB_NAPI
- unsigned int i;
-#endif
+ u32 icr = IXGB_READ_REG(hw, ICR);
- if(unlikely(!icr))
+ if (unlikely(!icr))
return IRQ_NONE; /* Not our interrupt */
- if(unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) {
- mod_timer(&adapter->watchdog_timer, jiffies);
- }
+ if (unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC)))
+ if (!test_bit(__IXGB_DOWN, &adapter->flags))
+ mod_timer(&adapter->watchdog_timer, jiffies);
-#ifdef CONFIG_IXGB_NAPI
- if(netif_rx_schedule_prep(netdev)) {
+ if (napi_schedule_prep(&adapter->napi)) {
- /* Disable interrupts and register for poll. The flush
+ /* Disable interrupts and register for poll. The flush
of the posted write is intentionally left out.
*/
- atomic_inc(&adapter->irq_sem);
IXGB_WRITE_REG(&adapter->hw, IMC, ~0);
- __netif_rx_schedule(netdev);
+ __napi_schedule(&adapter->napi);
}
-#else
- /* yes, that is actually a & and it is meant to make sure that
- * every pass through this for loop checks both receive and
- * transmit queues for completed descriptors, intended to
- * avoid starvation issues and assist tx/rx fairness. */
- for(i = 0; i < IXGB_MAX_INTR; i++)
- if(!ixgb_clean_rx_irq(adapter) &
- !ixgb_clean_tx_irq(adapter))
- break;
-#endif
return IRQ_HANDLED;
}
-#ifdef CONFIG_IXGB_NAPI
/**
* ixgb_clean - NAPI Rx polling callback
* @adapter: board private structure
**/
static int
-ixgb_clean(struct net_device *netdev, int *budget)
+ixgb_clean(struct napi_struct *napi, int budget)
{
- struct ixgb_adapter *adapter = netdev_priv(netdev);
- int work_to_do = min(*budget, netdev->quota);
- int tx_cleaned;
+ struct ixgb_adapter *adapter = container_of(napi, struct ixgb_adapter, napi);
int work_done = 0;
- tx_cleaned = ixgb_clean_tx_irq(adapter);
- ixgb_clean_rx_irq(adapter, &work_done, work_to_do);
+ ixgb_clean_tx_irq(adapter);
+ ixgb_clean_rx_irq(adapter, &work_done, budget);
- *budget -= work_done;
- netdev->quota -= work_done;
-
- /* if no Tx and not enough Rx work done, exit the polling mode */
- if((!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) {
- netif_rx_complete(netdev);
- ixgb_irq_enable(adapter);
- return 0;
+ /* If budget not fully consumed, exit the polling mode */
+ if (work_done < budget) {
+ napi_complete(napi);
+ if (!test_bit(__IXGB_DOWN, &adapter->flags))
+ ixgb_irq_enable(adapter);
}
- return 1;
+ return work_done;
}
-#endif
/**
* ixgb_clean_tx_irq - Reclaim resources after transmit completes
* @adapter: board private structure
**/
-static boolean_t
+static bool
ixgb_clean_tx_irq(struct ixgb_adapter *adapter)
{
struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
struct ixgb_tx_desc *tx_desc, *eop_desc;
struct ixgb_buffer *buffer_info;
unsigned int i, eop;
- boolean_t cleaned = FALSE;
+ bool cleaned = false;
i = tx_ring->next_to_clean;
eop = tx_ring->buffer_info[i].next_to_watch;
eop_desc = IXGB_TX_DESC(*tx_ring, eop);
- while(eop_desc->status & IXGB_TX_DESC_STATUS_DD) {
+ while (eop_desc->status & IXGB_TX_DESC_STATUS_DD) {
- for(cleaned = FALSE; !cleaned; ) {
+ for (cleaned = false; !cleaned; ) {
tx_desc = IXGB_TX_DESC(*tx_ring, i);
buffer_info = &tx_ring->buffer_info[i];
- if (tx_desc->popts
- & (IXGB_TX_DESC_POPTS_TXSM |
- IXGB_TX_DESC_POPTS_IXSM))
+ if (tx_desc->popts &
+ (IXGB_TX_DESC_POPTS_TXSM |
+ IXGB_TX_DESC_POPTS_IXSM))
adapter->hw_csum_tx_good++;
ixgb_unmap_and_free_tx_resource(adapter, buffer_info);
- *(uint32_t *)&(tx_desc->status) = 0;
+ *(u32 *)&(tx_desc->status) = 0;
cleaned = (i == eop);
- if(++i == tx_ring->count) i = 0;
+ if (++i == tx_ring->count) i = 0;
}
eop = tx_ring->buffer_info[i].next_to_watch;
tx_ring->next_to_clean = i;
- if (unlikely(netif_queue_stopped(netdev))) {
- spin_lock(&adapter->tx_lock);
- if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev) &&
- (IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED))
+ if (unlikely(cleaned && netif_carrier_ok(netdev) &&
+ IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED)) {
+ /* Make sure that anybody stopping the queue after this
+ * sees the new next_to_clean. */
+ smp_mb();
+
+ if (netif_queue_stopped(netdev) &&
+ !(test_bit(__IXGB_DOWN, &adapter->flags))) {
netif_wake_queue(netdev);
- spin_unlock(&adapter->tx_lock);
+ ++adapter->restart_queue;
+ }
}
- if(adapter->detect_tx_hung) {
+ 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 */
- adapter->detect_tx_hung = FALSE;
- if (tx_ring->buffer_info[eop].dma &&
+ adapter->detect_tx_hung = false;
+ if (tx_ring->buffer_info[eop].time_stamp &&
time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + HZ)
&& !(IXGB_READ_REG(&adapter->hw, STATUS) &
IXGB_STATUS_TXOFF)) {
static void
ixgb_rx_checksum(struct ixgb_adapter *adapter,
- struct ixgb_rx_desc *rx_desc,
- struct sk_buff *skb)
+ struct ixgb_rx_desc *rx_desc,
+ struct sk_buff *skb)
{
/* Ignore Checksum bit is set OR
* TCP Checksum has not been calculated
*/
- if((rx_desc->status & IXGB_RX_DESC_STATUS_IXSM) ||
+ if ((rx_desc->status & IXGB_RX_DESC_STATUS_IXSM) ||
(!(rx_desc->status & IXGB_RX_DESC_STATUS_TCPCS))) {
skb->ip_summed = CHECKSUM_NONE;
return;
/* At this point we know the hardware did the TCP checksum */
/* now look at the TCP checksum error bit */
- if(rx_desc->errors & IXGB_RX_DESC_ERRORS_TCPE) {
+ if (rx_desc->errors & IXGB_RX_DESC_ERRORS_TCPE) {
/* let the stack verify checksum errors */
skb->ip_summed = CHECKSUM_NONE;
adapter->hw_csum_rx_error++;
* @adapter: board private structure
**/
-static boolean_t
-#ifdef CONFIG_IXGB_NAPI
+static bool
ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do)
-#else
-ixgb_clean_rx_irq(struct ixgb_adapter *adapter)
-#endif
{
struct ixgb_desc_ring *rx_ring = &adapter->rx_ring;
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct ixgb_rx_desc *rx_desc, *next_rxd;
struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer;
- uint32_t length;
+ u32 length;
unsigned int i, j;
- boolean_t cleaned = FALSE;
+ int cleaned_count = 0;
+ bool cleaned = false;
i = rx_ring->next_to_clean;
rx_desc = IXGB_RX_DESC(*rx_ring, i);
buffer_info = &rx_ring->buffer_info[i];
- while(rx_desc->status & IXGB_RX_DESC_STATUS_DD) {
- struct sk_buff *skb, *next_skb;
+ while (rx_desc->status & IXGB_RX_DESC_STATUS_DD) {
+ struct sk_buff *skb;
u8 status;
-#ifdef CONFIG_IXGB_NAPI
- if(*work_done >= work_to_do)
+ if (*work_done >= work_to_do)
break;
(*work_done)++;
-#endif
status = rx_desc->status;
skb = buffer_info->skb;
buffer_info->skb = NULL;
- prefetch(skb->data);
+ prefetch(skb->data - NET_IP_ALIGN);
- if(++i == rx_ring->count) i = 0;
+ if (++i == rx_ring->count) i = 0;
next_rxd = IXGB_RX_DESC(*rx_ring, i);
prefetch(next_rxd);
- if((j = i + 1) == rx_ring->count) j = 0;
+ if ((j = i + 1) == rx_ring->count) j = 0;
next2_buffer = &rx_ring->buffer_info[j];
prefetch(next2_buffer);
next_buffer = &rx_ring->buffer_info[i];
- next_skb = next_buffer->skb;
- prefetch(next_skb);
- cleaned = TRUE;
+ cleaned = true;
+ cleaned_count++;
pci_unmap_single(pdev,
buffer_info->dma,
buffer_info->length,
PCI_DMA_FROMDEVICE);
+ buffer_info->dma = 0;
length = le16_to_cpu(rx_desc->length);
+ rx_desc->length = 0;
- if(unlikely(!(status & IXGB_RX_DESC_STATUS_EOP))) {
+ if (unlikely(!(status & IXGB_RX_DESC_STATUS_EOP))) {
/* All receives must fit into a single buffer */
goto rxdesc_done;
}
- if (unlikely(rx_desc->errors
- & (IXGB_RX_DESC_ERRORS_CE | IXGB_RX_DESC_ERRORS_SE
- | IXGB_RX_DESC_ERRORS_P |
- IXGB_RX_DESC_ERRORS_RXE))) {
-
+ if (unlikely(rx_desc->errors &
+ (IXGB_RX_DESC_ERRORS_CE | IXGB_RX_DESC_ERRORS_SE |
+ IXGB_RX_DESC_ERRORS_P | IXGB_RX_DESC_ERRORS_RXE))) {
dev_kfree_skb_irq(skb);
goto rxdesc_done;
}
/* code added for copybreak, this should improve
* performance for small packets with large amounts
* of reassembly being done in the stack */
-#define IXGB_CB_LENGTH 256
- if (length < IXGB_CB_LENGTH) {
+ if (length < copybreak) {
struct sk_buff *new_skb =
- netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
+ netdev_alloc_skb_ip_align(netdev, length);
if (new_skb) {
- skb_reserve(new_skb, NET_IP_ALIGN);
- memcpy(new_skb->data - NET_IP_ALIGN,
- skb->data - NET_IP_ALIGN,
- length + NET_IP_ALIGN);
+ skb_copy_to_linear_data_offset(new_skb,
+ -NET_IP_ALIGN,
+ (skb->data -
+ NET_IP_ALIGN),
+ (length +
+ NET_IP_ALIGN));
/* save the skb in buffer_info as good */
buffer_info->skb = skb;
skb = new_skb;
ixgb_rx_checksum(adapter, rx_desc, skb);
skb->protocol = eth_type_trans(skb, netdev);
-#ifdef CONFIG_IXGB_NAPI
- if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) {
+ if (adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) {
vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
- le16_to_cpu(rx_desc->special) &
- IXGB_RX_DESC_SPECIAL_VLAN_MASK);
+ le16_to_cpu(rx_desc->special));
} else {
netif_receive_skb(skb);
}
-#else /* CONFIG_IXGB_NAPI */
- if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) {
- vlan_hwaccel_rx(skb, adapter->vlgrp,
- le16_to_cpu(rx_desc->special) &
- IXGB_RX_DESC_SPECIAL_VLAN_MASK);
- } else {
- netif_rx(skb);
- }
-#endif /* CONFIG_IXGB_NAPI */
- netdev->last_rx = jiffies;
rxdesc_done:
/* clean up descriptor, might be written over by hw */
rx_desc->status = 0;
+ /* return some buffers to hardware, one at a time is too slow */
+ if (unlikely(cleaned_count >= IXGB_RX_BUFFER_WRITE)) {
+ ixgb_alloc_rx_buffers(adapter, cleaned_count);
+ cleaned_count = 0;
+ }
+
/* use prefetched values */
rx_desc = next_rxd;
buffer_info = next_buffer;
rx_ring->next_to_clean = i;
- ixgb_alloc_rx_buffers(adapter);
+ cleaned_count = IXGB_DESC_UNUSED(rx_ring);
+ if (cleaned_count)
+ ixgb_alloc_rx_buffers(adapter, cleaned_count);
return cleaned;
}
**/
static void
-ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter)
+ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter, int cleaned_count)
{
struct ixgb_desc_ring *rx_ring = &adapter->rx_ring;
struct net_device *netdev = adapter->netdev;
struct ixgb_buffer *buffer_info;
struct sk_buff *skb;
unsigned int i;
- int num_group_tail_writes;
long cleancount;
i = rx_ring->next_to_use;
buffer_info = &rx_ring->buffer_info[i];
cleancount = IXGB_DESC_UNUSED(rx_ring);
- num_group_tail_writes = IXGB_RX_BUFFER_WRITE;
/* leave three descriptors unused */
- while(--cleancount > 2) {
+ while (--cleancount > 2 && cleaned_count--) {
/* recycle! its good for you */
skb = buffer_info->skb;
if (skb) {
goto map_skb;
}
- skb = netdev_alloc_skb(netdev, adapter->rx_buffer_len
- + NET_IP_ALIGN);
+ skb = netdev_alloc_skb_ip_align(netdev, adapter->rx_buffer_len);
if (unlikely(!skb)) {
/* Better luck next round */
adapter->alloc_rx_buff_failed++;
break;
}
- /* Make buffer alignment 2 beyond a 16 byte boundary
- * this will result in a 16 byte aligned IP header after
- * the 14 byte MAC header is removed
- */
- skb_reserve(skb, NET_IP_ALIGN);
-
buffer_info->skb = skb;
buffer_info->length = adapter->rx_buffer_len;
map_skb:
rx_desc = IXGB_RX_DESC(*rx_ring, i);
rx_desc->buff_addr = cpu_to_le64(buffer_info->dma);
/* guarantee DD bit not set now before h/w gets descriptor
- * this is the rest of the workaround for h/w double
+ * this is the rest of the workaround for h/w double
* writeback. */
rx_desc->status = 0;
- if(++i == rx_ring->count) i = 0;
+ if (++i == rx_ring->count) i = 0;
buffer_info = &rx_ring->buffer_info[i];
}
/**
* ixgb_vlan_rx_register - enables or disables vlan tagging/stripping.
- *
+ *
* @param netdev network interface device structure
* @param grp indicates to enable or disable tagging/stripping
**/
ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
{
struct ixgb_adapter *adapter = netdev_priv(netdev);
- uint32_t ctrl, rctl;
+ u32 ctrl, rctl;
ixgb_irq_disable(adapter);
adapter->vlgrp = grp;
- if(grp) {
+ if (grp) {
/* enable VLAN tag insert/strip */
ctrl = IXGB_READ_REG(&adapter->hw, CTRL0);
ctrl |= IXGB_CTRL0_VME;
/* enable VLAN receive filtering */
rctl = IXGB_READ_REG(&adapter->hw, RCTL);
- rctl |= IXGB_RCTL_VFE;
rctl &= ~IXGB_RCTL_CFIEN;
IXGB_WRITE_REG(&adapter->hw, RCTL, rctl);
} else {
ctrl = IXGB_READ_REG(&adapter->hw, CTRL0);
ctrl &= ~IXGB_CTRL0_VME;
IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl);
-
- /* disable VLAN filtering */
-
- rctl = IXGB_READ_REG(&adapter->hw, RCTL);
- rctl &= ~IXGB_RCTL_VFE;
- IXGB_WRITE_REG(&adapter->hw, RCTL, rctl);
}
- ixgb_irq_enable(adapter);
+ /* don't enable interrupts unless we are UP */
+ if (adapter->netdev->flags & IFF_UP)
+ ixgb_irq_enable(adapter);
}
static void
-ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
+ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
{
struct ixgb_adapter *adapter = netdev_priv(netdev);
- uint32_t vfta, index;
+ u32 vfta, index;
/* add VID to filter table */
}
static void
-ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
+ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
{
struct ixgb_adapter *adapter = netdev_priv(netdev);
- uint32_t vfta, index;
+ u32 vfta, index;
ixgb_irq_disable(adapter);
- if(adapter->vlgrp)
- adapter->vlgrp->vlan_devices[vid] = NULL;
+ vlan_group_set_device(adapter->vlgrp, vid, NULL);
- ixgb_irq_enable(adapter);
+ /* don't enable interrupts unless we are UP */
+ if (adapter->netdev->flags & IFF_UP)
+ ixgb_irq_enable(adapter);
- /* remove VID from filter table*/
+ /* remove VID from filter table */
index = (vid >> 5) & 0x7F;
vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index);
{
ixgb_vlan_rx_register(adapter->netdev, adapter->vlgrp);
- if(adapter->vlgrp) {
- uint16_t vid;
- for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
- if(!adapter->vlgrp->vlan_devices[vid])
+ if (adapter->vlgrp) {
+ u16 vid;
+ for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ if (!vlan_group_get_device(adapter->vlgrp, vid))
continue;
ixgb_vlan_rx_add_vid(adapter->netdev, vid);
}
struct ixgb_adapter *adapter = netdev_priv(dev);
disable_irq(adapter->pdev->irq);
- ixgb_intr(adapter->pdev->irq, dev, NULL);
+ ixgb_intr(adapter->pdev->irq, dev);
enable_irq(adapter->pdev->irq);
}
#endif
* This callback is called by the PCI subsystem whenever
* a PCI bus error is detected.
*/
-static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev,
- enum pci_channel_state state)
+static pci_ers_result_t ixgb_io_error_detected(struct pci_dev *pdev,
+ enum pci_channel_state state)
{
struct net_device *netdev = pci_get_drvdata(pdev);
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
- if(netif_running(netdev))
- ixgb_down(adapter, TRUE);
+ netif_device_detach(netdev);
+
+ if (state == pci_channel_io_perm_failure)
+ return PCI_ERS_RESULT_DISCONNECT;
+
+ if (netif_running(netdev))
+ ixgb_down(adapter, true);
pci_disable_device(pdev);
* ixgb_io_slot_reset - called after the pci bus has been reset.
* @pdev pointer to pci device with error
*
- * This callback is called after the PCI buss has been reset.
+ * This callback is called after the PCI bus has been reset.
* Basically, this tries to restart the card from scratch.
* This is a shortened version of the device probe/discovery code,
* it resembles the first-half of the ixgb_probe() routine.
*/
-static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev)
+static pci_ers_result_t ixgb_io_slot_reset(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
- if(pci_enable_device(pdev)) {
+ if (pci_enable_device(pdev)) {
DPRINTK(PROBE, ERR, "Cannot re-enable PCI device after reset.\n");
return PCI_ERS_RESULT_DISCONNECT;
}
ixgb_reset(adapter);
/* Make sure the EEPROM is good */
- if(!ixgb_validate_eeprom_checksum(&adapter->hw)) {
+ if (!ixgb_validate_eeprom_checksum(&adapter->hw)) {
DPRINTK(PROBE, ERR, "After reset, the EEPROM checksum is not valid.\n");
return PCI_ERS_RESULT_DISCONNECT;
}
ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr);
memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
- if(!is_valid_ether_addr(netdev->perm_addr)) {
+ if (!is_valid_ether_addr(netdev->perm_addr)) {
DPRINTK(PROBE, ERR, "After reset, invalid MAC address.\n");
return PCI_ERS_RESULT_DISCONNECT;
}
* normal operation. Implementation resembles the second-half
* of the ixgb_probe() routine.
*/
-static void ixgb_io_resume (struct pci_dev *pdev)
+static void ixgb_io_resume(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
pci_set_master(pdev);
- if(netif_running(netdev)) {
- if(ixgb_up(adapter)) {
+ if (netif_running(netdev)) {
+ if (ixgb_up(adapter)) {
printk ("ixgb: can't bring device back up after reset\n");
return;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff