/*******************************************************************************
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 "1.0.126-k4"DRIVERNAPI
+#define DRV_VERSION "1.0.135-k2" DRIVERNAPI
const char ixgb_driver_version[] = DRV_VERSION;
-static const char ixgb_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
+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
*
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, bool 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 irqreturn_t ixgb_intr(int irq, void *data);
static bool ixgb_clean_tx_irq(struct ixgb_adapter *adapter);
-#ifdef CONFIG_IXGB_NAPI
-static int ixgb_clean(struct napi_struct *napi, int budget);
-static bool ixgb_clean_rx_irq(struct ixgb_adapter *adapter,
- int *work_done, int work_to_do);
-#else
-static bool ixgb_clean_rx_irq(struct ixgb_adapter *adapter);
-#endif
-static void ixgb_alloc_rx_buffers(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 work_struct *work);
+
static void ixgb_vlan_rx_register(struct net_device *netdev,
- struct vlan_group *grp);
+ 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);
#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);
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
*
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);
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) {
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);
}
clear_bit(__IXGB_DOWN, &adapter->flags);
-#ifdef CONFIG_IXGB_NAPI
napi_enable(&adapter->napi);
-#endif
ixgb_irq_enable(adapter);
mod_timer(&adapter->watchdog_timer, jiffies);
/* prevent the interrupt handler from restarting watchdog */
set_bit(__IXGB_DOWN, &adapter->flags);
-#ifdef CONFIG_IXGB_NAPI
napi_disable(&adapter->napi);
-#endif
/* waiting for NAPI to complete can re-enable interrupts */
ixgb_irq_disable(adapter);
free_irq(adapter->pdev->irq, netdev);
if (adapter->have_msi)
pci_disable_msi(adapter->pdev);
- if(kill_watchdog)
+ if (kill_watchdog)
del_timer_sync(&adapter->watchdog_timer);
adapter->link_speed = 0;
**/
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_64BIT_MASK)) &&
+ !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) {
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_32BIT_MASK)) ||
+ (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) {
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;
}
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 = ioremap(pci_resource_start(pdev, BAR_0),
+ pci_resource_len(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;
}
ixgb_set_ethtool_ops(netdev);
netdev->tx_timeout = &ixgb_tx_timeout;
netdev->watchdog_timeo = 5 * HZ;
-#ifdef CONFIG_IXGB_NAPI
netif_napi_add(netdev, &adapter->napi, ixgb_clean, 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;
#endif
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_RX |
NETIF_F_HW_VLAN_FILTER;
netdev->features |= NETIF_F_TSO;
-#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;
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 */
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;
- 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;
/* 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;
return 0;
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;
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");
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;
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");
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;
struct ixgb_hw *hw = &adapter->hw;
u32 rctl;
u32 rxcsum;
- u32 rxdctl;
/* 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) {
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;
pci_unmap_page(pdev, buffer_info->dma, buffer_info->length,
PCI_DMA_TODEVICE);
+ /* okay to call kfree_skb here instead of kfree_skb_any because
+ * this is never called in interrupt context */
if (buffer_info->skb)
- dev_kfree_skb_any(buffer_info->skb);
+ dev_kfree_skb(buffer_info->skb);
buffer_info->skb = NULL;
buffer_info->dma = 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->skb) {
pci_unmap_single(pdev,
buffer_info->dma,
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);
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 {
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)) {
+ if (adapter->hw.link_up) {
+ if (!netif_carrier_ok(netdev)) {
DPRINTK(LINK, INFO,
"NIC Link is Up 10000 Mbps Full Duplex\n");
adapter->link_speed = 10000;
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");
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.
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;
unsigned int i;
u8 css, cso;
- if(likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
+ if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
struct ixgb_buffer *buffer_info;
css = skb_transport_offset(skb);
cso = css + skb->csum_offset;
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;
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
buffer_info->length = size;
WARN_ON(buffer_info->dma != 0);
+ buffer_info->time_stamp = jiffies;
buffer_info->dma =
pci_map_single(adapter->pdev,
skb->data + offset,
size,
PCI_DMA_TODEVICE);
- buffer_info->time_stamp = jiffies;
buffer_info->next_to_watch = 0;
len -= size;
offset += size;
count++;
- if(++i == tx_ring->count) i = 0;
+ 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;
- while(len) {
+ while (len) {
buffer_info = &tx_ring->buffer_info[i];
size = min(len, IXGB_MAX_DATA_PER_TXD);
size -= 4;
buffer_info->length = size;
+ buffer_info->time_stamp = jiffies;
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->next_to_watch = 0;
len -= size;
offset += size;
count++;
- if(++i == tx_ring->count) i = 0;
+ if (++i == tx_ring->count) i = 0;
}
}
i = (i == 0) ? tx_ring->count - 1 : i - 1;
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
struct ixgb_adapter *adapter = netdev_priv(netdev);
unsigned int first;
unsigned int tx_flags = 0;
- unsigned long flags;
int vlan_id = 0;
int tso;
return NETDEV_TX_OK;
}
- if(skb->len <= 0) {
- dev_kfree_skb_any(skb);
+ if (skb->len <= 0) {
+ dev_kfree_skb(skb);
return 0;
}
-#ifdef NETIF_F_LLTX
- if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) {
- /* Collision - tell upper layer to requeue */
- local_irq_restore(flags);
- return NETDEV_TX_LOCKED;
- }
-#else
- spin_lock_irqsave(&adapter->tx_lock, flags);
-#endif
-
if (unlikely(ixgb_maybe_stop_tx(netdev, &adapter->tx_ring,
- DESC_NEEDED))) {
- netif_stop_queue(netdev);
- spin_unlock_irqrestore(&adapter->tx_lock, flags);
+ 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,
netdev->trans_start = jiffies;
-#ifdef NETIF_F_LLTX
/* Make sure there is space in the ring for the next send. */
ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, DESC_NEEDED);
- spin_unlock_irqrestore(&adapter->tx_lock, flags);
-
-#endif
return NETDEV_TX_OK;
}
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;
}
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);
struct ixgb_adapter *adapter = netdev_priv(netdev);
struct ixgb_hw *hw = &adapter->hw;
u32 icr = IXGB_READ_REG(hw, ICR);
-#ifndef CONFIG_IXGB_NAPI
- unsigned int i;
-#endif
- if(unlikely(!icr))
+ if (unlikely(!icr))
return IRQ_NONE; /* Not our interrupt */
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, &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.
*/
IXGB_WRITE_REG(&adapter->hw, IMC, ~0);
__netif_rx_schedule(netdev, &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
/* If budget not fully consumed, exit the polling mode */
if (work_done < budget) {
netif_rx_complete(netdev, napi);
- ixgb_irq_enable(adapter);
+ if (!test_bit(__IXGB_DOWN, &adapter->flags))
+ ixgb_irq_enable(adapter);
}
return work_done;
}
-#endif
/**
* ixgb_clean_tx_irq - Reclaim resources after transmit completes
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; ) {
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);
*(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;
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++;
**/
static bool
-#ifdef CONFIG_IXGB_NAPI
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 ixgb_buffer *buffer_info, *next_buffer, *next2_buffer;
u32 length;
unsigned int i, j;
+ 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_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);
if (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));
+ 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));
- } 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;
/* leave three descriptors unused */
- while(--cleancount > 2) {
+ while (--cleancount > 2 && cleaned_count--) {
/* recycle! its good for you */
skb = buffer_info->skb;
if (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_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);
}
/* don't enable interrupts unless we are UP */
{
ixgb_vlan_rx_register(adapter->netdev, adapter->vlgrp);
- if(adapter->vlgrp) {
+ if (adapter->vlgrp) {
u16 vid;
- for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
- if(!vlan_group_get_device(adapter->vlgrp, 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);
}
* 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(netdev);
- if(netif_running(netdev))
+ 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(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(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;
}
projects / linux-2.6 / blobdiff