{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 },
{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 },
{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 },
{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 },
{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 },
{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 },
static int igb_poll(struct napi_struct *, int);
static bool igb_clean_rx_irq_adv(struct igb_ring *, int *, int);
static void igb_alloc_rx_buffers_adv(struct igb_ring *, int);
+#ifdef CONFIG_IGB_LRO
+static int igb_get_skb_hdr(struct sk_buff *skb, void **, void **, u64 *, void *);
+#endif
static int igb_ioctl(struct net_device *, struct ifreq *, int cmd);
static void igb_tx_timeout(struct net_device *);
static void igb_reset_task(struct work_struct *);
return -ENOMEM;
}
+ adapter->rx_ring->buddy = adapter->tx_ring;
+
for (i = 0; i < adapter->num_tx_queues; i++) {
struct igb_ring *ring = &(adapter->tx_ring[i]);
ring->adapter = adapter;
return 0;
}
+static void igb_free_queues(struct igb_adapter *adapter)
+{
+ int i;
+
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ netif_napi_del(&adapter->rx_ring[i].napi);
+
+ kfree(adapter->tx_ring);
+ kfree(adapter->rx_ring);
+}
+
#define IGB_N0_QUEUE -1
static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue,
int tx_queue, int msix_vector)
array_wr32(E1000_MSIXBM(0), msix_vector, msixbm);
break;
case e1000_82576:
- /* Kawela uses a table-based method for assigning vectors.
+ /* The 82576 uses a table-based method for assigning vectors.
Each queue has a single entry in the table to which we write
a vector number along with a "valid" bit. Sadly, the layout
of the table is somewhat counterintuitive. */
igb_assign_vector(adapter, IGB_N0_QUEUE, i, vector++);
adapter->eims_enable_mask |= tx_ring->eims_value;
if (tx_ring->itr_val)
- writel(1000000000 / (tx_ring->itr_val * 256),
+ writel(tx_ring->itr_val,
hw->hw_addr + tx_ring->itr_register);
else
writel(1, hw->hw_addr + tx_ring->itr_register);
for (i = 0; i < adapter->num_rx_queues; i++) {
struct igb_ring *rx_ring = &adapter->rx_ring[i];
+ rx_ring->buddy = NULL;
igb_assign_vector(adapter, i, IGB_N0_QUEUE, vector++);
adapter->eims_enable_mask |= rx_ring->eims_value;
if (rx_ring->itr_val)
- writel(1000000000 / (rx_ring->itr_val * 256),
+ writel(rx_ring->itr_val,
hw->hw_addr + rx_ring->itr_register);
else
writel(1, hw->hw_addr + rx_ring->itr_register);
if (err)
goto out;
ring->itr_register = E1000_EITR(0) + (vector << 2);
- ring->itr_val = adapter->itr;
+ ring->itr_val = 976; /* ~4000 ints/sec */
vector++;
}
for (i = 0; i < adapter->num_rx_queues; i++) {
adapter->msix_entries,
numvecs);
if (err == 0)
- return;
+ goto out;
igb_reset_interrupt_capability(adapter);
adapter->num_tx_queues = 1;
if (!pci_enable_msi(adapter->pdev))
adapter->flags |= IGB_FLAG_HAS_MSI;
-
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+out:
/* Notify the stack of the (possibly) reduced Tx Queue count. */
- adapter->netdev->egress_subqueue_count = adapter->num_tx_queues;
-#endif
+ adapter->netdev->real_num_tx_queues = adapter->num_tx_queues;
return;
}
ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
}
-static void igb_init_manageability(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- if (adapter->en_mng_pt) {
- u32 manc2h = rd32(E1000_MANC2H);
- u32 manc = rd32(E1000_MANC);
-
- /* enable receiving management packets to the host */
- /* this will probably generate destination unreachable messages
- * from the host OS, but the packets will be handled on SMBUS */
- manc |= E1000_MANC_EN_MNG2HOST;
-#define E1000_MNG2HOST_PORT_623 (1 << 5)
-#define E1000_MNG2HOST_PORT_664 (1 << 6)
- manc2h |= E1000_MNG2HOST_PORT_623;
- manc2h |= E1000_MNG2HOST_PORT_664;
- wr32(E1000_MANC2H, manc2h);
-
- wr32(E1000_MANC, manc);
- }
-}
-
/**
* igb_configure - configure the hardware for RX and TX
* @adapter: private board structure
igb_set_multi(netdev);
igb_restore_vlan(adapter);
- igb_init_manageability(adapter);
igb_configure_tx(adapter);
igb_setup_rctl(adapter);
wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
/* flush and sleep below */
- netif_stop_queue(netdev);
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
- for (i = 0; i < adapter->num_tx_queues; i++)
- netif_stop_subqueue(netdev, i);
-#endif
+ netif_tx_stop_all_queues(netdev);
/* disable transmits in the hardware */
tctl = rd32(E1000_TCTL);
pci_save_state(pdev);
err = -ENOMEM;
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), IGB_MAX_TX_QUEUES);
-#else
- netdev = alloc_etherdev(sizeof(struct igb_adapter));
-#endif /* CONFIG_NETDEVICES_MULTIQUEUE */
if (!netdev)
goto err_alloc_etherdev;
netdev->features |= NETIF_F_TSO;
netdev->features |= NETIF_F_TSO6;
+#ifdef CONFIG_IGB_LRO
+ netdev->features |= NETIF_F_LRO;
+#endif
+
netdev->vlan_features |= NETIF_F_TSO;
netdev->vlan_features |= NETIF_F_TSO6;
netdev->vlan_features |= NETIF_F_HW_CSUM;
if (pci_using_dac)
netdev->features |= NETIF_F_HIGHDMA;
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
- netdev->features |= NETIF_F_MULTI_QUEUE;
-#endif
-
netdev->features |= NETIF_F_LLTX;
adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw);
if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1)
adapter->eeprom_wol = 0;
break;
- case E1000_DEV_ID_82576_QUAD_COPPER:
- /* if quad port adapter, disable WoL on all but port A */
- if (global_quad_port_a != 0)
- adapter->eeprom_wol = 0;
- else
- adapter->flags |= IGB_FLAG_QUAD_PORT_A;
- /* Reset for multiple quad port adapters */
- if (++global_quad_port_a == 4)
- global_quad_port_a = 0;
- break;
}
/* initialize the wol settings based on the eeprom settings */
/* tell the stack to leave us alone until igb_open() is called */
netif_carrier_off(netdev);
- netif_stop_queue(netdev);
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
- for (i = 0; i < adapter->num_tx_queues; i++)
- netif_stop_subqueue(netdev, i);
-#endif
+ netif_tx_stop_all_queues(netdev);
strcpy(netdev->name, "eth%d");
err = register_netdev(netdev);
iounmap(hw->flash_address);
igb_remove_device(hw);
- kfree(adapter->tx_ring);
- kfree(adapter->rx_ring);
+ igb_free_queues(adapter);
err_sw_init:
err_hw_init:
iounmap(hw->hw_addr);
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct igb_adapter *adapter = netdev_priv(netdev);
+#ifdef CONFIG_DCA
struct e1000_hw *hw = &adapter->hw;
+#endif
/* flush_scheduled work may reschedule our watchdog task, so
* explicitly disable watchdog tasks from being rescheduled */
unregister_netdev(netdev);
- if (!igb_check_reset_block(&adapter->hw))
+ if (adapter->hw.phy.ops.reset_phy &&
+ !igb_check_reset_block(&adapter->hw))
adapter->hw.phy.ops.reset_phy(&adapter->hw);
igb_remove_device(&adapter->hw);
igb_reset_interrupt_capability(adapter);
- kfree(adapter->tx_ring);
- kfree(adapter->rx_ring);
+ igb_free_queues(adapter);
iounmap(adapter->hw.hw_addr);
if (adapter->hw.flash_address)
/* Number of supported queues. */
/* Having more queues than CPUs doesn't make sense. */
adapter->num_rx_queues = min((u32)IGB_MAX_RX_QUEUES, (u32)num_online_cpus());
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
adapter->num_tx_queues = min(IGB_MAX_TX_QUEUES, num_online_cpus());
-#else
- adapter->num_tx_queues = 1;
-#endif /* CONFIG_NET_MULTI_QUEUE_DEVICE */
/* This call may decrease the number of queues depending on
* interrupt mode. */
igb_irq_enable(adapter);
+ netif_tx_start_all_queues(netdev);
+
/* Fire a link status change interrupt to start the watchdog. */
wr32(E1000_ICS, E1000_ICS_LSC);
static int igb_setup_all_tx_resources(struct igb_adapter *adapter)
{
int i, err = 0;
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
int r_idx;
-#endif
for (i = 0; i < adapter->num_tx_queues; i++) {
err = igb_setup_tx_resources(adapter, &adapter->tx_ring[i]);
}
}
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
for (i = 0; i < IGB_MAX_TX_QUEUES; i++) {
r_idx = i % adapter->num_tx_queues;
adapter->multi_tx_table[i] = &adapter->tx_ring[r_idx];
}
-#endif
return err;
}
struct pci_dev *pdev = adapter->pdev;
int size, desc_len;
+#ifdef CONFIG_IGB_LRO
+ size = sizeof(struct net_lro_desc) * MAX_LRO_DESCRIPTORS;
+ rx_ring->lro_mgr.lro_arr = vmalloc(size);
+ if (!rx_ring->lro_mgr.lro_arr)
+ goto err;
+ memset(rx_ring->lro_mgr.lro_arr, 0, size);
+#endif
+
size = sizeof(struct igb_buffer) * rx_ring->count;
rx_ring->buffer_info = vmalloc(size);
if (!rx_ring->buffer_info)
return 0;
err:
+#ifdef CONFIG_IGB_LRO
+ vfree(rx_ring->lro_mgr.lro_arr);
+ rx_ring->lro_mgr.lro_arr = NULL;
+#endif
vfree(rx_ring->buffer_info);
dev_err(&adapter->pdev->dev, "Unable to allocate memory for "
"the receive descriptor ring\n");
mdelay(10);
if (adapter->itr_setting > 3)
- wr32(E1000_ITR,
- 1000000000 / (adapter->itr * 256));
+ wr32(E1000_ITR, adapter->itr);
/* Setup the HW Rx Head and Tail Descriptor Pointers and
* the Base and Length of the Rx Descriptor Ring */
rxdctl |= IGB_RX_HTHRESH << 8;
rxdctl |= IGB_RX_WTHRESH << 16;
wr32(E1000_RXDCTL(i), rxdctl);
+#ifdef CONFIG_IGB_LRO
+ /* Intitial LRO Settings */
+ ring->lro_mgr.max_aggr = MAX_LRO_AGGR;
+ ring->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
+ ring->lro_mgr.get_skb_header = igb_get_skb_hdr;
+ ring->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
+ ring->lro_mgr.dev = adapter->netdev;
+ ring->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
+ ring->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
+#endif
}
if (adapter->num_rx_queues > 1) {
vfree(rx_ring->buffer_info);
rx_ring->buffer_info = NULL;
+#ifdef CONFIG_IGB_LRO
+ vfree(rx_ring->lro_mgr.lro_arr);
+ rx_ring->lro_mgr.lro_arr = NULL;
+#endif
+
pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
rx_ring->desc = NULL;
rctl = rd32(E1000_RCTL);
- if (netdev->flags & IFF_PROMISC)
+ if (netdev->flags & IFF_PROMISC) {
rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
- else if (netdev->flags & IFF_ALLMULTI) {
- rctl |= E1000_RCTL_MPE;
- rctl &= ~E1000_RCTL_UPE;
- } else
- rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
-
+ rctl &= ~E1000_RCTL_VFE;
+ } else {
+ if (netdev->flags & IFF_ALLMULTI) {
+ rctl |= E1000_RCTL_MPE;
+ rctl &= ~E1000_RCTL_UPE;
+ } else
+ rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
+ rctl |= E1000_RCTL_VFE;
+ }
wr32(E1000_RCTL, rctl);
if (!netdev->mc_count) {
struct igb_ring *tx_ring = adapter->tx_ring;
struct e1000_mac_info *mac = &adapter->hw.mac;
u32 link;
+ u32 eics = 0;
s32 ret_val;
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
int i;
-#endif
if ((netif_carrier_ok(netdev)) &&
(rd32(E1000_STATUS) & E1000_STATUS_LU))
}
netif_carrier_on(netdev);
- netif_wake_queue(netdev);
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
- for (i = 0; i < adapter->num_tx_queues; i++)
- netif_wake_subqueue(netdev, i);
-#endif
+ netif_tx_wake_all_queues(netdev);
if (!test_bit(__IGB_DOWN, &adapter->state))
mod_timer(&adapter->phy_info_timer,
adapter->link_duplex = 0;
dev_info(&adapter->pdev->dev, "NIC Link is Down\n");
netif_carrier_off(netdev);
- netif_stop_queue(netdev);
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
- for (i = 0; i < adapter->num_tx_queues; i++)
- netif_stop_subqueue(netdev, i);
-#endif
+ netif_tx_stop_all_queues(netdev);
if (!test_bit(__IGB_DOWN, &adapter->state))
mod_timer(&adapter->phy_info_timer,
round_jiffies(jiffies + 2 * HZ));
}
/* Cause software interrupt to ensure rx ring is cleaned */
- wr32(E1000_ICS, E1000_ICS_RXDMT0);
+ if (adapter->msix_entries) {
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ eics |= adapter->rx_ring[i].eims_value;
+ wr32(E1000_EICS, eics);
+ } else {
+ wr32(E1000_ICS, E1000_ICS_RXDMT0);
+ }
/* Force detection of hung controller every watchdog period */
tx_ring->detect_tx_hung = true;
};
-static void igb_lower_rx_eitr(struct igb_adapter *adapter,
- struct igb_ring *rx_ring)
+/**
+ * igb_update_ring_itr - update the dynamic ITR value based on packet size
+ *
+ * Stores a new ITR value based on strictly on packet size. This
+ * algorithm is less sophisticated than that used in igb_update_itr,
+ * due to the difficulty of synchronizing statistics across multiple
+ * receive rings. The divisors and thresholds used by this fuction
+ * were determined based on theoretical maximum wire speed and testing
+ * data, in order to minimize response time while increasing bulk
+ * throughput.
+ * This functionality is controlled by the InterruptThrottleRate module
+ * parameter (see igb_param.c)
+ * NOTE: This function is called only when operating in a multiqueue
+ * receive environment.
+ * @rx_ring: pointer to ring
+ **/
+static void igb_update_ring_itr(struct igb_ring *rx_ring)
{
- struct e1000_hw *hw = &adapter->hw;
- int new_val;
+ int new_val = rx_ring->itr_val;
+ int avg_wire_size = 0;
+ struct igb_adapter *adapter = rx_ring->adapter;
- new_val = rx_ring->itr_val / 2;
- if (new_val < IGB_MIN_DYN_ITR)
- new_val = IGB_MIN_DYN_ITR;
+ if (!rx_ring->total_packets)
+ goto clear_counts; /* no packets, so don't do anything */
- if (new_val != rx_ring->itr_val) {
- rx_ring->itr_val = new_val;
- wr32(rx_ring->itr_register,
- 1000000000 / (new_val * 256));
+ /* For non-gigabit speeds, just fix the interrupt rate at 4000
+ * ints/sec - ITR timer value of 120 ticks.
+ */
+ if (adapter->link_speed != SPEED_1000) {
+ new_val = 120;
+ goto set_itr_val;
}
-}
+ avg_wire_size = rx_ring->total_bytes / rx_ring->total_packets;
-static void igb_raise_rx_eitr(struct igb_adapter *adapter,
- struct igb_ring *rx_ring)
-{
- struct e1000_hw *hw = &adapter->hw;
- int new_val;
+ /* Add 24 bytes to size to account for CRC, preamble, and gap */
+ avg_wire_size += 24;
+
+ /* Don't starve jumbo frames */
+ avg_wire_size = min(avg_wire_size, 3000);
- new_val = rx_ring->itr_val * 2;
- if (new_val > IGB_MAX_DYN_ITR)
- new_val = IGB_MAX_DYN_ITR;
+ /* Give a little boost to mid-size frames */
+ if ((avg_wire_size > 300) && (avg_wire_size < 1200))
+ new_val = avg_wire_size / 3;
+ else
+ new_val = avg_wire_size / 2;
+set_itr_val:
if (new_val != rx_ring->itr_val) {
rx_ring->itr_val = new_val;
- wr32(rx_ring->itr_register,
- 1000000000 / (new_val * 256));
+ rx_ring->set_itr = 1;
}
+clear_counts:
+ rx_ring->total_bytes = 0;
+ rx_ring->total_packets = 0;
}
/**
return retval;
}
-static void igb_set_itr(struct igb_adapter *adapter, u16 itr_register,
- int rx_only)
+static void igb_set_itr(struct igb_adapter *adapter)
{
u16 current_itr;
u32 new_itr = adapter->itr;
adapter->rx_itr,
adapter->rx_ring->total_packets,
adapter->rx_ring->total_bytes);
- /* conservative mode (itr 3) eliminates the lowest_latency setting */
- if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
- adapter->rx_itr = low_latency;
- if (!rx_only) {
+ if (adapter->rx_ring->buddy) {
adapter->tx_itr = igb_update_itr(adapter,
adapter->tx_itr,
adapter->tx_ring->total_packets,
adapter->tx_ring->total_bytes);
- /* conservative mode (itr 3) eliminates the
- * lowest_latency setting */
- if (adapter->itr_setting == 3 &&
- adapter->tx_itr == lowest_latency)
- adapter->tx_itr = low_latency;
current_itr = max(adapter->rx_itr, adapter->tx_itr);
} else {
current_itr = adapter->rx_itr;
}
+ /* conservative mode (itr 3) eliminates the lowest_latency setting */
+ if (adapter->itr_setting == 3 &&
+ current_itr == lowest_latency)
+ current_itr = low_latency;
+
switch (current_itr) {
/* counts and packets in update_itr are dependent on these numbers */
case lowest_latency:
}
set_itr_now:
+ adapter->rx_ring->total_bytes = 0;
+ adapter->rx_ring->total_packets = 0;
+ if (adapter->rx_ring->buddy) {
+ adapter->rx_ring->buddy->total_bytes = 0;
+ adapter->rx_ring->buddy->total_packets = 0;
+ }
+
if (new_itr != adapter->itr) {
/* this attempts to bias the interrupt rate towards Bulk
* by adding intermediate steps when interrupt rate is
* ends up being correct.
*/
adapter->itr = new_itr;
- adapter->set_itr = 1;
+ adapter->rx_ring->itr_val = 1000000000 / (new_itr * 256);
+ adapter->rx_ring->set_itr = 1;
}
return;
{
struct igb_adapter *adapter = netdev_priv(netdev);
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
netif_stop_subqueue(netdev, tx_ring->queue_index);
-#else
- netif_stop_queue(netdev);
-#endif
/* Herbert's original patch had:
* smp_mb__after_netif_stop_queue();
return -EBUSY;
/* A reprieve! */
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
netif_wake_subqueue(netdev, tx_ring->queue_index);
-#else
- netif_wake_queue(netdev);
-#endif
++adapter->restart_queue;
return 0;
}
/* this is a hard error */
return NETDEV_TX_BUSY;
}
+ skb_orphan(skb);
if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
tx_flags |= IGB_TX_FLAGS_VLAN;
struct igb_adapter *adapter = netdev_priv(netdev);
struct igb_ring *tx_ring;
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
int r_idx = 0;
r_idx = skb->queue_mapping & (IGB_MAX_TX_QUEUES - 1);
tx_ring = adapter->multi_tx_table[r_idx];
-#else
- tx_ring = &adapter->tx_ring[0];
-#endif
-
/* This goes back to the question of how to logically map a tx queue
* to a flow. Right now, performance is impacted slightly negatively
struct igb_adapter *adapter = tx_ring->adapter;
struct e1000_hw *hw = &adapter->hw;
- if (!tx_ring->itr_val)
- wr32(E1000_EIMC, tx_ring->eims_value);
#ifdef CONFIG_DCA
if (adapter->flags & IGB_FLAG_DCA_ENABLED)
igb_update_tx_dca(tx_ring);
return IRQ_HANDLED;
}
+static void igb_write_itr(struct igb_ring *ring)
+{
+ struct e1000_hw *hw = &ring->adapter->hw;
+ if ((ring->adapter->itr_setting & 3) && ring->set_itr) {
+ switch (hw->mac.type) {
+ case e1000_82576:
+ wr32(ring->itr_register,
+ ring->itr_val |
+ 0x80000000);
+ break;
+ default:
+ wr32(ring->itr_register,
+ ring->itr_val |
+ (ring->itr_val << 16));
+ break;
+ }
+ ring->set_itr = 0;
+ }
+}
+
static irqreturn_t igb_msix_rx(int irq, void *data)
{
struct igb_ring *rx_ring = data;
struct igb_adapter *adapter = rx_ring->adapter;
- struct e1000_hw *hw = &adapter->hw;
/* Write the ITR value calculated at the end of the
* previous interrupt.
*/
- if (adapter->set_itr) {
- wr32(rx_ring->itr_register,
- 1000000000 / (rx_ring->itr_val * 256));
- adapter->set_itr = 0;
- }
+ igb_write_itr(rx_ring);
if (netif_rx_schedule_prep(adapter->netdev, &rx_ring->napi))
__netif_rx_schedule(adapter->netdev, &rx_ring->napi);
/* read ICR disables interrupts using IAM */
u32 icr = rd32(E1000_ICR);
- /* Write the ITR value calculated at the end of the
- * previous interrupt.
- */
- if (adapter->set_itr) {
- wr32(E1000_ITR, 1000000000 / (adapter->itr * 256));
- adapter->set_itr = 0;
- }
+ igb_write_itr(adapter->rx_ring);
if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
hw->mac.get_link_status = 1;
if (!icr)
return IRQ_NONE; /* Not our interrupt */
- /* Write the ITR value calculated at the end of the
- * previous interrupt.
- */
- if (adapter->set_itr) {
- wr32(E1000_ITR, 1000000000 / (adapter->itr * 256));
- adapter->set_itr = 0;
- }
+ igb_write_itr(adapter->rx_ring);
/* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
* not set, then the adapter didn't send an interrupt */
if ((tx_clean_complete && (work_done < budget)) ||
!netif_running(netdev)) {
if (adapter->itr_setting & 3)
- igb_set_itr(adapter, E1000_ITR, false);
+ igb_set_itr(adapter);
netif_rx_complete(netdev, napi);
if (!test_bit(__IGB_DOWN, &adapter->state))
igb_irq_enable(adapter);
quit_polling:
netif_rx_complete(netdev, napi);
- wr32(E1000_EIMS, rx_ring->eims_value);
- if ((adapter->itr_setting & 3) && !rx_ring->no_itr_adjust &&
- (rx_ring->total_packets > IGB_DYN_ITR_PACKET_THRESHOLD)) {
- int mean_size = rx_ring->total_bytes /
- rx_ring->total_packets;
- if (mean_size < IGB_DYN_ITR_LENGTH_LOW)
- igb_raise_rx_eitr(adapter, rx_ring);
- else if (mean_size > IGB_DYN_ITR_LENGTH_HIGH)
- igb_lower_rx_eitr(adapter, rx_ring);
+ if (adapter->itr_setting & 3) {
+ if (adapter->num_rx_queues == 1)
+ igb_set_itr(adapter);
+ else
+ igb_update_ring_itr(rx_ring);
}
if (!test_bit(__IGB_DOWN, &adapter->state))
* sees the new next_to_clean.
*/
smp_mb();
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
!(test_bit(__IGB_DOWN, &adapter->state))) {
netif_wake_subqueue(netdev, tx_ring->queue_index);
++adapter->restart_queue;
}
-#else
- if (netif_queue_stopped(netdev) &&
- !(test_bit(__IGB_DOWN, &adapter->state))) {
- netif_wake_queue(netdev);
- ++adapter->restart_queue;
- }
-#endif
}
if (tx_ring->detect_tx_hung) {
tx_ring->buffer_info[i].time_stamp,
jiffies,
tx_desc->upper.fields.status);
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
netif_stop_subqueue(netdev, tx_ring->queue_index);
-#else
- netif_stop_queue(netdev);
-#endif
}
}
tx_ring->total_bytes += total_bytes;
return retval;
}
+#ifdef CONFIG_IGB_LRO
+ /**
+ * igb_get_skb_hdr - helper function for LRO header processing
+ * @skb: pointer to sk_buff to be added to LRO packet
+ * @iphdr: pointer to ip header structure
+ * @tcph: pointer to tcp header structure
+ * @hdr_flags: pointer to header flags
+ * @priv: pointer to the receive descriptor for the current sk_buff
+ **/
+static int igb_get_skb_hdr(struct sk_buff *skb, void **iphdr, void **tcph,
+ u64 *hdr_flags, void *priv)
+{
+ union e1000_adv_rx_desc *rx_desc = priv;
+ u16 pkt_type = rx_desc->wb.lower.lo_dword.pkt_info &
+ (E1000_RXDADV_PKTTYPE_IPV4 | E1000_RXDADV_PKTTYPE_TCP);
+
+ /* Verify that this is a valid IPv4 TCP packet */
+ if (pkt_type != (E1000_RXDADV_PKTTYPE_IPV4 |
+ E1000_RXDADV_PKTTYPE_TCP))
+ return -1;
+
+ /* Set network headers */
+ skb_reset_network_header(skb);
+ skb_set_transport_header(skb, ip_hdrlen(skb));
+ *iphdr = ip_hdr(skb);
+ *tcph = tcp_hdr(skb);
+ *hdr_flags = LRO_IPV4 | LRO_TCP;
+
+ return 0;
+
+}
+#endif /* CONFIG_IGB_LRO */
/**
* igb_receive_skb - helper function to handle rx indications
- * @adapter: board private structure
+ * @ring: pointer to receive ring receving this packet
* @status: descriptor status field as written by hardware
* @vlan: descriptor vlan field as written by hardware (no le/be conversion)
* @skb: pointer to sk_buff to be indicated to stack
**/
-static void igb_receive_skb(struct igb_adapter *adapter, u8 status, __le16 vlan,
- struct sk_buff *skb)
+static void igb_receive_skb(struct igb_ring *ring, u8 status,
+ union e1000_adv_rx_desc * rx_desc,
+ struct sk_buff *skb)
{
- if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
- vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
- le16_to_cpu(vlan));
- else
- netif_receive_skb(skb);
+ struct igb_adapter * adapter = ring->adapter;
+ bool vlan_extracted = (adapter->vlgrp && (status & E1000_RXD_STAT_VP));
+
+#ifdef CONFIG_IGB_LRO
+ if (adapter->netdev->features & NETIF_F_LRO &&
+ skb->ip_summed == CHECKSUM_UNNECESSARY) {
+ if (vlan_extracted)
+ lro_vlan_hwaccel_receive_skb(&ring->lro_mgr, skb,
+ adapter->vlgrp,
+ le16_to_cpu(rx_desc->wb.upper.vlan),
+ rx_desc);
+ else
+ lro_receive_skb(&ring->lro_mgr,skb, rx_desc);
+ ring->lro_used = 1;
+ } else {
+#endif
+ if (vlan_extracted)
+ vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
+ le16_to_cpu(rx_desc->wb.upper.vlan));
+ else
+
+ netif_receive_skb(skb);
+#ifdef CONFIG_IGB_LRO
+ }
+#endif
}
dev_kfree_skb_irq(skb);
goto next_desc;
}
- rx_ring->no_itr_adjust |= (staterr & E1000_RXD_STAT_DYNINT);
total_bytes += skb->len;
total_packets++;
skb->protocol = eth_type_trans(skb, netdev);
- igb_receive_skb(adapter, staterr, rx_desc->wb.upper.vlan, skb);
+ igb_receive_skb(rx_ring, staterr, rx_desc, skb);
netdev->last_rx = jiffies;
rx_ring->next_to_clean = i;
cleaned_count = IGB_DESC_UNUSED(rx_ring);
+#ifdef CONFIG_IGB_LRO
+ if (rx_ring->lro_used) {
+ lro_flush_all(&rx_ring->lro_mgr);
+ rx_ring->lro_used = 0;
+ }
+#endif
+
if (cleaned_count)
igb_alloc_rx_buffers_adv(rx_ring, cleaned_count);
/* enable VLAN receive filtering */
rctl = rd32(E1000_RCTL);
- rctl |= E1000_RCTL_VFE;
rctl &= ~E1000_RCTL_CFIEN;
wr32(E1000_RCTL, rctl);
igb_update_mng_vlan(adapter);
ctrl &= ~E1000_CTRL_VME;
wr32(E1000_CTRL, ctrl);
- /* disable VLAN filtering */
- rctl = rd32(E1000_RCTL);
- rctl &= ~E1000_RCTL_VFE;
- wr32(E1000_RCTL, rctl);
if (adapter->mng_vlan_id != (u16)IGB_MNG_VLAN_NONE) {
igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
netif_device_detach(netdev);
- if (netif_running(netdev)) {
- WARN_ON(test_bit(__IGB_RESETTING, &adapter->state));
- igb_down(adapter);
- igb_free_irq(adapter);
- }
+ if (netif_running(netdev))
+ igb_close(netdev);
+
+ igb_reset_interrupt_capability(adapter);
+
+ igb_free_queues(adapter);
#ifdef CONFIG_PM
retval = pci_save_state(pdev);
pci_enable_wake(pdev, PCI_D3hot, 0);
pci_enable_wake(pdev, PCI_D3cold, 0);
- if (netif_running(netdev)) {
- err = igb_request_irq(adapter);
- if (err)
- return err;
+ igb_set_interrupt_capability(adapter);
+
+ if (igb_alloc_queues(adapter)) {
+ dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
+ return -ENOMEM;
}
/* e1000_power_up_phy(adapter); */
igb_reset(adapter);
wr32(E1000_WUS, ~0);
- igb_init_manageability(adapter);
-
- if (netif_running(netdev))
- igb_up(adapter);
+ if (netif_running(netdev)) {
+ err = igb_open(netdev);
+ if (err)
+ return err;
+ }
netif_device_attach(netdev);
struct net_device *netdev = pci_get_drvdata(pdev);
struct igb_adapter *adapter = netdev_priv(netdev);
- igb_init_manageability(adapter);
-
if (netif_running(netdev)) {
if (igb_up(adapter)) {
dev_err(&pdev->dev, "igb_up failed after reset\n");
Code Review / linux-2.6.git / blobdiff