/* for netdump / net console */
static void igb_netpoll(struct net_device *);
#endif
-
#ifdef CONFIG_PCI_IOV
-static ssize_t igb_set_num_vfs(struct device *, struct device_attribute *,
- const char *, size_t);
-static ssize_t igb_show_num_vfs(struct device *, struct device_attribute *,
- char *);
-DEVICE_ATTR(num_vfs, S_IRUGO | S_IWUSR, igb_show_num_vfs, igb_set_num_vfs);
-#endif
+static unsigned int max_vfs = 0;
+module_param(max_vfs, uint, 0);
+MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate "
+ "per physical function");
+#endif /* CONFIG_PCI_IOV */
+
static pci_ers_result_t igb_io_error_detected(struct pci_dev *,
pci_channel_state_t);
static pci_ers_result_t igb_io_slot_reset(struct pci_dev *);
/* If we can't do MSI-X, try MSI */
msi_only:
+#ifdef CONFIG_PCI_IOV
+ /* disable SR-IOV for non MSI-X configurations */
+ if (adapter->vf_data) {
+ struct e1000_hw *hw = &adapter->hw;
+ /* disable iov and allow time for transactions to clear */
+ pci_disable_sriov(adapter->pdev);
+ msleep(500);
+
+ kfree(adapter->vf_data);
+ adapter->vf_data = NULL;
+ wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
+ msleep(100);
+ dev_info(&adapter->pdev->dev, "IOV Disabled\n");
+ }
+#endif
adapter->num_rx_queues = 1;
adapter->num_tx_queues = 1;
if (!pci_enable_msi(adapter->pdev))
rd32(E1000_ICR);
igb_irq_enable(adapter);
+ netif_tx_start_all_queues(adapter->netdev);
+
/* Fire a link change interrupt to start the watchdog. */
wr32(E1000_ICS, E1000_ICS_LSC);
return 0;
return err;
pci_using_dac = 0;
- err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
if (!err) {
- err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
if (!err)
pci_using_dac = 1;
} else {
- err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
if (err) {
- err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
if (err) {
dev_err(&pdev->dev, "No usable DMA "
"configuration, aborting\n");
if (err)
goto err_sw_init;
+#ifdef CONFIG_PCI_IOV
+ /* since iov functionality isn't critical to base device function we
+ * can accept failure. If it fails we don't allow iov to be enabled */
+ if (hw->mac.type == e1000_82576) {
+ /* 82576 supports a maximum of 7 VFs in addition to the PF */
+ unsigned int num_vfs = (max_vfs > 7) ? 7 : max_vfs;
+ int i;
+ unsigned char mac_addr[ETH_ALEN];
+
+ if (num_vfs) {
+ adapter->vf_data = kcalloc(num_vfs,
+ sizeof(struct vf_data_storage),
+ GFP_KERNEL);
+ if (!adapter->vf_data) {
+ dev_err(&pdev->dev,
+ "Could not allocate VF private data - "
+ "IOV enable failed\n");
+ } else {
+ err = pci_enable_sriov(pdev, num_vfs);
+ if (!err) {
+ adapter->vfs_allocated_count = num_vfs;
+ dev_info(&pdev->dev,
+ "%d vfs allocated\n",
+ num_vfs);
+ for (i = 0;
+ i < adapter->vfs_allocated_count;
+ i++) {
+ random_ether_addr(mac_addr);
+ igb_set_vf_mac(adapter, i,
+ mac_addr);
+ }
+ } else {
+ kfree(adapter->vf_data);
+ adapter->vf_data = NULL;
+ }
+ }
+ }
+ }
+
+#endif
/* setup the private structure */
err = igb_sw_init(adapter);
if (err)
if (pci_using_dac)
netdev->features |= NETIF_F_HIGHDMA;
+ if (adapter->hw.mac.type == e1000_82576)
+ netdev->features |= NETIF_F_SCTP_CSUM;
+
adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw);
/* before reading the NVM, reset the controller to put the device in a
igb_validate_mdi_setting(hw);
- adapter->rx_csum = 1;
-
/* Initial Wake on LAN setting If APM wake is enabled in the EEPROM,
* enable the ACPI Magic Packet filter
*/
* driver. */
igb_get_hw_control(adapter);
- /* tell the stack to leave us alone until igb_open() is called */
- netif_carrier_off(netdev);
- netif_tx_stop_all_queues(netdev);
-
strcpy(netdev->name, "eth%d");
err = register_netdev(netdev);
if (err)
goto err_register;
-#ifdef CONFIG_PCI_IOV
- /* since iov functionality isn't critical to base device function we
- * can accept failure. If it fails we don't allow iov to be enabled */
- if (hw->mac.type == e1000_82576) {
- err = pci_enable_sriov(pdev, 0);
- if (!err)
- err = device_create_file(&netdev->dev,
- &dev_attr_num_vfs);
- if (err)
- dev_err(&pdev->dev, "Failed to initialize IOV\n");
- }
+ /* carrier off reporting is important to ethtool even BEFORE open */
+ netif_carrier_off(netdev);
-#endif
#ifdef CONFIG_IGB_DCA
if (dca_add_requester(&pdev->dev) == 0) {
adapter->flags |= IGB_FLAG_DCA_ENABLED;
if (test_bit(__IGB_TESTING, &adapter->state))
return -EBUSY;
+ netif_carrier_off(netdev);
+
/* allocate transmit descriptors */
err = igb_setup_all_tx_resources(adapter);
if (err)
struct e1000_hw *hw = &adapter->hw;
u32 rctl;
u32 srrctl = 0;
- int i, j;
+ int i;
rctl = rd32(E1000_RCTL);
if (adapter->vfs_allocated_count) {
u32 vmolr;
- j = adapter->rx_ring[0].reg_idx;
-
/* set all queue drop enable bits */
wr32(E1000_QDE, ALL_QUEUES);
srrctl |= E1000_SRRCTL_DROP_EN;
/* disable queue 0 to prevent tail write w/o re-config */
wr32(E1000_RXDCTL(0), 0);
- vmolr = rd32(E1000_VMOLR(j));
+ vmolr = rd32(E1000_VMOLR(adapter->vfs_allocated_count));
if (rctl & E1000_RCTL_LPE)
vmolr |= E1000_VMOLR_LPE;
- if (adapter->num_rx_queues > 0)
+ if (adapter->num_rx_queues > 1)
vmolr |= E1000_VMOLR_RSSE;
- wr32(E1000_VMOLR(j), vmolr);
+ wr32(E1000_VMOLR(adapter->vfs_allocated_count), vmolr);
}
for (i = 0; i < adapter->num_rx_queues; i++) {
- j = adapter->rx_ring[i].reg_idx;
+ int j = adapter->rx_ring[i].reg_idx;
wr32(E1000_SRRCTL(j), srrctl);
}
mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX |
E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
-
wr32(E1000_MRQC, mrqc);
-
- /* Multiqueue and raw packet checksumming are mutually
- * exclusive. Note that this not the same as TCP/IP
- * checksumming, which works fine. */
- rxcsum = rd32(E1000_RXCSUM);
- rxcsum |= E1000_RXCSUM_PCSD;
- wr32(E1000_RXCSUM, rxcsum);
- } else {
+ } else if (adapter->vfs_allocated_count) {
/* Enable multi-queue for sr-iov */
- if (adapter->vfs_allocated_count)
- wr32(E1000_MRQC, E1000_MRQC_ENABLE_VMDQ);
- /* Enable Receive Checksum Offload for TCP and UDP */
- rxcsum = rd32(E1000_RXCSUM);
- if (adapter->rx_csum)
- rxcsum |= E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE;
- else
- rxcsum &= ~(E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE);
-
- wr32(E1000_RXCSUM, rxcsum);
+ wr32(E1000_MRQC, E1000_MRQC_ENABLE_VMDQ);
}
+ /* Enable Receive Checksum Offload for TCP and UDP */
+ rxcsum = rd32(E1000_RXCSUM);
+ /* Disable raw packet checksumming */
+ rxcsum |= E1000_RXCSUM_PCSD;
+
+ if (adapter->hw.mac.type == e1000_82576)
+ /* Enable Receive Checksum Offload for SCTP */
+ rxcsum |= E1000_RXCSUM_CRCOFL;
+
+ /* Don't need to set TUOFL or IPOFL, they default to 1 */
+ wr32(E1000_RXCSUM, rxcsum);
+
/* Set the default pool for the PF's first queue */
igb_configure_vt_default_pool(adapter);
}
netif_carrier_on(netdev);
- netif_tx_wake_all_queues(netdev);
igb_ping_all_vfs(adapter);
printk(KERN_INFO "igb: %s NIC Link is Down\n",
netdev->name);
netif_carrier_off(netdev);
- netif_tx_stop_all_queues(netdev);
igb_ping_all_vfs(adapter);
* (Do the reset outside of interrupt context). */
adapter->tx_timeout_count++;
schedule_work(&adapter->reset_task);
+ /* return immediately since reset is imminent */
+ return;
}
}
switch (current_itr) {
/* counts and packets in update_itr are dependent on these numbers */
case lowest_latency:
- new_itr = 70000;
+ new_itr = 56; /* aka 70,000 ints/sec */
break;
case low_latency:
- new_itr = 20000; /* aka hwitr = ~200 */
+ new_itr = 196; /* aka 20,000 ints/sec */
break;
case bulk_latency:
- new_itr = 4000;
+ new_itr = 980; /* aka 4,000 ints/sec */
break;
default:
break;
* by adding intermediate steps when interrupt rate is
* increasing */
new_itr = new_itr > adapter->itr ?
- min(adapter->itr + (new_itr >> 2), new_itr) :
+ max((new_itr * adapter->itr) /
+ (new_itr + (adapter->itr >> 2)), new_itr) :
new_itr;
/* Don't write the value here; it resets the adapter's
* internal timer, and causes us to delay far longer than
* ends up being correct.
*/
adapter->itr = new_itr;
- adapter->rx_ring->itr_val = 1000000000 / (new_itr * 256);
+ adapter->rx_ring->itr_val = new_itr;
adapter->rx_ring->set_itr = 1;
}
tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
if (ip_hdr(skb)->protocol == IPPROTO_TCP)
tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+ else if (ip_hdr(skb)->protocol == IPPROTO_SCTP)
+ tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP;
break;
case cpu_to_be16(ETH_P_IPV6):
/* XXX what about other V6 headers?? */
if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+ else if (ipv6_hdr(skb)->nexthdr == IPPROTO_SCTP)
+ tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP;
break;
default:
if (unlikely(net_ratelimit()))
bool vlan_extracted = (adapter->vlgrp && (status & E1000_RXD_STAT_VP));
skb_record_rx_queue(skb, ring->queue_index);
- if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
- if (vlan_extracted)
- vlan_gro_receive(&ring->napi, adapter->vlgrp,
- le16_to_cpu(rx_desc->wb.upper.vlan),
- skb);
- else
- napi_gro_receive(&ring->napi, skb);
- } else {
- if (vlan_extracted)
- vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
- le16_to_cpu(rx_desc->wb.upper.vlan));
- else
- netif_receive_skb(skb);
- }
+ if (vlan_extracted)
+ vlan_gro_receive(&ring->napi, adapter->vlgrp,
+ le16_to_cpu(rx_desc->wb.upper.vlan),
+ skb);
+ else
+ napi_gro_receive(&ring->napi, skb);
}
static inline void igb_rx_checksum_adv(struct igb_adapter *adapter,
skb->ip_summed = CHECKSUM_NONE;
/* Ignore Checksum bit is set or checksum is disabled through ethtool */
- if ((status_err & E1000_RXD_STAT_IXSM) || !adapter->rx_csum)
+ if ((status_err & E1000_RXD_STAT_IXSM) ||
+ (adapter->flags & IGB_FLAG_RX_CSUM_DISABLED))
return;
/* TCP/UDP checksum error bit is set */
if (status_err &
(E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) {
+ /*
+ * work around errata with sctp packets where the TCPE aka
+ * L4E bit is set incorrectly on 64 byte (60 byte w/o crc)
+ * packets, (aka let the stack check the crc32c)
+ */
+ if (!((adapter->hw.mac.type == e1000_82576) &&
+ (skb->len == 60)))
+ adapter->hw_csum_err++;
/* let the stack verify checksum errors */
- adapter->hw_csum_err++;
return;
}
/* It must be a TCP or UDP packet with a valid checksum */
if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))
skb->ip_summed = CHECKSUM_UNNECESSARY;
+ dev_dbg(&adapter->pdev->dev, "cksum success: bits %08X\n", status_err);
adapter->hw_csum_good++;
}
igb_vmdq_set_replication_pf(hw, true);
}
-#ifdef CONFIG_PCI_IOV
-static ssize_t igb_show_num_vfs(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct igb_adapter *adapter = netdev_priv(to_net_dev(dev));
-
- return sprintf(buf, "%d\n", adapter->vfs_allocated_count);
-}
-
-static ssize_t igb_set_num_vfs(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct net_device *netdev = to_net_dev(dev);
- struct igb_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct pci_dev *pdev = adapter->pdev;
- unsigned int num_vfs, i;
- unsigned char mac_addr[ETH_ALEN];
- int err;
-
- sscanf(buf, "%u", &num_vfs);
-
- if (num_vfs > 7)
- num_vfs = 7;
-
- /* value unchanged do nothing */
- if (num_vfs == adapter->vfs_allocated_count)
- return count;
-
- if (netdev->flags & IFF_UP)
- igb_close(netdev);
-
- igb_reset_interrupt_capability(adapter);
- igb_free_queues(adapter);
- adapter->tx_ring = NULL;
- adapter->rx_ring = NULL;
- adapter->vfs_allocated_count = 0;
-
- /* reclaim resources allocated to VFs since we are changing count */
- if (adapter->vf_data) {
- /* disable iov and allow time for transactions to clear */
- pci_disable_sriov(pdev);
- msleep(500);
-
- kfree(adapter->vf_data);
- adapter->vf_data = NULL;
- wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
- msleep(100);
- dev_info(&pdev->dev, "IOV Disabled\n");
- }
-
- if (num_vfs) {
- adapter->vf_data = kcalloc(num_vfs,
- sizeof(struct vf_data_storage),
- GFP_KERNEL);
- if (!adapter->vf_data) {
- dev_err(&pdev->dev, "Could not allocate VF private "
- "data - IOV enable failed\n");
- } else {
- err = pci_enable_sriov(pdev, num_vfs);
- if (!err) {
- adapter->vfs_allocated_count = num_vfs;
- dev_info(&pdev->dev, "%d vfs allocated\n", num_vfs);
- for (i = 0; i < adapter->vfs_allocated_count; i++) {
- random_ether_addr(mac_addr);
- igb_set_vf_mac(adapter, i, mac_addr);
- }
- } else {
- kfree(adapter->vf_data);
- adapter->vf_data = NULL;
- }
- }
- }
-
- igb_set_interrupt_capability(adapter);
- igb_alloc_queues(adapter);
- igb_reset(adapter);
-
- if (netdev->flags & IFF_UP)
- igb_open(netdev);
-
- return count;
-}
-#endif /* CONFIG_PCI_IOV */
/* igb_main.c */
git.openpandora.org / pandora-kernel.git / blobdiff