+++ /dev/null
-/*******************************************************************************
-
- Intel(R) 82576 Virtual Function Linux driver
- Copyright(c) 2009 - 2010 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,
- version 2, as published by the Free Software Foundation.
-
- This program is distributed in the hope it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- more details.
-
- You should have received a copy of the GNU General Public License along with
- this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
-
- The full GNU General Public License is included in this distribution in
- the file called "COPYING".
-
- Contact Information:
- e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
-
-*******************************************************************************/
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/vmalloc.h>
-#include <linux/pagemap.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/tcp.h>
-#include <linux/ipv6.h>
-#include <linux/slab.h>
-#include <net/checksum.h>
-#include <net/ip6_checksum.h>
-#include <linux/mii.h>
-#include <linux/ethtool.h>
-#include <linux/if_vlan.h>
-#include <linux/prefetch.h>
-
-#include "igbvf.h"
-
-#define DRV_VERSION "2.0.0-k"
-char igbvf_driver_name[] = "igbvf";
-const char igbvf_driver_version[] = DRV_VERSION;
-static const char igbvf_driver_string[] =
- "Intel(R) Virtual Function Network Driver";
-static const char igbvf_copyright[] =
- "Copyright (c) 2009 - 2010 Intel Corporation.";
-
-static int igbvf_poll(struct napi_struct *napi, int budget);
-static void igbvf_reset(struct igbvf_adapter *);
-static void igbvf_set_interrupt_capability(struct igbvf_adapter *);
-static void igbvf_reset_interrupt_capability(struct igbvf_adapter *);
-
-static struct igbvf_info igbvf_vf_info = {
- .mac = e1000_vfadapt,
- .flags = 0,
- .pba = 10,
- .init_ops = e1000_init_function_pointers_vf,
-};
-
-static struct igbvf_info igbvf_i350_vf_info = {
- .mac = e1000_vfadapt_i350,
- .flags = 0,
- .pba = 10,
- .init_ops = e1000_init_function_pointers_vf,
-};
-
-static const struct igbvf_info *igbvf_info_tbl[] = {
- [board_vf] = &igbvf_vf_info,
- [board_i350_vf] = &igbvf_i350_vf_info,
-};
-
-/**
- * igbvf_desc_unused - calculate if we have unused descriptors
- **/
-static int igbvf_desc_unused(struct igbvf_ring *ring)
-{
- if (ring->next_to_clean > ring->next_to_use)
- return ring->next_to_clean - ring->next_to_use - 1;
-
- return ring->count + ring->next_to_clean - ring->next_to_use - 1;
-}
-
-/**
- * igbvf_receive_skb - helper function to handle Rx indications
- * @adapter: board private structure
- * @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 igbvf_receive_skb(struct igbvf_adapter *adapter,
- struct net_device *netdev,
- struct sk_buff *skb,
- u32 status, u16 vlan)
-{
- if (status & E1000_RXD_STAT_VP) {
- u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
-
- __vlan_hwaccel_put_tag(skb, vid);
- }
- netif_receive_skb(skb);
-}
-
-static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter,
- u32 status_err, struct sk_buff *skb)
-{
- skb_checksum_none_assert(skb);
-
- /* Ignore Checksum bit is set or checksum is disabled through ethtool */
- if ((status_err & E1000_RXD_STAT_IXSM) ||
- (adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED))
- return;
-
- /* TCP/UDP checksum error bit is set */
- if (status_err &
- (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) {
- /* 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;
-
- adapter->hw_csum_good++;
-}
-
-/**
- * igbvf_alloc_rx_buffers - Replace used receive buffers; packet split
- * @rx_ring: address of ring structure to repopulate
- * @cleaned_count: number of buffers to repopulate
- **/
-static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring,
- int cleaned_count)
-{
- struct igbvf_adapter *adapter = rx_ring->adapter;
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
- union e1000_adv_rx_desc *rx_desc;
- struct igbvf_buffer *buffer_info;
- struct sk_buff *skb;
- unsigned int i;
- int bufsz;
-
- i = rx_ring->next_to_use;
- buffer_info = &rx_ring->buffer_info[i];
-
- if (adapter->rx_ps_hdr_size)
- bufsz = adapter->rx_ps_hdr_size;
- else
- bufsz = adapter->rx_buffer_len;
-
- while (cleaned_count--) {
- rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i);
-
- if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) {
- if (!buffer_info->page) {
- buffer_info->page = alloc_page(GFP_ATOMIC);
- if (!buffer_info->page) {
- adapter->alloc_rx_buff_failed++;
- goto no_buffers;
- }
- buffer_info->page_offset = 0;
- } else {
- buffer_info->page_offset ^= PAGE_SIZE / 2;
- }
- buffer_info->page_dma =
- dma_map_page(&pdev->dev, buffer_info->page,
- buffer_info->page_offset,
- PAGE_SIZE / 2,
- DMA_FROM_DEVICE);
- }
-
- if (!buffer_info->skb) {
- skb = netdev_alloc_skb_ip_align(netdev, bufsz);
- if (!skb) {
- adapter->alloc_rx_buff_failed++;
- goto no_buffers;
- }
-
- buffer_info->skb = skb;
- buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
- bufsz,
- DMA_FROM_DEVICE);
- }
- /* Refresh the desc even if buffer_addrs didn't change because
- * each write-back erases this info. */
- if (adapter->rx_ps_hdr_size) {
- rx_desc->read.pkt_addr =
- cpu_to_le64(buffer_info->page_dma);
- rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma);
- } else {
- rx_desc->read.pkt_addr =
- cpu_to_le64(buffer_info->dma);
- rx_desc->read.hdr_addr = 0;
- }
-
- i++;
- if (i == rx_ring->count)
- i = 0;
- buffer_info = &rx_ring->buffer_info[i];
- }
-
-no_buffers:
- if (rx_ring->next_to_use != i) {
- rx_ring->next_to_use = i;
- if (i == 0)
- i = (rx_ring->count - 1);
- else
- i--;
-
- /* Force memory writes to complete before letting h/w
- * know there are new descriptors to fetch. (Only
- * applicable for weak-ordered memory model archs,
- * such as IA-64). */
- wmb();
- writel(i, adapter->hw.hw_addr + rx_ring->tail);
- }
-}
-
-/**
- * igbvf_clean_rx_irq - Send received data up the network stack; legacy
- * @adapter: board private structure
- *
- * the return value indicates whether actual cleaning was done, there
- * is no guarantee that everything was cleaned
- **/
-static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter,
- int *work_done, int work_to_do)
-{
- struct igbvf_ring *rx_ring = adapter->rx_ring;
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
- union e1000_adv_rx_desc *rx_desc, *next_rxd;
- struct igbvf_buffer *buffer_info, *next_buffer;
- struct sk_buff *skb;
- bool cleaned = false;
- int cleaned_count = 0;
- unsigned int total_bytes = 0, total_packets = 0;
- unsigned int i;
- u32 length, hlen, staterr;
-
- i = rx_ring->next_to_clean;
- rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i);
- staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
-
- while (staterr & E1000_RXD_STAT_DD) {
- if (*work_done >= work_to_do)
- break;
- (*work_done)++;
- rmb(); /* read descriptor and rx_buffer_info after status DD */
-
- buffer_info = &rx_ring->buffer_info[i];
-
- /* HW will not DMA in data larger than the given buffer, even
- * if it parses the (NFS, of course) header to be larger. In
- * that case, it fills the header buffer and spills the rest
- * into the page.
- */
- hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info) &
- E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT;
- if (hlen > adapter->rx_ps_hdr_size)
- hlen = adapter->rx_ps_hdr_size;
-
- length = le16_to_cpu(rx_desc->wb.upper.length);
- cleaned = true;
- cleaned_count++;
-
- skb = buffer_info->skb;
- prefetch(skb->data - NET_IP_ALIGN);
- buffer_info->skb = NULL;
- if (!adapter->rx_ps_hdr_size) {
- dma_unmap_single(&pdev->dev, buffer_info->dma,
- adapter->rx_buffer_len,
- DMA_FROM_DEVICE);
- buffer_info->dma = 0;
- skb_put(skb, length);
- goto send_up;
- }
-
- if (!skb_shinfo(skb)->nr_frags) {
- dma_unmap_single(&pdev->dev, buffer_info->dma,
- adapter->rx_ps_hdr_size,
- DMA_FROM_DEVICE);
- skb_put(skb, hlen);
- }
-
- if (length) {
- dma_unmap_page(&pdev->dev, buffer_info->page_dma,
- PAGE_SIZE / 2,
- DMA_FROM_DEVICE);
- buffer_info->page_dma = 0;
-
- skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
- buffer_info->page,
- buffer_info->page_offset,
- length);
-
- if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) ||
- (page_count(buffer_info->page) != 1))
- buffer_info->page = NULL;
- else
- get_page(buffer_info->page);
-
- skb->len += length;
- skb->data_len += length;
- skb->truesize += length;
- }
-send_up:
- i++;
- if (i == rx_ring->count)
- i = 0;
- next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i);
- prefetch(next_rxd);
- next_buffer = &rx_ring->buffer_info[i];
-
- if (!(staterr & E1000_RXD_STAT_EOP)) {
- buffer_info->skb = next_buffer->skb;
- buffer_info->dma = next_buffer->dma;
- next_buffer->skb = skb;
- next_buffer->dma = 0;
- goto next_desc;
- }
-
- if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
- dev_kfree_skb_irq(skb);
- goto next_desc;
- }
-
- total_bytes += skb->len;
- total_packets++;
-
- igbvf_rx_checksum_adv(adapter, staterr, skb);
-
- skb->protocol = eth_type_trans(skb, netdev);
-
- igbvf_receive_skb(adapter, netdev, skb, staterr,
- rx_desc->wb.upper.vlan);
-
-next_desc:
- rx_desc->wb.upper.status_error = 0;
-
- /* return some buffers to hardware, one at a time is too slow */
- if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) {
- igbvf_alloc_rx_buffers(rx_ring, cleaned_count);
- cleaned_count = 0;
- }
-
- /* use prefetched values */
- rx_desc = next_rxd;
- buffer_info = next_buffer;
-
- staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
- }
-
- rx_ring->next_to_clean = i;
- cleaned_count = igbvf_desc_unused(rx_ring);
-
- if (cleaned_count)
- igbvf_alloc_rx_buffers(rx_ring, cleaned_count);
-
- adapter->total_rx_packets += total_packets;
- adapter->total_rx_bytes += total_bytes;
- adapter->net_stats.rx_bytes += total_bytes;
- adapter->net_stats.rx_packets += total_packets;
- return cleaned;
-}
-
-static void igbvf_put_txbuf(struct igbvf_adapter *adapter,
- struct igbvf_buffer *buffer_info)
-{
- if (buffer_info->dma) {
- if (buffer_info->mapped_as_page)
- dma_unmap_page(&adapter->pdev->dev,
- buffer_info->dma,
- buffer_info->length,
- DMA_TO_DEVICE);
- else
- dma_unmap_single(&adapter->pdev->dev,
- buffer_info->dma,
- buffer_info->length,
- DMA_TO_DEVICE);
- buffer_info->dma = 0;
- }
- if (buffer_info->skb) {
- dev_kfree_skb_any(buffer_info->skb);
- buffer_info->skb = NULL;
- }
- buffer_info->time_stamp = 0;
-}
-
-/**
- * igbvf_setup_tx_resources - allocate Tx resources (Descriptors)
- * @adapter: board private structure
- *
- * Return 0 on success, negative on failure
- **/
-int igbvf_setup_tx_resources(struct igbvf_adapter *adapter,
- struct igbvf_ring *tx_ring)
-{
- struct pci_dev *pdev = adapter->pdev;
- int size;
-
- size = sizeof(struct igbvf_buffer) * tx_ring->count;
- tx_ring->buffer_info = vzalloc(size);
- if (!tx_ring->buffer_info)
- goto err;
-
- /* round up to nearest 4K */
- tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc);
- tx_ring->size = ALIGN(tx_ring->size, 4096);
-
- tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
- &tx_ring->dma, GFP_KERNEL);
-
- if (!tx_ring->desc)
- goto err;
-
- tx_ring->adapter = adapter;
- tx_ring->next_to_use = 0;
- tx_ring->next_to_clean = 0;
-
- return 0;
-err:
- vfree(tx_ring->buffer_info);
- dev_err(&adapter->pdev->dev,
- "Unable to allocate memory for the transmit descriptor ring\n");
- return -ENOMEM;
-}
-
-/**
- * igbvf_setup_rx_resources - allocate Rx resources (Descriptors)
- * @adapter: board private structure
- *
- * Returns 0 on success, negative on failure
- **/
-int igbvf_setup_rx_resources(struct igbvf_adapter *adapter,
- struct igbvf_ring *rx_ring)
-{
- struct pci_dev *pdev = adapter->pdev;
- int size, desc_len;
-
- size = sizeof(struct igbvf_buffer) * rx_ring->count;
- rx_ring->buffer_info = vzalloc(size);
- if (!rx_ring->buffer_info)
- goto err;
-
- desc_len = sizeof(union e1000_adv_rx_desc);
-
- /* Round up to nearest 4K */
- rx_ring->size = rx_ring->count * desc_len;
- rx_ring->size = ALIGN(rx_ring->size, 4096);
-
- rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
- &rx_ring->dma, GFP_KERNEL);
-
- if (!rx_ring->desc)
- goto err;
-
- rx_ring->next_to_clean = 0;
- rx_ring->next_to_use = 0;
-
- rx_ring->adapter = adapter;
-
- return 0;
-
-err:
- vfree(rx_ring->buffer_info);
- rx_ring->buffer_info = NULL;
- dev_err(&adapter->pdev->dev,
- "Unable to allocate memory for the receive descriptor ring\n");
- return -ENOMEM;
-}
-
-/**
- * igbvf_clean_tx_ring - Free Tx Buffers
- * @tx_ring: ring to be cleaned
- **/
-static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring)
-{
- struct igbvf_adapter *adapter = tx_ring->adapter;
- struct igbvf_buffer *buffer_info;
- unsigned long size;
- unsigned int i;
-
- if (!tx_ring->buffer_info)
- return;
-
- /* Free all the Tx ring sk_buffs */
- for (i = 0; i < tx_ring->count; i++) {
- buffer_info = &tx_ring->buffer_info[i];
- igbvf_put_txbuf(adapter, buffer_info);
- }
-
- size = sizeof(struct igbvf_buffer) * tx_ring->count;
- memset(tx_ring->buffer_info, 0, size);
-
- /* Zero out the descriptor ring */
- memset(tx_ring->desc, 0, tx_ring->size);
-
- tx_ring->next_to_use = 0;
- tx_ring->next_to_clean = 0;
-
- writel(0, adapter->hw.hw_addr + tx_ring->head);
- writel(0, adapter->hw.hw_addr + tx_ring->tail);
-}
-
-/**
- * igbvf_free_tx_resources - Free Tx Resources per Queue
- * @tx_ring: ring to free resources from
- *
- * Free all transmit software resources
- **/
-void igbvf_free_tx_resources(struct igbvf_ring *tx_ring)
-{
- struct pci_dev *pdev = tx_ring->adapter->pdev;
-
- igbvf_clean_tx_ring(tx_ring);
-
- vfree(tx_ring->buffer_info);
- tx_ring->buffer_info = NULL;
-
- dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
- tx_ring->dma);
-
- tx_ring->desc = NULL;
-}
-
-/**
- * igbvf_clean_rx_ring - Free Rx Buffers per Queue
- * @adapter: board private structure
- **/
-static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring)
-{
- struct igbvf_adapter *adapter = rx_ring->adapter;
- struct igbvf_buffer *buffer_info;
- struct pci_dev *pdev = adapter->pdev;
- unsigned long size;
- unsigned int i;
-
- if (!rx_ring->buffer_info)
- return;
-
- /* Free all the Rx ring sk_buffs */
- for (i = 0; i < rx_ring->count; i++) {
- buffer_info = &rx_ring->buffer_info[i];
- if (buffer_info->dma) {
- if (adapter->rx_ps_hdr_size){
- dma_unmap_single(&pdev->dev, buffer_info->dma,
- adapter->rx_ps_hdr_size,
- DMA_FROM_DEVICE);
- } else {
- dma_unmap_single(&pdev->dev, buffer_info->dma,
- adapter->rx_buffer_len,
- DMA_FROM_DEVICE);
- }
- buffer_info->dma = 0;
- }
-
- if (buffer_info->skb) {
- dev_kfree_skb(buffer_info->skb);
- buffer_info->skb = NULL;
- }
-
- if (buffer_info->page) {
- if (buffer_info->page_dma)
- dma_unmap_page(&pdev->dev,
- buffer_info->page_dma,
- PAGE_SIZE / 2,
- DMA_FROM_DEVICE);
- put_page(buffer_info->page);
- buffer_info->page = NULL;
- buffer_info->page_dma = 0;
- buffer_info->page_offset = 0;
- }
- }
-
- size = sizeof(struct igbvf_buffer) * rx_ring->count;
- memset(rx_ring->buffer_info, 0, size);
-
- /* Zero out the descriptor ring */
- memset(rx_ring->desc, 0, rx_ring->size);
-
- rx_ring->next_to_clean = 0;
- rx_ring->next_to_use = 0;
-
- writel(0, adapter->hw.hw_addr + rx_ring->head);
- writel(0, adapter->hw.hw_addr + rx_ring->tail);
-}
-
-/**
- * igbvf_free_rx_resources - Free Rx Resources
- * @rx_ring: ring to clean the resources from
- *
- * Free all receive software resources
- **/
-
-void igbvf_free_rx_resources(struct igbvf_ring *rx_ring)
-{
- struct pci_dev *pdev = rx_ring->adapter->pdev;
-
- igbvf_clean_rx_ring(rx_ring);
-
- vfree(rx_ring->buffer_info);
- rx_ring->buffer_info = NULL;
-
- dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
- rx_ring->dma);
- rx_ring->desc = NULL;
-}
-
-/**
- * igbvf_update_itr - update the dynamic ITR value based on statistics
- * @adapter: pointer to adapter
- * @itr_setting: current adapter->itr
- * @packets: the number of packets during this measurement interval
- * @bytes: the number of bytes during this measurement interval
- *
- * Stores a new ITR value based on packets and byte
- * counts during the last interrupt. The advantage of per interrupt
- * computation is faster updates and more accurate ITR for the current
- * traffic pattern. Constants in this function were computed
- * based on theoretical maximum wire speed and thresholds were set based
- * on testing data as well as attempting to minimize response time
- * while increasing bulk throughput. This functionality is controlled
- * by the InterruptThrottleRate module parameter.
- **/
-static unsigned int igbvf_update_itr(struct igbvf_adapter *adapter,
- u16 itr_setting, int packets,
- int bytes)
-{
- unsigned int retval = itr_setting;
-
- if (packets == 0)
- goto update_itr_done;
-
- switch (itr_setting) {
- case lowest_latency:
- /* handle TSO and jumbo frames */
- if (bytes/packets > 8000)
- retval = bulk_latency;
- else if ((packets < 5) && (bytes > 512))
- retval = low_latency;
- break;
- case low_latency: /* 50 usec aka 20000 ints/s */
- if (bytes > 10000) {
- /* this if handles the TSO accounting */
- if (bytes/packets > 8000)
- retval = bulk_latency;
- else if ((packets < 10) || ((bytes/packets) > 1200))
- retval = bulk_latency;
- else if ((packets > 35))
- retval = lowest_latency;
- } else if (bytes/packets > 2000) {
- retval = bulk_latency;
- } else if (packets <= 2 && bytes < 512) {
- retval = lowest_latency;
- }
- break;
- case bulk_latency: /* 250 usec aka 4000 ints/s */
- if (bytes > 25000) {
- if (packets > 35)
- retval = low_latency;
- } else if (bytes < 6000) {
- retval = low_latency;
- }
- break;
- }
-
-update_itr_done:
- return retval;
-}
-
-static void igbvf_set_itr(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u16 current_itr;
- u32 new_itr = adapter->itr;
-
- adapter->tx_itr = igbvf_update_itr(adapter, adapter->tx_itr,
- adapter->total_tx_packets,
- adapter->total_tx_bytes);
- /* conservative mode (itr 3) eliminates the lowest_latency setting */
- if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
- adapter->tx_itr = low_latency;
-
- adapter->rx_itr = igbvf_update_itr(adapter, adapter->rx_itr,
- adapter->total_rx_packets,
- adapter->total_rx_bytes);
- /* conservative mode (itr 3) eliminates the lowest_latency setting */
- if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
- adapter->rx_itr = low_latency;
-
- current_itr = max(adapter->rx_itr, adapter->tx_itr);
-
- switch (current_itr) {
- /* counts and packets in update_itr are dependent on these numbers */
- case lowest_latency:
- new_itr = 70000;
- break;
- case low_latency:
- new_itr = 20000; /* aka hwitr = ~200 */
- break;
- case bulk_latency:
- new_itr = 4000;
- break;
- default:
- break;
- }
-
- if (new_itr != adapter->itr) {
- /*
- * this attempts to bias the interrupt rate towards Bulk
- * by adding intermediate steps when interrupt rate is
- * increasing
- */
- new_itr = new_itr > adapter->itr ?
- min(adapter->itr + (new_itr >> 2), new_itr) :
- new_itr;
- adapter->itr = new_itr;
- adapter->rx_ring->itr_val = 1952;
-
- if (adapter->msix_entries)
- adapter->rx_ring->set_itr = 1;
- else
- ew32(ITR, 1952);
- }
-}
-
-/**
- * igbvf_clean_tx_irq - Reclaim resources after transmit completes
- * @adapter: board private structure
- * returns true if ring is completely cleaned
- **/
-static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring)
-{
- struct igbvf_adapter *adapter = tx_ring->adapter;
- struct net_device *netdev = adapter->netdev;
- struct igbvf_buffer *buffer_info;
- struct sk_buff *skb;
- union e1000_adv_tx_desc *tx_desc, *eop_desc;
- unsigned int total_bytes = 0, total_packets = 0;
- unsigned int i, eop, count = 0;
- bool cleaned = false;
-
- i = tx_ring->next_to_clean;
- eop = tx_ring->buffer_info[i].next_to_watch;
- eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop);
-
- while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) &&
- (count < tx_ring->count)) {
- rmb(); /* read buffer_info after eop_desc status */
- for (cleaned = false; !cleaned; count++) {
- tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
- buffer_info = &tx_ring->buffer_info[i];
- cleaned = (i == eop);
- skb = buffer_info->skb;
-
- if (skb) {
- unsigned int segs, bytecount;
-
- /* gso_segs is currently only valid for tcp */
- segs = skb_shinfo(skb)->gso_segs ?: 1;
- /* multiply data chunks by size of headers */
- bytecount = ((segs - 1) * skb_headlen(skb)) +
- skb->len;
- total_packets += segs;
- total_bytes += bytecount;
- }
-
- igbvf_put_txbuf(adapter, buffer_info);
- tx_desc->wb.status = 0;
-
- i++;
- if (i == tx_ring->count)
- i = 0;
- }
- eop = tx_ring->buffer_info[i].next_to_watch;
- eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop);
- }
-
- tx_ring->next_to_clean = i;
-
- if (unlikely(count &&
- netif_carrier_ok(netdev) &&
- igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) {
- /* Make sure that anybody stopping the queue after this
- * sees the new next_to_clean.
- */
- smp_mb();
- if (netif_queue_stopped(netdev) &&
- !(test_bit(__IGBVF_DOWN, &adapter->state))) {
- netif_wake_queue(netdev);
- ++adapter->restart_queue;
- }
- }
-
- adapter->net_stats.tx_bytes += total_bytes;
- adapter->net_stats.tx_packets += total_packets;
- return count < tx_ring->count;
-}
-
-static irqreturn_t igbvf_msix_other(int irq, void *data)
-{
- struct net_device *netdev = data;
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
-
- adapter->int_counter1++;
-
- netif_carrier_off(netdev);
- hw->mac.get_link_status = 1;
- if (!test_bit(__IGBVF_DOWN, &adapter->state))
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
-
- ew32(EIMS, adapter->eims_other);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t igbvf_intr_msix_tx(int irq, void *data)
-{
- struct net_device *netdev = data;
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct igbvf_ring *tx_ring = adapter->tx_ring;
-
-
- adapter->total_tx_bytes = 0;
- adapter->total_tx_packets = 0;
-
- /* auto mask will automatically reenable the interrupt when we write
- * EICS */
- if (!igbvf_clean_tx_irq(tx_ring))
- /* Ring was not completely cleaned, so fire another interrupt */
- ew32(EICS, tx_ring->eims_value);
- else
- ew32(EIMS, tx_ring->eims_value);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t igbvf_intr_msix_rx(int irq, void *data)
-{
- struct net_device *netdev = data;
- struct igbvf_adapter *adapter = netdev_priv(netdev);
-
- adapter->int_counter0++;
-
- /* Write the ITR value calculated at the end of the
- * previous interrupt.
- */
- if (adapter->rx_ring->set_itr) {
- writel(adapter->rx_ring->itr_val,
- adapter->hw.hw_addr + adapter->rx_ring->itr_register);
- adapter->rx_ring->set_itr = 0;
- }
-
- if (napi_schedule_prep(&adapter->rx_ring->napi)) {
- adapter->total_rx_bytes = 0;
- adapter->total_rx_packets = 0;
- __napi_schedule(&adapter->rx_ring->napi);
- }
-
- return IRQ_HANDLED;
-}
-
-#define IGBVF_NO_QUEUE -1
-
-static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue,
- int tx_queue, int msix_vector)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 ivar, index;
-
- /* 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. */
- if (rx_queue > IGBVF_NO_QUEUE) {
- index = (rx_queue >> 1);
- ivar = array_er32(IVAR0, index);
- if (rx_queue & 0x1) {
- /* vector goes into third byte of register */
- ivar = ivar & 0xFF00FFFF;
- ivar |= (msix_vector | E1000_IVAR_VALID) << 16;
- } else {
- /* vector goes into low byte of register */
- ivar = ivar & 0xFFFFFF00;
- ivar |= msix_vector | E1000_IVAR_VALID;
- }
- adapter->rx_ring[rx_queue].eims_value = 1 << msix_vector;
- array_ew32(IVAR0, index, ivar);
- }
- if (tx_queue > IGBVF_NO_QUEUE) {
- index = (tx_queue >> 1);
- ivar = array_er32(IVAR0, index);
- if (tx_queue & 0x1) {
- /* vector goes into high byte of register */
- ivar = ivar & 0x00FFFFFF;
- ivar |= (msix_vector | E1000_IVAR_VALID) << 24;
- } else {
- /* vector goes into second byte of register */
- ivar = ivar & 0xFFFF00FF;
- ivar |= (msix_vector | E1000_IVAR_VALID) << 8;
- }
- adapter->tx_ring[tx_queue].eims_value = 1 << msix_vector;
- array_ew32(IVAR0, index, ivar);
- }
-}
-
-/**
- * igbvf_configure_msix - Configure MSI-X hardware
- *
- * igbvf_configure_msix sets up the hardware to properly
- * generate MSI-X interrupts.
- **/
-static void igbvf_configure_msix(struct igbvf_adapter *adapter)
-{
- u32 tmp;
- struct e1000_hw *hw = &adapter->hw;
- struct igbvf_ring *tx_ring = adapter->tx_ring;
- struct igbvf_ring *rx_ring = adapter->rx_ring;
- int vector = 0;
-
- adapter->eims_enable_mask = 0;
-
- igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++);
- adapter->eims_enable_mask |= tx_ring->eims_value;
- if (tx_ring->itr_val)
- writel(tx_ring->itr_val,
- hw->hw_addr + tx_ring->itr_register);
- else
- writel(1952, hw->hw_addr + tx_ring->itr_register);
-
- igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++);
- adapter->eims_enable_mask |= rx_ring->eims_value;
- if (rx_ring->itr_val)
- writel(rx_ring->itr_val,
- hw->hw_addr + rx_ring->itr_register);
- else
- writel(1952, hw->hw_addr + rx_ring->itr_register);
-
- /* set vector for other causes, i.e. link changes */
-
- tmp = (vector++ | E1000_IVAR_VALID);
-
- ew32(IVAR_MISC, tmp);
-
- adapter->eims_enable_mask = (1 << (vector)) - 1;
- adapter->eims_other = 1 << (vector - 1);
- e1e_flush();
-}
-
-static void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter)
-{
- if (adapter->msix_entries) {
- pci_disable_msix(adapter->pdev);
- kfree(adapter->msix_entries);
- adapter->msix_entries = NULL;
- }
-}
-
-/**
- * igbvf_set_interrupt_capability - set MSI or MSI-X if supported
- *
- * Attempt to configure interrupts using the best available
- * capabilities of the hardware and kernel.
- **/
-static void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter)
-{
- int err = -ENOMEM;
- int i;
-
- /* we allocate 3 vectors, 1 for tx, 1 for rx, one for pf messages */
- adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry),
- GFP_KERNEL);
- if (adapter->msix_entries) {
- for (i = 0; i < 3; i++)
- adapter->msix_entries[i].entry = i;
-
- err = pci_enable_msix(adapter->pdev,
- adapter->msix_entries, 3);
- }
-
- if (err) {
- /* MSI-X failed */
- dev_err(&adapter->pdev->dev,
- "Failed to initialize MSI-X interrupts.\n");
- igbvf_reset_interrupt_capability(adapter);
- }
-}
-
-/**
- * igbvf_request_msix - Initialize MSI-X interrupts
- *
- * igbvf_request_msix allocates MSI-X vectors and requests interrupts from the
- * kernel.
- **/
-static int igbvf_request_msix(struct igbvf_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- int err = 0, vector = 0;
-
- if (strlen(netdev->name) < (IFNAMSIZ - 5)) {
- sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name);
- sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name);
- } else {
- memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
- memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
- }
-
- err = request_irq(adapter->msix_entries[vector].vector,
- igbvf_intr_msix_tx, 0, adapter->tx_ring->name,
- netdev);
- if (err)
- goto out;
-
- adapter->tx_ring->itr_register = E1000_EITR(vector);
- adapter->tx_ring->itr_val = 1952;
- vector++;
-
- err = request_irq(adapter->msix_entries[vector].vector,
- igbvf_intr_msix_rx, 0, adapter->rx_ring->name,
- netdev);
- if (err)
- goto out;
-
- adapter->rx_ring->itr_register = E1000_EITR(vector);
- adapter->rx_ring->itr_val = 1952;
- vector++;
-
- err = request_irq(adapter->msix_entries[vector].vector,
- igbvf_msix_other, 0, netdev->name, netdev);
- if (err)
- goto out;
-
- igbvf_configure_msix(adapter);
- return 0;
-out:
- return err;
-}
-
-/**
- * igbvf_alloc_queues - Allocate memory for all rings
- * @adapter: board private structure to initialize
- **/
-static int __devinit igbvf_alloc_queues(struct igbvf_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
-
- adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
- if (!adapter->tx_ring)
- return -ENOMEM;
-
- adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
- if (!adapter->rx_ring) {
- kfree(adapter->tx_ring);
- return -ENOMEM;
- }
-
- netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll, 64);
-
- return 0;
-}
-
-/**
- * igbvf_request_irq - initialize interrupts
- *
- * Attempts to configure interrupts using the best available
- * capabilities of the hardware and kernel.
- **/
-static int igbvf_request_irq(struct igbvf_adapter *adapter)
-{
- int err = -1;
-
- /* igbvf supports msi-x only */
- if (adapter->msix_entries)
- err = igbvf_request_msix(adapter);
-
- if (!err)
- return err;
-
- dev_err(&adapter->pdev->dev,
- "Unable to allocate interrupt, Error: %d\n", err);
-
- return err;
-}
-
-static void igbvf_free_irq(struct igbvf_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- int vector;
-
- if (adapter->msix_entries) {
- for (vector = 0; vector < 3; vector++)
- free_irq(adapter->msix_entries[vector].vector, netdev);
- }
-}
-
-/**
- * igbvf_irq_disable - Mask off interrupt generation on the NIC
- **/
-static void igbvf_irq_disable(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- ew32(EIMC, ~0);
-
- if (adapter->msix_entries)
- ew32(EIAC, 0);
-}
-
-/**
- * igbvf_irq_enable - Enable default interrupt generation settings
- **/
-static void igbvf_irq_enable(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- ew32(EIAC, adapter->eims_enable_mask);
- ew32(EIAM, adapter->eims_enable_mask);
- ew32(EIMS, adapter->eims_enable_mask);
-}
-
-/**
- * igbvf_poll - NAPI Rx polling callback
- * @napi: struct associated with this polling callback
- * @budget: amount of packets driver is allowed to process this poll
- **/
-static int igbvf_poll(struct napi_struct *napi, int budget)
-{
- struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi);
- struct igbvf_adapter *adapter = rx_ring->adapter;
- struct e1000_hw *hw = &adapter->hw;
- int work_done = 0;
-
- igbvf_clean_rx_irq(adapter, &work_done, budget);
-
- /* If not enough Rx work done, exit the polling mode */
- if (work_done < budget) {
- napi_complete(napi);
-
- if (adapter->itr_setting & 3)
- igbvf_set_itr(adapter);
-
- if (!test_bit(__IGBVF_DOWN, &adapter->state))
- ew32(EIMS, adapter->rx_ring->eims_value);
- }
-
- return work_done;
-}
-
-/**
- * igbvf_set_rlpml - set receive large packet maximum length
- * @adapter: board private structure
- *
- * Configure the maximum size of packets that will be received
- */
-static void igbvf_set_rlpml(struct igbvf_adapter *adapter)
-{
- int max_frame_size;
- struct e1000_hw *hw = &adapter->hw;
-
- max_frame_size = adapter->max_frame_size + VLAN_TAG_SIZE;
- e1000_rlpml_set_vf(hw, max_frame_size);
-}
-
-static void igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
-
- if (hw->mac.ops.set_vfta(hw, vid, true))
- dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid);
- else
- set_bit(vid, adapter->active_vlans);
-}
-
-static void igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
-
- igbvf_irq_disable(adapter);
-
- if (!test_bit(__IGBVF_DOWN, &adapter->state))
- igbvf_irq_enable(adapter);
-
- if (hw->mac.ops.set_vfta(hw, vid, false))
- dev_err(&adapter->pdev->dev,
- "Failed to remove vlan id %d\n", vid);
- else
- clear_bit(vid, adapter->active_vlans);
-}
-
-static void igbvf_restore_vlan(struct igbvf_adapter *adapter)
-{
- u16 vid;
-
- for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
- igbvf_vlan_rx_add_vid(adapter->netdev, vid);
-}
-
-/**
- * igbvf_configure_tx - Configure Transmit Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Tx unit of the MAC after a reset.
- **/
-static void igbvf_configure_tx(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct igbvf_ring *tx_ring = adapter->tx_ring;
- u64 tdba;
- u32 txdctl, dca_txctrl;
-
- /* disable transmits */
- txdctl = er32(TXDCTL(0));
- ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE);
- e1e_flush();
- msleep(10);
-
- /* Setup the HW Tx Head and Tail descriptor pointers */
- ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc));
- tdba = tx_ring->dma;
- ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32)));
- ew32(TDBAH(0), (tdba >> 32));
- ew32(TDH(0), 0);
- ew32(TDT(0), 0);
- tx_ring->head = E1000_TDH(0);
- tx_ring->tail = E1000_TDT(0);
-
- /* Turn off Relaxed Ordering on head write-backs. The writebacks
- * MUST be delivered in order or it will completely screw up
- * our bookeeping.
- */
- dca_txctrl = er32(DCA_TXCTRL(0));
- dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
- ew32(DCA_TXCTRL(0), dca_txctrl);
-
- /* enable transmits */
- txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
- ew32(TXDCTL(0), txdctl);
-
- /* Setup Transmit Descriptor Settings for eop descriptor */
- adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS;
-
- /* enable Report Status bit */
- adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS;
-}
-
-/**
- * igbvf_setup_srrctl - configure the receive control registers
- * @adapter: Board private structure
- **/
-static void igbvf_setup_srrctl(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 srrctl = 0;
-
- srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK |
- E1000_SRRCTL_BSIZEHDR_MASK |
- E1000_SRRCTL_BSIZEPKT_MASK);
-
- /* Enable queue drop to avoid head of line blocking */
- srrctl |= E1000_SRRCTL_DROP_EN;
-
- /* Setup buffer sizes */
- srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >>
- E1000_SRRCTL_BSIZEPKT_SHIFT;
-
- if (adapter->rx_buffer_len < 2048) {
- adapter->rx_ps_hdr_size = 0;
- srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
- } else {
- adapter->rx_ps_hdr_size = 128;
- srrctl |= adapter->rx_ps_hdr_size <<
- E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
- srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
- }
-
- ew32(SRRCTL(0), srrctl);
-}
-
-/**
- * igbvf_configure_rx - Configure Receive Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Rx unit of the MAC after a reset.
- **/
-static void igbvf_configure_rx(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct igbvf_ring *rx_ring = adapter->rx_ring;
- u64 rdba;
- u32 rdlen, rxdctl;
-
- /* disable receives */
- rxdctl = er32(RXDCTL(0));
- ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
- e1e_flush();
- msleep(10);
-
- rdlen = rx_ring->count * sizeof(union e1000_adv_rx_desc);
-
- /*
- * Setup the HW Rx Head and Tail Descriptor Pointers and
- * the Base and Length of the Rx Descriptor Ring
- */
- rdba = rx_ring->dma;
- ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32)));
- ew32(RDBAH(0), (rdba >> 32));
- ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc));
- rx_ring->head = E1000_RDH(0);
- rx_ring->tail = E1000_RDT(0);
- ew32(RDH(0), 0);
- ew32(RDT(0), 0);
-
- rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
- rxdctl &= 0xFFF00000;
- rxdctl |= IGBVF_RX_PTHRESH;
- rxdctl |= IGBVF_RX_HTHRESH << 8;
- rxdctl |= IGBVF_RX_WTHRESH << 16;
-
- igbvf_set_rlpml(adapter);
-
- /* enable receives */
- ew32(RXDCTL(0), rxdctl);
-}
-
-/**
- * igbvf_set_multi - Multicast and Promiscuous mode set
- * @netdev: network interface device structure
- *
- * The set_multi entry point is called whenever the multicast address
- * list or the network interface flags are updated. This routine is
- * responsible for configuring the hardware for proper multicast,
- * promiscuous mode, and all-multi behavior.
- **/
-static void igbvf_set_multi(struct net_device *netdev)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct netdev_hw_addr *ha;
- u8 *mta_list = NULL;
- int i;
-
- if (!netdev_mc_empty(netdev)) {
- mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC);
- if (!mta_list) {
- dev_err(&adapter->pdev->dev,
- "failed to allocate multicast filter list\n");
- return;
- }
- }
-
- /* prepare a packed array of only addresses. */
- i = 0;
- netdev_for_each_mc_addr(ha, netdev)
- memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
-
- hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0);
- kfree(mta_list);
-}
-
-/**
- * igbvf_configure - configure the hardware for Rx and Tx
- * @adapter: private board structure
- **/
-static void igbvf_configure(struct igbvf_adapter *adapter)
-{
- igbvf_set_multi(adapter->netdev);
-
- igbvf_restore_vlan(adapter);
-
- igbvf_configure_tx(adapter);
- igbvf_setup_srrctl(adapter);
- igbvf_configure_rx(adapter);
- igbvf_alloc_rx_buffers(adapter->rx_ring,
- igbvf_desc_unused(adapter->rx_ring));
-}
-
-/* igbvf_reset - bring the hardware into a known good state
- *
- * This function boots the hardware and enables some settings that
- * require a configuration cycle of the hardware - those cannot be
- * set/changed during runtime. After reset the device needs to be
- * properly configured for Rx, Tx etc.
- */
-static void igbvf_reset(struct igbvf_adapter *adapter)
-{
- struct e1000_mac_info *mac = &adapter->hw.mac;
- struct net_device *netdev = adapter->netdev;
- struct e1000_hw *hw = &adapter->hw;
-
- /* Allow time for pending master requests to run */
- if (mac->ops.reset_hw(hw))
- dev_err(&adapter->pdev->dev, "PF still resetting\n");
-
- mac->ops.init_hw(hw);
-
- if (is_valid_ether_addr(adapter->hw.mac.addr)) {
- memcpy(netdev->dev_addr, adapter->hw.mac.addr,
- netdev->addr_len);
- memcpy(netdev->perm_addr, adapter->hw.mac.addr,
- netdev->addr_len);
- }
-
- adapter->last_reset = jiffies;
-}
-
-int igbvf_up(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- /* hardware has been reset, we need to reload some things */
- igbvf_configure(adapter);
-
- clear_bit(__IGBVF_DOWN, &adapter->state);
-
- napi_enable(&adapter->rx_ring->napi);
- if (adapter->msix_entries)
- igbvf_configure_msix(adapter);
-
- /* Clear any pending interrupts. */
- er32(EICR);
- igbvf_irq_enable(adapter);
-
- /* start the watchdog */
- hw->mac.get_link_status = 1;
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
-
-
- return 0;
-}
-
-void igbvf_down(struct igbvf_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct e1000_hw *hw = &adapter->hw;
- u32 rxdctl, txdctl;
-
- /*
- * signal that we're down so the interrupt handler does not
- * reschedule our watchdog timer
- */
- set_bit(__IGBVF_DOWN, &adapter->state);
-
- /* disable receives in the hardware */
- rxdctl = er32(RXDCTL(0));
- ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
-
- netif_stop_queue(netdev);
-
- /* disable transmits in the hardware */
- txdctl = er32(TXDCTL(0));
- ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE);
-
- /* flush both disables and wait for them to finish */
- e1e_flush();
- msleep(10);
-
- napi_disable(&adapter->rx_ring->napi);
-
- igbvf_irq_disable(adapter);
-
- del_timer_sync(&adapter->watchdog_timer);
-
- netif_carrier_off(netdev);
-
- /* record the stats before reset*/
- igbvf_update_stats(adapter);
-
- adapter->link_speed = 0;
- adapter->link_duplex = 0;
-
- igbvf_reset(adapter);
- igbvf_clean_tx_ring(adapter->tx_ring);
- igbvf_clean_rx_ring(adapter->rx_ring);
-}
-
-void igbvf_reinit_locked(struct igbvf_adapter *adapter)
-{
- might_sleep();
- while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
- msleep(1);
- igbvf_down(adapter);
- igbvf_up(adapter);
- clear_bit(__IGBVF_RESETTING, &adapter->state);
-}
-
-/**
- * igbvf_sw_init - Initialize general software structures (struct igbvf_adapter)
- * @adapter: board private structure to initialize
- *
- * igbvf_sw_init initializes the Adapter private data structure.
- * Fields are initialized based on PCI device information and
- * OS network device settings (MTU size).
- **/
-static int __devinit igbvf_sw_init(struct igbvf_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- s32 rc;
-
- adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
- adapter->rx_ps_hdr_size = 0;
- adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
- adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
-
- adapter->tx_int_delay = 8;
- adapter->tx_abs_int_delay = 32;
- adapter->rx_int_delay = 0;
- adapter->rx_abs_int_delay = 8;
- adapter->itr_setting = 3;
- adapter->itr = 20000;
-
- /* Set various function pointers */
- adapter->ei->init_ops(&adapter->hw);
-
- rc = adapter->hw.mac.ops.init_params(&adapter->hw);
- if (rc)
- return rc;
-
- rc = adapter->hw.mbx.ops.init_params(&adapter->hw);
- if (rc)
- return rc;
-
- igbvf_set_interrupt_capability(adapter);
-
- if (igbvf_alloc_queues(adapter))
- return -ENOMEM;
-
- spin_lock_init(&adapter->tx_queue_lock);
-
- /* Explicitly disable IRQ since the NIC can be in any state. */
- igbvf_irq_disable(adapter);
-
- spin_lock_init(&adapter->stats_lock);
-
- set_bit(__IGBVF_DOWN, &adapter->state);
- return 0;
-}
-
-static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- adapter->stats.last_gprc = er32(VFGPRC);
- adapter->stats.last_gorc = er32(VFGORC);
- adapter->stats.last_gptc = er32(VFGPTC);
- adapter->stats.last_gotc = er32(VFGOTC);
- adapter->stats.last_mprc = er32(VFMPRC);
- adapter->stats.last_gotlbc = er32(VFGOTLBC);
- adapter->stats.last_gptlbc = er32(VFGPTLBC);
- adapter->stats.last_gorlbc = er32(VFGORLBC);
- adapter->stats.last_gprlbc = er32(VFGPRLBC);
-
- adapter->stats.base_gprc = er32(VFGPRC);
- adapter->stats.base_gorc = er32(VFGORC);
- adapter->stats.base_gptc = er32(VFGPTC);
- adapter->stats.base_gotc = er32(VFGOTC);
- adapter->stats.base_mprc = er32(VFMPRC);
- adapter->stats.base_gotlbc = er32(VFGOTLBC);
- adapter->stats.base_gptlbc = er32(VFGPTLBC);
- adapter->stats.base_gorlbc = er32(VFGORLBC);
- adapter->stats.base_gprlbc = er32(VFGPRLBC);
-}
-
-/**
- * igbvf_open - Called when a network interface is made active
- * @netdev: network interface device structure
- *
- * Returns 0 on success, negative value on failure
- *
- * The open entry point is called when a network interface is made
- * active by the system (IFF_UP). At this point all resources needed
- * for transmit and receive operations are allocated, the interrupt
- * handler is registered with the OS, the watchdog timer is started,
- * and the stack is notified that the interface is ready.
- **/
-static int igbvf_open(struct net_device *netdev)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- int err;
-
- /* disallow open during test */
- if (test_bit(__IGBVF_TESTING, &adapter->state))
- return -EBUSY;
-
- /* allocate transmit descriptors */
- err = igbvf_setup_tx_resources(adapter, adapter->tx_ring);
- if (err)
- goto err_setup_tx;
-
- /* allocate receive descriptors */
- err = igbvf_setup_rx_resources(adapter, adapter->rx_ring);
- if (err)
- goto err_setup_rx;
-
- /*
- * before we allocate an interrupt, we must be ready to handle it.
- * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
- * as soon as we call pci_request_irq, so we have to setup our
- * clean_rx handler before we do so.
- */
- igbvf_configure(adapter);
-
- err = igbvf_request_irq(adapter);
- if (err)
- goto err_req_irq;
-
- /* From here on the code is the same as igbvf_up() */
- clear_bit(__IGBVF_DOWN, &adapter->state);
-
- napi_enable(&adapter->rx_ring->napi);
-
- /* clear any pending interrupts */
- er32(EICR);
-
- igbvf_irq_enable(adapter);
-
- /* start the watchdog */
- hw->mac.get_link_status = 1;
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
-
- return 0;
-
-err_req_irq:
- igbvf_free_rx_resources(adapter->rx_ring);
-err_setup_rx:
- igbvf_free_tx_resources(adapter->tx_ring);
-err_setup_tx:
- igbvf_reset(adapter);
-
- return err;
-}
-
-/**
- * igbvf_close - Disables a network interface
- * @netdev: network interface device structure
- *
- * Returns 0, this is not allowed to fail
- *
- * The close entry point is called when an interface is de-activated
- * by the OS. The hardware is still under the drivers control, but
- * needs to be disabled. A global MAC reset is issued to stop the
- * hardware, and all transmit and receive resources are freed.
- **/
-static int igbvf_close(struct net_device *netdev)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
-
- WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state));
- igbvf_down(adapter);
-
- igbvf_free_irq(adapter);
-
- igbvf_free_tx_resources(adapter->tx_ring);
- igbvf_free_rx_resources(adapter->rx_ring);
-
- return 0;
-}
-/**
- * igbvf_set_mac - Change the Ethernet Address of the NIC
- * @netdev: network interface device structure
- * @p: pointer to an address structure
- *
- * Returns 0 on success, negative on failure
- **/
-static int igbvf_set_mac(struct net_device *netdev, void *p)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct sockaddr *addr = p;
-
- if (!is_valid_ether_addr(addr->sa_data))
- return -EADDRNOTAVAIL;
-
- memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
-
- hw->mac.ops.rar_set(hw, hw->mac.addr, 0);
-
- if (memcmp(addr->sa_data, hw->mac.addr, 6))
- return -EADDRNOTAVAIL;
-
- memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
-
- return 0;
-}
-
-#define UPDATE_VF_COUNTER(reg, name) \
- { \
- u32 current_counter = er32(reg); \
- if (current_counter < adapter->stats.last_##name) \
- adapter->stats.name += 0x100000000LL; \
- adapter->stats.last_##name = current_counter; \
- adapter->stats.name &= 0xFFFFFFFF00000000LL; \
- adapter->stats.name |= current_counter; \
- }
-
-/**
- * igbvf_update_stats - Update the board statistics counters
- * @adapter: board private structure
-**/
-void igbvf_update_stats(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct pci_dev *pdev = adapter->pdev;
-
- /*
- * Prevent stats update while adapter is being reset, link is down
- * or if the pci connection is down.
- */
- if (adapter->link_speed == 0)
- return;
-
- if (test_bit(__IGBVF_RESETTING, &adapter->state))
- return;
-
- if (pci_channel_offline(pdev))
- return;
-
- UPDATE_VF_COUNTER(VFGPRC, gprc);
- UPDATE_VF_COUNTER(VFGORC, gorc);
- UPDATE_VF_COUNTER(VFGPTC, gptc);
- UPDATE_VF_COUNTER(VFGOTC, gotc);
- UPDATE_VF_COUNTER(VFMPRC, mprc);
- UPDATE_VF_COUNTER(VFGOTLBC, gotlbc);
- UPDATE_VF_COUNTER(VFGPTLBC, gptlbc);
- UPDATE_VF_COUNTER(VFGORLBC, gorlbc);
- UPDATE_VF_COUNTER(VFGPRLBC, gprlbc);
-
- /* Fill out the OS statistics structure */
- adapter->net_stats.multicast = adapter->stats.mprc;
-}
-
-static void igbvf_print_link_info(struct igbvf_adapter *adapter)
-{
- dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s\n",
- adapter->link_speed,
- ((adapter->link_duplex == FULL_DUPLEX) ?
- "Full Duplex" : "Half Duplex"));
-}
-
-static bool igbvf_has_link(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- s32 ret_val = E1000_SUCCESS;
- bool link_active;
-
- /* If interface is down, stay link down */
- if (test_bit(__IGBVF_DOWN, &adapter->state))
- return false;
-
- ret_val = hw->mac.ops.check_for_link(hw);
- link_active = !hw->mac.get_link_status;
-
- /* if check for link returns error we will need to reset */
- if (ret_val && time_after(jiffies, adapter->last_reset + (10 * HZ)))
- schedule_work(&adapter->reset_task);
-
- return link_active;
-}
-
-/**
- * igbvf_watchdog - Timer Call-back
- * @data: pointer to adapter cast into an unsigned long
- **/
-static void igbvf_watchdog(unsigned long data)
-{
- struct igbvf_adapter *adapter = (struct igbvf_adapter *) data;
-
- /* Do the rest outside of interrupt context */
- schedule_work(&adapter->watchdog_task);
-}
-
-static void igbvf_watchdog_task(struct work_struct *work)
-{
- struct igbvf_adapter *adapter = container_of(work,
- struct igbvf_adapter,
- watchdog_task);
- struct net_device *netdev = adapter->netdev;
- struct e1000_mac_info *mac = &adapter->hw.mac;
- struct igbvf_ring *tx_ring = adapter->tx_ring;
- struct e1000_hw *hw = &adapter->hw;
- u32 link;
- int tx_pending = 0;
-
- link = igbvf_has_link(adapter);
-
- if (link) {
- if (!netif_carrier_ok(netdev)) {
- mac->ops.get_link_up_info(&adapter->hw,
- &adapter->link_speed,
- &adapter->link_duplex);
- igbvf_print_link_info(adapter);
-
- netif_carrier_on(netdev);
- netif_wake_queue(netdev);
- }
- } else {
- if (netif_carrier_ok(netdev)) {
- adapter->link_speed = 0;
- adapter->link_duplex = 0;
- dev_info(&adapter->pdev->dev, "Link is Down\n");
- netif_carrier_off(netdev);
- netif_stop_queue(netdev);
- }
- }
-
- if (netif_carrier_ok(netdev)) {
- igbvf_update_stats(adapter);
- } else {
- tx_pending = (igbvf_desc_unused(tx_ring) + 1 <
- tx_ring->count);
- if (tx_pending) {
- /*
- * 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).
- */
- adapter->tx_timeout_count++;
- schedule_work(&adapter->reset_task);
- }
- }
-
- /* Cause software interrupt to ensure Rx ring is cleaned */
- ew32(EICS, adapter->rx_ring->eims_value);
-
- /* Reset the timer */
- if (!test_bit(__IGBVF_DOWN, &adapter->state))
- mod_timer(&adapter->watchdog_timer,
- round_jiffies(jiffies + (2 * HZ)));
-}
-
-#define IGBVF_TX_FLAGS_CSUM 0x00000001
-#define IGBVF_TX_FLAGS_VLAN 0x00000002
-#define IGBVF_TX_FLAGS_TSO 0x00000004
-#define IGBVF_TX_FLAGS_IPV4 0x00000008
-#define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000
-#define IGBVF_TX_FLAGS_VLAN_SHIFT 16
-
-static int igbvf_tso(struct igbvf_adapter *adapter,
- struct igbvf_ring *tx_ring,
- struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
-{
- struct e1000_adv_tx_context_desc *context_desc;
- unsigned int i;
- int err;
- struct igbvf_buffer *buffer_info;
- u32 info = 0, tu_cmd = 0;
- u32 mss_l4len_idx, l4len;
- *hdr_len = 0;
-
- if (skb_header_cloned(skb)) {
- err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
- if (err) {
- dev_err(&adapter->pdev->dev,
- "igbvf_tso returning an error\n");
- return err;
- }
- }
-
- l4len = tcp_hdrlen(skb);
- *hdr_len += l4len;
-
- if (skb->protocol == htons(ETH_P_IP)) {
- struct iphdr *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);
- } else if (skb_is_gso_v6(skb)) {
- ipv6_hdr(skb)->payload_len = 0;
- tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
- &ipv6_hdr(skb)->daddr,
- 0, IPPROTO_TCP, 0);
- }
-
- i = tx_ring->next_to_use;
-
- buffer_info = &tx_ring->buffer_info[i];
- context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
- /* VLAN MACLEN IPLEN */
- if (tx_flags & IGBVF_TX_FLAGS_VLAN)
- info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK);
- info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
- *hdr_len += skb_network_offset(skb);
- info |= (skb_transport_header(skb) - skb_network_header(skb));
- *hdr_len += (skb_transport_header(skb) - skb_network_header(skb));
- context_desc->vlan_macip_lens = cpu_to_le32(info);
-
- /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
- tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
-
- if (skb->protocol == htons(ETH_P_IP))
- tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
- tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
-
- context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
-
- /* MSS L4LEN IDX */
- mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT);
- mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT);
-
- context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
- context_desc->seqnum_seed = 0;
-
- buffer_info->time_stamp = jiffies;
- buffer_info->next_to_watch = i;
- buffer_info->dma = 0;
- i++;
- if (i == tx_ring->count)
- i = 0;
-
- tx_ring->next_to_use = i;
-
- return true;
-}
-
-static inline bool igbvf_tx_csum(struct igbvf_adapter *adapter,
- struct igbvf_ring *tx_ring,
- struct sk_buff *skb, u32 tx_flags)
-{
- struct e1000_adv_tx_context_desc *context_desc;
- unsigned int i;
- struct igbvf_buffer *buffer_info;
- u32 info = 0, tu_cmd = 0;
-
- if ((skb->ip_summed == CHECKSUM_PARTIAL) ||
- (tx_flags & IGBVF_TX_FLAGS_VLAN)) {
- i = tx_ring->next_to_use;
- buffer_info = &tx_ring->buffer_info[i];
- context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
-
- if (tx_flags & IGBVF_TX_FLAGS_VLAN)
- info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK);
-
- info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
- if (skb->ip_summed == CHECKSUM_PARTIAL)
- info |= (skb_transport_header(skb) -
- skb_network_header(skb));
-
-
- context_desc->vlan_macip_lens = cpu_to_le32(info);
-
- tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
-
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
- switch (skb->protocol) {
- case __constant_htons(ETH_P_IP):
- tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
- if (ip_hdr(skb)->protocol == IPPROTO_TCP)
- tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
- break;
- case __constant_htons(ETH_P_IPV6):
- if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
- tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
- break;
- default:
- break;
- }
- }
-
- context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
- context_desc->seqnum_seed = 0;
- context_desc->mss_l4len_idx = 0;
-
- buffer_info->time_stamp = jiffies;
- buffer_info->next_to_watch = i;
- buffer_info->dma = 0;
- i++;
- if (i == tx_ring->count)
- i = 0;
- tx_ring->next_to_use = i;
-
- return true;
- }
-
- return false;
-}
-
-static int igbvf_maybe_stop_tx(struct net_device *netdev, int size)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
-
- /* there is enough descriptors then we don't need to worry */
- if (igbvf_desc_unused(adapter->tx_ring) >= size)
- return 0;
-
- netif_stop_queue(netdev);
-
- smp_mb();
-
- /* We need to check again just in case room has been made available */
- if (igbvf_desc_unused(adapter->tx_ring) < size)
- return -EBUSY;
-
- netif_wake_queue(netdev);
-
- ++adapter->restart_queue;
- return 0;
-}
-
-#define IGBVF_MAX_TXD_PWR 16
-#define IGBVF_MAX_DATA_PER_TXD (1 << IGBVF_MAX_TXD_PWR)
-
-static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter,
- struct igbvf_ring *tx_ring,
- struct sk_buff *skb,
- unsigned int first)
-{
- struct igbvf_buffer *buffer_info;
- struct pci_dev *pdev = adapter->pdev;
- unsigned int len = skb_headlen(skb);
- unsigned int count = 0, i;
- unsigned int f;
-
- i = tx_ring->next_to_use;
-
- buffer_info = &tx_ring->buffer_info[i];
- BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
- buffer_info->length = len;
- /* set time_stamp *before* dma to help avoid a possible race */
- buffer_info->time_stamp = jiffies;
- buffer_info->next_to_watch = i;
- buffer_info->mapped_as_page = false;
- buffer_info->dma = dma_map_single(&pdev->dev, skb->data, len,
- DMA_TO_DEVICE);
- if (dma_mapping_error(&pdev->dev, buffer_info->dma))
- goto dma_error;
-
-
- for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
- struct skb_frag_struct *frag;
-
- count++;
- i++;
- if (i == tx_ring->count)
- i = 0;
-
- frag = &skb_shinfo(skb)->frags[f];
- len = frag->size;
-
- buffer_info = &tx_ring->buffer_info[i];
- BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
- buffer_info->length = len;
- buffer_info->time_stamp = jiffies;
- buffer_info->next_to_watch = i;
- buffer_info->mapped_as_page = true;
- buffer_info->dma = dma_map_page(&pdev->dev,
- frag->page,
- frag->page_offset,
- len,
- DMA_TO_DEVICE);
- if (dma_mapping_error(&pdev->dev, buffer_info->dma))
- goto dma_error;
- }
-
- 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");
-
- /* clear timestamp and dma mappings for failed buffer_info mapping */
- buffer_info->dma = 0;
- buffer_info->time_stamp = 0;
- buffer_info->length = 0;
- buffer_info->next_to_watch = 0;
- buffer_info->mapped_as_page = false;
- if (count)
- count--;
-
- /* clear timestamp and dma mappings for remaining portion of packet */
- while (count--) {
- if (i==0)
- i += tx_ring->count;
- i--;
- buffer_info = &tx_ring->buffer_info[i];
- igbvf_put_txbuf(adapter, buffer_info);
- }
-
- return 0;
-}
-
-static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter,
- struct igbvf_ring *tx_ring,
- int tx_flags, int count, u32 paylen,
- u8 hdr_len)
-{
- union e1000_adv_tx_desc *tx_desc = NULL;
- struct igbvf_buffer *buffer_info;
- u32 olinfo_status = 0, cmd_type_len;
- unsigned int i;
-
- cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS |
- E1000_ADVTXD_DCMD_DEXT);
-
- if (tx_flags & IGBVF_TX_FLAGS_VLAN)
- cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
-
- if (tx_flags & IGBVF_TX_FLAGS_TSO) {
- cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
-
- /* insert tcp checksum */
- olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
-
- /* insert ip checksum */
- if (tx_flags & IGBVF_TX_FLAGS_IPV4)
- olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
-
- } else if (tx_flags & IGBVF_TX_FLAGS_CSUM) {
- olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
- }
-
- olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT);
-
- i = tx_ring->next_to_use;
- while (count--) {
- buffer_info = &tx_ring->buffer_info[i];
- tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
- tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
- tx_desc->read.cmd_type_len =
- cpu_to_le32(cmd_type_len | buffer_info->length);
- tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
- i++;
- if (i == tx_ring->count)
- i = 0;
- }
-
- tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd);
- /* Force memory writes to complete before letting h/w
- * know there are new descriptors to fetch. (Only
- * applicable for weak-ordered memory model archs,
- * such as IA-64). */
- wmb();
-
- tx_ring->next_to_use = i;
- writel(i, adapter->hw.hw_addr + tx_ring->tail);
- /* we need this if more than one processor can write to our tail
- * at a time, it syncronizes IO on IA64/Altix systems */
- mmiowb();
-}
-
-static netdev_tx_t igbvf_xmit_frame_ring_adv(struct sk_buff *skb,
- struct net_device *netdev,
- struct igbvf_ring *tx_ring)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- unsigned int first, tx_flags = 0;
- u8 hdr_len = 0;
- int count = 0;
- int tso = 0;
-
- if (test_bit(__IGBVF_DOWN, &adapter->state)) {
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
-
- if (skb->len <= 0) {
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
-
- /*
- * need: count + 4 desc gap to keep tail from touching
- * + 2 desc gap to keep tail from touching head,
- * + 1 desc for skb->data,
- * + 1 desc for context descriptor,
- * head, otherwise try next time
- */
- if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) {
- /* this is a hard error */
- return NETDEV_TX_BUSY;
- }
-
- if (vlan_tx_tag_present(skb)) {
- tx_flags |= IGBVF_TX_FLAGS_VLAN;
- tx_flags |= (vlan_tx_tag_get(skb) << IGBVF_TX_FLAGS_VLAN_SHIFT);
- }
-
- if (skb->protocol == htons(ETH_P_IP))
- tx_flags |= IGBVF_TX_FLAGS_IPV4;
-
- first = tx_ring->next_to_use;
-
- tso = skb_is_gso(skb) ?
- igbvf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len) : 0;
- if (unlikely(tso < 0)) {
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
-
- if (tso)
- tx_flags |= IGBVF_TX_FLAGS_TSO;
- else if (igbvf_tx_csum(adapter, tx_ring, skb, tx_flags) &&
- (skb->ip_summed == CHECKSUM_PARTIAL))
- tx_flags |= IGBVF_TX_FLAGS_CSUM;
-
- /*
- * count reflects descriptors mapped, if 0 then mapping error
- * has occurred and we need to rewind the descriptor queue
- */
- count = igbvf_tx_map_adv(adapter, tx_ring, skb, first);
-
- if (count) {
- igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count,
- skb->len, hdr_len);
- /* Make sure there is space in the ring for the next send. */
- igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4);
- } else {
- dev_kfree_skb_any(skb);
- tx_ring->buffer_info[first].time_stamp = 0;
- tx_ring->next_to_use = first;
- }
-
- return NETDEV_TX_OK;
-}
-
-static netdev_tx_t igbvf_xmit_frame(struct sk_buff *skb,
- struct net_device *netdev)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- struct igbvf_ring *tx_ring;
-
- if (test_bit(__IGBVF_DOWN, &adapter->state)) {
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
-
- tx_ring = &adapter->tx_ring[0];
-
- return igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring);
-}
-
-/**
- * igbvf_tx_timeout - Respond to a Tx Hang
- * @netdev: network interface device structure
- **/
-static void igbvf_tx_timeout(struct net_device *netdev)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
-
- /* Do the reset outside of interrupt context */
- adapter->tx_timeout_count++;
- schedule_work(&adapter->reset_task);
-}
-
-static void igbvf_reset_task(struct work_struct *work)
-{
- struct igbvf_adapter *adapter;
- adapter = container_of(work, struct igbvf_adapter, reset_task);
-
- igbvf_reinit_locked(adapter);
-}
-
-/**
- * igbvf_get_stats - Get System Network Statistics
- * @netdev: network interface device structure
- *
- * Returns the address of the device statistics structure.
- * The statistics are actually updated from the timer callback.
- **/
-static struct net_device_stats *igbvf_get_stats(struct net_device *netdev)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
-
- /* only return the current stats */
- return &adapter->net_stats;
-}
-
-/**
- * igbvf_change_mtu - Change the Maximum Transfer Unit
- * @netdev: network interface device structure
- * @new_mtu: new value for maximum frame size
- *
- * Returns 0 on success, negative on failure
- **/
-static int igbvf_change_mtu(struct net_device *netdev, int new_mtu)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
-
- if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) {
- dev_err(&adapter->pdev->dev, "Invalid MTU setting\n");
- return -EINVAL;
- }
-
-#define MAX_STD_JUMBO_FRAME_SIZE 9234
- if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
- dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n");
- return -EINVAL;
- }
-
- while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
- msleep(1);
- /* igbvf_down has a dependency on max_frame_size */
- adapter->max_frame_size = max_frame;
- if (netif_running(netdev))
- igbvf_down(adapter);
-
- /*
- * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
- * means we reserve 2 more, this pushes us to allocate from the next
- * larger slab size.
- * i.e. RXBUFFER_2048 --> size-4096 slab
- * However with the new *_jumbo_rx* routines, jumbo receives will use
- * fragmented skbs
- */
-
- if (max_frame <= 1024)
- adapter->rx_buffer_len = 1024;
- else if (max_frame <= 2048)
- adapter->rx_buffer_len = 2048;
- else
-#if (PAGE_SIZE / 2) > 16384
- adapter->rx_buffer_len = 16384;
-#else
- adapter->rx_buffer_len = PAGE_SIZE / 2;
-#endif
-
-
- /* adjust allocation if LPE protects us, and we aren't using SBP */
- if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
- (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
- adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN +
- ETH_FCS_LEN;
-
- dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n",
- netdev->mtu, new_mtu);
- netdev->mtu = new_mtu;
-
- if (netif_running(netdev))
- igbvf_up(adapter);
- else
- igbvf_reset(adapter);
-
- clear_bit(__IGBVF_RESETTING, &adapter->state);
-
- return 0;
-}
-
-static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
-{
- switch (cmd) {
- default:
- return -EOPNOTSUPP;
- }
-}
-
-static int igbvf_suspend(struct pci_dev *pdev, pm_message_t state)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igbvf_adapter *adapter = netdev_priv(netdev);
-#ifdef CONFIG_PM
- int retval = 0;
-#endif
-
- netif_device_detach(netdev);
-
- if (netif_running(netdev)) {
- WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state));
- igbvf_down(adapter);
- igbvf_free_irq(adapter);
- }
-
-#ifdef CONFIG_PM
- retval = pci_save_state(pdev);
- if (retval)
- return retval;
-#endif
-
- pci_disable_device(pdev);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int igbvf_resume(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- u32 err;
-
- pci_restore_state(pdev);
- err = pci_enable_device_mem(pdev);
- if (err) {
- dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
- return err;
- }
-
- pci_set_master(pdev);
-
- if (netif_running(netdev)) {
- err = igbvf_request_irq(adapter);
- if (err)
- return err;
- }
-
- igbvf_reset(adapter);
-
- if (netif_running(netdev))
- igbvf_up(adapter);
-
- netif_device_attach(netdev);
-
- return 0;
-}
-#endif
-
-static void igbvf_shutdown(struct pci_dev *pdev)
-{
- igbvf_suspend(pdev, PMSG_SUSPEND);
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- * Polling 'interrupt' - used by things like netconsole to send skbs
- * without having to re-enable interrupts. It's not called while
- * the interrupt routine is executing.
- */
-static void igbvf_netpoll(struct net_device *netdev)
-{
- struct igbvf_adapter *adapter = netdev_priv(netdev);
-
- disable_irq(adapter->pdev->irq);
-
- igbvf_clean_tx_irq(adapter->tx_ring);
-
- enable_irq(adapter->pdev->irq);
-}
-#endif
-
-/**
- * igbvf_io_error_detected - called when PCI error is detected
- * @pdev: Pointer to PCI device
- * @state: The current pci connection state
- *
- * This function is called after a PCI bus error affecting
- * this device has been detected.
- */
-static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev,
- pci_channel_state_t state)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igbvf_adapter *adapter = netdev_priv(netdev);
-
- netif_device_detach(netdev);
-
- if (state == pci_channel_io_perm_failure)
- return PCI_ERS_RESULT_DISCONNECT;
-
- if (netif_running(netdev))
- igbvf_down(adapter);
- pci_disable_device(pdev);
-
- /* Request a slot slot reset. */
- return PCI_ERS_RESULT_NEED_RESET;
-}
-
-/**
- * igbvf_io_slot_reset - called after the pci bus has been reset.
- * @pdev: Pointer to PCI device
- *
- * Restart the card from scratch, as if from a cold-boot. Implementation
- * resembles the first-half of the igbvf_resume routine.
- */
-static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igbvf_adapter *adapter = netdev_priv(netdev);
-
- if (pci_enable_device_mem(pdev)) {
- dev_err(&pdev->dev,
- "Cannot re-enable PCI device after reset.\n");
- return PCI_ERS_RESULT_DISCONNECT;
- }
- pci_set_master(pdev);
-
- igbvf_reset(adapter);
-
- return PCI_ERS_RESULT_RECOVERED;
-}
-
-/**
- * igbvf_io_resume - called when traffic can start flowing again.
- * @pdev: Pointer to PCI device
- *
- * This callback is called when the error recovery driver tells us that
- * its OK to resume normal operation. Implementation resembles the
- * second-half of the igbvf_resume routine.
- */
-static void igbvf_io_resume(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igbvf_adapter *adapter = netdev_priv(netdev);
-
- if (netif_running(netdev)) {
- if (igbvf_up(adapter)) {
- dev_err(&pdev->dev,
- "can't bring device back up after reset\n");
- return;
- }
- }
-
- netif_device_attach(netdev);
-}
-
-static void igbvf_print_device_info(struct igbvf_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
-
- dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n");
- dev_info(&pdev->dev, "Address: %pM\n", netdev->dev_addr);
- dev_info(&pdev->dev, "MAC: %d\n", hw->mac.type);
-}
-
-static const struct net_device_ops igbvf_netdev_ops = {
- .ndo_open = igbvf_open,
- .ndo_stop = igbvf_close,
- .ndo_start_xmit = igbvf_xmit_frame,
- .ndo_get_stats = igbvf_get_stats,
- .ndo_set_multicast_list = igbvf_set_multi,
- .ndo_set_mac_address = igbvf_set_mac,
- .ndo_change_mtu = igbvf_change_mtu,
- .ndo_do_ioctl = igbvf_ioctl,
- .ndo_tx_timeout = igbvf_tx_timeout,
- .ndo_vlan_rx_add_vid = igbvf_vlan_rx_add_vid,
- .ndo_vlan_rx_kill_vid = igbvf_vlan_rx_kill_vid,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = igbvf_netpoll,
-#endif
-};
-
-/**
- * igbvf_probe - Device Initialization Routine
- * @pdev: PCI device information struct
- * @ent: entry in igbvf_pci_tbl
- *
- * Returns 0 on success, negative on failure
- *
- * igbvf_probe initializes an adapter identified by a pci_dev structure.
- * The OS initialization, configuring of the adapter private structure,
- * and a hardware reset occur.
- **/
-static int __devinit igbvf_probe(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct net_device *netdev;
- struct igbvf_adapter *adapter;
- struct e1000_hw *hw;
- const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data];
-
- static int cards_found;
- int err, pci_using_dac;
-
- err = pci_enable_device_mem(pdev);
- if (err)
- return err;
-
- pci_using_dac = 0;
- err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
- if (!err) {
- err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
- if (!err)
- pci_using_dac = 1;
- } else {
- err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (err) {
- err = dma_set_coherent_mask(&pdev->dev,
- DMA_BIT_MASK(32));
- if (err) {
- dev_err(&pdev->dev, "No usable DMA "
- "configuration, aborting\n");
- goto err_dma;
- }
- }
- }
-
- err = pci_request_regions(pdev, igbvf_driver_name);
- if (err)
- goto err_pci_reg;
-
- pci_set_master(pdev);
-
- err = -ENOMEM;
- netdev = alloc_etherdev(sizeof(struct igbvf_adapter));
- if (!netdev)
- goto err_alloc_etherdev;
-
- SET_NETDEV_DEV(netdev, &pdev->dev);
-
- pci_set_drvdata(pdev, netdev);
- adapter = netdev_priv(netdev);
- hw = &adapter->hw;
- adapter->netdev = netdev;
- adapter->pdev = pdev;
- adapter->ei = ei;
- adapter->pba = ei->pba;
- adapter->flags = ei->flags;
- adapter->hw.back = adapter;
- adapter->hw.mac.type = ei->mac;
- adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
-
- /* PCI config space info */
-
- hw->vendor_id = pdev->vendor;
- hw->device_id = pdev->device;
- hw->subsystem_vendor_id = pdev->subsystem_vendor;
- hw->subsystem_device_id = pdev->subsystem_device;
- hw->revision_id = pdev->revision;
-
- err = -EIO;
- adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0),
- pci_resource_len(pdev, 0));
-
- if (!adapter->hw.hw_addr)
- goto err_ioremap;
-
- if (ei->get_variants) {
- err = ei->get_variants(adapter);
- if (err)
- goto err_ioremap;
- }
-
- /* setup adapter struct */
- err = igbvf_sw_init(adapter);
- if (err)
- goto err_sw_init;
-
- /* construct the net_device struct */
- netdev->netdev_ops = &igbvf_netdev_ops;
-
- igbvf_set_ethtool_ops(netdev);
- netdev->watchdog_timeo = 5 * HZ;
- strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
-
- adapter->bd_number = cards_found++;
-
- netdev->features = NETIF_F_SG |
- NETIF_F_IP_CSUM |
- NETIF_F_HW_VLAN_TX |
- NETIF_F_HW_VLAN_RX |
- NETIF_F_HW_VLAN_FILTER;
-
- netdev->features |= NETIF_F_IPV6_CSUM;
- netdev->features |= NETIF_F_TSO;
- netdev->features |= NETIF_F_TSO6;
-
- if (pci_using_dac)
- netdev->features |= NETIF_F_HIGHDMA;
-
- netdev->vlan_features |= NETIF_F_TSO;
- netdev->vlan_features |= NETIF_F_TSO6;
- netdev->vlan_features |= NETIF_F_IP_CSUM;
- netdev->vlan_features |= NETIF_F_IPV6_CSUM;
- netdev->vlan_features |= NETIF_F_SG;
-
- /*reset the controller to put the device in a known good state */
- err = hw->mac.ops.reset_hw(hw);
- if (err) {
- dev_info(&pdev->dev,
- "PF still in reset state, assigning new address."
- " Is the PF interface up?\n");
- dev_hw_addr_random(adapter->netdev, hw->mac.addr);
- } else {
- err = hw->mac.ops.read_mac_addr(hw);
- if (err) {
- dev_err(&pdev->dev, "Error reading MAC address\n");
- goto err_hw_init;
- }
- }
-
- memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
- memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
-
- if (!is_valid_ether_addr(netdev->perm_addr)) {
- dev_err(&pdev->dev, "Invalid MAC Address: %pM\n",
- netdev->dev_addr);
- err = -EIO;
- goto err_hw_init;
- }
-
- setup_timer(&adapter->watchdog_timer, &igbvf_watchdog,
- (unsigned long) adapter);
-
- INIT_WORK(&adapter->reset_task, igbvf_reset_task);
- INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task);
-
- /* ring size defaults */
- adapter->rx_ring->count = 1024;
- adapter->tx_ring->count = 1024;
-
- /* reset the hardware with the new settings */
- igbvf_reset(adapter);
-
- strcpy(netdev->name, "eth%d");
- err = register_netdev(netdev);
- if (err)
- goto err_hw_init;
-
- /* tell the stack to leave us alone until igbvf_open() is called */
- netif_carrier_off(netdev);
- netif_stop_queue(netdev);
-
- igbvf_print_device_info(adapter);
-
- igbvf_initialize_last_counter_stats(adapter);
-
- return 0;
-
-err_hw_init:
- kfree(adapter->tx_ring);
- kfree(adapter->rx_ring);
-err_sw_init:
- igbvf_reset_interrupt_capability(adapter);
- iounmap(adapter->hw.hw_addr);
-err_ioremap:
- free_netdev(netdev);
-err_alloc_etherdev:
- pci_release_regions(pdev);
-err_pci_reg:
-err_dma:
- pci_disable_device(pdev);
- return err;
-}
-
-/**
- * igbvf_remove - Device Removal Routine
- * @pdev: PCI device information struct
- *
- * igbvf_remove is called by the PCI subsystem to alert the driver
- * that it should release a PCI device. The could be caused by a
- * Hot-Plug event, or because the driver is going to be removed from
- * memory.
- **/
-static void __devexit igbvf_remove(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct igbvf_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
-
- /*
- * The watchdog timer may be rescheduled, so explicitly
- * disable it from being rescheduled.
- */
- set_bit(__IGBVF_DOWN, &adapter->state);
- del_timer_sync(&adapter->watchdog_timer);
-
- cancel_work_sync(&adapter->reset_task);
- cancel_work_sync(&adapter->watchdog_task);
-
- unregister_netdev(netdev);
-
- igbvf_reset_interrupt_capability(adapter);
-
- /*
- * it is important to delete the napi struct prior to freeing the
- * rx ring so that you do not end up with null pointer refs
- */
- netif_napi_del(&adapter->rx_ring->napi);
- kfree(adapter->tx_ring);
- kfree(adapter->rx_ring);
-
- iounmap(hw->hw_addr);
- if (hw->flash_address)
- iounmap(hw->flash_address);
- pci_release_regions(pdev);
-
- free_netdev(netdev);
-
- pci_disable_device(pdev);
-}
-
-/* PCI Error Recovery (ERS) */
-static struct pci_error_handlers igbvf_err_handler = {
- .error_detected = igbvf_io_error_detected,
- .slot_reset = igbvf_io_slot_reset,
- .resume = igbvf_io_resume,
-};
-
-static DEFINE_PCI_DEVICE_TABLE(igbvf_pci_tbl) = {
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_VF), board_i350_vf },
- { } /* terminate list */
-};
-MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl);
-
-/* PCI Device API Driver */
-static struct pci_driver igbvf_driver = {
- .name = igbvf_driver_name,
- .id_table = igbvf_pci_tbl,
- .probe = igbvf_probe,
- .remove = __devexit_p(igbvf_remove),
-#ifdef CONFIG_PM
- /* Power Management Hooks */
- .suspend = igbvf_suspend,
- .resume = igbvf_resume,
-#endif
- .shutdown = igbvf_shutdown,
- .err_handler = &igbvf_err_handler
-};
-
-/**
- * igbvf_init_module - Driver Registration Routine
- *
- * igbvf_init_module is the first routine called when the driver is
- * loaded. All it does is register with the PCI subsystem.
- **/
-static int __init igbvf_init_module(void)
-{
- int ret;
- printk(KERN_INFO "%s - version %s\n",
- igbvf_driver_string, igbvf_driver_version);
- printk(KERN_INFO "%s\n", igbvf_copyright);
-
- ret = pci_register_driver(&igbvf_driver);
-
- return ret;
-}
-module_init(igbvf_init_module);
-
-/**
- * igbvf_exit_module - Driver Exit Cleanup Routine
- *
- * igbvf_exit_module is called just before the driver is removed
- * from memory.
- **/
-static void __exit igbvf_exit_module(void)
-{
- pci_unregister_driver(&igbvf_driver);
-}
-module_exit(igbvf_exit_module);
-
-
-MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
-MODULE_DESCRIPTION("Intel(R) 82576 Virtual Function Network Driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRV_VERSION);
-
-/* netdev.c */
git.openpandora.org / pandora-kernel.git / blobdiff