2010-01-09 02:24:10 +00:00
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/*******************************************************************************
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Intel 82599 Virtual Function driver
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Copyright(c) 1999 - 2009 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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/******************************************************************************
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Copyright (c)2006 - 2007 Myricom, Inc. for some LRO specific code
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******************************************************************************/
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#include <linux/types.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include <linux/vmalloc.h>
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#include <linux/string.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/ipv6.h>
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#include <net/checksum.h>
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#include <net/ip6_checksum.h>
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#include <linux/ethtool.h>
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#include <linux/if_vlan.h>
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#include "ixgbevf.h"
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char ixgbevf_driver_name[] = "ixgbevf";
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static const char ixgbevf_driver_string[] =
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"Intel(R) 82599 Virtual Function";
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#define DRV_VERSION "1.0.0-k0"
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const char ixgbevf_driver_version[] = DRV_VERSION;
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static char ixgbevf_copyright[] = "Copyright (c) 2009 Intel Corporation.";
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static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
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[board_82599_vf] = &ixgbevf_vf_info,
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};
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/* ixgbevf_pci_tbl - PCI Device ID Table
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*
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* Wildcard entries (PCI_ANY_ID) should come last
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* Last entry must be all 0s
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*
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* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
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* Class, Class Mask, private data (not used) }
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*/
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static struct pci_device_id ixgbevf_pci_tbl[] = {
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{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF),
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board_82599_vf},
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/* required last entry */
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{0, }
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};
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MODULE_DEVICE_TABLE(pci, ixgbevf_pci_tbl);
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MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
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MODULE_DESCRIPTION("Intel(R) 82599 Virtual Function Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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#define DEFAULT_DEBUG_LEVEL_SHIFT 3
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/* forward decls */
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static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector);
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static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx,
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u32 itr_reg);
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static inline void ixgbevf_release_rx_desc(struct ixgbe_hw *hw,
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struct ixgbevf_ring *rx_ring,
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u32 val)
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{
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/*
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* Force memory writes to complete before letting h/w
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* know there are new descriptors to fetch. (Only
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* applicable for weak-ordered memory model archs,
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* such as IA-64).
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*/
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wmb();
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IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rx_ring->reg_idx), val);
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}
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/*
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* ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
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* @adapter: pointer to adapter struct
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* @direction: 0 for Rx, 1 for Tx, -1 for other causes
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* @queue: queue to map the corresponding interrupt to
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* @msix_vector: the vector to map to the corresponding queue
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*
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*/
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static void ixgbevf_set_ivar(struct ixgbevf_adapter *adapter, s8 direction,
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u8 queue, u8 msix_vector)
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{
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u32 ivar, index;
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struct ixgbe_hw *hw = &adapter->hw;
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if (direction == -1) {
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/* other causes */
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msix_vector |= IXGBE_IVAR_ALLOC_VAL;
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ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);
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ivar &= ~0xFF;
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ivar |= msix_vector;
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IXGBE_WRITE_REG(hw, IXGBE_VTIVAR_MISC, ivar);
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} else {
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/* tx or rx causes */
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msix_vector |= IXGBE_IVAR_ALLOC_VAL;
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index = ((16 * (queue & 1)) + (8 * direction));
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ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR(queue >> 1));
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ivar &= ~(0xFF << index);
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ivar |= (msix_vector << index);
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IXGBE_WRITE_REG(hw, IXGBE_VTIVAR(queue >> 1), ivar);
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}
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}
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static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_adapter *adapter,
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struct ixgbevf_tx_buffer
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*tx_buffer_info)
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{
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if (tx_buffer_info->dma) {
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if (tx_buffer_info->mapped_as_page)
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pci_unmap_page(adapter->pdev,
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tx_buffer_info->dma,
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tx_buffer_info->length,
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PCI_DMA_TODEVICE);
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else
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pci_unmap_single(adapter->pdev,
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tx_buffer_info->dma,
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tx_buffer_info->length,
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PCI_DMA_TODEVICE);
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tx_buffer_info->dma = 0;
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}
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if (tx_buffer_info->skb) {
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dev_kfree_skb_any(tx_buffer_info->skb);
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tx_buffer_info->skb = NULL;
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}
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tx_buffer_info->time_stamp = 0;
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/* tx_buffer_info must be completely set up in the transmit path */
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}
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static inline bool ixgbevf_check_tx_hang(struct ixgbevf_adapter *adapter,
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struct ixgbevf_ring *tx_ring,
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unsigned int eop)
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{
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struct ixgbe_hw *hw = &adapter->hw;
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u32 head, tail;
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/* Detect a transmit hang in hardware, this serializes the
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* check with the clearing of time_stamp and movement of eop */
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head = readl(hw->hw_addr + tx_ring->head);
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tail = readl(hw->hw_addr + tx_ring->tail);
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adapter->detect_tx_hung = false;
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if ((head != tail) &&
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tx_ring->tx_buffer_info[eop].time_stamp &&
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time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ)) {
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/* detected Tx unit hang */
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union ixgbe_adv_tx_desc *tx_desc;
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tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
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printk(KERN_ERR "Detected Tx Unit Hang\n"
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" Tx Queue <%d>\n"
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" TDH, TDT <%x>, <%x>\n"
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" next_to_use <%x>\n"
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" next_to_clean <%x>\n"
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"tx_buffer_info[next_to_clean]\n"
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" time_stamp <%lx>\n"
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" jiffies <%lx>\n",
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tx_ring->queue_index,
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head, tail,
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tx_ring->next_to_use, eop,
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tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
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return true;
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}
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return false;
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}
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#define IXGBE_MAX_TXD_PWR 14
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#define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
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/* Tx Descriptors needed, worst case */
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#define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
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(((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
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#ifdef MAX_SKB_FRAGS
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#define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
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MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
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#else
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#define DESC_NEEDED TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD)
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#endif
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static void ixgbevf_tx_timeout(struct net_device *netdev);
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/**
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* ixgbevf_clean_tx_irq - Reclaim resources after transmit completes
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* @adapter: board private structure
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* @tx_ring: tx ring to clean
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**/
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static bool ixgbevf_clean_tx_irq(struct ixgbevf_adapter *adapter,
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struct ixgbevf_ring *tx_ring)
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{
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struct net_device *netdev = adapter->netdev;
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struct ixgbe_hw *hw = &adapter->hw;
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union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
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struct ixgbevf_tx_buffer *tx_buffer_info;
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unsigned int i, eop, count = 0;
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unsigned int total_bytes = 0, total_packets = 0;
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i = tx_ring->next_to_clean;
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eop = tx_ring->tx_buffer_info[i].next_to_watch;
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eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
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while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
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(count < tx_ring->work_limit)) {
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bool cleaned = false;
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for ( ; !cleaned; count++) {
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struct sk_buff *skb;
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tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
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tx_buffer_info = &tx_ring->tx_buffer_info[i];
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cleaned = (i == eop);
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skb = tx_buffer_info->skb;
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if (cleaned && skb) {
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unsigned int segs, bytecount;
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/* gso_segs is currently only valid for tcp */
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segs = skb_shinfo(skb)->gso_segs ?: 1;
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/* multiply data chunks by size of headers */
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bytecount = ((segs - 1) * skb_headlen(skb)) +
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skb->len;
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total_packets += segs;
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total_bytes += bytecount;
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}
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ixgbevf_unmap_and_free_tx_resource(adapter,
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tx_buffer_info);
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tx_desc->wb.status = 0;
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i++;
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if (i == tx_ring->count)
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i = 0;
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}
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eop = tx_ring->tx_buffer_info[i].next_to_watch;
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eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
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}
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tx_ring->next_to_clean = i;
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#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
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if (unlikely(count && netif_carrier_ok(netdev) &&
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(IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
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/* Make sure that anybody stopping the queue after this
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* sees the new next_to_clean.
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*/
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smp_mb();
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#ifdef HAVE_TX_MQ
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if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
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!test_bit(__IXGBEVF_DOWN, &adapter->state)) {
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netif_wake_subqueue(netdev, tx_ring->queue_index);
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++adapter->restart_queue;
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}
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#else
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if (netif_queue_stopped(netdev) &&
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!test_bit(__IXGBEVF_DOWN, &adapter->state)) {
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netif_wake_queue(netdev);
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++adapter->restart_queue;
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}
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#endif
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}
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if (adapter->detect_tx_hung) {
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if (ixgbevf_check_tx_hang(adapter, tx_ring, i)) {
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/* schedule immediate reset if we believe we hung */
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printk(KERN_INFO
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"tx hang %d detected, resetting adapter\n",
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adapter->tx_timeout_count + 1);
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ixgbevf_tx_timeout(adapter->netdev);
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}
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}
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/* re-arm the interrupt */
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if ((count >= tx_ring->work_limit) &&
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(!test_bit(__IXGBEVF_DOWN, &adapter->state))) {
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IXGBE_WRITE_REG(hw, IXGBE_VTEICS, tx_ring->v_idx);
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}
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tx_ring->total_bytes += total_bytes;
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tx_ring->total_packets += total_packets;
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adapter->net_stats.tx_bytes += total_bytes;
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adapter->net_stats.tx_packets += total_packets;
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return (count < tx_ring->work_limit);
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}
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/**
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* ixgbevf_receive_skb - Send a completed packet up the stack
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* @q_vector: structure containing interrupt and ring information
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* @skb: packet to send up
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* @status: hardware indication of status of receive
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* @rx_ring: rx descriptor ring (for a specific queue) to setup
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* @rx_desc: rx descriptor
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**/
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static void ixgbevf_receive_skb(struct ixgbevf_q_vector *q_vector,
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struct sk_buff *skb, u8 status,
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struct ixgbevf_ring *ring,
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union ixgbe_adv_rx_desc *rx_desc)
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{
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struct ixgbevf_adapter *adapter = q_vector->adapter;
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bool is_vlan = (status & IXGBE_RXD_STAT_VP);
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u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
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int ret;
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if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
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if (adapter->vlgrp && is_vlan)
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vlan_gro_receive(&q_vector->napi,
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adapter->vlgrp,
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tag, skb);
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else
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napi_gro_receive(&q_vector->napi, skb);
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} else {
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if (adapter->vlgrp && is_vlan)
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ret = vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
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else
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ret = netif_rx(skb);
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}
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}
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|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
|
|
|
|
* @adapter: address of board private structure
|
|
|
|
* @status_err: hardware indication of status of receive
|
|
|
|
* @skb: skb currently being received and modified
|
|
|
|
**/
|
|
|
|
static inline void ixgbevf_rx_checksum(struct ixgbevf_adapter *adapter,
|
|
|
|
u32 status_err, struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
|
|
|
|
|
|
/* Rx csum disabled */
|
|
|
|
if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* if IP and error */
|
|
|
|
if ((status_err & IXGBE_RXD_STAT_IPCS) &&
|
|
|
|
(status_err & IXGBE_RXDADV_ERR_IPE)) {
|
|
|
|
adapter->hw_csum_rx_error++;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!(status_err & IXGBE_RXD_STAT_L4CS))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (status_err & IXGBE_RXDADV_ERR_TCPE) {
|
|
|
|
adapter->hw_csum_rx_error++;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* It must be a TCP or UDP packet with a valid checksum */
|
|
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
|
|
adapter->hw_csum_rx_good++;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split
|
|
|
|
* @adapter: address of board private structure
|
|
|
|
**/
|
|
|
|
static void ixgbevf_alloc_rx_buffers(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *rx_ring,
|
|
|
|
int cleaned_count)
|
|
|
|
{
|
|
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
union ixgbe_adv_rx_desc *rx_desc;
|
|
|
|
struct ixgbevf_rx_buffer *bi;
|
|
|
|
struct sk_buff *skb;
|
|
|
|
unsigned int i;
|
|
|
|
unsigned int bufsz = rx_ring->rx_buf_len + NET_IP_ALIGN;
|
|
|
|
|
|
|
|
i = rx_ring->next_to_use;
|
|
|
|
bi = &rx_ring->rx_buffer_info[i];
|
|
|
|
|
|
|
|
while (cleaned_count--) {
|
|
|
|
rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
|
|
|
|
|
|
|
|
if (!bi->page_dma &&
|
|
|
|
(adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) {
|
|
|
|
if (!bi->page) {
|
|
|
|
bi->page = netdev_alloc_page(adapter->netdev);
|
|
|
|
if (!bi->page) {
|
|
|
|
adapter->alloc_rx_page_failed++;
|
|
|
|
goto no_buffers;
|
|
|
|
}
|
|
|
|
bi->page_offset = 0;
|
|
|
|
} else {
|
|
|
|
/* use a half page if we're re-using */
|
|
|
|
bi->page_offset ^= (PAGE_SIZE / 2);
|
|
|
|
}
|
|
|
|
|
|
|
|
bi->page_dma = pci_map_page(pdev, bi->page,
|
|
|
|
bi->page_offset,
|
|
|
|
(PAGE_SIZE / 2),
|
|
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
}
|
|
|
|
|
|
|
|
skb = bi->skb;
|
|
|
|
if (!skb) {
|
|
|
|
skb = netdev_alloc_skb(adapter->netdev,
|
|
|
|
bufsz);
|
|
|
|
|
|
|
|
if (!skb) {
|
|
|
|
adapter->alloc_rx_buff_failed++;
|
|
|
|
goto no_buffers;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Make buffer alignment 2 beyond a 16 byte boundary
|
|
|
|
* this will result in a 16 byte aligned IP header after
|
|
|
|
* the 14 byte MAC header is removed
|
|
|
|
*/
|
|
|
|
skb_reserve(skb, NET_IP_ALIGN);
|
|
|
|
|
|
|
|
bi->skb = skb;
|
|
|
|
}
|
|
|
|
if (!bi->dma) {
|
|
|
|
bi->dma = pci_map_single(pdev, skb->data,
|
|
|
|
rx_ring->rx_buf_len,
|
|
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
}
|
|
|
|
/* Refresh the desc even if buffer_addrs didn't change because
|
|
|
|
* each write-back erases this info. */
|
|
|
|
if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
|
|
|
|
rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
|
|
|
|
rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
|
|
|
|
} else {
|
|
|
|
rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
|
|
|
|
}
|
|
|
|
|
|
|
|
i++;
|
|
|
|
if (i == rx_ring->count)
|
|
|
|
i = 0;
|
|
|
|
bi = &rx_ring->rx_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);
|
|
|
|
|
|
|
|
ixgbevf_release_rx_desc(&adapter->hw, rx_ring, i);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter *adapter,
|
|
|
|
u64 qmask)
|
|
|
|
{
|
|
|
|
u32 mask;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
|
|
|
|
mask = (qmask & 0xFFFFFFFF);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline u16 ixgbevf_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc)
|
|
|
|
{
|
|
|
|
return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline u16 ixgbevf_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc)
|
|
|
|
{
|
|
|
|
return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector,
|
|
|
|
struct ixgbevf_ring *rx_ring,
|
|
|
|
int *work_done, int work_to_do)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = q_vector->adapter;
|
|
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
|
|
|
|
struct ixgbevf_rx_buffer *rx_buffer_info, *next_buffer;
|
|
|
|
struct sk_buff *skb;
|
|
|
|
unsigned int i;
|
|
|
|
u32 len, staterr;
|
|
|
|
u16 hdr_info;
|
|
|
|
bool cleaned = false;
|
|
|
|
int cleaned_count = 0;
|
|
|
|
unsigned int total_rx_bytes = 0, total_rx_packets = 0;
|
|
|
|
|
|
|
|
i = rx_ring->next_to_clean;
|
|
|
|
rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
|
|
|
|
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
|
|
|
|
rx_buffer_info = &rx_ring->rx_buffer_info[i];
|
|
|
|
|
|
|
|
while (staterr & IXGBE_RXD_STAT_DD) {
|
|
|
|
u32 upper_len = 0;
|
|
|
|
if (*work_done >= work_to_do)
|
|
|
|
break;
|
|
|
|
(*work_done)++;
|
|
|
|
|
|
|
|
if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
|
|
|
|
hdr_info = le16_to_cpu(ixgbevf_get_hdr_info(rx_desc));
|
|
|
|
len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
|
|
|
|
IXGBE_RXDADV_HDRBUFLEN_SHIFT;
|
|
|
|
if (hdr_info & IXGBE_RXDADV_SPH)
|
|
|
|
adapter->rx_hdr_split++;
|
|
|
|
if (len > IXGBEVF_RX_HDR_SIZE)
|
|
|
|
len = IXGBEVF_RX_HDR_SIZE;
|
|
|
|
upper_len = le16_to_cpu(rx_desc->wb.upper.length);
|
|
|
|
} else {
|
|
|
|
len = le16_to_cpu(rx_desc->wb.upper.length);
|
|
|
|
}
|
|
|
|
cleaned = true;
|
|
|
|
skb = rx_buffer_info->skb;
|
|
|
|
prefetch(skb->data - NET_IP_ALIGN);
|
|
|
|
rx_buffer_info->skb = NULL;
|
|
|
|
|
|
|
|
if (rx_buffer_info->dma) {
|
|
|
|
pci_unmap_single(pdev, rx_buffer_info->dma,
|
|
|
|
rx_ring->rx_buf_len,
|
|
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
rx_buffer_info->dma = 0;
|
|
|
|
skb_put(skb, len);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (upper_len) {
|
|
|
|
pci_unmap_page(pdev, rx_buffer_info->page_dma,
|
|
|
|
PAGE_SIZE / 2, PCI_DMA_FROMDEVICE);
|
|
|
|
rx_buffer_info->page_dma = 0;
|
|
|
|
skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
|
|
|
|
rx_buffer_info->page,
|
|
|
|
rx_buffer_info->page_offset,
|
|
|
|
upper_len);
|
|
|
|
|
|
|
|
if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
|
|
|
|
(page_count(rx_buffer_info->page) != 1))
|
|
|
|
rx_buffer_info->page = NULL;
|
|
|
|
else
|
|
|
|
get_page(rx_buffer_info->page);
|
|
|
|
|
|
|
|
skb->len += upper_len;
|
|
|
|
skb->data_len += upper_len;
|
|
|
|
skb->truesize += upper_len;
|
|
|
|
}
|
|
|
|
|
|
|
|
i++;
|
|
|
|
if (i == rx_ring->count)
|
|
|
|
i = 0;
|
|
|
|
|
|
|
|
next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i);
|
|
|
|
prefetch(next_rxd);
|
|
|
|
cleaned_count++;
|
|
|
|
|
|
|
|
next_buffer = &rx_ring->rx_buffer_info[i];
|
|
|
|
|
|
|
|
if (!(staterr & IXGBE_RXD_STAT_EOP)) {
|
|
|
|
if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
|
|
|
|
rx_buffer_info->skb = next_buffer->skb;
|
|
|
|
rx_buffer_info->dma = next_buffer->dma;
|
|
|
|
next_buffer->skb = skb;
|
|
|
|
next_buffer->dma = 0;
|
|
|
|
} else {
|
|
|
|
skb->next = next_buffer->skb;
|
|
|
|
skb->next->prev = skb;
|
|
|
|
}
|
|
|
|
adapter->non_eop_descs++;
|
|
|
|
goto next_desc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* ERR_MASK will only have valid bits if EOP set */
|
|
|
|
if (unlikely(staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK)) {
|
|
|
|
dev_kfree_skb_irq(skb);
|
|
|
|
goto next_desc;
|
|
|
|
}
|
|
|
|
|
|
|
|
ixgbevf_rx_checksum(adapter, staterr, skb);
|
|
|
|
|
|
|
|
/* probably a little skewed due to removing CRC */
|
|
|
|
total_rx_bytes += skb->len;
|
|
|
|
total_rx_packets++;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Work around issue of some types of VM to VM loop back
|
|
|
|
* packets not getting split correctly
|
|
|
|
*/
|
|
|
|
if (staterr & IXGBE_RXD_STAT_LB) {
|
|
|
|
u32 header_fixup_len = skb->len - skb->data_len;
|
|
|
|
if (header_fixup_len < 14)
|
|
|
|
skb_push(skb, header_fixup_len);
|
|
|
|
}
|
|
|
|
skb->protocol = eth_type_trans(skb, adapter->netdev);
|
|
|
|
|
|
|
|
ixgbevf_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
|
|
|
|
adapter->netdev->last_rx = jiffies;
|
|
|
|
|
|
|
|
next_desc:
|
|
|
|
rx_desc->wb.upper.status_error = 0;
|
|
|
|
|
|
|
|
/* return some buffers to hardware, one at a time is too slow */
|
|
|
|
if (cleaned_count >= IXGBEVF_RX_BUFFER_WRITE) {
|
|
|
|
ixgbevf_alloc_rx_buffers(adapter, rx_ring,
|
|
|
|
cleaned_count);
|
|
|
|
cleaned_count = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* use prefetched values */
|
|
|
|
rx_desc = next_rxd;
|
|
|
|
rx_buffer_info = &rx_ring->rx_buffer_info[i];
|
|
|
|
|
|
|
|
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
|
|
|
|
}
|
|
|
|
|
|
|
|
rx_ring->next_to_clean = i;
|
|
|
|
cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
|
|
|
|
|
|
|
|
if (cleaned_count)
|
|
|
|
ixgbevf_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
|
|
|
|
|
|
|
|
rx_ring->total_packets += total_rx_packets;
|
|
|
|
rx_ring->total_bytes += total_rx_bytes;
|
|
|
|
adapter->net_stats.rx_bytes += total_rx_bytes;
|
|
|
|
adapter->net_stats.rx_packets += total_rx_packets;
|
|
|
|
|
|
|
|
return cleaned;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_clean_rxonly - msix (aka one shot) rx clean routine
|
|
|
|
* @napi: napi struct with our devices info in it
|
|
|
|
* @budget: amount of work driver is allowed to do this pass, in packets
|
|
|
|
*
|
|
|
|
* This function is optimized for cleaning one queue only on a single
|
|
|
|
* q_vector!!!
|
|
|
|
**/
|
|
|
|
static int ixgbevf_clean_rxonly(struct napi_struct *napi, int budget)
|
|
|
|
{
|
|
|
|
struct ixgbevf_q_vector *q_vector =
|
|
|
|
container_of(napi, struct ixgbevf_q_vector, napi);
|
|
|
|
struct ixgbevf_adapter *adapter = q_vector->adapter;
|
|
|
|
struct ixgbevf_ring *rx_ring = NULL;
|
|
|
|
int work_done = 0;
|
|
|
|
long r_idx;
|
|
|
|
|
|
|
|
r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
|
|
|
|
rx_ring = &(adapter->rx_ring[r_idx]);
|
|
|
|
|
|
|
|
ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
|
|
|
|
|
|
|
|
/* If all Rx work done, exit the polling mode */
|
|
|
|
if (work_done < budget) {
|
|
|
|
napi_complete(napi);
|
|
|
|
if (adapter->itr_setting & 1)
|
|
|
|
ixgbevf_set_itr_msix(q_vector);
|
|
|
|
if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
|
|
|
|
ixgbevf_irq_enable_queues(adapter, rx_ring->v_idx);
|
|
|
|
}
|
|
|
|
|
|
|
|
return work_done;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_clean_rxonly_many - msix (aka one shot) rx clean routine
|
|
|
|
* @napi: napi struct with our devices info in it
|
|
|
|
* @budget: amount of work driver is allowed to do this pass, in packets
|
|
|
|
*
|
|
|
|
* This function will clean more than one rx queue associated with a
|
|
|
|
* q_vector.
|
|
|
|
**/
|
|
|
|
static int ixgbevf_clean_rxonly_many(struct napi_struct *napi, int budget)
|
|
|
|
{
|
|
|
|
struct ixgbevf_q_vector *q_vector =
|
|
|
|
container_of(napi, struct ixgbevf_q_vector, napi);
|
|
|
|
struct ixgbevf_adapter *adapter = q_vector->adapter;
|
|
|
|
struct ixgbevf_ring *rx_ring = NULL;
|
|
|
|
int work_done = 0, i;
|
|
|
|
long r_idx;
|
|
|
|
u64 enable_mask = 0;
|
|
|
|
|
|
|
|
/* attempt to distribute budget to each queue fairly, but don't allow
|
|
|
|
* the budget to go below 1 because we'll exit polling */
|
|
|
|
budget /= (q_vector->rxr_count ?: 1);
|
|
|
|
budget = max(budget, 1);
|
|
|
|
r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
|
|
|
|
for (i = 0; i < q_vector->rxr_count; i++) {
|
|
|
|
rx_ring = &(adapter->rx_ring[r_idx]);
|
|
|
|
ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
|
|
|
|
enable_mask |= rx_ring->v_idx;
|
|
|
|
r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
|
|
|
|
r_idx + 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifndef HAVE_NETDEV_NAPI_LIST
|
|
|
|
if (!netif_running(adapter->netdev))
|
|
|
|
work_done = 0;
|
|
|
|
|
|
|
|
#endif
|
|
|
|
r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
|
|
|
|
rx_ring = &(adapter->rx_ring[r_idx]);
|
|
|
|
|
|
|
|
/* If all Rx work done, exit the polling mode */
|
|
|
|
if (work_done < budget) {
|
|
|
|
napi_complete(napi);
|
|
|
|
if (adapter->itr_setting & 1)
|
|
|
|
ixgbevf_set_itr_msix(q_vector);
|
|
|
|
if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
|
|
|
|
ixgbevf_irq_enable_queues(adapter, enable_mask);
|
|
|
|
}
|
|
|
|
|
|
|
|
return work_done;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_configure_msix - Configure MSI-X hardware
|
|
|
|
* @adapter: board private structure
|
|
|
|
*
|
|
|
|
* ixgbevf_configure_msix sets up the hardware to properly generate MSI-X
|
|
|
|
* interrupts.
|
|
|
|
**/
|
|
|
|
static void ixgbevf_configure_msix(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ixgbevf_q_vector *q_vector;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
int i, j, q_vectors, v_idx, r_idx;
|
|
|
|
u32 mask;
|
|
|
|
|
|
|
|
q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Populate the IVAR table and set the ITR values to the
|
|
|
|
* corresponding register.
|
|
|
|
*/
|
|
|
|
for (v_idx = 0; v_idx < q_vectors; v_idx++) {
|
|
|
|
q_vector = adapter->q_vector[v_idx];
|
|
|
|
/* XXX for_each_bit(...) */
|
|
|
|
r_idx = find_first_bit(q_vector->rxr_idx,
|
|
|
|
adapter->num_rx_queues);
|
|
|
|
|
|
|
|
for (i = 0; i < q_vector->rxr_count; i++) {
|
|
|
|
j = adapter->rx_ring[r_idx].reg_idx;
|
|
|
|
ixgbevf_set_ivar(adapter, 0, j, v_idx);
|
|
|
|
r_idx = find_next_bit(q_vector->rxr_idx,
|
|
|
|
adapter->num_rx_queues,
|
|
|
|
r_idx + 1);
|
|
|
|
}
|
|
|
|
r_idx = find_first_bit(q_vector->txr_idx,
|
|
|
|
adapter->num_tx_queues);
|
|
|
|
|
|
|
|
for (i = 0; i < q_vector->txr_count; i++) {
|
|
|
|
j = adapter->tx_ring[r_idx].reg_idx;
|
|
|
|
ixgbevf_set_ivar(adapter, 1, j, v_idx);
|
|
|
|
r_idx = find_next_bit(q_vector->txr_idx,
|
|
|
|
adapter->num_tx_queues,
|
|
|
|
r_idx + 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* if this is a tx only vector halve the interrupt rate */
|
|
|
|
if (q_vector->txr_count && !q_vector->rxr_count)
|
|
|
|
q_vector->eitr = (adapter->eitr_param >> 1);
|
|
|
|
else if (q_vector->rxr_count)
|
|
|
|
/* rx only */
|
|
|
|
q_vector->eitr = adapter->eitr_param;
|
|
|
|
|
|
|
|
ixgbevf_write_eitr(adapter, v_idx, q_vector->eitr);
|
|
|
|
}
|
|
|
|
|
|
|
|
ixgbevf_set_ivar(adapter, -1, 1, v_idx);
|
|
|
|
|
|
|
|
/* set up to autoclear timer, and the vectors */
|
|
|
|
mask = IXGBE_EIMS_ENABLE_MASK;
|
|
|
|
mask &= ~IXGBE_EIMS_OTHER;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, mask);
|
|
|
|
}
|
|
|
|
|
|
|
|
enum latency_range {
|
|
|
|
lowest_latency = 0,
|
|
|
|
low_latency = 1,
|
|
|
|
bulk_latency = 2,
|
|
|
|
latency_invalid = 255
|
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_update_itr - update the dynamic ITR value based on statistics
|
|
|
|
* @adapter: pointer to adapter
|
|
|
|
* @eitr: eitr setting (ints per sec) to give last timeslice
|
|
|
|
* @itr_setting: current throttle rate in ints/second
|
|
|
|
* @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.
|
|
|
|
**/
|
|
|
|
static u8 ixgbevf_update_itr(struct ixgbevf_adapter *adapter,
|
|
|
|
u32 eitr, u8 itr_setting,
|
|
|
|
int packets, int bytes)
|
|
|
|
{
|
|
|
|
unsigned int retval = itr_setting;
|
|
|
|
u32 timepassed_us;
|
|
|
|
u64 bytes_perint;
|
|
|
|
|
|
|
|
if (packets == 0)
|
|
|
|
goto update_itr_done;
|
|
|
|
|
|
|
|
|
|
|
|
/* simple throttlerate management
|
|
|
|
* 0-20MB/s lowest (100000 ints/s)
|
|
|
|
* 20-100MB/s low (20000 ints/s)
|
|
|
|
* 100-1249MB/s bulk (8000 ints/s)
|
|
|
|
*/
|
|
|
|
/* what was last interrupt timeslice? */
|
|
|
|
timepassed_us = 1000000/eitr;
|
|
|
|
bytes_perint = bytes / timepassed_us; /* bytes/usec */
|
|
|
|
|
|
|
|
switch (itr_setting) {
|
|
|
|
case lowest_latency:
|
|
|
|
if (bytes_perint > adapter->eitr_low)
|
|
|
|
retval = low_latency;
|
|
|
|
break;
|
|
|
|
case low_latency:
|
|
|
|
if (bytes_perint > adapter->eitr_high)
|
|
|
|
retval = bulk_latency;
|
|
|
|
else if (bytes_perint <= adapter->eitr_low)
|
|
|
|
retval = lowest_latency;
|
|
|
|
break;
|
|
|
|
case bulk_latency:
|
|
|
|
if (bytes_perint <= adapter->eitr_high)
|
|
|
|
retval = low_latency;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
update_itr_done:
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_write_eitr - write VTEITR register in hardware specific way
|
|
|
|
* @adapter: pointer to adapter struct
|
|
|
|
* @v_idx: vector index into q_vector array
|
|
|
|
* @itr_reg: new value to be written in *register* format, not ints/s
|
|
|
|
*
|
|
|
|
* This function is made to be called by ethtool and by the driver
|
|
|
|
* when it needs to update VTEITR registers at runtime. Hardware
|
|
|
|
* specific quirks/differences are taken care of here.
|
|
|
|
*/
|
|
|
|
static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx,
|
|
|
|
u32 itr_reg)
|
|
|
|
{
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
|
|
|
|
itr_reg = EITR_INTS_PER_SEC_TO_REG(itr_reg);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* set the WDIS bit to not clear the timer bits and cause an
|
|
|
|
* immediate assertion of the interrupt
|
|
|
|
*/
|
|
|
|
itr_reg |= IXGBE_EITR_CNT_WDIS;
|
|
|
|
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VTEITR(v_idx), itr_reg);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = q_vector->adapter;
|
|
|
|
u32 new_itr;
|
|
|
|
u8 current_itr, ret_itr;
|
|
|
|
int i, r_idx, v_idx = q_vector->v_idx;
|
|
|
|
struct ixgbevf_ring *rx_ring, *tx_ring;
|
|
|
|
|
|
|
|
r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
|
|
|
|
for (i = 0; i < q_vector->txr_count; i++) {
|
|
|
|
tx_ring = &(adapter->tx_ring[r_idx]);
|
|
|
|
ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr,
|
|
|
|
q_vector->tx_itr,
|
|
|
|
tx_ring->total_packets,
|
|
|
|
tx_ring->total_bytes);
|
|
|
|
/* if the result for this queue would decrease interrupt
|
|
|
|
* rate for this vector then use that result */
|
|
|
|
q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
|
|
|
|
q_vector->tx_itr - 1 : ret_itr);
|
|
|
|
r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
|
|
|
|
r_idx + 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
|
|
|
|
for (i = 0; i < q_vector->rxr_count; i++) {
|
|
|
|
rx_ring = &(adapter->rx_ring[r_idx]);
|
|
|
|
ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr,
|
|
|
|
q_vector->rx_itr,
|
|
|
|
rx_ring->total_packets,
|
|
|
|
rx_ring->total_bytes);
|
|
|
|
/* if the result for this queue would decrease interrupt
|
|
|
|
* rate for this vector then use that result */
|
|
|
|
q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
|
|
|
|
q_vector->rx_itr - 1 : ret_itr);
|
|
|
|
r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
|
|
|
|
r_idx + 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
|
|
|
|
|
|
|
|
switch (current_itr) {
|
|
|
|
/* counts and packets in update_itr are dependent on these numbers */
|
|
|
|
case lowest_latency:
|
|
|
|
new_itr = 100000;
|
|
|
|
break;
|
|
|
|
case low_latency:
|
|
|
|
new_itr = 20000; /* aka hwitr = ~200 */
|
|
|
|
break;
|
|
|
|
case bulk_latency:
|
|
|
|
default:
|
|
|
|
new_itr = 8000;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (new_itr != q_vector->eitr) {
|
|
|
|
u32 itr_reg;
|
|
|
|
|
|
|
|
/* save the algorithm value here, not the smoothed one */
|
|
|
|
q_vector->eitr = new_itr;
|
|
|
|
/* do an exponential smoothing */
|
|
|
|
new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
|
|
|
|
itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr);
|
|
|
|
ixgbevf_write_eitr(adapter, v_idx, itr_reg);
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static irqreturn_t ixgbevf_msix_mbx(int irq, void *data)
|
|
|
|
{
|
|
|
|
struct net_device *netdev = data;
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
u32 eicr;
|
2010-01-22 22:47:00 +00:00
|
|
|
u32 msg;
|
2010-01-09 02:24:10 +00:00
|
|
|
|
|
|
|
eicr = IXGBE_READ_REG(hw, IXGBE_VTEICS);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VTEICR, eicr);
|
|
|
|
|
2010-01-22 22:47:00 +00:00
|
|
|
hw->mbx.ops.read(hw, &msg, 1);
|
|
|
|
|
|
|
|
if ((msg & IXGBE_MBVFICR_VFREQ_MASK) == IXGBE_PF_CONTROL_MSG)
|
|
|
|
mod_timer(&adapter->watchdog_timer,
|
|
|
|
round_jiffies(jiffies + 10));
|
|
|
|
|
2010-01-09 02:24:10 +00:00
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
|
|
|
static irqreturn_t ixgbevf_msix_clean_tx(int irq, void *data)
|
|
|
|
{
|
|
|
|
struct ixgbevf_q_vector *q_vector = data;
|
|
|
|
struct ixgbevf_adapter *adapter = q_vector->adapter;
|
|
|
|
struct ixgbevf_ring *tx_ring;
|
|
|
|
int i, r_idx;
|
|
|
|
|
|
|
|
if (!q_vector->txr_count)
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
|
|
|
|
r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
|
|
|
|
for (i = 0; i < q_vector->txr_count; i++) {
|
|
|
|
tx_ring = &(adapter->tx_ring[r_idx]);
|
|
|
|
tx_ring->total_bytes = 0;
|
|
|
|
tx_ring->total_packets = 0;
|
|
|
|
ixgbevf_clean_tx_irq(adapter, tx_ring);
|
|
|
|
r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
|
|
|
|
r_idx + 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (adapter->itr_setting & 1)
|
|
|
|
ixgbevf_set_itr_msix(q_vector);
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
|
|
|
|
* @irq: unused
|
|
|
|
* @data: pointer to our q_vector struct for this interrupt vector
|
|
|
|
**/
|
|
|
|
static irqreturn_t ixgbevf_msix_clean_rx(int irq, void *data)
|
|
|
|
{
|
|
|
|
struct ixgbevf_q_vector *q_vector = data;
|
|
|
|
struct ixgbevf_adapter *adapter = q_vector->adapter;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
struct ixgbevf_ring *rx_ring;
|
|
|
|
int r_idx;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
|
|
|
|
for (i = 0; i < q_vector->rxr_count; i++) {
|
|
|
|
rx_ring = &(adapter->rx_ring[r_idx]);
|
|
|
|
rx_ring->total_bytes = 0;
|
|
|
|
rx_ring->total_packets = 0;
|
|
|
|
r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
|
|
|
|
r_idx + 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!q_vector->rxr_count)
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
|
|
|
|
r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
|
|
|
|
rx_ring = &(adapter->rx_ring[r_idx]);
|
|
|
|
/* disable interrupts on this vector only */
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, rx_ring->v_idx);
|
|
|
|
napi_schedule(&q_vector->napi);
|
|
|
|
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
|
|
|
static irqreturn_t ixgbevf_msix_clean_many(int irq, void *data)
|
|
|
|
{
|
|
|
|
ixgbevf_msix_clean_rx(irq, data);
|
|
|
|
ixgbevf_msix_clean_tx(irq, data);
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void map_vector_to_rxq(struct ixgbevf_adapter *a, int v_idx,
|
|
|
|
int r_idx)
|
|
|
|
{
|
|
|
|
struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx];
|
|
|
|
|
|
|
|
set_bit(r_idx, q_vector->rxr_idx);
|
|
|
|
q_vector->rxr_count++;
|
|
|
|
a->rx_ring[r_idx].v_idx = 1 << v_idx;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void map_vector_to_txq(struct ixgbevf_adapter *a, int v_idx,
|
|
|
|
int t_idx)
|
|
|
|
{
|
|
|
|
struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx];
|
|
|
|
|
|
|
|
set_bit(t_idx, q_vector->txr_idx);
|
|
|
|
q_vector->txr_count++;
|
|
|
|
a->tx_ring[t_idx].v_idx = 1 << v_idx;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors
|
|
|
|
* @adapter: board private structure to initialize
|
|
|
|
*
|
|
|
|
* This function maps descriptor rings to the queue-specific vectors
|
|
|
|
* we were allotted through the MSI-X enabling code. Ideally, we'd have
|
|
|
|
* one vector per ring/queue, but on a constrained vector budget, we
|
|
|
|
* group the rings as "efficiently" as possible. You would add new
|
|
|
|
* mapping configurations in here.
|
|
|
|
**/
|
|
|
|
static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int q_vectors;
|
|
|
|
int v_start = 0;
|
|
|
|
int rxr_idx = 0, txr_idx = 0;
|
|
|
|
int rxr_remaining = adapter->num_rx_queues;
|
|
|
|
int txr_remaining = adapter->num_tx_queues;
|
|
|
|
int i, j;
|
|
|
|
int rqpv, tqpv;
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The ideal configuration...
|
|
|
|
* We have enough vectors to map one per queue.
|
|
|
|
*/
|
|
|
|
if (q_vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
|
|
|
|
for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
|
|
|
|
map_vector_to_rxq(adapter, v_start, rxr_idx);
|
|
|
|
|
|
|
|
for (; txr_idx < txr_remaining; v_start++, txr_idx++)
|
|
|
|
map_vector_to_txq(adapter, v_start, txr_idx);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we don't have enough vectors for a 1-to-1
|
|
|
|
* mapping, we'll have to group them so there are
|
|
|
|
* multiple queues per vector.
|
|
|
|
*/
|
|
|
|
/* Re-adjusting *qpv takes care of the remainder. */
|
|
|
|
for (i = v_start; i < q_vectors; i++) {
|
|
|
|
rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
|
|
|
|
for (j = 0; j < rqpv; j++) {
|
|
|
|
map_vector_to_rxq(adapter, i, rxr_idx);
|
|
|
|
rxr_idx++;
|
|
|
|
rxr_remaining--;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for (i = v_start; i < q_vectors; i++) {
|
|
|
|
tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
|
|
|
|
for (j = 0; j < tqpv; j++) {
|
|
|
|
map_vector_to_txq(adapter, i, txr_idx);
|
|
|
|
txr_idx++;
|
|
|
|
txr_remaining--;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_request_msix_irqs - Initialize MSI-X interrupts
|
|
|
|
* @adapter: board private structure
|
|
|
|
*
|
|
|
|
* ixgbevf_request_msix_irqs allocates MSI-X vectors and requests
|
|
|
|
* interrupts from the kernel.
|
|
|
|
**/
|
|
|
|
static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
irqreturn_t (*handler)(int, void *);
|
|
|
|
int i, vector, q_vectors, err;
|
|
|
|
int ri = 0, ti = 0;
|
|
|
|
|
|
|
|
/* Decrement for Other and TCP Timer vectors */
|
|
|
|
q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
|
|
|
|
|
|
|
|
#define SET_HANDLER(_v) (((_v)->rxr_count && (_v)->txr_count) \
|
|
|
|
? &ixgbevf_msix_clean_many : \
|
|
|
|
(_v)->rxr_count ? &ixgbevf_msix_clean_rx : \
|
|
|
|
(_v)->txr_count ? &ixgbevf_msix_clean_tx : \
|
|
|
|
NULL)
|
|
|
|
for (vector = 0; vector < q_vectors; vector++) {
|
|
|
|
handler = SET_HANDLER(adapter->q_vector[vector]);
|
|
|
|
|
|
|
|
if (handler == &ixgbevf_msix_clean_rx) {
|
|
|
|
sprintf(adapter->name[vector], "%s-%s-%d",
|
|
|
|
netdev->name, "rx", ri++);
|
|
|
|
} else if (handler == &ixgbevf_msix_clean_tx) {
|
|
|
|
sprintf(adapter->name[vector], "%s-%s-%d",
|
|
|
|
netdev->name, "tx", ti++);
|
|
|
|
} else if (handler == &ixgbevf_msix_clean_many) {
|
|
|
|
sprintf(adapter->name[vector], "%s-%s-%d",
|
|
|
|
netdev->name, "TxRx", vector);
|
|
|
|
} else {
|
|
|
|
/* skip this unused q_vector */
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
err = request_irq(adapter->msix_entries[vector].vector,
|
|
|
|
handler, 0, adapter->name[vector],
|
|
|
|
adapter->q_vector[vector]);
|
|
|
|
if (err) {
|
|
|
|
hw_dbg(&adapter->hw,
|
|
|
|
"request_irq failed for MSIX interrupt "
|
|
|
|
"Error: %d\n", err);
|
|
|
|
goto free_queue_irqs;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
sprintf(adapter->name[vector], "%s:mbx", netdev->name);
|
|
|
|
err = request_irq(adapter->msix_entries[vector].vector,
|
|
|
|
&ixgbevf_msix_mbx, 0, adapter->name[vector], netdev);
|
|
|
|
if (err) {
|
|
|
|
hw_dbg(&adapter->hw,
|
|
|
|
"request_irq for msix_mbx failed: %d\n", err);
|
|
|
|
goto free_queue_irqs;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
free_queue_irqs:
|
|
|
|
for (i = vector - 1; i >= 0; i--)
|
|
|
|
free_irq(adapter->msix_entries[--vector].vector,
|
|
|
|
&(adapter->q_vector[i]));
|
|
|
|
pci_disable_msix(adapter->pdev);
|
|
|
|
kfree(adapter->msix_entries);
|
|
|
|
adapter->msix_entries = NULL;
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
|
|
|
|
|
|
|
|
for (i = 0; i < q_vectors; i++) {
|
|
|
|
struct ixgbevf_q_vector *q_vector = adapter->q_vector[i];
|
|
|
|
bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
|
|
|
|
bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
|
|
|
|
q_vector->rxr_count = 0;
|
|
|
|
q_vector->txr_count = 0;
|
|
|
|
q_vector->eitr = adapter->eitr_param;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_request_irq - initialize interrupts
|
|
|
|
* @adapter: board private structure
|
|
|
|
*
|
|
|
|
* Attempts to configure interrupts using the best available
|
|
|
|
* capabilities of the hardware and kernel.
|
|
|
|
**/
|
|
|
|
static int ixgbevf_request_irq(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
err = ixgbevf_request_msix_irqs(adapter);
|
|
|
|
|
|
|
|
if (err)
|
|
|
|
hw_dbg(&adapter->hw,
|
|
|
|
"request_irq failed, Error %d\n", err);
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_free_irq(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
int i, q_vectors;
|
|
|
|
|
|
|
|
q_vectors = adapter->num_msix_vectors;
|
|
|
|
|
|
|
|
i = q_vectors - 1;
|
|
|
|
|
|
|
|
free_irq(adapter->msix_entries[i].vector, netdev);
|
|
|
|
i--;
|
|
|
|
|
|
|
|
for (; i >= 0; i--) {
|
|
|
|
free_irq(adapter->msix_entries[i].vector,
|
|
|
|
adapter->q_vector[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
ixgbevf_reset_q_vectors(adapter);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_irq_disable - Mask off interrupt generation on the NIC
|
|
|
|
* @adapter: board private structure
|
|
|
|
**/
|
|
|
|
static inline void ixgbevf_irq_disable(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, ~0);
|
|
|
|
|
|
|
|
IXGBE_WRITE_FLUSH(hw);
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_msix_vectors; i++)
|
|
|
|
synchronize_irq(adapter->msix_entries[i].vector);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_irq_enable - Enable default interrupt generation settings
|
|
|
|
* @adapter: board private structure
|
|
|
|
**/
|
|
|
|
static inline void ixgbevf_irq_enable(struct ixgbevf_adapter *adapter,
|
|
|
|
bool queues, bool flush)
|
|
|
|
{
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
u32 mask;
|
|
|
|
u64 qmask;
|
|
|
|
|
|
|
|
mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
|
|
|
|
qmask = ~0;
|
|
|
|
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
|
|
|
|
|
|
|
|
if (queues)
|
|
|
|
ixgbevf_irq_enable_queues(adapter, qmask);
|
|
|
|
|
|
|
|
if (flush)
|
|
|
|
IXGBE_WRITE_FLUSH(hw);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset
|
|
|
|
* @adapter: board private structure
|
|
|
|
*
|
|
|
|
* Configure the Tx unit of the MAC after a reset.
|
|
|
|
**/
|
|
|
|
static void ixgbevf_configure_tx(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
u64 tdba;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
u32 i, j, tdlen, txctrl;
|
|
|
|
|
|
|
|
/* Setup the HW Tx Head and Tail descriptor pointers */
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
|
|
struct ixgbevf_ring *ring = &adapter->tx_ring[i];
|
|
|
|
j = ring->reg_idx;
|
|
|
|
tdba = ring->dma;
|
|
|
|
tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(j),
|
|
|
|
(tdba & DMA_BIT_MASK(32)));
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(j), (tdba >> 32));
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(j), tdlen);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTDH(j), 0);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTDT(j), 0);
|
|
|
|
adapter->tx_ring[i].head = IXGBE_VFTDH(j);
|
|
|
|
adapter->tx_ring[i].tail = IXGBE_VFTDT(j);
|
|
|
|
/* Disable Tx Head Writeback RO bit, since this hoses
|
|
|
|
* bookkeeping if things aren't delivered in order.
|
|
|
|
*/
|
|
|
|
txctrl = IXGBE_READ_REG(hw, IXGBE_VFDCA_TXCTRL(j));
|
|
|
|
txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(j), txctrl);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
|
|
|
|
|
|
|
|
static void ixgbevf_configure_srrctl(struct ixgbevf_adapter *adapter, int index)
|
|
|
|
{
|
|
|
|
struct ixgbevf_ring *rx_ring;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
u32 srrctl;
|
|
|
|
|
|
|
|
rx_ring = &adapter->rx_ring[index];
|
|
|
|
|
|
|
|
srrctl = IXGBE_SRRCTL_DROP_EN;
|
|
|
|
|
|
|
|
if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
|
|
|
|
u16 bufsz = IXGBEVF_RXBUFFER_2048;
|
|
|
|
/* grow the amount we can receive on large page machines */
|
|
|
|
if (bufsz < (PAGE_SIZE / 2))
|
|
|
|
bufsz = (PAGE_SIZE / 2);
|
|
|
|
/* cap the bufsz at our largest descriptor size */
|
|
|
|
bufsz = min((u16)IXGBEVF_MAX_RXBUFFER, bufsz);
|
|
|
|
|
|
|
|
srrctl |= bufsz >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
|
|
|
|
srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
|
|
|
|
srrctl |= ((IXGBEVF_RX_HDR_SIZE <<
|
|
|
|
IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
|
|
|
|
IXGBE_SRRCTL_BSIZEHDR_MASK);
|
|
|
|
} else {
|
|
|
|
srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
|
|
|
|
|
|
|
|
if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE)
|
|
|
|
srrctl |= IXGBEVF_RXBUFFER_2048 >>
|
|
|
|
IXGBE_SRRCTL_BSIZEPKT_SHIFT;
|
|
|
|
else
|
|
|
|
srrctl |= rx_ring->rx_buf_len >>
|
|
|
|
IXGBE_SRRCTL_BSIZEPKT_SHIFT;
|
|
|
|
}
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(index), srrctl);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset
|
|
|
|
* @adapter: board private structure
|
|
|
|
*
|
|
|
|
* Configure the Rx unit of the MAC after a reset.
|
|
|
|
**/
|
|
|
|
static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
u64 rdba;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
|
|
int i, j;
|
|
|
|
u32 rdlen;
|
|
|
|
int rx_buf_len;
|
|
|
|
|
|
|
|
/* Decide whether to use packet split mode or not */
|
|
|
|
if (netdev->mtu > ETH_DATA_LEN) {
|
|
|
|
if (adapter->flags & IXGBE_FLAG_RX_PS_CAPABLE)
|
|
|
|
adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
|
|
|
|
else
|
|
|
|
adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
|
|
|
|
} else {
|
|
|
|
if (adapter->flags & IXGBE_FLAG_RX_1BUF_CAPABLE)
|
|
|
|
adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
|
|
|
|
else
|
|
|
|
adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Set the RX buffer length according to the mode */
|
|
|
|
if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
|
|
|
|
/* PSRTYPE must be initialized in 82599 */
|
|
|
|
u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
|
|
|
|
IXGBE_PSRTYPE_UDPHDR |
|
|
|
|
IXGBE_PSRTYPE_IPV4HDR |
|
|
|
|
IXGBE_PSRTYPE_IPV6HDR |
|
|
|
|
IXGBE_PSRTYPE_L2HDR;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype);
|
|
|
|
rx_buf_len = IXGBEVF_RX_HDR_SIZE;
|
|
|
|
} else {
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
|
|
|
|
if (netdev->mtu <= ETH_DATA_LEN)
|
|
|
|
rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
|
|
|
|
else
|
|
|
|
rx_buf_len = ALIGN(max_frame, 1024);
|
|
|
|
}
|
|
|
|
|
|
|
|
rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc);
|
|
|
|
/* Setup the HW Rx Head and Tail Descriptor Pointers and
|
|
|
|
* the Base and Length of the Rx Descriptor Ring */
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
|
|
rdba = adapter->rx_ring[i].dma;
|
|
|
|
j = adapter->rx_ring[i].reg_idx;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(j),
|
|
|
|
(rdba & DMA_BIT_MASK(32)));
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(j), (rdba >> 32));
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(j), rdlen);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFRDH(j), 0);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFRDT(j), 0);
|
|
|
|
adapter->rx_ring[i].head = IXGBE_VFRDH(j);
|
|
|
|
adapter->rx_ring[i].tail = IXGBE_VFRDT(j);
|
|
|
|
adapter->rx_ring[i].rx_buf_len = rx_buf_len;
|
|
|
|
|
|
|
|
ixgbevf_configure_srrctl(adapter, j);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_vlan_rx_register(struct net_device *netdev,
|
|
|
|
struct vlan_group *grp)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
int i, j;
|
|
|
|
u32 ctrl;
|
|
|
|
|
|
|
|
adapter->vlgrp = grp;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
|
|
j = adapter->rx_ring[i].reg_idx;
|
|
|
|
ctrl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j));
|
|
|
|
ctrl |= IXGBE_RXDCTL_VME;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), ctrl);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
struct net_device *v_netdev;
|
|
|
|
|
|
|
|
/* add VID to filter table */
|
|
|
|
if (hw->mac.ops.set_vfta)
|
|
|
|
hw->mac.ops.set_vfta(hw, vid, 0, true);
|
|
|
|
/*
|
|
|
|
* Copy feature flags from netdev to the vlan netdev for this vid.
|
|
|
|
* This allows things like TSO to bubble down to our vlan device.
|
|
|
|
*/
|
|
|
|
v_netdev = vlan_group_get_device(adapter->vlgrp, vid);
|
|
|
|
v_netdev->features |= adapter->netdev->features;
|
|
|
|
vlan_group_set_device(adapter->vlgrp, vid, v_netdev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
|
|
|
|
if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
|
|
|
|
ixgbevf_irq_disable(adapter);
|
|
|
|
|
|
|
|
vlan_group_set_device(adapter->vlgrp, vid, NULL);
|
|
|
|
|
|
|
|
if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
|
|
|
|
ixgbevf_irq_enable(adapter, true, true);
|
|
|
|
|
|
|
|
/* remove VID from filter table */
|
|
|
|
if (hw->mac.ops.set_vfta)
|
|
|
|
hw->mac.ops.set_vfta(hw, vid, 0, false);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_restore_vlan(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
ixgbevf_vlan_rx_register(adapter->netdev, adapter->vlgrp);
|
|
|
|
|
|
|
|
if (adapter->vlgrp) {
|
|
|
|
u16 vid;
|
|
|
|
for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
|
|
|
|
if (!vlan_group_get_device(adapter->vlgrp, vid))
|
|
|
|
continue;
|
|
|
|
ixgbevf_vlan_rx_add_vid(adapter->netdev, vid);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static u8 *ixgbevf_addr_list_itr(struct ixgbe_hw *hw, u8 **mc_addr_ptr,
|
|
|
|
u32 *vmdq)
|
|
|
|
{
|
|
|
|
struct dev_mc_list *mc_ptr;
|
|
|
|
u8 *addr = *mc_addr_ptr;
|
|
|
|
*vmdq = 0;
|
|
|
|
|
|
|
|
mc_ptr = container_of(addr, struct dev_mc_list, dmi_addr[0]);
|
|
|
|
if (mc_ptr->next)
|
|
|
|
*mc_addr_ptr = mc_ptr->next->dmi_addr;
|
|
|
|
else
|
|
|
|
*mc_addr_ptr = NULL;
|
|
|
|
|
|
|
|
return addr;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_set_rx_mode - Multicast set
|
|
|
|
* @netdev: network interface device structure
|
|
|
|
*
|
|
|
|
* The set_rx_method 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 mode.
|
|
|
|
**/
|
|
|
|
static void ixgbevf_set_rx_mode(struct net_device *netdev)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
u8 *addr_list = NULL;
|
|
|
|
int addr_count = 0;
|
|
|
|
|
|
|
|
/* reprogram multicast list */
|
2010-02-08 04:30:35 +00:00
|
|
|
addr_count = netdev_mc_count(netdev);
|
2010-01-09 02:24:10 +00:00
|
|
|
if (addr_count)
|
|
|
|
addr_list = netdev->mc_list->dmi_addr;
|
|
|
|
if (hw->mac.ops.update_mc_addr_list)
|
|
|
|
hw->mac.ops.update_mc_addr_list(hw, addr_list, addr_count,
|
|
|
|
ixgbevf_addr_list_itr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_napi_enable_all(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int q_idx;
|
|
|
|
struct ixgbevf_q_vector *q_vector;
|
|
|
|
int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
|
|
|
|
|
|
|
|
for (q_idx = 0; q_idx < q_vectors; q_idx++) {
|
|
|
|
struct napi_struct *napi;
|
|
|
|
q_vector = adapter->q_vector[q_idx];
|
|
|
|
if (!q_vector->rxr_count)
|
|
|
|
continue;
|
|
|
|
napi = &q_vector->napi;
|
|
|
|
if (q_vector->rxr_count > 1)
|
|
|
|
napi->poll = &ixgbevf_clean_rxonly_many;
|
|
|
|
|
|
|
|
napi_enable(napi);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_napi_disable_all(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int q_idx;
|
|
|
|
struct ixgbevf_q_vector *q_vector;
|
|
|
|
int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
|
|
|
|
|
|
|
|
for (q_idx = 0; q_idx < q_vectors; q_idx++) {
|
|
|
|
q_vector = adapter->q_vector[q_idx];
|
|
|
|
if (!q_vector->rxr_count)
|
|
|
|
continue;
|
|
|
|
napi_disable(&q_vector->napi);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_configure(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
ixgbevf_set_rx_mode(netdev);
|
|
|
|
|
|
|
|
ixgbevf_restore_vlan(adapter);
|
|
|
|
|
|
|
|
ixgbevf_configure_tx(adapter);
|
|
|
|
ixgbevf_configure_rx(adapter);
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
|
|
struct ixgbevf_ring *ring = &adapter->rx_ring[i];
|
|
|
|
ixgbevf_alloc_rx_buffers(adapter, ring, ring->count);
|
|
|
|
ring->next_to_use = ring->count - 1;
|
|
|
|
writel(ring->next_to_use, adapter->hw.hw_addr + ring->tail);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#define IXGBE_MAX_RX_DESC_POLL 10
|
|
|
|
static inline void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter *adapter,
|
|
|
|
int rxr)
|
|
|
|
{
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
int j = adapter->rx_ring[rxr].reg_idx;
|
|
|
|
int k;
|
|
|
|
|
|
|
|
for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) {
|
|
|
|
if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)) & IXGBE_RXDCTL_ENABLE)
|
|
|
|
break;
|
|
|
|
else
|
|
|
|
msleep(1);
|
|
|
|
}
|
|
|
|
if (k >= IXGBE_MAX_RX_DESC_POLL) {
|
|
|
|
hw_dbg(hw, "RXDCTL.ENABLE on Rx queue %d "
|
|
|
|
"not set within the polling period\n", rxr);
|
|
|
|
}
|
|
|
|
|
|
|
|
ixgbevf_release_rx_desc(&adapter->hw, &adapter->rx_ring[rxr],
|
|
|
|
(adapter->rx_ring[rxr].count - 1));
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ixgbevf_up_complete(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
int i, j = 0;
|
|
|
|
int num_rx_rings = adapter->num_rx_queues;
|
|
|
|
u32 txdctl, rxdctl;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
|
|
j = adapter->tx_ring[i].reg_idx;
|
|
|
|
txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
|
|
|
|
/* enable WTHRESH=8 descriptors, to encourage burst writeback */
|
|
|
|
txdctl |= (8 << 16);
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl);
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
|
|
j = adapter->tx_ring[i].reg_idx;
|
|
|
|
txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
|
|
|
|
txdctl |= IXGBE_TXDCTL_ENABLE;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl);
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < num_rx_rings; i++) {
|
|
|
|
j = adapter->rx_ring[i].reg_idx;
|
|
|
|
rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j));
|
|
|
|
rxdctl |= IXGBE_RXDCTL_ENABLE;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), rxdctl);
|
|
|
|
ixgbevf_rx_desc_queue_enable(adapter, i);
|
|
|
|
}
|
|
|
|
|
|
|
|
ixgbevf_configure_msix(adapter);
|
|
|
|
|
|
|
|
if (hw->mac.ops.set_rar) {
|
|
|
|
if (is_valid_ether_addr(hw->mac.addr))
|
|
|
|
hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0);
|
|
|
|
else
|
|
|
|
hw->mac.ops.set_rar(hw, 0, hw->mac.perm_addr, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
clear_bit(__IXGBEVF_DOWN, &adapter->state);
|
|
|
|
ixgbevf_napi_enable_all(adapter);
|
|
|
|
|
|
|
|
/* enable transmits */
|
|
|
|
netif_tx_start_all_queues(netdev);
|
|
|
|
|
|
|
|
/* bring the link up in the watchdog, this could race with our first
|
|
|
|
* link up interrupt but shouldn't be a problem */
|
|
|
|
adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
|
|
|
|
adapter->link_check_timeout = jiffies;
|
|
|
|
mod_timer(&adapter->watchdog_timer, jiffies);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ixgbevf_up(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
|
|
|
|
ixgbevf_configure(adapter);
|
|
|
|
|
|
|
|
err = ixgbevf_up_complete(adapter);
|
|
|
|
|
|
|
|
/* clear any pending interrupts, may auto mask */
|
|
|
|
IXGBE_READ_REG(hw, IXGBE_VTEICR);
|
|
|
|
|
|
|
|
ixgbevf_irq_enable(adapter, true, true);
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_clean_rx_ring - Free Rx Buffers per Queue
|
|
|
|
* @adapter: board private structure
|
|
|
|
* @rx_ring: ring to free buffers from
|
|
|
|
**/
|
|
|
|
static void ixgbevf_clean_rx_ring(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *rx_ring)
|
|
|
|
{
|
|
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
unsigned long size;
|
|
|
|
unsigned int i;
|
|
|
|
|
2010-01-22 22:47:18 +00:00
|
|
|
if (!rx_ring->rx_buffer_info)
|
|
|
|
return;
|
2010-01-09 02:24:10 +00:00
|
|
|
|
2010-01-22 22:47:18 +00:00
|
|
|
/* Free all the Rx ring sk_buffs */
|
2010-01-09 02:24:10 +00:00
|
|
|
for (i = 0; i < rx_ring->count; i++) {
|
|
|
|
struct ixgbevf_rx_buffer *rx_buffer_info;
|
|
|
|
|
|
|
|
rx_buffer_info = &rx_ring->rx_buffer_info[i];
|
|
|
|
if (rx_buffer_info->dma) {
|
|
|
|
pci_unmap_single(pdev, rx_buffer_info->dma,
|
|
|
|
rx_ring->rx_buf_len,
|
|
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
rx_buffer_info->dma = 0;
|
|
|
|
}
|
|
|
|
if (rx_buffer_info->skb) {
|
|
|
|
struct sk_buff *skb = rx_buffer_info->skb;
|
|
|
|
rx_buffer_info->skb = NULL;
|
|
|
|
do {
|
|
|
|
struct sk_buff *this = skb;
|
|
|
|
skb = skb->prev;
|
|
|
|
dev_kfree_skb(this);
|
|
|
|
} while (skb);
|
|
|
|
}
|
|
|
|
if (!rx_buffer_info->page)
|
|
|
|
continue;
|
|
|
|
pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE / 2,
|
|
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
rx_buffer_info->page_dma = 0;
|
|
|
|
put_page(rx_buffer_info->page);
|
|
|
|
rx_buffer_info->page = NULL;
|
|
|
|
rx_buffer_info->page_offset = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count;
|
|
|
|
memset(rx_ring->rx_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;
|
|
|
|
|
|
|
|
if (rx_ring->head)
|
|
|
|
writel(0, adapter->hw.hw_addr + rx_ring->head);
|
|
|
|
if (rx_ring->tail)
|
|
|
|
writel(0, adapter->hw.hw_addr + rx_ring->tail);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_clean_tx_ring - Free Tx Buffers
|
|
|
|
* @adapter: board private structure
|
|
|
|
* @tx_ring: ring to be cleaned
|
|
|
|
**/
|
|
|
|
static void ixgbevf_clean_tx_ring(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *tx_ring)
|
|
|
|
{
|
|
|
|
struct ixgbevf_tx_buffer *tx_buffer_info;
|
|
|
|
unsigned long size;
|
|
|
|
unsigned int i;
|
|
|
|
|
2010-01-22 22:47:18 +00:00
|
|
|
if (!tx_ring->tx_buffer_info)
|
|
|
|
return;
|
|
|
|
|
2010-01-09 02:24:10 +00:00
|
|
|
/* Free all the Tx ring sk_buffs */
|
|
|
|
|
|
|
|
for (i = 0; i < tx_ring->count; i++) {
|
|
|
|
tx_buffer_info = &tx_ring->tx_buffer_info[i];
|
|
|
|
ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info);
|
|
|
|
}
|
|
|
|
|
|
|
|
size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count;
|
|
|
|
memset(tx_ring->tx_buffer_info, 0, size);
|
|
|
|
|
|
|
|
memset(tx_ring->desc, 0, tx_ring->size);
|
|
|
|
|
|
|
|
tx_ring->next_to_use = 0;
|
|
|
|
tx_ring->next_to_clean = 0;
|
|
|
|
|
|
|
|
if (tx_ring->head)
|
|
|
|
writel(0, adapter->hw.hw_addr + tx_ring->head);
|
|
|
|
if (tx_ring->tail)
|
|
|
|
writel(0, adapter->hw.hw_addr + tx_ring->tail);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues
|
|
|
|
* @adapter: board private structure
|
|
|
|
**/
|
|
|
|
static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
|
|
ixgbevf_clean_rx_ring(adapter, &adapter->rx_ring[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues
|
|
|
|
* @adapter: board private structure
|
|
|
|
**/
|
|
|
|
static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
|
|
ixgbevf_clean_tx_ring(adapter, &adapter->tx_ring[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
void ixgbevf_down(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
u32 txdctl;
|
|
|
|
int i, j;
|
|
|
|
|
|
|
|
/* signal that we are down to the interrupt handler */
|
|
|
|
set_bit(__IXGBEVF_DOWN, &adapter->state);
|
|
|
|
/* disable receives */
|
|
|
|
|
|
|
|
netif_tx_disable(netdev);
|
|
|
|
|
|
|
|
msleep(10);
|
|
|
|
|
|
|
|
netif_tx_stop_all_queues(netdev);
|
|
|
|
|
|
|
|
ixgbevf_irq_disable(adapter);
|
|
|
|
|
|
|
|
ixgbevf_napi_disable_all(adapter);
|
|
|
|
|
|
|
|
del_timer_sync(&adapter->watchdog_timer);
|
|
|
|
/* can't call flush scheduled work here because it can deadlock
|
|
|
|
* if linkwatch_event tries to acquire the rtnl_lock which we are
|
|
|
|
* holding */
|
|
|
|
while (adapter->flags & IXGBE_FLAG_IN_WATCHDOG_TASK)
|
|
|
|
msleep(1);
|
|
|
|
|
|
|
|
/* disable transmits in the hardware now that interrupts are off */
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
|
|
j = adapter->tx_ring[i].reg_idx;
|
|
|
|
txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j),
|
|
|
|
(txdctl & ~IXGBE_TXDCTL_ENABLE));
|
|
|
|
}
|
|
|
|
|
|
|
|
netif_carrier_off(netdev);
|
|
|
|
|
|
|
|
if (!pci_channel_offline(adapter->pdev))
|
|
|
|
ixgbevf_reset(adapter);
|
|
|
|
|
|
|
|
ixgbevf_clean_all_tx_rings(adapter);
|
|
|
|
ixgbevf_clean_all_rx_rings(adapter);
|
|
|
|
}
|
|
|
|
|
|
|
|
void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
2010-01-22 22:47:18 +00:00
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
|
2010-01-09 02:24:10 +00:00
|
|
|
WARN_ON(in_interrupt());
|
2010-01-22 22:47:18 +00:00
|
|
|
|
2010-01-09 02:24:10 +00:00
|
|
|
while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
|
|
|
|
msleep(1);
|
|
|
|
|
2010-01-22 22:47:18 +00:00
|
|
|
/*
|
|
|
|
* Check if PF is up before re-init. If not then skip until
|
|
|
|
* later when the PF is up and ready to service requests from
|
|
|
|
* the VF via mailbox. If the VF is up and running then the
|
|
|
|
* watchdog task will continue to schedule reset tasks until
|
|
|
|
* the PF is up and running.
|
|
|
|
*/
|
|
|
|
if (!hw->mac.ops.reset_hw(hw)) {
|
|
|
|
ixgbevf_down(adapter);
|
|
|
|
ixgbevf_up(adapter);
|
|
|
|
}
|
2010-01-09 02:24:10 +00:00
|
|
|
|
|
|
|
clear_bit(__IXGBEVF_RESETTING, &adapter->state);
|
|
|
|
}
|
|
|
|
|
|
|
|
void ixgbevf_reset(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
|
|
|
|
if (hw->mac.ops.reset_hw(hw))
|
|
|
|
hw_dbg(hw, "PF still resetting\n");
|
|
|
|
else
|
|
|
|
hw->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);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter *adapter,
|
|
|
|
int vectors)
|
|
|
|
{
|
|
|
|
int err, vector_threshold;
|
|
|
|
|
|
|
|
/* We'll want at least 3 (vector_threshold):
|
|
|
|
* 1) TxQ[0] Cleanup
|
|
|
|
* 2) RxQ[0] Cleanup
|
|
|
|
* 3) Other (Link Status Change, etc.)
|
|
|
|
*/
|
|
|
|
vector_threshold = MIN_MSIX_COUNT;
|
|
|
|
|
|
|
|
/* The more we get, the more we will assign to Tx/Rx Cleanup
|
|
|
|
* for the separate queues...where Rx Cleanup >= Tx Cleanup.
|
|
|
|
* Right now, we simply care about how many we'll get; we'll
|
|
|
|
* set them up later while requesting irq's.
|
|
|
|
*/
|
|
|
|
while (vectors >= vector_threshold) {
|
|
|
|
err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
|
|
|
|
vectors);
|
|
|
|
if (!err) /* Success in acquiring all requested vectors. */
|
|
|
|
break;
|
|
|
|
else if (err < 0)
|
|
|
|
vectors = 0; /* Nasty failure, quit now */
|
|
|
|
else /* err == number of vectors we should try again with */
|
|
|
|
vectors = err;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (vectors < vector_threshold) {
|
|
|
|
/* Can't allocate enough MSI-X interrupts? Oh well.
|
|
|
|
* This just means we'll go with either a single MSI
|
|
|
|
* vector or fall back to legacy interrupts.
|
|
|
|
*/
|
|
|
|
hw_dbg(&adapter->hw,
|
|
|
|
"Unable to allocate MSI-X interrupts\n");
|
|
|
|
kfree(adapter->msix_entries);
|
|
|
|
adapter->msix_entries = NULL;
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* Adjust for only the vectors we'll use, which is minimum
|
|
|
|
* of max_msix_q_vectors + NON_Q_VECTORS, or the number of
|
|
|
|
* vectors we were allocated.
|
|
|
|
*/
|
|
|
|
adapter->num_msix_vectors = vectors;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ixgbe_set_num_queues: Allocate queues for device, feature dependant
|
|
|
|
* @adapter: board private structure to initialize
|
|
|
|
*
|
|
|
|
* This is the top level queue allocation routine. The order here is very
|
|
|
|
* important, starting with the "most" number of features turned on at once,
|
|
|
|
* and ending with the smallest set of features. This way large combinations
|
|
|
|
* can be allocated if they're turned on, and smaller combinations are the
|
|
|
|
* fallthrough conditions.
|
|
|
|
*
|
|
|
|
**/
|
|
|
|
static void ixgbevf_set_num_queues(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
/* Start with base case */
|
|
|
|
adapter->num_rx_queues = 1;
|
|
|
|
adapter->num_tx_queues = 1;
|
|
|
|
adapter->num_rx_pools = adapter->num_rx_queues;
|
|
|
|
adapter->num_rx_queues_per_pool = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_alloc_queues - Allocate memory for all rings
|
|
|
|
* @adapter: board private structure to initialize
|
|
|
|
*
|
|
|
|
* We allocate one ring per queue at run-time since we don't know the
|
|
|
|
* number of queues at compile-time. The polling_netdev array is
|
|
|
|
* intended for Multiqueue, but should work fine with a single queue.
|
|
|
|
**/
|
|
|
|
static int ixgbevf_alloc_queues(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
adapter->tx_ring = kcalloc(adapter->num_tx_queues,
|
|
|
|
sizeof(struct ixgbevf_ring), GFP_KERNEL);
|
|
|
|
if (!adapter->tx_ring)
|
|
|
|
goto err_tx_ring_allocation;
|
|
|
|
|
|
|
|
adapter->rx_ring = kcalloc(adapter->num_rx_queues,
|
|
|
|
sizeof(struct ixgbevf_ring), GFP_KERNEL);
|
|
|
|
if (!adapter->rx_ring)
|
|
|
|
goto err_rx_ring_allocation;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
|
|
adapter->tx_ring[i].count = adapter->tx_ring_count;
|
|
|
|
adapter->tx_ring[i].queue_index = i;
|
|
|
|
adapter->tx_ring[i].reg_idx = i;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
|
|
adapter->rx_ring[i].count = adapter->rx_ring_count;
|
|
|
|
adapter->rx_ring[i].queue_index = i;
|
|
|
|
adapter->rx_ring[i].reg_idx = i;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_rx_ring_allocation:
|
|
|
|
kfree(adapter->tx_ring);
|
|
|
|
err_tx_ring_allocation:
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported
|
|
|
|
* @adapter: board private structure to initialize
|
|
|
|
*
|
|
|
|
* Attempt to configure the interrupts using the best available
|
|
|
|
* capabilities of the hardware and the kernel.
|
|
|
|
**/
|
|
|
|
static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int err = 0;
|
|
|
|
int vector, v_budget;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* It's easy to be greedy for MSI-X vectors, but it really
|
|
|
|
* doesn't do us much good if we have a lot more vectors
|
|
|
|
* than CPU's. So let's be conservative and only ask for
|
|
|
|
* (roughly) twice the number of vectors as there are CPU's.
|
|
|
|
*/
|
|
|
|
v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
|
|
|
|
(int)(num_online_cpus() * 2)) + NON_Q_VECTORS;
|
|
|
|
|
|
|
|
/* A failure in MSI-X entry allocation isn't fatal, but it does
|
|
|
|
* mean we disable MSI-X capabilities of the adapter. */
|
|
|
|
adapter->msix_entries = kcalloc(v_budget,
|
|
|
|
sizeof(struct msix_entry), GFP_KERNEL);
|
|
|
|
if (!adapter->msix_entries) {
|
|
|
|
err = -ENOMEM;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (vector = 0; vector < v_budget; vector++)
|
|
|
|
adapter->msix_entries[vector].entry = vector;
|
|
|
|
|
|
|
|
ixgbevf_acquire_msix_vectors(adapter, v_budget);
|
|
|
|
|
|
|
|
out:
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors
|
|
|
|
* @adapter: board private structure to initialize
|
|
|
|
*
|
|
|
|
* We allocate one q_vector per queue interrupt. If allocation fails we
|
|
|
|
* return -ENOMEM.
|
|
|
|
**/
|
|
|
|
static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int q_idx, num_q_vectors;
|
|
|
|
struct ixgbevf_q_vector *q_vector;
|
|
|
|
int napi_vectors;
|
|
|
|
int (*poll)(struct napi_struct *, int);
|
|
|
|
|
|
|
|
num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
|
|
|
|
napi_vectors = adapter->num_rx_queues;
|
|
|
|
poll = &ixgbevf_clean_rxonly;
|
|
|
|
|
|
|
|
for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
|
|
|
|
q_vector = kzalloc(sizeof(struct ixgbevf_q_vector), GFP_KERNEL);
|
|
|
|
if (!q_vector)
|
|
|
|
goto err_out;
|
|
|
|
q_vector->adapter = adapter;
|
|
|
|
q_vector->v_idx = q_idx;
|
|
|
|
q_vector->eitr = adapter->eitr_param;
|
|
|
|
if (q_idx < napi_vectors)
|
|
|
|
netif_napi_add(adapter->netdev, &q_vector->napi,
|
|
|
|
(*poll), 64);
|
|
|
|
adapter->q_vector[q_idx] = q_vector;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_out:
|
|
|
|
while (q_idx) {
|
|
|
|
q_idx--;
|
|
|
|
q_vector = adapter->q_vector[q_idx];
|
|
|
|
netif_napi_del(&q_vector->napi);
|
|
|
|
kfree(q_vector);
|
|
|
|
adapter->q_vector[q_idx] = NULL;
|
|
|
|
}
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors
|
|
|
|
* @adapter: board private structure to initialize
|
|
|
|
*
|
|
|
|
* This function frees the memory allocated to the q_vectors. In addition if
|
|
|
|
* NAPI is enabled it will delete any references to the NAPI struct prior
|
|
|
|
* to freeing the q_vector.
|
|
|
|
**/
|
|
|
|
static void ixgbevf_free_q_vectors(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int q_idx, num_q_vectors;
|
|
|
|
int napi_vectors;
|
|
|
|
|
|
|
|
num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
|
|
|
|
napi_vectors = adapter->num_rx_queues;
|
|
|
|
|
|
|
|
for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
|
|
|
|
struct ixgbevf_q_vector *q_vector = adapter->q_vector[q_idx];
|
|
|
|
|
|
|
|
adapter->q_vector[q_idx] = NULL;
|
|
|
|
if (q_idx < napi_vectors)
|
|
|
|
netif_napi_del(&q_vector->napi);
|
|
|
|
kfree(q_vector);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_reset_interrupt_capability - Reset MSIX setup
|
|
|
|
* @adapter: board private structure
|
|
|
|
*
|
|
|
|
**/
|
|
|
|
static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
pci_disable_msix(adapter->pdev);
|
|
|
|
kfree(adapter->msix_entries);
|
|
|
|
adapter->msix_entries = NULL;
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init
|
|
|
|
* @adapter: board private structure to initialize
|
|
|
|
*
|
|
|
|
**/
|
|
|
|
static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
/* Number of supported queues */
|
|
|
|
ixgbevf_set_num_queues(adapter);
|
|
|
|
|
|
|
|
err = ixgbevf_set_interrupt_capability(adapter);
|
|
|
|
if (err) {
|
|
|
|
hw_dbg(&adapter->hw,
|
|
|
|
"Unable to setup interrupt capabilities\n");
|
|
|
|
goto err_set_interrupt;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = ixgbevf_alloc_q_vectors(adapter);
|
|
|
|
if (err) {
|
|
|
|
hw_dbg(&adapter->hw, "Unable to allocate memory for queue "
|
|
|
|
"vectors\n");
|
|
|
|
goto err_alloc_q_vectors;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = ixgbevf_alloc_queues(adapter);
|
|
|
|
if (err) {
|
|
|
|
printk(KERN_ERR "Unable to allocate memory for queues\n");
|
|
|
|
goto err_alloc_queues;
|
|
|
|
}
|
|
|
|
|
|
|
|
hw_dbg(&adapter->hw, "Multiqueue %s: Rx Queue count = %u, "
|
|
|
|
"Tx Queue count = %u\n",
|
|
|
|
(adapter->num_rx_queues > 1) ? "Enabled" :
|
|
|
|
"Disabled", adapter->num_rx_queues, adapter->num_tx_queues);
|
|
|
|
|
|
|
|
set_bit(__IXGBEVF_DOWN, &adapter->state);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
err_alloc_queues:
|
|
|
|
ixgbevf_free_q_vectors(adapter);
|
|
|
|
err_alloc_q_vectors:
|
|
|
|
ixgbevf_reset_interrupt_capability(adapter);
|
|
|
|
err_set_interrupt:
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_sw_init - Initialize general software structures
|
|
|
|
* (struct ixgbevf_adapter)
|
|
|
|
* @adapter: board private structure to initialize
|
|
|
|
*
|
|
|
|
* ixgbevf_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 ixgbevf_sw_init(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
/* PCI config space info */
|
|
|
|
|
|
|
|
hw->vendor_id = pdev->vendor;
|
|
|
|
hw->device_id = pdev->device;
|
|
|
|
pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
|
|
|
|
hw->subsystem_vendor_id = pdev->subsystem_vendor;
|
|
|
|
hw->subsystem_device_id = pdev->subsystem_device;
|
|
|
|
|
|
|
|
hw->mbx.ops.init_params(hw);
|
|
|
|
hw->mac.max_tx_queues = MAX_TX_QUEUES;
|
|
|
|
hw->mac.max_rx_queues = MAX_RX_QUEUES;
|
|
|
|
err = hw->mac.ops.reset_hw(hw);
|
|
|
|
if (err) {
|
|
|
|
dev_info(&pdev->dev,
|
|
|
|
"PF still in reset state, assigning new address\n");
|
|
|
|
random_ether_addr(hw->mac.addr);
|
|
|
|
} else {
|
|
|
|
err = hw->mac.ops.init_hw(hw);
|
|
|
|
if (err) {
|
|
|
|
printk(KERN_ERR "init_shared_code failed: %d\n", err);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Enable dynamic interrupt throttling rates */
|
|
|
|
adapter->eitr_param = 20000;
|
|
|
|
adapter->itr_setting = 1;
|
|
|
|
|
|
|
|
/* set defaults for eitr in MegaBytes */
|
|
|
|
adapter->eitr_low = 10;
|
|
|
|
adapter->eitr_high = 20;
|
|
|
|
|
|
|
|
/* set default ring sizes */
|
|
|
|
adapter->tx_ring_count = IXGBEVF_DEFAULT_TXD;
|
|
|
|
adapter->rx_ring_count = IXGBEVF_DEFAULT_RXD;
|
|
|
|
|
|
|
|
/* enable rx csum by default */
|
|
|
|
adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
|
|
|
|
|
|
|
|
set_bit(__IXGBEVF_DOWN, &adapter->state);
|
|
|
|
|
|
|
|
out:
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
|
|
|
|
adapter->stats.last_vfgprc = IXGBE_READ_REG(hw, IXGBE_VFGPRC);
|
|
|
|
adapter->stats.last_vfgorc = IXGBE_READ_REG(hw, IXGBE_VFGORC_LSB);
|
|
|
|
adapter->stats.last_vfgorc |=
|
|
|
|
(((u64)(IXGBE_READ_REG(hw, IXGBE_VFGORC_MSB))) << 32);
|
|
|
|
adapter->stats.last_vfgptc = IXGBE_READ_REG(hw, IXGBE_VFGPTC);
|
|
|
|
adapter->stats.last_vfgotc = IXGBE_READ_REG(hw, IXGBE_VFGOTC_LSB);
|
|
|
|
adapter->stats.last_vfgotc |=
|
|
|
|
(((u64)(IXGBE_READ_REG(hw, IXGBE_VFGOTC_MSB))) << 32);
|
|
|
|
adapter->stats.last_vfmprc = IXGBE_READ_REG(hw, IXGBE_VFMPRC);
|
|
|
|
|
|
|
|
adapter->stats.base_vfgprc = adapter->stats.last_vfgprc;
|
|
|
|
adapter->stats.base_vfgorc = adapter->stats.last_vfgorc;
|
|
|
|
adapter->stats.base_vfgptc = adapter->stats.last_vfgptc;
|
|
|
|
adapter->stats.base_vfgotc = adapter->stats.last_vfgotc;
|
|
|
|
adapter->stats.base_vfmprc = adapter->stats.last_vfmprc;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \
|
|
|
|
{ \
|
|
|
|
u32 current_counter = IXGBE_READ_REG(hw, reg); \
|
|
|
|
if (current_counter < last_counter) \
|
|
|
|
counter += 0x100000000LL; \
|
|
|
|
last_counter = current_counter; \
|
|
|
|
counter &= 0xFFFFFFFF00000000LL; \
|
|
|
|
counter |= current_counter; \
|
|
|
|
}
|
|
|
|
|
|
|
|
#define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \
|
|
|
|
{ \
|
|
|
|
u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \
|
|
|
|
u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \
|
|
|
|
u64 current_counter = (current_counter_msb << 32) | \
|
|
|
|
current_counter_lsb; \
|
|
|
|
if (current_counter < last_counter) \
|
|
|
|
counter += 0x1000000000LL; \
|
|
|
|
last_counter = current_counter; \
|
|
|
|
counter &= 0xFFFFFFF000000000LL; \
|
|
|
|
counter |= current_counter; \
|
|
|
|
}
|
|
|
|
/**
|
|
|
|
* ixgbevf_update_stats - Update the board statistics counters.
|
|
|
|
* @adapter: board private structure
|
|
|
|
**/
|
|
|
|
void ixgbevf_update_stats(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
|
|
|
|
UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC, adapter->stats.last_vfgprc,
|
|
|
|
adapter->stats.vfgprc);
|
|
|
|
UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC, adapter->stats.last_vfgptc,
|
|
|
|
adapter->stats.vfgptc);
|
|
|
|
UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB, IXGBE_VFGORC_MSB,
|
|
|
|
adapter->stats.last_vfgorc,
|
|
|
|
adapter->stats.vfgorc);
|
|
|
|
UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB, IXGBE_VFGOTC_MSB,
|
|
|
|
adapter->stats.last_vfgotc,
|
|
|
|
adapter->stats.vfgotc);
|
|
|
|
UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC, adapter->stats.last_vfmprc,
|
|
|
|
adapter->stats.vfmprc);
|
|
|
|
|
|
|
|
/* Fill out the OS statistics structure */
|
|
|
|
adapter->net_stats.multicast = adapter->stats.vfmprc -
|
|
|
|
adapter->stats.base_vfmprc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_watchdog - Timer Call-back
|
|
|
|
* @data: pointer to adapter cast into an unsigned long
|
|
|
|
**/
|
|
|
|
static void ixgbevf_watchdog(unsigned long data)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = (struct ixgbevf_adapter *)data;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
u64 eics = 0;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Do the watchdog outside of interrupt context due to the lovely
|
|
|
|
* delays that some of the newer hardware requires
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (test_bit(__IXGBEVF_DOWN, &adapter->state))
|
|
|
|
goto watchdog_short_circuit;
|
|
|
|
|
|
|
|
/* get one bit for every active tx/rx interrupt vector */
|
|
|
|
for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
|
|
|
|
struct ixgbevf_q_vector *qv = adapter->q_vector[i];
|
|
|
|
if (qv->rxr_count || qv->txr_count)
|
|
|
|
eics |= (1 << i);
|
|
|
|
}
|
|
|
|
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_VTEICS, (u32)eics);
|
|
|
|
|
|
|
|
watchdog_short_circuit:
|
|
|
|
schedule_work(&adapter->watchdog_task);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_tx_timeout - Respond to a Tx Hang
|
|
|
|
* @netdev: network interface device structure
|
|
|
|
**/
|
|
|
|
static void ixgbevf_tx_timeout(struct net_device *netdev)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
|
|
|
|
/* Do the reset outside of interrupt context */
|
|
|
|
schedule_work(&adapter->reset_task);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_reset_task(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter;
|
|
|
|
adapter = container_of(work, struct ixgbevf_adapter, reset_task);
|
|
|
|
|
|
|
|
/* If we're already down or resetting, just bail */
|
|
|
|
if (test_bit(__IXGBEVF_DOWN, &adapter->state) ||
|
|
|
|
test_bit(__IXGBEVF_RESETTING, &adapter->state))
|
|
|
|
return;
|
|
|
|
|
|
|
|
adapter->tx_timeout_count++;
|
|
|
|
|
|
|
|
ixgbevf_reinit_locked(adapter);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_watchdog_task - worker thread to bring link up
|
|
|
|
* @work: pointer to work_struct containing our data
|
|
|
|
**/
|
|
|
|
static void ixgbevf_watchdog_task(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = container_of(work,
|
|
|
|
struct ixgbevf_adapter,
|
|
|
|
watchdog_task);
|
|
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
u32 link_speed = adapter->link_speed;
|
|
|
|
bool link_up = adapter->link_up;
|
|
|
|
|
|
|
|
adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Always check the link on the watchdog because we have
|
|
|
|
* no LSC interrupt
|
|
|
|
*/
|
|
|
|
if (hw->mac.ops.check_link) {
|
|
|
|
if ((hw->mac.ops.check_link(hw, &link_speed,
|
|
|
|
&link_up, false)) != 0) {
|
|
|
|
adapter->link_up = link_up;
|
|
|
|
adapter->link_speed = link_speed;
|
2010-01-22 22:47:37 +00:00
|
|
|
netif_carrier_off(netdev);
|
|
|
|
netif_tx_stop_all_queues(netdev);
|
2010-01-09 02:24:10 +00:00
|
|
|
schedule_work(&adapter->reset_task);
|
|
|
|
goto pf_has_reset;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* always assume link is up, if no check link
|
|
|
|
* function */
|
|
|
|
link_speed = IXGBE_LINK_SPEED_10GB_FULL;
|
|
|
|
link_up = true;
|
|
|
|
}
|
|
|
|
adapter->link_up = link_up;
|
|
|
|
adapter->link_speed = link_speed;
|
|
|
|
|
|
|
|
if (link_up) {
|
|
|
|
if (!netif_carrier_ok(netdev)) {
|
|
|
|
hw_dbg(&adapter->hw, "NIC Link is Up %s, ",
|
|
|
|
((link_speed == IXGBE_LINK_SPEED_10GB_FULL) ?
|
|
|
|
"10 Gbps" : "1 Gbps"));
|
|
|
|
netif_carrier_on(netdev);
|
|
|
|
netif_tx_wake_all_queues(netdev);
|
|
|
|
} else {
|
|
|
|
/* Force detection of hung controller */
|
|
|
|
adapter->detect_tx_hung = true;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
adapter->link_up = false;
|
|
|
|
adapter->link_speed = 0;
|
|
|
|
if (netif_carrier_ok(netdev)) {
|
|
|
|
hw_dbg(&adapter->hw, "NIC Link is Down\n");
|
|
|
|
netif_carrier_off(netdev);
|
|
|
|
netif_tx_stop_all_queues(netdev);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
pf_has_reset:
|
|
|
|
ixgbevf_update_stats(adapter);
|
|
|
|
|
|
|
|
/* Force detection of hung controller every watchdog period */
|
|
|
|
adapter->detect_tx_hung = true;
|
|
|
|
|
|
|
|
/* Reset the timer */
|
|
|
|
if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
|
|
|
|
mod_timer(&adapter->watchdog_timer,
|
|
|
|
round_jiffies(jiffies + (2 * HZ)));
|
|
|
|
|
|
|
|
adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_free_tx_resources - Free Tx Resources per Queue
|
|
|
|
* @adapter: board private structure
|
|
|
|
* @tx_ring: Tx descriptor ring for a specific queue
|
|
|
|
*
|
|
|
|
* Free all transmit software resources
|
|
|
|
**/
|
|
|
|
void ixgbevf_free_tx_resources(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *tx_ring)
|
|
|
|
{
|
|
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
|
|
|
|
ixgbevf_clean_tx_ring(adapter, tx_ring);
|
|
|
|
|
|
|
|
vfree(tx_ring->tx_buffer_info);
|
|
|
|
tx_ring->tx_buffer_info = NULL;
|
|
|
|
|
|
|
|
pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
|
|
|
|
|
|
|
|
tx_ring->desc = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues
|
|
|
|
* @adapter: board private structure
|
|
|
|
*
|
|
|
|
* Free all transmit software resources
|
|
|
|
**/
|
|
|
|
static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
|
|
if (adapter->tx_ring[i].desc)
|
|
|
|
ixgbevf_free_tx_resources(adapter,
|
|
|
|
&adapter->tx_ring[i]);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors)
|
|
|
|
* @adapter: board private structure
|
|
|
|
* @tx_ring: tx descriptor ring (for a specific queue) to setup
|
|
|
|
*
|
|
|
|
* Return 0 on success, negative on failure
|
|
|
|
**/
|
|
|
|
int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *tx_ring)
|
|
|
|
{
|
|
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
int size;
|
|
|
|
|
|
|
|
size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count;
|
|
|
|
tx_ring->tx_buffer_info = vmalloc(size);
|
|
|
|
if (!tx_ring->tx_buffer_info)
|
|
|
|
goto err;
|
|
|
|
memset(tx_ring->tx_buffer_info, 0, size);
|
|
|
|
|
|
|
|
/* round up to nearest 4K */
|
|
|
|
tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
|
|
|
|
tx_ring->size = ALIGN(tx_ring->size, 4096);
|
|
|
|
|
|
|
|
tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
|
|
|
|
&tx_ring->dma);
|
|
|
|
if (!tx_ring->desc)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
tx_ring->next_to_use = 0;
|
|
|
|
tx_ring->next_to_clean = 0;
|
|
|
|
tx_ring->work_limit = tx_ring->count;
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err:
|
|
|
|
vfree(tx_ring->tx_buffer_info);
|
|
|
|
tx_ring->tx_buffer_info = NULL;
|
|
|
|
hw_dbg(&adapter->hw, "Unable to allocate memory for the transmit "
|
|
|
|
"descriptor ring\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_setup_all_tx_resources - allocate all queues Tx resources
|
|
|
|
* @adapter: board private structure
|
|
|
|
*
|
|
|
|
* If this function returns with an error, then it's possible one or
|
|
|
|
* more of the rings is populated (while the rest are not). It is the
|
|
|
|
* callers duty to clean those orphaned rings.
|
|
|
|
*
|
|
|
|
* Return 0 on success, negative on failure
|
|
|
|
**/
|
|
|
|
static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i, err = 0;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
|
|
err = ixgbevf_setup_tx_resources(adapter, &adapter->tx_ring[i]);
|
|
|
|
if (!err)
|
|
|
|
continue;
|
|
|
|
hw_dbg(&adapter->hw,
|
|
|
|
"Allocation for Tx Queue %u failed\n", i);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors)
|
|
|
|
* @adapter: board private structure
|
|
|
|
* @rx_ring: rx descriptor ring (for a specific queue) to setup
|
|
|
|
*
|
|
|
|
* Returns 0 on success, negative on failure
|
|
|
|
**/
|
|
|
|
int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *rx_ring)
|
|
|
|
{
|
|
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
int size;
|
|
|
|
|
|
|
|
size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count;
|
|
|
|
rx_ring->rx_buffer_info = vmalloc(size);
|
|
|
|
if (!rx_ring->rx_buffer_info) {
|
|
|
|
hw_dbg(&adapter->hw,
|
|
|
|
"Unable to vmalloc buffer memory for "
|
|
|
|
"the receive descriptor ring\n");
|
|
|
|
goto alloc_failed;
|
|
|
|
}
|
|
|
|
memset(rx_ring->rx_buffer_info, 0, size);
|
|
|
|
|
|
|
|
/* Round up to nearest 4K */
|
|
|
|
rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
|
|
|
|
rx_ring->size = ALIGN(rx_ring->size, 4096);
|
|
|
|
|
|
|
|
rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size,
|
|
|
|
&rx_ring->dma);
|
|
|
|
|
|
|
|
if (!rx_ring->desc) {
|
|
|
|
hw_dbg(&adapter->hw,
|
|
|
|
"Unable to allocate memory for "
|
|
|
|
"the receive descriptor ring\n");
|
|
|
|
vfree(rx_ring->rx_buffer_info);
|
|
|
|
rx_ring->rx_buffer_info = NULL;
|
|
|
|
goto alloc_failed;
|
|
|
|
}
|
|
|
|
|
|
|
|
rx_ring->next_to_clean = 0;
|
|
|
|
rx_ring->next_to_use = 0;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
alloc_failed:
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_setup_all_rx_resources - allocate all queues Rx resources
|
|
|
|
* @adapter: board private structure
|
|
|
|
*
|
|
|
|
* If this function returns with an error, then it's possible one or
|
|
|
|
* more of the rings is populated (while the rest are not). It is the
|
|
|
|
* callers duty to clean those orphaned rings.
|
|
|
|
*
|
|
|
|
* Return 0 on success, negative on failure
|
|
|
|
**/
|
|
|
|
static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i, err = 0;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
|
|
err = ixgbevf_setup_rx_resources(adapter, &adapter->rx_ring[i]);
|
|
|
|
if (!err)
|
|
|
|
continue;
|
|
|
|
hw_dbg(&adapter->hw,
|
|
|
|
"Allocation for Rx Queue %u failed\n", i);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_free_rx_resources - Free Rx Resources
|
|
|
|
* @adapter: board private structure
|
|
|
|
* @rx_ring: ring to clean the resources from
|
|
|
|
*
|
|
|
|
* Free all receive software resources
|
|
|
|
**/
|
|
|
|
void ixgbevf_free_rx_resources(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *rx_ring)
|
|
|
|
{
|
|
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
|
|
|
|
ixgbevf_clean_rx_ring(adapter, rx_ring);
|
|
|
|
|
|
|
|
vfree(rx_ring->rx_buffer_info);
|
|
|
|
rx_ring->rx_buffer_info = NULL;
|
|
|
|
|
|
|
|
pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
|
|
|
|
|
|
|
|
rx_ring->desc = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues
|
|
|
|
* @adapter: board private structure
|
|
|
|
*
|
|
|
|
* Free all receive software resources
|
|
|
|
**/
|
|
|
|
static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
|
|
if (adapter->rx_ring[i].desc)
|
|
|
|
ixgbevf_free_rx_resources(adapter,
|
|
|
|
&adapter->rx_ring[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_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 ixgbevf_open(struct net_device *netdev)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
/* disallow open during test */
|
|
|
|
if (test_bit(__IXGBEVF_TESTING, &adapter->state))
|
|
|
|
return -EBUSY;
|
|
|
|
|
|
|
|
if (hw->adapter_stopped) {
|
|
|
|
ixgbevf_reset(adapter);
|
|
|
|
/* if adapter is still stopped then PF isn't up and
|
|
|
|
* the vf can't start. */
|
|
|
|
if (hw->adapter_stopped) {
|
|
|
|
err = IXGBE_ERR_MBX;
|
|
|
|
printk(KERN_ERR "Unable to start - perhaps the PF"
|
|
|
|
"Driver isn't up yet\n");
|
|
|
|
goto err_setup_reset;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* allocate transmit descriptors */
|
|
|
|
err = ixgbevf_setup_all_tx_resources(adapter);
|
|
|
|
if (err)
|
|
|
|
goto err_setup_tx;
|
|
|
|
|
|
|
|
/* allocate receive descriptors */
|
|
|
|
err = ixgbevf_setup_all_rx_resources(adapter);
|
|
|
|
if (err)
|
|
|
|
goto err_setup_rx;
|
|
|
|
|
|
|
|
ixgbevf_configure(adapter);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Map the Tx/Rx rings to the vectors we were allotted.
|
|
|
|
* if request_irq will be called in this function map_rings
|
|
|
|
* must be called *before* up_complete
|
|
|
|
*/
|
|
|
|
ixgbevf_map_rings_to_vectors(adapter);
|
|
|
|
|
|
|
|
err = ixgbevf_up_complete(adapter);
|
|
|
|
if (err)
|
|
|
|
goto err_up;
|
|
|
|
|
|
|
|
/* clear any pending interrupts, may auto mask */
|
|
|
|
IXGBE_READ_REG(hw, IXGBE_VTEICR);
|
|
|
|
err = ixgbevf_request_irq(adapter);
|
|
|
|
if (err)
|
|
|
|
goto err_req_irq;
|
|
|
|
|
|
|
|
ixgbevf_irq_enable(adapter, true, true);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_req_irq:
|
|
|
|
ixgbevf_down(adapter);
|
|
|
|
err_up:
|
|
|
|
ixgbevf_free_irq(adapter);
|
|
|
|
err_setup_rx:
|
|
|
|
ixgbevf_free_all_rx_resources(adapter);
|
|
|
|
err_setup_tx:
|
|
|
|
ixgbevf_free_all_tx_resources(adapter);
|
|
|
|
ixgbevf_reset(adapter);
|
|
|
|
|
|
|
|
err_setup_reset:
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_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 ixgbevf_close(struct net_device *netdev)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
|
|
|
|
ixgbevf_down(adapter);
|
|
|
|
ixgbevf_free_irq(adapter);
|
|
|
|
|
|
|
|
ixgbevf_free_all_tx_resources(adapter);
|
|
|
|
ixgbevf_free_all_rx_resources(adapter);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ixgbevf_tso(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *tx_ring,
|
|
|
|
struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
|
|
|
|
{
|
|
|
|
struct ixgbe_adv_tx_context_desc *context_desc;
|
|
|
|
unsigned int i;
|
|
|
|
int err;
|
|
|
|
struct ixgbevf_tx_buffer *tx_buffer_info;
|
|
|
|
u32 vlan_macip_lens = 0, type_tucmd_mlhl;
|
|
|
|
u32 mss_l4len_idx, l4len;
|
|
|
|
|
|
|
|
if (skb_is_gso(skb)) {
|
|
|
|
if (skb_header_cloned(skb)) {
|
|
|
|
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
|
|
|
|
if (err)
|
|
|
|
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);
|
|
|
|
adapter->hw_tso_ctxt++;
|
2010-01-23 10:06:26 +00:00
|
|
|
} else if (skb_is_gso_v6(skb)) {
|
2010-01-09 02:24:10 +00:00
|
|
|
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);
|
|
|
|
adapter->hw_tso6_ctxt++;
|
|
|
|
}
|
|
|
|
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
|
|
|
|
tx_buffer_info = &tx_ring->tx_buffer_info[i];
|
|
|
|
context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
|
|
|
|
|
|
|
|
/* VLAN MACLEN IPLEN */
|
|
|
|
if (tx_flags & IXGBE_TX_FLAGS_VLAN)
|
|
|
|
vlan_macip_lens |=
|
|
|
|
(tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
|
|
|
|
vlan_macip_lens |= ((skb_network_offset(skb)) <<
|
|
|
|
IXGBE_ADVTXD_MACLEN_SHIFT);
|
|
|
|
*hdr_len += skb_network_offset(skb);
|
|
|
|
vlan_macip_lens |=
|
|
|
|
(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(vlan_macip_lens);
|
|
|
|
context_desc->seqnum_seed = 0;
|
|
|
|
|
|
|
|
/* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
|
|
|
|
type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
|
|
|
|
IXGBE_ADVTXD_DTYP_CTXT);
|
|
|
|
|
|
|
|
if (skb->protocol == htons(ETH_P_IP))
|
|
|
|
type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
|
|
|
|
type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
|
|
|
|
context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
|
|
|
|
|
|
|
|
/* MSS L4LEN IDX */
|
|
|
|
mss_l4len_idx =
|
|
|
|
(skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
|
|
|
|
mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
|
|
|
|
/* use index 1 for TSO */
|
|
|
|
mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
|
|
|
|
context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
|
|
|
|
|
|
|
|
tx_buffer_info->time_stamp = jiffies;
|
|
|
|
tx_buffer_info->next_to_watch = i;
|
|
|
|
|
|
|
|
i++;
|
|
|
|
if (i == tx_ring->count)
|
|
|
|
i = 0;
|
|
|
|
tx_ring->next_to_use = i;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool ixgbevf_tx_csum(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *tx_ring,
|
|
|
|
struct sk_buff *skb, u32 tx_flags)
|
|
|
|
{
|
|
|
|
struct ixgbe_adv_tx_context_desc *context_desc;
|
|
|
|
unsigned int i;
|
|
|
|
struct ixgbevf_tx_buffer *tx_buffer_info;
|
|
|
|
u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
|
|
|
|
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL ||
|
|
|
|
(tx_flags & IXGBE_TX_FLAGS_VLAN)) {
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
tx_buffer_info = &tx_ring->tx_buffer_info[i];
|
|
|
|
context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
|
|
|
|
|
|
|
|
if (tx_flags & IXGBE_TX_FLAGS_VLAN)
|
|
|
|
vlan_macip_lens |= (tx_flags &
|
|
|
|
IXGBE_TX_FLAGS_VLAN_MASK);
|
|
|
|
vlan_macip_lens |= (skb_network_offset(skb) <<
|
|
|
|
IXGBE_ADVTXD_MACLEN_SHIFT);
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL)
|
|
|
|
vlan_macip_lens |= (skb_transport_header(skb) -
|
|
|
|
skb_network_header(skb));
|
|
|
|
|
|
|
|
context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
|
|
|
|
context_desc->seqnum_seed = 0;
|
|
|
|
|
|
|
|
type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
|
|
|
|
IXGBE_ADVTXD_DTYP_CTXT);
|
|
|
|
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
|
|
switch (skb->protocol) {
|
|
|
|
case __constant_htons(ETH_P_IP):
|
|
|
|
type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
|
|
|
|
if (ip_hdr(skb)->protocol == IPPROTO_TCP)
|
|
|
|
type_tucmd_mlhl |=
|
|
|
|
IXGBE_ADVTXD_TUCMD_L4T_TCP;
|
|
|
|
break;
|
|
|
|
case __constant_htons(ETH_P_IPV6):
|
|
|
|
/* XXX what about other V6 headers?? */
|
|
|
|
if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
|
|
|
|
type_tucmd_mlhl |=
|
|
|
|
IXGBE_ADVTXD_TUCMD_L4T_TCP;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if (unlikely(net_ratelimit())) {
|
|
|
|
printk(KERN_WARNING
|
|
|
|
"partial checksum but "
|
|
|
|
"proto=%x!\n",
|
|
|
|
skb->protocol);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
|
|
|
|
/* use index zero for tx checksum offload */
|
|
|
|
context_desc->mss_l4len_idx = 0;
|
|
|
|
|
|
|
|
tx_buffer_info->time_stamp = jiffies;
|
|
|
|
tx_buffer_info->next_to_watch = i;
|
|
|
|
|
|
|
|
adapter->hw_csum_tx_good++;
|
|
|
|
i++;
|
|
|
|
if (i == tx_ring->count)
|
|
|
|
i = 0;
|
|
|
|
tx_ring->next_to_use = i;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ixgbevf_tx_map(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *tx_ring,
|
|
|
|
struct sk_buff *skb, u32 tx_flags,
|
|
|
|
unsigned int first)
|
|
|
|
{
|
|
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
struct ixgbevf_tx_buffer *tx_buffer_info;
|
|
|
|
unsigned int len;
|
|
|
|
unsigned int total = skb->len;
|
|
|
|
unsigned int offset = 0, size, count = 0, i;
|
|
|
|
unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
|
|
|
|
unsigned int f;
|
|
|
|
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
|
|
|
|
len = min(skb_headlen(skb), total);
|
|
|
|
while (len) {
|
|
|
|
tx_buffer_info = &tx_ring->tx_buffer_info[i];
|
|
|
|
size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD);
|
|
|
|
|
|
|
|
tx_buffer_info->length = size;
|
|
|
|
tx_buffer_info->mapped_as_page = false;
|
|
|
|
tx_buffer_info->dma = pci_map_single(adapter->pdev,
|
|
|
|
skb->data + offset,
|
|
|
|
size, PCI_DMA_TODEVICE);
|
|
|
|
if (pci_dma_mapping_error(pdev, tx_buffer_info->dma))
|
|
|
|
goto dma_error;
|
|
|
|
tx_buffer_info->time_stamp = jiffies;
|
|
|
|
tx_buffer_info->next_to_watch = i;
|
|
|
|
|
|
|
|
len -= size;
|
|
|
|
total -= size;
|
|
|
|
offset += size;
|
|
|
|
count++;
|
|
|
|
i++;
|
|
|
|
if (i == tx_ring->count)
|
|
|
|
i = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (f = 0; f < nr_frags; f++) {
|
|
|
|
struct skb_frag_struct *frag;
|
|
|
|
|
|
|
|
frag = &skb_shinfo(skb)->frags[f];
|
|
|
|
len = min((unsigned int)frag->size, total);
|
|
|
|
offset = frag->page_offset;
|
|
|
|
|
|
|
|
while (len) {
|
|
|
|
tx_buffer_info = &tx_ring->tx_buffer_info[i];
|
|
|
|
size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD);
|
|
|
|
|
|
|
|
tx_buffer_info->length = size;
|
|
|
|
tx_buffer_info->dma = pci_map_page(adapter->pdev,
|
|
|
|
frag->page,
|
|
|
|
offset,
|
|
|
|
size,
|
|
|
|
PCI_DMA_TODEVICE);
|
|
|
|
tx_buffer_info->mapped_as_page = true;
|
|
|
|
if (pci_dma_mapping_error(pdev, tx_buffer_info->dma))
|
|
|
|
goto dma_error;
|
|
|
|
tx_buffer_info->time_stamp = jiffies;
|
|
|
|
tx_buffer_info->next_to_watch = i;
|
|
|
|
|
|
|
|
len -= size;
|
|
|
|
total -= size;
|
|
|
|
offset += size;
|
|
|
|
count++;
|
|
|
|
i++;
|
|
|
|
if (i == tx_ring->count)
|
|
|
|
i = 0;
|
|
|
|
}
|
|
|
|
if (total == 0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i == 0)
|
|
|
|
i = tx_ring->count - 1;
|
|
|
|
else
|
|
|
|
i = i - 1;
|
|
|
|
tx_ring->tx_buffer_info[i].skb = skb;
|
|
|
|
tx_ring->tx_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 tx_buffer_info map */
|
|
|
|
tx_buffer_info->dma = 0;
|
|
|
|
tx_buffer_info->time_stamp = 0;
|
|
|
|
tx_buffer_info->next_to_watch = 0;
|
|
|
|
count--;
|
|
|
|
|
|
|
|
/* clear timestamp and dma mappings for remaining portion of packet */
|
|
|
|
while (count >= 0) {
|
|
|
|
count--;
|
|
|
|
i--;
|
|
|
|
if (i < 0)
|
|
|
|
i += tx_ring->count;
|
|
|
|
tx_buffer_info = &tx_ring->tx_buffer_info[i];
|
|
|
|
ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info);
|
|
|
|
}
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_tx_queue(struct ixgbevf_adapter *adapter,
|
|
|
|
struct ixgbevf_ring *tx_ring, int tx_flags,
|
|
|
|
int count, u32 paylen, u8 hdr_len)
|
|
|
|
{
|
|
|
|
union ixgbe_adv_tx_desc *tx_desc = NULL;
|
|
|
|
struct ixgbevf_tx_buffer *tx_buffer_info;
|
|
|
|
u32 olinfo_status = 0, cmd_type_len = 0;
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
|
|
|
|
|
|
|
|
cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
|
|
|
|
|
|
|
|
cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
|
|
|
|
|
|
|
|
if (tx_flags & IXGBE_TX_FLAGS_VLAN)
|
|
|
|
cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
|
|
|
|
|
|
|
|
if (tx_flags & IXGBE_TX_FLAGS_TSO) {
|
|
|
|
cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
|
|
|
|
|
|
|
|
olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
|
|
|
|
IXGBE_ADVTXD_POPTS_SHIFT;
|
|
|
|
|
|
|
|
/* use index 1 context for tso */
|
|
|
|
olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
|
|
|
|
if (tx_flags & IXGBE_TX_FLAGS_IPV4)
|
|
|
|
olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
|
|
|
|
IXGBE_ADVTXD_POPTS_SHIFT;
|
|
|
|
|
|
|
|
} else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
|
|
|
|
olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
|
|
|
|
IXGBE_ADVTXD_POPTS_SHIFT;
|
|
|
|
|
|
|
|
olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
|
|
|
|
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
while (count--) {
|
|
|
|
tx_buffer_info = &tx_ring->tx_buffer_info[i];
|
|
|
|
tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
|
|
|
|
tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
|
|
|
|
tx_desc->read.cmd_type_len =
|
|
|
|
cpu_to_le32(cmd_type_len | tx_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(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);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __ixgbevf_maybe_stop_tx(struct net_device *netdev,
|
|
|
|
struct ixgbevf_ring *tx_ring, int size)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
|
|
|
|
netif_stop_subqueue(netdev, tx_ring->queue_index);
|
|
|
|
/* Herbert's original patch had:
|
|
|
|
* smp_mb__after_netif_stop_queue();
|
|
|
|
* but since that doesn't exist yet, just open code it. */
|
|
|
|
smp_mb();
|
|
|
|
|
|
|
|
/* We need to check again in a case another CPU has just
|
|
|
|
* made room available. */
|
|
|
|
if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
|
|
|
|
return -EBUSY;
|
|
|
|
|
|
|
|
/* A reprieve! - use start_queue because it doesn't call schedule */
|
|
|
|
netif_start_subqueue(netdev, tx_ring->queue_index);
|
|
|
|
++adapter->restart_queue;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ixgbevf_maybe_stop_tx(struct net_device *netdev,
|
|
|
|
struct ixgbevf_ring *tx_ring, int size)
|
|
|
|
{
|
|
|
|
if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
|
|
|
|
return 0;
|
|
|
|
return __ixgbevf_maybe_stop_tx(netdev, tx_ring, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
struct ixgbevf_ring *tx_ring;
|
|
|
|
unsigned int first;
|
|
|
|
unsigned int tx_flags = 0;
|
|
|
|
u8 hdr_len = 0;
|
|
|
|
int r_idx = 0, tso;
|
|
|
|
int count = 0;
|
|
|
|
|
|
|
|
unsigned int f;
|
|
|
|
|
|
|
|
tx_ring = &adapter->tx_ring[r_idx];
|
|
|
|
|
|
|
|
if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
|
|
|
|
tx_flags |= vlan_tx_tag_get(skb);
|
|
|
|
tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
|
|
|
|
tx_flags |= IXGBE_TX_FLAGS_VLAN;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* four things can cause us to need a context descriptor */
|
|
|
|
if (skb_is_gso(skb) ||
|
|
|
|
(skb->ip_summed == CHECKSUM_PARTIAL) ||
|
|
|
|
(tx_flags & IXGBE_TX_FLAGS_VLAN))
|
|
|
|
count++;
|
|
|
|
|
|
|
|
count += TXD_USE_COUNT(skb_headlen(skb));
|
|
|
|
for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
|
|
|
|
count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
|
|
|
|
|
|
|
|
if (ixgbevf_maybe_stop_tx(netdev, tx_ring, count)) {
|
|
|
|
adapter->tx_busy++;
|
|
|
|
return NETDEV_TX_BUSY;
|
|
|
|
}
|
|
|
|
|
|
|
|
first = tx_ring->next_to_use;
|
|
|
|
|
|
|
|
if (skb->protocol == htons(ETH_P_IP))
|
|
|
|
tx_flags |= IXGBE_TX_FLAGS_IPV4;
|
|
|
|
tso = ixgbevf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
|
|
|
|
if (tso < 0) {
|
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
return NETDEV_TX_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (tso)
|
|
|
|
tx_flags |= IXGBE_TX_FLAGS_TSO;
|
|
|
|
else if (ixgbevf_tx_csum(adapter, tx_ring, skb, tx_flags) &&
|
|
|
|
(skb->ip_summed == CHECKSUM_PARTIAL))
|
|
|
|
tx_flags |= IXGBE_TX_FLAGS_CSUM;
|
|
|
|
|
|
|
|
ixgbevf_tx_queue(adapter, tx_ring, tx_flags,
|
|
|
|
ixgbevf_tx_map(adapter, tx_ring, skb, tx_flags, first),
|
|
|
|
skb->len, hdr_len);
|
|
|
|
|
|
|
|
netdev->trans_start = jiffies;
|
|
|
|
|
|
|
|
ixgbevf_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
|
|
|
|
|
|
|
|
return NETDEV_TX_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_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 *ixgbevf_get_stats(struct net_device *netdev)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
|
|
|
|
/* only return the current stats */
|
|
|
|
return &adapter->net_stats;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_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 ixgbevf_set_mac(struct net_device *netdev, void *p)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
struct ixgbe_hw *hw = &adapter->hw;
|
|
|
|
struct sockaddr *addr = p;
|
|
|
|
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
|
|
return -EADDRNOTAVAIL;
|
|
|
|
|
|
|
|
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
|
|
|
|
memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
|
|
|
|
|
|
|
|
if (hw->mac.ops.set_rar)
|
|
|
|
hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_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 ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
|
|
|
|
|
|
/* MTU < 68 is an error and causes problems on some kernels */
|
|
|
|
if ((new_mtu < 68) || (max_frame > MAXIMUM_ETHERNET_VLAN_SIZE))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
hw_dbg(&adapter->hw, "changing MTU from %d to %d\n",
|
|
|
|
netdev->mtu, new_mtu);
|
|
|
|
/* must set new MTU before calling down or up */
|
|
|
|
netdev->mtu = new_mtu;
|
|
|
|
|
|
|
|
if (netif_running(netdev))
|
|
|
|
ixgbevf_reinit_locked(adapter);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ixgbevf_shutdown(struct pci_dev *pdev)
|
|
|
|
{
|
|
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
|
|
|
|
netif_device_detach(netdev);
|
|
|
|
|
|
|
|
if (netif_running(netdev)) {
|
|
|
|
ixgbevf_down(adapter);
|
|
|
|
ixgbevf_free_irq(adapter);
|
|
|
|
ixgbevf_free_all_tx_resources(adapter);
|
|
|
|
ixgbevf_free_all_rx_resources(adapter);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
pci_save_state(pdev);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct net_device_ops ixgbe_netdev_ops = {
|
|
|
|
.ndo_open = &ixgbevf_open,
|
|
|
|
.ndo_stop = &ixgbevf_close,
|
|
|
|
.ndo_start_xmit = &ixgbevf_xmit_frame,
|
|
|
|
.ndo_get_stats = &ixgbevf_get_stats,
|
|
|
|
.ndo_set_rx_mode = &ixgbevf_set_rx_mode,
|
|
|
|
.ndo_set_multicast_list = &ixgbevf_set_rx_mode,
|
|
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
|
|
.ndo_set_mac_address = &ixgbevf_set_mac,
|
|
|
|
.ndo_change_mtu = &ixgbevf_change_mtu,
|
|
|
|
.ndo_tx_timeout = &ixgbevf_tx_timeout,
|
|
|
|
.ndo_vlan_rx_register = &ixgbevf_vlan_rx_register,
|
|
|
|
.ndo_vlan_rx_add_vid = &ixgbevf_vlan_rx_add_vid,
|
|
|
|
.ndo_vlan_rx_kill_vid = &ixgbevf_vlan_rx_kill_vid,
|
|
|
|
};
|
|
|
|
|
|
|
|
static void ixgbevf_assign_netdev_ops(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter;
|
|
|
|
adapter = netdev_priv(dev);
|
|
|
|
dev->netdev_ops = &ixgbe_netdev_ops;
|
|
|
|
ixgbevf_set_ethtool_ops(dev);
|
|
|
|
dev->watchdog_timeo = 5 * HZ;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_probe - Device Initialization Routine
|
|
|
|
* @pdev: PCI device information struct
|
|
|
|
* @ent: entry in ixgbevf_pci_tbl
|
|
|
|
*
|
|
|
|
* Returns 0 on success, negative on failure
|
|
|
|
*
|
|
|
|
* ixgbevf_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 ixgbevf_probe(struct pci_dev *pdev,
|
|
|
|
const struct pci_device_id *ent)
|
|
|
|
{
|
|
|
|
struct net_device *netdev;
|
|
|
|
struct ixgbevf_adapter *adapter = NULL;
|
|
|
|
struct ixgbe_hw *hw = NULL;
|
|
|
|
const struct ixgbevf_info *ii = ixgbevf_info_tbl[ent->driver_data];
|
|
|
|
static int cards_found;
|
|
|
|
int err, pci_using_dac;
|
|
|
|
|
|
|
|
err = pci_enable_device(pdev);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
|
|
|
|
!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
|
|
|
|
pci_using_dac = 1;
|
|
|
|
} else {
|
|
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
|
|
if (err) {
|
|
|
|
err = pci_set_consistent_dma_mask(pdev,
|
|
|
|
DMA_BIT_MASK(32));
|
|
|
|
if (err) {
|
|
|
|
dev_err(&pdev->dev, "No usable DMA "
|
|
|
|
"configuration, aborting\n");
|
|
|
|
goto err_dma;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
pci_using_dac = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = pci_request_regions(pdev, ixgbevf_driver_name);
|
|
|
|
if (err) {
|
|
|
|
dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err);
|
|
|
|
goto err_pci_reg;
|
|
|
|
}
|
|
|
|
|
|
|
|
pci_set_master(pdev);
|
|
|
|
|
|
|
|
#ifdef HAVE_TX_MQ
|
|
|
|
netdev = alloc_etherdev_mq(sizeof(struct ixgbevf_adapter),
|
|
|
|
MAX_TX_QUEUES);
|
|
|
|
#else
|
|
|
|
netdev = alloc_etherdev(sizeof(struct ixgbevf_adapter));
|
|
|
|
#endif
|
|
|
|
if (!netdev) {
|
|
|
|
err = -ENOMEM;
|
|
|
|
goto err_alloc_etherdev;
|
|
|
|
}
|
|
|
|
|
|
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
|
|
|
|
|
|
|
pci_set_drvdata(pdev, netdev);
|
|
|
|
adapter = netdev_priv(netdev);
|
|
|
|
|
|
|
|
adapter->netdev = netdev;
|
|
|
|
adapter->pdev = pdev;
|
|
|
|
hw = &adapter->hw;
|
|
|
|
hw->back = adapter;
|
|
|
|
adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* call save state here in standalone driver because it relies on
|
|
|
|
* adapter struct to exist, and needs to call netdev_priv
|
|
|
|
*/
|
|
|
|
pci_save_state(pdev);
|
|
|
|
|
|
|
|
hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
|
|
|
|
pci_resource_len(pdev, 0));
|
|
|
|
if (!hw->hw_addr) {
|
|
|
|
err = -EIO;
|
|
|
|
goto err_ioremap;
|
|
|
|
}
|
|
|
|
|
|
|
|
ixgbevf_assign_netdev_ops(netdev);
|
|
|
|
|
|
|
|
adapter->bd_number = cards_found;
|
|
|
|
|
|
|
|
/* Setup hw api */
|
|
|
|
memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
|
|
|
|
hw->mac.type = ii->mac;
|
|
|
|
|
|
|
|
memcpy(&hw->mbx.ops, &ixgbevf_mbx_ops,
|
|
|
|
sizeof(struct ixgbe_mac_operations));
|
|
|
|
|
|
|
|
adapter->flags &= ~IXGBE_FLAG_RX_PS_CAPABLE;
|
|
|
|
adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
|
|
|
|
adapter->flags |= IXGBE_FLAG_RX_1BUF_CAPABLE;
|
|
|
|
|
|
|
|
/* setup the private structure */
|
|
|
|
err = ixgbevf_sw_init(adapter);
|
|
|
|
|
|
|
|
ixgbevf_init_last_counter_stats(adapter);
|
|
|
|
|
|
|
|
#ifdef MAX_SKB_FRAGS
|
|
|
|
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;
|
|
|
|
netdev->vlan_features |= NETIF_F_TSO;
|
|
|
|
netdev->vlan_features |= NETIF_F_TSO6;
|
|
|
|
netdev->vlan_features |= NETIF_F_IP_CSUM;
|
|
|
|
netdev->vlan_features |= NETIF_F_SG;
|
|
|
|
|
|
|
|
if (pci_using_dac)
|
|
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
|
|
|
|
|
|
#endif /* MAX_SKB_FRAGS */
|
|
|
|
|
|
|
|
/* The HW MAC address was set and/or determined in sw_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->dev_addr)) {
|
|
|
|
printk(KERN_ERR "invalid MAC address\n");
|
|
|
|
err = -EIO;
|
|
|
|
goto err_sw_init;
|
|
|
|
}
|
|
|
|
|
|
|
|
init_timer(&adapter->watchdog_timer);
|
|
|
|
adapter->watchdog_timer.function = &ixgbevf_watchdog;
|
|
|
|
adapter->watchdog_timer.data = (unsigned long)adapter;
|
|
|
|
|
|
|
|
INIT_WORK(&adapter->reset_task, ixgbevf_reset_task);
|
|
|
|
INIT_WORK(&adapter->watchdog_task, ixgbevf_watchdog_task);
|
|
|
|
|
|
|
|
err = ixgbevf_init_interrupt_scheme(adapter);
|
|
|
|
if (err)
|
|
|
|
goto err_sw_init;
|
|
|
|
|
|
|
|
/* pick up the PCI bus settings for reporting later */
|
|
|
|
if (hw->mac.ops.get_bus_info)
|
|
|
|
hw->mac.ops.get_bus_info(hw);
|
|
|
|
|
|
|
|
|
|
|
|
netif_carrier_off(netdev);
|
|
|
|
netif_tx_stop_all_queues(netdev);
|
|
|
|
|
|
|
|
strcpy(netdev->name, "eth%d");
|
|
|
|
|
|
|
|
err = register_netdev(netdev);
|
|
|
|
if (err)
|
|
|
|
goto err_register;
|
|
|
|
|
|
|
|
adapter->netdev_registered = true;
|
|
|
|
|
|
|
|
/* print the MAC address */
|
|
|
|
hw_dbg(hw, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
|
|
|
|
netdev->dev_addr[0],
|
|
|
|
netdev->dev_addr[1],
|
|
|
|
netdev->dev_addr[2],
|
|
|
|
netdev->dev_addr[3],
|
|
|
|
netdev->dev_addr[4],
|
|
|
|
netdev->dev_addr[5]);
|
|
|
|
|
|
|
|
hw_dbg(hw, "MAC: %d\n", hw->mac.type);
|
|
|
|
|
|
|
|
hw_dbg(hw, "LRO is disabled \n");
|
|
|
|
|
|
|
|
hw_dbg(hw, "Intel(R) 82599 Virtual Function\n");
|
|
|
|
cards_found++;
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_register:
|
|
|
|
err_sw_init:
|
|
|
|
ixgbevf_reset_interrupt_capability(adapter);
|
|
|
|
iounmap(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;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbevf_remove - Device Removal Routine
|
|
|
|
* @pdev: PCI device information struct
|
|
|
|
*
|
|
|
|
* ixgbevf_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 ixgbevf_remove(struct pci_dev *pdev)
|
|
|
|
{
|
|
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
|
|
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
|
|
|
|
set_bit(__IXGBEVF_DOWN, &adapter->state);
|
|
|
|
|
|
|
|
del_timer_sync(&adapter->watchdog_timer);
|
|
|
|
|
|
|
|
cancel_work_sync(&adapter->watchdog_task);
|
|
|
|
|
|
|
|
flush_scheduled_work();
|
|
|
|
|
|
|
|
if (adapter->netdev_registered) {
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
adapter->netdev_registered = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
ixgbevf_reset_interrupt_capability(adapter);
|
|
|
|
|
|
|
|
iounmap(adapter->hw.hw_addr);
|
|
|
|
pci_release_regions(pdev);
|
|
|
|
|
|
|
|
hw_dbg(&adapter->hw, "Remove complete\n");
|
|
|
|
|
|
|
|
kfree(adapter->tx_ring);
|
|
|
|
kfree(adapter->rx_ring);
|
|
|
|
|
|
|
|
free_netdev(netdev);
|
|
|
|
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct pci_driver ixgbevf_driver = {
|
|
|
|
.name = ixgbevf_driver_name,
|
|
|
|
.id_table = ixgbevf_pci_tbl,
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.probe = ixgbevf_probe,
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.remove = __devexit_p(ixgbevf_remove),
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|
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.shutdown = ixgbevf_shutdown,
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};
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/**
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* ixgbe_init_module - Driver Registration Routine
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*
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* ixgbe_init_module is the first routine called when the driver is
|
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|
|
* loaded. All it does is register with the PCI subsystem.
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**/
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static int __init ixgbevf_init_module(void)
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|
|
|
{
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|
|
|
int ret;
|
|
|
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printk(KERN_INFO "ixgbevf: %s - version %s\n", ixgbevf_driver_string,
|
|
|
|
ixgbevf_driver_version);
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|
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|
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|
|
printk(KERN_INFO "%s\n", ixgbevf_copyright);
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|
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|
|
ret = pci_register_driver(&ixgbevf_driver);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(ixgbevf_init_module);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ixgbe_exit_module - Driver Exit Cleanup Routine
|
|
|
|
*
|
|
|
|
* ixgbe_exit_module is called just before the driver is removed
|
|
|
|
* from memory.
|
|
|
|
**/
|
|
|
|
static void __exit ixgbevf_exit_module(void)
|
|
|
|
{
|
|
|
|
pci_unregister_driver(&ixgbevf_driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
/**
|
|
|
|
* ixgbe_get_hw_dev_name - return device name string
|
|
|
|
* used by hardware layer to print debugging information
|
|
|
|
**/
|
|
|
|
char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw)
|
|
|
|
{
|
|
|
|
struct ixgbevf_adapter *adapter = hw->back;
|
|
|
|
return adapter->netdev->name;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
module_exit(ixgbevf_exit_module);
|
|
|
|
|
|
|
|
/* ixgbevf_main.c */
|