![Randy Dunlap](/assets/img/avatar_default.png)
vmxnet3 was using dprintk() for debugging output. This was defined in <linux/dst.h> and was the only thing that was used from that header file. This caused compile errors when CONFIG_BLOCK was not enabled due to bio* and BIO* uses in the header file, so change this driver to use dev_dbg() for debugging output. include/linux/dst.h:520: error: dereferencing pointer to incomplete type include/linux/dst.h:520: error: 'BIO_POOL_BITS' undeclared (first use in this function) include/linux/dst.h:521: error: dereferencing pointer to incomplete type include/linux/dst.h:522: error: dereferencing pointer to incomplete type include/linux/dst.h:525: error: dereferencing pointer to incomplete type make[4]: *** [drivers/net/vmxnet3/vmxnet3_drv.o] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Bhavesh Davda <bhavesh@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2575 lines
66 KiB
C
2575 lines
66 KiB
C
/*
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* Linux driver for VMware's vmxnet3 ethernet NIC.
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*
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* Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; version 2 of the License and no later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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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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*
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* Maintained by: Shreyas Bhatewara <pv-drivers@vmware.com>
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*
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*/
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#include "vmxnet3_int.h"
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char vmxnet3_driver_name[] = "vmxnet3";
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#define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver"
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/*
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* PCI Device ID Table
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* Last entry must be all 0s
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*/
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static const struct pci_device_id vmxnet3_pciid_table[] = {
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{PCI_VDEVICE(VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)},
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{0}
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};
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MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table);
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static atomic_t devices_found;
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/*
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* Enable/Disable the given intr
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*/
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static void
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vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx)
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{
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VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0);
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}
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static void
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vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx)
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{
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VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1);
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}
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/*
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* Enable/Disable all intrs used by the device
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*/
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static void
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vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter)
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{
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int i;
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for (i = 0; i < adapter->intr.num_intrs; i++)
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vmxnet3_enable_intr(adapter, i);
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}
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static void
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vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter)
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{
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int i;
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for (i = 0; i < adapter->intr.num_intrs; i++)
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vmxnet3_disable_intr(adapter, i);
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}
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static void
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vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events)
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{
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VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events);
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}
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static bool
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vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
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{
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return netif_queue_stopped(adapter->netdev);
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}
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static void
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vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
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{
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tq->stopped = false;
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netif_start_queue(adapter->netdev);
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}
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static void
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vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
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{
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tq->stopped = false;
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netif_wake_queue(adapter->netdev);
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}
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static void
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vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
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{
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tq->stopped = true;
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tq->num_stop++;
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netif_stop_queue(adapter->netdev);
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}
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/*
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* Check the link state. This may start or stop the tx queue.
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*/
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static void
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vmxnet3_check_link(struct vmxnet3_adapter *adapter)
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{
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u32 ret;
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VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
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ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
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adapter->link_speed = ret >> 16;
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if (ret & 1) { /* Link is up. */
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printk(KERN_INFO "%s: NIC Link is Up %d Mbps\n",
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adapter->netdev->name, adapter->link_speed);
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if (!netif_carrier_ok(adapter->netdev))
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netif_carrier_on(adapter->netdev);
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vmxnet3_tq_start(&adapter->tx_queue, adapter);
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} else {
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printk(KERN_INFO "%s: NIC Link is Down\n",
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adapter->netdev->name);
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if (netif_carrier_ok(adapter->netdev))
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netif_carrier_off(adapter->netdev);
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vmxnet3_tq_stop(&adapter->tx_queue, adapter);
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}
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}
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static void
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vmxnet3_process_events(struct vmxnet3_adapter *adapter)
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{
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u32 events = adapter->shared->ecr;
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if (!events)
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return;
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vmxnet3_ack_events(adapter, events);
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/* Check if link state has changed */
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if (events & VMXNET3_ECR_LINK)
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vmxnet3_check_link(adapter);
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/* Check if there is an error on xmit/recv queues */
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if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
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VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
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VMXNET3_CMD_GET_QUEUE_STATUS);
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if (adapter->tqd_start->status.stopped) {
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printk(KERN_ERR "%s: tq error 0x%x\n",
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adapter->netdev->name,
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adapter->tqd_start->status.error);
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}
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if (adapter->rqd_start->status.stopped) {
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printk(KERN_ERR "%s: rq error 0x%x\n",
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adapter->netdev->name,
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adapter->rqd_start->status.error);
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}
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schedule_work(&adapter->work);
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}
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}
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static void
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vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi,
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struct pci_dev *pdev)
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{
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if (tbi->map_type == VMXNET3_MAP_SINGLE)
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pci_unmap_single(pdev, tbi->dma_addr, tbi->len,
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PCI_DMA_TODEVICE);
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else if (tbi->map_type == VMXNET3_MAP_PAGE)
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pci_unmap_page(pdev, tbi->dma_addr, tbi->len,
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PCI_DMA_TODEVICE);
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else
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BUG_ON(tbi->map_type != VMXNET3_MAP_NONE);
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tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */
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}
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static int
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vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq,
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struct pci_dev *pdev, struct vmxnet3_adapter *adapter)
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{
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struct sk_buff *skb;
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int entries = 0;
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/* no out of order completion */
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BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp);
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BUG_ON(tq->tx_ring.base[eop_idx].txd.eop != 1);
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skb = tq->buf_info[eop_idx].skb;
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BUG_ON(skb == NULL);
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tq->buf_info[eop_idx].skb = NULL;
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VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size);
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while (tq->tx_ring.next2comp != eop_idx) {
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vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp,
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pdev);
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/* update next2comp w/o tx_lock. Since we are marking more,
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* instead of less, tx ring entries avail, the worst case is
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* that the tx routine incorrectly re-queues a pkt due to
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* insufficient tx ring entries.
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*/
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vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
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entries++;
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}
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dev_kfree_skb_any(skb);
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return entries;
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}
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static int
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vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq,
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struct vmxnet3_adapter *adapter)
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{
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int completed = 0;
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union Vmxnet3_GenericDesc *gdesc;
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gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
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while (gdesc->tcd.gen == tq->comp_ring.gen) {
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completed += vmxnet3_unmap_pkt(gdesc->tcd.txdIdx, tq,
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adapter->pdev, adapter);
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vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring);
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gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
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}
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if (completed) {
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spin_lock(&tq->tx_lock);
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if (unlikely(vmxnet3_tq_stopped(tq, adapter) &&
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vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) >
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VMXNET3_WAKE_QUEUE_THRESHOLD(tq) &&
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netif_carrier_ok(adapter->netdev))) {
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vmxnet3_tq_wake(tq, adapter);
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}
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spin_unlock(&tq->tx_lock);
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}
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return completed;
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}
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static void
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vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq,
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struct vmxnet3_adapter *adapter)
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{
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int i;
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while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) {
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struct vmxnet3_tx_buf_info *tbi;
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union Vmxnet3_GenericDesc *gdesc;
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tbi = tq->buf_info + tq->tx_ring.next2comp;
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gdesc = tq->tx_ring.base + tq->tx_ring.next2comp;
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vmxnet3_unmap_tx_buf(tbi, adapter->pdev);
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if (tbi->skb) {
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dev_kfree_skb_any(tbi->skb);
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tbi->skb = NULL;
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}
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vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
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}
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/* sanity check, verify all buffers are indeed unmapped and freed */
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for (i = 0; i < tq->tx_ring.size; i++) {
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BUG_ON(tq->buf_info[i].skb != NULL ||
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tq->buf_info[i].map_type != VMXNET3_MAP_NONE);
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}
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tq->tx_ring.gen = VMXNET3_INIT_GEN;
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tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
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tq->comp_ring.gen = VMXNET3_INIT_GEN;
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tq->comp_ring.next2proc = 0;
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}
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void
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vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq,
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struct vmxnet3_adapter *adapter)
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{
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if (tq->tx_ring.base) {
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pci_free_consistent(adapter->pdev, tq->tx_ring.size *
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sizeof(struct Vmxnet3_TxDesc),
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tq->tx_ring.base, tq->tx_ring.basePA);
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tq->tx_ring.base = NULL;
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}
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if (tq->data_ring.base) {
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pci_free_consistent(adapter->pdev, tq->data_ring.size *
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sizeof(struct Vmxnet3_TxDataDesc),
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tq->data_ring.base, tq->data_ring.basePA);
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tq->data_ring.base = NULL;
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}
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if (tq->comp_ring.base) {
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pci_free_consistent(adapter->pdev, tq->comp_ring.size *
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sizeof(struct Vmxnet3_TxCompDesc),
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tq->comp_ring.base, tq->comp_ring.basePA);
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tq->comp_ring.base = NULL;
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}
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kfree(tq->buf_info);
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tq->buf_info = NULL;
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}
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static void
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vmxnet3_tq_init(struct vmxnet3_tx_queue *tq,
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struct vmxnet3_adapter *adapter)
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{
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int i;
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/* reset the tx ring contents to 0 and reset the tx ring states */
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memset(tq->tx_ring.base, 0, tq->tx_ring.size *
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sizeof(struct Vmxnet3_TxDesc));
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tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
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tq->tx_ring.gen = VMXNET3_INIT_GEN;
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memset(tq->data_ring.base, 0, tq->data_ring.size *
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sizeof(struct Vmxnet3_TxDataDesc));
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/* reset the tx comp ring contents to 0 and reset comp ring states */
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memset(tq->comp_ring.base, 0, tq->comp_ring.size *
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sizeof(struct Vmxnet3_TxCompDesc));
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tq->comp_ring.next2proc = 0;
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tq->comp_ring.gen = VMXNET3_INIT_GEN;
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/* reset the bookkeeping data */
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memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size);
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for (i = 0; i < tq->tx_ring.size; i++)
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tq->buf_info[i].map_type = VMXNET3_MAP_NONE;
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/* stats are not reset */
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}
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static int
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vmxnet3_tq_create(struct vmxnet3_tx_queue *tq,
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struct vmxnet3_adapter *adapter)
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{
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BUG_ON(tq->tx_ring.base || tq->data_ring.base ||
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tq->comp_ring.base || tq->buf_info);
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tq->tx_ring.base = pci_alloc_consistent(adapter->pdev, tq->tx_ring.size
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* sizeof(struct Vmxnet3_TxDesc),
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&tq->tx_ring.basePA);
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if (!tq->tx_ring.base) {
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printk(KERN_ERR "%s: failed to allocate tx ring\n",
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adapter->netdev->name);
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goto err;
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}
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tq->data_ring.base = pci_alloc_consistent(adapter->pdev,
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tq->data_ring.size *
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sizeof(struct Vmxnet3_TxDataDesc),
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&tq->data_ring.basePA);
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if (!tq->data_ring.base) {
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printk(KERN_ERR "%s: failed to allocate data ring\n",
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adapter->netdev->name);
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goto err;
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}
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tq->comp_ring.base = pci_alloc_consistent(adapter->pdev,
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tq->comp_ring.size *
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sizeof(struct Vmxnet3_TxCompDesc),
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&tq->comp_ring.basePA);
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if (!tq->comp_ring.base) {
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printk(KERN_ERR "%s: failed to allocate tx comp ring\n",
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adapter->netdev->name);
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goto err;
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}
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tq->buf_info = kcalloc(tq->tx_ring.size, sizeof(tq->buf_info[0]),
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GFP_KERNEL);
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if (!tq->buf_info) {
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printk(KERN_ERR "%s: failed to allocate tx bufinfo\n",
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adapter->netdev->name);
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goto err;
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}
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return 0;
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err:
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vmxnet3_tq_destroy(tq, adapter);
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return -ENOMEM;
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}
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/*
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* starting from ring->next2fill, allocate rx buffers for the given ring
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* of the rx queue and update the rx desc. stop after @num_to_alloc buffers
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* are allocated or allocation fails
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*/
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static int
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vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx,
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int num_to_alloc, struct vmxnet3_adapter *adapter)
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{
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int num_allocated = 0;
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struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx];
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struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx];
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u32 val;
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while (num_allocated < num_to_alloc) {
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struct vmxnet3_rx_buf_info *rbi;
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union Vmxnet3_GenericDesc *gd;
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rbi = rbi_base + ring->next2fill;
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gd = ring->base + ring->next2fill;
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if (rbi->buf_type == VMXNET3_RX_BUF_SKB) {
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if (rbi->skb == NULL) {
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rbi->skb = dev_alloc_skb(rbi->len +
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NET_IP_ALIGN);
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if (unlikely(rbi->skb == NULL)) {
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rq->stats.rx_buf_alloc_failure++;
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break;
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}
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rbi->skb->dev = adapter->netdev;
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skb_reserve(rbi->skb, NET_IP_ALIGN);
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rbi->dma_addr = pci_map_single(adapter->pdev,
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rbi->skb->data, rbi->len,
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PCI_DMA_FROMDEVICE);
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} else {
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/* rx buffer skipped by the device */
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}
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val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT;
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} else {
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BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE ||
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rbi->len != PAGE_SIZE);
|
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|
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if (rbi->page == NULL) {
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rbi->page = alloc_page(GFP_ATOMIC);
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if (unlikely(rbi->page == NULL)) {
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rq->stats.rx_buf_alloc_failure++;
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break;
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}
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rbi->dma_addr = pci_map_page(adapter->pdev,
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rbi->page, 0, PAGE_SIZE,
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PCI_DMA_FROMDEVICE);
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} else {
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/* rx buffers skipped by the device */
|
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}
|
|
val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT;
|
|
}
|
|
|
|
BUG_ON(rbi->dma_addr == 0);
|
|
gd->rxd.addr = rbi->dma_addr;
|
|
gd->dword[2] = (ring->gen << VMXNET3_RXD_GEN_SHIFT) | val |
|
|
rbi->len;
|
|
|
|
num_allocated++;
|
|
vmxnet3_cmd_ring_adv_next2fill(ring);
|
|
}
|
|
rq->uncommitted[ring_idx] += num_allocated;
|
|
|
|
dev_dbg(&adapter->netdev->dev,
|
|
"alloc_rx_buf: %d allocated, next2fill %u, next2comp "
|
|
"%u, uncommited %u\n", num_allocated, ring->next2fill,
|
|
ring->next2comp, rq->uncommitted[ring_idx]);
|
|
|
|
/* so that the device can distinguish a full ring and an empty ring */
|
|
BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp);
|
|
|
|
return num_allocated;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd,
|
|
struct vmxnet3_rx_buf_info *rbi)
|
|
{
|
|
struct skb_frag_struct *frag = skb_shinfo(skb)->frags +
|
|
skb_shinfo(skb)->nr_frags;
|
|
|
|
BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS);
|
|
|
|
frag->page = rbi->page;
|
|
frag->page_offset = 0;
|
|
frag->size = rcd->len;
|
|
skb->data_len += frag->size;
|
|
skb_shinfo(skb)->nr_frags++;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx,
|
|
struct vmxnet3_tx_queue *tq, struct pci_dev *pdev,
|
|
struct vmxnet3_adapter *adapter)
|
|
{
|
|
u32 dw2, len;
|
|
unsigned long buf_offset;
|
|
int i;
|
|
union Vmxnet3_GenericDesc *gdesc;
|
|
struct vmxnet3_tx_buf_info *tbi = NULL;
|
|
|
|
BUG_ON(ctx->copy_size > skb_headlen(skb));
|
|
|
|
/* use the previous gen bit for the SOP desc */
|
|
dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT;
|
|
|
|
ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill;
|
|
gdesc = ctx->sop_txd; /* both loops below can be skipped */
|
|
|
|
/* no need to map the buffer if headers are copied */
|
|
if (ctx->copy_size) {
|
|
ctx->sop_txd->txd.addr = tq->data_ring.basePA +
|
|
tq->tx_ring.next2fill *
|
|
sizeof(struct Vmxnet3_TxDataDesc);
|
|
ctx->sop_txd->dword[2] = dw2 | ctx->copy_size;
|
|
ctx->sop_txd->dword[3] = 0;
|
|
|
|
tbi = tq->buf_info + tq->tx_ring.next2fill;
|
|
tbi->map_type = VMXNET3_MAP_NONE;
|
|
|
|
dev_dbg(&adapter->netdev->dev,
|
|
"txd[%u]: 0x%Lx 0x%x 0x%x\n",
|
|
tq->tx_ring.next2fill, ctx->sop_txd->txd.addr,
|
|
ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]);
|
|
vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
|
|
|
|
/* use the right gen for non-SOP desc */
|
|
dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
|
|
}
|
|
|
|
/* linear part can use multiple tx desc if it's big */
|
|
len = skb_headlen(skb) - ctx->copy_size;
|
|
buf_offset = ctx->copy_size;
|
|
while (len) {
|
|
u32 buf_size;
|
|
|
|
buf_size = len > VMXNET3_MAX_TX_BUF_SIZE ?
|
|
VMXNET3_MAX_TX_BUF_SIZE : len;
|
|
|
|
tbi = tq->buf_info + tq->tx_ring.next2fill;
|
|
tbi->map_type = VMXNET3_MAP_SINGLE;
|
|
tbi->dma_addr = pci_map_single(adapter->pdev,
|
|
skb->data + buf_offset, buf_size,
|
|
PCI_DMA_TODEVICE);
|
|
|
|
tbi->len = buf_size; /* this automatically convert 2^14 to 0 */
|
|
|
|
gdesc = tq->tx_ring.base + tq->tx_ring.next2fill;
|
|
BUG_ON(gdesc->txd.gen == tq->tx_ring.gen);
|
|
|
|
gdesc->txd.addr = tbi->dma_addr;
|
|
gdesc->dword[2] = dw2 | buf_size;
|
|
gdesc->dword[3] = 0;
|
|
|
|
dev_dbg(&adapter->netdev->dev,
|
|
"txd[%u]: 0x%Lx 0x%x 0x%x\n",
|
|
tq->tx_ring.next2fill, gdesc->txd.addr,
|
|
gdesc->dword[2], gdesc->dword[3]);
|
|
vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
|
|
dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
|
|
|
|
len -= buf_size;
|
|
buf_offset += buf_size;
|
|
}
|
|
|
|
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
|
|
struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
|
|
|
|
tbi = tq->buf_info + tq->tx_ring.next2fill;
|
|
tbi->map_type = VMXNET3_MAP_PAGE;
|
|
tbi->dma_addr = pci_map_page(adapter->pdev, frag->page,
|
|
frag->page_offset, frag->size,
|
|
PCI_DMA_TODEVICE);
|
|
|
|
tbi->len = frag->size;
|
|
|
|
gdesc = tq->tx_ring.base + tq->tx_ring.next2fill;
|
|
BUG_ON(gdesc->txd.gen == tq->tx_ring.gen);
|
|
|
|
gdesc->txd.addr = tbi->dma_addr;
|
|
gdesc->dword[2] = dw2 | frag->size;
|
|
gdesc->dword[3] = 0;
|
|
|
|
dev_dbg(&adapter->netdev->dev,
|
|
"txd[%u]: 0x%llu %u %u\n",
|
|
tq->tx_ring.next2fill, gdesc->txd.addr,
|
|
gdesc->dword[2], gdesc->dword[3]);
|
|
vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
|
|
dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
|
|
}
|
|
|
|
ctx->eop_txd = gdesc;
|
|
|
|
/* set the last buf_info for the pkt */
|
|
tbi->skb = skb;
|
|
tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base;
|
|
}
|
|
|
|
|
|
/*
|
|
* parse and copy relevant protocol headers:
|
|
* For a tso pkt, relevant headers are L2/3/4 including options
|
|
* For a pkt requesting csum offloading, they are L2/3 and may include L4
|
|
* if it's a TCP/UDP pkt
|
|
*
|
|
* Returns:
|
|
* -1: error happens during parsing
|
|
* 0: protocol headers parsed, but too big to be copied
|
|
* 1: protocol headers parsed and copied
|
|
*
|
|
* Other effects:
|
|
* 1. related *ctx fields are updated.
|
|
* 2. ctx->copy_size is # of bytes copied
|
|
* 3. the portion copied is guaranteed to be in the linear part
|
|
*
|
|
*/
|
|
static int
|
|
vmxnet3_parse_and_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
|
|
struct vmxnet3_tx_ctx *ctx,
|
|
struct vmxnet3_adapter *adapter)
|
|
{
|
|
struct Vmxnet3_TxDataDesc *tdd;
|
|
|
|
if (ctx->mss) {
|
|
ctx->eth_ip_hdr_size = skb_transport_offset(skb);
|
|
ctx->l4_hdr_size = ((struct tcphdr *)
|
|
skb_transport_header(skb))->doff * 4;
|
|
ctx->copy_size = ctx->eth_ip_hdr_size + ctx->l4_hdr_size;
|
|
} else {
|
|
unsigned int pull_size;
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
ctx->eth_ip_hdr_size = skb_transport_offset(skb);
|
|
|
|
if (ctx->ipv4) {
|
|
struct iphdr *iph = (struct iphdr *)
|
|
skb_network_header(skb);
|
|
if (iph->protocol == IPPROTO_TCP) {
|
|
pull_size = ctx->eth_ip_hdr_size +
|
|
sizeof(struct tcphdr);
|
|
|
|
if (unlikely(!pskb_may_pull(skb,
|
|
pull_size))) {
|
|
goto err;
|
|
}
|
|
ctx->l4_hdr_size = ((struct tcphdr *)
|
|
skb_transport_header(skb))->doff * 4;
|
|
} else if (iph->protocol == IPPROTO_UDP) {
|
|
ctx->l4_hdr_size =
|
|
sizeof(struct udphdr);
|
|
} else {
|
|
ctx->l4_hdr_size = 0;
|
|
}
|
|
} else {
|
|
/* for simplicity, don't copy L4 headers */
|
|
ctx->l4_hdr_size = 0;
|
|
}
|
|
ctx->copy_size = ctx->eth_ip_hdr_size +
|
|
ctx->l4_hdr_size;
|
|
} else {
|
|
ctx->eth_ip_hdr_size = 0;
|
|
ctx->l4_hdr_size = 0;
|
|
/* copy as much as allowed */
|
|
ctx->copy_size = min((unsigned int)VMXNET3_HDR_COPY_SIZE
|
|
, skb_headlen(skb));
|
|
}
|
|
|
|
/* make sure headers are accessible directly */
|
|
if (unlikely(!pskb_may_pull(skb, ctx->copy_size)))
|
|
goto err;
|
|
}
|
|
|
|
if (unlikely(ctx->copy_size > VMXNET3_HDR_COPY_SIZE)) {
|
|
tq->stats.oversized_hdr++;
|
|
ctx->copy_size = 0;
|
|
return 0;
|
|
}
|
|
|
|
tdd = tq->data_ring.base + tq->tx_ring.next2fill;
|
|
|
|
memcpy(tdd->data, skb->data, ctx->copy_size);
|
|
dev_dbg(&adapter->netdev->dev,
|
|
"copy %u bytes to dataRing[%u]\n",
|
|
ctx->copy_size, tq->tx_ring.next2fill);
|
|
return 1;
|
|
|
|
err:
|
|
return -1;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_prepare_tso(struct sk_buff *skb,
|
|
struct vmxnet3_tx_ctx *ctx)
|
|
{
|
|
struct tcphdr *tcph = (struct tcphdr *)skb_transport_header(skb);
|
|
if (ctx->ipv4) {
|
|
struct iphdr *iph = (struct iphdr *)skb_network_header(skb);
|
|
iph->check = 0;
|
|
tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0,
|
|
IPPROTO_TCP, 0);
|
|
} else {
|
|
struct ipv6hdr *iph = (struct ipv6hdr *)skb_network_header(skb);
|
|
tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0,
|
|
IPPROTO_TCP, 0);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Transmits a pkt thru a given tq
|
|
* Returns:
|
|
* NETDEV_TX_OK: descriptors are setup successfully
|
|
* NETDEV_TX_OK: error occured, the pkt is dropped
|
|
* NETDEV_TX_BUSY: tx ring is full, queue is stopped
|
|
*
|
|
* Side-effects:
|
|
* 1. tx ring may be changed
|
|
* 2. tq stats may be updated accordingly
|
|
* 3. shared->txNumDeferred may be updated
|
|
*/
|
|
|
|
static int
|
|
vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
|
|
struct vmxnet3_adapter *adapter, struct net_device *netdev)
|
|
{
|
|
int ret;
|
|
u32 count;
|
|
unsigned long flags;
|
|
struct vmxnet3_tx_ctx ctx;
|
|
union Vmxnet3_GenericDesc *gdesc;
|
|
|
|
/* conservatively estimate # of descriptors to use */
|
|
count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) +
|
|
skb_shinfo(skb)->nr_frags + 1;
|
|
|
|
ctx.ipv4 = (skb->protocol == __constant_ntohs(ETH_P_IP));
|
|
|
|
ctx.mss = skb_shinfo(skb)->gso_size;
|
|
if (ctx.mss) {
|
|
if (skb_header_cloned(skb)) {
|
|
if (unlikely(pskb_expand_head(skb, 0, 0,
|
|
GFP_ATOMIC) != 0)) {
|
|
tq->stats.drop_tso++;
|
|
goto drop_pkt;
|
|
}
|
|
tq->stats.copy_skb_header++;
|
|
}
|
|
vmxnet3_prepare_tso(skb, &ctx);
|
|
} else {
|
|
if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) {
|
|
|
|
/* non-tso pkts must not use more than
|
|
* VMXNET3_MAX_TXD_PER_PKT entries
|
|
*/
|
|
if (skb_linearize(skb) != 0) {
|
|
tq->stats.drop_too_many_frags++;
|
|
goto drop_pkt;
|
|
}
|
|
tq->stats.linearized++;
|
|
|
|
/* recalculate the # of descriptors to use */
|
|
count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1;
|
|
}
|
|
}
|
|
|
|
ret = vmxnet3_parse_and_copy_hdr(skb, tq, &ctx, adapter);
|
|
if (ret >= 0) {
|
|
BUG_ON(ret <= 0 && ctx.copy_size != 0);
|
|
/* hdrs parsed, check against other limits */
|
|
if (ctx.mss) {
|
|
if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size >
|
|
VMXNET3_MAX_TX_BUF_SIZE)) {
|
|
goto hdr_too_big;
|
|
}
|
|
} else {
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
if (unlikely(ctx.eth_ip_hdr_size +
|
|
skb->csum_offset >
|
|
VMXNET3_MAX_CSUM_OFFSET)) {
|
|
goto hdr_too_big;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
tq->stats.drop_hdr_inspect_err++;
|
|
goto drop_pkt;
|
|
}
|
|
|
|
spin_lock_irqsave(&tq->tx_lock, flags);
|
|
|
|
if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) {
|
|
tq->stats.tx_ring_full++;
|
|
dev_dbg(&adapter->netdev->dev,
|
|
"tx queue stopped on %s, next2comp %u"
|
|
" next2fill %u\n", adapter->netdev->name,
|
|
tq->tx_ring.next2comp, tq->tx_ring.next2fill);
|
|
|
|
vmxnet3_tq_stop(tq, adapter);
|
|
spin_unlock_irqrestore(&tq->tx_lock, flags);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
/* fill tx descs related to addr & len */
|
|
vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter);
|
|
|
|
/* setup the EOP desc */
|
|
ctx.eop_txd->dword[3] = VMXNET3_TXD_CQ | VMXNET3_TXD_EOP;
|
|
|
|
/* setup the SOP desc */
|
|
gdesc = ctx.sop_txd;
|
|
if (ctx.mss) {
|
|
gdesc->txd.hlen = ctx.eth_ip_hdr_size + ctx.l4_hdr_size;
|
|
gdesc->txd.om = VMXNET3_OM_TSO;
|
|
gdesc->txd.msscof = ctx.mss;
|
|
tq->shared->txNumDeferred += (skb->len - gdesc->txd.hlen +
|
|
ctx.mss - 1) / ctx.mss;
|
|
} else {
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
gdesc->txd.hlen = ctx.eth_ip_hdr_size;
|
|
gdesc->txd.om = VMXNET3_OM_CSUM;
|
|
gdesc->txd.msscof = ctx.eth_ip_hdr_size +
|
|
skb->csum_offset;
|
|
} else {
|
|
gdesc->txd.om = 0;
|
|
gdesc->txd.msscof = 0;
|
|
}
|
|
tq->shared->txNumDeferred++;
|
|
}
|
|
|
|
if (vlan_tx_tag_present(skb)) {
|
|
gdesc->txd.ti = 1;
|
|
gdesc->txd.tci = vlan_tx_tag_get(skb);
|
|
}
|
|
|
|
wmb();
|
|
|
|
/* finally flips the GEN bit of the SOP desc */
|
|
gdesc->dword[2] ^= VMXNET3_TXD_GEN;
|
|
dev_dbg(&adapter->netdev->dev,
|
|
"txd[%u]: SOP 0x%Lx 0x%x 0x%x\n",
|
|
(u32)((union Vmxnet3_GenericDesc *)ctx.sop_txd -
|
|
tq->tx_ring.base), gdesc->txd.addr, gdesc->dword[2],
|
|
gdesc->dword[3]);
|
|
|
|
spin_unlock_irqrestore(&tq->tx_lock, flags);
|
|
|
|
if (tq->shared->txNumDeferred >= tq->shared->txThreshold) {
|
|
tq->shared->txNumDeferred = 0;
|
|
VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_TXPROD,
|
|
tq->tx_ring.next2fill);
|
|
}
|
|
netdev->trans_start = jiffies;
|
|
|
|
return NETDEV_TX_OK;
|
|
|
|
hdr_too_big:
|
|
tq->stats.drop_oversized_hdr++;
|
|
drop_pkt:
|
|
tq->stats.drop_total++;
|
|
dev_kfree_skb(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
|
|
static netdev_tx_t
|
|
vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
|
|
{
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
struct vmxnet3_tx_queue *tq = &adapter->tx_queue;
|
|
|
|
return vmxnet3_tq_xmit(skb, tq, adapter, netdev);
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_rx_csum(struct vmxnet3_adapter *adapter,
|
|
struct sk_buff *skb,
|
|
union Vmxnet3_GenericDesc *gdesc)
|
|
{
|
|
if (!gdesc->rcd.cnc && adapter->rxcsum) {
|
|
/* typical case: TCP/UDP over IP and both csums are correct */
|
|
if ((gdesc->dword[3] & VMXNET3_RCD_CSUM_OK) ==
|
|
VMXNET3_RCD_CSUM_OK) {
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp));
|
|
BUG_ON(!(gdesc->rcd.v4 || gdesc->rcd.v6));
|
|
BUG_ON(gdesc->rcd.frg);
|
|
} else {
|
|
if (gdesc->rcd.csum) {
|
|
skb->csum = htons(gdesc->rcd.csum);
|
|
skb->ip_summed = CHECKSUM_PARTIAL;
|
|
} else {
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
}
|
|
}
|
|
} else {
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd,
|
|
struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter)
|
|
{
|
|
rq->stats.drop_err++;
|
|
if (!rcd->fcs)
|
|
rq->stats.drop_fcs++;
|
|
|
|
rq->stats.drop_total++;
|
|
|
|
/*
|
|
* We do not unmap and chain the rx buffer to the skb.
|
|
* We basically pretend this buffer is not used and will be recycled
|
|
* by vmxnet3_rq_alloc_rx_buf()
|
|
*/
|
|
|
|
/*
|
|
* ctx->skb may be NULL if this is the first and the only one
|
|
* desc for the pkt
|
|
*/
|
|
if (ctx->skb)
|
|
dev_kfree_skb_irq(ctx->skb);
|
|
|
|
ctx->skb = NULL;
|
|
}
|
|
|
|
|
|
static int
|
|
vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
|
|
struct vmxnet3_adapter *adapter, int quota)
|
|
{
|
|
static u32 rxprod_reg[2] = {VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2};
|
|
u32 num_rxd = 0;
|
|
struct Vmxnet3_RxCompDesc *rcd;
|
|
struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx;
|
|
|
|
rcd = &rq->comp_ring.base[rq->comp_ring.next2proc].rcd;
|
|
while (rcd->gen == rq->comp_ring.gen) {
|
|
struct vmxnet3_rx_buf_info *rbi;
|
|
struct sk_buff *skb;
|
|
int num_to_alloc;
|
|
struct Vmxnet3_RxDesc *rxd;
|
|
u32 idx, ring_idx;
|
|
|
|
if (num_rxd >= quota) {
|
|
/* we may stop even before we see the EOP desc of
|
|
* the current pkt
|
|
*/
|
|
break;
|
|
}
|
|
num_rxd++;
|
|
|
|
idx = rcd->rxdIdx;
|
|
ring_idx = rcd->rqID == rq->qid ? 0 : 1;
|
|
|
|
rxd = &rq->rx_ring[ring_idx].base[idx].rxd;
|
|
rbi = rq->buf_info[ring_idx] + idx;
|
|
|
|
BUG_ON(rxd->addr != rbi->dma_addr || rxd->len != rbi->len);
|
|
|
|
if (unlikely(rcd->eop && rcd->err)) {
|
|
vmxnet3_rx_error(rq, rcd, ctx, adapter);
|
|
goto rcd_done;
|
|
}
|
|
|
|
if (rcd->sop) { /* first buf of the pkt */
|
|
BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD ||
|
|
rcd->rqID != rq->qid);
|
|
|
|
BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB);
|
|
BUG_ON(ctx->skb != NULL || rbi->skb == NULL);
|
|
|
|
if (unlikely(rcd->len == 0)) {
|
|
/* Pretend the rx buffer is skipped. */
|
|
BUG_ON(!(rcd->sop && rcd->eop));
|
|
dev_dbg(&adapter->netdev->dev,
|
|
"rxRing[%u][%u] 0 length\n",
|
|
ring_idx, idx);
|
|
goto rcd_done;
|
|
}
|
|
|
|
ctx->skb = rbi->skb;
|
|
rbi->skb = NULL;
|
|
|
|
pci_unmap_single(adapter->pdev, rbi->dma_addr, rbi->len,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
skb_put(ctx->skb, rcd->len);
|
|
} else {
|
|
BUG_ON(ctx->skb == NULL);
|
|
/* non SOP buffer must be type 1 in most cases */
|
|
if (rbi->buf_type == VMXNET3_RX_BUF_PAGE) {
|
|
BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY);
|
|
|
|
if (rcd->len) {
|
|
pci_unmap_page(adapter->pdev,
|
|
rbi->dma_addr, rbi->len,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
vmxnet3_append_frag(ctx->skb, rcd, rbi);
|
|
rbi->page = NULL;
|
|
}
|
|
} else {
|
|
/*
|
|
* The only time a non-SOP buffer is type 0 is
|
|
* when it's EOP and error flag is raised, which
|
|
* has already been handled.
|
|
*/
|
|
BUG_ON(true);
|
|
}
|
|
}
|
|
|
|
skb = ctx->skb;
|
|
if (rcd->eop) {
|
|
skb->len += skb->data_len;
|
|
skb->truesize += skb->data_len;
|
|
|
|
vmxnet3_rx_csum(adapter, skb,
|
|
(union Vmxnet3_GenericDesc *)rcd);
|
|
skb->protocol = eth_type_trans(skb, adapter->netdev);
|
|
|
|
if (unlikely(adapter->vlan_grp && rcd->ts)) {
|
|
vlan_hwaccel_receive_skb(skb,
|
|
adapter->vlan_grp, rcd->tci);
|
|
} else {
|
|
netif_receive_skb(skb);
|
|
}
|
|
|
|
adapter->netdev->last_rx = jiffies;
|
|
ctx->skb = NULL;
|
|
}
|
|
|
|
rcd_done:
|
|
/* device may skip some rx descs */
|
|
rq->rx_ring[ring_idx].next2comp = idx;
|
|
VMXNET3_INC_RING_IDX_ONLY(rq->rx_ring[ring_idx].next2comp,
|
|
rq->rx_ring[ring_idx].size);
|
|
|
|
/* refill rx buffers frequently to avoid starving the h/w */
|
|
num_to_alloc = vmxnet3_cmd_ring_desc_avail(rq->rx_ring +
|
|
ring_idx);
|
|
if (unlikely(num_to_alloc > VMXNET3_RX_ALLOC_THRESHOLD(rq,
|
|
ring_idx, adapter))) {
|
|
vmxnet3_rq_alloc_rx_buf(rq, ring_idx, num_to_alloc,
|
|
adapter);
|
|
|
|
/* if needed, update the register */
|
|
if (unlikely(rq->shared->updateRxProd)) {
|
|
VMXNET3_WRITE_BAR0_REG(adapter,
|
|
rxprod_reg[ring_idx] + rq->qid * 8,
|
|
rq->rx_ring[ring_idx].next2fill);
|
|
rq->uncommitted[ring_idx] = 0;
|
|
}
|
|
}
|
|
|
|
vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring);
|
|
rcd = &rq->comp_ring.base[rq->comp_ring.next2proc].rcd;
|
|
}
|
|
|
|
return num_rxd;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq,
|
|
struct vmxnet3_adapter *adapter)
|
|
{
|
|
u32 i, ring_idx;
|
|
struct Vmxnet3_RxDesc *rxd;
|
|
|
|
for (ring_idx = 0; ring_idx < 2; ring_idx++) {
|
|
for (i = 0; i < rq->rx_ring[ring_idx].size; i++) {
|
|
rxd = &rq->rx_ring[ring_idx].base[i].rxd;
|
|
|
|
if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD &&
|
|
rq->buf_info[ring_idx][i].skb) {
|
|
pci_unmap_single(adapter->pdev, rxd->addr,
|
|
rxd->len, PCI_DMA_FROMDEVICE);
|
|
dev_kfree_skb(rq->buf_info[ring_idx][i].skb);
|
|
rq->buf_info[ring_idx][i].skb = NULL;
|
|
} else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY &&
|
|
rq->buf_info[ring_idx][i].page) {
|
|
pci_unmap_page(adapter->pdev, rxd->addr,
|
|
rxd->len, PCI_DMA_FROMDEVICE);
|
|
put_page(rq->buf_info[ring_idx][i].page);
|
|
rq->buf_info[ring_idx][i].page = NULL;
|
|
}
|
|
}
|
|
|
|
rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN;
|
|
rq->rx_ring[ring_idx].next2fill =
|
|
rq->rx_ring[ring_idx].next2comp = 0;
|
|
rq->uncommitted[ring_idx] = 0;
|
|
}
|
|
|
|
rq->comp_ring.gen = VMXNET3_INIT_GEN;
|
|
rq->comp_ring.next2proc = 0;
|
|
}
|
|
|
|
|
|
void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
|
|
struct vmxnet3_adapter *adapter)
|
|
{
|
|
int i;
|
|
int j;
|
|
|
|
/* all rx buffers must have already been freed */
|
|
for (i = 0; i < 2; i++) {
|
|
if (rq->buf_info[i]) {
|
|
for (j = 0; j < rq->rx_ring[i].size; j++)
|
|
BUG_ON(rq->buf_info[i][j].page != NULL);
|
|
}
|
|
}
|
|
|
|
|
|
kfree(rq->buf_info[0]);
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
if (rq->rx_ring[i].base) {
|
|
pci_free_consistent(adapter->pdev, rq->rx_ring[i].size
|
|
* sizeof(struct Vmxnet3_RxDesc),
|
|
rq->rx_ring[i].base,
|
|
rq->rx_ring[i].basePA);
|
|
rq->rx_ring[i].base = NULL;
|
|
}
|
|
rq->buf_info[i] = NULL;
|
|
}
|
|
|
|
if (rq->comp_ring.base) {
|
|
pci_free_consistent(adapter->pdev, rq->comp_ring.size *
|
|
sizeof(struct Vmxnet3_RxCompDesc),
|
|
rq->comp_ring.base, rq->comp_ring.basePA);
|
|
rq->comp_ring.base = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
vmxnet3_rq_init(struct vmxnet3_rx_queue *rq,
|
|
struct vmxnet3_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
/* initialize buf_info */
|
|
for (i = 0; i < rq->rx_ring[0].size; i++) {
|
|
|
|
/* 1st buf for a pkt is skbuff */
|
|
if (i % adapter->rx_buf_per_pkt == 0) {
|
|
rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB;
|
|
rq->buf_info[0][i].len = adapter->skb_buf_size;
|
|
} else { /* subsequent bufs for a pkt is frag */
|
|
rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE;
|
|
rq->buf_info[0][i].len = PAGE_SIZE;
|
|
}
|
|
}
|
|
for (i = 0; i < rq->rx_ring[1].size; i++) {
|
|
rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE;
|
|
rq->buf_info[1][i].len = PAGE_SIZE;
|
|
}
|
|
|
|
/* reset internal state and allocate buffers for both rings */
|
|
for (i = 0; i < 2; i++) {
|
|
rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0;
|
|
rq->uncommitted[i] = 0;
|
|
|
|
memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size *
|
|
sizeof(struct Vmxnet3_RxDesc));
|
|
rq->rx_ring[i].gen = VMXNET3_INIT_GEN;
|
|
}
|
|
if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1,
|
|
adapter) == 0) {
|
|
/* at least has 1 rx buffer for the 1st ring */
|
|
return -ENOMEM;
|
|
}
|
|
vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter);
|
|
|
|
/* reset the comp ring */
|
|
rq->comp_ring.next2proc = 0;
|
|
memset(rq->comp_ring.base, 0, rq->comp_ring.size *
|
|
sizeof(struct Vmxnet3_RxCompDesc));
|
|
rq->comp_ring.gen = VMXNET3_INIT_GEN;
|
|
|
|
/* reset rxctx */
|
|
rq->rx_ctx.skb = NULL;
|
|
|
|
/* stats are not reset */
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int
|
|
vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter)
|
|
{
|
|
int i;
|
|
size_t sz;
|
|
struct vmxnet3_rx_buf_info *bi;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
|
|
sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc);
|
|
rq->rx_ring[i].base = pci_alloc_consistent(adapter->pdev, sz,
|
|
&rq->rx_ring[i].basePA);
|
|
if (!rq->rx_ring[i].base) {
|
|
printk(KERN_ERR "%s: failed to allocate rx ring %d\n",
|
|
adapter->netdev->name, i);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc);
|
|
rq->comp_ring.base = pci_alloc_consistent(adapter->pdev, sz,
|
|
&rq->comp_ring.basePA);
|
|
if (!rq->comp_ring.base) {
|
|
printk(KERN_ERR "%s: failed to allocate rx comp ring\n",
|
|
adapter->netdev->name);
|
|
goto err;
|
|
}
|
|
|
|
sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size +
|
|
rq->rx_ring[1].size);
|
|
bi = kmalloc(sz, GFP_KERNEL);
|
|
if (!bi) {
|
|
printk(KERN_ERR "%s: failed to allocate rx bufinfo\n",
|
|
adapter->netdev->name);
|
|
goto err;
|
|
}
|
|
memset(bi, 0, sz);
|
|
rq->buf_info[0] = bi;
|
|
rq->buf_info[1] = bi + rq->rx_ring[0].size;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
vmxnet3_rq_destroy(rq, adapter);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
|
|
static int
|
|
vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget)
|
|
{
|
|
if (unlikely(adapter->shared->ecr))
|
|
vmxnet3_process_events(adapter);
|
|
|
|
vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
|
|
return vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter, budget);
|
|
}
|
|
|
|
|
|
static int
|
|
vmxnet3_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct vmxnet3_adapter *adapter = container_of(napi,
|
|
struct vmxnet3_adapter, napi);
|
|
int rxd_done;
|
|
|
|
rxd_done = vmxnet3_do_poll(adapter, budget);
|
|
|
|
if (rxd_done < budget) {
|
|
napi_complete(napi);
|
|
vmxnet3_enable_intr(adapter, 0);
|
|
}
|
|
return rxd_done;
|
|
}
|
|
|
|
|
|
/* Interrupt handler for vmxnet3 */
|
|
static irqreturn_t
|
|
vmxnet3_intr(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = dev_id;
|
|
struct vmxnet3_adapter *adapter = netdev_priv(dev);
|
|
|
|
if (unlikely(adapter->intr.type == VMXNET3_IT_INTX)) {
|
|
u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
|
|
if (unlikely(icr == 0))
|
|
/* not ours */
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
|
|
/* disable intr if needed */
|
|
if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE)
|
|
vmxnet3_disable_intr(adapter, 0);
|
|
|
|
napi_schedule(&adapter->napi);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
|
|
|
|
/* netpoll callback. */
|
|
static void
|
|
vmxnet3_netpoll(struct net_device *netdev)
|
|
{
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
int irq;
|
|
|
|
#ifdef CONFIG_PCI_MSI
|
|
if (adapter->intr.type == VMXNET3_IT_MSIX)
|
|
irq = adapter->intr.msix_entries[0].vector;
|
|
else
|
|
#endif
|
|
irq = adapter->pdev->irq;
|
|
|
|
disable_irq(irq);
|
|
vmxnet3_intr(irq, netdev);
|
|
enable_irq(irq);
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
vmxnet3_request_irqs(struct vmxnet3_adapter *adapter)
|
|
{
|
|
int err;
|
|
|
|
#ifdef CONFIG_PCI_MSI
|
|
if (adapter->intr.type == VMXNET3_IT_MSIX) {
|
|
/* we only use 1 MSI-X vector */
|
|
err = request_irq(adapter->intr.msix_entries[0].vector,
|
|
vmxnet3_intr, 0, adapter->netdev->name,
|
|
adapter->netdev);
|
|
} else
|
|
#endif
|
|
if (adapter->intr.type == VMXNET3_IT_MSI) {
|
|
err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0,
|
|
adapter->netdev->name, adapter->netdev);
|
|
} else {
|
|
err = request_irq(adapter->pdev->irq, vmxnet3_intr,
|
|
IRQF_SHARED, adapter->netdev->name,
|
|
adapter->netdev);
|
|
}
|
|
|
|
if (err)
|
|
printk(KERN_ERR "Failed to request irq %s (intr type:%d), error"
|
|
":%d\n", adapter->netdev->name, adapter->intr.type, err);
|
|
|
|
|
|
if (!err) {
|
|
int i;
|
|
/* init our intr settings */
|
|
for (i = 0; i < adapter->intr.num_intrs; i++)
|
|
adapter->intr.mod_levels[i] = UPT1_IML_ADAPTIVE;
|
|
|
|
/* next setup intr index for all intr sources */
|
|
adapter->tx_queue.comp_ring.intr_idx = 0;
|
|
adapter->rx_queue.comp_ring.intr_idx = 0;
|
|
adapter->intr.event_intr_idx = 0;
|
|
|
|
printk(KERN_INFO "%s: intr type %u, mode %u, %u vectors "
|
|
"allocated\n", adapter->netdev->name, adapter->intr.type,
|
|
adapter->intr.mask_mode, adapter->intr.num_intrs);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_free_irqs(struct vmxnet3_adapter *adapter)
|
|
{
|
|
BUG_ON(adapter->intr.type == VMXNET3_IT_AUTO ||
|
|
adapter->intr.num_intrs <= 0);
|
|
|
|
switch (adapter->intr.type) {
|
|
#ifdef CONFIG_PCI_MSI
|
|
case VMXNET3_IT_MSIX:
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->intr.num_intrs; i++)
|
|
free_irq(adapter->intr.msix_entries[i].vector,
|
|
adapter->netdev);
|
|
break;
|
|
}
|
|
#endif
|
|
case VMXNET3_IT_MSI:
|
|
free_irq(adapter->pdev->irq, adapter->netdev);
|
|
break;
|
|
case VMXNET3_IT_INTX:
|
|
free_irq(adapter->pdev->irq, adapter->netdev);
|
|
break;
|
|
default:
|
|
BUG_ON(true);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
|
|
{
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
struct Vmxnet3_DriverShared *shared = adapter->shared;
|
|
u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
|
|
|
|
if (grp) {
|
|
/* add vlan rx stripping. */
|
|
if (adapter->netdev->features & NETIF_F_HW_VLAN_RX) {
|
|
int i;
|
|
struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
|
|
adapter->vlan_grp = grp;
|
|
|
|
/* update FEATURES to device */
|
|
devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_UPDATE_FEATURE);
|
|
/*
|
|
* Clear entire vfTable; then enable untagged pkts.
|
|
* Note: setting one entry in vfTable to non-zero turns
|
|
* on VLAN rx filtering.
|
|
*/
|
|
for (i = 0; i < VMXNET3_VFT_SIZE; i++)
|
|
vfTable[i] = 0;
|
|
|
|
VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0);
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_UPDATE_VLAN_FILTERS);
|
|
} else {
|
|
printk(KERN_ERR "%s: vlan_rx_register when device has "
|
|
"no NETIF_F_HW_VLAN_RX\n", netdev->name);
|
|
}
|
|
} else {
|
|
/* remove vlan rx stripping. */
|
|
struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
|
|
adapter->vlan_grp = NULL;
|
|
|
|
if (devRead->misc.uptFeatures & UPT1_F_RXVLAN) {
|
|
int i;
|
|
|
|
for (i = 0; i < VMXNET3_VFT_SIZE; i++) {
|
|
/* clear entire vfTable; this also disables
|
|
* VLAN rx filtering
|
|
*/
|
|
vfTable[i] = 0;
|
|
}
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_UPDATE_VLAN_FILTERS);
|
|
|
|
/* update FEATURES to device */
|
|
devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_UPDATE_FEATURE);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter)
|
|
{
|
|
if (adapter->vlan_grp) {
|
|
u16 vid;
|
|
u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
|
|
bool activeVlan = false;
|
|
|
|
for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
|
|
if (vlan_group_get_device(adapter->vlan_grp, vid)) {
|
|
VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
|
|
activeVlan = true;
|
|
}
|
|
}
|
|
if (activeVlan) {
|
|
/* continue to allow untagged pkts */
|
|
VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
|
|
{
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
|
|
|
|
VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_UPDATE_VLAN_FILTERS);
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
|
|
{
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
|
|
|
|
VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid);
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_UPDATE_VLAN_FILTERS);
|
|
}
|
|
|
|
|
|
static u8 *
|
|
vmxnet3_copy_mc(struct net_device *netdev)
|
|
{
|
|
u8 *buf = NULL;
|
|
u32 sz = netdev->mc_count * ETH_ALEN;
|
|
|
|
/* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */
|
|
if (sz <= 0xffff) {
|
|
/* We may be called with BH disabled */
|
|
buf = kmalloc(sz, GFP_ATOMIC);
|
|
if (buf) {
|
|
int i;
|
|
struct dev_mc_list *mc = netdev->mc_list;
|
|
|
|
for (i = 0; i < netdev->mc_count; i++) {
|
|
BUG_ON(!mc);
|
|
memcpy(buf + i * ETH_ALEN, mc->dmi_addr,
|
|
ETH_ALEN);
|
|
mc = mc->next;
|
|
}
|
|
}
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_set_mc(struct net_device *netdev)
|
|
{
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
struct Vmxnet3_RxFilterConf *rxConf =
|
|
&adapter->shared->devRead.rxFilterConf;
|
|
u8 *new_table = NULL;
|
|
u32 new_mode = VMXNET3_RXM_UCAST;
|
|
|
|
if (netdev->flags & IFF_PROMISC)
|
|
new_mode |= VMXNET3_RXM_PROMISC;
|
|
|
|
if (netdev->flags & IFF_BROADCAST)
|
|
new_mode |= VMXNET3_RXM_BCAST;
|
|
|
|
if (netdev->flags & IFF_ALLMULTI)
|
|
new_mode |= VMXNET3_RXM_ALL_MULTI;
|
|
else
|
|
if (netdev->mc_count > 0) {
|
|
new_table = vmxnet3_copy_mc(netdev);
|
|
if (new_table) {
|
|
new_mode |= VMXNET3_RXM_MCAST;
|
|
rxConf->mfTableLen = netdev->mc_count *
|
|
ETH_ALEN;
|
|
rxConf->mfTablePA = virt_to_phys(new_table);
|
|
} else {
|
|
printk(KERN_INFO "%s: failed to copy mcast list"
|
|
", setting ALL_MULTI\n", netdev->name);
|
|
new_mode |= VMXNET3_RXM_ALL_MULTI;
|
|
}
|
|
}
|
|
|
|
|
|
if (!(new_mode & VMXNET3_RXM_MCAST)) {
|
|
rxConf->mfTableLen = 0;
|
|
rxConf->mfTablePA = 0;
|
|
}
|
|
|
|
if (new_mode != rxConf->rxMode) {
|
|
rxConf->rxMode = new_mode;
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_UPDATE_RX_MODE);
|
|
}
|
|
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_UPDATE_MAC_FILTERS);
|
|
|
|
kfree(new_table);
|
|
}
|
|
|
|
|
|
/*
|
|
* Set up driver_shared based on settings in adapter.
|
|
*/
|
|
|
|
static void
|
|
vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter)
|
|
{
|
|
struct Vmxnet3_DriverShared *shared = adapter->shared;
|
|
struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
|
|
struct Vmxnet3_TxQueueConf *tqc;
|
|
struct Vmxnet3_RxQueueConf *rqc;
|
|
int i;
|
|
|
|
memset(shared, 0, sizeof(*shared));
|
|
|
|
/* driver settings */
|
|
shared->magic = VMXNET3_REV1_MAGIC;
|
|
devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
|
|
devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ?
|
|
VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64);
|
|
devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX;
|
|
devRead->misc.driverInfo.vmxnet3RevSpt = 1;
|
|
devRead->misc.driverInfo.uptVerSpt = 1;
|
|
|
|
devRead->misc.ddPA = virt_to_phys(adapter);
|
|
devRead->misc.ddLen = sizeof(struct vmxnet3_adapter);
|
|
|
|
/* set up feature flags */
|
|
if (adapter->rxcsum)
|
|
devRead->misc.uptFeatures |= UPT1_F_RXCSUM;
|
|
|
|
if (adapter->lro) {
|
|
devRead->misc.uptFeatures |= UPT1_F_LRO;
|
|
devRead->misc.maxNumRxSG = 1 + MAX_SKB_FRAGS;
|
|
}
|
|
if ((adapter->netdev->features & NETIF_F_HW_VLAN_RX)
|
|
&& adapter->vlan_grp) {
|
|
devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
|
|
}
|
|
|
|
devRead->misc.mtu = adapter->netdev->mtu;
|
|
devRead->misc.queueDescPA = adapter->queue_desc_pa;
|
|
devRead->misc.queueDescLen = sizeof(struct Vmxnet3_TxQueueDesc) +
|
|
sizeof(struct Vmxnet3_RxQueueDesc);
|
|
|
|
/* tx queue settings */
|
|
BUG_ON(adapter->tx_queue.tx_ring.base == NULL);
|
|
|
|
devRead->misc.numTxQueues = 1;
|
|
tqc = &adapter->tqd_start->conf;
|
|
tqc->txRingBasePA = adapter->tx_queue.tx_ring.basePA;
|
|
tqc->dataRingBasePA = adapter->tx_queue.data_ring.basePA;
|
|
tqc->compRingBasePA = adapter->tx_queue.comp_ring.basePA;
|
|
tqc->ddPA = virt_to_phys(adapter->tx_queue.buf_info);
|
|
tqc->txRingSize = adapter->tx_queue.tx_ring.size;
|
|
tqc->dataRingSize = adapter->tx_queue.data_ring.size;
|
|
tqc->compRingSize = adapter->tx_queue.comp_ring.size;
|
|
tqc->ddLen = sizeof(struct vmxnet3_tx_buf_info) *
|
|
tqc->txRingSize;
|
|
tqc->intrIdx = adapter->tx_queue.comp_ring.intr_idx;
|
|
|
|
/* rx queue settings */
|
|
devRead->misc.numRxQueues = 1;
|
|
rqc = &adapter->rqd_start->conf;
|
|
rqc->rxRingBasePA[0] = adapter->rx_queue.rx_ring[0].basePA;
|
|
rqc->rxRingBasePA[1] = adapter->rx_queue.rx_ring[1].basePA;
|
|
rqc->compRingBasePA = adapter->rx_queue.comp_ring.basePA;
|
|
rqc->ddPA = virt_to_phys(adapter->rx_queue.buf_info);
|
|
rqc->rxRingSize[0] = adapter->rx_queue.rx_ring[0].size;
|
|
rqc->rxRingSize[1] = adapter->rx_queue.rx_ring[1].size;
|
|
rqc->compRingSize = adapter->rx_queue.comp_ring.size;
|
|
rqc->ddLen = sizeof(struct vmxnet3_rx_buf_info) *
|
|
(rqc->rxRingSize[0] + rqc->rxRingSize[1]);
|
|
rqc->intrIdx = adapter->rx_queue.comp_ring.intr_idx;
|
|
|
|
/* intr settings */
|
|
devRead->intrConf.autoMask = adapter->intr.mask_mode ==
|
|
VMXNET3_IMM_AUTO;
|
|
devRead->intrConf.numIntrs = adapter->intr.num_intrs;
|
|
for (i = 0; i < adapter->intr.num_intrs; i++)
|
|
devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i];
|
|
|
|
devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx;
|
|
|
|
/* rx filter settings */
|
|
devRead->rxFilterConf.rxMode = 0;
|
|
vmxnet3_restore_vlan(adapter);
|
|
/* the rest are already zeroed */
|
|
}
|
|
|
|
|
|
int
|
|
vmxnet3_activate_dev(struct vmxnet3_adapter *adapter)
|
|
{
|
|
int err;
|
|
u32 ret;
|
|
|
|
dev_dbg(&adapter->netdev->dev,
|
|
"%s: skb_buf_size %d, rx_buf_per_pkt %d, ring sizes"
|
|
" %u %u %u\n", adapter->netdev->name, adapter->skb_buf_size,
|
|
adapter->rx_buf_per_pkt, adapter->tx_queue.tx_ring.size,
|
|
adapter->rx_queue.rx_ring[0].size,
|
|
adapter->rx_queue.rx_ring[1].size);
|
|
|
|
vmxnet3_tq_init(&adapter->tx_queue, adapter);
|
|
err = vmxnet3_rq_init(&adapter->rx_queue, adapter);
|
|
if (err) {
|
|
printk(KERN_ERR "Failed to init rx queue for %s: error %d\n",
|
|
adapter->netdev->name, err);
|
|
goto rq_err;
|
|
}
|
|
|
|
err = vmxnet3_request_irqs(adapter);
|
|
if (err) {
|
|
printk(KERN_ERR "Failed to setup irq for %s: error %d\n",
|
|
adapter->netdev->name, err);
|
|
goto irq_err;
|
|
}
|
|
|
|
vmxnet3_setup_driver_shared(adapter);
|
|
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL,
|
|
VMXNET3_GET_ADDR_LO(adapter->shared_pa));
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH,
|
|
VMXNET3_GET_ADDR_HI(adapter->shared_pa));
|
|
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_ACTIVATE_DEV);
|
|
ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
|
|
|
|
if (ret != 0) {
|
|
printk(KERN_ERR "Failed to activate dev %s: error %u\n",
|
|
adapter->netdev->name, ret);
|
|
err = -EINVAL;
|
|
goto activate_err;
|
|
}
|
|
VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_RXPROD,
|
|
adapter->rx_queue.rx_ring[0].next2fill);
|
|
VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_RXPROD2,
|
|
adapter->rx_queue.rx_ring[1].next2fill);
|
|
|
|
/* Apply the rx filter settins last. */
|
|
vmxnet3_set_mc(adapter->netdev);
|
|
|
|
/*
|
|
* Check link state when first activating device. It will start the
|
|
* tx queue if the link is up.
|
|
*/
|
|
vmxnet3_check_link(adapter);
|
|
|
|
napi_enable(&adapter->napi);
|
|
vmxnet3_enable_all_intrs(adapter);
|
|
clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
|
|
return 0;
|
|
|
|
activate_err:
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0);
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0);
|
|
vmxnet3_free_irqs(adapter);
|
|
irq_err:
|
|
rq_err:
|
|
/* free up buffers we allocated */
|
|
vmxnet3_rq_cleanup(&adapter->rx_queue, adapter);
|
|
return err;
|
|
}
|
|
|
|
|
|
void
|
|
vmxnet3_reset_dev(struct vmxnet3_adapter *adapter)
|
|
{
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
|
|
}
|
|
|
|
|
|
int
|
|
vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter)
|
|
{
|
|
if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state))
|
|
return 0;
|
|
|
|
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_QUIESCE_DEV);
|
|
vmxnet3_disable_all_intrs(adapter);
|
|
|
|
napi_disable(&adapter->napi);
|
|
netif_tx_disable(adapter->netdev);
|
|
adapter->link_speed = 0;
|
|
netif_carrier_off(adapter->netdev);
|
|
|
|
vmxnet3_tq_cleanup(&adapter->tx_queue, adapter);
|
|
vmxnet3_rq_cleanup(&adapter->rx_queue, adapter);
|
|
vmxnet3_free_irqs(adapter);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac)
|
|
{
|
|
u32 tmp;
|
|
|
|
tmp = *(u32 *)mac;
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp);
|
|
|
|
tmp = (mac[5] << 8) | mac[4];
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp);
|
|
}
|
|
|
|
|
|
static int
|
|
vmxnet3_set_mac_addr(struct net_device *netdev, void *p)
|
|
{
|
|
struct sockaddr *addr = p;
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
|
|
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
|
|
vmxnet3_write_mac_addr(adapter, addr->sa_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* ==================== initialization and cleanup routines ============ */
|
|
|
|
static int
|
|
vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64)
|
|
{
|
|
int err;
|
|
unsigned long mmio_start, mmio_len;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
err = pci_enable_device(pdev);
|
|
if (err) {
|
|
printk(KERN_ERR "Failed to enable adapter %s: error %d\n",
|
|
pci_name(pdev), err);
|
|
return err;
|
|
}
|
|
|
|
if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) {
|
|
if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
|
|
printk(KERN_ERR "pci_set_consistent_dma_mask failed "
|
|
"for adapter %s\n", pci_name(pdev));
|
|
err = -EIO;
|
|
goto err_set_mask;
|
|
}
|
|
*dma64 = true;
|
|
} else {
|
|
if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
|
|
printk(KERN_ERR "pci_set_dma_mask failed for adapter "
|
|
"%s\n", pci_name(pdev));
|
|
err = -EIO;
|
|
goto err_set_mask;
|
|
}
|
|
*dma64 = false;
|
|
}
|
|
|
|
err = pci_request_selected_regions(pdev, (1 << 2) - 1,
|
|
vmxnet3_driver_name);
|
|
if (err) {
|
|
printk(KERN_ERR "Failed to request region for adapter %s: "
|
|
"error %d\n", pci_name(pdev), err);
|
|
goto err_set_mask;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
mmio_start = pci_resource_start(pdev, 0);
|
|
mmio_len = pci_resource_len(pdev, 0);
|
|
adapter->hw_addr0 = ioremap(mmio_start, mmio_len);
|
|
if (!adapter->hw_addr0) {
|
|
printk(KERN_ERR "Failed to map bar0 for adapter %s\n",
|
|
pci_name(pdev));
|
|
err = -EIO;
|
|
goto err_ioremap;
|
|
}
|
|
|
|
mmio_start = pci_resource_start(pdev, 1);
|
|
mmio_len = pci_resource_len(pdev, 1);
|
|
adapter->hw_addr1 = ioremap(mmio_start, mmio_len);
|
|
if (!adapter->hw_addr1) {
|
|
printk(KERN_ERR "Failed to map bar1 for adapter %s\n",
|
|
pci_name(pdev));
|
|
err = -EIO;
|
|
goto err_bar1;
|
|
}
|
|
return 0;
|
|
|
|
err_bar1:
|
|
iounmap(adapter->hw_addr0);
|
|
err_ioremap:
|
|
pci_release_selected_regions(pdev, (1 << 2) - 1);
|
|
err_set_mask:
|
|
pci_disable_device(pdev);
|
|
return err;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter)
|
|
{
|
|
BUG_ON(!adapter->pdev);
|
|
|
|
iounmap(adapter->hw_addr0);
|
|
iounmap(adapter->hw_addr1);
|
|
pci_release_selected_regions(adapter->pdev, (1 << 2) - 1);
|
|
pci_disable_device(adapter->pdev);
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter)
|
|
{
|
|
size_t sz;
|
|
|
|
if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE -
|
|
VMXNET3_MAX_ETH_HDR_SIZE) {
|
|
adapter->skb_buf_size = adapter->netdev->mtu +
|
|
VMXNET3_MAX_ETH_HDR_SIZE;
|
|
if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE)
|
|
adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE;
|
|
|
|
adapter->rx_buf_per_pkt = 1;
|
|
} else {
|
|
adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE;
|
|
sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE +
|
|
VMXNET3_MAX_ETH_HDR_SIZE;
|
|
adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE;
|
|
}
|
|
|
|
/*
|
|
* for simplicity, force the ring0 size to be a multiple of
|
|
* rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
|
|
*/
|
|
sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
|
|
adapter->rx_queue.rx_ring[0].size = (adapter->rx_queue.rx_ring[0].size +
|
|
sz - 1) / sz * sz;
|
|
adapter->rx_queue.rx_ring[0].size = min_t(u32,
|
|
adapter->rx_queue.rx_ring[0].size,
|
|
VMXNET3_RX_RING_MAX_SIZE / sz * sz);
|
|
}
|
|
|
|
|
|
int
|
|
vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size,
|
|
u32 rx_ring_size, u32 rx_ring2_size)
|
|
{
|
|
int err;
|
|
|
|
adapter->tx_queue.tx_ring.size = tx_ring_size;
|
|
adapter->tx_queue.data_ring.size = tx_ring_size;
|
|
adapter->tx_queue.comp_ring.size = tx_ring_size;
|
|
adapter->tx_queue.shared = &adapter->tqd_start->ctrl;
|
|
adapter->tx_queue.stopped = true;
|
|
err = vmxnet3_tq_create(&adapter->tx_queue, adapter);
|
|
if (err)
|
|
return err;
|
|
|
|
adapter->rx_queue.rx_ring[0].size = rx_ring_size;
|
|
adapter->rx_queue.rx_ring[1].size = rx_ring2_size;
|
|
vmxnet3_adjust_rx_ring_size(adapter);
|
|
adapter->rx_queue.comp_ring.size = adapter->rx_queue.rx_ring[0].size +
|
|
adapter->rx_queue.rx_ring[1].size;
|
|
adapter->rx_queue.qid = 0;
|
|
adapter->rx_queue.qid2 = 1;
|
|
adapter->rx_queue.shared = &adapter->rqd_start->ctrl;
|
|
err = vmxnet3_rq_create(&adapter->rx_queue, adapter);
|
|
if (err)
|
|
vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
vmxnet3_open(struct net_device *netdev)
|
|
{
|
|
struct vmxnet3_adapter *adapter;
|
|
int err;
|
|
|
|
adapter = netdev_priv(netdev);
|
|
|
|
spin_lock_init(&adapter->tx_queue.tx_lock);
|
|
|
|
err = vmxnet3_create_queues(adapter, VMXNET3_DEF_TX_RING_SIZE,
|
|
VMXNET3_DEF_RX_RING_SIZE,
|
|
VMXNET3_DEF_RX_RING_SIZE);
|
|
if (err)
|
|
goto queue_err;
|
|
|
|
err = vmxnet3_activate_dev(adapter);
|
|
if (err)
|
|
goto activate_err;
|
|
|
|
return 0;
|
|
|
|
activate_err:
|
|
vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
|
|
vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
|
|
queue_err:
|
|
return err;
|
|
}
|
|
|
|
|
|
static int
|
|
vmxnet3_close(struct net_device *netdev)
|
|
{
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/*
|
|
* Reset_work may be in the middle of resetting the device, wait for its
|
|
* completion.
|
|
*/
|
|
while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
|
|
msleep(1);
|
|
|
|
vmxnet3_quiesce_dev(adapter);
|
|
|
|
vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
|
|
vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
|
|
|
|
clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void
|
|
vmxnet3_force_close(struct vmxnet3_adapter *adapter)
|
|
{
|
|
/*
|
|
* we must clear VMXNET3_STATE_BIT_RESETTING, otherwise
|
|
* vmxnet3_close() will deadlock.
|
|
*/
|
|
BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state));
|
|
|
|
/* we need to enable NAPI, otherwise dev_close will deadlock */
|
|
napi_enable(&adapter->napi);
|
|
dev_close(adapter->netdev);
|
|
}
|
|
|
|
|
|
static int
|
|
vmxnet3_change_mtu(struct net_device *netdev, int new_mtu)
|
|
{
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
int err = 0;
|
|
|
|
if (new_mtu < VMXNET3_MIN_MTU || new_mtu > VMXNET3_MAX_MTU)
|
|
return -EINVAL;
|
|
|
|
if (new_mtu > 1500 && !adapter->jumbo_frame)
|
|
return -EINVAL;
|
|
|
|
netdev->mtu = new_mtu;
|
|
|
|
/*
|
|
* Reset_work may be in the middle of resetting the device, wait for its
|
|
* completion.
|
|
*/
|
|
while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
|
|
msleep(1);
|
|
|
|
if (netif_running(netdev)) {
|
|
vmxnet3_quiesce_dev(adapter);
|
|
vmxnet3_reset_dev(adapter);
|
|
|
|
/* we need to re-create the rx queue based on the new mtu */
|
|
vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
|
|
vmxnet3_adjust_rx_ring_size(adapter);
|
|
adapter->rx_queue.comp_ring.size =
|
|
adapter->rx_queue.rx_ring[0].size +
|
|
adapter->rx_queue.rx_ring[1].size;
|
|
err = vmxnet3_rq_create(&adapter->rx_queue, adapter);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: failed to re-create rx queue,"
|
|
" error %d. Closing it.\n", netdev->name, err);
|
|
goto out;
|
|
}
|
|
|
|
err = vmxnet3_activate_dev(adapter);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: failed to re-activate, error %d. "
|
|
"Closing it\n", netdev->name, err);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
|
|
if (err)
|
|
vmxnet3_force_close(adapter);
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
netdev->features = NETIF_F_SG |
|
|
NETIF_F_HW_CSUM |
|
|
NETIF_F_HW_VLAN_TX |
|
|
NETIF_F_HW_VLAN_RX |
|
|
NETIF_F_HW_VLAN_FILTER |
|
|
NETIF_F_TSO |
|
|
NETIF_F_TSO6 |
|
|
NETIF_F_LRO;
|
|
|
|
printk(KERN_INFO "features: sg csum vlan jf tso tsoIPv6 lro");
|
|
|
|
adapter->rxcsum = true;
|
|
adapter->jumbo_frame = true;
|
|
adapter->lro = true;
|
|
|
|
if (dma64) {
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
printk(" highDMA");
|
|
}
|
|
|
|
netdev->vlan_features = netdev->features;
|
|
printk("\n");
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac)
|
|
{
|
|
u32 tmp;
|
|
|
|
tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
|
|
*(u32 *)mac = tmp;
|
|
|
|
tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
|
|
mac[4] = tmp & 0xff;
|
|
mac[5] = (tmp >> 8) & 0xff;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter)
|
|
{
|
|
u32 cfg;
|
|
|
|
/* intr settings */
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_GET_CONF_INTR);
|
|
cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
|
|
adapter->intr.type = cfg & 0x3;
|
|
adapter->intr.mask_mode = (cfg >> 2) & 0x3;
|
|
|
|
if (adapter->intr.type == VMXNET3_IT_AUTO) {
|
|
int err;
|
|
|
|
#ifdef CONFIG_PCI_MSI
|
|
adapter->intr.msix_entries[0].entry = 0;
|
|
err = pci_enable_msix(adapter->pdev, adapter->intr.msix_entries,
|
|
VMXNET3_LINUX_MAX_MSIX_VECT);
|
|
if (!err) {
|
|
adapter->intr.num_intrs = 1;
|
|
adapter->intr.type = VMXNET3_IT_MSIX;
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
err = pci_enable_msi(adapter->pdev);
|
|
if (!err) {
|
|
adapter->intr.num_intrs = 1;
|
|
adapter->intr.type = VMXNET3_IT_MSI;
|
|
return;
|
|
}
|
|
}
|
|
|
|
adapter->intr.type = VMXNET3_IT_INTX;
|
|
|
|
/* INT-X related setting */
|
|
adapter->intr.num_intrs = 1;
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter)
|
|
{
|
|
if (adapter->intr.type == VMXNET3_IT_MSIX)
|
|
pci_disable_msix(adapter->pdev);
|
|
else if (adapter->intr.type == VMXNET3_IT_MSI)
|
|
pci_disable_msi(adapter->pdev);
|
|
else
|
|
BUG_ON(adapter->intr.type != VMXNET3_IT_INTX);
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_tx_timeout(struct net_device *netdev)
|
|
{
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
adapter->tx_timeout_count++;
|
|
|
|
printk(KERN_ERR "%s: tx hang\n", adapter->netdev->name);
|
|
schedule_work(&adapter->work);
|
|
}
|
|
|
|
|
|
static void
|
|
vmxnet3_reset_work(struct work_struct *data)
|
|
{
|
|
struct vmxnet3_adapter *adapter;
|
|
|
|
adapter = container_of(data, struct vmxnet3_adapter, work);
|
|
|
|
/* if another thread is resetting the device, no need to proceed */
|
|
if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
|
|
return;
|
|
|
|
/* if the device is closed, we must leave it alone */
|
|
if (netif_running(adapter->netdev)) {
|
|
printk(KERN_INFO "%s: resetting\n", adapter->netdev->name);
|
|
vmxnet3_quiesce_dev(adapter);
|
|
vmxnet3_reset_dev(adapter);
|
|
vmxnet3_activate_dev(adapter);
|
|
} else {
|
|
printk(KERN_INFO "%s: already closed\n", adapter->netdev->name);
|
|
}
|
|
|
|
clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
|
|
}
|
|
|
|
|
|
static int __devinit
|
|
vmxnet3_probe_device(struct pci_dev *pdev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
static const struct net_device_ops vmxnet3_netdev_ops = {
|
|
.ndo_open = vmxnet3_open,
|
|
.ndo_stop = vmxnet3_close,
|
|
.ndo_start_xmit = vmxnet3_xmit_frame,
|
|
.ndo_set_mac_address = vmxnet3_set_mac_addr,
|
|
.ndo_change_mtu = vmxnet3_change_mtu,
|
|
.ndo_get_stats = vmxnet3_get_stats,
|
|
.ndo_tx_timeout = vmxnet3_tx_timeout,
|
|
.ndo_set_multicast_list = vmxnet3_set_mc,
|
|
.ndo_vlan_rx_register = vmxnet3_vlan_rx_register,
|
|
.ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid,
|
|
.ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_poll_controller = vmxnet3_netpoll,
|
|
#endif
|
|
};
|
|
int err;
|
|
bool dma64 = false; /* stupid gcc */
|
|
u32 ver;
|
|
struct net_device *netdev;
|
|
struct vmxnet3_adapter *adapter;
|
|
u8 mac[ETH_ALEN];
|
|
|
|
netdev = alloc_etherdev(sizeof(struct vmxnet3_adapter));
|
|
if (!netdev) {
|
|
printk(KERN_ERR "Failed to alloc ethernet device for adapter "
|
|
"%s\n", pci_name(pdev));
|
|
return -ENOMEM;
|
|
}
|
|
|
|
pci_set_drvdata(pdev, netdev);
|
|
adapter = netdev_priv(netdev);
|
|
adapter->netdev = netdev;
|
|
adapter->pdev = pdev;
|
|
|
|
adapter->shared = pci_alloc_consistent(adapter->pdev,
|
|
sizeof(struct Vmxnet3_DriverShared),
|
|
&adapter->shared_pa);
|
|
if (!adapter->shared) {
|
|
printk(KERN_ERR "Failed to allocate memory for %s\n",
|
|
pci_name(pdev));
|
|
err = -ENOMEM;
|
|
goto err_alloc_shared;
|
|
}
|
|
|
|
adapter->tqd_start = pci_alloc_consistent(adapter->pdev,
|
|
sizeof(struct Vmxnet3_TxQueueDesc) +
|
|
sizeof(struct Vmxnet3_RxQueueDesc),
|
|
&adapter->queue_desc_pa);
|
|
|
|
if (!adapter->tqd_start) {
|
|
printk(KERN_ERR "Failed to allocate memory for %s\n",
|
|
pci_name(pdev));
|
|
err = -ENOMEM;
|
|
goto err_alloc_queue_desc;
|
|
}
|
|
adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start
|
|
+ 1);
|
|
|
|
adapter->pm_conf = kmalloc(sizeof(struct Vmxnet3_PMConf), GFP_KERNEL);
|
|
if (adapter->pm_conf == NULL) {
|
|
printk(KERN_ERR "Failed to allocate memory for %s\n",
|
|
pci_name(pdev));
|
|
err = -ENOMEM;
|
|
goto err_alloc_pm;
|
|
}
|
|
|
|
err = vmxnet3_alloc_pci_resources(adapter, &dma64);
|
|
if (err < 0)
|
|
goto err_alloc_pci;
|
|
|
|
ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
|
|
if (ver & 1) {
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_VRRS, 1);
|
|
} else {
|
|
printk(KERN_ERR "Incompatible h/w version (0x%x) for adapter"
|
|
" %s\n", ver, pci_name(pdev));
|
|
err = -EBUSY;
|
|
goto err_ver;
|
|
}
|
|
|
|
ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
|
|
if (ver & 1) {
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1);
|
|
} else {
|
|
printk(KERN_ERR "Incompatible upt version (0x%x) for "
|
|
"adapter %s\n", ver, pci_name(pdev));
|
|
err = -EBUSY;
|
|
goto err_ver;
|
|
}
|
|
|
|
vmxnet3_declare_features(adapter, dma64);
|
|
|
|
adapter->dev_number = atomic_read(&devices_found);
|
|
vmxnet3_alloc_intr_resources(adapter);
|
|
|
|
vmxnet3_read_mac_addr(adapter, mac);
|
|
memcpy(netdev->dev_addr, mac, netdev->addr_len);
|
|
|
|
netdev->netdev_ops = &vmxnet3_netdev_ops;
|
|
netdev->watchdog_timeo = 5 * HZ;
|
|
vmxnet3_set_ethtool_ops(netdev);
|
|
|
|
INIT_WORK(&adapter->work, vmxnet3_reset_work);
|
|
|
|
netif_napi_add(netdev, &adapter->napi, vmxnet3_poll, 64);
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
|
err = register_netdev(netdev);
|
|
|
|
if (err) {
|
|
printk(KERN_ERR "Failed to register adapter %s\n",
|
|
pci_name(pdev));
|
|
goto err_register;
|
|
}
|
|
|
|
set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
|
|
atomic_inc(&devices_found);
|
|
return 0;
|
|
|
|
err_register:
|
|
vmxnet3_free_intr_resources(adapter);
|
|
err_ver:
|
|
vmxnet3_free_pci_resources(adapter);
|
|
err_alloc_pci:
|
|
kfree(adapter->pm_conf);
|
|
err_alloc_pm:
|
|
pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_TxQueueDesc) +
|
|
sizeof(struct Vmxnet3_RxQueueDesc),
|
|
adapter->tqd_start, adapter->queue_desc_pa);
|
|
err_alloc_queue_desc:
|
|
pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared),
|
|
adapter->shared, adapter->shared_pa);
|
|
err_alloc_shared:
|
|
pci_set_drvdata(pdev, NULL);
|
|
free_netdev(netdev);
|
|
return err;
|
|
}
|
|
|
|
|
|
static void __devexit
|
|
vmxnet3_remove_device(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
|
|
flush_scheduled_work();
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
vmxnet3_free_intr_resources(adapter);
|
|
vmxnet3_free_pci_resources(adapter);
|
|
kfree(adapter->pm_conf);
|
|
pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_TxQueueDesc) +
|
|
sizeof(struct Vmxnet3_RxQueueDesc),
|
|
adapter->tqd_start, adapter->queue_desc_pa);
|
|
pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared),
|
|
adapter->shared, adapter->shared_pa);
|
|
free_netdev(netdev);
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int
|
|
vmxnet3_suspend(struct device *device)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(device);
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
struct Vmxnet3_PMConf *pmConf;
|
|
struct ethhdr *ehdr;
|
|
struct arphdr *ahdr;
|
|
u8 *arpreq;
|
|
struct in_device *in_dev;
|
|
struct in_ifaddr *ifa;
|
|
int i = 0;
|
|
|
|
if (!netif_running(netdev))
|
|
return 0;
|
|
|
|
vmxnet3_disable_all_intrs(adapter);
|
|
vmxnet3_free_irqs(adapter);
|
|
vmxnet3_free_intr_resources(adapter);
|
|
|
|
netif_device_detach(netdev);
|
|
netif_stop_queue(netdev);
|
|
|
|
/* Create wake-up filters. */
|
|
pmConf = adapter->pm_conf;
|
|
memset(pmConf, 0, sizeof(*pmConf));
|
|
|
|
if (adapter->wol & WAKE_UCAST) {
|
|
pmConf->filters[i].patternSize = ETH_ALEN;
|
|
pmConf->filters[i].maskSize = 1;
|
|
memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN);
|
|
pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */
|
|
|
|
pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
|
|
i++;
|
|
}
|
|
|
|
if (adapter->wol & WAKE_ARP) {
|
|
in_dev = in_dev_get(netdev);
|
|
if (!in_dev)
|
|
goto skip_arp;
|
|
|
|
ifa = (struct in_ifaddr *)in_dev->ifa_list;
|
|
if (!ifa)
|
|
goto skip_arp;
|
|
|
|
pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/
|
|
sizeof(struct arphdr) + /* ARP header */
|
|
2 * ETH_ALEN + /* 2 Ethernet addresses*/
|
|
2 * sizeof(u32); /*2 IPv4 addresses */
|
|
pmConf->filters[i].maskSize =
|
|
(pmConf->filters[i].patternSize - 1) / 8 + 1;
|
|
|
|
/* ETH_P_ARP in Ethernet header. */
|
|
ehdr = (struct ethhdr *)pmConf->filters[i].pattern;
|
|
ehdr->h_proto = htons(ETH_P_ARP);
|
|
|
|
/* ARPOP_REQUEST in ARP header. */
|
|
ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN];
|
|
ahdr->ar_op = htons(ARPOP_REQUEST);
|
|
arpreq = (u8 *)(ahdr + 1);
|
|
|
|
/* The Unicast IPv4 address in 'tip' field. */
|
|
arpreq += 2 * ETH_ALEN + sizeof(u32);
|
|
*(u32 *)arpreq = ifa->ifa_address;
|
|
|
|
/* The mask for the relevant bits. */
|
|
pmConf->filters[i].mask[0] = 0x00;
|
|
pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */
|
|
pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */
|
|
pmConf->filters[i].mask[3] = 0x00;
|
|
pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */
|
|
pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */
|
|
in_dev_put(in_dev);
|
|
|
|
pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
|
|
i++;
|
|
}
|
|
|
|
skip_arp:
|
|
if (adapter->wol & WAKE_MAGIC)
|
|
pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC;
|
|
|
|
pmConf->numFilters = i;
|
|
|
|
adapter->shared->devRead.pmConfDesc.confVer = 1;
|
|
adapter->shared->devRead.pmConfDesc.confLen = sizeof(*pmConf);
|
|
adapter->shared->devRead.pmConfDesc.confPA = virt_to_phys(pmConf);
|
|
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_UPDATE_PMCFG);
|
|
|
|
pci_save_state(pdev);
|
|
pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND),
|
|
adapter->wol);
|
|
pci_disable_device(pdev);
|
|
pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND));
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int
|
|
vmxnet3_resume(struct device *device)
|
|
{
|
|
int err;
|
|
struct pci_dev *pdev = to_pci_dev(device);
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
|
|
struct Vmxnet3_PMConf *pmConf;
|
|
|
|
if (!netif_running(netdev))
|
|
return 0;
|
|
|
|
/* Destroy wake-up filters. */
|
|
pmConf = adapter->pm_conf;
|
|
memset(pmConf, 0, sizeof(*pmConf));
|
|
|
|
adapter->shared->devRead.pmConfDesc.confVer = 1;
|
|
adapter->shared->devRead.pmConfDesc.confLen = sizeof(*pmConf);
|
|
adapter->shared->devRead.pmConfDesc.confPA = virt_to_phys(pmConf);
|
|
|
|
netif_device_attach(netdev);
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
pci_restore_state(pdev);
|
|
err = pci_enable_device_mem(pdev);
|
|
if (err != 0)
|
|
return err;
|
|
|
|
pci_enable_wake(pdev, PCI_D0, 0);
|
|
|
|
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
|
|
VMXNET3_CMD_UPDATE_PMCFG);
|
|
vmxnet3_alloc_intr_resources(adapter);
|
|
vmxnet3_request_irqs(adapter);
|
|
vmxnet3_enable_all_intrs(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct dev_pm_ops vmxnet3_pm_ops = {
|
|
.suspend = vmxnet3_suspend,
|
|
.resume = vmxnet3_resume,
|
|
};
|
|
#endif
|
|
|
|
static struct pci_driver vmxnet3_driver = {
|
|
.name = vmxnet3_driver_name,
|
|
.id_table = vmxnet3_pciid_table,
|
|
.probe = vmxnet3_probe_device,
|
|
.remove = __devexit_p(vmxnet3_remove_device),
|
|
#ifdef CONFIG_PM
|
|
.driver.pm = &vmxnet3_pm_ops,
|
|
#endif
|
|
};
|
|
|
|
|
|
static int __init
|
|
vmxnet3_init_module(void)
|
|
{
|
|
printk(KERN_INFO "%s - version %s\n", VMXNET3_DRIVER_DESC,
|
|
VMXNET3_DRIVER_VERSION_REPORT);
|
|
return pci_register_driver(&vmxnet3_driver);
|
|
}
|
|
|
|
module_init(vmxnet3_init_module);
|
|
|
|
|
|
static void
|
|
vmxnet3_exit_module(void)
|
|
{
|
|
pci_unregister_driver(&vmxnet3_driver);
|
|
}
|
|
|
|
module_exit(vmxnet3_exit_module);
|
|
|
|
MODULE_AUTHOR("VMware, Inc.");
|
|
MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC);
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING);
|