*
*********************************************************/
-/*
- * vmxnet3.c --
- *
- * Linux driver for VMXNET3 NIC
- * XXX:
- * + invoke request_irq after device is activated
- */
#include "driver-config.h"
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)
#error "vmxnet3 driver is not supported on kernels earlier than 2.6"
#endif
-#include "compat_module.h"
-//#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 9)
-#include <linux/moduleparam.h>
-//#endif
-
-#include "compat_slab.h"
-#include "compat_spinlock.h"
-#include "compat_ioport.h"
-#include "compat_pci.h"
-#include "compat_highmem.h"
-#include "compat_init.h"
-#include "compat_timer.h"
-#include "compat_netdevice.h"
-#include "compat_skbuff.h"
-#include "compat_interrupt.h"
-#include "compat_workqueue.h"
-
-#include <asm/dma.h>
-#include <asm/page.h>
-#include <asm/uaccess.h>
-#include <linux/types.h>
-#include <linux/tcp.h>
-#include <linux/udp.h>
-#include <linux/ip.h>
-#include <linux/ipv6.h>
-#include <linux/in.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/delay.h>
-#include <asm/checksum.h>
-
-#include <linux/if_vlan.h>
-#include <linux/if_arp.h>
-#include <linux/inetdevice.h>
-
-#ifdef CONFIG_COMPAT
-#ifndef HAVE_UNLOCKED_IOCTL
-#include <linux/ioctl32.h>
-#endif
-#endif
-
-#include "vm_basic_types.h"
-#include "vmnet_def.h"
#include "vm_device_version.h"
-#include "vmxnet3_version.h"
#include "vmxnet3_int.h"
#include "vmxnet3_shm.h"
-#ifdef VLAN_GROUP_ARRAY_SPLIT_PARTS
-# define compat_vlan_group_get_device(vlan_grp, vid) vlan_group_get_device(vlan_grp, vid)
-# define compat_vlan_group_set_device(vlan_grp, vid, dev) vlan_group_set_device(vlan_grp, vid, dev)
-#else
-# define compat_vlan_group_get_device(vlan_grp, vid) ((vlan_grp)->vlan_devices[(vid)])
-# define compat_vlan_group_set_device(vlan_grp, vid, dev) ((vlan_grp)->vlan_devices[(vid)] = (dev))
-#endif
-
-
-#ifdef VMXNET3_NAPI
-# ifdef VMX86_DEBUG
-# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI(debug)"
-# else
-# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI"
-# endif
-#else
-# ifdef VMX86_DEBUG
-# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"(debug)"
-# else
-# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING
-# endif
-#endif
-static char vmxnet3_driver_name[] = "vmxnet3";
+char vmxnet3_driver_name[] = "vmxnet3";
#define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver"
static const struct pci_device_id vmxnet3_pciid_table[] = {
- {PCI_DEVICE(PCI_VENDOR_ID_VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)},
- {0}
+ {PCI_DEVICE(PCI_VENDOR_ID_VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)},
+ {0}
};
-static void vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter);
-static int vmxnet3_probe_device(struct pci_dev *pdev, const struct pci_device_id *id);
-static void vmxnet3_remove_device(struct pci_dev *pdev);
-#ifdef CONFIG_PM
-static int vmxnet3_suspend(struct pci_dev *pdev, pm_message_t state);
-static int vmxnet3_resume(struct pci_dev *pdev);
-#endif
-static int vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter);
-#ifdef VMXNET3_NAPI
-static int vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
- struct vmxnet3_adapter *adapter,
- int quota);
-#else
-static int vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
- struct vmxnet3_adapter *adapter);
-#endif
-static inline Bool vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter);
-static inline void vmxnet3_tq_start(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter);
-static inline void vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter);
-static inline void vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter);
+MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table);
-static struct pci_driver vmxnet3_driver = {
- .name = vmxnet3_driver_name,
- .id_table = vmxnet3_pciid_table,
- .probe = vmxnet3_probe_device,
- .remove = vmxnet3_remove_device,
-#ifdef CONFIG_PM
- .suspend = vmxnet3_suspend,
- .resume = vmxnet3_resume,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
+static int disable_lro;
#endif
-};
-static int disable_lro;
-static int devices_found;
+static atomic_t devices_found;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 2)
static unsigned int num_enable_shm;
#endif
#define VMXNET3_SHM_MAX_DEVICES 10
static int enable_shm[VMXNET3_SHM_MAX_DEVICES + 1] =
- { [0 ... VMXNET3_SHM_MAX_DEVICES] = -1 };
+{ [0 ... VMXNET3_SHM_MAX_DEVICES] = -1 };
static char *shm_disclaimer = NULL;
static int correct_shm_disclaimer;
#define VMXNET3_SHM_DISCLAIMER "IReallyWantThisModeIAmAVMwarePartner"
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_enable_intr/vmxnet3_disable_intr --
- *
* Enable/Disable the given intr
- *
- * Result:
- * None
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
*/
static inline void
vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx)
{
- VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0);
+ VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0);
}
static inline void
vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx)
{
- VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1);
+ VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1);
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_enable_all_intrs/vmxnet3_disable_all_intrs--
- *
* Enable/Disable all intrs used by the device
- *
- * Result:
- * None
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
*/
static void
vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter)
{
- int i;
+ int i;
- for (i = 0; i < adapter->intr.num_intrs; i++) {
- vmxnet3_enable_intr(adapter, i);
- }
+ for (i = 0; i < adapter->intr.num_intrs; i++)
+ vmxnet3_enable_intr(adapter, i);
}
static void
vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter)
{
- int i;
+ int i;
- for (i = 0; i < adapter->intr.num_intrs; i++) {
- vmxnet3_disable_intr(adapter, i);
- }
+ for (i = 0; i < adapter->intr.num_intrs; i++)
+ vmxnet3_disable_intr(adapter, i);
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_ack_events --
- *
- * Ack the events we received.
- *
- * Result:
- * None
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
static INLINE void
-vmxnet3_ack_events(struct vmxnet3_adapter *adapter, uint32 events)
+vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events)
{
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events);
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events);
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_check_link --
- *
- * Check link state.
- *
- * Results:
- * None.
- *
- * Side effects:
- * May start or stop the tx queue.
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_check_link(struct vmxnet3_adapter *adapter)
+static inline Bool
+vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
{
- uint32 ret;
-
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
- ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
- adapter->link_speed = ret >> 16;
- if (ret & 1) { /* Link is up. */
- printk(KERN_INFO "%s: NIC Link is Up %d Mbps\n", adapter->netdev->name,
- adapter->link_speed);
- if (!netif_carrier_ok(adapter->netdev)) {
- netif_carrier_on(adapter->netdev);
- }
- vmxnet3_tq_start(&adapter->tx_queue, adapter);
- } else {
- printk(KERN_INFO "%s: NIC Link is Down\n", adapter->netdev->name);
- if (netif_carrier_ok(adapter->netdev)) {
- netif_carrier_off(adapter->netdev);
- }
- vmxnet3_tq_stop(&adapter->tx_queue, adapter);
- }
+ return compat_netif_queue_stopped(adapter->netdev);
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_process_events --
- *
- * process events indicated in ECR
- *
- * Result:
- * None
- *
- * Side-effects:
- * None
*
- *----------------------------------------------------------------------------
+ * Request the stack to start/stop/wake the tq. This only deals with the OS
+ * side, it does NOT handle the device side
*/
-
-static void
-vmxnet3_process_events(struct vmxnet3_adapter *adapter)
+static inline void
+vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
{
- uint32 events = adapter->shared->ecr;
- if (events) {
- vmxnet3_ack_events(adapter, events);
-
- if (events & VMXNET3_ECR_LINK) {
- vmxnet3_check_link(adapter);
- }
- if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
-
- if (adapter->tqd_start->status.stopped) {
- printk(KERN_ERR "%s: tq error 0x%x\n", adapter->netdev->name,
- adapter->tqd_start->status.error);
- }
- if (adapter->rqd_start->status.stopped) {
- printk(KERN_ERR "%s: rq error 0x%x\n", adapter->netdev->name,
- adapter->rqd_start->status.error);
- }
-
- compat_schedule_work(&adapter->work);
- }
- }
+ tq->stopped = FALSE;
+ compat_netif_start_queue(adapter->netdev);
}
-#ifdef VMXNET3_NAPI
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_do_poll --
- *
- * The actual polling function.
- *
- * Results:
- * void
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
static inline void
-vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget,
- int *txd_done, int *rxd_done)
+vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
{
- if (UNLIKELY(adapter->shared->ecr)) {
- vmxnet3_process_events(adapter);
- }
+ tq->stopped = FALSE;
+ compat_netif_wake_queue(adapter->netdev);
+}
- *txd_done = vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
- *rxd_done = vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter, budget);
+
+static inline void
+vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
+{
+ tq->stopped = TRUE;
+ tq->num_stop++;
+ compat_netif_stop_queue(adapter->netdev);
}
-#ifdef VMXNET3_NEW_NAPI
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_poll --
- *
- * new NAPI polling function
- *
- * Result:
- * # of the NAPI credit consumed (# of rx descriptors processed)
- *
- *----------------------------------------------------------------------------
+ * This may start or stop the tx queue.
*/
-static int
-vmxnet3_poll(struct napi_struct *napi, int budget)
+
+static void
+vmxnet3_check_link(struct vmxnet3_adapter *adapter)
{
- struct vmxnet3_adapter *adapter = container_of(napi, struct vmxnet3_adapter, napi);
- int rxd_done, txd_done;
+ u32 ret;
- vmxnet3_do_poll(adapter, budget, &txd_done, &rxd_done);
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
+ ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
+ adapter->link_speed = ret >> 16;
+ if (ret & 1) { /* Link is up. */
+ printk(KERN_INFO "%s: NIC Link is Up %d Mbps\n",
+ adapter->netdev->name, adapter->link_speed);
+ if (!netif_carrier_ok(adapter->netdev))
+ netif_carrier_on(adapter->netdev);
- if (rxd_done < budget) {
- compat_napi_complete(adapter->netdev, napi);
- vmxnet3_enable_intr(adapter, 0);
- }
- return rxd_done;
+ vmxnet3_tq_start(&adapter->tx_queue, adapter);
+ } else {
+ printk(KERN_INFO "%s: NIC Link is Down\n",
+ adapter->netdev->name);
+ if (netif_carrier_ok(adapter->netdev))
+ netif_carrier_off(adapter->netdev);
+
+ vmxnet3_tq_stop(&adapter->tx_queue, adapter);
+ }
}
-#else
+
+
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_poll --
- *
- * NAPI polling function
- *
- * Result:
- * 0: napi is done
- * 1: continue polling
- *
- *----------------------------------------------------------------------------
+ * process events indicated in ECR
*/
-static int
-vmxnet3_poll(struct net_device *poll_dev, int *budget)
+static void
+vmxnet3_process_events(struct vmxnet3_adapter *adapter)
{
- int rxd_done, txd_done, quota;
- struct vmxnet3_adapter *adapter = netdev_priv(poll_dev);
+ u32 events = adapter->shared->ecr;
+ if (!events)
+ return;
- quota = min(*budget, poll_dev->quota);
+ vmxnet3_ack_events(adapter, events);
- vmxnet3_do_poll(adapter, quota, &txd_done, &rxd_done);
+ /* Check if link state has changed */
+ if (events & VMXNET3_ECR_LINK)
+ vmxnet3_check_link(adapter);
- *budget -= rxd_done;
- poll_dev->quota -= rxd_done;
+ /* Check if there is an error on xmit/recv queues */
+ if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_GET_QUEUE_STATUS);
- if (rxd_done < quota) {
- compat_napi_complete(poll_dev, unused);
- vmxnet3_enable_intr(adapter, 0);
- return 0;
- }
+ if (adapter->tqd_start->status.stopped) {
+ printk(KERN_ERR "%s: tq error 0x%x\n",
+ adapter->netdev->name,
+ adapter->tqd_start->status.error);
+ }
+ if (adapter->rqd_start->status.stopped) {
+ printk(KERN_ERR "%s: rq error 0x%x\n",
+ adapter->netdev->name,
+ adapter->rqd_start->status.error);
+ }
- return 1; /* not done */
+ compat_schedule_work(&adapter->work);
+ }
+}
+
+
+static void
+vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi,
+ struct pci_dev *pdev)
+{
+ if (tbi->map_type == VMXNET3_MAP_SINGLE)
+ pci_unmap_single(pdev, tbi->dma_addr, tbi->len,
+ PCI_DMA_TODEVICE);
+ else if (tbi->map_type == VMXNET3_MAP_PAGE)
+ pci_unmap_page(pdev, tbi->dma_addr, tbi->len,
+ PCI_DMA_TODEVICE);
+ else
+ BUG_ON(tbi->map_type != VMXNET3_MAP_NONE);
+
+ tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */
}
-#endif
-#endif
/*
- *----------------------------------------------------------------------------
+ * Returns # of tx descs that this pkt used
*
- * vmxnet3_intr --
- *
- * vmxnet3 intr handler, the same version for all intr types
- *
- * Result:
- * whether or not the intr is handled
- *
- *----------------------------------------------------------------------------
+ * Side-effects:
+ * 1. mappings are freed
+ * 2. buf_info[] are updated
+ * 3. tx_ring.{avail, next2comp} are updated.
*/
-static compat_irqreturn_t
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
-vmxnet3_intr(int irq, void *dev_id, struct pt_regs * regs)
-#else
-vmxnet3_intr(int irq, void *dev_id)
-#endif
+static int
+vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq,
+ struct pci_dev *pdev, struct vmxnet3_adapter *adapter)
{
- struct net_device *dev = dev_id;
- struct vmxnet3_adapter *adapter = netdev_priv(dev);
+ struct sk_buff *skb;
+ int entries = 0;
- if (UNLIKELY(adapter->intr.type == VMXNET3_IT_INTX)) {
- uint32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
- if (UNLIKELY(icr == 0)) {
- /* not ours */
- return COMPAT_IRQ_NONE;
- }
- }
+ /* no out of order completion */
+ BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp);
+ BUG_ON(tq->tx_ring.base[eop_idx].txd.eop != 1);
-#ifdef VMXNET3_NAPI
- /* disable intr if needed */
- if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) {
- vmxnet3_disable_intr(adapter, 0);
- }
+ dev_dbg(&adapter->pdev->dev, "tx complete [%u %u]\n",
+ tq->tx_ring.next2comp, eop_idx);
+ skb = tq->buf_info[eop_idx].skb;
+ BUG_ON(skb == NULL);
+ tq->buf_info[eop_idx].skb = NULL;
- compat_napi_schedule(dev, &adapter->napi);
+ VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size);
-#else
- vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
- vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter);
- if (UNLIKELY(adapter->shared->ecr)) {
- vmxnet3_process_events(adapter);
- }
- vmxnet3_enable_intr(adapter, 0);
-#endif
+ while (tq->tx_ring.next2comp != eop_idx) {
+ vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp,
+ pdev);
- return COMPAT_IRQ_HANDLED;
+ /* update next2comp w/o tx_lock. Since we are marking more,
+ * instead of less, tx ring entries avail, the worst case is
+ * that the tx routine incorrectly re-queues a pkt due to
+ * insufficient tx ring entries.
+ */
+ vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
+ entries++;
+ }
+
+ vmxnet3_dev_kfree_skb_any(adapter, skb);
+ return entries;
}
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_netpoll --
- *
- * netpoll callback.
- *
- * Results:
- * None
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_netpoll(struct net_device *netdev)
+
+static int
+vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- int irq;
+ int completed = 0;
+ union Vmxnet3_GenericDesc *gdesc;
-#ifdef CONFIG_PCI_MSI
- if (adapter->intr.type == VMXNET3_IT_MSIX) {
- irq = adapter->intr.msix_entries[0].vector;
- } else
-#endif
- {
- irq = adapter->pdev->irq;
- }
+ gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
+ while (gdesc->tcd.gen == tq->comp_ring.gen) {
+ completed += vmxnet3_unmap_pkt(gdesc->tcd.txdIdx, tq,
+ adapter->pdev, adapter);
- disable_irq(irq);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
- vmxnet3_intr(irq, netdev, NULL);
-#else
- vmxnet3_intr(irq, netdev);
-#endif
- enable_irq(irq);
+ vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring);
+ gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
+ }
+
+ if (completed) {
+ spin_lock(&tq->tx_lock);
+ if (unlikely(vmxnet3_tq_stopped(tq, adapter) &&
+ vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) >
+ VMXNET3_WAKE_QUEUE_THRESHOLD(tq) &&
+ compat_netif_carrier_ok(adapter->netdev))) {
+ vmxnet3_tq_wake(tq, adapter);
+ }
+ spin_unlock(&tq->tx_lock);
+ }
+ return completed;
}
-#endif
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_request_irqs --
- *
- * based on adapter->intr.type, register the intr handler
- *
- * Result:
- * 0 or error code
- *
- * Side-effects:
- * 1. event_intr_idx and intr_idx for different comp rings are updated
- *
- *----------------------------------------------------------------------------
- */
-static int
-vmxnet3_request_irqs(struct vmxnet3_adapter *adapter)
+static void
+vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter)
{
- int err;
+ while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) {
+ struct vmxnet3_tx_buf_info *tbi;
+ union Vmxnet3_GenericDesc *gdesc;
-#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);
- if (err) {
- printk(KERN_ERR "Failed to request irq for MSIX, %s, error %d\n",
- adapter->netdev->name, err);
- }
- } else if (adapter->intr.type == VMXNET3_IT_MSI) {
- err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0,
- adapter->netdev->name, adapter->netdev);
- if (err) {
- printk(KERN_ERR "Failed to request irq for MSI, %s, error %d\n",
- adapter->netdev->name, err);
- }
- } else {
-#endif
- VMXNET3_ASSERT(adapter->intr.type == VMXNET3_IT_INTX);
-
- err = request_irq(adapter->pdev->irq, vmxnet3_intr, COMPAT_IRQF_SHARED,
- adapter->netdev->name, adapter->netdev);
- if (err) {
- printk(KERN_ERR "Failed to request irq, %s, error %d\n",
- adapter->netdev->name, err);
- }
-#ifdef CONFIG_PCI_MSI
- }
+ tbi = tq->buf_info + tq->tx_ring.next2comp;
+ gdesc = tq->tx_ring.base + tq->tx_ring.next2comp;
+
+ vmxnet3_unmap_tx_buf(tbi, adapter->pdev);
+ if (tbi->skb) {
+ vmxnet3_dev_kfree_skb_any(adapter, tbi->skb);
+ tbi->skb = NULL;
+ }
+ vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
+ }
+
+ /* sanity check */
+#ifdef VMX86_DEBUG
+ {
+ /* verify all buffers are indeed unmapped and freed */
+ int i;
+ for (i = 0; i < tq->tx_ring.size; i++) {
+ BUG_ON(tq->buf_info[i].skb != NULL ||
+ tq->buf_info[i].map_type != VMXNET3_MAP_NONE);
+ }
+ }
#endif
- 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;
- }
+ tq->tx_ring.gen = VMXNET3_INIT_GEN;
+ tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
+
+ tq->comp_ring.gen = VMXNET3_INIT_GEN;
+ tq->comp_ring.next2proc = 0;
+}
- /* 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);
- }
+/*
+ * free rings and buf_info for the tx queue. There must be no pending pkt
+ * in the tx ring. the .base fields of all rings and buf_info will be
+ * set to NULL
+ */
- return err;
+void
+vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter)
+{
+ if (tq->tx_ring.base) {
+ pci_free_consistent(adapter->pdev, tq->tx_ring.size *
+ sizeof(struct Vmxnet3_TxDesc),
+ tq->tx_ring.base, tq->tx_ring.basePA);
+ tq->tx_ring.base = NULL;
+ }
+ if (tq->data_ring.base) {
+ pci_free_consistent(adapter->pdev, tq->data_ring.size *
+ sizeof(struct Vmxnet3_TxDataDesc),
+ tq->data_ring.base, tq->data_ring.basePA);
+ tq->data_ring.base = NULL;
+ }
+ if (tq->comp_ring.base) {
+ pci_free_consistent(adapter->pdev, tq->comp_ring.size *
+ sizeof(struct Vmxnet3_TxCompDesc),
+ tq->comp_ring.base, tq->comp_ring.basePA);
+ tq->comp_ring.base = NULL;
+ }
+
+ if (tq->buf_info) {
+ kfree(tq->buf_info);
+ tq->buf_info = NULL;
+ }
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_free_irqs --
- *
- * free IRQs allocated
- *
- * Result:
- * None
- *
+ * reset all internal states and rings for a tx queue
* Side-effects:
- * None
- *----------------------------------------------------------------------------
+ * 1. contents of the rings are reset to 0
+ * 2. indices and gen of rings are reset
+ * 3. bookkeeping data is reset
*/
-
static void
-vmxnet3_free_irqs(struct vmxnet3_adapter *adapter)
+vmxnet3_tq_init(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter)
{
- VMXNET3_ASSERT(adapter->intr.type != VMXNET3_IT_AUTO &&
- adapter->intr.num_intrs > 0);
+ int i;
- 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;
- }
- case VMXNET3_IT_MSI:
- free_irq(adapter->pdev->irq, adapter->netdev);
- break;
-#endif
- case VMXNET3_IT_INTX:
- free_irq(adapter->pdev->irq, adapter->netdev);
- break;
- default:
- VMXNET3_ASSERT(FALSE);
- }
+ /* reset the tx ring contents to 0 and reset the tx ring states */
+ memset(tq->tx_ring.base, 0,
+ tq->tx_ring.size * sizeof(struct Vmxnet3_TxDesc));
+ tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
+ tq->tx_ring.gen = VMXNET3_INIT_GEN;
+
+ memset(tq->data_ring.base, 0,
+ tq->data_ring.size * sizeof(struct Vmxnet3_TxDataDesc));
+
+ /* reset the tx comp ring contents to 0 and reset comp ring states */
+ memset(tq->comp_ring.base, 0,
+ tq->comp_ring.size * sizeof(struct Vmxnet3_TxCompDesc));
+ tq->comp_ring.next2proc = 0;
+ tq->comp_ring.gen = VMXNET3_INIT_GEN;
+
+ /* reset the bookkeeping data */
+ memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size);
+ for (i = 0; i < tq->tx_ring.size; i++)
+ tq->buf_info[i].map_type = VMXNET3_MAP_NONE;
+
+ /* stats are not reset */
}
-static inline Bool
-vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter)
-{
- return compat_netif_queue_stopped(adapter->netdev);
+/*
+ * allocate and initialize rings for the tx queue, also allocate and
+ * initialize buf_info. Returns 0 on success, negative errno on failure.
+ */
+static int
+vmxnet3_tq_create(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter)
+{
+ BUG_ON(tq->tx_ring.size <= 0 ||
+ tq->data_ring.size != tq->tx_ring.size);
+ BUG_ON((tq->tx_ring.size & VMXNET3_RING_SIZE_MASK) != 0);
+ BUG_ON(tq->tx_ring.base || tq->data_ring.base || tq->comp_ring.base ||
+ tq->buf_info);
+
+ tq->tx_ring.base = pci_alloc_consistent(adapter->pdev,
+ tq->tx_ring.size * sizeof(struct Vmxnet3_TxDesc),
+ &tq->tx_ring.basePA);
+ if (!tq->tx_ring.base) {
+ printk(KERN_ERR "%s: failed to allocate tx ring\n",
+ adapter->netdev->name);
+ goto err;
+ }
+
+ tq->data_ring.base = pci_alloc_consistent(adapter->pdev,
+ tq->data_ring.size *
+ sizeof(struct Vmxnet3_TxDataDesc),
+ &tq->data_ring.basePA);
+ if (!tq->data_ring.base) {
+ printk(KERN_ERR "%s: failed to allocate data ring\n",
+ adapter->netdev->name);
+ goto err;
+ }
+
+ tq->comp_ring.base = pci_alloc_consistent(adapter->pdev,
+ tq->comp_ring.size *
+ sizeof(struct Vmxnet3_TxCompDesc),
+ &tq->comp_ring.basePA);
+ if (!tq->comp_ring.base) {
+ printk(KERN_ERR "%s: failed to allocate tx comp ring\n",
+ adapter->netdev->name);
+ goto err;
+ }
+
+ tq->buf_info = kcalloc(tq->tx_ring.size, sizeof(tq->buf_info[0]),
+ GFP_KERNEL);
+ if (!tq->buf_info) {
+ printk(KERN_ERR "%s: failed to allocate tx bufinfo\n",
+ adapter->netdev->name);
+ goto err;
+ }
+
+ return 0;
+
+err:
+ vmxnet3_tq_destroy(tq, adapter);
+ return -ENOMEM;
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_tq_start/stop/wake --
- *
- * Request the stack to start/stop/wake the tq. This only deals with the OS side,
- * it does NOT handle the device side
- *
- * Result:
- * None
+ * starting from ring->next2fill, allocate rx buffers for the given ring
+ * of the rx queue and update the rx desc. stop after @num_to_alloc buffers
+ * are allocated or allocation fails. Returns # of buffers allocated
*
* Side-effects:
- * None
- *----------------------------------------------------------------------------
+ * 1. rx descs are updated
+ * 2. ring->{gen, next2fill} are updated
+ * 3. uncommitted[ring_idx] is incremented
*/
-static inline void
-vmxnet3_tq_start(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter)
-{
- tq->stopped = FALSE;
- compat_netif_start_queue(adapter->netdev);
-}
+static int
+vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx,
+ int num_to_alloc, struct vmxnet3_adapter *adapter)
+{
+ int num_allocated = 0;
+ struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx];
+ struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx];
+ u32 val;
+
+ while (num_allocated < num_to_alloc) {
+ struct vmxnet3_rx_buf_info *rbi;
+ union Vmxnet3_GenericDesc *gd;
+
+ rbi = rbi_base + ring->next2fill;
+ gd = ring->base + ring->next2fill;
+
+ if (rbi->buf_type == VMXNET3_RX_BUF_SKB) {
+ if (rbi->skb == NULL) {
+ rbi->skb = vmxnet3_dev_alloc_skb(adapter,
+ rbi->len + COMPAT_NET_IP_ALIGN);
+ if (unlikely(rbi->skb == NULL)) {
+ rq->stats.rx_buf_alloc_failure++;
+ break;
+ }
+ rbi->skb->dev = adapter->netdev;
+
+ if (!adapter->is_shm)
+ skb_reserve(rbi->skb, NET_IP_ALIGN);
+ rbi->dma_addr = vmxnet3_map_single(
+ adapter, rbi->skb, 0,
+ rbi->len, PCI_DMA_FROMDEVICE);
+ } else {
+ /* rx buffer skipped by the device */
+ }
+ val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT;
+ } else {
+ BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE ||
+ rbi->len != PAGE_SIZE);
+
+ if (rbi->page == NULL) {
+ rbi->page = vmxnet3_alloc_page(adapter);
+ if (unlikely(rbi->page == NULL)) {
+ rq->stats.rx_buf_alloc_failure++;
+ break;
+ }
+ rbi->dma_addr = vmxnet3_map_page(adapter,
+ rbi->page, 0, PAGE_SIZE,
+ PCI_DMA_FROMDEVICE);
+ } else {
+ /* rx buffers skipped by the device */
+ }
+ val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT;
+ }
+
+ BUG_ON(rbi->dma_addr == 0);
+ gd->rxd.addr = rbi->dma_addr;
+ wmb();
+ 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->pdev->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;
+}
+
+
+/*
+ * It assumes the skb still has space to accommodate the frag. It only
+ * increments skb->data_len
+ */
-static inline void
-vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter)
+static void
+vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd,
+ struct vmxnet3_rx_buf_info *rbi)
{
- tq->stopped = FALSE;
- compat_netif_wake_queue(adapter->netdev);
-}
+ struct skb_frag_struct *frag = skb_shinfo(skb)->frags +
+ skb_shinfo(skb)->nr_frags;
+ BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS);
-static inline void
-vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter)
-{
- tq->stopped = TRUE;
- tq->num_stop++;
- compat_netif_stop_queue(adapter->netdev);
+ frag->page = rbi->page;
+ frag->page_offset = 0;
+ frag->size = rcd->len;
+ skb->data_len += frag->size;
+ skb_shinfo(skb)->nr_frags++;
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_map_pkt --
- *
- * map the tx buffer and set up ONLY TXD.{addr, len, gen} based on the mapping.
- * It sets the other fields of the descriptors to 0.
- *
- * Result:
- * None
- *
- * Side-effects:
+ * Map the tx buffer and set up ONLY TXD.{addr, len, gen} based on the mapping.
+ * It sets the other fields of the descriptors to 0.
+ * Side Effects :
* 1. the corresponding buf_info entries are upated,
* 2. ring indices are advanced
- *
- *----------------------------------------------------------------------------
*/
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)
-{
- uint32 dw2, len;
- unsigned long buf_offset;
- int i;
- Vmxnet3_GenericDesc *gdesc;
- struct vmxnet3_tx_buf_info *tbi = NULL;
-
- VMXNET3_ASSERT(ctx->copy_size <= vmxnet3_skb_headlen(adapter, skb));
+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;
- /* 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 */
- 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) {
+ BUG_ON(ctx->sop_txd->txd.gen == tq->tx_ring.gen);
- /* no need to map the buffer if headers are copied */
- if (ctx->copy_size) {
- VMXNET3_ASSERT(ctx->sop_txd->txd.gen != tq->tx_ring.gen);
+ ctx->sop_txd->txd.addr = tq->data_ring.basePA +
+ tq->tx_ring.next2fill *
+ sizeof(Vmxnet3_TxDataDesc);
+ ctx->sop_txd->dword[2] = dw2 | ctx->copy_size;
+ ctx->sop_txd->dword[3] = 0;
- ctx->sop_txd->txd.addr = tq->data_ring.basePA +
- tq->tx_ring.next2fill * sizeof(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;
- tbi = tq->buf_info + tq->tx_ring.next2fill;
- tbi->map_type = VMXNET3_MAP_NONE;
+ dev_dbg(&adapter->pdev->dev, "txd[%u]: 0x%"FMT64"x 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);
- VMXNET3_LOG("txd[%u]: 0x%"FMT64"x 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;
+ }
- /* 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 = vmxnet3_skb_headlen(adapter, skb) - ctx->copy_size;
+ buf_offset = ctx->copy_size;
+ while (len) {
+ u32 buf_size;
- /* linear part can use multiple tx desc if it's big */
- len = vmxnet3_skb_headlen(adapter, skb) - ctx->copy_size;
- buf_offset = ctx->copy_size;
- while (len) {
- uint32 buf_size;
+ buf_size = len > VMXNET3_MAX_TX_BUF_SIZE ?
+ VMXNET3_MAX_TX_BUF_SIZE : len;
- 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 = vmxnet3_map_single(adapter, skb, buf_offset,
+ buf_size, PCI_DMA_TODEVICE);
- tbi = tq->buf_info + tq->tx_ring.next2fill;
- tbi->map_type = VMXNET3_MAP_SINGLE;
- tbi->dma_addr = vmxnet3_map_single(adapter, skb, buf_offset,
- buf_size, PCI_DMA_TODEVICE);
+ tbi->len = buf_size; /* this automatically convert 2^14 to 0 */
- 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 = tq->tx_ring.base + tq->tx_ring.next2fill;
- VMXNET3_ASSERT(gdesc->txd.gen != tq->tx_ring.gen);
+ gdesc->txd.addr = tbi->dma_addr;
+ gdesc->dword[2] = dw2 | buf_size;
+ gdesc->dword[3] = 0;
- gdesc->txd.addr = tbi->dma_addr;
- gdesc->dword[2] = dw2 | buf_size;
- gdesc->dword[3] = 0;
+ dev_dbg(&adapter->pdev->dev, "txd[%u]: 0x%"FMT64"x 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;
- VMXNET3_LOG("txd[%u]: 0x%"FMT64"x 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;
- len -= buf_size;
- buf_offset += buf_size;
+ if (adapter->is_shm) {
+ /*
+ * The linear region of the skb is never larger than a page, so
+ * it always fits into one descriptor.
+ */
+ BUG_ON(len != 0);
+ }
+ }
- if (adapter->is_shm) {
- /*
- * The linear region of the skb is never larger than a page, so
- * it always fits into one descriptor.
- */
- VMXNET3_ASSERT(len == 0);
- }
- }
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
- 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 = vmxnet3_map_page(adapter, frag->page,
+ frag->page_offset, frag->size,
+ PCI_DMA_TODEVICE);
- tbi = tq->buf_info + tq->tx_ring.next2fill;
- tbi->map_type = VMXNET3_MAP_PAGE;
- tbi->dma_addr = vmxnet3_map_page(adapter, frag->page,
- frag->page_offset,
- frag->size, PCI_DMA_TODEVICE);
+ tbi->len = frag->size;
- tbi->len = frag->size;
+ gdesc = tq->tx_ring.base + tq->tx_ring.next2fill;
+ BUG_ON(gdesc->txd.gen == tq->tx_ring.gen);
- gdesc = tq->tx_ring.base + tq->tx_ring.next2fill;
- VMXNET3_ASSERT(gdesc->txd.gen != tq->tx_ring.gen);
+ gdesc->txd.addr = tbi->dma_addr;
+ gdesc->dword[2] = dw2 | frag->size;
+ gdesc->dword[3] = 0;
- gdesc->txd.addr = tbi->dma_addr;
- gdesc->dword[2] = dw2 | frag->size;
- gdesc->dword[3] = 0;
+ dev_dbg(&adapter->pdev->dev, "txd[%u]: 0x%"FMT64"x %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;
+ }
- VMXNET3_LOG("txd[%u]: %"FMT64"u %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;
- 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;
+ /* set the last buf_info for the pkt */
+ tbi->skb = skb;
+ tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base;
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_parse_and_copy_hdr --
- *
* 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
+ * 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
*
* The implementation works only when h/w vlan insertion is used, see PR
* 171928
* 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)
-{
- Vmxnet3_TxDataDesc *tdd;
-
- if (ctx->mss) {
- ctx->eth_ip_hdr_size = compat_skb_transport_offset(skb);
- ctx->l4_hdr_size = compat_skb_tcp_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 == VM_TX_CHECKSUM_PARTIAL) {
- ctx->eth_ip_hdr_size = compat_skb_transport_offset(skb);
-
- if (ctx->ipv4) {
- if (compat_skb_ip_header(skb)->protocol == IPPROTO_TCP) {
- pull_size = ctx->eth_ip_hdr_size + sizeof(struct tcphdr);
-
- if (UNLIKELY(!compat_pskb_may_pull(skb, pull_size))) {
- goto err;
- }
- ctx->l4_hdr_size = compat_skb_tcp_header(skb)->doff * 4;
- } else if (compat_skb_ip_header(skb)->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,
- vmxnet3_skb_headlen(adapter, skb));
- }
-
- if (!adapter->is_shm) {
- /* make sure headers are accessible directly */
- if (UNLIKELY(!compat_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;
- VMXNET3_ASSERT(ctx->copy_size <= vmxnet3_skb_headlen(adapter, skb));
-
- if (!adapter->is_shm) {
- memcpy(tdd->data, skb->data, ctx->copy_size);
- } else {
- void *virt = kmap(VMXNET3_SHM_IDX2PAGE(adapter->shm, VMXNET3_SHM_SKB_GETIDX(skb)));
- memcpy(tdd->data,
- virt,
- ctx->copy_size);
- kunmap(VMXNET3_SHM_IDX2PAGE(adapter->shm, VMXNET3_SHM_SKB_GETIDX(skb)));
- }
- VMXNET3_LOG("copy %u bytes to dataRing[%u]\n",
- ctx->copy_size, tq->tx_ring.next2fill);
- return 1;
+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 = compat_skb_transport_offset(skb);
+ ctx->l4_hdr_size = compat_skb_tcp_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 == VM_TX_CHECKSUM_PARTIAL) {
+ ctx->eth_ip_hdr_size = compat_skb_transport_offset(skb);
+
+ if (ctx->ipv4) {
+ struct iphdr *iph = (struct iphdr *)
+ compat_skb_ip_header(skb);
+ if (iph->protocol == IPPROTO_TCP) {
+ pull_size = ctx->eth_ip_hdr_size +
+ sizeof(struct tcphdr);
+
+ if (unlikely(!compat_pskb_may_pull(skb,
+ pull_size))) {
+ goto err;
+ }
+ ctx->l4_hdr_size =
+ compat_skb_tcp_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
+ , vmxnet3_skb_headlen(adapter, skb));
+ }
+
+ if(!adapter->is_shm) {
+ /* make sure headers are accessible directly */
+ if (unlikely(!compat_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;
+ BUG_ON(ctx->copy_size > vmxnet3_skb_headlen(adapter, skb));
+
+ if (!adapter->is_shm) {
+ memcpy(tdd->data, skb->data, ctx->copy_size);
+ } else {
+ void *virt = kmap(VMXNET3_SHM_IDX2PAGE(adapter->shm,
+ VMXNET3_SHM_SKB_GETIDX(skb)));
+ memcpy(tdd->data, virt, ctx->copy_size);
+ kunmap(VMXNET3_SHM_IDX2PAGE(adapter->shm,
+ VMXNET3_SHM_SKB_GETIDX(skb)));
+ }
+
+ dev_dbg(&adapter->pdev->dev, "copy %u bytes to dataRing[%u]\n",
+ ctx->copy_size, tq->tx_ring.next2fill);
+ return 1;
err:
- return -1;
+ return -1;
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_prepare_tso --
- *
- * Fix pkt headers for tso
- *
- * Result:
- * None
- *
- * Side-effects:
- * ip hdr and tcp hdr are changed
- *
- *----------------------------------------------------------------------------
+ * Fix pkt headers for tso. ip hdr and tcp hdr are changed
*/
static void
-vmxnet3_prepare_tso(struct sk_buff *skb,
- struct vmxnet3_tx_ctx *ctx)
-{
- if (ctx->ipv4) {
- struct iphdr *iph = compat_skb_ip_header(skb);
- iph->check = 0;
- compat_skb_tcp_header(skb)->check = ~csum_tcpudp_magic(iph->saddr,
- iph->daddr,
- 0,
- IPPROTO_TCP,
- 0);
+vmxnet3_prepare_tso(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx)
+{
+ struct tcphdr *tcph = compat_skb_tcp_header(skb);
+ if (ctx->ipv4) {
+ struct iphdr *iph = compat_skb_ip_header(skb);
+ iph->check = 0;
+ tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0,
+ IPPROTO_TCP, 0);
#ifdef NETIF_F_TSO6
- } else {
- struct ipv6hdr *iph = (struct ipv6hdr*)compat_skb_network_header(skb);
- compat_skb_tcp_header(skb)->check = ~csum_ipv6_magic(&iph->saddr,
- &iph->daddr,
- 0,
- IPPROTO_TCP,
- 0);
+ } else {
+ struct ipv6hdr *iph = (struct ipv6hdr *)
+ compat_skb_network_header(skb);
+ tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0,
+ IPPROTO_TCP, 0);
#endif
- }
+ }
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_tq_xmit --
- *
* transmit a pkt thru a given tq
*
* Result:
* 1. tx ring may be changed
* 2. tq stats may be updated accordingly
* 3. shared->txNumDeferred may be updated
- *----------------------------------------------------------------------------
*/
int
vmxnet3_tq_xmit(struct sk_buff *skb,
- struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter,
- struct net_device *netdev)
-{
- int ret;
- uint32 count;
- unsigned long flags;
- struct vmxnet3_tx_ctx ctx;
- Vmxnet3_GenericDesc *gdesc;
-
- /* conservatively estimate # of descriptors to use */
- count = VMXNET3_TXD_NEEDED(vmxnet3_skb_headlen(adapter, skb)) +
- skb_shinfo(skb)->nr_frags + 1;
-
- ctx.ipv4 = (skb->protocol == __constant_ntohs(ETH_P_IP));
-
- ctx.mss = compat_skb_mss(skb);
- if (ctx.mss) {
- if (compat_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)) {
- if (UNLIKELY(adapter->is_shm)) {
- VMXNET3_ASSERT(count <= VMXNET3_MAX_TXD_PER_PKT_SHM);
- if (count > VMXNET3_MAX_TXD_PER_PKT_SHM) {
- tq->stats.drop_too_many_frags++;
- goto drop_pkt;
- }
- } else {
- /* non-tso pkts must not use more than VMXNET3_MAX_TXD_PER_PKT entries */
- if (compat_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(vmxnet3_skb_headlen(adapter, skb)) + 1;
- }
- }
- }
-
- ret = vmxnet3_parse_and_copy_hdr(skb, tq, &ctx, adapter);
- if (ret >= 0) {
- VMXNET3_ASSERT(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 == VM_TX_CHECKSUM_PARTIAL) {
- if (UNLIKELY(ctx.eth_ip_hdr_size + compat_skb_csum_offset(skb) >
- 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++;
- VMXNET3_LOG("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 COMPAT_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 == VM_TX_CHECKSUM_PARTIAL) {
- gdesc->txd.hlen = ctx.eth_ip_hdr_size;
- gdesc->txd.om = VMXNET3_OM_CSUM;
- gdesc->txd.msscof = ctx.eth_ip_hdr_size + compat_skb_csum_offset(skb);
- } 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;
- VMXNET3_LOG("txd[%u]: SOP 0x%"FMT64"x 0x%x 0x%x\n",
- (uint32)((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 COMPAT_NETDEV_TX_OK;
+ 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(vmxnet3_skb_headlen(adapter, skb)) +
+ skb_shinfo(skb)->nr_frags + 1;
+
+ ctx.ipv4 = (skb->protocol == __constant_ntohs(ETH_P_IP));
+
+ ctx.mss = compat_skb_mss(skb);
+ if (ctx.mss) {
+ if (compat_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)) {
+ if (unlikely(adapter->is_shm)) {
+ BUG_ON(count > VMXNET3_MAX_TXD_PER_PKT_SHM);
+ if (count > VMXNET3_MAX_TXD_PER_PKT_SHM) {
+ tq->stats.drop_too_many_frags++;
+ goto drop_pkt;
+ }
+ } else {
+ /* non-tso pkts must not use more than
+ * VMXNET3_MAX_TXD_PER_PKT entries
+ */
+ if (compat_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(vmxnet3_skb_headlen(
+ adapter, 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 == VM_TX_CHECKSUM_PARTIAL) {
+ if (unlikely(ctx.eth_ip_hdr_size +
+ compat_skb_csum_offset(skb) >
+ 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->pdev->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 COMPAT_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 == VM_TX_CHECKSUM_PARTIAL) {
+ gdesc->txd.hlen = ctx.eth_ip_hdr_size;
+ gdesc->txd.om = VMXNET3_OM_CSUM;
+ gdesc->txd.msscof = ctx.eth_ip_hdr_size +
+ compat_skb_csum_offset(skb);
+ } 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->pdev->dev, "txd[%u]: SOP 0x%"FMT64"x 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 COMPAT_NETDEV_TX_OK;
hdr_too_big:
- tq->stats.drop_oversized_hdr++;
+ tq->stats.drop_oversized_hdr++;
drop_pkt:
- tq->stats.drop_total++;
- vmxnet3_dev_kfree_skb(adapter, skb);
- return COMPAT_NETDEV_TX_OK;
+ tq->stats.drop_total++;
+ vmxnet3_dev_kfree_skb(adapter, skb);
+ return COMPAT_NETDEV_TX_OK;
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_xmit_frame --
- *
- * called by the stack to tx a pkt
- *
- * Result:
- * COMPAT_NETDEV_TX_OK if the pkt is sent or dropped
- * COMPAT_NETDEV_TX_BUSY if the pkt has to be requeued
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
static int
+#else
+static netdev_tx_t
+#endif
vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
-
- if (adapter->is_shm) {
- return vmxnet3_shm_start_tx(skb, netdev);
- }
-
- struct vmxnet3_tx_queue *tq = &adapter->tx_queue;
+ struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
+ if (adapter->is_shm)
+ return vmxnet3_shm_start_tx(skb, netdev);
+ struct vmxnet3_tx_queue *tq = &adapter->tx_queue;
- return vmxnet3_tq_xmit(skb, tq, adapter, netdev);
+ return vmxnet3_tq_xmit(skb, tq, adapter, netdev);
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_unmap_tx_buf --
- *
- * unmap, if necessay, the given tx buffer
- *
- * Result:
- * None
- *
- * Side-effects:
- * 1. tbi->map_type is reset to VMXNET3_MAP_NONE
- *
- *----------------------------------------------------------------------------
- */
-
-static inline void
-vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi,
- struct pci_dev *pdev)
-{
- if (tbi->map_type == VMXNET3_MAP_SINGLE) {
- pci_unmap_single(pdev,
- tbi->dma_addr,
- tbi->len,
- PCI_DMA_TODEVICE);
- } else if (tbi->map_type == VMXNET3_MAP_PAGE) {
- pci_unmap_page(pdev,
- tbi->dma_addr,
- tbi->len,
- PCI_DMA_TODEVICE);
- } else {
- VMXNET3_ASSERT(tbi->map_type == VMXNET3_MAP_NONE);
- }
- tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_unmap_pkt --
- *
- * handle tx completion for a pkt. Basically undo vmxnet3_map_pkt().
- * @eop_idx is the index of the eop desc in the tx ring for the pkt
- *
- * Result:
- * # of tx descs that this pkt used
- *
- * Side-effects:
- * 1. mappings are freed
- * 2. buf_info[] are updated
- * 3. tx_ring.{avail, next2comp} are updated.
- *
- *----------------------------------------------------------------------------
- */
-
-static int
-vmxnet3_unmap_pkt(uint32 eop_idx,
- struct vmxnet3_tx_queue *tq,
- struct pci_dev *pdev,
- struct vmxnet3_adapter *adapter)
-{
- struct sk_buff *skb;
- int entries = 0;
-
- /* no out of order completion */
- VMXNET3_ASSERT(tq->buf_info[eop_idx].sop_idx == tq->tx_ring.next2comp);
- VMXNET3_ASSERT(tq->tx_ring.base[eop_idx].txd.eop == 1);
-
- VMXNET3_LOG("tx complete [%u %u]\n", tq->tx_ring.next2comp, eop_idx);
-
- skb = tq->buf_info[eop_idx].skb;
- VMXNET3_ASSERT(skb != NULL);
- tq->buf_info[eop_idx].skb = NULL;
-
- VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size);
-
- while (tq->tx_ring.next2comp != eop_idx) {
- vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp, pdev);
-
- /* update next2comp w/o tx_lock. Since we are marking more, instead of
- * less, tx ring entries avail, the worst case is that the tx routine
- * incorrectly re-queues a pkt due to insufficient tx ring entries.
- */
- vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
- entries ++;
- }
-
- vmxnet3_dev_kfree_skb_any(adapter, skb);
- return entries;
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_tq_tx_complete --
- *
- * process tx completion for the given tx queue
- *
- * Result:
- * # of tx ring entries completed
- *
- *----------------------------------------------------------------------------
- */
-
-static int
-vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter)
-{
- int completed = 0;
- Vmxnet3_GenericDesc *gdesc;
-
- gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
- while (gdesc->tcd.gen == tq->comp_ring.gen) {
- completed += vmxnet3_unmap_pkt(gdesc->tcd.txdIdx, tq,
- adapter->pdev, adapter);
-
- vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring);
- gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
- }
-
- if (completed) {
- spin_lock(&tq->tx_lock);
- if (UNLIKELY(vmxnet3_tq_stopped(tq, adapter) &&
- vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) >
- VMXNET3_WAKE_QUEUE_THRESHOLD(tq) &&
- compat_netif_carrier_ok(adapter->netdev))) {
- vmxnet3_tq_wake(tq, adapter);
- }
- spin_unlock(&tq->tx_lock);
- }
- return completed;
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_tq_cleanup --
- *
- * unmap tx buffers, free pkts, and reset ring indices and gen
- *
- * Result:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter)
-{
- while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) {
- struct vmxnet3_tx_buf_info *tbi;
- Vmxnet3_GenericDesc *gdesc;
-
- tbi = tq->buf_info + tq->tx_ring.next2comp;
- gdesc = tq->tx_ring.base + tq->tx_ring.next2comp;
-
- vmxnet3_unmap_tx_buf(tbi, adapter->pdev);
- if (tbi->skb) {
- vmxnet3_dev_kfree_skb_any(adapter, tbi->skb);
- tbi->skb = NULL;
- }
- vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
- }
-
- /* sanity check */
-#ifdef VMX86_DEBUG
- {
- /* verify all buffers are indeed unmapped and freed */
- int i;
- for (i = 0; i < tq->tx_ring.size; i++) {
- VMXNET3_ASSERT(tq->buf_info[i].skb == NULL &&
- tq->buf_info[i].map_type == VMXNET3_MAP_NONE);
- }
- }
-#endif
-
- tq->tx_ring.gen = VMXNET3_INIT_GEN;
- tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
-
- tq->comp_ring.gen = VMXNET3_INIT_GEN;
- tq->comp_ring.next2proc = 0;
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_tq_destroy --
- *
- * free rings and buf_info for the tx queue. There must be no pending pkt
- * in the tx ring.
- *
- * Result:
- * None
- *
- * Side-effects:
- * the .base fields of all rings and buf_info will be set to NULL
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter)
-{
- if (tq->tx_ring.base) {
- pci_free_consistent(adapter->pdev,
- tq->tx_ring.size * sizeof(Vmxnet3_TxDesc),
- tq->tx_ring.base, tq->tx_ring.basePA);
- tq->tx_ring.base = NULL;
- }
- if (tq->data_ring.base) {
- pci_free_consistent(adapter->pdev,
- tq->data_ring.size * sizeof(Vmxnet3_TxDataDesc),
- tq->data_ring.base, tq->data_ring.basePA);
- tq->data_ring.base = NULL;
- }
- if (tq->comp_ring.base) {
- pci_free_consistent(adapter->pdev,
- tq->comp_ring.size * sizeof(Vmxnet3_TxCompDesc),
- tq->comp_ring.base, tq->comp_ring.basePA);
- tq->comp_ring.base = NULL;
- }
- if (tq->buf_info) {
- kfree(tq->buf_info);
- tq->buf_info = NULL;
- }
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_tq_init --
- *
- * reset all internal states and rings for a tx queue
- *
- * Result:
- * None
- *
- * Side-effects:
- * 1. contents of the rings are reset to 0
- * 2. indices and gen of rings are reset
- * 3. bookkeeping data is reset
- *
- *----------------------------------------------------------------------------
- */
+/* called to process csum related bits in the EOP RCD descriptor */
static void
-vmxnet3_tq_init(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter)
-{
- int i;
-
- /* reset the tx ring contents to 0 and reset the tx ring states */
- memset(tq->tx_ring.base, 0, tq->tx_ring.size * sizeof(Vmxnet3_TxDesc));
- tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
- tq->tx_ring.gen = VMXNET3_INIT_GEN;
-
- memset(tq->data_ring.base, 0, tq->data_ring.size * sizeof(Vmxnet3_TxDataDesc));
-
- /* reset the tx comp ring contents to 0 and reset the comp ring states */
- memset(tq->comp_ring.base, 0, tq->comp_ring.size * sizeof(Vmxnet3_TxCompDesc));
- tq->comp_ring.next2proc = 0;
- tq->comp_ring.gen = VMXNET3_INIT_GEN;
-
- /* reset the bookkeeping data */
- memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size);
- for (i = 0; i < tq->tx_ring.size; i++) {
- tq->buf_info[i].map_type = VMXNET3_MAP_NONE;
- }
-
- /* stats are not reset */
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_tq_create --
- *
- * allocate and initialize rings for the tx queue, also allocate and
- * initialize buf_info
- *
- * Result:
- * 0 on success, negative errno on failure.
- *
- *----------------------------------------------------------------------------
- */
-static int
-vmxnet3_tq_create(struct vmxnet3_tx_queue *tq,
- struct vmxnet3_adapter *adapter)
-{
- VMXNET3_ASSERT(tq->tx_ring.size > 0 &&
- tq->data_ring.size == tq->tx_ring.size);
- VMXNET3_ASSERT((tq->tx_ring.size & VMXNET3_RING_SIZE_MASK) == 0);
- VMXNET3_ASSERT(!tq->tx_ring.base && !tq->data_ring.base &&
- !tq->comp_ring.base && !tq->buf_info);
-
- tq->tx_ring.base = pci_alloc_consistent(adapter->pdev,
- tq->tx_ring.size * sizeof(Vmxnet3_TxDesc),
- &tq->tx_ring.basePA);
- if (!tq->tx_ring.base) {
- printk(KERN_ERR "%s: failed to allocate tx ring\n", adapter->netdev->name);
- goto err;
- }
-
- tq->data_ring.base = pci_alloc_consistent(adapter->pdev,
- tq->data_ring.size * sizeof(Vmxnet3_TxDataDesc),
- &tq->data_ring.basePA);
- if (!tq->data_ring.base) {
- printk(KERN_ERR "%s: failed to allocate data ring\n", adapter->netdev->name);
- goto err;
- }
-
- tq->comp_ring.base = pci_alloc_consistent(adapter->pdev,
- tq->comp_ring.size * sizeof(Vmxnet3_TxCompDesc),
- &tq->comp_ring.basePA);
- if (!tq->comp_ring.base) {
- printk(KERN_ERR "%s: failed to allocate tx comp ring\n", adapter->netdev->name);
- goto err;
- }
-
- tq->buf_info = kmalloc(sizeof(tq->buf_info[0]) * tq->tx_ring.size, GFP_KERNEL);
- if (!tq->buf_info) {
- printk(KERN_ERR "%s: failed to allocate tx bufinfo\n", adapter->netdev->name);
- goto err;
- }
-
- return 0;
-
-err:
- vmxnet3_tq_destroy(tq, adapter);
- return -ENOMEM;
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_rq_alloc_rx_buf --
- *
- * starting from ring->next2fill, allocate rx buffers for the given ring
- * of the rx queue and update the rx desc. stop after @num_to_alloc buffers
- * are allocated or allocation fails
- *
- * Result:
- * returns # of buffers allocated
- *
- * Side-effects:
- * 1. rx descs are updated
- * 2. ring->{gen, next2fill} are updated
- * 3. uncommitted[ring_idx] is incremented
- *
- *----------------------------------------------------------------------------
- */
-
-static int
-vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq,
- uint32 ring_idx,
- int num_to_alloc,
- struct vmxnet3_adapter *adapter)
-{
- int num_allocated = 0;
- struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx];
- struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx];
- uint32 val;
-
- while (num_allocated < num_to_alloc) {
- struct vmxnet3_rx_buf_info *rbi;
- Vmxnet3_GenericDesc *gd;
-
- rbi = rbi_base + ring->next2fill;
- gd = ring->base + ring->next2fill;
-
- if (rbi->buf_type == VMXNET3_RX_BUF_SKB) {
- if (rbi->skb == NULL) {
- rbi->skb = vmxnet3_dev_alloc_skb(adapter, rbi->len + COMPAT_NET_IP_ALIGN);
- if (UNLIKELY(rbi->skb == NULL)) {
- rq->stats.rx_buf_alloc_failure++;
- break;
- }
- rbi->skb->dev = adapter->netdev;
-
- if (!adapter->is_shm) {
- skb_reserve(rbi->skb, COMPAT_NET_IP_ALIGN);
- }
- rbi->dma_addr = vmxnet3_map_single(adapter, rbi->skb, 0,
- rbi->len, PCI_DMA_FROMDEVICE);
- } else {
- /* rx buffer skipped by the device */
- }
- val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT;
- } else {
- VMXNET3_ASSERT(rbi->buf_type == VMXNET3_RX_BUF_PAGE &&
- rbi->len == PAGE_SIZE);
-
- if (rbi->page == NULL) {
- rbi->page = vmxnet3_alloc_page(adapter);
- if (UNLIKELY(rbi->page == NULL)) {
- rq->stats.rx_buf_alloc_failure++;
- break;
- }
- rbi->dma_addr = vmxnet3_map_page(adapter, rbi->page,
- 0, PAGE_SIZE,
- PCI_DMA_FROMDEVICE);
- } else {
- /* rx buffers skipped by the device */
- }
- val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT;
- }
-
- VMXNET3_ASSERT(rbi->dma_addr != 0);
- gd->rxd.addr = rbi->dma_addr;
- wmb();
- 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;
-
- VMXNET3_LOG("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 */
- VMXNET3_ASSERT(num_allocated == 0 || ring->next2fill != ring->next2comp);
-
- return num_allocated;
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_append_frag --
- *
- * Append a frag to the speicified skb. It assumes the skb still has space
- * to accommodate the frag. It only increments skb->data_len
- *
- * Result:
- * None
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static inline void
-vmxnet3_append_frag(struct sk_buff *skb,
- Vmxnet3_RxCompDesc *rcd,
- struct vmxnet3_rx_buf_info *rbi)
-{
- struct skb_frag_struct *frag = skb_shinfo(skb)->frags +
- skb_shinfo(skb)->nr_frags;
-
- VMXNET3_ASSERT(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 ++;
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_rx_csum --
- *
- * called to process csum related bits in the EOP RCD descriptor
- *
- * Result:
- * None
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static inline void
vmxnet3_rx_csum(struct vmxnet3_adapter *adapter,
- struct sk_buff *skb,
- 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 = VM_CHECKSUM_UNNECESSARY;
- VMXNET3_ASSERT((gdesc->rcd.tcp || gdesc->rcd.udp) &&
- (gdesc->rcd.v4 || gdesc->rcd.v6) &&
- !gdesc->rcd.frg);
- } else {
- if (gdesc->rcd.csum) {
- skb->csum = htons(gdesc->rcd.csum);
- skb->ip_summed = VM_RX_CHECKSUM_PARTIAL;
- } else {
- skb->ip_summed = CHECKSUM_NONE;
- }
- }
- } else {
- skb->ip_summed = CHECKSUM_NONE;
- }
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_rx_error --
- *
- * called when ERR bit is set for a received pkt. The desc and the associated
- * rx buffer have not been processed yet.
- *
- * Result:
- * none
+ 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 = VM_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 = VM_RX_CHECKSUM_PARTIAL;
+ } else {
+ skb->ip_summed = CHECKSUM_NONE;
+ }
+ }
+ } else {
+ skb->ip_summed = CHECKSUM_NONE;
+ }
+}
+
+
+/*
+ * called when ERR bit is set for a received pkt. The desc and the associated
+ * rx buffer have not been processed yet.
*
* Side-effects:
* 1. up the stat counters
* 2. free the skb if needed
* 3. reset ctx->skb
- *
- *----------------------------------------------------------------------------
*/
static void
-vmxnet3_rx_error(struct vmxnet3_rx_queue *rq,
- Vmxnet3_RxCompDesc *rcd,
- struct vmxnet3_rx_ctx *ctx,
- struct vmxnet3_adapter *adapter)
+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) {
- vmxnet3_dev_kfree_skb_irq(adapter, ctx->skb);
- }
- ctx->skb = NULL;
-}
+ rq->stats.drop_err++;
+ if (!rcd->fcs)
+ rq->stats.drop_fcs++;
+ rq->stats.drop_total++;
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_rq_rx_complete --
- *
- * process the rx completion ring of the given rx queue. Quota specified the
- * max # of rx completion entries to be processed
- *
- * Result:
- * # of rx descs completed
- *
- * Side-effects:
- * None
- *----------------------------------------------------------------------------
+ /*
+ * 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)
+ vmxnet3_dev_kfree_skb_irq(adapter, ctx->skb);
+
+ ctx->skb = NULL;
+}
+
+/* process the rx completion ring of the given rx queue. Quota specifies the
+ * max # of rx completion entries to be processed. Returns # of descs completed.
*/
static int
#ifdef VMXNET3_NAPI
vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
- struct vmxnet3_adapter *adapter,
- int quota)
+ struct vmxnet3_adapter *adapter, int quota)
#else
vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
- struct vmxnet3_adapter *adapter)
+ struct vmxnet3_adapter *adapter)
#endif
{
- static uint32 rxprod_reg[2] = {VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2};
- uint32 num_rxd = 0;
- 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;
- Vmxnet3_RxDesc *rxd;
- uint32 idx, ring_idx;
+ 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;
#ifdef VMXNET3_NAPI
- if (num_rxd >= quota) {
- /* we may stop even before we see the EOP desc of the current pkt */
- break;
- }
- num_rxd++;
+ if (num_rxd >= quota) {
+ /* we may stop even before we see the EOP desc of
+ * the current pkt
+ */
+ break;
+ }
+ num_rxd++;
#endif
- 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;
-
- VMXNET3_ASSERT(rcd->len <= rxd->len);
- VMXNET3_ASSERT(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 */
- VMXNET3_ASSERT(rxd->btype == VMXNET3_RXD_BTYPE_HEAD &&
- rcd->rqID == rq->qid);
-
- VMXNET3_ASSERT(rbi->buf_type == VMXNET3_RX_BUF_SKB);
- VMXNET3_ASSERT(ctx->skb == NULL && rbi->skb != NULL);
-
- if (UNLIKELY(rcd->len == 0)) {
- /* Pretend the rx buffer is skipped. */
- VMXNET3_ASSERT(rcd->sop && rcd->eop);
- VMXNET3_LOG("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);
-
- vmxnet3_skb_put(adapter, ctx->skb, rcd->len);
- } else {
- VMXNET3_ASSERT(ctx->skb != NULL);
- /* non SOP buffer must be type 1 in most cases */
- if (rbi->buf_type == VMXNET3_RX_BUF_PAGE) {
- VMXNET3_ASSERT(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.
- */
- VMXNET3_ASSERT(FALSE);
- }
- }
-
- skb = ctx->skb;
- if (rcd->eop) {
- if (adapter->is_shm) {
- vmxnet3_shm_rx_skb(adapter, skb);
-
- wake_up(&adapter->shm->rxq);
- } else {
- skb->len += skb->data_len;
- skb->truesize += skb->data_len;
-
- vmxnet3_rx_csum(adapter, skb, (Vmxnet3_GenericDesc*)rcd);
- skb->protocol = eth_type_trans(skb, adapter->netdev);
+ 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(rcd->len > rxd->len);
+ 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->pdev->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);
+
+ vmxnet3_skb_put(adapter, 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) {
+ if (adapter->is_shm) {
+ vmxnet3_shm_rx_skb(adapter, skb);
+
+ wake_up(&adapter->shm->rxq);
+ } else {
+ 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);
#ifdef VMXNET3_NAPI
- if (UNLIKELY(adapter->vlan_grp && rcd->ts)) {
- vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, rcd->tci);
- } else {
- netif_receive_skb(skb);
- }
+ if (unlikely(adapter->vlan_grp && rcd->ts)) {
+ vlan_hwaccel_receive_skb(skb,
+ adapter->vlan_grp, rcd->tci);
+ } else {
+ netif_receive_skb(skb);
+ }
#else
- if (UNLIKELY(adapter->vlan_grp && rcd->ts)) {
- vlan_hwaccel_rx(skb, adapter->vlan_grp, rcd->tci);
- } else {
- netif_rx(skb);
- }
+ if (unlikely(adapter->vlan_grp && rcd->ts)) {
+ vlan_hwaccel_rx(skb, adapter->vlan_grp,
+ rcd->tci);
+ } else {
+ netif_rx(skb);
+ }
#endif
- }
+ }
- adapter->netdev->last_rx = jiffies;
- ctx->skb = NULL;
- }
+ 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 from time to time 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;
-}
-
+ /* 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);
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_rq_cleanup --
- *
- * Unmap and free the rx buffers allocated to the rx queue. Other resources
- * are NOT freed. This is the counterpart of vmxnet3_rq_init()
- *
- * the content of the rx rings must still be valid when we are invoked
- *
- * Result:
- * None
- *
- * Side-effects:
- * 1. indices and gen of each ring are reset to the initial value
- * 2. buf_info[] and buf_info2[] are cleared.
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq,
- struct vmxnet3_adapter *adapter)
-{
- uint32 i, ring_idx;
- 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);
- vmxnet3_dev_kfree_skb(adapter, 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);
- vmxnet3_put_page(adapter, 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;
-}
+ /* 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_rq_destroy --
- *
- * Free rings and buf_info for the rx queue. The rx buffers must have
- * ALREADY been freed.
- *
- * Result:
- * None
- *
- * Side-effects:
- * the .base fields of all rings will be set to NULL
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
- struct vmxnet3_adapter *adapter)
-{
- int i;
+ vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring);
+ rcd = &rq->comp_ring.base[rq->comp_ring.next2proc].rcd;
+ }
-#ifdef VMX86_DEBUG
- /* all rx buffers must have already been freed */
- {
- int j;
-
- for (i = 0; i < 2; i++) {
- if (rq->buf_info[i]) {
- for (j = 0; j < rq->rx_ring[i].size; j++) {
- VMXNET3_ASSERT(rq->buf_info[i][j].page == NULL);
- }
- }
- }
- }
-#endif
-
- if (rq->buf_info[0]) {
- 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(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(Vmxnet3_RxCompDesc),
- rq->comp_ring.base, rq->comp_ring.basePA);
- rq->comp_ring.base = NULL;
- }
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_rq_init --
- *
- * initialize buf_info, allocate rx buffers and fill the rx rings. On
- * failure, the rx buffers already allocated are NOT freed
- *
- * Result:
- * 0 on success or error code
- *
- *----------------------------------------------------------------------------
- */
-
-static int
-vmxnet3_rq_init(struct vmxnet3_rx_queue *rq,
- struct vmxnet3_adapter *adapter)
-{
- int i;
-
- VMXNET3_ASSERT(adapter->rx_buf_per_pkt > 0 &&
- rq->rx_ring[0].size % adapter->rx_buf_per_pkt == 0);
-
- /* initialize buf_info */
- for (i = 0; i < rq->rx_ring[0].size; i++) {
- VMXNET3_ASSERT(rq->buf_info[0][i].skb == NULL);
- if (i % adapter->rx_buf_per_pkt == 0) { /* 1st buf for a pkt is skbuff */
- 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++) {
- VMXNET3_ASSERT(rq->buf_info[1][i].page == NULL);
- 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(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(Vmxnet3_RxCompDesc));
- rq->comp_ring.gen = VMXNET3_INIT_GEN;
-
- /* reset rxctx */
- rq->rx_ctx.skb = NULL;
-
- /* stats are not reset */
- return 0;
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_rq_create --
- *
- * allocate and initialize two cmd rings and the completion ring for the
- * given rx queue. Also allocate and initialize buf_info.
- * rx buffers are NOT allocated
- *
- * Result:
- * 0 on success, negative errno on failure
- *----------------------------------------------------------------------------
- */
-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;
-
- VMXNET3_ASSERT(rq->rx_ring[0].size % adapter->rx_buf_per_pkt == 0);
-
- for (i = 0; i < 2; i++) {
- VMXNET3_ASSERT((rq->rx_ring[i].size & VMXNET3_RING_SIZE_MASK) == 0);
- VMXNET3_ASSERT(rq->rx_ring[i].base == NULL);
-
- sz = rq->rx_ring[i].size * sizeof(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(Vmxnet3_RxCompDesc);
- VMXNET3_ASSERT(rq->comp_ring.base == NULL);
- 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;
- }
-
- VMXNET3_ASSERT(!rq->buf_info[0] && !rq->buf_info[1]);
- 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;
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_vlan_features --
- *
- * Inherit net_device features from real device to VLAN device.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Modifies VLAN net_device's features.
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_vlan_features(struct vmxnet3_adapter *adapter, // IN:
- uint16_t vid, // IN:
- Bool allvids) // IN:
-{
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)
- struct net_device *v_netdev;
-
- if (adapter->vlan_grp) {
- if (allvids) {
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
- v_netdev = compat_vlan_group_get_device(adapter->vlan_grp, vid);
- if (v_netdev) {
- v_netdev->features |= adapter->netdev->features;
- compat_vlan_group_set_device(adapter->vlan_grp, vid, v_netdev);
- }
- }
- } else {
- v_netdev = compat_vlan_group_get_device(adapter->vlan_grp, vid);
- if (v_netdev) {
- v_netdev->features |= adapter->netdev->features;
- compat_vlan_group_set_device(adapter->vlan_grp, vid, v_netdev);
- }
- }
- }
-#endif
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_vlan_rx_register --
- *
- * Called to enable/disable VLAN stripping.
- *
- * Result:
- * None
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
-{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- Vmxnet3_DriverShared *shared = adapter->shared;
- uint32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
-
- if (grp) {
- // add vlan rx stripping.
- if (adapter->netdev->features & NETIF_F_HW_VLAN_RX) {
- int i;
- 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.
- 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);
- }
- }
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_restore_vlan --
- *
- * Setup driverShared.devRead.rxFilter.vfTable
- *
- * Result:
- * None
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter)
-{
- if (adapter->vlan_grp) {
- uint16 vid;
- uint32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
- Bool activeVlan = FALSE;
-
- for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
- if (compat_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);
- }
- }
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_vlan_rx_add_vid --
- *
- * Called to add a VLAN ID.
- *
- * Result:
- * None
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
-{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- uint32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
-
- vmxnet3_vlan_features(adapter, vid, FALSE);
- VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_VLAN_FILTERS);
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_vlan_rx_kill_vid --
- *
- * Called to remove a VLAN ID.
- *
- * Result:
- * None
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
-{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- uint32 *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);
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_copy_mc --
- *
- * Allocate a buffer and copy into the mcast list.
- * It returns NULL if the mcast list exceeds the limit.
- *
- * Result:
- * The addr of the allocated buffer or NULL.
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static uint8 *
-vmxnet3_copy_mc(struct net_device *netdev)
-{
- uint8 *buf = NULL;
- uint32 sz = netdev->mc_count * ETH_ALEN;
-
- /* Vmxnet3_RxFilterConf.mfTableLen is uint16. */
- 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++) {
- VMXNET3_ASSERT(mc);
- memcpy(buf + i * ETH_ALEN, mc->dmi_addr, ETH_ALEN);
- mc = mc->next;
- }
- }
- }
- return buf;
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_set_mc --
- *
- * Called to change rx mode as well as multicast list.
- *
- * Result:
- * None
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_set_mc(struct net_device *netdev)
-{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- Vmxnet3_RxFilterConf *rxConf = &adapter->shared->devRead.rxFilterConf;
- uint8 *new_table = NULL;
- uint32 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);
-
- if (new_table) {
- kfree(new_table);
- }
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_activate_dev --
- *
- * put the vNIC into an operational state. After this function finishes, the
- * adapter is fully functional. It does the following:
- *
- * 1. initialize tq and rq
- * 2. fill rx rings with rx buffers
- * 3. setup intr
- * 4. setup driver_shared
- * 5. activate the dev
- * 6. signal the stack that the vNIC is ready to tx/rx
- * 7. enable intrs for the vNIC
- *
- * Result:
- * 0 if the vNIC is in operation state
- * error code if any intermediate step fails.
- *
- *----------------------------------------------------------------------------
- */
-
-int
-vmxnet3_activate_dev(struct vmxnet3_adapter *adapter)
-{
- int err;
- uint32 ret;
-
- VMXNET3_LOG("%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);
-
-#ifdef VMXNET3_NAPI
- compat_napi_enable(adapter->netdev, &adapter->napi);
-#endif
-
- 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;
-}
-
-
-static void
-vmxnet3_reset_dev(struct vmxnet3_adapter *adapter)
-{
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_quiesce_dev --
- *
- * stop the device. After this function returns, the adapter stop pkt tx/rx
- * and won't generate intrs. The stack won't try to xmit pkts through us,
- * nor will it poll us for pkts. It does the following:
- *
- * 1. ask the vNIC to quiesce
- * 2. disable the vNIC from generating intrs
- * 3. free intr
- * 4. stop the stack from xmiting pkts thru us and polling
- * 5. free rx buffers
- * 6. tx complete pkts pending
- *
- * Result:
- * 0 on success
- *
- *----------------------------------------------------------------------------
- */
-
-int
-vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter)
-{
- if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state)) {
- printk(KERN_INFO "%s: already quiesced\n", adapter->netdev->name);
- return 0;
- }
-
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
- vmxnet3_disable_all_intrs(adapter);
-
-#ifdef VMXNET3_NAPI
- compat_napi_disable(adapter->netdev, &adapter->napi);
-#endif
-
- netif_tx_disable(adapter->netdev);
-
- adapter->link_speed = 0;
- netif_carrier_off(adapter->netdev);
-
- /* TODO: force tx completion */
-
- vmxnet3_tq_cleanup(&adapter->tx_queue, adapter);
- vmxnet3_rq_cleanup(&adapter->rx_queue, adapter);
-
- vmxnet3_free_irqs(adapter);
- return 0;
+ return num_rxd;
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_write_mac_addr --
- *
- * Write the given MAC address to the device register
- *
- * Result:
- * None
- *
+ * Unmap and free the rx buffers allocated to the rx queue. Other resources
+ * are NOT freed. This is the counterpart of vmxnet3_rq_init()
* Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
+ * 1. indices and gen of each ring are reset to the initial value
+ * 2. buf_info[] and buf_info2[] are cleared.
*/
static void
-vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, uint8 *mac)
+vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq,
+ struct vmxnet3_adapter *adapter)
{
- uint32 tmp;
-
- tmp = *(uint32*)mac;
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp);
+ u32 i, ring_idx;
+ struct Vmxnet3_RxDesc *rxd;
- tmp = (mac[5] << 8) | mac[4];
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp);
-}
-
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_set_mac_addr --
- *
- * Change the current MAC address
- *
- * Result:
- * 0 on success
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
+ 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;
-static int
-vmxnet3_set_mac_addr(struct net_device *netdev, void *p)
-{
- struct sockaddr *addr = p;
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
+ 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);
+ vmxnet3_dev_kfree_skb(adapter,
+ 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);
+ vmxnet3_put_page(adapter,
+ rq->buf_info[ring_idx][i].page);
+ rq->buf_info[ring_idx][i].page = NULL;
+ }
+ }
- memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
- vmxnet3_write_mac_addr(adapter, addr->sa_data);
+ 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;
+ }
- return 0;
+ rq->comp_ring.gen = VMXNET3_INIT_GEN;
+ rq->comp_ring.next2proc = 0;
}
-/* ==================== initialization and cleanup routines ============ */
-
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_alloc_pci_resources --
- *
- * allocate pci resources
- *
- * Result:
- * 0 on success or error code
- *
- *----------------------------------------------------------------------------
+ * Free rings and buf_info for the rx queue. The rx buffers must have
+ * ALREADY been freed. the .base fields of all rings will be set to NULL
*/
-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 = compat_pci_enable_device(pdev);
- if (err) {
- printk(KERN_ERR "Failed to enable adapter %s: error %d\n",
- compat_pci_name(pdev), err);
- return err;
- }
+void
+vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
+ struct vmxnet3_adapter *adapter)
+{
+ int i;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 6)
- 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",
- compat_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",
- compat_pci_name(pdev));
- err = -EIO;
- goto err_set_mask;
- }
- *dma64 = FALSE;
- }
-#else
- *dma64 = TRUE;
+#ifdef VMX86_DEBUG
+ /* all rx buffers must have already been freed */
+ {
+ int j;
+
+ 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);
+ }
+ }
+ }
+ }
#endif
- err = compat_pci_request_regions(pdev, vmxnet3_driver_name);
- if (err) {
- printk(KERN_ERR "Failed to request region for adapter %s: error %d\n",
- compat_pci_name(pdev), err);
- goto err_set_mask;
- }
-
- compat_pci_set_master(pdev);
-
- mmio_start = compat_pci_resource_start(pdev, 0);
- mmio_len = compat_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",
- compat_pci_name(pdev));
- err = -EIO;
- goto err_ioremap;
- }
-
- mmio_start = compat_pci_resource_start(pdev, 1);
- mmio_len = compat_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",
- compat_pci_name(pdev));
- err = -EIO;
- goto err_bar1;
- }
- return 0;
-err_bar1:
- iounmap(adapter->hw_addr0);
-err_ioremap:
- compat_pci_release_regions(pdev);
-err_set_mask:
- compat_pci_disable_device(pdev);
- return err;
-}
-
-
-static void
-vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter)
-{
- VMXNET3_ASSERT(adapter->pdev);
+ kfree(rq->buf_info[0]);
- iounmap(adapter->hw_addr0);
- iounmap(adapter->hw_addr1);
- compat_pci_release_regions(adapter->pdev);
- compat_pci_disable_device(adapter->pdev);
+ 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;
+ }
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_setup_driver_shared --
- *
- * Set up driver_shared based on settings in adapter.
- *
- * Result:
- * 1. the whole driver_shared area is wiped out and re-initialized
- *
- *----------------------------------------------------------------------------
+ * initialize buf_info, allocate rx buffers and fill the rx rings. On
+ * failure, the rx buffers already allocated are NOT freed
*/
-static void
-vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter)
-{
- Vmxnet3_DriverShared *shared = adapter->shared;
- Vmxnet3_DSDevRead *devRead = &shared->devRead;
- Vmxnet3_TxQueueConf *tqc;
- 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(Vmxnet3_TxQueueDesc) +
- sizeof(Vmxnet3_RxQueueDesc);
-
- /* tx queue settings */
- VMXNET3_ASSERT(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 */
+static int
+vmxnet3_rq_init(struct vmxnet3_rx_queue *rq,
+ struct vmxnet3_adapter *adapter)
+{
+ int i;
+
+ BUG_ON(adapter->rx_buf_per_pkt <= 0 ||
+ rq->rx_ring[0].size % adapter->rx_buf_per_pkt != 0);
+ /* initialize buf_info */
+ for (i = 0; i < rq->rx_ring[0].size; i++) {
+ BUG_ON(rq->buf_info[0][i].skb != NULL);
+ /* 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++) {
+ BUG_ON(rq->buf_info[1][i].page != NULL);
+ 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;
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_adjust_rx_ring_size --
- *
- * calc the # of buffers for a pkt based on mtu, then adjust the size of the
- * 1st rx ring accordingly
- *
- * Result:
- * None
- *
- *----------------------------------------------------------------------------
+ * allocate and initialize two cmd rings and the completion ring for the
+ * given rx queue. Also allocate and initialize buf_info.
+ * rx buffers are NOT allocated
*/
+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;
+
+ BUG_ON(rq->rx_ring[0].size % adapter->rx_buf_per_pkt != 0);
+ for (i = 0; i < 2; i++) {
+ BUG_ON((rq->rx_ring[i].size & VMXNET3_RING_SIZE_MASK) != 0);
+ BUG_ON(rq->rx_ring[i].base != NULL);
+ 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(Vmxnet3_RxCompDesc);
+ BUG_ON(rq->comp_ring.base != NULL);
+ 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;
+ }
+
+ BUG_ON(rq->buf_info[0] || rq->buf_info[1]);
+ 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;
+}
+
+#ifdef VMXNET3_NAPI
static void
-vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter)
+vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget, int *txd_done,
+ int *rxd_done)
{
- 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;
- }
-
- if (adapter->is_shm) {
- adapter->skb_buf_size = 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(uint32, adapter->rx_queue.rx_ring[0].size,
- VMXNET3_RX_RING_MAX_SIZE / sz * sz);
+ if (unlikely(adapter->shared->ecr))
+ vmxnet3_process_events(adapter);
+
+ *txd_done = vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
+ *rxd_done = vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter, budget);
}
+#ifdef VMXNET3_NEW_NAPI
+
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_create_queues --
- *
- * Create the specified number of tx queues and rx queues. On failure, it
- * destroys the queues created.
- *
- * Results:
- * 0 on success, errno value on failure.
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
+ * New NAPI polling function. Returns # of the NAPI credit consumed (# of rx
+ * descriptors processed)
*/
-
static int
-vmxnet3_create_queues(struct vmxnet3_adapter *adapter,
- uint32 tx_ring_size,
- uint32 rx_ring_size,
- uint32 rx_ring2_size)
+vmxnet3_poll(struct napi_struct *napi, int budget)
{
- 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;
-}
+ struct vmxnet3_adapter *adapter = container_of(napi,
+ struct vmxnet3_adapter, napi);
+ int rxd_done, txd_done;
+ vmxnet3_do_poll(adapter, budget, &txd_done, &rxd_done);
+
+ if (rxd_done < budget) {
+ compat_napi_complete(adapter->netdev, napi);
+ vmxnet3_enable_intr(adapter, 0);
+ }
+ return rxd_done;
+}
+#else
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_open --
- *
- * called when the interface is brought up
- *
* Result:
- * 0 on success, negative errno value on failure
- *
- * Side-effects:
- * setup rings, allocate necessary resources, request for IRQs, configure
- * the device. The device is functional after this function finishes
- * successfully.
- *
- *----------------------------------------------------------------------------
+ * 0: napi is done
+ * 1: continue polling
*/
static int
-vmxnet3_open(struct net_device *netdev)
+vmxnet3_poll(struct net_device *poll_dev, int *budget)
{
- struct vmxnet3_adapter *adapter;
- int err;
-
- adapter = compat_netdev_priv(netdev);
+ int rxd_done, txd_done, quota;
+ struct vmxnet3_adapter *adapter = netdev_priv(poll_dev);
- spin_lock_init(&adapter->tx_queue.tx_lock);
+ quota = min(*budget, poll_dev->quota);
- if (adapter->is_shm) {
- printk(KERN_INFO "bringing up shared memory vmxnet3 %s\n", netdev->name);
- err = vmxnet3_shm_open(adapter, netdev->name);
- if (err) {
- goto shm_err;
- }
- }
+ vmxnet3_do_poll(adapter, quota, &txd_done, &rxd_done);
- 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;
- }
+ *budget -= rxd_done;
+ poll_dev->quota -= rxd_done;
- err = vmxnet3_activate_dev(adapter);
- if (err) {
- goto activate_err;
- }
+ if (rxd_done < quota) {
+ compat_napi_complete(poll_dev, unused);
+ vmxnet3_enable_intr(adapter, 0);
+ return 0;
+ }
- COMPAT_NETDEV_MOD_INC_USE_COUNT;
-
- return 0;
-
-activate_err:
- vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
- vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
-queue_err:
- if (adapter->is_shm) {
- vmxnet3_shm_close(adapter);
- }
-shm_err:
- return err;
+ return 1; /* not done */
}
+#endif /* VMXNET3_NEW_NAPI */
+#endif /* VMXNET3_NAPI */
-static int
-vmxnet3_close(struct net_device *netdev)
-{
- struct vmxnet3_adapter *adapter = compat_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)) {
- compat_msleep(1);
- }
-
- vmxnet3_quiesce_dev(adapter);
- if (adapter->is_shm) {
- vmxnet3_shm_close(adapter);
- }
+/* Interrupt handler for vmxnet3 */
+static compat_irqreturn_t
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
+vmxnet3_intr(int irq, void *dev_id, struct pt_regs * regs)
+#else
+vmxnet3_intr(int irq, void *dev_id)
+#endif
+{
+ struct net_device *dev = dev_id;
+ struct vmxnet3_adapter *adapter = netdev_priv(dev);
- vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
- vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
+ 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;
+ }
- COMPAT_NETDEV_MOD_DEC_USE_COUNT;
+#ifdef VMXNET3_NAPI
+ /* disable intr if needed */
+ if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE)
+ vmxnet3_disable_intr(adapter, 0);
- clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
+ compat_napi_schedule(dev, &adapter->napi);
+#else
+ vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
+ vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter);
+ if (unlikely(adapter->shared->ecr)) {
+ vmxnet3_process_events(adapter);
+ }
+ vmxnet3_enable_intr(adapter, 0);
+#endif
- return 0;
+ return COMPAT_IRQ_HANDLED;
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_force_close --
- *
- * called to forcibly close the device when the driver failed to re-activate it.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------------
- */
-void
-vmxnet3_force_close(struct vmxnet3_adapter *adapter)
+static void
+vmxnet3_netpoll(struct net_device *netdev)
{
- /*
- * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise
- * vmxnet3_close() will deadlock.
- */
- VMXNET3_ASSERT(!test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state));
+ struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
+ int irq;
-#ifdef VMXNET3_NAPI
- /* we need to enable NAPI, otherwise dev_close will deadlock */
- compat_napi_enable(adapter->netdev, &adapter->napi);
+#ifdef CONFIG_PCI_MSI
+ if (adapter->intr.type == VMXNET3_IT_MSIX)
+ irq = adapter->intr.msix_entries[0].vector;
+ else
#endif
- dev_close(adapter->netdev);
-}
-
+ irq = adapter->pdev->irq;
-static int
-vmxnet3_change_mtu(struct net_device *netdev, int new_mtu)
-{
- struct vmxnet3_adapter *adapter = compat_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)) {
- compat_msleep(1);
- }
-
- if (compat_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;
+ disable_irq(irq);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
+ vmxnet3_intr(irq, netdev, NULL);
+#else
+ vmxnet3_intr(irq, netdev);
+#endif
+ enable_irq(irq);
}
+#endif
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_declare_features --
- *
- * set netdev->features based on the device's capabilities
- *
- * Result:
- * None
- *
- * Side-effects:
- * netdev->features is set
- *
- *----------------------------------------------------------------------------
+ * event_intr_idx and intr_idx for different comp rings get updated here.
*/
-static void
-vmxnet3_declare_features(struct vmxnet3_adapter *adapter, Bool dma64)
+static int
+vmxnet3_request_irqs(struct vmxnet3_adapter *adapter)
{
- struct net_device *netdev = adapter->netdev;
+ int err;
- 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;
- printk(KERN_INFO "features: sg csum vlan jf tso");
+#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 if (adapter->intr.type == VMXNET3_IT_MSI)
+ err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0,
+ adapter->netdev->name, adapter->netdev);
+ else
+#endif
+ err = request_irq(adapter->pdev->irq, vmxnet3_intr,
+ COMPAT_IRQF_SHARED, adapter->netdev->name,
+ adapter->netdev);
- adapter->rxcsum = TRUE;
- adapter->jumbo_frame = TRUE;
+ if (err)
+ printk(KERN_ERR "Failed to request irq %s (intr type:%d), error"
+ ":%d\n", adapter->netdev->name, adapter->intr.type, err);
-#ifdef NETIF_F_TSO6
- netdev->features |= NETIF_F_TSO6;
- printk(" tsoIPv6");
-#endif
- if (!disable_lro) {
- adapter->lro = TRUE;
- printk(" lro");
- }
+ 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;
- if (dma64) {
- netdev->features |= NETIF_F_HIGHDMA;
- printk(" highDMA");
- }
+ /* 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;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
- netdev->vlan_features = netdev->features;
-#endif
+ 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);
+ }
- printk("\n");
+ return err;
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_read_mac_addr --
- *
- * Read the current MAC address from the device and store into @mac
- *
- * Result:
- * None
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
static void
-vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, uint8 *mac)
+vmxnet3_free_irqs(struct vmxnet3_adapter *adapter)
{
- uint32 tmp;
-
- tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
- *(uint32*)mac = tmp;
+ BUG_ON(adapter->intr.type == VMXNET3_IT_AUTO ||
+ adapter->intr.num_intrs <= 0);
- tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
- mac[4] = tmp & 0xff;
- mac[5] = (tmp >> 8) & 0xff;
+ 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;
+ }
+ case VMXNET3_IT_MSI:
+ free_irq(adapter->pdev->irq, adapter->netdev);
+ break;
+#endif
+ 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 = compat_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);
+ }
+ }
+}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_rx_csum --
- *
- * Ethtool callback to return whether or not the dev verifies rx csum
- *
- * Result:
- * 1 if the device verifies rx csum and 0 otherwise
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-static uint32
-vmxnet3_get_rx_csum(struct net_device *netdev)
+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 (compat_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);
+ }
+ }
+}
+
+/* Inherit net_device features from real device to VLAN device. */
+void
+vmxnet3_vlan_features(struct vmxnet3_adapter *adapter, u16 vid, Bool allvids)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- return adapter->rxcsum;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)
+ struct net_device *v_netdev;
+
+ if (adapter->vlan_grp) {
+ if (allvids) {
+ for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ v_netdev = compat_vlan_group_get_device(
+ adapter->vlan_grp, vid);
+ if (v_netdev) {
+ v_netdev->features |=
+ adapter->netdev->features;
+ compat_vlan_group_set_device(
+ adapter->vlan_grp, vid, v_netdev);
+ }
+ }
+ } else {
+ v_netdev = compat_vlan_group_get_device(
+ adapter->vlan_grp, vid);
+ if (v_netdev) {
+ v_netdev->features |= adapter->netdev->features;
+ compat_vlan_group_set_device(adapter->vlan_grp,
+ vid, v_netdev);
+ }
+ }
+ }
+#endif
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_set_rx_csum --
- *
- * Ethtool callback to change if rx csum verification should be done
- *
- * Result:
- * 0 on success
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
-static int
-vmxnet3_set_rx_csum(struct net_device *netdev, uint32 val)
+static void
+vmxnet3_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
-
- if (adapter->rxcsum != val) {
- adapter->rxcsum = val;
- if (compat_netif_running(netdev)) {
- if (val) {
- adapter->shared->devRead.misc.uptFeatures |= UPT1_F_RXCSUM;
- } else {
- adapter->shared->devRead.misc.uptFeatures &= ~UPT1_F_RXCSUM;
- }
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_FEATURE);
- }
- }
- return 0;
-}
+ struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
+ u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+ vmxnet3_vlan_features(adapter, vid, FALSE);
+ VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_tx_csum --
- *
- * Ethtool op to return whether or not tx csum offload is enabled
- *
- * Result:
- * 1 if tx csum offload is currently used and 0 otherwise
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-static uint32
-vmxnet3_get_tx_csum(struct net_device *netdev)
+static void
+vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
{
- return (netdev->features & NETIF_F_HW_CSUM) != 0;
+ struct vmxnet3_adapter *adapter = compat_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);
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_set_tx_csum --
- *
- * Ethtool op to change if tx csum offloading should be used or not
- *
- * Result:
- * 0 on success
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
+ * Allocate a buffer and copy into the mcast list. Returns NULL if the mcast
+ * list exceeds the limit. Returns the addr of the allocated buffer or NULL.
*/
-static int
-vmxnet3_set_tx_csum(struct net_device *netdev, uint32 val)
+static u8 *
+vmxnet3_copy_mc(struct net_device *netdev)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- if (val) {
- netdev->features |= NETIF_F_HW_CSUM;
- } else {
- netdev->features &= ~ NETIF_F_HW_CSUM;
- }
- vmxnet3_vlan_features(adapter, 0, TRUE);
- return 0;
-}
+ u8 *buf = NULL;
+ u32 sz = netdev->mc_count * ETH_ALEN;
+ /* 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;
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_set_sg --
- *
- * Ethtool op to change Scatter/gather IO feature.
- *
- * Results:
- * 0 on success.
- *
- * Side effects:
- * Change SG feature on any VLAN interfaces associated with netdev.
- *
- *----------------------------------------------------------------------------
- */
+ 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 int
-vmxnet3_set_sg(struct net_device *netdev, uint32 val)
+
+static void
+vmxnet3_set_mc(struct net_device *netdev)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- ethtool_op_set_sg(netdev, val);
- vmxnet3_vlan_features(adapter, 0, TRUE);
- return 0;
-}
+ struct vmxnet3_adapter *adapter = compat_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;
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_set_tso --
- *
- * Ethtool op to change TCP Segmentation Offload feature.
- *
- * Results:
- * 0 on success.
- *
- * Side effects:
- * Change TSO feature on any VLAN interfaces associated with netdev.
- *
- *----------------------------------------------------------------------------
- */
+ if (netdev->flags & IFF_BROADCAST)
+ new_mode |= VMXNET3_RXM_BCAST;
-static int
-vmxnet3_set_tso(struct net_device *netdev, uint32 val)
-{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- ethtool_op_set_tso(netdev, val);
- vmxnet3_vlan_features(adapter, 0, TRUE);
- return 0;
-}
+ 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;
+ }
+ }
-/* per tq stats maintained by the device */
-static const struct vmxnet3_stat_desc
-vmxnet3_tq_dev_stats[] = {
- /* description, offset */
- { "TSO pkts tx", offsetof(UPT1_TxStats, TSOPktsTxOK) },
- { "TSO bytes tx", offsetof(UPT1_TxStats, TSOBytesTxOK) },
- { "ucast pkts tx", offsetof(UPT1_TxStats, ucastPktsTxOK) },
- { "ucast bytes tx", offsetof(UPT1_TxStats, ucastBytesTxOK) },
- { "mcast pkts tx", offsetof(UPT1_TxStats, mcastPktsTxOK) },
- { "mcast bytes tx", offsetof(UPT1_TxStats, mcastBytesTxOK) },
- { "bcast pkts tx", offsetof(UPT1_TxStats, bcastPktsTxOK) },
- { "bcast bytes tx", offsetof(UPT1_TxStats, bcastBytesTxOK) },
- { "pkts tx err", offsetof(UPT1_TxStats, pktsTxError) },
- { "pkts tx discard", offsetof(UPT1_TxStats, pktsTxDiscard) },
-};
+ if (!(new_mode & VMXNET3_RXM_MCAST)) {
+ rxConf->mfTableLen = 0;
+ rxConf->mfTablePA = 0;
+ }
-/* per tq stats maintained by the driver */
-static const struct vmxnet3_stat_desc
-vmxnet3_tq_driver_stats[] = {
- /* description, offset */
- { "drv dropped tx total", offsetof(struct vmxnet3_tq_driver_stats, drop_total) },
- { " too many frags", offsetof(struct vmxnet3_tq_driver_stats, drop_too_many_frags) },
- { " giant hdr", offsetof(struct vmxnet3_tq_driver_stats, drop_oversized_hdr) },
- { " hdr err", offsetof(struct vmxnet3_tq_driver_stats, drop_hdr_inspect_err) },
- { " tso", offsetof(struct vmxnet3_tq_driver_stats, drop_tso) },
- { "ring full", offsetof(struct vmxnet3_tq_driver_stats, tx_ring_full) },
- { "pkts linearized", offsetof(struct vmxnet3_tq_driver_stats, linearized) },
- { "hdr cloned", offsetof(struct vmxnet3_tq_driver_stats, copy_skb_header) },
- { "giant hdr", offsetof(struct vmxnet3_tq_driver_stats, oversized_hdr) },
-};
+ if (new_mode != rxConf->rxMode) {
+ rxConf->rxMode = new_mode;
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_RX_MODE);
+ }
-/* per rq stats maintained by the device */
-static const struct vmxnet3_stat_desc
-vmxnet3_rq_dev_stats[] = {
- { "LRO pkts rx", offsetof(UPT1_RxStats, LROPktsRxOK) },
- { "LRO byte rx", offsetof(UPT1_RxStats, LROBytesRxOK) },
- { "ucast pkts rx", offsetof(UPT1_RxStats, ucastPktsRxOK) },
- { "ucast bytes rx", offsetof(UPT1_RxStats, ucastBytesRxOK) },
- { "mcast pkts rx", offsetof(UPT1_RxStats, mcastPktsRxOK) },
- { "mcast bytes rx", offsetof(UPT1_RxStats, mcastBytesRxOK) },
- { "bcast pkts rx", offsetof(UPT1_RxStats, bcastPktsRxOK) },
- { "bcast bytes rx", offsetof(UPT1_RxStats, bcastBytesRxOK) },
- { "pkts rx out of buf", offsetof(UPT1_RxStats, pktsRxOutOfBuf) },
- { "pkts rx err", offsetof(UPT1_RxStats, pktsRxError) },
-};
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_MAC_FILTERS);
-/* per rq stats maintained by the driver */
-static const struct vmxnet3_stat_desc
-vmxnet3_rq_driver_stats[] = {
- /* description, offset */
- { "drv dropped rx total", offsetof(struct vmxnet3_rq_driver_stats, drop_total) },
- { " err", offsetof(struct vmxnet3_rq_driver_stats, drop_err) },
- { " fcs", offsetof(struct vmxnet3_rq_driver_stats, drop_fcs) },
- { "rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats, rx_buf_alloc_failure) },
-};
+ kfree(new_table);
+}
-/* gloabl stats maintained by the driver */
-static const struct vmxnet3_stat_desc
-vmxnet3_global_stats[] = {
- /* description, offset */
- { "tx timeout count", offsetof(struct vmxnet3_adapter, tx_timeout_count) }
-};
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_stats --
- *
- * Collect the device and driver statistics and present in the
- * net_device_stats format.
- *
- * Results:
- * Pointer to the net_device_stats struct in the adapter.
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
+ * Wipes out the whole driver_shared area and re-initializes it
*/
-
-static struct net_device_stats*
-vmxnet3_get_stats(struct net_device *netdev)
+static void
+vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter)
{
- struct vmxnet3_adapter *adapter;
- struct vmxnet3_tq_driver_stats *drvTxStats;
- struct vmxnet3_rq_driver_stats *drvRxStats;
- UPT1_TxStats *devTxStats;
- UPT1_RxStats *devRxStats;
-
- adapter = compat_netdev_priv(netdev);
+ 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 */
+}
+
+/*
+ * put the vNIC into an operational state. After this function finishes, the
+ * adapter is fully functional. It does the following:
+ * 1. initialize tq and rq
+ * 2. fill rx rings with rx buffers
+ * 3. setup intr
+ * 4. setup driver_shared
+ * 5. activate the dev
+ * 6. signal the stack that the vNIC is ready to tx/rx
+ * 7. enable intrs for the vNIC
+ *
+ * Returns:
+ * 0 if the vNIC is in operation state
+ * error code if any intermediate step fails.
+ */
- /* Collect the dev stats into the shared area */
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
+int
+vmxnet3_activate_dev(struct vmxnet3_adapter *adapter)
+{
+ int err;
+ u32 ret;
+
+ dev_dbg(&adapter->pdev->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);
+#ifdef VMXNET3_NAPI
+ compat_napi_enable(adapter->netdev, &adapter->napi);
+#endif
+ vmxnet3_enable_all_intrs(adapter);
+ clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
+ return 0;
- /* Assuming that we have a single queue device */
- devTxStats = &adapter->tqd_start->stats;
- devRxStats = &adapter->rqd_start->stats;
+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;
+}
- /* Get access to the driver stats per queue */
- drvTxStats = &adapter->tx_queue.stats;
- drvRxStats = &adapter->rx_queue.stats;
- memset(&adapter->net_stats, 0, sizeof(adapter->net_stats));
+void
+vmxnet3_reset_dev(struct vmxnet3_adapter *adapter)
+{
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
+}
- adapter->net_stats.rx_packets = devRxStats->ucastPktsRxOK +
- devRxStats->mcastPktsRxOK +
- devRxStats->bcastPktsRxOK;
- adapter->net_stats.tx_packets = devTxStats->ucastPktsTxOK +
- devTxStats->mcastPktsTxOK +
- devTxStats->bcastPktsTxOK;
+/*
+ * Stop the device. After this function returns, the adapter stop pkt tx/rx
+ * and won't generate intrs. The stack won't try to xmit pkts through us,
+ * nor will it poll us for pkts. It does the following:
+ *
+ * 1. ask the vNIC to quiesce
+ * 2. disable the vNIC from generating intrs
+ * 3. free intr
+ * 4. stop the stack from xmiting pkts thru us and polling
+ * 5. free rx buffers
+ * 6. tx complete pkts pending
+ *
+ */
- adapter->net_stats.rx_bytes = devRxStats->ucastBytesRxOK +
- devRxStats->mcastBytesRxOK +
- devRxStats->bcastBytesRxOK;
+int
+vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter)
+{
+ if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state))
+ return 0;
- adapter->net_stats.tx_bytes = devTxStats->ucastBytesTxOK +
- devTxStats->mcastBytesTxOK +
- devTxStats->bcastBytesTxOK;
- adapter->net_stats.rx_errors = devRxStats->pktsRxError;
- adapter->net_stats.tx_errors = devTxStats->pktsTxError;
- adapter->net_stats.rx_dropped = drvRxStats->drop_total;
- adapter->net_stats.tx_dropped = drvTxStats->drop_total;
- adapter->net_stats.multicast = devRxStats->mcastPktsRxOK;
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_QUIESCE_DEV);
+ vmxnet3_disable_all_intrs(adapter);
+#ifdef VMXNET3_NAPI
+ compat_napi_disable(adapter->netdev, &adapter->napi);
+#endif
+ netif_tx_disable(adapter->netdev);
+ adapter->link_speed = 0;
+ netif_carrier_off(adapter->netdev);
- return &adapter->net_stats;
+ vmxnet3_tq_cleanup(&adapter->tx_queue, adapter);
+ vmxnet3_rq_cleanup(&adapter->rx_queue, adapter);
+ vmxnet3_free_irqs(adapter);
+ return 0;
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_stats_count --
- *
- * Return the number of counters we will return in vmxnet3_get_ethtool_stats.
- * Assume each counter is uint64
- *
- * Result:
- * # of counters we will return in vmxnet3_get_ethtool_stats
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-static int
-vmxnet3_get_stats_count(struct net_device *netdev)
+static void
+vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac)
{
- return ARRAY_SIZE(vmxnet3_tq_dev_stats) +
- ARRAY_SIZE(vmxnet3_tq_driver_stats) +
- ARRAY_SIZE(vmxnet3_rq_dev_stats) +
- ARRAY_SIZE(vmxnet3_rq_driver_stats) +
- ARRAY_SIZE(vmxnet3_global_stats);
+ 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);
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_regs_len --
- *
- * Return the size of buffer needed to dump registers.
- *
- * Result:
- * The number of bytes needed.
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
static int
-vmxnet3_get_regs_len(struct net_device *netdev)
+vmxnet3_set_mac_addr(struct net_device *netdev, void *p)
{
- return 20 * sizeof(uint32);
+ struct sockaddr *addr = p;
+ struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
+
+ memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+ vmxnet3_write_mac_addr(adapter, addr->sa_data);
+
+ return 0;
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_drvinfo --
- *
- * Ethtool callback to return driver information
- *
- * Result:
- * None
- *
- * Side-effects:
- * 1. *drvinfo is updated
- *
- *----------------------------------------------------------------------------
- */
+/* ==================== initialization and cleanup routines ============ */
-static void
-vmxnet3_get_drvinfo(struct net_device *netdev,
- struct ethtool_drvinfo *drvinfo)
+static int
+vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, Bool *dma64)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
-
- strncpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
- drvinfo->driver[sizeof(drvinfo->driver) - 1] = '\0';
+ int err;
+ unsigned long mmio_start, mmio_len;
+ struct pci_dev *pdev = adapter->pdev;
- strncpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT, sizeof(drvinfo->version));
- drvinfo->driver[sizeof(drvinfo->version) - 1] = '\0';
+ err = compat_pci_enable_device(pdev);
+ if (err) {
+ printk(KERN_ERR "Failed to enable adapter %s: error %d\n",
+ compat_pci_name(pdev), err);
+ return err;
+ }
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 6)
+ 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", compat_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", compat_pci_name(pdev));
+ err = -EIO;
+ goto err_set_mask;
+ }
+ *dma64 = FALSE;
+ }
+#else
+ *dma64 = TRUE;
+#endif
- strncpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
- drvinfo->fw_version[sizeof(drvinfo->fw_version) - 1] = '\0';
+ err = compat_pci_request_regions(pdev, vmxnet3_driver_name);
+ if (err) {
+ printk(KERN_ERR "Failed to request region for adapter %s: "
+ "error %d\n", compat_pci_name(pdev), err);
+ goto err_set_mask;
+ }
+
+ compat_pci_set_master(pdev);
+
+ mmio_start = compat_pci_resource_start(pdev, 0);
+ mmio_len = compat_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",
+ compat_pci_name(pdev));
+ err = -EIO;
+ goto err_ioremap;
+ }
+
+ mmio_start = compat_pci_resource_start(pdev, 1);
+ mmio_len = compat_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",
+ compat_pci_name(pdev));
+ err = -EIO;
+ goto err_bar1;
+ }
+ return 0;
- strncpy(drvinfo->bus_info, compat_pci_name(adapter->pdev), ETHTOOL_BUSINFO_LEN);
- drvinfo->n_stats = vmxnet3_get_stats_count(netdev);
- drvinfo->testinfo_len = 0;
- drvinfo->eedump_len = 0;
- drvinfo->regdump_len = vmxnet3_get_regs_len(netdev);
+err_bar1:
+ iounmap(adapter->hw_addr0);
+err_ioremap:
+ compat_pci_release_regions(pdev);
+err_set_mask:
+ compat_pci_disable_device(pdev);
+ return err;
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_strings --
- *
- * Return the description strings for the counters returned by
- * vmxnet3_get_ethtool_stats.
- *
- * Result:
- * None
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
static void
-vmxnet3_get_strings(struct net_device *netdev,
- u32 stringset,
- u8 *buf)
+vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter)
{
- if (stringset == ETH_SS_STATS) {
- int i;
-
- for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++) {
- memcpy(buf, vmxnet3_tq_dev_stats[i].desc, ETH_GSTRING_LEN);
- buf += ETH_GSTRING_LEN;
- }
- for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++) {
- memcpy(buf, vmxnet3_tq_driver_stats[i].desc, ETH_GSTRING_LEN);
- buf += ETH_GSTRING_LEN;
- }
- for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++) {
- memcpy(buf, vmxnet3_rq_dev_stats[i].desc, ETH_GSTRING_LEN);
- buf += ETH_GSTRING_LEN;
- }
- for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++) {
- memcpy(buf, vmxnet3_rq_driver_stats[i].desc, ETH_GSTRING_LEN);
- buf += ETH_GSTRING_LEN;
- }
- for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++) {
- memcpy(buf, vmxnet3_global_stats[i].desc, ETH_GSTRING_LEN);
- buf += ETH_GSTRING_LEN;
- }
- }
+ BUG_ON(!adapter->pdev);
+
+ iounmap(adapter->hw_addr0);
+ iounmap(adapter->hw_addr1);
+ compat_pci_release_regions(adapter->pdev);
+ compat_pci_disable_device(adapter->pdev);
}
+
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_ethtool_stats --
- *
- * Return the values of the maintained counters in 'buf'
- *
- * Result:
- * None
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
+ * Calculate the # of buffers for a pkt based on mtu, then adjust the size of
+ * the 1st rx ring accordingly
*/
static void
-vmxnet3_get_ethtool_stats(struct net_device *netdev,
- struct ethtool_stats *stats,
- u64 *buf)
+vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- uint8 *base;
- int i;
-
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
-
- /* this does assume each counter is 64-bit wide */
-
- base = (uint8*)&adapter->tqd_start->stats;
- for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++) {
- *buf++ = *(uint64*)(base + vmxnet3_tq_dev_stats[i].offset);
- }
-
- base = (uint8*)&adapter->tx_queue.stats;
- for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++) {
- *buf++ = *(uint64*)(base + vmxnet3_tq_driver_stats[i].offset);
- }
-
- base = (uint8*)&adapter->rqd_start->stats;
- for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++) {
- *buf++ = *(uint64*)(base + vmxnet3_rq_dev_stats[i].offset);
- }
-
- base = (uint8*)&adapter->rx_queue.stats;
- for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++) {
- *buf++ = *(uint64*)(base + vmxnet3_rq_driver_stats[i].offset);
- }
-
- base = (uint8*)adapter;
- for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++) {
- *buf++ = *(uint64*)(base + vmxnet3_global_stats[i].offset);
- }
-}
+ 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;
+ }
+
+ if (adapter->is_shm) {
+ adapter->skb_buf_size = 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);
+}
+
+/* Create the specified number of tx queues and rx queues. On failure, it
+ * destroys the queues created. */
+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;
+}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_regs --
- *
- * Dump out the register values.
- *
- * Result:
- * None
- *
- * Side-effects:
- * None
- *
- *----------------------------------------------------------------------------
+ * setup rings, allocate necessary resources, request for IRQs, configure
+ * the device. The device is functional after this function finishes
+ * successfully.
+ * Returns 0 on success, negative errno value on failure
*/
-static void
-vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
+static int
+vmxnet3_open(struct net_device *netdev)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- uint32 *buf = p;
-
- memset(p, 0, vmxnet3_get_regs_len(netdev));
+ struct vmxnet3_adapter *adapter;
+ int err;
- regs->version = 1;
+ adapter = compat_netdev_priv(netdev);
- /* Update vmxnet3_get_regs_len if we want to dump more registers */
+ spin_lock_init(&adapter->tx_queue.tx_lock);
- /* make each ring use multiple of 16 bytes */
- buf[0] = adapter->tx_queue.tx_ring.next2fill;
- buf[1] = adapter->tx_queue.tx_ring.next2comp;
- buf[2] = adapter->tx_queue.tx_ring.gen;
- buf[3] = 0;
+ if (adapter->is_shm) {
+ printk(KERN_INFO "bringing up shared memory vmxnet3 %s\n",
+ netdev->name);
+ err = vmxnet3_shm_open(adapter, netdev->name);
+ if (err) {
+ goto shm_err;
+ }
+ }
+ 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;
- buf[4] = adapter->tx_queue.comp_ring.next2proc;
- buf[5] = adapter->tx_queue.comp_ring.gen;
- buf[6] = adapter->tx_queue.stopped;
- buf[7] = 0;
+ err = vmxnet3_activate_dev(adapter);
+ if (err)
+ goto activate_err;
- buf[8] = adapter->rx_queue.rx_ring[0].next2fill;
- buf[9] = adapter->rx_queue.rx_ring[0].next2comp;
- buf[10] = adapter->rx_queue.rx_ring[0].gen;
- buf[11] = 0;
+ COMPAT_NETDEV_MOD_INC_USE_COUNT;
- buf[12] = adapter->rx_queue.rx_ring[1].next2fill;
- buf[13] = adapter->rx_queue.rx_ring[1].next2comp;
- buf[14] = adapter->rx_queue.rx_ring[1].gen;
- buf[15] = 0;
+ return 0;
- buf[16] = adapter->rx_queue.comp_ring.next2proc;
- buf[17] = adapter->rx_queue.comp_ring.gen;
- buf[18] = 0;
- buf[19] = 0;
+activate_err:
+ vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
+ vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
+queue_err:
+ if (adapter->is_shm) {
+ vmxnet3_shm_close(adapter);
+ }
+shm_err:
+ return err;
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_wol --
- *
- * Report whether Wake-on-Lan is enabled.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------------
- */
-
-static void
-vmxnet3_get_wol(struct net_device *netdev,
- struct ethtool_wolinfo *wol)
+static int
+vmxnet3_close(struct net_device *netdev)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
+ struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
- wol->wolopts = adapter->wol;
-}
+ /*
+ * 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))
+ compat_msleep(1);
+ vmxnet3_quiesce_dev(adapter);
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_set_wol --
- *
- * Turn Wake-on-Lan on or off.
- *
- * Results:
- * 0 on success, errno on failure.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------------
- */
+ if (adapter->is_shm) {
+ vmxnet3_shm_close(adapter);
+ }
-static int
-vmxnet3_set_wol(struct net_device *netdev,
- struct ethtool_wolinfo *wol)
-{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
+ vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
+ vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
- if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
- WAKE_MAGICSECURE)) {
- return -EOPNOTSUPP;
- }
+ COMPAT_NETDEV_MOD_DEC_USE_COUNT;
- adapter->wol = wol->wolopts;
+ clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
- compat_device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
- return 0;
+ return 0;
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_settings --
- *
- * Get device-specific settings.
- *
- * Results:
- * 0 on success, errno on failure.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------------
+ * Called to forcibly close the device when the driver failed to re-activate it.
*/
+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));
+
+#ifdef VMXNET3_NAPI
+ /* we need to enable NAPI, otherwise dev_close will deadlock */
+ compat_napi_enable(adapter->netdev, &adapter->napi);
+#endif
+ dev_close(adapter->netdev);
+}
+
static int
-vmxnet3_get_settings(struct net_device *netdev,
- struct ethtool_cmd *ecmd)
+vmxnet3_change_mtu(struct net_device *netdev, int new_mtu)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
-
- ecmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full |
- SUPPORTED_TP;
- ecmd->advertising = ADVERTISED_TP;
- ecmd->port = PORT_TP;
- ecmd->transceiver = XCVR_INTERNAL;
-
- if (adapter->link_speed) {
- ecmd->speed = adapter->link_speed;
- ecmd->duplex = DUPLEX_FULL;
- } else {
- ecmd->speed = -1;
- ecmd->duplex = -1;
- }
- return 0;
+ struct vmxnet3_adapter *adapter = compat_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))
+ compat_msleep(1);
+
+ if (compat_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;
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_get_ringparam --
- *
- * Get ring sizes
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------------
- */
static void
-vmxnet3_get_ringparam(struct net_device *netdev,
- struct ethtool_ringparam *param)
+vmxnet3_declare_features(struct vmxnet3_adapter *adapter, Bool dma64)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
+ struct net_device *netdev = adapter->netdev;
- param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
- param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
- param->rx_mini_max_pending = 0;
- param->rx_jumbo_max_pending = 0;
+ 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;
+ printk(KERN_INFO "features: sg csum vlan jf tso");
- param->rx_pending = adapter->rx_queue.rx_ring[0].size;
- param->tx_pending = adapter->tx_queue.tx_ring.size;
- param->rx_mini_pending = 0;
- param->rx_jumbo_pending = 0;
-}
+ adapter->rxcsum = TRUE;
+ adapter->jumbo_frame = TRUE;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
+ /* LRO feature control by module param */
+ if (!disable_lro) {
+#else
+ /* LRO feature control by ethtool */
+ netdev->features |= NETIF_F_LRO;
+#endif
+ adapter->lro = TRUE;
+ printk(" lro");
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_set_ringparam --
- *
- * Set ring sizes
- *
- * Results:
- * 0 on success or errno.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------------
- */
-static int
-vmxnet3_set_ringparam(struct net_device *netdev,
- struct ethtool_ringparam *param)
-{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- uint32 new_tx_ring_size, new_rx_ring_size;
- uint32 sz;
- int err = 0;
-
- if (param->tx_pending == 0 || param->tx_pending > VMXNET3_TX_RING_MAX_SIZE) {
- printk(KERN_ERR "%s: invalid tx ring size %u\n", netdev->name, param->tx_pending);
- return -EINVAL;
- }
- if (param->rx_pending == 0 || param->rx_pending > VMXNET3_RX_RING_MAX_SIZE) {
- printk(KERN_ERR "%s: invalid rx ring size %u\n", netdev->name, param->rx_pending);
- return -EINVAL;
- }
-
- /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
- new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
- ~VMXNET3_RING_SIZE_MASK;
- new_tx_ring_size = min_t(uint32, new_tx_ring_size, VMXNET3_TX_RING_MAX_SIZE);
- VMXNET3_ASSERT(new_tx_ring_size <= VMXNET3_TX_RING_MAX_SIZE);
- VMXNET3_ASSERT(new_tx_ring_size % VMXNET3_RING_SIZE_ALIGN == 0);
-
- /* ring0 has to be a multiple of rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN */
- sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
- new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
- new_rx_ring_size = min_t(uint32, new_rx_ring_size,
- VMXNET3_RX_RING_MAX_SIZE / sz * sz);
- VMXNET3_ASSERT(new_rx_ring_size <= VMXNET3_RX_RING_MAX_SIZE);
- VMXNET3_ASSERT(new_rx_ring_size % sz == 0);
-
- if (new_tx_ring_size == adapter->tx_queue.tx_ring.size &&
- new_rx_ring_size == adapter->rx_queue.rx_ring[0].size) {
- return 0;
- }
-
- /*
- * 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)) {
- compat_msleep(1);
- }
-
- if (compat_netif_running(netdev)) {
- vmxnet3_quiesce_dev(adapter);
- vmxnet3_reset_dev(adapter);
-
- /* recreate the rx queue and the tx queue based on the new sizes */
- vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
- vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
-
- err = vmxnet3_create_queues(adapter, new_tx_ring_size, new_rx_ring_size,
- VMXNET3_DEF_RX_RING_SIZE);
- if (err) {
- /* failed, most likely because of OOM, try the default size */
- printk(KERN_ERR "%s: failed to apply new sizes, try the default ones\n",
- netdev->name);
- err = vmxnet3_create_queues(adapter, VMXNET3_DEF_TX_RING_SIZE,
- VMXNET3_DEF_RX_RING_SIZE, VMXNET3_DEF_RX_RING_SIZE);
- if (err) {
- printk(KERN_ERR "%s: failed to create queues with default sizes. Closing it\n",
- netdev->name);
- 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;
- }
- }
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
+ }
+#endif
-out:
- clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
- if (err) {
- vmxnet3_force_close(adapter);
- }
- return err;
+#ifdef NETIF_F_TSO6
+ netdev->features |= NETIF_F_TSO6;
+ printk(" tsoIPv6");
+#endif
+
+ if (dma64) {
+ netdev->features |= NETIF_F_HIGHDMA;
+ printk(" highDMA");
+ }
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
+ netdev->vlan_features = netdev->features;
+#endif
+ printk("\n");
}
-static struct ethtool_ops
-vmxnet3_ethtool_ops = {
- .get_settings = vmxnet3_get_settings,
- .get_drvinfo = vmxnet3_get_drvinfo,
- .get_regs_len = vmxnet3_get_regs_len,
- .get_regs = vmxnet3_get_regs,
- .get_wol = vmxnet3_get_wol,
- .set_wol = vmxnet3_set_wol,
- .get_link = ethtool_op_get_link,
- .get_rx_csum = vmxnet3_get_rx_csum,
- .set_rx_csum = vmxnet3_set_rx_csum,
- .get_tx_csum = vmxnet3_get_tx_csum,
- .set_tx_csum = vmxnet3_set_tx_csum,
- .get_sg = ethtool_op_get_sg,
- .set_sg = vmxnet3_set_sg,
- .get_tso = ethtool_op_get_tso,
- .set_tso = vmxnet3_set_tso,
- .get_strings = vmxnet3_get_strings,
- .get_stats_count = vmxnet3_get_stats_count,
- .get_ethtool_stats = vmxnet3_get_ethtool_stats,
- .get_ringparam = vmxnet3_get_ringparam,
- .set_ringparam = vmxnet3_set_ringparam,
-};
+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;
+}
+
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_alloc_intr_resources --
- *
- * read the intr configuration, pick the intr type, and enable MSI/MSI-X if
- * needed.
- *
- * Results:
- * None
- *
- * Side effects:
- * adapter->intr.{type, mask_mode, num_intr} are modified
- *
- *----------------------------------------------------------------------------
+ * read the intr configuration, pick the intr type, and enable MSI/MSI-X if
+ * needed. adapter->intr.{type, mask_mode, num_intr} are modified
*/
-
+
static void
vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter)
{
- uint32 cfg;
+ 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;
+ /* 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;
#ifdef CONFIG_PCI_MSI
- if (adapter->intr.type == VMXNET3_IT_AUTO) {
+ if (adapter->intr.type == VMXNET3_IT_AUTO) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
- /* start with MSI-X */
- adapter->intr.type = VMXNET3_IT_MSIX;
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
- adapter->intr.type = VMXNET3_IT_MSI;
-#else
- adapter->intr.type = VMXNET3_IT_INTX;
+ /* start with MSI-X */
+ adapter->intr.type = VMXNET3_IT_MSIX;
+ adapter->intr.msix_entries[0].entry = 0;
+ if (!pci_enable_msix(adapter->pdev, adapter->intr.msix_entries,
+ VMXNET3_LINUX_MAX_MSIX_VECT)) {
+ adapter->intr.num_intrs = 1;
+ return;
+ }
#endif
- }
-
- if (adapter->intr.type == VMXNET3_IT_MSIX) {
- int err;
-
- 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;
- return;
- }
-
- printk(KERN_INFO "Failed to enable MSI-X for %s, error %d, try MSI\n",
- adapter->netdev->name, err);
- adapter->intr.type = VMXNET3_IT_MSI;
- }
-
- if (adapter->intr.type == VMXNET3_IT_MSI) {
- int err;
-
- err = pci_enable_msi(adapter->pdev);
- if (!err) {
- adapter->intr.num_intrs = 1;
- return;
- }
-
- printk(KERN_INFO "Failed to enable MSI for %s, error %d, use INTx\n",
- adapter->netdev->name, err);
- adapter->intr.type = VMXNET3_IT_INTX;
- }
-#else
- adapter->intr.type = VMXNET3_IT_INTX;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
+ adapter->intr.type = VMXNET3_IT_MSI;
+ if (!pci_enable_msi(adapter->pdev)) {
+ adapter->intr.num_intrs = 1;
+ return;
+ }
#endif
+ }
+#endif
+ adapter->intr.type = VMXNET3_IT_INTX;
- /* INT-X related setting */
- adapter->intr.num_intrs = 1;
+ /* INT-X related setting */
+ adapter->intr.num_intrs = 1;
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_free_intr_resources --
- *
- * disable MSI/MSI-X if previously enabled
- *
- * Results:
- * None
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
static void
vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter)
{
#ifdef CONFIG_PCI_MSI
- 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
+ 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
#endif
- {
- VMXNET3_ASSERT(adapter->intr.type == VMXNET3_IT_INTX);
- }
+ {
+ BUG_ON(adapter->intr.type != VMXNET3_IT_INTX);
+ }
+
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_tx_timeout --
- *
- * Called when the stack detects a Tx hang.
- *
- * Results:
- * None
- *
- * Side effects:
- * schedule a job to reset the device
- *
- *----------------------------------------------------------------------------
+ * Called when the stack detects a Tx hang. Schedule a job to reset the device
*/
static void
vmxnet3_tx_timeout(struct net_device *netdev)
{
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- adapter->tx_timeout_count++;
+ struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
+ adapter->tx_timeout_count++;
- printk(KERN_ERR "%s: tx hang\n", adapter->netdev->name);
- compat_schedule_work(&adapter->work);
+ printk(KERN_ERR "%s: tx hang\n", adapter->netdev->name);
+ compat_schedule_work(&adapter->work);
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_reset_work --
- *
- * Reset the device
- *
- * Results:
- * None
- *
- * Side effects:
- * None
- *
- *----------------------------------------------------------------------------
- */
-
static void
vmxnet3_reset_work(compat_work_arg data)
{
- struct vmxnet3_adapter *adapter;
-
- adapter = COMPAT_WORK_GET_DATA(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)) {
- printk(KERN_INFO "%s: resetting already in progress\n", adapter->netdev->name);
- 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);
+ struct vmxnet3_adapter *adapter;
+
+ adapter = COMPAT_WORK_GET_DATA(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);
}
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_probe_device --
- *
- * initialize a vmxnet3 device
- *
- * Result:
- * 0 on success, negative errno code otherwise
- *
- * Side-effects:
- * Initialize the h/w and allocate necessary resources
- *
- *----------------------------------------------------------------------------
+ * Initialize a vmxnet3 device. Returns 0 on success, negative errno code
+ * otherwise. Initialize the h/w and allocate necessary resources
*/
-static int
+static int __devinit
vmxnet3_probe_device(struct pci_dev *pdev,
- const struct pci_device_id *id)
+ const struct pci_device_id *id)
{
#ifdef HAVE_NET_DEVICE_OPS
- 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
- };
-#endif /* HAVE_NET_DEVICE_OPS */
- int err;
- Bool dma64 = FALSE; /* stupid gcc */
- uint32 ver;
- struct net_device *netdev;
- struct vmxnet3_adapter *adapter;
- uint8 mac[ETH_ALEN];
-
- netdev = compat_alloc_etherdev(sizeof(struct vmxnet3_adapter));
- if (!netdev) {
- printk(KERN_ERR "Failed to alloc ethernet device for adapter %s\n",
- compat_pci_name(pdev));
- return -ENOMEM;
- }
-
- pci_set_drvdata(pdev, netdev);
- adapter = compat_netdev_priv(netdev);
- adapter->netdev = netdev;
- adapter->pdev = pdev;
-
- adapter->shared = pci_alloc_consistent(adapter->pdev,
- sizeof(Vmxnet3_DriverShared),
- &adapter->shared_pa);
- if (!adapter->shared) {
- printk(KERN_ERR "Failed to allocate memory for %s\n", compat_pci_name(pdev));
- err = -ENOMEM;
- goto err_alloc_shared;
- }
-
- adapter->tqd_start = pci_alloc_consistent(adapter->pdev,
- sizeof(Vmxnet3_TxQueueDesc) + sizeof(Vmxnet3_RxQueueDesc),
- &adapter->queue_desc_pa);
- if (!adapter->tqd_start) {
- printk(KERN_ERR "Failed to allocate memory for %s\n", compat_pci_name(pdev));
- err = -ENOMEM;
- goto err_alloc_queue_desc;
- }
- adapter->rqd_start = (Vmxnet3_RxQueueDesc *)(adapter->tqd_start + 1);
-
- adapter->pm_conf = kmalloc(sizeof(Vmxnet3_PMConf), GFP_KERNEL);
- if (adapter->pm_conf == NULL) {
- printk(KERN_ERR "Failed to allocate memory for %s\n", compat_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, compat_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, compat_pci_name(pdev));
- err = -EBUSY;
- goto err_ver;
- }
-
- vmxnet3_declare_features(adapter, dma64);
-
- adapter->dev_number = devices_found;
- adapter->is_shm = FALSE;
- if (adapter->dev_number < VMXNET3_SHM_MAX_DEVICES) {
- if (enable_shm[adapter->dev_number] == 1) {
- if (!correct_shm_disclaimer) {
- printk(KERN_ERR "Did not activate shm, disclaimer missing\n");
- } else {
- adapter->is_shm = TRUE;
- }
- }
- }
-
- vmxnet3_alloc_intr_resources(adapter);
-
- vmxnet3_read_mac_addr(adapter, mac);
- memcpy(netdev->dev_addr, mac, netdev->addr_len);
+ 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
+ };
+#endif /* HAVE_NET_DEVICE_OPS */
+ int err;
+ Bool dma64 = FALSE; /* stupid gcc */
+ u32 ver;
+ struct net_device *netdev;
+ struct vmxnet3_adapter *adapter;
+ u8 mac[ETH_ALEN];
+
+ netdev = compat_alloc_etherdev(sizeof(struct vmxnet3_adapter));
+ if (!netdev) {
+ printk(KERN_ERR "Failed to alloc ethernet device %s\n",
+ compat_pci_name(pdev));
+ return -ENOMEM;
+ }
+
+ pci_set_drvdata(pdev, netdev);
+ adapter = compat_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",
+ compat_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",
+ compat_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",
+ compat_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, compat_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, compat_pci_name(pdev));
+ err = -EBUSY;
+ goto err_ver;
+ }
+
+ vmxnet3_declare_features(adapter, dma64);
+
+ adapter->dev_number = atomic_read(&devices_found);
+ adapter->is_shm = FALSE;
+ if (adapter->dev_number < VMXNET3_SHM_MAX_DEVICES) {
+ if (enable_shm[adapter->dev_number] == 1) {
+ if (!correct_shm_disclaimer) {
+ printk(KERN_ERR "Did not activate shm, "
+ "disclaimer missing\n");
+ } else {
+ adapter->is_shm = TRUE;
+ }
+ }
+ }
+
+ vmxnet3_alloc_intr_resources(adapter);
+
+ vmxnet3_read_mac_addr(adapter, mac);
+ memcpy(netdev->dev_addr, mac, netdev->addr_len);
#ifdef HAVE_NET_DEVICE_OPS
- netdev->netdev_ops = &vmxnet3_netdev_ops;
+ netdev->netdev_ops = &vmxnet3_netdev_ops;
#else
- netdev->open = vmxnet3_open;
- netdev->stop = vmxnet3_close;
- netdev->hard_start_xmit = vmxnet3_xmit_frame;
- netdev->set_mac_address = vmxnet3_set_mac_addr;
- netdev->change_mtu = vmxnet3_change_mtu;
- netdev->get_stats = vmxnet3_get_stats;
- netdev->tx_timeout = vmxnet3_tx_timeout;
- netdev->set_multicast_list = vmxnet3_set_mc;
- netdev->vlan_rx_register = vmxnet3_vlan_rx_register;
- netdev->vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid;
- netdev->vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid;
+ netdev->open = vmxnet3_open;
+ netdev->stop = vmxnet3_close;
+ netdev->hard_start_xmit = vmxnet3_xmit_frame;
+ netdev->set_mac_address = vmxnet3_set_mac_addr;
+ netdev->change_mtu = vmxnet3_change_mtu;
+ netdev->get_stats = vmxnet3_get_stats;
+ netdev->tx_timeout = vmxnet3_tx_timeout;
+ netdev->set_multicast_list = vmxnet3_set_mc;
+ netdev->vlan_rx_register = vmxnet3_vlan_rx_register;
+ netdev->vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid;
+ netdev->vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid;
#ifdef CONFIG_NET_POLL_CONTROLLER
- netdev->poll_controller = vmxnet3_netpoll;
+ netdev->poll_controller = vmxnet3_netpoll;
#endif
-#endif /* HAVE_NET_DEVICE_OPS */
-
- netdev->watchdog_timeo = 5 * HZ;
- SET_ETHTOOL_OPS(netdev, &vmxnet3_ethtool_ops);
+#endif /* HAVE_NET_DEVICE_OPS */
+ netdev->watchdog_timeo = 5 * HZ;
+ vmxnet3_set_ethtool_ops(netdev);
- COMPAT_INIT_WORK(&adapter->work, vmxnet3_reset_work, adapter);
+ COMPAT_INIT_WORK(&adapter->work, vmxnet3_reset_work, adapter);
#ifdef VMXNET3_NAPI
- compat_netif_napi_add(netdev, &adapter->napi, vmxnet3_poll, 64);
+ compat_netif_napi_add(netdev, &adapter->napi, vmxnet3_poll, 64);
#endif
- COMPAT_SET_MODULE_OWNER(netdev);
- COMPAT_SET_NETDEV_DEV(netdev, &pdev->dev);
+ COMPAT_SET_MODULE_OWNER(netdev);
+ COMPAT_SET_NETDEV_DEV(netdev, &pdev->dev);
- err = register_netdev(netdev);
- if (err) {
- printk(KERN_ERR "Failed to register adapter %s\n", compat_pci_name(pdev));
- goto err_register;
- }
+ err = register_netdev(netdev);
+ if (err) {
+ printk(KERN_ERR "Failed to register adapter %s\n",
+ compat_pci_name(pdev));
+ goto err_register;
+ }
- set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
- devices_found++;
- return 0;
+ set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
+ atomic_inc(&devices_found);
+ return 0;
err_register:
- vmxnet3_free_intr_resources(adapter);
+ vmxnet3_free_intr_resources(adapter);
err_ver:
- vmxnet3_free_pci_resources(adapter);
+ vmxnet3_free_pci_resources(adapter);
err_alloc_pci:
- kfree(adapter->pm_conf);
+ kfree(adapter->pm_conf);
err_alloc_pm:
- pci_free_consistent(adapter->pdev,
- sizeof(Vmxnet3_TxQueueDesc) + sizeof(Vmxnet3_RxQueueDesc),
- adapter->tqd_start, adapter->queue_desc_pa);
+ 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(Vmxnet3_DriverShared),
- adapter->shared, adapter->shared_pa);
+ pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared),
+ adapter->shared, adapter->shared_pa);
err_alloc_shared:
- pci_set_drvdata(pdev, NULL);
- compat_free_netdev(netdev);
- return err;
+ pci_set_drvdata(pdev, NULL);
+ compat_free_netdev(netdev);
+ return err;
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_remove_device --
- *
- * Called by the PCI subsystem to release a device
- *
- * Result:
- * None
- *
- * Side-effects:
- * unregister the adapter with the kernel and free resources
- *
- *----------------------------------------------------------------------------
- */
-
-static void
+static void __devexit
vmxnet3_remove_device(struct pci_dev *pdev)
{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct vmxnet3_adapter *adapter = compat_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(Vmxnet3_TxQueueDesc) + sizeof(Vmxnet3_RxQueueDesc),
- adapter->tqd_start, adapter->queue_desc_pa);
- pci_free_consistent(adapter->pdev, sizeof(Vmxnet3_DriverShared),
- adapter->shared, adapter->shared_pa);
- compat_free_netdev(netdev);
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct vmxnet3_adapter *adapter = compat_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);
+ compat_free_netdev(netdev);
}
#ifdef CONFIG_PM
/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_suspend --
- *
- * Called by the PCI subsystem to save device state before suspending
- * system.
- *
- * Results:
- * 0 on success, errno on failure.
- *
- * Side effects:
* May programs the wake-up filters if configured to do so.
- *
- *----------------------------------------------------------------------------
*/
static int
vmxnet3_suspend(struct pci_dev *pdev, pm_message_t state)
{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- Vmxnet3_PMConf *pmConf;
- struct ethhdr *ehdr;
- struct arphdr *ahdr;
- uint8 *arpreq;
- struct in_device *in_dev;
- struct in_ifaddr *ifa;
- int i = 0;
-
- if (!compat_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) {
- VMXNET3_LOG("Cannot program WoL ARP filter for %s: IPv4 not enabled.\n",
- netdev->name);
- goto skip_arp;
- }
- ifa = (struct in_ifaddr *)in_dev->ifa_list;
- if (!ifa) {
- VMXNET3_LOG("Cannot program WoL ARP filter for %s: no IPv4 address.\n",
- netdev->name);
- in_dev_put(in_dev);
- goto skip_arp;
- }
- pmConf->filters[i].patternSize = ETH_HLEN + // Ethernet header
- sizeof(struct arphdr) + // ARP header
- 2 * ETH_ALEN + // 2 Ethernet addresses
- 2 * sizeof (uint32); // 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 = (uint8 *)(ahdr + 1);
- /* The Unicast IPv4 address in 'tip' field. */
- arpreq += 2 * ETH_ALEN + sizeof(uint32);
- *(uint32 *)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++;
- }
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct vmxnet3_adapter *adapter = compat_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 (!compat_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) {
+ dev_dbg(&adapter->pdev->dev, "Cannot program WoL ARP"
+ " filter for %s: no IPv4 address.\n",
+ netdev->name);
+ in_dev_put(in_dev);
+ 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;
- }
+ if (adapter->wol & WAKE_MAGIC)
+ pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC;
- pmConf->numFilters = i;
+ 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);
+ 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);
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_PMCFG);
- compat_pci_save_state(pdev);
- pci_enable_wake(pdev, compat_pci_choose_state(pdev, state), adapter->wol);
- compat_pci_disable_device(pdev);
- pci_set_power_state(pdev, compat_pci_choose_state(pdev, state));
+ compat_pci_save_state(pdev);
+ pci_enable_wake(pdev, compat_pci_choose_state(pdev, state),
+ adapter->wol);
+ compat_pci_disable_device(pdev);
+ pci_set_power_state(pdev, compat_pci_choose_state(pdev, state));
- return 0;
+ return 0;
}
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_resume --
- *
- * Called by the PCI subsystem to restore device state when resuming the
- * system.
- *
- * Results:
- * 0 on success, errno on failure.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------------
- */
-
static int
vmxnet3_resume(struct pci_dev *pdev)
{
- int err;
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
- Vmxnet3_PMConf *pmConf;
-
- if (!compat_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);
- compat_pci_restore_state(pdev);
- err = compat_pci_enable_device(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;
+ int err;
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct vmxnet3_adapter *adapter = compat_netdev_priv(netdev);
+ struct Vmxnet3_PMConf *pmConf;
+
+ if (!compat_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);
+ compat_pci_restore_state(pdev);
+ err = compat_pci_enable_device(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;
}
#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
+ .suspend = vmxnet3_suspend,
+ .resume = vmxnet3_resume,
+#endif
+};
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_init_module --
- *
- * Called when the driver is loaded
- *
- * Result:
- * 0 on success, negative errno value on error
- *
- * Side-effects:
- * register ourselves with the pci system, and claim devices
- *
- *----------------------------------------------------------------------------
- */
static int __init
vmxnet3_init_module(void)
{
- printk(KERN_INFO "%s - version %s\n", VMXNET3_DRIVER_DESC, VMXNET3_DRIVER_VERSION_REPORT);
+ printk(KERN_INFO "%s - version %s\n", VMXNET3_DRIVER_DESC,
+ VMXNET3_DRIVER_VERSION_REPORT);
- correct_shm_disclaimer = shm_disclaimer &&
- (strncmp(shm_disclaimer, VMXNET3_SHM_DISCLAIMER, strlen(VMXNET3_SHM_DISCLAIMER)) == 0);
+ correct_shm_disclaimer = shm_disclaimer &&
+ (strncmp(shm_disclaimer, VMXNET3_SHM_DISCLAIMER,
+ strlen(VMXNET3_SHM_DISCLAIMER)) == 0);
#ifdef CONFIG_COMPAT
#ifndef HAVE_UNLOCKED_IOCTL
- if (correct_shm_disclaimer) {
- register_ioctl32_conversion(SHM_IOCTL_TX, NULL);
- register_ioctl32_conversion(SHM_IOCTL_ALLOC_ONE, NULL);
- register_ioctl32_conversion(SHM_IOCTL_ALLOC_MANY, NULL);
- register_ioctl32_conversion(SHM_IOCTL_ALLOC_ONE_AND_MANY, NULL);
- register_ioctl32_conversion(SHM_IOCTL_FREE_ONE, NULL);
- }
+ if (correct_shm_disclaimer) {
+ register_ioctl32_conversion(SHM_IOCTL_TX, NULL);
+ register_ioctl32_conversion(SHM_IOCTL_ALLOC_ONE, NULL);
+ register_ioctl32_conversion(SHM_IOCTL_ALLOC_MANY, NULL);
+ register_ioctl32_conversion(SHM_IOCTL_ALLOC_ONE_AND_MANY, NULL);
+ register_ioctl32_conversion(SHM_IOCTL_FREE_ONE, NULL);
+ }
#endif
#endif
- return pci_register_driver(&vmxnet3_driver);
+ return pci_register_driver(&vmxnet3_driver);
}
-
-/*
- *----------------------------------------------------------------------------
- *
- * vmxnet3_exit_module --
- *
- * Called when the driver is to be unloaded
- *
- * Result:
- * None
- *
- * Side-effects:
- * unregister ourselves with the pci system
- *
- *----------------------------------------------------------------------------
- */
+module_init(vmxnet3_init_module);
static void
vmxnet3_exit_module(void)
{
#ifdef CONFIG_COMPAT
#ifndef HAVE_UNLOCKED_IOCTL
- if (correct_shm_disclaimer) {
- unregister_ioctl32_conversion(SHM_IOCTL_TX);
- unregister_ioctl32_conversion(SHM_IOCTL_ALLOC_ONE);
- unregister_ioctl32_conversion(SHM_IOCTL_ALLOC_MANY);
- unregister_ioctl32_conversion(SHM_IOCTL_ALLOC_ONE_AND_MANY);
- unregister_ioctl32_conversion(SHM_IOCTL_FREE_ONE);
- }
+ if (correct_shm_disclaimer) {
+ unregister_ioctl32_conversion(SHM_IOCTL_TX);
+ unregister_ioctl32_conversion(SHM_IOCTL_ALLOC_ONE);
+ unregister_ioctl32_conversion(SHM_IOCTL_ALLOC_MANY);
+ unregister_ioctl32_conversion(SHM_IOCTL_ALLOC_ONE_AND_MANY);
+ unregister_ioctl32_conversion(SHM_IOCTL_FREE_ONE);
+ }
#endif
#endif
- pci_unregister_driver(&vmxnet3_driver);
+ pci_unregister_driver(&vmxnet3_driver);
}
-module_init(vmxnet3_init_module);
module_exit(vmxnet3_exit_module);
-MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table);
MODULE_AUTHOR("VMware, Inc.");
MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC);
* by default (i.e., neither mkinitrd nor modprobe will accept it).
*/
MODULE_INFO(supported, "external");
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
module_param(disable_lro, int, 0);
+#endif
+
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 2)
MODULE_PARM(enable_shm, "0-10i");
#elif LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 10)
projects / thirdparty / open-vm-tools.git / commitdiff
