#define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */
/* Supported devices */
-static struct pci_device_id enic_id_table[] = {
+static DEFINE_PCI_DEVICE_TABLE(enic_id_table) = {
{ PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET) },
{ 0, } /* end of table */
};
enic->msg_enable = value;
}
+static int enic_get_coalesce(struct net_device *netdev,
+ struct ethtool_coalesce *ecmd)
+{
+ struct enic *enic = netdev_priv(netdev);
+
+ ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
+ ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
+
+ return 0;
+}
+
+static int enic_set_coalesce(struct net_device *netdev,
+ struct ethtool_coalesce *ecmd)
+{
+ struct enic *enic = netdev_priv(netdev);
+ u32 tx_coalesce_usecs;
+ u32 rx_coalesce_usecs;
+
+ tx_coalesce_usecs = min_t(u32,
+ INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
+ ecmd->tx_coalesce_usecs);
+ rx_coalesce_usecs = min_t(u32,
+ INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
+ ecmd->rx_coalesce_usecs);
+
+ switch (vnic_dev_get_intr_mode(enic->vdev)) {
+ case VNIC_DEV_INTR_MODE_INTX:
+ if (tx_coalesce_usecs != rx_coalesce_usecs)
+ return -EINVAL;
+
+ vnic_intr_coalescing_timer_set(&enic->intr[ENIC_INTX_WQ_RQ],
+ INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+ break;
+ case VNIC_DEV_INTR_MODE_MSI:
+ if (tx_coalesce_usecs != rx_coalesce_usecs)
+ return -EINVAL;
+
+ vnic_intr_coalescing_timer_set(&enic->intr[0],
+ INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+ break;
+ case VNIC_DEV_INTR_MODE_MSIX:
+ vnic_intr_coalescing_timer_set(&enic->intr[ENIC_MSIX_WQ],
+ INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+ vnic_intr_coalescing_timer_set(&enic->intr[ENIC_MSIX_RQ],
+ INTR_COALESCE_USEC_TO_HW(rx_coalesce_usecs));
+ break;
+ default:
+ break;
+ }
+
+ enic->tx_coalesce_usecs = tx_coalesce_usecs;
+ enic->rx_coalesce_usecs = rx_coalesce_usecs;
+
+ return 0;
+}
+
static const struct ethtool_ops enic_ethtool_ops = {
.get_settings = enic_get_settings,
.get_drvinfo = enic_get_drvinfo,
.set_sg = ethtool_op_set_sg,
.get_tso = ethtool_op_get_tso,
.set_tso = enic_set_tso,
+ .get_coalesce = enic_get_coalesce,
+ .set_coalesce = enic_set_coalesce,
.get_flags = ethtool_op_get_flags,
.set_flags = ethtool_op_set_flags,
};
u32 mtu = vnic_dev_mtu(enic->vdev);
if (mtu && mtu != enic->port_mtu) {
+ enic->port_mtu = mtu;
if (mtu < enic->netdev->mtu)
printk(KERN_WARNING PFX
"%s: interface MTU (%d) set higher "
"than switch port MTU (%d)\n",
enic->netdev->name, enic->netdev->mtu, mtu);
- enic->port_mtu = mtu;
}
}
/* netif_tx_lock held, process context with BHs disabled, or BH */
static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb,
- struct net_device *netdev)
+ struct net_device *netdev)
{
struct enic *enic = netdev_priv(netdev);
struct vnic_wq *wq = &enic->wq[0];
static void enic_set_multicast_list(struct net_device *netdev)
{
struct enic *enic = netdev_priv(netdev);
- struct dev_mc_list *list = netdev->mc_list;
+ struct dev_mc_list *list;
int directed = 1;
int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0;
int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0;
int promisc = (netdev->flags & IFF_PROMISC) ? 1 : 0;
+ unsigned int mc_count = netdev_mc_count(netdev);
int allmulti = (netdev->flags & IFF_ALLMULTI) ||
- (netdev->mc_count > ENIC_MULTICAST_PERFECT_FILTERS);
+ mc_count > ENIC_MULTICAST_PERFECT_FILTERS;
+ unsigned int flags = netdev->flags | (allmulti ? IFF_ALLMULTI : 0);
u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN];
- unsigned int mc_count = netdev->mc_count;
unsigned int i, j;
if (mc_count > ENIC_MULTICAST_PERFECT_FILTERS)
spin_lock(&enic->devcmd_lock);
- vnic_dev_packet_filter(enic->vdev, directed,
- multicast, broadcast, promisc, allmulti);
+ if (enic->flags != flags) {
+ enic->flags = flags;
+ vnic_dev_packet_filter(enic->vdev, directed,
+ multicast, broadcast, promisc, allmulti);
+ }
/* Is there an easier way? Trying to minimize to
* calls to add/del multicast addrs. We keep the
* look for changes to add/del.
*/
- for (i = 0; list && i < mc_count; i++) {
- memcpy(mc_addr[i], list->dmi_addr, ETH_ALEN);
- list = list->next;
+ i = 0;
+ netdev_for_each_mc_addr(list, netdev) {
+ if (i == mc_count)
+ break;
+ memcpy(mc_addr[i++], list->dmi_addr, ETH_ALEN);
}
for (i = 0; i < enic->mc_count; i++) {
return 0;
}
-static void enic_rq_drop_buf(struct vnic_rq *rq,
- struct cq_desc *cq_desc, struct vnic_rq_buf *buf,
- int skipped, void *opaque)
-{
- struct enic *enic = vnic_dev_priv(rq->vdev);
- struct sk_buff *skb = buf->os_buf;
-
- if (skipped)
- return;
-
- pci_unmap_single(enic->pdev, buf->dma_addr,
- buf->len, PCI_DMA_FROMDEVICE);
-
- dev_kfree_skb_any(skb);
-}
-
-static int enic_rq_service_drop(struct vnic_dev *vdev, struct cq_desc *cq_desc,
- u8 type, u16 q_number, u16 completed_index, void *opaque)
-{
- struct enic *enic = vnic_dev_priv(vdev);
-
- vnic_rq_service(&enic->rq[q_number], cq_desc,
- completed_index, VNIC_RQ_RETURN_DESC,
- enic_rq_drop_buf, opaque);
-
- return 0;
-}
-
static int enic_poll(struct napi_struct *napi, int budget)
{
struct enic *enic = container_of(napi, struct enic, napi);
unsigned int rq_work_to_do = budget;
unsigned int wq_work_to_do = -1; /* no limit */
unsigned int work_done, rq_work_done, wq_work_done;
+ int err;
/* Service RQ (first) and WQ
*/
0 /* don't unmask intr */,
0 /* don't reset intr timer */);
- if (rq_work_done > 0) {
+ err = vnic_rq_fill(&enic->rq[0], enic->rq_alloc_buf);
- /* Replenish RQ
- */
+ /* Buffer allocation failed. Stay in polling
+ * mode so we can try to fill the ring again.
+ */
- vnic_rq_fill(&enic->rq[0], enic->rq_alloc_buf);
+ if (err)
+ rq_work_done = rq_work_to_do;
- } else {
+ if (rq_work_done < rq_work_to_do) {
- /* If no work done, flush all LROs and exit polling
+ /* Some work done, but not enough to stay in polling,
+ * flush all LROs and exit polling
*/
if (netdev->features & NETIF_F_LRO)
struct net_device *netdev = enic->netdev;
unsigned int work_to_do = budget;
unsigned int work_done;
+ int err;
/* Service RQ
*/
work_done = vnic_cq_service(&enic->cq[ENIC_CQ_RQ],
work_to_do, enic_rq_service, NULL);
- if (work_done > 0) {
-
- /* Replenish RQ
- */
-
- vnic_rq_fill(&enic->rq[0], enic->rq_alloc_buf);
-
- /* Return intr event credits for this polling
- * cycle. An intr event is the completion of a
- * RQ packet.
- */
+ /* Return intr event credits for this polling
+ * cycle. An intr event is the completion of a
+ * RQ packet.
+ */
+ if (work_done > 0)
vnic_intr_return_credits(&enic->intr[ENIC_MSIX_RQ],
work_done,
0 /* don't unmask intr */,
0 /* don't reset intr timer */);
- } else {
- /* If no work done, flush all LROs and exit polling
+ err = vnic_rq_fill(&enic->rq[0], enic->rq_alloc_buf);
+
+ /* Buffer allocation failed. Stay in polling mode
+ * so we can try to fill the ring again.
+ */
+
+ if (err)
+ work_done = work_to_do;
+
+ if (work_done < work_to_do) {
+
+ /* Some work done, but not enough to stay in polling,
+ * flush all LROs and exit polling
*/
if (netdev->features & NETIF_F_LRO)
return err;
}
+static void enic_synchronize_irqs(struct enic *enic)
+{
+ unsigned int i;
+
+ switch (vnic_dev_get_intr_mode(enic->vdev)) {
+ case VNIC_DEV_INTR_MODE_INTX:
+ case VNIC_DEV_INTR_MODE_MSI:
+ synchronize_irq(enic->pdev->irq);
+ break;
+ case VNIC_DEV_INTR_MODE_MSIX:
+ for (i = 0; i < enic->intr_count; i++)
+ synchronize_irq(enic->msix_entry[i].vector);
+ break;
+ default:
+ break;
+ }
+}
+
static int enic_notify_set(struct enic *enic)
{
int err;
}
for (i = 0; i < enic->rq_count; i++) {
- err = vnic_rq_fill(&enic->rq[i], enic->rq_alloc_buf);
- if (err) {
+ vnic_rq_fill(&enic->rq[i], enic->rq_alloc_buf);
+ /* Need at least one buffer on ring to get going */
+ if (vnic_rq_desc_used(&enic->rq[i]) == 0) {
printk(KERN_ERR PFX
"%s: Unable to alloc receive buffers.\n",
netdev->name);
+ err = -ENOMEM;
goto err_out_notify_unset;
}
}
unsigned int i;
int err;
+ for (i = 0; i < enic->intr_count; i++)
+ vnic_intr_mask(&enic->intr[i]);
+
+ enic_synchronize_irqs(enic);
+
del_timer_sync(&enic->notify_timer);
spin_lock(&enic->devcmd_lock);
vnic_dev_disable(enic->vdev);
spin_unlock(&enic->devcmd_lock);
napi_disable(&enic->napi);
- netif_stop_queue(netdev);
-
- for (i = 0; i < enic->intr_count; i++)
- vnic_intr_mask(&enic->intr[i]);
+ netif_carrier_off(netdev);
+ netif_tx_disable(netdev);
for (i = 0; i < enic->wq_count; i++) {
err = vnic_wq_disable(&enic->wq[i]);
spin_unlock(&enic->devcmd_lock);
enic_free_intr(enic);
- (void)vnic_cq_service(&enic->cq[ENIC_CQ_RQ],
- -1, enic_rq_service_drop, NULL);
- (void)vnic_cq_service(&enic->cq[ENIC_CQ_WQ],
- -1, enic_wq_service, NULL);
-
for (i = 0; i < enic->wq_count; i++)
vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
for (i = 0; i < enic->rq_count; i++)
err = enic_set_intr_mode(enic);
if (err) {
printk(KERN_ERR PFX
- "Failed to set intr mode, aborting.\n");
+ "Failed to set intr mode based on resource "
+ "counts and system capabilities, aborting.\n");
return err;
}
goto err_out_dev_deinit;
}
+ enic->tx_coalesce_usecs = enic->config.intr_timer_usec;
+ enic->rx_coalesce_usecs = enic->tx_coalesce_usecs;
+
netdev->netdev_ops = &enic_netdev_ops;
netdev->watchdog_timeo = 2 * HZ;
netdev->ethtool_ops = &enic_ethtool_ops;
projects / mv-sheeva.git / blobdiff