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path: root/drivers/net/ibmveth.c
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Diffstat (limited to 'drivers/net/ibmveth.c')
-rw-r--r--drivers/net/ibmveth.c117
1 files changed, 58 insertions, 59 deletions
diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c
index acba90f1638..78e28ada1e2 100644
--- a/drivers/net/ibmveth.c
+++ b/drivers/net/ibmveth.c
@@ -83,7 +83,7 @@
static int ibmveth_open(struct net_device *dev);
static int ibmveth_close(struct net_device *dev);
static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
-static int ibmveth_poll(struct net_device *dev, int *budget);
+static int ibmveth_poll(struct napi_struct *napi, int budget);
static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *dev);
static struct net_device_stats *ibmveth_get_stats(struct net_device *dev);
static void ibmveth_set_multicast_list(struct net_device *dev);
@@ -480,6 +480,8 @@ static int ibmveth_open(struct net_device *netdev)
ibmveth_debug_printk("open starting\n");
+ napi_enable(&adapter->napi);
+
for(i = 0; i<IbmVethNumBufferPools; i++)
rxq_entries += adapter->rx_buff_pool[i].size;
@@ -489,6 +491,7 @@ static int ibmveth_open(struct net_device *netdev)
if(!adapter->buffer_list_addr || !adapter->filter_list_addr) {
ibmveth_error_printk("unable to allocate filter or buffer list pages\n");
ibmveth_cleanup(adapter);
+ napi_disable(&adapter->napi);
return -ENOMEM;
}
@@ -498,6 +501,7 @@ static int ibmveth_open(struct net_device *netdev)
if(!adapter->rx_queue.queue_addr) {
ibmveth_error_printk("unable to allocate rx queue pages\n");
ibmveth_cleanup(adapter);
+ napi_disable(&adapter->napi);
return -ENOMEM;
}
@@ -514,6 +518,7 @@ static int ibmveth_open(struct net_device *netdev)
(dma_mapping_error(adapter->rx_queue.queue_dma))) {
ibmveth_error_printk("unable to map filter or buffer list pages\n");
ibmveth_cleanup(adapter);
+ napi_disable(&adapter->napi);
return -ENOMEM;
}
@@ -545,6 +550,7 @@ static int ibmveth_open(struct net_device *netdev)
rxq_desc.desc,
mac_address);
ibmveth_cleanup(adapter);
+ napi_disable(&adapter->napi);
return -ENONET;
}
@@ -555,6 +561,7 @@ static int ibmveth_open(struct net_device *netdev)
ibmveth_error_printk("unable to alloc pool\n");
adapter->rx_buff_pool[i].active = 0;
ibmveth_cleanup(adapter);
+ napi_disable(&adapter->napi);
return -ENOMEM ;
}
}
@@ -567,6 +574,7 @@ static int ibmveth_open(struct net_device *netdev)
} while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY));
ibmveth_cleanup(adapter);
+ napi_disable(&adapter->napi);
return rc;
}
@@ -587,6 +595,8 @@ static int ibmveth_close(struct net_device *netdev)
ibmveth_debug_printk("close starting\n");
+ napi_disable(&adapter->napi);
+
if (!adapter->pool_config)
netif_stop_queue(netdev);
@@ -767,80 +777,68 @@ out: spin_lock_irqsave(&adapter->stats_lock, flags);
return 0;
}
-static int ibmveth_poll(struct net_device *netdev, int *budget)
+static int ibmveth_poll(struct napi_struct *napi, int budget)
{
- struct ibmveth_adapter *adapter = netdev->priv;
- int max_frames_to_process = netdev->quota;
+ struct ibmveth_adapter *adapter = container_of(napi, struct ibmveth_adapter, napi);
+ struct net_device *netdev = adapter->netdev;
int frames_processed = 0;
- int more_work = 1;
unsigned long lpar_rc;
restart_poll:
do {
- struct net_device *netdev = adapter->netdev;
-
- if(ibmveth_rxq_pending_buffer(adapter)) {
- struct sk_buff *skb;
+ struct sk_buff *skb;
- rmb();
+ if (!ibmveth_rxq_pending_buffer(adapter))
+ break;
- if(!ibmveth_rxq_buffer_valid(adapter)) {
- wmb(); /* suggested by larson1 */
- adapter->rx_invalid_buffer++;
- ibmveth_debug_printk("recycling invalid buffer\n");
- ibmveth_rxq_recycle_buffer(adapter);
- } else {
- int length = ibmveth_rxq_frame_length(adapter);
- int offset = ibmveth_rxq_frame_offset(adapter);
- skb = ibmveth_rxq_get_buffer(adapter);
+ rmb();
+ if (!ibmveth_rxq_buffer_valid(adapter)) {
+ wmb(); /* suggested by larson1 */
+ adapter->rx_invalid_buffer++;
+ ibmveth_debug_printk("recycling invalid buffer\n");
+ ibmveth_rxq_recycle_buffer(adapter);
+ } else {
+ int length = ibmveth_rxq_frame_length(adapter);
+ int offset = ibmveth_rxq_frame_offset(adapter);
+ skb = ibmveth_rxq_get_buffer(adapter);
- ibmveth_rxq_harvest_buffer(adapter);
+ ibmveth_rxq_harvest_buffer(adapter);
- skb_reserve(skb, offset);
- skb_put(skb, length);
- skb->protocol = eth_type_trans(skb, netdev);
+ skb_reserve(skb, offset);
+ skb_put(skb, length);
+ skb->protocol = eth_type_trans(skb, netdev);
- netif_receive_skb(skb); /* send it up */
+ netif_receive_skb(skb); /* send it up */
- adapter->stats.rx_packets++;
- adapter->stats.rx_bytes += length;
- frames_processed++;
- netdev->last_rx = jiffies;
- }
- } else {
- more_work = 0;
+ adapter->stats.rx_packets++;
+ adapter->stats.rx_bytes += length;
+ frames_processed++;
+ netdev->last_rx = jiffies;
}
- } while(more_work && (frames_processed < max_frames_to_process));
+ } while (frames_processed < budget);
ibmveth_replenish_task(adapter);
- if(more_work) {
- /* more work to do - return that we are not done yet */
- netdev->quota -= frames_processed;
- *budget -= frames_processed;
- return 1;
- }
-
- /* we think we are done - reenable interrupts, then check once more to make sure we are done */
- lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_ENABLE);
+ if (frames_processed < budget) {
+ /* We think we are done - reenable interrupts,
+ * then check once more to make sure we are done.
+ */
+ lpar_rc = h_vio_signal(adapter->vdev->unit_address,
+ VIO_IRQ_ENABLE);
- ibmveth_assert(lpar_rc == H_SUCCESS);
+ ibmveth_assert(lpar_rc == H_SUCCESS);
- netif_rx_complete(netdev);
+ netif_rx_complete(netdev, napi);
- if(ibmveth_rxq_pending_buffer(adapter) && netif_rx_reschedule(netdev, frames_processed))
- {
- lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
- ibmveth_assert(lpar_rc == H_SUCCESS);
- more_work = 1;
- goto restart_poll;
+ if (ibmveth_rxq_pending_buffer(adapter) &&
+ netif_rx_reschedule(netdev, napi)) {
+ lpar_rc = h_vio_signal(adapter->vdev->unit_address,
+ VIO_IRQ_DISABLE);
+ goto restart_poll;
+ }
}
- netdev->quota -= frames_processed;
- *budget -= frames_processed;
-
- /* we really are done */
- return 0;
+ return frames_processed;
}
static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance)
@@ -849,10 +847,11 @@ static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance)
struct ibmveth_adapter *adapter = netdev->priv;
unsigned long lpar_rc;
- if(netif_rx_schedule_prep(netdev)) {
- lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
+ if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
+ lpar_rc = h_vio_signal(adapter->vdev->unit_address,
+ VIO_IRQ_DISABLE);
ibmveth_assert(lpar_rc == H_SUCCESS);
- __netif_rx_schedule(netdev);
+ __netif_rx_schedule(netdev, &adapter->napi);
}
return IRQ_HANDLED;
}
@@ -1004,6 +1003,8 @@ static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_
adapter->mcastFilterSize= *mcastFilterSize_p;
adapter->pool_config = 0;
+ netif_napi_add(netdev, &adapter->napi, ibmveth_poll, 16);
+
/* Some older boxes running PHYP non-natively have an OF that
returns a 8-byte local-mac-address field (and the first
2 bytes have to be ignored) while newer boxes' OF return
@@ -1020,8 +1021,6 @@ static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_
netdev->irq = dev->irq;
netdev->open = ibmveth_open;
- netdev->poll = ibmveth_poll;
- netdev->weight = 16;
netdev->stop = ibmveth_close;
netdev->hard_start_xmit = ibmveth_start_xmit;
netdev->get_stats = ibmveth_get_stats;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-13 20:59:11 +0000