spin_unlock_bh(&queue->rx_lock);
}
-static void xennet_uninit(struct net_device *dev)
-{
- struct netfront_info *np = netdev_priv(dev);
- unsigned int num_queues = dev->real_num_tx_queues;
- struct netfront_queue *queue;
- unsigned int i;
-
- for (i = 0; i < num_queues; ++i) {
- queue = &np->queues[i];
- xennet_release_tx_bufs(queue);
- xennet_release_rx_bufs(queue);
- gnttab_free_grant_references(queue->gref_tx_head);
- gnttab_free_grant_references(queue->gref_rx_head);
- }
-}
-
static netdev_features_t xennet_fix_features(struct net_device *dev,
netdev_features_t features)
{
static const struct net_device_ops xennet_netdev_ops = {
.ndo_open = xennet_open,
- .ndo_uninit = xennet_uninit,
.ndo_stop = xennet_close,
.ndo_start_xmit = xennet_start_xmit,
.ndo_change_mtu = xennet_change_mtu,
napi_synchronize(&queue->napi);
+ xennet_release_tx_bufs(queue);
+ xennet_release_rx_bufs(queue);
+ gnttab_free_grant_references(queue->gref_tx_head);
+ gnttab_free_grant_references(queue->gref_rx_head);
+
/* End access and free the pages */
xennet_end_access(queue->tx_ring_ref, queue->tx.sring);
xennet_end_access(queue->rx_ring_ref, queue->rx.sring);
{
struct netfront_info *np = netdev_priv(dev);
unsigned int num_queues = 0;
- int i, requeue_idx, err;
- struct sk_buff *skb;
- grant_ref_t ref;
- struct xen_netif_rx_request *req;
+ int err;
unsigned int feature_rx_copy;
unsigned int j = 0;
struct netfront_queue *queue = NULL;
netdev_update_features(dev);
rtnl_unlock();
- /* By now, the queue structures have been set up */
- for (j = 0; j < num_queues; ++j) {
- queue = &np->queues[j];
-
- /* Step 1: Discard all pending TX packet fragments. */
- spin_lock_irq(&queue->tx_lock);
- xennet_release_tx_bufs(queue);
- spin_unlock_irq(&queue->tx_lock);
-
- /* Step 2: Rebuild the RX buffer freelist and the RX ring itself. */
- spin_lock_bh(&queue->rx_lock);
-
- for (requeue_idx = 0, i = 0; i < NET_RX_RING_SIZE; i++) {
- skb_frag_t *frag;
- const struct page *page;
- if (!queue->rx_skbs[i])
- continue;
-
- skb = queue->rx_skbs[requeue_idx] = xennet_get_rx_skb(queue, i);
- ref = queue->grant_rx_ref[requeue_idx] = xennet_get_rx_ref(queue, i);
- req = RING_GET_REQUEST(&queue->rx, requeue_idx);
-
- frag = &skb_shinfo(skb)->frags[0];
- page = skb_frag_page(frag);
- gnttab_grant_foreign_access_ref(
- ref, queue->info->xbdev->otherend_id,
- pfn_to_mfn(page_to_pfn(page)),
- 0);
- req->gref = ref;
- req->id = requeue_idx;
-
- requeue_idx++;
- }
-
- queue->rx.req_prod_pvt = requeue_idx;
-
- spin_unlock_bh(&queue->rx_lock);
- }
-
/*
- * Step 3: All public and private state should now be sane. Get
+ * All public and private state should now be sane. Get
* ready to start sending and receiving packets and give the driver
* domain a kick because we've probably just requeued some
* packets.