diff options
Diffstat (limited to 'drivers/net/xen-netfront.c')
| -rw-r--r-- | drivers/net/xen-netfront.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index f948c46d5132..f821a97d7827 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -291,7 +291,7 @@ static void xennet_alloc_rx_buffers(struct netfront_queue *queue) struct sk_buff *skb; unsigned short id; grant_ref_t ref; - unsigned long pfn; + unsigned long gfn; struct xen_netif_rx_request *req; skb = xennet_alloc_one_rx_buffer(queue); @@ -307,12 +307,12 @@ static void xennet_alloc_rx_buffers(struct netfront_queue *queue) BUG_ON((signed short)ref < 0); queue->grant_rx_ref[id] = ref; - pfn = page_to_pfn(skb_frag_page(&skb_shinfo(skb)->frags[0])); + gfn = xen_page_to_gfn(skb_frag_page(&skb_shinfo(skb)->frags[0])); req = RING_GET_REQUEST(&queue->rx, req_prod); gnttab_grant_foreign_access_ref(ref, queue->info->xbdev->otherend_id, - pfn_to_mfn(pfn), + gfn, 0); req->id = id; @@ -430,8 +430,10 @@ static struct xen_netif_tx_request *xennet_make_one_txreq( ref = gnttab_claim_grant_reference(&queue->gref_tx_head); BUG_ON((signed short)ref < 0); - gnttab_grant_foreign_access_ref(ref, queue->info->xbdev->otherend_id, - page_to_mfn(page), GNTMAP_readonly); + gnttab_grant_foreign_access_ref(ref, + queue->info->xbdev->otherend_id, + xen_page_to_gfn(page), + GNTMAP_readonly); queue->tx_skbs[id].skb = skb; queue->grant_tx_page[id] = page; @@ -1336,7 +1338,7 @@ static void xennet_disconnect_backend(struct netfront_info *info) netif_carrier_off(info->netdev); - for (i = 0; i < num_queues; ++i) { + for (i = 0; i < num_queues && info->queues; ++i) { struct netfront_queue *queue = &info->queues[i]; if (queue->tx_irq && (queue->tx_irq == queue->rx_irq)) @@ -1348,7 +1350,8 @@ static void xennet_disconnect_backend(struct netfront_info *info) queue->tx_evtchn = queue->rx_evtchn = 0; queue->tx_irq = queue->rx_irq = 0; - napi_synchronize(&queue->napi); + if (netif_running(info->netdev)) + napi_synchronize(&queue->napi); xennet_release_tx_bufs(queue); xennet_release_rx_bufs(queue); @@ -2101,7 +2104,8 @@ static int xennet_remove(struct xenbus_device *dev) unregister_netdev(info->netdev); - xennet_destroy_queues(info); + if (info->queues) + xennet_destroy_queues(info); xennet_free_netdev(info->netdev); return 0; @@ -2130,8 +2134,11 @@ static int __init netif_init(void) pr_info("Initialising Xen virtual ethernet driver\n"); - /* Allow as many queues as there are CPUs, by default */ - xennet_max_queues = num_online_cpus(); + /* Allow as many queues as there are CPUs if user has not + * specified a value. + */ + if (xennet_max_queues == 0) + xennet_max_queues = num_online_cpus(); return xenbus_register_frontend(&netfront_driver); } |