diff options
Diffstat (limited to 'drivers/net/xen-netback/common.h')
| -rw-r--r-- | drivers/net/xen-netback/common.h | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h index 08ae01b41c83..ba30a6d9fefa 100644 --- a/drivers/net/xen-netback/common.h +++ b/drivers/net/xen-netback/common.h @@ -136,12 +136,10 @@ struct xenvif { char rx_irq_name[IFNAMSIZ+4]; /* DEVNAME-rx */ struct xen_netif_rx_back_ring rx; struct sk_buff_head rx_queue; - - /* Allow xenvif_start_xmit() to peek ahead in the rx request - * ring. This is a prediction of what rx_req_cons will be - * once all queued skbs are put on the ring. + /* Set when the RX interrupt is triggered by the frontend. + * The worker thread may need to wake the queue. */ - RING_IDX rx_req_cons_peek; + bool rx_event; /* Given MAX_BUFFER_OFFSET of 4096 the worst case is that each * head/fragment page uses 2 copy operations because it @@ -198,8 +196,6 @@ void xenvif_xenbus_fini(void); int xenvif_schedulable(struct xenvif *vif); -int xenvif_rx_ring_full(struct xenvif *vif); - int xenvif_must_stop_queue(struct xenvif *vif); /* (Un)Map communication rings. */ @@ -211,21 +207,20 @@ int xenvif_map_frontend_rings(struct xenvif *vif, /* Check for SKBs from frontend and schedule backend processing */ void xenvif_check_rx_xenvif(struct xenvif *vif); -/* Queue an SKB for transmission to the frontend */ -void xenvif_queue_tx_skb(struct xenvif *vif, struct sk_buff *skb); -/* Notify xenvif that ring now has space to send an skb to the frontend */ -void xenvif_notify_tx_completion(struct xenvif *vif); - /* Prevent the device from generating any further traffic. */ void xenvif_carrier_off(struct xenvif *vif); -/* Returns number of ring slots required to send an skb to the frontend */ -unsigned int xenvif_count_skb_slots(struct xenvif *vif, struct sk_buff *skb); - int xenvif_tx_action(struct xenvif *vif, int budget); -void xenvif_rx_action(struct xenvif *vif); int xenvif_kthread(void *data); +void xenvif_kick_thread(struct xenvif *vif); + +/* Determine whether the needed number of slots (req) are available, + * and set req_event if not. + */ +bool xenvif_rx_ring_slots_available(struct xenvif *vif, int needed); + +void xenvif_stop_queue(struct xenvif *vif); extern bool separate_tx_rx_irq; |