diff options
| -rw-r--r-- | drivers/net/xen-netback/common.h | 1 | ||||
| -rw-r--r-- | drivers/net/xen-netback/rx.c | 27 |
2 files changed, 18 insertions, 10 deletions
diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h index 7d12a38..cf68149 100644 --- a/drivers/net/xen-netback/common.h +++ b/drivers/net/xen-netback/common.h @@ -132,6 +132,7 @@ struct xenvif_copy_state { struct gnttab_copy op[COPY_BATCH_SIZE]; RING_IDX idx[COPY_BATCH_SIZE]; unsigned int num; + struct sk_buff_head *completed; }; struct xenvif_queue { /* Per-queue data for xenvif */ diff --git a/drivers/net/xen-netback/rx.c b/drivers/net/xen-netback/rx.c index ae822b8..8c8c5b5 100644 --- a/drivers/net/xen-netback/rx.c +++ b/drivers/net/xen-netback/rx.c @@ -133,6 +133,7 @@ static void xenvif_rx_queue_drop_expired(struct xenvif_queue *queue) static void xenvif_rx_copy_flush(struct xenvif_queue *queue) { unsigned int i; + int notify; gnttab_batch_copy(queue->rx_copy.op, queue->rx_copy.num); @@ -154,6 +155,13 @@ static void xenvif_rx_copy_flush(struct xenvif_queue *queue) } queue->rx_copy.num = 0; + + /* Push responses for all completed packets. */ + RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&queue->rx, notify); + if (notify) + notify_remote_via_irq(queue->rx_irq); + + __skb_queue_purge(queue->rx_copy.completed); } static void xenvif_rx_copy_add(struct xenvif_queue *queue, @@ -279,18 +287,10 @@ static void xenvif_rx_next_skb(struct xenvif_queue *queue, static void xenvif_rx_complete(struct xenvif_queue *queue, struct xenvif_pkt_state *pkt) { - int notify; - - /* Complete any outstanding copy ops for this skb. */ - xenvif_rx_copy_flush(queue); - - /* Push responses and notify. */ + /* All responses are ready to be pushed. */ queue->rx.rsp_prod_pvt = queue->rx.req_cons; - RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&queue->rx, notify); - if (notify) - notify_remote_via_irq(queue->rx_irq); - dev_kfree_skb(pkt->skb); + __skb_queue_tail(queue->rx_copy.completed, pkt->skb); } static void xenvif_rx_next_chunk(struct xenvif_queue *queue, @@ -429,13 +429,20 @@ void xenvif_rx_skb(struct xenvif_queue *queue) void xenvif_rx_action(struct xenvif_queue *queue) { + struct sk_buff_head completed_skbs; unsigned int work_done = 0; + __skb_queue_head_init(&completed_skbs); + queue->rx_copy.completed = &completed_skbs; + while (xenvif_rx_ring_slots_available(queue) && work_done < RX_BATCH_SIZE) { xenvif_rx_skb(queue); work_done++; } + + /* Flush any pending copies and complete all skbs. */ + xenvif_rx_copy_flush(queue); } static bool xenvif_rx_queue_stalled(struct xenvif_queue *queue) |