@@ -659,25 +659,6 @@ void xenvif_carrier_off(struct xenvif *vif)
rtnl_unlock();
}
-static void xenvif_wait_unmap_timeout(struct xenvif_queue *queue,
- unsigned int worst_case_skb_lifetime)
-{
- int i, unmap_timeout = 0;
-
- for (i = 0; i < MAX_PENDING_REQS; ++i) {
- if (queue->grant_tx_handle[i] != NETBACK_INVALID_HANDLE) {
- unmap_timeout++;
- schedule_timeout(msecs_to_jiffies(1000));
- if (unmap_timeout > worst_case_skb_lifetime &&
- net_ratelimit())
- netdev_err(queue->vif->dev,
- "Page still granted! Index: %x\n",
- i);
- i = -1;
- }
- }
-}
-
void xenvif_disconnect(struct xenvif *vif)
{
struct xenvif_queue *queue = NULL;
@@ -736,21 +717,11 @@ void xenvif_free(struct xenvif *vif)
struct xenvif_queue *queue = NULL;
unsigned int num_queues = vif->num_queues;
unsigned int queue_index;
- /* Here we want to avoid timeout messages if an skb can be legitimately
- * stuck somewhere else. Realistically this could be an another vif's
- * internal or QDisc queue. That another vif also has this
- * rx_drain_timeout_msecs timeout, so give it time to drain out.
- * Although if that other guest wakes up just before its timeout happens
- * and takes only one skb from QDisc, it can hold onto other skbs for a
- * longer period.
- */
- unsigned int worst_case_skb_lifetime = (rx_drain_timeout_msecs/1000);
unregister_netdev(vif->dev);
for (queue_index = 0; queue_index < num_queues; ++queue_index) {
queue = &vif->queues[queue_index];
- xenvif_wait_unmap_timeout(queue, worst_case_skb_lifetime);
xenvif_deinit_queue(queue);
}
The original implementation relies on a loop to check if all inflight packets are freed. Now we have proper reference counting, there's no need to use loop anymore. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: Zoltan Kiss <zoltan.kiss@citrix.com> --- drivers/net/xen-netback/interface.c | 29 ----------------------------- 1 file changed, 29 deletions(-)