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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

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This commit is contained in:
David S. Miller
2017-02-11 02:31:11 -05:00
parent bed45f79a2 1ee18329fa
commit 35eeacf182
97 changed files with 863 additions and 351 deletions
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46
drivers/net/xen-netfront.c
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@@ -281,6 +281,7 @@ static void xennet_alloc_rx_buffers(struct netfront_queue *queue)
{
RING_IDX req_prod = queue->rx.req_prod_pvt;
int notify;
int err = 0;
if (unlikely(!netif_carrier_ok(queue->info->netdev)))
return;
@@ -295,8 +296,10 @@ static void xennet_alloc_rx_buffers(struct netfront_queue *queue)
struct xen_netif_rx_request *req;
skb = xennet_alloc_one_rx_buffer(queue);
if (!skb)
if (!skb) {
err = -ENOMEM;
break;
}
id = xennet_rxidx(req_prod);
@@ -320,8 +323,13 @@ static void xennet_alloc_rx_buffers(struct netfront_queue *queue)
queue->rx.req_prod_pvt = req_prod;
/* Not enough requests? Try again later. */
if (req_prod - queue->rx.sring->req_prod < NET_RX_SLOTS_MIN) {
/* Try again later if there are not enough requests or skb allocation
* failed.
* Enough requests is quantified as the sum of newly created slots and
* the unconsumed slots at the backend.
*/
if (req_prod - queue->rx.rsp_cons < NET_RX_SLOTS_MIN ||
unlikely(err)) {
mod_timer(&queue->rx_refill_timer, jiffies + (HZ/10));
return;
}
@@ -1377,6 +1385,8 @@ static void xennet_disconnect_backend(struct netfront_info *info)
for (i = 0; i < num_queues && info->queues; ++i) {
struct netfront_queue *queue = &info->queues[i];
del_timer_sync(&queue->rx_refill_timer);
if (queue->tx_irq && (queue->tx_irq == queue->rx_irq))
unbind_from_irqhandler(queue->tx_irq, queue);
if (queue->tx_irq && (queue->tx_irq != queue->rx_irq)) {
@@ -1731,7 +1741,6 @@ static void xennet_destroy_queues(struct netfront_info *info)
if (netif_running(info->netdev))
napi_disable(&queue->napi);
del_timer_sync(&queue->rx_refill_timer);
netif_napi_del(&queue->napi);
}
@@ -1820,27 +1829,19 @@ static int talk_to_netback(struct xenbus_device *dev,
xennet_destroy_queues(info);
err = xennet_create_queues(info, &num_queues);
if (err < 0)
goto destroy_ring;
if (err < 0) {
xenbus_dev_fatal(dev, err, "creating queues");
kfree(info->queues);
info->queues = NULL;
goto out;
}
/* Create shared ring, alloc event channel -- for each queue */
for (i = 0; i < num_queues; ++i) {
queue = &info->queues[i];
err = setup_netfront(dev, queue, feature_split_evtchn);
if (err) {
/* setup_netfront() will tidy up the current
* queue on error, but we need to clean up
* those already allocated.
*/
if (i > 0) {
rtnl_lock();
netif_set_real_num_tx_queues(info->netdev, i);
rtnl_unlock();
goto destroy_ring;
} else {
goto out;
}
}
if (err)
goto destroy_ring;
}
again:
@@ -1930,9 +1931,10 @@ abort_transaction_no_dev_fatal:
xenbus_transaction_end(xbt, 1);
destroy_ring:
xennet_disconnect_backend(info);
kfree(info->queues);
info->queues = NULL;
xennet_destroy_queues(info);
out:
unregister_netdev(info->netdev);
xennet_free_netdev(info->netdev);
return err;
}