summaryrefslogtreecommitdiff
path: root/drivers/net/xen-netback
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2021-02-11 00:30:12 +0300
committerDavid S. Miller <davem@davemloft.net>2021-02-11 00:30:12 +0300
commitdc9d87581d464e7b7d38853d6904b70b6c920d99 (patch)
tree15aa27fefb867814899c0a0c194adf327675ba10 /drivers/net/xen-netback
parentde1db4a6ed6241e34cab0e5059d4b56f6bae39b9 (diff)
parent291009f656e8eaebbdfd3a8d99f6b190a9ce9deb (diff)
downloadlinux-dc9d87581d464e7b7d38853d6904b70b6c920d99.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Diffstat (limited to 'drivers/net/xen-netback')
-rw-r--r--drivers/net/xen-netback/rx.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/net/xen-netback/rx.c b/drivers/net/xen-netback/rx.c
index b8febe1d1bfd..accc991d153f 100644
--- a/drivers/net/xen-netback/rx.c
+++ b/drivers/net/xen-netback/rx.c
@@ -38,10 +38,15 @@ static bool xenvif_rx_ring_slots_available(struct xenvif_queue *queue)
RING_IDX prod, cons;
struct sk_buff *skb;
int needed;
+ unsigned long flags;
+
+ spin_lock_irqsave(&queue->rx_queue.lock, flags);
skb = skb_peek(&queue->rx_queue);
- if (!skb)
+ if (!skb) {
+ spin_unlock_irqrestore(&queue->rx_queue.lock, flags);
return false;
+ }
needed = DIV_ROUND_UP(skb->len, XEN_PAGE_SIZE);
if (skb_is_gso(skb))
@@ -49,6 +54,8 @@ static bool xenvif_rx_ring_slots_available(struct xenvif_queue *queue)
if (skb->sw_hash)
needed++;
+ spin_unlock_irqrestore(&queue->rx_queue.lock, flags);
+
do {
prod = queue->rx.sring->req_prod;
cons = queue->rx.req_cons;