diff mbox

[v2,5/6] netpoll: Remove strong unnecessary assumptions about skbs

Message ID 871txnqn7j.fsf_-_@x220.int.ebiederm.org
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Eric W. Biederman March 27, 2014, 10:41 p.m. UTC
Remove the assumption that the skbs that make it to
netpoll_send_skb_on_dev are allocated with find_skb, such that
skb->users == 1 and nothing is attached that would prevent the skbs from
being freed from hard irq context.

Remove this assumption by replacing __kfree_skb on error paths with
dev_kfree_skb_irq (in hard irq context) and kfree_skb (in process
context).

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
 net/core/netpoll.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index f3012800a81b..2136c9aacdbf 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -112,7 +112,7 @@  static void queue_process(struct work_struct *work)
 		struct netdev_queue *txq;
 
 		if (!netif_device_present(dev) || !netif_running(dev)) {
-			__kfree_skb(skb);
+			kfree_skb(skb);
 			continue;
 		}
 
@@ -332,7 +332,7 @@  void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
 
 	npinfo = rcu_dereference_bh(np->dev->npinfo);
 	if (!npinfo || !netif_running(dev) || !netif_device_present(dev)) {
-		__kfree_skb(skb);
+		dev_kfree_skb_irq(skb);
 		return;
 	}