diff mbox

[net-next,1/2] tuntap: purge socket error queue on detach

Message ID 1378269226-5969-1-git-send-email-jasowang@redhat.com
State Superseded, archived
Delegated to: David Miller
Headers show

Commit Message

Jason Wang Sept. 4, 2013, 4:33 a.m. UTC 
Commit eda297729171fe16bf34fe5b0419dfb69060f623
(tun: Support software transmit time stamping) will queue skbs into error queue
when tx stamping is enabled. But it forgets to purge the error queue during
detach. This patch fixes this.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 drivers/net/tun.c |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

Comments

Richard Cochran Sept. 4, 2013, 3:56 p.m. UTC | #1 
On Wed, Sep 04, 2013 at 12:33:45PM +0800, Jason Wang wrote:
> Commit eda297729171fe16bf34fe5b0419dfb69060f623
> (tun: Support software transmit time stamping) will queue skbs into error queue
> when tx stamping is enabled. But it forgets to purge the error queue during
> detach. This patch fixes this.
> 
> Cc: Richard Cochran <richardcochran@gmail.com>
> Signed-off-by: Jason Wang <jasowang@redhat.com>

Acked-by: Richard Cochran <richardcochran@gmail.com>
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diff mbox

Patch

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 60a1e93..2dddb1b 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -409,6 +409,12 @@  static struct tun_struct *tun_enable_queue(struct tun_file *tfile)
 	return tun;
 }
 
+static void tun_queue_purge(struct tun_file *tfile)
+{
+	skb_queue_purge(&tfile->sk.sk_receive_queue);
+	skb_queue_purge(&tfile->sk.sk_error_queue);
+}
+
 static void __tun_detach(struct tun_file *tfile, bool clean)
 {
 	struct tun_file *ntfile;
@@ -435,7 +441,7 @@  static void __tun_detach(struct tun_file *tfile, bool clean)
 		synchronize_net();
 		tun_flow_delete_by_queue(tun, tun->numqueues + 1);
 		/* Drop read queue */
-		skb_queue_purge(&tfile->sk.sk_receive_queue);
+		tun_queue_purge(tfile);
 		tun_set_real_num_queues(tun);
 	} else if (tfile->detached && clean) {
 		tun = tun_enable_queue(tfile);
@@ -487,12 +493,12 @@  static void tun_detach_all(struct net_device *dev)
 	for (i = 0; i < n; i++) {
 		tfile = rtnl_dereference(tun->tfiles[i]);
 		/* Drop read queue */
-		skb_queue_purge(&tfile->sk.sk_receive_queue);
+		tun_queue_purge(tfile);
 		sock_put(&tfile->sk);
 	}
 	list_for_each_entry_safe(tfile, tmp, &tun->disabled, next) {
 		tun_enable_queue(tfile);
-		skb_queue_purge(&tfile->sk.sk_receive_queue);
+		tun_queue_purge(tfile);
 		sock_put(&tfile->sk);
 	}
 	BUG_ON(tun->numdisabled != 0);