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authorJason Wang <jasowang@redhat.com>2013-09-05 17:53:59 +0800
committerDavid S. Miller <davem@davemloft.net>2013-09-05 12:44:31 -0400
commit4bfb0513ff203a700f5d17b97b772e8c171549bc (patch)
tree45afe486e61b2f23f6b32674087e9802a8ab06b6 /drivers/net/tun.c
parentdf95fc44c09f4c33e1d453674487a78f2779ba23 (diff)
tuntap: purge socket error queue on detach
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> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r--drivers/net/tun.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 60a1e93e9d35..2dddb1bc82c9 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);