diff options
| author | Tom Parkin <tparkin@katalix.com> | 2013-03-19 06:11:19 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-20 12:10:39 -0400 |
| commit | 48f72f92b31431c40279b0fba6c5588e07e67d95 (patch) | |
| tree | 7a5aaf6723d503ae6ea56290b457f42c3ebd63e6 /net/l2tp/l2tp_core.c | |
| parent | 02d13ed5f94af38c37d1abd53462fe48d78bcc9d (diff) | |
| download | linux-48f72f92b31431c40279b0fba6c5588e07e67d95.tar.bz2 | |
l2tp: add session reorder queue purge function to core
If an l2tp session is deleted, it is necessary to delete skbs in-flight
on the session's reorder queue before taking it down.
Rather than having each pseudowire implementation reaching into the
l2tp_session struct to handle this itself, provide a function in l2tp_core to
purge the session queue.
Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp/l2tp_core.c')
| -rw-r--r-- | net/l2tp/l2tp_core.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index e841ef2a68a5..69c316dd02dc 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -829,6 +829,23 @@ discard: } EXPORT_SYMBOL(l2tp_recv_common); +/* Drop skbs from the session's reorder_q + */ +int l2tp_session_queue_purge(struct l2tp_session *session) +{ + struct sk_buff *skb = NULL; + BUG_ON(!session); + BUG_ON(session->magic != L2TP_SESSION_MAGIC); + while ((skb = skb_dequeue(&session->reorder_q))) { + atomic_long_inc(&session->stats.rx_errors); + kfree_skb(skb); + if (session->deref) + (*session->deref)(session); + } + return 0; +} +EXPORT_SYMBOL_GPL(l2tp_session_queue_purge); + /* Internal UDP receive frame. Do the real work of receiving an L2TP data frame * here. The skb is not on a list when we get here. * Returns 0 if the packet was a data packet and was successfully passed on. |