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| author | Guillaume Nault <g.nault@alphalink.fr> | 2014-03-06 11:15:10 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-06 14:25:39 -0500 |
| commit | 9e9cb6221aa7cb04765484fe87cc2d1b92edce64 (patch) | |
| tree | bc81e44f2e4e0c4a841cf19987c2e72547c1d464 /net/l2tp | |
| parent | bb5016eac1656506df1a9d6057ce5bec342afbef (diff) | |
| download | lwn-9e9cb6221aa7cb04765484fe87cc2d1b92edce64.tar.gz lwn-9e9cb6221aa7cb04765484fe87cc2d1b92edce64.zip | |
l2tp: fix userspace reception on plain L2TP sockets
As pppol2tp_recv() never queues up packets to plain L2TP sockets,
pppol2tp_recvmsg() never returns data to userspace, thus making
the recv*() system calls unusable.
Instead of dropping packets when the L2TP socket isn't bound to a PPP
channel, this patch adds them to its reception queue.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp')
| -rw-r--r-- | net/l2tp/l2tp_ppp.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 6bfeaa777135..5990919356a5 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -254,12 +254,14 @@ static void pppol2tp_recv(struct l2tp_session *session, struct sk_buff *skb, int po = pppox_sk(sk); ppp_input(&po->chan, skb); } else { - l2tp_info(session, PPPOL2TP_MSG_DATA, "%s: socket not bound\n", - session->name); + l2tp_dbg(session, PPPOL2TP_MSG_DATA, + "%s: recv %d byte data frame, passing to L2TP socket\n", + session->name, data_len); - /* Not bound. Nothing we can do, so discard. */ - atomic_long_inc(&session->stats.rx_errors); - kfree_skb(skb); + if (sock_queue_rcv_skb(sk, skb) < 0) { + atomic_long_inc(&session->stats.rx_errors); + kfree_skb(skb); + } } return; |