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Date:	Thu, 18 Mar 2010 10:21:49 +0000
From:	James Chapman <jchapman@...alix.com>
To:	netdev@...r.kernel.org
Subject: [PATCH 04/12] l2tp: Add ppp device name to L2TP ppp session data

When dumping L2TP PPP sessions using /proc/net/l2tp, get
the assigned PPP device name from PPP using ppp_dev_name().

Signed-off-by: James Chapman <jchapman@...alix.com>
---
 net/l2tp/l2tp_ppp.c |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index 03195ab..8f78c27 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -608,6 +608,20 @@ out:
 	return error;
 }
 
+#ifdef CONFIG_PROC_FS
+static void pppol2tp_show(struct seq_file *m, void *arg)
+{
+	struct l2tp_session *session = arg;
+	struct pppol2tp_session *ps = l2tp_session_priv(session);
+
+	if (ps) {
+		struct pppox_sock *po = pppox_sk(ps->sock);
+		if (po)
+			seq_printf(m, "   interface %s\n", ppp_dev_name(&po->chan));
+	}
+}
+#endif
+
 /* connect() handler. Attach a PPPoX socket to a tunnel UDP socket
  */
 static int pppol2tp_connect(struct socket *sock, struct sockaddr *uservaddr,
@@ -697,6 +711,9 @@ static int pppol2tp_connect(struct socket *sock, struct sockaddr *uservaddr,
 
 	session->recv_skb	= pppol2tp_recv;
 	session->session_close	= pppol2tp_session_close;
+#ifdef CONFIG_PROC_FS
+	session->show		= pppol2tp_show;
+#endif
 
 	/* We need to know each time a skb is dropped from the reorder
 	 * queue.

--
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