l2tp: Add ppp device name to L2TP ppp session data
When dumping L2TP PPP sessions using /proc/net/pppol2tp, get the
assigned PPP device name from PPP using ppp_dev_name().
Signed-off-by: James Chapman <jchapman@katalix.com>
Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index baac072..3ad290d 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -1465,6 +1465,7 @@
struct l2tp_session *session = v;
struct l2tp_tunnel *tunnel = session->tunnel;
struct pppol2tp_session *ps = l2tp_session_priv(session);
+ struct pppox_sock *po = pppox_sk(ps->sock);
u32 ip = 0;
u16 port = 0;
@@ -1499,6 +1500,9 @@
(unsigned long long)session->stats.rx_packets,
(unsigned long long)session->stats.rx_bytes,
(unsigned long long)session->stats.rx_errors);
+
+ if (po)
+ seq_printf(m, " interface %s\n", ppp_dev_name(&po->chan));
}
static int pppol2tp_seq_show(struct seq_file *m, void *v)