When an L2TPv3 session receives a data frame with an incorrect cookie
l2tp_core logs a warning message and bumps a stats counter to reflect
the fact that the packet has been dropped.
However, the stats counter in question is missing from the l2tp_netlink
get message for tunnel and session instances.
Include the statistic in the netlink get response.
Signed-off-by: Tom Parkin <tpar...@katalix.com>
---
include/uapi/linux/l2tp.h | 1 +
net/l2tp/l2tp_netlink.c | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/include/uapi/linux/l2tp.h b/include/uapi/linux/l2tp.h
index 88a0d32b8c07..7bf92e0606af 100644
--- a/include/uapi/linux/l2tp.h
+++ b/include/uapi/linux/l2tp.h
@@ -143,6 +143,7 @@ enum {
L2TP_ATTR_RX_SEQ_DISCARDS, /* u64 */
L2TP_ATTR_RX_OOS_PACKETS, /* u64 */
L2TP_ATTR_RX_ERRORS, /* u64 */
+ L2TP_ATTR_RX_COOKIE_DISCARDS, /* u64 */
L2TP_ATTR_STATS_PAD,
__L2TP_ATTR_STATS_MAX,
};
diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
index 83c015f7f20d..5ca5056e9636 100644
--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -420,6 +420,9 @@ static int l2tp_nl_tunnel_send(struct sk_buff *skb, u32
portid, u32 seq, int fla
nla_put_u64_64bit(skb, L2TP_ATTR_RX_SEQ_DISCARDS,
atomic_long_read(&tunnel->stats.rx_seq_discards),
L2TP_ATTR_STATS_PAD) ||
+ nla_put_u64_64bit(skb, L2TP_ATTR_RX_COOKIE_DISCARDS,
+
atomic_long_read(&tunnel->stats.rx_cookie_discards),
+ L2TP_ATTR_STATS_PAD) ||
nla_put_u64_64bit(skb, L2TP_ATTR_RX_OOS_PACKETS,
atomic_long_read(&tunnel->stats.rx_oos_packets),
L2TP_ATTR_STATS_PAD) ||
@@ -760,6 +763,9 @@ static int l2tp_nl_session_send(struct sk_buff *skb, u32
portid, u32 seq, int fl
nla_put_u64_64bit(skb, L2TP_ATTR_RX_SEQ_DISCARDS,
atomic_long_read(&session->stats.rx_seq_discards),
L2TP_ATTR_STATS_PAD) ||
+ nla_put_u64_64bit(skb, L2TP_ATTR_RX_COOKIE_DISCARDS,
+
atomic_long_read(&session->stats.rx_cookie_discards),
+ L2TP_ATTR_STATS_PAD) ||
nla_put_u64_64bit(skb, L2TP_ATTR_RX_OOS_PACKETS,
atomic_long_read(&session->stats.rx_oos_packets),
L2TP_ATTR_STATS_PAD) ||
--
2.17.1
