From 3f47cb4c1cf3bceb2438ea962bfffc6665ee4a9f Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 29 Sep 2020 13:35:41 +0100 Subject: [PATCH] l2tp: report rx cookie discards in netlink get 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 Signed-off-by: David S. Miller --- 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..30c80d5ba4bf 100644 --- a/include/uapi/linux/l2tp.h +++ b/include/uapi/linux/l2tp.h @@ -144,6 +144,7 @@ enum { L2TP_ATTR_RX_OOS_PACKETS, /* u64 */ L2TP_ATTR_RX_ERRORS, /* u64 */ L2TP_ATTR_STATS_PAD, + L2TP_ATTR_RX_COOKIE_DISCARDS, /* u64 */ __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) ||