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-rw-r--r--include/uapi/linux/l2tp.h1
-rw-r--r--net/l2tp/l2tp_core.c41
-rw-r--r--net/l2tp/l2tp_core.h1
-rw-r--r--net/l2tp/l2tp_netlink.c6
4 files changed, 30 insertions, 19 deletions
diff --git a/include/uapi/linux/l2tp.h b/include/uapi/linux/l2tp.h
index 30c80d5ba4bf..bab8c9708611 100644
--- a/include/uapi/linux/l2tp.h
+++ b/include/uapi/linux/l2tp.h
@@ -145,6 +145,7 @@ enum {
L2TP_ATTR_RX_ERRORS, /* u64 */
L2TP_ATTR_STATS_PAD,
L2TP_ATTR_RX_COOKIE_DISCARDS, /* u64 */
+ L2TP_ATTR_RX_INVALID, /* u64 */
__L2TP_ATTR_STATS_MAX,
};
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 7be5103ff2a8..203890e378cb 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -649,9 +649,9 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
/* Parse and check optional cookie */
if (session->peer_cookie_len > 0) {
if (memcmp(ptr, &session->peer_cookie[0], session->peer_cookie_len)) {
- pr_warn_ratelimited("%s: cookie mismatch (%u/%u). Discarding.\n",
- tunnel->name, tunnel->tunnel_id,
- session->session_id);
+ pr_debug_ratelimited("%s: cookie mismatch (%u/%u). Discarding.\n",
+ tunnel->name, tunnel->tunnel_id,
+ session->session_id);
atomic_long_inc(&session->stats.rx_cookie_discards);
goto discard;
}
@@ -702,8 +702,8 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
* If user has configured mandatory sequence numbers, discard.
*/
if (session->recv_seq) {
- pr_warn_ratelimited("%s: recv data has no seq numbers when required. Discarding.\n",
- session->name);
+ pr_debug_ratelimited("%s: recv data has no seq numbers when required. Discarding.\n",
+ session->name);
atomic_long_inc(&session->stats.rx_seq_discards);
goto discard;
}
@@ -718,8 +718,8 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
session->send_seq = 0;
l2tp_session_set_header_len(session, tunnel->version);
} else if (session->send_seq) {
- pr_warn_ratelimited("%s: recv data has no seq numbers when required. Discarding.\n",
- session->name);
+ pr_debug_ratelimited("%s: recv data has no seq numbers when required. Discarding.\n",
+ session->name);
atomic_long_inc(&session->stats.rx_seq_discards);
goto discard;
}
@@ -809,9 +809,9 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb)
/* Short packet? */
if (!pskb_may_pull(skb, L2TP_HDR_SIZE_MAX)) {
- pr_warn_ratelimited("%s: recv short packet (len=%d)\n",
- tunnel->name, skb->len);
- goto error;
+ pr_debug_ratelimited("%s: recv short packet (len=%d)\n",
+ tunnel->name, skb->len);
+ goto invalid;
}
/* Point to L2TP header */
@@ -824,9 +824,9 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb)
/* Check protocol version */
version = hdrflags & L2TP_HDR_VER_MASK;
if (version != tunnel->version) {
- pr_warn_ratelimited("%s: recv protocol version mismatch: got %d expected %d\n",
- tunnel->name, version, tunnel->version);
- goto error;
+ pr_debug_ratelimited("%s: recv protocol version mismatch: got %d expected %d\n",
+ tunnel->name, version, tunnel->version);
+ goto invalid;
}
/* Get length of L2TP packet */
@@ -834,7 +834,7 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb)
/* If type is control packet, it is handled by userspace. */
if (hdrflags & L2TP_HDRFLAG_T)
- goto error;
+ goto pass;
/* Skip flags */
ptr += 2;
@@ -863,21 +863,24 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb)
l2tp_session_dec_refcount(session);
/* Not found? Pass to userspace to deal with */
- pr_warn_ratelimited("%s: no session found (%u/%u). Passing up.\n",
- tunnel->name, tunnel_id, session_id);
- goto error;
+ pr_debug_ratelimited("%s: no session found (%u/%u). Passing up.\n",
+ tunnel->name, tunnel_id, session_id);
+ goto pass;
}
if (tunnel->version == L2TP_HDR_VER_3 &&
l2tp_v3_ensure_opt_in_linear(session, skb, &ptr, &optr))
- goto error;
+ goto invalid;
l2tp_recv_common(session, skb, ptr, optr, hdrflags, length);
l2tp_session_dec_refcount(session);
return 0;
-error:
+invalid:
+ atomic_long_inc(&tunnel->stats.rx_invalid);
+
+pass:
/* Put UDP header back */
__skb_push(skb, sizeof(struct udphdr));
diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h
index cb21d906343e..98ea98eb9567 100644
--- a/net/l2tp/l2tp_core.h
+++ b/net/l2tp/l2tp_core.h
@@ -39,6 +39,7 @@ struct l2tp_stats {
atomic_long_t rx_oos_packets;
atomic_long_t rx_errors;
atomic_long_t rx_cookie_discards;
+ atomic_long_t rx_invalid;
};
struct l2tp_tunnel;
diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
index 83956c9ee1fc..96eb91be9238 100644
--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -428,6 +428,9 @@ static int l2tp_nl_tunnel_send(struct sk_buff *skb, u32 portid, u32 seq, int fla
L2TP_ATTR_STATS_PAD) ||
nla_put_u64_64bit(skb, L2TP_ATTR_RX_ERRORS,
atomic_long_read(&tunnel->stats.rx_errors),
+ L2TP_ATTR_STATS_PAD) ||
+ nla_put_u64_64bit(skb, L2TP_ATTR_RX_INVALID,
+ atomic_long_read(&tunnel->stats.rx_invalid),
L2TP_ATTR_STATS_PAD))
goto nla_put_failure;
nla_nest_end(skb, nest);
@@ -771,6 +774,9 @@ static int l2tp_nl_session_send(struct sk_buff *skb, u32 portid, u32 seq, int fl
L2TP_ATTR_STATS_PAD) ||
nla_put_u64_64bit(skb, L2TP_ATTR_RX_ERRORS,
atomic_long_read(&session->stats.rx_errors),
+ L2TP_ATTR_STATS_PAD) ||
+ nla_put_u64_64bit(skb, L2TP_ATTR_RX_INVALID,
+ atomic_long_read(&session->stats.rx_invalid),
L2TP_ATTR_STATS_PAD))
goto nla_put_failure;
nla_nest_end(skb, nest);
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-26 05:10:13 +0000