Byte/packet counters for in-tunnel and transport streams
are now initialized and updated as needed.
To be exported via netlink.
Signed-off-by: Antonio Quartulli <anto...@openvpn.net>
---
drivers/net/ovpn/Makefile | 1 +
drivers/net/ovpn/io.c | 12 +++++++++++-
drivers/net/ovpn/peer.c | 2 ++
drivers/net/ovpn/peer.h | 5 +++++
drivers/net/ovpn/stats.c | 21 +++++++++++++++++++++
drivers/net/ovpn/stats.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 87 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ovpn/Makefile b/drivers/net/ovpn/Makefile
index
38c9fdca0e2e8e4af3c369ceb3971b58ab52d77b..04c3345807c5d759daf65cc80a290f784dbf5588
100644
--- a/drivers/net/ovpn/Makefile
+++ b/drivers/net/ovpn/Makefile
@@ -17,4 +17,5 @@ ovpn-y += netlink-gen.o
ovpn-y += peer.o
ovpn-y += pktid.o
ovpn-y += socket.o
+ovpn-y += stats.o
ovpn-y += udp.o
diff --git a/drivers/net/ovpn/io.c b/drivers/net/ovpn/io.c
index
d0b410535ac340a53f010d0b2f20430b26bb012d..50dc2e4c03f01b02bdf616473b755b6e1e6b57f7
100644
--- a/drivers/net/ovpn/io.c
+++ b/drivers/net/ovpn/io.c
@@ -12,6 +12,7 @@
#include <linux/skbuff.h>
#include <net/gro_cells.h>
#include <net/gso.h>
+#include <net/ip.h>
#include "ovpnpriv.h"
#include "peer.h"
@@ -55,9 +56,11 @@ static void ovpn_netdev_write(struct ovpn_peer *peer, struct
sk_buff *skb)
/* cause packet to be "received" by the interface */
pkt_len = skb->len;
ret = gro_cells_receive(&peer->ovpn->gro_cells, skb);
- if (likely(ret == NET_RX_SUCCESS))
+ if (likely(ret == NET_RX_SUCCESS)) {
/* update RX stats with the size of decrypted packet */
+ ovpn_peer_stats_increment_rx(&peer->vpn_stats, pkt_len);
dev_sw_netstats_rx_add(peer->ovpn->dev, pkt_len);
+ }
}
void ovpn_decrypt_post(void *data, int ret)
@@ -158,6 +161,8 @@ void ovpn_recv(struct ovpn_peer *peer, struct sk_buff *skb)
struct ovpn_crypto_key_slot *ks;
u8 key_id;
+ ovpn_peer_stats_increment_rx(&peer->link_stats, skb->len);
+
/* get the key slot matching the key ID in the received packet */
key_id = ovpn_key_id_from_skb(skb);
ks = ovpn_crypto_key_id_to_slot(&peer->crypto, key_id);
@@ -181,6 +186,7 @@ void ovpn_encrypt_post(void *data, int ret)
struct sk_buff *skb = data;
struct ovpn_socket *sock;
struct ovpn_peer *peer;
+ unsigned int orig_len;
/* encryption is happening asynchronously. This function will be
* called later by the crypto callback with a proper return value
@@ -206,6 +212,7 @@ void ovpn_encrypt_post(void *data, int ret)
goto err;
skb_mark_not_on_list(skb);
+ orig_len = skb->len;
rcu_read_lock();
sock = rcu_dereference(peer->sock);
@@ -220,6 +227,8 @@ void ovpn_encrypt_post(void *data, int ret)
/* no transport configured yet */
goto err_unlock;
}
+
+ ovpn_peer_stats_increment_tx(&peer->link_stats, orig_len);
/* skb passed down the stack - don't free it */
skb = NULL;
err_unlock:
@@ -341,6 +350,7 @@ netdev_tx_t ovpn_net_xmit(struct sk_buff *skb, struct
net_device *dev)
goto drop;
}
+ ovpn_peer_stats_increment_tx(&peer->vpn_stats, skb->len);
ovpn_send(ovpn, skb_list.next, peer);
return NETDEV_TX_OK;
diff --git a/drivers/net/ovpn/peer.c b/drivers/net/ovpn/peer.c
index
69522f063e1882412f662d98af94ea9a058d2e74..1f4148475c8b93aabc72694da5af97ae00a3a59d
100644
--- a/drivers/net/ovpn/peer.c
+++ b/drivers/net/ovpn/peer.c
@@ -61,6 +61,8 @@ struct ovpn_peer *ovpn_peer_new(struct ovpn_priv *ovpn, u32
id)
ovpn_crypto_state_init(&peer->crypto);
spin_lock_init(&peer->lock);
kref_init(&peer->refcount);
+ ovpn_peer_stats_init(&peer->vpn_stats);
+ ovpn_peer_stats_init(&peer->link_stats);
ret = dst_cache_init(&peer->dst_cache, GFP_KERNEL);
if (ret < 0) {
diff --git a/drivers/net/ovpn/peer.h b/drivers/net/ovpn/peer.h
index
a9113a969f94d66fa17208d563d0bbd255c23fa9..2453d39ce327c6d174cfb35fe5430865b32c2efe
100644
--- a/drivers/net/ovpn/peer.h
+++ b/drivers/net/ovpn/peer.h
@@ -14,6 +14,7 @@
#include "crypto.h"
#include "socket.h"
+#include "stats.h"
/**
* struct ovpn_peer - the main remote peer object
@@ -27,6 +28,8 @@
* @crypto: the crypto configuration (ciphers, keys, etc..)
* @dst_cache: cache for dst_entry used to send to peer
* @bind: remote peer binding
+ * @vpn_stats: per-peer in-VPN TX/RX stats
+ * @link_stats: per-peer link/transport TX/RX stats
* @delete_reason: why peer was deleted (i.e. timeout, transport error, ..)
* @lock: protects binding to peer (bind)
* @refcount: reference counter
@@ -45,6 +48,8 @@ struct ovpn_peer {
struct ovpn_crypto_state crypto;
struct dst_cache dst_cache;
struct ovpn_bind __rcu *bind;
+ struct ovpn_peer_stats vpn_stats;
+ struct ovpn_peer_stats link_stats;
enum ovpn_del_peer_reason delete_reason;
spinlock_t lock; /* protects bind */
struct kref refcount;
diff --git a/drivers/net/ovpn/stats.c b/drivers/net/ovpn/stats.c
new file mode 100644
index
0000000000000000000000000000000000000000..d637143473bb913647c79832fd9eb3ebfd9efb59
--- /dev/null
+++ b/drivers/net/ovpn/stats.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+/* OpenVPN data channel offload
+ *
+ * Copyright (C) 2020-2025 OpenVPN, Inc.
+ *
+ * Author: James Yonan <ja...@openvpn.net>
+ * Antonio Quartulli <anto...@openvpn.net>
+ */
+
+#include <linux/atomic.h>
+
+#include "stats.h"
+
+void ovpn_peer_stats_init(struct ovpn_peer_stats *ps)
+{
+ atomic64_set(&ps->rx.bytes, 0);
+ atomic64_set(&ps->rx.packets, 0);
+
+ atomic64_set(&ps->tx.bytes, 0);
+ atomic64_set(&ps->tx.packets, 0);
+}
diff --git a/drivers/net/ovpn/stats.h b/drivers/net/ovpn/stats.h
new file mode 100644
index
0000000000000000000000000000000000000000..53433d8b6c33160845de2ae1ca38e85cf31950b7
--- /dev/null
+++ b/drivers/net/ovpn/stats.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* OpenVPN data channel offload
+ *
+ * Copyright (C) 2020-2025 OpenVPN, Inc.
+ *
+ * Author: James Yonan <ja...@openvpn.net>
+ * Antonio Quartulli <anto...@openvpn.net>
+ * Lev Stipakov <l...@openvpn.net>
+ */
+
+#ifndef _NET_OVPN_OVPNSTATS_H_
+#define _NET_OVPN_OVPNSTATS_H_
+
+/* one stat */
+struct ovpn_peer_stat {
+ atomic64_t bytes;
+ atomic64_t packets;
+};
+
+/* rx and tx stats combined */
+struct ovpn_peer_stats {
+ struct ovpn_peer_stat rx;
+ struct ovpn_peer_stat tx;
+};
+
+void ovpn_peer_stats_init(struct ovpn_peer_stats *ps);
+
+static inline void ovpn_peer_stats_increment(struct ovpn_peer_stat *stat,
+ const unsigned int n)
+{
+ atomic64_add(n, &stat->bytes);
+ atomic64_inc(&stat->packets);
+}
+
+static inline void ovpn_peer_stats_increment_rx(struct ovpn_peer_stats *stats,
+ const unsigned int n)
+{
+ ovpn_peer_stats_increment(&stats->rx, n);
+}
+
+static inline void ovpn_peer_stats_increment_tx(struct ovpn_peer_stats *stats,
+ const unsigned int n)
+{
+ ovpn_peer_stats_increment(&stats->tx, n);
+}
+
+#endif /* _NET_OVPN_OVPNSTATS_H_ */
--
2.45.3
