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Mon, 10 Feb 2025 16:41:11 -0800 (PST) From: Antonio Quartulli Date: Tue, 11 Feb 2025 01:40:03 +0100 Subject: [PATCH net-next v19 10/26] ovpn: store tunnel and transport statistics Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250211-b4-ovpn-v19-10-86d5daf2a47a@openvpn.net> References: <20250211-b4-ovpn-v19-0-86d5daf2a47a@openvpn.net> In-Reply-To: <20250211-b4-ovpn-v19-0-86d5daf2a47a@openvpn.net> To: netdev@vger.kernel.org, Eric Dumazet , Jakub Kicinski , Paolo Abeni , Donald Hunter , Antonio Quartulli , Shuah Khan , sd@queasysnail.net, ryazanov.s.a@gmail.com, Andrew Lunn Cc: Simon Horman , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Xiao Liang X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=7109; i=antonio@openvpn.net; h=from:subject:message-id; bh=wwQNq2Q0TBrFSrOZM1DftROi8CAvU51ZzQxaUwKNLLo=; b=owEBbQGS/pANAwAIAQtw5TqgONWHAcsmYgBnqpyN4x7Lmu4CWFZAm3jGl+zHPwwPvZNkGJoNF D6qiaYCrdSJATMEAAEIAB0WIQSZq9xs+NQS5N5fwPwLcOU6oDjVhwUCZ6qcjQAKCRALcOU6oDjV hy5CCACLEtAxHzIDso4ajThT2HDI6sItY0+8E8EG8otg+zgktqiF1+DaksVHOezMN3Beg/nCEN2 s2fB0Qo7NSUZ0N9HPO7v4nfF9xbQq+yK2BqBM2vEtl0dIBz99evdEkegSYsrZy1XayrHsIlM3+d C72P58RI8DGntEpnc8Dcmw6VUcMi6vD8Kqc03pYKVzv8jbPq0NqW2sWSjUMxnK9llFe0gYtPLGn Ci2266y0dV7zbE0TH3AhD+FyoTgMN/BOWnOH/yaimYbnnRXxebECEXMntdsUJVqVwVIgsW33clW CKpCUMZ8LlVzOnOIiKDyvNYLieDQlApYWh1jvxJuJmA0BCih X-Developer-Key: i=antonio@openvpn.net; a=openpgp; fpr=CABDA1282017C267219885C748F0CCB68F59D14C 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 --- 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 ccdaeced1982c851475657860a005ff2b9dfbd13..d43fda72646bdc7644d9a878b56= da0a0e5680c98 100644 --- a/drivers/net/ovpn/Makefile +++ b/drivers/net/ovpn/Makefile @@ -17,4 +17,5 @@ ovpn-y +=3D netlink-gen.o ovpn-y +=3D peer.o ovpn-y +=3D pktid.o ovpn-y +=3D socket.o +ovpn-y +=3D stats.o ovpn-y +=3D udp.o diff --git a/drivers/net/ovpn/io.c b/drivers/net/ovpn/io.c index 2cbae584efe946813d0857c7c2c3d3ec2965c3a5..34753eea78aa634f2e01370797e= 243b615d0c996 100644 --- a/drivers/net/ovpn/io.c +++ b/drivers/net/ovpn/io.c @@ -12,6 +12,7 @@ #include #include #include +#include =20 #include "ovpnpriv.h" #include "peer.h" @@ -55,9 +56,11 @@ static void ovpn_netdev_write(struct ovpn_peer *peer, st= ruct sk_buff *skb) /* cause packet to be "received" by the interface */ pkt_len =3D skb->len; ret =3D gro_cells_receive(&peer->ovpn->gro_cells, skb); - if (likely(ret =3D=3D NET_RX_SUCCESS)) + if (likely(ret =3D=3D 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); + } } =20 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; =20 + ovpn_peer_stats_increment_rx(&peer->link_stats, skb->len); + /* get the key slot matching the key ID in the received packet */ key_id =3D ovpn_key_id_from_skb(skb); ks =3D 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 =3D data; struct ovpn_socket *sock; struct ovpn_peer *peer; + unsigned int orig_len; =20 /* 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; =20 skb_mark_not_on_list(skb); + orig_len =3D skb->len; =20 rcu_read_lock(); sock =3D 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 =3D NULL; err_unlock: @@ -341,6 +350,7 @@ netdev_tx_t ovpn_net_xmit(struct sk_buff *skb, struct n= et_device *dev) goto drop; } =20 + ovpn_peer_stats_increment_tx(&peer->vpn_stats, skb->len); ovpn_send(ovpn, skb_list.next, peer); =20 return NETDEV_TX_OK; diff --git a/drivers/net/ovpn/peer.c b/drivers/net/ovpn/peer.c index 0988b48e30d3b041d971e717313b05446e2ab2e2..2e69b098d53bd8c2e549b712530= d746f5125cff0 100644 --- a/drivers/net/ovpn/peer.c +++ b/drivers/net/ovpn/peer.c @@ -47,6 +47,8 @@ struct ovpn_peer *ovpn_peer_new(struct ovpn_priv *ovpn, u= 32 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); =20 ret =3D 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 aae4611cf22519d00f3e4b63fc6546433c315648..9cc25ab350f4af98f8af3b75dfd= 57b8a493d433a 100644 --- a/drivers/net/ovpn/peer.h +++ b/drivers/net/ovpn/peer.h @@ -14,6 +14,7 @@ =20 #include "crypto.h" #include "socket.h" +#include "stats.h" =20 /** * 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..a383842c3449b73694c318837b0= b92eb9afaec22 --- /dev/null +++ b/drivers/net/ovpn/stats.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0 +/* OpenVPN data channel offload + * + * Copyright (C) 2020-2024 OpenVPN, Inc. + * + * Author: James Yonan + * Antonio Quartulli + */ + +#include + +#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..868f49d25eaa8fef04a02a61c36= 3d95f9c9ef80a --- /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) 2020-2024 OpenVPN, Inc. + * + * Author: James Yonan + * Antonio Quartulli + * Lev Stipakov + */ + +#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 *st= ats, + const unsigned int n) +{ + ovpn_peer_stats_increment(&stats->rx, n); +} + +static inline void ovpn_peer_stats_increment_tx(struct ovpn_peer_stats *st= ats, + const unsigned int n) +{ + ovpn_peer_stats_increment(&stats->tx, n); +} + +#endif /* _NET_OVPN_OVPNSTATS_H_ */ --=20 2.45.3