linux-stable/net/l2tp/trace.h
Tom Parkin 2a03dd8e11 l2tp: add tracepoint definitions in trace.h
l2tp can provide a better debug experience using tracepoints rather than
printk-style logging.

Add tracepoint definitions in trace.h for use in the l2tp subsystem
code.

Add preprocessor definitions for the length of session and tunnel names
in l2tp_core.h so we can reuse these in trace.h.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-22 12:44:37 -07:00

211 lines
5.3 KiB
C

/* SPDX-License-Identifier: GPL-2.0-only */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM l2tp
#if !defined(_TRACE_L2TP_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_L2TP_H
#include <linux/tracepoint.h>
#include <linux/l2tp.h>
#include "l2tp_core.h"
#define encap_type_name(e) { L2TP_ENCAPTYPE_##e, #e }
#define show_encap_type_name(val) \
__print_symbolic(val, \
encap_type_name(UDP), \
encap_type_name(IP))
#define pw_type_name(p) { L2TP_PWTYPE_##p, #p }
#define show_pw_type_name(val) \
__print_symbolic(val, \
pw_type_name(ETH_VLAN), \
pw_type_name(ETH), \
pw_type_name(PPP), \
pw_type_name(PPP_AC), \
pw_type_name(IP))
DECLARE_EVENT_CLASS(tunnel_only_evt,
TP_PROTO(struct l2tp_tunnel *tunnel),
TP_ARGS(tunnel),
TP_STRUCT__entry(
__array(char, name, L2TP_TUNNEL_NAME_MAX)
),
TP_fast_assign(
memcpy(__entry->name, tunnel->name, L2TP_TUNNEL_NAME_MAX);
),
TP_printk("%s", __entry->name)
);
DECLARE_EVENT_CLASS(session_only_evt,
TP_PROTO(struct l2tp_session *session),
TP_ARGS(session),
TP_STRUCT__entry(
__array(char, name, L2TP_SESSION_NAME_MAX)
),
TP_fast_assign(
memcpy(__entry->name, session->name, L2TP_SESSION_NAME_MAX);
),
TP_printk("%s", __entry->name)
);
TRACE_EVENT(register_tunnel,
TP_PROTO(struct l2tp_tunnel *tunnel),
TP_ARGS(tunnel),
TP_STRUCT__entry(
__array(char, name, L2TP_TUNNEL_NAME_MAX)
__field(int, fd)
__field(u32, tid)
__field(u32, ptid)
__field(int, version)
__field(enum l2tp_encap_type, encap)
),
TP_fast_assign(
memcpy(__entry->name, tunnel->name, L2TP_TUNNEL_NAME_MAX);
__entry->fd = tunnel->fd;
__entry->tid = tunnel->tunnel_id;
__entry->ptid = tunnel->peer_tunnel_id;
__entry->version = tunnel->version;
__entry->encap = tunnel->encap;
),
TP_printk("%s: type=%s encap=%s version=L2TPv%d tid=%u ptid=%u fd=%d",
__entry->name,
__entry->fd > 0 ? "managed" : "unmanaged",
show_encap_type_name(__entry->encap),
__entry->version,
__entry->tid,
__entry->ptid,
__entry->fd)
);
DEFINE_EVENT(tunnel_only_evt, delete_tunnel,
TP_PROTO(struct l2tp_tunnel *tunnel),
TP_ARGS(tunnel)
);
DEFINE_EVENT(tunnel_only_evt, free_tunnel,
TP_PROTO(struct l2tp_tunnel *tunnel),
TP_ARGS(tunnel)
);
TRACE_EVENT(register_session,
TP_PROTO(struct l2tp_session *session),
TP_ARGS(session),
TP_STRUCT__entry(
__array(char, name, L2TP_SESSION_NAME_MAX)
__field(u32, tid)
__field(u32, ptid)
__field(u32, sid)
__field(u32, psid)
__field(enum l2tp_pwtype, pwtype)
),
TP_fast_assign(
memcpy(__entry->name, session->name, L2TP_SESSION_NAME_MAX);
__entry->tid = session->tunnel ? session->tunnel->tunnel_id : 0;
__entry->ptid = session->tunnel ? session->tunnel->peer_tunnel_id : 0;
__entry->sid = session->session_id;
__entry->psid = session->peer_session_id;
__entry->pwtype = session->pwtype;
),
TP_printk("%s: pseudowire=%s sid=%u psid=%u tid=%u ptid=%u",
__entry->name,
show_pw_type_name(__entry->pwtype),
__entry->sid,
__entry->psid,
__entry->sid,
__entry->psid)
);
DEFINE_EVENT(session_only_evt, delete_session,
TP_PROTO(struct l2tp_session *session),
TP_ARGS(session)
);
DEFINE_EVENT(session_only_evt, free_session,
TP_PROTO(struct l2tp_session *session),
TP_ARGS(session)
);
DEFINE_EVENT(session_only_evt, session_seqnum_lns_enable,
TP_PROTO(struct l2tp_session *session),
TP_ARGS(session)
);
DEFINE_EVENT(session_only_evt, session_seqnum_lns_disable,
TP_PROTO(struct l2tp_session *session),
TP_ARGS(session)
);
DECLARE_EVENT_CLASS(session_seqnum_evt,
TP_PROTO(struct l2tp_session *session),
TP_ARGS(session),
TP_STRUCT__entry(
__array(char, name, L2TP_SESSION_NAME_MAX)
__field(u32, ns)
__field(u32, nr)
),
TP_fast_assign(
memcpy(__entry->name, session->name, L2TP_SESSION_NAME_MAX);
__entry->ns = session->ns;
__entry->nr = session->nr;
),
TP_printk("%s: ns=%u nr=%u",
__entry->name,
__entry->ns,
__entry->nr)
);
DEFINE_EVENT(session_seqnum_evt, session_seqnum_update,
TP_PROTO(struct l2tp_session *session),
TP_ARGS(session)
);
DEFINE_EVENT(session_seqnum_evt, session_seqnum_reset,
TP_PROTO(struct l2tp_session *session),
TP_ARGS(session)
);
DECLARE_EVENT_CLASS(session_pkt_discard_evt,
TP_PROTO(struct l2tp_session *session, u32 pkt_ns),
TP_ARGS(session, pkt_ns),
TP_STRUCT__entry(
__array(char, name, L2TP_SESSION_NAME_MAX)
__field(u32, pkt_ns)
__field(u32, my_nr)
__field(u32, reorder_q_len)
),
TP_fast_assign(
memcpy(__entry->name, session->name, L2TP_SESSION_NAME_MAX);
__entry->pkt_ns = pkt_ns,
__entry->my_nr = session->nr;
__entry->reorder_q_len = skb_queue_len(&session->reorder_q);
),
TP_printk("%s: pkt_ns=%u my_nr=%u reorder_q_len=%u",
__entry->name,
__entry->pkt_ns,
__entry->my_nr,
__entry->reorder_q_len)
);
DEFINE_EVENT(session_pkt_discard_evt, session_pkt_expired,
TP_PROTO(struct l2tp_session *session, u32 pkt_ns),
TP_ARGS(session, pkt_ns)
);
DEFINE_EVENT(session_pkt_discard_evt, session_pkt_outside_rx_window,
TP_PROTO(struct l2tp_session *session, u32 pkt_ns),
TP_ARGS(session, pkt_ns)
);
DEFINE_EVENT(session_pkt_discard_evt, session_pkt_oos,
TP_PROTO(struct l2tp_session *session, u32 pkt_ns),
TP_ARGS(session, pkt_ns)
);
#endif /* _TRACE_L2TP_H */
/* This part must be outside protection */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>