net/l2tp/trace.h

Source file repositories/reference/linux-study-clean/net/l2tp/trace.h

File Facts

System
Linux kernel
Corpus path
net/l2tp/trace.h
Extension
.h
Size
5395 bytes
Lines
212
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: implementation source
Status
source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

#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),

Annotation

Implementation Notes