/* 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>