root/include/trace/events/9p.h
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM 9p

#if !defined(_TRACE_9P_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_9P_H

#include <linux/tracepoint.h>

#define P9_MSG_T                                                        \
                EM( P9_TLERROR,         "P9_TLERROR" )                  \
                EM( P9_RLERROR,         "P9_RLERROR" )                  \
                EM( P9_TSTATFS,         "P9_TSTATFS" )                  \
                EM( P9_RSTATFS,         "P9_RSTATFS" )                  \
                EM( P9_TLOPEN,          "P9_TLOPEN" )                   \
                EM( P9_RLOPEN,          "P9_RLOPEN" )                   \
                EM( P9_TLCREATE,        "P9_TLCREATE" )                 \
                EM( P9_RLCREATE,        "P9_RLCREATE" )                 \
                EM( P9_TSYMLINK,        "P9_TSYMLINK" )                 \
                EM( P9_RSYMLINK,        "P9_RSYMLINK" )                 \
                EM( P9_TMKNOD,          "P9_TMKNOD" )                   \
                EM( P9_RMKNOD,          "P9_RMKNOD" )                   \
                EM( P9_TRENAME,         "P9_TRENAME" )                  \
                EM( P9_RRENAME,         "P9_RRENAME" )                  \
                EM( P9_TREADLINK,       "P9_TREADLINK" )                \
                EM( P9_RREADLINK,       "P9_RREADLINK" )                \
                EM( P9_TGETATTR,        "P9_TGETATTR" )                 \
                EM( P9_RGETATTR,        "P9_RGETATTR" )                 \
                EM( P9_TSETATTR,        "P9_TSETATTR" )                 \
                EM( P9_RSETATTR,        "P9_RSETATTR" )                 \
                EM( P9_TXATTRWALK,      "P9_TXATTRWALK" )               \
                EM( P9_RXATTRWALK,      "P9_RXATTRWALK" )               \
                EM( P9_TXATTRCREATE,    "P9_TXATTRCREATE" )             \
                EM( P9_RXATTRCREATE,    "P9_RXATTRCREATE" )             \
                EM( P9_TREADDIR,        "P9_TREADDIR" )                 \
                EM( P9_RREADDIR,        "P9_RREADDIR" )                 \
                EM( P9_TFSYNC,          "P9_TFSYNC" )                   \
                EM( P9_RFSYNC,          "P9_RFSYNC" )                   \
                EM( P9_TLOCK,           "P9_TLOCK" )                    \
                EM( P9_RLOCK,           "P9_RLOCK" )                    \
                EM( P9_TGETLOCK,        "P9_TGETLOCK" )                 \
                EM( P9_RGETLOCK,        "P9_RGETLOCK" )                 \
                EM( P9_TLINK,           "P9_TLINK" )                    \
                EM( P9_RLINK,           "P9_RLINK" )                    \
                EM( P9_TMKDIR,          "P9_TMKDIR" )                   \
                EM( P9_RMKDIR,          "P9_RMKDIR" )                   \
                EM( P9_TRENAMEAT,       "P9_TRENAMEAT" )                \
                EM( P9_RRENAMEAT,       "P9_RRENAMEAT" )                \
                EM( P9_TUNLINKAT,       "P9_TUNLINKAT" )                \
                EM( P9_RUNLINKAT,       "P9_RUNLINKAT" )                \
                EM( P9_TVERSION,        "P9_TVERSION" )                 \
                EM( P9_RVERSION,        "P9_RVERSION" )                 \
                EM( P9_TAUTH,           "P9_TAUTH" )                    \
                EM( P9_RAUTH,           "P9_RAUTH" )                    \
                EM( P9_TATTACH,         "P9_TATTACH" )                  \
                EM( P9_RATTACH,         "P9_RATTACH" )                  \
                EM( P9_TERROR,          "P9_TERROR" )                   \
                EM( P9_RERROR,          "P9_RERROR" )                   \
                EM( P9_TFLUSH,          "P9_TFLUSH" )                   \
                EM( P9_RFLUSH,          "P9_RFLUSH" )                   \
                EM( P9_TWALK,           "P9_TWALK" )                    \
                EM( P9_RWALK,           "P9_RWALK" )                    \
                EM( P9_TOPEN,           "P9_TOPEN" )                    \
                EM( P9_ROPEN,           "P9_ROPEN" )                    \
                EM( P9_TCREATE,         "P9_TCREATE" )                  \
                EM( P9_RCREATE,         "P9_RCREATE" )                  \
                EM( P9_TREAD,           "P9_TREAD" )                    \
                EM( P9_RREAD,           "P9_RREAD" )                    \
                EM( P9_TWRITE,          "P9_TWRITE" )                   \
                EM( P9_RWRITE,          "P9_RWRITE" )                   \
                EM( P9_TCLUNK,          "P9_TCLUNK" )                   \
                EM( P9_RCLUNK,          "P9_RCLUNK" )                   \
                EM( P9_TREMOVE,         "P9_TREMOVE" )                  \
                EM( P9_RREMOVE,         "P9_RREMOVE" )                  \
                EM( P9_TSTAT,           "P9_TSTAT" )                    \
                EM( P9_RSTAT,           "P9_RSTAT" )                    \
                EM( P9_TWSTAT,          "P9_TWSTAT" )                   \
                EMe(P9_RWSTAT,          "P9_RWSTAT" )


#define P9_FID_REFTYPE                                                  \
                EM( P9_FID_REF_CREATE,  "create " )                     \
                EM( P9_FID_REF_GET,     "get    " )                     \
                EM( P9_FID_REF_PUT,     "put    " )                     \
                EMe(P9_FID_REF_DESTROY, "destroy" )

/* Define EM() to export the enums to userspace via TRACE_DEFINE_ENUM() */
#undef EM
#undef EMe
#define EM(a, b)        TRACE_DEFINE_ENUM(a);
#define EMe(a, b)       TRACE_DEFINE_ENUM(a);

P9_MSG_T
P9_FID_REFTYPE

/* And also use EM/EMe to define helper enums -- once */
#ifndef __9P_DECLARE_TRACE_ENUMS_ONLY_ONCE
#define __9P_DECLARE_TRACE_ENUMS_ONLY_ONCE
#undef EM
#undef EMe
#define EM(a, b)        a,
#define EMe(a, b)       a

enum p9_fid_reftype {
        P9_FID_REFTYPE
} __mode(byte);

#endif

/*
 * Now redefine the EM() and EMe() macros to map the enums to the strings
 * that will be printed in the output.
 */
#undef EM
#undef EMe
#define EM(a, b)        { a, b },
#define EMe(a, b)       { a, b }

#define show_9p_op(type)                                                \
        __print_symbolic(type, P9_MSG_T)
#define show_9p_fid_reftype(type)                                       \
        __print_symbolic(type, P9_FID_REFTYPE)

TRACE_EVENT(9p_client_req,
            TP_PROTO(struct p9_client *clnt, int8_t type, int tag),

            TP_ARGS(clnt, type, tag),

            TP_STRUCT__entry(
                    __field(    void *,         clnt                         )
                    __field(    __u8,           type                         )
                    __field(    __u32,          tag                          )
                    ),

            TP_fast_assign(
                    __entry->clnt    =  clnt;
                    __entry->type    =  type;
                    __entry->tag     =  tag;
                    ),

            TP_printk("client %lu request %s tag  %d",
                    (long)__entry->clnt, show_9p_op(__entry->type),
                    __entry->tag)
 );

TRACE_EVENT(9p_client_res,
            TP_PROTO(struct p9_client *clnt, int8_t type, int tag, int err),

            TP_ARGS(clnt, type, tag, err),

            TP_STRUCT__entry(
                    __field(    void *,         clnt                         )
                    __field(    __u8,           type                         )
                    __field(    __u32,          tag                          )
                    __field(    __u32,          err                          )
                    ),

            TP_fast_assign(
                    __entry->clnt    =  clnt;
                    __entry->type    =  type;
                    __entry->tag     =  tag;
                    __entry->err     =  err;
                    ),

            TP_printk("client %lu response %s tag  %d err %d",
                      (long)__entry->clnt, show_9p_op(__entry->type),
                      __entry->tag, __entry->err)
);

/* dump 32 bytes of protocol data */
#define P9_PROTO_DUMP_SZ 32
TRACE_EVENT(9p_protocol_dump,
            TP_PROTO(struct p9_client *clnt, struct p9_fcall *pdu),

            TP_ARGS(clnt, pdu),

            TP_STRUCT__entry(
                    __field(    void *,         clnt                            )
                    __field(    __u8,           type                            )
                    __field(    __u16,          tag                             )
                    __dynamic_array(unsigned char, line,
                                min_t(size_t, pdu->capacity, P9_PROTO_DUMP_SZ))
                    ),

            TP_fast_assign(
                    __entry->clnt   =  clnt;
                    __entry->type   =  pdu->id;
                    __entry->tag    =  pdu->tag;
                    memcpy(__get_dynamic_array(line), pdu->sdata,
                                __get_dynamic_array_len(line));
                    ),
            TP_printk("clnt %lu %s(tag = %d)\n%*ph\n",
                      (unsigned long)__entry->clnt, show_9p_op(__entry->type),
                      __entry->tag, __get_dynamic_array_len(line),
                      __get_dynamic_array(line))
 );


TRACE_EVENT(9p_fid_ref,
            TP_PROTO(struct p9_fid *fid, __u8 type),

            TP_ARGS(fid, type),

            TP_STRUCT__entry(
                    __field(    int,    fid             )
                    __field(    int,    refcount        )
                    __field(    __u8, type      )
                    ),

            TP_fast_assign(
                    __entry->fid = fid->fid;
                    __entry->refcount = refcount_read(&fid->count);
                    __entry->type = type;
                    ),

            TP_printk("%s fid %d, refcount %d",
                      show_9p_fid_reftype(__entry->type),
                      __entry->fid, __entry->refcount)
);


#endif /* _TRACE_9P_H */

/* This part must be outside protection */
#include <trace/define_trace.h>