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/* -*- linux-c -*-
* transport_msgs.h - messages exchanged between module and userspace
*
* Copyright (C) Red Hat Inc, 2006-2008
*
* This file is part of systemtap, and is free software. You can
* redistribute it and/or modify it under the terms of the GNU General
* Public License (GPL); either version 2, or (at your option) any
* later version.
*/
#define STP_MODULE_NAME_LEN 64
struct _stp_trace {
uint32_t sequence; /* event number */
uint32_t pdu_len; /* length of data after this trace */
};
/* stp control channel command values */
enum
{
STP_START,
STP_EXIT,
STP_OOB_DATA,
STP_SYSTEM,
STP_SYMBOLS,
STP_MODULE,
STP_TRANSPORT,
STP_CONNECT,
STP_DISCONNECT,
STP_BULK,
STP_READY,
#ifdef STP_OLD_TRANSPORT
/** deprecated **/
STP_BUF_INFO,
STP_SUBBUFS_CONSUMED,
STP_REALTIME_DATA,
#endif
STP_MAX_CMD
};
#ifdef DEBUG_TRANSPORT
static const char *_stp_command_name[] = {
"STP_START",
"STP_EXIT",
"STP_OOB_DATA",
"STP_SYSTEM",
"STP_SYMBOLS",
"STP_MODULE",
"STP_TRANSPORT",
"STP_CONNECT",
"STP_DISCONNECT",
"STP_BULK",
"STP_READY",
#ifdef STP_OLD_TRANSPORT
"STP_BUF_INFO",
"STP_SUBBUFS_CONSUMED",
"STP_REALTIME_DATA",
#endif
};
#endif /* DEBUG_TRANSPORT */
/* control channel messages */
/* command to execute: sent to staprun */
struct _stp_msg_cmd
{
char cmd[128];
};
/* request for symbol data. sent to staprun */
struct _stp_msg_symbol
{
int32_t endian;
int32_t ptr_size;
};
/* Request to start probes. */
/* Sent from staprun. Then returned from module. */
struct _stp_msg_start
{
pid_t target;
int32_t res; // for reply: result of probe_start()
};
struct _stp_symbol32
{
uint32_t addr;
uint32_t symbol;
};
struct _stp_symbol64
{
uint64_t addr;
uint64_t symbol;
};
struct _stp_msg_symbol_hdr
{
uint32_t num_syms;
uint32_t sym_size;
uint32_t unwind_size;
};
struct _stp_msg_module {
/* the module name, or "" for kernel */
char name[STP_MODULE_NAME_LEN];
/* A pointer to the struct module */
uint64_t module;
/* the start of the module's text and data sections */
uint64_t text;
uint64_t data;
/* how many sections this module has */
uint32_t num_sections;
/* length of unwind data */
uint32_t unwind_len;
};
#ifdef STP_OLD_TRANSPORT
/**** for compatibility with old relayfs ****/
struct _stp_buf_info
{
int32_t cpu;
uint32_t produced;
uint32_t consumed;
int32_t flushing;
};
struct _stp_consumed_info
{
int32_t cpu;
uint32_t consumed;
};
#endif
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