linux/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.h
Arend van Spriel ea0737d6e2 brcmfmac: add trace event for capturing BDC header
The BDC header contains PropTx TLV signals that are useful to capture
for debugging. This event captures the header and tlv's in binary
form. This can be post-processed using trace-cmd plugin.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-06-12 15:06:24 -04:00

123 lines
3.3 KiB
C

/*
* Copyright (c) 2013 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#if !defined(BRCMF_TRACEPOINT_H_) || defined(TRACE_HEADER_MULTI_READ)
#define BRCMF_TRACEPOINT_H_
#include <linux/types.h>
#include <linux/tracepoint.h>
#ifndef CONFIG_BRCM_TRACING
#undef TRACE_EVENT
#define TRACE_EVENT(name, proto, ...) \
static inline void trace_ ## name(proto) {}
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(...)
#undef DEFINE_EVENT
#define DEFINE_EVENT(evt_class, name, proto, ...) \
static inline void trace_ ## name(proto) {}
#endif /* CONFIG_BRCM_TRACING */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM brcmfmac
#define MAX_MSG_LEN 100
TRACE_EVENT(brcmf_err,
TP_PROTO(const char *func, struct va_format *vaf),
TP_ARGS(func, vaf),
TP_STRUCT__entry(
__string(func, func)
__dynamic_array(char, msg, MAX_MSG_LEN)
),
TP_fast_assign(
__assign_str(func, func);
WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg),
MAX_MSG_LEN, vaf->fmt,
*vaf->va) >= MAX_MSG_LEN);
),
TP_printk("%s: %s", __get_str(func), __get_str(msg))
);
TRACE_EVENT(brcmf_dbg,
TP_PROTO(u32 level, const char *func, struct va_format *vaf),
TP_ARGS(level, func, vaf),
TP_STRUCT__entry(
__field(u32, level)
__string(func, func)
__dynamic_array(char, msg, MAX_MSG_LEN)
),
TP_fast_assign(
__entry->level = level;
__assign_str(func, func);
WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg),
MAX_MSG_LEN, vaf->fmt,
*vaf->va) >= MAX_MSG_LEN);
),
TP_printk("%s: %s", __get_str(func), __get_str(msg))
);
TRACE_EVENT(brcmf_hexdump,
TP_PROTO(void *data, size_t len),
TP_ARGS(data, len),
TP_STRUCT__entry(
__field(unsigned long, len)
__dynamic_array(u8, hdata, len)
),
TP_fast_assign(
__entry->len = len;
memcpy(__get_dynamic_array(hdata), data, len);
),
TP_printk("hexdump [length=%lu]", __entry->len)
);
TRACE_EVENT(brcmf_bdchdr,
TP_PROTO(void *data),
TP_ARGS(data),
TP_STRUCT__entry(
__field(u8, flags)
__field(u8, prio)
__field(u8, flags2)
__field(u32, siglen)
__dynamic_array(u8, signal, *((u8 *)data + 3) * 4)
),
TP_fast_assign(
__entry->flags = *(u8 *)data;
__entry->prio = *((u8 *)data + 1);
__entry->flags2 = *((u8 *)data + 2);
__entry->siglen = *((u8 *)data + 3) * 4;
memcpy(__get_dynamic_array(signal),
(u8 *)data + 4, __entry->siglen);
),
TP_printk("bdc: prio=%d siglen=%d", __entry->prio, __entry->siglen)
);
#ifdef CONFIG_BRCM_TRACING
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE tracepoint
#include <trace/define_trace.h>
#endif /* CONFIG_BRCM_TRACING */
#endif /* BRCMF_TRACEPOINT_H_ */