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android_kernel_motorola_sm6225/drivers/net/wireless/iwlwifi/iwl-devtrace.h
Johannes Berg f042c2eb96 iwlwifi: make data frame tracing optional 
When tracing in iwlwifi, we get all data. Most of
the time, we don't need it, and it just takes up
a lot of extra space in the trace.

Make this optional by recording the data into two
separate trace events if it is needed. Without it,
record only the content of non-data and EAPOL TX
frames.

As a result, tracing without the data tracepoints
will record meta information including the 802.11
headers for all frames but will not record the
contents of data frames to reduce trace overhead.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-16 16:30:45 +02:00

482 lines
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/******************************************************************************
*
* Copyright(c) 2009 - 2012 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#if !defined(__IWLWIFI_DEVICE_TRACE) || defined(TRACE_HEADER_MULTI_READ)
#include <linux/skbuff.h>
#include <linux/ieee80211.h>
#include <net/cfg80211.h>
#include "iwl-trans.h"
#if !defined(__IWLWIFI_DEVICE_TRACE)
static inline bool iwl_trace_data(struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (void *)skb->data;
if (ieee80211_is_data(hdr->frame_control))
return skb->protocol != cpu_to_be16(ETH_P_PAE);
return false;
}
static inline size_t iwl_rx_trace_len(const struct iwl_trans *trans,
void *rxbuf, size_t len)
{
struct iwl_cmd_header *cmd = (void *)((u8 *)rxbuf + sizeof(__le32));
struct ieee80211_hdr *hdr;
if (cmd->cmd != trans->rx_mpdu_cmd)
return len;
hdr = (void *)((u8 *)cmd + sizeof(struct iwl_cmd_header) +
trans->rx_mpdu_cmd_hdr_size);
if (!ieee80211_is_data(hdr->frame_control))
return len;
/* maybe try to identify EAPOL frames? */
return sizeof(__le32) + sizeof(*cmd) + trans->rx_mpdu_cmd_hdr_size +
ieee80211_hdrlen(hdr->frame_control);
}
#endif
#define __IWLWIFI_DEVICE_TRACE
#include <linux/tracepoint.h>
#include <linux/device.h>
#include "iwl-trans.h"
#if !defined(CONFIG_IWLWIFI_DEVICE_TRACING) || defined(__CHECKER__)
#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
#define DEV_ENTRY __string(dev, dev_name(dev))
#define DEV_ASSIGN __assign_str(dev, dev_name(dev))
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi_io
TRACE_EVENT(iwlwifi_dev_ioread32,
TP_PROTO(const struct device *dev, u32 offs, u32 val),
TP_ARGS(dev, offs, val),
TP_STRUCT__entry(
DEV_ENTRY
__field(u32, offs)
__field(u32, val)
),
TP_fast_assign(
DEV_ASSIGN;
__entry->offs = offs;
__entry->val = val;
),
TP_printk("[%s] read io[%#x] = %#x",
__get_str(dev), __entry->offs, __entry->val)
);
TRACE_EVENT(iwlwifi_dev_iowrite8,
TP_PROTO(const struct device *dev, u32 offs, u8 val),
TP_ARGS(dev, offs, val),
TP_STRUCT__entry(
DEV_ENTRY
__field(u32, offs)
__field(u8, val)
),
TP_fast_assign(
DEV_ASSIGN;
__entry->offs = offs;
__entry->val = val;
),
TP_printk("[%s] write io[%#x] = %#x)",
__get_str(dev), __entry->offs, __entry->val)
);
TRACE_EVENT(iwlwifi_dev_iowrite32,
TP_PROTO(const struct device *dev, u32 offs, u32 val),
TP_ARGS(dev, offs, val),
TP_STRUCT__entry(
DEV_ENTRY
__field(u32, offs)
__field(u32, val)
),
TP_fast_assign(
DEV_ASSIGN;
__entry->offs = offs;
__entry->val = val;
),
TP_printk("[%s] write io[%#x] = %#x)",
__get_str(dev), __entry->offs, __entry->val)
);
TRACE_EVENT(iwlwifi_dev_irq,
TP_PROTO(const struct device *dev),
TP_ARGS(dev),
TP_STRUCT__entry(
DEV_ENTRY
),
TP_fast_assign(
DEV_ASSIGN;
),
/* TP_printk("") doesn't compile */
TP_printk("%d", 0)
);
TRACE_EVENT(iwlwifi_dev_ict_read,
TP_PROTO(const struct device *dev, u32 index, u32 value),
TP_ARGS(dev, index, value),
TP_STRUCT__entry(
DEV_ENTRY
__field(u32, index)
__field(u32, value)
),
TP_fast_assign(
DEV_ASSIGN;
__entry->index = index;
__entry->value = value;
),
TP_printk("[%s] read ict[%d] = %#.8x",
__get_str(dev), __entry->index, __entry->value)
);
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi_ucode
TRACE_EVENT(iwlwifi_dev_ucode_cont_event,
TP_PROTO(const struct device *dev, u32 time, u32 data, u32 ev),
TP_ARGS(dev, time, data, ev),
TP_STRUCT__entry(
DEV_ENTRY
__field(u32, time)
__field(u32, data)
__field(u32, ev)
),
TP_fast_assign(
DEV_ASSIGN;
__entry->time = time;
__entry->data = data;
__entry->ev = ev;
),
TP_printk("[%s] EVT_LOGT:%010u:0x%08x:%04u",
__get_str(dev), __entry->time, __entry->data, __entry->ev)
);
TRACE_EVENT(iwlwifi_dev_ucode_wrap_event,
TP_PROTO(const struct device *dev, u32 wraps, u32 n_entry, u32 p_entry),
TP_ARGS(dev, wraps, n_entry, p_entry),
TP_STRUCT__entry(
DEV_ENTRY
__field(u32, wraps)
__field(u32, n_entry)
__field(u32, p_entry)
),
TP_fast_assign(
DEV_ASSIGN;
__entry->wraps = wraps;
__entry->n_entry = n_entry;
__entry->p_entry = p_entry;
),
TP_printk("[%s] wraps=#%02d n=0x%X p=0x%X",
__get_str(dev), __entry->wraps, __entry->n_entry,
__entry->p_entry)
);
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi_msg
#define MAX_MSG_LEN 110
DECLARE_EVENT_CLASS(iwlwifi_msg_event,
TP_PROTO(struct va_format *vaf),
TP_ARGS(vaf),
TP_STRUCT__entry(
__dynamic_array(char, msg, MAX_MSG_LEN)
),
TP_fast_assign(
WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg),
MAX_MSG_LEN, vaf->fmt,
*vaf->va) >= MAX_MSG_LEN);
),
TP_printk("%s", __get_str(msg))
);
DEFINE_EVENT(iwlwifi_msg_event, iwlwifi_err,
TP_PROTO(struct va_format *vaf),
TP_ARGS(vaf)
);
DEFINE_EVENT(iwlwifi_msg_event, iwlwifi_warn,
TP_PROTO(struct va_format *vaf),
TP_ARGS(vaf)
);
DEFINE_EVENT(iwlwifi_msg_event, iwlwifi_info,
TP_PROTO(struct va_format *vaf),
TP_ARGS(vaf)
);
DEFINE_EVENT(iwlwifi_msg_event, iwlwifi_crit,
TP_PROTO(struct va_format *vaf),
TP_ARGS(vaf)
);
TRACE_EVENT(iwlwifi_dbg,
TP_PROTO(u32 level, bool in_interrupt, const char *function,
struct va_format *vaf),
TP_ARGS(level, in_interrupt, function, vaf),
TP_STRUCT__entry(
__field(u32, level)
__field(u8, in_interrupt)
__string(function, function)
__dynamic_array(char, msg, MAX_MSG_LEN)
),
TP_fast_assign(
__entry->level = level;
__entry->in_interrupt = in_interrupt;
__assign_str(function, function);
WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg),
MAX_MSG_LEN, vaf->fmt,
*vaf->va) >= MAX_MSG_LEN);
),
TP_printk("%s", (char *)__get_dynamic_array(msg))
);
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi_data
TRACE_EVENT(iwlwifi_dev_tx_data,
TP_PROTO(const struct device *dev,
struct sk_buff *skb,
void *data, size_t data_len),
TP_ARGS(dev, skb, data, data_len),
TP_STRUCT__entry(
DEV_ENTRY
__dynamic_array(u8, data, iwl_trace_data(skb) ? data_len : 0)
),
TP_fast_assign(
DEV_ASSIGN;
if (iwl_trace_data(skb))
memcpy(__get_dynamic_array(data), data, data_len);
),
TP_printk("[%s] TX frame data", __get_str(dev))
);
TRACE_EVENT(iwlwifi_dev_rx_data,
TP_PROTO(const struct device *dev,
const struct iwl_trans *trans,
void *rxbuf, size_t len),
TP_ARGS(dev, trans, rxbuf, len),
TP_STRUCT__entry(
DEV_ENTRY
__dynamic_array(u8, data,
len - iwl_rx_trace_len(trans, rxbuf, len))
),
TP_fast_assign(
size_t offs = iwl_rx_trace_len(trans, rxbuf, len);
DEV_ASSIGN;
if (offs < len)
memcpy(__get_dynamic_array(data),
((u8 *)rxbuf) + offs, len - offs);
),
TP_printk("[%s] TX frame data", __get_str(dev))
);
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi
TRACE_EVENT(iwlwifi_dev_hcmd,
TP_PROTO(const struct device *dev,
struct iwl_host_cmd *cmd, u16 total_size,
const void *hdr, size_t hdr_len),
TP_ARGS(dev, cmd, total_size, hdr, hdr_len),
TP_STRUCT__entry(
DEV_ENTRY
__dynamic_array(u8, hcmd, total_size)
__field(u32, flags)
),
TP_fast_assign(
int i, offset = hdr_len;
DEV_ASSIGN;
__entry->flags = cmd->flags;
memcpy(__get_dynamic_array(hcmd), hdr, hdr_len);
for (i = 0; i < IWL_MAX_CMD_TFDS; i++) {
if (!cmd->len[i])
continue;
if (!(cmd->dataflags[i] & IWL_HCMD_DFL_NOCOPY))
continue;
memcpy((u8 *)__get_dynamic_array(hcmd) + offset,
cmd->data[i], cmd->len[i]);
offset += cmd->len[i];
}
),
TP_printk("[%s] hcmd %#.2x (%ssync)",
__get_str(dev), ((u8 *)__get_dynamic_array(hcmd))[0],
__entry->flags & CMD_ASYNC ? "a" : "")
);
TRACE_EVENT(iwlwifi_dev_rx,
TP_PROTO(const struct device *dev, const struct iwl_trans *trans,
void *rxbuf, size_t len),
TP_ARGS(dev, trans, rxbuf, len),
TP_STRUCT__entry(
DEV_ENTRY
__dynamic_array(u8, rxbuf, iwl_rx_trace_len(trans, rxbuf, len))
),
TP_fast_assign(
DEV_ASSIGN;
memcpy(__get_dynamic_array(rxbuf), rxbuf,
iwl_rx_trace_len(trans, rxbuf, len));
),
TP_printk("[%s] RX cmd %#.2x",
__get_str(dev), ((u8 *)__get_dynamic_array(rxbuf))[4])
);
TRACE_EVENT(iwlwifi_dev_tx,
TP_PROTO(const struct device *dev, struct sk_buff *skb,
void *tfd, size_t tfdlen,
void *buf0, size_t buf0_len,
void *buf1, size_t buf1_len),
TP_ARGS(dev, skb, tfd, tfdlen, buf0, buf0_len, buf1, buf1_len),
TP_STRUCT__entry(
DEV_ENTRY
__field(size_t, framelen)
__dynamic_array(u8, tfd, tfdlen)
/*
* Do not insert between or below these items,
* we want to keep the frame together (except
* for the possible padding).
*/
__dynamic_array(u8, buf0, buf0_len)
__dynamic_array(u8, buf1, iwl_trace_data(skb) ? 0 : buf1_len)
),
TP_fast_assign(
DEV_ASSIGN;
__entry->framelen = buf0_len + buf1_len;
memcpy(__get_dynamic_array(tfd), tfd, tfdlen);
memcpy(__get_dynamic_array(buf0), buf0, buf0_len);
if (!iwl_trace_data(skb))
memcpy(__get_dynamic_array(buf1), buf1, buf1_len);
),
TP_printk("[%s] TX %.2x (%zu bytes)",
__get_str(dev), ((u8 *)__get_dynamic_array(buf0))[0],
__entry->framelen)
);
TRACE_EVENT(iwlwifi_dev_ucode_error,
TP_PROTO(const struct device *dev, u32 desc, u32 tsf_low,
u32 data1, u32 data2, u32 line, u32 blink1,
u32 blink2, u32 ilink1, u32 ilink2, u32 bcon_time,
u32 gp1, u32 gp2, u32 gp3, u32 ucode_ver, u32 hw_ver,
u32 brd_ver),
TP_ARGS(dev, desc, tsf_low, data1, data2, line,
blink1, blink2, ilink1, ilink2, bcon_time, gp1, gp2,
gp3, ucode_ver, hw_ver, brd_ver),
TP_STRUCT__entry(
DEV_ENTRY
__field(u32, desc)
__field(u32, tsf_low)
__field(u32, data1)
__field(u32, data2)
__field(u32, line)
__field(u32, blink1)
__field(u32, blink2)
__field(u32, ilink1)
__field(u32, ilink2)
__field(u32, bcon_time)
__field(u32, gp1)
__field(u32, gp2)
__field(u32, gp3)
__field(u32, ucode_ver)
__field(u32, hw_ver)
__field(u32, brd_ver)
),
TP_fast_assign(
DEV_ASSIGN;
__entry->desc = desc;
__entry->tsf_low = tsf_low;
__entry->data1 = data1;
__entry->data2 = data2;
__entry->line = line;
__entry->blink1 = blink1;
__entry->blink2 = blink2;
__entry->ilink1 = ilink1;
__entry->ilink2 = ilink2;
__entry->bcon_time = bcon_time;
__entry->gp1 = gp1;
__entry->gp2 = gp2;
__entry->gp3 = gp3;
__entry->ucode_ver = ucode_ver;
__entry->hw_ver = hw_ver;
__entry->brd_ver = brd_ver;
),
TP_printk("[%s] #%02d %010u data 0x%08X 0x%08X line %u, "
"blink 0x%05X 0x%05X ilink 0x%05X 0x%05X "
"bcon_tm %010u gp 0x%08X 0x%08X 0x%08X uCode 0x%08X "
"hw 0x%08X brd 0x%08X",
__get_str(dev), __entry->desc, __entry->tsf_low,
__entry->data1,
__entry->data2, __entry->line, __entry->blink1,
__entry->blink2, __entry->ilink1, __entry->ilink2,
__entry->bcon_time, __entry->gp1, __entry->gp2,
__entry->gp3, __entry->ucode_ver, __entry->hw_ver,
__entry->brd_ver)
);
TRACE_EVENT(iwlwifi_dev_ucode_event,
TP_PROTO(const struct device *dev, u32 time, u32 data, u32 ev),
TP_ARGS(dev, time, data, ev),
TP_STRUCT__entry(
DEV_ENTRY
__field(u32, time)
__field(u32, data)
__field(u32, ev)
),
TP_fast_assign(
DEV_ASSIGN;
__entry->time = time;
__entry->data = data;
__entry->ev = ev;
),
TP_printk("[%s] EVT_LOGT:%010u:0x%08x:%04u",
__get_str(dev), __entry->time, __entry->data, __entry->ev)
);
#endif /* __IWLWIFI_DEVICE_TRACE */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE iwl-devtrace
#include <trace/define_trace.h>
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