[linux-block.git] / drivers / net / wireless / intel / iwlwifi / iwl-devtrace.h

/* SPDX-License-Identifier: GPL-2.0-only */
/******************************************************************************
 *
 * Copyright(c) 2009 - 2014 Intel Corporation. All rights reserved.
 * Copyright(C) 2016        Intel Deutschland GmbH
 * Copyright(c) 2018        Intel Corporation
 *
 * Contact Information:
 *  Intel Linux Wireless <linuxwifi@intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 *****************************************************************************/

#ifndef __IWLWIFI_DEVICE_TRACE
#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;
	__le16 fc = hdr->frame_control;
	int offs = 24; /* start with normal header length */

	if (!ieee80211_is_data(fc))
		return false;

	/* Try to determine if the frame is EAPOL. This might have false
	 * positives (if there's no RFC 1042 header and we compare to some
	 * payload instead) but since we're only doing tracing that's not
	 * a problem.
	 */

	if (ieee80211_has_a4(fc))
		offs += 6;
	if (ieee80211_is_data_qos(fc))
		offs += 2;
	/* don't account for crypto - these are unencrypted */

	/* also account for the RFC 1042 header, of course */
	offs += 6;

	return skb->len <= offs + 2 ||
		*(__be16 *)(skb->data + offs) != cpu_to_be16(ETH_P_PAE);
}

static inline size_t iwl_rx_trace_len(const struct iwl_trans *trans,
				      void *rxbuf, size_t len,
				      size_t *out_hdr_offset)
{
	struct iwl_cmd_header *cmd = (void *)((u8 *)rxbuf + sizeof(__le32));
	struct ieee80211_hdr *hdr = NULL;
	size_t hdr_offset;

	if (cmd->cmd != trans->rx_mpdu_cmd)
		return len;

	hdr_offset = sizeof(struct iwl_cmd_header) +
		     trans->rx_mpdu_cmd_hdr_size;

	if (out_hdr_offset)
		*out_hdr_offset = hdr_offset;

	hdr = (void *)((u8 *)cmd + hdr_offset);
	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>


#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))

#include "iwl-devtrace-io.h"
#include "iwl-devtrace-ucode.h"
#include "iwl-devtrace-msg.h"
#include "iwl-devtrace-data.h"
#include "iwl-devtrace-iwlwifi.h"

#endif /* __IWLWIFI_DEVICE_TRACE */
Commit	Line	Data
4273a380	1	/* SPDX-License-Identifier: GPL-2.0-only */
bb5d2db5 RC	2	/******************************************************************************
bb5d2db5 RC	3	*
51368bf7	4	* Copyright(c) 2009 - 2014 Intel Corporation. All rights reserved.
38bd7e58 MG	5	* Copyright(C) 2016 Intel Deutschland GmbH
38bd7e58 MG	6	* Copyright(c) 2018 Intel Corporation
bb5d2db5	7	*
bb5d2db5	8	* Contact Information:
cb2f8277	9	* Intel Linux Wireless <linuxwifi@intel.com>
bb5d2db5 RC	10	* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
	11	*
	12	*****************************************************************************/
	13
c5ef935d	14	#ifndef __IWLWIFI_DEVICE_TRACE
f042c2eb JB	15	#include <linux/skbuff.h>
	16	#include <linux/ieee80211.h>
	17	#include <net/cfg80211.h>
	18	#include "iwl-trans.h"
	19	#if !defined(__IWLWIFI_DEVICE_TRACE)
	20	static inline bool iwl_trace_data(struct sk_buff *skb)
	21	{
	22	struct ieee80211_hdr hdr = (void )skb->data;
0c4cb731 JB	23	__le16 fc = hdr->frame_control;
0c4cb731 JB	24	int offs = 24; /* start with normal header length */
f042c2eb	25
0c4cb731	26	if (!ieee80211_is_data(fc))
af61a165	27	return false;
0c4cb731 JB	28
	29	/* Try to determine if the frame is EAPOL. This might have false
	30	* positives (if there's no RFC 1042 header and we compare to some
	31	* payload instead) but since we're only doing tracing that's not
	32	* a problem.
	33	*/
	34
	35	if (ieee80211_has_a4(fc))
	36	offs += 6;
	37	if (ieee80211_is_data_qos(fc))
	38	offs += 2;
	39	/* don't account for crypto - these are unencrypted */
	40
	41	/* also account for the RFC 1042 header, of course */
	42	offs += 6;
	43
5462bcd8 EG	44	return skb->len <= offs + 2 \|\|
5462bcd8 EG	45	(__be16 )(skb->data + offs) != cpu_to_be16(ETH_P_PAE);
f042c2eb JB	46	}
	47
	48	static inline size_t iwl_rx_trace_len(const struct iwl_trans *trans,
38bd7e58 MG	49	void *rxbuf, size_t len,
38bd7e58 MG	50	size_t *out_hdr_offset)
f042c2eb JB	51	{
f042c2eb JB	52	struct iwl_cmd_header cmd = (void )((u8 *)rxbuf + sizeof(__le32));
38bd7e58 MG	53	struct ieee80211_hdr *hdr = NULL;
38bd7e58 MG	54	size_t hdr_offset;
f042c2eb JB	55
	56	if (cmd->cmd != trans->rx_mpdu_cmd)
	57	return len;
	58
38bd7e58 MG	59	hdr_offset = sizeof(struct iwl_cmd_header) +
	60	trans->rx_mpdu_cmd_hdr_size;
	61
	62	if (out_hdr_offset)
	63	*out_hdr_offset = hdr_offset;
	64
	65	hdr = (void )((u8 )cmd + hdr_offset);
f042c2eb JB	66	if (!ieee80211_is_data(hdr->frame_control))
	67	return len;
	68	/* maybe try to identify EAPOL frames? */
	69	return sizeof(__le32) + sizeof(*cmd) + trans->rx_mpdu_cmd_hdr_size +
	70	ieee80211_hdrlen(hdr->frame_control);
	71	}
	72	#endif
	73
be1a71a1 JB	74	#define __IWLWIFI_DEVICE_TRACE
	75
	76	#include <linux/tracepoint.h>
1023fdc4	77	#include <linux/device.h>
be1a71a1	78
83ed9015	79
be1a71a1 JB	80	#if !defined(CONFIG_IWLWIFI_DEVICE_TRACING) \|\| defined(__CHECKER__)
	81	#undef TRACE_EVENT
	82	#define TRACE_EVENT(name, proto, ...) \
	83	static inline void trace_ ## name(proto) {}
2655e314 JB	84	#undef DECLARE_EVENT_CLASS
	85	#define DECLARE_EVENT_CLASS(...)
	86	#undef DEFINE_EVENT
	87	#define DEFINE_EVENT(evt_class, name, proto, ...) \
	88	static inline void trace_ ## name(proto) {}
be1a71a1 JB	89	#endif
be1a71a1 JB	90
6c1011e1 JB	91	#define DEV_ENTRY __string(dev, dev_name(dev))
6c1011e1 JB	92	#define DEV_ASSIGN __assign_str(dev, dev_name(dev))
be1a71a1	93
c5ef935d SRRH	94	#include "iwl-devtrace-io.h"
	95	#include "iwl-devtrace-ucode.h"
	96	#include "iwl-devtrace-msg.h"
	97	#include "iwl-devtrace-data.h"
	98	#include "iwl-devtrace-iwlwifi.h"
be1a71a1	99
be1a71a1	100	#endif /* __IWLWIFI_DEVICE_TRACE */