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