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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, 2023 Intel Corporation
7 *****************************************************************************/
8
9#ifndef __IWLWIFI_DEVICE_TRACE
10#define __IWLWIFI_DEVICE_TRACE
11#include <linux/skbuff.h>
12#include <linux/ieee80211.h>
13#include <net/cfg80211.h>
14#include <net/mac80211.h>
15#include "iwl-trans.h"
16static inline bool iwl_trace_data(struct sk_buff *skb)
17{
18 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
19 struct ieee80211_hdr *hdr = (void *)skb->data;
20 __le16 fc = hdr->frame_control;
21 int offs = 24; /* start with normal header length */
22
23 if (!ieee80211_is_data(fc))
24 return false;
25
26 /* If upper layers wanted TX status it's an important frame */
27 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
28 return false;
29
30 /* Try to determine if the frame is EAPOL. This might have false
31 * positives (if there's no RFC 1042 header and we compare to some
32 * payload instead) but since we're only doing tracing that's not
33 * a problem.
34 */
35
36 if (ieee80211_has_a4(fc))
37 offs += 6;
38 if (ieee80211_is_data_qos(fc))
39 offs += 2;
40 /* don't account for crypto - these are unencrypted */
41
42 /* also account for the RFC 1042 header, of course */
43 offs += 6;
44
45 return skb->len <= offs + 2 ||
46 *(__be16 *)(skb->data + offs) != cpu_to_be16(ETH_P_PAE);
47}
48
49static inline size_t iwl_rx_trace_len(const struct iwl_trans *trans,
50 void *rxbuf, size_t len,
51 size_t *out_hdr_offset)
52{
53 struct iwl_cmd_header *cmd = (void *)((u8 *)rxbuf + sizeof(__le32));
54 struct ieee80211_hdr *hdr = NULL;
55 size_t hdr_offset;
56
57 if (cmd->cmd != trans->rx_mpdu_cmd)
58 return len;
59
60 hdr_offset = sizeof(struct iwl_cmd_header) +
61 trans->rx_mpdu_cmd_hdr_size;
62
63 if (out_hdr_offset)
64 *out_hdr_offset = hdr_offset;
65
66 hdr = (void *)((u8 *)cmd + hdr_offset);
67 if (!ieee80211_is_data(hdr->frame_control))
68 return len;
69 /* maybe try to identify EAPOL frames? */
70 return sizeof(__le32) + sizeof(*cmd) + trans->rx_mpdu_cmd_hdr_size +
71 ieee80211_hdrlen(hdr->frame_control);
72}
73
74#include <linux/tracepoint.h>
75#include <linux/device.h>
76
77
78#if !defined(CONFIG_IWLWIFI_DEVICE_TRACING) || defined(__CHECKER__)
79#undef TRACE_EVENT
80#define TRACE_EVENT(name, proto, ...) \
81static inline void trace_ ## name(proto) {}
82#undef DECLARE_EVENT_CLASS
83#define DECLARE_EVENT_CLASS(...)
84#undef DEFINE_EVENT
85#define DEFINE_EVENT(evt_class, name, proto, ...) \
86static inline void trace_ ## name(proto) {}
87#endif
88
89#define DEV_ENTRY __string(dev, dev_name(dev))
90#define DEV_ASSIGN __assign_str(dev, dev_name(dev))
91
92#include "iwl-devtrace-io.h"
93#include "iwl-devtrace-ucode.h"
94#include "iwl-devtrace-msg.h"
95#include "iwl-devtrace-data.h"
96#include "iwl-devtrace-iwlwifi.h"
97
98#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
99DECLARE_TRACEPOINT(iwlwifi_dev_rx);
100DECLARE_TRACEPOINT(iwlwifi_dev_rx_data);
101#endif
102
103void __trace_iwlwifi_dev_rx(struct iwl_trans *trans, void *pkt, size_t len);
104
105static inline void maybe_trace_iwlwifi_dev_rx(struct iwl_trans *trans,
106 void *pkt, size_t len)
107{
108#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
109 if (tracepoint_enabled(iwlwifi_dev_rx) ||
110 tracepoint_enabled(iwlwifi_dev_rx_data))
111 __trace_iwlwifi_dev_rx(trans, pkt, len);
112#endif
113}
114#endif /* __IWLWIFI_DEVICE_TRACE */
1/******************************************************************************
2 *
3 * Copyright(c) 2009 - 2014 Intel Corporation. All rights reserved.
4 * Copyright(C) 2016 Intel Deutschland GmbH
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of version 2 of the GNU General Public License as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
18 *
19 * The full GNU General Public License is included in this distribution in the
20 * file called LICENSE.
21 *
22 * Contact Information:
23 * Intel Linux Wireless <linuxwifi@intel.com>
24 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *
26 *****************************************************************************/
27
28#ifndef __IWLWIFI_DEVICE_TRACE
29#include <linux/skbuff.h>
30#include <linux/ieee80211.h>
31#include <net/cfg80211.h>
32#include "iwl-trans.h"
33#if !defined(__IWLWIFI_DEVICE_TRACE)
34static inline bool iwl_trace_data(struct sk_buff *skb)
35{
36 struct ieee80211_hdr *hdr = (void *)skb->data;
37 __le16 fc = hdr->frame_control;
38 int offs = 24; /* start with normal header length */
39
40 if (!ieee80211_is_data(fc))
41 return false;
42
43 /* Try to determine if the frame is EAPOL. This might have false
44 * positives (if there's no RFC 1042 header and we compare to some
45 * payload instead) but since we're only doing tracing that's not
46 * a problem.
47 */
48
49 if (ieee80211_has_a4(fc))
50 offs += 6;
51 if (ieee80211_is_data_qos(fc))
52 offs += 2;
53 /* don't account for crypto - these are unencrypted */
54
55 /* also account for the RFC 1042 header, of course */
56 offs += 6;
57
58 return skb->len <= offs + 2 ||
59 *(__be16 *)(skb->data + offs) != cpu_to_be16(ETH_P_PAE);
60}
61
62static inline size_t iwl_rx_trace_len(const struct iwl_trans *trans,
63 void *rxbuf, size_t len)
64{
65 struct iwl_cmd_header *cmd = (void *)((u8 *)rxbuf + sizeof(__le32));
66 struct ieee80211_hdr *hdr;
67
68 if (cmd->cmd != trans->rx_mpdu_cmd)
69 return len;
70
71 hdr = (void *)((u8 *)cmd + sizeof(struct iwl_cmd_header) +
72 trans->rx_mpdu_cmd_hdr_size);
73 if (!ieee80211_is_data(hdr->frame_control))
74 return len;
75 /* maybe try to identify EAPOL frames? */
76 return sizeof(__le32) + sizeof(*cmd) + trans->rx_mpdu_cmd_hdr_size +
77 ieee80211_hdrlen(hdr->frame_control);
78}
79#endif
80
81#define __IWLWIFI_DEVICE_TRACE
82
83#include <linux/tracepoint.h>
84#include <linux/device.h>
85#include "iwl-trans.h"
86
87
88#if !defined(CONFIG_IWLWIFI_DEVICE_TRACING) || defined(__CHECKER__)
89#undef TRACE_EVENT
90#define TRACE_EVENT(name, proto, ...) \
91static inline void trace_ ## name(proto) {}
92#undef DECLARE_EVENT_CLASS
93#define DECLARE_EVENT_CLASS(...)
94#undef DEFINE_EVENT
95#define DEFINE_EVENT(evt_class, name, proto, ...) \
96static inline void trace_ ## name(proto) {}
97#endif
98
99#define DEV_ENTRY __string(dev, dev_name(dev))
100#define DEV_ASSIGN __assign_str(dev, dev_name(dev))
101
102#include "iwl-devtrace-io.h"
103#include "iwl-devtrace-ucode.h"
104#include "iwl-devtrace-msg.h"
105#include "iwl-devtrace-data.h"
106#include "iwl-devtrace-iwlwifi.h"
107
108#endif /* __IWLWIFI_DEVICE_TRACE */