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 */