/* 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 */
|
