1 files changed, 95 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.h b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.h
new file mode 100644
index 000000000..1455b5783
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.h
@@ -0,0 +1,95 @@
+/* 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
+ *****************************************************************************/
+
+#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 */