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100 lines
2.9 KiB
100 lines
2.9 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/****************************************************************************** |
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* |
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* Copyright(c) 2009 - 2014 Intel Corporation. All rights reserved. |
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* Copyright(C) 2016 Intel Deutschland GmbH |
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* Copyright(c) 2018 Intel Corporation |
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* |
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* Contact Information: |
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* Intel Linux Wireless <[email protected]> |
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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* |
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*****************************************************************************/ |
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#ifndef __IWLWIFI_DEVICE_TRACE |
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#include <linux/skbuff.h> |
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#include <linux/ieee80211.h> |
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#include <net/cfg80211.h> |
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#include "iwl-trans.h" |
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#if !defined(__IWLWIFI_DEVICE_TRACE) |
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static inline bool iwl_trace_data(struct sk_buff *skb) |
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{ |
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struct ieee80211_hdr *hdr = (void *)skb->data; |
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__le16 fc = hdr->frame_control; |
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int offs = 24; /* start with normal header length */ |
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if (!ieee80211_is_data(fc)) |
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return false; |
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/* Try to determine if the frame is EAPOL. This might have false |
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* positives (if there's no RFC 1042 header and we compare to some |
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* payload instead) but since we're only doing tracing that's not |
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* a problem. |
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*/ |
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if (ieee80211_has_a4(fc)) |
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offs += 6; |
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if (ieee80211_is_data_qos(fc)) |
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offs += 2; |
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/* don't account for crypto - these are unencrypted */ |
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/* also account for the RFC 1042 header, of course */ |
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offs += 6; |
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return skb->len <= offs + 2 || |
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*(__be16 *)(skb->data + offs) != cpu_to_be16(ETH_P_PAE); |
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} |
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static inline size_t iwl_rx_trace_len(const struct iwl_trans *trans, |
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void *rxbuf, size_t len, |
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size_t *out_hdr_offset) |
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{ |
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struct iwl_cmd_header *cmd = (void *)((u8 *)rxbuf + sizeof(__le32)); |
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struct ieee80211_hdr *hdr = NULL; |
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size_t hdr_offset; |
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if (cmd->cmd != trans->rx_mpdu_cmd) |
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return len; |
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hdr_offset = sizeof(struct iwl_cmd_header) + |
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trans->rx_mpdu_cmd_hdr_size; |
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if (out_hdr_offset) |
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*out_hdr_offset = hdr_offset; |
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hdr = (void *)((u8 *)cmd + hdr_offset); |
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if (!ieee80211_is_data(hdr->frame_control)) |
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return len; |
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/* maybe try to identify EAPOL frames? */ |
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return sizeof(__le32) + sizeof(*cmd) + trans->rx_mpdu_cmd_hdr_size + |
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ieee80211_hdrlen(hdr->frame_control); |
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} |
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#endif |
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#define __IWLWIFI_DEVICE_TRACE |
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#include <linux/tracepoint.h> |
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#include <linux/device.h> |
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#if !defined(CONFIG_IWLWIFI_DEVICE_TRACING) || defined(__CHECKER__) |
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#undef TRACE_EVENT |
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#define TRACE_EVENT(name, proto, ...) \ |
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static inline void trace_ ## name(proto) {} |
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#undef DECLARE_EVENT_CLASS |
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#define DECLARE_EVENT_CLASS(...) |
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#undef DEFINE_EVENT |
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#define DEFINE_EVENT(evt_class, name, proto, ...) \ |
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static inline void trace_ ## name(proto) {} |
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#endif |
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#define DEV_ENTRY __string(dev, dev_name(dev)) |
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#define DEV_ASSIGN __assign_str(dev, dev_name(dev)) |
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#include "iwl-devtrace-io.h" |
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#include "iwl-devtrace-ucode.h" |
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#include "iwl-devtrace-msg.h" |
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#include "iwl-devtrace-data.h" |
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#include "iwl-devtrace-iwlwifi.h" |
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#endif /* __IWLWIFI_DEVICE_TRACE */
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