| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 Intel Corporation |
| 7 | * |
| 8 | * Contact Information: |
| 9 | * Intel Linux Wireless <linuxwifi@intel.com> |
| 10 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 11 | * |
| 12 | *****************************************************************************/ |
| 13 | |
| 14 | #ifndef __IWLWIFI_DEVICE_TRACE |
| 15 | #include <linux/skbuff.h> |
| 16 | #include <linux/ieee80211.h> |
| 17 | #include <net/cfg80211.h> |
| 18 | #include "iwl-trans.h" |
| 19 | #if !defined(__IWLWIFI_DEVICE_TRACE) |
| 20 | static inline bool iwl_trace_data(struct sk_buff *skb) |
| 21 | { |
| 22 | struct ieee80211_hdr *hdr = (void *)skb->data; |
| 23 | __le16 fc = hdr->frame_control; |
| 24 | int offs = 24; /* start with normal header length */ |
| 25 | |
| 26 | if (!ieee80211_is_data(fc)) |
| 27 | return false; |
| 28 | |
| 29 | /* Try to determine if the frame is EAPOL. This might have false |
| 30 | * positives (if there's no RFC 1042 header and we compare to some |
| 31 | * payload instead) but since we're only doing tracing that's not |
| 32 | * a problem. |
| 33 | */ |
| 34 | |
| 35 | if (ieee80211_has_a4(fc)) |
| 36 | offs += 6; |
| 37 | if (ieee80211_is_data_qos(fc)) |
| 38 | offs += 2; |
| 39 | /* don't account for crypto - these are unencrypted */ |
| 40 | |
| 41 | /* also account for the RFC 1042 header, of course */ |
| 42 | offs += 6; |
| 43 | |
| 44 | return skb->len <= offs + 2 || |
| 45 | *(__be16 *)(skb->data + offs) != cpu_to_be16(ETH_P_PAE); |
| 46 | } |
| 47 | |
| 48 | static inline size_t iwl_rx_trace_len(const struct iwl_trans *trans, |
| 49 | void *rxbuf, size_t len, |
| 50 | size_t *out_hdr_offset) |
| 51 | { |
| 52 | struct iwl_cmd_header *cmd = (void *)((u8 *)rxbuf + sizeof(__le32)); |
| 53 | struct ieee80211_hdr *hdr = NULL; |
| 54 | size_t hdr_offset; |
| 55 | |
| 56 | if (cmd->cmd != trans->rx_mpdu_cmd) |
| 57 | return len; |
| 58 | |
| 59 | hdr_offset = sizeof(struct iwl_cmd_header) + |
| 60 | trans->rx_mpdu_cmd_hdr_size; |
| 61 | |
| 62 | if (out_hdr_offset) |
| 63 | *out_hdr_offset = hdr_offset; |
| 64 | |
| 65 | hdr = (void *)((u8 *)cmd + hdr_offset); |
| 66 | if (!ieee80211_is_data(hdr->frame_control)) |
| 67 | return len; |
| 68 | /* maybe try to identify EAPOL frames? */ |
| 69 | return sizeof(__le32) + sizeof(*cmd) + trans->rx_mpdu_cmd_hdr_size + |
| 70 | ieee80211_hdrlen(hdr->frame_control); |
| 71 | } |
| 72 | #endif |
| 73 | |
| 74 | #define __IWLWIFI_DEVICE_TRACE |
| 75 | |
| 76 | #include <linux/tracepoint.h> |
| 77 | #include <linux/device.h> |
| 78 | |
| 79 | |
| 80 | #if !defined(CONFIG_IWLWIFI_DEVICE_TRACING) || defined(__CHECKER__) |
| 81 | #undef TRACE_EVENT |
| 82 | #define TRACE_EVENT(name, proto, ...) \ |
| 83 | static inline void trace_ ## name(proto) {} |
| 84 | #undef DECLARE_EVENT_CLASS |
| 85 | #define DECLARE_EVENT_CLASS(...) |
| 86 | #undef DEFINE_EVENT |
| 87 | #define DEFINE_EVENT(evt_class, name, proto, ...) \ |
| 88 | static inline void trace_ ## name(proto) {} |
| 89 | #endif |
| 90 | |
| 91 | #define DEV_ENTRY __string(dev, dev_name(dev)) |
| 92 | #define DEV_ASSIGN __assign_str(dev, dev_name(dev)) |
| 93 | |
| 94 | #include "iwl-devtrace-io.h" |
| 95 | #include "iwl-devtrace-ucode.h" |
| 96 | #include "iwl-devtrace-msg.h" |
| 97 | #include "iwl-devtrace-data.h" |
| 98 | #include "iwl-devtrace-iwlwifi.h" |
| 99 | |
| 100 | #endif /* __IWLWIFI_DEVICE_TRACE */ |