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) 34 static 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 62 static 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, ...) \ 91 static 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, ...) \ 96 static 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 */ 109