From: Johannes Berg Date: Thu, 7 Dec 2023 02:50:09 +0000 (+0200) Subject: wifi: iwlwifi: refactor RX tracing X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1261fefa647fc1a57621b0f12cef9c08e819a5dc;p=linux.git wifi: iwlwifi: refactor RX tracing When there's not going to be any data in the data event, we don't need to add it at all (unlike the TX version, it has no data at all.) Also combine the tracing into a separate inline so we only call iwl_rx_trace_len() once, which also simplifies things, and lets us have a single place to later add other checks. Signed-off-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://msgid.link/20231207044813.13325a4848d2.Ic9e7d794fc4aebfe5ac5136b539ee62789f210f3@changeid Signed-off-by: Johannes Berg --- diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-data.h b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-data.h index 347fd95c4e3a5..2c280a2fe3df3 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-data.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-data.h @@ -3,7 +3,7 @@ * * Copyright(c) 2009 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2015 Intel Deutschland GmbH - * Copyright(c) 2018 - 2019 Intel Corporation + * Copyright(c) 2018 - 2019, 2023 Intel Corporation *****************************************************************************/ #if !defined(__IWLWIFI_DEVICE_TRACE_DATA) || defined(TRACE_HEADER_MULTI_READ) @@ -36,20 +36,17 @@ TRACE_EVENT(iwlwifi_dev_tx_tb, TRACE_EVENT(iwlwifi_dev_rx_data, TP_PROTO(const struct device *dev, - const struct iwl_trans *trans, - void *rxbuf, size_t len), - TP_ARGS(dev, trans, rxbuf, len), + void *rxbuf, size_t len, size_t start), + TP_ARGS(dev, rxbuf, len, start), TP_STRUCT__entry( DEV_ENTRY - __dynamic_array(u8, data, - len - iwl_rx_trace_len(trans, rxbuf, len, NULL)) + __dynamic_array(u8, data, len - start) ), TP_fast_assign( - size_t offs = iwl_rx_trace_len(trans, rxbuf, len, NULL); DEV_ASSIGN; - if (offs < len) + if (start < len) memcpy(__get_dynamic_array(data), - ((u8 *)rxbuf) + offs, len - offs); + ((u8 *)rxbuf) + start, len - start); ), TP_printk("[%s] RX frame data", __get_str(dev)) ); diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-iwlwifi.h b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-iwlwifi.h index 46ed723f138a6..e656bf6bc0033 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-iwlwifi.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-iwlwifi.h @@ -4,7 +4,7 @@ * Copyright(c) 2009 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH - * Copyright(c) 2018 Intel Corporation + * Copyright(c) 2018, 2023 Intel Corporation *****************************************************************************/ #if !defined(__IWLWIFI_DEVICE_TRACE_IWLWIFI) || defined(TRACE_HEADER_MULTI_READ) @@ -50,23 +50,20 @@ TRACE_EVENT(iwlwifi_dev_hcmd, ); TRACE_EVENT(iwlwifi_dev_rx, - TP_PROTO(const struct device *dev, const struct iwl_trans *trans, - struct iwl_rx_packet *pkt, size_t len), - TP_ARGS(dev, trans, pkt, len), + TP_PROTO(const struct device *dev, + struct iwl_rx_packet *pkt, size_t len, size_t trace_len, + size_t hdr_offset), + TP_ARGS(dev, pkt, len, trace_len, hdr_offset), TP_STRUCT__entry( DEV_ENTRY __field(u16, cmd) __field(u8, hdr_offset) - __dynamic_array(u8, rxbuf, - iwl_rx_trace_len(trans, pkt, len, NULL)) + __dynamic_array(u8, rxbuf, trace_len) ), TP_fast_assign( - size_t hdr_offset = 0; - DEV_ASSIGN; __entry->cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); - memcpy(__get_dynamic_array(rxbuf), pkt, - iwl_rx_trace_len(trans, pkt, len, &hdr_offset)); + memcpy(__get_dynamic_array(rxbuf), pkt, trace_len); __entry->hdr_offset = hdr_offset; ), TP_printk("[%s] RX cmd %#.2x", diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c index e46639b097f46..7e686297963d6 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c @@ -2,7 +2,7 @@ /****************************************************************************** * * Copyright(c) 2009 - 2014 Intel Corporation. All rights reserved. - * Copyright (C) 2018 Intel Corporation + * Copyright (C) 2018, 2023 Intel Corporation *****************************************************************************/ #include @@ -20,4 +20,17 @@ EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ucode_event); EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ucode_cont_event); EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ucode_wrap_event); -#endif +#else +#include "iwl-devtrace.h" +#endif /* __CHECKER__ */ + +void __trace_iwlwifi_dev_rx(struct iwl_trans *trans, void *pkt, size_t len) +{ + size_t hdr_offset = 0, trace_len; + + trace_len = iwl_rx_trace_len(trans, pkt, len, &hdr_offset); + trace_iwlwifi_dev_rx(trans->dev, pkt, len, trace_len, hdr_offset); + + if (trace_len < len) + trace_iwlwifi_dev_rx_data(trans->dev, pkt, len, trace_len); +} diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.h b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.h index 01fb7b900a6d3..c3e09f4fefeb9 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.h @@ -7,12 +7,12 @@ *****************************************************************************/ #ifndef __IWLWIFI_DEVICE_TRACE +#define __IWLWIFI_DEVICE_TRACE #include #include #include #include #include "iwl-trans.h" -#if !defined(__IWLWIFI_DEVICE_TRACE) static inline bool iwl_trace_data(struct sk_buff *skb) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); @@ -70,9 +70,6 @@ static inline size_t iwl_rx_trace_len(const struct iwl_trans *trans, return sizeof(__le32) + sizeof(*cmd) + trans->rx_mpdu_cmd_hdr_size + ieee80211_hdrlen(hdr->frame_control); } -#endif - -#define __IWLWIFI_DEVICE_TRACE #include #include @@ -98,4 +95,20 @@ static inline void trace_ ## name(proto) {} #include "iwl-devtrace-data.h" #include "iwl-devtrace-iwlwifi.h" +#ifdef CONFIG_IWLWIFI_DEVICE_TRACING +DECLARE_TRACEPOINT(iwlwifi_dev_rx); +DECLARE_TRACEPOINT(iwlwifi_dev_rx_data); +#endif + +void __trace_iwlwifi_dev_rx(struct iwl_trans *trans, void *pkt, size_t len); + +static inline void maybe_trace_iwlwifi_dev_rx(struct iwl_trans *trans, + void *pkt, size_t len) +{ +#ifdef CONFIG_IWLWIFI_DEVICE_TRACING + if (tracepoint_enabled(iwlwifi_dev_rx) || + tracepoint_enabled(iwlwifi_dev_rx_data)) + __trace_iwlwifi_dev_rx(trans, pkt, len); +#endif +} #endif /* __IWLWIFI_DEVICE_TRACE */ diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index 146bc7bd14fbc..ab0c72c55b2db 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -1351,8 +1351,7 @@ static void iwl_pcie_rx_handle_rb(struct iwl_trans *trans, if (len < sizeof(*pkt) || offset > max_len) break; - trace_iwlwifi_dev_rx(trans->dev, trans, pkt, len); - trace_iwlwifi_dev_rx_data(trans->dev, trans, pkt, len); + maybe_trace_iwlwifi_dev_rx(trans, pkt, len); /* Reclaim a command buffer only if this packet is a response * to a (driver-originated) command.