/* * Copyright 2003-2005	Devicescape Software, Inc. * Copyright (c) 2006	Jiri Benc <jbenc@suse.cz> * Copyright 2007	Johannes Berg <johannes@sipsolutions.net> * Copyright 2013-2014  Intel Mobile Communications GmbH * Copyright(c) 2016 Intel Deutschland GmbH * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/debugfs.h>#include <linux/ieee80211.h>#include "ieee80211_i.h"#include "debugfs.h"#include "debugfs_sta.h"#include "sta_info.h"#include "driver-ops.h" /* sta attributtes */ #define STA_READ(name, field, format_string)				\static ssize_t sta_ ##name## _read(struct file *file,			\				   char __user *userbuf,		\				   size_t count, loff_t *ppos)		\{									\	struct sta_info *sta = file->private_data;			\	return mac80211_format_buffer(userbuf, count, ppos, 		\				      format_string, sta->field);	\}#define STA_READ_D(name, field) STA_READ(name, field, "%d\n") #define STA_OPS(name)							\static const struct file_operations sta_ ##name## _ops = {		\	.read = sta_##name##_read,					\	.open = simple_open,						\	.llseek = generic_file_llseek,					\} #define STA_OPS_RW(name)						\static const struct file_operations sta_ ##name## _ops = {		\	.read = sta_##name##_read,					\	.write = sta_##name##_write,					\	.open = simple_open,						\	.llseek = generic_file_llseek,					\} #define STA_FILE(name, field, format)					\		STA_READ_##format(name, field)				\		STA_OPS(name) STA_FILE(aid, sta.aid, D); static const char * const sta_flag_names[] = {#define FLAG(F) [WLAN_STA_##F] = #F	FLAG(AUTH),	FLAG(ASSOC),	FLAG(PS_STA),	FLAG(AUTHORIZED),	FLAG(SHORT_PREAMBLE),	FLAG(WDS),	FLAG(CLEAR_PS_FILT),	FLAG(MFP),	FLAG(BLOCK_BA),	FLAG(PS_DRIVER),	FLAG(PSPOLL),	FLAG(TDLS_PEER),	FLAG(TDLS_PEER_AUTH),	FLAG(TDLS_INITIATOR),	FLAG(TDLS_CHAN_SWITCH),	FLAG(TDLS_OFF_CHANNEL),	FLAG(TDLS_WIDER_BW),	FLAG(UAPSD),	FLAG(SP),	FLAG(4ADDR_EVENT),	FLAG(INSERTED),	FLAG(RATE_CONTROL),	FLAG(TOFFSET_KNOWN),	FLAG(MPSP_OWNER),	FLAG(MPSP_RECIPIENT),	FLAG(PS_DELIVER),#undef FLAG}; static ssize_t sta_flags_read(struct file *file, char __user *userbuf,			      size_t count, loff_t *ppos){	char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf;	char *end = buf + sizeof(buf) - 1;	struct sta_info *sta = file->private_data;	unsigned int flg; 	BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS); 	for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) {		if (test_sta_flag(sta, flg))			pos += scnprintf(pos, end - pos, "%s\n",					 sta_flag_names[flg]);	} 	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));}STA_OPS(flags); static ssize_t sta_num_ps_buf_frames_read(struct file *file,					  char __user *userbuf,					  size_t count, loff_t *ppos){	struct sta_info *sta = file->private_data;	char buf[17*IEEE80211_NUM_ACS], *p = buf;	int ac; 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)		p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,			       skb_queue_len(&sta->ps_tx_buf[ac]) +			       skb_queue_len(&sta->tx_filtered[ac]));	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);}STA_OPS(num_ps_buf_frames); static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,				      size_t count, loff_t *ppos){	char buf[15*IEEE80211_NUM_TIDS], *p = buf;	int i;	struct sta_info *sta = file->private_data;	for (i = 0; i < IEEE80211_NUM_TIDS; i++)		p += scnprintf(p, sizeof(buf)+buf-p, "%x ",			       le16_to_cpu(sta->last_seq_ctrl[i]));	p += scnprintf(p, sizeof(buf)+buf-p, "\n");	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);}STA_OPS(last_seq_ctrl); #define AQM_TXQ_ENTRY_LEN 130 static ssize_t sta_aqm_read(struct file *file, char __user *userbuf,			size_t count, loff_t *ppos){	struct sta_info *sta = file->private_data;	struct ieee80211_local *local = sta->local;	size_t bufsz = AQM_TXQ_ENTRY_LEN*(IEEE80211_NUM_TIDS+1);	char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;	struct txq_info *txqi;	ssize_t rv;	int i; 	if (!buf)		return -ENOMEM; 	spin_lock_bh(&local->fq.lock);	rcu_read_lock(); 	p += scnprintf(p,		       bufsz+buf-p,		       "target %uus interval %uus ecn %s\n",		       codel_time_to_us(sta->cparams.target),		       codel_time_to_us(sta->cparams.interval),		       sta->cparams.ecn ? "yes" : "no");	p += scnprintf(p,		       bufsz+buf-p,		       "tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets\n"); 	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {		txqi = to_txq_info(sta->sta.txq[i]);		p += scnprintf(p, bufsz+buf-p,			       "%d %d %u %u %u %u %u %u %u %u %u\n",			       txqi->txq.tid,			       txqi->txq.ac,			       txqi->tin.backlog_bytes,			       txqi->tin.backlog_packets,			       txqi->tin.flows,			       txqi->cstats.drop_count,			       txqi->cstats.ecn_mark,			       txqi->tin.overlimit,			       txqi->tin.collisions,			       txqi->tin.tx_bytes,			       txqi->tin.tx_packets);	} 	rcu_read_unlock();	spin_unlock_bh(&local->fq.lock); 	rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);	kfree(buf);	return rv;}STA_OPS(aqm); static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,					size_t count, loff_t *ppos){	char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;	int i;	struct sta_info *sta = file->private_data;	struct tid_ampdu_rx *tid_rx;	struct tid_ampdu_tx *tid_tx; 	rcu_read_lock(); 	p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",			sta->ampdu_mlme.dialog_token_allocator + 1);	p += scnprintf(p, sizeof(buf) + buf - p,		       "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n"); 	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {		bool tid_rx_valid; 		tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);		tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);		tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid); 		p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);		p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",			       tid_rx_valid);		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",			       tid_rx_valid ?					sta->ampdu_mlme.tid_rx_token[i] : 0);		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",				tid_rx ? tid_rx->ssn : 0); 		p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);		p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",				tid_tx ? tid_tx->dialog_token : 0);		p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",				tid_tx ? skb_queue_len(&tid_tx->pending) : 0);		p += scnprintf(p, sizeof(buf) + buf - p, "\n");	}	rcu_read_unlock(); 	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);} static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,				    size_t count, loff_t *ppos){	char _buf[25] = {}, *buf = _buf;	struct sta_info *sta = file->private_data;	bool start, tx;	unsigned long tid;	char *pos;	int ret, timeout = 5000; 	if (count > sizeof(_buf))		return -EINVAL; 	if (copy_from_user(buf, userbuf, count))		return -EFAULT; 	buf[sizeof(_buf) - 1] = '\0';	pos = buf;	buf = strsep(&pos, " ");	if (!buf)		return -EINVAL; 	if (!strcmp(buf, "tx"))		tx = true;	else if (!strcmp(buf, "rx"))		tx = false;	else		return -EINVAL; 	buf = strsep(&pos, " ");	if (!buf)		return -EINVAL;	if (!strcmp(buf, "start")) {		start = true;		if (!tx)			return -EINVAL;	} else if (!strcmp(buf, "stop")) {		start = false;	} else {		return -EINVAL;	} 	buf = strsep(&pos, " ");	if (!buf)		return -EINVAL;	if (sscanf(buf, "timeout=%d", &timeout) == 1) {		buf = strsep(&pos, " ");		if (!buf || !tx || !start)			return -EINVAL;	} 	ret = kstrtoul(buf, 0, &tid);	if (ret || tid >= IEEE80211_NUM_TIDS)		return -EINVAL; 	if (tx) {		if (start)			ret = ieee80211_start_tx_ba_session(&sta->sta, tid,							    timeout);		else			ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);	} else {		__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,					       3, true);		ret = 0;	} 	return ret ?: count;}STA_OPS_RW(agg_status); static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,				size_t count, loff_t *ppos){#define PRINT_HT_CAP(_cond, _str) \	do { \	if (_cond) \			p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \	} while (0)	char buf[512], *p = buf;	int i;	struct sta_info *sta = file->private_data;	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap; 	p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",			htc->ht_supported ? "" : "not ");	if (htc->ht_supported) {		p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap); 		PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");		PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");		PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20"); 		PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");		PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");		PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled"); 		PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");		PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");		PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");		PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC"); 		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");		PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams"); 		PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack"); 		PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "			     "3839 bytes");		PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "			     "7935 bytes"); 		/*		 * For beacons and probe response this would mean the BSS		 * does or does not allow the usage of DSSS/CCK HT40.		 * Otherwise it means the STA does or does not use		 * DSSS/CCK HT40.		 */		PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");		PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40"); 		/* BIT(13) is reserved */ 		PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant"); 		PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection"); 		p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",				htc->ampdu_factor, htc->ampdu_density);		p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:"); 		for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)			p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",					htc->mcs.rx_mask[i]);		p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 		/* If not set this is meaningless */		if (le16_to_cpu(htc->mcs.rx_highest)) {			p += scnprintf(p, sizeof(buf)+buf-p,				       "MCS rx highest: %d Mbps\n",				       le16_to_cpu(htc->mcs.rx_highest));		} 		p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",				htc->mcs.tx_params);	} 	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);}STA_OPS(ht_capa); static ssize_t sta_vht_capa_read(struct file *file, char __user *userbuf,				 size_t count, loff_t *ppos){	char buf[512], *p = buf;	struct sta_info *sta = file->private_data;	struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap; 	p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",			vhtc->vht_supported ? "" : "not ");	if (vhtc->vht_supported) {		p += scnprintf(p, sizeof(buf) + buf - p, "cap: %#.8x\n",			       vhtc->cap);#define PFLAG(a, b)							\		do {							\			if (vhtc->cap & IEEE80211_VHT_CAP_ ## a)	\				p += scnprintf(p, sizeof(buf) + buf - p, \					       "\t\t%s\n", b);		\		} while (0) 		switch (vhtc->cap & 0x3) {		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:			p += scnprintf(p, sizeof(buf) + buf - p,				       "\t\tMAX-MPDU-3895\n");			break;		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:			p += scnprintf(p, sizeof(buf) + buf - p,				       "\t\tMAX-MPDU-7991\n");			break;		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:			p += scnprintf(p, sizeof(buf) + buf - p,				       "\t\tMAX-MPDU-11454\n");			break;		default:			p += scnprintf(p, sizeof(buf) + buf - p,				       "\t\tMAX-MPDU-UNKNOWN\n");		};		switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {		case 0:			p += scnprintf(p, sizeof(buf) + buf - p,				       "\t\t80Mhz\n");			break;		case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:			p += scnprintf(p, sizeof(buf) + buf - p,				       "\t\t160Mhz\n");			break;		case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:			p += scnprintf(p, sizeof(buf) + buf - p,				       "\t\t80+80Mhz\n");			break;		default:			p += scnprintf(p, sizeof(buf) + buf - p,				       "\t\tUNKNOWN-MHZ: 0x%x\n",				       (vhtc->cap >> 2) & 0x3);		};		PFLAG(RXLDPC, "RXLDPC");		PFLAG(SHORT_GI_80, "SHORT-GI-80");		PFLAG(SHORT_GI_160, "SHORT-GI-160");		PFLAG(TXSTBC, "TXSTBC");		p += scnprintf(p, sizeof(buf) + buf - p,			       "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);		PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");		PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");		p += scnprintf(p, sizeof(buf) + buf - p,			"\t\tBEAMFORMEE-STS: 0x%x\n",			(vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>			IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);		p += scnprintf(p, sizeof(buf) + buf - p,			"\t\tSOUNDING-DIMENSIONS: 0x%x\n",			(vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)			>> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);		PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");		PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");		PFLAG(VHT_TXOP_PS, "TXOP-PS");		PFLAG(HTC_VHT, "HTC-VHT");		p += scnprintf(p, sizeof(buf) + buf - p,			"\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",			(vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>			IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);		PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,		      "LINK-ADAPTATION-VHT-UNSOL-MFB");		p += scnprintf(p, sizeof(buf) + buf - p,			"\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",			(vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);		PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");		PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN"); 		p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",			       le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));		if (vhtc->vht_mcs.rx_highest)			p += scnprintf(p, sizeof(buf)+buf-p,				       "MCS RX highest: %d Mbps\n",				       le16_to_cpu(vhtc->vht_mcs.rx_highest));		p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",			       le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));		if (vhtc->vht_mcs.tx_highest)			p += scnprintf(p, sizeof(buf)+buf-p,				       "MCS TX highest: %d Mbps\n",				       le16_to_cpu(vhtc->vht_mcs.tx_highest));	} 	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);}STA_OPS(vht_capa);  #define DEBUGFS_ADD(name) \	debugfs_create_file(#name, 0400, \		sta->debugfs_dir, sta, &sta_ ##name## _ops); #define DEBUGFS_ADD_COUNTER(name, field)				\	if (sizeof(sta->field) == sizeof(u32))				\		debugfs_create_u32(#name, 0400, sta->debugfs_dir,	\			(u32 *) &sta->field);				\

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