1 files changed, 349 insertions, 34 deletions

diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 3fe541e358f3..d02f07368c51 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mac80211 debugfs for wireless PHYs
  *
  * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
  * Copyright 2013-2014  Intel Mobile Communications GmbH
- * Copyright (C) 2018 Intel Corporation
- *
- * GPLv2
- *
+ * Copyright (C) 2018 - 2019, 2021-2025 Intel Corporation
  */
 
 #include <linux/debugfs.h>
@@ -44,9 +42,8 @@ static ssize_t name## _read(struct file *file, char __user *userbuf,	\
 }
 
 #define DEBUGFS_READONLY_FILE_OPS(name)			\
-static const struct file_operations name## _ops = {			\
+static const struct debugfs_short_fops name## _ops = {				\
 	.read = name## _read,						\
-	.open = simple_open,						\
 	.llseek = generic_file_llseek,					\
 };
 
@@ -55,12 +52,14 @@ static const struct file_operations name## _ops = {			\
 	DEBUGFS_READONLY_FILE_OPS(name)
 
 #define DEBUGFS_ADD(name)						\
-	debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
+	debugfs_create_file(#name, 0400, phyd, local, &name## _ops)
 
 #define DEBUGFS_ADD_MODE(name, mode)					\
 	debugfs_create_file(#name, mode, phyd, local, &name## _ops);
 
 
+DEBUGFS_READONLY_FILE(hw_conf, "%x",
+		      local->hw.conf.flags);
 DEBUGFS_READONLY_FILE(user_power, "%d",
 		      local->user_power_level);
 DEBUGFS_READONLY_FILE(power, "%d",
@@ -83,7 +82,6 @@ static ssize_t aqm_read(struct file *file,
 	int len = 0;
 
 	spin_lock_bh(&local->fq.lock);
-	rcu_read_lock();
 
 	len = scnprintf(buf, sizeof(buf),
 			"access name value\n"
@@ -106,7 +104,6 @@ static ssize_t aqm_read(struct file *file,
 			fq->limit,
 			fq->quantum);
 
-	rcu_read_unlock();
 	spin_unlock_bh(&local->fq.lock);
 
 	return simple_read_from_buffer(user_buf, count, ppos,
@@ -120,18 +117,17 @@ static ssize_t aqm_write(struct file *file,
 {
 	struct ieee80211_local *local = file->private_data;
 	char buf[100];
-	size_t len;
 
-	if (count > sizeof(buf))
+	if (count >= sizeof(buf))
 		return -EINVAL;
 
 	if (copy_from_user(buf, user_buf, count))
 		return -EFAULT;
 
-	buf[sizeof(buf) - 1] = '\0';
-	len = strlen(buf);
-	if (len > 0 && buf[len-1] == '\n')
-		buf[len-1] = 0;
+	if (count && buf[count - 1] == '\n')
+		buf[count - 1] = '\0';
+	else
+		buf[count] = '\0';
 
 	if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
 		return count;
@@ -143,10 +139,268 @@ static ssize_t aqm_write(struct file *file,
 	return -EINVAL;
 }
 
-static const struct file_operations aqm_ops = {
+static const struct debugfs_short_fops aqm_ops = {
 	.write = aqm_write,
 	.read = aqm_read,
-	.open = simple_open,
+	.llseek = default_llseek,
+};
+
+static ssize_t airtime_flags_read(struct file *file,
+				  char __user *user_buf,
+				  size_t count, loff_t *ppos)
+{
+	struct ieee80211_local *local = file->private_data;
+	char buf[128] = {}, *pos, *end;
+
+	pos = buf;
+	end = pos + sizeof(buf) - 1;
+
+	if (local->airtime_flags & AIRTIME_USE_TX)
+		pos += scnprintf(pos, end - pos, "AIRTIME_TX\t(%lx)\n",
+				 AIRTIME_USE_TX);
+	if (local->airtime_flags & AIRTIME_USE_RX)
+		pos += scnprintf(pos, end - pos, "AIRTIME_RX\t(%lx)\n",
+				 AIRTIME_USE_RX);
+
+	return simple_read_from_buffer(user_buf, count, ppos, buf,
+				       strlen(buf));
+}
+
+static ssize_t airtime_flags_write(struct file *file,
+				   const char __user *user_buf,
+				   size_t count, loff_t *ppos)
+{
+	struct ieee80211_local *local = file->private_data;
+	char buf[16];
+
+	if (count >= sizeof(buf))
+		return -EINVAL;
+
+	if (copy_from_user(buf, user_buf, count))
+		return -EFAULT;
+
+	if (count && buf[count - 1] == '\n')
+		buf[count - 1] = '\0';
+	else
+		buf[count] = '\0';
+
+	if (kstrtou16(buf, 0, &local->airtime_flags))
+		return -EINVAL;
+
+	return count;
+}
+
+static const struct debugfs_short_fops airtime_flags_ops = {
+	.write = airtime_flags_write,
+	.read = airtime_flags_read,
+	.llseek = default_llseek,
+};
+
+static ssize_t aql_pending_read(struct file *file,
+				char __user *user_buf,
+				size_t count, loff_t *ppos)
+{
+	struct ieee80211_local *local = file->private_data;
+	char buf[400];
+	int len = 0;
+
+	len = scnprintf(buf, sizeof(buf),
+			"AC     AQL pending\n"
+			"VO     %u us\n"
+			"VI     %u us\n"
+			"BE     %u us\n"
+			"BK     %u us\n"
+			"total  %u us\n",
+			atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VO]),
+			atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VI]),
+			atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BE]),
+			atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BK]),
+			atomic_read(&local->aql_total_pending_airtime));
+	return simple_read_from_buffer(user_buf, count, ppos,
+				       buf, len);
+}
+
+static const struct debugfs_short_fops aql_pending_ops = {
+	.read = aql_pending_read,
+	.llseek = default_llseek,
+};
+
+static ssize_t aql_txq_limit_read(struct file *file,
+				  char __user *user_buf,
+				  size_t count,
+				  loff_t *ppos)
+{
+	struct ieee80211_local *local = file->private_data;
+	char buf[400];
+	int len = 0;
+
+	len = scnprintf(buf, sizeof(buf),
+			"AC	AQL limit low	AQL limit high\n"
+			"VO	%u		%u\n"
+			"VI	%u		%u\n"
+			"BE	%u		%u\n"
+			"BK	%u		%u\n",
+			local->aql_txq_limit_low[IEEE80211_AC_VO],
+			local->aql_txq_limit_high[IEEE80211_AC_VO],
+			local->aql_txq_limit_low[IEEE80211_AC_VI],
+			local->aql_txq_limit_high[IEEE80211_AC_VI],
+			local->aql_txq_limit_low[IEEE80211_AC_BE],
+			local->aql_txq_limit_high[IEEE80211_AC_BE],
+			local->aql_txq_limit_low[IEEE80211_AC_BK],
+			local->aql_txq_limit_high[IEEE80211_AC_BK]);
+	return simple_read_from_buffer(user_buf, count, ppos,
+				       buf, len);
+}
+
+static ssize_t aql_txq_limit_write(struct file *file,
+				   const char __user *user_buf,
+				   size_t count,
+				   loff_t *ppos)
+{
+	struct ieee80211_local *local = file->private_data;
+	char buf[100];
+	u32 ac, q_limit_low, q_limit_high, q_limit_low_old, q_limit_high_old;
+	struct sta_info *sta;
+
+	if (count >= sizeof(buf))
+		return -EINVAL;
+
+	if (copy_from_user(buf, user_buf, count))
+		return -EFAULT;
+
+	if (count && buf[count - 1] == '\n')
+		buf[count - 1] = '\0';
+	else
+		buf[count] = '\0';
+
+	if (sscanf(buf, "%u %u %u", &ac, &q_limit_low, &q_limit_high) != 3)
+		return -EINVAL;
+
+	if (ac >= IEEE80211_NUM_ACS)
+		return -EINVAL;
+
+	q_limit_low_old = local->aql_txq_limit_low[ac];
+	q_limit_high_old = local->aql_txq_limit_high[ac];
+
+	guard(wiphy)(local->hw.wiphy);
+
+	local->aql_txq_limit_low[ac] = q_limit_low;
+	local->aql_txq_limit_high[ac] = q_limit_high;
+
+	list_for_each_entry(sta, &local->sta_list, list) {
+		/* If a sta has customized queue limits, keep it */
+		if (sta->airtime[ac].aql_limit_low == q_limit_low_old &&
+		    sta->airtime[ac].aql_limit_high == q_limit_high_old) {
+			sta->airtime[ac].aql_limit_low = q_limit_low;
+			sta->airtime[ac].aql_limit_high = q_limit_high;
+		}
+	}
+
+	return count;
+}
+
+static const struct debugfs_short_fops aql_txq_limit_ops = {
+	.write = aql_txq_limit_write,
+	.read = aql_txq_limit_read,
+	.llseek = default_llseek,
+};
+
+static ssize_t aql_enable_read(struct file *file, char __user *user_buf,
+			       size_t count, loff_t *ppos)
+{
+	char buf[3];
+	int len;
+
+	len = scnprintf(buf, sizeof(buf), "%d\n",
+			!static_key_false(&aql_disable.key));
+
+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t aql_enable_write(struct file *file, const char __user *user_buf,
+				size_t count, loff_t *ppos)
+{
+	bool aql_disabled = static_key_false(&aql_disable.key);
+	char buf[3];
+	size_t len;
+
+	if (count > sizeof(buf))
+		return -EINVAL;
+
+	if (copy_from_user(buf, user_buf, count))
+		return -EFAULT;
+
+	buf[sizeof(buf) - 1] = '\0';
+	len = strlen(buf);
+	if (len > 0 && buf[len - 1] == '\n')
+		buf[len - 1] = 0;
+
+	if (buf[0] == '0' && buf[1] == '\0') {
+		if (!aql_disabled)
+			static_branch_inc(&aql_disable);
+	} else if (buf[0] == '1' && buf[1] == '\0') {
+		if (aql_disabled)
+			static_branch_dec(&aql_disable);
+	} else {
+		return -EINVAL;
+	}
+
+	return count;
+}
+
+static const struct debugfs_short_fops aql_enable_ops = {
+	.write = aql_enable_write,
+	.read = aql_enable_read,
+	.llseek = default_llseek,
+};
+
+static ssize_t force_tx_status_read(struct file *file,
+				    char __user *user_buf,
+				    size_t count,
+				    loff_t *ppos)
+{
+	struct ieee80211_local *local = file->private_data;
+	char buf[3];
+	int len = 0;
+
+	len = scnprintf(buf, sizeof(buf), "%d\n", (int)local->force_tx_status);
+
+	return simple_read_from_buffer(user_buf, count, ppos,
+				       buf, len);
+}
+
+static ssize_t force_tx_status_write(struct file *file,
+				     const char __user *user_buf,
+				     size_t count,
+				     loff_t *ppos)
+{
+	struct ieee80211_local *local = file->private_data;
+	char buf[3];
+
+	if (count >= sizeof(buf))
+		return -EINVAL;
+
+	if (copy_from_user(buf, user_buf, count))
+		return -EFAULT;
+
+	if (count && buf[count - 1] == '\n')
+		buf[count - 1] = '\0';
+	else
+		buf[count] = '\0';
+
+	if (buf[0] == '0' && buf[1] == '\0')
+		local->force_tx_status = 0;
+	else if (buf[0] == '1' && buf[1] == '\0')
+		local->force_tx_status = 1;
+	else
+		return -EINVAL;
+
+	return count;
+}
+
+static const struct debugfs_short_fops force_tx_status_ops = {
+	.write = force_tx_status_write,
+	.read = force_tx_status_read,
 	.llseek = default_llseek,
 };
 
@@ -155,18 +409,24 @@ static ssize_t reset_write(struct file *file, const char __user *user_buf,
 			   size_t count, loff_t *ppos)
 {
 	struct ieee80211_local *local = file->private_data;
+	int ret;
 
 	rtnl_lock();
+	wiphy_lock(local->hw.wiphy);
 	__ieee80211_suspend(&local->hw, NULL);
-	__ieee80211_resume(&local->hw);
+	ret = __ieee80211_resume(&local->hw);
+	wiphy_unlock(local->hw.wiphy);
+
+	if (ret)
+		cfg80211_shutdown_all_interfaces(local->hw.wiphy);
+
 	rtnl_unlock();
 
 	return count;
 }
 
-static const struct file_operations reset_ops = {
+static const struct debugfs_short_fops reset_ops = {
 	.write = reset_write,
-	.open = simple_open,
 	.llseek = noop_llseek,
 };
 #endif
@@ -186,6 +446,7 @@ static const char *hw_flag_names[] = {
 	FLAG(SUPPORTS_DYNAMIC_PS),
 	FLAG(MFP_CAPABLE),
 	FLAG(WANT_MONITOR_VIF),
+	FLAG(NO_VIRTUAL_MONITOR),
 	FLAG(NO_AUTO_VIF),
 	FLAG(SW_CRYPTO_CONTROL),
 	FLAG(SUPPORT_FAST_XMIT),
@@ -213,11 +474,22 @@ static const char *hw_flag_names[] = {
 	FLAG(REPORTS_LOW_ACK),
 	FLAG(SUPPORTS_TX_FRAG),
 	FLAG(SUPPORTS_TDLS_BUFFER_STA),
-	FLAG(DEAUTH_NEED_MGD_TX_PREP),
 	FLAG(DOESNT_SUPPORT_QOS_NDP),
 	FLAG(BUFF_MMPDU_TXQ),
 	FLAG(SUPPORTS_VHT_EXT_NSS_BW),
 	FLAG(STA_MMPDU_TXQ),
+	FLAG(TX_STATUS_NO_AMPDU_LEN),
+	FLAG(SUPPORTS_MULTI_BSSID),
+	FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
+	FLAG(AMPDU_KEYBORDER_SUPPORT),
+	FLAG(SUPPORTS_TX_ENCAP_OFFLOAD),
+	FLAG(SUPPORTS_RX_DECAP_OFFLOAD),
+	FLAG(SUPPORTS_CONC_MON_RX_DECAP),
+	FLAG(DETECTS_COLOR_COLLISION),
+	FLAG(MLO_MCAST_MULTI_LINK_TX),
+	FLAG(DISALLOW_PUNCTURING),
+	FLAG(HANDLES_QUIET_CSA),
+	FLAG(STRICT),
 #undef FLAG
 };
 
@@ -250,6 +522,46 @@ static ssize_t hwflags_read(struct file *file, char __user *user_buf,
 	return rv;
 }
 
+static ssize_t hwflags_write(struct file *file, const char __user *user_buf,
+			     size_t count, loff_t *ppos)
+{
+	struct ieee80211_local *local = file->private_data;
+	char buf[100];
+	int val;
+
+	if (count >= sizeof(buf))
+		return -EINVAL;
+
+	if (copy_from_user(buf, user_buf, count))
+		return -EFAULT;
+
+	if (count && buf[count - 1] == '\n')
+		buf[count - 1] = '\0';
+	else
+		buf[count] = '\0';
+
+	if (sscanf(buf, "strict=%d", &val) == 1) {
+		switch (val) {
+		case 0:
+			ieee80211_hw_set(&local->hw, STRICT);
+			return count;
+		case 1:
+			__clear_bit(IEEE80211_HW_STRICT, local->hw.flags);
+			return count;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return -EINVAL;
+}
+
+static const struct file_operations hwflags_ops = {
+	.open = simple_open,
+	.read = hwflags_read,
+	.write = hwflags_write,
+};
+
 static ssize_t misc_read(struct file *file, char __user *user_buf,
 			 size_t count, loff_t *ppos)
 {
@@ -300,7 +612,6 @@ static ssize_t queues_read(struct file *file, char __user *user_buf,
 	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
 }
 
-DEBUGFS_READONLY_FILE_OPS(hwflags);
 DEBUGFS_READONLY_FILE_OPS(queues);
 DEBUGFS_READONLY_FILE_OPS(misc);
 
@@ -316,9 +627,9 @@ static ssize_t format_devstat_counter(struct ieee80211_local *local,
 	char buf[20];
 	int res;
 
-	rtnl_lock();
+	wiphy_lock(local->hw.wiphy);
 	res = drv_get_stats(local, &stats);
-	rtnl_unlock();
+	wiphy_unlock(local->hw.wiphy);
 	if (res)
 		return res;
 	res = printvalue(&stats, buf, sizeof(buf));
@@ -342,14 +653,15 @@ static ssize_t stats_ ##name## _read(struct file *file,			\
 				      print_devstats_##name);		\
 }									\
 									\
-static const struct file_operations stats_ ##name## _ops = {		\
+static const struct debugfs_short_fops stats_ ##name## _ops = {			\
 	.read = stats_ ##name## _read,					\
-	.open = simple_open,						\
 	.llseek = generic_file_llseek,					\
 };
 
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 #define DEBUGFS_STATS_ADD(name)					\
 	debugfs_create_u32(#name, 0400, statsd, &local->name);
+#endif
 #define DEBUGFS_DEVSTATS_ADD(name)					\
 	debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
 
@@ -376,18 +688,22 @@ void debugfs_hw_add(struct ieee80211_local *local)
 #ifdef CONFIG_PM
 	DEBUGFS_ADD_MODE(reset, 0200);
 #endif
-	DEBUGFS_ADD(hwflags);
+	DEBUGFS_ADD_MODE(hwflags, 0600);
 	DEBUGFS_ADD(user_power);
 	DEBUGFS_ADD(power);
+	DEBUGFS_ADD(hw_conf);
+	DEBUGFS_ADD_MODE(force_tx_status, 0600);
+	DEBUGFS_ADD_MODE(aql_enable, 0600);
+	DEBUGFS_ADD(aql_pending);
+	DEBUGFS_ADD_MODE(aqm, 0600);
 
-	if (local->ops->wake_tx_queue)
-		DEBUGFS_ADD_MODE(aqm, 0600);
+	DEBUGFS_ADD_MODE(airtime_flags, 0600);
 
-	statsd = debugfs_create_dir("statistics", phyd);
+	DEBUGFS_ADD(aql_txq_limit);
+	debugfs_create_u32("aql_threshold", 0600,
+			   phyd, &local->aql_threshold);
 
-	/* if the dir failed, don't put all the other things into the root! */
-	if (!statsd)
-		return;
+	statsd = debugfs_create_dir("statistics", phyd);
 
 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 	DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
@@ -399,7 +715,6 @@ void debugfs_hw_add(struct ieee80211_local *local)
 	DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
 	DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
 	DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
-	DEBUGFS_STATS_ADD(tx_handlers_drop);
 	DEBUGFS_STATS_ADD(tx_handlers_queued);
 	DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
 	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);