1 files changed, 256 insertions, 227 deletions

diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 1f02e599a31..0e963bc1cea 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -15,13 +15,173 @@
 #include "rate.h"
 #include "debugfs.h"
 
-int mac80211_open_file_generic(struct inode *inode, struct file *file)
+#define DEBUGFS_FORMAT_BUFFER_SIZE 100
+
+#define TX_LATENCY_BIN_DELIMTER_C ','
+#define TX_LATENCY_BIN_DELIMTER_S ","
+#define TX_LATENCY_BINS_DISABLED "enable(bins disabled)\n"
+#define TX_LATENCY_DISABLED "disable\n"
+
+
+/*
+ * Display if Tx latency statistics & bins are enabled/disabled
+ */
+static ssize_t sta_tx_latency_stat_read(struct file *file,
+					char __user *userbuf,
+					size_t count, loff_t *ppos)
 {
-	file->private_data = inode->i_private;
-	return 0;
+	struct ieee80211_local *local = file->private_data;
+	struct ieee80211_tx_latency_bin_ranges  *tx_latency;
+	char *buf;
+	int bufsz, i, ret;
+	int pos = 0;
+
+	rcu_read_lock();
+
+	tx_latency = rcu_dereference(local->tx_latency);
+
+	if (tx_latency && tx_latency->n_ranges) {
+		bufsz = tx_latency->n_ranges * 15;
+		buf = kzalloc(bufsz, GFP_ATOMIC);
+		if (!buf)
+			goto err;
+
+		for (i = 0; i < tx_latency->n_ranges; i++)
+			pos += scnprintf(buf + pos, bufsz - pos, "%d,",
+					 tx_latency->ranges[i]);
+		pos += scnprintf(buf + pos, bufsz - pos, "\n");
+	} else if (tx_latency) {
+		bufsz = sizeof(TX_LATENCY_BINS_DISABLED) + 1;
+		buf = kzalloc(bufsz, GFP_ATOMIC);
+		if (!buf)
+			goto err;
+
+		pos += scnprintf(buf + pos, bufsz - pos, "%s\n",
+				 TX_LATENCY_BINS_DISABLED);
+	} else {
+		bufsz = sizeof(TX_LATENCY_DISABLED) + 1;
+		buf = kzalloc(bufsz, GFP_ATOMIC);
+		if (!buf)
+			goto err;
+
+		pos += scnprintf(buf + pos, bufsz - pos, "%s\n",
+				 TX_LATENCY_DISABLED);
+	}
+
+	rcu_read_unlock();
+
+	ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
+	kfree(buf);
+
+	return ret;
+err:
+	rcu_read_unlock();
+	return -ENOMEM;
 }
 
-#define DEBUGFS_FORMAT_BUFFER_SIZE 100
+/*
+ * Receive input from user regarding Tx latency statistics
+ * The input should indicate if Tx latency statistics and bins are
+ * enabled/disabled.
+ * If bins are enabled input should indicate the amount of different bins and
+ * their ranges. Each bin will count how many Tx frames transmitted within the
+ * appropriate latency.
+ * Legal input is:
+ * a) "enable(bins disabled)" - to enable only general statistics
+ * b) "a,b,c,d,...z" - to enable general statistics and bins, where all are
+ * numbers and a < b < c < d.. < z
+ * c) "disable" - disable all statistics
+ * NOTE: must configure Tx latency statistics bins before stations connected.
+ */
+
+static ssize_t sta_tx_latency_stat_write(struct file *file,
+					 const char __user *userbuf,
+					 size_t count, loff_t *ppos)
+{
+	struct ieee80211_local *local = file->private_data;
+	char buf[128] = {};
+	char *bins = buf;
+	char *token;
+	int buf_size, i, alloc_size;
+	int prev_bin = 0;
+	int n_ranges = 0;
+	int ret = count;
+	struct ieee80211_tx_latency_bin_ranges  *tx_latency;
+
+	if (sizeof(buf) <= count)
+		return -EINVAL;
+	buf_size = count;
+	if (copy_from_user(buf, userbuf, buf_size))
+		return -EFAULT;
+
+	mutex_lock(&local->sta_mtx);
+
+	/* cannot change config once we have stations */
+	if (local->num_sta)
+		goto unlock;
+
+	tx_latency =
+		rcu_dereference_protected(local->tx_latency,
+					  lockdep_is_held(&local->sta_mtx));
+
+	/* disable Tx statistics */
+	if (!strcmp(buf, TX_LATENCY_DISABLED)) {
+		if (!tx_latency)
+			goto unlock;
+		RCU_INIT_POINTER(local->tx_latency, NULL);
+		synchronize_rcu();
+		kfree(tx_latency);
+		goto unlock;
+	}
+
+	/* Tx latency already enabled */
+	if (tx_latency)
+		goto unlock;
+
+	if (strcmp(TX_LATENCY_BINS_DISABLED, buf)) {
+		/* check how many bins and between what ranges user requested */
+		token = buf;
+		while (*token != '\0') {
+			if (*token == TX_LATENCY_BIN_DELIMTER_C)
+				n_ranges++;
+			token++;
+		}
+		n_ranges++;
+	}
+
+	alloc_size = sizeof(struct ieee80211_tx_latency_bin_ranges) +
+		     n_ranges * sizeof(u32);
+	tx_latency = kzalloc(alloc_size, GFP_ATOMIC);
+	if (!tx_latency) {
+		ret = -ENOMEM;
+		goto unlock;
+	}
+	tx_latency->n_ranges = n_ranges;
+	for (i = 0; i < n_ranges; i++) { /* setting bin ranges */
+		token = strsep(&bins, TX_LATENCY_BIN_DELIMTER_S);
+		sscanf(token, "%d", &tx_latency->ranges[i]);
+		/* bins values should be in ascending order */
+		if (prev_bin >= tx_latency->ranges[i]) {
+			ret = -EINVAL;
+			kfree(tx_latency);
+			goto unlock;
+		}
+		prev_bin = tx_latency->ranges[i];
+	}
+	rcu_assign_pointer(local->tx_latency, tx_latency);
+
+unlock:
+	mutex_unlock(&local->sta_mtx);
+
+	return ret;
+}
+
+static const struct file_operations stats_tx_latency_ops = {
+	.write = sta_tx_latency_stat_write,
+	.read = sta_tx_latency_stat_read,
+	.open = simple_open,
+	.llseek = generic_file_llseek,
+};
 
 int mac80211_format_buffer(char __user *userbuf, size_t count,
 				  loff_t *ppos, char *fmt, ...)
@@ -37,7 +197,7 @@ int mac80211_format_buffer(char __user *userbuf, size_t count,
 	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 }
 
-#define DEBUGFS_READONLY_FILE(name, fmt, value...)			\
+#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...)			\
 static ssize_t name## _read(struct file *file, char __user *userbuf,	\
 			    size_t count, loff_t *ppos)			\
 {									\
@@ -45,14 +205,19 @@ static ssize_t name## _read(struct file *file, char __user *userbuf,	\
 									\
 	return mac80211_format_buffer(userbuf, count, ppos, 		\
 				      fmt "\n", ##value);		\
-}									\
-									\
+}
+
+#define DEBUGFS_READONLY_FILE_OPS(name)			\
 static const struct file_operations name## _ops = {			\
 	.read = name## _read,						\
-	.open = mac80211_open_file_generic,				\
+	.open = simple_open,						\
 	.llseek = generic_file_llseek,					\
 };
 
+#define DEBUGFS_READONLY_FILE(name, fmt, value...)		\
+	DEBUGFS_READONLY_FILE_FN(name, fmt, value)		\
+	DEBUGFS_READONLY_FILE_OPS(name)
+
 #define DEBUGFS_ADD(name)						\
 	debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
 
@@ -60,8 +225,10 @@ static const struct file_operations name## _ops = {			\
 	debugfs_create_file(#name, mode, phyd, local, &name## _ops);
 
 
-DEBUGFS_READONLY_FILE(frequency, "%d",
-		      local->hw.conf.channel->center_freq);
+DEBUGFS_READONLY_FILE(user_power, "%d",
+		      local->user_power_level);
+DEBUGFS_READONLY_FILE(power, "%d",
+		      local->hw.conf.power_level);
 DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
 		      local->total_ps_buffered);
 DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
@@ -69,64 +236,14 @@ DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
 DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
 	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
 
-static ssize_t tsf_read(struct file *file, char __user *user_buf,
-			     size_t count, loff_t *ppos)
-{
-	struct ieee80211_local *local = file->private_data;
-	u64 tsf;
-
-	tsf = drv_get_tsf(local);
-
-	return mac80211_format_buffer(user_buf, count, ppos, "0x%016llx\n",
-				      (unsigned long long) tsf);
-}
-
-static ssize_t tsf_write(struct file *file,
-                         const char __user *user_buf,
-                         size_t count, loff_t *ppos)
-{
-	struct ieee80211_local *local = file->private_data;
-	unsigned long long tsf;
-	char buf[100];
-	size_t len;
-
-	len = min(count, sizeof(buf) - 1);
-	if (copy_from_user(buf, user_buf, len))
-		return -EFAULT;
-	buf[len] = '\0';
-
-	if (strncmp(buf, "reset", 5) == 0) {
-		if (local->ops->reset_tsf) {
-			drv_reset_tsf(local);
-			wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
-		}
-	} else {
-		tsf = simple_strtoul(buf, NULL, 0);
-		if (local->ops->set_tsf) {
-			drv_set_tsf(local, tsf);
-			wiphy_info(local->hw.wiphy,
-				   "debugfs set TSF to %#018llx\n", tsf);
-
-		}
-	}
-
-	return count;
-}
-
-static const struct file_operations tsf_ops = {
-	.read = tsf_read,
-	.write = tsf_write,
-	.open = mac80211_open_file_generic,
-	.llseek = default_llseek,
-};
-
+#ifdef CONFIG_PM
 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;
 
 	rtnl_lock();
-	__ieee80211_suspend(&local->hw);
+	__ieee80211_suspend(&local->hw, NULL);
 	__ieee80211_resume(&local->hw);
 	rtnl_unlock();
 
@@ -135,164 +252,80 @@ static ssize_t reset_write(struct file *file, const char __user *user_buf,
 
 static const struct file_operations reset_ops = {
 	.write = reset_write,
-	.open = mac80211_open_file_generic,
+	.open = simple_open,
 	.llseek = noop_llseek,
 };
+#endif
 
-static ssize_t noack_read(struct file *file, char __user *user_buf,
-			  size_t count, loff_t *ppos)
-{
-	struct ieee80211_local *local = file->private_data;
-
-	return mac80211_format_buffer(user_buf, count, ppos, "%d\n",
-				      local->wifi_wme_noack_test);
-}
-
-static ssize_t noack_write(struct file *file,
-			   const char __user *user_buf,
-			   size_t count, loff_t *ppos)
-{
-	struct ieee80211_local *local = file->private_data;
-	char buf[10];
-	size_t len;
-
-	len = min(count, sizeof(buf) - 1);
-	if (copy_from_user(buf, user_buf, len))
-		return -EFAULT;
-	buf[len] = '\0';
-
-	local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);
-
-	return count;
-}
-
-static const struct file_operations noack_ops = {
-	.read = noack_read,
-	.write = noack_write,
-	.open = mac80211_open_file_generic,
-	.llseek = default_llseek,
-};
-
-static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf,
-				 size_t count, loff_t *ppos)
-{
-	struct ieee80211_local *local = file->private_data;
-	return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
-				      local->uapsd_queues);
-}
-
-static ssize_t uapsd_queues_write(struct file *file,
-				  const char __user *user_buf,
-				  size_t count, loff_t *ppos)
-{
-	struct ieee80211_local *local = file->private_data;
-	unsigned long val;
-	char buf[10];
-	size_t len;
-	int ret;
-
-	len = min(count, sizeof(buf) - 1);
-	if (copy_from_user(buf, user_buf, len))
-		return -EFAULT;
-	buf[len] = '\0';
-
-	ret = strict_strtoul(buf, 0, &val);
-
-	if (ret)
-		return -EINVAL;
-
-	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
-		return -ERANGE;
-
-	local->uapsd_queues = val;
-
-	return count;
-}
-
-static const struct file_operations uapsd_queues_ops = {
-	.read = uapsd_queues_read,
-	.write = uapsd_queues_write,
-	.open = mac80211_open_file_generic,
-	.llseek = default_llseek,
-};
-
-static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf,
-				     size_t count, loff_t *ppos)
-{
-	struct ieee80211_local *local = file->private_data;
-
-	return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
-				      local->uapsd_max_sp_len);
-}
-
-static ssize_t uapsd_max_sp_len_write(struct file *file,
-				      const char __user *user_buf,
-				      size_t count, loff_t *ppos)
-{
-	struct ieee80211_local *local = file->private_data;
-	unsigned long val;
-	char buf[10];
-	size_t len;
-	int ret;
-
-	len = min(count, sizeof(buf) - 1);
-	if (copy_from_user(buf, user_buf, len))
-		return -EFAULT;
-	buf[len] = '\0';
-
-	ret = strict_strtoul(buf, 0, &val);
-
-	if (ret)
-		return -EINVAL;
-
-	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
-		return -ERANGE;
-
-	local->uapsd_max_sp_len = val;
-
-	return count;
-}
-
-static const struct file_operations uapsd_max_sp_len_ops = {
-	.read = uapsd_max_sp_len_read,
-	.write = uapsd_max_sp_len_write,
-	.open = mac80211_open_file_generic,
-	.llseek = default_llseek,
-};
-
-static ssize_t channel_type_read(struct file *file, char __user *user_buf,
-		       size_t count, loff_t *ppos)
+static ssize_t hwflags_read(struct file *file, char __user *user_buf,
+			    size_t count, loff_t *ppos)
 {
 	struct ieee80211_local *local = file->private_data;
-	const char *buf;
-
-	switch (local->hw.conf.channel_type) {
-	case NL80211_CHAN_NO_HT:
-		buf = "no ht\n";
-		break;
-	case NL80211_CHAN_HT20:
-		buf = "ht20\n";
-		break;
-	case NL80211_CHAN_HT40MINUS:
-		buf = "ht40-\n";
-		break;
-	case NL80211_CHAN_HT40PLUS:
-		buf = "ht40+\n";
-		break;
-	default:
-		buf = "???";
-		break;
-	}
-
-	return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
+	int mxln = 500;
+	ssize_t rv;
+	char *buf = kzalloc(mxln, GFP_KERNEL);
+	int sf = 0; /* how many written so far */
+
+	if (!buf)
+		return 0;
+
+	sf += scnprintf(buf, mxln - sf, "0x%x\n", local->hw.flags);
+	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
+		sf += scnprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n");
+	if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
+		sf += scnprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS\n");
+	if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING)
+		sf += scnprintf(buf + sf, mxln - sf,
+				"HOST_BCAST_PS_BUFFERING\n");
+	if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)
+		sf += scnprintf(buf + sf, mxln - sf,
+				"2GHZ_SHORT_SLOT_INCAPABLE\n");
+	if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)
+		sf += scnprintf(buf + sf, mxln - sf,
+				"2GHZ_SHORT_PREAMBLE_INCAPABLE\n");
+	if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
+		sf += scnprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n");
+	if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
+		sf += scnprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n");
+	if (local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC)
+		sf += scnprintf(buf + sf, mxln - sf,
+				"NEED_DTIM_BEFORE_ASSOC\n");
+	if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)
+		sf += scnprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n");
+	if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)
+		sf += scnprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION\n");
+	if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS)
+		sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_PS\n");
+	if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
+		sf += scnprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK\n");
+	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
+		sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n");
+	if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE)
+		sf += scnprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n");
+	if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS)
+		sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS\n");
+	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
+		sf += scnprintf(buf + sf, mxln - sf,
+				"SUPPORTS_DYNAMIC_SMPS\n");
+	if (local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
+		sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_UAPSD\n");
+	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+		sf += scnprintf(buf + sf, mxln - sf,
+				"REPORTS_TX_ACK_STATUS\n");
+	if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
+		sf += scnprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n");
+	if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)
+		sf += scnprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n");
+	if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
+		sf += scnprintf(buf + sf, mxln - sf, "AP_LINK_PS\n");
+	if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW)
+		sf += scnprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n");
+
+	rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
+	kfree(buf);
+	return rv;
 }
 
-static const struct file_operations channel_type_ops = {
-	.read = channel_type_read,
-	.open = mac80211_open_file_generic,
-	.llseek = default_llseek,
-};
-
 static ssize_t queues_read(struct file *file, char __user *user_buf,
 			   size_t count, loff_t *ppos)
 {
@@ -311,11 +344,8 @@ static ssize_t queues_read(struct file *file, char __user *user_buf,
 	return simple_read_from_buffer(user_buf, count, ppos, buf, res);
 }
 
-static const struct file_operations queues_ops = {
-	.read = queues_read,
-	.open = mac80211_open_file_generic,
-	.llseek = default_llseek,
-};
+DEBUGFS_READONLY_FILE_OPS(hwflags);
+DEBUGFS_READONLY_FILE_OPS(queues);
 
 /* statistics stuff */
 
@@ -357,7 +387,7 @@ static ssize_t stats_ ##name## _read(struct file *file,			\
 									\
 static const struct file_operations stats_ ##name## _ops = {		\
 	.read = stats_ ##name## _read,					\
-	.open = mac80211_open_file_generic,				\
+	.open = simple_open,						\
 	.llseek = generic_file_llseek,					\
 };
 
@@ -381,16 +411,15 @@ void debugfs_hw_add(struct ieee80211_local *local)
 
 	local->debugfs.keys = debugfs_create_dir("keys", phyd);
 
-	DEBUGFS_ADD(frequency);
 	DEBUGFS_ADD(total_ps_buffered);
 	DEBUGFS_ADD(wep_iv);
-	DEBUGFS_ADD(tsf);
 	DEBUGFS_ADD(queues);
+#ifdef CONFIG_PM
 	DEBUGFS_ADD_MODE(reset, 0200);
-	DEBUGFS_ADD(noack);
-	DEBUGFS_ADD(uapsd_queues);
-	DEBUGFS_ADD(uapsd_max_sp_len);
-	DEBUGFS_ADD(channel_type);
+#endif
+	DEBUGFS_ADD(hwflags);
+	DEBUGFS_ADD(user_power);
+	DEBUGFS_ADD(power);
 
 	statsd = debugfs_create_dir("statistics", phyd);
 
@@ -435,8 +464,6 @@ void debugfs_hw_add(struct ieee80211_local *local)
 		local->rx_handlers_drop_defrag);
 	DEBUGFS_STATS_ADD(rx_handlers_drop_short,
 		local->rx_handlers_drop_short);
-	DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
-		local->rx_handlers_drop_passive_scan);
 	DEBUGFS_STATS_ADD(tx_expand_skb_head,
 		local->tx_expand_skb_head);
 	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
@@ -454,4 +481,6 @@ void debugfs_hw_add(struct ieee80211_local *local)
 	DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
 	DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
 	DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
+
+	DEBUGFS_DEVSTATS_ADD(tx_latency);
 }