Initial import of modified Linux 2.6.28 tree

Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y

1 files changed, 313 insertions, 0 deletions

diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
new file mode 100644
index 0000000..24ce544
--- /dev/null
+++ b/net/mac80211/debugfs.c
@@ -0,0 +1,313 @@
+/*
+ * mac80211 debugfs for wireless PHYs
+ *
+ * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPLv2
+ *
+ */
+
+#include <linux/debugfs.h>
+#include <linux/rtnetlink.h>
+#include "ieee80211_i.h"
+#include "rate.h"
+#include "debugfs.h"
+
+int mac80211_open_file_generic(struct inode *inode, struct file *file)
+{
+	file->private_data = inode->i_private;
+	return 0;
+}
+
+#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...)		\
+static ssize_t name## _read(struct file *file, char __user *userbuf,	\
+			    size_t count, loff_t *ppos)			\
+{									\
+	struct ieee80211_local *local = file->private_data;		\
+	char buf[buflen];						\
+	int res;							\
+									\
+	res = scnprintf(buf, buflen, fmt "\n", ##value);		\
+	return simple_read_from_buffer(userbuf, count, ppos, buf, res);	\
+}									\
+									\
+static const struct file_operations name## _ops = {			\
+	.read = name## _read,						\
+	.open = mac80211_open_file_generic,				\
+};
+
+#define DEBUGFS_ADD(name)						\
+	local->debugfs.name = debugfs_create_file(#name, 0400, phyd,	\
+						  local, &name## _ops);
+
+#define DEBUGFS_DEL(name)						\
+	debugfs_remove(local->debugfs.name);				\
+	local->debugfs.name = NULL;
+
+
+DEBUGFS_READONLY_FILE(frequency, 20, "%d",
+		      local->hw.conf.channel->center_freq);
+DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d",
+		      local->hw.conf.antenna_sel_tx);
+DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d",
+		      local->hw.conf.antenna_sel_rx);
+DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
+		      local->rts_threshold);
+DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
+		      local->fragmentation_threshold);
+DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
+		      local->short_retry_limit);
+DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
+		      local->long_retry_limit);
+DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
+		      local->total_ps_buffered);
+DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x",
+		      local->wep_iv & 0xffffff);
+DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
+		      local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>");
+
+/* statistics stuff */
+
+#define DEBUGFS_STATS_FILE(name, buflen, fmt, value...)			\
+	DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
+
+static ssize_t format_devstat_counter(struct ieee80211_local *local,
+	char __user *userbuf,
+	size_t count, loff_t *ppos,
+	int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
+			  int buflen))
+{
+	struct ieee80211_low_level_stats stats;
+	char buf[20];
+	int res;
+
+	if (!local->ops->get_stats)
+		return -EOPNOTSUPP;
+
+	rtnl_lock();
+	res = local->ops->get_stats(local_to_hw(local), &stats);
+	rtnl_unlock();
+	if (!res)
+		res = printvalue(&stats, buf, sizeof(buf));
+	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+}
+
+#define DEBUGFS_DEVSTATS_FILE(name)					\
+static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
+				 char *buf, int buflen)			\
+{									\
+	return scnprintf(buf, buflen, "%u\n", stats->name);		\
+}									\
+static ssize_t stats_ ##name## _read(struct file *file,			\
+				     char __user *userbuf,		\
+				     size_t count, loff_t *ppos)	\
+{									\
+	return format_devstat_counter(file->private_data,		\
+				      userbuf,				\
+				      count,				\
+				      ppos,				\
+				      print_devstats_##name);		\
+}									\
+									\
+static const struct file_operations stats_ ##name## _ops = {		\
+	.read = stats_ ##name## _read,					\
+	.open = mac80211_open_file_generic,				\
+};
+
+#define DEBUGFS_STATS_ADD(name)						\
+	local->debugfs.stats.name = debugfs_create_file(#name, 0400, statsd,\
+		local, &stats_ ##name## _ops);
+
+#define DEBUGFS_STATS_DEL(name)						\
+	debugfs_remove(local->debugfs.stats.name);			\
+	local->debugfs.stats.name = NULL;
+
+DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u",
+		   local->dot11TransmittedFragmentCount);
+DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u",
+		   local->dot11MulticastTransmittedFrameCount);
+DEBUGFS_STATS_FILE(failed_count, 20, "%u",
+		   local->dot11FailedCount);
+DEBUGFS_STATS_FILE(retry_count, 20, "%u",
+		   local->dot11RetryCount);
+DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u",
+		   local->dot11MultipleRetryCount);
+DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u",
+		   local->dot11FrameDuplicateCount);
+DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u",
+		   local->dot11ReceivedFragmentCount);
+DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u",
+		   local->dot11MulticastReceivedFrameCount);
+DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u",
+		   local->dot11TransmittedFrameCount);
+DEBUGFS_STATS_FILE(wep_undecryptable_count, 20, "%u",
+		   local->dot11WEPUndecryptableCount);
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u",
+		   local->tx_handlers_drop);
+DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u",
+		   local->tx_handlers_queued);
+DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u",
+		   local->tx_handlers_drop_unencrypted);
+DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u",
+		   local->tx_handlers_drop_fragment);
+DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u",
+		   local->tx_handlers_drop_wep);
+DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u",
+		   local->tx_handlers_drop_not_assoc);
+DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u",
+		   local->tx_handlers_drop_unauth_port);
+DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u",
+		   local->rx_handlers_drop);
+DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u",
+		   local->rx_handlers_queued);
+DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u",
+		   local->rx_handlers_drop_nullfunc);
+DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u",
+		   local->rx_handlers_drop_defrag);
+DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u",
+		   local->rx_handlers_drop_short);
+DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u",
+		   local->rx_handlers_drop_passive_scan);
+DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u",
+		   local->tx_expand_skb_head);
+DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u",
+		   local->tx_expand_skb_head_cloned);
+DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u",
+		   local->rx_expand_skb_head);
+DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u",
+		   local->rx_expand_skb_head2);
+DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u",
+		   local->rx_handlers_fragments);
+DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u",
+		   local->tx_status_drop);
+
+#endif
+
+DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
+DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
+DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
+DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
+
+
+void debugfs_hw_add(struct ieee80211_local *local)
+{
+	struct dentry *phyd = local->hw.wiphy->debugfsdir;
+	struct dentry *statsd;
+
+	if (!phyd)
+		return;
+
+	local->debugfs.stations = debugfs_create_dir("stations", phyd);
+	local->debugfs.keys = debugfs_create_dir("keys", phyd);
+
+	DEBUGFS_ADD(frequency);
+	DEBUGFS_ADD(antenna_sel_tx);
+	DEBUGFS_ADD(antenna_sel_rx);
+	DEBUGFS_ADD(rts_threshold);
+	DEBUGFS_ADD(fragmentation_threshold);
+	DEBUGFS_ADD(short_retry_limit);
+	DEBUGFS_ADD(long_retry_limit);
+	DEBUGFS_ADD(total_ps_buffered);
+	DEBUGFS_ADD(wep_iv);
+
+	statsd = debugfs_create_dir("statistics", phyd);
+	local->debugfs.statistics = statsd;
+
+	/* if the dir failed, don't put all the other things into the root! */
+	if (!statsd)
+		return;
+
+	DEBUGFS_STATS_ADD(transmitted_fragment_count);
+	DEBUGFS_STATS_ADD(multicast_transmitted_frame_count);
+	DEBUGFS_STATS_ADD(failed_count);
+	DEBUGFS_STATS_ADD(retry_count);
+	DEBUGFS_STATS_ADD(multiple_retry_count);
+	DEBUGFS_STATS_ADD(frame_duplicate_count);
+	DEBUGFS_STATS_ADD(received_fragment_count);
+	DEBUGFS_STATS_ADD(multicast_received_frame_count);
+	DEBUGFS_STATS_ADD(transmitted_frame_count);
+	DEBUGFS_STATS_ADD(wep_undecryptable_count);
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+	DEBUGFS_STATS_ADD(tx_handlers_drop);
+	DEBUGFS_STATS_ADD(tx_handlers_queued);
+	DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted);
+	DEBUGFS_STATS_ADD(tx_handlers_drop_fragment);
+	DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
+	DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
+	DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
+	DEBUGFS_STATS_ADD(rx_handlers_drop);
+	DEBUGFS_STATS_ADD(rx_handlers_queued);
+	DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
+	DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
+	DEBUGFS_STATS_ADD(rx_handlers_drop_short);
+	DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan);
+	DEBUGFS_STATS_ADD(tx_expand_skb_head);
+	DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
+	DEBUGFS_STATS_ADD(rx_expand_skb_head);
+	DEBUGFS_STATS_ADD(rx_expand_skb_head2);
+	DEBUGFS_STATS_ADD(rx_handlers_fragments);
+	DEBUGFS_STATS_ADD(tx_status_drop);
+#endif
+	DEBUGFS_STATS_ADD(dot11ACKFailureCount);
+	DEBUGFS_STATS_ADD(dot11RTSFailureCount);
+	DEBUGFS_STATS_ADD(dot11FCSErrorCount);
+	DEBUGFS_STATS_ADD(dot11RTSSuccessCount);
+}
+
+void debugfs_hw_del(struct ieee80211_local *local)
+{
+	DEBUGFS_DEL(frequency);
+	DEBUGFS_DEL(antenna_sel_tx);
+	DEBUGFS_DEL(antenna_sel_rx);
+	DEBUGFS_DEL(rts_threshold);
+	DEBUGFS_DEL(fragmentation_threshold);
+	DEBUGFS_DEL(short_retry_limit);
+	DEBUGFS_DEL(long_retry_limit);
+	DEBUGFS_DEL(total_ps_buffered);
+	DEBUGFS_DEL(wep_iv);
+
+	DEBUGFS_STATS_DEL(transmitted_fragment_count);
+	DEBUGFS_STATS_DEL(multicast_transmitted_frame_count);
+	DEBUGFS_STATS_DEL(failed_count);
+	DEBUGFS_STATS_DEL(retry_count);
+	DEBUGFS_STATS_DEL(multiple_retry_count);
+	DEBUGFS_STATS_DEL(frame_duplicate_count);
+	DEBUGFS_STATS_DEL(received_fragment_count);
+	DEBUGFS_STATS_DEL(multicast_received_frame_count);
+	DEBUGFS_STATS_DEL(transmitted_frame_count);
+	DEBUGFS_STATS_DEL(wep_undecryptable_count);
+	DEBUGFS_STATS_DEL(num_scans);
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+	DEBUGFS_STATS_DEL(tx_handlers_drop);
+	DEBUGFS_STATS_DEL(tx_handlers_queued);
+	DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted);
+	DEBUGFS_STATS_DEL(tx_handlers_drop_fragment);
+	DEBUGFS_STATS_DEL(tx_handlers_drop_wep);
+	DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc);
+	DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port);
+	DEBUGFS_STATS_DEL(rx_handlers_drop);
+	DEBUGFS_STATS_DEL(rx_handlers_queued);
+	DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc);
+	DEBUGFS_STATS_DEL(rx_handlers_drop_defrag);
+	DEBUGFS_STATS_DEL(rx_handlers_drop_short);
+	DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan);
+	DEBUGFS_STATS_DEL(tx_expand_skb_head);
+	DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned);
+	DEBUGFS_STATS_DEL(rx_expand_skb_head);
+	DEBUGFS_STATS_DEL(rx_expand_skb_head2);
+	DEBUGFS_STATS_DEL(rx_handlers_fragments);
+	DEBUGFS_STATS_DEL(tx_status_drop);
+#endif
+	DEBUGFS_STATS_DEL(dot11ACKFailureCount);
+	DEBUGFS_STATS_DEL(dot11RTSFailureCount);
+	DEBUGFS_STATS_DEL(dot11FCSErrorCount);
+	DEBUGFS_STATS_DEL(dot11RTSSuccessCount);
+
+	debugfs_remove(local->debugfs.statistics);
+	local->debugfs.statistics = NULL;
+	debugfs_remove(local->debugfs.stations);
+	local->debugfs.stations = NULL;
+	debugfs_remove(local->debugfs.keys);
+	local->debugfs.keys = NULL;
+}