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Commit 4a5eccaa authored by Ben Greear's avatar Ben Greear Committed by Johannes Berg
Browse files

mac80211: Show pending txqlen in debugfs. 



Could be useful for debugging memory consumption issues,
and perhaps power-save as well.

Signed-off-by: default avatarBen Greear <greearb@candelatech.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 11197d00

net/mac80211/debugfs.c

+27 −0
Original line number Diff line number Diff line
@@ -243,6 +243,31 @@ static ssize_t hwflags_read(struct file *file, char __user *user_buf, 
	return rv;

}



static ssize_t misc_read(struct file *file, char __user *user_buf,

			 size_t count, loff_t *ppos)

{

	struct ieee80211_local *local = file->private_data;

	/* Max len of each line is 16 characters, plus 9 for 'pending:\n' */

	size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9;

	char *buf = kzalloc(bufsz, GFP_KERNEL);

	char *pos = buf, *end = buf + bufsz - 1;

	ssize_t rv;

	int i;

	int ln;



	pos += scnprintf(pos, end - pos, "pending:\n");



	for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {

		ln = skb_queue_len(&local->pending[i]);

		pos += scnprintf(pos, end - pos, "[%i] %d\n",

				 i, ln);

	}



	rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));

	kfree(buf);

	return rv;

}



static ssize_t queues_read(struct file *file, char __user *user_buf,

			   size_t count, loff_t *ppos)

{
@@ -263,6 +288,7 @@ static ssize_t queues_read(struct file *file, char __user *user_buf, 


DEBUGFS_READONLY_FILE_OPS(hwflags);

DEBUGFS_READONLY_FILE_OPS(queues);

DEBUGFS_READONLY_FILE_OPS(misc);



/* statistics stuff */
@@ -331,6 +357,7 @@ void debugfs_hw_add(struct ieee80211_local *local) 
	DEBUGFS_ADD(total_ps_buffered);

	DEBUGFS_ADD(wep_iv);

	DEBUGFS_ADD(queues);

	DEBUGFS_ADD(misc);

#ifdef CONFIG_PM

	DEBUGFS_ADD_MODE(reset, 0200);

#endif