mac80211: remove PID rate control

Minstrel has long since proven its worth.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 0 insertions, 228 deletions

diff --git a/net/mac80211/rc80211_pid_debugfs.c b/net/mac80211/rc80211_pid_debugfs.c
deleted file mode 100644
index 6ff134650a84..000000000000
--- a/net/mac80211/rc80211_pid_debugfs.c
+++ /dev/null
@@ -1,228 +0,0 @@
-/*
- * Copyright 2007, Mattias Nissler <mattias.nissler@gmx.de>
- *
- * 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/sched.h>
-#include <linux/spinlock.h>
-#include <linux/poll.h>
-#include <linux/netdevice.h>
-#include <linux/types.h>
-#include <linux/skbuff.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-
-#include <net/mac80211.h>
-#include "rate.h"
-
-#include "rc80211_pid.h"
-
-static void rate_control_pid_event(struct rc_pid_event_buffer *buf,
-				   enum rc_pid_event_type type,
-				   union rc_pid_event_data *data)
-{
-	struct rc_pid_event *ev;
-	unsigned long status;
-
-	spin_lock_irqsave(&buf->lock, status);
-	ev = &(buf->ring[buf->next_entry]);
-	buf->next_entry = (buf->next_entry + 1) % RC_PID_EVENT_RING_SIZE;
-
-	ev->timestamp = jiffies;
-	ev->id = buf->ev_count++;
-	ev->type = type;
-	ev->data = *data;
-
-	spin_unlock_irqrestore(&buf->lock, status);
-
-	wake_up_all(&buf->waitqueue);
-}
-
-void rate_control_pid_event_tx_status(struct rc_pid_event_buffer *buf,
-				      struct ieee80211_tx_info *stat)
-{
-	union rc_pid_event_data evd;
-
-	evd.flags = stat->flags;
-	memcpy(&evd.tx_status, stat, sizeof(struct ieee80211_tx_info));
-	rate_control_pid_event(buf, RC_PID_EVENT_TYPE_TX_STATUS, &evd);
-}
-
-void rate_control_pid_event_rate_change(struct rc_pid_event_buffer *buf,
-					       int index, int rate)
-{
-	union rc_pid_event_data evd;
-
-	evd.index = index;
-	evd.rate = rate;
-	rate_control_pid_event(buf, RC_PID_EVENT_TYPE_RATE_CHANGE, &evd);
-}
-
-void rate_control_pid_event_tx_rate(struct rc_pid_event_buffer *buf,
-					   int index, int rate)
-{
-	union rc_pid_event_data evd;
-
-	evd.index = index;
-	evd.rate = rate;
-	rate_control_pid_event(buf, RC_PID_EVENT_TYPE_TX_RATE, &evd);
-}
-
-void rate_control_pid_event_pf_sample(struct rc_pid_event_buffer *buf,
-					     s32 pf_sample, s32 prop_err,
-					     s32 int_err, s32 der_err)
-{
-	union rc_pid_event_data evd;
-
-	evd.pf_sample = pf_sample;
-	evd.prop_err = prop_err;
-	evd.int_err = int_err;
-	evd.der_err = der_err;
-	rate_control_pid_event(buf, RC_PID_EVENT_TYPE_PF_SAMPLE, &evd);
-}
-
-static int rate_control_pid_events_open(struct inode *inode, struct file *file)
-{
-	struct rc_pid_sta_info *sinfo = inode->i_private;
-	struct rc_pid_event_buffer *events = &sinfo->events;
-	struct rc_pid_events_file_info *file_info;
-	unsigned long status;
-
-	/* Allocate a state struct */
-	file_info = kmalloc(sizeof(*file_info), GFP_KERNEL);
-	if (file_info == NULL)
-		return -ENOMEM;
-
-	spin_lock_irqsave(&events->lock, status);
-
-	file_info->next_entry = events->next_entry;
-	file_info->events = events;
-
-	spin_unlock_irqrestore(&events->lock, status);
-
-	file->private_data = file_info;
-
-	return 0;
-}
-
-static int rate_control_pid_events_release(struct inode *inode,
-					   struct file *file)
-{
-	struct rc_pid_events_file_info *file_info = file->private_data;
-
-	kfree(file_info);
-
-	return 0;
-}
-
-static unsigned int rate_control_pid_events_poll(struct file *file,
-						 poll_table *wait)
-{
-	struct rc_pid_events_file_info *file_info = file->private_data;
-
-	poll_wait(file, &file_info->events->waitqueue, wait);
-
-	return POLLIN | POLLRDNORM;
-}
-
-#define RC_PID_PRINT_BUF_SIZE 64
-
-static ssize_t rate_control_pid_events_read(struct file *file, char __user *buf,
-					    size_t length, loff_t *offset)
-{
-	struct rc_pid_events_file_info *file_info = file->private_data;
-	struct rc_pid_event_buffer *events = file_info->events;
-	struct rc_pid_event *ev;
-	char pb[RC_PID_PRINT_BUF_SIZE];
-	int ret;
-	int p;
-	unsigned long status;
-
-	/* Check if there is something to read. */
-	if (events->next_entry == file_info->next_entry) {
-		if (file->f_flags & O_NONBLOCK)
-			return -EAGAIN;
-
-		/* Wait */
-		ret = wait_event_interruptible(events->waitqueue,
-				events->next_entry != file_info->next_entry);
-
-		if (ret)
-			return ret;
-	}
-
-	/* Write out one event per call. I don't care whether it's a little
-	 * inefficient, this is debugging code anyway. */
-	spin_lock_irqsave(&events->lock, status);
-
-	/* Get an event */
-	ev = &(events->ring[file_info->next_entry]);
-	file_info->next_entry = (file_info->next_entry + 1) %
-				RC_PID_EVENT_RING_SIZE;
-
-	/* Print information about the event. Note that userspace needs to
-	 * provide large enough buffers. */
-	length = length < RC_PID_PRINT_BUF_SIZE ?
-		 length : RC_PID_PRINT_BUF_SIZE;
-	p = scnprintf(pb, length, "%u %lu ", ev->id, ev->timestamp);
-	switch (ev->type) {
-	case RC_PID_EVENT_TYPE_TX_STATUS:
-		p += scnprintf(pb + p, length - p, "tx_status %u %u",
-			       !(ev->data.flags & IEEE80211_TX_STAT_ACK),
-			       ev->data.tx_status.status.rates[0].idx);
-		break;
-	case RC_PID_EVENT_TYPE_RATE_CHANGE:
-		p += scnprintf(pb + p, length - p, "rate_change %d %d",
-			       ev->data.index, ev->data.rate);
-		break;
-	case RC_PID_EVENT_TYPE_TX_RATE:
-		p += scnprintf(pb + p, length - p, "tx_rate %d %d",
-			       ev->data.index, ev->data.rate);
-		break;
-	case RC_PID_EVENT_TYPE_PF_SAMPLE:
-		p += scnprintf(pb + p, length - p,
-			       "pf_sample %d %d %d %d",
-			       ev->data.pf_sample, ev->data.prop_err,
-			       ev->data.int_err, ev->data.der_err);
-		break;
-	}
-	p += scnprintf(pb + p, length - p, "\n");
-
-	spin_unlock_irqrestore(&events->lock, status);
-
-	if (copy_to_user(buf, pb, p))
-		return -EFAULT;
-
-	return p;
-}
-
-#undef RC_PID_PRINT_BUF_SIZE
-
-static const struct file_operations rc_pid_fop_events = {
-	.owner = THIS_MODULE,
-	.read = rate_control_pid_events_read,
-	.poll = rate_control_pid_events_poll,
-	.open = rate_control_pid_events_open,
-	.release = rate_control_pid_events_release,
-	.llseek = noop_llseek,
-};
-
-void rate_control_pid_add_sta_debugfs(void *priv, void *priv_sta,
-					     struct dentry *dir)
-{
-	struct rc_pid_sta_info *spinfo = priv_sta;
-
-	spinfo->events_entry = debugfs_create_file("rc_pid_events", S_IRUGO,
-						   dir, spinfo,
-						   &rc_pid_fop_events);
-}
-
-void rate_control_pid_remove_sta_debugfs(void *priv, void *priv_sta)
-{
-	struct rc_pid_sta_info *spinfo = priv_sta;
-
-	debugfs_remove(spinfo->events_entry);
-}