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Diffstat (limited to 'net/mac80211/rc80211_simple.c')
-rw-r--r--net/mac80211/rc80211_simple.c82
1 files changed, 37 insertions, 45 deletions
diff --git a/net/mac80211/rc80211_simple.c b/net/mac80211/rc80211_simple.c
index da72737364e..934676d687d 100644
--- a/net/mac80211/rc80211_simple.c
+++ b/net/mac80211/rc80211_simple.c
@@ -13,6 +13,7 @@
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/compiler.h>
+#include <linux/module.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
@@ -23,6 +24,8 @@
/* This is a minimal implementation of TX rate controlling that can be used
* as the default when no improved mechanisms are available. */
+#define RATE_CONTROL_NUM_DOWN 20
+#define RATE_CONTROL_NUM_UP 15
#define RATE_CONTROL_EMERG_DEC 2
#define RATE_CONTROL_INTERVAL (HZ / 20)
@@ -87,26 +90,6 @@ static void rate_control_rate_dec(struct ieee80211_local *local,
}
}
-
-static struct ieee80211_rate *
-rate_control_lowest_rate(struct ieee80211_local *local,
- struct ieee80211_hw_mode *mode)
-{
- int i;
-
- for (i = 0; i < mode->num_rates; i++) {
- struct ieee80211_rate *rate = &mode->rates[i];
-
- if (rate->flags & IEEE80211_RATE_SUPPORTED)
- return rate;
- }
-
- printk(KERN_DEBUG "rate_control_lowest_rate - no supported rates "
- "found\n");
- return &mode->rates[0];
-}
-
-
struct global_rate_control {
int dummy;
};
@@ -216,35 +199,33 @@ static void rate_control_simple_tx_status(void *priv, struct net_device *dev,
}
-static struct ieee80211_rate *
+static void
rate_control_simple_get_rate(void *priv, struct net_device *dev,
+ struct ieee80211_hw_mode *mode,
struct sk_buff *skb,
- struct rate_control_extra *extra)
+ struct rate_selection *sel)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct ieee80211_hw_mode *mode = extra->mode;
+ struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
- int rateidx, nonerp_idx;
+ int rateidx;
u16 fc;
- memset(extra, 0, sizeof(*extra));
+ sta = sta_info_get(local, hdr->addr1);
+ /* Send management frames and broadcast/multicast data using lowest
+ * rate. */
fc = le16_to_cpu(hdr->frame_control);
if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
- (hdr->addr1[0] & 0x01)) {
- /* Send management frames and broadcast/multicast data using
- * lowest rate. */
- /* TODO: this could probably be improved.. */
- return rate_control_lowest_rate(local, mode);
+ is_multicast_ether_addr(hdr->addr1) || !sta) {
+ sel->rate = rate_lowest(local, mode, sta);
+ if (sta)
+ sta_info_put(sta);
+ return;
}
- sta = sta_info_get(local, hdr->addr1);
-
- if (!sta)
- return rate_control_lowest_rate(local, mode);
-
+ /* If a forced rate is in effect, select it. */
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->bss && sdata->bss->force_unicast_rateidx > -1)
sta->txrate = sdata->bss->force_unicast_rateidx;
@@ -255,17 +236,10 @@ rate_control_simple_get_rate(void *priv, struct net_device *dev,
rateidx = mode->num_rates - 1;
sta->last_txrate = rateidx;
- nonerp_idx = rateidx;
- while (nonerp_idx > 0 &&
- ((mode->rates[nonerp_idx].flags & IEEE80211_RATE_ERP) ||
- !(mode->rates[nonerp_idx].flags & IEEE80211_RATE_SUPPORTED) ||
- !(sta->supp_rates & BIT(nonerp_idx))))
- nonerp_idx--;
- extra->nonerp = &mode->rates[nonerp_idx];
sta_info_put(sta);
- return &mode->rates[rateidx];
+ sel->rate = &mode->rates[rateidx];
}
@@ -391,7 +365,7 @@ static void rate_control_simple_remove_sta_debugfs(void *priv, void *priv_sta)
}
#endif
-struct rate_control_ops mac80211_rcsimple = {
+static struct rate_control_ops mac80211_rcsimple = {
.name = "simple",
.tx_status = rate_control_simple_tx_status,
.get_rate = rate_control_simple_get_rate,
@@ -406,3 +380,21 @@ struct rate_control_ops mac80211_rcsimple = {
.remove_sta_debugfs = rate_control_simple_remove_sta_debugfs,
#endif
};
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Simple rate control algorithm");
+
+int __init rc80211_simple_init(void)
+{
+ return ieee80211_rate_control_register(&mac80211_rcsimple);
+}
+
+void __exit rc80211_simple_exit(void)
+{
+ ieee80211_rate_control_unregister(&mac80211_rcsimple);
+}
+
+#ifdef CONFIG_MAC80211_RC_SIMPLE_MODULE
+module_init(rc80211_simple_init);
+module_exit(rc80211_simple_exit);
+#endif