#include <linux/rtnetlink.h>
#include "rate.h"
#include "ieee80211_i.h"
+#include "debugfs.h"
struct rate_control_alg {
struct list_head list;
module_put(ops->module);
}
+#ifdef CONFIG_MAC80211_DEBUGFS
+static ssize_t rcname_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct rate_control_ref *ref = file->private_data;
+ int len = strlen(ref->ops->name);
+
+ return simple_read_from_buffer(userbuf, count, ppos,
+ ref->ops->name, len);
+}
+
+static const struct file_operations rcname_ops = {
+ .read = rcname_read,
+ .open = mac80211_open_file_generic,
+};
+#endif
+
struct rate_control_ref *rate_control_alloc(const char *name,
struct ieee80211_local *local)
{
+ struct dentry *debugfsdir = NULL;
struct rate_control_ref *ref;
ref = kmalloc(sizeof(struct rate_control_ref), GFP_KERNEL);
if (!ref)
goto fail_ref;
kref_init(&ref->kref);
+ ref->local = local;
ref->ops = ieee80211_rate_control_ops_get(name);
if (!ref->ops)
goto fail_ops;
- ref->priv = ref->ops->alloc(local);
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ debugfsdir = debugfs_create_dir("rc", local->hw.wiphy->debugfsdir);
+ local->debugfs.rcdir = debugfsdir;
+ local->debugfs.rcname = debugfs_create_file("name", 0400, debugfsdir,
+ ref, &rcname_ops);
+#endif
+
+ ref->priv = ref->ops->alloc(&local->hw, debugfsdir);
if (!ref->priv)
goto fail_priv;
return ref;
ctrl_ref = container_of(kref, struct rate_control_ref, kref);
ctrl_ref->ops->free(ctrl_ref->priv);
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ debugfs_remove(ctrl_ref->local->debugfs.rcname);
+ ctrl_ref->local->debugfs.rcname = NULL;
+ debugfs_remove(ctrl_ref->local->debugfs.rcdir);
+ ctrl_ref->local->debugfs.rcdir = NULL;
+#endif
+
ieee80211_rate_control_ops_put(ctrl_ref->ops);
kfree(ctrl_ref);
}
-void rate_control_get_rate(struct net_device *dev,
- struct ieee80211_supported_band *sband,
- struct sk_buff *skb,
- struct rate_selection *sel)
+void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta,
+ struct ieee80211_tx_rate_control *txrc)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct rate_control_ref *ref = local->rate_ctrl;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct sta_info *sta;
+ struct rate_control_ref *ref = sdata->local->rate_ctrl;
+ void *priv_sta = NULL;
+ struct ieee80211_sta *ista = NULL;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb);
int i;
- rcu_read_lock();
- sta = sta_info_get(local, hdr->addr1);
-
- sel->rate_idx = -1;
- sel->nonerp_idx = -1;
- sel->probe_idx = -1;
-
- ref->ops->get_rate(ref->priv, dev, sband, skb, sel);
-
- BUG_ON(sel->rate_idx < 0);
+ if (sta) {
+ ista = &sta->sta;
+ priv_sta = sta->rate_ctrl_priv;
+ }
- /* Select a non-ERP backup rate. */
- if (sel->nonerp_idx < 0) {
- for (i = 0; i < sband->n_bitrates; i++) {
- struct ieee80211_rate *rate = &sband->bitrates[i];
- if (sband->bitrates[sel->rate_idx].bitrate < rate->bitrate)
- break;
+ for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
+ info->control.rates[i].idx = -1;
+ info->control.rates[i].flags = 0;
+ info->control.rates[i].count = 1;
+ }
- if (rate_supported(sta, sband->band, i) &&
- !(rate->flags & IEEE80211_RATE_ERP_G))
- sel->nonerp_idx = i;
- }
+ if (sta && sdata->force_unicast_rateidx > -1)
+ info->control.rates[0].idx = sdata->force_unicast_rateidx;
+ else
+ ref->ops->get_rate(ref->priv, ista, priv_sta, txrc);
+
+ /*
+ * try to enforce the maximum rate the user wanted
+ */
+ if (sdata->max_ratectrl_rateidx > -1)
+ for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
+ if (info->control.rates[i].flags & IEEE80211_TX_RC_MCS)
+ continue;
+ info->control.rates[i].idx =
+ min_t(s8, info->control.rates[i].idx,
+ sdata->max_ratectrl_rateidx);
}
- rcu_read_unlock();
+ BUG_ON(info->control.rates[0].idx < 0);
}
struct rate_control_ref *rate_control_get(struct rate_control_ref *ref)