nl80211: Add TX queue parameter configuration

Add a new attribute, NL80211_ATTR_WIPHY_TXQ_PARAMS, that can be used with
NL80211_CMD_SET_WIPHY for userspace (e.g., hostapd) to set TX queue
parameters (txop, cwmin, cwmax, aifs).

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 442a4d7b1808..fe672faa819d 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1069,6 +1069,30 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
         return 0;
 }
 
+static int ieee80211_set_txq_params(struct wiphy *wiphy,
+                                    struct ieee80211_txq_params *params)
+{
+        struct ieee80211_local *local = wiphy_priv(wiphy);
+        struct ieee80211_tx_queue_params p;
+
+        if (!local->ops->conf_tx)
+                return -EOPNOTSUPP;
+
+        memset(&p, 0, sizeof(p));
+        p.aifs = params->aifs;
+        p.cw_max = params->cwmax;
+        p.cw_min = params->cwmin;
+        p.txop = params->txop;
+        if (local->ops->conf_tx(local_to_hw(local), params->queue, &p)) {
+                printk(KERN_DEBUG "%s: failed to set TX queue "
+                       "parameters for queue %d\n", local->mdev->name,
+                       params->queue);
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
 struct cfg80211_ops mac80211_config_ops = {
         .add_virtual_intf = ieee80211_add_iface,
         .del_virtual_intf = ieee80211_del_iface,
@@ -1095,4 +1119,5 @@ struct cfg80211_ops mac80211_config_ops = {
         .get_mesh_params = ieee80211_get_mesh_params,
 #endif
         .change_bss = ieee80211_change_bss,
+        .set_txq_params = ieee80211_set_txq_params,
 };