cfg80211: implement IWRATE

For now, let's implement that using a very hackish way:
simply mirror the wext API in the cfg80211 API. This
will have to be changed later when we implement proper
bitrate API.

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

1 files changed, 63 insertions, 0 deletions

diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 2f72dae2634f..3a5f999703f1 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -1093,3 +1093,66 @@ int cfg80211_wds_wext_giwap(struct net_device *dev,
         return 0;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wds_wext_giwap);
+
+int cfg80211_wext_siwrate(struct net_device *dev,
+                          struct iw_request_info *info,
+                          struct iw_param *rate, char *extra)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+        struct cfg80211_bitrate_mask mask;
+
+        if (!rdev->ops->set_bitrate_mask)
+                return -EOPNOTSUPP;
+
+        mask.fixed = 0;
+        mask.maxrate = 0;
+
+        if (rate->value < 0) {
+                /* nothing */
+        } else if (rate->fixed) {
+                mask.fixed = rate->value / 1000; /* kbps */
+        } else {
+                mask.maxrate = rate->value / 1000; /* kbps */
+        }
+
+        return rdev->ops->set_bitrate_mask(wdev->wiphy, dev, NULL, &mask);
+}
+EXPORT_SYMBOL_GPL(cfg80211_wext_siwrate);
+
+int cfg80211_wext_giwrate(struct net_device *dev,
+                          struct iw_request_info *info,
+                          struct iw_param *rate, char *extra)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+        /* we are under RTNL - globally locked - so can use a static struct */
+        static struct station_info sinfo;
+        u8 *addr;
+        int err;
+
+        if (wdev->iftype != NL80211_IFTYPE_STATION)
+                return -EOPNOTSUPP;
+
+        if (!rdev->ops->get_station)
+                return -EOPNOTSUPP;
+
+        addr = wdev->wext.connect.bssid;
+        if (!addr)
+                return -EOPNOTSUPP;
+
+        err = rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo);
+        if (err)
+                return err;
+
+        if (!(sinfo.filled & STATION_INFO_TX_BITRATE))
+                return -EOPNOTSUPP;
+
+        rate->value = 0;
+
+        if (!(sinfo.txrate.flags & RATE_INFO_FLAGS_MCS))
+                rate->value = 100000 * sinfo.txrate.legacy;
+
+        return 0;
+}
+EXPORT_SYMBOL_GPL(cfg80211_wext_giwrate);