nl80211: Add basic rate configuration for AP mode

Add a new attribute, NL80211_ATTR_BSS_BASIC_RATES, that can be used with
NL80211_CMD_SET_BSS for userspace (e.g., hostapd) to set which rates are
in the basic rate set.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 91f56a48e2b4..442a4d7b1808 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1046,6 +1046,24 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
                 changed |= BSS_CHANGED_ERP_SLOT;
         }
 
+        if (params->basic_rates) {
+                int i, j;
+                u32 rates = 0;
+                struct ieee80211_local *local = wiphy_priv(wiphy);
+                struct ieee80211_supported_band *sband =
+                        wiphy->bands[local->oper_channel->band];
+
+                for (i = 0; i < params->basic_rates_len; i++) {
+                        int rate = (params->basic_rates[i] & 0x7f) * 5;
+                        for (j = 0; j < sband->n_bitrates; j++) {
+                                if (sband->bitrates[j].bitrate == rate)
+                                        rates |= BIT(j);
+                        }
+                }
+                sdata->vif.bss_conf.basic_rates = rates;
+                changed |= BSS_CHANGED_BASIC_RATES;
+        }
+
         ieee80211_bss_info_change_notify(sdata, changed);
 
         return 0;