cfg80211: always set IBSS basic rates

IBSS started from wireless extensions is currently
missing basic rate configuration, fix this by moving
the code to generate the default to the common code
that gets invoked for both nl80211 and wext.

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

1 files changed, 19 insertions, 0 deletions

diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index 27a8ce9343c3..8cb6e08373b9 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -88,6 +88,25 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
         if (wdev->ssid_len)
                 return -EALREADY;
 
+        if (!params->basic_rates) {
+                /*
+                * If no rates were explicitly configured,
+                * use the mandatory rate set for 11b or
+                * 11a for maximum compatibility.
+                */
+                struct ieee80211_supported_band *sband =
+                        rdev->wiphy.bands[params->channel->band];
+                int j;
+                u32 flag = params->channel->band == IEEE80211_BAND_5GHZ ?
+                        IEEE80211_RATE_MANDATORY_A :
+                        IEEE80211_RATE_MANDATORY_B;
+
+                for (j = 0; j < sband->n_bitrates; j++) {
+                        if (sband->bitrates[j].flags & flag)
+                                params->basic_rates |= BIT(j);
+                }
+        }
+
         if (WARN_ON(wdev->connect_keys))
                 kfree(wdev->connect_keys);
         wdev->connect_keys = connkeys;