cfg80211: provide channel to join_mesh function

Just like the AP mode patch, instead of setting
the channel and then joining the mesh network,
provide the channel to join the network on to
the join_mesh() function.

Like in AP mode, you can also give the channel
to the join-mesh nl80211 command now.

Unlike AP mode, it picks a default channel if
none was given.

As libertas uses mesh mode interfaces but has
no join_mesh callback and we can't simply break
it, keep some compatibility code for that case
and configure the channel directly for it.

In the non-libertas case, where we store the
channel until join, allow setting it while the
interface is down.

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

1 files changed, 11 insertions, 1 deletions

diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index b082fcc26f06..faeb03548aa4 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -796,7 +796,6 @@ static int cfg80211_wext_siwfreq(struct net_device *dev,
         case NL80211_IFTYPE_ADHOC:
                 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
         case NL80211_IFTYPE_MONITOR:
-        case NL80211_IFTYPE_MESH_POINT:
                 freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
                 if (freq < 0)
                         return freq;
@@ -808,6 +807,17 @@ static int cfg80211_wext_siwfreq(struct net_device *dev,
                 wdev_unlock(wdev);
                 mutex_unlock(&rdev->devlist_mtx);
                 return err;
+        case NL80211_IFTYPE_MESH_POINT:
+                freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
+                if (freq < 0)
+                        return freq;
+                if (freq == 0)
+                        return -EINVAL;
+                mutex_lock(&rdev->devlist_mtx);
+                err = cfg80211_set_mesh_freq(rdev, wdev, freq,
+                                             NL80211_CHAN_NO_HT);
+                mutex_unlock(&rdev->devlist_mtx);
+                return err;
         default:
                 return -EOPNOTSUPP;
         }