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-rw-r--r--include/net/cfg80211.h4
-rw-r--r--net/wireless/mesh.c8
-rw-r--r--net/wireless/nl80211.c3
3 files changed, 15 insertions, 0 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index b083e6cbae8c..fa25fbb67cb6 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1441,6 +1441,9 @@ struct mesh_config {
* @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
* @basic_rates: basic rates to use when creating the mesh
* @beacon_rate: bitrate to be used for beacons
+ * @userspace_handles_dfs: whether user space controls DFS operation, i.e.
+ * changes the channel when a radar is detected. This is required
+ * to operate on DFS channels.
*
* These parameters are fixed when the mesh is created.
*/
@@ -1462,6 +1465,7 @@ struct mesh_setup {
int mcast_rate[NUM_NL80211_BANDS];
u32 basic_rates;
struct cfg80211_bitrate_mask beacon_rate;
+ bool userspace_handles_dfs;
};
/**
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index ec0b1c20ac99..421a6b80ec62 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -174,6 +174,14 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
scan_width);
}
+ err = cfg80211_chandef_dfs_required(&rdev->wiphy,
+ &setup->chandef,
+ NL80211_IFTYPE_MESH_POINT);
+ if (err < 0)
+ return err;
+ if (err > 0 && !setup->userspace_handles_dfs)
+ return -EINVAL;
+
if (!cfg80211_reg_can_beacon(&rdev->wiphy, &setup->chandef,
NL80211_IFTYPE_MESH_POINT))
return -EINVAL;
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index c3bc9da30cff..d47e55e3f445 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -9962,6 +9962,9 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
return err;
}
+ setup.userspace_handles_dfs =
+ nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
+
return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
}