cfg80211/nl80211: Add userspace authentication flag to mesh setup

During mesh setup, use NL80211_MESH_SETUP_USERSPACE_AUTH flag to create
a secure mesh and route management frames to userspace.

Also, NL80211_CMD_GET_WIPHY now returns a flag NL80211_SUPPORT_MESH_AUTH
if the wiphy's mesh implementation supports routing of mesh auth frames
to userspace.  This is useful for forward compatibility between old
kernels and new userspace tools.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 14 insertions, 0 deletions

diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index ecf6b68..0e652d8 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -887,6 +887,9 @@ enum nl80211_commands {
  *	changed once the mesh is active.
  * @NL80211_ATTR_MESH_CONFIG: Mesh configuration parameters, a nested attribute
  *	containing attributes from &enum nl80211_meshconf_params.
+ * @NL80211_ATTR_SUPPORT_MESH_AUTH: Currently, this means the underlying driver
+ *	allows auth frames in a mesh to be passed to userspace for processing via
+ *	the @NL80211_MESH_SETUP_USERSPACE_AUTH flag.
  *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
@@ -1075,6 +1078,8 @@ enum nl80211_attrs {
 	NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
 	NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
 
+	NL80211_ATTR_SUPPORT_MESH_AUTH,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,
@@ -1724,6 +1729,9 @@ enum nl80211_meshconf_params {
  * robust security network ie, or a vendor specific information element that
  * vendors will use to identify the path selection methods and metrics in use.
  *
+ * @NL80211_MESH_SETUP_USERSPACE_AUTH: Enable this option if an authentication
+ * daemon will be authenticating mesh candidates.
+ *
  * @NL80211_MESH_SETUP_ATTR_MAX: highest possible mesh setup attribute number
  * @__NL80211_MESH_SETUP_ATTR_AFTER_LAST: Internal use
  */
@@ -1732,6 +1740,7 @@ enum nl80211_mesh_setup_params {
 	NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL,
 	NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC,
 	NL80211_MESH_SETUP_IE,
+	NL80211_MESH_SETUP_USERSPACE_AUTH,
 
 	/* keep last */
 	__NL80211_MESH_SETUP_ATTR_AFTER_LAST,
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 1d02ddf..e77603b 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -691,6 +691,7 @@ struct mesh_config {
  * @path_metric: which metric to use
  * @ie: vendor information elements (optional)
  * @ie_len: length of vendor information elements
+ * @is_secure: or not
  *
  * These parameters are fixed when the mesh is created.
  */
@@ -701,6 +702,7 @@ struct mesh_setup {
 	u8  path_metric;
 	const u8 *ie;
 	u8 ie_len;
+	bool is_secure;
 };
 
 /**
@@ -1451,6 +1453,8 @@ struct cfg80211_ops {
  * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN.
  * @WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS: The device supports separate
  *	unicast and multicast TX keys.
+ * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing
+ *	auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH.
  */
 enum wiphy_flags {
 	WIPHY_FLAG_CUSTOM_REGULATORY		= BIT(0),
@@ -1463,6 +1467,7 @@ enum wiphy_flags {
 	WIPHY_FLAG_CONTROL_PORT_PROTOCOL	= BIT(7),
 	WIPHY_FLAG_IBSS_RSN			= BIT(8),
 	WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS= BIT(9),
+	WIPHY_FLAG_MESH_AUTH			= BIT(10),
 };
 
 struct mac_address {