In order to receive nl80211 control port frames, the nl_sock* has to
register with some attributes set. Add a helper method for this
operation.
Signed-off-by: Markus Theil <markus.theil@xxxxxxxxxxxxx>
---
src/drivers/driver_nl80211.c | 40 ++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index e6ab38639..062348285 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -437,6 +437,46 @@ int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
valid_handler, valid_data);
}
+/* use this method to mark, that it is necessary to own the connection/interface
+ * for this operation.
+ * handle may be set to NULL, to get the same behavior as send_and_recv_msgs
+ * set_owner can be used to mark this socket for receiving control port frames
+ */
+int send_and_recv_msgs_as_owner(struct wpa_driver_nl80211_data *drv,
+ struct nl_msg *msg,
+ struct nl_sock *handle, Boolean set_owner,
+ int (*valid_handler)(struct nl_msg *, void *),
+ void *valid_data)
+{
+ int ret = -1;
+
+ /* Control port over nl80211 needs the flags and attributes below.
+ *
+ * The Linux kernel has initial checks for them (in nl80211.c) like:
+ * validate_pae_over_nl80211(...)
+ * or final checks like:
+ * dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid
+ *
+ * Initial operations like ()
+ * Final operations (e.g. disassociate) don't need to set these
+ * attributes, but they have to be performed on the socket, which
+ * has the connection owner property set in the kernel.
+ */
+ if (drv->capa.flags & WPA_DRIVER_FLAGS_CONTROL_PORT &&
+ handle && set_owner)
+ if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_OVER_NL80211) ||
+ nla_put_flag(msg, NL80211_ATTR_SOCKET_OWNER) ||
+ nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE,
+ ETH_P_PAE))
+ goto out;
+
+ return send_and_recv(drv->global, handle ? handle : drv->global->nl,
+ msg, valid_handler, valid_data);
+
+out:
+ return ret;
+}
+
struct family_data {
const char *group;
--
2.24.1
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