nl80211: Check whether the driver support separate auth/assoc commands

This is an initial step in adding support for the new connect command.
For now, we just add the capability query. The actual use of the new
command will be added separately.

src/drivers/driver_nl80211.c

@@ -1005,6 +1005,8 @@ nla_put_failure:
 struct wiphy_info_data {
 	int max_scan_ssids;
 	int ap_supported;
+	int auth_supported;
+	int connect_supported;
 };
 
 
@@ -1033,6 +1035,20 @@ static int wiphy_info_handler(struct nl_msg *msg, void *arg)
 		}
 	}
 
+	if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
+		struct nlattr *nl_cmd;
+		int i;
+
+		nla_for_each_nested(nl_cmd,
+				    tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
+			u32 cmd = nla_get_u32(nl_cmd);
+			if (cmd == NL80211_CMD_AUTHENTICATE)
+				info->auth_supported = 1;
+			else if (cmd == NL80211_CMD_CONNECT)
+				info->connect_supported = 1;
+		}
+	}
+
 	return NL_SKIP;
 }
 
@@ -1061,11 +1077,11 @@ nla_put_failure:
 }
 
 
-static void wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
+static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
 {
 	struct wiphy_info_data info;
 	if (wpa_driver_nl80211_get_info(drv, &info))
-		return;
+		return -1;
 	drv->has_capability = 1;
 	/* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
 	drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
@@ -1080,6 +1096,16 @@ static void wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
 	drv->capa.max_scan_ssids = info.max_scan_ssids;
 	if (info.ap_supported)
 		drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
+
+	if (info.auth_supported)
+		drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
+	else if (!info.connect_supported) {
+		wpa_printf(MSG_INFO, "nl80211: Driver does not support "
+			   "authentication/association or connect commands");
+		return -1;
+	}
+
+	return 0;
 }
 #endif /* HOSTAPD */
 
@@ -1257,8 +1283,6 @@ static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
 		return NULL;
 	}
 
-	drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
-
 	drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 	if (drv->ioctl_sock < 0) {
 		perror("socket(PF_INET,SOCK_DGRAM)");
@@ -1306,7 +1330,8 @@ wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
 		return -1;
 	}
 
-	wpa_driver_nl80211_capa(drv);
+	if (wpa_driver_nl80211_capa(drv))
+		return -1;
 
 	wpa_driver_nl80211_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
 #endif /* HOSTAPD */