addons: bridge: read bridge multicast_v4_queriers from sysfs

[mirror_ifupdown2.git] / ifupdown2 / ifupdownaddons / LinkUtils.py

diff --git a/ifupdown2/ifupdownaddons/LinkUtils.py b/ifupdown2/ifupdownaddons/LinkUtils.py
index a0c7c63efa222cb0579ad5b4b70e8af9a2db37e0..ab1dd6e6d4b1e36d550d56401569bd21f2679958 100644 (file)
--- a/ifupdown2/ifupdownaddons/LinkUtils.py
+++ b/ifupdown2/ifupdownaddons/LinkUtils.py
@@ -2595,6 +2595,31 @@ class LinkUtils(utilsBase):
             return mcqv4src.get(vlan)
         return mcqv4src
 
+    def bridge_get_mcqv4src_sysfs(self, bridge, vlan=None):
+        if not LinkUtils.bridge_utils_is_installed:
+            return {}
+        if not self.supported_command['showmcqv4src']:
+            return {}
+        if ifupdownflags.flags.PERFMODE:
+            return {}
+        mcqv4src = {}
+        try:
+            filename = '/sys/class/net/%s/bridge/multicast_v4_queriers' % bridge
+            if os.path.exists(filename):
+                for line in self.read_file(filename) or []:
+                    vlan_id, ip = line.split('=')
+                    mcqv4src[vlan_id] = ip.strip()
+        except Exception as e:
+            s = str(e).lower()
+            msg = ('%s showmcqv4src: skipping unsupported command'
+                   % utils.brctl_cmd)
+            self.logger.info(msg)
+            self.supported_command['showmcqv4src'] = False
+            return {}
+        if vlan:
+            return mcqv4src.get(vlan)
+        return mcqv4src
+
     @staticmethod
     def bridge_set_mclmi(bridge, mclmi):
         if not LinkUtils.bridge_utils_is_installed: