vpp: T8355: Set MTU for vpp interfaces

8 files changed, 61 insertions, 3 deletions

diff --git a/python/vyos/ifconfig/vpp/bond.py b/python/vyos/ifconfig/vpp/bond.py
index 75849a620..a1c6f2ef3 100644
--- a/python/vyos/ifconfig/vpp/bond.py
+++ b/python/vyos/ifconfig/vpp/bond.py
@@ -148,5 +148,8 @@ class VPPBondInterface(Interface, VPPInterface):
         if rx_mode:
             self.set_rx_mode(rx_mode)
 
+        # Apply VPP-specific interface settings
+        VPPInterface.update(self, config)
+
         # Apply all settings to the lcp pair (kernel) interface
         super().update(config)
diff --git a/python/vyos/ifconfig/vpp/gre.py b/python/vyos/ifconfig/vpp/gre.py
index 0cec5e3c9..074977500 100644
--- a/python/vyos/ifconfig/vpp/gre.py
+++ b/python/vyos/ifconfig/vpp/gre.py
@@ -141,4 +141,7 @@ class VPPGREInterface(Interface, VPPInterface):
         if rx_mode:
             self.set_rx_mode(rx_mode)
 
-        super().update(config)
+        # Apply VPP-specific interface settings
+        VPPInterface.update(self, config)
+
+        super().update(config)
\ No newline at end of file
diff --git a/python/vyos/ifconfig/vpp/interface.py b/python/vyos/ifconfig/vpp/interface.py
index 1b87af4d2..17a897f74 100644
--- a/python/vyos/ifconfig/vpp/interface.py
+++ b/python/vyos/ifconfig/vpp/interface.py
@@ -54,3 +54,20 @@ class VPPInterface:
             lcp_name = lcp_pair.get('vpp_name_kernel')
             if lcp_name:
                 self.vpp.iface_rxmode(lcp_name, rx_mode)
+
+    def set_mtu_vpp(self, mtu):
+        # Set MTU for the VPP interface
+        self.vpp.set_iface_mtu(self.vpp_ifname, mtu)
+
+        # Set MTU for the LCP pair interface
+        lcp_pair = self.vpp.lcp_pair_find(vpp_name_hw=self.vpp_ifname)
+        if lcp_pair:
+            lcp_name = lcp_pair.get('vpp_name_kernel')
+            if lcp_name:
+                self.vpp.set_iface_mtu(lcp_name, mtu)
+
+    def update(self, config):
+        # Set MTU
+        if 'mtu' in config:
+            mtu = int(config['mtu'])
+            self.set_mtu_vpp(mtu)
diff --git a/python/vyos/ifconfig/vpp/ipip.py b/python/vyos/ifconfig/vpp/ipip.py
index fff79fd43..baec9f1c7 100644
--- a/python/vyos/ifconfig/vpp/ipip.py
+++ b/python/vyos/ifconfig/vpp/ipip.py
@@ -105,5 +105,8 @@ class VPPIPIPInterface(Interface, VPPInterface):
         if rx_mode:
             self.set_rx_mode(rx_mode)
 
+        # Apply VPP-specific interface settings
+        VPPInterface.update(self, config)
+
         # Apply all settings to the lcp pair (kernel) interface
         super().update(config)
diff --git a/python/vyos/ifconfig/vpp/loopback.py b/python/vyos/ifconfig/vpp/loopback.py
index 36a30cb58..5ef7ead23 100644
--- a/python/vyos/ifconfig/vpp/loopback.py
+++ b/python/vyos/ifconfig/vpp/loopback.py
@@ -101,5 +101,7 @@ class VPPLoopbackInterface(Interface, VPPInterface):
         if rx_mode:
             self.set_rx_mode(rx_mode)
 
+        VPPInterface.update(self, config)
+
         # Apply all settings to the lcp pair (kernel) interface
         super().update(config)
diff --git a/python/vyos/ifconfig/vpp/vxlan.py b/python/vyos/ifconfig/vpp/vxlan.py
index 8ca9bee70..da4e7ed50 100644
--- a/python/vyos/ifconfig/vpp/vxlan.py
+++ b/python/vyos/ifconfig/vpp/vxlan.py
@@ -122,4 +122,6 @@ class VPPVXLANInterface(Interface, VPPInterface):
         if rx_mode:
             self.set_rx_mode(rx_mode)
 
+        VPPInterface.update(self, config)
+
         super().update(config)
diff --git a/python/vyos/utils/network.py b/python/vyos/utils/network.py
index 217428a21..de283e546 100644
--- a/python/vyos/utils/network.py
+++ b/python/vyos/utils/network.py
@@ -696,3 +696,28 @@ def is_valid_ipv6_address_or_range(addr: str) -> bool:
             return ip_network(addr).version == 6
     except:
         return False
+
+
+def get_interfaces_by_ip(ip_address: str) -> list:
+    """
+    Return a list of all interface names assigned the given IP address.
+    Args:
+        ip_address (str): The IP address to search for.
+    Returns:
+        list: List of interface names (str) that have the given IP address assigned.
+              Returns an empty list if no interface has the IP assigned.
+    """
+    import netifaces
+    from vyos.template import is_ipv6
+
+    addr_type = AF_INET
+    if is_ipv6(ip_address):
+        addr_type = AF_INET6
+
+    ifaces = []
+    for interface in netifaces.interfaces():
+        addresses = netifaces.ifaddresses(interface)
+        for addr_info in addresses.get(addr_type, []):
+            if addr_info.get('addr') == ip_address:
+                ifaces.append(interface)
+    return ifaces
diff --git a/python/vyos/vpp/control_vpp.py b/python/vyos/vpp/control_vpp.py
index 2daaed423..5f3a18848 100644
--- a/python/vyos/vpp/control_vpp.py
+++ b/python/vyos/vpp/control_vpp.py
@@ -422,8 +422,11 @@ class VPPControl:
             mtu (int): MTU
         """
         iface_index = self.get_sw_if_index(iface_name_vpp)
-        api_call_args: dict[str, str | int] = {'sw_if_index': iface_index, 'mtu': mtu}
-        return self.__vpp_api_client.api.hw_interface_set_mtu(**api_call_args)
+        api_call_args: dict[str, int | list[int]] = {
+            'sw_if_index': iface_index,
+            'mtu': [mtu, 0, 0, 0],
+        }
+        return self.__vpp_api_client.api.sw_interface_set_mtu(**api_call_args)
 
     @_Decorators.api_call
     def get_sw_if_dev_type(self, ifname: str) -> int | None: