X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Flibraries%2Fpython%2FIPUtil.py;h=57a738bb469ee2f59ac32250242577fd85727327;hp=8ad01c491bb00785bdc68efe8c0ec33f201107fd;hb=b758131f3cca4047c31d74fe772168b59a56baf1;hpb=8c12ff59f1a5e750151f5eb0e806dcc80e91c3c2

diff --git a/resources/libraries/python/IPUtil.py b/resources/libraries/python/IPUtil.py
index 8ad01c491b..57a738bb46 100644
--- a/resources/libraries/python/IPUtil.py
+++ b/resources/libraries/python/IPUtil.py
@@ -1,4 +1,5 @@
-# Copyright (c) 2016 Cisco and/or its affiliates.
+# Copyright (c) 2021 Cisco and/or its affiliates.
+# Copyright (c) 2021 PANTHEON.tech s.r.o.
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at:
@@ -13,30 +14,838 @@
 
 """Common IP utilities library."""
 
-from resources.libraries.python.ssh import SSH
-from resources.libraries.python.constants import Constants
+import re
+import os
 
+from enum import IntEnum
 
-class IPUtil(object):
+from ipaddress import ip_address, ip_network
+
+from resources.libraries.python.Constants import Constants
+from resources.libraries.python.IncrementUtil import ObjIncrement
+from resources.libraries.python.InterfaceUtil import InterfaceUtil
+from resources.libraries.python.IPAddress import IPAddress
+from resources.libraries.python.PapiExecutor import PapiSocketExecutor
+from resources.libraries.python.ssh import exec_cmd_no_error, exec_cmd
+from resources.libraries.python.topology import Topology
+from resources.libraries.python.VatExecutor import VatExecutor
+from resources.libraries.python.Namespaces import Namespaces
+
+
+# from vpp/src/vnet/vnet/mpls/mpls_types.h
+MPLS_IETF_MAX_LABEL = 0xfffff
+MPLS_LABEL_INVALID = MPLS_IETF_MAX_LABEL + 1
+
+
+class FibPathType(IntEnum):
+    """FIB path types."""
+    FIB_PATH_TYPE_NORMAL = 0
+    FIB_PATH_TYPE_LOCAL = 1
+    FIB_PATH_TYPE_DROP = 2
+    FIB_PATH_TYPE_UDP_ENCAP = 3
+    FIB_PATH_TYPE_BIER_IMP = 4
+    FIB_PATH_TYPE_ICMP_UNREACH = 5
+    FIB_PATH_TYPE_ICMP_PROHIBIT = 6
+    FIB_PATH_TYPE_SOURCE_LOOKUP = 7
+    FIB_PATH_TYPE_DVR = 8
+    FIB_PATH_TYPE_INTERFACE_RX = 9
+    FIB_PATH_TYPE_CLASSIFY = 10
+
+
+class FibPathFlags(IntEnum):
+    """FIB path flags."""
+    FIB_PATH_FLAG_NONE = 0
+    FIB_PATH_FLAG_RESOLVE_VIA_ATTACHED = 1
+    FIB_PATH_FLAG_RESOLVE_VIA_HOST = 2
+
+
+class FibPathNhProto(IntEnum):
+    """FIB path next-hop protocol."""
+    FIB_PATH_NH_PROTO_IP4 = 0
+    FIB_PATH_NH_PROTO_IP6 = 1
+    FIB_PATH_NH_PROTO_MPLS = 2
+    FIB_PATH_NH_PROTO_ETHERNET = 3
+    FIB_PATH_NH_PROTO_BIER = 4
+
+
+class IpDscp(IntEnum):
+    """DSCP code points."""
+    IP_API_DSCP_CS0 = 0
+    IP_API_DSCP_CS1 = 8
+    IP_API_DSCP_AF11 = 10
+    IP_API_DSCP_AF12 = 12
+    IP_API_DSCP_AF13 = 14
+    IP_API_DSCP_CS2 = 16
+    IP_API_DSCP_AF21 = 18
+    IP_API_DSCP_AF22 = 20
+    IP_API_DSCP_AF23 = 22
+    IP_API_DSCP_CS3 = 24
+    IP_API_DSCP_AF31 = 26
+    IP_API_DSCP_AF32 = 28
+    IP_API_DSCP_AF33 = 30
+    IP_API_DSCP_CS4 = 32
+    IP_API_DSCP_AF41 = 34
+    IP_API_DSCP_AF42 = 36
+    IP_API_DSCP_AF43 = 38
+    IP_API_DSCP_CS5 = 40
+    IP_API_DSCP_EF = 46
+    IP_API_DSCP_CS6 = 48
+    IP_API_DSCP_CS7 = 50
+
+
+class NetworkIncrement(ObjIncrement):
+    """
+    An iterator object which accepts an IPv4Network or IPv6Network and
+    returns a new network, its address part incremented by the increment
+    number of network sizes, each time it is iterated or when inc_fmt is called.
+    The increment may be positive, negative or 0
+    (in which case the network is always the same).
+
+    Both initial and subsequent IP address can have host bits set,
+    check the initial value before creating instance if needed.
+    String formatting is configurable via constructor argument.
+    """
+    def __init__(self, initial_value, increment=1, format=u"dash"):
+        """
+        :param initial_value: The initial network. Can have host bits set.
+        :param increment: The current network will be incremented by this
+            amount of network sizes in each iteration/var_str call.
+        :param format: Type of formatting to use, "dash" or "slash" or "addr".
+        :type initial_value: Union[ipaddress.IPv4Network, ipaddress.IPv6Network]
+        :type increment: int
+        :type format: str
+        """
+        super().__init__(initial_value, increment)
+        self._prefix_len = self._value.prefixlen
+        host_len = self._value.max_prefixlen - self._prefix_len
+        self._net_increment = self._increment * (1 << host_len)
+        self._format = str(format).lower()
+
+    def _incr(self):
+        """
+        Increment the network, e.g.:
+        '30.0.0.0/24' incremented by 1 (the next network) is '30.0.1.0/24'.
+        '30.0.0.0/24' incremented by 2 is '30.0.2.0/24'.
+        """
+        self._value = ip_network(
+            f"{self._value.network_address + self._net_increment}"
+            f"/{self._prefix_len}", strict=False
+        )
+
+    def _str_fmt(self):
+        """
+        The string representation of the network depends on format.
+
+        Dash format is '<ip_address_start> - <ip_address_stop>',
+        useful for 'ipsec policy add spd' CLI.
+
+        Slash format is '<ip_address_start>/<prefix_length>',
+        useful for other CLI.
+
+        Addr format is '<ip_address_start>', useful for PAPI.
+
+        :returns: Current value converted to string according to format.
+        :rtype: str
+        :raises RuntimeError: If the format is not supported.
+        """
+        if self._format == u"dash":
+            return f"{self._value.network_address} - " \
+                   f"{self._value.broadcast_address}"
+        elif self._format == u"slash":
+            return f"{self._value.network_address}/{self._prefix_len}"
+        elif self._format == u"addr":
+            return f"{self._value.network_address}"
+        else:
+            raise RuntimeError(f"Unsupported format {self._format}")
+
+
+class IPUtil:
     """Common IP utilities"""
 
+    @staticmethod
+    def ip_to_int(ip_str):
+        """Convert IP address from string format (e.g. 10.0.0.1) to integer
+        representation (167772161).
+
+        :param ip_str: IP address in string representation.
+        :type ip_str: str
+        :returns: Integer representation of IP address.
+        :rtype: int
+        """
+        return int(ip_address(ip_str))
+
+    @staticmethod
+    def int_to_ip(ip_int):
+        """Convert IP address from integer representation (e.g. 167772161) to
+        string format (10.0.0.1).
+
+        :param ip_int: IP address in integer representation.
+        :type ip_int: int
+        :returns: String representation of IP address.
+        :rtype: str
+        """
+        return str(ip_address(ip_int))
+
+    @staticmethod
+    def vpp_get_interface_ip_addresses(node, interface, ip_version):
+        """Get list of IP addresses from an interface on a VPP node.
+
+        :param node: VPP node.
+        :param interface: Name of an interface on the VPP node.
+        :param ip_version: IP protocol version (ipv4 or ipv6).
+        :type node: dict
+        :type interface: str
+        :type ip_version: str
+        :returns: List of dictionaries, each containing IP address, subnet
+            prefix length and also the subnet mask for ipv4 addresses.
+            Note: A single interface may have multiple IP addresses assigned.
+        :rtype: list
+        """
+        sw_if_index = InterfaceUtil.get_interface_index(node, interface)
+
+        if not sw_if_index:
+            return list()
+
+        cmd = u"ip_address_dump"
+        args = dict(
+            sw_if_index=sw_if_index,
+            is_ipv6=bool(ip_version == u"ipv6")
+        )
+        err_msg = f"Failed to get L2FIB dump on host {node[u'host']}"
+
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd, **args).get_details(err_msg)
+
+        return details
+
+    @staticmethod
+    def vpp_get_ip_tables(node):
+        """Get dump of all IP FIB tables on a VPP node.
+
+        :param node: VPP node.
+        :type node: dict
+        """
+        PapiSocketExecutor.run_cli_cmd(node, u"show ip fib")
+        PapiSocketExecutor.run_cli_cmd(node, u"show ip fib summary")
+        PapiSocketExecutor.run_cli_cmd(node, u"show ip6 fib")
+        PapiSocketExecutor.run_cli_cmd(node, u"show ip6 fib summary")
+
+    @staticmethod
+    def vpp_get_ip_table_summary(node):
+        """Get IPv4 FIB table summary on a VPP node.
+
+        :param node: VPP node.
+        :type node: dict
+        """
+        PapiSocketExecutor.run_cli_cmd(node, u"show ip fib summary")
+
+    @staticmethod
+    def vpp_get_ip_table(node):
+        """Get IPv4 FIB table on a VPP node.
+
+        :param node: VPP node.
+        :type node: dict
+        """
+        PapiSocketExecutor.run_cli_cmd(node, u"show ip fib")
+
+    @staticmethod
+    def vpp_get_ip_tables_prefix(node, address):
+        """Get dump of all IP FIB tables on a VPP node.
+
+        :param node: VPP node.
+        :param address: IP address.
+        :type node: dict
+        :type address: str
+        """
+        addr = ip_address(address)
+        ip_ver = u"ip6" if addr.version == 6 else u"ip"
+
+        PapiSocketExecutor.run_cli_cmd(
+            node, f"show {ip_ver} fib {addr}/{addr.max_prefixlen}"
+        )
+
+    @staticmethod
+    def get_interface_vrf_table(node, interface, ip_version='ipv4'):
+        """Get vrf ID for the given interface.
+
+        :param node: VPP node.
+        :param interface: Name or sw_if_index of a specific interface.
+        :type node: dict
+        :param ip_version: IP protocol version (ipv4 or ipv6).
+        :type interface: str or int
+        :type ip_version: str
+        :returns: vrf ID of the specified interface.
+        :rtype: int
+        """
+        sw_if_index = InterfaceUtil.get_interface_index(node, interface)
+
+        cmd = u"sw_interface_get_table"
+        args = dict(
+            sw_if_index=sw_if_index,
+            is_ipv6=bool(ip_version == u"ipv6")
+        )
+        err_msg = f"Failed to get VRF id assigned to interface {interface}"
+
+        with PapiSocketExecutor(node) as papi_exec:
+            reply = papi_exec.add(cmd, **args).get_reply(err_msg)
+
+        return reply[u"vrf_id"]
+
+    @staticmethod
+    def vpp_ip_source_check_setup(node, if_name):
+        """Setup Reverse Path Forwarding source check on interface.
+
+        :param node: VPP node.
+        :param if_name: Interface name to setup RPF source check.
+        :type node: dict
+        :type if_name: str
+        """
+        cmd = u"ip_source_check_interface_add_del"
+        args = dict(
+            sw_if_index=InterfaceUtil.get_interface_index(node, if_name),
+            is_add=1,
+            loose=0
+        )
+        err_msg = f"Failed to enable source check on interface {if_name}"
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
     @staticmethod
     def vpp_ip_probe(node, interface, addr):
         """Run ip probe on VPP node.
 
         :param node: VPP node.
-        :param interface: Interface name.
+        :param interface: Interface key or name.
         :param addr: IPv4/IPv6 address.
         :type node: dict
         :type interface: str
         :type addr: str
         """
-        ssh = SSH()
-        ssh.connect(node)
+        cmd = u"ip_probe_neighbor"
+        args = dict(
+            sw_if_index=InterfaceUtil.get_interface_index(node, interface),
+            dst=str(addr)
+        )
+        err_msg = f"VPP ip probe {interface} {addr} failed on {node[u'host']}"
+
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def ip_addresses_should_be_equal(ip1, ip2):
+        """Fails if the given IP addresses are unequal.
+
+        :param ip1: IPv4 or IPv6 address.
+        :param ip2: IPv4 or IPv6 address.
+        :type ip1: str
+        :type ip2: str
+        """
+        addr1 = ip_address(ip1)
+        addr2 = ip_address(ip2)
+
+        if addr1 != addr2:
+            raise AssertionError(f"IP addresses are not equal: {ip1} != {ip2}")
+
+    @staticmethod
+    def setup_network_namespace(node, namespace_name, interface_name,
+                                ip_addr_list, prefix_length):
+        """Setup namespace on given node and attach interface and IP to
+        this namespace. Applicable also on TG node.
+
+        :param node: VPP node.
+        :param namespace_name: Namespace name.
+        :param interface_name: Interface name.
+        :param ip_addr_list: List of IP addresses of namespace's interface.
+        :param prefix_length: IP address prefix length.
+        :type node: dict
+        :type namespace_name: str
+        :type interface_name: str
+        :type ip_addr_list: list
+        :type prefix_length: int
+        """
+        Namespaces.create_namespace(node, namespace_name)
+
+        cmd = f"ip netns exec {namespace_name} ip link set {interface_name} up"
+        exec_cmd_no_error(node, cmd, sudo=True)
+
+        for ip_addr in ip_addr_list:
+            cmd = f"ip netns exec {namespace_name} ip addr add " \
+                f"{ip_addr}/{prefix_length} dev {interface_name}"
+            exec_cmd_no_error(node, cmd, sudo=True)
+
+    @staticmethod
+    def linux_enable_forwarding(node, ip_ver=u"ipv4"):
+        """Enable forwarding on a Linux node, e.g. VM.
+
+        :param node: VPP node.
+        :param ip_ver: IP version, 'ipv4' or 'ipv6'.
+        :type node: dict
+        :type ip_ver: str
+        """
+        cmd = f"sysctl -w net.{ip_ver}.ip_forward=1"
+        exec_cmd_no_error(node, cmd, sudo=True)
+
+    @staticmethod
+    def get_linux_interface_name(node, pci_addr):
+        """Get the interface name.
+
+        :param node: VPP/TG node.
+        :param pci_addr: PCI address
+        :type node: dict
+        :type pci_addr: str
+        :returns: Interface name
+        :rtype: str
+        :raises RuntimeError: If cannot get the information about interfaces.
+        """
+        regex_intf_info = \
+            r"pci@([0-9a-f]{4}:[0-9a-f]{2}:[0-9a-f]{2}.[0-9a-f])\s" \
+            r"*([a-zA-Z0-9]*)\s*network"
+
+        cmd = u"lshw -class network -businfo"
+        ret_code, stdout, stderr = exec_cmd(node, cmd, timeout=30, sudo=True)
+        if ret_code != 0:
+            raise RuntimeError(
+                f"Could not get information about interfaces:\n{stderr}"
+            )
+
+        for line in stdout.splitlines()[2:]:
+            try:
+                if re.search(regex_intf_info, line).group(1) == pci_addr:
+                    return re.search(regex_intf_info, line).group(2)
+            except AttributeError:
+                continue
+        return None
+
+    @staticmethod
+    def set_linux_interface_up(
+            node, interface, namespace=None):
+        """Set the specified interface up.
+        :param node: VPP/TG node.
+        :param interface: Interface in namespace.
+        :param namespace: Execute command in namespace. Optional
+        :type node: dict
+        :type interface: str
+        :type namespace: str
+        :raises RuntimeError: If the interface could not be set up.
+        """
+        if namespace is not None:
+            cmd = f"ip netns exec {namespace} ip link set dev {interface} up"
+        else:
+            cmd = f"ip link set dev {interface} up"
+        exec_cmd_no_error(node, cmd, timeout=30, sudo=True)
+
+
+    @staticmethod
+    def set_linux_interface_ip(
+            node, interface, ip_addr, prefix, namespace=None):
+        """Set IP address to interface in linux.
+
+        :param node: VPP/TG node.
+        :param interface: Interface in namespace.
+        :param ip_addr: IP to be set on interface.
+        :param prefix: IP prefix.
+        :param namespace: Execute command in namespace. Optional
+        :type node: dict
+        :type interface: str
+        :type ip_addr: str
+        :type prefix: int
+        :type namespace: str
+        :raises RuntimeError: IP could not be set.
+        """
+        if namespace is not None:
+            cmd = f"ip netns exec {namespace} ip addr add {ip_addr}/{prefix}" \
+                f" dev {interface}"
+        else:
+            cmd = f"ip addr add {ip_addr}/{prefix} dev {interface}"
+
+        exec_cmd_no_error(node, cmd, timeout=5, sudo=True)
+
+    @staticmethod
+    def delete_linux_interface_ip(
+            node, interface, ip_addr, prefix_length, namespace=None):
+        """Delete IP address from interface in linux.
+
+        :param node: VPP/TG node.
+        :param interface: Interface in namespace.
+        :param ip_addr: IP to be deleted from interface.
+        :param prefix_length: IP prefix length.
+        :param namespace: Execute command in namespace. Optional
+        :type node: dict
+        :type interface: str
+        :type ip_addr: str
+        :type prefix_length: int
+        :type namespace: str
+        :raises RuntimeError: IP could not be deleted.
+        """
+        if namespace is not None:
+            cmd = f"ip netns exec {namespace} ip addr del " \
+                f"{ip_addr}/{prefix_length} dev {interface}"
+        else:
+            cmd = f"ip addr del {ip_addr}/{prefix_length} dev {interface}"
+
+        exec_cmd_no_error(node, cmd, timeout=5, sudo=True)
+
+    @staticmethod
+    def linux_interface_has_ip(
+            node, interface, ip_addr, prefix_length, namespace=None):
+        """Return True if interface in linux has IP address.
+
+        :param node: VPP/TG node.
+        :param interface: Interface in namespace.
+        :param ip_addr: IP to be queried on interface.
+        :param prefix_length: IP prefix length.
+        :param namespace: Execute command in namespace. Optional
+        :type node: dict
+        :type interface: str
+        :type ip_addr: str
+        :type prefix_length: int
+        :type namespace: str
+        :rtype: boolean
+        :raises RuntimeError: Request fails.
+        """
+        ip_addr_with_prefix = f"{ip_addr}/{prefix_length}"
+        if namespace is not None:
+            cmd = f"ip netns exec {namespace} ip addr show dev {interface}"
+        else:
+            cmd = f"ip addr show dev {interface}"
+
+        cmd += u" | grep 'inet ' | awk -e '{print $2}'"
+        cmd += f" | grep '{ip_addr_with_prefix}'"
+        _, stdout, _ = exec_cmd(node, cmd, timeout=5, sudo=True)
+
+        has_ip = stdout.rstrip()
+        return bool(has_ip == ip_addr_with_prefix)
+
+    @staticmethod
+    def add_linux_route(node, ip_addr, prefix, gateway, namespace=None):
+        """Add linux route in namespace.
+
+        :param node: Node where to execute command.
+        :param ip_addr: Route destination IP address.
+        :param prefix: IP prefix.
+        :param namespace: Execute command in namespace. Optional.
+        :param gateway: Gateway address.
+        :type node: dict
+        :type ip_addr: str
+        :type prefix: int
+        :type gateway: str
+        :type namespace: str
+        """
+        if namespace is not None:
+            cmd = f"ip netns exec {namespace} ip route add {ip_addr}/{prefix}" \
+                f" via {gateway}"
+        else:
+            cmd = f"ip route add {ip_addr}/{prefix} via {gateway}"
+
+        exec_cmd_no_error(node, cmd, sudo=True)
+
+    @staticmethod
+    def vpp_interface_set_ip_address(
+            node, interface, address, prefix_length=None):
+        """Set IP address to VPP interface.
+
+        :param node: VPP node.
+        :param interface: Interface name.
+        :param address: IP address.
+        :param prefix_length: Prefix length.
+        :type node: dict
+        :type interface: str
+        :type address: str
+        :type prefix_length: int
+        """
+        ip_addr = ip_address(address)
+
+        cmd = u"sw_interface_add_del_address"
+        args = dict(
+            sw_if_index=InterfaceUtil.get_interface_index(node, interface),
+            is_add=True,
+            del_all=False,
+            prefix=IPUtil.create_prefix_object(
+                ip_addr,
+                prefix_length if prefix_length else 128
+                if ip_addr.version == 6 else 32
+            )
+        )
+        err_msg = f"Failed to add IP address on interface {interface}"
+
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def vpp_interface_set_ip_addresses(node, interface, ip_addr_list,
+                                       prefix_length=None):
+        """Set IP addresses to VPP interface.
+
+        :param node: VPP node.
+        :param interface: Interface name.
+        :param ip_addr_list: IP addresses.
+        :param prefix_length: Prefix length.
+        :type node: dict
+        :type interface: str
+        :type ip_addr_list: list
+        :type prefix_length: int
+        """
+        for ip_addr in ip_addr_list:
+            IPUtil.vpp_interface_set_ip_address(node, interface, ip_addr,
+                                                prefix_length)
+
+    @staticmethod
+    def vpp_add_ip_neighbor(node, iface_key, ip_addr, mac_address):
+        """Add IP neighbor on DUT node.
+
+        :param node: VPP node.
+        :param iface_key: Interface key.
+        :param ip_addr: IP address of the interface.
+        :param mac_address: MAC address of the interface.
+        :type node: dict
+        :type iface_key: str
+        :type ip_addr: str
+        :type mac_address: str
+        """
+        dst_ip = ip_address(ip_addr)
+
+        neighbor = dict(
+            sw_if_index=Topology.get_interface_sw_index(node, iface_key),
+            flags=0,
+            mac_address=str(mac_address),
+            ip_address=str(dst_ip)
+        )
+        cmd = u"ip_neighbor_add_del"
+        args = dict(
+            is_add=True,
+            neighbor=neighbor
+        )
+        err_msg = f"Failed to add IP neighbor on interface {iface_key}"
+
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def create_prefix_object(ip_addr, addr_len):
+        """Create prefix object.
+
+        :param ip_addr: IPv4 or IPv6 address.
+        :param addr_len: Length of IP address.
+        :type ip_addr: IPv4Address or IPv6Address
+        :type addr_len: int
+        :returns: Prefix object.
+        :rtype: dict
+        """
+        addr = IPAddress.create_ip_address_object(ip_addr)
+
+        return dict(
+            len=int(addr_len),
+            address=addr
+        )
+
+    @staticmethod
+    def compose_vpp_route_structure(node, network, prefix_len, **kwargs):
+        """Create route object for ip_route_add_del api call.
+
+        :param node: VPP node.
+        :param network: Route destination network address.
+        :param prefix_len: Route destination network prefix length.
+        :param kwargs: Optional key-value arguments:
+
+            gateway: Route gateway address. (str)
+            interface: Route interface. (str)
+            vrf: VRF table ID. (int)
+            count: number of IP addresses to add starting from network IP (int)
+            local: The route is local with same prefix (increment is 1).
+            If None, then is not used. (bool)
+            lookup_vrf: VRF table ID for lookup. (int)
+            weight: Weight value for unequal cost multipath routing. (int)
+            (Multipath value enters at higher level.)
+
+        :type node: dict
+        :type network: str
+        :type prefix_len: int
+        :type kwargs: dict
+        :returns: route parameter basic structure
+        :rtype: dict
+        """
+        interface = kwargs.get(u"interface", u"")
+        gateway = kwargs.get(u"gateway", u"")
+
+        net_addr = ip_address(network)
+
+        prefix = IPUtil.create_prefix_object(net_addr, prefix_len)
+
+        paths = list()
+        n_hop = dict(
+            address=IPAddress.union_addr(ip_address(gateway)) if gateway else 0,
+            via_label=MPLS_LABEL_INVALID,
+            obj_id=Constants.BITWISE_NON_ZERO
+        )
+        path = dict(
+            sw_if_index=InterfaceUtil.get_interface_index(node, interface)
+            if interface else Constants.BITWISE_NON_ZERO,
+            table_id=int(kwargs.get(u"lookup_vrf", 0)),
+            rpf_id=Constants.BITWISE_NON_ZERO,
+            weight=int(kwargs.get(u"weight", 1)),
+            preference=1,
+            type=getattr(
+                FibPathType, u"FIB_PATH_TYPE_LOCAL"
+                if kwargs.get(u"local", False)
+                else u"FIB_PATH_TYPE_NORMAL"
+            ).value,
+            flags=getattr(FibPathFlags, u"FIB_PATH_FLAG_NONE").value,
+            proto=getattr(
+                FibPathNhProto, u"FIB_PATH_NH_PROTO_IP6"
+                if net_addr.version == 6
+                else u"FIB_PATH_NH_PROTO_IP4"
+            ).value,
+            nh=n_hop,
+            n_labels=0,
+            label_stack=list(0 for _ in range(16))
+        )
+        paths.append(path)
+
+        route = dict(
+            table_id=int(kwargs.get(u"vrf", 0)),
+            prefix=prefix,
+            n_paths=len(paths),
+            paths=paths
+        )
+        return route
+
+    @staticmethod
+    def vpp_route_add(node, network, prefix_len, strict=True, **kwargs):
+        """Add route to the VPP node. Prefer multipath behavior.
+
+        :param node: VPP node.
+        :param network: Route destination network address.
+        :param prefix_len: Route destination network prefix length.
+        :param strict: If true, fail if address has host bits set.
+        :param kwargs: Optional key-value arguments:
+
+            gateway: Route gateway address. (str)
+            interface: Route interface. (str)
+            vrf: VRF table ID. (int)
+            count: number of IP addresses to add starting from network IP (int)
+            local: The route is local with same prefix (increment is 1 network)
+            If None, then is not used. (bool)
+            lookup_vrf: VRF table ID for lookup. (int)
+            multipath: Enable multipath routing. (bool) Default: True.
+            weight: Weight value for unequal cost multipath routing. (int)
+
+        :type node: dict
+        :type network: str
+        :type prefix_len: int
+        :type strict: bool
+        :type kwargs: dict
+        :raises RuntimeError: If the argument combination is not supported.
+        """
+        count = kwargs.get(u"count", 1)
+
+        if count > 100:
+            if not kwargs.get(u"multipath", True):
+                raise RuntimeError(u"VAT exec supports only multipath behavior")
+            gateway = kwargs.get(u"gateway", u"")
+            interface = kwargs.get(u"interface", u"")
+            local = kwargs.get(u"local", u"")
+            if interface:
+                interface = InterfaceUtil.vpp_get_interface_name(
+                    node, InterfaceUtil.get_interface_index(
+                        node, interface
+                    )
+                )
+            vrf = kwargs.get(u"vrf", None)
+            trailers = list()
+            if vrf:
+                trailers.append(f"table {vrf}")
+            if gateway:
+                trailers.append(f"via {gateway}")
+                if interface:
+                    trailers.append(interface)
+            elif interface:
+                trailers.append(f"via {interface}")
+            if local:
+                if gateway or interface:
+                    raise RuntimeError(u"Unsupported combination with local.")
+                trailers.append(u"local")
+            trailer = u" ".join(trailers)
+            command_parts = [u"exec ip route add", u"network goes here"]
+            if trailer:
+                command_parts.append(trailer)
+            netiter = NetworkIncrement(
+                ip_network(f"{network}/{prefix_len}", strict=strict),
+                format=u"slash"
+            )
+            tmp_filename = u"/tmp/routes.config"
+            with open(tmp_filename, u"w") as tmp_file:
+                for _ in range(count):
+                    command_parts[1] = netiter.inc_fmt()
+                    print(u" ".join(command_parts), file=tmp_file)
+            VatExecutor().execute_script(
+                tmp_filename, node, timeout=1800, json_out=False,
+                copy_on_execute=True, history=False
+            )
+            os.remove(tmp_filename)
+            return
+
+        cmd = u"ip_route_add_del"
+        args = dict(
+            is_add=True,
+            is_multipath=kwargs.get(u"multipath", True),
+            route=None
+        )
+        err_msg = f"Failed to add route(s) on host {node[u'host']}"
+
+        netiter = NetworkIncrement(
+            ip_network(f"{network}/{prefix_len}", strict=strict),
+            format=u"addr"
+        )
+        with PapiSocketExecutor(node) as papi_exec:
+            for i in range(count):
+                args[u"route"] = IPUtil.compose_vpp_route_structure(
+                    node, netiter.inc_fmt(), prefix_len, **kwargs
+                )
+                history = bool(not 0 < i < count - 1)
+                papi_exec.add(cmd, history=history, **args)
+            papi_exec.get_replies(err_msg)
+
+    @staticmethod
+    def flush_ip_addresses(node, interface):
+        """Flush all IP addresses from specified interface.
+
+        :param node: VPP node.
+        :param interface: Interface name.
+        :type node: dict
+        :type interface: str
+        """
+        cmd = u"sw_interface_add_del_address"
+        args = dict(
+            sw_if_index=InterfaceUtil.get_interface_index(node, interface),
+            is_add=False,
+            del_all=True
+        )
+        err_msg = f"Failed to flush IP address on interface {interface}"
+
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def add_fib_table(node, table_id, ipv6=False):
+        """Create new FIB table according to ID.
+
+        :param node: Node to add FIB on.
+        :param table_id: FIB table ID.
+        :param ipv6: Is this an IPv6 table
+        :type node: dict
+        :type table_id: int
+        :type ipv6: bool
+        """
+        cmd = u"ip_table_add_del"
+        table = dict(
+            table_id=int(table_id),
+            is_ip6=ipv6
+        )
+        args = dict(
+            table=table,
+            is_add=True
+        )
+        err_msg = f"Failed to add FIB table on host {node[u'host']}"
 
-        cmd = "{c}".format(c=Constants.VAT_BIN_NAME)
-        cmd_input = 'exec ip probe {dev} {ip}'.format(dev=interface, ip=addr)
-        (ret_code, _, _) = ssh.exec_command_sudo(cmd, cmd_input)
-        if int(ret_code) != 0:
-            raise Exception('VPP ip probe {dev} {ip} failed on {h}'.format(
-                dev=interface, ip=addr, h=node['host']))
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)