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authorTibor Frank <tifrank@cisco.com>2016-08-24 16:09:20 +0200
committerTibor Frank <tifrank@cisco.com>2016-09-05 14:02:48 +0200
commitc3bf9f6ad20223998c1103ba3061a5e338979e2b (patch)
treeeb8aca3374dc12f708d6fe9fcfd9f70eab6d1a3c /resources/libraries/python/IPUtil.py
parent752104dfc1b8453367f0d6740f628b702c07e0b5 (diff)
CSIT-229: ip4-lispgpe-ip4
- main fib, - vrf, - phy2lisp Change-Id: Ic9bacef4574dc07b25041c4cd0653825a65c94fb Signed-off-by: Tibor Frank <tifrank@cisco.com>
Diffstat (limited to 'resources/libraries/python/IPUtil.py')
-rw-r--r--resources/libraries/python/IPUtil.py68
1 files changed, 67 insertions, 1 deletions
diff --git a/resources/libraries/python/IPUtil.py b/resources/libraries/python/IPUtil.py
index 5011708c39..ed38272645 100644
--- a/resources/libraries/python/IPUtil.py
+++ b/resources/libraries/python/IPUtil.py
@@ -17,7 +17,7 @@ from ipaddress import IPv4Network, ip_address
from resources.libraries.python.ssh import SSH
from resources.libraries.python.constants import Constants
-
+from resources.libraries.python.ssh import exec_cmd_no_error, exec_cmd
from resources.libraries.python.topology import Topology
@@ -73,6 +73,72 @@ class IPUtil(object):
raise AssertionError('IP addresses are not equal: {0} != {1}'.
format(ip1, ip2))
+ @staticmethod
+ def setup_network_namespace(node, namespace_name, interface_name,
+ ip_address, prefix):
+ """Setup namespace on given node and attach interface and IP to
+ this namespace. Applicable also on TG node.
+
+ :param node: Node to set namespace on.
+ :param namespace_name: Namespace name.
+ :param interface_name: Interface name.
+ :param ip_address: IP address of namespace's interface.
+ :param prefix: IP address prefix length.
+ :type node: dict
+ :type namespace_name: str
+ :type vhost_if: str
+ :type ip_address: str
+ :type prefix: int
+ """
+ cmd = ('ip netns add {0}'.format(namespace_name))
+ exec_cmd_no_error(node, cmd, sudo=True)
+
+ cmd = ('ip link set dev {0} up netns {1}'.format(interface_name,
+ namespace_name))
+ exec_cmd_no_error(node, cmd, sudo=True)
+
+ cmd = ('ip netns exec {0} ip addr add {1}/{2} dev {3}'.format(
+ namespace_name, ip_address, prefix, interface_name))
+ exec_cmd_no_error(node, cmd, sudo=True)
+
+ @staticmethod
+ def linux_enable_forwarding(node, ip_ver='ipv4'):
+ """Enable forwarding on a Linux node, e.g. VM.
+
+ :param node: Node to enable forwarding on.
+ :param ip_ver: IP version, 'ipv4' or 'ipv6'.
+ :type node: dict
+ :type ip_ver: str
+ """
+ cmd = 'sysctl -w net.{0}.ip_forward=1'.format(ip_ver)
+ exec_cmd_no_error(node, cmd, sudo=True)
+
+ @staticmethod
+ def set_linux_interface_ip(node, interface, ip, prefix, namespace=None):
+ """Set IP address to interface in linux.
+
+ :param node: Node where to execute command.
+ :param interface: Interface in namespace.
+ :param ip: 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: str
+ :type prefix: int
+ :type namespace: str
+ :raises RuntimeError: IP could not be set.
+ """
+ if namespace is not None:
+ cmd = 'ip netns exec {} ip addr add {}/{} dev {}'.format(
+ namespace, ip, prefix, interface)
+ else:
+ cmd = 'ip addr add {}/{} dev {}'.format(ip, prefix, interface)
+ (rc, _, stderr) = exec_cmd(node, cmd, timeout=5, sudo=True)
+ if rc != 0:
+ raise RuntimeError(
+ 'Could not set IP for interface, reason:{}'.format(stderr))
+
def convert_ipv4_netmask_prefix(network):
"""Convert network mask to equivalent network prefix length or vice versa.