#!/usr/bin/env python3 # Copyright (c) 2015 Cisco and/or its affiliates. # 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: # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import ipaddress import argparse import sys # map add domain ip4-pfx <pfx> ip6-pfx ::/0 ip6-src <ip6-src> ea-bits-len 0 psid-offset 6 psid-len 6 # map add rule index <0> psid <psid> ip6-dst <ip6-dst> parser = argparse.ArgumentParser(description="MAP VPP configuration generator") parser.add_argument("-t", action="store", dest="mapmode") args = parser.parse_args() # # 1:1 Shared IPv4 address, shared BR # def shared11br(): ip4_pfx = ipaddress.ip_network("20.0.0.0/16") ip6_dst = ipaddress.ip_network("bbbb::/32") psid_len = 6 for i in range(ip4_pfx.num_addresses): print( "map add domain ip4-pfx " + str(ip4_pfx[i]) + "/32 ip6-pfx ::/0 ip6-shared-src cccc:bbbb::1", "ea-bits-len 0 psid-offset 6 psid-len", psid_len, ) for psid in range(0x1 << psid_len): print( "map add rule index", i, "psid", psid, "ip6-dst", ip6_dst[(i * (0x1 << psid_len)) + psid], ) # # 1:1 Shared IPv4 address # def shared11(): ip4_pfx = ipaddress.ip_network("20.0.0.0/16") ip6_src = ipaddress.ip_network("cccc:bbbb::/64") ip6_dst = ipaddress.ip_network("bbbb::/32") psid_len = 6 for i in range(ip4_pfx.num_addresses): print( "map add domain ip4-pfx " + str(ip4_pfx[i]) + "/32 ip6-pfx ::/0 ip6-src", ip6_src[i], "ea-bits-len 0 psid-offset 6 psid-len", psid_len, ) for psid in range(0x1 << psid_len): print( "map add rule index", i, "psid", psid, "ip6-dst", ip6_dst[(i * (0x1 << psid_len)) + psid], ) # # 1:1 Shared IPv4 address small # def smallshared11(): ip4_pfx = ipaddress.ip_network("20.0.0.0/24") ip6_src = ipaddress.ip_network("cccc:bbbb::/64") ip6_dst = ipaddress.ip_network("bbbb::/32") psid_len = 6 for i in range(ip4_pfx.num_addresses): print( "map add domain ip4-pfx " + str(ip4_pfx[i]) + "/32 ip6-pfx ::/0 ip6-src", ip6_src[i], "ea-bits-len 0 psid-offset 6 psid-len", psid_len, ) for psid in range(0x1 << psid_len): print( "map add rule index", i, "psid", psid, "ip6-dst", ip6_dst[(i * (0x1 << psid_len)) + psid], ) # # 1:1 Full IPv4 address # def full11(): ip4_pfx = ipaddress.ip_network("20.0.0.0/16") ip6_src = ipaddress.ip_network("cccc:bbbb::/64") ip6_dst = ipaddress.ip_network("bbbb::/32") psid_len = 0 for i in range(ip4_pfx.num_addresses): print( "map add domain ip4-pfx " + str(ip4_pfx[i]) + "/32 ip6-pfx " + str(ip6_dst[i]) + "/128 ip6-src", ip6_src[i], "ea-bits-len 0 psid-offset 0 psid-len 0", ) def full11br(): ip4_pfx = ipaddress.ip_network("20.0.0.0/16") ip6_dst = ipaddress.ip_network("bbbb::/32") psid_len = 0 for i in range(ip4_pfx.num_addresses): print( "map add domain ip4-pfx " + str(ip4_pfx[i]) + "/32 ip6-pfx " + str(ip6_dst[i]) + "/128 ip6-shared-src cccc:bbbb::1", "ea-bits-len 0 psid-offset 0 psid-len 0", ) # # Algorithmic mapping Shared IPv4 address # def algo(): print( "map add domain ip4-pfx 20.0.0.0/24 ip6-pfx bbbb::/32 ip6-src cccc:bbbb::1 ea-bits-len 16 psid-offset 6 psid-len 8" ) print( "map add domain ip4-pfx 20.0.1.0/24 ip6-pfx bbbb:1::/32 ip6-src cccc:bbbb::2 ea-bits-len 8 psid-offset 0 psid-len 0" ) # # IP4 forwarding # def ip4(): ip4_pfx = ipaddress.ip_network("20.0.0.0/16") for i in range(ip4_pfx.num_addresses): print("ip route add " + str(ip4_pfx[i]) + "/32 via 172.16.0.2") globals()[args.mapmode]()