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#!/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]()
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