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Diffstat (limited to 'src/vnet/map/examples/gen-rules.py')
| -rwxr-xr-x | src/vnet/map/examples/gen-rules.py | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/src/vnet/map/examples/gen-rules.py b/src/vnet/map/examples/gen-rules.py new file mode 100755 index 00000000000..7964aa9a359 --- /dev/null +++ b/src/vnet/map/examples/gen-rules.py @@ -0,0 +1,186 @@ +#!/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> + +def_ip4_pfx = '192.0.2.0/24' +def_ip6_pfx = '2001:db8::/32' +def_ip6_src = '2001:db8::1' +def_psid_offset = 6 +def_psid_len = 6 +def_ea_bits_len = 0 + +parser = argparse.ArgumentParser(description='MAP VPP configuration generator') +parser.add_argument('-t', action="store", dest="mapmode") +parser.add_argument('-f', action="store", dest="format", default="vpp") +parser.add_argument('--ip4-prefix', action="store", dest="ip4_pfx", default=def_ip4_pfx) +parser.add_argument('--ip6-prefix', action="store", dest="ip6_pfx", default=def_ip6_pfx) +parser.add_argument('--ip6-src', action="store", dest="ip6_src", default=def_ip6_src) +parser.add_argument('--psid-len', action="store", dest="psid_len", default=def_psid_len) +parser.add_argument('--psid-offset', action="store", dest="psid_offset", default=def_psid_offset) +parser.add_argument('--ea-bits-len', action="store", dest="ea_bits_len", default=def_ea_bits_len) +args = parser.parse_args() + +# +# Print domain +# +def domain_print(i, ip4_pfx, ip6_pfx, ip6_src, eabits_len, psid_offset, psid_len): + if format == 'vpp': + print("map add domain ip4-pfx " + ip4_pfx + " ip6-pfx", ip6_pfx, "ip6-src " + ip6_src + + " ea-bits-len", eabits_len, "psid-offset", psid_offset, "psid-len", psid_len) + if format == 'confd': + print("vpp softwire softwire-instances softwire-instance", i, "br-ipv6 " + ip6_src + + " ipv6-prefix " + ip6_pfx + " ipv4-prefix " + ip4_pfx + + " ea-bits-len", eabits_len, "psid-offset", psid_offset, "psid-len", psid_len) + if format == 'xml': + print("<softwire-instance>") + print("<id>", i, "</id>"); + print(" <br-ipv6>" + ip6_src + "</br-ipv6>") + print(" <ipv6-prefix>" + ip6_pfx + "</ipv6-prefix>") + print(" <ipv4-prefix>" + ip4_pfx + "</ipv4-prefix>") + print(" <ea-len>", eabits_len, "</ea-len>") + print(" <psid-len>", psid_len, "</psid-len>") + print(" <psid-offset>", psid_offset, "</psid-offset>") + +def domain_print_end(): + if format == 'xml': + print("</softwire-instance>") + +def rule_print(i, psid, dst): + if format == 'vpp': + print("map add rule index", i, "psid", psid, "ip6-dst", dst) + if format == 'confd': + print("binding", psid, "ipv6-addr", dst) + if format == 'xml': + print(" <binding>") + print(" <psid>", psid, "</psid>") + print(" <ipv6-addr>", dst, "</ipv6-addr>") + print(" </binding>") + +# +# Algorithmic mapping Shared IPv4 address +# +def algo(ip4_pfx_str, ip6_pfx_str, ip6_src_str, ea_bits_len, psid_offset, psid_len, ip6_src_ecmp = False): + domain_print(0, ip4_pfx_str, ip6_pfx_str, ip6_src_str, ea_bits_len, psid_offset, psid_len) + domain_print_end() + +# +# 1:1 Full IPv4 address +# +def lw46(ip4_pfx_str, ip6_pfx_str, ip6_src_str, ea_bits_len, psid_offset, psid_len, ip6_src_ecmp = False): + ip4_pfx = ipaddress.ip_network(ip4_pfx_str) + ip6_src = ipaddress.ip_address(ip6_src_str) + ip6_dst = ipaddress.ip_network(ip6_pfx_str) + psid_len = 0 + mod = ip4_pfx.num_addresses / 1024 + + for i in range(ip4_pfx.num_addresses): + domain_print(i, str(ip4_pfx[i]) + "/32", str(ip6_dst[i]) + "/128", str(ip6_src), 0, 0, 0) + domain_print_end() + if ip6_src_ecmp and not i % mod: + ip6_src = ip6_src + 1 + +# +# 1:1 Shared IPv4 address, shared BR (16) VPP CLI +# +def lw46_shared(ip4_pfx_str, ip6_pfx_str, ip6_src_str, ea_bits_len, psid_offset, psid_len, ip6_src_ecmp = False): + ip4_pfx = ipaddress.ip_network(ip4_pfx_str) + ip6_src = ipaddress.ip_address(ip6_src_str) + ip6_dst = ipaddress.ip_network(ip6_pfx_str) + mod = ip4_pfx.num_addresses / 1024 + + for i in range(ip4_pfx.num_addresses): + domain_print(i, str(ip4_pfx[i]) + "/32", "::/0", str(ip6_src), 0, 0, psid_len) + for psid in range(0x1 << int(psid_len)): + rule_print(i, psid, str(ip6_dst[(i * (0x1<<int(psid_len))) + psid])) + domain_print_end() + if ip6_src_ecmp and not i % mod: + ip6_src = ip6_src + 1 + + +# +# 1:1 Shared IPv4 address, shared BR +# +def lw46_shared_b(ip4_pfx_str, ip6_pfx_str, ip6_src_str, ea_bits_len, psid_offset, psid_len, ip6_src_ecmp = False): + ip4_pfx = ipaddress.ip_network(ip4_pfx_str) + ip6_src = ipaddress.ip_address(ip6_src_str) + ip6_dst = list(ipaddress.ip_network(ip6_pfx_str).subnets(new_prefix=56)) + mod = ip4_pfx.num_addresses / 1024 + + for i in range(ip4_pfx.num_addresses): + domain_print(i, str(ip4_pfx[i]) + "/32", "::/0", str(ip6_src), 0, 0, psid_len) + for psid in range(0x1 << psid_len): + enduserprefix = list(ip6_dst.pop(0).subnets(new_prefix=64))[255-1] + rule_print(i, psid, enduserprefix[(i * (0x1<<psid_len)) + psid]) + domain_print_end() + if ip6_src_ecmp and not i % mod: + ip6_src = ip6_src + 1 + + +def xml_header_print(): + print(''' +<?xml version="1.0" encoding="UTF-8"?> + <hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"> + <capabilities> + <capability>urn:ietf:params:netconf:base:1.0</capability> + </capabilities> + </hello> +]]>]]> + +<?xml version="1.0" encoding="UTF-8"?> + <rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="1"> + <edit-config> + <target> + <candidate/> + </target> + <config> + + <vpp xmlns="http://www.cisco.com/yang/cisco-vpp"> + <softwire> + <softwire-instances> + + ''') + +def xml_footer_print(): + print(''' +</softwire-instances> +</softwire> +</vpp> + </config> + </edit-config> + </rpc> + +]]>]]> + +<?xml version="1.0" encoding="UTF-8"?> + <rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="2"> + <close-session/> + </rpc> + +]]>]]> + ''') + + +format = args.format +if format == 'xml': + xml_header_print() +globals()[args.mapmode](args.ip4_pfx, args.ip6_pfx, args.ip6_src, args.ea_bits_len, args.psid_offset, args.psid_len) +if format == 'xml': + xml_footer_print() |