3 # Copyright (c) 2015 Cisco and/or its affiliates.
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at:
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
20 # map add domain ip4-pfx <pfx> ip6-pfx ::/0 ip6-src <ip6-src> ea-bits-len 0 psid-offset 6 psid-len 6
21 # map add rule index <0> psid <psid> ip6-dst <ip6-dst>
23 def_ip4_pfx = '192.0.2.0/24'
24 def_ip6_pfx = '2001:db8::/32'
25 def_ip6_src = '2001:db8::1'
30 parser = argparse.ArgumentParser(description='MAP VPP configuration generator')
31 parser.add_argument('-t', action="store", dest="mapmode")
32 parser.add_argument('-f', action="store", dest="format", default="vpp")
33 parser.add_argument('--ip4-prefix', action="store", dest="ip4_pfx", default=def_ip4_pfx)
34 parser.add_argument('--ip6-prefix', action="store", dest="ip6_pfx", default=def_ip6_pfx)
35 parser.add_argument('--ip6-src', action="store", dest="ip6_src", default=def_ip6_src)
36 parser.add_argument('--psid-len', action="store", dest="psid_len", default=def_psid_len)
37 parser.add_argument('--psid-offset', action="store", dest="psid_offset", default=def_psid_offset)
38 parser.add_argument('--ea-bits-len', action="store", dest="ea_bits_len", default=def_ea_bits_len)
39 args = parser.parse_args()
44 def domain_print(i, ip4_pfx, ip6_pfx, ip6_src, eabits_len, psid_offset, psid_len):
46 print("map add domain ip4-pfx " + ip4_pfx + " ip6-pfx", ip6_pfx, "ip6-src " + ip6_src +
47 " ea-bits-len", eabits_len, "psid-offset", psid_offset, "psid-len", psid_len)
49 print("vpp softwire softwire-instances softwire-instance", i, "br-ipv6 " + ip6_src +
50 " ipv6-prefix " + ip6_pfx + " ipv4-prefix " + ip4_pfx +
51 " ea-bits-len", eabits_len, "psid-offset", psid_offset, "psid-len", psid_len)
53 print("<softwire-instance>")
54 print("<id>", i, "</id>");
55 print(" <br-ipv6>" + ip6_src + "</br-ipv6>")
56 print(" <ipv6-prefix>" + ip6_pfx + "</ipv6-prefix>")
57 print(" <ipv4-prefix>" + ip4_pfx + "</ipv4-prefix>")
58 print(" <ea-len>", eabits_len, "</ea-len>")
59 print(" <psid-len>", psid_len, "</psid-len>")
60 print(" <psid-offset>", psid_offset, "</psid-offset>")
62 def domain_print_end():
64 print("</softwire-instance>")
66 def rule_print(i, psid, dst):
68 print("map add rule index", i, "psid", psid, "ip6-dst", dst)
70 print("binding", psid, "ipv6-addr", dst)
73 print(" <psid>", psid, "</psid>")
74 print(" <ipv6-addr>", dst, "</ipv6-addr>")
78 # Algorithmic mapping Shared IPv4 address
80 def algo(ip4_pfx_str, ip6_pfx_str, ip6_src_str, ea_bits_len, psid_offset, psid_len, ip6_src_ecmp = False):
81 domain_print(0, ip4_pfx_str, ip6_pfx_str, ip6_src_str, ea_bits_len, psid_offset, psid_len)
85 # 1:1 Full IPv4 address
87 def lw46(ip4_pfx_str, ip6_pfx_str, ip6_src_str, ea_bits_len, psid_offset, psid_len, ip6_src_ecmp = False):
88 ip4_pfx = ipaddress.ip_network(ip4_pfx_str)
89 ip6_src = ipaddress.ip_address(ip6_src_str)
90 ip6_dst = ipaddress.ip_network(ip6_pfx_str)
92 mod = ip4_pfx.num_addresses / 1024
94 for i in range(ip4_pfx.num_addresses):
95 domain_print(i, str(ip4_pfx[i]) + "/32", str(ip6_dst[i]) + "/128", str(ip6_src), 0, 0, 0)
97 if ip6_src_ecmp and not i % mod:
101 # 1:1 Shared IPv4 address, shared BR (16) VPP CLI
103 def lw46_shared(ip4_pfx_str, ip6_pfx_str, ip6_src_str, ea_bits_len, psid_offset, psid_len, ip6_src_ecmp = False):
104 ip4_pfx = ipaddress.ip_network(ip4_pfx_str)
105 ip6_src = ipaddress.ip_address(ip6_src_str)
106 ip6_dst = ipaddress.ip_network(ip6_pfx_str)
107 mod = ip4_pfx.num_addresses / 1024
109 for i in range(ip4_pfx.num_addresses):
110 domain_print(i, str(ip4_pfx[i]) + "/32", "::/0", str(ip6_src), 0, 0, psid_len)
111 for psid in range(0x1 << int(psid_len)):
112 rule_print(i, psid, str(ip6_dst[(i * (0x1<<int(psid_len))) + psid]))
114 if ip6_src_ecmp and not i % mod:
115 ip6_src = ip6_src + 1
119 # 1:1 Shared IPv4 address, shared BR
121 def lw46_shared_b(ip4_pfx_str, ip6_pfx_str, ip6_src_str, ea_bits_len, psid_offset, psid_len, ip6_src_ecmp = False):
122 ip4_pfx = ipaddress.ip_network(ip4_pfx_str)
123 ip6_src = ipaddress.ip_address(ip6_src_str)
124 ip6_dst = list(ipaddress.ip_network(ip6_pfx_str).subnets(new_prefix=56))
125 mod = ip4_pfx.num_addresses / 1024
127 for i in range(ip4_pfx.num_addresses):
128 domain_print(i, str(ip4_pfx[i]) + "/32", "::/0", str(ip6_src), 0, 0, psid_len)
129 for psid in range(0x1 << psid_len):
130 enduserprefix = list(ip6_dst.pop(0).subnets(new_prefix=64))[255-1]
131 rule_print(i, psid, enduserprefix[(i * (0x1<<psid_len)) + psid])
133 if ip6_src_ecmp and not i % mod:
134 ip6_src = ip6_src + 1
137 def xml_header_print():
139 <?xml version="1.0" encoding="UTF-8"?>
140 <hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
142 <capability>urn:ietf:params:netconf:base:1.0</capability>
147 <?xml version="1.0" encoding="UTF-8"?>
148 <rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="1">
155 <vpp xmlns="http://www.cisco.com/yang/cisco-vpp">
161 def xml_footer_print():
163 </softwire-instances>
172 <?xml version="1.0" encoding="UTF-8"?>
173 <rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="2">
184 globals()[args.mapmode](args.ip4_pfx, args.ip6_pfx, args.ip6_src, args.ea_bits_len, args.psid_offset, args.psid_len)