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authorOle Troan <ot@cisco.com>2018-06-22 11:32:12 +0200
committerFlorin Coras <florin.coras@gmail.com>2018-06-25 20:19:40 +0000
commit381e9a90748bb659f56081123052e3e95501a4b4 (patch)
treefbc166ecf8637b8b9ea262f3ac4181396149d534 /src/plugins/examples/gen-rules.py
parente4d5a652a392c9f74501da5778a7fe161b183476 (diff)
MAP: Move MAP-E/T to a plugin.
Only remaining traces of MAP in the src/vnet is now in buffer.h. Awaiting a new buffer opaque API (hint, hint). Change-Id: Ie165561484731f1d7ed6e0f604b43624e06db3f0 Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src/plugins/examples/gen-rules.py')
-rwxr-xr-xsrc/plugins/examples/gen-rules.py186
1 files changed, 186 insertions, 0 deletions
diff --git a/src/plugins/examples/gen-rules.py b/src/plugins/examples/gen-rules.py
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+++ b/src/plugins/examples/gen-rules.py
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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>
+
+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()