diff options
| author |   Tetsuya Murakami <tetsuya.mrk@gmail.com> | 2019-11-06 11:05:51 -0800 |
|---|---|---|
| committer |   Ole Trøan <otroan@employees.org> | 2019-11-19 07:02:40 +0000 |
| commit | 1b81e6ef66cbce15ba1b05904732f92251d531cd (patch) | |
| tree | 114135a6f83405d4883bcb37f1c362051944831a | |
| parent | 360b523b52a91bd0d1d7de1247141367c484d70f (diff) | |
srv6-mobile
Type: feature
Plug-in for IPv6 Segment Routing Mobile
This funcion was developed by
Signed-off-by: Satoru Matsuchima <satoru.matsushima@gmail.com>
Signed-off-by: Filip Varga <filipvarga89@gmail.com>
Signed-off-by: Tetsuya Murakami <tetsuya.mrk@gmail.com>
Signed-off-by: Tetsuya Murakami <tetsuya.mrk@gmail.com>
Change-Id: Ie995adc73d8f8d444339aab71619c3599e69f12d
Signed-off-by: Tetsuya Murakami <tetsuya.mrk@gmail.com>
30 files changed, 5340 insertions, 32 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 6e05dfe3590..9ce148d5927 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -413,6 +413,12 @@ I: srv6-as M: Francois Clad <fclad@cisco.com> F: src/plugins/srv6-as/ +Plugin - IPv6 Segment Routing Mobile +I: srv6-mobile +M: Tetsuya Murakami <tetsuya.mrk@gmail.com> +M: Satoru Matsushima <satoru.matsushima@gmail.com> +F: src/plugins/srv6-mobile/ + Plugin - Link Aggregation Control Protocol I: lacp M: Steven Luong <sluong@cisco.com> diff --git a/src/plugins/srv6-ad/ad.c b/src/plugins/srv6-ad/ad.c index 73ea3f6ac1f..1b11037f343 100644 --- a/src/plugins/srv6-ad/ad.c +++ b/src/plugins/srv6-ad/ad.c @@ -425,6 +425,7 @@ srv6_ad_init (vlib_main_t * vm) keyword_str, def_str, params_str, + 128, &sm->srv6_ad_dpo_type, format_srv6_ad_localsid, unformat_srv6_ad_localsid, diff --git a/src/plugins/srv6-ad/node.c b/src/plugins/srv6-ad/node.c index 8f32ae0e49e..dbd68cf4c98 100644 --- a/src/plugins/srv6-ad/node.c +++ b/src/plugins/srv6-ad/node.c @@ -1,4 +1,6 @@ /* + * node.c + * * 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. @@ -12,6 +14,7 @@ * See the License for the specific language governing permissions and * limitations under the License. */ + #include <vlib/vlib.h> #include <vnet/vnet.h> #include <vppinfra/error.h> @@ -705,9 +708,9 @@ VLIB_REGISTER_NODE (srv6_ad6_rewrite_node) = { /* *INDENT-ON* */ /* -* fd.io coding-style-patch-verification: ON -* -* Local Variables: -* eval: (c-set-style "gnu") -* End: + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: */ diff --git a/src/plugins/srv6-am/am.c b/src/plugins/srv6-am/am.c index 2507a75dce8..1408ebc470b 100644 --- a/src/plugins/srv6-am/am.c +++ b/src/plugins/srv6-am/am.c @@ -212,6 +212,7 @@ srv6_am_init (vlib_main_t * vm) keyword_str, def_str, params_str, + 128, &sm->srv6_am_dpo_type, format_srv6_am_localsid, unformat_srv6_am_localsid, diff --git a/src/plugins/srv6-as/as.c b/src/plugins/srv6-as/as.c index 99e68511f32..cb95991cdda 100644 --- a/src/plugins/srv6-as/as.c +++ b/src/plugins/srv6-as/as.c @@ -535,6 +535,7 @@ srv6_as_init (vlib_main_t * vm) keyword_str, def_str, params_str, + 128, &sm->srv6_as_dpo_type, format_srv6_as_localsid, unformat_srv6_as_localsid, diff --git a/src/plugins/srv6-mobile/CMakeLists.txt b/src/plugins/srv6-mobile/CMakeLists.txt new file mode 100644 index 00000000000..612d626df91 --- /dev/null +++ b/src/plugins/srv6-mobile/CMakeLists.txt @@ -0,0 +1,24 @@ +# Copyright (c) 2019 Arrcus Inc 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. + +add_vpp_plugin(srv6mobile + SOURCES + gtp4_e.c + gtp6_e.c + gtp6_d.c + gtp6_d_di.c + node.c + + INSTALL_HEADERS + mobile.h +) diff --git a/src/plugins/srv6-mobile/FEATURE.yaml b/src/plugins/srv6-mobile/FEATURE.yaml new file mode 100644 index 00000000000..6d5cf104bc4 --- /dev/null +++ b/src/plugins/srv6-mobile/FEATURE.yaml @@ -0,0 +1,12 @@ +name: SRv6 Mobuile +maintainer: Tetsuya Murakami <tetsuya.mrk@gmail.com> +features: + - GTP4.D + - GTP4.E + - GTP6.D + - GTP6.D.Di + - GTP6.E +description: "SRv6 Mobile End Functions. GTP4.D, GTP4.E, + GTP6.D, GTP6.D.Di and GTP6.E are supported." +state: production +properties: [API, CLI, MULTITHREAD] diff --git a/src/plugins/srv6-mobile/README.md b/src/plugins/srv6-mobile/README.md new file mode 100644 index 00000000000..18628806cbc --- /dev/null +++ b/src/plugins/srv6-mobile/README.md @@ -0,0 +1,178 @@ +SRv6 Mobile User Plane Plugin for VPP +======================== + +## Introduction + +This plugin module can provide the stateless mobile user plane protocols translation between GTP-U and SRv6. +The functions of the translation take advantage of SRv6 network programmability. +[SRv6 Mobile User Plane](https://tools.ietf.org/html/draft-ietf-dmm-srv6-mobile-uplane) defines the user plane protocol using SRv6 +including following stateless translation functions: + +- **T.M.GTP4.D:** + GTP-U over UDP/IPv4 -> SRv6 +- **End.M.GTP4.E:** + SRv6 -> GTP-U over UDP/IPv4 +- **End.M.GTP6.D:** + GTP-U over UDP/IPv6 -> SRv6 +- **End.M.GTP6.E:** + SRv6 -> GTP-U over UDP/IPv6 + +These functions benefit user plane(overlay) to be able to utilize data plane(underlay) networks properly. And also it benefits +data plane to be able to handle user plane in routing paradigm. + +## Getting started +To play with SRv6 Mobile User Plane on VPP, you need to install following packages: + + docker + python3 + pip3 + + Python packages (use pip): + docker + scapy + jinja2 + + +### Quick-start + +1. Build up the docker container image as following: + +``` +$ git clone https://github.com/filvarga/srv6-mobile.git +$ cd ./srv6-mobile/extras/ietf105 +$ ./runner.py infra build + +$ docker images +REPOSITORY TAG IMAGE ID CREATED SIZE +ietf105-image latest 577e786b7ec6 2 days ago 5.57GB +ubuntu 18.04 4c108a37151f 4 weeks ago 64.2MB + +``` + +The runner script [runner.py](test/runner.py) has features to automate configurations and procedures for the test. + +2. Instantiate test Scenario + +Let's try following command to instantiate a topology: + +``` +$ ./runner.py infra start +``` + +This command instantiates 4 VPP containers with following topology: + + + +You can check the instantiated docker instances with "docker ps". + + +``` +$ docker ps +CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES +44cb98994500 ietf105-image "/bin/sh -c 'vpp -c …" About a minute ago Up About a minute hck-vpp-4 +6d65fff8aee9 ietf105-image "/bin/sh -c 'vpp -c …" About a minute ago Up About a minute hck-vpp-3 +ad123b516b24 ietf105-image "/bin/sh -c 'vpp -c …" About a minute ago Up About a minute hck-vpp-2 +5efed405b96a ietf105-image "/bin/sh -c 'vpp -c …" About a minute ago Up About a minute hck-vpp-1 + +``` + +You can login to and configure each instantiated container. + +``` +$ ./runner.py cmd vppctl 0 + +Verified image: None +connecting to: hck-vpp-1 + _______ _ _ _____ ___ + __/ __/ _ \ (_)__ | | / / _ \/ _ \ + _/ _// // / / / _ \ | |/ / ___/ ___/ + /_/ /____(_)_/\___/ |___/_/ /_/ + +vpp# +``` + +## Test Scenarios +### SRv6 Drop-in between GTP-U tunnel + +This test scenario introduces SRv6 path between GTP-U tunnel transparently. A GTP-U packet sent out from one end to another is translated to SRv6 and then back to GTP-U. All GTP-U tunnel identifiers are preserved in IPv6 header and SRH. + + +#### GTP-U over UDP/IPv4 case + +This case uses SRv6 end functions, T.M.GTP4.D and End.M.GTP4.E. + + + +VPP1 is configured with "T.M.GTP4.D", and VPP4 is configured with "End.M.GTP4.E". Others are configured with "End". The packet generator sends a GTP-U packet over UDP/IPv4 toward the packet capture. VPP1 translates it to SRv6 toward D4::TEID with SR policy <D2::, D3::> in SRH. VPP4 translates the SRv6 packet to the original GTP-U packet and send out to the packet capture. + +To start this case with IPv4 payload over GTP-U, you can run: + +``` +$ ./runner.py test tmap +``` + +If you want to use IPv6 payload instead of IPv4, you can run: + +``` +$ ./runner.py test tmap_ipv6 +``` + + +#### GTP-U over UDP/IPv6 case + +This case uses SRv6 end functions, End.M.GTP6.D.Di and End.M.GTP6.E. + + + +VPP1 is configured with "End.M.GTP6.D.Di", and VPP4 is configured with "End.M.GTP4.E". Others are configured with "End". The packet generator sends a GTP-U packet over UDP/IPv6 toward D:: of the packet capture. VPP1 translates it to SRv6 toward D:: with SR policy <D2::, D3::, D4::TEID> in SRH. VPP4 translates the SRv6 packet to the original GTP-U packet and send out to the packet capture. + +To start this case with IPv4 payload over GTP-U, you can run: + +``` +$ ./runner.py test gtp6_drop_in +``` + +If you want to use IPv6 payload instead of IPv4, you can run: + +``` +$ ./runner.py test gtp6_drop_in_ipv6 +``` + + +### GTP-U to SRv6 + +This test scenario demonstrates GTP-U to SRv6 translation. A GTP-U packet sent out from one end to another is translated to SRv6. + +#### GTP-U over UDP/IPv6 case + +##### IPv4 payload + +This case uses SRv6 end functions, End.M.GTP6.D and End.DT4. + + + +VPP1 is configured with "End.M.GTP6.D", and VPP4 is configured with "End.DT4". Others are configured with "End". The packet generator sends a GTP-U packet over UDP/IPv6 toward D::2. VPP1 translates it to SRv6 toward the IPv6 destination consists of D4:: and TEID of GTP-U with SR policy <D2::, D3::> in SRH. VPP4 decapsulates the SRv6 packet and lookup the table for the inner IPv4 packet and send out to the packet capture. + +To start this case, you can run: + +``` +$ ./runner.py test gtp6 +``` + +##### IPv6 payload + +This case uses SRv6 end functions, End.M.GTP6.D and End.DT6. + + + + +The configurations are same with IPv4 payload case, except D4:: is configured as "End.DT6" in VPP4. VPP4 decapsulates the SRv6 packet and lookup the table for the inner IPv6 packet and send out to the packet capture. + +If you want to use IPv6 payload instead of IPv4, you can run: + +``` +$ ./runner.py test gtp6_ipv6 +``` + +## More information +TBD diff --git a/src/plugins/srv6-mobile/extra/Dockerfile.j2 b/src/plugins/srv6-mobile/extra/Dockerfile.j2 new file mode 100644 index 00000000000..ac58fa36b64 --- /dev/null +++ b/src/plugins/srv6-mobile/extra/Dockerfile.j2 @@ -0,0 +1,48 @@ + +FROM ubuntu:18.04 + +RUN set -eux; \ + apt-get update; \ + apt-get install -y --no-install-recommends \ + inetutils-traceroute \ + ca-certificates \ + build-essential \ + git gdb sudo \ + iputils-ping \ + net-tools \ + iproute2 \ + tcpdump \ + python3-cffi \ + asciidoc \ + xmlto \ + netcat; \ + rm -rf /var/lib/apt/lists/*; \ + mv /usr/sbin/tcpdump /usr/bin/tcpdump + +RUN set -eux; \ + mkdir -p {{vpp_path}} + +COPY . / {{vpp_path}}/ + +WORKDIR {{vpp_path}} + +RUN set -eux; \ + make wipe; \ + export UNATTENDED=y; \ + echo "y" | make install-dep; \ + rm -rf /var/lib/apt/lists/* ; \ + make build; \ + make pkg-deb; \ + rm -rf .ccache; \ + find . -type f -name '*.o' -delete ; \ + cd {{vpp_path}}/build-root; \ + rm vpp-api-python_*.deb; \ + tar czf vpp-package.tgz *.deb; \ + mv vpp-package.tgz {{vpp_path}}/; \ + dpkg -i *.deb ; \ + cp {{vpp_path}}/startup.conf /etc/startup.conf + +WORKDIR / + +CMD vpp -c /etc/startup.conf + diff --git a/src/plugins/srv6-mobile/extra/Dockerfile.j2.release b/src/plugins/srv6-mobile/extra/Dockerfile.j2.release new file mode 100644 index 00000000000..851aef66197 --- /dev/null +++ b/src/plugins/srv6-mobile/extra/Dockerfile.j2.release @@ -0,0 +1,37 @@ + +FROM ubuntu:18.04 + +RUN set -eux; \ + apt-get update; \ + apt-get install -y --no-install-recommends \ + inetutils-traceroute \ + ca-certificates \ + libmbedcrypto1 \ + libmbedtls10 \ + libmbedx509-0 \ + libnuma1 \ + sudo \ + iputils-ping \ + net-tools \ + iproute2 \ + tcpdump \ + python3-cffi \ + netcat; \ + rm -rf /var/lib/apt/lists/*; \ + mv /usr/sbin/tcpdump /usr/bin/tcpdump + +WORKDIR /tmp + +COPY startup.conf /etc/startup.conf + +COPY vpp-package.tgz /tmp + +RUN set -eux; \ + tar xzf vpp-package.tgz; \ + dpkg -i *.deb ; \ + rm -rf *.deb + +WORKDIR / + +CMD vpp -c /etc/startup.conf + diff --git a/src/plugins/srv6-mobile/extra/README.md b/src/plugins/srv6-mobile/extra/README.md new file mode 100644 index 00000000000..3b24dea6fd6 --- /dev/null +++ b/src/plugins/srv6-mobile/extra/README.md @@ -0,0 +1,173 @@ +# What's `runner.py` doing? + +## Common configurations + +### VPP1 +``` +create host-interface name eth1 +set int ip addr host-eth1 A1::1/120 +set int state host-eth1 up +ip route add ::/0 via host-eth1 A1::2 +``` + + +### VPP2 + +``` +create host-interface name eth1 +set int ip addr host-eth1 A1::2/120 +create host-interface name eth2 +set int ip addr host-eth2 A2::1/120 +set int state host-eth1 up +set int state host-eth2 up +ip route add ::/0 via host-eth2 A2::2 +``` + + +### VPP3 + +``` +create host-interface name eth1 +set int ip addr host-eth1 A2::2/120 +create host-interface name eth2 +set int ip addr host-eth2 A3::1/120 +set int state host-eth1 up +set int state host-eth2 up +ip route add ::/0 via host-eth1 A2::1 +``` + +### VPP4 + +``` +create host-interface name eth1 +set int ip addr host-eth1 A3::2/120 +set int state host-eth1 up +ip route add ::/0 via host-eth1 A3::1 +``` + + +## Drop-in for GTP-U over IPv4 + +What's happened when you run `test tmap`: + + $ ./runner.py test tmap + + +Setting up a virtual interface of packet generator: + +#### VPP1 + +``` +create packet-generator interface pg0 +set int mac address pg0 aa:bb:cc:dd:ee:01 +set int ip addr pg0 172.16.0.1/30 +set ip arp pg0 172.16.0.2/30 aa:bb:cc:dd:ee:02 +``` + +#### VPP4 + +``` +create packet-generator interface pg0 +set int mac address pg0 aa:bb:cc:dd:ee:11 +set int ip addr pg0 1.0.0.2/30 +set ip arp pg0 1.0.0.1 aa:bb:cc:dd:ee:22 +``` + +SRv6 and IP routing settings: + +#### VPP1 + +``` +sr policy add bsid D1:: next D2:: next D3:: gtp4_removal sr_prefix D4::/32 v6src_prefix C1::/64 +sr steer l3 172.20.0.1/32 via bsid D1:: + +``` + +#### VPP2 + +``` +sr localsid address D2:: behavior end +ip route add D3::/128 via host-eth2 A2::2 +``` + +#### VPP3 + +``` +sr localsid address D3:: behavior end +ip route add D4::/32 via host-eth2 A3::2 +``` + +#### VPP4 + +``` +sr localsid prefix D4::/32 behavior end.m.gtp4.e v4src_position 64 +ip route add 172.20.0.1/32 via pg0 1.0.0.1 +``` + + + + +## Packet generator and testing + + Example how to build custom SRv6 packet in scapy and ipaddress pkgs + + s = '\x11' * 4 + IPv4Address(u"192.168.192.10").packed + '\x11' * 8 + ip6 = IPv6Address(s) + IPv6(dst=ip6, src=ip6) + + +## end.m.gtp4.e + + First set behavior so our localsid node is called with the packet + matching C1::1 in fib table + sr localsid address C1::1 behavior end.m.gtp4.ess + + show sr localsids behaviors + show sr localsid + + We should send a well formated packet to C::1 destination address + that contains the correct spec as for end.m.gtp4.e with encapsulated + ipv4 src and dst address and teid with port for the conversion to + GTPU IPv4 packet + + +## additional commands + + gdb - breakpoint + + break sr_policy_rewrite.c:1620 + + break src/plugins/srv6-end/node.c:84 + + TMAP + Linux: + + ip link add tmp1 type veth peer name tmp2 + ip link set dev tmp1 up + ip link set dev tmp2 up + ip addr add 172.20.0.2/24 dev tmp2 + + create host-interface name tmp1 + set int mac address host-tmp1 02:fe:98:c6:c8:7b + set interface ip address host-tmp1 172.20.0.1/24 + set interface state host-tmp1 up + + VPP + set sr encaps source addr C1:: + sr policy add bsid D1::999:2 next D2:: next D3:: gtp4_removal sr-prefix fc34:5678::/64 local-prefix C1::/64 + sr steer l3 172.21.0.0/24 via bsid d1::999:2 + + END + Linux + create host-interface name tmp1 + set int mac address host-tmp1 02:fe:98:c6:c8:7b + set interface ip address host-tmp1 A1::1/64 + set interface state host-tmp1 up + + VPP + sr localsid address 1111:1111:c0a8:c00a:1122:1111:1111:1111 behavior end.m.gtp4.e + + trace add af-packet-input 10 + + sr localsid address C3:: behavior end.m.gtp4.e + sr localsid address 2001:200:0:1ce1:3000:757f:0:2 behavior end.m.gtp4.e diff --git a/src/plugins/srv6-mobile/extra/requirements.txt b/src/plugins/srv6-mobile/extra/requirements.txt new file mode 100644 index 00000000000..2938cddeceb --- /dev/null +++ b/src/plugins/srv6-mobile/extra/requirements.txt @@ -0,0 +1,3 @@ +docker +jinja2 +scapy diff --git a/src/plugins/srv6-mobile/extra/runner.py b/src/plugins/srv6-mobile/extra/runner.py new file mode 100755 index 00000000000..710252d5ce1 --- /dev/null +++ b/src/plugins/srv6-mobile/extra/runner.py @@ -0,0 +1,2046 @@ +#!/usr/bin/env python3 + +from os.path import dirname, realpath, split,\ + join, isdir, exists +from os import remove, system, mkdir +from logging import getLogger, basicConfig,\ + DEBUG, INFO, ERROR +from argparse import ArgumentParser +from atexit import register +from shutil import rmtree + +from jinja2 import Environment, FileSystemLoader + +from docker.errors import NotFound, APIError +from docker import from_env + +from scapy.contrib.gtp import * +from scapy.all import * + + +verbose_levels = { + 'error': ERROR, + 'debug': DEBUG, + 'info': INFO} + + +class ContainerStartupError(Exception): + pass + + +class Container(object): + + tmp = "/tmp" + cmd = "vppctl -s 0:5002" + cmd_bash = "/bin/bash" + + def __init__(self, ref, name): + self._name = name + self._ref = ref + + @property + def name(self): + return self._name + + @property + def temp(self): + return join(self.tmp, self.name) + + @property + def pg_input_file(self): + return join(self.temp, "pgi.pcap") + + @property + def pg_output_file(self): + return join(self.temp, "pgo.pcap") + + @property + def pg_input_file_in(self): + return join("/mnt", "pgi.pcap") + + @property + def pg_output_file_in(self): + return join("/mnt", "pgo.pcap") + + def disconnect_all(self): + status = False + for net in self._ref.client.networks.list(): + try: + net.disconnect(self._ref) + except APIError: + continue + status = True + return status + + @classmethod + def new(cls, client, image, name): + + temp = join(cls.tmp, name) + if isdir(temp): + rmtree(temp) + mkdir(temp) + + ref = client.containers.run( + detach=True, + remove=True, + auto_remove=True, + image=image, + name=name, + privileged=True, + volumes={ + temp: { + 'bind': '/mnt', + 'mode': 'rw'}}) + + obj = cls.get(client, name) + if not obj: + raise ContainerStartupError() + + obj.disconnect_all() + return obj + + @classmethod + def get(cls, client, name): + try: + ref = client.containers.get(name) + except NotFound: + pass + else: + return cls(ref, name) + + def rem(self): + self._ref.kill() + + def vppctl(self): + system("docker exec -it {} {}".format(self.name, self.cmd)) + + def bash(self): + system("docker exec -it {} {}".format(self.name, self.cmd_bash)) + + def vppctl_exec(self, cmd): + ec, resp = self._ref.exec_run(cmd="{} {}".format(self.cmd, cmd)) + assert(ec == 0) + return resp + + def setup_host_interface(self, name, ip): + self.vppctl_exec("create host-interface name {}".format(name)) + self.vppctl_exec("set int ip addr host-{} {}".format(name, ip)) + self.vppctl_exec("set int state host-{} up".format(name)) + + def pg_create_interface(self, local_ip, remote_ip, local_mac, remote_mac): + # remote_ip can't have subnet mask + + time.sleep(2) + self.vppctl_exec("create packet-generator interface pg0") + self.vppctl_exec("set int mac address pg0 {}".format(local_mac)) + self.vppctl_exec("set int ip addr pg0 {}".format(local_ip)) + self.vppctl_exec( + "set ip6 neighbor pg0 {} {}".format(remote_ip, remote_mac)) + self.vppctl_exec("set int state pg0 up") + + def pg_create_interface4(self, local_ip, remote_ip, local_mac, remote_mac): + # remote_ip can't have subnet mask + + time.sleep(2) + self.vppctl_exec("create packet-generator interface pg0") + self.vppctl_exec("set int mac address pg0 {}".format(local_mac)) + self.vppctl_exec("set int ip addr pg0 {}".format(local_ip)) + self.vppctl_exec("set ip arp pg0 {} {}".format(remote_ip, remote_mac)) + self.vppctl_exec("set int state pg0 up") + + def pg_create_interface6(self, local_ip, remote_ip, local_mac, remote_mac): + # remote_ip can't have subnet mask + + time.sleep(2) + self.vppctl_exec("create packet-generator interface pg0") + self.vppctl_exec("set int mac address pg0 {}".format(local_mac)) + self.vppctl_exec("set int ip6 addr pg0 {}".format(local_ip)) + self.vppctl_exec("set ip6 arp pg0 {} {}".format(remote_ip, remote_mac)) + self.vppctl_exec("set int state pg0 up") + + def pg_enable(self): + # start packet generator + self.vppctl_exec("packet-generator enable") + + def pg_create_stream(self, stream): + wrpcap(self.pg_input_file, stream) + self.vppctl_exec( + "packet-generator new name pg-stream " + "node ethernet-input pcap {}".format( + self.pg_input_file_in)) + + def pg_start_capture(self): + if exists(self.pg_output_file): + remove(self.pg_output_file) + self.vppctl_exec( + "packet-generator capture pg0 pcap {}".format( + self.pg_output_file_in)) + + def pg_read_packets(self): + return rdpcap(self.pg_output_file) + + def set_ipv6_route(self, out_if_name, next_hop_ip, subnet): + self.vppctl_exec( + "ip route add {} via host-{} {}".format( + subnet, out_if_name, next_hop_ip)) + + def set_ip_pgroute(self, out_if_name, next_hop_ip, subnet): + self.vppctl_exec("ip route add {} via {} {}".format( + subnet, out_if_name, next_hop_ip)) + + def set_ipv6_pgroute(self, out_if_name, next_hop_ip, subnet): + self.vppctl_exec("ip route add {} via {} {}".format( + subnet, out_if_name, next_hop_ip)) + + def set_ipv6_default_route(self, out_if_name, next_hop_ip): + self.vppctl_exec( + "ip route add ::/0 via host-{} {}".format( + out_if_name, next_hop_ip)) + + def enable_trace(self, count): + self.vppctl_exec("trace add af-packet-input {}".format(count)) + + +class Containers(object): + + def __init__(self, client, image): + self.client = client + self.image = image + + def tmp_render(self, path, template, kwargs): + + with open(path, "w") as fo: + fo.write(template.render(**kwargs)) + + register(lambda: remove(path)) + + def build(self, path, vpp_path): + env = Environment(loader=FileSystemLoader(path), + trim_blocks=True) + + self.tmp_render(join(vpp_path, "Dockerfile"), + env.get_template("Dockerfile.j2"), + {'vpp_path': vpp_path}) + + self.tmp_render(join(vpp_path, "startup.conf"), + env.get_template("startup.conf.j2"), + {'vpp_path': vpp_path}) + + ref, _ = self.client.images.build(path=vpp_path, + tag=self.image, rm=True) + return ref + + def release(self, path, vpp_path): + env = Environment(loader=FileSystemLoader(path), + trim_blocks=True) + + self.tmp_render(join(vpp_path, "Dockerfile"), + env.get_template("Dockerfile.j2.release"), + {'vpp_path': vpp_path}) + + self.tmp_render(join(vpp_path, "startup.conf"), + env.get_template("startup.conf.j2"), + {'vpp_path': vpp_path}) + + ref, _ = self.client.images.build(path=vpp_path, + tag="srv6m-release-image", rm=True) + return ref + + def new(self, name): + return Container.new(self.client, self.image, name) + + def get(self, name): + return Container.get(self.client, name) + + def vppctl(self, name, command=None): + container = self.get(name) + if not command: + container.vppctl() + else: + print(container.vppctl_exec(command).decode()) + + def bash(self, name): + container = self.get(name) + container.bash() + + +class Network(object): + + def __init__(self, ref, name): + self._name = name + self._ref = ref + + @property + def name(self): + return self._name + + @classmethod + def new(cls, client, name): + ref = client.networks.create(name, driver="bridge", + check_duplicate=True) + return cls(ref, name) + + @classmethod + def get(cls, client, name): + try: + ref = client.networks.get(name) + except NotFound: + pass + else: + return cls(ref, name) + + def rem(self): + self._ref.remove() + + def connect(self, c): + self._ref.connect(c.name) + + +class Networks(object): + + def __init__(self, client): + self.client = client + + def new(self, name): + return Network.new(self.client, name) + + def get(self, name): + return Network.get(self.client, name) + + +class Program(object): + + image = "srv6m-image" + + name_prefix = "hck" + + # TODO: add description to these instances + # for exmaple what the vpp is supposed to be + # in our topoloty overview + + instance_names = ["vpp-1", + "vpp-2", + "vpp-3", + "vpp-4"] + + network_names = ["net-1", + "net-2", + "net-3"] + + def __init__(self, image=None, prefix=None): + self.path = dirname(realpath(__file__)) + + if image: + self.image = image + if prefix is not None: + self.name_prefix = prefix + + client = from_env() + self.containers = Containers(client, self.image) + self.networks = Networks(client) + + self.logger = getLogger(__name__) + + @property + def vpp_path(self): + return self.path.rsplit("/", 4)[0] + + def get_name(self, name): + if not self.name_prefix: + return name + return "{}-{}".format(self.name_prefix, name) + + def stop_containers(self): + + for name in self.instance_names: + instance = self.containers.get(self.get_name(name)) + if instance: + instance.rem() + + for name in self.network_names: + network = self.networks.get(self.get_name(name)) + if network: + network.rem() + + def start_containers(self): + + self.stop_containers() + + networks = list() + + for name in self.network_names: + networks.append(self.networks.new(self.get_name(name))) + + n1, n2, n3 = networks + + instances = list() + + for name in self.instance_names: + instances.append(self.containers.new(self.get_name(name))) + + c1, c2, c3, c4 = instances + + # setup packet generator interfaces + # c1.pg_create_interface(local_ip="C::1/120", remote_ip="C::2", + # local_mac="aa:bb:cc:dd:ee:01", remote_mac="aa:bb:cc:dd:ee:02") + + # setup network between instances + n1.connect(c1) + n1.connect(c2) + + n2.connect(c2) + n2.connect(c3) + + n3.connect(c3) + n3.connect(c4) + + # c1 & c2 link + c1.setup_host_interface("eth1", "A1::1/120") + c2.setup_host_interface("eth1", "A1::2/120") + + # c2 & c3 link + c2.setup_host_interface("eth2", "A2::1/120") + c3.setup_host_interface("eth1", "A2::2/120") + + # c3 & c4 link + c3.setup_host_interface("eth2", "A3::1/120") + c4.setup_host_interface("eth1", "A3::2/120") + + # c1 > c2 default route + + c1.set_ipv6_default_route("eth1", "A1::2") + # c2 > c3 default route + c2.set_ipv6_default_route("eth2", "A2::2") + # c3 > c2 default route + c3.set_ipv6_default_route("eth1", "A2::1") + # c4 > c3 default route + c4.set_ipv6_default_route("eth1", "A3::1") + + # c3 > c4 static route for address B::1/128 + c3.set_ipv6_route("eth2", "A3::2", "B::1/128") + c3.set_ipv6_route("eth2", "A3::2", "B::2/128") + + def test_ping(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface( + local_ip="B::1/120", + remote_ip="B::2", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="B::2") / ICMPv6EchoRequest()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_srv6(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 C::1/120 + # pg interface on c4 B::1/120 + + self.start_containers() + + print("Sleeping") + time.sleep(30) + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface( + local_ip="B::1/120", + remote_ip="B::2", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr D1::") + c1.vppctl_exec( + "sr policy add bsid D1::999:1 next D2:: next D3:: next D4::") + c1.vppctl_exec("sr steer l3 B::/120 via bsid D1::999:1") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec("sr localsid address D4:: behavior end.dx6 pg0 B::2") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/128") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="B::2") / ICMPv6EchoRequest()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c2.enable_trace(10) + c3.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_tmap(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface4( + local_ip="172.16.0.1/30", + remote_ip="172.16.0.2/30", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec( + "sr policy add bsid D1:: next D2:: next D3:: " + "gtp4_removal sr_prefix D4::/32 v6src_prefix C1::/64") + c1.vppctl_exec("sr steer l3 172.20.0.1/32 via bsid D1::") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec( + "sr localsid prefix D4::/32 " + "behavior end.m.gtp4.e v4src_position 64") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.20.0.1/32") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IP(src="172.20.0.2", dst="172.20.0.1") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + IP(src="172.99.0.1", dst="172.99.0.2") / + ICMP()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_tmap_5g(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface4( + local_ip="172.16.0.1/30", + remote_ip="172.16.0.2/30", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec( + "sr policy add bsid D1:: next D2:: next D3:: " + "gtp4_removal sr_prefix D4::/32 v6src_prefix C1::/64") + c1.vppctl_exec("sr steer l3 172.20.0.1/32 via bsid D1::") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec( + "sr localsid prefix D4::/32 " + "behavior end.m.gtp4.e v4src_position 64") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.20.0.1/32") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IP(src="172.20.0.2", dst="172.20.0.1") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + GTPPDUSessionContainer(R=1, QFI=3) / + IP(src="172.99.0.1", dst="172.99.0.2") / + ICMP()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_tmap_ipv6(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface4( + local_ip="172.16.0.1/30", + remote_ip="172.16.0.2/30", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec( + "sr policy add bsid D1:: next D2:: next D3:: " + "gtp4_removal sr_prefix D4::/32 v6src_prefix C1::/64") + c1.vppctl_exec("sr steer l3 172.20.0.1/32 via bsid D1::") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec( + "sr localsid prefix D4::/32 " + "behavior end.m.gtp4.e v4src_position 64") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.20.0.1/32") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IP(src="172.20.0.2", dst="172.20.0.1") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + IPv6(src="2001::1", dst="2002::1") / + ICMPv6EchoRequest()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_tmap_ipv6_5g(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface4( + local_ip="172.16.0.1/30", + remote_ip="172.16.0.2/30", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec( + "sr policy add bsid D1:: next D2:: next D3:: " + "gtp4_removal sr_prefix D4::/32 v6src_prefix C1::/64") + c1.vppctl_exec("sr steer l3 172.20.0.1/32 via bsid D1::") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec( + "sr localsid prefix D4::/32 " + "behavior end.m.gtp4.e v4src_position 64") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.20.0.1/32") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IP(src="172.20.0.2", dst="172.20.0.1") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + GTPPDUSessionContainer(R=1, QFI=3) / + IPv6(src="2001::1", dst="2002::1") / + ICMPv6EchoRequest()) + + print("Sending packet on {}:".format(c1.name)) + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp4(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface4( + local_ip="172.16.0.1/30", + remote_ip="172.16.0.2/30", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + c1.vppctl_exec( + "sr localsid prefix 172.20.0.1/32 " + "behavior end.m.gtp4.d D4::/32 v6src_prefix C1::/64 nhtype ipv4") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec( + "sr localsid prefix D4::/32 " + "behavior end.m.gtp4.e v4src_position 64") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.20.0.1/32") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IP(src="172.20.0.2", dst="172.20.0.1") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + IP(src="172.99.0.1", dst="172.99.0.2") / + ICMP()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp4_5g(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface4( + local_ip="172.16.0.1/30", + remote_ip="172.16.0.2/30", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + c1.vppctl_exec( + "sr localsid prefix ::ffff:ac14:0001/128 " + "behavior end.m.gtp4.d D4::/32 v6src_prefix C1::/64 " + "nhtype ipv4") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec( + "sr localsid prefix D4::/32 " + "behavior end.m.gtp4.e v4src_position 64") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.20.0.1/32") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IP(src="172.20.0.2", dst="172.20.0.1") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + GTPPDUSessionContainer(type=1, R=1, QFI=3) / + IP(src="172.99.0.1", dst="172.99.0.2") / + ICMP()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp4_echo(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface4( + local_ip="172.16.0.1/30", + remote_ip="172.16.0.2/30", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + c1.vppctl_exec( + "sr localsid prefix 172.20.0.1/32 " + "behavior end.m.gtp4.d D4::/32 v6src_prefix C1::/64 " + "nhtype ipv4") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec( + "sr localsid prefix D4::/32 " + "behavior end.m.gtp4.e v4src_position 64") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.20.0.1/32") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IP(src="172.20.0.2", dst="172.20.0.1") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="echo_request", teid=200)) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp4_ipv6(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface4( + local_ip="172.16.0.1/30", + remote_ip="172.16.0.2/30", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + c1.vppctl_exec( + "sr localsid prefix ::ffff:ac14:0001/128 " + "behavior end.m.gtp4.d D4::/32 v6src_prefix C1::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec( + "sr localsid prefix D4::/32 " + "behavior end.m.gtp4.e v4src_position 64") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.20.0.1/32") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IP(src="172.20.0.2", dst="172.20.0.1") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + IPv6(src="2001::1", dst="2002::1") / + ICMPv6EchoRequest()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp4_ipv6_5g(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface4( + local_ip="172.16.0.1/30", + remote_ip="172.16.0.2/30", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + c1.vppctl_exec( + "sr localsid prefix ::ffff:ac14:0001/128 " + "behavior end.m.gtp4.d D4::/32 v6src_prefix C1::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec( + "sr localsid prefix D4::/32 " + "behavior end.m.gtp4.e v4src_position 64") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.20.0.1/32") + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IP(src="172.20.0.2", dst="172.20.0.1") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + GTPPDUSessionContainer(R=1, QFI=3) / + IPv6(src="2001::1", dst="2002::1") / + ICMPv6EchoRequest()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp6_drop_in(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + print("Deleting the old containers...") + time.sleep(30) + print("Starting the new containers...") + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface( + local_ip="B::1/120", + remote_ip="B::2", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + + c1.vppctl_exec( + "sr localsid prefix D::/64 behavior end.m.gtp6.d.di D4::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec("sr localsid prefix D4::/64 behavior end.m.gtp6.e") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "B::2", "D::2/128") + + print("Waiting...") + time.sleep(30) + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="D::2") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + IP(src="172.99.0.1", dst="172.99.0.2") / + ICMP()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp6_drop_in_5g(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + print("Deleting the old containers...") + time.sleep(30) + print("Starting the new containers...") + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface( + local_ip="B::1/120", + remote_ip="B::2", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + + c1.vppctl_exec( + "sr localsid prefix D::/64 behavior end.m.gtp6.d.di D4::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec("sr localsid prefix D4::/64 behavior end.m.gtp6.e") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "B::2", "D::2/128") + + print("Waiting...") + time.sleep(30) + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="D::2") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + GTPPDUSessionContainer(type=1, R=1, QFI=3) / + IP(src="172.99.0.1", dst="172.99.0.2") / + ICMP()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp6_drop_in_echo(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + print("Deleting the old containers...") + time.sleep(30) + print("Starting the new containers...") + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface( + local_ip="B::1/120", + remote_ip="B::2", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + + c1.vppctl_exec( + "sr localsid prefix D::/64 behavior end.m.gtp6.d.di D4::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec("sr localsid prefix D4::/64 behavior end.m.gtp6.e") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "B::2", "D::2/128") + + print("Waiting...") + time.sleep(30) + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="D::2") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="echo_request", teid=200)) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp6_drop_in_ipv6(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + print("Deleting the old containers...") + time.sleep(30) + print("Starting the new containers...") + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface( + local_ip="B::1/120", + remote_ip="B::2", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + + c1.vppctl_exec( + "sr localsid prefix D::/64 behavior end.m.gtp6.d.di D4::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec("sr localsid prefix D4::/64 behavior end.m.gtp6.e") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "B::2", "D::2/128") + + print("Waiting...") + time.sleep(30) + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="D::2") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + IPv6(src="2001::1", dst="2002::1") / + ICMPv6EchoRequest()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp6_drop_in_ipv6_5g(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + print("Deleting the old containers...") + time.sleep(30) + print("Starting the new containers...") + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface( + local_ip="B::1/120", + remote_ip="B::2", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + + c1.vppctl_exec( + "sr localsid prefix D::/64 behavior end.m.gtp6.d.di D4::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec("sr localsid prefix D4::/64 behavior end.m.gtp6.e") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "B::2", "D::2/128") + + print("Waiting...") + time.sleep(30) + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="D::2") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + GTPPDUSessionContainer(R=1, QFI=3) / + IPv6(src="2001::1", dst="2002::1") / + ICMPv6EchoRequest()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp6(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + print("Deleting the old containers...") + time.sleep(30) + print("Starting the new containers...") + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + + c1.vppctl_exec( + "sr localsid prefix D::/64 behavior end.m.gtp6.d D4::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec("sr localsid prefix D4::/64 behavior end.dt4 2") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.200.0.1/32") + + print("Waiting...") + time.sleep(30) + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="D::2") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + IP(src="172.100.0.1", dst="172.200.0.1") / + ICMP()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp6_5g(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + print("Deleting the old containers...") + time.sleep(30) + print("Starting the new containers...") + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface4( + local_ip="1.0.0.2/30", + remote_ip="1.0.0.1", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + + c1.vppctl_exec( + "sr localsid prefix D::/64 behavior end.m.gtp6.d D4::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec("sr localsid prefix D4::/64 behavior end.dt4 2") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ip_pgroute("pg0", "1.0.0.1", "172.200.0.1/32") + + print("Waiting...") + time.sleep(30) + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="D::2") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + GTPPDUSessionContainer(R=1, QFI=3) / + IP(src="172.100.0.1", dst="172.200.0.1") / + ICMP()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp6_ipv6(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + print("Deleting the old containers...") + time.sleep(30) + print("Starting the new containers...") + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface( + local_ip="B::1/120", + remote_ip="B::2", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + + c1.vppctl_exec( + "sr localsid prefix D::/64 behavior end.m.gtp6.d D4::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec("sr localsid prefix D4::/64 behavior end.dt6 2") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ipv6_pgroute("pg0", "B::2", "2002::1/128") + + print("Waiting...") + time.sleep(30) + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="D::2") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + IPv6(src="2001::1", dst="2002::1") / + ICMPv6EchoRequest()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def test_gtp6_ipv6_5g(self): + # TESTS: + # trace add af-packet-input 10 + # pg interface on c1 172.20.0.1 + # pg interface on c4 B::1/120 + + self.start_containers() + + print("Deleting the old containers...") + time.sleep(30) + print("Starting the new containers...") + + c1 = self.containers.get(self.get_name(self.instance_names[0])) + c2 = self.containers.get(self.get_name(self.instance_names[1])) + c3 = self.containers.get(self.get_name(self.instance_names[2])) + c4 = self.containers.get(self.get_name(self.instance_names[-1])) + + c1.pg_create_interface( + local_ip="C::1/120", + remote_ip="C::2", + local_mac="aa:bb:cc:dd:ee:01", + remote_mac="aa:bb:cc:dd:ee:02") + c4.pg_create_interface( + local_ip="B::1/120", + remote_ip="B::2", + local_mac="aa:bb:cc:dd:ee:11", + remote_mac="aa:bb:cc:dd:ee:22") + + c1.vppctl_exec("set sr encaps source addr A1::1") + c1.vppctl_exec("sr policy add bsid D4:: next D2:: next D3::") + + c1.vppctl_exec( + "sr localsid prefix D::/64 behavior end.m.gtp6.d D4::/64") + + c2.vppctl_exec("sr localsid address D2:: behavior end") + + c3.vppctl_exec("sr localsid address D3:: behavior end") + + c4.vppctl_exec("sr localsid prefix D4::/64 behavior end.dt6 2") + + c2.set_ipv6_route("eth2", "A2::2", "D3::/128") + c2.set_ipv6_route("eth1", "A1::1", "C::/120") + c3.set_ipv6_route("eth2", "A3::2", "D4::/32") + c3.set_ipv6_route("eth1", "A2::1", "C::/120") + c4.set_ipv6_pgroute("pg0", "B::2", "2002::1/128") + + print("Waiting...") + time.sleep(30) + + p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") / + IPv6(src="C::2", dst="D::2") / + UDP(sport=2152, dport=2152) / + GTP_U_Header(gtp_type="g_pdu", teid=200) / + GTPPDUSessionContainer(R=1, QFI=3) / + IPv6(src="2001::1", dst="2002::1") / + ICMPv6EchoRequest()) + + print("Sending packet on {}:".format(c1.name)) + p.show2() + + c1.enable_trace(10) + c4.enable_trace(10) + + c4.pg_start_capture() + + c1.pg_create_stream(p) + c1.pg_enable() + + # timeout (sleep) if needed + print("Sleeping") + time.sleep(5) + + print("Receiving packet on {}:".format(c4.name)) + for p in c4.pg_read_packets(): + p.show2() + + def status_containers(self): + + print("Instances:") + + for i, name in enumerate(self.instance_names): + name = self.get_name(name) + print("\t[{}] {} - {}".format( + i, name, + "running" if self.containers.get(name) else "missing")) + + print("Networks:") + + for i, name in enumerate(self.network_names): + name = self.get_name(name) + print("\t[{}] {} - {}".format( + i, name, + "running" if self.networks.get(name) else "missing")) + + def build_image(self): + # TODO: optimize build process for speed and image size + print("VPP Path (build): {}".format(self.vpp_path)) + self.containers.build(self.path, self.vpp_path) + + def release_image(self): + print("VPP Path (release): {}".format(self.vpp_path)) + instance = self.containers.new("release-build") + + system( + "docker cp release-build:{}/vpp-package.tgz {}/".format( + self.vpp_path, self.vpp_path)) + + instance.rem() + + self.containers.release(self.path, self.vpp_path) + + system("rm -rf {}/vpp-package.tgz".format(self.vpp_path)) + + def vppctl(self, index, command=None): + if index >= len(self.instance_names): + return + name = self.get_name(self.instance_names[index]) + self.logger.error("connecting to: {}".format(name)) + self.containers.vppctl(name, command) + + def bash(self, index): + if index >= len(self.instance_names): + return + name = self.get_name(self.instance_names[index]) + self.logger.error("connecting to: {}".format(name)) + self.containers.bash(name) + + +def get_args(): + parser = ArgumentParser() + + parser.add_argument("--verbose", choices=['error', 'debug', 'info']) + + parser.add_argument('--image', choices=['debug', 'release']) + + subparsers = parser.add_subparsers() + + p1 = subparsers.add_parser( + "infra", help="Infrastructure related commands.") + + p1.add_argument( + "op", + choices=[ + 'stop', + 'start', + 'status', + 'restart', + 'build', + 'release']) + + p1.add_argument("--prefix") + p1.add_argument("--image") + + p2 = subparsers.add_parser("cmd", help="Instance related commands.") + + p2.add_argument("op", choices=['vppctl', 'bash']) + + p2.add_argument( + "index", + type=int, + help="Container instance index. (./runner.py infra status)") + + p2.add_argument( + "--command", help="Only vppctl supports this optional argument.") + + p3 = subparsers.add_parser("test", help="Test related commands.") + + p3.add_argument( + "op", + choices=[ + "ping", + "srv6", + "tmap", + "tmap_5g", + "tmap_ipv6", + "tmap_ipv6_5g", + "gtp4", + "gtp4_5g", + "gtp4_echo", + "gtp4_ipv6", + "gtp4_ipv6_5g", + "gtp6_drop_in", + "gtp6_drop_in_5g", + "gtp6_drop_in_echo", + "gtp6_drop_in_ipv6", + "gtp6_drop_in_ipv6_5g", + "gtp6", + "gtp6_5g", + "gtp6_ipv6", + "gtp6_ipv6_5g"]) + + args = parser.parse_args() + if not hasattr(args, "op") or not args.op: + parser.print_help(sys.stderr) + sys.exit(1) + + return vars(args) + + +def main(op=None, prefix=None, verbose=None, + image=None, index=None, command=None): + + if verbose: + basicConfig(level=verbose_levels[verbose]) + + if image == 'release': + image = "srv6m-release-image" + elif image == 'debug': + image = "srv6m-image" + + print("Verified image: {}".format(image)) + + program = Program(image, prefix) + + try: + if op == 'build': + program.build_image() + elif op == 'release': + program.release_image() + elif op == 'stop': + program.stop_containers() + elif op == 'start': + program.start_containers() + elif op == 'status': + program.status_containers() + elif op == 'vppctl': + program.vppctl(index, command) + elif op == 'bash': + program.bash(index) + elif op == 'ping': + program.test_ping() + elif op == 'srv6': + program.test_srv6() + elif op == 'tmap': + program.test_tmap() + elif op == 'tmap_5g': + program.test_tmap_5g() + elif op == 'tmap_ipv6': + program.test_tmap_ipv6() + elif op == 'tmap_ipv6_5g': + program.test_tmap_ipv6_5g() + elif op == 'gtp4': + program.test_gtp4() + elif op == 'gtp4_5g': + program.test_gtp4_5g() + elif op == 'gtp4_echo': + program.test_gtp4_echo() + elif op == 'gtp4_ipv6': + program.test_gtp4_ipv6() + elif op == 'gtp4_ipv6_5g': + program.test_gtp4_ipv6_5g() + elif op == 'gtp6_drop_in': + program.test_gtp6_drop_in() + elif op == 'gtp6_drop_in_5g': + program.test_gtp6_drop_in_5g() + elif op == 'gtp6_drop_in_echo': + program.test_gtp6_drop_in_echo() + elif op == 'gtp6_drop_in_ipv6': + program.test_gtp6_drop_in_ipv6() + elif op == 'gtp6_drop_in_ipv6_5g': + program.test_gtp6_drop_in_ipv6_5g() + elif op == 'gtp6': + program.test_gtp6() + elif op == 'gtp6_5g': + program.test_gtp6_5g() + elif op == 'gtp6_ipv6': + program.test_gtp6_ipv6() + elif op == 'gtp6_ipv6_5g': + program.test_gtp6_ipv6_5g() + + except Exception: + program.logger.exception("") + rc = 1 + else: + rc = 0 + + return rc + + +if __name__ == "__main__": + sys.exit(main(**get_args())) diff --git a/src/plugins/srv6-mobile/extra/startup.conf.j2 b/src/plugins/srv6-mobile/extra/startup.conf.j2 new file mode 100644 index 00000000000..5a4a2ef103d --- /dev/null +++ b/src/plugins/srv6-mobile/extra/startup.conf.j2 @@ -0,0 +1,14 @@ +unix { + nodaemon + cli-no-pager + cli-listen 0.0.0.0:5002 +} +plugins { + plugin dpdk_plugin.so { + disable + } +} +cpu { + workers 2 +} + diff --git a/src/plugins/srv6-mobile/extra/topo-init.png b/src/plugins/srv6-mobile/extra/topo-init.png new file mode 100644 index 00000000000..e69de29bb2d --- /dev/null +++ b/src/plugins/srv6-mobile/extra/topo-init.png diff --git a/src/plugins/srv6-mobile/extra/topo-test_gtp4d.png b/src/plugins/srv6-mobile/extra/topo-test_gtp4d.png new file mode 100644 index 00000000000..e69de29bb2d --- /dev/null +++ b/src/plugins/srv6-mobile/extra/topo-test_gtp4d.png diff --git a/src/plugins/srv6-mobile/extra/topo-test_gtp6.png b/src/plugins/srv6-mobile/extra/topo-test_gtp6.png new file mode 100644 index 00000000000..e69de29bb2d --- /dev/null +++ b/src/plugins/srv6-mobile/extra/topo-test_gtp6.png diff --git a/src/plugins/srv6-mobile/extra/topo-test_gtp6d.png b/src/plugins/srv6-mobile/extra/topo-test_gtp6d.png new file mode 100644 index 00000000000..e69de29bb2d --- /dev/null +++ b/src/plugins/srv6-mobile/extra/topo-test_gtp6d.png diff --git a/src/plugins/srv6-mobile/extra/topo-test_gtp6ip6.png b/src/plugins/srv6-mobile/extra/topo-test_gtp6ip6.png new file mode 100644 index 00000000000..e69de29bb2d --- /dev/null +++ b/src/plugins/srv6-mobile/extra/topo-test_gtp6ip6.png diff --git a/src/plugins/srv6-mobile/gtp4_e.c b/src/plugins/srv6-mobile/gtp4_e.c new file mode 100644 index 00000000000..73a91f8592d --- /dev/null +++ b/src/plugins/srv6-mobile/gtp4_e.c @@ -0,0 +1,188 @@ +/* + * srv6_end_m_gtp4_e.c + * + * Copyright (c) 2019 Arrcus Inc 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. + */ + +#include <vnet/vnet.h> +#include <vnet/adj/adj.h> +#include <vnet/plugin/plugin.h> +#include <vpp/app/version.h> +#include <srv6-mobile/mobile.h> + +srv6_end_main_v4_t srv6_end_main_v4; + +static void +clb_dpo_lock_srv6_end_m_gtp4_e (dpo_id_t * dpo) +{ +} + +static void +clb_dpo_unlock_srv6_end_m_gtp4_e (dpo_id_t * dpo) +{ +} + +static u8 * +clb_dpo_format_srv6_end_m_gtp4_e (u8 * s, va_list * args) +{ + index_t index = va_arg (*args, index_t); + CLIB_UNUSED (u32 indent) = va_arg (*args, u32); + + return (format (s, "SR: dynamic_proxy_index:[%u]", index)); +} + +const static dpo_vft_t dpo_vft = { + .dv_lock = clb_dpo_lock_srv6_end_m_gtp4_e, + .dv_unlock = clb_dpo_unlock_srv6_end_m_gtp4_e, + .dv_format = clb_dpo_format_srv6_end_m_gtp4_e, +}; + +const static char *const srv6_end_m_gtp4_e_nodes[] = { + "srv6-end-m-gtp4-e", + NULL, +}; + +const static char *const *const dpo_nodes[DPO_PROTO_NUM] = { + [DPO_PROTO_IP6] = srv6_end_m_gtp4_e_nodes, +}; + +static u8 fn_name[] = "SRv6-End.M.GTP4.E-plugin"; +static u8 keyword_str[] = "end.m.gtp4.e"; +static u8 def_str[] = + "Endpoint function with encapsulation for IPv4/GTP tunnel"; +static u8 param_str[] = ""; + +static u8 * +clb_format_srv6_end_m_gtp4_e (u8 * s, va_list * args) +{ + srv6_end_gtp4_param_t *ls_mem = va_arg (*args, void *); + + s = format (s, "SRv6 End gtp4.e\n\t"); + + s = format (s, "IPv4 address position: %d\n", ls_mem->v4src_position); + + return s; +} + +static uword +clb_unformat_srv6_end_m_gtp4_e (unformat_input_t * input, va_list * args) +{ + void **plugin_mem_p = va_arg (*args, void **); + srv6_end_gtp4_param_t *ls_mem; + u32 v4src_position; + + if (!unformat (input, "end.m.gtp4.e v4src_position %d", &v4src_position)) + return 0; + + ls_mem = clib_mem_alloc_aligned_at_offset (sizeof *ls_mem, 0, 0, 1); + clib_memset (ls_mem, 0, sizeof *ls_mem); + *plugin_mem_p = ls_mem; + + ls_mem->v4src_position = v4src_position; + + return 1; +} + +static int +clb_creation_srv6_end_m_gtp4_e (ip6_sr_localsid_t * localsid) +{ + return 0; +} + +static int +clb_removal_srv6_end_m_gtp4_e (ip6_sr_localsid_t * localsid) +{ + srv6_end_gtp4_param_t *ls_mem; + + ls_mem = localsid->plugin_mem; + + clib_mem_free (ls_mem); + + return 0; +} + +static clib_error_t * +srv6_end_m_gtp4_e_init (vlib_main_t * vm) +{ + srv6_end_main_v4_t *sm = &srv6_end_main_v4; + ip4_header_t *ip4 = &sm->cache_hdr.ip4; + udp_header_t *udp = &sm->cache_hdr.udp; + gtpu_header_t *gtpu = &sm->cache_hdr.gtpu; + dpo_type_t dpo_type; + vlib_node_t *node; + u32 rc; + + sm->vlib_main = vm; + sm->vnet_main = vnet_get_main (); + + node = vlib_get_node_by_name (vm, (u8 *) "srv6-end-m-gtp4-e"); + sm->end_m_gtp4_e_node_index = node->index; + + node = vlib_get_node_by_name (vm, (u8 *) "error-drop"); + sm->error_node_index = node->index; + + sm->dst_p_len = 32; + sm->src_p_len = 64; + + // clear the pre cached packet + clib_memset_u8 (ip4, 0, sizeof (ip4_gtpu_header_t)); + + // set defaults + ip4->ip_version_and_header_length = 0x45; + ip4->protocol = IP_PROTOCOL_UDP; + ip4->ttl = 64; + + udp->dst_port = clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT); + + gtpu->ver_flags = GTPU_V1_VER | GTPU_PT_GTP; + gtpu->type = GTPU_TYPE_GTPU; + // + + dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes); + + rc = sr_localsid_register_function (vm, fn_name, keyword_str, def_str, param_str, 32, //prefix len + &dpo_type, + clb_format_srv6_end_m_gtp4_e, + clb_unformat_srv6_end_m_gtp4_e, + clb_creation_srv6_end_m_gtp4_e, + clb_removal_srv6_end_m_gtp4_e); + if (rc < 0) + clib_error_return (0, "SRv6 Endpoint GTP4.E LocalSID function" + "couldn't be registered"); + return 0; +} + +/* *INDENT-OFF* */ +VNET_FEATURE_INIT (srv6_end_m_gtp4_e, static) = +{ + .arc_name = "ip6-unicast", + .node_name = "srv6-end-m-gtp4-e", + .runs_before = 0, +}; + +VLIB_INIT_FUNCTION (srv6_end_m_gtp4_e_init); + +VLIB_PLUGIN_REGISTER () = { + .version = VPP_BUILD_VER, + .description = "SRv6 GTP Endpoint Functions", +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/srv6-mobile/gtp6_d.c b/src/plugins/srv6-mobile/gtp6_d.c new file mode 100644 index 00000000000..3f366e81e5c --- /dev/null +++ b/src/plugins/srv6-mobile/gtp6_d.c @@ -0,0 +1,216 @@ +/* + * srv6_end_m_gtp6_d.c + * + * Copyright (c) 2019 Arrcus Inc 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. + */ + +#include <vnet/vnet.h> +#include <vnet/adj/adj.h> +#include <vnet/plugin/plugin.h> +#include <vpp/app/version.h> +#include <srv6-mobile/mobile.h> + +srv6_end_main_v6_decap_t srv6_end_main_v6_decap; + +static void +clb_dpo_lock_srv6_end_m_gtp6_d (dpo_id_t * dpo) +{ +} + +static void +clb_dpo_unlock_srv6_end_m_gtp6_d (dpo_id_t * dpo) +{ +} + +static u8 * +clb_dpo_format_srv6_end_m_gtp6_d (u8 * s, va_list * args) +{ + index_t index = va_arg (*args, index_t); + CLIB_UNUSED (u32 indent) = va_arg (*args, u32); + + return (format (s, "SR: dynamic_proxy_index:[%u]", index)); +} + +const static dpo_vft_t dpo_vft = { + .dv_lock = clb_dpo_lock_srv6_end_m_gtp6_d, + .dv_unlock = clb_dpo_unlock_srv6_end_m_gtp6_d, + .dv_format = clb_dpo_format_srv6_end_m_gtp6_d, +}; + +const static char *const srv6_end_m_gtp6_d_nodes[] = { + "srv6-end-m-gtp6-d", + NULL, +}; + +const static char *const *const dpo_nodes[DPO_PROTO_NUM] = { + [DPO_PROTO_IP6] = srv6_end_m_gtp6_d_nodes, +}; + +static u8 fn_name[] = "SRv6-End.M.GTP6.D-plugin"; +static u8 keyword_str[] = "end.m.gtp6.d"; +static u8 def_str[] = + "Endpoint function with dencapsulation for IPv6/GTP tunnel"; +static u8 param_str[] = "<sr-prefix>/<sr-prefixlen> [nhtype <nhtype>]"; + +static u8 * +clb_format_srv6_end_m_gtp6_d (u8 * s, va_list * args) +{ + srv6_end_gtp6_param_t *ls_mem = va_arg (*args, void *); + + s = format (s, "SRv6 End gtp6.d\n\t"); + + s = + format (s, "SR Prefix: %U/%d", format_ip6_address, &ls_mem->sr_prefix, + ls_mem->sr_prefixlen); + + if (ls_mem->nhtype != SRV6_NHTYPE_NONE) + { + if (ls_mem->nhtype == SRV6_NHTYPE_IPV4) + s = format (s, ", NHType IPv4\n"); + else if (ls_mem->nhtype == SRV6_NHTYPE_IPV6) + s = format (s, ", NHType IPv6\n"); + else if (ls_mem->nhtype == SRV6_NHTYPE_NON_IP) + s = format (s, ", NHType Non-IP\n"); + else + s = format (s, ", NHType Unknow(%d)\n", ls_mem->nhtype); + } + else + s = format (s, "\n"); + + return s; +} + +static uword +clb_unformat_srv6_end_m_gtp6_d (unformat_input_t * input, va_list * args) +{ + void **plugin_mem_p = va_arg (*args, void **); + srv6_end_gtp6_param_t *ls_mem; + ip6_address_t sr_prefix; + u32 sr_prefixlen; + u8 nhtype; + + if (unformat (input, "end.m.gtp6.d %U/%d nh-type ipv4", + unformat_ip6_address, &sr_prefix, &sr_prefixlen)) + { + nhtype = SRV6_NHTYPE_IPV4; + } + else if (unformat (input, "end.m.gtp6.d %U/%d nh-type ipv6", + unformat_ip6_address, &sr_prefix, &sr_prefixlen)) + { + nhtype = SRV6_NHTYPE_IPV6; + } + else if (unformat (input, "end.m.gtp6.d %U/%d nh-type none", + unformat_ip6_address, &sr_prefix, &sr_prefixlen)) + { + nhtype = SRV6_NHTYPE_NON_IP; + } + else if (unformat (input, "end.m.gtp6.d %U/%d", + unformat_ip6_address, &sr_prefix, &sr_prefixlen)) + { + nhtype = SRV6_NHTYPE_NONE; + } + else + { + return 0; + } + + ls_mem = clib_mem_alloc_aligned_at_offset (sizeof *ls_mem, 0, 0, 1); + clib_memset (ls_mem, 0, sizeof *ls_mem); + *plugin_mem_p = ls_mem; + + ls_mem->sr_prefix = sr_prefix; + ls_mem->sr_prefixlen = sr_prefixlen; + + ls_mem->nhtype = nhtype; + + return 1; +} + +static int +clb_creation_srv6_end_m_gtp6_d (ip6_sr_localsid_t * localsid) +{ + return 0; +} + +static int +clb_removal_srv6_end_m_gtp6_d (ip6_sr_localsid_t * localsid) +{ + srv6_end_gtp6_param_t *ls_mem; + + ls_mem = localsid->plugin_mem; + + clib_mem_free (ls_mem); + + return 0; +} + +static clib_error_t * +srv6_end_m_gtp6_d_init (vlib_main_t * vm) +{ + srv6_end_main_v6_decap_t *sm = &srv6_end_main_v6_decap; + ip6_header_t *ip6; + dpo_type_t dpo_type; + vlib_node_t *node; + u32 rc; + + sm->vlib_main = vm; + sm->vnet_main = vnet_get_main (); + + node = vlib_get_node_by_name (vm, (u8 *) "srv6-end-m-gtp6-d"); + sm->end_m_gtp6_d_node_index = node->index; + + node = vlib_get_node_by_name (vm, (u8 *) "error-drop"); + sm->error_node_index = node->index; + + ip6 = &sm->cache_hdr; + + clib_memset_u8 (ip6, 0, sizeof (ip6_header_t)); + + // IPv6 header (default) + ip6->ip_version_traffic_class_and_flow_label = 0x60; + ip6->hop_limit = 64; + ip6->protocol = IP_PROTOCOL_IPV6; + + dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes); + + rc = sr_localsid_register_function (vm, fn_name, keyword_str, def_str, param_str, 128, //prefix len + &dpo_type, + clb_format_srv6_end_m_gtp6_d, + clb_unformat_srv6_end_m_gtp6_d, + clb_creation_srv6_end_m_gtp6_d, + clb_removal_srv6_end_m_gtp6_d); + if (rc < 0) + clib_error_return (0, "SRv6 Endpoint GTP6.D LocalSID function" + "couldn't be registered"); + return 0; +} + +/* *INDENT-OFF* */ +VNET_FEATURE_INIT (srv6_end_m_gtp6_d, static) = +{ + .arc_name = "ip6-unicast", + .node_name = "srv6-end-m-gtp6-d", + .runs_before = 0, +}; + +VLIB_INIT_FUNCTION (srv6_end_m_gtp6_d_init); +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/srv6-mobile/gtp6_d_di.c b/src/plugins/srv6-mobile/gtp6_d_di.c new file mode 100644 index 00000000000..54f18738605 --- /dev/null +++ b/src/plugins/srv6-mobile/gtp6_d_di.c @@ -0,0 +1,218 @@ +/* + * srv6_end_m_gtp6_d_di_di.c + * + * Copyright (c) 2019 Arrcus Inc 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. + */ + +#include <vnet/vnet.h> +#include <vnet/adj/adj.h> +#include <vnet/plugin/plugin.h> +#include <vpp/app/version.h> +#include <srv6-mobile/mobile.h> + +srv6_end_main_v6_decap_di_t srv6_end_main_v6_decap_di; + +static void +clb_dpo_lock_srv6_end_m_gtp6_d_di (dpo_id_t * dpo) +{ +} + +static void +clb_dpo_unlock_srv6_end_m_gtp6_d_di (dpo_id_t * dpo) +{ +} + +static u8 * +clb_dpo_format_srv6_end_m_gtp6_d_di (u8 * s, va_list * args) +{ + index_t index = va_arg (*args, index_t); + CLIB_UNUSED (u32 indent) = va_arg (*args, u32); + + return (format (s, "SR: dynamic_proxy_index:[%u]", index)); +} + +const static dpo_vft_t dpo_vft = { + .dv_lock = clb_dpo_lock_srv6_end_m_gtp6_d_di, + .dv_unlock = clb_dpo_unlock_srv6_end_m_gtp6_d_di, + .dv_format = clb_dpo_format_srv6_end_m_gtp6_d_di, +}; + +const static char *const srv6_end_m_gtp6_d_di_nodes[] = { + "srv6-end-m-gtp6-d-di", + NULL, +}; + +const static char *const *const dpo_nodes[DPO_PROTO_NUM] = { + [DPO_PROTO_IP6] = srv6_end_m_gtp6_d_di_nodes, +}; + +static u8 fn_name[] = "SRv6-End.M.GTP6.D.DI-plugin"; +static u8 keyword_str[] = "end.m.gtp6.d.di"; +static u8 def_str[] = + "Endpoint function with drop-in dencapsulation for IPv6/GTP tunnel"; +static u8 param_str[] = "<sr-prefix>/<sr-prefixlen> [nhtype <nhtype>]"; + +static u8 * +clb_format_srv6_end_m_gtp6_d_di (u8 * s, va_list * args) +{ + srv6_end_gtp6_param_t *ls_mem = va_arg (*args, void *); + + s = format (s, "SRv6 End gtp6.d Drop-in\n\t"); + + s = + format (s, "SR Prefix: %U/%d", format_ip6_address, &ls_mem->sr_prefix, + ls_mem->sr_prefixlen); + + if (ls_mem->nhtype != SRV6_NHTYPE_NONE) + { + if (ls_mem->nhtype == SRV6_NHTYPE_IPV4) + s = format (s, ", NHType IPv4\n"); + else if (ls_mem->nhtype == SRV6_NHTYPE_IPV6) + s = format (s, ", NHType IPv6\n"); + else if (ls_mem->nhtype == SRV6_NHTYPE_NON_IP) + s = format (s, ", NHType Non-IP\n"); + else + s = format (s, ", NHType Unknow(%d)\n", ls_mem->nhtype); + } + else + s = format (s, "\n"); + + return s; +} + +static uword +clb_unformat_srv6_end_m_gtp6_d_di (unformat_input_t * input, va_list * args) +{ + void **plugin_mem_p = va_arg (*args, void **); + srv6_end_gtp6_param_t *ls_mem; + ip6_address_t sr_prefix; + u32 sr_prefixlen = 0; + u8 nhtype; + + if (unformat (input, "end.m.gtp6.d.di %U/%d nhtype ipv4", + unformat_ip6_address, &sr_prefix, &sr_prefixlen)) + { + nhtype = SRV6_NHTYPE_IPV4; + } + else if (unformat (input, "end.m.gtp6.d.di %U/%d nhtype ipv6", + unformat_ip6_address, &sr_prefix, &sr_prefixlen)) + { + nhtype = SRV6_NHTYPE_IPV6; + } + else if (unformat (input, "end.m.gtp6.d.di %U/%d nhtype non-ip", + unformat_ip6_address, &sr_prefix, &sr_prefixlen)) + { + nhtype = SRV6_NHTYPE_NON_IP; + } + else if (unformat (input, "end.m.gtp6.d.di %U/%d", + unformat_ip6_address, &sr_prefix, &sr_prefixlen)) + { + nhtype = SRV6_NHTYPE_NONE; + } + else + { + return 0; + } + + ls_mem = clib_mem_alloc_aligned_at_offset (sizeof *ls_mem, 0, 0, 1); + clib_memset (ls_mem, 0, sizeof *ls_mem); + *plugin_mem_p = ls_mem; + + ls_mem->sr_prefix = sr_prefix; + ls_mem->sr_prefixlen = sr_prefixlen; + ls_mem->nhtype = nhtype; + + return 1; +} + +static int +clb_creation_srv6_end_m_gtp6_d_di (ip6_sr_localsid_t * localsid) +{ + return 0; +} + +static int +clb_removal_srv6_end_m_gtp6_d_di (ip6_sr_localsid_t * localsid) +{ + srv6_end_gtp6_param_t *ls_mem; + + ls_mem = localsid->plugin_mem; + + clib_mem_free (ls_mem); + + return 0; +} + +static clib_error_t * +srv6_end_m_gtp6_d_di_init (vlib_main_t * vm) +{ + srv6_end_main_v6_decap_di_t *sm = &srv6_end_main_v6_decap_di; + ip6srv_combo_header_t *ip6; + dpo_type_t dpo_type; + vlib_node_t *node; + u32 rc; + + sm->vlib_main = vm; + sm->vnet_main = vnet_get_main (); + + node = vlib_get_node_by_name (vm, (u8 *) "srv6-end-m-gtp6-d-di"); + sm->end_m_gtp6_d_di_node_index = node->index; + + node = vlib_get_node_by_name (vm, (u8 *) "error-drop"); + sm->error_node_index = node->index; + + ip6 = &sm->cache_hdr; + + clib_memset_u8 (ip6, 0, sizeof (ip6srv_combo_header_t)); + + // IPv6 header (default) + ip6->ip.ip_version_traffic_class_and_flow_label = 0x60; + ip6->ip.hop_limit = 64; + ip6->ip.protocol = IPPROTO_IPV6_ROUTE; + + // SR header (default) + ip6->sr.type = 4; + + dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes); + + rc = sr_localsid_register_function (vm, fn_name, keyword_str, def_str, param_str, 128, //prefix len + &dpo_type, + clb_format_srv6_end_m_gtp6_d_di, + clb_unformat_srv6_end_m_gtp6_d_di, + clb_creation_srv6_end_m_gtp6_d_di, + clb_removal_srv6_end_m_gtp6_d_di); + if (rc < 0) + clib_error_return (0, "SRv6 Endpoint GTP6.D.DI LocalSID function" + "couldn't be registered"); + return 0; +} + +/* *INDENT-OFF* */ +VNET_FEATURE_INIT (srv6_end_m_gtp6_d_di, static) = +{ + .arc_name = "ip6-unicast", + .node_name = "srv6-end-m-gtp6-d-di", + .runs_before = 0, +}; + +VLIB_INIT_FUNCTION (srv6_end_m_gtp6_d_di_init); +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/srv6-mobile/gtp6_e.c b/src/plugins/srv6-mobile/gtp6_e.c new file mode 100644 index 00000000000..4bc8d97cec7 --- /dev/null +++ b/src/plugins/srv6-mobile/gtp6_e.c @@ -0,0 +1,157 @@ +/* + * srv6_end_m_gtp6_e.c + * + * Copyright (c) 2019 Arrcus Inc 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. + */ + +#include <vnet/vnet.h> +#include <vnet/adj/adj.h> +#include <vnet/plugin/plugin.h> +#include <vpp/app/version.h> +#include <srv6-mobile/mobile.h> + +srv6_end_main_v6_t srv6_end_main_v6; + +static void +clb_dpo_lock_srv6_end_m_gtp6_e (dpo_id_t * dpo) +{ +} + +static void +clb_dpo_unlock_srv6_end_m_gtp6_e (dpo_id_t * dpo) +{ +} + +static u8 * +clb_dpo_format_srv6_end_m_gtp6_e (u8 * s, va_list * args) +{ + index_t index = va_arg (*args, index_t); + CLIB_UNUSED (u32 indent) = va_arg (*args, u32); + + return (format (s, "SR: dynamic_proxy_index:[%u]", index)); +} + +const static dpo_vft_t dpo_vft = { + .dv_lock = clb_dpo_lock_srv6_end_m_gtp6_e, + .dv_unlock = clb_dpo_unlock_srv6_end_m_gtp6_e, + .dv_format = clb_dpo_format_srv6_end_m_gtp6_e, +}; + +const static char *const srv6_end_m_gtp6_e_nodes[] = { + "srv6-end-m-gtp6-e", + NULL, +}; + +const static char *const *const dpo_nodes[DPO_PROTO_NUM] = { + [DPO_PROTO_IP6] = srv6_end_m_gtp6_e_nodes, +}; + +static u8 fn_name[] = "SRv6-End.M.GTP6.E-plugin"; +static u8 keyword_str[] = "end.m.gtp6.e"; +static u8 def_str[] = + "Endpoint function with encapsulation for IPv6/GTP tunnel"; +static u8 param_str[] = ""; + +static u8 * +clb_format_srv6_end_m_gtp6_e (u8 * s, va_list * args) +{ + s = format (s, "SRv6 End format function unsupported."); + return s; +} + +static uword +clb_unformat_srv6_end_m_gtp6_e (unformat_input_t * input, va_list * args) +{ + if (!unformat (input, "end.m.gtp6.e")) + return 0; + return 1; +} + +static int +clb_creation_srv6_end_m_gtp6_e (ip6_sr_localsid_t * localsid) +{ + return 0; +} + +static int +clb_removal_srv6_end_m_gtp6_e (ip6_sr_localsid_t * localsid) +{ + return 0; +} + +static clib_error_t * +srv6_end_m_gtp6_e_init (vlib_main_t * vm) +{ + srv6_end_main_v6_t *sm = &srv6_end_main_v6; + ip6_header_t *ip6 = &sm->cache_hdr.ip6; + udp_header_t *udp = &sm->cache_hdr.udp; + gtpu_header_t *gtpu = &sm->cache_hdr.gtpu; + dpo_type_t dpo_type; + vlib_node_t *node; + u32 rc; + + sm->vlib_main = vm; + sm->vnet_main = vnet_get_main (); + + node = vlib_get_node_by_name (vm, (u8 *) "srv6-end-m-gtp6-e"); + sm->end_m_gtp6_e_node_index = node->index; + + node = vlib_get_node_by_name (vm, (u8 *) "error-drop"); + sm->error_node_index = node->index; + + // clear the pre cached packet + clib_memset_u8 (ip6, 0, sizeof (ip6_gtpu_header_t)); + + // set defaults + ip6->ip_version_traffic_class_and_flow_label = 0x60; + ip6->protocol = IP_PROTOCOL_UDP; + ip6->hop_limit = 64; + + udp->dst_port = clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT); + + gtpu->ver_flags = GTPU_V1_VER | GTPU_PT_GTP; + gtpu->type = GTPU_TYPE_GTPU; + + dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes); + + rc = sr_localsid_register_function (vm, fn_name, keyword_str, def_str, param_str, 128, //prefix len + &dpo_type, + clb_format_srv6_end_m_gtp6_e, + clb_unformat_srv6_end_m_gtp6_e, + clb_creation_srv6_end_m_gtp6_e, + clb_removal_srv6_end_m_gtp6_e); + if (rc < 0) + clib_error_return (0, "SRv6 Endpoint GTP6.E LocalSID function" + "couldn't be registered"); + return 0; +} + +/* *INDENT-OFF* */ +VNET_FEATURE_INIT (srv6_end_m_gtp6_e, static) = +{ + .arc_name = "ip6-unicast", + .node_name = "srv6-end-m-gtp6-e", + .runs_before = 0, +}; + +VLIB_INIT_FUNCTION (srv6_end_m_gtp6_e_init); +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/srv6-mobile/mobile.h b/src/plugins/srv6-mobile/mobile.h new file mode 100644 index 00000000000..8be9dc2b944 --- /dev/null +++ b/src/plugins/srv6-mobile/mobile.h @@ -0,0 +1,243 @@ +/* + * srv6_end.h + * + * Copyright (c) 2019 Arrcus Inc 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. + */ + +#ifndef __included_srv6_end_h__ +#define __included_srv6_end_h__ + +#include <vnet/vnet.h> +#include <vnet/ip/ip.h> +#include <vnet/srv6/sr.h> +#include <vnet/srv6/sr_packet.h> + +#include <vppinfra/error.h> +#include <vppinfra/elog.h> + +#define SRV6_GTP_UDP_DST_PORT 2152 + +#define SRV6_NHTYPE_NONE 0 +#define SRV6_NHTYPE_IPV4 1 +#define SRV6_NHTYPE_IPV6 2 +#define SRV6_NHTYPE_NON_IP 3 + +#ifndef IP_PROTOCOL_NONE +#define IP_PROTOCOL_NONE 59 +#endif + +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ +#define BITALIGN2(A,B) A; B +#define BITALIGN3(A,B,C) A; B; C +#else +#define BITALIGN2(A,B) B; A +#define BITALIGN3(A,B,C) C; B; A +#endif + +#define GTPU_EXTHDR_FLAG 0x04 +#define GTPU_EXTHDR_PDU_SESSION 0x85 + +#define SRH_TAG_ECHO_REPLY 0x0008 +#define SRH_TAG_ECHO_REQUEST 0x0004 +#define SRH_TAG_ERROR_INDICATION 0x0002 +#define SRH_TAG_END_MARKER 0x0001 + +/* *INDENT-OFF* */ +typedef struct +{ + u16 seq; + u8 npdu_num; + u8 nextexthdr; +} __attribute__ ((packed)) gtpu_exthdr_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef struct +{ + u8 ver_flags; + u8 type; + u16 length; /* length in octets of the payload */ + u32 teid; + gtpu_exthdr_t ext[0]; +} __attribute__ ((packed)) gtpu_header_t; +/* *INDENT-ON* */ + +#define GTPU_TYPE_ECHO_REQUEST 1 +#define GTPU_TYPE_ECHO_REPLY 2 +#define GTPU_TYPE_ERROR_INDICATION 26 +#define GTPU_TYPE_END_MARKER 254 +#define GTPU_TYPE_GTPU 255 + +/* *INDENT-OFF* */ +typedef struct +{ + BITALIGN2 (u8 ppi:3, + u8 spare:5); + + u8 padding[3]; +} __attribute__ ((packed)) gtpu_paging_policy_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef struct +{ + u8 exthdrlen; + BITALIGN2(u8 type:4, + u8 spare:4); + union { + struct gtpu_qfi_bits {BITALIGN3(u8 p:1, + u8 r:1, + u8 qfi:6); + } bits; + + u8 val; + } u; + + gtpu_paging_policy_t paging[0]; + u8 nextexthdr; +} __attribute__ ((packed)) gtpu_pdu_session_t; +/* *INDENT-ON* */ + +#define GTPU_PDU_SESSION_P_BIT_MASK 0x80 +#define GTPU_PDU_SESSION_R_BIT_MASK 0x40 +#define GTPU_PDU_SESSION_QFI_MASK 0x3f + +#define SRV6_PDU_SESSION_U_BIT_MASK 0x01 +#define SRV6_PDU_SESSION_R_BIT_MASK 0x02 +#define SRV6_PDU_SESSION_QFI_MASK 0xfC + +/* *INDENT-OFF* */ +typedef struct +{ + ip4_header_t ip4; /* 20 bytes */ + udp_header_t udp; /* 8 bytes */ + gtpu_header_t gtpu; /* 8 bytes */ +} __attribute__ ((packed)) ip4_gtpu_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef struct +{ + ip6_header_t ip6; /* 40 bytes */ + udp_header_t udp; /* 8 bytes */ + gtpu_header_t gtpu; /* 8 bytes */ +} __attribute__ ((packed)) ip6_gtpu_header_t; +/* *INDENT-ON* */ + +#define GTPU_V1_VER (1<<5) + +#define GTPU_PT_GTP (1<<4) + +typedef struct srv6_end_gtp6_param_s +{ + u8 nhtype; + + ip6_address_t sr_prefix; + u32 sr_prefixlen; +} srv6_end_gtp6_param_t; + +typedef struct srv6_end_gtp4_param_s +{ + u8 nhtype; + + ip6_address_t sr_prefix; + u32 sr_prefixlen; + + ip6_address_t v6src_prefix; + u32 v6src_prefixlen; + + u32 v4src_position; +} srv6_end_gtp4_param_t; + +typedef struct srv6_end_main_v4_s +{ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + + u32 end_m_gtp4_e_node_index; + u32 error_node_index; + + u32 dst_p_len; // dst prefix len + u32 src_p_len; // src prefix len + + ip4_gtpu_header_t cache_hdr; + +} srv6_end_main_v4_t; + +typedef struct srv6_end_main_v4_decap_s +{ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + + u32 end_m_gtp4_d_node_index; + u32 error_node_index; + + ip6_header_t cache_hdr; +} srv6_end_main_v4_decap_t; + +extern srv6_end_main_v4_t srv6_end_main_v4; +extern srv6_end_main_v4_decap_t srv6_end_main_v4_decap; +extern vlib_node_registration_t srv6_end_m_gtp4_e; + +typedef struct srv6_end_main_v6_s +{ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + + u32 end_m_gtp6_e_node_index; + u32 error_node_index; + + ip6_gtpu_header_t cache_hdr; +} srv6_end_main_v6_t; + +extern srv6_end_main_v6_t srv6_end_main_v6; +extern vlib_node_registration_t srv6_end_m_gtp6_e; + +typedef struct srv6_end_main_v6_decap_s +{ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + + u32 end_m_gtp6_d_node_index; + u32 error_node_index; + + ip6_header_t cache_hdr; +} srv6_end_main_v6_decap_t; + +extern srv6_end_main_v6_decap_t srv6_end_main_v6_decap; +extern vlib_node_registration_t srv6_end_m_gtp6_d; + +typedef struct srv6_end_main_v6_decap_di_s +{ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + + u32 end_m_gtp6_d_di_node_index; + u32 error_node_index; + + ip6srv_combo_header_t cache_hdr; +} srv6_end_main_v6_decap_di_t; + +extern srv6_end_main_v6_decap_di_t srv6_end_main_v6_decap_di; +extern vlib_node_registration_t srv6_end_m_gtp6_d_di; + +#endif /* __included_srv6_end_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/srv6-mobile/node.c b/src/plugins/srv6-mobile/node.c new file mode 100644 index 00000000000..0c2c04e612e --- /dev/null +++ b/src/plugins/srv6-mobile/node.c @@ -0,0 +1,1533 @@ +/* + * Copyright (c) 2019 Arrcus Inc 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. + */ +#include <vlib/vlib.h> +#include <vnet/vnet.h> +#include <vppinfra/error.h> +#include <vppinfra/hash.h> +#include <srv6-mobile/mobile.h> + +extern ip6_address_t sr_pr_encaps_src; + +typedef struct +{ + ip6_address_t src, dst; + ip6_address_t sr_prefix; + u16 sr_prefixlen; + u32 teid; +} srv6_end_rewrite_trace_t; + +static u16 srh_tagfield[256] = { + /* 0 */ + 0x0, + /* 1 : Echo Request */ + 0x0004, + /* 2 : Echo Reply */ + 0x0008, + /* 3 - 7 */ + 0x0, 0x0, 0x0, 0x0, 0x0, + /* 8 - 15 */ + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + /* 16 - 23 */ + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + /* 24 - 25 */ + 0x0, 0x0, + /* 26 : Error Indication */ + 0x0002, + /* 27 - 31 */ + 0x0, 0x0, 0x0, 0x0, 0x0, + /* 32 - 247 */ + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + /* 248 - 253 */ + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + /* 254 : End Maker */ + 0x0001, + /* 255 : G_PDU */ + 0x0 +}; + +static u8 * +format_srv6_end_rewrite_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + srv6_end_rewrite_trace_t *t = va_arg (*args, srv6_end_rewrite_trace_t *); + + return format (s, "SRv6-END-rewrite: src %U dst %U\n\tTEID: 0x%x", + format_ip4_address, &t->src, format_ip4_address, &t->dst, + clib_net_to_host_u32 (t->teid)); +} + +static u8 * +format_srv6_end_rewrite_trace6 (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + srv6_end_rewrite_trace_t *t = va_arg (*args, srv6_end_rewrite_trace_t *); + + return format (s, + "SRv6-END-rewrite: src %U dst %U\n\tTEID: 0x%x\n\tsr_prefix: %U/%d", + format_ip6_address, &t->src, format_ip6_address, &t->dst, + clib_net_to_host_u32 (t->teid), format_ip6_address, + &t->sr_prefix, t->sr_prefixlen); +} + +#define foreach_srv6_end_v4_error \ + _(M_GTP4_E_PACKETS, "srv6 End.M.GTP4.E packets") \ + _(M_GTP4_E_BAD_PACKETS, "srv6 End.M.GTP4.E bad packets") + +#define foreach_srv6_end_v4_d_error \ + _(M_GTP4_D_PACKETS, "srv6 End.M.GTP4.D packets") \ + _(M_GTP4_D_BAD_PACKETS, "srv6 End.M.GTP4.D bad packets") + +#define foreach_srv6_end_v6_e_error \ + _(M_GTP6_E_PACKETS, "srv6 End.M.GTP6.E packets") \ + _(M_GTP6_E_BAD_PACKETS, "srv6 End.M.GTP6.E bad packets") + +#define foreach_srv6_end_v6_d_error \ + _(M_GTP6_D_PACKETS, "srv6 End.M.GTP6.D packets") \ + _(M_GTP6_D_BAD_PACKETS, "srv6 End.M.GTP6.D bad packets") + +#define foreach_srv6_end_v6_d_di_error \ + _(M_GTP6_D_DI_PACKETS, "srv6 End.M.GTP6.D.DI packets") \ + _(M_GTP6_D_DI_BAD_PACKETS, "srv6 End.M.GTP6.D.DI bad packets") + +typedef enum +{ +#define _(sym,str) SRV6_END_ERROR_##sym, + foreach_srv6_end_v4_error +#undef _ + SRV6_END_N_V4_ERROR, +} srv6_end_error_v4_t; + +typedef enum +{ +#define _(sym,str) SRV6_END_ERROR_##sym, + foreach_srv6_end_v4_d_error +#undef _ + SRV6_END_N_V4_D_ERROR, +} srv6_end_error_v4_d_t; + +typedef enum +{ +#define _(sym,str) SRV6_END_ERROR_##sym, + foreach_srv6_end_v6_e_error +#undef _ + SRV6_END_N_V6_E_ERROR, +} srv6_end_error_v6_e_t; + +typedef enum +{ +#define _(sym,str) SRV6_END_ERROR_##sym, + foreach_srv6_end_v6_d_error +#undef _ + SRV6_END_N_V6_D_ERROR, +} srv6_end_error_v6_d_t; + +typedef enum +{ +#define _(sym,str) SRV6_END_ERROR_##sym, + foreach_srv6_end_v6_d_di_error +#undef _ + SRV6_END_N_V6_D_DI_ERROR, +} srv6_end_error_v6_d_di_t; + +static char *srv6_end_error_v4_strings[] = { +#define _(sym,string) string, + foreach_srv6_end_v4_error +#undef _ +}; + +static char *srv6_end_error_v6_e_strings[] = { +#define _(sym,string) string, + foreach_srv6_end_v6_e_error +#undef _ +}; + +static char *srv6_end_error_v6_d_strings[] = { +#define _(sym,string) string, + foreach_srv6_end_v6_d_error +#undef _ +}; + +static char *srv6_end_error_v6_d_di_strings[] = { +#define _(sym,string) string, + foreach_srv6_end_v6_d_di_error +#undef _ +}; + +typedef enum +{ + SRV6_END_M_GTP4_E_NEXT_DROP, + SRV6_END_M_GTP4_E_NEXT_LOOKUP, + SRV6_END_M_GTP4_E_N_NEXT, +} srv6_end_m_gtp4_e_next_t; + +typedef enum +{ + SRV6_END_M_GTP6_E_NEXT_DROP, + SRV6_END_M_GTP6_E_NEXT_LOOKUP, + SRV6_END_M_GTP6_E_N_NEXT, +} srv6_end_m_gtp6_e_next_t; + +typedef enum +{ + SRV6_END_M_GTP6_D_NEXT_DROP, + SRV6_END_M_GTP6_D_NEXT_LOOKUP, + SRV6_END_M_GTP6_D_N_NEXT, +} srv6_end_m_gtp6_d_next_t; + +typedef enum +{ + SRV6_END_M_GTP6_D_DI_NEXT_DROP, + SRV6_END_M_GTP6_D_DI_NEXT_LOOKUP, + SRV6_END_M_GTP6_D_DI_N_NEXT, +} srv6_end_m_gtp6_d_di_next_t; + +static inline u16 +hash_uword_to_u16 (uword * key) +{ + u16 *val; + val = (u16 *) key; +#if uword_bits == 64 + return val[0] ^ val[1] ^ val[2] ^ val[3]; +#else + return val[0] ^ val[1]; +#endif +} + +static inline void +gtp_type_set (gtpu_header_t * gtpu, u16 tag) +{ + u16 val; + + val = clib_net_to_host_u16 (tag); + if (val & SRH_TAG_ECHO_REPLY) + gtpu->type = GTPU_TYPE_ECHO_REPLY; + else if (val & SRH_TAG_ECHO_REQUEST) + gtpu->type = GTPU_TYPE_ECHO_REQUEST; + else if (val & SRH_TAG_ERROR_INDICATION) + gtpu->type = GTPU_TYPE_ERROR_INDICATION; + else if (val & SRH_TAG_END_MARKER) + gtpu->type = GTPU_TYPE_END_MARKER; +} + +// Function for SRv6 GTP4.E function. +VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + srv6_end_main_v4_t *sm = &srv6_end_main_v4; + ip6_sr_main_t *sm2 = &sr_main; + u32 n_left_from, next_index, *from, *to_next; + u32 thread_index = vm->thread_index; + + u32 good_n = 0, bad_n = 0; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + ip6_sr_localsid_t *ls0; + srv6_end_gtp4_param_t *ls_param; + + ip6srv_combo_header_t *ip6srv0; + ip6_address_t src0, dst0; + + ip4_gtpu_header_t *hdr0 = NULL; + uword len0; + + u32 next0 = SRV6_END_M_GTP4_E_NEXT_LOOKUP; + + // defaults + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + ls0 = + pool_elt_at_index (sm2->localsids, + vnet_buffer (b0)->ip.adj_index[VLIB_TX]); + + ls_param = (srv6_end_gtp4_param_t *) ls0->plugin_mem; + + ip6srv0 = vlib_buffer_get_current (b0); + src0 = ip6srv0->ip.src_address; + dst0 = ip6srv0->ip.dst_address; + + len0 = vlib_buffer_length_in_chain (vm, b0); + + if ((ip6srv0->ip.protocol == IPPROTO_IPV6_ROUTE + && len0 < + sizeof (ip6srv_combo_header_t) + ip6srv0->sr.length * 8) + || (len0 < sizeof (ip6_header_t))) + { + next0 = SRV6_END_M_GTP4_E_NEXT_DROP; + + bad_n++; + } + else + { + u16 tag = 0; + u32 teid; + u8 *teid8p = (u8 *) & teid; + u8 qfi = 0; + u32 index; + u32 offset, shift; + u32 hdrlen = 0; + uword key; + u16 port; + ip4_address_t dst4; + void *p; + + // we need to be sure there is enough space before + // ip6srv0 header, there is some extra space + // in the pre_data area for this kind of + // logic + + // jump over variable length data + // not sure about the length + if (ip6srv0->ip.protocol == IPPROTO_IPV6_ROUTE) + { + tag = ip6srv0->sr.tag; + + vlib_buffer_advance (b0, + (word) sizeof (ip6srv_combo_header_t) + + ip6srv0->sr.length * 8); + } + else + { + vlib_buffer_advance (b0, (word) sizeof (ip6_header_t)); + } + + // get length of encapsulated IPv6 packet (the remaining part) + p = vlib_buffer_get_current (b0); + + len0 = vlib_buffer_length_in_chain (vm, b0); + + offset = ls0->localsid_len / 8; + shift = ls0->localsid_len % 8; + + if (PREDICT_TRUE (shift == 0)) + { + clib_memcpy_fast (&dst4.as_u8[0], &dst0.as_u8[offset], 4); + + qfi = dst0.as_u8[offset + 4]; + + clib_memcpy_fast (teid8p, &dst0.as_u8[offset + 5], 4); + } + else + { + for (index = 0; index < 4; index++) + { + dst4.as_u8[index] = dst0.as_u8[offset + index] << shift; + dst4.as_u8[index] |= + dst0.as_u8[offset + index + 1] >> (8 - shift); + } + + qfi |= dst0.as_u8[offset + 4] << shift; + qfi |= dst0.as_u8[offset + 5] >> (8 - shift); + + for (index = 0; index < 4; index++) + { + *teid8p = dst0.as_u8[offset + 5 + index] << shift; + *teid8p |= + dst0.as_u8[offset + 6 + index] >> (8 - shift); + teid8p++; + } + } + + if (qfi) + { + hdrlen = + sizeof (gtpu_exthdr_t) + sizeof (gtpu_pdu_session_t); + len0 += hdrlen; + } + hdrlen += sizeof (ip4_gtpu_header_t); + + // IPv4 GTP-U header creation. + vlib_buffer_advance (b0, -(word) hdrlen); + + hdr0 = vlib_buffer_get_current (b0); + + clib_memcpy_fast (hdr0, &sm->cache_hdr, + sizeof (ip4_gtpu_header_t)); + + hdr0->ip4.dst_address.as_u32 = dst4.as_u32; + + hdr0->gtpu.teid = teid; + hdr0->gtpu.length = clib_host_to_net_u16 (len0); + + if (PREDICT_FALSE (tag != 0)) + { + gtp_type_set (&hdr0->gtpu, tag); + } + + if (qfi) + { + u8 type = 0; + gtpu_pdu_session_t *sess; + + hdr0->gtpu.ver_flags |= GTPU_EXTHDR_FLAG; + hdr0->gtpu.ext->seq = 0; + hdr0->gtpu.ext->npdu_num = 0; + hdr0->gtpu.ext->nextexthdr = GTPU_EXTHDR_PDU_SESSION; + + type = qfi & SRV6_PDU_SESSION_U_BIT_MASK; + + qfi = + ((qfi & SRV6_PDU_SESSION_QFI_MASK) >> 2) | + ((qfi & SRV6_PDU_SESSION_R_BIT_MASK) << 5); + + sess = + (gtpu_pdu_session_t *) (((char *) hdr0) + + sizeof (ip4_gtpu_header_t) + + sizeof (gtpu_exthdr_t)); + sess->exthdrlen = 1; + sess->type = type; + sess->spare = 0; + sess->u.val = qfi; + sess->nextexthdr = 0; + } + + offset = ls_param->v4src_position / 8; + shift = ls_param->v4src_position % 8; + + if (PREDICT_TRUE (shift == 0)) + { + for (index = 0; index < 4; index++) + { + hdr0->ip4.src_address.as_u8[index] = + src0.as_u8[offset + index]; + } + } + else + { + for (index = 0; index < 4; index++) + { + hdr0->ip4.src_address.as_u8[index] = + src0.as_u8[offset + index] << shift; + hdr0->ip4.src_address.as_u8[index] |= + src0.as_u8[offset + index + 1] >> (8 - shift); + } + } + + key = hash_memory (p, len0, 0); + port = hash_uword_to_u16 (&key); + hdr0->udp.src_port = port; + + hdr0->udp.length = clib_host_to_net_u16 (len0 + + sizeof (udp_header_t) + + sizeof + (gtpu_header_t)); + + hdr0->ip4.length = clib_host_to_net_u16 (len0 + + sizeof + (ip4_gtpu_header_t)); + + hdr0->ip4.checksum = ip4_header_checksum (&hdr0->ip4); + + good_n++; + + if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && + PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + srv6_end_rewrite_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy (tr->src.as_u8, hdr0->ip4.src_address.as_u8, + sizeof (tr->src.as_u8)); + clib_memcpy (tr->dst.as_u8, hdr0->ip4.dst_address.as_u8, + sizeof (tr->dst.as_u8)); + tr->teid = hdr0->gtpu.teid; + } + } + + vlib_increment_combined_counter + (((next0 == + SRV6_END_M_GTP4_E_NEXT_DROP) ? &(sm2->sr_ls_invalid_counters) : + &(sm2->sr_ls_valid_counters)), thread_index, + ls0 - sm2->localsids, 1, vlib_buffer_length_in_chain (vm, b0)); + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, sm->end_m_gtp4_e_node_index, + SRV6_END_ERROR_M_GTP4_E_BAD_PACKETS, bad_n); + + vlib_node_increment_counter (vm, sm->end_m_gtp4_e_node_index, + SRV6_END_ERROR_M_GTP4_E_PACKETS, good_n); + + return frame->n_vectors; +} + +VLIB_REGISTER_NODE (srv6_end_m_gtp4_e) = +{ + .name = "srv6-end-m-gtp4-e",.vector_size = sizeof (u32),.format_trace = + format_srv6_end_rewrite_trace,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = + ARRAY_LEN (srv6_end_error_v4_strings),.error_strings = + srv6_end_error_v4_strings,.n_next_nodes = + SRV6_END_M_GTP4_E_N_NEXT,.next_nodes = + { + [SRV6_END_M_GTP4_E_NEXT_DROP] = + "error-drop",[SRV6_END_M_GTP4_E_NEXT_LOOKUP] = "ip4-lookup",} +,}; + +// Function for SRv6 GTP6.E function +VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + srv6_end_main_v6_t *sm = &srv6_end_main_v6; + ip6_sr_main_t *sm2 = &sr_main; + u32 n_left_from, next_index, *from, *to_next; + u32 thread_index = vm->thread_index; + + u32 good_n = 0, bad_n = 0; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + ip6_sr_localsid_t *ls0; + + ip6srv_combo_header_t *ip6srv0; + ip6_address_t dst0, src0, seg0; + + ip6_gtpu_header_t *hdr0 = NULL; + uword len0; + uword key; + u16 port; + u16 tag; + void *p; + + u32 next0 = SRV6_END_M_GTP6_E_NEXT_LOOKUP; + + // defaults + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + ls0 = + pool_elt_at_index (sm2->localsids, + vnet_buffer (b0)->ip.adj_index[VLIB_TX]); + + ip6srv0 = vlib_buffer_get_current (b0); + dst0 = ip6srv0->ip.dst_address; + src0 = ip6srv0->ip.src_address; + seg0 = ip6srv0->sr.segments[0]; + + tag = ip6srv0->sr.tag; + + len0 = vlib_buffer_length_in_chain (vm, b0); + + if ((ip6srv0->ip.protocol != IPPROTO_IPV6_ROUTE) + || (len0 < + sizeof (ip6srv_combo_header_t) + 8 * ip6srv0->sr.length)) + { + next0 = SRV6_END_M_GTP6_E_NEXT_DROP; + + bad_n++; + } + else + { + // we need to be sure there is enough space before + // ip6srv0 header, there is some extra space + // in the pre_data area for this kind of + // logic + + // jump over variable length data + // not sure about the length + vlib_buffer_advance (b0, (word) sizeof (ip6srv_combo_header_t) + + ip6srv0->sr.length * 8); + + // get length of encapsulated IPv6 packet (the remaining part) + p = vlib_buffer_get_current (b0); + + len0 = vlib_buffer_length_in_chain (vm, b0); + + u32 teid; + u8 *teid8p = (u8 *) & teid; + u8 qfi = 0; + u16 index; + u16 offset, shift; + u32 hdrlen = 0; + + index = ls0->localsid_len; + index += 8; + offset = index / 8; + shift = index % 8; + + if (PREDICT_TRUE (shift == 0)) + { + clib_memcpy_fast (teid8p, &dst0.as_u8[offset], 4); + + qfi = dst0.as_u8[offset + 4]; + } + else + { + for (index = offset; index < offset + 4; index++) + { + *teid8p = dst0.as_u8[index] << shift; + *teid8p |= dst0.as_u8[index + 1] >> (8 - shift); + teid8p++; + } + + qfi |= dst0.as_u8[offset + 4] << shift; + qfi |= dst0.as_u8[offset + 5] >> (8 - shift); + } + + if (qfi) + { + hdrlen = + sizeof (gtpu_exthdr_t) + sizeof (gtpu_pdu_session_t); + len0 += hdrlen; + } + hdrlen += sizeof (ip6_gtpu_header_t); + + vlib_buffer_advance (b0, -(word) hdrlen); + + hdr0 = vlib_buffer_get_current (b0); + + clib_memcpy_fast (hdr0, &sm->cache_hdr, + sizeof (ip6_gtpu_header_t)); + + hdr0->gtpu.teid = teid; + hdr0->gtpu.length = clib_host_to_net_u16 (len0); + + if (PREDICT_FALSE (tag != 0)) + { + gtp_type_set (&hdr0->gtpu, tag); + } + + if (qfi) + { + u8 type = 0; + gtpu_pdu_session_t *sess; + + hdr0->gtpu.ver_flags |= GTPU_EXTHDR_FLAG; + hdr0->gtpu.ext->seq = 0; + hdr0->gtpu.ext->npdu_num = 0; + hdr0->gtpu.ext->nextexthdr = GTPU_EXTHDR_PDU_SESSION; + + type = qfi & SRV6_PDU_SESSION_U_BIT_MASK; + + qfi = + ((qfi & SRV6_PDU_SESSION_QFI_MASK) >> 2) | + ((qfi & SRV6_PDU_SESSION_R_BIT_MASK) << 5); + + sess = + (gtpu_pdu_session_t *) (((char *) hdr0) + + sizeof (ip6_gtpu_header_t) + + sizeof (gtpu_exthdr_t)); + sess->exthdrlen = 1; + sess->type = type; + sess->spare = 0; + sess->u.val = qfi; + sess->nextexthdr = 0; + } + + hdr0->udp.length = clib_host_to_net_u16 (len0 + + sizeof (udp_header_t) + + sizeof + (gtpu_header_t)); + + clib_memcpy_fast (hdr0->ip6.src_address.as_u8, src0.as_u8, + sizeof (ip6_address_t)); + clib_memcpy_fast (hdr0->ip6.dst_address.as_u8, &seg0.as_u8, + sizeof (ip6_address_t)); + + hdr0->ip6.payload_length = clib_host_to_net_u16 (len0 + + sizeof + (udp_header_t) + + + sizeof + (gtpu_header_t)); + + // UDP source port. + key = hash_memory (p, len0, 0); + port = hash_uword_to_u16 (&key); + hdr0->udp.src_port = port; + + good_n++; + + if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && + PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + srv6_end_rewrite_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy (tr->src.as_u8, hdr0->ip6.src_address.as_u8, + sizeof (ip6_address_t)); + clib_memcpy (tr->dst.as_u8, hdr0->ip6.dst_address.as_u8, + sizeof (ip6_address_t)); + tr->teid = hdr0->gtpu.teid; + } + } + + vlib_increment_combined_counter + (((next0 == + SRV6_END_M_GTP6_E_NEXT_DROP) ? &(sm2->sr_ls_invalid_counters) : + &(sm2->sr_ls_valid_counters)), thread_index, + ls0 - sm2->localsids, 1, vlib_buffer_length_in_chain (vm, b0)); + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, sm->end_m_gtp6_e_node_index, + SRV6_END_ERROR_M_GTP6_E_BAD_PACKETS, bad_n); + + vlib_node_increment_counter (vm, sm->end_m_gtp6_e_node_index, + SRV6_END_ERROR_M_GTP6_E_PACKETS, good_n); + + return frame->n_vectors; +} + +// Function for SRv6 GTP6.D function +VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + srv6_end_main_v6_decap_t *sm = &srv6_end_main_v6_decap; + ip6_sr_main_t *sm2 = &sr_main; + u32 n_left_from, next_index, *from, *to_next; + u32 thread_index = vm->thread_index; + + u32 good_n = 0, bad_n = 0; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + ip6_sr_localsid_t *ls0; + srv6_end_gtp6_param_t *ls_param; + + ip6_gtpu_header_t *hdr0 = NULL; + uword len0; + + ip6_address_t seg0, src0; + u32 teid = 0; + u8 *teidp; + u8 gtpu_type = 0; + u8 qfi; + u8 *qfip = NULL; + u32 offset, shift; + u32 hdrlen; + ip6_header_t *encap = NULL; + gtpu_pdu_session_t *sess = NULL; + + u32 next0 = SRV6_END_M_GTP6_D_NEXT_LOOKUP; + + // defaults + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + ls0 = + pool_elt_at_index (sm2->localsids, + vnet_buffer (b0)->ip.adj_index[VLIB_TX]); + + ls_param = (srv6_end_gtp6_param_t *) ls0->plugin_mem; + + hdr0 = vlib_buffer_get_current (b0); + + hdrlen = sizeof (ip6_gtpu_header_t); + + len0 = vlib_buffer_length_in_chain (vm, b0); + + if ((hdr0->ip6.protocol != IP_PROTOCOL_UDP) + || (hdr0->udp.dst_port != + clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT)) + || (len0 < sizeof (ip6_gtpu_header_t))) + { + next0 = SRV6_END_M_GTP6_D_NEXT_DROP; + + bad_n++; + } + else + { + seg0 = ls_param->sr_prefix; + src0 = hdr0->ip6.src_address; + + gtpu_type = hdr0->gtpu.type; + + teid = hdr0->gtpu.teid; + teidp = (u8 *) & teid; + + if (hdr0->gtpu.ver_flags & GTPU_EXTHDR_FLAG) + { + // Extention header. + hdrlen += sizeof (gtpu_exthdr_t); + if (hdr0->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION) + { + // PDU Session Container. + sess = + (gtpu_pdu_session_t *) (((char *) hdr0) + + sizeof (ip6_gtpu_header_t) + + sizeof (gtpu_exthdr_t)); + qfi = sess->u.val & ~GTPU_PDU_SESSION_P_BIT_MASK; + qfip = (u8 *) & qfi; + + hdrlen += sizeof (gtpu_pdu_session_t); + + if (sess->u.val & GTPU_PDU_SESSION_P_BIT_MASK) + { + hdrlen += sizeof (gtpu_paging_policy_t); + } + } + } + + offset = ls_param->sr_prefixlen / 8; + shift = ls_param->sr_prefixlen % 8; + + offset += 1; + if (PREDICT_TRUE (shift == 0)) + { + clib_memcpy_fast (&seg0.as_u8[offset], teidp, 4); + if (qfip) + { + qfi = + ((qfi & GTPU_PDU_SESSION_QFI_MASK) << 2) | + ((qfi & GTPU_PDU_SESSION_R_BIT_MASK) >> 5); + + if (sess->type) + { + qfi |= SRV6_PDU_SESSION_U_BIT_MASK; + } + + seg0.as_u8[offset + 4] = qfi; + } + } + else + { + int idx; + + for (idx = 0; idx < 4; idx++) + { + seg0.as_u8[offset + idx] |= teidp[idx] >> shift; + seg0.as_u8[offset + idx + 1] |= + teidp[idx] << (8 - shift); + } + + if (qfip) + { + qfi = + ((qfi & GTPU_PDU_SESSION_QFI_MASK) << 2) | + ((qfi & ~GTPU_PDU_SESSION_R_BIT_MASK) >> 5); + + if (sess->type) + { + qfi |= SRV6_PDU_SESSION_U_BIT_MASK; + } + + seg0.as_u8[offset + 4] |= qfi >> shift; + seg0.as_u8[offset + 5] |= qfi << (8 - shift); + } + } + + // jump over variable length data + vlib_buffer_advance (b0, (word) hdrlen); + + // get length of encapsulated IPv6 packet (the remaining part) + len0 = vlib_buffer_length_in_chain (vm, b0); + + if (PREDICT_TRUE (gtpu_type == GTPU_TYPE_GTPU)) + { + encap = vlib_buffer_get_current (b0); + } + + uword *p; + ip6srv_combo_header_t *ip6srv; + ip6_sr_policy_t *sr_policy = NULL; + ip6_sr_sl_t *sl = NULL; + u32 *sl_index; + u32 hdr_len; + + p = + mhash_get (&sm2->sr_policies_index_hash, + &ls_param->sr_prefix); + if (p) + { + sr_policy = pool_elt_at_index (sm2->sr_policies, p[0]); + } + + if (sr_policy) + { + vec_foreach (sl_index, sr_policy->segments_lists) + { + sl = pool_elt_at_index (sm2->sid_lists, *sl_index); + if (sl != NULL) + break; + } + } + + if (sl) + { + hdr_len = sizeof (ip6srv_combo_header_t); + hdr_len += vec_len (sl->segments) * sizeof (ip6_address_t); + hdr_len += sizeof (ip6_address_t); + } + else + { + hdr_len = sizeof (ip6_header_t); + if (PREDICT_FALSE (gtpu_type) != GTPU_TYPE_GTPU) + { + hdr_len += sizeof (ip6_sr_header_t); + hdr_len += sizeof (ip6_address_t); + } + } + + // jump back to data[0] or pre_data if required + vlib_buffer_advance (b0, -(word) hdr_len); + + ip6srv = vlib_buffer_get_current (b0); + + if (sl) + { + clib_memcpy_fast (ip6srv, sl->rewrite, + vec_len (sl->rewrite)); + + ip6srv->ip.src_address = src0; + ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE; + + ip6srv->sr.tag = + clib_host_to_net_u16 (srh_tagfield[gtpu_type]); + + ip6srv->sr.segments_left += 1; + ip6srv->sr.last_entry += 1; + + ip6srv->sr.length += sizeof (ip6_address_t) / 8; + ip6srv->sr.segments[0] = seg0; + + if (PREDICT_TRUE (encap != NULL)) + { + if (ls_param->nhtype == SRV6_NHTYPE_NONE) + { + if ((clib_net_to_host_u32 + (encap->ip_version_traffic_class_and_flow_label) + >> 28) == 6) + ip6srv->sr.protocol = IP_PROTOCOL_IPV6; + else + ip6srv->sr.protocol = IP_PROTOCOL_IP_IN_IP; + } + else if (ls_param->nhtype == SRV6_NHTYPE_IPV4) + { + ip6srv->sr.protocol = IP_PROTOCOL_IP_IN_IP; + if ((clib_net_to_host_u32 + (encap->ip_version_traffic_class_and_flow_label) + >> 28) != 4) + { + // Bad encap packet. + next0 = SRV6_END_M_GTP6_D_NEXT_DROP; + bad_n++; + goto DONE; + } + } + else if (ls_param->nhtype == SRV6_NHTYPE_IPV6) + { + ip6srv->sr.protocol = IP_PROTOCOL_IPV6; + if ((clib_net_to_host_u32 + (encap->ip_version_traffic_class_and_flow_label) + >> 28) != 6) + { + // Bad encap packet. + next0 = SRV6_END_M_GTP6_D_NEXT_DROP; + bad_n++; + goto DONE; + } + } + else if (ls_param->nhtype == SRV6_NHTYPE_NON_IP) + { + ip6srv->sr.protocol = IP_PROTOCOL_NONE; + } + } + else + { + ip6srv->sr.protocol = IP_PROTOCOL_NONE; + } + + clib_memcpy_fast (&ip6srv->sr.segments[1], + (u8 *) (sl->rewrite + + sizeof (ip6_header_t) + + sizeof (ip6_sr_header_t)), + vec_len (sl->segments) * + sizeof (ip6_address_t)); + } + else + { + clib_memcpy_fast (ip6srv, &sm->cache_hdr, + sizeof (ip6_header_t)); + + ip6srv->ip.src_address = src0; + ip6srv->ip.dst_address = seg0; + + if (PREDICT_FALSE (gtpu_type) != GTPU_TYPE_GTPU) + { + ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE; + + ip6srv->sr.protocol = IP_PROTOCOL_NONE; + + ip6srv->sr.tag = + clib_host_to_net_u16 (srh_tagfield[gtpu_type]); + + ip6srv->sr.segments_left = 0; + ip6srv->sr.last_entry = 0; + + ip6srv->sr.length = sizeof (ip6_address_t) / 8; + ip6srv->sr.segments[0] = seg0; + } + else + { + if (ls_param->nhtype == SRV6_NHTYPE_NONE) + { + if ((clib_net_to_host_u32 + (encap->ip_version_traffic_class_and_flow_label) + >> 28) != 6) + ip6srv->ip.protocol = IP_PROTOCOL_IP_IN_IP; + } + else if (ls_param->nhtype == SRV6_NHTYPE_IPV4) + { + ip6srv->ip.protocol = IP_PROTOCOL_IP_IN_IP; + if ((clib_net_to_host_u32 + (encap->ip_version_traffic_class_and_flow_label) + >> 28) != 4) + { + // Bad encap packet. + next0 = SRV6_END_M_GTP6_D_NEXT_DROP; + bad_n++; + goto DONE; + } + } + else if (ls_param->nhtype == SRV6_NHTYPE_IPV6) + { + ip6srv->ip.protocol = IP_PROTOCOL_IPV6; + if ((clib_net_to_host_u32 + (encap->ip_version_traffic_class_and_flow_label) + >> 28) != 6) + { + // Bad encap packet. + next0 = SRV6_END_M_GTP6_D_NEXT_DROP; + bad_n++; + goto DONE; + } + } + else if (ls_param->nhtype == SRV6_NHTYPE_NON_IP) + { + ip6srv->ip.protocol = IP_PROTOCOL_NONE; + } + } + } + + ip6srv->ip.payload_length = + clib_host_to_net_u16 (len0 + hdr_len - sizeof (ip6_header_t)); + + good_n++; + + if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && + PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + srv6_end_rewrite_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy (tr->src.as_u8, ip6srv->ip.src_address.as_u8, + sizeof (ip6_address_t)); + clib_memcpy (tr->dst.as_u8, ip6srv->ip.dst_address.as_u8, + sizeof (ip6_address_t)); + tr->teid = teid; + clib_memcpy (tr->sr_prefix.as_u8, ls_param->sr_prefix.as_u8, + sizeof (ip6_address_t)); + tr->sr_prefixlen = ls_param->sr_prefixlen; + } + } + + DONE: + vlib_increment_combined_counter + (((next0 == + SRV6_END_M_GTP6_D_NEXT_DROP) ? &(sm2->sr_ls_invalid_counters) : + &(sm2->sr_ls_valid_counters)), thread_index, + ls0 - sm2->localsids, 1, vlib_buffer_length_in_chain (vm, b0)); + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, sm->end_m_gtp6_d_node_index, + SRV6_END_ERROR_M_GTP6_D_BAD_PACKETS, bad_n); + + vlib_node_increment_counter (vm, sm->end_m_gtp6_d_node_index, + SRV6_END_ERROR_M_GTP6_D_PACKETS, good_n); + + return frame->n_vectors; +} + +// Function for SRv6 GTP6.D.DI function +VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + srv6_end_main_v6_decap_di_t *sm = &srv6_end_main_v6_decap_di; + ip6_sr_main_t *sm2 = &sr_main; + u32 n_left_from, next_index, *from, *to_next; + u32 thread_index = vm->thread_index; + srv6_end_gtp6_param_t *ls_param; + + u32 good_n = 0, bad_n = 0; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + ip6_sr_localsid_t *ls0; + + ip6_gtpu_header_t *hdr0 = NULL; + uword len0; + + ip6_address_t dst0; + ip6_address_t src0; + ip6_address_t seg0; + u32 teid = 0; + u8 *teidp; + u8 gtpu_type = 0; + u8 qfi = 0; + u8 *qfip = NULL; + u32 offset, shift; + u32 hdrlen; + ip6_header_t *encap = NULL; + gtpu_pdu_session_t *sess; + + u32 next0 = SRV6_END_M_GTP6_D_DI_NEXT_LOOKUP; + + // defaults + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + ls0 = + pool_elt_at_index (sm2->localsids, + vnet_buffer (b0)->ip.adj_index[VLIB_TX]); + + ls_param = (srv6_end_gtp6_param_t *) ls0->plugin_mem; + + hdr0 = vlib_buffer_get_current (b0); + + hdrlen = sizeof (ip6_gtpu_header_t); + + len0 = vlib_buffer_length_in_chain (vm, b0); + + if ((hdr0->ip6.protocol != IP_PROTOCOL_UDP) + || (hdr0->udp.dst_port != + clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT)) + || (len0 < sizeof (ip6_gtpu_header_t))) + { + next0 = SRV6_END_M_GTP6_D_DI_NEXT_DROP; + + bad_n++; + } + else + { + dst0 = hdr0->ip6.dst_address; + src0 = hdr0->ip6.src_address; + + gtpu_type = hdr0->gtpu.type; + + seg0 = ls_param->sr_prefix; + teid = hdr0->gtpu.teid; + teidp = (u8 *) & teid; + + if (hdr0->gtpu.ver_flags & GTPU_EXTHDR_FLAG) + { + // Extention header. + hdrlen += sizeof (gtpu_exthdr_t); + if (hdr0->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION) + { + // PDU Session Container. + sess = + (gtpu_pdu_session_t *) (((char *) hdr0) + hdrlen); + qfi = sess->u.val & ~GTPU_PDU_SESSION_P_BIT_MASK; + qfip = &qfi; + + hdrlen += sizeof (gtpu_pdu_session_t); + + if (sess->u.val & GTPU_PDU_SESSION_P_BIT_MASK) + { + hdrlen += sizeof (gtpu_paging_policy_t); + } + } + } + + offset = ls_param->sr_prefixlen / 8; + shift = ls_param->sr_prefixlen % 8; + + offset += 1; + if (PREDICT_TRUE (shift == 0)) + { + clib_memcpy_fast (&seg0.as_u8[offset], teidp, 4); + + if (qfip) + { + qfi = + ((qfi & GTPU_PDU_SESSION_QFI_MASK) << 2) | + ((qfi & GTPU_PDU_SESSION_R_BIT_MASK) >> 5); + + if (sess->type) + { + qfi |= SRV6_PDU_SESSION_U_BIT_MASK; + } + + seg0.as_u8[offset + 4] = qfi; + } + } + else + { + int idx; + + for (idx = 0; idx < 4; idx++) + { + seg0.as_u8[offset + idx] |= teidp[idx] >> shift; + seg0.as_u8[offset + idx + 1] |= + teidp[idx] << (8 - shift); + } + + if (qfip) + { + qfi = + ((qfi & GTPU_PDU_SESSION_QFI_MASK) << 2) | + ((qfi & GTPU_PDU_SESSION_R_BIT_MASK) >> 5); + + if (sess->type) + { + qfi |= SRV6_PDU_SESSION_U_BIT_MASK; + } + + seg0.as_u8[offset + 4] |= qfi >> shift; + seg0.as_u8[offset + 5] |= qfi << (8 - shift); + } + } + + // jump over variable length data + vlib_buffer_advance (b0, (word) hdrlen); + + // get length of encapsulated IPv6 packet (the remaining part) + len0 = vlib_buffer_length_in_chain (vm, b0); + + if (PREDICT_TRUE (gtpu_type == GTPU_TYPE_GTPU)) + { + encap = vlib_buffer_get_current (b0); + } + + uword *p; + ip6srv_combo_header_t *ip6srv; + ip6_sr_policy_t *sr_policy = NULL; + ip6_sr_sl_t *sl = NULL; + u32 *sl_index; + u32 hdr_len; + + p = + mhash_get (&sm2->sr_policies_index_hash, + &ls_param->sr_prefix); + if (p) + { + sr_policy = pool_elt_at_index (sm2->sr_policies, p[0]); + } + + if (sr_policy) + { + vec_foreach (sl_index, sr_policy->segments_lists) + { + sl = pool_elt_at_index (sm2->sid_lists, *sl_index); + if (sl != NULL) + break; + } + } + + hdr_len = sizeof (ip6srv_combo_header_t); + + if (sl) + hdr_len += vec_len (sl->segments) * sizeof (ip6_address_t); + + hdr_len += sizeof (ip6_address_t) * 2; + + // jump back to data[0] or pre_data if required + vlib_buffer_advance (b0, -(word) hdr_len); + + ip6srv = vlib_buffer_get_current (b0); + + if (sl) + { + clib_memcpy_fast (ip6srv, sl->rewrite, + vec_len (sl->rewrite)); + + ip6srv->ip.src_address = src0; + + ip6srv->sr.tag = + clib_host_to_net_u16 (srh_tagfield[gtpu_type]); + + ip6srv->sr.segments_left += 2; + ip6srv->sr.last_entry += 2; + } + else + { + clib_memcpy_fast (ip6srv, &sm->cache_hdr, + sizeof (ip6_header_t)); + + ip6srv->ip.src_address = src0; + ip6srv->ip.dst_address = seg0; + + ip6srv->sr.tag = + clib_host_to_net_u16 (srh_tagfield[gtpu_type]); + + ip6srv->sr.segments_left += 1; + ip6srv->sr.last_entry += 1; + ip6srv->sr.type = ROUTING_HEADER_TYPE_SR; + } + + ip6srv->ip.payload_length = + clib_host_to_net_u16 (len0 + hdr_len - sizeof (ip6_header_t)); + ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE; + + if (PREDICT_TRUE (encap != NULL)) + { + if (ls_param->nhtype == SRV6_NHTYPE_NONE) + { + if ((clib_net_to_host_u32 + (encap->ip_version_traffic_class_and_flow_label) >> + 28) == 6) + ip6srv->sr.protocol = IP_PROTOCOL_IPV6; + else + ip6srv->sr.protocol = IP_PROTOCOL_IP_IN_IP; + } + else if (ls_param->nhtype == SRV6_NHTYPE_IPV4) + { + ip6srv->sr.protocol = IP_PROTOCOL_IP_IN_IP; + if ((clib_net_to_host_u32 + (encap->ip_version_traffic_class_and_flow_label) >> + 28) != 4) + { + // Bad encap packet. + next0 = SRV6_END_M_GTP6_D_DI_NEXT_DROP; + bad_n++; + goto DONE; + } + } + else if (ls_param->nhtype == SRV6_NHTYPE_IPV6) + { + ip6srv->sr.protocol = IP_PROTOCOL_IPV6; + if ((clib_net_to_host_u32 + (encap->ip_version_traffic_class_and_flow_label) >> + 28) != 6) + { + // Bad encap packet. + next0 = SRV6_END_M_GTP6_D_DI_NEXT_DROP; + bad_n++; + goto DONE; + } + } + else if (ls_param->nhtype == SRV6_NHTYPE_NON_IP) + { + ip6srv->sr.protocol = IP_PROTOCOL_NONE; + } + } + else + { + ip6srv->sr.protocol = IP_PROTOCOL_NONE; + } + + ip6srv->sr.length += ((sizeof (ip6_address_t) * 2) / 8); + ip6srv->sr.segments[0] = dst0; + ip6srv->sr.segments[1] = seg0; + + if (sl) + { + clib_memcpy_fast (&ip6srv->sr.segments[2], + (u8 *) (sl->rewrite + + sizeof (ip6_header_t) + + sizeof (ip6_sr_header_t)), + vec_len (sl->segments) * + sizeof (ip6_address_t)); + } + + good_n++; + + if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && + PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + srv6_end_rewrite_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy (tr->src.as_u8, ip6srv->ip.src_address.as_u8, + sizeof (ip6_address_t)); + clib_memcpy (tr->dst.as_u8, ip6srv->ip.dst_address.as_u8, + sizeof (ip6_address_t)); + tr->teid = teid; + clib_memcpy (tr->sr_prefix.as_u8, ls_param->sr_prefix.as_u8, + sizeof (ip6_address_t)); + tr->sr_prefixlen = ls_param->sr_prefixlen; + } + } + + DONE: + vlib_increment_combined_counter + (((next0 == + SRV6_END_M_GTP6_D_DI_NEXT_DROP) ? + &(sm2->sr_ls_invalid_counters) : &(sm2->sr_ls_valid_counters)), + thread_index, ls0 - sm2->localsids, 1, + vlib_buffer_length_in_chain (vm, b0)); + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, sm->end_m_gtp6_d_di_node_index, + SRV6_END_ERROR_M_GTP6_D_DI_BAD_PACKETS, bad_n); + + vlib_node_increment_counter (vm, sm->end_m_gtp6_d_di_node_index, + SRV6_END_ERROR_M_GTP6_D_DI_PACKETS, good_n); + + return frame->n_vectors; +} + +VLIB_REGISTER_NODE (srv6_end_m_gtp6_e) = +{ + .name = "srv6-end-m-gtp6-e",.vector_size = sizeof (u32),.format_trace = + format_srv6_end_rewrite_trace6,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = + ARRAY_LEN (srv6_end_error_v6_e_strings),.error_strings = + srv6_end_error_v6_e_strings,.n_next_nodes = + SRV6_END_M_GTP6_E_N_NEXT,.next_nodes = + { + [SRV6_END_M_GTP6_E_NEXT_DROP] = + "error-drop",[SRV6_END_M_GTP6_E_NEXT_LOOKUP] = "ip6-lookup",} +,}; + +VLIB_REGISTER_NODE (srv6_end_m_gtp6_d) = +{ + .name = "srv6-end-m-gtp6-d",.vector_size = sizeof (u32),.format_trace = + format_srv6_end_rewrite_trace6,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = + ARRAY_LEN (srv6_end_error_v6_d_strings),.error_strings = + srv6_end_error_v6_d_strings,.n_next_nodes = + SRV6_END_M_GTP6_D_N_NEXT,.next_nodes = + { + [SRV6_END_M_GTP6_D_NEXT_DROP] = + "error-drop",[SRV6_END_M_GTP6_D_NEXT_LOOKUP] = "ip6-lookup",} +,}; + +VLIB_REGISTER_NODE (srv6_end_m_gtp6_d_di) = +{ + .name = "srv6-end-m-gtp6-d-di",.vector_size = sizeof (u32),.format_trace = + format_srv6_end_rewrite_trace6,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = + ARRAY_LEN (srv6_end_error_v6_d_di_strings),.error_strings = + srv6_end_error_v6_d_di_strings,.n_next_nodes = + SRV6_END_M_GTP6_D_DI_N_NEXT,.next_nodes = + { + [SRV6_END_M_GTP6_D_DI_NEXT_DROP] = "error-drop", + [SRV6_END_M_GTP6_D_DI_NEXT_LOOKUP] = "ip6-lookup",} +,}; + +/* +* fd.io coding-style-patch-verification: ON +* +* Local Variables: +* eval: (c-set-style "gnu") +* End: +*/ diff --git a/src/plugins/srv6-mobile/test/test_srv6_end.py b/src/plugins/srv6-mobile/test/test_srv6_end.py new file mode 100644 index 00000000000..4e2a5765bab --- /dev/null +++ b/src/plugins/srv6-mobile/test/test_srv6_end.py @@ -0,0 +1,161 @@ +#!/usr/bin/env python + +from framework import VppTestCase +from ipaddress import IPv4Address +from ipaddress import IPv6Address +from scapy.contrib.gtp import * +from scapy.all import * + + +class TestSRv6EndMGTP4E(VppTestCase): + """ SRv6 End.M.GTP4.E (SRv6 -> GTP-U) """ + + @classmethod + def setUpClass(cls): + super(TestSRv6EndMGTP4E, cls).setUpClass() + try: + cls.create_pg_interfaces(range(2)) + cls.pg_if_i = cls.pg_interfaces[0] + cls.pg_if_o = cls.pg_interfaces[1] + + cls.pg_if_i.config_ip6() + cls.pg_if_o.config_ip4() + + cls.ip4_dst = cls.pg_if_o.remote_ip4 + # cls.ip4_src = cls.pg_if_o.local_ip4 + cls.ip4_src = "192.168.192.10" + + for pg_if in cls.pg_interfaces: + pg_if.admin_up() + pg_if.resolve_arp() + + except Exception: + super(TestSRv6EndMGTP4E, cls).tearDownClass() + raise + + def create_packets(self, inner): + + ip4_dst = IPv4Address(str(self.ip4_dst)) + # 32bit prefix + 32bit IPv4 DA + 8bit + 32bit TEID + 24bit + dst = b'\xaa' * 4 + ip4_dst.packed + \ + b'\x11' + b'\xbb' * 4 + b'\x11' * 3 + ip6_dst = IPv6Address(dst) + + ip4_src = IPv4Address(str(self.ip4_src)) + # 64bit prefix + 32bit IPv4 SA + 16 bit port + 16bit + src = b'\xcc' * 8 + ip4_src.packed + \ + b'\xdd' * 2 + b'\x11' * 2 + ip6_src = IPv6Address(src) + + self.logger.info("ip4 dst: {}".format(ip4_dst)) + self.logger.info("ip4 src: {}".format(ip4_src)) + self.logger.info("ip6 dst (remote srgw): {}".format(ip6_dst)) + self.logger.info("ip6 src (local srgw): {}".format(ip6_src)) + + pkts = list() + for d, s in inner: + pkt = (Ether() / + IPv6(dst=str(ip6_dst), src=str(ip6_src)) / + IPv6ExtHdrSegmentRouting() / + IPv6(dst=d, src=s) / + UDP(sport=1000, dport=23)) + + self.logger.info(pkt.show2()) + pkts.append(pkt) + + return pkts + + def test_srv6_end(self): + """ test_srv6_end """ + pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")]) + + self.vapi.cli( + "sr localsid address {} behavior end.m.gtp4.e v4src_position 64" + .format(pkts[0]['IPv6'].dst)) + self.logger.info(self.vapi.cli("show sr localsids")) + + self.vapi.cli("clear errors") + + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.logger.info(self.vapi.cli("show errors")) + self.logger.info(self.vapi.cli("show int address")) + + capture = self.pg1.get_capture(len(pkts)) + + for pkt in capture: + self.logger.info(pkt.show2()) + self.assertEqual(pkt[IP].dst, self.ip4_dst) + self.assertEqual(pkt[IP].src, self.ip4_src) + self.assertEqual(pkt[GTP_U_Header].teid, 0xbbbbbbbb) + + +class TestSRv6TMTmap(VppTestCase): + """ SRv6 T.M.Tmap (GTP-U -> SRv6) """ + + @classmethod + def setUpClass(cls): + super(TestSRv6TMTmap, cls).setUpClass() + try: + cls.create_pg_interfaces(range(2)) + cls.pg_if_i = cls.pg_interfaces[0] + cls.pg_if_o = cls.pg_interfaces[1] + + cls.pg_if_i.config_ip4() + cls.pg_if_o.config_ip6() + + for pg_if in cls.pg_interfaces: + pg_if.admin_up() + pg_if.resolve_arp() + + except Exception: + super(TestSRv6TMTmap, cls).tearDownClass() + raise + + +class TestSRv6EndMGTP6E(VppTestCase): + """ SRv6 End.M.GTP6.E """ + + @classmethod + def setUpClass(cls): + super(TestSRv6EndMGTP6E, cls).setUpClass() + try: + cls.create_pg_interfaces(range(2)) + cls.pg_if_i = cls.pg_interfaces[0] + cls.pg_if_o = cls.pg_interfaces[1] + + cls.pg_if_i.config_ip4() + cls.pg_if_o.config_ip6() + + for pg_if in cls.pg_interfaces: + pg_if.admin_up() + pg_if.resolve_arp() + + except Exception: + super(TestSRv6EndMGTP6E, cls).tearDownClass() + raise + + +class TestSRv6EndMGTP6D(VppTestCase): + """ SRv6 End.M.GTP6.D """ + + @classmethod + def setUpClass(cls): + super(TestSRv6EndMGTP6D, cls).setUpClass() + try: + cls.create_pg_interfaces(range(2)) + cls.pg_if_i = cls.pg_interfaces[0] + cls.pg_if_o = cls.pg_interfaces[1] + + cls.pg_if_i.config_ip4() + cls.pg_if_o.config_ip6() + + for pg_if in cls.pg_interfaces: + pg_if.admin_up() + pg_if.resolve_arp() + + except Exception: + super(TestSRv6EndMGTP6D, cls).tearDownClass() + raise diff --git a/src/vat/api_format.c b/src/vat/api_format.c index e1e8bfee57a..7b5d5949159 100644 --- a/src/vat/api_format.c +++ b/src/vat/api_format.c @@ -9796,6 +9796,7 @@ api_sr_localsid_add_del (vat_main_t * vam) M (SR_LOCALSID_ADD_DEL, mp); clib_memcpy (mp->localsid.addr, &localsid, sizeof (mp->localsid)); + if (nexthop_set) { clib_memcpy (mp->nh_addr6, &nh_addr6, sizeof (mp->nh_addr6)); diff --git a/src/vnet/srv6/sr.h b/src/vnet/srv6/sr.h index 2e2d43978bf..11935833394 100755 --- a/src/vnet/srv6/sr.h +++ b/src/vnet/srv6/sr.h @@ -54,6 +54,14 @@ #define SR_SEGMENT_LIST_WEIGHT_DEFAULT 1 +/* *INDENT-OFF* */ +typedef struct +{ + ip6_header_t ip; + ip6_sr_header_t sr; +} __attribute__ ((packed)) ip6srv_combo_header_t; +/* *INDENT-ON* */ + /** * @brief SR Segment List (SID list) */ @@ -103,6 +111,8 @@ typedef struct { ip6_address_t localsid; /**< LocalSID IPv6 address */ + u16 localsid_len; + char end_psp; /**< Combined with End.PSP? */ u16 behavior; /**< Behavior associated to this localsid */ @@ -141,6 +151,8 @@ typedef struct u8 *params_str; /**< Behavior parameters (i.e. <oif> <IP46next_hop>) */ + u8 prefix_length; + dpo_type_t dpo; /**< DPO type registration */ format_function_t *ls_format; /**< LocalSID format function */ @@ -250,7 +262,8 @@ extern void sr_dpo_unlock (dpo_id_t * dpo); extern int sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name, u8 * keyword_str, u8 * def_str, - u8 * params_str, dpo_type_t * dpo, + u8 * params_str, u8 prefix_length, + dpo_type_t * dpo, format_function_t * ls_format, unformat_function_t * ls_unformat, sr_plugin_callback_t * creation_fn, @@ -259,14 +272,13 @@ sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name, extern int sr_policy_add (ip6_address_t * bsid, ip6_address_t * segments, u32 weight, u8 behavior, u32 fib_table, u8 is_encap); -extern int -sr_policy_mod (ip6_address_t * bsid, u32 index, u32 fib_table, - u8 operation, ip6_address_t * segments, u32 sl_index, - u32 weight); +extern int sr_policy_mod (ip6_address_t * bsid, u32 index, u32 fib_table, + u8 operation, ip6_address_t * segments, + u32 sl_index, u32 weight); extern int sr_policy_del (ip6_address_t * bsid, u32 index); extern int -sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, +sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, u16 prefixlen, char end_psp, u8 behavior, u32 sw_if_index, u32 vlan_index, u32 fib_table, ip46_address_t * nh_addr, void *ls_plugin_mem); diff --git a/src/vnet/srv6/sr_api.c b/src/vnet/srv6/sr_api.c index f3738da668d..940336d9859 100644 --- a/src/vnet/srv6/sr_api.c +++ b/src/vnet/srv6/sr_api.c @@ -80,7 +80,7 @@ static void vl_api_sr_localsid_add_del_t_handler memcpy (&prefix.ip6, mp->nh_addr6, sizeof (prefix.ip6)); rv = sr_cli_localsid (mp->is_del, - (ip6_address_t *) & mp->localsid, + (ip6_address_t *) & mp->localsid, 0, mp->end_psp, mp->behavior, ntohl (mp->sw_if_index), diff --git a/src/vnet/srv6/sr_localsid.c b/src/vnet/srv6/sr_localsid.c index c592f797d1c..05651bb1857 100755 --- a/src/vnet/srv6/sr_localsid.c +++ b/src/vnet/srv6/sr_localsid.c @@ -63,13 +63,15 @@ static dpo_type_t sr_localsid_d_dpo_type; * @return 0 on success, error otherwise. */ int -sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, +sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, u16 prefixlen, char end_psp, u8 behavior, u32 sw_if_index, u32 vlan_index, u32 fib_table, ip46_address_t * nh_addr, void *ls_plugin_mem) { ip6_sr_main_t *sm = &sr_main; uword *p; int rv; + u8 pref_length = 128; + sr_localsid_fn_registration_t *plugin = 0; ip6_sr_localsid_t *ls = 0; @@ -84,18 +86,30 @@ sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, { /* Retrieve localsid */ ls = pool_elt_at_index (sm->localsids, p[0]); + if (ls->behavior >= SR_BEHAVIOR_LAST) + { + plugin = pool_elt_at_index (sm->plugin_functions, + ls->behavior - SR_BEHAVIOR_LAST); + pref_length = plugin->prefix_length; + } + + if (prefixlen != 0) + { + pref_length = prefixlen; + } + /* Delete FIB entry */ fib_prefix_t pfx = { .fp_proto = FIB_PROTOCOL_IP6, - .fp_len = 128, + .fp_len = pref_length, .fp_addr = { .ip6 = *localsid_addr, } }; - fib_table_entry_delete (fib_table_find (FIB_PROTOCOL_IP6, - fib_table), - &pfx, FIB_SOURCE_SR); + fib_table_entry_delete (fib_table_find + (FIB_PROTOCOL_IP6, fib_table), &pfx, + FIB_SOURCE_SR); /* In case it is a Xconnect iface remove the (OIF, NHOP) adj */ if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX6 @@ -104,10 +118,6 @@ sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, if (ls->behavior >= SR_BEHAVIOR_LAST) { - sr_localsid_fn_registration_t *plugin = 0; - plugin = pool_elt_at_index (sm->plugin_functions, - ls->behavior - SR_BEHAVIOR_LAST); - /* Callback plugin removal function */ rv = plugin->removal (ls); } @@ -125,15 +135,28 @@ sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, if (is_del) return -2; + if (behavior >= SR_BEHAVIOR_LAST) + { + sr_localsid_fn_registration_t *plugin = 0; + plugin = + pool_elt_at_index (sm->plugin_functions, behavior - SR_BEHAVIOR_LAST); + pref_length = plugin->prefix_length; + } + /* Check whether there exists a FIB entry with such address */ fib_prefix_t pfx = { .fp_proto = FIB_PROTOCOL_IP6, - .fp_len = 128, + .fp_len = pref_length, }; pfx.fp_addr.as_u64[0] = localsid_addr->as_u64[0]; pfx.fp_addr.as_u64[1] = localsid_addr->as_u64[1]; + if (prefixlen != 0) + { + pfx.fp_len = prefixlen; + } + /* Lookup the FIB index associated to the table id provided */ u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, fib_table); if (fib_index == ~0) @@ -153,6 +176,7 @@ sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, ls->behavior = behavior; ls->nh_adj = (u32) ~ 0; ls->fib_table = fib_table; + ls->localsid_len = pfx.fp_len; switch (behavior) { case SR_BEHAVIOR_END: @@ -267,6 +291,7 @@ sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input, vnet_main_t *vnm = vnet_get_main (); ip6_sr_main_t *sm = &sr_main; u32 sw_if_index = (u32) ~ 0, vlan_index = (u32) ~ 0, fib_index = 0; + u16 prefix_len = 0; int is_del = 0; int end_psp = 0; ip6_address_t resulting_address; @@ -289,6 +314,10 @@ sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input, &resulting_address)) address_set = 1; else if (!address_set + && unformat (input, "prefix %U/%d", unformat_ip6_address, + &resulting_address, &prefix_len)) + address_set = 1; + else if (!address_set && unformat (input, "addr %U", unformat_ip6_address, &resulting_address)) address_set = 1; @@ -325,12 +354,12 @@ sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input, sr_localsid_fn_registration_t **plugin_it = 0; /* Create a vector out of the plugin pool as recommended */ - /* *INDENT-OFF* */ - pool_foreach (plugin, sm->plugin_functions, - { - vec_add1 (vec_plugins, plugin); - }); - /* *INDENT-ON* */ + /* *INDENT-OFF* */ + pool_foreach (plugin, sm->plugin_functions, + { + vec_add1 (vec_plugins, plugin); + }); + /* *INDENT-ON* */ vec_foreach (plugin_it, vec_plugins) { @@ -373,9 +402,10 @@ sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input, return clib_error_return (0, "Error: SRv6 PSP only compatible with End and End.X"); - rv = sr_cli_localsid (is_del, &resulting_address, end_psp, behavior, - sw_if_index, vlan_index, fib_index, &next_hop, - ls_plugin_mem); + rv = + sr_cli_localsid (is_del, &resulting_address, prefix_len, end_psp, + behavior, sw_if_index, vlan_index, fib_index, &next_hop, + ls_plugin_mem); switch (rv) { @@ -1533,7 +1563,8 @@ const static char *const *const sr_loc_d_nodes[DPO_PROTO_NUM] = { int sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name, u8 * keyword_str, u8 * def_str, - u8 * params_str, dpo_type_t * dpo, + u8 * params_str, u8 prefix_length, + dpo_type_t * dpo, format_function_t * ls_format, unformat_function_t * ls_unformat, sr_plugin_callback_t * creation_fn, @@ -1562,6 +1593,7 @@ sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name, plugin->sr_localsid_function_number = (plugin - sm->plugin_functions); plugin->sr_localsid_function_number += SR_BEHAVIOR_LAST; + plugin->prefix_length = prefix_length; plugin->ls_format = ls_format; plugin->ls_unformat = ls_unformat; plugin->creation = creation_fn; |
