vinbero

README

Vinbero

Vinbero is a very fast high-performance SRv6 implementation Vibero is about 3-5 Mpps in single flow, which is 2-3 times better performance than linux!

The goal of this project is to implement the basic functions of SRv6 so that users can enjoy network programming:) For example, L2,L3VPN, ServiceChain, Mobile Uplane(in UPF)...etc,

This implementation is also very powerful because it is written in XDP. It does not require any special equipment like P4. All you need is the latest linux kernel to run it. It is also a very small implementation compared to VPP. It's easy to understand and easy to add functionality.It is also possible to incorporate these:)(e.g. CNI, NOS...etc)

Please raise issue with use case description if you want to any SRv6 functions not implemented yet or let's make a contribution!

Required package

• linux: 5.8<=x
  • It means that the version you are testing is 5.8 or higher. Actually, if BTF supports it, I think there is no problem.
• golang: 1.3<=x
• clang: 9<=x

Setup

ulimit -l unlimited

# if "ulimit -l unlimited" is not working when plz check
echo "DefaultLimitMEMLOCK=infinity">>/etc/systemd/system.conf
echo "DefaultLimitMEMLOCK=infinity">>/etc/systemd/user.conf

remove offload

for i in rx tx tso ufo gso gro lro tx nocache copy sg txvlan rxvlan; do
       /sbin/ethtool -K eth1 $i off 2>&1 > /dev/null;
done

use irqaffinity. this mellanox nic case.

git clone https://github.com/Mellanox/mlnx-tools.git
cd mlnx-tools/
./set_irq_affinity.sh ens4f0np0

Build

cd include
wget https://raw.githubusercontent.com/cloudflare/xdpcap/master/hook.h
cd ..
make

ConfigExample

This is an example of performing the End operation.

internal:
  devices:
    - eth1
    - eth2
settings:
  functions:
    - action: SEG6_LOCAL_ACTION_END
      triggerAddr: fc00:2::1/128
      actionSrcAddr: fc00:1::1
      flaver: NONE
    - action: SEG6_LOCAL_ACTION_END
      triggerAddr: fc00:2::2/128
      actionSrcAddr: fc00:1::1
      flaver: NONE

In the transit case, actionSrcAddr works as a so-called bsid.

See this for details: vinbero.yml.sample

Run

./bin/vinbero

List of SRv6 functions of interest and status (a.k.a. Road Map)

Reference list

• draft-filsfils-spring-srv6-network-programming
• draft-ietf-dmm-srv6-mobile-uplane
• draft-murakami-dmm-user-plane-message-encoding

Transit behaviors

Function	schedule	description
T	n/a	Transit behavior
T.Insert	future
T.Insert.Red
T.Encaps	Done
T.Encaps.Red
T.Encaps.L2	future
T.Encaps.L2.Red

Functions associated with a SID

Function	schedule	description
End	Done
End.X	Fed, 2020
End.T
End.DX2 (V)
End.DT2 (U/M)
End.DX6	Done
End.DX4	Done
End.DT6
End.DT4
End.DT46
End.B6.Insert
End.B6.Insert.Red
End.B6.Encaps
End.B6.Encaps.Red
End.BM
End.S
Args.Mob.Session	Done	Consider with End.MAP, End.DT and End.DX
End.MAP
End.M.GTP6.D	Mar, 2021	GTP-U/IPv6 => SRv6, For implementation purposes, it is treated as transit
End.M.GTP6.D.Di	Mar, 2021	GTP-U/IPv6 => SRv6, For implementation purposes, it is treated as transit
End.M.GTP6.E	Mar, 2021	SRv6 => GTP-U/IPv6
End.M.GTP4.E	partial Done, Mar, 2021	SRv6 => GTP-U/IPv4 gtpv1ext hdr is not supported.
H.M.GTP4.D	partial Done, Mar, 2021	GTP-U/IPv4 => SRv6, Currently, gtpv1ext hdr is not supported.
End.Limit		Rate Limiting function

Non functional design items

Item name	schedule
BSID friendly table structure	future

Flavours

Function	schedule	description
PSP	future	Penultimate Segment Pop
USP		Ultimate Segment Pop
USD		Ultimate Segment Decapsulation

Respectful implementation

I'm using these as a reference. thanks:)

• p4srv6
• linux/samples/bpf
• VPP/srv6_mobile_plugin_doc

Trivia

The Vinbero is an Esperanto word meaning grape A meshed node running SRv6 looks like a grape when viewed from above:)