diff options
Diffstat (limited to 'doc')
| -rwxr-xr-x | doc/demo.sh | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/doc/demo.sh b/doc/demo.sh new file mode 100755 index 0000000..3d20491 --- /dev/null +++ b/doc/demo.sh @@ -0,0 +1,69 @@ +#!/bin/sh -e +# +# SPDX-License-Identifier: AGPL-3.0-or-later +# +# PASST - Plug A Simple Socket Transport +# +# demo.sh - Set up namespaces, addresses and routes to show PASST functionality +# +# Copyright (c) 2020-2021 Red Hat GmbH +# Author: Stefano Brivio <sbrivio@redhat.com> + +get_token() { + IFS=' ' + __next=0 + for __token in ${@}; do + [ ${__next} -eq 2 ] && echo "${__token}" && return + [ "${__token}" = "${1}" ] && __next=$((__next + 1)) + done + unset IFS +} + +ipv6_dev() { get_token "dev" $(ip -o -6 ro show default); } +ipv6_devaddr() { get_token "inet6" $(ip -o -6 ad sh dev "${1}" scope global); } +ipv6_ll_addr() { get_token "inet6" $(ip -o -6 ad sh dev "${1}" scope link); } +ipv6_mask() { echo ${1#*/}; } +ipv6_mangle() { + IFS=':' + __c=0 + for __16b in ${1%%/*}; do + if [ ${__c} -lt 7 ]; then + printf "${__16b}:" + else + printf "abcd\n" && break + fi + __c=$((__c + 1)) + done + unset IFS +} + +ndp_setup() { + sysctl -w net.ipv6.conf.all.proxy_ndp=1 + ip -6 neigh add proxy "${1}" dev "$(ipv6_dev)" +} + +ip netns del passt 2>/dev/null || : +ip link del veth_passt 2>/dev/null || : +ip netns add passt +ip link add veth_passt up netns passt type veth peer name veth_passt +ip link set dev veth_passt up + +ip -n passt addr add 192.0.2.2/24 dev veth_passt +ip addr add 192.0.2.1/24 dev veth_passt +ip -n passt route add default via 192.0.2.1 + +ipv6_addr="$(ipv6_devaddr "$(ipv6_dev)")" +ipv6_passt="$(ipv6_mangle "${ipv6_addr}")" +ndp_setup "${ipv6_passt}" +ip -n passt addr add "${ipv6_passt}/$(ipv6_mask "${ipv6_addr}")" dev veth_passt +ip addr add "${ipv6_addr}" dev veth_passt +passt_ll="$(ipv6_ll_addr "veth_passt")" +main_ll="$(get_token "link/ether" $(ip -o li sh veth_passt))" +ip -n passt neigh add "${passt_ll%%/*}" dev veth_passt lladdr "${main_ll}" +ip -n passt route add default via "${passt_ll%%/*}" dev veth_passt + +ethtool -K veth_passt tx off +ip netns exec passt ethtool -K veth_passt tx off +ulimit -n 300000 + +ip netns exec passt ./passt |