passt/test/icmp/passt_in_ns

# SPDX-License-Identifier: AGPL-3.0-or-later
#
# PASST - Plug A Simple Socket Transport
#  for qemu/UNIX domain socket mode
#
# PASTA - Pack A Subtle Tap Abstraction
#  for network namespace/tap device mode
#
# test/icmp/passt_in_ns - Check ICMP/ICMPv6 functionality for passt in ns
#
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
#
# These tests can work reliably only within an isolated namespace: the host
# might have a net.ipv4.ping_group_range sysctl value not allowing pasta's gid
# to create "ping" sockets. Inside the namespace, there's a single group, which
# is allowed by default to create them.

onlyfor	passt_in_ns
nstools	ip jq sleep
gtools	ping ip jq

test	ICMP echo: guest to ns
nsout	IFNAME_NS ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
ns	ip addr add 192.0.2.1/32 dev __IFNAME_NS__
guest	ping -c1 -w1 192.0.2.1
ns	ip addr del 192.0.2.1/32 dev __IFNAME_NS__

test	ICMPv6 echo: guest to ns
ns	ip addr add 2001:db8::1 dev __IFNAME_NS__ && sleep 2 # DAD
gout	IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
guest	ping -c1 -w1 2001:db8::1
ns	ip addr del 2001:db8::1 dev __IFNAME_NS__