passt/test/ndp/passt
David Gibson 06abfcf6d9 Separately locate external interfaces for IPv4 and IPv6
Now that the back end allows passt/pasta to use different external
interfaces for IPv4 and IPv6, use that to do the right thing in the case
that the host has IPv4 and IPv6 connectivity via different interfaces.
If the user hasn't explicitly chosen an interface, separately search for
a suitable external interface for each protocol.

As a bonus, this substantially simplifies the external interface probe.  It
also eliminates a subtle confusing case where in some circumstances we
would pick the first interface in interface index order, and sometimes in
order of routes returned from netlink.  On some network configurations that
could cause tests to fail, because the logic in the tests was subtly
different (it always used route order).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2022-07-30 21:57:50 +02:00

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# 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/ndp/passt - Check NDP functionality in passt mode
#
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
gtools ip jq sipcalc grep
htools ip jq sipcalc grep cut
test Interface name
gout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
guest ip link set dev __IFNAME__ up && sleep 2
hout HOST_IFNAME6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").dev'
check [ -n "__IFNAME__" ]
test SLAAC: prefix
gout ADDR6 ip -j -6 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .prefixlen == 64).local'
gout PREFIX6 sipcalc __ADDR6__/64 | grep prefix | cut -d' ' -f4
hout HOST_ADDR6 ip -j -6 addr show|jq -rM '.[] | select(.ifname == "__HOST_IFNAME6__").addr_info[] | select(.scope == "global").local'
hout HOST_PREFIX6 sipcalc __HOST_ADDR6__/64 | grep prefix | cut -d' ' -f4
check [ "__PREFIX6__" = "__HOST_PREFIX6__" ]
test SLAAC: route
gout GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
hout HOST_GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
check [ __GW6__ = __HOST_GW6__ ]