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passt/test/pasta/ndp
David Gibson 9a0e544f05 test: Improve test for NDP assigned prefix
In the NDP tests we search explicitly for a guest address with prefix
length 64.  AFAICT this is an attempt to specifically find the SLAAC
assigned address, rather than something assigned by other means.  We can do
that more explicitly by checking for .protocol == "kernel_ra". however.

The SLAAC prefixes we assigned *will* always be 64-bit, that's hard-coded
into our NDP implementation.  RFC4862 doesn't really allow anything else
since the interface identifiers for an Ethernet-like link are 64-bits.

Let's actually verify that, rather than just assuming it, by extracting the
prefix length assigned in the guest and checking it as well.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2024-11-07 12:47:37 +01:00

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# SPDX-License-Identifier: GPL-2.0-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/pasta/ndp - Check DHCP and DHCPv6 functionality in pasta mode
#
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
nstools ip jq sipcalc grep cut
htools ip jq sipcalc grep cut
test Interface name
nsout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
check [ -n "__IFNAME__" ]
ns ip link set dev __IFNAME__ up
# Wait for DAD to complete
ns while ip -j -6 addr show tentative | jq -e '.[].addr_info'; do sleep 0.1; done
test SLAAC: prefix
nsout ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .protocol == "kernel_ra") | .local + "/" + (.prefixlen | tostring)] | .[0]'
nsout PREFIX6 sipcalc __ADDR6__ | grep prefix | cut -d' ' -f4
hout HOST_ADDR6 ip -j -6 addr show|jq -rM ['.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .deprecated != true).local] | .[0]'
hout HOST_PREFIX6 sipcalc __HOST_ADDR6__/64 | grep prefix | cut -d' ' -f4
check [ "__PREFIX6__" = "__HOST_PREFIX6__" ]
test SLAAC: route
nsout 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] | .[0]'
check [ __GW6__ = __HOST_GW6__ ]