06abfcf6d9
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>
70 lines
3.4 KiB
Text
70 lines
3.4 KiB
Text
# SPDX-License-Identifier: AGPL-3.0-or-later
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#
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# PASST - Plug A Simple Socket Transport
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# for qemu/UNIX domain socket mode
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#
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# PASTA - Pack A Subtle Tap Abstraction
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# for network namespace/tap device mode
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#
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# test/dhcp/passt - Check DHCP and DHCPv6 functionality in passt mode
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#
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# Copyright (c) 2021 Red Hat GmbH
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# Author: Stefano Brivio <sbrivio@redhat.com>
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gtools ip jq dhclient sed tr
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htools ip jq sed tr head
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test Interface name
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gout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
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hout HOST_IFNAME ip -j -4 route show|jq -rM '[.[] | select(.dst == "default").dev] | .[0]'
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hout HOST_IFNAME6 ip -j -6 route show|jq -rM '[.[] | select(.dst == "default").dev] | .[0]'
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check [ -n "__IFNAME__" ]
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test DHCP: address
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guest /sbin/dhclient -4 __IFNAME__
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gout ADDR ip -j -4 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[0].local'
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hout HOST_ADDR ip -j -4 addr show|jq -rM '.[] | select(.ifname == "__HOST_IFNAME__").addr_info[0].local'
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check [ "__ADDR__" = "__HOST_ADDR__" ]
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test DHCP: route
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gout GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
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hout HOST_GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
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check [ "__GW__" = "__HOST_GW__" ]
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test DHCP: MTU
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gout MTU ip -j link show | jq -rM '.[] | select(.ifname == "__IFNAME__").mtu'
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check [ __MTU__ = 65520 ]
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test DHCP: DNS
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gout DNS sed -n 's/^nameserver \([0-9]*\.\)\(.*\)/\1\2/p' /etc/resolv.conf | tr '\n' ',' | sed 's/,$//;s/$/\n/'
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hout HOST_DNS sed -n 's/^nameserver \([0-9]*\.\)\(.*\)/\1\2/p' /etc/resolv.conf | head -n3 | tr '\n' ',' | sed 's/,$//;s/$/\n/'
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check [ "__DNS__" = "__HOST_DNS__" ] || [ "__DNS__" = "__HOST_GW__" -a "__HOST_DNS__" = "127.0.0.1" ]
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# FQDNs should be terminated by dots, but the guest DHCP client might omit them:
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# strip them first
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test DHCP: search list
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gout SEARCH sed 's/\. / /g' /etc/resolv.conf | sed 's/\.$//g' | sed -n 's/^search \(.*\)/\1/p' | tr ' \n' ',' | sed 's/,$//;s/$/\n/'
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hout HOST_SEARCH sed 's/\. / /g' /etc/resolv.conf | sed 's/\.$//g' | sed -n 's/^search \(.*\)/\1/p' | tr ' \n' ',' | sed 's/,$//;s/$/\n/'
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check [ "__SEARCH__" = "__HOST_SEARCH__" ]
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test DHCPv6: address
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guest /sbin/dhclient -6 __IFNAME__
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gout ADDR6 ip -j -6 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.prefixlen == 128).local'
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hout HOST_ADDR6 ip -j -6 addr show|jq -rM '.[] | select(.ifname == "__HOST_IFNAME6__").addr_info[] | select(.scope == "global").local'
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check [ "__ADDR6__" = "__HOST_ADDR6__" ]
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test DHCPv6: route
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gout GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
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hout HOST_GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
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check [ "__GW6__" = "__HOST_GW6__" ]
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# Strip interface specifier: interface names might differ between host and guest
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test DHCPv6: DNS
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gout DNS6 sed -n 's/^nameserver \([^:]*:\)\([^%]*\).*/\1\2/p' /etc/resolv.conf | tr '\n' ',' | sed 's/,$//;s/$/\n/'
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hout HOST_DNS6 sed -n 's/^nameserver \([^:]*:\)\([^%]*\).*/\1\2/p' /etc/resolv.conf | tr '\n' ',' | sed 's/,$//;s/$/\n/'
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check [ "__DNS6__" = "__HOST_DNS6__" ] || [ "__DNS6__" = "__HOST_GW6__" -a "__HOST_DNS6__" = "::1" ]
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test DHCPv6: search list
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gout SEARCH6 sed 's/\. / /g' /etc/resolv.conf | sed 's/\.$//g' | sed -n 's/^search \(.*\)/\1/p' | tr ' \n' ',' | sed 's/,$//;s/$/\n/'
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hout HOST_SEARCH6 sed 's/\. / /g' /etc/resolv.conf | sed 's/\.$//g' | sed -n 's/^search \(.*\)/\1/p' | tr ' \n' ',' | sed 's/,$//;s/$/\n/'
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check [ "__SEARCH6__" = "__HOST_SEARCH6__" ]
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