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test: Improve test for NDP assigned prefix

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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>
This commit is contained in:
David Gibson 2024-11-06 12:44:15 +11:00 committed by Stefano Brivio
parent 910f4f9103
commit 9a0e544f05
2 changed files with 4 additions and 4 deletions
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4
test/passt/ndp
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@ -23,8 +23,8 @@ hout HOST_IFNAME6 ip -j -6 route show|jq -rM '[.[] | select(.dst == "default").d
check [ -n "__IFNAME__" ] check [ -n "__IFNAME__" ]
test SLAAC: prefix test SLAAC: prefix
gout ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .prefixlen == 64).local] | .[0]' gout ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .protocol == "kernel_ra") | .local + "/" + (.prefixlen | tostring)] | .[0]'
gout PREFIX6 sipcalc __ADDR6__/64 | grep prefix | cut -d' ' -f4 gout PREFIX6 sipcalc __ADDR6__ | grep prefix | cut -d' ' -f4
hout HOST_ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__HOST_IFNAME6__").addr_info[] | select(.scope == "global" and .deprecated != true).local] | .[0]' hout HOST_ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__HOST_IFNAME6__").addr_info[] | select(.scope == "global" and .deprecated != true).local] | .[0]'
hout HOST_PREFIX6 sipcalc __HOST_ADDR6__/64 | grep prefix | cut -d' ' -f4 hout HOST_PREFIX6 sipcalc __HOST_ADDR6__/64 | grep prefix | cut -d' ' -f4
check [ "__PREFIX6__" = "__HOST_PREFIX6__" ] check [ "__PREFIX6__" = "__HOST_PREFIX6__" ]

4
test/pasta/ndp
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@ -22,8 +22,8 @@ ns ip link set dev __IFNAME__ up
ns while ip -j -6 addr show tentative | jq -e '.[].addr_info'; do sleep 0.1; done ns while ip -j -6 addr show tentative | jq -e '.[].addr_info'; do sleep 0.1; done
test SLAAC: prefix test SLAAC: prefix
nsout ADDR6 ip -j -6 addr show|jq -rM '[.[] | select(.ifname == "__IFNAME__").addr_info[] | select(.scope == "global" and .prefixlen == 64).local] | .[0]' 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__/64 | grep prefix | cut -d' ' -f4 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_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 hout HOST_PREFIX6 sipcalc __HOST_ADDR6__/64 | grep prefix | cut -d' ' -f4
check [ "__PREFIX6__" = "__HOST_PREFIX6__" ] check [ "__PREFIX6__" = "__HOST_PREFIX6__" ]