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selftests: fib_tests: add fib6 from ra to static test

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The new test checks that a route that has been promoted from RA-learned
to static does not switch back when a new RA message arrives. In
addition, it checks that the route is owned by RA again when the static
address is removed.

Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Link: https://patch.msgid.link/20251115095939.6967-2-fmancera@suse.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Fernando Fernandez Mancera
2025-11-15 10:59:39 +01:00
committed by Jakub Kicinski
parent f72514b3c5
commit d7dbda8789
1 changed files with 65 additions and 1 deletions
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66
tools/testing/selftests/net/fib_tests.sh
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@@ -11,7 +11,8 @@ TESTS="unregister down carrier nexthop suppress ipv6_notify ipv4_notify \
ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric ipv6_route_metrics \
ipv4_route_metrics ipv4_route_v6_gw rp_filter ipv4_del_addr \
ipv6_del_addr ipv4_mangle ipv6_mangle ipv4_bcast_neigh fib6_gc_test \
ipv4_mpath_list ipv6_mpath_list ipv4_mpath_balance ipv6_mpath_balance"
ipv4_mpath_list ipv6_mpath_list ipv4_mpath_balance ipv6_mpath_balance \
fib6_ra_to_static"
VERBOSE=0
PAUSE_ON_FAIL=no
@@ -1476,6 +1477,68 @@ ipv6_route_metrics_test()
route_cleanup
}
fib6_ra_to_static()
{
setup
echo
echo "Fib6 route promotion from RA-learned to static test"
set -e
# ra6 is required for the test. (ipv6toolkit)
if [ ! -x "$(command -v ra6)" ]; then
echo "SKIP: ra6 not found."
set +e
cleanup &> /dev/null
return
fi
# Create a pair of veth devices to send a RA message from one
# device to another.
$IP link add veth1 type veth peer name veth2
$IP link set dev veth1 up
$IP link set dev veth2 up
$IP -6 address add 2001:10::1/64 dev veth1 nodad
$IP -6 address add 2001:10::2/64 dev veth2 nodad
# Make veth1 ready to receive RA messages.
$NS_EXEC sysctl -wq net.ipv6.conf.veth1.accept_ra=2
# Send a RA message with a prefix from veth2.
$NS_EXEC ra6 -i veth2 -d 2001:10::1 -P 2001:12::/64\#LA\#120\#60
# Wait for the RA message.
sleep 1
# systemd may mess up the test. Make sure that
# systemd-networkd.service and systemd-networkd.socket are stopped.
check_rt_num_clean 2 $($IP -6 route list|grep expires|wc -l) || return
# Configure static address on the same prefix
$IP -6 address add 2001:12::dead/64 dev veth1 nodad
# On-link route won't expire anymore, default route still owned by RA
check_rt_num 1 $($IP -6 route list |grep expires|wc -l)
# Send a second RA message with a prefix from veth2.
$NS_EXEC ra6 -i veth2 -d 2001:10::1 -P 2001:12::/64\#LA\#120\#60
sleep 1
# Expire is not back, on-link route is still static
check_rt_num 1 $($IP -6 route list |grep expires|wc -l)
$IP -6 address del 2001:12::dead/64 dev veth1 nodad
# Expire is back, on-link route is now owned by RA again
check_rt_num 2 $($IP -6 route list |grep expires|wc -l)
log_test $ret 0 "ipv6 promote RA route to static"
set +e
cleanup &> /dev/null
}
# add route for a prefix, flushing any existing routes first
# expected to be the first step of a test
add_route()
@@ -2798,6 +2861,7 @@ do
ipv6_mpath_list) ipv6_mpath_list_test;;
ipv4_mpath_balance) ipv4_mpath_balance_test;;
ipv6_mpath_balance) ipv6_mpath_balance_test;;
fib6_ra_to_static) fib6_ra_to_static;;
help) echo "Test names: $TESTS"; exit 0;;
esac