Commit edaa117e authored by Petr Machata's avatar Petr Machata Committed by David S. Miller

selftests: forwarding: vxlan_bridge_1d: Add flood test

Test that when sending traffic to an unlearned MAC address, the traffic
is flooded to both remote VXLAN endpoints.
Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5852fd07
...@@ -66,6 +66,7 @@ export VXPORT ...@@ -66,6 +66,7 @@ export VXPORT
: ${ALL_TESTS:=" : ${ALL_TESTS:="
ping_ipv4 ping_ipv4
test_flood
"} "}
NUM_NETIFS=6 NUM_NETIFS=6
...@@ -289,6 +290,110 @@ ping_ipv4() ...@@ -289,6 +290,110 @@ ping_ipv4()
ping_test $h1 192.0.2.4 ": local->remote 2" ping_test $h1 192.0.2.4 ": local->remote 2"
} }
maybe_in_ns()
{
echo ${1:+in_ns} $1
}
__flood_counter_add_del()
{
local add_del=$1; shift
local dev=$1; shift
local ns=$1; shift
# Putting the ICMP capture both to HW and to SW will end up
# double-counting the packets that are trapped to slow path, such as for
# the unicast test. Adding either skip_hw or skip_sw fixes this problem,
# but with skip_hw, the flooded packets are not counted at all, because
# those are dropped due to MAC address mismatch; and skip_sw is a no-go
# for veth-based topologies.
#
# So try to install with skip_sw and fall back to skip_sw if that fails.
$(maybe_in_ns $ns) __icmp_capture_add_del \
$add_del 100 "" $dev skip_sw 2>/dev/null || \
$(maybe_in_ns $ns) __icmp_capture_add_del \
$add_del 100 "" $dev skip_hw
}
flood_counter_install()
{
__flood_counter_add_del add "$@"
}
flood_counter_uninstall()
{
__flood_counter_add_del del "$@"
}
flood_fetch_stat()
{
local dev=$1; shift
local ns=$1; shift
$(maybe_in_ns $ns) tc_rule_stats_get $dev 100 ingress
}
flood_fetch_stats()
{
local counters=("${@}")
local counter
for counter in "${counters[@]}"; do
flood_fetch_stat $counter
done
}
vxlan_flood_test()
{
local mac=$1; shift
local dst=$1; shift
local -a expects=("${@}")
local -a counters=($h2 "vx2 ns1" "vx2 ns2")
local counter
local key
for counter in "${counters[@]}"; do
flood_counter_install $counter
done
local -a t0s=($(flood_fetch_stats "${counters[@]}"))
$MZ $h1 -c 10 -d 100msec -p 64 -b $mac -B $dst -t icmp -q
sleep 1
local -a t1s=($(flood_fetch_stats "${counters[@]}"))
for key in ${!t0s[@]}; do
local delta=$((t1s[$key] - t0s[$key]))
local expect=${expects[$key]}
((expect == delta))
check_err $? "${counters[$key]}: Expected to capture $expect packets, got $delta."
done
for counter in "${counters[@]}"; do
flood_counter_uninstall $counter
done
}
__test_flood()
{
local mac=$1; shift
local dst=$1; shift
local what=$1; shift
RET=0
vxlan_flood_test $mac $dst 10 10 10
log_test "VXLAN: $what"
}
test_flood()
{
__test_flood de:ad:be:ef:13:37 192.0.2.100 "flood"
}
test_all() test_all()
{ {
echo "Running tests with UDP port $VXPORT" echo "Running tests with UDP port $VXPORT"
......
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