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selftests: mlxsw: Add Bloom filter simple test

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Add a test that exercises Bloom filter code.
Activate eRP table in the region by adding multiple rule patterns which
with very high probability use different entries in the Bloom filter.
Then send packets in order to check lookup hits on all relevant rules.

Signed-off-by: Nir Dotan <nird@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nir Dotan 2018-12-16 08:49:35 +00:00 committed by David S. Miller
parent 03ce5bd187
commit 095c720807
1 changed files with 56 additions and 1 deletions
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57
tools/testing/selftests/drivers/net/mlxsw/spectrum-2/tc_flower.sh
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@ -8,7 +8,8 @@
lib_dir=$(dirname $0)/../../../../net/forwarding
ALL_TESTS="single_mask_test identical_filters_test two_masks_test \
multiple_masks_test ctcam_edge_cases_test delta_simple_test"
multiple_masks_test ctcam_edge_cases_test delta_simple_test \
bloom_simple_test"
NUM_NETIFS=2
source $lib_dir/tc_common.sh
source $lib_dir/lib.sh
@ -404,6 +405,60 @@ delta_simple_test()
log_test "delta simple test ($tcflags)"
}
bloom_simple_test()
{
# Bloom filter requires that the eRP table is used. This test
# verifies that Bloom filter is not harming correctness of ACLs.
# First, make sure that eRP table is used and then set rule patterns
# which are distant enough and will result skipping a lookup after
# consulting the Bloom filter. Although some eRP lookups are skipped,
# the correct filter should be hit.
RET=0
tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \
$tcflags dst_ip 192.0.2.2 action drop
tc filter add dev $h2 ingress protocol ip pref 5 handle 104 flower \
$tcflags dst_ip 198.51.100.2 action drop
tc filter add dev $h2 ingress protocol ip pref 3 handle 103 flower \
$tcflags dst_ip 192.0.0.0/8 action drop
$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \
-t ip -q
tc_check_packets "dev $h2 ingress" 101 1
check_err $? "Two filters - did not match highest priority"
$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 198.51.100.1 -B 198.51.100.2 \
-t ip -q
tc_check_packets "dev $h2 ingress" 104 1
check_err $? "Single filter - did not match"
tc filter del dev $h2 ingress protocol ip pref 1 handle 101 flower
$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.0.2.1 -B 192.0.2.2 \
-t ip -q
tc_check_packets "dev $h2 ingress" 103 1
check_err $? "Low prio filter - did not match"
tc filter add dev $h2 ingress protocol ip pref 2 handle 102 flower \
$tcflags dst_ip 198.0.0.0/8 action drop
$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 198.51.100.1 -B 198.51.100.2 \
-t ip -q
tc_check_packets "dev $h2 ingress" 102 1
check_err $? "Two filters - did not match highest priority after add"
tc filter del dev $h2 ingress protocol ip pref 3 handle 103 flower
tc filter del dev $h2 ingress protocol ip pref 2 handle 102 flower
tc filter del dev $h2 ingress protocol ip pref 5 handle 104 flower
log_test "bloom simple test ($tcflags)"
}
setup_prepare()
{
h1=${NETIFS[p1]}