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selftests: mlxsw: Add Bloom delta test

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The eRP table is active when there is more than a single rule
pattern. It may be that the patterns are close enough and use delta
mechanism. Bloom filter index computation is based on the values of
{rule & mask, mask ID, region ID} where the rule delta bits must be
cleared.

Add a test that exercises Bloom filter with delta mechanism.
Configure rules within delta range and pass a packet which is
supposed to hit the correct rule.

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 08:49:37 +00:00 committed by David S. Miller
parent 5118ca4edf
commit 5d06a76d9e
1 changed files with 36 additions and 1 deletions
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37
tools/testing/selftests/drivers/net/mlxsw/spectrum-2/tc_flower.sh
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@ -9,7 +9,7 @@ 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 \
bloom_simple_test bloom_complex_test"
bloom_simple_test bloom_complex_test bloom_delta_test"
NUM_NETIFS=2
source $lib_dir/tc_common.sh
source $lib_dir/lib.sh
@ -542,6 +542,41 @@ bloom_complex_test()
log_test "bloom complex test ($tcflags)"
}
bloom_delta_test()
{
# When multiple masks are used, the eRP table is activated. When
# masks are close enough (delta) the masks reside on the same
# eRP table. This test verifies that the eRP table is correctly
# allocated and used in delta condition and that Bloom filter is
# still functional with delta.
RET=0
tc filter add dev $h2 ingress protocol ip pref 3 handle 103 flower \
$tcflags dst_ip 192.1.0.0/16 action drop
$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.1.2.1 -B 192.1.2.2 \
-t ip -q
tc_check_packets "dev $h2 ingress" 103 1
check_err $? "Single filter - did not match"
tc filter add dev $h2 ingress protocol ip pref 2 handle 102 flower \
$tcflags dst_ip 192.2.1.0/24 action drop
$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac -A 192.2.1.1 -B 192.2.1.2 \
-t ip -q
tc_check_packets "dev $h2 ingress" 102 1
check_err $? "Delta filters - did not match second filter"
tc filter del dev $h2 ingress protocol ip pref 3 handle 103 flower
tc filter del dev $h2 ingress protocol ip pref 2 handle 102 flower
log_test "bloom delta test ($tcflags)"
}
setup_prepare()
{
h1=${NETIFS[p1]}