selftests: forwarding: Introduce basic tc chains tests

Tests chains matching and goto chain action.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/net/forwarding/tc_chains.sh b/tools/testing/selftests/net/forwarding/tc_chains.sh
new file mode 100755 (executable)
index 0000000..94c114a
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/tc_chains.sh
@@ -0,0 +1,122 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+NUM_NETIFS=2
+source lib.sh
+source tc_common.sh
+
+tcflags="skip_hw"
+
+h1_create()
+{
+       simple_if_init $h1 192.0.2.1/24
+}
+
+h1_destroy()
+{
+       simple_if_fini $h1 192.0.2.1/24
+}
+
+h2_create()
+{
+       simple_if_init $h2 192.0.2.2/24
+       tc qdisc add dev $h2 clsact
+}
+
+h2_destroy()
+{
+       tc qdisc del dev $h2 clsact
+       simple_if_fini $h2 192.0.2.2/24
+}
+
+unreachable_chain_test()
+{
+       RET=0
+
+       tc filter add dev $h2 ingress chain 1 protocol ip pref 1 handle 1101 \
+               flower $tcflags dst_mac $h2mac 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" 1101 1
+       check_fail $? "matched on filter in unreachable chain"
+
+       tc filter del dev $h2 ingress chain 1 protocol ip pref 1 handle 1101 \
+               flower
+
+       log_test "unreachable chain ($tcflags)"
+}
+
+gact_goto_chain_test()
+{
+       RET=0
+
+       tc filter add dev $h2 ingress chain 1 protocol ip pref 1 handle 1101 \
+               flower $tcflags dst_mac $h2mac action drop
+       tc filter add dev $h2 ingress protocol ip pref 2 handle 102 flower \
+               $tcflags dst_mac $h2mac action drop
+       tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \
+               $tcflags dst_mac $h2mac action goto chain 1
+
+       $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" 102 1
+       check_fail $? "Matched on a wrong filter"
+
+       tc_check_packets "dev $h2 ingress" 101 1
+       check_err $? "Did not match on correct filter with goto chain action"
+
+       tc_check_packets "dev $h2 ingress" 1101 1
+       check_err $? "Did not match on correct filter in chain 1"
+
+       tc filter del dev $h2 ingress protocol ip pref 1 handle 101 flower
+       tc filter del dev $h2 ingress protocol ip pref 2 handle 102 flower
+       tc filter del dev $h2 ingress chain 1 protocol ip pref 1 handle 1101 \
+               flower
+
+       log_test "gact goto chain ($tcflags)"
+}
+
+setup_prepare()
+{
+       h1=${NETIFS[p1]}
+       h2=${NETIFS[p2]}
+       h1mac=$(mac_get $h1)
+       h2mac=$(mac_get $h2)
+
+       vrf_prepare
+
+       h1_create
+       h2_create
+}
+
+cleanup()
+{
+       pre_cleanup
+
+       h2_destroy
+       h1_destroy
+
+       vrf_cleanup
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+
+unreachable_chain_test
+gact_goto_chain_test
+
+tc_offload_check
+if [[ $? -ne 0 ]]; then
+       log_info "Could not test offloaded functionality"
+else
+       tcflags="skip_sw"
+       unreachable_chain_test
+       gact_goto_chain_test
+fi
+
+exit $EXIT_STATUS