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blackhole_dev: add a selftest

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Since this is not really a device with all capabilities, this test
ensures that it has *enough* to make it through the data path
without causing unwanted side-effects (read crash!).

Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mahesh Bandewar
2019-07-01 14:39:01 -07:00
committed by David S. Miller
parent 8d7017fd62
commit 509e56b37c
6 changed files with 123 additions and 1 deletions
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2
tools/testing/selftests/net/Makefile
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@@ -5,7 +5,7 @@ CFLAGS = -Wall -Wl,--no-as-needed -O2 -g
CFLAGS += -I../../../../usr/include/
TEST_PROGS := run_netsocktests run_afpackettests test_bpf.sh netdevice.sh \
rtnetlink.sh xfrm_policy.sh
rtnetlink.sh xfrm_policy.sh test_blackhole_dev.sh
TEST_PROGS += fib_tests.sh fib-onlink-tests.sh pmtu.sh udpgso.sh ip_defrag.sh
TEST_PROGS += udpgso_bench.sh fib_rule_tests.sh msg_zerocopy.sh psock_snd.sh
TEST_PROGS += udpgro_bench.sh udpgro.sh test_vxlan_under_vrf.sh reuseport_addr_any.sh

1
tools/testing/selftests/net/config
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@@ -27,3 +27,4 @@ CONFIG_NFT_CHAIN_NAT_IPV6=m
CONFIG_NFT_CHAIN_NAT_IPV4=m
CONFIG_NET_SCH_FQ=m
CONFIG_NET_SCH_ETF=m
CONFIG_TEST_BLACKHOLE_DEV=m

11
tools/testing/selftests/net/test_blackhole_dev.sh Executable file
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@@ -0,0 +1,11 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# Runs blackhole-dev test using blackhole-dev kernel module
if /sbin/modprobe -q test_blackhole_dev ; then
/sbin/modprobe -q -r test_blackhole_dev;
echo "test_blackhole_dev: ok";
else
echo "test_blackhole_dev: [FAIL]";
exit 1;
fi