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selftests: add a test case for rp_filter

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Add a test case to simulate the loopback packet case fixed
in the previous patch.

This test gets passed after the fix:

IPv4 rp_filter tests
    TEST: rp_filter passes local packets                                [ OK ]
    TEST: rp_filter passes loopback packets                             [ OK ]

Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cong Wang 2019-07-17 14:41:59 -07:00 committed by David S. Miller
parent 66f8209547
commit adb701d6cf
1 changed files with 34 additions and 1 deletions
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35
tools/testing/selftests/net/fib_tests.sh
View File

@ -9,12 +9,13 @@ ret=0
ksft_skip=4
# all tests in this script. Can be overridden with -t option
TESTS="unregister down carrier nexthop ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric ipv6_route_metrics ipv4_route_metrics ipv4_route_v6_gw"
TESTS="unregister down carrier nexthop ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric ipv6_route_metrics ipv4_route_metrics ipv4_route_v6_gw rp_filter"
VERBOSE=0
PAUSE_ON_FAIL=no
PAUSE=no
IP="ip -netns ns1"
NS_EXEC="ip netns exec ns1"
log_test()
{
@ -433,6 +434,37 @@ fib_carrier_test()
fib_carrier_unicast_test
}
fib_rp_filter_test()
{
echo
echo "IPv4 rp_filter tests"
setup
set -e
$IP link set dev lo address 52:54:00:6a:c7:5e
$IP link set dummy0 address 52:54:00:6a:c7:5e
$IP link add dummy1 type dummy
$IP link set dummy1 address 52:54:00:6a:c7:5e
$IP link set dev dummy1 up
$NS_EXEC sysctl -qw net.ipv4.conf.all.rp_filter=1
$NS_EXEC sysctl -qw net.ipv4.conf.all.accept_local=1
$NS_EXEC sysctl -qw net.ipv4.conf.all.route_localnet=1
$NS_EXEC tc qd add dev dummy1 parent root handle 1: fq_codel
$NS_EXEC tc filter add dev dummy1 parent 1: protocol arp basic action mirred egress redirect dev lo
$NS_EXEC tc filter add dev dummy1 parent 1: protocol ip basic action mirred egress redirect dev lo
set +e
run_cmd "ip netns exec ns1 ping -I dummy1 -w1 -c1 198.51.100.1"
log_test $? 0 "rp_filter passes local packets"
run_cmd "ip netns exec ns1 ping -I dummy1 -w1 -c1 127.0.0.1"
log_test $? 0 "rp_filter passes loopback packets"
cleanup
}
################################################################################
# Tests on nexthop spec
@ -1557,6 +1589,7 @@ do
fib_unreg_test|unregister) fib_unreg_test;;
fib_down_test|down) fib_down_test;;
fib_carrier_test|carrier) fib_carrier_test;;
fib_rp_filter_test|rp_filter) fib_rp_filter_test;;
fib_nexthop_test|nexthop) fib_nexthop_test;;
ipv6_route_test|ipv6_rt) ipv6_route_test;;
ipv4_route_test|ipv4_rt) ipv4_route_test;;