selftests: netdevsim: Add fib_notifications test
Add test to check fib notifications behavior. The test checks route addition, route deletion and route replacement for both IPv4 and IPv6. When fib_notify_on_flag_change=0, expect single notification for route addition/deletion/replacement. When fib_notify_on_flag_change=1, expect: - two notification for route addition/replacement, first without RTM_F_TRAP and second with RTM_F_TRAP. - single notification for route deletion. $ ./fib_notifications.sh TEST: IPv4 route addition [ OK ] TEST: IPv4 route deletion [ OK ] TEST: IPv4 route replacement [ OK ] TEST: IPv6 route addition [ OK ] TEST: IPv6 route deletion [ OK ] TEST: IPv6 route replacement [ OK ] Signed-off-by: Amit Cohen <amcohen@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Amit Cohen
Jakub Kicinski
parent
d1a7a48928
commit
19d36d2971
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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lib_dir=$(dirname $0)/../../../net/forwarding
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ALL_TESTS="
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ipv4_route_addition_test
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ipv4_route_deletion_test
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ipv4_route_replacement_test
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ipv6_route_addition_test
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ipv6_route_deletion_test
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ipv6_route_replacement_test
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"
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NETDEVSIM_PATH=/sys/bus/netdevsim/
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DEV_ADDR=1337
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DEV=netdevsim${DEV_ADDR}
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DEVLINK_DEV=netdevsim/${DEV}
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SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV/net/
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NUM_NETIFS=0
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source $lib_dir/lib.sh
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check_rt_trap()
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{
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local outfile=$1; shift
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local line
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# Make sure that the first notification was emitted without RTM_F_TRAP
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# flag and the second with RTM_F_TRAP flag
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head -n 1 $outfile | grep -q "rt_trap"
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if [[ $? -eq 0 ]]; then
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return 1
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fi
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head -n 2 $outfile | tail -n 1 | grep -q "rt_trap"
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}
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route_notify_check()
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{
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local outfile=$1; shift
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local expected_num_lines=$1; shift
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# check the monitor results
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lines=`wc -l $outfile | cut "-d " -f1`
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test $lines -eq $expected_num_lines
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check_err $? "$expected_num_lines notifications were expected but $lines were received"
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if [[ $expected_num_lines -eq 2 ]]; then
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check_rt_trap $outfile
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check_err $? "Wrong RTM_F_TRAP flags in notifications"
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fi
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}
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route_addition_check()
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{
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local ip=$1; shift
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local notify=$1; shift
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local route=$1; shift
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local expected_num_notifications=$1; shift
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ip netns exec testns1 sysctl -qw net.$ip.fib_notify_on_flag_change=$notify
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local outfile=$(mktemp)
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$IP monitor route &> $outfile &
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sleep 1
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$IP route add $route dev dummy1
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sleep 1
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kill %% && wait %% &> /dev/null
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route_notify_check $outfile $expected_num_notifications
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rm -f $outfile
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$IP route del $route dev dummy1
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}
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ipv4_route_addition_test()
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{
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RET=0
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local ip="ipv4"
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local route=192.0.2.0/24
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# Make sure a single notification will be emitted for the programmed
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# route.
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local notify=0
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local expected_num_notifications=1
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# route_addition_check will assign value to RET.
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route_addition_check $ip $notify $route $expected_num_notifications
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# Make sure two notifications will be emitted for the programmed route.
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notify=1
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expected_num_notifications=2
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route_addition_check $ip $notify $route $expected_num_notifications
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log_test "IPv4 route addition"
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}
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route_deletion_check()
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{
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local ip=$1; shift
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local notify=$1; shift
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local route=$1; shift
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local expected_num_notifications=$1; shift
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ip netns exec testns1 sysctl -qw net.$ip.fib_notify_on_flag_change=$notify
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$IP route add $route dev dummy1
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sleep 1
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local outfile=$(mktemp)
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$IP monitor route &> $outfile &
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sleep 1
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$IP route del $route dev dummy1
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sleep 1
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kill %% && wait %% &> /dev/null
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route_notify_check $outfile $expected_num_notifications
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rm -f $outfile
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}
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ipv4_route_deletion_test()
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{
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RET=0
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local ip="ipv4"
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local route=192.0.2.0/24
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local expected_num_notifications=1
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# Make sure a single notification will be emitted for the deleted route,
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# regardless of fib_notify_on_flag_change value.
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local notify=0
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# route_deletion_check will assign value to RET.
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route_deletion_check $ip $notify $route $expected_num_notifications
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notify=1
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route_deletion_check $ip $notify $route $expected_num_notifications
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log_test "IPv4 route deletion"
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}
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route_replacement_check()
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{
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local ip=$1; shift
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local notify=$1; shift
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local route=$1; shift
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local expected_num_notifications=$1; shift
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ip netns exec testns1 sysctl -qw net.$ip.fib_notify_on_flag_change=$notify
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$IP route add $route dev dummy1
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sleep 1
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local outfile=$(mktemp)
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$IP monitor route &> $outfile &
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sleep 1
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$IP route replace $route dev dummy2
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sleep 1
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kill %% && wait %% &> /dev/null
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route_notify_check $outfile $expected_num_notifications
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rm -f $outfile
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$IP route del $route dev dummy2
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}
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ipv4_route_replacement_test()
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{
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RET=0
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local ip="ipv4"
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local route=192.0.2.0/24
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$IP link add name dummy2 type dummy
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$IP link set dev dummy2 up
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# Make sure a single notification will be emitted for the new route.
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local notify=0
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local expected_num_notifications=1
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# route_replacement_check will assign value to RET.
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route_replacement_check $ip $notify $route $expected_num_notifications
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# Make sure two notifications will be emitted for the new route.
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notify=1
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expected_num_notifications=2
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route_replacement_check $ip $notify $route $expected_num_notifications
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$IP link del name dummy2
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log_test "IPv4 route replacement"
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}
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ipv6_route_addition_test()
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{
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RET=0
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local ip="ipv6"
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local route=2001:db8:1::/64
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# Make sure a single notification will be emitted for the programmed
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# route.
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local notify=0
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local expected_num_notifications=1
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route_addition_check $ip $notify $route $expected_num_notifications
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# Make sure two notifications will be emitted for the programmed route.
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notify=1
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expected_num_notifications=2
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route_addition_check $ip $notify $route $expected_num_notifications
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log_test "IPv6 route addition"
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}
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ipv6_route_deletion_test()
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{
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RET=0
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local ip="ipv6"
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local route=2001:db8:1::/64
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local expected_num_notifications=1
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# Make sure a single notification will be emitted for the deleted route,
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# regardless of fib_notify_on_flag_change value.
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local notify=0
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route_deletion_check $ip $notify $route $expected_num_notifications
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notify=1
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route_deletion_check $ip $notify $route $expected_num_notifications
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log_test "IPv6 route deletion"
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}
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ipv6_route_replacement_test()
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{
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RET=0
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local ip="ipv6"
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local route=2001:db8:1::/64
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$IP link add name dummy2 type dummy
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$IP link set dev dummy2 up
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# Make sure a single notification will be emitted for the new route.
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local notify=0
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local expected_num_notifications=1
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route_replacement_check $ip $notify $route $expected_num_notifications
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# Make sure two notifications will be emitted for the new route.
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notify=1
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expected_num_notifications=2
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route_replacement_check $ip $notify $route $expected_num_notifications
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$IP link del name dummy2
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log_test "IPv6 route replacement"
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}
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setup_prepare()
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{
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modprobe netdevsim &> /dev/null
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echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device
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while [ ! -d $SYSFS_NET_DIR ] ; do :; done
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ip netns add testns1
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if [ $? -ne 0 ]; then
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echo "Failed to add netns \"testns1\""
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exit 1
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fi
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devlink dev reload $DEVLINK_DEV netns testns1
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if [ $? -ne 0 ]; then
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echo "Failed to reload into netns \"testns1\""
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exit 1
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fi
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IP="ip -n testns1"
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$IP link add name dummy1 type dummy
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$IP link set dev dummy1 up
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}
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cleanup()
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{
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pre_cleanup
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$IP link del name dummy1
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ip netns del testns1
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echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device
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modprobe -r netdevsim &> /dev/null
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}
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trap cleanup EXIT
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setup_prepare
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tests_run
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exit $EXIT_STATUS
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