350 lines
9.9 KiB
Bash
Executable File
350 lines
9.9 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# Test unicast FIB offload indication.
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lib_dir=$(dirname $0)/../../../net/forwarding
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ALL_TESTS="
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ipv6_route_add
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ipv6_route_replace
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ipv6_route_nexthop_group_share
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ipv6_route_rate
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"
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NUM_NETIFS=4
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source $lib_dir/lib.sh
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source $lib_dir/devlink_lib.sh
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tor1_create()
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{
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simple_if_init $tor1_p1 2001:db8:1::2/128 2001:db8:1::3/128
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}
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tor1_destroy()
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{
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simple_if_fini $tor1_p1 2001:db8:1::2/128 2001:db8:1::3/128
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}
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tor2_create()
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{
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simple_if_init $tor2_p1 2001:db8:2::2/128 2001:db8:2::3/128
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}
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tor2_destroy()
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{
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simple_if_fini $tor2_p1 2001:db8:2::2/128 2001:db8:2::3/128
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}
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spine_create()
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{
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ip link set dev $spine_p1 up
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ip link set dev $spine_p2 up
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__addr_add_del $spine_p1 add 2001:db8:1::1/64
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__addr_add_del $spine_p2 add 2001:db8:2::1/64
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}
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spine_destroy()
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{
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__addr_add_del $spine_p2 del 2001:db8:2::1/64
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__addr_add_del $spine_p1 del 2001:db8:1::1/64
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ip link set dev $spine_p2 down
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ip link set dev $spine_p1 down
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}
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ipv6_offload_check()
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{
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local pfx="$1"; shift
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local expected_num=$1; shift
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local num
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# Try to avoid races with route offload
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sleep .1
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num=$(ip -6 route show match ${pfx} | grep "offload" | wc -l)
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if [ $num -eq $expected_num ]; then
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return 0
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fi
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return 1
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}
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ipv6_route_add_prefix()
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{
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RET=0
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# Add a prefix route and check that it is offloaded.
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ip -6 route add 2001:db8:3::/64 dev $spine_p1 metric 100
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ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 100" 1
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check_err $? "prefix route not offloaded"
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# Append an identical prefix route with an higher metric and check that
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# offload indication did not change.
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ip -6 route append 2001:db8:3::/64 dev $spine_p1 metric 200
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ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 100" 1
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check_err $? "lowest metric not offloaded after append"
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ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 200" 0
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check_err $? "highest metric offloaded when should not"
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# Prepend an identical prefix route with lower metric and check that
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# it is offloaded and the others are not.
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ip -6 route append 2001:db8:3::/64 dev $spine_p1 metric 10
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ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 10" 1
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check_err $? "lowest metric not offloaded after prepend"
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ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 100" 0
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check_err $? "mid metric offloaded when should not"
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ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 200" 0
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check_err $? "highest metric offloaded when should not"
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# Delete the routes and add the same route with a different nexthop
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# device. Check that it is offloaded.
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ip -6 route flush 2001:db8:3::/64 dev $spine_p1
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ip -6 route add 2001:db8:3::/64 dev $spine_p2
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ipv6_offload_check "2001:db8:3::/64 dev $spine_p2" 1
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log_test "IPv6 prefix route add"
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ip -6 route flush 2001:db8:3::/64
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}
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ipv6_route_add_mpath()
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{
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RET=0
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# Add a multipath route and check that it is offloaded.
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ip -6 route add 2001:db8:3::/64 metric 100 \
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nexthop via 2001:db8:1::2 dev $spine_p1 \
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nexthop via 2001:db8:2::2 dev $spine_p2
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ipv6_offload_check "2001:db8:3::/64 metric 100" 2
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check_err $? "multipath route not offloaded when should"
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# Append another nexthop and check that it is offloaded as well.
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ip -6 route append 2001:db8:3::/64 metric 100 \
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nexthop via 2001:db8:1::3 dev $spine_p1
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ipv6_offload_check "2001:db8:3::/64 metric 100" 3
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check_err $? "appended nexthop not offloaded when should"
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# Mimic route replace by removing the route and adding it back with
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# only two nexthops.
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ip -6 route del 2001:db8:3::/64
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ip -6 route add 2001:db8:3::/64 metric 100 \
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nexthop via 2001:db8:1::2 dev $spine_p1 \
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nexthop via 2001:db8:2::2 dev $spine_p2
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ipv6_offload_check "2001:db8:3::/64 metric 100" 2
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check_err $? "multipath route not offloaded after delete & add"
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# Append a nexthop with an higher metric and check that the offload
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# indication did not change.
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ip -6 route append 2001:db8:3::/64 metric 200 \
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nexthop via 2001:db8:1::3 dev $spine_p1
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ipv6_offload_check "2001:db8:3::/64 metric 100" 2
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check_err $? "lowest metric not offloaded after append"
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ipv6_offload_check "2001:db8:3::/64 metric 200" 0
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check_err $? "highest metric offloaded when should not"
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# Prepend a nexthop with a lower metric and check that it is offloaded
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# and the others are not.
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ip -6 route append 2001:db8:3::/64 metric 10 \
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nexthop via 2001:db8:1::3 dev $spine_p1
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ipv6_offload_check "2001:db8:3::/64 metric 10" 1
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check_err $? "lowest metric not offloaded after prepend"
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ipv6_offload_check "2001:db8:3::/64 metric 100" 0
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check_err $? "mid metric offloaded when should not"
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ipv6_offload_check "2001:db8:3::/64 metric 200" 0
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check_err $? "highest metric offloaded when should not"
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log_test "IPv6 multipath route add"
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ip -6 route flush 2001:db8:3::/64
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}
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ipv6_route_add()
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{
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ipv6_route_add_prefix
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ipv6_route_add_mpath
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}
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ipv6_route_replace()
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{
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RET=0
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# Replace prefix route with prefix route.
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ip -6 route add 2001:db8:3::/64 metric 100 dev $spine_p1
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ipv6_offload_check "2001:db8:3::/64 metric 100" 1
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check_err $? "prefix route not offloaded when should"
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ip -6 route replace 2001:db8:3::/64 metric 100 dev $spine_p2
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ipv6_offload_check "2001:db8:3::/64 metric 100" 1
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check_err $? "prefix route not offloaded after replace"
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# Replace prefix route with multipath route.
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ip -6 route replace 2001:db8:3::/64 metric 100 \
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nexthop via 2001:db8:1::2 dev $spine_p1 \
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nexthop via 2001:db8:2::2 dev $spine_p2
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ipv6_offload_check "2001:db8:3::/64 metric 100" 2
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check_err $? "multipath route not offloaded after replace"
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# Replace multipath route with prefix route. A prefix route cannot
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# replace a multipath route, so it is appended.
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ip -6 route replace 2001:db8:3::/64 metric 100 dev $spine_p1
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ipv6_offload_check "2001:db8:3::/64 metric 100 dev $spine_p1" 0
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check_err $? "prefix route offloaded after 'replacing' multipath route"
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ipv6_offload_check "2001:db8:3::/64 metric 100" 2
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check_err $? "multipath route not offloaded after being 'replaced' by prefix route"
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# Replace multipath route with multipath route.
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ip -6 route replace 2001:db8:3::/64 metric 100 \
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nexthop via 2001:db8:1::3 dev $spine_p1 \
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nexthop via 2001:db8:2::3 dev $spine_p2
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ipv6_offload_check "2001:db8:3::/64 metric 100" 2
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check_err $? "multipath route not offloaded after replacing multipath route"
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# Replace a non-existing multipath route with a multipath route and
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# check that it is appended and not offloaded.
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ip -6 route replace 2001:db8:3::/64 metric 200 \
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nexthop via 2001:db8:1::3 dev $spine_p1 \
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nexthop via 2001:db8:2::3 dev $spine_p2
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ipv6_offload_check "2001:db8:3::/64 metric 100" 2
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check_err $? "multipath route not offloaded after non-existing route was 'replaced'"
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ipv6_offload_check "2001:db8:3::/64 metric 200" 0
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check_err $? "multipath route offloaded after 'replacing' non-existing route"
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log_test "IPv6 route replace"
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ip -6 route flush 2001:db8:3::/64
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}
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ipv6_route_nexthop_group_share()
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{
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RET=0
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# The driver consolidates identical nexthop groups in order to reduce
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# the resource usage in its adjacency table. Check that the deletion
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# of one multipath route using the group does not affect the other.
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ip -6 route add 2001:db8:3::/64 \
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nexthop via 2001:db8:1::2 dev $spine_p1 \
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nexthop via 2001:db8:2::2 dev $spine_p2
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ip -6 route add 2001:db8:4::/64 \
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nexthop via 2001:db8:1::2 dev $spine_p1 \
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nexthop via 2001:db8:2::2 dev $spine_p2
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ipv6_offload_check "2001:db8:3::/64" 2
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check_err $? "multipath route not offloaded when should"
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ipv6_offload_check "2001:db8:4::/64" 2
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check_err $? "multipath route not offloaded when should"
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ip -6 route del 2001:db8:3::/64
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ipv6_offload_check "2001:db8:4::/64" 2
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check_err $? "multipath route not offloaded after deletion of route sharing the nexthop group"
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# Check that after unsharing a nexthop group the routes are still
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# marked as offloaded.
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ip -6 route add 2001:db8:3::/64 \
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nexthop via 2001:db8:1::2 dev $spine_p1 \
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nexthop via 2001:db8:2::2 dev $spine_p2
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ip -6 route del 2001:db8:4::/64 \
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nexthop via 2001:db8:1::2 dev $spine_p1
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ipv6_offload_check "2001:db8:4::/64" 1
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check_err $? "singlepath route not offloaded after unsharing the nexthop group"
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ipv6_offload_check "2001:db8:3::/64" 2
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check_err $? "multipath route not offloaded after unsharing the nexthop group"
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log_test "IPv6 nexthop group sharing"
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ip -6 route flush 2001:db8:3::/64
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ip -6 route flush 2001:db8:4::/64
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}
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ipv6_route_rate()
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{
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local batch_dir=$(mktemp -d)
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local num_rts=$((40 * 1024))
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local num_nhs=16
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local total
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local start
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local diff
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local end
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local nhs
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local i
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RET=0
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# Prepare 40K /64 multipath routes with 16 nexthops each and check how
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# long it takes to add them. A limit of 60 seconds is set. It is much
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# higher than insertion should take and meant to flag a serious
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# regression.
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total=$((nums_nhs * num_rts))
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for i in $(seq 1 $num_nhs); do
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ip -6 address add 2001:db8:1::10:$i/128 dev $tor1_p1
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nexthops+=" nexthop via 2001:db8:1::10:$i dev $spine_p1"
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done
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for i in $(seq 1 $num_rts); do
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echo "route add 2001:db8:8:$(printf "%x" $i)::/64$nexthops" \
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>> $batch_dir/add.batch
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echo "route del 2001:db8:8:$(printf "%x" $i)::/64$nexthops" \
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>> $batch_dir/del.batch
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done
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start=$(date +%s.%N)
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ip -batch $batch_dir/add.batch
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count=$(ip -6 route show | grep offload | wc -l)
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while [ $count -lt $total ]; do
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sleep .01
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count=$(ip -6 route show | grep offload | wc -l)
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done
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end=$(date +%s.%N)
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diff=$(echo "$end - $start" | bc -l)
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test "$(echo "$diff > 60" | bc -l)" -eq 0
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check_err $? "route insertion took too long"
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log_info "inserted $num_rts routes in $diff seconds"
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log_test "IPv6 routes insertion rate"
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ip -batch $batch_dir/del.batch
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for i in $(seq 1 $num_nhs); do
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ip -6 address del 2001:db8:1::10:$i/128 dev $tor1_p1
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done
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rm -rf $batch_dir
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}
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setup_prepare()
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{
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spine_p1=${NETIFS[p1]}
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tor1_p1=${NETIFS[p2]}
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spine_p2=${NETIFS[p3]}
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tor2_p1=${NETIFS[p4]}
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vrf_prepare
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forwarding_enable
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tor1_create
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tor2_create
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spine_create
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}
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cleanup()
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{
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pre_cleanup
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spine_destroy
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tor2_destroy
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tor1_destroy
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forwarding_restore
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vrf_cleanup
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}
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trap cleanup EXIT
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setup_prepare
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setup_wait
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tests_run
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exit $EXIT_STATUS
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