selftests: netdevsim: Add test for nexthop offload API
Test various aspects of the nexthop offload API on top of the netdevsim implementation. Both good and bad flows are tested. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Ido Schimmel
Jakub Kicinski
parent
66e58bf070
commit
21584e6a92
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# This test is for checking the nexthop offload API. It makes use of netdevsim
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# which registers a listener to the nexthop notification chain.
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lib_dir=$(dirname $0)/../../../net/forwarding
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ALL_TESTS="
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nexthop_single_add_test
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nexthop_single_add_err_test
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nexthop_group_add_test
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nexthop_group_add_err_test
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nexthop_group_replace_test
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nexthop_group_replace_err_test
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nexthop_single_replace_test
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nexthop_single_replace_err_test
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nexthop_single_in_group_replace_test
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nexthop_single_in_group_replace_err_test
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nexthop_single_in_group_delete_test
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nexthop_single_in_group_delete_err_test
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nexthop_replay_test
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nexthop_replay_err_test
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"
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NETDEVSIM_PATH=/sys/bus/netdevsim/
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DEV_ADDR=1337
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DEV=netdevsim${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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source $lib_dir/devlink_lib.sh
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nexthop_check()
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{
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local nharg="$1"; shift
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local expected="$1"; shift
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out=$($IP nexthop show ${nharg} | sed -e 's/ *$//')
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if [[ "$out" != "$expected" ]]; then
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return 1
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fi
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return 0
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}
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nexthop_resource_check()
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{
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local expected_occ=$1; shift
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occ=$($DEVLINK -jp resource show $DEVLINK_DEV \
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| jq '.[][][] | select(.name=="nexthops") | .["occ"]')
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if [ $expected_occ -ne $occ ]; then
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return 1
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fi
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return 0
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}
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nexthop_resource_set()
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{
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local size=$1; shift
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$DEVLINK resource set $DEVLINK_DEV path nexthops size $size
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$DEVLINK dev reload $DEVLINK_DEV
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}
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nexthop_single_add_test()
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{
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RET=0
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
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check_err $? "Unexpected nexthop entry"
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nexthop_resource_check 1
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check_err $? "Wrong nexthop occupancy"
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$IP nexthop del id 1
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nexthop_resource_check 0
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check_err $? "Wrong nexthop occupancy after delete"
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log_test "Single nexthop add and delete"
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}
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nexthop_single_add_err_test()
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{
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RET=0
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nexthop_resource_set 1
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1 &> /dev/null
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check_fail $? "Nexthop addition succeeded when should fail"
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nexthop_resource_check 1
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check_err $? "Wrong nexthop occupancy"
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log_test "Single nexthop add failure"
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$IP nexthop flush &> /dev/null
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nexthop_resource_set 9999
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}
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nexthop_group_add_test()
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{
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RET=0
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1
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$IP nexthop add id 10 group 1/2
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nexthop_check "id 10" "id 10 group 1/2 trap"
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check_err $? "Unexpected nexthop group entry"
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nexthop_resource_check 4
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check_err $? "Wrong nexthop occupancy"
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$IP nexthop del id 10
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nexthop_resource_check 2
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check_err $? "Wrong nexthop occupancy after delete"
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$IP nexthop add id 10 group 1,20/2,39
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nexthop_check "id 10" "id 10 group 1,20/2,39 trap"
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check_err $? "Unexpected weighted nexthop group entry"
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nexthop_resource_check 61
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check_err $? "Wrong weighted nexthop occupancy"
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$IP nexthop del id 10
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nexthop_resource_check 2
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check_err $? "Wrong nexthop occupancy after delete"
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log_test "Nexthop group add and delete"
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$IP nexthop flush &> /dev/null
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}
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nexthop_group_add_err_test()
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{
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RET=0
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nexthop_resource_set 2
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1
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$IP nexthop add id 10 group 1/2 &> /dev/null
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check_fail $? "Nexthop group addition succeeded when should fail"
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nexthop_resource_check 2
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check_err $? "Wrong nexthop occupancy"
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log_test "Nexthop group add failure"
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$IP nexthop flush &> /dev/null
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nexthop_resource_set 9999
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}
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nexthop_group_replace_test()
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{
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RET=0
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1
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$IP nexthop add id 3 via 192.0.2.4 dev dummy1
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$IP nexthop add id 10 group 1/2
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$IP nexthop replace id 10 group 1/2/3
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nexthop_check "id 10" "id 10 group 1/2/3 trap"
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check_err $? "Unexpected nexthop group entry"
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nexthop_resource_check 6
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check_err $? "Wrong nexthop occupancy"
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log_test "Nexthop group replace"
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$IP nexthop flush &> /dev/null
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}
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nexthop_group_replace_err_test()
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{
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RET=0
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nexthop_resource_set 5
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1
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$IP nexthop add id 3 via 192.0.2.4 dev dummy1
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$IP nexthop add id 10 group 1/2
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$IP nexthop replace id 10 group 1/2/3 &> /dev/null
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check_fail $? "Nexthop group replacement succeeded when should fail"
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nexthop_check "id 10" "id 10 group 1/2 trap"
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check_err $? "Unexpected nexthop group entry after failure"
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nexthop_resource_check 5
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check_err $? "Wrong nexthop occupancy after failure"
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log_test "Nexthop group replace failure"
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$IP nexthop flush &> /dev/null
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nexthop_resource_set 9999
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}
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nexthop_single_replace_test()
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{
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RET=0
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop replace id 1 via 192.0.2.3 dev dummy1
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nexthop_check "id 1" "id 1 via 192.0.2.3 dev dummy1 scope link trap"
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check_err $? "Unexpected nexthop entry"
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nexthop_resource_check 1
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check_err $? "Wrong nexthop occupancy"
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log_test "Single nexthop replace"
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$IP nexthop flush &> /dev/null
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}
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nexthop_single_replace_err_test()
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{
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RET=0
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# This is supposed to cause the replace to fail because the new nexthop
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# is programmed before deleting the replaced one.
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nexthop_resource_set 1
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop replace id 1 via 192.0.2.3 dev dummy1 &> /dev/null
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check_fail $? "Nexthop replace succeeded when should fail"
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nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
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check_err $? "Unexpected nexthop entry after failure"
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nexthop_resource_check 1
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check_err $? "Wrong nexthop occupancy after failure"
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log_test "Single nexthop replace failure"
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$IP nexthop flush &> /dev/null
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nexthop_resource_set 9999
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}
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nexthop_single_in_group_replace_test()
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{
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RET=0
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1
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$IP nexthop add id 10 group 1/2
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$IP nexthop replace id 1 via 192.0.2.4 dev dummy1
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check_err $? "Failed to replace nexthop when should not"
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nexthop_check "id 10" "id 10 group 1/2 trap"
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check_err $? "Unexpected nexthop group entry"
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nexthop_resource_check 4
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check_err $? "Wrong nexthop occupancy"
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log_test "Single nexthop replace while in group"
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$IP nexthop flush &> /dev/null
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}
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nexthop_single_in_group_replace_err_test()
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{
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RET=0
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nexthop_resource_set 5
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1
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$IP nexthop add id 10 group 1/2
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$IP nexthop replace id 1 via 192.0.2.4 dev dummy1 &> /dev/null
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check_fail $? "Nexthop replacement succeeded when should fail"
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nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
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check_err $? "Unexpected nexthop entry after failure"
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nexthop_check "id 10" "id 10 group 1/2 trap"
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check_err $? "Unexpected nexthop group entry after failure"
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nexthop_resource_check 4
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check_err $? "Wrong nexthop occupancy"
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log_test "Single nexthop replace while in group failure"
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$IP nexthop flush &> /dev/null
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nexthop_resource_set 9999
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}
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nexthop_single_in_group_delete_test()
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{
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RET=0
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1
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$IP nexthop add id 10 group 1/2
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$IP nexthop del id 1
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nexthop_check "id 10" "id 10 group 2 trap"
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check_err $? "Unexpected nexthop group entry"
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nexthop_resource_check 2
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check_err $? "Wrong nexthop occupancy"
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log_test "Single nexthop delete while in group"
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$IP nexthop flush &> /dev/null
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}
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nexthop_single_in_group_delete_err_test()
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{
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RET=0
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# First, nexthop 1 will be deleted, which will reduce the occupancy to
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# 5. Afterwards, a replace notification will be sent for nexthop group
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# 10 with only two nexthops. Since the new group is allocated before
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# the old is deleted, the replacement will fail as it will result in an
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# occupancy of 7.
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nexthop_resource_set 6
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1
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$IP nexthop add id 3 via 192.0.2.4 dev dummy1
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$IP nexthop add id 10 group 1/2/3
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$IP nexthop del id 1
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nexthop_resource_check 5
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check_err $? "Wrong nexthop occupancy"
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log_test "Single nexthop delete while in group failure"
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$IP nexthop flush &> /dev/null
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nexthop_resource_set 9999
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}
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nexthop_replay_test()
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{
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RET=0
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1
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$IP nexthop add id 10 group 1/2
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$DEVLINK dev reload $DEVLINK_DEV
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check_err $? "Failed to reload when should not"
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nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
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check_err $? "Unexpected nexthop entry after reload"
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nexthop_check "id 2" "id 2 via 192.0.2.3 dev dummy1 scope link trap"
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check_err $? "Unexpected nexthop entry after reload"
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nexthop_check "id 10" "id 10 group 1/2 trap"
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check_err $? "Unexpected nexthop group entry after reload"
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nexthop_resource_check 4
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check_err $? "Wrong nexthop occupancy"
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log_test "Nexthop replay"
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$IP nexthop flush &> /dev/null
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}
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nexthop_replay_err_test()
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{
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RET=0
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$IP nexthop add id 1 via 192.0.2.2 dev dummy1
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$IP nexthop add id 2 via 192.0.2.3 dev dummy1
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$IP nexthop add id 10 group 1/2
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# Reduce size of nexthop resource so that reload will fail.
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$DEVLINK resource set $DEVLINK_DEV path nexthops size 3
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$DEVLINK dev reload $DEVLINK_DEV &> /dev/null
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check_fail $? "Reload succeeded when should fail"
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$DEVLINK resource set $DEVLINK_DEV path nexthops size 9999
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$DEVLINK dev reload $DEVLINK_DEV
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check_err $? "Failed to reload when should not"
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log_test "Nexthop replay failure"
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$IP nexthop flush &> /dev/null
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}
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setup_prepare()
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{
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local netdev
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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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set -e
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ip netns add testns1
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devlink dev reload $DEVLINK_DEV netns testns1
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IP="ip -netns testns1"
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DEVLINK="devlink -N testns1"
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$IP link add name dummy1 up type dummy
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$IP address add 192.0.2.1/24 dev dummy1
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set +e
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}
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cleanup()
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{
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pre_cleanup
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ip netns del testns1
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echo "$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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