OSCL-LXR linux-6.0.1/​tools/​testing/​selftests/​drivers/​net/​netdevsim/​nexthop.sh	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
 # This test is for checking the nexthop offload API. It makes use of netdevsim
 # which registers a listener to the nexthop notification chain.
 
 lib_dir=$(dirname $0)/../../../net/forwarding
 
 ALL_TESTS="
         nexthop_single_add_test
         nexthop_single_add_err_test
         nexthop_group_add_test
         nexthop_group_add_err_test
         nexthop_res_group_add_test
         nexthop_res_group_add_err_test
         nexthop_group_replace_test
         nexthop_group_replace_err_test
         nexthop_res_group_replace_test
         nexthop_res_group_replace_err_test
         nexthop_res_group_idle_timer_test
         nexthop_res_group_idle_timer_del_test
         nexthop_res_group_increase_idle_timer_test
         nexthop_res_group_decrease_idle_timer_test
         nexthop_res_group_unbalanced_timer_test
         nexthop_res_group_unbalanced_timer_del_test
         nexthop_res_group_no_unbalanced_timer_test
         nexthop_res_group_short_unbalanced_timer_test
         nexthop_res_group_increase_unbalanced_timer_test
         nexthop_res_group_decrease_unbalanced_timer_test
         nexthop_res_group_force_migrate_busy_test
         nexthop_single_replace_test
         nexthop_single_replace_err_test
         nexthop_single_in_group_replace_test
         nexthop_single_in_group_replace_err_test
         nexthop_single_in_res_group_replace_test
         nexthop_single_in_res_group_replace_err_test
         nexthop_single_in_group_delete_test
         nexthop_single_in_group_delete_err_test
         nexthop_single_in_res_group_delete_test
         nexthop_single_in_res_group_delete_err_test
         nexthop_replay_test
         nexthop_replay_err_test
 "
 NETDEVSIM_PATH=/sys/bus/netdevsim/
 DEV_ADDR=1337
 DEV=netdevsim${DEV_ADDR}
 SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV/net/
 DEBUGFS_NET_DIR=/sys/kernel/debug/netdevsim/$DEV/
 NUM_NETIFS=0
 source $lib_dir/lib.sh
 
 DEVLINK_DEV=
 source $lib_dir/devlink_lib.sh
 DEVLINK_DEV=netdevsim/${DEV}
 
 nexthop_check()
 {
         local nharg="$1"; shift
         local expected="$1"; shift
 
         out=$($IP nexthop show ${nharg} | sed -e 's/ *$//')
         if [[ "$out" != "$expected" ]]; then
                 return 1
         fi
 
         return 0
 }
 
 nexthop_bucket_nhid_count_check()
 {
         local group_id=$1; shift
         local expected
         local count
         local nhid
         local ret
 
         while (($# > 0)); do
                 nhid=$1; shift
                 expected=$1; shift
 
                 count=$($IP nexthop bucket show id $group_id nhid $nhid |
                         grep "trap" | wc -l)
                 if ((expected != count)); then
                         return 1
                 fi
         done
 
         return 0
 }
 
 nexthop_resource_check()
 {
         local expected_occ=$1; shift
 
         occ=$($DEVLINK -jp resource show $DEVLINK_DEV \
                 | jq '.[][][] | select(.name=="nexthops") | .["occ"]')
 
         if [ $expected_occ -ne $occ ]; then
                 return 1
         fi
 
         return 0
 }
 
 nexthop_resource_set()
 {
         local size=$1; shift
 
         $DEVLINK resource set $DEVLINK_DEV path nexthops size $size
         $DEVLINK dev reload $DEVLINK_DEV
 }
 
 nexthop_single_add_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
         check_err $? "Unexpected nexthop entry"
 
         nexthop_resource_check 1
         check_err $? "Wrong nexthop occupancy"
 
         $IP nexthop del id 1
         nexthop_resource_check 0
         check_err $? "Wrong nexthop occupancy after delete"
 
         log_test "Single nexthop add and delete"
 }
 
 nexthop_single_add_err_test()
 {
         RET=0
 
         nexthop_resource_set 1
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1 &> /dev/null
         check_fail $? "Nexthop addition succeeded when should fail"
 
         nexthop_resource_check 1
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Single nexthop add failure"
 
         $IP nexthop flush &> /dev/null
         nexthop_resource_set 9999
 }
 
 nexthop_group_add_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         $IP nexthop add id 10 group 1/2
         nexthop_check "id 10" "id 10 group 1/2 trap"
         check_err $? "Unexpected nexthop group entry"
 
         nexthop_resource_check 4
         check_err $? "Wrong nexthop occupancy"
 
         $IP nexthop del id 10
         nexthop_resource_check 2
         check_err $? "Wrong nexthop occupancy after delete"
 
         $IP nexthop add id 10 group 1,20/2,39
         nexthop_check "id 10" "id 10 group 1,20/2,39 trap"
         check_err $? "Unexpected weighted nexthop group entry"
 
         nexthop_resource_check 61
         check_err $? "Wrong weighted nexthop occupancy"
 
         $IP nexthop del id 10
         nexthop_resource_check 2
         check_err $? "Wrong nexthop occupancy after delete"
 
         log_test "Nexthop group add and delete"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_group_add_err_test()
 {
         RET=0
 
         nexthop_resource_set 2
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         $IP nexthop add id 10 group 1/2 &> /dev/null
         check_fail $? "Nexthop group addition succeeded when should fail"
 
         nexthop_resource_check 2
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Nexthop group add failure"
 
         $IP nexthop flush &> /dev/null
         nexthop_resource_set 9999
 }
 
 nexthop_res_group_add_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         $IP nexthop add id 10 group 1/2 type resilient buckets 4
         nexthop_check "id 10" "id 10 group 1/2 type resilient buckets 4 idle_timer 120 unbalanced_timer 0 unbalanced_time 0 trap"
         check_err $? "Unexpected nexthop group entry"
 
         nexthop_bucket_nhid_count_check 10 1 2
         check_err $? "Wrong nexthop buckets count"
         nexthop_bucket_nhid_count_check 10 2 2
         check_err $? "Wrong nexthop buckets count"
 
         nexthop_resource_check 6
         check_err $? "Wrong nexthop occupancy"
 
         $IP nexthop del id 10
         nexthop_resource_check 2
         check_err $? "Wrong nexthop occupancy after delete"
 
         $IP nexthop add id 10 group 1,3/2,2 type resilient buckets 5
         nexthop_check "id 10" "id 10 group 1,3/2,2 type resilient buckets 5 idle_timer 120 unbalanced_timer 0 unbalanced_time 0 trap"
         check_err $? "Unexpected weighted nexthop group entry"
 
         nexthop_bucket_nhid_count_check 10 1 3
         check_err $? "Wrong nexthop buckets count"
         nexthop_bucket_nhid_count_check 10 2 2
         check_err $? "Wrong nexthop buckets count"
 
         nexthop_resource_check 7
         check_err $? "Wrong weighted nexthop occupancy"
 
         $IP nexthop del id 10
         nexthop_resource_check 2
         check_err $? "Wrong nexthop occupancy after delete"
 
         log_test "Resilient nexthop group add and delete"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_res_group_add_err_test()
 {
         RET=0
 
         nexthop_resource_set 2
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         $IP nexthop add id 10 group 1/2 type resilient buckets 4 &> /dev/null
         check_fail $? "Nexthop group addition succeeded when should fail"
 
         nexthop_resource_check 2
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Resilient nexthop group add failure"
 
         $IP nexthop flush &> /dev/null
         nexthop_resource_set 9999
 }
 
 nexthop_group_replace_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 3 via 192.0.2.4 dev dummy1
         $IP nexthop add id 10 group 1/2
 
         $IP nexthop replace id 10 group 1/2/3
         nexthop_check "id 10" "id 10 group 1/2/3 trap"
         check_err $? "Unexpected nexthop group entry"
 
         nexthop_resource_check 6
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Nexthop group replace"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_group_replace_err_test()
 {
         RET=0
 
         nexthop_resource_set 5
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 3 via 192.0.2.4 dev dummy1
         $IP nexthop add id 10 group 1/2
 
         $IP nexthop replace id 10 group 1/2/3 &> /dev/null
         check_fail $? "Nexthop group replacement succeeded when should fail"
 
         nexthop_check "id 10" "id 10 group 1/2 trap"
         check_err $? "Unexpected nexthop group entry after failure"
 
         nexthop_resource_check 5
         check_err $? "Wrong nexthop occupancy after failure"
 
         log_test "Nexthop group replace failure"
 
         $IP nexthop flush &> /dev/null
         nexthop_resource_set 9999
 }
 
 nexthop_res_group_replace_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 3 via 192.0.2.4 dev dummy1
         $IP nexthop add id 10 group 1/2 type resilient buckets 6
 
         $IP nexthop replace id 10 group 1/2/3 type resilient
         nexthop_check "id 10" "id 10 group 1/2/3 type resilient buckets 6 idle_timer 120 unbalanced_timer 0 unbalanced_time 0 trap"
         check_err $? "Unexpected nexthop group entry"
 
         nexthop_bucket_nhid_count_check 10 1 2
         check_err $? "Wrong nexthop buckets count"
         nexthop_bucket_nhid_count_check 10 2 2
         check_err $? "Wrong nexthop buckets count"
         nexthop_bucket_nhid_count_check 10 3 2
         check_err $? "Wrong nexthop buckets count"
 
         nexthop_resource_check 9
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Resilient nexthop group replace"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_res_group_replace_err_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 3 via 192.0.2.4 dev dummy1
         $IP nexthop add id 10 group 1/2 type resilient buckets 6
 
         ip netns exec testns1 \
                 echo 1 > $DEBUGFS_NET_DIR/fib/fail_res_nexthop_group_replace
         $IP nexthop replace id 10 group 1/2/3 type resilient &> /dev/null
         check_fail $? "Nexthop group replacement succeeded when should fail"
 
         nexthop_check "id 10" "id 10 group 1/2 type resilient buckets 6 idle_timer 120 unbalanced_timer 0 unbalanced_time 0 trap"
         check_err $? "Unexpected nexthop group entry after failure"
 
         nexthop_bucket_nhid_count_check 10 1 3
         check_err $? "Wrong nexthop buckets count"
         nexthop_bucket_nhid_count_check 10 2 3
         check_err $? "Wrong nexthop buckets count"
 
         nexthop_resource_check 9
         check_err $? "Wrong nexthop occupancy after failure"
 
         log_test "Resilient nexthop group replace failure"
 
         $IP nexthop flush &> /dev/null
         ip netns exec testns1 \
                 echo 0 > $DEBUGFS_NET_DIR/fib/fail_res_nexthop_group_replace
 }
 
 nexthop_res_mark_buckets_busy()
 {
         local group_id=$1; shift
         local nhid=$1; shift
         local count=$1; shift
         local index
 
         for index in $($IP -j nexthop bucket show id $group_id nhid $nhid |
                        jq '.[].bucket.index' | head -n ${count:--0})
         do
                 echo $group_id $index \
                         > $DEBUGFS_NET_DIR/fib/nexthop_bucket_activity
         done
 }
 
 nexthop_res_num_nhid_buckets()
 {
         local group_id=$1; shift
         local nhid=$1; shift
 
         $IP -j nexthop bucket show id $group_id nhid $nhid | jq length
 }
 
 nexthop_res_group_idle_timer_test()
 {
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         RET=0
 
         $IP nexthop add id 10 group 1/2 type resilient buckets 8 idle_timer 4
         nexthop_res_mark_buckets_busy 10 1
         $IP nexthop replace id 10 group 1/2,3 type resilient
 
         nexthop_bucket_nhid_count_check 10  1 4  2 4
         check_err $? "Group expected to be unbalanced"
 
         sleep 6
 
         nexthop_bucket_nhid_count_check 10  1 2  2 6
         check_err $? "Group expected to be balanced"
 
         log_test "Bucket migration after idle timer"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_res_group_idle_timer_del_test()
 {
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 3 via 192.0.2.3 dev dummy1
 
         RET=0
 
         $IP nexthop add id 10 group 1,50/2,50/3,1 \
             type resilient buckets 8 idle_timer 6
         nexthop_res_mark_buckets_busy 10 1
         $IP nexthop replace id 10 group 1,50/2,150/3,1 type resilient
 
         nexthop_bucket_nhid_count_check 10  1 4  2 4  3 0
         check_err $? "Group expected to be unbalanced"
 
         sleep 4
 
         # Deletion prompts group replacement. Check that the bucket timers
         # are kept.
         $IP nexthop delete id 3
 
         nexthop_bucket_nhid_count_check 10  1 4  2 4
         check_err $? "Group expected to still be unbalanced"
 
         sleep 4
 
         nexthop_bucket_nhid_count_check 10  1 2  2 6
         check_err $? "Group expected to be balanced"
 
         log_test "Bucket migration after idle timer (with delete)"
 
         $IP nexthop flush &> /dev/null
 }
 
 __nexthop_res_group_increase_timer_test()
 {
         local timer=$1; shift
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         RET=0
 
         $IP nexthop add id 10 group 1/2 type resilient buckets 8 $timer 4
         nexthop_res_mark_buckets_busy 10 1
         $IP nexthop replace id 10 group 1/2,3 type resilient
 
         nexthop_bucket_nhid_count_check 10 2 6
         check_fail $? "Group expected to be unbalanced"
 
         sleep 2
         $IP nexthop replace id 10 group 1/2,3 type resilient $timer 8
         sleep 4
 
         # 6 seconds, past the original timer.
         nexthop_bucket_nhid_count_check 10 2 6
         check_fail $? "Group still expected to be unbalanced"
 
         sleep 4
 
         # 10 seconds, past the new timer.
         nexthop_bucket_nhid_count_check 10 2 6
         check_err $? "Group expected to be balanced"
 
         log_test "Bucket migration after $timer increase"
 
         $IP nexthop flush &> /dev/null
 }
 
 __nexthop_res_group_decrease_timer_test()
 {
         local timer=$1; shift
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         RET=0
 
         $IP nexthop add id 10 group 1/2 type resilient buckets 8 $timer 8
         nexthop_res_mark_buckets_busy 10 1
         $IP nexthop replace id 10 group 1/2,3 type resilient
 
         nexthop_bucket_nhid_count_check 10 2 6
         check_fail $? "Group expected to be unbalanced"
 
         sleep 2
         $IP nexthop replace id 10 group 1/2,3 type resilient $timer 4
         sleep 4
 
         # 6 seconds, past the new timer, before the old timer.
         nexthop_bucket_nhid_count_check 10 2 6
         check_err $? "Group expected to be balanced"
 
         log_test "Bucket migration after $timer decrease"
 
         $IP nexthop flush &> /dev/null
 }
 
 __nexthop_res_group_increase_timer_del_test()
 {
         local timer=$1; shift
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 3 via 192.0.2.3 dev dummy1
 
         RET=0
 
         $IP nexthop add id 10 group 1,100/2,100/3,1 \
             type resilient buckets 8 $timer 4
         nexthop_res_mark_buckets_busy 10 1
         $IP nexthop replace id 10 group 1,100/2,300/3,1 type resilient
 
         nexthop_bucket_nhid_count_check 10 2 6
         check_fail $? "Group expected to be unbalanced"
 
         sleep 2
         $IP nexthop replace id 10 group 1/2,3 type resilient $timer 8
         sleep 4
 
         # 6 seconds, past the original timer.
         nexthop_bucket_nhid_count_check 10 2 6
         check_fail $? "Group still expected to be unbalanced"
 
         sleep 4
 
         # 10 seconds, past the new timer.
         nexthop_bucket_nhid_count_check 10 2 6
         check_err $? "Group expected to be balanced"
 
         log_test "Bucket migration after $timer increase"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_res_group_increase_idle_timer_test()
 {
         __nexthop_res_group_increase_timer_test idle_timer
 }
 
 nexthop_res_group_decrease_idle_timer_test()
 {
         __nexthop_res_group_decrease_timer_test idle_timer
 }
 
 nexthop_res_group_unbalanced_timer_test()
 {
         local i
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         RET=0
 
         $IP nexthop add id 10 group 1/2 type resilient \
             buckets 8 idle_timer 6 unbalanced_timer 10
         nexthop_res_mark_buckets_busy 10 1
         $IP nexthop replace id 10 group 1/2,3 type resilient
 
         for i in 1 2; do
                 sleep 4
                 nexthop_bucket_nhid_count_check 10  1 4  2 4
                 check_err $? "$i: Group expected to be unbalanced"
                 nexthop_res_mark_buckets_busy 10 1
         done
 
         # 3 x sleep 4 > unbalanced timer 10
         sleep 4
         nexthop_bucket_nhid_count_check 10  1 2  2 6
         check_err $? "Group expected to be balanced"
 
         log_test "Bucket migration after unbalanced timer"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_res_group_unbalanced_timer_del_test()
 {
         local i
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 3 via 192.0.2.3 dev dummy1
 
         RET=0
 
         $IP nexthop add id 10 group 1,50/2,50/3,1 type resilient \
             buckets 8 idle_timer 6 unbalanced_timer 10
         nexthop_res_mark_buckets_busy 10 1
         $IP nexthop replace id 10 group 1,50/2,150/3,1 type resilient
 
         # Check that NH delete does not reset unbalanced time.
         sleep 4
         $IP nexthop delete id 3
         nexthop_bucket_nhid_count_check 10  1 4  2 4
         check_err $? "1: Group expected to be unbalanced"
         nexthop_res_mark_buckets_busy 10 1
 
         sleep 4
         nexthop_bucket_nhid_count_check 10  1 4  2 4
         check_err $? "2: Group expected to be unbalanced"
         nexthop_res_mark_buckets_busy 10 1
 
         # 3 x sleep 4 > unbalanced timer 10
         sleep 4
         nexthop_bucket_nhid_count_check 10  1 2  2 6
         check_err $? "Group expected to be balanced"
 
         log_test "Bucket migration after unbalanced timer (with delete)"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_res_group_no_unbalanced_timer_test()
 {
         local i
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         RET=0
 
         $IP nexthop add id 10 group 1/2 type resilient buckets 8
         nexthop_res_mark_buckets_busy 10 1
         $IP nexthop replace id 10 group 1/2,3 type resilient
 
         for i in $(seq 3); do
                 sleep 60
                 nexthop_bucket_nhid_count_check 10 2 6
                 check_fail $? "$i: Group expected to be unbalanced"
                 nexthop_res_mark_buckets_busy 10 1
         done
 
         log_test "Buckets never force-migrated without unbalanced timer"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_res_group_short_unbalanced_timer_test()
 {
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         RET=0
 
         $IP nexthop add id 10 group 1/2 type resilient \
             buckets 8 idle_timer 120 unbalanced_timer 4
         nexthop_res_mark_buckets_busy 10 1
         $IP nexthop replace id 10 group 1/2,3 type resilient
 
         nexthop_bucket_nhid_count_check 10 2 6
         check_fail $? "Group expected to be unbalanced"
 
         sleep 5
 
         nexthop_bucket_nhid_count_check 10 2 6
         check_err $? "Group expected to be balanced"
 
         log_test "Bucket migration after unbalanced < idle timer"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_res_group_increase_unbalanced_timer_test()
 {
         __nexthop_res_group_increase_timer_test unbalanced_timer
 }
 
 nexthop_res_group_decrease_unbalanced_timer_test()
 {
         __nexthop_res_group_decrease_timer_test unbalanced_timer
 }
 
 nexthop_res_group_force_migrate_busy_test()
 {
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 
         RET=0
 
         $IP nexthop add id 10 group 1/2 type resilient \
             buckets 8 idle_timer 120
         nexthop_res_mark_buckets_busy 10 1
         $IP nexthop replace id 10 group 1/2,3 type resilient
 
         nexthop_bucket_nhid_count_check 10 2 6
         check_fail $? "Group expected to be unbalanced"
 
         $IP nexthop replace id 10 group 2 type resilient
         nexthop_bucket_nhid_count_check 10 2 8
         check_err $? "All buckets expected to have migrated"
 
         log_test "Busy buckets force-migrated when NH removed"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_single_replace_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 
         $IP nexthop replace id 1 via 192.0.2.3 dev dummy1
         nexthop_check "id 1" "id 1 via 192.0.2.3 dev dummy1 scope link trap"
         check_err $? "Unexpected nexthop entry"
 
         nexthop_resource_check 1
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Single nexthop replace"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_single_replace_err_test()
 {
         RET=0
 
         # This is supposed to cause the replace to fail because the new nexthop
         # is programmed before deleting the replaced one.
         nexthop_resource_set 1
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 
         $IP nexthop replace id 1 via 192.0.2.3 dev dummy1 &> /dev/null
         check_fail $? "Nexthop replace succeeded when should fail"
 
         nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
         check_err $? "Unexpected nexthop entry after failure"
 
         nexthop_resource_check 1
         check_err $? "Wrong nexthop occupancy after failure"
 
         log_test "Single nexthop replace failure"
 
         $IP nexthop flush &> /dev/null
         nexthop_resource_set 9999
 }
 
 nexthop_single_in_group_replace_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 10 group 1/2
 
         $IP nexthop replace id 1 via 192.0.2.4 dev dummy1
         check_err $? "Failed to replace nexthop when should not"
 
         nexthop_check "id 10" "id 10 group 1/2 trap"
         check_err $? "Unexpected nexthop group entry"
 
         nexthop_resource_check 4
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Single nexthop replace while in group"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_single_in_group_replace_err_test()
 {
         RET=0
 
         nexthop_resource_set 5
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 10 group 1/2
 
         $IP nexthop replace id 1 via 192.0.2.4 dev dummy1 &> /dev/null
         check_fail $? "Nexthop replacement succeeded when should fail"
 
         nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
         check_err $? "Unexpected nexthop entry after failure"
 
         nexthop_check "id 10" "id 10 group 1/2 trap"
         check_err $? "Unexpected nexthop group entry after failure"
 
         nexthop_resource_check 4
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Single nexthop replace while in group failure"
 
         $IP nexthop flush &> /dev/null
         nexthop_resource_set 9999
 }
 
 nexthop_single_in_res_group_replace_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 10 group 1/2 type resilient buckets 4
 
         $IP nexthop replace id 1 via 192.0.2.4 dev dummy1
         check_err $? "Failed to replace nexthop when should not"
 
         nexthop_check "id 10" "id 10 group 1/2 type resilient buckets 4 idle_timer 120 unbalanced_timer 0 unbalanced_time 0 trap"
         check_err $? "Unexpected nexthop group entry"
 
         nexthop_bucket_nhid_count_check 10  1 2  2 2
         check_err $? "Wrong nexthop buckets count"
 
         nexthop_resource_check 6
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Single nexthop replace while in resilient group"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_single_in_res_group_replace_err_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 10 group 1/2 type resilient buckets 4
 
         ip netns exec testns1 \
                 echo 1 > $DEBUGFS_NET_DIR/fib/fail_nexthop_bucket_replace
         $IP nexthop replace id 1 via 192.0.2.4 dev dummy1 &> /dev/null
         check_fail $? "Nexthop replacement succeeded when should fail"
 
         nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
         check_err $? "Unexpected nexthop entry after failure"
 
         nexthop_check "id 10" "id 10 group 1/2 type resilient buckets 4 idle_timer 120 unbalanced_timer 0 unbalanced_time 0 trap"
         check_err $? "Unexpected nexthop group entry after failure"
 
         nexthop_bucket_nhid_count_check 10  1 2  2 2
         check_err $? "Wrong nexthop buckets count"
 
         nexthop_resource_check 6
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Single nexthop replace while in resilient group failure"
 
         $IP nexthop flush &> /dev/null
         ip netns exec testns1 \
                 echo 0 > $DEBUGFS_NET_DIR/fib/fail_nexthop_bucket_replace
 }
 
 nexthop_single_in_group_delete_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 10 group 1/2
 
         $IP nexthop del id 1
         nexthop_check "id 10" "id 10 group 2 trap"
         check_err $? "Unexpected nexthop group entry"
 
         nexthop_resource_check 2
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Single nexthop delete while in group"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_single_in_group_delete_err_test()
 {
         RET=0
 
         # First, nexthop 1 will be deleted, which will reduce the occupancy to
         # 5. Afterwards, a replace notification will be sent for nexthop group
         # 10 with only two nexthops. Since the new group is allocated before
         # the old is deleted, the replacement will fail as it will result in an
         # occupancy of 7.
         nexthop_resource_set 6
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 3 via 192.0.2.4 dev dummy1
         $IP nexthop add id 10 group 1/2/3
 
         $IP nexthop del id 1
 
         nexthop_resource_check 5
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Single nexthop delete while in group failure"
 
         $IP nexthop flush &> /dev/null
         nexthop_resource_set 9999
 }
 
 nexthop_single_in_res_group_delete_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 10 group 1/2 type resilient buckets 4
 
         $IP nexthop del id 1
         nexthop_check "id 10" "id 10 group 2 type resilient buckets 4 idle_timer 120 unbalanced_timer 0 unbalanced_time 0 trap"
         check_err $? "Unexpected nexthop group entry"
 
         nexthop_bucket_nhid_count_check 10 2 4
         check_err $? "Wrong nexthop buckets count"
 
         nexthop_resource_check 5
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Single nexthop delete while in resilient group"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_single_in_res_group_delete_err_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 3 via 192.0.2.4 dev dummy1
         $IP nexthop add id 10 group 1/2/3 type resilient buckets 6
 
         ip netns exec testns1 \
                 echo 1 > $DEBUGFS_NET_DIR/fib/fail_nexthop_bucket_replace
         $IP nexthop del id 1
 
         # We failed to replace the two nexthop buckets that were originally
         # assigned to nhid 1.
         nexthop_bucket_nhid_count_check 10  2 2  3 2
         check_err $? "Wrong nexthop buckets count"
 
         nexthop_resource_check 8
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Single nexthop delete while in resilient group failure"
 
         $IP nexthop flush &> /dev/null
         ip netns exec testns1 \
                 echo 0 > $DEBUGFS_NET_DIR/fib/fail_nexthop_bucket_replace
 }
 
 nexthop_replay_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 10 group 1/2
 
         $DEVLINK dev reload $DEVLINK_DEV
         check_err $? "Failed to reload when should not"
 
         nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
         check_err $? "Unexpected nexthop entry after reload"
 
         nexthop_check "id 2" "id 2 via 192.0.2.3 dev dummy1 scope link trap"
         check_err $? "Unexpected nexthop entry after reload"
 
         nexthop_check "id 10" "id 10 group 1/2 trap"
         check_err $? "Unexpected nexthop group entry after reload"
 
         nexthop_resource_check 4
         check_err $? "Wrong nexthop occupancy"
 
         log_test "Nexthop replay"
 
         $IP nexthop flush &> /dev/null
 }
 
 nexthop_replay_err_test()
 {
         RET=0
 
         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
         $IP nexthop add id 10 group 1/2
 
         # Reduce size of nexthop resource so that reload will fail.
         $DEVLINK resource set $DEVLINK_DEV path nexthops size 3
         $DEVLINK dev reload $DEVLINK_DEV &> /dev/null
         check_fail $? "Reload succeeded when should fail"
 
         $DEVLINK resource set $DEVLINK_DEV path nexthops size 9999
         $DEVLINK dev reload $DEVLINK_DEV
         check_err $? "Failed to reload when should not"
 
         log_test "Nexthop replay failure"
 
         $IP nexthop flush &> /dev/null
 }
 
 setup_prepare()
 {
         local netdev
 
         modprobe netdevsim &> /dev/null
 
         echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device
         while [ ! -d $SYSFS_NET_DIR ] ; do :; done
 
         set -e
 
         ip netns add testns1
         devlink dev reload $DEVLINK_DEV netns testns1
 
         IP="ip -netns testns1"
         DEVLINK="devlink -N testns1"
 
         $IP link add name dummy1 up type dummy
         $IP address add 192.0.2.1/24 dev dummy1
 
         set +e
 }
 
 cleanup()
 {
         pre_cleanup
         ip netns del testns1
         echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device
         modprobe -r netdevsim &> /dev/null
 }
 
 trap cleanup EXIT
 
 setup_prepare
 
 tests_run
 
 exit $EXIT_STATUS

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