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Commit 4fb20ae1 authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

selftests: forwarding: Test IPv6 weighted nexthops 



Have one host generate 16K IPv6 echo requests with a random flow label
and check that they are distributed between both multipath links
according to the provided weights.

Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3d578d87

tools/testing/selftests/net/forwarding/router_multipath.sh

+36 −0
Original line number Diff line number Diff line
@@ -226,12 +226,48 @@ multipath4_test() 
       sysctl -q -w net.ipv4.fib_multipath_hash_policy=$hash_policy

}



multipath6_test()

{

       local weight_rp12=$1

       local weight_rp13=$2

       local t0_rp12 t0_rp13 t1_rp12 t1_rp13

       local packets_rp12 packets_rp13



       ip route replace 2001:db8:2::/64 vrf vrf-r1 \

	       nexthop via fe80:2::22 dev $rp12 weight $weight_rp12 \

	       nexthop via fe80:3::23 dev $rp13 weight $weight_rp13



       t0_rp12=$(link_stats_tx_packets_get $rp12)

       t0_rp13=$(link_stats_tx_packets_get $rp13)



       # Generate 16384 echo requests, each with a random flow label.

       for _ in $(seq 1 16384); do

	       ip vrf exec vrf-h1 ping 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null

       done



       t1_rp12=$(link_stats_tx_packets_get $rp12)

       t1_rp13=$(link_stats_tx_packets_get $rp13)



       let "packets_rp12 = $t1_rp12 - $t0_rp12"

       let "packets_rp13 = $t1_rp13 - $t0_rp13"

       multipath_eval $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13



       ip route replace 2001:db8:2::/64 vrf vrf-r1 \

	       nexthop via fe80:2::22 dev $rp12 \

	       nexthop via fe80:3::23 dev $rp13

}



multipath_test()

{

	log_info "Running IPv4 multipath tests"

	multipath4_test 1 1

	multipath4_test 2 1

	multipath4_test 11 45



	log_info "Running IPv6 multipath tests"

	multipath6_test 1 1

	multipath6_test 2 1

	multipath6_test 11 45

}



setup_prepare()