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Commit 91a5c1ec authored by David Ahern's avatar David Ahern Committed by David S. Miller
Browse files

selftests: forwarding: Add multipath test for L4 hashing 



Add IPv6 multipath test using L4 hashing. Created with inputs from
Ido Schimmel.

Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Reviewed-by: default avatarIdo Schimmel <idosch@mellanox.com>
Tested-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent de7a0f87

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

+44 −0
Original line number Diff line number Diff line
@@ -235,6 +235,45 @@ multipath4_test() 
       sysctl -q -w net.ipv4.fib_multipath_hash_policy=$hash_policy

}



multipath6_l4_test()

{

       local desc="$1"

       local weight_rp12=$2

       local weight_rp13=$3

       local t0_rp12 t0_rp13 t1_rp12 t1_rp13

       local packets_rp12 packets_rp13

       local hash_policy



       # Transmit multiple flows from h1 to h2 and make sure they are

       # distributed between both multipath links (rp12 and rp13)

       # according to the configured weights.

       hash_policy=$(sysctl -n net.ipv6.fib_multipath_hash_policy)

       sysctl -q -w net.ipv6.fib_multipath_hash_policy=1



       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)



       $MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \

	       -d 1msec -t udp "sp=1024,dp=0-32768"



       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 "$desc" $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



       sysctl -q -w net.ipv6.fib_multipath_hash_policy=$hash_policy

}



multipath6_test()

{

       local desc="$1"
@@ -278,6 +317,11 @@ multipath_test() 
	multipath6_test "ECMP" 1 1

	multipath6_test "Weighted MP 2:1" 2 1

	multipath6_test "Weighted MP 11:45" 11 45



	log_info "Running IPv6 L4 hash multipath tests"

	multipath6_l4_test "ECMP" 1 1

	multipath6_l4_test "Weighted MP 2:1" 2 1

	multipath6_l4_test "Weighted MP 11:45" 11 45

}



setup_prepare()