Commit 2800f248 authored by Stephen Suryaputra's avatar Stephen Suryaputra Committed by David S. Miller
Browse files

selftests: forwarding: Test multipath hashing on inner IP pkts for GRE tunnel 



Add selftest scripts for multipath hashing on inner IP pkts when there
is a single GRE tunnel but there are multiple underlay routes to reach
the other end of the tunnel.

Four cases are covered in these scripts:
    - IPv4 inner, IPv4 outer
    - IPv6 inner, IPv4 outer
    - IPv4 inner, IPv6 outer
    - IPv6 inner, IPv6 outer

Reviewed-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarStephen Suryaputra <ssuryaextr@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d8f74f09

tools/testing/selftests/net/forwarding/gre_inner_v4_multipath.sh

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#!/bin/bash

# SPDX-License-Identifier: GPL-2.0



# Test traffic distribution when there are multiple routes between an IPv4

# GRE tunnel. The tunnel carries IPv4 traffic between multiple hosts.

# Multiple routes are in the underlay network. With the default multipath

# policy, SW2 will only look at the outer IP addresses, hence only a single

# route would be used.

#

# +-------------------------+

# | H1                      |

# |               $h1 +     |

# | 192.0.3.{2-62}/24 |     |

# +-------------------|-----+

#                     |

# +-------------------|------------------------+

# | SW1               |                        |

# |              $ol1 +                        |

# |      192.0.3.1/24                          |

# |                                            |

# |  + g1 (gre)                                |

# |    loc=192.0.2.65                          |

# |    rem=192.0.2.66 --.                      |

# |    tos=inherit      |                      |

# |                     v                      |

# |                     + $ul1                 |

# |                     | 192.0.2.129/28       |

# +---------------------|----------------------+

#                       |

# +---------------------|----------------------+

# | SW2                 |                      |

# |               $ul21 +                      |

# |      192.0.2.130/28                        |

# |                   |                        |

# !   ________________|_____                   |

# |  /                      \                  |

# |  |                      |                  |

# |  + $ul22.111 (vlan)     + $ul22.222 (vlan) |

# |  | 192.0.2.145/28       | 192.0.2.161/28   |

# |  |                      |                  |

# +--|----------------------|------------------+

#    |                      |

# +--|----------------------|------------------+

# |  |                      |                  |

# |  + $ul32.111 (vlan)     + $ul32.222 (vlan) |

# |  | 192.0.2.146/28       | 192.0.2.162/28   |

# |  |                      |                  |

# |  \______________________/                  |

# |                   |                        |

# |                   |                        |

# |               $ul31 +                      |

# |      192.0.2.177/28 |                  SW3 |

# +---------------------|----------------------+

#                       |

# +---------------------|----------------------+

# |                     + $ul4                 |

# |                     ^ 192.0.2.178/28       |

# |                     |                      |

# |  + g2 (gre)         |                      |

# |    loc=192.0.2.66   |                      |

# |    rem=192.0.2.65 --'                      |

# |    tos=inherit                             |

# |                                            |

# |               $ol4 +                       |

# |       192.0.4.1/24 |                   SW4 |

# +--------------------|-----------------------+

#                      |

# +--------------------|---------+

# |                    |         |

# |                $h2 +         |

# |  192.0.4.{2-62}/24        H2 |

# +------------------------------+



ALL_TESTS="

	ping_ipv4

	multipath_ipv4

"



NUM_NETIFS=10

source lib.sh



h1_create()

{

	simple_if_init $h1 192.0.3.2/24

	ip route add vrf v$h1 192.0.4.0/24 via 192.0.3.1

}



h1_destroy()

{

	ip route del vrf v$h1 192.0.4.0/24 via 192.0.3.1

	simple_if_fini $h1 192.0.3.2/24

}



sw1_create()

{

	simple_if_init $ol1 192.0.3.1/24

	__simple_if_init $ul1 v$ol1 192.0.2.129/28



	tunnel_create g1 gre 192.0.2.65 192.0.2.66 tos inherit dev v$ol1

	__simple_if_init g1 v$ol1 192.0.2.65/32

	ip route add vrf v$ol1 192.0.2.66/32 via 192.0.2.130



	ip route add vrf v$ol1 192.0.4.0/24 nexthop dev g1

}



sw1_destroy()

{

	ip route del vrf v$ol1 192.0.4.0/24



	ip route del vrf v$ol1 192.0.2.66/32

	__simple_if_fini g1 192.0.2.65/32

	tunnel_destroy g1



	__simple_if_fini $ul1 192.0.2.129/28

	simple_if_fini $ol1 192.0.3.1/24

}



sw2_create()

{

	simple_if_init $ul21 192.0.2.130/28

	__simple_if_init $ul22 v$ul21

	vlan_create $ul22 111 v$ul21 192.0.2.145/28

	vlan_create $ul22 222 v$ul21 192.0.2.161/28



	ip route add vrf v$ul21 192.0.2.65/32 via 192.0.2.129

	ip route add vrf v$ul21 192.0.2.66/32 \

	   nexthop via 192.0.2.146 \

	   nexthop via 192.0.2.162

}



sw2_destroy()

{

	ip route del vrf v$ul21 192.0.2.66/32

	ip route del vrf v$ul21 192.0.2.65/32



	vlan_destroy $ul22 222

	vlan_destroy $ul22 111

	__simple_if_fini $ul22

	simple_if_fini $ul21 192.0.2.130/28

}



sw3_create()

{

	simple_if_init $ul31 192.0.2.177/28

	__simple_if_init $ul32 v$ul31

	vlan_create $ul32 111 v$ul31 192.0.2.146/28

	vlan_create $ul32 222 v$ul31 192.0.2.162/28



	ip route add vrf v$ul31 192.0.2.66/32 via 192.0.2.178

	ip route add vrf v$ul31 192.0.2.65/32 \

	   nexthop via 192.0.2.145 \

	   nexthop via 192.0.2.161



	tc qdisc add dev $ul32 clsact

	tc filter add dev $ul32 ingress pref 111 prot 802.1Q \

	   flower vlan_id 111 action pass

	tc filter add dev $ul32 ingress pref 222 prot 802.1Q \

	   flower vlan_id 222 action pass

}



sw3_destroy()

{

	tc qdisc del dev $ul32 clsact



	ip route del vrf v$ul31 192.0.2.65/32

	ip route del vrf v$ul31 192.0.2.66/32



	vlan_destroy $ul32 222

	vlan_destroy $ul32 111

	__simple_if_fini $ul32

	simple_if_fini $ul31 192.0.2.177/28

}



sw4_create()

{

	simple_if_init $ol4 192.0.4.1/24

	__simple_if_init $ul4 v$ol4 192.0.2.178/28



	tunnel_create g2 gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol4

	__simple_if_init g2 v$ol4 192.0.2.66/32

	ip route add vrf v$ol4 192.0.2.65/32 via 192.0.2.177



	ip route add vrf v$ol4 192.0.3.0/24 nexthop dev g2

}



sw4_destroy()

{

	ip route del vrf v$ol4 192.0.3.0/24



	ip route del vrf v$ol4 192.0.2.65/32

	__simple_if_fini g2 192.0.2.66/32

	tunnel_destroy g2



	__simple_if_fini $ul4 192.0.2.178/28

	simple_if_fini $ol4 192.0.4.1/24

}



h2_create()

{

	simple_if_init $h2 192.0.4.2/24

	ip route add vrf v$h2 192.0.3.0/24 via 192.0.4.1

}



h2_destroy()

{

	ip route del vrf v$h2 192.0.3.0/24 via 192.0.4.1

	simple_if_fini $h2 192.0.4.2/24

}



setup_prepare()

{

	h1=${NETIFS[p1]}



	ol1=${NETIFS[p2]}

	ul1=${NETIFS[p3]}



	ul21=${NETIFS[p4]}

	ul22=${NETIFS[p5]}



	ul32=${NETIFS[p6]}

	ul31=${NETIFS[p7]}



	ul4=${NETIFS[p8]}

	ol4=${NETIFS[p9]}



	h2=${NETIFS[p10]}



	vrf_prepare

	h1_create

	sw1_create

	sw2_create

	sw3_create

	sw4_create

	h2_create



	forwarding_enable

}



cleanup()

{

	pre_cleanup



	forwarding_restore



	h2_destroy

	sw4_destroy

	sw3_destroy

	sw2_destroy

	sw1_destroy

	h1_destroy

	vrf_cleanup

}



multipath4_test()

{

	local what=$1; shift

	local weight1=$1; shift

	local weight2=$1; shift



	sysctl_set net.ipv4.fib_multipath_hash_policy 2

	ip route replace vrf v$ul21 192.0.2.66/32 \

	   nexthop via 192.0.2.146 weight $weight1 \

	   nexthop via 192.0.2.162 weight $weight2



	local t0_111=$(tc_rule_stats_get $ul32 111 ingress)

	local t0_222=$(tc_rule_stats_get $ul32 222 ingress)



	ip vrf exec v$h1 \

	   $MZ $h1 -q -p 64 -A "192.0.3.2-192.0.3.62" -B "192.0.4.2-192.0.4.62" \

	       -d 1msec -c 50 -t udp "sp=1024,dp=1024"

	sleep 1



	local t1_111=$(tc_rule_stats_get $ul32 111 ingress)

	local t1_222=$(tc_rule_stats_get $ul32 222 ingress)



	local d111=$((t1_111 - t0_111))

	local d222=$((t1_222 - t0_222))

	multipath_eval "$what" $weight1 $weight2 $d111 $d222



	ip route replace vrf v$ul21 192.0.2.66/32 \

	   nexthop via 192.0.2.146 \

	   nexthop via 192.0.2.162

	sysctl_restore net.ipv4.fib_multipath_hash_policy

}



ping_ipv4()

{

	ping_test $h1 192.0.4.2

}



multipath_ipv4()

{

	log_info "Running IPv4 over GRE over IPv4 multipath tests"

	multipath4_test "ECMP" 1 1

	multipath4_test "Weighted MP 2:1" 2 1

	multipath4_test "Weighted MP 11:45" 11 45

}



trap cleanup EXIT



setup_prepare

setup_wait

tests_run



exit $EXIT_STATUS

tools/testing/selftests/net/forwarding/gre_inner_v6_multipath.sh

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Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0



# Test traffic distribution when there are multiple routes between an IPv4

# GRE tunnel. The tunnel carries IPv6 traffic between multiple hosts.

# Multiple routes are in the underlay network. With the default multipath

# policy, SW2 will only look at the outer IP addresses, hence only a single

# route would be used.

#

# +-------------------------+

# | H1                      |

# |               $h1 +     |

# |  2001:db8:1::2/64 |     |

# +-------------------|-----+

#                     |

# +-------------------|------------------------+

# | SW1               |                        |

# |              $ol1 +                        |

# |  2001:db8:1::1/64                          |

# |                                            |

# |  + g1 (gre)                                |

# |    loc=192.0.2.65                          |

# |    rem=192.0.2.66 --.                      |

# |    tos=inherit      |                      |

# |                     v                      |

# |                     + $ul1                 |

# |                     | 192.0.2.129/28       |

# +---------------------|----------------------+

#                       |

# +---------------------|----------------------+

# | SW2                 |                      |

# |               $ul21 +                      |

# |      192.0.2.130/28                        |

# |                   |                        |

# !   ________________|_____                   |

# |  /                      \                  |

# |  |                      |                  |

# |  + $ul22.111 (vlan)     + $ul22.222 (vlan) |

# |  | 192.0.2.145/28       | 192.0.2.161/28   |

# |  |                      |                  |

# +--|----------------------|------------------+

#    |                      |

# +--|----------------------|------------------+

# |  |                      |                  |

# |  + $ul32.111 (vlan)     + $ul32.222 (vlan) |

# |  | 192.0.2.146/28       | 192.0.2.162/28   |

# |  |                      |                  |

# |  \______________________/                  |

# |                   |                        |

# |                   |                        |

# |               $ul31 +                      |

# |      192.0.2.177/28 |                  SW3 |

# +---------------------|----------------------+

#                       |

# +---------------------|----------------------+

# |                     + $ul4                 |

# |                     ^ 192.0.2.178/28       |

# |                     |                      |

# |  + g2 (gre)         |                      |

# |    loc=192.0.2.66   |                      |

# |    rem=192.0.2.65 --'                      |

# |    tos=inherit                             |

# |                                            |

# |               $ol4 +                       |

# |   2001:db8:2::1/64 |                   SW4 |

# +--------------------|-----------------------+

#                      |

# +--------------------|---------+

# |                    |         |

# |                $h2 +         |

# |   2001:db8:2::2/64        H2 |

# +------------------------------+



ALL_TESTS="

	ping_ipv6

	multipath_ipv6

"



NUM_NETIFS=10

source lib.sh



h1_create()

{

	simple_if_init $h1 2001:db8:1::2/64

	ip -6 route add vrf v$h1 2001:db8:2::/64 via 2001:db8:1::1

}



h1_destroy()

{

	ip -6 route del vrf v$h1 2001:db8:2::/64 via 2001:db8:1::1

	simple_if_fini $h1 2001:db8:1::2/64

}



sw1_create()

{

	simple_if_init $ol1 2001:db8:1::1/64

	__simple_if_init $ul1 v$ol1 192.0.2.129/28



	tunnel_create g1 gre 192.0.2.65 192.0.2.66 tos inherit dev v$ol1

	__simple_if_init g1 v$ol1 192.0.2.65/32

	ip route add vrf v$ol1 192.0.2.66/32 via 192.0.2.130



	ip -6 route add vrf v$ol1 2001:db8:2::/64 dev g1

}



sw1_destroy()

{

	ip -6 route del vrf v$ol1 2001:db8:2::/64



	ip route del vrf v$ol1 192.0.2.66/32

	__simple_if_fini g1 192.0.2.65/32

	tunnel_destroy g1



	__simple_if_fini $ul1 192.0.2.129/28

	simple_if_fini $ol1 2001:db8:1::1/64

}



sw2_create()

{

	simple_if_init $ul21 192.0.2.130/28

	__simple_if_init $ul22 v$ul21

	vlan_create $ul22 111 v$ul21 192.0.2.145/28

	vlan_create $ul22 222 v$ul21 192.0.2.161/28



	ip route add vrf v$ul21 192.0.2.65/32 via 192.0.2.129

	ip route add vrf v$ul21 192.0.2.66/32 \

	   nexthop via 192.0.2.146 \

	   nexthop via 192.0.2.162

}



sw2_destroy()

{

	ip route del vrf v$ul21 192.0.2.66/32

	ip route del vrf v$ul21 192.0.2.65/32



	vlan_destroy $ul22 222

	vlan_destroy $ul22 111

	__simple_if_fini $ul22

	simple_if_fini $ul21 192.0.2.130/28

}



sw3_create()

{

	simple_if_init $ul31 192.0.2.177/28

	__simple_if_init $ul32 v$ul31

	vlan_create $ul32 111 v$ul31 192.0.2.146/28

	vlan_create $ul32 222 v$ul31 192.0.2.162/28



	ip route add vrf v$ul31 192.0.2.66/32 via 192.0.2.178

	ip route add vrf v$ul31 192.0.2.65/32 \

	   nexthop via 192.0.2.145 \

	   nexthop via 192.0.2.161



	tc qdisc add dev $ul32 clsact

	tc filter add dev $ul32 ingress pref 111 prot 802.1Q \

	   flower vlan_id 111 action pass

	tc filter add dev $ul32 ingress pref 222 prot 802.1Q \

	   flower vlan_id 222 action pass

}



sw3_destroy()

{

	tc qdisc del dev $ul32 clsact



	ip route del vrf v$ul31 192.0.2.65/32

	ip route del vrf v$ul31 192.0.2.66/32



	vlan_destroy $ul32 222

	vlan_destroy $ul32 111

	__simple_if_fini $ul32

	simple_if_fini $ul31 192.0.2.177/28

}



sw4_create()

{

	simple_if_init $ol4 2001:db8:2::1/64

	__simple_if_init $ul4 v$ol4 192.0.2.178/28



	tunnel_create g2 gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol4

	__simple_if_init g2 v$ol4 192.0.2.66/32

	ip route add vrf v$ol4 192.0.2.65/32 via 192.0.2.177



	ip -6 route add vrf v$ol4 2001:db8:1::/64 dev g2

}



sw4_destroy()

{

	ip -6 route del vrf v$ol4 2001:db8:1::/64



	ip route del vrf v$ol4 192.0.2.65/32

	__simple_if_fini g2 192.0.2.66/32

	tunnel_destroy g2



	__simple_if_fini $ul4 192.0.2.178/28

	simple_if_fini $ol4 2001:db8:2::1/64

}



h2_create()

{

	simple_if_init $h2 2001:db8:2::2/64

	ip -6 route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1

}



h2_destroy()

{

	ip -6 route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1

	simple_if_fini $h2 2001:db8:2::2/64

}



setup_prepare()

{

	h1=${NETIFS[p1]}



	ol1=${NETIFS[p2]}

	ul1=${NETIFS[p3]}



	ul21=${NETIFS[p4]}

	ul22=${NETIFS[p5]}



	ul32=${NETIFS[p6]}

	ul31=${NETIFS[p7]}



	ul4=${NETIFS[p8]}

	ol4=${NETIFS[p9]}



	h2=${NETIFS[p10]}



	vrf_prepare

	h1_create

	sw1_create

	sw2_create

	sw3_create

	sw4_create

	h2_create



	forwarding_enable

}



cleanup()

{

	pre_cleanup



	forwarding_restore



	h2_destroy

	sw4_destroy

	sw3_destroy

	sw2_destroy

	sw1_destroy

	h1_destroy

	vrf_cleanup

}



multipath6_test()

{

	local what=$1; shift

	local weight1=$1; shift

	local weight2=$1; shift



	sysctl_set net.ipv4.fib_multipath_hash_policy 2

	ip route replace vrf v$ul21 192.0.2.66/32 \

	   nexthop via 192.0.2.146 weight $weight1 \

	   nexthop via 192.0.2.162 weight $weight2



	local t0_111=$(tc_rule_stats_get $ul32 111 ingress)

	local t0_222=$(tc_rule_stats_get $ul32 222 ingress)



	ip vrf exec v$h1 \

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

	       -B "2001:db8:2::2-2001:db8:2::1e" \

	       -d 1msec -c 50 -t udp "sp=1024,dp=1024"

	sleep 1



	local t1_111=$(tc_rule_stats_get $ul32 111 ingress)

	local t1_222=$(tc_rule_stats_get $ul32 222 ingress)



	local d111=$((t1_111 - t0_111))

	local d222=$((t1_222 - t0_222))

	multipath_eval "$what" $weight1 $weight2 $d111 $d222



	ip route replace vrf v$ul21 192.0.2.66/32 \

	   nexthop via 192.0.2.146 \

	   nexthop via 192.0.2.162

	sysctl_restore net.ipv4.fib_multipath_hash_policy

}



ping_ipv6()

{

	ping_test $h1 2001:db8:2::2

}



multipath_ipv6()

{

	log_info "Running IPv6 over GRE over IPv4 multipath tests"

	multipath6_test "ECMP" 1 1

	multipath6_test "Weighted MP 2:1" 2 1

	multipath6_test "Weighted MP 11:45" 11 45

}



trap cleanup EXIT



setup_prepare

setup_wait

tests_run



exit $EXIT_STATUS

tools/testing/selftests/net/forwarding/ip6gre_inner_v4_multipath.sh

0 → 100755
+304 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0



# Test traffic distribution when there are multiple routes between an IPv6

# GRE tunnel. The tunnel carries IPv4 traffic between multiple hosts.

# Multiple routes are in the underlay network. With the default multipath

# policy, SW2 will only look at the outer IP addresses, hence only a single

# route would be used.

#

# +-------------------------+

# | H1                      |

# |               $h1 +     |

# | 192.0.3.{2-62}/24 |     |

# +-------------------|-----+

#                     |

# +-------------------|-------------------------+

# | SW1               |                         |

# |              $ol1 +                         |

# |      192.0.3.1/24                           |

# |                                             |

# |  + g1 (gre)                                 |

# |    loc=2001:db8:40::1                       |

# |    rem=2001:db8:40::2 --.                   |

# |    tos=inherit          |                   |

# |                         v                   |

# |                         + $ul1              |

# |                         | 2001:db8:80::1/64 |

# +-------------------------|-------------------+

#                           |

# +-------------------------|-------------------+

# | SW2                     |                   |

# |                   $ul21 +                   |

# |       2001:db8:80::2/64                     |

# |                   |                         |

# !   ________________|_____                    |

# |  /                      \                   |

# |  |                      |                   |

# |  + $ul22.111 (vlan)     + $ul22.222 (vlan)  |

# |  | 2001:db8:81::1/64    | 2001:db8:82::1/64 |

# |  |                      |                   |

# +--|----------------------|-------------------+

#    |                      |

# +--|----------------------|-------------------+

# |  |                      |                   |

# |  + $ul32.111 (vlan)     + $ul32.222 (vlan)  |

# |  | 2001:db8:81::2/64    | 2001:db8:82::2/64 |

# |  |                      |                   |

# |  \______________________/                   |

# |                   |                         |

# |                   |                         |

# |                   $ul31 +                   |

# |       2001:db8:83::2/64 |               SW3 |

# +-------------------------|-------------------+

#                           |

# +-------------------------|-------------------+

# |                         + $ul4              |

# |                         ^ 2001:db8:83::1/64 |

# |  + g2 (gre)             |                   |

# |    loc=2001:db8:40::2   |                   |

# |    rem=2001:db8:40::1 --'                   |

# |    tos=inherit                              |

# |                                             |

# |               $ol4 +                        |

# |       192.0.4.1/24 |                    SW4 |

# +--------------------|------------------------+

#                      |

# +--------------------|---------+

# |                    |         |

# |                $h2 +         |

# |  192.0.4.{2-62}/24        H2 |

# +------------------------------+



ALL_TESTS="

	ping_ipv4

	multipath_ipv4

"



NUM_NETIFS=10

source lib.sh



h1_create()

{

	simple_if_init $h1 192.0.3.2/24

	ip route add vrf v$h1 192.0.4.0/24 via 192.0.3.1

}



h1_destroy()

{

	ip route del vrf v$h1 192.0.4.0/24 via 192.0.3.1

	simple_if_fini $h1 192.0.3.2/24

}



sw1_create()

{

	simple_if_init $ol1 192.0.3.1/24

	__simple_if_init $ul1 v$ol1 2001:db8:80::1/64



	tunnel_create g1 ip6gre 2001:db8:40::1 2001:db8:40::2 tos inherit dev v$ol1

	__simple_if_init g1 v$ol1 2001:db8:40::1/128

	ip -6 route add vrf v$ol1 2001:db8:40::2/128 via 2001:db8:80::2



	ip route add vrf v$ol1 192.0.4.0/24 nexthop dev g1

}



sw1_destroy()

{

	ip route del vrf v$ol1 192.0.4.0/24



	ip -6 route del vrf v$ol1 2001:db8:40::2/128

	__simple_if_fini g1 2001:db8:40::1/128

	tunnel_destroy g1



	__simple_if_fini $ul1 2001:db8:80::1/64

	simple_if_fini $ol1 192.0.3.1/24

}



sw2_create()

{

	simple_if_init $ul21 2001:db8:80::2/64

	__simple_if_init $ul22 v$ul21

	vlan_create $ul22 111 v$ul21 2001:db8:81::1/64

	vlan_create $ul22 222 v$ul21 2001:db8:82::1/64



	ip -6 route add vrf v$ul21 2001:db8:40::1/128 via 2001:db8:80::1

	ip -6 route add vrf v$ul21 2001:db8:40::2/128 \

	   nexthop via 2001:db8:81::2 \

	   nexthop via 2001:db8:82::2

}



sw2_destroy()

{

	ip -6 route del vrf v$ul21 2001:db8:40::2/128

	ip -6 route del vrf v$ul21 2001:db8:40::1/128



	vlan_destroy $ul22 222

	vlan_destroy $ul22 111

	__simple_if_fini $ul22

	simple_if_fini $ul21 2001:db8:80::2/64

}



sw3_create()

{

	simple_if_init $ul31 2001:db8:83::2/64

	__simple_if_init $ul32 v$ul31

	vlan_create $ul32 111 v$ul31 2001:db8:81::2/64

	vlan_create $ul32 222 v$ul31 2001:db8:82::2/64



	ip -6 route add vrf v$ul31 2001:db8:40::2/128 via 2001:db8:83::1

	ip -6 route add vrf v$ul31 2001:db8:40::1/128 \

	   nexthop via 2001:db8:81::1 \

	   nexthop via 2001:db8:82::1



	tc qdisc add dev $ul32 clsact

	tc filter add dev $ul32 ingress pref 111 prot 802.1Q \

	   flower vlan_id 111 action pass

	tc filter add dev $ul32 ingress pref 222 prot 802.1Q \

	   flower vlan_id 222 action pass

}



sw3_destroy()

{

	tc qdisc del dev $ul32 clsact



	ip -6 route del vrf v$ul31 2001:db8:40::1/128

	ip -6 route del vrf v$ul31 2001:db8:40::2/128



	vlan_destroy $ul32 222

	vlan_destroy $ul32 111

	__simple_if_fini $ul32

	simple_if_fini $ul31 2001:Db8:83::2/64

}



sw4_create()

{

	simple_if_init $ol4 192.0.4.1/24

	__simple_if_init $ul4 v$ol4 2001:db8:83::1/64



	tunnel_create g2 ip6gre 2001:db8:40::2 2001:db8:40::1 tos inherit dev v$ol4

	__simple_if_init g2 v$ol4 2001:db8:40::2/128

	ip -6 route add vrf v$ol4 2001:db8:40::1/128 via 2001:db8:83::2



	ip route add vrf v$ol4 192.0.3.0/24 nexthop dev g2

}



sw4_destroy()

{

	ip route del vrf v$ol4 192.0.3.0/24



	ip -6 route del vrf v$ol4 2001:db8:40::1/128

	__simple_if_fini g2 2001:db8:40::2/128

	tunnel_destroy g2



	__simple_if_fini $ul4 2001:db8:83::1/64

	simple_if_fini $ol4 192.0.4.1/24

}



h2_create()

{

	simple_if_init $h2 192.0.4.2/24

	ip route add vrf v$h2 192.0.3.0/24 via 192.0.4.1

}



h2_destroy()

{

	ip route del vrf v$h2 192.0.3.0/24 via 192.0.4.1

	simple_if_fini $h2 192.0.4.2/24

}



setup_prepare()

{

	h1=${NETIFS[p1]}



	ol1=${NETIFS[p2]}

	ul1=${NETIFS[p3]}



	ul21=${NETIFS[p4]}

	ul22=${NETIFS[p5]}



	ul32=${NETIFS[p6]}

	ul31=${NETIFS[p7]}



	ul4=${NETIFS[p8]}

	ol4=${NETIFS[p9]}



	h2=${NETIFS[p10]}



	vrf_prepare

	h1_create

	sw1_create

	sw2_create

	sw3_create

	sw4_create

	h2_create



	forwarding_enable

}



cleanup()

{

	pre_cleanup



	forwarding_restore



	h2_destroy

	sw4_destroy

	sw3_destroy

	sw2_destroy

	sw1_destroy

	h1_destroy

	vrf_cleanup

}



multipath4_test()

{

	local what=$1; shift

	local weight1=$1; shift

	local weight2=$1; shift



	sysctl_set net.ipv6.fib_multipath_hash_policy 2

	ip route replace vrf v$ul21 2001:db8:40::2/128 \

	   nexthop via 2001:db8:81::2 weight $weight1 \

	   nexthop via 2001:db8:82::2 weight $weight2



	local t0_111=$(tc_rule_stats_get $ul32 111 ingress)

	local t0_222=$(tc_rule_stats_get $ul32 222 ingress)



	ip vrf exec v$h1 \

	   $MZ $h1 -q -p 64 -A "192.0.3.2-192.0.3.62" -B "192.0.4.2-192.0.4.62" \

	       -d 1msec -c 50 -t udp "sp=1024,dp=1024"

	sleep 1



	local t1_111=$(tc_rule_stats_get $ul32 111 ingress)

	local t1_222=$(tc_rule_stats_get $ul32 222 ingress)



	local d111=$((t1_111 - t0_111))

	local d222=$((t1_222 - t0_222))

	multipath_eval "$what" $weight1 $weight2 $d111 $d222



	ip route replace vrf v$ul21 2001:db8:40::2/128 \

	   nexthop via 2001:db8:81::2 \

	   nexthop via 2001:db8:82::2

	sysctl_restore net.ipv6.fib_multipath_hash_policy

}



ping_ipv4()

{

	ping_test $h1 192.0.4.2

}



multipath_ipv4()

{

	log_info "Running IPv4 over GRE over IPv6 multipath tests"

	multipath4_test "ECMP" 1 1

	multipath4_test "Weighted MP 2:1" 2 1

	multipath4_test "Weighted MP 11:45" 11 45

}



trap cleanup EXIT



setup_prepare

setup_wait

tests_run



exit $EXIT_STATUS

tools/testing/selftests/net/forwarding/ip6gre_inner_v6_multipath.sh

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