| # SPDX-License-Identifier: GPL-2.0 |
| #!/bin/bash |
| |
| # Handles creation and destruction of IP-in-IP or GRE tunnels over the given |
| # topology. Supports both flat and hierarchical models. |
| # |
| # Flat Model: |
| # Overlay and underlay share the same VRF. |
| # SW1 uses default VRF so tunnel has no bound dev. |
| # SW2 uses non-default VRF tunnel has a bound dev. |
| # +--------------------------------+ |
| # | H1 | |
| # | $h1 + | |
| # | 198.51.100.1/24 | | |
| # | 2001:db8:1::1/64 | | |
| # +-------------------------|------+ |
| # | |
| # +-------------------------|-------------------+ |
| # | SW1 | | |
| # | $ol1 + | |
| # | 198.51.100.2/24 | |
| # | 2001:db8:1::2/64 | |
| # | | |
| # | + g1a (ip6gre) | |
| # | loc=2001:db8:3::1 | |
| # | rem=2001:db8:3::2 --. | |
| # | tos=inherit | | |
| # | . | |
| # | .--------------------- | |
| # | | | |
| # | v | |
| # | + $ul1.111 (vlan) | |
| # | | 2001:db8:10::1/64 | |
| # | \ | |
| # | \____________ | |
| # | | | |
| # | VRF default + $ul1 | |
| # +---------------------|-----------------------+ |
| # | |
| # +---------------------|-----------------------+ |
| # | SW2 | | |
| # | $ul2 + | |
| # | ___________| | |
| # | / | |
| # | / | |
| # | + $ul2.111 (vlan) | |
| # | ^ 2001:db8:10::2/64 | |
| # | | | |
| # | | | |
| # | '----------------------. | |
| # | + g2a (ip6gre) | | |
| # | loc=2001:db8:3::2 | | |
| # | rem=2001:db8:3::1 --' | |
| # | tos=inherit | |
| # | | |
| # | + $ol2 | |
| # | | 203.0.113.2/24 | |
| # | VRF v$ol2 | 2001:db8:2::2/64 | |
| # +---------------------|-----------------------+ |
| # +---------------------|----------+ |
| # | H2 | | |
| # | $h2 + | |
| # | 203.0.113.1/24 | |
| # | 2001:db8:2::1/64 | |
| # +--------------------------------+ |
| # |
| # Hierarchical model: |
| # The tunnel is bound to a device in a different VRF |
| # |
| # +--------------------------------+ |
| # | H1 | |
| # | $h1 + | |
| # | 198.51.100.1/24 | | |
| # | 2001:db8:1::1/64 | | |
| # +-------------------------|------+ |
| # | |
| # +-------------------------|-------------------+ |
| # | SW1 | | |
| # | +-----------------------|-----------------+ | |
| # | | $ol1 + | | |
| # | | 198.51.100.2/24 | | |
| # | | 2001:db8:1::2/64 | | |
| # | | | | |
| # | | + g1a (ip6gre) | | |
| # | | loc=2001:db8:3::1 | | |
| # | | rem=2001:db8:3::2 | | |
| # | | tos=inherit | | |
| # | | ^ | | |
| # | | VRF v$ol1 | | | |
| # | +--------------------|--------------------+ | |
| # | | | |
| # | +--------------------|--------------------+ | |
| # | | VRF v$ul1 | | | |
| # | | | | | |
| # | | v | | |
| # | | dummy1 + | | |
| # | | 2001:db8:3::1/64 | | |
| # | | .-----------' | | |
| # | | | | | |
| # | | v | | |
| # | | + $ul1.111 (vlan) | | |
| # | | | 2001:db8:10::1/64 | | |
| # | | \ | | |
| # | | \__________ | | |
| # | | | | | |
| # | | + $ul1 | | |
| # | +---------------------|-------------------+ | |
| # +-----------------------|---------------------+ |
| # | |
| # +-----------------------|---------------------+ |
| # | SW2 | | |
| # | +---------------------|-------------------+ | |
| # | | + $ul2 | | |
| # | | _____| | | |
| # | | / | | |
| # | | / | | |
| # | | | $ul2.111 (vlan) | | |
| # | | + 2001:db8:10::2/64 | | |
| # | | ^ | | |
| # | | | | | |
| # | | '------. | | |
| # | | dummy2 + | | |
| # | | 2001:db8:3::2/64 | | |
| # | | ^ | | |
| # | | | | | |
| # | | | | | |
| # | | VRF v$ul2 | | | |
| # | +---------------------|-------------------+ | |
| # | | | |
| # | +---------------------|-------------------+ | |
| # | | VRF v$ol2 | | | |
| # | | | | | |
| # | | v | | |
| # | | g2a (ip6gre) + | | |
| # | | loc=2001:db8:3::2 | | |
| # | | rem=2001:db8:3::1 | | |
| # | | tos=inherit | | |
| # | | | | |
| # | | $ol2 + | | |
| # | | 203.0.113.2/24 | | | |
| # | | 2001:db8:2::2/64 | | | |
| # | +---------------------|-------------------+ | |
| # +-----------------------|---------------------+ |
| # | |
| # +-----------------------|--------+ |
| # | H2 | | |
| # | $h2 + | |
| # | 203.0.113.1/24 | |
| # | 2001:db8:2::1/64 | |
| # +--------------------------------+ |
| |
| source lib.sh |
| source tc_common.sh |
| |
| h1_create() |
| { |
| simple_if_init $h1 198.51.100.1/24 2001:db8:1::1/64 |
| ip route add vrf v$h1 203.0.113.0/24 via 198.51.100.2 |
| ip -6 route add vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2 |
| } |
| |
| h1_destroy() |
| { |
| ip -6 route del vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2 |
| ip route del vrf v$h1 203.0.113.0/24 via 198.51.100.2 |
| simple_if_fini $h1 198.51.100.1/24 2001:db8:1::1/64 |
| } |
| |
| h2_create() |
| { |
| simple_if_init $h2 203.0.113.1/24 2001:db8:2::1/64 |
| ip route add vrf v$h2 198.51.100.0/24 via 203.0.113.2 |
| ip -6 route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::2 |
| } |
| |
| h2_destroy() |
| { |
| ip -6 route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::2 |
| ip route del vrf v$h2 198.51.100.0/24 via 203.0.113.2 |
| simple_if_fini $h2 203.0.113.1/24 2001:db8:2::1/64 |
| } |
| |
| sw1_flat_create() |
| { |
| local ol1=$1; shift |
| local ul1=$1; shift |
| |
| ip link set dev $ol1 up |
| __addr_add_del $ol1 add 198.51.100.2/24 2001:db8:1::2/64 |
| |
| ip link set dev $ul1 up |
| vlan_create $ul1 111 "" 2001:db8:10::1/64 |
| |
| tunnel_create g1a ip6gre 2001:db8:3::1 2001:db8:3::2 tos inherit \ |
| ttl inherit "$@" |
| ip link set dev g1a up |
| __addr_add_del g1a add "2001:db8:3::1/128" |
| |
| ip -6 route add 2001:db8:3::2/128 via 2001:db8:10::2 |
| ip route add 203.0.113.0/24 dev g1a |
| ip -6 route add 2001:db8:2::/64 dev g1a |
| } |
| |
| sw1_flat_destroy() |
| { |
| local ol1=$1; shift |
| local ul1=$1; shift |
| |
| ip -6 route del 2001:db8:2::/64 |
| ip route del 203.0.113.0/24 |
| ip -6 route del 2001:db8:3::2/128 via 2001:db8:10::2 |
| |
| __simple_if_fini g1a 2001:db8:3::1/128 |
| tunnel_destroy g1a |
| |
| vlan_destroy $ul1 111 |
| __simple_if_fini $ul1 |
| __simple_if_fini $ol1 198.51.100.2/24 2001:db8:1::2/64 |
| } |
| |
| sw2_flat_create() |
| { |
| local ol2=$1; shift |
| local ul2=$1; shift |
| |
| simple_if_init $ol2 203.0.113.2/24 2001:db8:2::2/64 |
| __simple_if_init $ul2 v$ol2 |
| vlan_create $ul2 111 v$ol2 2001:db8:10::2/64 |
| |
| tunnel_create g2a ip6gre 2001:db8:3::2 2001:db8:3::1 tos inherit \ |
| ttl inherit dev v$ol2 "$@" |
| __simple_if_init g2a v$ol2 2001:db8:3::2/128 |
| |
| # Replace neighbor to avoid 1 dropped packet due to "unresolved neigh" |
| ip neigh replace dev $ol2 203.0.113.1 lladdr $(mac_get $h2) |
| ip -6 neigh replace dev $ol2 2001:db8:2::1 lladdr $(mac_get $h2) |
| |
| ip -6 route add vrf v$ol2 2001:db8:3::1/128 via 2001:db8:10::1 |
| ip route add vrf v$ol2 198.51.100.0/24 dev g2a |
| ip -6 route add vrf v$ol2 2001:db8:1::/64 dev g2a |
| } |
| |
| sw2_flat_destroy() |
| { |
| local ol2=$1; shift |
| local ul2=$1; shift |
| |
| ip -6 route del vrf v$ol2 2001:db8:2::/64 |
| ip route del vrf v$ol2 198.51.100.0/24 |
| ip -6 route del vrf v$ol2 2001:db8:3::1/128 via 2001:db8:10::1 |
| |
| __simple_if_fini g2a 2001:db8:3::2/128 |
| tunnel_destroy g2a |
| |
| vlan_destroy $ul2 111 |
| __simple_if_fini $ul2 |
| simple_if_fini $ol2 203.0.113.2/24 2001:db8:2::2/64 |
| } |
| |
| sw1_hierarchical_create() |
| { |
| local ol1=$1; shift |
| local ul1=$1; shift |
| |
| simple_if_init $ol1 198.51.100.2/24 2001:db8:1::2/64 |
| simple_if_init $ul1 |
| ip link add name dummy1 type dummy |
| __simple_if_init dummy1 v$ul1 2001:db8:3::1/64 |
| |
| vlan_create $ul1 111 v$ul1 2001:db8:10::1/64 |
| tunnel_create g1a ip6gre 2001:db8:3::1 2001:db8:3::2 tos inherit \ |
| ttl inherit dev dummy1 "$@" |
| ip link set dev g1a master v$ol1 |
| |
| ip -6 route add vrf v$ul1 2001:db8:3::2/128 via 2001:db8:10::2 |
| ip route add vrf v$ol1 203.0.113.0/24 dev g1a |
| ip -6 route add vrf v$ol1 2001:db8:2::/64 dev g1a |
| } |
| |
| sw1_hierarchical_destroy() |
| { |
| local ol1=$1; shift |
| local ul1=$1; shift |
| |
| ip -6 route del vrf v$ol1 2001:db8:2::/64 |
| ip route del vrf v$ol1 203.0.113.0/24 |
| ip -6 route del vrf v$ul1 2001:db8:3::2/128 |
| |
| tunnel_destroy g1a |
| vlan_destroy $ul1 111 |
| |
| __simple_if_fini dummy1 2001:db8:3::1/64 |
| ip link del dev dummy1 |
| |
| simple_if_fini $ul1 |
| simple_if_fini $ol1 198.51.100.2/24 2001:db8:1::2/64 |
| } |
| |
| sw2_hierarchical_create() |
| { |
| local ol2=$1; shift |
| local ul2=$1; shift |
| |
| simple_if_init $ol2 203.0.113.2/24 2001:db8:2::2/64 |
| simple_if_init $ul2 |
| |
| ip link add name dummy2 type dummy |
| __simple_if_init dummy2 v$ul2 2001:db8:3::2/64 |
| |
| vlan_create $ul2 111 v$ul2 2001:db8:10::2/64 |
| tunnel_create g2a ip6gre 2001:db8:3::2 2001:db8:3::1 tos inherit \ |
| ttl inherit dev dummy2 "$@" |
| ip link set dev g2a master v$ol2 |
| |
| # Replace neighbor to avoid 1 dropped packet due to "unresolved neigh" |
| ip neigh replace dev $ol2 203.0.113.1 lladdr $(mac_get $h2) |
| ip -6 neigh replace dev $ol2 2001:db8:2::1 lladdr $(mac_get $h2) |
| |
| ip -6 route add vrf v$ul2 2001:db8:3::1/128 via 2001:db8:10::1 |
| ip route add vrf v$ol2 198.51.100.0/24 dev g2a |
| ip -6 route add vrf v$ol2 2001:db8:1::/64 dev g2a |
| } |
| |
| sw2_hierarchical_destroy() |
| { |
| local ol2=$1; shift |
| local ul2=$1; shift |
| |
| ip -6 route del vrf v$ol2 2001:db8:2::/64 |
| ip route del vrf v$ol2 198.51.100.0/24 |
| ip -6 route del vrf v$ul2 2001:db8:3::1/128 |
| |
| tunnel_destroy g2a |
| vlan_destroy $ul2 111 |
| |
| __simple_if_fini dummy2 2001:db8:3::2/64 |
| ip link del dev dummy2 |
| |
| simple_if_fini $ul2 |
| simple_if_fini $ol2 203.0.113.2/24 2001:db8:2::2/64 |
| } |
| |
| test_traffic_ip4ip6() |
| { |
| RET=0 |
| |
| h1mac=$(mac_get $h1) |
| ol1mac=$(mac_get $ol1) |
| |
| tc qdisc add dev $ul1 clsact |
| tc filter add dev $ul1 egress proto all pref 1 handle 101 \ |
| flower $TC_FLAG action pass |
| |
| tc qdisc add dev $ol2 clsact |
| tc filter add dev $ol2 egress protocol ipv4 pref 1 handle 101 \ |
| flower $TC_FLAG dst_ip 203.0.113.1 action pass |
| |
| $MZ $h1 -c 1000 -p 64 -a $h1mac -b $ol1mac -A 198.51.100.1 \ |
| -B 203.0.113.1 -t ip -q -d 1msec |
| |
| # Check ports after encap and after decap. |
| tc_check_at_least_x_packets "dev $ul1 egress" 101 1000 |
| check_err $? "Packets did not go through $ul1, tc_flag = $TC_FLAG" |
| |
| tc_check_at_least_x_packets "dev $ol2 egress" 101 1000 |
| check_err $? "Packets did not go through $ol2, tc_flag = $TC_FLAG" |
| |
| log_test "$@" |
| |
| tc filter del dev $ol2 egress protocol ipv4 pref 1 handle 101 flower |
| tc qdisc del dev $ol2 clsact |
| tc filter del dev $ul1 egress proto all pref 1 handle 101 flower |
| tc qdisc del dev $ul1 clsact |
| } |
| |
| test_traffic_ip6ip6() |
| { |
| RET=0 |
| |
| h1mac=$(mac_get $h1) |
| ol1mac=$(mac_get $ol1) |
| |
| tc qdisc add dev $ul1 clsact |
| tc filter add dev $ul1 egress proto all pref 1 handle 101 \ |
| flower $TC_FLAG action pass |
| |
| tc qdisc add dev $ol2 clsact |
| tc filter add dev $ol2 egress protocol ipv6 pref 1 handle 101 \ |
| flower $TC_FLAG dst_ip 2001:db8:2::1 action pass |
| |
| $MZ -6 $h1 -c 1000 -p 64 -a $h1mac -b $ol1mac -A 2001:db8:1::1 \ |
| -B 2001:db8:2::1 -t ip -q -d 1msec |
| |
| # Check ports after encap and after decap. |
| tc_check_at_least_x_packets "dev $ul1 egress" 101 1000 |
| check_err $? "Packets did not go through $ul1, tc_flag = $TC_FLAG" |
| |
| tc_check_at_least_x_packets "dev $ol2 egress" 101 1000 |
| check_err $? "Packets did not go through $ol2, tc_flag = $TC_FLAG" |
| |
| log_test "$@" |
| |
| tc filter del dev $ol2 egress protocol ipv6 pref 1 handle 101 flower |
| tc qdisc del dev $ol2 clsact |
| tc filter del dev $ul1 egress proto all pref 1 handle 101 flower |
| tc qdisc del dev $ul1 clsact |
| } |
| |
| topo_mtu_change() |
| { |
| local mtu=$1 |
| |
| ip link set mtu $mtu dev $h1 |
| ip link set mtu $mtu dev $ol1 |
| ip link set mtu $mtu dev g1a |
| ip link set mtu $mtu dev $ul1 |
| ip link set mtu $mtu dev $ul1.111 |
| ip link set mtu $mtu dev $h2 |
| ip link set mtu $mtu dev $ol2 |
| ip link set mtu $mtu dev g2a |
| ip link set mtu $mtu dev $ul2 |
| ip link set mtu $mtu dev $ul2.111 |
| } |
| |
| test_mtu_change() |
| { |
| RET=0 |
| |
| ping6_do $h1 2001:db8:2::1 "-s 1800 -w 3" |
| check_fail $? "ping GRE IPv6 should not pass with packet size 1800" |
| |
| RET=0 |
| |
| topo_mtu_change 2000 |
| ping6_do $h1 2001:db8:2::1 "-s 1800 -w 3" |
| check_err $? |
| log_test "ping GRE IPv6, packet size 1800 after MTU change" |
| } |
