| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| # 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 + | |
| # | 192.0.2.1/28 | | |
| # +-------------------|-----+ |
| # | |
| # +-------------------|-----+ |
| # | SW1 | | |
| # | $ol1 + | |
| # | 192.0.2.2/28 | |
| # | | |
| # | + g1a (gre) | |
| # | loc=192.0.2.65 | |
| # | rem=192.0.2.66 --. | |
| # | tos=inherit | | |
| # | .------------------' | |
| # | | | |
| # | v | |
| # | + $ul1.111 (vlan) | |
| # | | 192.0.2.129/28 | |
| # | \ | |
| # | \_______ | |
| # | | | |
| # |VRF default + $ul1 | |
| # +------------|------------+ |
| # | |
| # +------------|------------+ |
| # | SW2 + $ul2 | |
| # | _______| | |
| # | / | |
| # | / | |
| # | + $ul2.111 (vlan) | |
| # | ^ 192.0.2.130/28 | |
| # | | | |
| # | | | |
| # | '------------------. | |
| # | + g2a (gre) | | |
| # | loc=192.0.2.66 | | |
| # | rem=192.0.2.65 --' | |
| # | tos=inherit | |
| # | | |
| # | $ol2 + | |
| # | 192.0.2.17/28 | | |
| # | VRF v$ol2 | | |
| # +-------------------|-----+ |
| # | |
| # +-------------------|-----+ |
| # | H2 | | |
| # | $h2 + | |
| # | 192.0.2.18/28 | |
| # +-------------------------+ |
| # |
| # Hierarchical model: |
| # The tunnel is bound to a device in a different VRF |
| # |
| # +---------------------------+ |
| # | H1 | |
| # | $h1 + | |
| # | 192.0.2.1/28 | | |
| # +-------------------|-------+ |
| # | |
| # +-------------------|-------+ |
| # | SW1 | | |
| # | +-----------------|-----+ | |
| # | | $ol1 + | | |
| # | | 192.0.2.2/28 | | |
| # | | | | |
| # | | + g1a (gre) | | |
| # | | rem=192.0.2.66 | | |
| # | | tos=inherit | | |
| # | | loc=192.0.2.65 | | |
| # | | ^ | | |
| # | | VRF v$ol1 | | | |
| # | +-----------|-----------+ | |
| # | | | |
| # | +-----------|-----------+ | |
| # | | VRF v$ul1 | | | |
| # | | | | | |
| # | | | | | |
| # | | v | | |
| # | | dummy1 + | | |
| # | | 192.0.2.65 | | |
| # | | .-------' | | |
| # | | | | | |
| # | | v | | |
| # | | + $ul1.111 (vlan) | | |
| # | | | 192.0.2.129/28 | | |
| # | | \ | | |
| # | | \_____ | | |
| # | | | | | |
| # | | + $ul1 | | |
| # | +----------|------------+ | |
| # +------------|--------------+ |
| # | |
| # +------------|--------------+ |
| # | SW2 | | |
| # | +----------|------------+ | |
| # | | + $ul2 | | |
| # | | _____| | | |
| # | | / | | |
| # | | / | | |
| # | | | $ul2.111 (vlan) | | |
| # | | + 192.0.2.130/28 | | |
| # | | ^ | | |
| # | | | | | |
| # | | '-------. | | |
| # | | dummy2 + | | |
| # | | 192.0.2.66 | | |
| # | | ^ | | |
| # | | | | | |
| # | | | | | |
| # | | VRF v$ul2 | | | |
| # | +-----------|-----------+ | |
| # | | | |
| # | +-----------|-----------+ | |
| # | | VRF v$ol2 | | | |
| # | | | | | |
| # | | v | | |
| # | | g2a (gre)+ | | |
| # | | loc=192.0.2.66 | | |
| # | | rem=192.0.2.65 | | |
| # | | tos=inherit | | |
| # | | | | |
| # | | $ol2 + | | |
| # | | 192.0.2.17/28 | | | |
| # | +-----------------|-----+ | |
| # +-------------------|-------+ |
| # | |
| # +-------------------|-------+ |
| # | H2 | | |
| # | $h2 + | |
| # | 192.0.2.18/28 | |
| # +---------------------------+ |
| source lib.sh |
| |
| h1_create() |
| { |
| simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64 |
| ip route add vrf v$h1 192.0.2.16/28 via 192.0.2.2 |
| } |
| |
| h1_destroy() |
| { |
| ip route del vrf v$h1 192.0.2.16/28 via 192.0.2.2 |
| simple_if_fini $h1 192.0.2.1/28 |
| } |
| |
| h2_create() |
| { |
| simple_if_init $h2 192.0.2.18/28 |
| ip route add vrf v$h2 192.0.2.0/28 via 192.0.2.17 |
| } |
| |
| h2_destroy() |
| { |
| ip route del vrf v$h2 192.0.2.0/28 via 192.0.2.17 |
| simple_if_fini $h2 192.0.2.18/28 |
| } |
| |
| sw1_flat_create() |
| { |
| local type=$1; shift |
| local ol1=$1; shift |
| local ul1=$1; shift |
| |
| ip link set dev $ol1 up |
| __addr_add_del $ol1 add "192.0.2.2/28" |
| |
| ip link set dev $ul1 up |
| vlan_create $ul1 111 "" 192.0.2.129/28 |
| |
| tunnel_create g1a $type 192.0.2.65 192.0.2.66 tos inherit "$@" |
| ip link set dev g1a up |
| __addr_add_del g1a add "192.0.2.65/32" |
| |
| ip route add 192.0.2.66/32 via 192.0.2.130 |
| |
| ip route add 192.0.2.16/28 nexthop dev g1a |
| } |
| |
| sw1_flat_destroy() |
| { |
| local ol1=$1; shift |
| local ul1=$1; shift |
| |
| ip route del 192.0.2.16/28 |
| |
| ip route del 192.0.2.66/32 via 192.0.2.130 |
| __simple_if_fini g1a 192.0.2.65/32 |
| tunnel_destroy g1a |
| |
| vlan_destroy $ul1 111 |
| __simple_if_fini $ul1 |
| __simple_if_fini $ol1 192.0.2.2/28 |
| } |
| |
| sw2_flat_create() |
| { |
| local type=$1; shift |
| local ol2=$1; shift |
| local ul2=$1; shift |
| |
| simple_if_init $ol2 192.0.2.17/28 |
| __simple_if_init $ul2 v$ol2 |
| vlan_create $ul2 111 v$ol2 192.0.2.130/28 |
| |
| tunnel_create g2a $type 192.0.2.66 192.0.2.65 tos inherit dev v$ol2 \ |
| "$@" |
| __simple_if_init g2a v$ol2 192.0.2.66/32 |
| |
| ip route add vrf v$ol2 192.0.2.65/32 via 192.0.2.129 |
| ip route add vrf v$ol2 192.0.2.0/28 nexthop dev g2a |
| } |
| |
| sw2_flat_destroy() |
| { |
| local ol2=$1; shift |
| local ul2=$1; shift |
| |
| ip route del vrf v$ol2 192.0.2.0/28 |
| |
| ip route del vrf v$ol2 192.0.2.65/32 via 192.0.2.129 |
| __simple_if_fini g2a 192.0.2.66/32 |
| tunnel_destroy g2a |
| |
| vlan_destroy $ul2 111 |
| __simple_if_fini $ul2 |
| simple_if_fini $ol2 192.0.2.17/28 |
| } |
| |
| sw1_hierarchical_create() |
| { |
| local type=$1; shift |
| local ol1=$1; shift |
| local ul1=$1; shift |
| |
| simple_if_init $ol1 192.0.2.2/28 |
| simple_if_init $ul1 |
| ip link add name dummy1 type dummy |
| __simple_if_init dummy1 v$ul1 192.0.2.65/32 |
| |
| vlan_create $ul1 111 v$ul1 192.0.2.129/28 |
| tunnel_create g1a $type 192.0.2.65 192.0.2.66 tos inherit dev dummy1 \ |
| "$@" |
| ip link set dev g1a master v$ol1 |
| |
| ip route add vrf v$ul1 192.0.2.66/32 via 192.0.2.130 |
| ip route add vrf v$ol1 192.0.2.16/28 nexthop dev g1a |
| } |
| |
| sw1_hierarchical_destroy() |
| { |
| local ol1=$1; shift |
| local ul1=$1; shift |
| |
| ip route del vrf v$ol1 192.0.2.16/28 |
| ip route del vrf v$ul1 192.0.2.66/32 |
| |
| tunnel_destroy g1a |
| vlan_destroy $ul1 111 |
| |
| __simple_if_fini dummy1 192.0.2.65/32 |
| ip link del dev dummy1 |
| |
| simple_if_fini $ul1 |
| simple_if_fini $ol1 192.0.2.2/28 |
| } |
| |
| sw2_hierarchical_create() |
| { |
| local type=$1; shift |
| local ol2=$1; shift |
| local ul2=$1; shift |
| |
| simple_if_init $ol2 192.0.2.17/28 |
| simple_if_init $ul2 |
| |
| ip link add name dummy2 type dummy |
| __simple_if_init dummy2 v$ul2 192.0.2.66/32 |
| |
| vlan_create $ul2 111 v$ul2 192.0.2.130/28 |
| tunnel_create g2a $type 192.0.2.66 192.0.2.65 tos inherit dev dummy2 \ |
| "$@" |
| ip link set dev g2a master v$ol2 |
| |
| ip route add vrf v$ul2 192.0.2.65/32 via 192.0.2.129 |
| ip route add vrf v$ol2 192.0.2.0/28 nexthop dev g2a |
| } |
| |
| sw2_hierarchical_destroy() |
| { |
| local ol2=$1; shift |
| local ul2=$1; shift |
| |
| ip route del vrf v$ol2 192.0.2.0/28 |
| ip route del vrf v$ul2 192.0.2.65/32 |
| |
| tunnel_destroy g2a |
| vlan_destroy $ul2 111 |
| |
| __simple_if_fini dummy2 192.0.2.66/32 |
| ip link del dev dummy2 |
| |
| simple_if_fini $ul2 |
| simple_if_fini $ol2 192.0.2.17/28 |
| } |
| |
| 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() |
| { |
| local encap=$1; shift |
| |
| RET=0 |
| |
| ping_do $h1 192.0.2.18 "-s 1800 -w 3" |
| check_fail $? "ping $encap should not pass with size 1800" |
| |
| RET=0 |
| |
| topo_mtu_change 2000 |
| ping_do $h1 192.0.2.18 "-s 1800 -w 3" |
| check_err $? |
| log_test "ping $encap packet size 1800 after MTU change" |
| } |
