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257 lines
6.3 KiB
257 lines
6.3 KiB
#!/bin/bash |
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# SPDX-License-Identifier: GPL-2.0 |
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# Test traffic distribution when a wECMP route forwards traffic to two GRE |
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# tunnels. |
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# |
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# +-------------------------+ |
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# | H1 | |
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# | $h1 + | |
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# | 192.0.2.1/28 | | |
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# +-------------------|-----+ |
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# | |
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# +-------------------|------------------------+ |
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# | SW1 | | |
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# | $ol1 + | |
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# | 192.0.2.2/28 | |
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# | | |
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# | + g1a (gre) + g1b (gre) | |
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# | loc=192.0.2.65 loc=192.0.2.81 | |
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# | rem=192.0.2.66 --. rem=192.0.2.82 --. | |
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# | tos=inherit | tos=inherit | | |
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# | .------------------' | | |
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# | | .------------------' | |
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# | v v | |
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# | + $ul1.111 (vlan) + $ul1.222 (vlan) | |
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# | | 192.0.2.129/28 | 192.0.2.145/28 | |
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# | \ / | |
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# | \________________/ | |
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# | | | |
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# | + $ul1 | |
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# +------------|-------------------------------+ |
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# | |
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# +------------|-------------------------------+ |
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# | SW2 + $ul2 | |
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# | _______|________ | |
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# | / \ | |
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# | / \ | |
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# | + $ul2.111 (vlan) + $ul2.222 (vlan) | |
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# | ^ 192.0.2.130/28 ^ 192.0.2.146/28 | |
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# | | | | |
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# | | '------------------. | |
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# | '------------------. | | |
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# | + g2a (gre) | + g2b (gre) | | |
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# | loc=192.0.2.66 | loc=192.0.2.82 | | |
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# | rem=192.0.2.65 --' rem=192.0.2.81 --' | |
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# | tos=inherit tos=inherit | |
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# | | |
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# | $ol2 + | |
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# | 192.0.2.17/28 | | |
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# +-------------------|------------------------+ |
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# | |
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# +-------------------|-----+ |
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# | H2 | | |
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# | $h2 + | |
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# | 192.0.2.18/28 | |
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# +-------------------------+ |
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ALL_TESTS=" |
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ping_ipv4 |
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multipath_ipv4 |
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" |
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NUM_NETIFS=6 |
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source lib.sh |
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h1_create() |
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{ |
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simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64 |
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ip route add vrf v$h1 192.0.2.16/28 via 192.0.2.2 |
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} |
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h1_destroy() |
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{ |
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ip route del vrf v$h1 192.0.2.16/28 via 192.0.2.2 |
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simple_if_fini $h1 192.0.2.1/28 |
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} |
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sw1_create() |
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{ |
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simple_if_init $ol1 192.0.2.2/28 |
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__simple_if_init $ul1 v$ol1 |
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vlan_create $ul1 111 v$ol1 192.0.2.129/28 |
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vlan_create $ul1 222 v$ol1 192.0.2.145/28 |
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tunnel_create g1a gre 192.0.2.65 192.0.2.66 tos inherit dev v$ol1 |
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__simple_if_init g1a v$ol1 192.0.2.65/32 |
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ip route add vrf v$ol1 192.0.2.66/32 via 192.0.2.130 |
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tunnel_create g1b gre 192.0.2.81 192.0.2.82 tos inherit dev v$ol1 |
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__simple_if_init g1b v$ol1 192.0.2.81/32 |
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ip route add vrf v$ol1 192.0.2.82/32 via 192.0.2.146 |
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ip route add vrf v$ol1 192.0.2.16/28 \ |
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nexthop dev g1a \ |
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nexthop dev g1b |
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} |
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sw1_destroy() |
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{ |
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ip route del vrf v$ol1 192.0.2.16/28 |
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ip route del vrf v$ol1 192.0.2.82/32 via 192.0.2.146 |
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__simple_if_fini g1b 192.0.2.81/32 |
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tunnel_destroy g1b |
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ip route del vrf v$ol1 192.0.2.66/32 via 192.0.2.130 |
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__simple_if_fini g1a 192.0.2.65/32 |
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tunnel_destroy g1a |
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vlan_destroy $ul1 222 |
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vlan_destroy $ul1 111 |
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__simple_if_fini $ul1 |
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simple_if_fini $ol1 192.0.2.2/28 |
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} |
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sw2_create() |
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{ |
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simple_if_init $ol2 192.0.2.17/28 |
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__simple_if_init $ul2 v$ol2 |
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vlan_create $ul2 111 v$ol2 192.0.2.130/28 |
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vlan_create $ul2 222 v$ol2 192.0.2.146/28 |
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tunnel_create g2a gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol2 |
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__simple_if_init g2a v$ol2 192.0.2.66/32 |
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ip route add vrf v$ol2 192.0.2.65/32 via 192.0.2.129 |
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tunnel_create g2b gre 192.0.2.82 192.0.2.81 tos inherit dev v$ol2 |
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__simple_if_init g2b v$ol2 192.0.2.82/32 |
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ip route add vrf v$ol2 192.0.2.81/32 via 192.0.2.145 |
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ip route add vrf v$ol2 192.0.2.0/28 \ |
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nexthop dev g2a \ |
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nexthop dev g2b |
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tc qdisc add dev $ul2 clsact |
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tc filter add dev $ul2 ingress pref 111 prot 802.1Q \ |
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flower vlan_id 111 action pass |
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tc filter add dev $ul2 ingress pref 222 prot 802.1Q \ |
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flower vlan_id 222 action pass |
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} |
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sw2_destroy() |
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{ |
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tc qdisc del dev $ul2 clsact |
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ip route del vrf v$ol2 192.0.2.0/28 |
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ip route del vrf v$ol2 192.0.2.81/32 via 192.0.2.145 |
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__simple_if_fini g2b 192.0.2.82/32 |
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tunnel_destroy g2b |
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ip route del vrf v$ol2 192.0.2.65/32 via 192.0.2.129 |
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__simple_if_fini g2a 192.0.2.66/32 |
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tunnel_destroy g2a |
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vlan_destroy $ul2 222 |
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vlan_destroy $ul2 111 |
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__simple_if_fini $ul2 |
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simple_if_fini $ol2 192.0.2.17/28 |
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} |
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h2_create() |
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{ |
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simple_if_init $h2 192.0.2.18/28 |
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ip route add vrf v$h2 192.0.2.0/28 via 192.0.2.17 |
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} |
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h2_destroy() |
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{ |
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ip route del vrf v$h2 192.0.2.0/28 via 192.0.2.17 |
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simple_if_fini $h2 192.0.2.18/28 |
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} |
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setup_prepare() |
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{ |
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h1=${NETIFS[p1]} |
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ol1=${NETIFS[p2]} |
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ul1=${NETIFS[p3]} |
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ul2=${NETIFS[p4]} |
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ol2=${NETIFS[p5]} |
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h2=${NETIFS[p6]} |
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vrf_prepare |
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h1_create |
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sw1_create |
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sw2_create |
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h2_create |
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forwarding_enable |
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} |
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cleanup() |
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{ |
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pre_cleanup |
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forwarding_restore |
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h2_destroy |
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sw2_destroy |
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sw1_destroy |
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h1_destroy |
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vrf_cleanup |
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} |
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multipath4_test() |
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{ |
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local what=$1; shift |
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local weight1=$1; shift |
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local weight2=$1; shift |
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sysctl_set net.ipv4.fib_multipath_hash_policy 1 |
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ip route replace vrf v$ol1 192.0.2.16/28 \ |
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nexthop dev g1a weight $weight1 \ |
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nexthop dev g1b weight $weight2 |
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local t0_111=$(tc_rule_stats_get $ul2 111 ingress) |
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local t0_222=$(tc_rule_stats_get $ul2 222 ingress) |
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ip vrf exec v$h1 \ |
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$MZ $h1 -q -p 64 -A 192.0.2.1 -B 192.0.2.18 \ |
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-d 1msec -t udp "sp=1024,dp=0-32768" |
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local t1_111=$(tc_rule_stats_get $ul2 111 ingress) |
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local t1_222=$(tc_rule_stats_get $ul2 222 ingress) |
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local d111=$((t1_111 - t0_111)) |
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local d222=$((t1_222 - t0_222)) |
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multipath_eval "$what" $weight1 $weight2 $d111 $d222 |
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ip route replace vrf v$ol1 192.0.2.16/28 \ |
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nexthop dev g1a \ |
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nexthop dev g1b |
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sysctl_restore net.ipv4.fib_multipath_hash_policy |
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} |
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ping_ipv4() |
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{ |
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ping_test $h1 192.0.2.18 |
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} |
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multipath_ipv4() |
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{ |
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log_info "Running IPv4 multipath tests" |
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multipath4_test "ECMP" 1 1 |
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multipath4_test "Weighted MP 2:1" 2 1 |
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multipath4_test "Weighted MP 11:45" 11 45 |
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} |
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trap cleanup EXIT |
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setup_prepare |
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setup_wait |
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tests_run |
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exit $EXIT_STATUS
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