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