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0001 #!/bin/bash
0002 # SPDX-License-Identifier: GPL-2.0
0003 
0004 # +--------------------+                     +----------------------+
0005 # | H1                 |                     |                   H2 |
0006 # |                    |                     |                      |
0007 # |          $h1.200 + |                     | + $h2.200            |
0008 # |     192.0.2.1/28 | |                     | | 192.0.2.18/28      |
0009 # | 2001:db8:1::1/64 | |                     | | 2001:db8:2::1/64   |
0010 # |                  | |                     | |                    |
0011 # |              $h1 + |                     | + $h2                |
0012 # |                  | |                     | |                    |
0013 # +------------------|-+                     +-|--------------------+
0014 #                    |                         |
0015 # +------------------|-------------------------|--------------------+
0016 # | SW               |                         |                    |
0017 # |                  |                         |                    |
0018 # |             $rp1 +                         + $rp2               |
0019 # |                  |                         |                    |
0020 # |         $rp1.200 +                         + $rp2.200           |
0021 # |     192.0.2.2/28                             192.0.2.17/28      |
0022 # | 2001:db8:1::2/64                             2001:db8:2::2/64   |
0023 # |                                                                 |
0024 # +-----------------------------------------------------------------+
0025 
0026 ALL_TESTS="
0027         ping_ipv4
0028         ping_ipv6
0029         test_stats_rx_ipv4
0030         test_stats_tx_ipv4
0031         test_stats_rx_ipv6
0032         test_stats_tx_ipv6
0033         respin_enablement
0034         test_stats_rx_ipv4
0035         test_stats_tx_ipv4
0036         test_stats_rx_ipv6
0037         test_stats_tx_ipv6
0038         reapply_config
0039         ping_ipv4
0040         ping_ipv6
0041         test_stats_rx_ipv4
0042         test_stats_tx_ipv4
0043         test_stats_rx_ipv6
0044         test_stats_tx_ipv6
0045         test_stats_report_rx
0046         test_stats_report_tx
0047         test_destroy_enabled
0048         test_double_enable
0049 "
0050 NUM_NETIFS=4
0051 source lib.sh
0052 
0053 h1_create()
0054 {
0055         simple_if_init $h1
0056         vlan_create $h1 200 v$h1 192.0.2.1/28 2001:db8:1::1/64
0057         ip route add 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2
0058         ip -6 route add 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::2
0059 }
0060 
0061 h1_destroy()
0062 {
0063         ip -6 route del 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::2
0064         ip route del 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2
0065         vlan_destroy $h1 200
0066         simple_if_fini $h1
0067 }
0068 
0069 h2_create()
0070 {
0071         simple_if_init $h2
0072         vlan_create $h2 200 v$h2 192.0.2.18/28 2001:db8:2::1/64
0073         ip route add 192.0.2.0/28 vrf v$h2 nexthop via 192.0.2.17
0074         ip -6 route add 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::2
0075 }
0076 
0077 h2_destroy()
0078 {
0079         ip -6 route del 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::2
0080         ip route del 192.0.2.0/28 vrf v$h2 nexthop via 192.0.2.17
0081         vlan_destroy $h2 200
0082         simple_if_fini $h2
0083 }
0084 
0085 router_rp1_200_create()
0086 {
0087         ip link add name $rp1.200 up \
0088                 link $rp1 addrgenmode eui64 type vlan id 200
0089         ip address add dev $rp1.200 192.0.2.2/28
0090         ip address add dev $rp1.200 2001:db8:1::2/64
0091         ip stats set dev $rp1.200 l3_stats on
0092 }
0093 
0094 router_rp1_200_destroy()
0095 {
0096         ip stats set dev $rp1.200 l3_stats off
0097         ip address del dev $rp1.200 2001:db8:1::2/64
0098         ip address del dev $rp1.200 192.0.2.2/28
0099         ip link del dev $rp1.200
0100 }
0101 
0102 router_create()
0103 {
0104         ip link set dev $rp1 up
0105         router_rp1_200_create
0106 
0107         ip link set dev $rp2 up
0108         vlan_create $rp2 200 "" 192.0.2.17/28 2001:db8:2::2/64
0109 }
0110 
0111 router_destroy()
0112 {
0113         vlan_destroy $rp2 200
0114         ip link set dev $rp2 down
0115 
0116         router_rp1_200_destroy
0117         ip link set dev $rp1 down
0118 }
0119 
0120 setup_prepare()
0121 {
0122         h1=${NETIFS[p1]}
0123         rp1=${NETIFS[p2]}
0124 
0125         rp2=${NETIFS[p3]}
0126         h2=${NETIFS[p4]}
0127 
0128         rp1mac=$(mac_get $rp1)
0129         rp2mac=$(mac_get $rp2)
0130 
0131         vrf_prepare
0132 
0133         h1_create
0134         h2_create
0135 
0136         router_create
0137 
0138         forwarding_enable
0139 }
0140 
0141 cleanup()
0142 {
0143         pre_cleanup
0144 
0145         forwarding_restore
0146 
0147         router_destroy
0148 
0149         h2_destroy
0150         h1_destroy
0151 
0152         vrf_cleanup
0153 }
0154 
0155 ping_ipv4()
0156 {
0157         ping_test $h1.200 192.0.2.18 " IPv4"
0158 }
0159 
0160 ping_ipv6()
0161 {
0162         ping_test $h1.200 2001:db8:2::1 " IPv6"
0163 }
0164 
0165 send_packets_rx_ipv4()
0166 {
0167         # Send 21 packets instead of 20, because the first one might trap and go
0168         # through the SW datapath, which might not bump the HW counter.
0169         $MZ $h1.200 -c 21 -d 20msec -p 100 \
0170             -a own -b $rp1mac -A 192.0.2.1 -B 192.0.2.18 \
0171             -q -t udp sp=54321,dp=12345
0172 }
0173 
0174 send_packets_rx_ipv6()
0175 {
0176         $MZ $h1.200 -6 -c 21 -d 20msec -p 100 \
0177             -a own -b $rp1mac -A 2001:db8:1::1 -B 2001:db8:2::1 \
0178             -q -t udp sp=54321,dp=12345
0179 }
0180 
0181 send_packets_tx_ipv4()
0182 {
0183         $MZ $h2.200 -c 21 -d 20msec -p 100 \
0184             -a own -b $rp2mac -A 192.0.2.18 -B 192.0.2.1 \
0185             -q -t udp sp=54321,dp=12345
0186 }
0187 
0188 send_packets_tx_ipv6()
0189 {
0190         $MZ $h2.200 -6 -c 21 -d 20msec -p 100 \
0191             -a own -b $rp2mac -A 2001:db8:2::1 -B 2001:db8:1::1 \
0192             -q -t udp sp=54321,dp=12345
0193 }
0194 
0195 ___test_stats()
0196 {
0197         local dir=$1; shift
0198         local prot=$1; shift
0199 
0200         local a
0201         local b
0202 
0203         a=$(hw_stats_get l3_stats $rp1.200 ${dir} packets)
0204         send_packets_${dir}_${prot}
0205         "$@"
0206         b=$(busywait "$TC_HIT_TIMEOUT" until_counter_is ">= $a + 20" \
0207                        hw_stats_get l3_stats $rp1.200 ${dir} packets)
0208         check_err $? "Traffic not reflected in the counter: $a -> $b"
0209 }
0210 
0211 __test_stats()
0212 {
0213         local dir=$1; shift
0214         local prot=$1; shift
0215 
0216         RET=0
0217         ___test_stats "$dir" "$prot"
0218         log_test "Test $dir packets: $prot"
0219 }
0220 
0221 test_stats_rx_ipv4()
0222 {
0223         __test_stats rx ipv4
0224 }
0225 
0226 test_stats_tx_ipv4()
0227 {
0228         __test_stats tx ipv4
0229 }
0230 
0231 test_stats_rx_ipv6()
0232 {
0233         __test_stats rx ipv6
0234 }
0235 
0236 test_stats_tx_ipv6()
0237 {
0238         __test_stats tx ipv6
0239 }
0240 
0241 # Make sure everything works well even after stats have been disabled and
0242 # reenabled on the same device without touching the L3 configuration.
0243 respin_enablement()
0244 {
0245         log_info "Turning stats off and on again"
0246         ip stats set dev $rp1.200 l3_stats off
0247         ip stats set dev $rp1.200 l3_stats on
0248 }
0249 
0250 # For the initial run, l3_stats is enabled on a completely set up netdevice. Now
0251 # do it the other way around: enabling the L3 stats on an L2 netdevice, and only
0252 # then apply the L3 configuration.
0253 reapply_config()
0254 {
0255         log_info "Reapplying configuration"
0256 
0257         router_rp1_200_destroy
0258 
0259         ip link add name $rp1.200 link $rp1 addrgenmode none type vlan id 200
0260         ip stats set dev $rp1.200 l3_stats on
0261         ip link set dev $rp1.200 up addrgenmode eui64
0262         ip address add dev $rp1.200 192.0.2.2/28
0263         ip address add dev $rp1.200 2001:db8:1::2/64
0264 }
0265 
0266 __test_stats_report()
0267 {
0268         local dir=$1; shift
0269         local prot=$1; shift
0270 
0271         local a
0272         local b
0273 
0274         RET=0
0275 
0276         a=$(hw_stats_get l3_stats $rp1.200 ${dir} packets)
0277         send_packets_${dir}_${prot}
0278         ip address flush dev $rp1.200
0279         b=$(busywait "$TC_HIT_TIMEOUT" until_counter_is ">= $a + 20" \
0280                        hw_stats_get l3_stats $rp1.200 ${dir} packets)
0281         check_err $? "Traffic not reflected in the counter: $a -> $b"
0282         log_test "Test ${dir} packets: stats pushed on loss of L3"
0283 
0284         ip stats set dev $rp1.200 l3_stats off
0285         ip link del dev $rp1.200
0286         router_rp1_200_create
0287 }
0288 
0289 test_stats_report_rx()
0290 {
0291         __test_stats_report rx ipv4
0292 }
0293 
0294 test_stats_report_tx()
0295 {
0296         __test_stats_report tx ipv4
0297 }
0298 
0299 test_destroy_enabled()
0300 {
0301         RET=0
0302 
0303         ip link del dev $rp1.200
0304         router_rp1_200_create
0305 
0306         log_test "Destroy l3_stats-enabled netdev"
0307 }
0308 
0309 test_double_enable()
0310 {
0311         RET=0
0312         ___test_stats rx ipv4 \
0313                 ip stats set dev $rp1.200 l3_stats on
0314         log_test "Test stat retention across a spurious enablement"
0315 }
0316 
0317 trap cleanup EXIT
0318 
0319 setup_prepare
0320 setup_wait
0321 
0322 tests_run
0323 
0324 exit $EXIT_STATUS
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