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| 1 | +#!/bin/bash |
| 2 | +# SPDX-License-Identifier: GPL-2.0 |
| 3 | + |
| 4 | +source lib.sh |
| 5 | + |
| 6 | +if ! modprobe -q -n br_netfilter 2>&1; then |
| 7 | + echo "SKIP: Test needs br_netfilter kernel module" |
| 8 | + exit $ksft_skip |
| 9 | +fi |
| 10 | + |
| 11 | +cleanup() |
| 12 | +{ |
| 13 | + cleanup_all_ns |
| 14 | +} |
| 15 | + |
| 16 | +trap cleanup EXIT |
| 17 | + |
| 18 | +setup_ns host vtep router |
| 19 | + |
| 20 | +create_topology() |
| 21 | +{ |
| 22 | + ip link add host-eth0 netns "$host" type veth peer name vtep-host netns "$vtep" |
| 23 | + ip link add vtep-router netns "$vtep" type veth peer name router-vtep netns "$router" |
| 24 | +} |
| 25 | + |
| 26 | +setup_host() |
| 27 | +{ |
| 28 | + # bring ports up |
| 29 | + ip -n "$host" addr add 10.0.0.1/24 dev host-eth0 |
| 30 | + ip -n "$host" link set host-eth0 up |
| 31 | + |
| 32 | + # Add VLAN 10,20 |
| 33 | + for vid in 10 20; do |
| 34 | + ip -n "$host" link add link host-eth0 name host-eth0.$vid type vlan id $vid |
| 35 | + ip -n "$host" addr add 10.0.$vid.1/24 dev host-eth0.$vid |
| 36 | + ip -n "$host" link set host-eth0.$vid up |
| 37 | + done |
| 38 | +} |
| 39 | + |
| 40 | +setup_vtep() |
| 41 | +{ |
| 42 | + # create bridge on vtep |
| 43 | + ip -n "$vtep" link add name br0 type bridge |
| 44 | + ip -n "$vtep" link set br0 type bridge vlan_filtering 1 |
| 45 | + |
| 46 | + # VLAN 10 is untagged PVID |
| 47 | + ip -n "$vtep" link set dev vtep-host master br0 |
| 48 | + bridge -n "$vtep" vlan add dev vtep-host vid 10 pvid untagged |
| 49 | + |
| 50 | + # VLAN 20 as other VID |
| 51 | + ip -n "$vtep" link set dev vtep-host master br0 |
| 52 | + bridge -n "$vtep" vlan add dev vtep-host vid 20 |
| 53 | + |
| 54 | + # single-vxlan device on vtep |
| 55 | + ip -n "$vtep" address add dev vtep-router 60.0.0.1/24 |
| 56 | + ip -n "$vtep" link add dev vxd type vxlan external \ |
| 57 | + vnifilter local 60.0.0.1 remote 60.0.0.2 dstport 4789 ttl 64 |
| 58 | + ip -n "$vtep" link set vxd master br0 |
| 59 | + |
| 60 | + # Add VLAN-VNI 1-1 mappings |
| 61 | + bridge -n "$vtep" link set dev vxd vlan_tunnel on |
| 62 | + for vid in 10 20; do |
| 63 | + bridge -n "$vtep" vlan add dev vxd vid $vid |
| 64 | + bridge -n "$vtep" vlan add dev vxd vid $vid tunnel_info id $vid |
| 65 | + bridge -n "$vtep" vni add dev vxd vni $vid |
| 66 | + done |
| 67 | + |
| 68 | + # bring ports up |
| 69 | + ip -n "$vtep" link set vxd up |
| 70 | + ip -n "$vtep" link set vtep-router up |
| 71 | + ip -n "$vtep" link set vtep-host up |
| 72 | + ip -n "$vtep" link set dev br0 up |
| 73 | +} |
| 74 | + |
| 75 | +setup_router() |
| 76 | +{ |
| 77 | + # bring ports up |
| 78 | + ip -n "$router" link set router-vtep up |
| 79 | +} |
| 80 | + |
| 81 | +setup() |
| 82 | +{ |
| 83 | + modprobe -q br_netfilter |
| 84 | + create_topology |
| 85 | + setup_host |
| 86 | + setup_vtep |
| 87 | + setup_router |
| 88 | +} |
| 89 | + |
| 90 | +test_large_mtu_untagged_traffic() |
| 91 | +{ |
| 92 | + ip -n "$vtep" link set vxd mtu 1000 |
| 93 | + ip -n "$host" neigh add 10.0.0.2 lladdr ca:fe:ba:be:00:01 dev host-eth0 |
| 94 | + ip netns exec "$host" \ |
| 95 | + ping -q 10.0.0.2 -I host-eth0 -c 1 -W 0.5 -s2000 > /dev/null 2>&1 |
| 96 | + return 0 |
| 97 | +} |
| 98 | + |
| 99 | +test_large_mtu_tagged_traffic() |
| 100 | +{ |
| 101 | + for vid in 10 20; do |
| 102 | + ip -n "$vtep" link set vxd mtu 1000 |
| 103 | + ip -n "$host" neigh add 10.0.$vid.2 lladdr ca:fe:ba:be:00:01 dev host-eth0.$vid |
| 104 | + ip netns exec "$host" \ |
| 105 | + ping -q 10.0.$vid.2 -I host-eth0.$vid -c 1 -W 0.5 -s2000 > /dev/null 2>&1 |
| 106 | + done |
| 107 | + return 0 |
| 108 | +} |
| 109 | + |
| 110 | +do_test() |
| 111 | +{ |
| 112 | + # Frames will be dropped so ping will not succeed |
| 113 | + # If it doesn't panic, it passes |
| 114 | + test_large_mtu_tagged_traffic |
| 115 | + test_large_mtu_untagged_traffic |
| 116 | +} |
| 117 | + |
| 118 | +setup && \ |
| 119 | +echo "Test for VxLAN fragmentation with large MTU in br_netfilter:" && \ |
| 120 | +do_test && echo "PASS!" |
| 121 | +exit $? |
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