1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4source lib.sh 5TESTS=" 6 basic_tx_ipv4 7 basic_tx_ipv6 8 learning 9 proxy_ipv4 10 proxy_ipv6 11" 12VERBOSE=0 13 14################################################################################ 15# Utilities 16 17run_cmd() 18{ 19 local cmd="$1" 20 local out 21 local stderr="2>/dev/null" 22 23 if [ "$VERBOSE" = "1" ]; then 24 echo "COMMAND: $cmd" 25 stderr= 26 fi 27 28 out=$(eval "$cmd" "$stderr") 29 rc=$? 30 if [ "$VERBOSE" -eq 1 ] && [ -n "$out" ]; then 31 echo " $out" 32 fi 33 34 return $rc 35} 36 37################################################################################ 38# Cleanup 39 40exit_cleanup_all() 41{ 42 cleanup_all_ns 43 exit "${EXIT_STATUS}" 44} 45 46################################################################################ 47# Tests 48 49nh_stats_get() 50{ 51 ip -n "$ns1" -s -j nexthop show id 10 | jq ".[][\"group_stats\"][][\"packets\"]" 52} 53 54tc_stats_get() 55{ 56 tc_rule_handle_stats_get "dev dummy1 egress" 101 ".packets" "-n $ns1" 57} 58 59basic_tx_common() 60{ 61 local af_str=$1; shift 62 local proto=$1; shift 63 local local_addr=$1; shift 64 local plen=$1; shift 65 local remote_addr=$1; shift 66 67 RET=0 68 69 # Test basic Tx functionality. Check that stats are incremented on 70 # both the FDB nexthop group and the egress device. 71 72 run_cmd "ip -n $ns1 link add name dummy1 up type dummy" 73 run_cmd "ip -n $ns1 route add $remote_addr/$plen dev dummy1" 74 run_cmd "tc -n $ns1 qdisc add dev dummy1 clsact" 75 run_cmd "tc -n $ns1 filter add dev dummy1 egress proto $proto pref 1 handle 101 flower ip_proto udp dst_ip $remote_addr dst_port 4789 action pass" 76 77 run_cmd "ip -n $ns1 address add $local_addr/$plen dev lo" 78 79 run_cmd "ip -n $ns1 nexthop add id 1 via $remote_addr fdb" 80 run_cmd "ip -n $ns1 nexthop add id 10 group 1 fdb" 81 82 run_cmd "ip -n $ns1 link add name vx0 up type vxlan id 10010 local $local_addr dstport 4789" 83 run_cmd "bridge -n $ns1 fdb add 00:11:22:33:44:55 dev vx0 self static nhid 10" 84 85 run_cmd "ip netns exec $ns1 mausezahn vx0 -a own -b 00:11:22:33:44:55 -c 1 -q" 86 87 busywait "$BUSYWAIT_TIMEOUT" until_counter_is "== 1" nh_stats_get > /dev/null 88 check_err $? "FDB nexthop group stats did not increase" 89 90 busywait "$BUSYWAIT_TIMEOUT" until_counter_is "== 1" tc_stats_get > /dev/null 91 check_err $? "tc filter stats did not increase" 92 93 log_test "VXLAN FDB nexthop: $af_str basic Tx" 94} 95 96basic_tx_ipv4() 97{ 98 basic_tx_common "IPv4" ipv4 192.0.2.1 32 192.0.2.2 99} 100 101basic_tx_ipv6() 102{ 103 basic_tx_common "IPv6" ipv6 2001:db8:1::1 128 2001:db8:1::2 104} 105 106learning() 107{ 108 RET=0 109 110 # When learning is enabled on the VXLAN device, an incoming packet 111 # might try to refresh an FDB entry that points to an FDB nexthop group 112 # instead of an ordinary remote destination. Check that the kernel does 113 # not crash in this situation. 114 115 run_cmd "ip -n $ns1 address add 192.0.2.1/32 dev lo" 116 run_cmd "ip -n $ns1 address add 192.0.2.2/32 dev lo" 117 118 run_cmd "ip -n $ns1 nexthop add id 1 via 192.0.2.3 fdb" 119 run_cmd "ip -n $ns1 nexthop add id 10 group 1 fdb" 120 121 run_cmd "ip -n $ns1 link add name vx0 up type vxlan id 10010 local 192.0.2.1 dstport 12345 localbypass" 122 run_cmd "ip -n $ns1 link add name vx1 up type vxlan id 10020 local 192.0.2.2 dstport 54321 learning" 123 124 run_cmd "bridge -n $ns1 fdb add 00:11:22:33:44:55 dev vx0 self static dst 192.0.2.2 port 54321 vni 10020" 125 run_cmd "bridge -n $ns1 fdb add 00:aa:bb:cc:dd:ee dev vx1 self static nhid 10" 126 127 run_cmd "ip netns exec $ns1 mausezahn vx0 -a 00:aa:bb:cc:dd:ee -b 00:11:22:33:44:55 -c 1 -q" 128 129 log_test "VXLAN FDB nexthop: learning" 130} 131 132proxy_common() 133{ 134 local af_str=$1; shift 135 local local_addr=$1; shift 136 local plen=$1; shift 137 local remote_addr=$1; shift 138 local neigh_addr=$1; shift 139 local ping_cmd=$1; shift 140 141 RET=0 142 143 # When the "proxy" option is enabled on the VXLAN device, the device 144 # will suppress ARP requests and IPv6 Neighbor Solicitation messages if 145 # it is able to reply on behalf of the remote host. That is, if a 146 # matching and valid neighbor entry is configured on the VXLAN device 147 # whose MAC address is not behind the "any" remote (0.0.0.0 / ::). The 148 # FDB entry for the neighbor's MAC address might point to an FDB 149 # nexthop group instead of an ordinary remote destination. Check that 150 # the kernel does not crash in this situation. 151 152 run_cmd "ip -n $ns1 address add $local_addr/$plen dev lo" 153 154 run_cmd "ip -n $ns1 nexthop add id 1 via $remote_addr fdb" 155 run_cmd "ip -n $ns1 nexthop add id 10 group 1 fdb" 156 157 run_cmd "ip -n $ns1 link add name vx0 up type vxlan id 10010 local $local_addr dstport 4789 proxy" 158 159 run_cmd "ip -n $ns1 neigh add $neigh_addr lladdr 00:11:22:33:44:55 nud perm dev vx0" 160 161 run_cmd "bridge -n $ns1 fdb add 00:11:22:33:44:55 dev vx0 self static nhid 10" 162 163 run_cmd "ip netns exec $ns1 $ping_cmd" 164 165 log_test "VXLAN FDB nexthop: $af_str proxy" 166} 167 168proxy_ipv4() 169{ 170 proxy_common "IPv4" 192.0.2.1 32 192.0.2.2 192.0.2.3 \ 171 "arping -b -c 1 -s 192.0.2.1 -I vx0 192.0.2.3" 172} 173 174proxy_ipv6() 175{ 176 proxy_common "IPv6" 2001:db8:1::1 128 2001:db8:1::2 2001:db8:1::3 \ 177 "ndisc6 -r 1 -s 2001:db8:1::1 -w 1 2001:db8:1::3 vx0" 178} 179 180################################################################################ 181# Usage 182 183usage() 184{ 185 cat <<EOF 186usage: ${0##*/} OPTS 187 188 -t <test> Test(s) to run (default: all) 189 (options: $TESTS) 190 -p Pause on fail 191 -v Verbose mode (show commands and output) 192EOF 193} 194 195################################################################################ 196# Main 197 198while getopts ":t:pvh" opt; do 199 case $opt in 200 t) TESTS=$OPTARG;; 201 p) PAUSE_ON_FAIL=yes;; 202 v) VERBOSE=$((VERBOSE + 1));; 203 h) usage; exit 0;; 204 *) usage; exit 1;; 205 esac 206done 207 208require_command mausezahn 209require_command arping 210require_command ndisc6 211require_command jq 212 213if ! ip nexthop help 2>&1 | grep -q "stats"; then 214 echo "SKIP: iproute2 ip too old, missing nexthop stats support" 215 exit "$ksft_skip" 216fi 217 218trap exit_cleanup_all EXIT 219 220for t in $TESTS 221do 222 setup_ns ns1; $t; cleanup_all_ns; 223done 224