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98af374602
After commitafef88e655("selftests/bpf: Store BPF object files with .bpf.o extension"), we should use *.bpf.o instead of *.o. In addition, use the BPF_FILE variable to save the BPF object file name, which can be better identified and modified. Fixes:afef88e655("selftests/bpf: Store BPF object files with .bpf.o extension") Signed-off-by: Wang Yufen <wangyufen@huawei.com> Acked-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/r/1666235134-562-1-git-send-email-wangyufen@huawei.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
234 lines
5.9 KiB
Bash
Executable File
234 lines
5.9 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Author: Jesper Dangaard Brouer <hawk@kernel.org>
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# Kselftest framework requirement - SKIP code is 4.
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readonly KSFT_SKIP=4
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readonly NS1="ns1-$(mktemp -u XXXXXX)"
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readonly NS2="ns2-$(mktemp -u XXXXXX)"
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# Allow wrapper scripts to name test
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if [ -z "$TESTNAME" ]; then
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TESTNAME=xdp_vlan
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fi
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# Default XDP mode
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XDP_MODE=xdpgeneric
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usage() {
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echo "Testing XDP + TC eBPF VLAN manipulations: $TESTNAME"
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echo ""
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echo "Usage: $0 [-vfh]"
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echo " -v | --verbose : Verbose"
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echo " --flush : Flush before starting (e.g. after --interactive)"
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echo " --interactive : Keep netns setup running after test-run"
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echo " --mode=XXX : Choose XDP mode (xdp | xdpgeneric | xdpdrv)"
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echo ""
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}
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valid_xdp_mode()
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{
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local mode=$1
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case "$mode" in
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xdpgeneric | xdpdrv | xdp)
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return 0
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;;
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*)
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return 1
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esac
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}
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cleanup()
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{
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local status=$?
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if [ "$status" = "0" ]; then
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echo "selftests: $TESTNAME [PASS]";
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else
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echo "selftests: $TESTNAME [FAILED]";
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fi
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if [ -n "$INTERACTIVE" ]; then
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echo "Namespace setup still active explore with:"
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echo " ip netns exec ${NS1} bash"
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echo " ip netns exec ${NS2} bash"
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exit $status
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fi
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set +e
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ip link del veth1 2> /dev/null
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ip netns del ${NS1} 2> /dev/null
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ip netns del ${NS2} 2> /dev/null
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}
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# Using external program "getopt" to get --long-options
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OPTIONS=$(getopt -o hvfi: \
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--long verbose,flush,help,interactive,debug,mode: -- "$@")
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if (( $? != 0 )); then
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usage
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echo "selftests: $TESTNAME [FAILED] Error calling getopt, unknown option?"
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exit 2
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fi
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eval set -- "$OPTIONS"
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## --- Parse command line arguments / parameters ---
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while true; do
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case "$1" in
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-v | --verbose)
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export VERBOSE=yes
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shift
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;;
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-i | --interactive | --debug )
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INTERACTIVE=yes
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shift
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;;
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-f | --flush )
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cleanup
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shift
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;;
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--mode )
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shift
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XDP_MODE=$1
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shift
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;;
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-- )
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shift
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break
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;;
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-h | --help )
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usage;
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echo "selftests: $TESTNAME [SKIP] usage help info requested"
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exit $KSFT_SKIP
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;;
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* )
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shift
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break
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;;
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esac
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done
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if [ "$EUID" -ne 0 ]; then
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echo "selftests: $TESTNAME [FAILED] need root privileges"
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exit 1
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fi
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valid_xdp_mode $XDP_MODE
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if [ $? -ne 0 ]; then
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echo "selftests: $TESTNAME [FAILED] unknown XDP mode ($XDP_MODE)"
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exit 1
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fi
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ip link set dev lo xdpgeneric off 2>/dev/null > /dev/null
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if [ $? -ne 0 ]; then
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echo "selftests: $TESTNAME [SKIP] need ip xdp support"
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exit $KSFT_SKIP
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fi
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# Interactive mode likely require us to cleanup netns
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if [ -n "$INTERACTIVE" ]; then
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ip link del veth1 2> /dev/null
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ip netns del ${NS1} 2> /dev/null
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ip netns del ${NS2} 2> /dev/null
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fi
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# Exit on failure
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set -e
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# Some shell-tools dependencies
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which ip > /dev/null
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which tc > /dev/null
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which ethtool > /dev/null
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# Make rest of shell verbose, showing comments as doc/info
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if [ -n "$VERBOSE" ]; then
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set -v
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fi
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# Create two namespaces
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ip netns add ${NS1}
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ip netns add ${NS2}
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# Run cleanup if failing or on kill
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trap cleanup 0 2 3 6 9
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# Create veth pair
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ip link add veth1 type veth peer name veth2
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# Move veth1 and veth2 into the respective namespaces
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ip link set veth1 netns ${NS1}
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ip link set veth2 netns ${NS2}
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# NOTICE: XDP require VLAN header inside packet payload
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# - Thus, disable VLAN offloading driver features
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# - For veth REMEMBER TX side VLAN-offload
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#
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# Disable rx-vlan-offload (mostly needed on ns1)
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ip netns exec ${NS1} ethtool -K veth1 rxvlan off
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ip netns exec ${NS2} ethtool -K veth2 rxvlan off
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#
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# Disable tx-vlan-offload (mostly needed on ns2)
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ip netns exec ${NS2} ethtool -K veth2 txvlan off
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ip netns exec ${NS1} ethtool -K veth1 txvlan off
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export IPADDR1=100.64.41.1
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export IPADDR2=100.64.41.2
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# In ns1/veth1 add IP-addr on plain net_device
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ip netns exec ${NS1} ip addr add ${IPADDR1}/24 dev veth1
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ip netns exec ${NS1} ip link set veth1 up
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# In ns2/veth2 create VLAN device
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export VLAN=4011
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export DEVNS2=veth2
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ip netns exec ${NS2} ip link add link $DEVNS2 name $DEVNS2.$VLAN type vlan id $VLAN
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ip netns exec ${NS2} ip addr add ${IPADDR2}/24 dev $DEVNS2.$VLAN
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ip netns exec ${NS2} ip link set $DEVNS2 up
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ip netns exec ${NS2} ip link set $DEVNS2.$VLAN up
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# Bringup lo in netns (to avoids confusing people using --interactive)
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ip netns exec ${NS1} ip link set lo up
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ip netns exec ${NS2} ip link set lo up
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# At this point, the hosts cannot reach each-other,
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# because ns2 are using VLAN tags on the packets.
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ip netns exec ${NS2} sh -c 'ping -W 1 -c 1 100.64.41.1 || echo "Success: First ping must fail"'
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# Now we can use the test_xdp_vlan.c program to pop/push these VLAN tags
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# ----------------------------------------------------------------------
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# In ns1: ingress use XDP to remove VLAN tags
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export DEVNS1=veth1
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export BPF_FILE=test_xdp_vlan.bpf.o
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# First test: Remove VLAN by setting VLAN ID 0, using "xdp_vlan_change"
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export XDP_PROG=xdp_vlan_change
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ip netns exec ${NS1} ip link set $DEVNS1 $XDP_MODE object $BPF_FILE section $XDP_PROG
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# In ns1: egress use TC to add back VLAN tag 4011
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# (del cmd)
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# tc qdisc del dev $DEVNS1 clsact 2> /dev/null
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#
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ip netns exec ${NS1} tc qdisc add dev $DEVNS1 clsact
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ip netns exec ${NS1} tc filter add dev $DEVNS1 egress \
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prio 1 handle 1 bpf da obj $BPF_FILE sec tc_vlan_push
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# Now the namespaces can reach each-other, test with ping:
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ip netns exec ${NS2} ping -i 0.2 -W 2 -c 2 $IPADDR1
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ip netns exec ${NS1} ping -i 0.2 -W 2 -c 2 $IPADDR2
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# Second test: Replace xdp prog, that fully remove vlan header
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#
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# Catch kernel bug for generic-XDP, that does didn't allow us to
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# remove a VLAN header, because skb->protocol still contain VLAN
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# ETH_P_8021Q indication, and this cause overwriting of our changes.
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#
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export XDP_PROG=xdp_vlan_remove_outer2
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ip netns exec ${NS1} ip link set $DEVNS1 $XDP_MODE off
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ip netns exec ${NS1} ip link set $DEVNS1 $XDP_MODE object $BPF_FILE section $XDP_PROG
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# Now the namespaces should still be able reach each-other, test with ping:
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ip netns exec ${NS2} ping -i 0.2 -W 2 -c 2 $IPADDR1
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ip netns exec ${NS1} ping -i 0.2 -W 2 -c 2 $IPADDR2
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