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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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0afe0a998c
Currently, lwt_len_hist's map lwt_len_hist_map is uses pinning, and the
map isn't cleared on test end. This leds to reuse of that map for
each test, which prevents the results of the test from being accurate.
This commit fixes the problem by removing of pinned map from bpffs.
Also, this commit add the executable permission to shell script
files.
Fixes: f74599f7c5 ("bpf: Add tests and samples for LWT-BPF")
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20201124090310.24374-7-danieltimlee@gmail.com
400 lines
9 KiB
Bash
Executable file
400 lines
9 KiB
Bash
Executable file
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Uncomment to see generated bytecode
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#VERBOSE=verbose
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NS1=lwt_ns1
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NS2=lwt_ns2
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VETH0=tst_lwt1a
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VETH1=tst_lwt1b
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VETH2=tst_lwt2a
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VETH3=tst_lwt2b
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IPVETH0="192.168.254.1"
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IPVETH1="192.168.254.2"
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IPVETH1b="192.168.254.3"
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IPVETH2="192.168.111.1"
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IPVETH3="192.168.111.2"
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IP_LOCAL="192.168.99.1"
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TRACE_ROOT=/sys/kernel/debug/tracing
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function lookup_mac()
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{
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set +x
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if [ ! -z "$2" ]; then
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MAC=$(ip netns exec $2 ip link show $1 | grep ether | awk '{print $2}')
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else
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MAC=$(ip link show $1 | grep ether | awk '{print $2}')
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fi
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MAC="${MAC//:/}"
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echo "0x${MAC:10:2}${MAC:8:2}${MAC:6:2}${MAC:4:2}${MAC:2:2}${MAC:0:2}"
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set -x
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}
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function cleanup {
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set +ex
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rm test_lwt_bpf.o 2> /dev/null
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ip link del $VETH0 2> /dev/null
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ip link del $VETH1 2> /dev/null
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ip link del $VETH2 2> /dev/null
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ip link del $VETH3 2> /dev/null
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ip netns exec $NS1 killall netserver
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ip netns delete $NS1 2> /dev/null
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ip netns delete $NS2 2> /dev/null
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set -ex
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}
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function setup_one_veth {
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ip netns add $1
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ip link add $2 type veth peer name $3
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ip link set dev $2 up
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ip addr add $4/24 dev $2
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ip link set $3 netns $1
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ip netns exec $1 ip link set dev $3 up
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ip netns exec $1 ip addr add $5/24 dev $3
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if [ "$6" ]; then
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ip netns exec $1 ip addr add $6/32 dev $3
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fi
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}
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function get_trace {
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set +x
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cat ${TRACE_ROOT}/trace | grep -v '^#'
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set -x
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}
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function cleanup_routes {
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ip route del ${IPVETH1}/32 dev $VETH0 2> /dev/null || true
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ip route del table local local ${IP_LOCAL}/32 dev lo 2> /dev/null || true
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}
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function install_test {
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cleanup_routes
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cp /dev/null ${TRACE_ROOT}/trace
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OPTS="encap bpf headroom 14 $1 obj test_lwt_bpf.o section $2 $VERBOSE"
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if [ "$1" == "in" ]; then
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ip route add table local local ${IP_LOCAL}/32 $OPTS dev lo
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else
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ip route add ${IPVETH1}/32 $OPTS dev $VETH0
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fi
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}
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function remove_prog {
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if [ "$1" == "in" ]; then
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ip route del table local local ${IP_LOCAL}/32 dev lo
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else
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ip route del ${IPVETH1}/32 dev $VETH0
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fi
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}
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function filter_trace {
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# Add newline to allow starting EXPECT= variables on newline
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NL=$'\n'
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echo "${NL}$*" | sed -e 's/^.*: : //g'
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}
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function expect_fail {
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set +x
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echo "FAIL:"
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echo "Expected: $1"
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echo "Got: $2"
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set -x
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exit 1
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}
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function match_trace {
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set +x
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RET=0
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TRACE=$1
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EXPECT=$2
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GOT="$(filter_trace "$TRACE")"
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[ "$GOT" != "$EXPECT" ] && {
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expect_fail "$EXPECT" "$GOT"
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RET=1
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}
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set -x
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return $RET
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}
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function test_start {
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set +x
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echo "----------------------------------------------------------------"
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echo "Starting test: $*"
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echo "----------------------------------------------------------------"
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set -x
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}
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function failure {
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get_trace
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echo "FAIL: $*"
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exit 1
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}
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function test_ctx_xmit {
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test_start "test_ctx on lwt xmit"
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install_test xmit test_ctx
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ping -c 3 $IPVETH1 || {
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failure "test_ctx xmit: packets are dropped"
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}
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match_trace "$(get_trace)" "
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len 84 hash 0 protocol 8
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cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX
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len 84 hash 0 protocol 8
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cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX
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len 84 hash 0 protocol 8
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cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX" || exit 1
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remove_prog xmit
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}
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function test_ctx_out {
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test_start "test_ctx on lwt out"
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install_test out test_ctx
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ping -c 3 $IPVETH1 || {
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failure "test_ctx out: packets are dropped"
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}
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match_trace "$(get_trace)" "
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len 84 hash 0 protocol 0
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cb 1234 ingress_ifindex 0 ifindex 0
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len 84 hash 0 protocol 0
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cb 1234 ingress_ifindex 0 ifindex 0
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len 84 hash 0 protocol 0
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cb 1234 ingress_ifindex 0 ifindex 0" || exit 1
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remove_prog out
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}
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function test_ctx_in {
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test_start "test_ctx on lwt in"
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install_test in test_ctx
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ping -c 3 $IP_LOCAL || {
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failure "test_ctx out: packets are dropped"
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}
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# We will both request & reply packets as the packets will
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# be from $IP_LOCAL => $IP_LOCAL
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match_trace "$(get_trace)" "
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len 84 hash 0 protocol 8
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cb 1234 ingress_ifindex 1 ifindex 1
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len 84 hash 0 protocol 8
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cb 1234 ingress_ifindex 1 ifindex 1
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len 84 hash 0 protocol 8
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cb 1234 ingress_ifindex 1 ifindex 1
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len 84 hash 0 protocol 8
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cb 1234 ingress_ifindex 1 ifindex 1
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len 84 hash 0 protocol 8
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cb 1234 ingress_ifindex 1 ifindex 1
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len 84 hash 0 protocol 8
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cb 1234 ingress_ifindex 1 ifindex 1" || exit 1
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remove_prog in
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}
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function test_data {
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test_start "test_data on lwt $1"
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install_test $1 test_data
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ping -c 3 $IPVETH1 || {
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failure "test_data ${1}: packets are dropped"
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}
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match_trace "$(get_trace)" "
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src: 1fea8c0 dst: 2fea8c0
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src: 1fea8c0 dst: 2fea8c0
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src: 1fea8c0 dst: 2fea8c0" || exit 1
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remove_prog $1
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}
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function test_data_in {
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test_start "test_data on lwt in"
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install_test in test_data
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ping -c 3 $IP_LOCAL || {
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failure "test_data in: packets are dropped"
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}
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# We will both request & reply packets as the packets will
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# be from $IP_LOCAL => $IP_LOCAL
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match_trace "$(get_trace)" "
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src: 163a8c0 dst: 163a8c0
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src: 163a8c0 dst: 163a8c0
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src: 163a8c0 dst: 163a8c0
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src: 163a8c0 dst: 163a8c0
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src: 163a8c0 dst: 163a8c0
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src: 163a8c0 dst: 163a8c0" || exit 1
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remove_prog in
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}
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function test_cb {
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test_start "test_cb on lwt $1"
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install_test $1 test_cb
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ping -c 3 $IPVETH1 || {
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failure "test_cb ${1}: packets are dropped"
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}
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match_trace "$(get_trace)" "
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cb0: 0 cb1: 0 cb2: 0
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cb3: 0 cb4: 0
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cb0: 0 cb1: 0 cb2: 0
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cb3: 0 cb4: 0
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cb0: 0 cb1: 0 cb2: 0
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cb3: 0 cb4: 0" || exit 1
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remove_prog $1
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}
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function test_cb_in {
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test_start "test_cb on lwt in"
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install_test in test_cb
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ping -c 3 $IP_LOCAL || {
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failure "test_cb in: packets are dropped"
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}
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# We will both request & reply packets as the packets will
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# be from $IP_LOCAL => $IP_LOCAL
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match_trace "$(get_trace)" "
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cb0: 0 cb1: 0 cb2: 0
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cb3: 0 cb4: 0
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cb0: 0 cb1: 0 cb2: 0
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cb3: 0 cb4: 0
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cb0: 0 cb1: 0 cb2: 0
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cb3: 0 cb4: 0
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cb0: 0 cb1: 0 cb2: 0
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cb3: 0 cb4: 0
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cb0: 0 cb1: 0 cb2: 0
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cb3: 0 cb4: 0
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cb0: 0 cb1: 0 cb2: 0
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cb3: 0 cb4: 0" || exit 1
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remove_prog in
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}
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function test_drop_all {
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test_start "test_drop_all on lwt $1"
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install_test $1 drop_all
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ping -c 3 $IPVETH1 && {
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failure "test_drop_all ${1}: Unexpected success of ping"
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}
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match_trace "$(get_trace)" "
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dropping with: 2
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dropping with: 2
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dropping with: 2" || exit 1
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remove_prog $1
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}
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function test_drop_all_in {
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test_start "test_drop_all on lwt in"
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install_test in drop_all
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ping -c 3 $IP_LOCAL && {
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failure "test_drop_all in: Unexpected success of ping"
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}
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match_trace "$(get_trace)" "
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dropping with: 2
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dropping with: 2
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dropping with: 2" || exit 1
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remove_prog in
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}
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function test_push_ll_and_redirect {
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test_start "test_push_ll_and_redirect on lwt xmit"
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install_test xmit push_ll_and_redirect
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ping -c 3 $IPVETH1 || {
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failure "Redirected packets appear to be dropped"
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}
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match_trace "$(get_trace)" "
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redirected to $DST_IFINDEX
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redirected to $DST_IFINDEX
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redirected to $DST_IFINDEX" || exit 1
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remove_prog xmit
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}
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function test_no_l2_and_redirect {
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test_start "test_no_l2_and_redirect on lwt xmit"
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install_test xmit fill_garbage_and_redirect
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ping -c 3 $IPVETH1 && {
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failure "Unexpected success despite lack of L2 header"
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}
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match_trace "$(get_trace)" "
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redirected to $DST_IFINDEX
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redirected to $DST_IFINDEX
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redirected to $DST_IFINDEX" || exit 1
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remove_prog xmit
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}
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function test_rewrite {
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test_start "test_rewrite on lwt xmit"
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install_test xmit test_rewrite
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ping -c 3 $IPVETH1 || {
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failure "Rewritten packets appear to be dropped"
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}
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match_trace "$(get_trace)" "
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out: rewriting from 2fea8c0 to 3fea8c0
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out: rewriting from 2fea8c0 to 3fea8c0
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out: rewriting from 2fea8c0 to 3fea8c0" || exit 1
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remove_prog out
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}
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function test_fill_garbage {
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test_start "test_fill_garbage on lwt xmit"
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install_test xmit fill_garbage
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ping -c 3 $IPVETH1 && {
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failure "test_drop_all ${1}: Unexpected success of ping"
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}
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match_trace "$(get_trace)" "
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Set initial 96 bytes of header to FF
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Set initial 96 bytes of header to FF
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Set initial 96 bytes of header to FF" || exit 1
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remove_prog xmit
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}
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function test_netperf_nop {
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test_start "test_netperf_nop on lwt xmit"
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install_test xmit nop
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netperf -H $IPVETH1 -t TCP_STREAM || {
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failure "packets appear to be dropped"
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}
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match_trace "$(get_trace)" ""|| exit 1
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remove_prog xmit
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}
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function test_netperf_redirect {
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test_start "test_netperf_redirect on lwt xmit"
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install_test xmit push_ll_and_redirect_silent
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netperf -H $IPVETH1 -t TCP_STREAM || {
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failure "Rewritten packets appear to be dropped"
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}
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match_trace "$(get_trace)" ""|| exit 1
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remove_prog xmit
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}
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cleanup
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setup_one_veth $NS1 $VETH0 $VETH1 $IPVETH0 $IPVETH1 $IPVETH1b
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setup_one_veth $NS2 $VETH2 $VETH3 $IPVETH2 $IPVETH3
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ip netns exec $NS1 netserver
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echo 1 > ${TRACE_ROOT}/tracing_on
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DST_MAC=$(lookup_mac $VETH1 $NS1)
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SRC_MAC=$(lookup_mac $VETH0)
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DST_IFINDEX=$(cat /sys/class/net/$VETH0/ifindex)
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CLANG_OPTS="-O2 -target bpf -I ../include/"
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CLANG_OPTS+=" -DSRC_MAC=$SRC_MAC -DDST_MAC=$DST_MAC -DDST_IFINDEX=$DST_IFINDEX"
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clang $CLANG_OPTS -c test_lwt_bpf.c -o test_lwt_bpf.o
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test_ctx_xmit
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test_ctx_out
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test_ctx_in
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test_data "xmit"
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test_data "out"
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test_data_in
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test_cb "xmit"
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test_cb "out"
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test_cb_in
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test_drop_all "xmit"
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test_drop_all "out"
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test_drop_all_in
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test_rewrite
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test_push_ll_and_redirect
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test_no_l2_and_redirect
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test_fill_garbage
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test_netperf_nop
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test_netperf_redirect
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cleanup
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echo 0 > ${TRACE_ROOT}/tracing_on
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exit 0
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