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Merge branch 'selftests-pmtu-Add-test-choice-and-captures'
Stefano Brivio says: ==================== selftests: pmtu: Add test choice and captures This series adds a couple of features useful for debugging: 1/2 allows selecting single tests and 2/2 adds optional traffic captures. Semantics for current invocation of test script are preserved. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
commit
9e983c5898
1 changed files with 68 additions and 1 deletions
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@ -142,6 +142,7 @@ dummy6_mask="64"
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cleanup_done=1
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err_buf=
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tcpdump_pids=
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err() {
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err_buf="${err_buf}${1}
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@ -284,7 +285,24 @@ setup() {
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done
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}
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trace() {
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[ $tracing -eq 0 ] && return
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for arg do
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[ "${ns_cmd}" = "" ] && ns_cmd="${arg}" && continue
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${ns_cmd} tcpdump -s 0 -i "${arg}" -w "${name}_${arg}.pcap" 2> /dev/null &
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tcpdump_pids="${tcpdump_pids} $!"
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ns_cmd=
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done
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sleep 1
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}
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cleanup() {
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for pid in ${tcpdump_pids}; do
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kill ${pid}
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done
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tcpdump_pids=
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[ ${cleanup_done} -eq 1 ] && return
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for n in ${NS_A} ${NS_B} ${NS_R1} ${NS_R2}; do
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ip netns del ${n} 2> /dev/null
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@ -357,6 +375,10 @@ test_pmtu_ipvX() {
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family=${1}
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setup namespaces routing || return 2
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trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
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"${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
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"${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
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"${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
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if [ ${family} -eq 4 ]; then
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ping=ping
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@ -445,6 +467,8 @@ test_pmtu_ipv6_exception() {
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test_pmtu_vti4_exception() {
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setup namespaces veth vti4 xfrm4 || return 2
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trace "${ns_a}" veth_a "${ns_b}" veth_b \
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"${ns_a}" vti4_a "${ns_b}" vti4_b
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veth_mtu=1500
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vti_mtu=$((veth_mtu - 20))
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@ -473,6 +497,8 @@ test_pmtu_vti4_exception() {
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test_pmtu_vti6_exception() {
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setup namespaces veth vti6 xfrm6 || return 2
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trace "${ns_a}" veth_a "${ns_b}" veth_b \
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"${ns_a}" vti6_a "${ns_b}" vti6_b
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fail=0
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# Create route exception by exceeding link layer MTU
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@ -641,15 +667,56 @@ test_pmtu_vti6_link_change_mtu() {
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return ${fail}
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}
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trap cleanup EXIT
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usage() {
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echo
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echo "$0 [OPTIONS] [TEST]..."
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echo "If no TEST argument is given, all tests will be run."
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echo
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echo "Options"
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echo " --trace: capture traffic to TEST_INTERFACE.pcap"
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echo
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echo "Available tests${tests}"
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exit 1
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}
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exitcode=0
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desc=0
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IFS="
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"
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tracing=0
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for arg do
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if [ "${arg}" != "${arg#--*}" ]; then
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opt="${arg#--}"
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if [ "${opt}" = "trace" ]; then
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if which tcpdump > /dev/null 2>&1; then
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tracing=1
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else
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echo "=== tcpdump not available, tracing disabled"
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fi
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else
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usage
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fi
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else
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# Check first that all requested tests are available before
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# running any
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command -v > /dev/null "test_${arg}" || { echo "=== Test ${arg} not found"; usage; }
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fi
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done
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trap cleanup EXIT
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for t in ${tests}; do
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[ $desc -eq 0 ] && name="${t}" && desc=1 && continue || desc=0
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run_this=1
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for arg do
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[ "${arg}" != "${arg#--*}" ] && continue
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[ "${arg}" = "${name}" ] && run_this=1 && break
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run_this=0
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done
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[ $run_this -eq 0 ] && continue
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(
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unset IFS
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eval test_${name}
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