diff options
Diffstat (limited to 'tools')
| -rwxr-xr-x | tools/testing/selftests/net/pmtu.sh | 82 |
1 files changed, 74 insertions, 8 deletions
diff --git a/tools/testing/selftests/net/pmtu.sh b/tools/testing/selftests/net/pmtu.sh index 269e839b747e..ab367e75f095 100755 --- a/tools/testing/selftests/net/pmtu.sh +++ b/tools/testing/selftests/net/pmtu.sh @@ -112,6 +112,10 @@ # - cleanup_ipv6_exception # Same as above, but use IPv6 transport from A to B # +# - list_flush_ipv4_exception +# Using the same topology as in pmtu_ipv4, create exceptions, and check +# they are shown when listing exception caches, gone after flushing them +# # - list_flush_ipv6_exception # Using the same topology as in pmtu_ipv6, create exceptions, and check # they are shown when listing exception caches, gone after flushing them @@ -156,6 +160,7 @@ tests=" pmtu_vti6_link_change_mtu vti6: MTU changes on link changes 0 cleanup_ipv4_exception ipv4: cleanup of cached exceptions 1 cleanup_ipv6_exception ipv6: cleanup of cached exceptions 1 + list_flush_ipv4_exception ipv4: list and flush cached exceptions 1 list_flush_ipv6_exception ipv6: list and flush cached exceptions 1" NS_A="ns-A" @@ -1207,6 +1212,61 @@ run_test_nh() { USE_NH=no } +test_list_flush_ipv4_exception() { + setup namespaces routing || return 2 + trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \ + "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \ + "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \ + "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2 + + dst_prefix1="${prefix4}.${b_r1}." + dst2="${prefix4}.${b_r2}.1" + + # Set up initial MTU values + mtu "${ns_a}" veth_A-R1 2000 + mtu "${ns_r1}" veth_R1-A 2000 + mtu "${ns_r1}" veth_R1-B 1500 + mtu "${ns_b}" veth_B-R1 1500 + + mtu "${ns_a}" veth_A-R2 2000 + mtu "${ns_r2}" veth_R2-A 2000 + mtu "${ns_r2}" veth_R2-B 1500 + mtu "${ns_b}" veth_B-R2 1500 + + fail=0 + + # Add 100 addresses for veth endpoint on B reached by default A route + for i in $(seq 100 199); do + run_cmd ${ns_b} ip addr add "${dst_prefix1}${i}" dev veth_B-R1 + done + + # Create 100 cached route exceptions for path via R1, one via R2. Note + # that with IPv4 we need to actually cause a route lookup that matches + # the exception caused by ICMP, in order to actually have a cached + # route, so we need to ping each destination twice + for i in $(seq 100 199); do + run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst_prefix1}${i}" + done + run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst2}" + + # Each exception is printed as two lines + if [ "$(${ns_a} ip route list cache | wc -l)" -ne 202 ]; then + err " can't list cached exceptions" + fail=1 + fi + + run_cmd ${ns_a} ip route flush cache + pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst_prefix}1)" + pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst_prefix}2)" + if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ] || \ + [ -n "$(${ns_a} ip route list cache)" ]; then + err " can't flush cached exceptions" + fail=1 + fi + + return ${fail} +} + test_list_flush_ipv6_exception() { setup namespaces routing || return 2 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \ @@ -1214,7 +1274,7 @@ test_list_flush_ipv6_exception() { "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \ "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2 - dst1="${prefix6}:${b_r1}::1" + dst_prefix1="${prefix6}:${b_r1}::" dst2="${prefix6}:${b_r2}::1" # Set up initial MTU values @@ -1230,20 +1290,26 @@ test_list_flush_ipv6_exception() { fail=0 - # Create route exceptions - run_cmd ${ns_a} ${ping6} -q -M want -i 0.1 -w 1 -s 1800 ${dst1} - run_cmd ${ns_a} ${ping6} -q -M want -i 0.1 -w 1 -s 1800 ${dst2} + # Add 100 addresses for veth endpoint on B reached by default A route + for i in $(seq 100 199); do + run_cmd ${ns_b} ip addr add "${dst_prefix1}${i}" dev veth_B-R1 + done - if [ "$(${ns_a} ip -6 route list cache | wc -l)" -ne 2 ]; then + # Create 100 cached route exceptions for path via R1, one via R2 + for i in $(seq 100 199); do + run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst_prefix1}${i}" + done + run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst2}" + if [ "$(${ns_a} ip -6 route list cache | wc -l)" -ne 101 ]; then err " can't list cached exceptions" fail=1 fi run_cmd ${ns_a} ip -6 route flush cache - sleep 1 - pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})" + pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst_prefix1}100")" pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})" - if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ]; then + if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ] || \ + [ -n "$(${ns_a} ip -6 route list cache)" ]; then err " can't flush cached exceptions" fail=1 fi |