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authorStefano Brivio <sbrivio@redhat.com>2018-03-17 02:31:46 +0100
committerDavid S. Miller <davem@davemloft.net>2018-03-17 20:15:14 -0400
commit8b6022fc7839e3ba2255bb264b16b0fffe961212 (patch)
tree09171a03dac19e991538375718ccf3d9d82ac3ea /tools
parent719e121574497436e39536c2a888b901fbe30cfe (diff)
downloadlinux-8b6022fc7839e3ba2255bb264b16b0fffe961212.tar.bz2
selftests: pmtu: Add pmtu_vti6_link_add_mtu test
Same as pmtu_vti4_link_add_mtu test, but for IPv6. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools')
-rwxr-xr-xtools/testing/selftests/net/pmtu.sh44
1 files changed, 43 insertions, 1 deletions
diff --git a/tools/testing/selftests/net/pmtu.sh b/tools/testing/selftests/net/pmtu.sh
index d9f7ef2c213d..cd12a1f5c003 100755
--- a/tools/testing/selftests/net/pmtu.sh
+++ b/tools/testing/selftests/net/pmtu.sh
@@ -33,13 +33,17 @@
# - pmtu_vti4_link_add_mtu
# Set up vti4 interface passing MTU value at link creation, check MTU is
# configured, and that link is not created with invalid MTU values
+#
+# - pmtu_vti6_link_add_mtu
+# Same as above, for IPv6
tests="
pmtu_vti6_exception vti6: PMTU exceptions
pmtu_vti4_exception vti4: PMTU exceptions
pmtu_vti4_default_mtu vti4: default MTU assignment
pmtu_vti6_default_mtu vti6: default MTU assignment
- pmtu_vti4_link_add_mtu vti4: MTU setting on link creation"
+ pmtu_vti4_link_add_mtu vti4: MTU setting on link creation
+ pmtu_vti6_link_add_mtu vti6: MTU setting on link creation"
NS_A="ns-$(mktemp -u XXXXXX)"
NS_B="ns-$(mktemp -u XXXXXX)"
@@ -344,6 +348,44 @@ test_pmtu_vti4_link_add_mtu() {
return ${fail}
}
+test_pmtu_vti6_link_add_mtu() {
+ setup namespaces || return 2
+
+ ${ns_a} ip link add vti6_a type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10
+ [ $? -ne 0 ] && err " vti6 not supported" && return 2
+ ${ns_a} ip link del vti6_a
+
+ fail=0
+
+ min=1280
+ max=$((65535 - 40))
+ # Check invalid values first
+ for v in $((min - 1)) $((max + 1)); do
+ ${ns_a} ip link add vti6_a mtu ${v} type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10 2>/dev/null
+ # This can fail, or MTU can be adjusted to a proper value
+ [ $? -ne 0 ] && continue
+ mtu="$(link_get_mtu "${ns_a}" vti6_a)"
+ if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then
+ err " vti6 tunnel created with invalid MTU ${v}"
+ fail=1
+ fi
+ ${ns_a} ip link del vti6_a
+ done
+
+ # Now check valid values
+ for v in 1280 1300 $((65535 - 40)); do
+ ${ns_a} ip link add vti6_a mtu ${v} type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10
+ mtu="$(link_get_mtu "${ns_a}" vti6_a)"
+ ${ns_a} ip link del vti6_a
+ if [ "${mtu}" != "${v}" ]; then
+ err " vti6 MTU ${mtu} doesn't match configured value ${v}"
+ fail=1
+ fi
+ done
+
+ return ${fail}
+}
+
trap cleanup EXIT
exitcode=0