Commit 8b6022fc authored by Stefano Brivio's avatar Stefano Brivio Committed by David S. Miller

selftests: pmtu: Add pmtu_vti6_link_add_mtu test

Same as pmtu_vti4_link_add_mtu test, but for IPv6.
Signed-off-by: default avatarStefano Brivio <sbrivio@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 719e1215
...@@ -33,13 +33,17 @@ ...@@ -33,13 +33,17 @@
# - pmtu_vti4_link_add_mtu # - pmtu_vti4_link_add_mtu
# Set up vti4 interface passing MTU value at link creation, check MTU is # Set up vti4 interface passing MTU value at link creation, check MTU is
# configured, and that link is not created with invalid MTU values # configured, and that link is not created with invalid MTU values
#
# - pmtu_vti6_link_add_mtu
# Same as above, for IPv6
tests=" tests="
pmtu_vti6_exception vti6: PMTU exceptions pmtu_vti6_exception vti6: PMTU exceptions
pmtu_vti4_exception vti4: PMTU exceptions pmtu_vti4_exception vti4: PMTU exceptions
pmtu_vti4_default_mtu vti4: default MTU assignment pmtu_vti4_default_mtu vti4: default MTU assignment
pmtu_vti6_default_mtu vti6: 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-$(mktemp -u XXXXXX)" NS_A="ns-$(mktemp -u XXXXXX)"
NS_B="ns-$(mktemp -u XXXXXX)" NS_B="ns-$(mktemp -u XXXXXX)"
...@@ -344,6 +348,44 @@ test_pmtu_vti4_link_add_mtu() { ...@@ -344,6 +348,44 @@ test_pmtu_vti4_link_add_mtu() {
return ${fail} 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 trap cleanup EXIT
exitcode=0 exitcode=0
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment