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selftests: pmtu: Minimum MTU for vti6 is 68

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A vti6 interface can carry IPv4 packets too.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefano Brivio 2018-04-26 19:41:02 +02:00 committed by David S. Miller
parent c36207bd87
commit 5a643c861d
1 changed files with 2 additions and 2 deletions
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4
tools/testing/selftests/net/pmtu.sh
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@ -368,7 +368,7 @@ test_pmtu_vti6_link_add_mtu() {
fail=0
min=1280
min=68 # vti6 can carry IPv4 packets too
max=$((65535 - 40))
# Check invalid values first
for v in $((min - 1)) $((max + 1)); do
@ -384,7 +384,7 @@ test_pmtu_vti6_link_add_mtu() {
done
# Now check valid values
for v in 1280 1300 $((65535 - 40)); do
for v in 68 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