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Commit 5a643c86 authored by Stefano Brivio's avatar Stefano Brivio Committed by David S. Miller
Browse files

selftests: pmtu: Minimum MTU for vti6 is 68 



A vti6 interface can carry IPv4 packets too.

Signed-off-by: default avatarStefano Brivio <sbrivio@redhat.com>
Reviewed-by: default avatarXin Long <lucien.xin@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c36207bd

tools/testing/selftests/net/pmtu.sh

+2 −2
Original line number Diff line number Diff line
@@ -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