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Commit 35b49424 authored by Stefano Brivio's avatar Stefano Brivio Committed by David S. Miller
Browse files

selftests: pmtu: Add pmtu_vti6_default_mtu test 



Same as pmtu_vti4_default_mtu, but on IPv6 with vti6.

Signed-off-by: default avatarStefano Brivio <sbrivio@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a41c789b

tools/testing/selftests/net/pmtu.sh

+17 −1
Original line number Diff line number Diff line
@@ -18,10 +18,14 @@ 
#	endpoints. Check that MTU assigned to vti interface is the MTU of the

#	lower layer (veth) minus additional lower layer headers (zero, for veth)

#	minus IPv4 header length

#

# - pmtu_vti6_default_mtu

#	Same as above, for IPv6



tests="

	pmtu_vti6_exception	vti6: 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"



NS_A="ns-$(mktemp -u XXXXXX)"

NS_B="ns-$(mktemp -u XXXXXX)"
@@ -225,6 +229,18 @@ test_pmtu_vti4_default_mtu() { 
	fi

}



test_pmtu_vti6_default_mtu() {

	setup namespaces veth vti6 || return 2



	# Check that MTU of vti device is MTU of veth minus IPv6 header length

	veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"

	vti6_mtu="$(link_get_mtu "${ns_a}" vti6_a)"

	if [ $((veth_mtu - vti6_mtu)) -ne 40 ]; then

		err "  vti MTU ${vti6_mtu} is not veth MTU ${veth_mtu} minus IPv6 header length"

		return 1

	fi

}



trap cleanup EXIT



exitcode=0