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Commit c81c7012 authored by Sabrina Dubroca's avatar Sabrina Dubroca Committed by David S. Miller
Browse files

selftests: pmtu: detect correct binary to ping ipv6 addresses 



Some systems don't have the ping6 binary anymore, and use ping for
everything. Detect the absence of ping6 and try to use ping instead.

Fixes: d1f1b9cb ("selftests: net: Introduce first PMTU test")
Signed-off-by: default avatarSabrina Dubroca <sd@queasysnail.net>
Acked-by: default avatarStefano Brivio <sbrivio@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 902b5417

tools/testing/selftests/net/pmtu.sh

+4 −1
Original line number Diff line number Diff line
@@ -46,6 +46,9 @@ 
# Kselftest framework requirement - SKIP code is 4.

ksft_skip=4



# Some systems don't have a ping6 binary anymore

which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)



tests="

	pmtu_vti6_exception		vti6: PMTU exceptions

	pmtu_vti4_exception		vti4: PMTU exceptions
@@ -274,7 +277,7 @@ test_pmtu_vti6_exception() { 
	mtu "${ns_b}" veth_b 4000

	mtu "${ns_a}" vti6_a 5000

	mtu "${ns_b}" vti6_b 5000

	${ns_a} ping6 -q -i 0.1 -w 2 -s 60000 ${vti6_b_addr} > /dev/null

	${ns_a} ${ping6} -q -i 0.1 -w 2 -s 60000 ${vti6_b_addr} > /dev/null



	# Check that exception was created

	if [ "$(route_get_dst_pmtu_from_exception "${ns_a}" ${vti6_b_addr})" = "" ]; then