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Commit e28799e5 authored by Stefano Brivio's avatar Stefano Brivio Committed by David S. Miller
Browse files

selftests: pmtu: Introduce list_flush_ipv6_exception test case 



This test checks that route exceptions can be successfully listed and
flushed using ip -6 route {list,flush} cache.

Signed-off-by: default avatarStefano Brivio <sbrivio@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 48debfd7

tools/testing/selftests/net/pmtu.sh

+50 −1
Original line number Diff line number Diff line
@@ -111,6 +111,10 @@ 
#

# - cleanup_ipv6_exception

#	Same as above, but use IPv6 transport from A to B

#

# - list_flush_ipv6_exception

#	Using the same topology as in pmtu_ipv6, create exceptions, and check

#	they are shown when listing exception caches, gone after flushing them





# Kselftest framework requirement - SKIP code is 4.
@@ -151,7 +155,8 @@ tests=" 
	pmtu_vti6_link_add_mtu		vti6: MTU setting on link creation	0

	pmtu_vti6_link_change_mtu	vti6: MTU changes on link changes	0

	cleanup_ipv4_exception		ipv4: cleanup of cached exceptions	1

	cleanup_ipv6_exception		ipv6: cleanup of cached exceptions	1"

	cleanup_ipv6_exception		ipv6: cleanup of cached exceptions	1

	list_flush_ipv6_exception	ipv6: list and flush cached exceptions	1"



NS_A="ns-A"

NS_B="ns-B"
@@ -1202,6 +1207,50 @@ run_test_nh() { 
	USE_NH=no

}



test_list_flush_ipv6_exception() {

	setup namespaces routing || return 2

	trace "${ns_a}"  veth_A-R1    "${ns_r1}" veth_R1-A \

	      "${ns_r1}" veth_R1-B    "${ns_b}"  veth_B-R1 \

	      "${ns_a}"  veth_A-R2    "${ns_r2}" veth_R2-A \

	      "${ns_r2}" veth_R2-B    "${ns_b}"  veth_B-R2



	dst1="${prefix6}:${b_r1}::1"

	dst2="${prefix6}:${b_r2}::1"



	# Set up initial MTU values

	mtu "${ns_a}"  veth_A-R1 2000

	mtu "${ns_r1}" veth_R1-A 2000

	mtu "${ns_r1}" veth_R1-B 1500

	mtu "${ns_b}"  veth_B-R1 1500



	mtu "${ns_a}"  veth_A-R2 2000

	mtu "${ns_r2}" veth_R2-A 2000

	mtu "${ns_r2}" veth_R2-B 1500

	mtu "${ns_b}"  veth_B-R2 1500



	fail=0



	# Create route exceptions

	run_cmd ${ns_a} ${ping6} -q -M want -i 0.1 -w 1 -s 1800 ${dst1}

	run_cmd ${ns_a} ${ping6} -q -M want -i 0.1 -w 1 -s 1800 ${dst2}



	if [ "$(${ns_a} ip -6 route list cache | wc -l)" -ne 2 ]; then

		err "  can't list cached exceptions"

		fail=1

	fi



	run_cmd ${ns_a} ip -6 route flush cache

	sleep 1

	pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"

	pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"

	if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ]; then

		err "  can't flush cached exceptions"

		fail=1

	fi



	return ${fail}

}



usage() {

	echo

	echo "$0 [OPTIONS] [TEST]..."