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Date:   Wed, 26 Aug 2020 19:48:57 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, dsahern@...il.com,
        mlxsw@...dia.com, Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 7/7] selftests: fib_nexthops: Test IPv6 route with group after replacing IPv4 nexthops

From: Ido Schimmel <idosch@...dia.com>

Test that an IPv6 route can not use a nexthop group with mixed IPv4 and
IPv6 nexthops, but can use it after replacing the IPv4 nexthops with
IPv6 nexthops.

Output without previous patch:

# ./fib_nexthops.sh -t ipv6_fcnal_runtime

IPv6 functional runtime
-----------------------
TEST: Route add                                                     [ OK ]
TEST: Route delete                                                  [ OK ]
TEST: Ping with nexthop                                             [ OK ]
TEST: Ping - multipath                                              [ OK ]
TEST: Ping - blackhole                                              [ OK ]
TEST: Ping - blackhole replaced with gateway                        [ OK ]
TEST: Ping - gateway replaced by blackhole                          [ OK ]
TEST: Ping - group with blackhole                                   [ OK ]
TEST: Ping - group blackhole replaced with gateways                 [ OK ]
TEST: IPv6 route with device only nexthop                           [ OK ]
TEST: IPv6 multipath route with nexthop mix - dev only + gw         [ OK ]
TEST: IPv6 route can not have a v4 gateway                          [ OK ]
TEST: Nexthop replace - v6 route, v4 nexthop                        [ OK ]
TEST: Nexthop replace of group entry - v6 route, v4 nexthop         [ OK ]
TEST: IPv6 route can not have a group with v4 and v6 gateways       [ OK ]
TEST: IPv6 route can not have a group with v4 and v6 gateways       [ OK ]
TEST: IPv6 route using a group after removing v4 gateways           [ OK ]
TEST: IPv6 route can not have a group with v4 and v6 gateways       [ OK ]
TEST: IPv6 route can not have a group with v4 and v6 gateways       [ OK ]
TEST: IPv6 route using a group after replacing v4 gateways          [FAIL]
TEST: Nexthop with default route and rpfilter                       [ OK ]
TEST: Nexthop with multipath default route and rpfilter             [ OK ]

Tests passed:  21
Tests failed:   1

Output with previous patch:

# ./fib_nexthops.sh -t ipv6_fcnal_runtime

IPv6 functional runtime
-----------------------
TEST: Route add                                                     [ OK ]
TEST: Route delete                                                  [ OK ]
TEST: Ping with nexthop                                             [ OK ]
TEST: Ping - multipath                                              [ OK ]
TEST: Ping - blackhole                                              [ OK ]
TEST: Ping - blackhole replaced with gateway                        [ OK ]
TEST: Ping - gateway replaced by blackhole                          [ OK ]
TEST: Ping - group with blackhole                                   [ OK ]
TEST: Ping - group blackhole replaced with gateways                 [ OK ]
TEST: IPv6 route with device only nexthop                           [ OK ]
TEST: IPv6 multipath route with nexthop mix - dev only + gw         [ OK ]
TEST: IPv6 route can not have a v4 gateway                          [ OK ]
TEST: Nexthop replace - v6 route, v4 nexthop                        [ OK ]
TEST: Nexthop replace of group entry - v6 route, v4 nexthop         [ OK ]
TEST: IPv6 route can not have a group with v4 and v6 gateways       [ OK ]
TEST: IPv6 route can not have a group with v4 and v6 gateways       [ OK ]
TEST: IPv6 route using a group after removing v4 gateways           [ OK ]
TEST: IPv6 route can not have a group with v4 and v6 gateways       [ OK ]
TEST: IPv6 route can not have a group with v4 and v6 gateways       [ OK ]
TEST: IPv6 route using a group after replacing v4 gateways          [ OK ]
TEST: Nexthop with default route and rpfilter                       [ OK ]
TEST: Nexthop with multipath default route and rpfilter             [ OK ]

Tests passed:  22
Tests failed:   0

Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
 tools/testing/selftests/net/fib_nexthops.sh | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tools/testing/selftests/net/fib_nexthops.sh b/tools/testing/selftests/net/fib_nexthops.sh
index 06e4f12e838d..b74884d52913 100755
--- a/tools/testing/selftests/net/fib_nexthops.sh
+++ b/tools/testing/selftests/net/fib_nexthops.sh
@@ -754,6 +754,21 @@ ipv6_fcnal_runtime()
 	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 124"
 	log_test $? 0 "IPv6 route using a group after removing v4 gateways"
 
+	run_cmd "$IP ro delete 2001:db8:101::1/128"
+	run_cmd "$IP nexthop add id 87 via 172.16.1.1 dev veth1"
+	run_cmd "$IP nexthop add id 88 via 172.16.1.1 dev veth1"
+	run_cmd "$IP nexthop replace id 124 group 86/87/88"
+	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 124"
+	log_test $? 2 "IPv6 route can not have a group with v4 and v6 gateways"
+
+	run_cmd "$IP nexthop replace id 88 via 2001:db8:92::2 dev veth3"
+	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 124"
+	log_test $? 2 "IPv6 route can not have a group with v4 and v6 gateways"
+
+	run_cmd "$IP nexthop replace id 87 via 2001:db8:92::2 dev veth3"
+	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 124"
+	log_test $? 0 "IPv6 route using a group after replacing v4 gateways"
+
 	$IP nexthop flush >/dev/null 2>&1
 
 	#
-- 
2.26.2

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