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Date:   Wed, 26 Aug 2020 13:17:24 -0600
From:   David Ahern <dsahern@...il.com>
To:     Ido Schimmel <idosch@...sch.org>, netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, mlxsw@...dia.com,
        Ido Schimmel <idosch@...dia.com>
Subject: Re: [PATCH net-next 7/7] selftests: fib_nexthops: Test IPv6 route
 with group after replacing IPv4 nexthops

On 8/26/20 10:48 AM, Ido Schimmel wrote:
> 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
>  
>  	#
> 

Reviewed-by: David Ahern <dsahern@...il.com>

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