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Date:   Thu, 12 May 2022 13:31:01 +0000
From:   Amit Cohen <amcohen@...dia.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     "dsahern@...il.com" <dsahern@...il.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "shuah@...nel.org" <shuah@...nel.org>, mlxsw <mlxsw@...dia.com>
Subject: RE: [PATCH net-next] selftests: fib_nexthops: Make the test more
 robust

+ David Ahern

> -----Original Message-----
> From: Amit Cohen <amcohen@...dia.com>
> Sent: Thursday, May 12, 2022 4:12 PM
> To: netdev@...r.kernel.org
> Cc: davem@...emloft.net; edumazet@...gle.com; kuba@...nel.org; pabeni@...hat.com; shuah@...nel.org; mlxsw
> <mlxsw@...dia.com>; Amit Cohen <amcohen@...dia.com>
> Subject: [PATCH net-next] selftests: fib_nexthops: Make the test more robust
> 
> Rarely some of the test cases fail. Make the test more robust by increasing
> the timeout of ping commands to 5 seconds.
> 
> Signed-off-by: Amit Cohen <amcohen@...dia.com>
> ---
>  tools/testing/selftests/net/fib_nexthops.sh | 48 ++++++++++-----------
>  1 file changed, 24 insertions(+), 24 deletions(-)
> 
> diff --git a/tools/testing/selftests/net/fib_nexthops.sh b/tools/testing/selftests/net/fib_nexthops.sh
> index b3bf5319bb0e..a99ee3fb2e13 100755
> --- a/tools/testing/selftests/net/fib_nexthops.sh
> +++ b/tools/testing/selftests/net/fib_nexthops.sh
> @@ -882,13 +882,13 @@ ipv6_fcnal_runtime()
>  	log_test $? 0 "Route delete"
> 
>  	run_cmd "$IP ro add 2001:db8:101::1/128 nhid 81"
> -	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
> +	run_cmd "ip netns exec me ping -c1 -w5 2001:db8:101::1"
>  	log_test $? 0 "Ping with nexthop"
> 
>  	run_cmd "$IP nexthop add id 82 via 2001:db8:92::2 dev veth3"
>  	run_cmd "$IP nexthop add id 122 group 81/82"
>  	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 122"
> -	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
> +	run_cmd "ip netns exec me ping -c1 -w5 2001:db8:101::1"
>  	log_test $? 0 "Ping - multipath"
> 
>  	#
> @@ -896,26 +896,26 @@ ipv6_fcnal_runtime()
>  	#
>  	run_cmd "$IP -6 nexthop add id 83 blackhole"
>  	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 83"
> -	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
> +	run_cmd "ip netns exec me ping -c1 -w5 2001:db8:101::1"
>  	log_test $? 2 "Ping - blackhole"
> 
>  	run_cmd "$IP nexthop replace id 83 via 2001:db8:91::2 dev veth1"
> -	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
> +	run_cmd "ip netns exec me ping -c1 -w5 2001:db8:101::1"
>  	log_test $? 0 "Ping - blackhole replaced with gateway"
> 
>  	run_cmd "$IP -6 nexthop replace id 83 blackhole"
> -	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
> +	run_cmd "ip netns exec me ping -c1 -w5 2001:db8:101::1"
>  	log_test $? 2 "Ping - gateway replaced by blackhole"
> 
>  	run_cmd "$IP ro replace 2001:db8:101::1/128 nhid 122"
> -	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
> +	run_cmd "ip netns exec me ping -c1 -w5 2001:db8:101::1"
>  	if [ $? -eq 0 ]; then
>  		run_cmd "$IP nexthop replace id 122 group 83"
> -		run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
> +		run_cmd "ip netns exec me ping -c1 -w5 2001:db8:101::1"
>  		log_test $? 2 "Ping - group with blackhole"
> 
>  		run_cmd "$IP nexthop replace id 122 group 81/82"
> -		run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
> +		run_cmd "ip netns exec me ping -c1 -w5 2001:db8:101::1"
>  		log_test $? 0 "Ping - group blackhole replaced with gateways"
>  	else
>  		log_test 2 0 "Ping - multipath failed"
> @@ -1003,10 +1003,10 @@ ipv6_fcnal_runtime()
>  	run_cmd "$IP nexthop add id 92 via 2001:db8:92::2 dev veth3"
>  	run_cmd "$IP nexthop add id 93 group 91/92"
>  	run_cmd "$IP -6 ro add default nhid 91"
> -	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
> +	run_cmd "ip netns exec me ping -c1 -w5 2001:db8:101::1"
>  	log_test $? 0 "Nexthop with default route and rpfilter"
>  	run_cmd "$IP -6 ro replace default nhid 93"
> -	run_cmd "ip netns exec me ping -c1 -w1 2001:db8:101::1"
> +	run_cmd "ip netns exec me ping -c1 -w5 2001:db8:101::1"
>  	log_test $? 0 "Nexthop with multipath default route and rpfilter"
> 
>  	# TO-DO:
> @@ -1460,13 +1460,13 @@ ipv4_fcnal_runtime()
>  	#
>  	run_cmd "$IP nexthop replace id 21 via 172.16.1.2 dev veth1"
>  	run_cmd "$IP ro replace 172.16.101.1/32 nhid 21"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 0 "Basic ping"
> 
>  	run_cmd "$IP nexthop replace id 22 via 172.16.2.2 dev veth3"
>  	run_cmd "$IP nexthop add id 122 group 21/22"
>  	run_cmd "$IP ro replace 172.16.101.1/32 nhid 122"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 0 "Ping - multipath"
> 
>  	run_cmd "$IP ro delete 172.16.101.1/32 nhid 122"
> @@ -1477,7 +1477,7 @@ ipv4_fcnal_runtime()
>  	run_cmd "$IP nexthop add id 501 via 172.16.1.2 dev veth1"
>  	run_cmd "$IP ro add default nhid 501"
>  	run_cmd "$IP ro add default via 172.16.1.3 dev veth1 metric 20"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 0 "Ping - multiple default routes, nh first"
> 
>  	# flip the order
> @@ -1486,7 +1486,7 @@ ipv4_fcnal_runtime()
>  	run_cmd "$IP ro add default via 172.16.1.2 dev veth1 metric 20"
>  	run_cmd "$IP nexthop replace id 501 via 172.16.1.3 dev veth1"
>  	run_cmd "$IP ro add default nhid 501 metric 20"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 0 "Ping - multiple default routes, nh second"
> 
>  	run_cmd "$IP nexthop delete nhid 501"
> @@ -1497,26 +1497,26 @@ ipv4_fcnal_runtime()
>  	#
>  	run_cmd "$IP nexthop add id 23 blackhole"
>  	run_cmd "$IP ro replace 172.16.101.1/32 nhid 23"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 2 "Ping - blackhole"
> 
>  	run_cmd "$IP nexthop replace id 23 via 172.16.1.2 dev veth1"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 0 "Ping - blackhole replaced with gateway"
> 
>  	run_cmd "$IP nexthop replace id 23 blackhole"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 2 "Ping - gateway replaced by blackhole"
> 
>  	run_cmd "$IP ro replace 172.16.101.1/32 nhid 122"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	if [ $? -eq 0 ]; then
>  		run_cmd "$IP nexthop replace id 122 group 23"
> -		run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +		run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  		log_test $? 2 "Ping - group with blackhole"
> 
>  		run_cmd "$IP nexthop replace id 122 group 21/22"
> -		run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +		run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  		log_test $? 0 "Ping - group blackhole replaced with gateways"
>  	else
>  		log_test 2 0 "Ping - multipath failed"
> @@ -1543,7 +1543,7 @@ ipv4_fcnal_runtime()
>  	run_cmd "$IP nexthop add id 24 via ${lladdr} dev veth1"
>  	set +e
>  	run_cmd "$IP ro replace 172.16.101.1/32 nhid 24"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 0 "IPv6 nexthop with IPv4 route"
> 
>  	$IP neigh sh | grep -q "${lladdr} dev veth1"
> @@ -1567,11 +1567,11 @@ ipv4_fcnal_runtime()
> 
>  	check_route "172.16.101.1" "172.16.101.1 nhid 101 nexthop via inet6 ${lladdr} dev veth1 weight 1 nexthop via 172.16.1.2 dev
> veth1 weight 1"
> 
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 0 "IPv6 nexthop with IPv4 route"
> 
>  	run_cmd "$IP ro replace 172.16.101.1/32 via inet6 ${lladdr} dev veth1"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 0 "IPv4 route with IPv6 gateway"
> 
>  	$IP neigh sh | grep -q "${lladdr} dev veth1"
> @@ -1588,7 +1588,7 @@ ipv4_fcnal_runtime()
> 
>  	run_cmd "$IP ro del 172.16.101.1/32 via inet6 ${lladdr} dev veth1"
>  	run_cmd "$IP -4 ro add default via inet6 ${lladdr} dev veth1"
> -	run_cmd "ip netns exec me ping -c1 -w1 172.16.101.1"
> +	run_cmd "ip netns exec me ping -c1 -w5 172.16.101.1"
>  	log_test $? 0 "IPv4 default route with IPv6 gateway"
> 
>  	#
> --
> 2.35.1

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