linux-kernel - Re: [PATCH v2] selftests:net change ifconfig with ip command

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Date:   Mon, 23 Oct 2023 08:18:57 -0600
From:   David Ahern <dsahern@...nel.org>
To:     Swarup Laxman Kotiaklapudi <swarupkotikalapudi@...il.com>,
        davem@...emloft.net, jiri@...nulli.us, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, shuah@...nel.org,
        netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org
Subject: Re: [PATCH v2] selftests:net change ifconfig with ip command

On 10/23/23 6:34 AM, Swarup Laxman Kotiaklapudi wrote:
> Change ifconfig with ip command,
> on a system where ifconfig is
> not used this script will not
> work correcly.
> 
> Test result with this patchset:
> 
> sudo make TARGETS="net" kselftest
> ....
> TAP version 13
> 1..1
>  timeout set to 1500
>  selftests: net: route_localnet.sh
>  run arp_announce test
>  net.ipv4.conf.veth0.route_localnet = 1
>  net.ipv4.conf.veth1.route_localnet = 1
>  net.ipv4.conf.veth0.arp_announce = 2
>  net.ipv4.conf.veth1.arp_announce = 2
>  PING 127.25.3.14 (127.25.3.14) from 127.25.3.4 veth0: 56(84)
>   bytes of data.
>  64 bytes from 127.25.3.14: icmp_seq=1 ttl=64 time=0.038 ms
>  64 bytes from 127.25.3.14: icmp_seq=2 ttl=64 time=0.068 ms
>  64 bytes from 127.25.3.14: icmp_seq=3 ttl=64 time=0.068 ms
>  64 bytes from 127.25.3.14: icmp_seq=4 ttl=64 time=0.068 ms
>  64 bytes from 127.25.3.14: icmp_seq=5 ttl=64 time=0.068 ms
> 
>  --- 127.25.3.14 ping statistics ---
>  5 packets transmitted, 5 received, 0% packet loss, time 4073ms
>  rtt min/avg/max/mdev = 0.038/0.062/0.068/0.012 ms
>  ok
>  run arp_ignore test
>  net.ipv4.conf.veth0.route_localnet = 1
>  net.ipv4.conf.veth1.route_localnet = 1
>  net.ipv4.conf.veth0.arp_ignore = 3
>  net.ipv4.conf.veth1.arp_ignore = 3
>  PING 127.25.3.14 (127.25.3.14) from 127.25.3.4 veth0: 56(84)
>   bytes of data.
>  64 bytes from 127.25.3.14: icmp_seq=1 ttl=64 time=0.032 ms
>  64 bytes from 127.25.3.14: icmp_seq=2 ttl=64 time=0.065 ms
>  64 bytes from 127.25.3.14: icmp_seq=3 ttl=64 time=0.066 ms
>  64 bytes from 127.25.3.14: icmp_seq=4 ttl=64 time=0.065 ms
>  64 bytes from 127.25.3.14: icmp_seq=5 ttl=64 time=0.065 ms
> 
>  --- 127.25.3.14 ping statistics ---
>  5 packets transmitted, 5 received, 0% packet loss, time 4092ms
>  rtt min/avg/max/mdev = 0.032/0.058/0.066/0.013 ms
>  ok
> ok 1 selftests: net: route_localnet.sh
> ...
> 
> Signed-off-by: Swarup Laxman Kotiaklapudi <swarupkotikalapudi@...il.com>
> ---
>  tools/testing/selftests/net/route_localnet.sh | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/selftests/net/route_localnet.sh b/tools/testing/selftests/net/route_localnet.sh
> index 116bfeab72fa..e08701c750e3 100755
> --- a/tools/testing/selftests/net/route_localnet.sh
> +++ b/tools/testing/selftests/net/route_localnet.sh
> @@ -18,8 +18,10 @@ setup() {
>      ip route del 127.0.0.0/8 dev lo table local
>      ip netns exec "${PEER_NS}" ip route del 127.0.0.0/8 dev lo table local
>  
> -    ifconfig veth0 127.25.3.4/24 up
> -    ip netns exec "${PEER_NS}" ifconfig veth1 127.25.3.14/24 up
> +    ip address add 127.25.3.4/24 dev veth0
> +    ip link set dev veth0 up
> +    ip netns exec "${PEER_NS}" ip address add 127.25.3.14/24 dev veth1
> +    ip netns exec "${PEER_NS}" ip link set dev veth1 up
>  
>      ip route flush cache
>      ip netns exec "${PEER_NS}" ip route flush cache

Reviewed-by: David Ahern <dsahern@...nel.org>