Re: [PATCH net-next V5 6/6] icmp: add response to RFC 8335 PROBE messages

[Eric Dumazet]

On 3/24/21 7:18 PM, Andreas Roeseler wrote:
> Modify the icmp_rcv function to check PROBE messages and call icmp_echo
> if a PROBE request is detected.
> 


...

> @@ -1340,6 +1440,7 @@ static int __net_init icmp_sk_init(struct net *net)
>  
>       /* Control parameters for ECHO replies. */
>       net->ipv4.sysctl_icmp_echo_ignore_all = 0;
> +     net->ipv4.sysctl_icmp_echo_enable_probe = 0;
>       net->ipv4.sysctl_icmp_echo_ignore_broadcasts = 1;
>  
>       /* Control parameter - ignore bogus broadcast responses? */
> 

Where is sysctl_icmp_echo_enable_probe defined ?

Please include a cover letter, also add proper documentation for any new sysctl
in Documentation/networking/ip-sysctl.rst