On Wed, 2021-03-24 at 20:47 +0100, Eric Dumazet wrote: > > > 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 ?
It is defined in patch 3 of this patchset. > > Please include a cover letter, also add proper documentation for any > new sysctl > in Documentation/networking/ip-sysctl.rst > Will do.
