On 11/1/21 10:34 AM, Leonard Crestez wrote:
> diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
> index 97eb54774924..cc34de6e4817 100644
> --- a/net/ipv4/sysctl_net_ipv4.c
> +++ b/net/ipv4/sysctl_net_ipv4.c
> @@ -17,10 +17,11 @@
> #include <net/udp.h>
> #include <net/cipso_ipv4.h>
> #include <net/ping.h>
> #include <net/protocol.h>
> #include <net/netevent.h>
> +#include <net/tcp_authopt.h>
>
> static int two = 2;
> static int three __maybe_unused = 3;
> static int four = 4;
> static int thousand = 1000;
> @@ -583,10 +584,19 @@ static struct ctl_table ipv4_table[] = {
> .mode = 0644,
> .proc_handler = proc_douintvec_minmax,
> .extra1 = &sysctl_fib_sync_mem_min,
> .extra2 = &sysctl_fib_sync_mem_max,
> },
> +#ifdef CONFIG_TCP_AUTHOPT
> + {
> + .procname = "tcp_authopt",
> + .data = &sysctl_tcp_authopt,
> + .maxlen = sizeof(int),
> + .mode = 0644,
> + .proc_handler = proc_dointvec,
Just add it to the namespace set, and this could be a u8 (try to plug a
hole if possible) with min/max specified:
.maxlen = sizeof(u8),
.mode = 0644,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE
see icmp_echo_enable_probe as an example. And if you are not going to
clean up when toggled off, you need a handler that tells the user it can
not be disabled by erroring out on attempts to disable it.
