Commit cb4a4c69 authored by Maciej Żenczykowski's avatar Maciej Żenczykowski Committed by David S. Miller

ipv6 addrconf: disallow rtr_solicits < -1

This disallows setting /proc/sys/net/ipv6/conf/*/router_solicitations
to values below -1.

-1 continues to mean an unlimited number of retransmits.

Note: this depends on 'ipv6 addrconf: remove addrconf_sysctl_hop_limit()'
Signed-off-by: default avatarMaciej Żenczykowski <maze@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7aa6ec22
......@@ -5729,6 +5729,7 @@ int addrconf_sysctl_ignore_routes_with_linkdown(struct ctl_table *ctl,
return ret;
}
static int minus_one = -1;
static const int one = 1;
static const int two_five_five = 255;
......@@ -5789,7 +5790,8 @@ static const struct ctl_table addrconf_sysctl[] = {
.data = &ipv6_devconf.rtr_solicits,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
.proc_handler = proc_dointvec_minmax,
.extra1 = &minus_one,
},
{
.procname = "router_solicitation_interval",
......
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