diff options
| author | Joel Scherpelz <jscherpelz@google.com> | 2017-03-22 18:19:04 +0900 |
|---|---|---|
| committer | Joel Scherpelz <jscherpelz@google.com> | 2017-03-23 05:03:51 +0000 |
| commit | e953f89b8563efe0b92f70033d237874c43d4a3d (patch) | |
| tree | 33033f62f1fc0748641712912b267d1c24576e73 /include/linux | |
| parent | 22ff4ae765ff421ce0ba8a58f33b5df670224b72 (diff) | |
net: ipv6: Add sysctl for minimum prefix len acceptable in RIOs.
This commit adds a new sysctl accept_ra_rt_info_min_plen that
defines the minimum acceptable prefix length of Route Information
Options. The new sysctl is intended to be used together with
accept_ra_rt_info_max_plen to configure a range of acceptable
prefix lengths. It is useful to prevent misconfigurations from
unintentionally blackholing too much of the IPv6 address space
(e.g., home routers announcing RIOs for fc00::/7, which is
incorrect).
[backport of net-next bbea124bc99df968011e76eba105fe964a4eceab]
Bug: 33333670
Test: net_test passes
Signed-off-by: Joel Scherpelz <jscherpelz@google.com>
Acked-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ipv6.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index ce777260e9ea..1182f0e21697 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -36,6 +36,7 @@ struct ipv6_devconf { __s32 accept_ra_rtr_pref; __s32 rtr_probe_interval; #ifdef CONFIG_IPV6_ROUTE_INFO + __s32 accept_ra_rt_info_min_plen; __s32 accept_ra_rt_info_max_plen; #endif #endif |