[PATCH net-next] net/ipv6: Fix misuse of proc_dointvec "flowlabel_reflect"

[Eiichi Tsukata]

/proc/sys/net/ipv6/flowlabel_reflect assumes written value to be in the
range of 0 to 3. Use proc_dointvec_minmax instead of proc_dointvec.

Fixes: 323a53c41292 ("ipv6: tcp: enable flowlabel reflection in some RST 
packets")
Signed-off-by: Eiichi Tsukata <de...@etsukata.com>
---
 net/ipv6/sysctl_net_ipv6.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
index 6d86fac472e7..831573461e19 100644
--- a/net/ipv6/sysctl_net_ipv6.c
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -114,7 +114,7 @@ static struct ctl_table ipv6_table_template[] = {
                .data           = &init_net.ipv6.sysctl.flowlabel_reflect,
                .maxlen         = sizeof(int),
                .mode           = 0644,
-               .proc_handler   = proc_dointvec,
+               .proc_handler   = proc_dointvec_minmax,
                .extra1         = &zero,
                .extra2         = &three,
        },
-- 
2.21.0