net: check net.core.somaxconn sysctl values

[deliverable/linux.git] / net / core / sysctl_net_core.c

diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index b59b6804fd987c079720cd43c9b2f91dd21c9a8d..31107abd278391dfe6752a46fea03ec22978b604 100644 (file)
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -21,7 +21,9 @@
 #include <net/net_ratelimit.h>
 #include <net/busy_poll.h>
 
+static int zero = 0;
 static int one = 1;
+static int ushort_max = USHRT_MAX;
 
 #ifdef CONFIG_RPS
 static int rps_sock_flow_sysctl(struct ctl_table *table, int write,
@@ -339,7 +341,9 @@ static struct ctl_table netns_core_table[] = {
                .data           = &init_net.core.sysctl_somaxconn,
                .maxlen         = sizeof(int),
                .mode           = 0644,
-               .proc_handler   = proc_dointvec
+               .extra1         = &zero,
+               .extra2         = &ushort_max,
+               .proc_handler   = proc_dointvec_minmax
        },
        { }
 };