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Diffstat (limited to 'net/ipv4/syncookies.c')
-rw-r--r--net/ipv4/syncookies.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 643a86c49020..ba0dcffada3b 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -19,8 +19,6 @@
#include <net/tcp.h>
#include <net/route.h>
-extern int sysctl_tcp_syncookies;
-
static u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS] __read_mostly;
#define COOKIEBITS 24 /* Upper bits store count */
@@ -307,7 +305,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb)
__u8 rcv_wscale;
struct flowi4 fl4;
- if (!sysctl_tcp_syncookies || !th->ack || th->rst)
+ if (!sock_net(sk)->ipv4.sysctl_tcp_syncookies || !th->ack || th->rst)
goto out;
if (tcp_synq_no_recent_overflow(sk))