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authorNikolay Borisov <kernel@kyup.com>2016-02-03 10:46:51 +0300
committerDavid S. Miller <davem@davemloft.net>2016-02-07 22:35:10 +0300
commit12ed8244ed8b31b023ea6d2851fd8b15f2999e9b (patch)
tree5634ea70baf72e6d4008d3daa40d0f4dbbee1705 /net/ipv4/syncookies.c
parent7c083ecb3ba4583a625d5ff9655d1a819e374493 (diff)
downloadlinux-12ed8244ed8b31b023ea6d2851fd8b15f2999e9b.tar.xz
ipv4: Namespaceify tcp syncookies sysctl knob
Signed-off-by: Nikolay Borisov <kernel@kyup.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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))