tcp: Namespace-ify sysctl_tcp_app_win

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index fd77037ac800..6af4b58ac6d5 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -79,7 +79,6 @@
 #include <linux/unaligned/access_ok.h>
 #include <linux/static_key.h>
 
-int sysctl_tcp_app_win __read_mostly = 31;
 int sysctl_tcp_adv_win_scale __read_mostly = 1;
 EXPORT_SYMBOL(sysctl_tcp_adv_win_scale);
 
@@ -428,6 +427,7 @@ static void tcp_fixup_rcvbuf(struct sock *sk)
  */
 void tcp_init_buffer_space(struct sock *sk)
 {
+        int tcp_app_win = sock_net(sk)->ipv4.sysctl_tcp_app_win;
         struct tcp_sock *tp = tcp_sk(sk);
         int maxwin;
 
@@ -446,14 +446,14 @@ void tcp_init_buffer_space(struct sock *sk)
         if (tp->window_clamp >= maxwin) {
                 tp->window_clamp = maxwin;
 
-                if (sysctl_tcp_app_win && maxwin > 4 * tp->advmss)
+                if (tcp_app_win && maxwin > 4 * tp->advmss)
                         tp->window_clamp = max(maxwin -
-                                               (maxwin >> sysctl_tcp_app_win),
+                                               (maxwin >> tcp_app_win),
                                                4 * tp->advmss);
         }
 
         /* Force reservation of one segment. */
-        if (sysctl_tcp_app_win &&
+        if (tcp_app_win &&
             tp->window_clamp > 2 * tp->advmss &&
             tp->window_clamp + tp->advmss > maxwin)
                 tp->window_clamp = max(2 * tp->advmss, maxwin - tp->advmss);