1 files changed, 1 insertions, 0 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 191b2f78b19d..3c475a2a8432 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2465,6 +2465,7 @@ static int __net_init tcp_sk_init(struct net *net)
         net->ipv4.tcp_death_row.hashinfo = &tcp_hashinfo;
 
         net->ipv4.sysctl_max_syn_backlog = max(128, cnt / 256);
+        net->ipv4.sysctl_tcp_sack = 1;
 
         return 0;
 fail: