1 files changed, 6 insertions, 0 deletions

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f12d500ec85c..7dc9ab84bb69 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -317,6 +317,11 @@ struct tcp_splice_state {
 unsigned long tcp_memory_pressure __read_mostly;
 EXPORT_SYMBOL_GPL(tcp_memory_pressure);
 
+DEFINE_STATIC_KEY_FALSE(tcp_rx_skb_cache_key);
+EXPORT_SYMBOL(tcp_rx_skb_cache_key);
+
+DEFINE_STATIC_KEY_FALSE(tcp_tx_skb_cache_key);
+
 void tcp_enter_memory_pressure(struct sock *sk)
 {
         unsigned long val;
@@ -3868,6 +3873,7 @@ void __init tcp_init(void)
         unsigned long limit;
         unsigned int i;
 
+        BUILD_BUG_ON(TCP_MIN_SND_MSS <= MAX_TCP_OPTION_SPACE);
         BUILD_BUG_ON(sizeof(struct tcp_skb_cb) >
                      FIELD_SIZEOF(struct sk_buff, cb));