2 files changed, 15 insertions, 0 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index ff13c4cc287a..982b4ecd187b 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1247,6 +1247,12 @@ static inline struct page *sk_stream_alloc_page(struct sock *sk)
                      (skb != (struct sk_buff *)&(sk)->sk_write_queue);  \
                      skb = skb->next)
 
+/*from STCP for fast SACK Process*/
+#define sk_stream_for_retrans_queue_from(skb, sk)                       \
+                for (; (skb != (sk)->sk_send_head) &&                   \
+                     (skb != (struct sk_buff *)&(sk)->sk_write_queue);  \
+                     skb = skb->next)
+
 /*
  *      Default write policy as shown to user space via poll/select/SIGIO
  */
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 6e6f0f3f1dd8..0f9848011972 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1207,6 +1207,15 @@ static inline void tcp_mib_init(void)
         TCP_ADD_STATS_USER(TCP_MIB_MAXCONN, -1);
 }
 
+/*from STCP */
+static inline void clear_all_retrans_hints(struct tcp_sock *tp){
+        tp->lost_skb_hint = NULL;
+        tp->scoreboard_skb_hint = NULL;
+        tp->retransmit_skb_hint = NULL;
+        tp->forward_skb_hint = NULL;
+        tp->fastpath_skb_hint = NULL;
+}
+
 /* /proc */
 enum tcp_seq_states {
         TCP_SEQ_STATE_LISTENING,