1 files changed, 7 insertions, 3 deletions

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index c6b9f92e8289..c5b94c1a5ee2 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -304,7 +304,6 @@ struct tcp_sock {
         u32     rtt_seq;        /* sequence number to update rttvar     */
 
         u32     packets_out;    /* Packets which are "in flight"        */
-        u32     left_out;       /* Packets which leaved network */
         u32     retrans_out;    /* Retransmitted packets out            */
 /*
  *      Options received (usually on last packet, some only on SYN packets).
@@ -333,6 +332,9 @@ struct tcp_sock {
 
         struct tcp_sack_block_wire recv_sack_cache[4];
 
+        u32     highest_sack;   /* Start seq of globally highest revd SACK
+                                 * (validity guaranteed only if sacked_out > 0) */
+
         /* from STCP, retrans queue hinting */
         struct sk_buff* lost_skb_hint;
 
@@ -341,10 +343,12 @@ struct tcp_sock {
         struct sk_buff *forward_skb_hint;
         struct sk_buff *fastpath_skb_hint;
 
-        int     fastpath_cnt_hint;
+        int     fastpath_cnt_hint;      /* Lags behind by current skb's pcount
+                                         * compared to respective fackets_out */
         int     lost_cnt_hint;
         int     retransmit_cnt_hint;
-        int     forward_cnt_hint;
+
+        u32     lost_retrans_low;       /* Sent seq after any rxmit (lowest) */
 
         u16     advmss;         /* Advertised MSS                       */
         u16     prior_ssthresh; /* ssthresh saved at recovery start     */