2 files changed, 3 insertions, 7 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 5ecd7aa25979..cd39d1d02dc3 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -4248,8 +4248,7 @@ static void tcp_sack_remove(struct tcp_sock *tp)
                 this_sack++;
                 sp++;
         }
-        if (num_sacks != tp->rx_opt.num_sacks)
-                tp->rx_opt.num_sacks = num_sacks;
+        tp->rx_opt.num_sacks = num_sacks;
 }
 
 /* This one checks to see if we can put data from the
@@ -4325,8 +4324,7 @@ static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
 
         TCP_ECN_accept_cwr(tp, skb);
 
-        if (tp->rx_opt.dsack)
-                tp->rx_opt.dsack = 0;
+        tp->rx_opt.dsack = 0;
 
         /*  Queue data for delivery to the user.
          *  Packets in sequence go to the receive queue.
@@ -4445,7 +4443,6 @@ drop:
                 /* Initial out of order segment, build 1 SACK. */
                 if (tcp_is_sack(tp)) {
                         tp->rx_opt.num_sacks = 1;
-                        tp->rx_opt.dsack     = 0;
                         tp->selective_acks[0].start_seq = TCP_SKB_CB(skb)->seq;
                         tp->selective_acks[0].end_seq =
                                                 TCP_SKB_CB(skb)->end_seq;
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index eb285befdf3b..325658039139 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -441,8 +441,7 @@ static void tcp_options_write(__be32 *ptr, struct tcp_sock *tp,
                         *ptr++ = htonl(sp[this_sack].end_seq);
                 }
 
-                if (tp->rx_opt.dsack)
-                        tp->rx_opt.dsack = 0;
+                tp->rx_opt.dsack = 0;
         }
 }