[CCID] Only call the HC insert_options methods when requested

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

3 files changed, 14 insertions, 4 deletions

diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index 007c290f74d4..5e0af0d08a93 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -433,6 +433,8 @@ struct dccp_sock {
         struct ccid                     *dccps_hc_tx_ccid;
         struct dccp_options_received    dccps_options_received;
         enum dccp_role                  dccps_role:2;
+        __u8                            dccps_hc_rx_insert_options:1;
+        __u8                            dccps_hc_tx_insert_options:1;
 };
  
 static inline struct dccp_sock *dccp_sk(const struct sock *sk)
diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c
index ae0500c79d07..37fd9eb8daaf 100644
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -358,10 +358,12 @@ static int ccid3_hc_tx_send_packet(struct sock *sk,
         }
 
         /* Can we send? if so add options and add to packet history */
-        if (rc == 0)
+        if (rc == 0) {
+                dp->dccps_hc_tx_insert_options = 1;
                 new_packet->dccphtx_ccval =
                         DCCP_SKB_CB(skb)->dccpd_ccval =
                                 hctx->ccid3hctx_last_win_count;
+        }
 out:
         return rc;
 }
@@ -811,6 +813,7 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk)
                 hcrx->ccid3hcrx_pinv = ~0;
         else
                 hcrx->ccid3hcrx_pinv = 1000000 / hcrx->ccid3hcrx_p;
+        dp->dccps_hc_rx_insert_options = 1;
         dccp_send_ack(sk);
 }
 
diff --git a/net/dccp/options.c b/net/dccp/options.c
index 382c5894acb2..7ad2f4266ff9 100644
--- a/net/dccp/options.c
+++ b/net/dccp/options.c
@@ -505,13 +505,18 @@ void dccp_insert_options(struct sock *sk, struct sk_buff *skb)
                     (dp->dccps_hc_rx_ackpkts->dccpap_buf_ackno !=
                      DCCP_MAX_SEQNO + 1))
                         dccp_insert_option_ack_vector(sk, skb);
-
                 if (dp->dccps_timestamp_echo != 0)
                         dccp_insert_option_timestamp_echo(sk, skb);
         }
 
-        ccid_hc_rx_insert_options(dp->dccps_hc_rx_ccid, sk, skb);
-        ccid_hc_tx_insert_options(dp->dccps_hc_tx_ccid, sk, skb);
+        if (dp->dccps_hc_rx_insert_options) {
+                ccid_hc_rx_insert_options(dp->dccps_hc_rx_ccid, sk, skb);
+                dp->dccps_hc_rx_insert_options = 0;
+        }
+        if (dp->dccps_hc_tx_insert_options) {
+                ccid_hc_tx_insert_options(dp->dccps_hc_tx_ccid, sk, skb);
+                dp->dccps_hc_tx_insert_options = 0;
+        }
 
         /* XXX: insert other options when appropriate */