[DCCP]: Only deliver to the CCID rx side in charge

This is an optimisation to reduce CPU load. The received feedback is now
only directed to the active CCID component, without requiring processing
also by the inactive one.

As a consequence, a similar test in ccid3.c is now redundant and is
also removed.

Justification:

 Currently DCCP works as a unidirectional service, i.e. a listening server
 is not at the same time a connecting client.
 As far as I can see, several modifications are necessary until that
 becomes possible.
 At the present time, received feedback is both fed to the rx/tx CCID
 modules. In unidirectional service, only one of these is active at any
 one time.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c
index 820bc25e14dc..936704d1b77e 100644
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -540,11 +540,11 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
                                    jiffies + usecs_to_jiffies(t_nfb));
 
                 /* set idle flag */
-                hctx->ccid3hctx_idle = 1;   
+                hctx->ccid3hctx_idle = 1;
                 break;
         case TFRC_SSTATE_NO_SENT:
-                if (dccp_sk(sk)->dccps_role == DCCP_ROLE_CLIENT)
-                        DCCP_WARN("Illegal ACK received - no packet sent\n");
+                /* XXX when implementing bidirectional rx/tx check this again */
+                DCCP_WARN("Illegal ACK received - no packet sent\n");
                 /* fall through */
         case TFRC_SSTATE_TERM:          /* ignore feedback when closing */
                 break;