[DCCP] ccid3: Resolve small FIXME

This considers the  case - ACK received while no packet has been sent
so far. Resolved by printing a (rate-limited) warning message.

Further removes an unnecessary BUG_ON in ccid3_hc_tx_packet_recv,
received feedback on a terminating connection is simply ignored.

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

diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c
index 58f7cac..6777a7f 100644 (file)
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -413,9 +413,6 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
        pinv = opt_recv->ccid3or_loss_event_rate;
 
        switch (hctx->ccid3hctx_state) {
-       case TFRC_SSTATE_NO_SENT:
-               /* FIXME: what to do here? */
-               return;
        case TFRC_SSTATE_NO_FBACK:
        case TFRC_SSTATE_FBACK:
                /* Calculate new round trip sample by
@@ -521,8 +518,10 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
                /* set idle flag */
                hctx->ccid3hctx_idle = 1;   
                break;
-       case TFRC_SSTATE_TERM:
-               DCCP_BUG("Illegal %s state TERM, sk=%p", dccp_role(sk), sk);
+       case TFRC_SSTATE_NO_SENT:
+               DCCP_WARN("Illegal ACK received - no packet has been sent\n");
+               /* fall through */
+       case TFRC_SSTATE_TERM:          /* ignore feedback when closing */
                break;
        }
 }