[IPV4]: Add 'rtable' field in struct sk_buff to alias 'dst' and avoid casts

[linux-2.6] / net / sctp / outqueue.c

diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index fa76f235169bfac3cedcb8517d4c62b0cd8daa5c..fd4deefab3cfe5ece6dec9c05e85d5fb8bdc69d6 100644 (file)
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -1,21 +1,21 @@
-/* SCTP kernel reference Implementation
+/* SCTP kernel implementation
  * (C) Copyright IBM Corp. 2001, 2004
  * Copyright (c) 1999-2000 Cisco, Inc.
  * Copyright (c) 1999-2001 Motorola, Inc.
  * Copyright (c) 2001-2003 Intel Corp.
  *
- * This file is part of the SCTP kernel reference Implementation
+ * This file is part of the SCTP kernel implementation
  *
  * These functions implement the sctp_outq class.   The outqueue handles
  * bundling and queueing of outgoing SCTP chunks.
  *
- * The SCTP reference implementation is free software;
+ * This SCTP implementation is free software;
  * you can redistribute it and/or modify it under the terms of
  * the GNU General Public License as published by
  * the Free Software Foundation; either version 2, or (at your option)
  * any later version.
  *
- * The SCTP reference implementation is distributed in the hope that it
+ * This SCTP implementation is distributed in the hope that it
  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  *                 ************************
  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
@@ -494,6 +494,8 @@ void sctp_retransmit(struct sctp_outq *q, struct sctp_transport *transport,
                 */
                if (transport == transport->asoc->peer.retran_path)
                        sctp_assoc_update_retran_path(transport->asoc);
+               transport->asoc->rtx_data_chunks +=
+                       transport->asoc->unack_data;
                break;
        case SCTP_RTXR_FAST_RTX:
                SCTP_INC_STATS(SCTP_MIB_FAST_RETRANSMITS);
@@ -504,6 +506,7 @@ void sctp_retransmit(struct sctp_outq *q, struct sctp_transport *transport,
                break;
        case SCTP_RTXR_T1_RTX:
                SCTP_INC_STATS(SCTP_MIB_T1_RETRANSMITS);
+               transport->asoc->init_retries++;
                break;
        default:
                BUG();
@@ -716,7 +719,29 @@ int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                new_transport = chunk->transport;
 
                if (!new_transport) {
-                       new_transport = asoc->peer.active_path;
+                       /*
+                        * If we have a prior transport pointer, see if
+                        * the destination address of the chunk
+                        * matches the destination address of the
+                        * current transport.  If not a match, then
+                        * try to look up the transport with a given
+                        * destination address.  We do this because
+                        * after processing ASCONFs, we may have new
+                        * transports created.
+                        */
+                       if (transport &&
+                           sctp_cmp_addr_exact(&chunk->dest,
+                                               &transport->ipaddr))
+                                       new_transport = transport;
+                       else
+                               new_transport = sctp_assoc_lookup_paddr(asoc,
+                                                               &chunk->dest);
+
+                       /* if we still don't have a new transport, then
+                        * use the current active path.
+                        */
+                       if (!new_transport)
+                               new_transport = asoc->peer.active_path;
                } else if ((new_transport->state == SCTP_INACTIVE) ||
                           (new_transport->state == SCTP_UNCONFIRMED)) {
                        /* If the chunk is Heartbeat or Heartbeat Ack,
@@ -729,9 +754,12 @@ int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                         * address of the IP datagram containing the
                         * HEARTBEAT chunk to which this ack is responding.
                         * ...
+                        *
+                        * ASCONF_ACKs also must be sent to the source.
                         */
                        if (chunk->chunk_hdr->type != SCTP_CID_HEARTBEAT &&
-                           chunk->chunk_hdr->type != SCTP_CID_HEARTBEAT_ACK)
+                           chunk->chunk_hdr->type != SCTP_CID_HEARTBEAT_ACK &&
+                           chunk->chunk_hdr->type != SCTP_CID_ASCONF_ACK)
                                new_transport = asoc->peer.active_path;
                }
 
@@ -1154,8 +1182,10 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_sackhdr *sack)
                tchunk = list_entry(lchunk, struct sctp_chunk,
                                    transmitted_list);
                tsn = ntohl(tchunk->subh.data_hdr->tsn);
-               if (TSN_lte(tsn, ctsn))
+               if (TSN_lte(tsn, ctsn)) {
+                       list_del_init(&tchunk->transmitted_list);
                        sctp_chunk_free(tchunk);
+               }
        }
 
        /* ii) Set rwnd equal to the newly received a_rwnd minus the