X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=net%2Fsctp%2Foutput.c;h=f875fc3ced5498f012996eaf7d39d4039c149642;hb=88c7664f13bd1a36acb8566b93892a4c58759ac6;hp=cdc5a393676657691a2421b573235fde8318b0f8;hpb=075395d228641646159dae3dd170fa3fc6ff477a;p=linux-2.6-omap-h63xx.git

diff --git a/net/sctp/output.c b/net/sctp/output.c
index cdc5a393676..f875fc3ced5 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -85,8 +85,8 @@ struct sctp_packet *sctp_packet_config(struct sctp_packet *packet,
 		chunk = sctp_get_ecne_prepend(packet->transport->asoc);
 
 		/* If there a is a prepend chunk stick it on the list before
-	 	 * any other chunks get appended.
-	 	 */
+		 * any other chunks get appended.
+		 */
 		if (chunk)
 			sctp_packet_append_chunk(packet, chunk);
 	}
@@ -110,8 +110,8 @@ struct sctp_packet *sctp_packet_init(struct sctp_packet *packet,
 	packet->destination_port = dport;
 	INIT_LIST_HEAD(&packet->chunk_list);
 	if (asoc) {
-		struct sctp_sock *sp = sctp_sk(asoc->base.sk);	
-		overhead = sp->pf->af->net_header_len; 
+		struct sctp_sock *sp = sctp_sk(asoc->base.sk);
+		overhead = sp->pf->af->net_header_len;
 	} else {
 		overhead = sizeof(struct ipv6hdr);
 	}
@@ -442,7 +442,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
 		 * acknowledged or have failed.
 		 */
 		if (!sctp_chunk_is_data(chunk))
-    			sctp_chunk_free(chunk);
+			sctp_chunk_free(chunk);
 	}
 
 	/* Perform final transformation on checksum. */
@@ -528,7 +528,7 @@ err:
 	list_for_each_entry_safe(chunk, tmp, &packet->chunk_list, list) {
 		list_del_init(&chunk->list);
 		if (!sctp_chunk_is_data(chunk))
-    			sctp_chunk_free(chunk);
+			sctp_chunk_free(chunk);
 	}
 	goto out;
 nomem:
@@ -633,7 +633,7 @@ static sctp_xmit_t sctp_packet_append_data(struct sctp_packet *packet,
 		 * data will fit or delay in hopes of bundling a full
 		 * sized packet.
 		 */
-		if (len < asoc->pathmtu - packet->overhead) {
+		if (len < asoc->frag_point) {
 			retval = SCTP_XMIT_NAGLE_DELAY;
 			goto finish;
 		}
@@ -645,7 +645,13 @@ static sctp_xmit_t sctp_packet_append_data(struct sctp_packet *packet,
 	/* Keep track of how many bytes are in flight to the receiver. */
 	asoc->outqueue.outstanding_bytes += datasize;
 
-	/* Update our view of the receiver's rwnd. */
+	/* Update our view of the receiver's rwnd. Include sk_buff overhead
+	 * while updating peer.rwnd so that it reduces the chances of a
+	 * receiver running out of receive buffer space even when receive
+	 * window is still open. This can happen when a sender is sending
+	 * sending small messages.
+	 */
+	datasize += sizeof(struct sk_buff);
 	if (datasize < rwnd)
 		rwnd -= datasize;
 	else