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Diffstat (limited to 'net/sctp/ulpqueue.c')
-rw-r--r--net/sctp/ulpqueue.c43
1 files changed, 30 insertions, 13 deletions
diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c
index c25caefa3bc..5061a26c502 100644
--- a/net/sctp/ulpqueue.c
+++ b/net/sctp/ulpqueue.c
@@ -1,4 +1,4 @@
-/* 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.
@@ -8,13 +8,13 @@
*
* This abstraction carries sctp events to the ULP (sockets).
*
- * 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.
@@ -283,7 +283,7 @@ out_free:
/* 2nd Level Abstractions */
/* Helper function to store chunks that need to be reassembled. */
-static inline void sctp_ulpq_store_reasm(struct sctp_ulpq *ulpq,
+static void sctp_ulpq_store_reasm(struct sctp_ulpq *ulpq,
struct sctp_ulpevent *event)
{
struct sk_buff *pos;
@@ -405,7 +405,7 @@ static struct sctp_ulpevent *sctp_make_reassembled_event(struct sk_buff_head *qu
/* Helper function to check if an incoming chunk has filled up the last
* missing fragment in a SCTP datagram and return the corresponding event.
*/
-static inline struct sctp_ulpevent *sctp_ulpq_retrieve_reassembled(struct sctp_ulpq *ulpq)
+static struct sctp_ulpevent *sctp_ulpq_retrieve_reassembled(struct sctp_ulpq *ulpq)
{
struct sk_buff *pos;
struct sctp_ulpevent *cevent;
@@ -512,7 +512,7 @@ found:
}
/* Retrieve the next set of fragments of a partial message. */
-static inline struct sctp_ulpevent *sctp_ulpq_retrieve_partial(struct sctp_ulpq *ulpq)
+static struct sctp_ulpevent *sctp_ulpq_retrieve_partial(struct sctp_ulpq *ulpq)
{
struct sk_buff *pos, *last_frag, *first_frag;
struct sctp_ulpevent *cevent;
@@ -606,7 +606,7 @@ static struct sctp_ulpevent *sctp_ulpq_reasm(struct sctp_ulpq *ulpq,
}
/* Retrieve the first part (sequential fragments) for partial delivery. */
-static inline struct sctp_ulpevent *sctp_ulpq_retrieve_first(struct sctp_ulpq *ulpq)
+static struct sctp_ulpevent *sctp_ulpq_retrieve_first(struct sctp_ulpq *ulpq)
{
struct sk_buff *pos, *last_frag, *first_frag;
struct sctp_ulpevent *cevent;
@@ -735,7 +735,7 @@ static void sctp_ulpq_reasm_drain(struct sctp_ulpq *ulpq)
/* Helper function to gather skbs that have possibly become
* ordered by an an incoming chunk.
*/
-static inline void sctp_ulpq_retrieve_ordered(struct sctp_ulpq *ulpq,
+static void sctp_ulpq_retrieve_ordered(struct sctp_ulpq *ulpq,
struct sctp_ulpevent *event)
{
struct sk_buff_head *event_list;
@@ -779,7 +779,7 @@ static inline void sctp_ulpq_retrieve_ordered(struct sctp_ulpq *ulpq,
}
/* Helper function to store chunks needing ordering. */
-static inline void sctp_ulpq_store_ordered(struct sctp_ulpq *ulpq,
+static void sctp_ulpq_store_ordered(struct sctp_ulpq *ulpq,
struct sctp_ulpevent *event)
{
struct sk_buff *pos;
@@ -867,13 +867,14 @@ static struct sctp_ulpevent *sctp_ulpq_order(struct sctp_ulpq *ulpq,
/* Helper function to gather skbs that have possibly become
* ordered by forward tsn skipping their dependencies.
*/
-static inline void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
+static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
{
struct sk_buff *pos, *tmp;
struct sctp_ulpevent *cevent;
struct sctp_ulpevent *event;
struct sctp_stream *in;
struct sk_buff_head temp;
+ struct sk_buff_head *lobby = &ulpq->lobby;
__u16 csid, cssn;
in = &ulpq->asoc->ssnmap->in;
@@ -881,7 +882,7 @@ static inline void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
/* We are holding the chunks by stream, by SSN. */
skb_queue_head_init(&temp);
event = NULL;
- sctp_skb_for_each(pos, &ulpq->lobby, tmp) {
+ sctp_skb_for_each(pos, lobby, tmp) {
cevent = (struct sctp_ulpevent *) pos->cb;
csid = cevent->stream;
cssn = cevent->ssn;
@@ -895,10 +896,10 @@ static inline void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
continue;
/* see if this ssn has been marked by skipping */
- if (!SSN_lte(cssn, sctp_ssn_peek(in, csid)))
+ if (!SSN_lt(cssn, sctp_ssn_peek(in, csid)))
break;
- __skb_unlink(pos, &ulpq->lobby);
+ __skb_unlink(pos, lobby);
if (!event)
/* Create a temporary list to collect chunks on. */
event = sctp_skb2event(pos);
@@ -907,6 +908,22 @@ static inline void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
__skb_queue_tail(&temp, pos);
}
+ /* If we didn't reap any data, see if the next expected SSN
+ * is next on the queue and if so, use that.
+ */
+ if (event == NULL && pos != (struct sk_buff *)lobby) {
+ cevent = (struct sctp_ulpevent *) pos->cb;
+ csid = cevent->stream;
+ cssn = cevent->ssn;
+
+ if (csid == sid && cssn == sctp_ssn_peek(in, csid)) {
+ sctp_ssn_next(in, csid);
+ __skb_unlink(pos, lobby);
+ __skb_queue_tail(&temp, pos);
+ event = sctp_skb2event(pos);
+ }
+ }
+
/* Send event to the ULP. 'event' is the sctp_ulpevent for
* very first SKB on the 'temp' list.
*/