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-rw-r--r--net/sctp/outqueue.c42
1 files changed, 7 insertions, 35 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index b491a1aac3e4..5d057178ce0c 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -62,7 +62,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
struct list_head *transmitted_queue,
struct sctp_transport *transport,
struct sctp_sackhdr *sack,
- __u32 highest_new_tsn);
+ __u32 *highest_new_tsn);
static void sctp_mark_missing(struct sctp_outq *q,
struct list_head *transmitted_queue,
@@ -1109,32 +1109,6 @@ static void sctp_sack_update_unack_data(struct sctp_association *assoc,
assoc->unack_data = unack_data;
}
-/* Return the highest new tsn that is acknowledged by the given SACK chunk. */
-static __u32 sctp_highest_new_tsn(struct sctp_sackhdr *sack,
- struct sctp_association *asoc)
-{
- struct sctp_transport *transport;
- struct sctp_chunk *chunk;
- __u32 highest_new_tsn, tsn;
- struct list_head *transport_list = &asoc->peer.transport_addr_list;
-
- highest_new_tsn = ntohl(sack->cum_tsn_ack);
-
- list_for_each_entry(transport, transport_list, transports) {
- list_for_each_entry(chunk, &transport->transmitted,
- transmitted_list) {
- tsn = ntohl(chunk->subh.data_hdr->tsn);
-
- if (!chunk->tsn_gap_acked &&
- TSN_lt(highest_new_tsn, tsn) &&
- sctp_acked(sack, tsn))
- highest_new_tsn = tsn;
- }
- }
-
- return highest_new_tsn;
-}
-
/* This is where we REALLY process a SACK.
*
* Process the SACK against the outqueue. Mostly, this just frees
@@ -1203,18 +1177,15 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_sackhdr *sack)
if (gap_ack_blocks)
highest_tsn += ntohs(frags[gap_ack_blocks - 1].gab.end);
- if (TSN_lt(asoc->highest_sacked, highest_tsn)) {
- highest_new_tsn = highest_tsn;
+ if (TSN_lt(asoc->highest_sacked, highest_tsn))
asoc->highest_sacked = highest_tsn;
- } else {
- highest_new_tsn = sctp_highest_new_tsn(sack, asoc);
- }
+ highest_new_tsn = sack_ctsn;
/* Run through the retransmit queue. Credit bytes received
* and free those chunks that we can.
*/
- sctp_check_transmitted(q, &q->retransmit, NULL, sack, highest_new_tsn);
+ sctp_check_transmitted(q, &q->retransmit, NULL, sack, &highest_new_tsn);
/* Run through the transmitted queue.
* Credit bytes received and free those chunks which we can.
@@ -1223,7 +1194,7 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_sackhdr *sack)
*/
list_for_each_entry(transport, transport_list, transports) {
sctp_check_transmitted(q, &transport->transmitted,
- transport, sack, highest_new_tsn);
+ transport, sack, &highest_new_tsn);
/*
* SFR-CACC algorithm:
* C) Let count_of_newacks be the number of
@@ -1331,7 +1302,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
struct list_head *transmitted_queue,
struct sctp_transport *transport,
struct sctp_sackhdr *sack,
- __u32 highest_new_tsn_in_sack)
+ __u32 *highest_new_tsn_in_sack)
{
struct list_head *lchunk;
struct sctp_chunk *tchunk;
@@ -1419,6 +1390,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
*/
if (!tchunk->tsn_gap_acked) {
tchunk->tsn_gap_acked = 1;
+ *highest_new_tsn_in_sack = tsn;
bytes_acked += sctp_data_size(tchunk);
if (!tchunk->transport)
migrate_bytes += sctp_data_size(tchunk);