tipc: remove protocol message queue

TIPC protocol message queue is intended to save one protocol message
when bearer is congested so that the message stored in the queue can
be immediately transmitted when bearer congestion is released. However,
as now the protocol queue has no mission any more with the removal of
bearer congestion mechanism, it should be removed.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 2 deletions

diff --git a/net/tipc/link.h b/net/tipc/link.h
index f463e7be801c..fb3f99b6e928 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -130,7 +130,6 @@ struct tipc_stats {
  * @oldest_deferred_in: ptr to first inbound message in queue
  * @newest_deferred_in: ptr to last inbound message in queue
  * @unacked_window: # of inbound messages rx'd without ack'ing back to peer
- * @proto_msg_queue: ptr to (single) outbound control message
  * @retransm_queue_size: number of messages to retransmit
  * @retransm_queue_head: sequence number of first message to retransmit
  * @next_out: ptr to first unsent outbound message in queue
@@ -191,7 +190,6 @@ struct tipc_link {
         u32 unacked_window;
 
         /* Congestion handling */
-        struct sk_buff *proto_msg_queue;
         u32 retransm_queue_size;
         u32 retransm_queue_head;
         struct sk_buff *next_out;