From bc6fecd4098df2d21b056486e5b418c84be95032 Mon Sep 17 00:00:00 2001
From: Ying Xue <ying.xue@windriver.com>
Date: Wed, 26 Nov 2014 11:41:53 +0800
Subject: tipc: use generic SKB list APIs to manage deferred queue of link
Use standard SKB list APIs associated with struct sk_buff_head to
manage link's deferred queue, simplifying relevant code.
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>
---
net/tipc/bcast.c | 20 ++++++++------------
1 file changed, 8 insertions(+), 12 deletions(-)
(limited to 'net/tipc/bcast.c')
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index 4a1a3c8627d0..7b238b1f339b 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -352,6 +352,8 @@ void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent)
buf = tipc_buf_acquire(INT_H_SIZE);
if (buf) {
struct tipc_msg *msg = buf_msg(buf);
+ struct sk_buff *skb = skb_peek(&n_ptr->bclink.deferred_queue);
+ u32 to = skb ? buf_seqno(skb) - 1 : n_ptr->bclink.last_sent;
tipc_msg_init(msg, BCAST_PROTOCOL, STATE_MSG,
INT_H_SIZE, n_ptr->addr);
@@ -359,9 +361,7 @@ void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent)
msg_set_mc_netid(msg, tipc_net_id);
msg_set_bcast_ack(msg, n_ptr->bclink.last_in);
msg_set_bcgap_after(msg, n_ptr->bclink.last_in);
- msg_set_bcgap_to(msg, n_ptr->bclink.deferred_head
- ? buf_seqno(n_ptr->bclink.deferred_head) - 1
- : n_ptr->bclink.last_sent);
+ msg_set_bcgap_to(msg, to);
tipc_bclink_lock();
tipc_bearer_send(MAX_BEARERS, buf, NULL);
@@ -574,31 +574,26 @@ receive:
if (node->bclink.last_in == node->bclink.last_sent)
goto unlock;
- if (!node->bclink.deferred_head) {
+ if (skb_queue_empty(&node->bclink.deferred_queue)) {
node->bclink.oos_state = 1;
goto unlock;
}
- msg = buf_msg(node->bclink.deferred_head);
+ msg = buf_msg(skb_peek(&node->bclink.deferred_queue));
seqno = msg_seqno(msg);
next_in = mod(next_in + 1);
if (seqno != next_in)
goto unlock;
/* Take in-sequence message from deferred queue & deliver it */
- buf = node->bclink.deferred_head;
- node->bclink.deferred_head = buf->next;
- buf->next = NULL;
- node->bclink.deferred_size--;
+ buf = __skb_dequeue(&node->bclink.deferred_queue);
goto receive;
}
/* Handle out-of-sequence broadcast message */
if (less(next_in, seqno)) {
- deferred = tipc_link_defer_pkt(&node->bclink.deferred_head,
- &node->bclink.deferred_tail,
+ deferred = tipc_link_defer_pkt(&node->bclink.deferred_queue,
buf);
- node->bclink.deferred_size += deferred;
bclink_update_last_sent(node, seqno);
buf = NULL;
}
@@ -954,6 +949,7 @@ int tipc_bclink_init(void)
spin_lock_init(&bclink->lock);
__skb_queue_head_init(&bcl->outqueue);
+ __skb_queue_head_init(&bcl->deferred_queue);
__skb_queue_head_init(&bcl->waiting_sks);
bcl->next_out_no = 1;
spin_lock_init(&bclink->node.lock);
--
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