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tipc: Flush unsent broadcast messages when contact with last node is lost 

Adds code to release any unsent broadcast messages in the broadcast link
transmit queue if TIPC loses contact with its only neighboring node.
Previously, a broadcast link that was in the congested state would hold
on to the unsent messages, even though the messages were now undeliverable.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
This commit is contained in:
Allan Stephens 2011-10-24 14:59:20 -04:00 committed by Paul Gortmaker
parent 9157bafb44
commit 10745cd599
1 changed files with 11 additions and 1 deletions
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12
net/tipc/bcast.c
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@ -252,7 +252,17 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
while (crs && less_eq(buf_seqno(crs), acked)) {
next = crs->next;
bcbuf_decr_acks(crs);
if (crs != bcl->next_out)
bcbuf_decr_acks(crs);
else if (bclink->bcast_nodes.count)
break;
else {
bcbuf_set_acks(crs, 0);
bcl->next_out = next;
bclink_set_last_sent();
}
if (bcbuf_acks(crs) == 0) {
bcl->first_out = next;
bcl->out_queue_size--;