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

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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--;