tree 23d2c82c20fe92a1b438df111349c2390f4c60db
parent 849d0a83e8598e0f21a3e9c5438c222d8ab417eb
author Jacob Erlbeck <jerlbeck@sysmocom.de> 1419011405 +0100
committer Holger Hans Peter Freyther <holger@moiji-mobile.com> 1421600336 +0100

gprs: Avoid sending stale GSUP requests after reconnect

Currently, messages are added to the tx queue even if the connection
is down for some reason and all of these messages are eventually sent
after a re-connect.  The MS has probably sent several Attach Requests
while the connection was down and will continue doing so. Therefore
these stored messages could be dropped.

This patch clears the queue before re-connecting and also extends
gprs_gsup_client_send to return immediately, when the connection is
not established instead of calling ipa_client_conn_send.

Sponsored-by: On-Waves ehf

[hfreyther: Replaced
	while (!llist_empty(&gsupc->link->tx_queue))
		llist_del(gsupc->link->tx_queue.next);
with new libosmo-abis API]