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Add silly fake MDL error Z for kicking L2 to reactivate if a DISC or DM is received in proper states on PTP links.

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git-svn-id: https://origsvn.digium.com/svn/libpri/branches/1.4@1878 2fbb986a-6c06-0410-b554-c9c1f0a7f128
This commit is contained in:
Matthew Fredrickson
2010-08-23 22:13:44 +00:00
parent b2e28bd1e4
commit b83fc0c33f
1 changed files with 14 additions and 0 deletions
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14
q921.c
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@@ -61,6 +61,7 @@ static void q921_dump_pri(struct pri *ctrl, char direction_tag);
static void q921_establish_data_link(struct pri *ctrl);
static void q921_mdl_error(struct pri *ctrl, char error);
static void q921_mdl_remove(struct pri *ctrl);
static void q921_restart_ptp_link_if_needed(struct pri *ctrl);
/*!
* \internal
@@ -1168,6 +1169,7 @@ static pri_event *q921_disc_rx(struct pri *ctrl, q921_h *h)
if (ctrl->q921_state == Q921_MULTI_FRAME_ESTABLISHED)
stop_t203(ctrl);
q921_setstate(ctrl, Q921_TEI_ASSIGNED);
q921_restart_ptp_link_if_needed(ctrl);
break;
default:
pri_error(ctrl, "Don't know what to do with DISC in state %d(%s)\n",
@@ -1284,6 +1286,10 @@ static int q921_mdl_handle_ptp_error(struct pri *ctrl, char error)
/* This is where we act a bit like L3 instead of L2, since we've got an L3 that depends on us
* keeping L2 automatically alive and happy for point to point links */
switch (error) {
case 'Z':
/* This is a special MDL error that actually isn't a spec error, but just so we
* have an asynchronous context from the state machine to kick a PTP link back
* up after being requested to drop politely (using DISC or DM) */
case 'G':
/* We pick it back up and put it back together for this case */
q921_discard_iqueue(ctrl);
@@ -1304,6 +1310,13 @@ static int q921_mdl_handle_ptp_error(struct pri *ctrl, char error)
return handled;
}
static void q921_restart_ptp_link_if_needed(struct pri *ctrl)
{
if (PTP_MODE(ctrl) && ctrl->mdl_error == 0) {
q921_mdl_error(ctrl, 'Z');
}
}
static void q921_mdl_handle_error(struct pri *ctrl, char error, int errored_state)
{
int handled = 0;
@@ -1816,6 +1829,7 @@ static pri_event *q921_dm_rx(struct pri *ctrl, q921_h *h)
q931_dl_indication(ctrl, PRI_EVENT_DCHAN_DOWN);
stop_t200(ctrl);
q921_setstate(ctrl, Q921_TEI_ASSIGNED);
q921_restart_ptp_link_if_needed(ctrl);
break;
case Q921_AWAITING_RELEASE:
if (!h->u.p_f)