xpp r5151:

  * xpd_pri: Basically ready.
  * PCM synchronization changes:
    - Each Astribank unit ticks independently. Each with its own PLL.
    - HOST synchronization is gone. Loading of xpp will no longer cause
      useless 250 ticks per second if you have no Astribank.
    - Synchronization from the zaptel sync master requires setting
      ZAPTEL as sync source (xpp_sync ZAPTEL).
  * rx_tasklet is now a parameter of the module xpp, rather than of xpp_usb.
  * New FPGA firmware: 5128 (1151) / 5122 (1141, 1131):
    - Fixes synchronization issues.
    - PRI module: E1 should now work.
  * perl module and utilities:
    - Modules no longer magically scan system on initialization.
    - Scanning is by calling explicit methods.
    - "Serial" has been renamed "Label". It is basically unique, but 
      should be modifieble.
    - Some basic documentation of zaptel perl modules.
  * Default sort order of zt_registration is back to SORT_CONNCTOR.
  * zt_registration proc file now shows the number of span registered to 
    if registered. Try: grep . /proc/xpp/XBUS-*/XPD-*/zt_registration
  * genzaptelconf: Allow using a custom command instead of
    /etc/init.d/asterisk to start/stop asterisk.
  * Fixed the typo "Slagish".


git-svn-id: http://svn.digium.com/svn/zaptel/branches/1.2@3506 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 34 insertions, 0 deletions

diff --git a/xpp/xframe_queue.h b/xpp/xframe_queue.h
new file mode 100644
index 0000000..5612d65
--- /dev/null
+++ b/xpp/xframe_queue.h
@@ -0,0 +1,34 @@
+#ifndef	XFRAME_QUEUE_H
+#define	XFRAME_QUEUE_H
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include "xdefs.h"
+
+#define	XFRAME_QUEUE_MARGIN	10
+
+struct xframe_queue {
+	struct list_head	head;
+	unsigned int		count;
+	unsigned int		max_count;
+	unsigned int		steady_state_count;
+	spinlock_t		lock;
+	const char		*name;
+	void			*priv;
+	/* statistics */
+	unsigned int		worst_count;
+	unsigned int		overflows;
+	unsigned long		worst_lag_usec;	/* since xframe creation */
+};
+
+void xframe_queue_init(struct xframe_queue *q,
+	unsigned int steady_state_count, unsigned int max_count,
+	const char *name, void *priv);
+__must_check bool xframe_enqueue(struct xframe_queue *q, xframe_t *xframe);
+__must_check xframe_t *xframe_dequeue(struct xframe_queue *q);
+void xframe_queue_clearstats(struct xframe_queue *q);
+void xframe_queue_disable(struct xframe_queue *q);
+void xframe_queue_clear(struct xframe_queue *q);
+uint xframe_queue_count(struct xframe_queue *q);
+
+#endif	/* XFRAME_QUEUE_ */