[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / ozwpan / ozeltbuf.c

/* -----------------------------------------------------------------------------
 * Copyright (c) 2011 Ozmo Inc
 * Released under the GNU General Public License Version 2 (GPLv2).
 * -----------------------------------------------------------------------------
 */
#include <linux/init.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include "ozconfig.h"
#include "ozprotocol.h"
#include "ozeltbuf.h"
#include "ozpd.h"
#include "oztrace.h"
/*------------------------------------------------------------------------------
 */
#define OZ_ELT_INFO_MAGIC_USED	0x35791057
#define OZ_ELT_INFO_MAGIC_FREE	0x78940102
/*------------------------------------------------------------------------------
 * Context: softirq-serialized
 */
int oz_elt_buf_init(struct oz_elt_buf *buf)
{
	memset(buf, 0, sizeof(struct oz_elt_buf));
	INIT_LIST_HEAD(&buf->stream_list);
	INIT_LIST_HEAD(&buf->order_list);
	INIT_LIST_HEAD(&buf->isoc_list);
	buf->max_free_elts = 32;
	spin_lock_init(&buf->lock);
	return 0;
}
/*------------------------------------------------------------------------------
 * Context: softirq or process
 */
void oz_elt_buf_term(struct oz_elt_buf *buf)
{
	struct list_head *e;
	int i;
	/* Free any elements in the order or isoc lists. */
	for (i = 0; i < 2; i++) {
		struct list_head *list;
		if (i)
			list = &buf->order_list;
		else
			list = &buf->isoc_list;
		e = list->next;
		while (e != list) {
			struct oz_elt_info *ei =
				container_of(e, struct oz_elt_info, link_order);
			e = e->next;
			kfree(ei);
		}
	}
	/* Free any elelment in the pool. */
	while (buf->elt_pool) {
		struct oz_elt_info *ei =
			container_of(buf->elt_pool, struct oz_elt_info, link);
		buf->elt_pool = buf->elt_pool->next;
		kfree(ei);
	}
	buf->free_elts = 0;
}
/*------------------------------------------------------------------------------
 * Context: softirq or process
 */
struct oz_elt_info *oz_elt_info_alloc(struct oz_elt_buf *buf)
{
	struct oz_elt_info *ei = 0;
	spin_lock_bh(&buf->lock);
	if (buf->free_elts && buf->elt_pool) {
		ei = container_of(buf->elt_pool, struct oz_elt_info, link);
		buf->elt_pool = ei->link.next;
		buf->free_elts--;
		spin_unlock_bh(&buf->lock);
		if (ei->magic != OZ_ELT_INFO_MAGIC_FREE) {
			oz_trace("oz_elt_info_alloc: ei with bad magic: 0x%x\n",
				ei->magic);
		}
	} else {
		spin_unlock_bh(&buf->lock);
		ei = kmalloc(sizeof(struct oz_elt_info), GFP_ATOMIC);
	}
	if (ei) {
		ei->flags = 0;
		ei->app_id = 0;
		ei->callback = 0;
		ei->context = 0;
		ei->stream = 0;
		ei->magic = OZ_ELT_INFO_MAGIC_USED;
		INIT_LIST_HEAD(&ei->link);
		INIT_LIST_HEAD(&ei->link_order);
	}
	return ei;
}
/*------------------------------------------------------------------------------
 * Precondition: oz_elt_buf.lock must be held.
 * Context: softirq or process
 */
void oz_elt_info_free(struct oz_elt_buf *buf, struct oz_elt_info *ei)
{
	if (ei) {
		if (ei->magic == OZ_ELT_INFO_MAGIC_USED) {
			buf->free_elts++;
			ei->link.next = buf->elt_pool;
			buf->elt_pool = &ei->link;
			ei->magic = OZ_ELT_INFO_MAGIC_FREE;
		} else {
			oz_trace("oz_elt_info_free: bad magic ei: %p"
				" magic: 0x%x\n",
				ei, ei->magic);
		}
	}
}
/*------------------------------------------------------------------------------
 * Context: softirq
 */
void oz_elt_info_free_chain(struct oz_elt_buf *buf, struct list_head *list)
{
	struct list_head *e;
	e = list->next;
	spin_lock_bh(&buf->lock);
	while (e != list) {
		struct oz_elt_info *ei;
		ei = container_of(e, struct oz_elt_info, link);
		e = e->next;
		oz_elt_info_free(buf, ei);
	}
	spin_unlock_bh(&buf->lock);
}
/*------------------------------------------------------------------------------
 */
int oz_elt_stream_create(struct oz_elt_buf *buf, u8 id, int max_buf_count)
{
	struct oz_elt_stream *st;

	oz_trace("oz_elt_stream_create(0x%x)\n", id);

	st = kzalloc(sizeof(struct oz_elt_stream), GFP_ATOMIC | __GFP_ZERO);
	if (st == 0)
		return -ENOMEM;
	atomic_set(&st->ref_count, 1);
	st->id = id;
	st->max_buf_count = max_buf_count;
	INIT_LIST_HEAD(&st->elt_list);
	spin_lock_bh(&buf->lock);
	list_add_tail(&st->link, &buf->stream_list);
	spin_unlock_bh(&buf->lock);
	return 0;
}
/*------------------------------------------------------------------------------
 */
int oz_elt_stream_delete(struct oz_elt_buf *buf, u8 id)
{
	struct list_head *e;
	struct oz_elt_stream *st;
	oz_trace("oz_elt_stream_delete(0x%x)\n", id);
	spin_lock_bh(&buf->lock);
	e = buf->stream_list.next;
	while (e != &buf->stream_list) {
		st = container_of(e, struct oz_elt_stream, link);
		if (st->id == id) {
			list_del(e);
			break;
		}
		st = 0;
	}
	if (!st) {
		spin_unlock_bh(&buf->lock);
		return -1;
	}
	e = st->elt_list.next;
	while (e != &st->elt_list) {
		struct oz_elt_info *ei =
			container_of(e, struct oz_elt_info, link);
		e = e->next;
		list_del_init(&ei->link);
		list_del_init(&ei->link_order);
		st->buf_count -= ei->length;
		oz_trace2(OZ_TRACE_STREAM, "Stream down: %d  %d %d\n",
			st->buf_count,
			ei->length, atomic_read(&st->ref_count));
		oz_elt_stream_put(st);
		oz_elt_info_free(buf, ei);
	}
	spin_unlock_bh(&buf->lock);
	oz_elt_stream_put(st);
	return 0;
}
/*------------------------------------------------------------------------------
 */
void oz_elt_stream_get(struct oz_elt_stream *st)
{
	atomic_inc(&st->ref_count);
}
/*------------------------------------------------------------------------------
 */
void oz_elt_stream_put(struct oz_elt_stream *st)
{
	if (atomic_dec_and_test(&st->ref_count)) {
		oz_trace("Stream destroyed\n");
		kfree(st);
	}
}
/*------------------------------------------------------------------------------
 * Precondition: Element buffer lock must be held.
 * If this function fails the caller is responsible for deallocating the elt
 * info structure.
 */
int oz_queue_elt_info(struct oz_elt_buf *buf, u8 isoc, u8 id,
	struct oz_elt_info *ei)
{
	struct oz_elt_stream *st = 0;
	struct list_head *e;
	if (id) {
		list_for_each(e, &buf->stream_list) {
			st = container_of(e, struct oz_elt_stream, link);
			if (st->id == id)
				break;
		}
		if (e == &buf->stream_list) {
			/* Stream specified but stream not known so fail.
			 * Caller deallocates element info. */
			return -1;
		}
	}
	if (st) {
		/* If this is an ISOC fixed element that needs a frame number
		 * then insert that now. Earlier we stored the unit count in
		 * this field.
		 */
		struct oz_isoc_fixed *body = (struct oz_isoc_fixed *)
			&ei->data[sizeof(struct oz_elt)];
		if ((body->app_id == OZ_APPID_USB) && (body->type
			== OZ_USB_ENDPOINT_DATA) &&
			(body->format == OZ_DATA_F_ISOC_FIXED)) {
			u8 unit_count = body->frame_number;
			body->frame_number = st->frame_number;
			st->frame_number += unit_count;
		}
		/* Claim stream and update accounts */
		oz_elt_stream_get(st);
		ei->stream = st;
		st->buf_count += ei->length;
		/* Add to list in stream. */
		list_add_tail(&ei->link, &st->elt_list);
		oz_trace2(OZ_TRACE_STREAM, "Stream up: %d  %d\n",
			st->buf_count, ei->length);
		/* Check if we have too much buffered for this stream. If so
		 * start dropping elements until we are back in bounds.
		 */
		while ((st->buf_count > st->max_buf_count) &&
			!list_empty(&st->elt_list)) {
			struct oz_elt_info *ei2 =
				list_first_entry(&st->elt_list,
					struct oz_elt_info, link);
			list_del_init(&ei2->link);
			list_del_init(&ei2->link_order);
			st->buf_count -= ei2->length;
			oz_elt_info_free(buf, ei2);
			oz_elt_stream_put(st);
		}
	}
	list_add_tail(&ei->link_order, isoc ?
		&buf->isoc_list : &buf->order_list);
	return 0;
}
/*------------------------------------------------------------------------------
 */
int oz_select_elts_for_tx(struct oz_elt_buf *buf, u8 isoc, unsigned *len,
		unsigned max_len, struct list_head *list)
{
	int count = 0;
	struct list_head *e;
	struct list_head *el;
	struct oz_elt_info *ei;
	spin_lock_bh(&buf->lock);
	if (isoc)
		el = &buf->isoc_list;
	else
		el = &buf->order_list;
	e = el->next;
	while (e != el) {
		struct oz_app_hdr *app_hdr;
		ei = container_of(e, struct oz_elt_info, link_order);
		e = e->next;
		if ((*len + ei->length) <= max_len) {
			app_hdr = (struct oz_app_hdr *)
				&ei->data[sizeof(struct oz_elt)];
			app_hdr->elt_seq_num = buf->tx_seq_num[ei->app_id]++;
			if (buf->tx_seq_num[ei->app_id] == 0)
				buf->tx_seq_num[ei->app_id] = 1;
			*len += ei->length;
			list_del(&ei->link);
			list_del(&ei->link_order);
			if (ei->stream) {
				ei->stream->buf_count -= ei->length;
				oz_trace2(OZ_TRACE_STREAM,
					"Stream down: %d  %d\n",
					ei->stream->buf_count, ei->length);
				oz_elt_stream_put(ei->stream);
				ei->stream = 0;
			}
			INIT_LIST_HEAD(&ei->link_order);
			list_add_tail(&ei->link, list);
			count++;
		} else {
			break;
		}
	}
	spin_unlock_bh(&buf->lock);
	return count;
}
/*------------------------------------------------------------------------------
 */
int oz_are_elts_available(struct oz_elt_buf *buf)
{
	return buf->order_list.next != &buf->order_list;
}
/*------------------------------------------------------------------------------
 */
void oz_trim_elt_pool(struct oz_elt_buf *buf)
{
	struct list_head *free = 0;
	struct list_head *e;
	spin_lock_bh(&buf->lock);
	while (buf->free_elts > buf->max_free_elts) {
		e = buf->elt_pool;
		buf->elt_pool = e->next;
		e->next = free;
		free = e;
		buf->free_elts--;
	}
	spin_unlock_bh(&buf->lock);
	while (free) {
		struct oz_elt_info *ei =
			container_of(free, struct oz_elt_info, link);
		free = free->next;
		kfree(ei);
	}
}
Commit	Line	Data
bc3157dd CK	1	/* -----------------------------------------------------------------------------
	2	* Copyright (c) 2011 Ozmo Inc
	3	* Released under the GNU General Public License Version 2 (GPLv2).
	4	* -----------------------------------------------------------------------------
	5	*/
	6	#include <linux/init.h>
	7	#include <linux/module.h>
	8	#include <linux/netdevice.h>
	9	#include "ozconfig.h"
	10	#include "ozprotocol.h"
	11	#include "ozeltbuf.h"
	12	#include "ozpd.h"
	13	#include "oztrace.h"
bc3157dd CK	14	/*------------------------------------------------------------------------------
	15	*/
	16	#define OZ_ELT_INFO_MAGIC_USED 0x35791057
	17	#define OZ_ELT_INFO_MAGIC_FREE 0x78940102
	18	/*------------------------------------------------------------------------------
	19	* Context: softirq-serialized
	20	*/
	21	int oz_elt_buf_init(struct oz_elt_buf *buf)
	22	{
	23	memset(buf, 0, sizeof(struct oz_elt_buf));
	24	INIT_LIST_HEAD(&buf->stream_list);
	25	INIT_LIST_HEAD(&buf->order_list);
	26	INIT_LIST_HEAD(&buf->isoc_list);
	27	buf->max_free_elts = 32;
	28	spin_lock_init(&buf->lock);
	29	return 0;
	30	}
	31	/*------------------------------------------------------------------------------
	32	* Context: softirq or process
	33	*/
	34	void oz_elt_buf_term(struct oz_elt_buf *buf)
	35	{
	36	struct list_head *e;
	37	int i;
	38	/* Free any elements in the order or isoc lists. */
	39	for (i = 0; i < 2; i++) {
	40	struct list_head *list;
	41	if (i)
	42	list = &buf->order_list;
	43	else
	44	list = &buf->isoc_list;
	45	e = list->next;
	46	while (e != list) {
	47	struct oz_elt_info *ei =
	48	container_of(e, struct oz_elt_info, link_order);
	49	e = e->next;
1ec41a31	50	kfree(ei);
bc3157dd CK	51	}
	52	}
	53	/* Free any elelment in the pool. */
	54	while (buf->elt_pool) {
	55	struct oz_elt_info *ei =
	56	container_of(buf->elt_pool, struct oz_elt_info, link);
	57	buf->elt_pool = buf->elt_pool->next;
1ec41a31	58	kfree(ei);
bc3157dd CK	59	}
	60	buf->free_elts = 0;
	61	}
	62	/*------------------------------------------------------------------------------
	63	* Context: softirq or process
	64	*/
	65	struct oz_elt_info oz_elt_info_alloc(struct oz_elt_buf buf)
	66	{
	67	struct oz_elt_info *ei = 0;
	68	spin_lock_bh(&buf->lock);
	69	if (buf->free_elts && buf->elt_pool) {
	70	ei = container_of(buf->elt_pool, struct oz_elt_info, link);
	71	buf->elt_pool = ei->link.next;
	72	buf->free_elts--;
	73	spin_unlock_bh(&buf->lock);
	74	if (ei->magic != OZ_ELT_INFO_MAGIC_FREE) {
	75	oz_trace("oz_elt_info_alloc: ei with bad magic: 0x%x\n",
	76	ei->magic);
	77	}
	78	} else {
	79	spin_unlock_bh(&buf->lock);
1ec41a31	80	ei = kmalloc(sizeof(struct oz_elt_info), GFP_ATOMIC);
bc3157dd CK	81	}
	82	if (ei) {
	83	ei->flags = 0;
	84	ei->app_id = 0;
	85	ei->callback = 0;
	86	ei->context = 0;
	87	ei->stream = 0;
	88	ei->magic = OZ_ELT_INFO_MAGIC_USED;
	89	INIT_LIST_HEAD(&ei->link);
	90	INIT_LIST_HEAD(&ei->link_order);
	91	}
	92	return ei;
	93	}
	94	/*------------------------------------------------------------------------------
	95	* Precondition: oz_elt_buf.lock must be held.
	96	* Context: softirq or process
	97	*/
	98	void oz_elt_info_free(struct oz_elt_buf buf, struct oz_elt_info ei)
	99	{
	100	if (ei) {
	101	if (ei->magic == OZ_ELT_INFO_MAGIC_USED) {
	102	buf->free_elts++;
	103	ei->link.next = buf->elt_pool;
	104	buf->elt_pool = &ei->link;
	105	ei->magic = OZ_ELT_INFO_MAGIC_FREE;
	106	} else {
	107	oz_trace("oz_elt_info_free: bad magic ei: %p"
	108	" magic: 0x%x\n",
	109	ei, ei->magic);
	110	}
	111	}
	112	}
	113	/*------------------------------------------------------------------------------
	114	* Context: softirq
	115	*/
	116	void oz_elt_info_free_chain(struct oz_elt_buf buf, struct list_head list)
	117	{
	118	struct list_head *e;
	119	e = list->next;
	120	spin_lock_bh(&buf->lock);
	121	while (e != list) {
	122	struct oz_elt_info *ei;
	123	ei = container_of(e, struct oz_elt_info, link);
	124	e = e->next;
	125	oz_elt_info_free(buf, ei);
	126	}
	127	spin_unlock_bh(&buf->lock);
	128	}
	129	/*------------------------------------------------------------------------------
	130	*/
	131	int oz_elt_stream_create(struct oz_elt_buf *buf, u8 id, int max_buf_count)
	132	{
1ec41a31 GKH	133	struct oz_elt_stream *st;
1ec41a31 GKH	134
bc3157dd	135	oz_trace("oz_elt_stream_create(0x%x)\n", id);
1ec41a31 GKH	136
1ec41a31 GKH	137	st = kzalloc(sizeof(struct oz_elt_stream), GFP_ATOMIC \| __GFP_ZERO);
bc3157dd	138	if (st == 0)
1ec41a31	139	return -ENOMEM;
bc3157dd CK	140	atomic_set(&st->ref_count, 1);
	141	st->id = id;
	142	st->max_buf_count = max_buf_count;
	143	INIT_LIST_HEAD(&st->elt_list);
	144	spin_lock_bh(&buf->lock);
	145	list_add_tail(&st->link, &buf->stream_list);
	146	spin_unlock_bh(&buf->lock);
	147	return 0;
	148	}
	149	/*------------------------------------------------------------------------------
	150	*/
	151	int oz_elt_stream_delete(struct oz_elt_buf *buf, u8 id)
	152	{
	153	struct list_head *e;
	154	struct oz_elt_stream *st;
	155	oz_trace("oz_elt_stream_delete(0x%x)\n", id);
	156	spin_lock_bh(&buf->lock);
	157	e = buf->stream_list.next;
	158	while (e != &buf->stream_list) {
	159	st = container_of(e, struct oz_elt_stream, link);
	160	if (st->id == id) {
	161	list_del(e);
	162	break;
	163	}
	164	st = 0;
	165	}
	166	if (!st) {
	167	spin_unlock_bh(&buf->lock);
	168	return -1;
	169	}
	170	e = st->elt_list.next;
	171	while (e != &st->elt_list) {
	172	struct oz_elt_info *ei =
	173	container_of(e, struct oz_elt_info, link);
	174	e = e->next;
	175	list_del_init(&ei->link);
	176	list_del_init(&ei->link_order);
	177	st->buf_count -= ei->length;
	178	oz_trace2(OZ_TRACE_STREAM, "Stream down: %d %d %d\n",
	179	st->buf_count,
	180	ei->length, atomic_read(&st->ref_count));
	181	oz_elt_stream_put(st);
	182	oz_elt_info_free(buf, ei);
	183	}
	184	spin_unlock_bh(&buf->lock);
	185	oz_elt_stream_put(st);
	186	return 0;
	187	}
	188	/*------------------------------------------------------------------------------
	189	*/
	190	void oz_elt_stream_get(struct oz_elt_stream *st)
	191	{
	192	atomic_inc(&st->ref_count);
	193	}
	194	/*------------------------------------------------------------------------------
	195	*/
	196	void oz_elt_stream_put(struct oz_elt_stream *st)
	197	{
	198	if (atomic_dec_and_test(&st->ref_count)) {
	199	oz_trace("Stream destroyed\n");
1ec41a31	200	kfree(st);
bc3157dd CK	201	}
	202	}
	203	/*------------------------------------------------------------------------------
	204	* Precondition: Element buffer lock must be held.
	205	* If this function fails the caller is responsible for deallocating the elt
	206	* info structure.
	207	*/
	208	int oz_queue_elt_info(struct oz_elt_buf *buf, u8 isoc, u8 id,
	209	struct oz_elt_info *ei)
	210	{
	211	struct oz_elt_stream *st = 0;
	212	struct list_head *e;
	213	if (id) {
	214	list_for_each(e, &buf->stream_list) {
	215	st = container_of(e, struct oz_elt_stream, link);
	216	if (st->id == id)
	217	break;
	218	}
	219	if (e == &buf->stream_list) {
	220	/* Stream specified but stream not known so fail.
	221	* Caller deallocates element info. */
	222	return -1;
	223	}
	224	}
	225	if (st) {
	226	/* If this is an ISOC fixed element that needs a frame number
	227	* then insert that now. Earlier we stored the unit count in
	228	* this field.
	229	*/
	230	struct oz_isoc_fixed body = (struct oz_isoc_fixed )
	231	&ei->data[sizeof(struct oz_elt)];
	232	if ((body->app_id == OZ_APPID_USB) && (body->type
	233	== OZ_USB_ENDPOINT_DATA) &&
	234	(body->format == OZ_DATA_F_ISOC_FIXED)) {
	235	u8 unit_count = body->frame_number;
	236	body->frame_number = st->frame_number;
	237	st->frame_number += unit_count;
	238	}
	239	/* Claim stream and update accounts */
	240	oz_elt_stream_get(st);
	241	ei->stream = st;
	242	st->buf_count += ei->length;
	243	/* Add to list in stream. */
	244	list_add_tail(&ei->link, &st->elt_list);
	245	oz_trace2(OZ_TRACE_STREAM, "Stream up: %d %d\n",
	246	st->buf_count, ei->length);
	247	/* Check if we have too much buffered for this stream. If so
	248	* start dropping elements until we are back in bounds.
	249	*/
	250	while ((st->buf_count > st->max_buf_count) &&
	251	!list_empty(&st->elt_list)) {
	252	struct oz_elt_info *ei2 =
	253	list_first_entry(&st->elt_list,
	254	struct oz_elt_info, link);
	255	list_del_init(&ei2->link);
	256	list_del_init(&ei2->link_order);
	257	st->buf_count -= ei2->length;
	258	oz_elt_info_free(buf, ei2);
	259	oz_elt_stream_put(st);
	260	}
	261	}
	262	list_add_tail(&ei->link_order, isoc ?
	263	&buf->isoc_list : &buf->order_list);
	264	return 0;
265	}
266	/*------------------------------------------------------------------------------
267	*/
268	int oz_select_elts_for_tx(struct oz_elt_buf buf, u8 isoc, unsigned len,
269	unsigned max_len, struct list_head *list)
270	{
271	int count = 0;
272	struct list_head *e;
273	struct list_head *el;
274	struct oz_elt_info *ei;
275	spin_lock_bh(&buf->lock);
276	if (isoc)
277	el = &buf->isoc_list;
278	else
279	el = &buf->order_list;
280	e = el->next;
281	while (e != el) {
282	struct oz_app_hdr *app_hdr;
283	ei = container_of(e, struct oz_elt_info, link_order);
284	e = e->next;
285	if ((*len + ei->length) <= max_len) {
286	app_hdr = (struct oz_app_hdr *)
287	&ei->data[sizeof(struct oz_elt)];
288	app_hdr->elt_seq_num = buf->tx_seq_num[ei->app_id]++;
289	if (buf->tx_seq_num[ei->app_id] == 0)
290	buf->tx_seq_num[ei->app_id] = 1;
291	*len += ei->length;
292	list_del(&ei->link);
293	list_del(&ei->link_order);
294	if (ei->stream) {
295	ei->stream->buf_count -= ei->length;
296	oz_trace2(OZ_TRACE_STREAM,
297	"Stream down: %d %d\n",
298	ei->stream->buf_count, ei->length);
299	oz_elt_stream_put(ei->stream);
300	ei->stream = 0;
301	}
302	INIT_LIST_HEAD(&ei->link_order);
303	list_add_tail(&ei->link, list);
304	count++;
305	} else {
306	break;
307	}
308	}
309	spin_unlock_bh(&buf->lock);
310	return count;
311	}
312	/*------------------------------------------------------------------------------
313	*/
314	int oz_are_elts_available(struct oz_elt_buf *buf)
315	{
316	return buf->order_list.next != &buf->order_list;
317	}
318	/*------------------------------------------------------------------------------
319	*/
320	void oz_trim_elt_pool(struct oz_elt_buf *buf)
321	{
322	struct list_head *free = 0;
323	struct list_head *e;
324	spin_lock_bh(&buf->lock);
325	while (buf->free_elts > buf->max_free_elts) {
326	e = buf->elt_pool;
327	buf->elt_pool = e->next;
328	e->next = free;
329	free = e;
330	buf->free_elts--;
331	}
332	spin_unlock_bh(&buf->lock);
333	while (free) {
334	struct oz_elt_info *ei =
335	container_of(free, struct oz_elt_info, link);
336	free = free->next;
1ec41a31	337	kfree(ei);
bc3157dd CK	338	}
bc3157dd CK	339	}