xref: /illumos-gate/usr/src/uts/sun4v/sys/ds_impl.h (revision 20a7641f9918de8574b8b3b47dbe35c4bfc78df1)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _DS_IMPL_H
28 #define	_DS_IMPL_H
29 
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33 
34 #include <sys/bitmap.h>
35 #include <sys/ldoms.h>
36 
37 
38 /*
39  * The Domain Services Protocol
40  *
41  * The DS protocol is divided into two parts. The first is fixed and
42  * must remain exactly the same for *all* versions of the DS protocol.
43  * The only messages supported by the fixed portion of the protocol are
44  * to negotiate a version to use for the rest of the protocol.
45  */
46 
47 /*
48  * Domain Services Header
49  */
50 typedef struct ds_hdr {
51 	uint32_t	msg_type;	/* message type */
52 	uint32_t	payload_len;	/* payload length */
53 } ds_hdr_t;
54 
55 #define	DS_HDR_SZ	(sizeof (ds_hdr_t))
56 
57 /*
58  * DS Fixed Message Types
59  */
60 #define	DS_INIT_REQ		0x0	/* initiate DS connection */
61 #define	DS_INIT_ACK		0x1	/* initiation acknowledgement */
62 #define	DS_INIT_NACK		0x2	/* initiation negative acknowledgment */
63 
64 /*
65  * DS Fixed Initialization Messages
66  */
67 typedef struct ds_init_req {
68 	uint16_t	major_vers;	/* requested major version */
69 	uint16_t	minor_vers;	/* requested minor version */
70 } ds_init_req_t;
71 
72 typedef struct ds_init_ack {
73 	uint16_t	minor_vers;	/* highest supported minor version */
74 } ds_init_ack_t;
75 
76 typedef struct ds_init_nack {
77 	uint16_t	major_vers;	/* alternate supported major version */
78 } ds_init_nack_t;
79 
80 /*
81  * DS Message Types for Version 1.0
82  */
83 #define	DS_REG_REQ		0x3	/* register a service */
84 #define	DS_REG_ACK		0x4	/* register acknowledgement */
85 #define	DS_REG_NACK		0x5	/* register failed */
86 #define	DS_UNREG		0x6	/* unregister a service */
87 #define	DS_UNREG_ACK		0x7	/* unregister acknowledgement */
88 #define	DS_UNREG_NACK		0x8	/* unregister failed */
89 #define	DS_DATA			0x9	/* data message */
90 #define	DS_NACK			0xa	/* data error */
91 
92 /* result codes */
93 #define	DS_OK			0x0	/* success */
94 #define	DS_REG_VER_NACK		0x1	/* unsupported major version */
95 #define	DS_REG_DUP		0x2	/* duplicate registration attempted */
96 #define	DS_INV_HDL		0x3	/* service handle not valid */
97 #define	DS_TYPE_UNKNOWN		0x4	/* unknown message type received */
98 
99 /*
100  * Service Register Messages
101  */
102 typedef struct ds_reg_req {
103 	uint64_t	svc_handle;	/* service handle to register */
104 	uint16_t	major_vers;	/* requested major version */
105 	uint16_t	minor_vers;	/* requested minor version */
106 	char		svc_id[1];	/* service identifier string */
107 } ds_reg_req_t;
108 
109 typedef struct ds_reg_ack {
110 	uint64_t	svc_handle;	/* service handle sent in register */
111 	uint16_t	minor_vers;	/* highest supported minor version */
112 } ds_reg_ack_t;
113 
114 typedef struct ds_reg_nack {
115 	uint64_t	svc_handle;	/* service handle sent in register */
116 	uint64_t	result;		/* reason for the failure */
117 	uint16_t	major_vers;	/* alternate supported major version */
118 } ds_reg_nack_t;
119 
120 /*
121  * Service Unregister Messages
122  */
123 typedef struct ds_unreg_req {
124 	uint64_t	svc_handle;	/* service handle to unregister */
125 } ds_unreg_req_t;
126 
127 typedef struct ds_unreg_ack {
128 	uint64_t	svc_handle;	/* service handle sent in unregister */
129 } ds_unreg_ack_t;
130 
131 typedef struct ds_unreg_nack {
132 	uint64_t	svc_handle;	/* service handle sent in unregister */
133 } ds_unreg_nack_t;
134 
135 /*
136  * Data Transfer Messages
137  */
138 typedef struct ds_data_handle {
139 	uint64_t	svc_handle;	/* service handle for data */
140 } ds_data_handle_t;
141 
142 typedef struct ds_data_nack {
143 	uint64_t	svc_handle;	/* service handle sent in data msg */
144 	uint64_t	result;		/* reason for failure */
145 } ds_data_nack_t;
146 
147 /*
148  * Message Processing Utilities
149  */
150 #define	DS_MSG_TYPE_VALID(type)		((type) <= DS_NACK)
151 #define	DS_MSG_LEN(ds_type)		(sizeof (ds_hdr_t) + sizeof (ds_type))
152 
153 
154 /*
155  * Domain Service Port
156  *
157  * A DS port is a logical representation of an LDC dedicated to
158  * communication between DS endpoints. The ds_port_t maintains state
159  * associated with a connection to a remote endpoint. This includes
160  * the state of the port, the LDC state, the current version of the
161  * DS protocol in use on the port, and other port properties.
162  *
163  * Locking: The port is protected by a single mutex. It must be held
164  *   while the port structure is being accessed and also when data is
165  *   being read or written using the port
166  */
167 typedef enum {
168 	DS_PORT_FREE,			/* port structure not in use */
169 	DS_PORT_INIT,			/* port structure created */
170 	DS_PORT_LDC_INIT,		/* ldc successfully initialized */
171 	DS_PORT_INIT_REQ,		/* initialization handshake sent */
172 	DS_PORT_READY			/* init handshake completed */
173 } ds_port_state_t;
174 
175 typedef struct ds_ldc {
176 	uint64_t	id;		/* LDC id */
177 	ldc_handle_t	hdl;		/* LDC handle */
178 	ldc_status_t	state;		/* current LDC state */
179 } ds_ldc_t;
180 
181 typedef uint64_t ds_domain_hdl_t;
182 
183 #define	DS_DHDL_INVALID			((ds_domain_hdl_t)0xffffffff)
184 
185 /* port flags */
186 #define	DS_PORT_MUTEX_INITED	0x1	/* mutexes inited? */
187 
188 typedef struct ds_port {
189 	uint32_t	flags;		/* port flags */
190 	kmutex_t	lock;		/* port and service state lock */
191 	kmutex_t	tx_lock;	/* tx port lock */
192 	kmutex_t	rcv_lock;	/* rcv port lock */
193 	uint64_t	id;		/* port id from MD */
194 	ds_port_state_t	state;		/* state of the port */
195 	ds_ver_t	ver;		/* DS protocol version in use */
196 	uint32_t	ver_idx;	/* index of version during handshake */
197 	ds_ldc_t	ldc;		/* LDC for this port */
198 	ds_domain_hdl_t	domain_hdl;	/* LDOMs domain hdl assoc. with port */
199 	char		*domain_name;	/* LDOMs domain name assoc. with port */
200 } ds_port_t;
201 
202 #define	IS_DS_PORT(port)	1	/* VBSC code compatability */
203 #define	PORTID(port)		((ulong_t)((port)->id))
204 #define	PTR_TO_LONG(ptr)	((uint64_t)(ptr))
205 
206 /*
207  * A DS portset is a bitmap that represents a collection of DS
208  * ports. Each bit represent a particular port id.  We need
209  * to allocate for the max. number of domains supported,
210  * plus a small number (e.g. for the SP connection).
211  */
212 #define	DS_EXTRA_PORTS			16
213 #define	DS_MAX_PORTS			(LDOMS_MAX_DOMAINS + DS_EXTRA_PORTS)
214 #define	DS_PORTSET_SIZE			BT_BITOUL(DS_MAX_PORTS)
215 
216 typedef ulong_t ds_portset_t[DS_PORTSET_SIZE];
217 
218 extern ds_port_t ds_ports[DS_MAX_PORTS];
219 extern ds_portset_t ds_allports;
220 extern ds_portset_t ds_nullport;
221 
222 #define	DS_PORTID_INVALID		((uint64_t)-1)
223 
224 /* DS SP Port ID */
225 extern uint64_t ds_sp_port_id;
226 
227 #define	DS_MAX_PORT_ID			(DS_MAX_PORTS - 1)
228 
229 #define	DS_PORT_IN_SET(set, port)	BT_TEST((set), (port))
230 #define	DS_PORTSET_ADD(set, port)	BT_SET((set), (port))
231 #define	DS_PORTSET_DEL(set, port)	BT_CLEAR((set), (port))
232 #define	DS_PORTSET_ISNULL(set)		(memcmp((set), ds_nullport, \
233 					    sizeof (set)) == 0)
234 #define	DS_PORTSET_SETNULL(set)		((void)memset((set), 0, sizeof (set)))
235 #define	DS_PORTSET_DUP(set1, set2)	((void)memcpy((set1), (set2), \
236 					    sizeof (set1)))
237 
238 /*
239  * A DS event consists of a buffer on a port.  We explictly use a link to
240  * enequeue/dequeue on non-Solaris environments.  On Solaris we use taskq.
241  */
242 typedef struct ds_event {
243 	ds_port_t	*port;
244 	char		*buf;
245 	size_t		buflen;
246 } ds_event_t;
247 
248 /*
249  * LDC Information
250  */
251 #define	DS_STREAM_MTU	4096
252 
253 /*
254  * Machine Description Constants
255  */
256 #define	DS_MD_ROOT_NAME		"domain-services"
257 #define	DS_MD_PORT_NAME		"domain-services-port"
258 #define	DS_MD_CHAN_NAME		"channel-endpoint"
259 
260 /*
261  * DS Services
262  *
263  * A DS Service is a mapping between a DS capability and a client
264  * of the DS framework that provides that capability. It includes
265  * information on the state of the service, the currently negotiated
266  * version of the capability specific protocol, the port that is
267  * currently in use by the capability, etc.
268  */
269 
270 typedef enum {
271 	DS_SVC_INVAL,			/* svc structure uninitialized */
272 	DS_SVC_FREE,			/* svc structure not in use */
273 	DS_SVC_INACTIVE,		/* svc not registered */
274 	DS_SVC_REG_PENDING,		/* register message sent */
275 	DS_SVC_ACTIVE,			/* register message acknowledged */
276 	DS_SVC_UNREG_PENDING		/* unregister is pending */
277 } ds_svc_state_t;
278 
279 /* ds_svc flags bits */
280 #define	DSSF_ISCLIENT		0x0001	/* client service */
281 #define	DSSF_ISUSER		0x0002	/* user land service */
282 #define	DSSF_REGCB_VALID	0x0004	/* ops register callback is valid */
283 #define	DSSF_UNREGCB_VALID	0x0008	/* ops unregister callback is valid */
284 #define	DSSF_DATACB_VALID	0x0010	/* ops data callback is valid */
285 #define	DSSF_LOOPBACK		0x0020	/* loopback */
286 #define	DSSF_PEND_UNREG		0x0040	/* pending unregister */
287 #define	DSSF_ANYCB_VALID	(DSSF_REGCB_VALID | DSSF_UNREGCB_VALID | \
288 				    DSSF_DATACB_VALID)
289 #define	DSSF_USERFLAGS		(DSSF_ISCLIENT | DSSF_ISUSER | DSSF_ANYCB_VALID)
290 
291 typedef struct ds_svc {
292 	ds_capability_t	cap;		/* capability information */
293 	ds_clnt_ops_t	ops;		/* client ops vector */
294 	ds_svc_hdl_t	hdl;		/* handle assigned by DS */
295 	ds_svc_hdl_t	svc_hdl;	/* remote svc hdl if client svc */
296 	ds_svc_state_t	state;		/* current service state */
297 	ds_ver_t	ver;		/* svc protocol version in use */
298 	uint_t		ver_idx;	/* index into client version array */
299 	ds_port_t	*port;		/* port for this service */
300 	ds_portset_t	avail;		/* ports available to this service */
301 	ds_portset_t	tried;		/* ports tried by this service */
302 	int		fixed;		/* is svc fixed to port */
303 	uint_t		flags;		/* service flags */
304 	ds_cb_arg_t	uarg;		/* user arg for user callbacks */
305 	uint_t		drvi;		/* driver instance */
306 	void		*drv_psp;	/* driver per svc ptr */
307 } ds_svc_t;
308 
309 typedef struct ds_svcs {
310 	ds_svc_t	**tbl;		/* ptr to table */
311 	kmutex_t	lock;
312 	uint_t		maxsvcs;	/* size of the table */
313 	uint_t		nsvcs;		/* current number of items */
314 } ds_svcs_t;
315 
316 #define	DS_SVC_ISFREE(svc)	((svc == NULL) || (svc->state == DS_SVC_FREE))
317 #ifndef	DS_MAXSVCS_INIT
318 #define	DS_MAXSVCS_INIT	32
319 #endif
320 
321 /*
322  * A service handle is a 64 bit value with three pieces of information
323  * encoded in it. The upper 32 bits is the index into the table of
324  * a particular service structure. Bit 31 indicates whether the handle
325  * represents a service privider or service client. The lower 31 bits is
326  * a counter that is incremented each time a service structure is reused.
327  */
328 #define	DS_IDX_SHIFT			32
329 #define	DS_COUNT_MASK			0x7fffffffull
330 #define	DS_HDL_ISCLIENT_BIT		0x80000000ull
331 
332 #define	DS_ALLOC_HDL(_idx, _count)	(((uint64_t)_idx << DS_IDX_SHIFT) | \
333 					((uint64_t)(_count + 1) &	    \
334 					DS_COUNT_MASK))
335 #define	DS_HDL2IDX(hdl)			(hdl >> DS_IDX_SHIFT)
336 #define	DS_HDL2COUNT(hdl)		(hdl & DS_COUNT_MASK)
337 #define	DS_HDL_ISCLIENT(hdl)		((hdl) & DS_HDL_ISCLIENT_BIT)
338 #define	DS_HDL_SET_ISCLIENT(hdl)	((hdl) |= DS_HDL_ISCLIENT_BIT)
339 
340 #define	DS_INVALID_INSTANCE		(-1)
341 
342 /* enable/disable taskq processing */
343 extern boolean_t ds_enabled;
344 
345 extern ds_svcs_t ds_svcs;
346 
347 /*
348  * DS Message Logging
349  *
350  * The DS framework logs all incoming and outgoing messages to a
351  * ring buffer. This provides the ability to reconstruct a trace
352  * of DS activity for use in debugging. In addition to the message
353  * data, each log entry contains a timestamp and the destination
354  * of the message. The destination is based on the port number the
355  * message passed through (port number + 1). The sign of the dest
356  * field distinguishes incoming messages from outgoing messages.
357  * Incoming messages have a negative destination field.
358  */
359 
360 typedef struct ds_log_entry {
361 	struct ds_log_entry	*next;		/* next in log or free list */
362 	struct ds_log_entry	*prev;		/* previous in log */
363 	time_t			timestamp;	/* time message added to log */
364 	size_t			datasz;		/* size of the data */
365 	void			*data;		/* the data itself */
366 	int32_t			dest;		/* message destination */
367 } ds_log_entry_t;
368 
369 #define	DS_LOG_IN(pid)		(-(pid + 1))
370 #define	DS_LOG_OUT(pid)		(pid + 1)
371 
372 /*
373  * DS Log Limits:
374  *
375  * The size of the log is controlled by two limits. The first is
376  * a soft limit that is configurable by the user (via the global
377  * variable ds_log_sz). When this limit is exceeded, each new
378  * message that is added to the log replaces the oldest message.
379  *
380  * The second is a hard limit that is calculated based on the soft
381  * limit (DS_LOG_LIMIT). It is defined to be ~3% above the soft limit.
382  * Once this limit is exceeded, a thread is scheduled to delete old
383  * messages until the size of the log is below the soft limit.
384  */
385 #define	DS_LOG_DEFAULT_SZ	(4 * 1024 * 1024)	/* 4 MB */
386 
387 #define	DS_LOG_LIMIT		(ds_log_sz + (ds_log_sz >> 5))
388 
389 #define	DS_LOG_ENTRY_SZ(ep)	(sizeof (ds_log_entry_t) + (ep)->datasz)
390 
391 /*
392  * DS Log Memory Usage:
393  *
394  * The log free list is initialized from a pre-allocated pool of entry
395  * structures (the global ds_log_entry_pool). The number of entries
396  * in the pool (DS_LOG_NPOOL) is the number of entries that would
397  * take up half the default size of the log.
398  *
399  * As messages are added to the log, entry structures are pulled from
400  * the free list. If the free list is empty, memory is allocated for
401  * the entry. When entries are removed from the log, they are placed
402  * on the free list. Allocated memory is only deallocated when the
403  * entire log is destroyed.
404  */
405 #define	DS_LOG_NPOOL		((DS_LOG_DEFAULT_SZ >> 1) / \
406 				sizeof (ds_log_entry_t))
407 
408 #define	DS_LOG_POOL_END		(ds_log_entry_pool + DS_LOG_NPOOL)
409 
410 #define	DS_IS_POOL_ENTRY(ep)	(((ep) >= ds_log_entry_pool) && \
411 				((ep) < &(ds_log_entry_pool[DS_LOG_NPOOL])))
412 
413 /* VBSC code compatability related defines */
414 
415 /* VBSC malloc/free are similar to user malloc/free */
416 #define	DS_MALLOC(size)		kmem_zalloc(size, KM_SLEEP)
417 #define	DS_FREE(ptr, size)	kmem_free(ptr, size)
418 
419 /* VBSC debug print needs newline, Solaris cmn_err doesn't */
420 #define	DS_EOL
421 
422 /*
423  * Results of checking version array with ds_vers_isvalid()
424  */
425 typedef enum {
426 	DS_VERS_OK,
427 	DS_VERS_INCREASING_MAJOR_ERR,
428 	DS_VERS_INCREASING_MINOR_ERR
429 } ds_vers_check_t;
430 
431 /* System specific interfaces */
432 extern void ds_sys_port_init(ds_port_t *port);
433 extern void ds_sys_port_fini(ds_port_t *port);
434 extern void ds_sys_drain_events(ds_port_t *port);
435 extern int ds_sys_dispatch_func(void (func)(void *), void *arg);
436 extern void ds_sys_ldc_init(ds_port_t *port);
437 
438 /* vlds cb access to svc structure */
439 void ds_cbarg_get_hdl(ds_cb_arg_t arg, ds_svc_hdl_t *hdlp);
440 void ds_cbarg_get_flags(ds_cb_arg_t arg, uint32_t *flagsp);
441 void ds_cbarg_get_drv_info(ds_cb_arg_t arg, int *drvip);
442 void ds_cbarg_get_drv_per_svc_ptr(ds_cb_arg_t arg, void **dpspp);
443 void ds_cbarg_get_domain(ds_cb_arg_t arg, ds_domain_hdl_t *dhdlp);
444 void ds_cbarg_get_service_id(ds_cb_arg_t arg, char **servicep);
445 void ds_cbarg_set_drv_per_svc_ptr(ds_cb_arg_t arg, void *dpsp);
446 int ds_hdl_get_cbarg(ds_svc_hdl_t hdl, ds_cb_arg_t *cbargp);
447 void ds_cbarg_set_cookie(ds_svc_t *svc);
448 int ds_is_my_hdl(ds_svc_hdl_t hdl, int instance);
449 void ds_set_my_dom_hdl_name(ds_domain_hdl_t dhdl, char *name);
450 
451 /* initialization functions */
452 void ds_common_init(void);
453 int ds_ldc_fini(ds_port_t *port);
454 void ds_init_svcs_tbl(uint_t nentries);
455 
456 /* message sending functions */
457 void ds_send_init_req(ds_port_t *port);
458 int ds_send_unreg_req(ds_svc_t *svc);
459 
460 /* walker functions */
461 typedef int (*svc_cb_t)(ds_svc_t *svc, void *arg);
462 int ds_walk_svcs(svc_cb_t svc_cb, void *arg);
463 int ds_svc_ismatch(ds_svc_t *svc, void *arg);
464 int ds_svc_free(ds_svc_t *svc, void *arg);
465 int ds_svc_register(ds_svc_t *svc, void *arg);
466 
467 /* service utilities */
468 ds_svc_t *ds_alloc_svc(void);
469 ds_svc_t *ds_sys_find_svc_by_id_port(char *svc_id, ds_port_t *port,
470     int is_client);
471 ds_svc_t *ds_get_svc(ds_svc_hdl_t hdl);
472 
473 /* port utilities */
474 void ds_port_common_init(ds_port_t *port);
475 void ds_port_common_fini(ds_port_t *port);
476 
477 /* misc utilities */
478 ds_vers_check_t ds_vers_isvalid(ds_ver_t *vers, int nvers);
479 char *ds_errno_to_str(int ds_errno, char *ebuf);
480 char *ds_strdup(char *str);
481 boolean_t negotiate_version(int num_versions, ds_ver_t *sup_versionsp,
482     uint16_t req_major, uint16_t *new_majorp, uint16_t *new_minorp);
483 
484 /* log functions */
485 int ds_log_add_msg(int32_t dest, uint8_t *msg, size_t sz);
486 
487 /* vlds driver interfaces to ds module */
488 int ds_ucap_init(ds_capability_t *cap, ds_clnt_ops_t *ops, uint_t flags,
489     int instance, ds_svc_hdl_t *hdlp);
490 int ds_unreg_hdl(ds_svc_hdl_t hdl);
491 int ds_hdl_lookup(char *service, uint_t is_client, ds_svc_hdl_t *hdlp,
492     uint_t maxhdls, uint_t *nhdlsp);
493 int ds_service_lookup(ds_svc_hdl_t hdl, char **servicep, uint_t *is_client);
494 int ds_domain_lookup(ds_svc_hdl_t hdl, ds_domain_hdl_t *dhdlp);
495 int ds_hdl_isready(ds_svc_hdl_t hdl, uint_t *is_ready);
496 void ds_unreg_all(int instance);
497 int ds_dom_name_to_hdl(char *domain_name, ds_domain_hdl_t *dhdlp);
498 int ds_dom_hdl_to_name(ds_domain_hdl_t dhdl, char **domain_namep);
499 int ds_add_port(uint64_t port_id, uint64_t ldc_id, ds_domain_hdl_t dhdl,
500     char *dom_name, int verbose);
501 int ds_remove_port(uint64_t portid, int is_fini);
502 
503 /* ds_ucap_init flags */
504 #define	DS_UCAP_CLNT		0x0	/* Service is Client */
505 #define	DS_UCAP_SVC		0x1	/* Service is Server */
506 
507 /*
508  * Error buffer size for ds_errno_to_str
509  */
510 #define	DS_EBUFSIZE	80
511 
512 /*
513  * Debugging Features
514  */
515 #ifdef DEBUG
516 
517 #define	DS_DBG_BASIC			0x001
518 #define	DS_DBG_FLAG_LDC			0x002
519 #define	DS_DBG_FLAG_LOG			0x004
520 #define	DS_DBG_DUMP_LDC_MSG		0x008
521 #define	DS_DBG_FLAG_MD			0x010
522 #define	DS_DBG_FLAG_USR			0x020
523 #define	DS_DBG_FLAG_VLDS		0x040
524 #define	DS_DBG_FLAG_PRCL		0x080
525 #define	DS_DBG_FLAG_RCVQ		0x100
526 #define	DS_DBG_FLAG_LOOP		0x200
527 
528 #define	DS_DBG				if (ds_debug & DS_DBG_BASIC) cmn_err
529 #define	DS_DBG_LDC			if (ds_debug & DS_DBG_FLAG_LDC) cmn_err
530 #define	DS_DBG_LOG			if (ds_debug & DS_DBG_FLAG_LOG) cmn_err
531 #define	DS_DBG_MD			if (ds_debug & DS_DBG_FLAG_MD) cmn_err
532 #define	DS_DBG_USR			if (ds_debug & DS_DBG_FLAG_USR) cmn_err
533 #define	DS_DBG_VLDS			if (ds_debug & DS_DBG_FLAG_VLDS) cmn_err
534 #define	DS_DBG_PRCL			if (ds_debug & DS_DBG_FLAG_PRCL) cmn_err
535 #define	DS_DBG_RCVQ			if (ds_debug & DS_DBG_FLAG_RCVQ) cmn_err
536 #define	DS_DBG_LOOP			if (ds_debug & DS_DBG_FLAG_LOOP) cmn_err
537 
538 #define	DS_DUMP_MSG(flags, buf, len)	if (ds_debug & (flags)) \
539 					    ds_dump_msg(buf, len)
540 
541 extern uint_t ds_debug;
542 void ds_dump_msg(void *buf, size_t len);
543 
544 #define	DS_BADHDL1			(ds_svc_hdl_t)(0xdeadbed1deadbed1ull)
545 #define	DS_BADHDL2			(ds_svc_hdl_t)(0x2deadbed2deadbedull)
546 
547 #else /* DEBUG */
548 
549 #define	DS_DBG				if (0) cmn_err
550 #define	DS_DBG_LDC			DS_DBG
551 #define	DS_DBG_LOG			DS_DBG
552 #define	DS_DBG_MD			DS_DBG
553 #define	DS_DBG_USR			DS_DBG
554 #define	DS_DBG_VLDS			DS_DBG
555 #define	DS_DBG_PRCL			DS_DBG
556 #define	DS_DBG_RCVQ			DS_DBG
557 #define	DS_DBG_LOOP			DS_DBG
558 #define	DS_DUMP_MSG(flags, buf, len)
559 #define	DS_DUMP_LDC_MSG(buf, len)
560 
561 #define	DS_BADHDL1			(ds_svc_hdl_t)0
562 #define	DS_BADHDL2			(ds_svc_hdl_t)0
563 
564 #endif /* DEBUG */
565 
566 #ifdef __cplusplus
567 }
568 #endif
569 
570 #endif /* _DS_IMPL_H */
571