xref: /freebsd/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib.h (revision 39ee7a7a6bdd1557b1c3532abf60d139798ac88b)
1 /*
2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
3  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4  * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
5  *
6  * This software is available to you under a choice of one of two
7  * licenses.  You may choose to be licensed under the terms of the GNU
8  * General Public License (GPL) Version 2, available from the file
9  * COPYING in the main directory of this source tree, or the
10  * OpenIB.org BSD license below:
11  *
12  *     Redistribution and use in source and binary forms, with or
13  *     without modification, are permitted provided that the following
14  *     conditions are met:
15  *
16  *      - Redistributions of source code must retain the above
17  *        copyright notice, this list of conditions and the following
18  *        disclaimer.
19  *
20  *      - Redistributions in binary form must reproduce the above
21  *        copyright notice, this list of conditions and the following
22  *        disclaimer in the documentation and/or other materials
23  *        provided with the distribution.
24  *
25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32  * SOFTWARE.
33  */
34 
35 #ifndef _IPOIB_H
36 #define _IPOIB_H
37 
38 #include "opt_inet.h"
39 #include "opt_inet6.h"
40 #include "opt_ofed.h"
41 
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
45 #include <sys/lock.h>
46 #include <sys/malloc.h>
47 #include <sys/mbuf.h>
48 #include <sys/random.h>
49 #include <sys/rwlock.h>
50 #include <sys/socket.h>
51 #include <sys/sockio.h>
52 #include <sys/sysctl.h>
53 
54 #include <net/if.h>
55 #include <net/if_var.h>
56 #include <net/if_arp.h>
57 #include <net/netisr.h>
58 #include <net/route.h>
59 #include <net/if_llc.h>
60 #include <net/if_dl.h>
61 #include <net/if_types.h>
62 #include <net/bpf.h>
63 #include <net/if_llatbl.h>
64 #include <net/vnet.h>
65 
66 #if defined(INET) || defined(INET6)
67 #include <netinet/in.h>
68 #include <netinet/in_var.h>
69 #include <netinet/if_ether.h>
70 #include <netinet/ip_var.h>
71 #endif
72 #ifdef INET6
73 #include <netinet6/nd6.h>
74 #endif
75 
76 #include <security/mac/mac_framework.h>
77 
78 #include <linux/list.h>
79 
80 #include <linux/workqueue.h>
81 #include <linux/kref.h>
82 #include <linux/mutex.h>
83 #include <linux/rbtree.h>
84 
85 #include <asm/atomic.h>
86 
87 #include <rdma/ib_verbs.h>
88 #include <rdma/ib_pack.h>
89 #include <rdma/ib_sa.h>
90 
91 /* constants */
92 
93 #define	INFINIBAND_ALEN		20	/* Octets in IPoIB HW addr */
94 
95 #ifdef IPOIB_CM
96 #define	CONFIG_INFINIBAND_IPOIB_CM
97 #endif
98 
99 #ifdef IPOIB_DEBUG
100 #define	CONFIG_INFINIBAND_IPOIB_DEBUG
101 #define CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
102 #endif
103 
104 enum ipoib_flush_level {
105 	IPOIB_FLUSH_LIGHT,
106 	IPOIB_FLUSH_NORMAL,
107 	IPOIB_FLUSH_HEAVY
108 };
109 
110 enum {
111 	IPOIB_ENCAP_LEN		  = 4,
112 	IPOIB_HEADER_LEN	  = IPOIB_ENCAP_LEN + INFINIBAND_ALEN,
113 	IPOIB_UD_MAX_MTU	  = 4 * 1024,
114 //	IPOIB_UD_RX_SG		  = (IPOIB_UD_MAX_MTU / MJUMPAGESIZE),
115 	IPOIB_UD_RX_SG		  = 2,
116 	IPOIB_UD_TX_SG		  = (IPOIB_UD_MAX_MTU / MCLBYTES) + 2,
117 	IPOIB_CM_MAX_MTU	  = (64 * 1024),
118 	IPOIB_CM_TX_SG		  = (IPOIB_CM_MAX_MTU / MCLBYTES) + 2,
119 	IPOIB_CM_RX_SG		  = (IPOIB_CM_MAX_MTU / MJUMPAGESIZE),
120 	IPOIB_RX_RING_SIZE	  = 256,
121 	IPOIB_TX_RING_SIZE	  = 128,
122 	IPOIB_MAX_RX_SG		  = MAX(IPOIB_CM_RX_SG, IPOIB_UD_RX_SG),
123 	IPOIB_MAX_TX_SG		  = MAX(IPOIB_CM_TX_SG, IPOIB_UD_TX_SG),
124 	IPOIB_MAX_QUEUE_SIZE	  = 8192,
125 	IPOIB_MIN_QUEUE_SIZE	  = 2,
126 	IPOIB_CM_MAX_CONN_QP	  = 4096,
127 
128 	IPOIB_NUM_WC		  = 4,
129 
130 	IPOIB_MAX_PATH_REC_QUEUE  = 3,
131 	IPOIB_MAX_MCAST_QUEUE	  = 3,
132 
133 	IPOIB_FLAG_OPER_UP	  = 0,
134 	IPOIB_FLAG_INITIALIZED	  = 1,
135 	IPOIB_FLAG_ADMIN_UP	  = 2,
136 	IPOIB_PKEY_ASSIGNED	  = 3,
137 	IPOIB_PKEY_STOP		  = 4,
138 	IPOIB_FLAG_SUBINTERFACE	  = 5,
139 	IPOIB_MCAST_RUN		  = 6,
140 	IPOIB_STOP_REAPER	  = 7,
141 	IPOIB_FLAG_UMCAST	  = 10,
142 	IPOIB_FLAG_CSUM		  = 11,
143 
144 	IPOIB_MAX_BACKOFF_SECONDS = 16,
145 
146 	IPOIB_MCAST_FLAG_FOUND	  = 0,	/* used in set_multicast_list */
147 	IPOIB_MCAST_FLAG_SENDONLY = 1,
148 	IPOIB_MCAST_FLAG_BUSY	  = 2,	/* joining or already joined */
149 	IPOIB_MCAST_FLAG_ATTACHED = 3,
150 
151 	IPOIB_MAX_LRO_DESCRIPTORS = 8,
152 	IPOIB_LRO_MAX_AGGR 	  = 64,
153 
154 	MAX_SEND_CQE		  = 16,
155 	IPOIB_CM_COPYBREAK	  = 256,
156 };
157 
158 #define	IPOIB_OP_RECV   (1ul << 31)
159 #ifdef CONFIG_INFINIBAND_IPOIB_CM
160 #define	IPOIB_OP_CM     (1ul << 30)
161 #else
162 #define	IPOIB_OP_CM     (0)
163 #endif
164 
165 /* structs */
166 
167 struct ipoib_header {
168 	u8  hwaddr[INFINIBAND_ALEN];
169 	__be16	proto;
170 	u16	reserved;
171 };
172 
173 struct ipoib_pseudoheader {
174 	u8  hwaddr[INFINIBAND_ALEN];
175 };
176 
177 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
178 struct ipoib_mcast {
179 	struct ib_sa_mcmember_rec mcmember;
180 	struct ib_sa_multicast	 *mc;
181 	struct ipoib_ah		 *ah;
182 
183 	struct rb_node    rb_node;
184 	struct list_head  list;
185 
186 	unsigned long created;
187 	unsigned long backoff;
188 
189 	unsigned long flags;
190 	unsigned char logcount;
191 
192 	struct ifqueue pkt_queue;
193 
194 	struct ipoib_dev_priv *priv;
195 };
196 
197 struct ipoib_cm_rx_buf {
198 	struct mbuf *mb;
199 	u64		mapping[IPOIB_CM_RX_SG];
200 };
201 
202 struct ipoib_cm_tx_buf {
203 	struct mbuf *mb;
204 	u64		mapping[IPOIB_CM_TX_SG];
205 };
206 
207 struct ipoib_rx_buf {
208 	struct mbuf *mb;
209 	u64		mapping[IPOIB_UD_RX_SG];
210 };
211 
212 struct ipoib_tx_buf {
213 	struct mbuf *mb;
214 	u64		mapping[IPOIB_UD_TX_SG];
215 };
216 
217 struct ib_cm_id;
218 
219 struct ipoib_cm_data {
220 	__be32 qpn; /* High byte MUST be ignored on receive */
221 	__be32 mtu;
222 };
223 
224 /*
225  * Quoting 10.3.1 Queue Pair and EE Context States:
226  *
227  * Note, for QPs that are associated with an SRQ, the Consumer should take the
228  * QP through the Error State before invoking a Destroy QP or a Modify QP to the
229  * Reset State.  The Consumer may invoke the Destroy QP without first performing
230  * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
231  * Last WQE Reached Event. However, if the Consumer does not wait for the
232  * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
233  * leakage may occur. Therefore, it is good programming practice to tear down a
234  * QP that is associated with an SRQ by using the following process:
235  *
236  * - Put the QP in the Error State
237  * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
238  * - either:
239  *       drain the CQ by invoking the Poll CQ verb and either wait for CQ
240  *       to be empty or the number of Poll CQ operations has exceeded
241  *       CQ capacity size;
242  * - or
243  *       post another WR that completes on the same CQ and wait for this
244  *       WR to return as a WC;
245  * - and then invoke a Destroy QP or Reset QP.
246  *
247  * We use the second option and wait for a completion on the
248  * same CQ before destroying QPs attached to our SRQ.
249  */
250 
251 enum ipoib_cm_state {
252 	IPOIB_CM_RX_LIVE,
253 	IPOIB_CM_RX_ERROR, /* Ignored by stale task */
254 	IPOIB_CM_RX_FLUSH  /* Last WQE Reached event observed */
255 };
256 
257 struct ipoib_cm_rx {
258 	struct ib_cm_id	       *id;
259 	struct ib_qp	       *qp;
260 	struct ipoib_cm_rx_buf *rx_ring;
261 	struct list_head	list;
262 	struct ipoib_dev_priv	*priv;
263 	unsigned long		jiffies;
264 	enum ipoib_cm_state	state;
265 	int			recv_count;
266 };
267 
268 struct ipoib_cm_tx {
269 	struct ib_cm_id	    *id;
270 	struct ib_qp	    *qp;
271 	struct list_head     list;
272 	struct ipoib_dev_priv *priv;
273 	struct ipoib_path   *path;
274 	struct ipoib_cm_tx_buf *tx_ring;
275 	unsigned	     tx_head;
276 	unsigned	     tx_tail;
277 	unsigned long	     flags;
278 	u32		     mtu;	/* remote specified mtu, with grh. */
279 };
280 
281 struct ipoib_cm_dev_priv {
282 	struct ib_srq	       *srq;
283 	struct ipoib_cm_rx_buf *srq_ring;
284 	struct ib_cm_id	       *id;
285 	struct list_head	passive_ids;   /* state: LIVE */
286 	struct list_head	rx_error_list; /* state: ERROR */
287 	struct list_head	rx_flush_list; /* state: FLUSH, drain not started */
288 	struct list_head	rx_drain_list; /* state: FLUSH, drain started */
289 	struct list_head	rx_reap_list;  /* state: FLUSH, drain done */
290 	struct work_struct      start_task;
291 	struct work_struct      reap_task;
292 	struct work_struct      mb_task;
293 	struct work_struct      rx_reap_task;
294 	struct delayed_work     stale_task;
295 	struct ifqueue     	mb_queue;
296 	struct list_head	start_list;
297 	struct list_head	reap_list;
298 	struct ib_sge		rx_sge[IPOIB_CM_RX_SG];
299 	struct ib_recv_wr	rx_wr;
300 	int			nonsrq_conn_qp;
301 	int			max_cm_mtu;	/* Actual buf size. */
302 	int			num_frags;
303 };
304 
305 struct ipoib_ethtool_st {
306 	u16     coalesce_usecs;
307 	u16     max_coalesced_frames;
308 };
309 
310 /*
311  * Device private locking: network stack tx_lock protects members used
312  * in TX fast path, lock protects everything else.  lock nests inside
313  * of tx_lock (ie tx_lock must be acquired first if needed).
314  */
315 struct ipoib_dev_priv {
316 	spinlock_t lock;
317 	spinlock_t drain_lock;
318 
319 	struct ifnet *dev;
320 
321 	u8 broadcastaddr[INFINIBAND_ALEN];
322 
323 	unsigned long flags;
324 
325 	struct mutex vlan_mutex;
326 
327 	struct rb_root  path_tree;
328 	struct list_head path_list;
329 
330 	struct ipoib_mcast *broadcast;
331 	struct list_head multicast_list;
332 	struct rb_root multicast_tree;
333 
334 	struct delayed_work pkey_poll_task;
335 	struct delayed_work mcast_task;
336 	struct work_struct carrier_on_task;
337 	struct work_struct flush_light;
338 	struct work_struct flush_normal;
339 	struct work_struct flush_heavy;
340 	struct work_struct restart_task;
341 	struct delayed_work ah_reap_task;
342 
343 	struct ib_device *ca;
344 	u8		  port;
345 	u16		  pkey;
346 	u16		  pkey_index;
347 	struct ib_pd	 *pd;
348 	struct ib_mr	 *mr;
349 	struct ib_cq	 *recv_cq;
350 	struct ib_cq	 *send_cq;
351 	struct ib_qp	 *qp;
352 	u32		  qkey;
353 
354 	union ib_gid local_gid;
355 	u16	     local_lid;
356 
357 	unsigned int admin_mtu;		/* User selected MTU, no GRH. */
358 	unsigned int mcast_mtu;		/* Minus GRH bytes, from mcast group. */
359 	unsigned int max_ib_mtu;	/* Without header, actual buf size. */
360 
361 	struct ipoib_rx_buf *rx_ring;
362 
363 	struct ipoib_tx_buf *tx_ring;
364 	unsigned	     tx_head;
365 	unsigned	     tx_tail;
366 	struct ib_sge	     tx_sge[IPOIB_MAX_TX_SG];
367 	struct ib_send_wr    tx_wr;
368 	unsigned	     tx_outstanding;
369 	struct ib_wc	     send_wc[MAX_SEND_CQE];
370 
371 	struct ib_recv_wr    rx_wr;
372 	struct ib_sge	     rx_sge[IPOIB_MAX_RX_SG];
373 
374 	struct ib_wc ibwc[IPOIB_NUM_WC];
375 
376 	struct list_head dead_ahs;
377 
378 	struct ib_event_handler event_handler;
379 
380 	struct ifnet *parent;
381 	struct list_head child_intfs;
382 	struct list_head list;
383 
384 #ifdef CONFIG_INFINIBAND_IPOIB_CM
385 	struct ipoib_cm_dev_priv cm;
386 #endif
387 
388 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
389 	struct list_head fs_list;
390 	struct dentry *mcg_dentry;
391 	struct dentry *path_dentry;
392 #endif
393 	int	hca_caps;
394 	struct ipoib_ethtool_st ethtool;
395 	struct timer_list poll_timer;
396 };
397 
398 struct ipoib_ah {
399 	struct ipoib_dev_priv *priv;
400 	struct ib_ah	  *ah;
401 	struct list_head   list;
402 	struct kref	   ref;
403 	unsigned	   last_send;
404 };
405 
406 struct ipoib_path {
407 	struct ipoib_dev_priv *priv;
408 	struct rb_node	      rb_node;
409 	struct list_head      list;
410 #ifdef CONFIG_INFINIBAND_IPOIB_CM
411 	uint8_t		      hwaddr[INFINIBAND_ALEN];
412 	struct ipoib_cm_tx   *cm;
413 #endif
414 	struct ipoib_ah      *ah;
415 	struct ib_sa_path_rec pathrec;
416 	struct ifqueue	      queue;
417 
418 	int		      query_id;
419 	struct ib_sa_query   *query;
420 	struct completion     done;
421 
422 	int  		      valid;
423 };
424 
425 /* UD Only transmits encap len but we want the two sizes to be symmetrical. */
426 #define IPOIB_UD_MTU(ib_mtu)		(ib_mtu - IPOIB_ENCAP_LEN)
427 #define	IPOIB_CM_MTU(ib_mtu)		(ib_mtu - 0x10)
428 
429 #define	IPOIB_IS_MULTICAST(addr)	((addr)[4] == 0xff)
430 
431 extern struct workqueue_struct *ipoib_workqueue;
432 
433 #define IPOIB_MTAP_PROTO(_ifp, _m, _proto)			\
434 do {								\
435 	if (bpf_peers_present((_ifp)->if_bpf)) {		\
436 		M_ASSERTVALID(_m);				\
437 		ipoib_mtap_proto((_ifp), (_m), (_proto));	\
438 	}							\
439 } while (0)
440 
441 /* functions */
442 void ipoib_mtap_proto(struct ifnet *ifp, struct mbuf *mb, uint16_t proto);
443 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
444 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
445 
446 struct ipoib_ah *ipoib_create_ah(struct ipoib_dev_priv *,
447 				 struct ib_pd *pd, struct ib_ah_attr *attr);
448 void ipoib_free_ah(struct kref *kref);
449 static inline void ipoib_put_ah(struct ipoib_ah *ah)
450 {
451 	kref_put(&ah->ref, ipoib_free_ah);
452 }
453 
454 int ipoib_open(struct ipoib_dev_priv *priv);
455 int ipoib_add_pkey_attr(struct ipoib_dev_priv *priv);
456 int ipoib_add_umcast_attr(struct ipoib_dev_priv *priv);
457 
458 void ipoib_demux(struct ifnet *ifp, struct mbuf *m, u_short proto);
459 
460 void ipoib_send(struct ipoib_dev_priv *priv, struct mbuf *mb,
461 		struct ipoib_ah *address, u32 qpn);
462 void ipoib_reap_ah(struct work_struct *work);
463 
464 void ipoib_mark_paths_invalid(struct ipoib_dev_priv *priv);
465 void ipoib_flush_paths(struct ipoib_dev_priv *priv);
466 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
467 
468 int ipoib_ib_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca,
469     int port);
470 void ipoib_ib_dev_flush_light(struct work_struct *work);
471 void ipoib_ib_dev_flush_normal(struct work_struct *work);
472 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
473 void ipoib_pkey_event(struct work_struct *work);
474 void ipoib_ib_dev_cleanup(struct ipoib_dev_priv *priv);
475 
476 int ipoib_ib_dev_open(struct ipoib_dev_priv *priv);
477 int ipoib_ib_dev_up(struct ipoib_dev_priv *priv);
478 int ipoib_ib_dev_down(struct ipoib_dev_priv *priv, int flush);
479 int ipoib_ib_dev_stop(struct ipoib_dev_priv *priv, int flush);
480 
481 int ipoib_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca, int port);
482 void ipoib_dev_cleanup(struct ipoib_dev_priv *priv);
483 
484 void ipoib_mcast_join_task(struct work_struct *work);
485 void ipoib_mcast_carrier_on_task(struct work_struct *work);
486 void ipoib_mcast_send(struct ipoib_dev_priv *priv, void *mgid, struct mbuf *mb);
487 
488 void ipoib_mcast_restart_task(struct work_struct *work);
489 void ipoib_mcast_restart(struct ipoib_dev_priv *);
490 int ipoib_mcast_start_thread(struct ipoib_dev_priv *priv);
491 int ipoib_mcast_stop_thread(struct ipoib_dev_priv *priv, int flush);
492 
493 void ipoib_mcast_dev_down(struct ipoib_dev_priv *priv);
494 void ipoib_mcast_dev_flush(struct ipoib_dev_priv *priv);
495 
496 void ipoib_path_free(struct ipoib_dev_priv *priv, struct ipoib_path *path);
497 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
498 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct ipoib_dev_priv *priv);
499 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
500 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
501 				  union ib_gid *gid,
502 				  unsigned long *created,
503 				  unsigned int *queuelen,
504 				  unsigned int *complete,
505 				  unsigned int *send_only);
506 
507 struct ipoib_path_iter *ipoib_path_iter_init(struct ipoib_dev_priv *priv);
508 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
509 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
510 			  struct ipoib_path *path);
511 #endif
512 
513 int ipoib_change_mtu(struct ipoib_dev_priv *priv, int new_mtu);
514 
515 int ipoib_mcast_attach(struct ipoib_dev_priv *priv, u16 mlid,
516 		       union ib_gid *mgid, int set_qkey);
517 
518 int ipoib_init_qp(struct ipoib_dev_priv *priv);
519 int ipoib_transport_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca);
520 void ipoib_transport_dev_cleanup(struct ipoib_dev_priv *priv);
521 
522 void ipoib_event(struct ib_event_handler *handler,
523 		 struct ib_event *record);
524 
525 void ipoib_pkey_poll(struct work_struct *work);
526 int ipoib_pkey_dev_delay_open(struct ipoib_dev_priv *priv);
527 void ipoib_drain_cq(struct ipoib_dev_priv *priv);
528 
529 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req, int max);
530 void ipoib_dma_unmap_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
531 int ipoib_poll_tx(struct ipoib_dev_priv *priv);
532 
533 void ipoib_dma_unmap_rx(struct ipoib_dev_priv *priv, struct ipoib_rx_buf *rx_req);
534 void ipoib_dma_mb(struct ipoib_dev_priv *priv, struct mbuf *mb, unsigned int length);
535 struct mbuf *ipoib_alloc_map_mb(struct ipoib_dev_priv *priv, struct ipoib_rx_buf *rx_req, int size);
536 
537 
538 void ipoib_set_ethtool_ops(struct ifnet *dev);
539 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
540 
541 #ifdef CONFIG_INFINIBAND_IPOIB_CM
542 
543 #define IPOIB_FLAGS_RC		0x80
544 #define IPOIB_FLAGS_UC		0x40
545 
546 /* We don't support UC connections at the moment */
547 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
548 
549 extern int ipoib_max_conn_qp;
550 
551 static inline int ipoib_cm_admin_enabled(struct ipoib_dev_priv *priv)
552 {
553 	return IPOIB_CM_SUPPORTED(IF_LLADDR(priv->dev));
554 }
555 
556 static inline int ipoib_cm_enabled(struct ipoib_dev_priv *priv, uint8_t *hwaddr)
557 {
558 	return IPOIB_CM_SUPPORTED(hwaddr);
559 }
560 
561 static inline int ipoib_cm_up(struct ipoib_path *path)
562 
563 {
564 	return test_bit(IPOIB_FLAG_OPER_UP, &path->cm->flags);
565 }
566 
567 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_path *path)
568 {
569 	return path->cm;
570 }
571 
572 static inline void ipoib_cm_set(struct ipoib_path *path, struct ipoib_cm_tx *tx)
573 {
574 	path->cm = tx;
575 }
576 
577 static inline int ipoib_cm_has_srq(struct ipoib_dev_priv *priv)
578 {
579 	return !!priv->cm.srq;
580 }
581 
582 static inline unsigned int ipoib_cm_max_mtu(struct ipoib_dev_priv *priv)
583 {
584 	return priv->cm.max_cm_mtu;
585 }
586 
587 void ipoib_cm_send(struct ipoib_dev_priv *priv, struct mbuf *mb, struct ipoib_cm_tx *tx);
588 int ipoib_cm_dev_open(struct ipoib_dev_priv *priv);
589 void ipoib_cm_dev_stop(struct ipoib_dev_priv *priv);
590 int ipoib_cm_dev_init(struct ipoib_dev_priv *priv);
591 int ipoib_cm_add_mode_attr(struct ipoib_dev_priv *priv);
592 void ipoib_cm_dev_cleanup(struct ipoib_dev_priv *priv);
593 struct ipoib_cm_tx *ipoib_cm_create_tx(struct ipoib_dev_priv *priv,
594     struct ipoib_path *path);
595 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
596 void ipoib_cm_mb_too_long(struct ipoib_dev_priv *priv, struct mbuf *mb,
597 			   unsigned int mtu);
598 void ipoib_cm_handle_rx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc);
599 void ipoib_cm_handle_tx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc);
600 #else
601 
602 struct ipoib_cm_tx;
603 
604 #define ipoib_max_conn_qp 0
605 
606 static inline int ipoib_cm_admin_enabled(struct ipoib_dev_priv *priv)
607 {
608 	return 0;
609 }
610 static inline int ipoib_cm_enabled(struct ipoib_dev_priv *priv, uint8_t *hwaddr)
611 
612 {
613 	return 0;
614 }
615 
616 static inline int ipoib_cm_up(struct ipoib_path *path)
617 
618 {
619 	return 0;
620 }
621 
622 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_path *path)
623 {
624 	return NULL;
625 }
626 
627 static inline void ipoib_cm_set(struct ipoib_path *path, struct ipoib_cm_tx *tx)
628 {
629 }
630 
631 static inline int ipoib_cm_has_srq(struct ipoib_dev_priv *priv)
632 {
633 	return 0;
634 }
635 
636 static inline unsigned int ipoib_cm_max_mtu(struct ipoib_dev_priv *priv)
637 {
638 	return 0;
639 }
640 
641 static inline
642 void ipoib_cm_send(struct ipoib_dev_priv *priv, struct mbuf *mb, struct ipoib_cm_tx *tx)
643 {
644 	return;
645 }
646 
647 static inline
648 int ipoib_cm_dev_open(struct ipoib_dev_priv *priv)
649 {
650 	return 0;
651 }
652 
653 static inline
654 void ipoib_cm_dev_stop(struct ipoib_dev_priv *priv)
655 {
656 	return;
657 }
658 
659 static inline
660 int ipoib_cm_dev_init(struct ipoib_dev_priv *priv)
661 {
662 	return -ENOSYS;
663 }
664 
665 static inline
666 void ipoib_cm_dev_cleanup(struct ipoib_dev_priv *priv)
667 {
668 	return;
669 }
670 
671 static inline
672 struct ipoib_cm_tx *ipoib_cm_create_tx(struct ipoib_dev_priv *priv, struct ipoib_path *path)
673 {
674 	return NULL;
675 }
676 
677 static inline
678 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
679 {
680 	return;
681 }
682 
683 static inline
684 int ipoib_cm_add_mode_attr(struct ipoib_dev_priv *priv)
685 {
686 	return 0;
687 }
688 
689 static inline void ipoib_cm_mb_too_long(struct ipoib_dev_priv *priv, struct mbuf *mb,
690 					 unsigned int mtu)
691 {
692 	m_freem(mb);
693 }
694 
695 static inline void ipoib_cm_handle_rx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc)
696 {
697 }
698 
699 static inline void ipoib_cm_handle_tx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc)
700 {
701 }
702 #endif
703 
704 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
705 void ipoib_create_debug_files(struct ipoib_dev_priv *priv);
706 void ipoib_delete_debug_files(struct ipoib_dev_priv *priv);
707 int ipoib_register_debugfs(void);
708 void ipoib_unregister_debugfs(void);
709 #else
710 static inline void ipoib_create_debug_files(struct ipoib_dev_priv *priv) { }
711 static inline void ipoib_delete_debug_files(struct ipoib_dev_priv *priv) { }
712 static inline int ipoib_register_debugfs(void) { return 0; }
713 static inline void ipoib_unregister_debugfs(void) { }
714 #endif
715 
716 #define ipoib_printk(level, priv, format, arg...)	\
717 	printk(level "%s: " format, if_name(((struct ipoib_dev_priv *) priv)->dev), ## arg)
718 #define ipoib_warn(priv, format, arg...)		\
719 	ipoib_printk(KERN_WARNING, priv, format , ## arg)
720 
721 extern int ipoib_sendq_size;
722 extern int ipoib_recvq_size;
723 
724 extern struct ib_sa_client ipoib_sa_client;
725 
726 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
727 extern int ipoib_debug_level;
728 
729 #define ipoib_dbg(priv, format, arg...)			\
730 	do {						\
731 		if (ipoib_debug_level > 0)			\
732 			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
733 	} while (0)
734 #define ipoib_dbg_mcast(priv, format, arg...)		\
735 	do {						\
736 		if (mcast_debug_level > 0)		\
737 			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
738 	} while (0)
739 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
740 #define ipoib_dbg(priv, format, arg...)			\
741 	do { (void) (priv); } while (0)
742 #define ipoib_dbg_mcast(priv, format, arg...)		\
743 	do { (void) (priv); } while (0)
744 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
745 
746 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
747 #define ipoib_dbg_data(priv, format, arg...)		\
748 	do {						\
749 		if (data_debug_level > 0)		\
750 			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
751 	} while (0)
752 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
753 #define ipoib_dbg_data(priv, format, arg...)		\
754 	do { (void) (priv); } while (0)
755 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
756 
757 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
758 
759 #endif /* _IPOIB_H */
760