xref: /freebsd/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib.h (revision bc96366c864c07ef352edb92017357917c75b36c)
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 
84 #include <asm/atomic.h>
85 
86 #include <rdma/ib_verbs.h>
87 #include <rdma/ib_pack.h>
88 #include <rdma/ib_sa.h>
89 
90 /* constants */
91 
92 #define	INFINIBAND_ALEN		20	/* Octets in IPoIB HW addr */
93 
94 #ifdef IPOIB_CM
95 #define	CONFIG_INFINIBAND_IPOIB_CM
96 #endif
97 
98 #ifdef IPOIB_DEBUG
99 #define	CONFIG_INFINIBAND_IPOIB_DEBUG
100 #define CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
101 #endif
102 
103 enum ipoib_flush_level {
104 	IPOIB_FLUSH_LIGHT,
105 	IPOIB_FLUSH_NORMAL,
106 	IPOIB_FLUSH_HEAVY
107 };
108 
109 enum {
110 	IPOIB_ENCAP_LEN		  = 4,
111 	IPOIB_HEADER_LEN	  = IPOIB_ENCAP_LEN + INFINIBAND_ALEN,
112 	IPOIB_UD_MAX_MTU	  = 4 * 1024,
113 //	IPOIB_UD_RX_SG		  = (IPOIB_UD_MAX_MTU / MJUMPAGESIZE),
114 	IPOIB_UD_RX_SG		  = 2,
115 	IPOIB_UD_TX_SG		  = (IPOIB_UD_MAX_MTU / MCLBYTES) + 2,
116 	IPOIB_CM_MAX_MTU	  = (64 * 1024),
117 	IPOIB_CM_TX_SG		  = (IPOIB_CM_MAX_MTU / MCLBYTES) + 2,
118 	IPOIB_CM_RX_SG		  = (IPOIB_CM_MAX_MTU / MJUMPAGESIZE),
119 	IPOIB_RX_RING_SIZE	  = 256,
120 	IPOIB_TX_RING_SIZE	  = 128,
121 	IPOIB_MAX_RX_SG		  = MAX(IPOIB_CM_RX_SG, IPOIB_UD_RX_SG),
122 	IPOIB_MAX_TX_SG		  = MAX(IPOIB_CM_TX_SG, IPOIB_UD_TX_SG),
123 	IPOIB_MAX_QUEUE_SIZE	  = 8192,
124 	IPOIB_MIN_QUEUE_SIZE	  = 2,
125 	IPOIB_CM_MAX_CONN_QP	  = 4096,
126 
127 	IPOIB_NUM_WC		  = 4,
128 
129 	IPOIB_MAX_PATH_REC_QUEUE  = 3,
130 	IPOIB_MAX_MCAST_QUEUE	  = 3,
131 
132 	IPOIB_FLAG_OPER_UP	  = 0,
133 	IPOIB_FLAG_INITIALIZED	  = 1,
134 	IPOIB_FLAG_ADMIN_UP	  = 2,
135 	IPOIB_PKEY_ASSIGNED	  = 3,
136 	IPOIB_PKEY_STOP		  = 4,
137 	IPOIB_FLAG_SUBINTERFACE	  = 5,
138 	IPOIB_MCAST_RUN		  = 6,
139 	IPOIB_STOP_REAPER	  = 7,
140 	IPOIB_FLAG_UMCAST	  = 10,
141 	IPOIB_FLAG_CSUM		  = 11,
142 
143 	IPOIB_MAX_BACKOFF_SECONDS = 16,
144 
145 	IPOIB_MCAST_FLAG_FOUND	  = 0,	/* used in set_multicast_list */
146 	IPOIB_MCAST_FLAG_SENDONLY = 1,
147 	IPOIB_MCAST_FLAG_BUSY	  = 2,	/* joining or already joined */
148 	IPOIB_MCAST_FLAG_ATTACHED = 3,
149 
150 	IPOIB_MAX_LRO_DESCRIPTORS = 8,
151 	IPOIB_LRO_MAX_AGGR 	  = 64,
152 
153 	MAX_SEND_CQE		  = 16,
154 	IPOIB_CM_COPYBREAK	  = 256,
155 };
156 
157 #define	IPOIB_OP_RECV   (1ul << 31)
158 #ifdef CONFIG_INFINIBAND_IPOIB_CM
159 #define	IPOIB_OP_CM     (1ul << 30)
160 #else
161 #define	IPOIB_OP_CM     (0)
162 #endif
163 
164 /* structs */
165 
166 struct ipoib_header {
167 	u8  hwaddr[INFINIBAND_ALEN];
168 	__be16	proto;
169 	u16	reserved;
170 };
171 
172 struct ipoib_pseudoheader {
173 	u8  hwaddr[INFINIBAND_ALEN];
174 };
175 
176 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
177 struct ipoib_mcast {
178 	struct ib_sa_mcmember_rec mcmember;
179 	struct ib_sa_multicast	 *mc;
180 	struct ipoib_ah		 *ah;
181 
182 	struct rb_node    rb_node;
183 	struct list_head  list;
184 
185 	unsigned long created;
186 	unsigned long backoff;
187 
188 	unsigned long flags;
189 	unsigned char logcount;
190 
191 	struct ifqueue pkt_queue;
192 
193 	struct ipoib_dev_priv *priv;
194 };
195 
196 struct ipoib_cm_rx_buf {
197 	struct mbuf *mb;
198 	u64		mapping[IPOIB_CM_RX_SG];
199 };
200 
201 struct ipoib_cm_tx_buf {
202 	struct mbuf *mb;
203 	u64		mapping[IPOIB_CM_TX_SG];
204 };
205 
206 struct ipoib_rx_buf {
207 	struct mbuf *mb;
208 	u64		mapping[IPOIB_UD_RX_SG];
209 };
210 
211 struct ipoib_tx_buf {
212 	struct mbuf *mb;
213 	u64		mapping[IPOIB_UD_TX_SG];
214 };
215 
216 struct ib_cm_id;
217 
218 struct ipoib_cm_data {
219 	__be32 qpn; /* High byte MUST be ignored on receive */
220 	__be32 mtu;
221 };
222 
223 /*
224  * Quoting 10.3.1 Queue Pair and EE Context States:
225  *
226  * Note, for QPs that are associated with an SRQ, the Consumer should take the
227  * QP through the Error State before invoking a Destroy QP or a Modify QP to the
228  * Reset State.  The Consumer may invoke the Destroy QP without first performing
229  * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
230  * Last WQE Reached Event. However, if the Consumer does not wait for the
231  * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
232  * leakage may occur. Therefore, it is good programming practice to tear down a
233  * QP that is associated with an SRQ by using the following process:
234  *
235  * - Put the QP in the Error State
236  * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
237  * - either:
238  *       drain the CQ by invoking the Poll CQ verb and either wait for CQ
239  *       to be empty or the number of Poll CQ operations has exceeded
240  *       CQ capacity size;
241  * - or
242  *       post another WR that completes on the same CQ and wait for this
243  *       WR to return as a WC;
244  * - and then invoke a Destroy QP or Reset QP.
245  *
246  * We use the second option and wait for a completion on the
247  * same CQ before destroying QPs attached to our SRQ.
248  */
249 
250 enum ipoib_cm_state {
251 	IPOIB_CM_RX_LIVE,
252 	IPOIB_CM_RX_ERROR, /* Ignored by stale task */
253 	IPOIB_CM_RX_FLUSH  /* Last WQE Reached event observed */
254 };
255 
256 struct ipoib_cm_rx {
257 	struct ib_cm_id	       *id;
258 	struct ib_qp	       *qp;
259 	struct ipoib_cm_rx_buf *rx_ring;
260 	struct list_head	list;
261 	struct ipoib_dev_priv	*priv;
262 	unsigned long		jiffies;
263 	enum ipoib_cm_state	state;
264 	int			recv_count;
265 };
266 
267 struct ipoib_cm_tx {
268 	struct ib_cm_id	    *id;
269 	struct ib_qp	    *qp;
270 	struct list_head     list;
271 	struct ipoib_dev_priv *priv;
272 	struct ipoib_path   *path;
273 	struct ipoib_cm_tx_buf *tx_ring;
274 	unsigned	     tx_head;
275 	unsigned	     tx_tail;
276 	unsigned long	     flags;
277 	u32		     mtu;	/* remote specified mtu, with grh. */
278 };
279 
280 struct ipoib_cm_dev_priv {
281 	struct ib_srq	       *srq;
282 	struct ipoib_cm_rx_buf *srq_ring;
283 	struct ib_cm_id	       *id;
284 	struct list_head	passive_ids;   /* state: LIVE */
285 	struct list_head	rx_error_list; /* state: ERROR */
286 	struct list_head	rx_flush_list; /* state: FLUSH, drain not started */
287 	struct list_head	rx_drain_list; /* state: FLUSH, drain started */
288 	struct list_head	rx_reap_list;  /* state: FLUSH, drain done */
289 	struct work_struct      start_task;
290 	struct work_struct      reap_task;
291 	struct work_struct      mb_task;
292 	struct work_struct      rx_reap_task;
293 	struct delayed_work     stale_task;
294 	struct ifqueue     	mb_queue;
295 	struct list_head	start_list;
296 	struct list_head	reap_list;
297 	struct ib_sge		rx_sge[IPOIB_CM_RX_SG];
298 	struct ib_recv_wr	rx_wr;
299 	int			nonsrq_conn_qp;
300 	int			max_cm_mtu;	/* Actual buf size. */
301 	int			num_frags;
302 };
303 
304 struct ipoib_ethtool_st {
305 	u16     coalesce_usecs;
306 	u16     max_coalesced_frames;
307 };
308 
309 /*
310  * Device private locking: network stack tx_lock protects members used
311  * in TX fast path, lock protects everything else.  lock nests inside
312  * of tx_lock (ie tx_lock must be acquired first if needed).
313  */
314 struct ipoib_dev_priv {
315 	spinlock_t lock;
316 
317 	struct ifnet *dev;
318 
319 	u8 broadcastaddr[INFINIBAND_ALEN];
320 
321 	unsigned long flags;
322 
323 	struct mutex vlan_mutex;
324 
325 	struct rb_root  path_tree;
326 	struct list_head path_list;
327 
328 	struct ipoib_mcast *broadcast;
329 	struct list_head multicast_list;
330 	struct rb_root multicast_tree;
331 
332 	struct delayed_work pkey_poll_task;
333 	struct delayed_work mcast_task;
334 	struct work_struct carrier_on_task;
335 	struct work_struct flush_light;
336 	struct work_struct flush_normal;
337 	struct work_struct flush_heavy;
338 	struct work_struct restart_task;
339 	struct delayed_work ah_reap_task;
340 
341 	struct ib_device *ca;
342 	u8		  port;
343 	u16		  pkey;
344 	u16		  pkey_index;
345 	struct ib_pd	 *pd;
346 	struct ib_mr	 *mr;
347 	struct ib_cq	 *recv_cq;
348 	struct ib_cq	 *send_cq;
349 	struct ib_qp	 *qp;
350 	u32		  qkey;
351 
352 	union ib_gid local_gid;
353 	u16	     local_lid;
354 
355 	unsigned int admin_mtu;		/* User selected MTU, no GRH. */
356 	unsigned int mcast_mtu;		/* Minus GRH bytes, from mcast group. */
357 	unsigned int max_ib_mtu;	/* Without header, actual buf size. */
358 
359 	struct ipoib_rx_buf *rx_ring;
360 
361 	struct ipoib_tx_buf *tx_ring;
362 	unsigned	     tx_head;
363 	unsigned	     tx_tail;
364 	struct ib_sge	     tx_sge[IPOIB_MAX_TX_SG];
365 	struct ib_send_wr    tx_wr;
366 	unsigned	     tx_outstanding;
367 	struct ib_wc	     send_wc[MAX_SEND_CQE];
368 
369 	struct ib_recv_wr    rx_wr;
370 	struct ib_sge	     rx_sge[IPOIB_MAX_RX_SG];
371 
372 	struct ib_wc ibwc[IPOIB_NUM_WC];
373 
374 	struct list_head dead_ahs;
375 
376 	struct ib_event_handler event_handler;
377 
378 	struct ifnet *parent;
379 	struct list_head child_intfs;
380 	struct list_head list;
381 
382 #ifdef CONFIG_INFINIBAND_IPOIB_CM
383 	struct ipoib_cm_dev_priv cm;
384 #endif
385 
386 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
387 	struct list_head fs_list;
388 	struct dentry *mcg_dentry;
389 	struct dentry *path_dentry;
390 #endif
391 	int	hca_caps;
392 	struct ipoib_ethtool_st ethtool;
393 	struct timer_list poll_timer;
394 };
395 
396 struct ipoib_ah {
397 	struct ipoib_dev_priv *priv;
398 	struct ib_ah	  *ah;
399 	struct list_head   list;
400 	struct kref	   ref;
401 	unsigned	   last_send;
402 };
403 
404 struct ipoib_path {
405 	struct ipoib_dev_priv *priv;
406 	struct rb_node	      rb_node;
407 	struct list_head      list;
408 #ifdef CONFIG_INFINIBAND_IPOIB_CM
409 	uint8_t		      hwaddr[INFINIBAND_ALEN];
410 	struct ipoib_cm_tx   *cm;
411 #endif
412 	struct ipoib_ah      *ah;
413 	struct ib_sa_path_rec pathrec;
414 	struct ifqueue	      queue;
415 
416 	int		      query_id;
417 	struct ib_sa_query   *query;
418 	struct completion     done;
419 
420 	int  		      valid;
421 };
422 
423 /* UD Only transmits encap len but we want the two sizes to be symmetrical. */
424 #define IPOIB_UD_MTU(ib_mtu)		(ib_mtu - IPOIB_ENCAP_LEN)
425 #define	IPOIB_CM_MTU(ib_mtu)		(ib_mtu - 0x10)
426 
427 #define	IPOIB_IS_MULTICAST(addr)	((addr)[4] == 0xff)
428 
429 extern struct workqueue_struct *ipoib_workqueue;
430 
431 #define IPOIB_MTAP_PROTO(_ifp, _m, _proto)			\
432 do {								\
433 	if (bpf_peers_present((_ifp)->if_bpf)) {		\
434 		M_ASSERTVALID(_m);				\
435 		ipoib_mtap_proto((_ifp), (_m), (_proto));	\
436 	}							\
437 } while (0)
438 
439 /* functions */
440 void ipoib_mtap_proto(struct ifnet *ifp, struct mbuf *mb, uint16_t proto);
441 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
442 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
443 
444 struct ipoib_ah *ipoib_create_ah(struct ipoib_dev_priv *,
445 				 struct ib_pd *pd, struct ib_ah_attr *attr);
446 void ipoib_free_ah(struct kref *kref);
447 static inline void ipoib_put_ah(struct ipoib_ah *ah)
448 {
449 	kref_put(&ah->ref, ipoib_free_ah);
450 }
451 
452 int ipoib_open(struct ipoib_dev_priv *priv);
453 int ipoib_add_pkey_attr(struct ipoib_dev_priv *priv);
454 int ipoib_add_umcast_attr(struct ipoib_dev_priv *priv);
455 
456 void ipoib_demux(struct ifnet *ifp, struct mbuf *m, u_short proto);
457 
458 void ipoib_send(struct ipoib_dev_priv *priv, struct mbuf *mb,
459 		struct ipoib_ah *address, u32 qpn);
460 void ipoib_reap_ah(struct work_struct *work);
461 
462 void ipoib_mark_paths_invalid(struct ipoib_dev_priv *priv);
463 void ipoib_flush_paths(struct ipoib_dev_priv *priv);
464 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
465 
466 int ipoib_ib_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca,
467     int port);
468 void ipoib_ib_dev_flush_light(struct work_struct *work);
469 void ipoib_ib_dev_flush_normal(struct work_struct *work);
470 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
471 void ipoib_pkey_event(struct work_struct *work);
472 void ipoib_ib_dev_cleanup(struct ipoib_dev_priv *priv);
473 
474 int ipoib_ib_dev_open(struct ipoib_dev_priv *priv);
475 int ipoib_ib_dev_up(struct ipoib_dev_priv *priv);
476 int ipoib_ib_dev_down(struct ipoib_dev_priv *priv, int flush);
477 int ipoib_ib_dev_stop(struct ipoib_dev_priv *priv, int flush);
478 
479 int ipoib_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca, int port);
480 void ipoib_dev_cleanup(struct ipoib_dev_priv *priv);
481 
482 void ipoib_mcast_join_task(struct work_struct *work);
483 void ipoib_mcast_carrier_on_task(struct work_struct *work);
484 void ipoib_mcast_send(struct ipoib_dev_priv *priv, void *mgid, struct mbuf *mb);
485 
486 void ipoib_mcast_restart_task(struct work_struct *work);
487 void ipoib_mcast_restart(struct ipoib_dev_priv *);
488 int ipoib_mcast_start_thread(struct ipoib_dev_priv *priv);
489 int ipoib_mcast_stop_thread(struct ipoib_dev_priv *priv, int flush);
490 
491 void ipoib_mcast_dev_down(struct ipoib_dev_priv *priv);
492 void ipoib_mcast_dev_flush(struct ipoib_dev_priv *priv);
493 
494 void ipoib_path_free(struct ipoib_dev_priv *priv, struct ipoib_path *path);
495 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
496 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct ipoib_dev_priv *priv);
497 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
498 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
499 				  union ib_gid *gid,
500 				  unsigned long *created,
501 				  unsigned int *queuelen,
502 				  unsigned int *complete,
503 				  unsigned int *send_only);
504 
505 struct ipoib_path_iter *ipoib_path_iter_init(struct ipoib_dev_priv *priv);
506 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
507 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
508 			  struct ipoib_path *path);
509 #endif
510 
511 int ipoib_change_mtu(struct ipoib_dev_priv *priv, int new_mtu);
512 
513 int ipoib_mcast_attach(struct ipoib_dev_priv *priv, u16 mlid,
514 		       union ib_gid *mgid, int set_qkey);
515 
516 int ipoib_init_qp(struct ipoib_dev_priv *priv);
517 int ipoib_transport_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca);
518 void ipoib_transport_dev_cleanup(struct ipoib_dev_priv *priv);
519 
520 void ipoib_event(struct ib_event_handler *handler,
521 		 struct ib_event *record);
522 
523 void ipoib_pkey_poll(struct work_struct *work);
524 int ipoib_pkey_dev_delay_open(struct ipoib_dev_priv *priv);
525 void ipoib_drain_cq(struct ipoib_dev_priv *priv);
526 
527 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req, int max);
528 void ipoib_dma_unmap_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
529 int ipoib_poll_tx(struct ipoib_dev_priv *priv);
530 
531 void ipoib_dma_unmap_rx(struct ipoib_dev_priv *priv, struct ipoib_rx_buf *rx_req);
532 void ipoib_dma_mb(struct ipoib_dev_priv *priv, struct mbuf *mb, unsigned int length);
533 struct mbuf *ipoib_alloc_map_mb(struct ipoib_dev_priv *priv, struct ipoib_rx_buf *rx_req, int size);
534 
535 
536 void ipoib_set_ethtool_ops(struct ifnet *dev);
537 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
538 
539 #ifdef CONFIG_INFINIBAND_IPOIB_CM
540 
541 #define IPOIB_FLAGS_RC		0x80
542 #define IPOIB_FLAGS_UC		0x40
543 
544 /* We don't support UC connections at the moment */
545 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
546 
547 extern int ipoib_max_conn_qp;
548 
549 static inline int ipoib_cm_admin_enabled(struct ipoib_dev_priv *priv)
550 {
551 	return IPOIB_CM_SUPPORTED(IF_LLADDR(priv->dev));
552 }
553 
554 static inline int ipoib_cm_enabled(struct ipoib_dev_priv *priv, uint8_t *hwaddr)
555 {
556 	return IPOIB_CM_SUPPORTED(hwaddr);
557 }
558 
559 static inline int ipoib_cm_up(struct ipoib_path *path)
560 
561 {
562 	return test_bit(IPOIB_FLAG_OPER_UP, &path->cm->flags);
563 }
564 
565 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_path *path)
566 {
567 	return path->cm;
568 }
569 
570 static inline void ipoib_cm_set(struct ipoib_path *path, struct ipoib_cm_tx *tx)
571 {
572 	path->cm = tx;
573 }
574 
575 static inline int ipoib_cm_has_srq(struct ipoib_dev_priv *priv)
576 {
577 	return !!priv->cm.srq;
578 }
579 
580 static inline unsigned int ipoib_cm_max_mtu(struct ipoib_dev_priv *priv)
581 {
582 	return priv->cm.max_cm_mtu;
583 }
584 
585 void ipoib_cm_send(struct ipoib_dev_priv *priv, struct mbuf *mb, struct ipoib_cm_tx *tx);
586 int ipoib_cm_dev_open(struct ipoib_dev_priv *priv);
587 void ipoib_cm_dev_stop(struct ipoib_dev_priv *priv);
588 int ipoib_cm_dev_init(struct ipoib_dev_priv *priv);
589 int ipoib_cm_add_mode_attr(struct ipoib_dev_priv *priv);
590 void ipoib_cm_dev_cleanup(struct ipoib_dev_priv *priv);
591 struct ipoib_cm_tx *ipoib_cm_create_tx(struct ipoib_dev_priv *priv,
592     struct ipoib_path *path);
593 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
594 void ipoib_cm_mb_too_long(struct ipoib_dev_priv *priv, struct mbuf *mb,
595 			   unsigned int mtu);
596 void ipoib_cm_handle_rx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc);
597 void ipoib_cm_handle_tx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc);
598 #else
599 
600 struct ipoib_cm_tx;
601 
602 #define ipoib_max_conn_qp 0
603 
604 static inline int ipoib_cm_admin_enabled(struct ipoib_dev_priv *priv)
605 {
606 	return 0;
607 }
608 static inline int ipoib_cm_enabled(struct ipoib_dev_priv *priv, uint8_t *hwaddr)
609 
610 {
611 	return 0;
612 }
613 
614 static inline int ipoib_cm_up(struct ipoib_path *path)
615 
616 {
617 	return 0;
618 }
619 
620 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_path *path)
621 {
622 	return NULL;
623 }
624 
625 static inline void ipoib_cm_set(struct ipoib_path *path, struct ipoib_cm_tx *tx)
626 {
627 }
628 
629 static inline int ipoib_cm_has_srq(struct ipoib_dev_priv *priv)
630 {
631 	return 0;
632 }
633 
634 static inline unsigned int ipoib_cm_max_mtu(struct ipoib_dev_priv *priv)
635 {
636 	return 0;
637 }
638 
639 static inline
640 void ipoib_cm_send(struct ipoib_dev_priv *priv, struct mbuf *mb, struct ipoib_cm_tx *tx)
641 {
642 	return;
643 }
644 
645 static inline
646 int ipoib_cm_dev_open(struct ipoib_dev_priv *priv)
647 {
648 	return 0;
649 }
650 
651 static inline
652 void ipoib_cm_dev_stop(struct ipoib_dev_priv *priv)
653 {
654 	return;
655 }
656 
657 static inline
658 int ipoib_cm_dev_init(struct ipoib_dev_priv *priv)
659 {
660 	return -ENOSYS;
661 }
662 
663 static inline
664 void ipoib_cm_dev_cleanup(struct ipoib_dev_priv *priv)
665 {
666 	return;
667 }
668 
669 static inline
670 struct ipoib_cm_tx *ipoib_cm_create_tx(struct ipoib_dev_priv *priv, struct ipoib_path *path)
671 {
672 	return NULL;
673 }
674 
675 static inline
676 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
677 {
678 	return;
679 }
680 
681 static inline
682 int ipoib_cm_add_mode_attr(struct ipoib_dev_priv *priv)
683 {
684 	return 0;
685 }
686 
687 static inline void ipoib_cm_mb_too_long(struct ipoib_dev_priv *priv, struct mbuf *mb,
688 					 unsigned int mtu)
689 {
690 	m_freem(mb);
691 }
692 
693 static inline void ipoib_cm_handle_rx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc)
694 {
695 }
696 
697 static inline void ipoib_cm_handle_tx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc)
698 {
699 }
700 #endif
701 
702 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
703 void ipoib_create_debug_files(struct ipoib_dev_priv *priv);
704 void ipoib_delete_debug_files(struct ipoib_dev_priv *priv);
705 int ipoib_register_debugfs(void);
706 void ipoib_unregister_debugfs(void);
707 #else
708 static inline void ipoib_create_debug_files(struct ipoib_dev_priv *priv) { }
709 static inline void ipoib_delete_debug_files(struct ipoib_dev_priv *priv) { }
710 static inline int ipoib_register_debugfs(void) { return 0; }
711 static inline void ipoib_unregister_debugfs(void) { }
712 #endif
713 
714 #define ipoib_printk(level, priv, format, arg...)	\
715 	printk(level "%s: " format, if_name(((struct ipoib_dev_priv *) priv)->dev), ## arg)
716 #define ipoib_warn(priv, format, arg...)		\
717 	ipoib_printk(KERN_WARNING, priv, format , ## arg)
718 
719 extern int ipoib_sendq_size;
720 extern int ipoib_recvq_size;
721 
722 extern struct ib_sa_client ipoib_sa_client;
723 
724 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
725 extern int ipoib_debug_level;
726 
727 #define ipoib_dbg(priv, format, arg...)			\
728 	do {						\
729 		if (ipoib_debug_level > 0)			\
730 			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
731 	} while (0)
732 #define ipoib_dbg_mcast(priv, format, arg...)		\
733 	do {						\
734 		if (mcast_debug_level > 0)		\
735 			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
736 	} while (0)
737 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
738 #define ipoib_dbg(priv, format, arg...)			\
739 	do { (void) (priv); } while (0)
740 #define ipoib_dbg_mcast(priv, format, arg...)		\
741 	do { (void) (priv); } while (0)
742 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
743 
744 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
745 #define ipoib_dbg_data(priv, format, arg...)		\
746 	do {						\
747 		if (data_debug_level > 0)		\
748 			ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
749 	} while (0)
750 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
751 #define ipoib_dbg_data(priv, format, arg...)		\
752 	do { (void) (priv); } while (0)
753 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
754 
755 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
756 
757 #endif /* _IPOIB_H */
758