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 <linux/list.h>
39 #include <linux/skbuff.h>
40 #include <linux/netdevice.h>
41 #include <linux/workqueue.h>
42 #include <linux/kref.h>
43 #include <linux/if_infiniband.h>
44 #include <linux/mutex.h>
45
46 #include <net/neighbour.h>
47 #include <net/sch_generic.h>
48
49 #include <linux/atomic.h>
50
51 #include <rdma/ib_verbs.h>
52 #include <rdma/ib_pack.h>
53 #include <rdma/ib_sa.h>
54 #include <linux/sched.h>
55
56 /* constants */
57
58 enum ipoib_flush_level {
59 IPOIB_FLUSH_LIGHT,
60 IPOIB_FLUSH_NORMAL,
61 IPOIB_FLUSH_HEAVY
62 };
63
64 enum {
65 IPOIB_ENCAP_LEN = 4,
66
67 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
68 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */
69
70 IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */
71 IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN,
72 IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
73 IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
74 IPOIB_RX_RING_SIZE = 256,
75 IPOIB_TX_RING_SIZE = 128,
76 IPOIB_MAX_QUEUE_SIZE = 8192,
77 IPOIB_MIN_QUEUE_SIZE = 2,
78 IPOIB_CM_MAX_CONN_QP = 4096,
79
80 IPOIB_NUM_WC = 4,
81
82 IPOIB_MAX_PATH_REC_QUEUE = 3,
83 IPOIB_MAX_MCAST_QUEUE = 3,
84
85 IPOIB_FLAG_OPER_UP = 0,
86 IPOIB_FLAG_INITIALIZED = 1,
87 IPOIB_FLAG_ADMIN_UP = 2,
88 IPOIB_PKEY_ASSIGNED = 3,
89 IPOIB_PKEY_STOP = 4,
90 IPOIB_FLAG_SUBINTERFACE = 5,
91 IPOIB_MCAST_RUN = 6,
92 IPOIB_STOP_REAPER = 7,
93 IPOIB_FLAG_ADMIN_CM = 9,
94 IPOIB_FLAG_UMCAST = 10,
95
96 IPOIB_MAX_BACKOFF_SECONDS = 16,
97
98 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
99 IPOIB_MCAST_FLAG_SENDONLY = 1,
100 IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */
101 IPOIB_MCAST_FLAG_ATTACHED = 3,
102
103 MAX_SEND_CQE = 16,
104 IPOIB_CM_COPYBREAK = 256,
105 };
106
107 #define IPOIB_OP_RECV (1ul << 31)
108 #ifdef CONFIG_INFINIBAND_IPOIB_CM
109 #define IPOIB_OP_CM (1ul << 30)
110 #else
111 #define IPOIB_OP_CM (0)
112 #endif
113
114 /* structs */
115
116 struct ipoib_header {
117 __be16 proto;
118 u16 reserved;
119 };
120
121 struct ipoib_cb {
122 struct qdisc_skb_cb qdisc_cb;
123 u8 hwaddr[INFINIBAND_ALEN];
124 };
125
126 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
127 struct ipoib_mcast {
128 struct ib_sa_mcmember_rec mcmember;
129 struct ib_sa_multicast *mc;
130 struct ipoib_ah *ah;
131
132 struct rb_node rb_node;
133 struct list_head list;
134
135 unsigned long created;
136 unsigned long backoff;
137
138 unsigned long flags;
139 unsigned char logcount;
140
141 struct list_head neigh_list;
142
143 struct sk_buff_head pkt_queue;
144
145 struct net_device *dev;
146 };
147
148 struct ipoib_rx_buf {
149 struct sk_buff *skb;
150 u64 mapping[IPOIB_UD_RX_SG];
151 };
152
153 struct ipoib_tx_buf {
154 struct sk_buff *skb;
155 u64 mapping[MAX_SKB_FRAGS + 1];
156 };
157
158 struct ipoib_cm_tx_buf {
159 struct sk_buff *skb;
160 u64 mapping;
161 };
162
163 struct ib_cm_id;
164
165 struct ipoib_cm_data {
166 __be32 qpn; /* High byte MUST be ignored on receive */
167 __be32 mtu;
168 };
169
170 /*
171 * Quoting 10.3.1 Queue Pair and EE Context States:
172 *
173 * Note, for QPs that are associated with an SRQ, the Consumer should take the
174 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
175 * Reset State. The Consumer may invoke the Destroy QP without first performing
176 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
177 * Last WQE Reached Event. However, if the Consumer does not wait for the
178 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
179 * leakage may occur. Therefore, it is good programming practice to tear down a
180 * QP that is associated with an SRQ by using the following process:
181 *
182 * - Put the QP in the Error State
183 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
184 * - either:
185 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
186 * to be empty or the number of Poll CQ operations has exceeded
187 * CQ capacity size;
188 * - or
189 * post another WR that completes on the same CQ and wait for this
190 * WR to return as a WC;
191 * - and then invoke a Destroy QP or Reset QP.
192 *
193 * We use the second option and wait for a completion on the
194 * same CQ before destroying QPs attached to our SRQ.
195 */
196
197 enum ipoib_cm_state {
198 IPOIB_CM_RX_LIVE,
199 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
200 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
201 };
202
203 struct ipoib_cm_rx {
204 struct ib_cm_id *id;
205 struct ib_qp *qp;
206 struct ipoib_cm_rx_buf *rx_ring;
207 struct list_head list;
208 struct net_device *dev;
209 unsigned long jiffies;
210 enum ipoib_cm_state state;
211 int recv_count;
212 };
213
214 struct ipoib_cm_tx {
215 struct ib_cm_id *id;
216 struct ib_qp *qp;
217 struct list_head list;
218 struct net_device *dev;
219 struct ipoib_neigh *neigh;
220 struct ipoib_path *path;
221 struct ipoib_cm_tx_buf *tx_ring;
222 unsigned tx_head;
223 unsigned tx_tail;
224 unsigned long flags;
225 u32 mtu;
226 };
227
228 struct ipoib_cm_rx_buf {
229 struct sk_buff *skb;
230 u64 mapping[IPOIB_CM_RX_SG];
231 };
232
233 struct ipoib_cm_dev_priv {
234 struct ib_srq *srq;
235 struct ipoib_cm_rx_buf *srq_ring;
236 struct ib_cm_id *id;
237 struct list_head passive_ids; /* state: LIVE */
238 struct list_head rx_error_list; /* state: ERROR */
239 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
240 struct list_head rx_drain_list; /* state: FLUSH, drain started */
241 struct list_head rx_reap_list; /* state: FLUSH, drain done */
242 struct work_struct start_task;
243 struct work_struct reap_task;
244 struct work_struct skb_task;
245 struct work_struct rx_reap_task;
246 struct delayed_work stale_task;
247 struct sk_buff_head skb_queue;
248 struct list_head start_list;
249 struct list_head reap_list;
250 struct ib_wc ibwc[IPOIB_NUM_WC];
251 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
252 struct ib_recv_wr rx_wr;
253 int nonsrq_conn_qp;
254 int max_cm_mtu;
255 int num_frags;
256 };
257
258 struct ipoib_ethtool_st {
259 u16 coalesce_usecs;
260 u16 max_coalesced_frames;
261 };
262
263 /*
264 * Device private locking: network stack tx_lock protects members used
265 * in TX fast path, lock protects everything else. lock nests inside
266 * of tx_lock (ie tx_lock must be acquired first if needed).
267 */
268 struct ipoib_dev_priv {
269 spinlock_t lock;
270
271 struct net_device *dev;
272
273 struct napi_struct napi;
274
275 unsigned long flags;
276
277 struct mutex vlan_mutex;
278
279 struct rb_root path_tree;
280 struct list_head path_list;
281
282 struct ipoib_mcast *broadcast;
283 struct list_head multicast_list;
284 struct rb_root multicast_tree;
285
286 struct delayed_work pkey_poll_task;
287 struct delayed_work mcast_task;
288 struct work_struct carrier_on_task;
289 struct work_struct flush_light;
290 struct work_struct flush_normal;
291 struct work_struct flush_heavy;
292 struct work_struct restart_task;
293 struct delayed_work ah_reap_task;
294
295 struct ib_device *ca;
296 u8 port;
297 u16 pkey;
298 u16 pkey_index;
299 struct ib_pd *pd;
300 struct ib_mr *mr;
301 struct ib_cq *recv_cq;
302 struct ib_cq *send_cq;
303 struct ib_qp *qp;
304 u32 qkey;
305
306 union ib_gid local_gid;
307 u16 local_lid;
308
309 unsigned int admin_mtu;
310 unsigned int mcast_mtu;
311 unsigned int max_ib_mtu;
312
313 struct ipoib_rx_buf *rx_ring;
314
315 struct ipoib_tx_buf *tx_ring;
316 unsigned tx_head;
317 unsigned tx_tail;
318 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
319 struct ib_send_wr tx_wr;
320 unsigned tx_outstanding;
321 struct ib_wc send_wc[MAX_SEND_CQE];
322
323 struct ib_recv_wr rx_wr;
324 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
325
326 struct ib_wc ibwc[IPOIB_NUM_WC];
327
328 struct list_head dead_ahs;
329
330 struct ib_event_handler event_handler;
331
332 struct net_device *parent;
333 struct list_head child_intfs;
334 struct list_head list;
335
336 #ifdef CONFIG_INFINIBAND_IPOIB_CM
337 struct ipoib_cm_dev_priv cm;
338 #endif
339
340 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
341 struct list_head fs_list;
342 struct dentry *mcg_dentry;
343 struct dentry *path_dentry;
344 #endif
345 int hca_caps;
346 struct ipoib_ethtool_st ethtool;
347 struct timer_list poll_timer;
348 };
349
350 struct ipoib_ah {
351 struct net_device *dev;
352 struct ib_ah *ah;
353 struct list_head list;
354 struct kref ref;
355 unsigned last_send;
356 };
357
358 struct ipoib_path {
359 struct net_device *dev;
360 struct ib_sa_path_rec pathrec;
361 struct ipoib_ah *ah;
362 struct sk_buff_head queue;
363
364 struct list_head neigh_list;
365
366 int query_id;
367 struct ib_sa_query *query;
368 struct completion done;
369
370 struct rb_node rb_node;
371 struct list_head list;
372 int valid;
373 };
374
375 struct ipoib_neigh {
376 struct ipoib_ah *ah;
377 #ifdef CONFIG_INFINIBAND_IPOIB_CM
378 struct ipoib_cm_tx *cm;
379 #endif
380 union ib_gid dgid;
381 struct sk_buff_head queue;
382
383 struct neighbour *neighbour;
384 struct net_device *dev;
385
386 struct list_head list;
387 };
388
389 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
390 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
391
ipoib_ud_need_sg(unsigned int ib_mtu)392 static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
393 {
394 return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
395 }
396
397 /*
398 * We stash a pointer to our private neighbour information after our
399 * hardware address in neigh->ha. The ALIGN() expression here makes
400 * sure that this pointer is stored aligned so that an unaligned
401 * load is not needed to dereference it.
402 */
to_ipoib_neigh(struct neighbour * neigh)403 static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
404 {
405 return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
406 INFINIBAND_ALEN, sizeof(void *));
407 }
408
409 struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh,
410 struct net_device *dev);
411 void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh);
412
413 extern struct workqueue_struct *ipoib_workqueue;
414
415 /* functions */
416
417 int ipoib_poll(struct napi_struct *napi, int budget);
418 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
419 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
420
421 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
422 struct ib_pd *pd, struct ib_ah_attr *attr);
423 void ipoib_free_ah(struct kref *kref);
ipoib_put_ah(struct ipoib_ah * ah)424 static inline void ipoib_put_ah(struct ipoib_ah *ah)
425 {
426 kref_put(&ah->ref, ipoib_free_ah);
427 }
428
429 int ipoib_open(struct net_device *dev);
430 int ipoib_add_pkey_attr(struct net_device *dev);
431 int ipoib_add_umcast_attr(struct net_device *dev);
432
433 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
434 struct ipoib_ah *address, u32 qpn);
435 void ipoib_reap_ah(struct work_struct *work);
436
437 void ipoib_mark_paths_invalid(struct net_device *dev);
438 void ipoib_flush_paths(struct net_device *dev);
439 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
440
441 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
442 void ipoib_ib_dev_flush_light(struct work_struct *work);
443 void ipoib_ib_dev_flush_normal(struct work_struct *work);
444 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
445 void ipoib_pkey_event(struct work_struct *work);
446 void ipoib_ib_dev_cleanup(struct net_device *dev);
447
448 int ipoib_ib_dev_open(struct net_device *dev);
449 int ipoib_ib_dev_up(struct net_device *dev);
450 int ipoib_ib_dev_down(struct net_device *dev, int flush);
451 int ipoib_ib_dev_stop(struct net_device *dev, int flush);
452
453 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
454 void ipoib_dev_cleanup(struct net_device *dev);
455
456 void ipoib_mcast_join_task(struct work_struct *work);
457 void ipoib_mcast_carrier_on_task(struct work_struct *work);
458 void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb);
459
460 void ipoib_mcast_restart_task(struct work_struct *work);
461 int ipoib_mcast_start_thread(struct net_device *dev);
462 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
463
464 void ipoib_mcast_dev_down(struct net_device *dev);
465 void ipoib_mcast_dev_flush(struct net_device *dev);
466
467 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
468 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
469 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
470 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
471 union ib_gid *gid,
472 unsigned long *created,
473 unsigned int *queuelen,
474 unsigned int *complete,
475 unsigned int *send_only);
476
477 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
478 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
479 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
480 struct ipoib_path *path);
481 #endif
482
483 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
484 union ib_gid *mgid, int set_qkey);
485
486 int ipoib_init_qp(struct net_device *dev);
487 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
488 void ipoib_transport_dev_cleanup(struct net_device *dev);
489
490 void ipoib_event(struct ib_event_handler *handler,
491 struct ib_event *record);
492
493 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
494 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
495
496 void ipoib_pkey_poll(struct work_struct *work);
497 int ipoib_pkey_dev_delay_open(struct net_device *dev);
498 void ipoib_drain_cq(struct net_device *dev);
499
500 void ipoib_set_ethtool_ops(struct net_device *dev);
501 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
502
503 #ifdef CONFIG_INFINIBAND_IPOIB_CM
504
505 #define IPOIB_FLAGS_RC 0x80
506 #define IPOIB_FLAGS_UC 0x40
507
508 /* We don't support UC connections at the moment */
509 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
510
511 extern int ipoib_max_conn_qp;
512
ipoib_cm_admin_enabled(struct net_device * dev)513 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
514 {
515 struct ipoib_dev_priv *priv = netdev_priv(dev);
516 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
517 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
518 }
519
ipoib_cm_enabled(struct net_device * dev,struct neighbour * n)520 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
521 {
522 struct ipoib_dev_priv *priv = netdev_priv(dev);
523 return IPOIB_CM_SUPPORTED(n->ha) &&
524 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
525 }
526
ipoib_cm_up(struct ipoib_neigh * neigh)527 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
528
529 {
530 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
531 }
532
ipoib_cm_get(struct ipoib_neigh * neigh)533 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
534 {
535 return neigh->cm;
536 }
537
ipoib_cm_set(struct ipoib_neigh * neigh,struct ipoib_cm_tx * tx)538 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
539 {
540 neigh->cm = tx;
541 }
542
ipoib_cm_has_srq(struct net_device * dev)543 static inline int ipoib_cm_has_srq(struct net_device *dev)
544 {
545 struct ipoib_dev_priv *priv = netdev_priv(dev);
546 return !!priv->cm.srq;
547 }
548
ipoib_cm_max_mtu(struct net_device * dev)549 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
550 {
551 struct ipoib_dev_priv *priv = netdev_priv(dev);
552 return priv->cm.max_cm_mtu;
553 }
554
555 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
556 int ipoib_cm_dev_open(struct net_device *dev);
557 void ipoib_cm_dev_stop(struct net_device *dev);
558 int ipoib_cm_dev_init(struct net_device *dev);
559 int ipoib_cm_add_mode_attr(struct net_device *dev);
560 void ipoib_cm_dev_cleanup(struct net_device *dev);
561 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
562 struct ipoib_neigh *neigh);
563 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
564 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
565 unsigned int mtu);
566 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
567 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
568 #else
569
570 struct ipoib_cm_tx;
571
572 #define ipoib_max_conn_qp 0
573
ipoib_cm_admin_enabled(struct net_device * dev)574 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
575 {
576 return 0;
577 }
ipoib_cm_enabled(struct net_device * dev,struct neighbour * n)578 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
579
580 {
581 return 0;
582 }
583
ipoib_cm_up(struct ipoib_neigh * neigh)584 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
585
586 {
587 return 0;
588 }
589
ipoib_cm_get(struct ipoib_neigh * neigh)590 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
591 {
592 return NULL;
593 }
594
ipoib_cm_set(struct ipoib_neigh * neigh,struct ipoib_cm_tx * tx)595 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
596 {
597 }
598
ipoib_cm_has_srq(struct net_device * dev)599 static inline int ipoib_cm_has_srq(struct net_device *dev)
600 {
601 return 0;
602 }
603
ipoib_cm_max_mtu(struct net_device * dev)604 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
605 {
606 return 0;
607 }
608
609 static inline
ipoib_cm_send(struct net_device * dev,struct sk_buff * skb,struct ipoib_cm_tx * tx)610 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
611 {
612 return;
613 }
614
615 static inline
ipoib_cm_dev_open(struct net_device * dev)616 int ipoib_cm_dev_open(struct net_device *dev)
617 {
618 return 0;
619 }
620
621 static inline
ipoib_cm_dev_stop(struct net_device * dev)622 void ipoib_cm_dev_stop(struct net_device *dev)
623 {
624 return;
625 }
626
627 static inline
ipoib_cm_dev_init(struct net_device * dev)628 int ipoib_cm_dev_init(struct net_device *dev)
629 {
630 return -ENOSYS;
631 }
632
633 static inline
ipoib_cm_dev_cleanup(struct net_device * dev)634 void ipoib_cm_dev_cleanup(struct net_device *dev)
635 {
636 return;
637 }
638
639 static inline
ipoib_cm_create_tx(struct net_device * dev,struct ipoib_path * path,struct ipoib_neigh * neigh)640 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
641 struct ipoib_neigh *neigh)
642 {
643 return NULL;
644 }
645
646 static inline
ipoib_cm_destroy_tx(struct ipoib_cm_tx * tx)647 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
648 {
649 return;
650 }
651
652 static inline
ipoib_cm_add_mode_attr(struct net_device * dev)653 int ipoib_cm_add_mode_attr(struct net_device *dev)
654 {
655 return 0;
656 }
657
ipoib_cm_skb_too_long(struct net_device * dev,struct sk_buff * skb,unsigned int mtu)658 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
659 unsigned int mtu)
660 {
661 dev_kfree_skb_any(skb);
662 }
663
ipoib_cm_handle_rx_wc(struct net_device * dev,struct ib_wc * wc)664 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
665 {
666 }
667
ipoib_cm_handle_tx_wc(struct net_device * dev,struct ib_wc * wc)668 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
669 {
670 }
671 #endif
672
673 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
674 void ipoib_create_debug_files(struct net_device *dev);
675 void ipoib_delete_debug_files(struct net_device *dev);
676 int ipoib_register_debugfs(void);
677 void ipoib_unregister_debugfs(void);
678 #else
ipoib_create_debug_files(struct net_device * dev)679 static inline void ipoib_create_debug_files(struct net_device *dev) { }
ipoib_delete_debug_files(struct net_device * dev)680 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
ipoib_register_debugfs(void)681 static inline int ipoib_register_debugfs(void) { return 0; }
ipoib_unregister_debugfs(void)682 static inline void ipoib_unregister_debugfs(void) { }
683 #endif
684
685 #define ipoib_printk(level, priv, format, arg...) \
686 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
687 #define ipoib_warn(priv, format, arg...) \
688 ipoib_printk(KERN_WARNING, priv, format , ## arg)
689
690 extern int ipoib_sendq_size;
691 extern int ipoib_recvq_size;
692
693 extern struct ib_sa_client ipoib_sa_client;
694
695 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
696 extern int ipoib_debug_level;
697
698 #define ipoib_dbg(priv, format, arg...) \
699 do { \
700 if (ipoib_debug_level > 0) \
701 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
702 } while (0)
703 #define ipoib_dbg_mcast(priv, format, arg...) \
704 do { \
705 if (mcast_debug_level > 0) \
706 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
707 } while (0)
708 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
709 #define ipoib_dbg(priv, format, arg...) \
710 do { (void) (priv); } while (0)
711 #define ipoib_dbg_mcast(priv, format, arg...) \
712 do { (void) (priv); } while (0)
713 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
714
715 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
716 #define ipoib_dbg_data(priv, format, arg...) \
717 do { \
718 if (data_debug_level > 0) \
719 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
720 } while (0)
721 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
722 #define ipoib_dbg_data(priv, format, arg...) \
723 do { (void) (priv); } while (0)
724 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
725
726 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
727
728 #endif /* _IPOIB_H */
729