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
48 #include <asm/atomic.h>
49
50 #include <rdma/ib_verbs.h>
51 #include <rdma/ib_pack.h>
52 #include <rdma/ib_sa.h>
53 #include <linux/sched.h>
54
55 /* constants */
56
57 enum ipoib_flush_level {
58 IPOIB_FLUSH_LIGHT,
59 IPOIB_FLUSH_NORMAL,
60 IPOIB_FLUSH_HEAVY
61 };
62
63 enum {
64 IPOIB_ENCAP_LEN = 4,
65
66 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
67 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */
68
69 IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */
70 IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN,
71 IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
72 IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
73 IPOIB_RX_RING_SIZE = 256,
74 IPOIB_TX_RING_SIZE = 128,
75 IPOIB_MAX_QUEUE_SIZE = 8192,
76 IPOIB_MIN_QUEUE_SIZE = 2,
77 IPOIB_CM_MAX_CONN_QP = 4096,
78
79 IPOIB_NUM_WC = 4,
80
81 IPOIB_MAX_PATH_REC_QUEUE = 3,
82 IPOIB_MAX_MCAST_QUEUE = 3,
83
84 IPOIB_FLAG_OPER_UP = 0,
85 IPOIB_FLAG_INITIALIZED = 1,
86 IPOIB_FLAG_ADMIN_UP = 2,
87 IPOIB_PKEY_ASSIGNED = 3,
88 IPOIB_PKEY_STOP = 4,
89 IPOIB_FLAG_SUBINTERFACE = 5,
90 IPOIB_MCAST_RUN = 6,
91 IPOIB_STOP_REAPER = 7,
92 IPOIB_FLAG_ADMIN_CM = 9,
93 IPOIB_FLAG_UMCAST = 10,
94 IPOIB_FLAG_CSUM = 11,
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_pseudoheader {
122 u8 hwaddr[INFINIBAND_ALEN];
123 };
124
125 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
126 struct ipoib_mcast {
127 struct ib_sa_mcmember_rec mcmember;
128 struct ib_sa_multicast *mc;
129 struct ipoib_ah *ah;
130
131 struct rb_node rb_node;
132 struct list_head list;
133
134 unsigned long created;
135 unsigned long backoff;
136
137 unsigned long flags;
138 unsigned char logcount;
139
140 struct list_head neigh_list;
141
142 struct sk_buff_head pkt_queue;
143
144 struct net_device *dev;
145 };
146
147 struct ipoib_rx_buf {
148 struct sk_buff *skb;
149 u64 mapping[IPOIB_UD_RX_SG];
150 };
151
152 struct ipoib_tx_buf {
153 struct sk_buff *skb;
154 u64 mapping[MAX_SKB_FRAGS + 1];
155 };
156
157 struct ipoib_cm_tx_buf {
158 struct sk_buff *skb;
159 u64 mapping;
160 };
161
162 struct ib_cm_id;
163
164 struct ipoib_cm_data {
165 __be32 qpn; /* High byte MUST be ignored on receive */
166 __be32 mtu;
167 };
168
169 /*
170 * Quoting 10.3.1 Queue Pair and EE Context States:
171 *
172 * Note, for QPs that are associated with an SRQ, the Consumer should take the
173 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
174 * Reset State. The Consumer may invoke the Destroy QP without first performing
175 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
176 * Last WQE Reached Event. However, if the Consumer does not wait for the
177 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
178 * leakage may occur. Therefore, it is good programming practice to tear down a
179 * QP that is associated with an SRQ by using the following process:
180 *
181 * - Put the QP in the Error State
182 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
183 * - either:
184 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
185 * to be empty or the number of Poll CQ operations has exceeded
186 * CQ capacity size;
187 * - or
188 * post another WR that completes on the same CQ and wait for this
189 * WR to return as a WC;
190 * - and then invoke a Destroy QP or Reset QP.
191 *
192 * We use the second option and wait for a completion on the
193 * same CQ before destroying QPs attached to our SRQ.
194 */
195
196 enum ipoib_cm_state {
197 IPOIB_CM_RX_LIVE,
198 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
199 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
200 };
201
202 struct ipoib_cm_rx {
203 struct ib_cm_id *id;
204 struct ib_qp *qp;
205 struct ipoib_cm_rx_buf *rx_ring;
206 struct list_head list;
207 struct net_device *dev;
208 unsigned long jiffies;
209 enum ipoib_cm_state state;
210 int recv_count;
211 };
212
213 struct ipoib_cm_tx {
214 struct ib_cm_id *id;
215 struct ib_qp *qp;
216 struct list_head list;
217 struct net_device *dev;
218 struct ipoib_neigh *neigh;
219 struct ipoib_path *path;
220 struct ipoib_cm_tx_buf *tx_ring;
221 unsigned tx_head;
222 unsigned tx_tail;
223 unsigned long flags;
224 u32 mtu;
225 };
226
227 struct ipoib_cm_rx_buf {
228 struct sk_buff *skb;
229 u64 mapping[IPOIB_CM_RX_SG];
230 };
231
232 struct ipoib_cm_dev_priv {
233 struct ib_srq *srq;
234 struct ipoib_cm_rx_buf *srq_ring;
235 struct ib_cm_id *id;
236 struct list_head passive_ids; /* state: LIVE */
237 struct list_head rx_error_list; /* state: ERROR */
238 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
239 struct list_head rx_drain_list; /* state: FLUSH, drain started */
240 struct list_head rx_reap_list; /* state: FLUSH, drain done */
241 struct work_struct start_task;
242 struct work_struct reap_task;
243 struct work_struct skb_task;
244 struct work_struct rx_reap_task;
245 struct delayed_work stale_task;
246 struct sk_buff_head skb_queue;
247 struct list_head start_list;
248 struct list_head reap_list;
249 struct ib_wc ibwc[IPOIB_NUM_WC];
250 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
251 struct ib_recv_wr rx_wr;
252 int nonsrq_conn_qp;
253 int max_cm_mtu;
254 int num_frags;
255 };
256
257 struct ipoib_ethtool_st {
258 u16 coalesce_usecs;
259 u16 max_coalesced_frames;
260 };
261
262 /*
263 * Device private locking: network stack tx_lock protects members used
264 * in TX fast path, lock protects everything else. lock nests inside
265 * of tx_lock (ie tx_lock must be acquired first if needed).
266 */
267 struct ipoib_dev_priv {
268 spinlock_t lock;
269
270 struct net_device *dev;
271
272 struct napi_struct napi;
273
274 unsigned long flags;
275
276 struct mutex vlan_mutex;
277
278 struct rb_root path_tree;
279 struct list_head path_list;
280
281 struct ipoib_mcast *broadcast;
282 struct list_head multicast_list;
283 struct rb_root multicast_tree;
284
285 struct delayed_work pkey_poll_task;
286 struct delayed_work mcast_task;
287 struct work_struct carrier_on_task;
288 struct work_struct flush_light;
289 struct work_struct flush_normal;
290 struct work_struct flush_heavy;
291 struct work_struct restart_task;
292 struct delayed_work ah_reap_task;
293
294 struct ib_device *ca;
295 u8 port;
296 u16 pkey;
297 u16 pkey_index;
298 struct ib_pd *pd;
299 struct ib_mr *mr;
300 struct ib_cq *recv_cq;
301 struct ib_cq *send_cq;
302 struct ib_qp *qp;
303 u32 qkey;
304
305 union ib_gid local_gid;
306 u16 local_lid;
307
308 unsigned int admin_mtu;
309 unsigned int mcast_mtu;
310 unsigned int max_ib_mtu;
311
312 struct ipoib_rx_buf *rx_ring;
313
314 struct ipoib_tx_buf *tx_ring;
315 unsigned tx_head;
316 unsigned tx_tail;
317 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
318 struct ib_send_wr tx_wr;
319 unsigned tx_outstanding;
320 struct ib_wc send_wc[MAX_SEND_CQE];
321
322 struct ib_recv_wr rx_wr;
323 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
324
325 struct ib_wc ibwc[IPOIB_NUM_WC];
326
327 struct list_head dead_ahs;
328
329 struct ib_event_handler event_handler;
330
331 struct net_device *parent;
332 struct list_head child_intfs;
333 struct list_head list;
334
335 #ifdef CONFIG_INFINIBAND_IPOIB_CM
336 struct ipoib_cm_dev_priv cm;
337 #endif
338
339 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
340 struct list_head fs_list;
341 struct dentry *mcg_dentry;
342 struct dentry *path_dentry;
343 #endif
344 int hca_caps;
345 struct ipoib_ethtool_st ethtool;
346 struct timer_list poll_timer;
347 };
348
349 struct ipoib_ah {
350 struct net_device *dev;
351 struct ib_ah *ah;
352 struct list_head list;
353 struct kref ref;
354 unsigned last_send;
355 };
356
357 struct ipoib_path {
358 struct net_device *dev;
359 struct ib_sa_path_rec pathrec;
360 struct ipoib_ah *ah;
361 struct sk_buff_head queue;
362
363 struct list_head neigh_list;
364
365 int query_id;
366 struct ib_sa_query *query;
367 struct completion done;
368
369 struct rb_node rb_node;
370 struct list_head list;
371 int valid;
372 };
373
374 struct ipoib_neigh {
375 struct ipoib_ah *ah;
376 #ifdef CONFIG_INFINIBAND_IPOIB_CM
377 struct ipoib_cm_tx *cm;
378 #endif
379 union ib_gid dgid;
380 struct sk_buff_head queue;
381
382 struct neighbour *neighbour;
383 struct net_device *dev;
384
385 struct list_head list;
386 };
387
388 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
389 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
390
ipoib_ud_need_sg(unsigned int ib_mtu)391 static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
392 {
393 return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
394 }
395
396 /*
397 * We stash a pointer to our private neighbour information after our
398 * hardware address in neigh->ha. The ALIGN() expression here makes
399 * sure that this pointer is stored aligned so that an unaligned
400 * load is not needed to dereference it.
401 */
to_ipoib_neigh(struct neighbour * neigh)402 static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
403 {
404 return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
405 INFINIBAND_ALEN, sizeof(void *));
406 }
407
408 struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh,
409 struct net_device *dev);
410 void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh);
411
412 extern struct workqueue_struct *ipoib_workqueue;
413
414 /* functions */
415
416 int ipoib_poll(struct napi_struct *napi, int budget);
417 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
418 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
419
420 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
421 struct ib_pd *pd, struct ib_ah_attr *attr);
422 void ipoib_free_ah(struct kref *kref);
ipoib_put_ah(struct ipoib_ah * ah)423 static inline void ipoib_put_ah(struct ipoib_ah *ah)
424 {
425 kref_put(&ah->ref, ipoib_free_ah);
426 }
427
428 int ipoib_open(struct net_device *dev);
429 int ipoib_add_pkey_attr(struct net_device *dev);
430 int ipoib_add_umcast_attr(struct net_device *dev);
431
432 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
433 struct ipoib_ah *address, u32 qpn);
434 void ipoib_reap_ah(struct work_struct *work);
435
436 void ipoib_mark_paths_invalid(struct net_device *dev);
437 void ipoib_flush_paths(struct net_device *dev);
438 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
439
440 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
441 void ipoib_ib_dev_flush_light(struct work_struct *work);
442 void ipoib_ib_dev_flush_normal(struct work_struct *work);
443 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
444 void ipoib_pkey_event(struct work_struct *work);
445 void ipoib_ib_dev_cleanup(struct net_device *dev);
446
447 int ipoib_ib_dev_open(struct net_device *dev);
448 int ipoib_ib_dev_up(struct net_device *dev);
449 int ipoib_ib_dev_down(struct net_device *dev, int flush);
450 int ipoib_ib_dev_stop(struct net_device *dev, int flush);
451
452 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
453 void ipoib_dev_cleanup(struct net_device *dev);
454
455 void ipoib_mcast_join_task(struct work_struct *work);
456 void ipoib_mcast_carrier_on_task(struct work_struct *work);
457 void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb);
458
459 void ipoib_mcast_restart_task(struct work_struct *work);
460 int ipoib_mcast_start_thread(struct net_device *dev);
461 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
462
463 void ipoib_mcast_dev_down(struct net_device *dev);
464 void ipoib_mcast_dev_flush(struct net_device *dev);
465
466 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
467 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
468 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
469 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
470 union ib_gid *gid,
471 unsigned long *created,
472 unsigned int *queuelen,
473 unsigned int *complete,
474 unsigned int *send_only);
475
476 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
477 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
478 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
479 struct ipoib_path *path);
480 #endif
481
482 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
483 union ib_gid *mgid, int set_qkey);
484
485 int ipoib_init_qp(struct net_device *dev);
486 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
487 void ipoib_transport_dev_cleanup(struct net_device *dev);
488
489 void ipoib_event(struct ib_event_handler *handler,
490 struct ib_event *record);
491
492 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
493 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
494
495 void ipoib_pkey_poll(struct work_struct *work);
496 int ipoib_pkey_dev_delay_open(struct net_device *dev);
497 void ipoib_drain_cq(struct net_device *dev);
498
499 void ipoib_set_ethtool_ops(struct net_device *dev);
500 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
501
502 #ifdef CONFIG_INFINIBAND_IPOIB_CM
503
504 #define IPOIB_FLAGS_RC 0x80
505 #define IPOIB_FLAGS_UC 0x40
506
507 /* We don't support UC connections at the moment */
508 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
509
510 extern int ipoib_max_conn_qp;
511
ipoib_cm_admin_enabled(struct net_device * dev)512 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
513 {
514 struct ipoib_dev_priv *priv = netdev_priv(dev);
515 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
516 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
517 }
518
ipoib_cm_enabled(struct net_device * dev,struct neighbour * n)519 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
520 {
521 struct ipoib_dev_priv *priv = netdev_priv(dev);
522 return IPOIB_CM_SUPPORTED(n->ha) &&
523 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
524 }
525
ipoib_cm_up(struct ipoib_neigh * neigh)526 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
527
528 {
529 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
530 }
531
ipoib_cm_get(struct ipoib_neigh * neigh)532 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
533 {
534 return neigh->cm;
535 }
536
ipoib_cm_set(struct ipoib_neigh * neigh,struct ipoib_cm_tx * tx)537 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
538 {
539 neigh->cm = tx;
540 }
541
ipoib_cm_has_srq(struct net_device * dev)542 static inline int ipoib_cm_has_srq(struct net_device *dev)
543 {
544 struct ipoib_dev_priv *priv = netdev_priv(dev);
545 return !!priv->cm.srq;
546 }
547
ipoib_cm_max_mtu(struct net_device * dev)548 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
549 {
550 struct ipoib_dev_priv *priv = netdev_priv(dev);
551 return priv->cm.max_cm_mtu;
552 }
553
554 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
555 int ipoib_cm_dev_open(struct net_device *dev);
556 void ipoib_cm_dev_stop(struct net_device *dev);
557 int ipoib_cm_dev_init(struct net_device *dev);
558 int ipoib_cm_add_mode_attr(struct net_device *dev);
559 void ipoib_cm_dev_cleanup(struct net_device *dev);
560 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
561 struct ipoib_neigh *neigh);
562 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
563 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
564 unsigned int mtu);
565 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
566 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
567 #else
568
569 struct ipoib_cm_tx;
570
571 #define ipoib_max_conn_qp 0
572
ipoib_cm_admin_enabled(struct net_device * dev)573 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
574 {
575 return 0;
576 }
ipoib_cm_enabled(struct net_device * dev,struct neighbour * n)577 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
578
579 {
580 return 0;
581 }
582
ipoib_cm_up(struct ipoib_neigh * neigh)583 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
584
585 {
586 return 0;
587 }
588
ipoib_cm_get(struct ipoib_neigh * neigh)589 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
590 {
591 return NULL;
592 }
593
ipoib_cm_set(struct ipoib_neigh * neigh,struct ipoib_cm_tx * tx)594 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
595 {
596 }
597
ipoib_cm_has_srq(struct net_device * dev)598 static inline int ipoib_cm_has_srq(struct net_device *dev)
599 {
600 return 0;
601 }
602
ipoib_cm_max_mtu(struct net_device * dev)603 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
604 {
605 return 0;
606 }
607
608 static inline
ipoib_cm_send(struct net_device * dev,struct sk_buff * skb,struct ipoib_cm_tx * tx)609 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
610 {
611 return;
612 }
613
614 static inline
ipoib_cm_dev_open(struct net_device * dev)615 int ipoib_cm_dev_open(struct net_device *dev)
616 {
617 return 0;
618 }
619
620 static inline
ipoib_cm_dev_stop(struct net_device * dev)621 void ipoib_cm_dev_stop(struct net_device *dev)
622 {
623 return;
624 }
625
626 static inline
ipoib_cm_dev_init(struct net_device * dev)627 int ipoib_cm_dev_init(struct net_device *dev)
628 {
629 return -ENOSYS;
630 }
631
632 static inline
ipoib_cm_dev_cleanup(struct net_device * dev)633 void ipoib_cm_dev_cleanup(struct net_device *dev)
634 {
635 return;
636 }
637
638 static inline
ipoib_cm_create_tx(struct net_device * dev,struct ipoib_path * path,struct ipoib_neigh * neigh)639 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
640 struct ipoib_neigh *neigh)
641 {
642 return NULL;
643 }
644
645 static inline
ipoib_cm_destroy_tx(struct ipoib_cm_tx * tx)646 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
647 {
648 return;
649 }
650
651 static inline
ipoib_cm_add_mode_attr(struct net_device * dev)652 int ipoib_cm_add_mode_attr(struct net_device *dev)
653 {
654 return 0;
655 }
656
ipoib_cm_skb_too_long(struct net_device * dev,struct sk_buff * skb,unsigned int mtu)657 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
658 unsigned int mtu)
659 {
660 dev_kfree_skb_any(skb);
661 }
662
ipoib_cm_handle_rx_wc(struct net_device * dev,struct ib_wc * wc)663 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
664 {
665 }
666
ipoib_cm_handle_tx_wc(struct net_device * dev,struct ib_wc * wc)667 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
668 {
669 }
670 #endif
671
672 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
673 void ipoib_create_debug_files(struct net_device *dev);
674 void ipoib_delete_debug_files(struct net_device *dev);
675 int ipoib_register_debugfs(void);
676 void ipoib_unregister_debugfs(void);
677 #else
ipoib_create_debug_files(struct net_device * dev)678 static inline void ipoib_create_debug_files(struct net_device *dev) { }
ipoib_delete_debug_files(struct net_device * dev)679 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
ipoib_register_debugfs(void)680 static inline int ipoib_register_debugfs(void) { return 0; }
ipoib_unregister_debugfs(void)681 static inline void ipoib_unregister_debugfs(void) { }
682 #endif
683
684 #define ipoib_printk(level, priv, format, arg...) \
685 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
686 #define ipoib_warn(priv, format, arg...) \
687 ipoib_printk(KERN_WARNING, priv, format , ## arg)
688
689 extern int ipoib_sendq_size;
690 extern int ipoib_recvq_size;
691
692 extern struct ib_sa_client ipoib_sa_client;
693
694 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
695 extern int ipoib_debug_level;
696
697 #define ipoib_dbg(priv, format, arg...) \
698 do { \
699 if (ipoib_debug_level > 0) \
700 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
701 } while (0)
702 #define ipoib_dbg_mcast(priv, format, arg...) \
703 do { \
704 if (mcast_debug_level > 0) \
705 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
706 } while (0)
707 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
708 #define ipoib_dbg(priv, format, arg...) \
709 do { (void) (priv); } while (0)
710 #define ipoib_dbg_mcast(priv, format, arg...) \
711 do { (void) (priv); } while (0)
712 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
713
714 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
715 #define ipoib_dbg_data(priv, format, arg...) \
716 do { \
717 if (data_debug_level > 0) \
718 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
719 } while (0)
720 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
721 #define ipoib_dbg_data(priv, format, arg...) \
722 do { (void) (priv); } while (0)
723 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
724
725 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
726
727 #endif /* _IPOIB_H */
728