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