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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / infiniband / ulp / ipoib / ipoib.h
blob8033a006277fd624cdacfc2202e2ef043edb7065
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 /* 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 IPOIB_PSEUDO_LEN = 20,
66 IPOIB_HARD_LEN = IPOIB_ENCAP_LEN + IPOIB_PSEUDO_LEN,
67
68 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
69 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */
70
71 IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */
72 IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN,
73 IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
74 IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
75 IPOIB_RX_RING_SIZE = 256,
76 IPOIB_TX_RING_SIZE = 128,
77 IPOIB_MAX_QUEUE_SIZE = 8192,
78 IPOIB_MIN_QUEUE_SIZE = 2,
79 IPOIB_CM_MAX_CONN_QP = 4096,
80
81 IPOIB_NUM_WC = 4,
82
83 IPOIB_MAX_PATH_REC_QUEUE = 3,
84 IPOIB_MAX_MCAST_QUEUE = 64,
85
86 IPOIB_FLAG_OPER_UP = 0,
87 IPOIB_FLAG_INITIALIZED = 1,
88 IPOIB_FLAG_ADMIN_UP = 2,
89 IPOIB_PKEY_ASSIGNED = 3,
90 IPOIB_FLAG_SUBINTERFACE = 5,
91 IPOIB_STOP_REAPER = 7,
92 IPOIB_FLAG_ADMIN_CM = 9,
93 IPOIB_FLAG_UMCAST = 10,
94 IPOIB_STOP_NEIGH_GC = 11,
95 IPOIB_NEIGH_TBL_FLUSH = 12,
96 IPOIB_FLAG_DEV_ADDR_SET = 13,
97 IPOIB_FLAG_DEV_ADDR_CTRL = 14,
98 IPOIB_FLAG_GOING_DOWN = 15,
99
100 IPOIB_MAX_BACKOFF_SECONDS = 16,
101
102 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
103 IPOIB_MCAST_FLAG_SENDONLY = 1,
104 /*
105 * For IPOIB_MCAST_FLAG_BUSY
106 * When set, in flight join and mcast->mc is unreliable
107 * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or
108 * haven't started yet
109 * When clear and mcast->mc is valid pointer, join was successful
110 */
111 IPOIB_MCAST_FLAG_BUSY = 2,
112 IPOIB_MCAST_FLAG_ATTACHED = 3,
113
114 MAX_SEND_CQE = 64,
115 IPOIB_CM_COPYBREAK = 256,
116
117 IPOIB_NON_CHILD = 0,
118 IPOIB_LEGACY_CHILD = 1,
119 IPOIB_RTNL_CHILD = 2,
120 };
121
122 #define IPOIB_OP_RECV (1ul << 31)
123 #ifdef CONFIG_INFINIBAND_IPOIB_CM
124 #define IPOIB_OP_CM (1ul << 30)
125 #else
126 #define IPOIB_OP_CM (0)
127 #endif
128
129 #define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
130
131 /* structs */
132
133 struct ipoib_header {
134 __be16 proto;
135 u16 reserved;
136 };
137
138 struct ipoib_pseudo_header {
139 u8 hwaddr[INFINIBAND_ALEN];
140 };
141
142 static inline void skb_add_pseudo_hdr(struct sk_buff *skb)
143 {
144 char *data = skb_push(skb, IPOIB_PSEUDO_LEN);
145
146 /*
147 * only the ipoib header is present now, make room for a dummy
148 * pseudo header and set skb field accordingly
149 */
150 memset(data, 0, IPOIB_PSEUDO_LEN);
151 skb_reset_mac_header(skb);
152 skb_pull(skb, IPOIB_HARD_LEN);
153 }
154
155 static inline struct ipoib_dev_priv *ipoib_priv(const struct net_device *dev)
156 {
157 struct rdma_netdev *rn = netdev_priv(dev);
158
159 return rn->clnt_priv;
160 }
161
162 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
163 struct ipoib_mcast {
164 struct ib_sa_mcmember_rec mcmember;
165 struct ib_sa_multicast *mc;
166 struct ipoib_ah *ah;
167
168 struct rb_node rb_node;
169 struct list_head list;
170
171 unsigned long created;
172 unsigned long backoff;
173 unsigned long delay_until;
174
175 unsigned long flags;
176 unsigned char logcount;
177
178 struct list_head neigh_list;
179
180 struct sk_buff_head pkt_queue;
181
182 struct net_device *dev;
183 struct completion done;
184 };
185
186 struct ipoib_rx_buf {
187 struct sk_buff *skb;
188 u64 mapping[IPOIB_UD_RX_SG];
189 };
190
191 struct ipoib_tx_buf {
192 struct sk_buff *skb;
193 u64 mapping[MAX_SKB_FRAGS + 1];
194 };
195
196 struct ipoib_cm_tx_buf {
197 struct sk_buff *skb;
198 u64 mapping;
199 };
200
201 struct ib_cm_id;
202
203 struct ipoib_cm_data {
204 __be32 qpn; /* High byte MUST be ignored on receive */
205 __be32 mtu;
206 };
207
208 /*
209 * Quoting 10.3.1 Queue Pair and EE Context States:
210 *
211 * Note, for QPs that are associated with an SRQ, the Consumer should take the
212 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
213 * Reset State. The Consumer may invoke the Destroy QP without first performing
214 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
215 * Last WQE Reached Event. However, if the Consumer does not wait for the
216 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
217 * leakage may occur. Therefore, it is good programming practice to tear down a
218 * QP that is associated with an SRQ by using the following process:
219 *
220 * - Put the QP in the Error State
221 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
222 * - either:
223 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
224 * to be empty or the number of Poll CQ operations has exceeded
225 * CQ capacity size;
226 * - or
227 * post another WR that completes on the same CQ and wait for this
228 * WR to return as a WC;
229 * - and then invoke a Destroy QP or Reset QP.
230 *
231 * We use the second option and wait for a completion on the
232 * same CQ before destroying QPs attached to our SRQ.
233 */
234
235 enum ipoib_cm_state {
236 IPOIB_CM_RX_LIVE,
237 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
238 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
239 };
240
241 struct ipoib_cm_rx {
242 struct ib_cm_id *id;
243 struct ib_qp *qp;
244 struct ipoib_cm_rx_buf *rx_ring;
245 struct list_head list;
246 struct net_device *dev;
247 unsigned long jiffies;
248 enum ipoib_cm_state state;
249 int recv_count;
250 };
251
252 struct ipoib_cm_tx {
253 struct ib_cm_id *id;
254 struct ib_qp *qp;
255 struct list_head list;
256 struct net_device *dev;
257 struct ipoib_neigh *neigh;
258 struct ipoib_path *path;
259 struct ipoib_tx_buf *tx_ring;
260 unsigned tx_head;
261 unsigned tx_tail;
262 unsigned long flags;
263 u32 mtu;
264 unsigned max_send_sge;
265 };
266
267 struct ipoib_cm_rx_buf {
268 struct sk_buff *skb;
269 u64 mapping[IPOIB_CM_RX_SG];
270 };
271
272 struct ipoib_cm_dev_priv {
273 struct ib_srq *srq;
274 struct ipoib_cm_rx_buf *srq_ring;
275 struct ib_cm_id *id;
276 struct list_head passive_ids; /* state: LIVE */
277 struct list_head rx_error_list; /* state: ERROR */
278 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
279 struct list_head rx_drain_list; /* state: FLUSH, drain started */
280 struct list_head rx_reap_list; /* state: FLUSH, drain done */
281 struct work_struct start_task;
282 struct work_struct reap_task;
283 struct work_struct skb_task;
284 struct work_struct rx_reap_task;
285 struct delayed_work stale_task;
286 struct sk_buff_head skb_queue;
287 struct list_head start_list;
288 struct list_head reap_list;
289 struct ib_wc ibwc[IPOIB_NUM_WC];
290 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
291 struct ib_recv_wr rx_wr;
292 int nonsrq_conn_qp;
293 int max_cm_mtu;
294 int num_frags;
295 };
296
297 struct ipoib_ethtool_st {
298 u16 coalesce_usecs;
299 u16 max_coalesced_frames;
300 };
301
302 struct ipoib_neigh_table;
303
304 struct ipoib_neigh_hash {
305 struct ipoib_neigh_table *ntbl;
306 struct ipoib_neigh __rcu **buckets;
307 struct rcu_head rcu;
308 u32 mask;
309 u32 size;
310 };
311
312 struct ipoib_neigh_table {
313 struct ipoib_neigh_hash __rcu *htbl;
314 atomic_t entries;
315 struct completion flushed;
316 struct completion deleted;
317 };
318
319 struct ipoib_qp_state_validate {
320 struct work_struct work;
321 struct ipoib_dev_priv *priv;
322 };
323
324 /*
325 * Device private locking: network stack tx_lock protects members used
326 * in TX fast path, lock protects everything else. lock nests inside
327 * of tx_lock (ie tx_lock must be acquired first if needed).
328 */
329 struct ipoib_dev_priv {
330 spinlock_t lock;
331
332 struct net_device *dev;
333
334 struct napi_struct send_napi;
335 struct napi_struct recv_napi;
336
337 unsigned long flags;
338
339 struct rw_semaphore vlan_rwsem;
340 struct mutex mcast_mutex;
341 struct mutex sysfs_mutex;
342
343 struct rb_root path_tree;
344 struct list_head path_list;
345
346 struct ipoib_neigh_table ntbl;
347
348 struct ipoib_mcast *broadcast;
349 struct list_head multicast_list;
350 struct rb_root multicast_tree;
351
352 struct workqueue_struct *wq;
353 struct delayed_work mcast_task;
354 struct work_struct carrier_on_task;
355 struct work_struct flush_light;
356 struct work_struct flush_normal;
357 struct work_struct flush_heavy;
358 struct work_struct restart_task;
359 struct delayed_work ah_reap_task;
360 struct delayed_work neigh_reap_task;
361 struct ib_device *ca;
362 u8 port;
363 u16 pkey;
364 u16 pkey_index;
365 struct ib_pd *pd;
366 struct ib_cq *recv_cq;
367 struct ib_cq *send_cq;
368 struct ib_qp *qp;
369 u32 qkey;
370
371 union ib_gid local_gid;
372 u32 local_lid;
373
374 unsigned int admin_mtu;
375 unsigned int mcast_mtu;
376 unsigned int max_ib_mtu;
377
378 struct ipoib_rx_buf *rx_ring;
379
380 struct ipoib_tx_buf *tx_ring;
381 unsigned tx_head;
382 unsigned tx_tail;
383 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
384 struct ib_ud_wr tx_wr;
385 struct ib_wc send_wc[MAX_SEND_CQE];
386
387 struct ib_recv_wr rx_wr;
388 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
389
390 struct ib_wc ibwc[IPOIB_NUM_WC];
391
392 struct list_head dead_ahs;
393
394 struct ib_event_handler event_handler;
395
396 struct net_device *parent;
397 struct list_head child_intfs;
398 struct list_head list;
399 int child_type;
400
401 #ifdef CONFIG_INFINIBAND_IPOIB_CM
402 struct ipoib_cm_dev_priv cm;
403 #endif
404
405 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
406 struct list_head fs_list;
407 struct dentry *mcg_dentry;
408 struct dentry *path_dentry;
409 #endif
410 u64 hca_caps;
411 struct ipoib_ethtool_st ethtool;
412 unsigned max_send_sge;
413 bool sm_fullmember_sendonly_support;
414 const struct net_device_ops *rn_ops;
415 };
416
417 struct ipoib_ah {
418 struct net_device *dev;
419 struct ib_ah *ah;
420 struct list_head list;
421 struct kref ref;
422 unsigned last_send;
423 };
424
425 struct ipoib_path {
426 struct net_device *dev;
427 struct sa_path_rec pathrec;
428 struct ipoib_ah *ah;
429 struct sk_buff_head queue;
430
431 struct list_head neigh_list;
432
433 int query_id;
434 struct ib_sa_query *query;
435 struct completion done;
436
437 struct rb_node rb_node;
438 struct list_head list;
439 int valid;
440 };
441
442 struct ipoib_neigh {
443 struct ipoib_ah *ah;
444 #ifdef CONFIG_INFINIBAND_IPOIB_CM
445 struct ipoib_cm_tx *cm;
446 #endif
447 u8 daddr[INFINIBAND_ALEN];
448 struct sk_buff_head queue;
449
450 struct net_device *dev;
451
452 struct list_head list;
453 struct ipoib_neigh __rcu *hnext;
454 struct rcu_head rcu;
455 atomic_t refcnt;
456 unsigned long alive;
457 };
458
459 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
460 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
461
462 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
463 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
464 {
465 if (atomic_dec_and_test(&neigh->refcnt))
466 ipoib_neigh_dtor(neigh);
467 }
468 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
469 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
470 struct net_device *dev);
471 void ipoib_neigh_free(struct ipoib_neigh *neigh);
472 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
473
474 extern struct workqueue_struct *ipoib_workqueue;
475
476 /* functions */
477
478 int ipoib_rx_poll(struct napi_struct *napi, int budget);
479 int ipoib_tx_poll(struct napi_struct *napi, int budget);
480 void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr);
481 void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr);
482
483 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
484 struct ib_pd *pd, struct rdma_ah_attr *attr);
485 void ipoib_free_ah(struct kref *kref);
486 static inline void ipoib_put_ah(struct ipoib_ah *ah)
487 {
488 kref_put(&ah->ref, ipoib_free_ah);
489 }
490 int ipoib_open(struct net_device *dev);
491 int ipoib_add_pkey_attr(struct net_device *dev);
492 int ipoib_add_umcast_attr(struct net_device *dev);
493
494 int ipoib_send(struct net_device *dev, struct sk_buff *skb,
495 struct ib_ah *address, u32 dqpn);
496 void ipoib_reap_ah(struct work_struct *work);
497
498 struct ipoib_path *__path_find(struct net_device *dev, void *gid);
499 void ipoib_mark_paths_invalid(struct net_device *dev);
500 void ipoib_flush_paths(struct net_device *dev);
501 struct ipoib_dev_priv *ipoib_intf_alloc(struct ib_device *hca, u8 port,
502 const char *format);
503 void ipoib_ib_tx_timer_func(struct timer_list *t);
504 void ipoib_ib_dev_flush_light(struct work_struct *work);
505 void ipoib_ib_dev_flush_normal(struct work_struct *work);
506 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
507 void ipoib_pkey_event(struct work_struct *work);
508 void ipoib_ib_dev_cleanup(struct net_device *dev);
509
510 int ipoib_ib_dev_open_default(struct net_device *dev);
511 int ipoib_ib_dev_open(struct net_device *dev);
512 int ipoib_ib_dev_stop(struct net_device *dev);
513 void ipoib_ib_dev_up(struct net_device *dev);
514 void ipoib_ib_dev_down(struct net_device *dev);
515 int ipoib_ib_dev_stop_default(struct net_device *dev);
516 void ipoib_pkey_dev_check_presence(struct net_device *dev);
517
518 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
519 void ipoib_dev_cleanup(struct net_device *dev);
520
521 void ipoib_mcast_join_task(struct work_struct *work);
522 void ipoib_mcast_carrier_on_task(struct work_struct *work);
523 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
524
525 void ipoib_mcast_restart_task(struct work_struct *work);
526 void ipoib_mcast_start_thread(struct net_device *dev);
527 int ipoib_mcast_stop_thread(struct net_device *dev);
528
529 void ipoib_mcast_dev_down(struct net_device *dev);
530 void ipoib_mcast_dev_flush(struct net_device *dev);
531
532 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
533 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
534 struct ipoib_tx_buf *tx_req);
535
536 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
537 struct ipoib_tx_buf *tx_req)
538 {
539 int i, off;
540 struct sk_buff *skb = tx_req->skb;
541 skb_frag_t *frags = skb_shinfo(skb)->frags;
542 int nr_frags = skb_shinfo(skb)->nr_frags;
543 u64 *mapping = tx_req->mapping;
544
545 if (skb_headlen(skb)) {
546 priv->tx_sge[0].addr = mapping[0];
547 priv->tx_sge[0].length = skb_headlen(skb);
548 off = 1;
549 } else
550 off = 0;
551
552 for (i = 0; i < nr_frags; ++i) {
553 priv->tx_sge[i + off].addr = mapping[i + off];
554 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
555 }
556 priv->tx_wr.wr.num_sge = nr_frags + off;
557 }
558
559 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
560 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
561 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
562 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
563 union ib_gid *gid,
564 unsigned long *created,
565 unsigned int *queuelen,
566 unsigned int *complete,
567 unsigned int *send_only);
568
569 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
570 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
571 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
572 struct ipoib_path *path);
573 #endif
574
575 int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
576 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
577 int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
578 union ib_gid *mgid, u16 mlid);
579 void ipoib_mcast_remove_list(struct list_head *remove_list);
580 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
581 struct list_head *remove_list);
582
583 int ipoib_init_qp(struct net_device *dev);
584 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
585 void ipoib_transport_dev_cleanup(struct net_device *dev);
586
587 void ipoib_event(struct ib_event_handler *handler,
588 struct ib_event *record);
589
590 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
591 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
592
593 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
594 u16 pkey, int child_type);
595
596 int __init ipoib_netlink_init(void);
597 void __exit ipoib_netlink_fini(void);
598
599 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
600 int ipoib_set_mode(struct net_device *dev, const char *buf);
601
602 void ipoib_setup_common(struct net_device *dev);
603
604 void ipoib_pkey_open(struct ipoib_dev_priv *priv);
605 void ipoib_drain_cq(struct net_device *dev);
606
607 void ipoib_set_ethtool_ops(struct net_device *dev);
608 void ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
609
610 #define IPOIB_FLAGS_RC 0x80
611 #define IPOIB_FLAGS_UC 0x40
612
613 /* We don't support UC connections at the moment */
614 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
615
616 #ifdef CONFIG_INFINIBAND_IPOIB_CM
617
618 extern int ipoib_max_conn_qp;
619
620 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
621 {
622 struct ipoib_dev_priv *priv = ipoib_priv(dev);
623 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
624 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
625 }
626
627 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
628 {
629 struct ipoib_dev_priv *priv = ipoib_priv(dev);
630 return IPOIB_CM_SUPPORTED(hwaddr) &&
631 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
632 }
633
634 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
635
636 {
637 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
638 }
639
640 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
641 {
642 return neigh->cm;
643 }
644
645 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
646 {
647 neigh->cm = tx;
648 }
649
650 static inline int ipoib_cm_has_srq(struct net_device *dev)
651 {
652 struct ipoib_dev_priv *priv = ipoib_priv(dev);
653 return !!priv->cm.srq;
654 }
655
656 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
657 {
658 struct ipoib_dev_priv *priv = ipoib_priv(dev);
659 return priv->cm.max_cm_mtu;
660 }
661
662 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
663 int ipoib_cm_dev_open(struct net_device *dev);
664 void ipoib_cm_dev_stop(struct net_device *dev);
665 int ipoib_cm_dev_init(struct net_device *dev);
666 int ipoib_cm_add_mode_attr(struct net_device *dev);
667 void ipoib_cm_dev_cleanup(struct net_device *dev);
668 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
669 struct ipoib_neigh *neigh);
670 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
671 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
672 unsigned int mtu);
673 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
674 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
675 #else
676
677 struct ipoib_cm_tx;
678
679 #define ipoib_max_conn_qp 0
680
681 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
682 {
683 return 0;
684 }
685 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
686
687 {
688 return 0;
689 }
690
691 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
692
693 {
694 return 0;
695 }
696
697 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
698 {
699 return NULL;
700 }
701
702 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
703 {
704 }
705
706 static inline int ipoib_cm_has_srq(struct net_device *dev)
707 {
708 return 0;
709 }
710
711 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
712 {
713 return 0;
714 }
715
716 static inline
717 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
718 {
719 return;
720 }
721
722 static inline
723 int ipoib_cm_dev_open(struct net_device *dev)
724 {
725 return 0;
726 }
727
728 static inline
729 void ipoib_cm_dev_stop(struct net_device *dev)
730 {
731 return;
732 }
733
734 static inline
735 int ipoib_cm_dev_init(struct net_device *dev)
736 {
737 return -ENOSYS;
738 }
739
740 static inline
741 void ipoib_cm_dev_cleanup(struct net_device *dev)
742 {
743 return;
744 }
745
746 static inline
747 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
748 struct ipoib_neigh *neigh)
749 {
750 return NULL;
751 }
752
753 static inline
754 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
755 {
756 return;
757 }
758
759 static inline
760 int ipoib_cm_add_mode_attr(struct net_device *dev)
761 {
762 return 0;
763 }
764
765 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
766 unsigned int mtu)
767 {
768 dev_kfree_skb_any(skb);
769 }
770
771 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
772 {
773 }
774
775 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
776 {
777 }
778 #endif
779
780 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
781 void ipoib_create_debug_files(struct net_device *dev);
782 void ipoib_delete_debug_files(struct net_device *dev);
783 int ipoib_register_debugfs(void);
784 void ipoib_unregister_debugfs(void);
785 #else
786 static inline void ipoib_create_debug_files(struct net_device *dev) { }
787 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
788 static inline int ipoib_register_debugfs(void) { return 0; }
789 static inline void ipoib_unregister_debugfs(void) { }
790 #endif
791
792 #define ipoib_printk(level, priv, format, arg...) \
793 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
794 #define ipoib_warn(priv, format, arg...) \
795 do { \
796 static DEFINE_RATELIMIT_STATE(_rs, \
797 10 * HZ /*10 seconds */, \
798 100); \
799 if (__ratelimit(&_rs)) \
800 ipoib_printk(KERN_WARNING, priv, format , ## arg);\
801 } while (0)
802
803 extern int ipoib_sendq_size;
804 extern int ipoib_recvq_size;
805
806 extern struct ib_sa_client ipoib_sa_client;
807
808 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
809 extern int ipoib_debug_level;
810
811 #define ipoib_dbg(priv, format, arg...) \
812 do { \
813 if (ipoib_debug_level > 0) \
814 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
815 } while (0)
816 #define ipoib_dbg_mcast(priv, format, arg...) \
817 do { \
818 if (mcast_debug_level > 0) \
819 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
820 } while (0)
821 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
822 #define ipoib_dbg(priv, format, arg...) \
823 do { (void) (priv); } while (0)
824 #define ipoib_dbg_mcast(priv, format, arg...) \
825 do { (void) (priv); } while (0)
826 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
827
828 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
829 #define ipoib_dbg_data(priv, format, arg...) \
830 do { \
831 if (data_debug_level > 0) \
832 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
833 } while (0)
834 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
835 #define ipoib_dbg_data(priv, format, arg...) \
836 do { (void) (priv); } while (0)
837 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
838
839 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
840
841 extern const char ipoib_driver_version[];
842
843 #endif /* _IPOIB_H */
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