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Linux 4.19.133
[linux/fpc-iii.git] / drivers / infiniband / ulp / ipoib / ipoib.h
blob85267bbf483603bee697fdddae4405507d5c3c31
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_NEIGH_TBL_FLUSH = 12,
95 IPOIB_FLAG_DEV_ADDR_SET = 13,
96 IPOIB_FLAG_DEV_ADDR_CTRL = 14,
97
98 IPOIB_MAX_BACKOFF_SECONDS = 16,
99
100 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
101 IPOIB_MCAST_FLAG_SENDONLY = 1,
102 /*
103 * For IPOIB_MCAST_FLAG_BUSY
104 * When set, in flight join and mcast->mc is unreliable
105 * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or
106 * haven't started yet
107 * When clear and mcast->mc is valid pointer, join was successful
108 */
109 IPOIB_MCAST_FLAG_BUSY = 2,
110 IPOIB_MCAST_FLAG_ATTACHED = 3,
111
112 MAX_SEND_CQE = 64,
113 IPOIB_CM_COPYBREAK = 256,
114
115 IPOIB_NON_CHILD = 0,
116 IPOIB_LEGACY_CHILD = 1,
117 IPOIB_RTNL_CHILD = 2,
118 };
119
120 #define IPOIB_OP_RECV (1ul << 31)
121 #ifdef CONFIG_INFINIBAND_IPOIB_CM
122 #define IPOIB_OP_CM (1ul << 30)
123 #else
124 #define IPOIB_OP_CM (0)
125 #endif
126
127 #define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
128
129 /* structs */
130
131 struct ipoib_header {
132 __be16 proto;
133 u16 reserved;
134 };
135
136 struct ipoib_pseudo_header {
137 u8 hwaddr[INFINIBAND_ALEN];
138 };
139
140 static inline void skb_add_pseudo_hdr(struct sk_buff *skb)
141 {
142 char *data = skb_push(skb, IPOIB_PSEUDO_LEN);
143
144 /*
145 * only the ipoib header is present now, make room for a dummy
146 * pseudo header and set skb field accordingly
147 */
148 memset(data, 0, IPOIB_PSEUDO_LEN);
149 skb_reset_mac_header(skb);
150 skb_pull(skb, IPOIB_HARD_LEN);
151 }
152
153 static inline struct ipoib_dev_priv *ipoib_priv(const struct net_device *dev)
154 {
155 struct rdma_netdev *rn = netdev_priv(dev);
156
157 return rn->clnt_priv;
158 }
159
160 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
161 struct ipoib_mcast {
162 struct ib_sa_mcmember_rec mcmember;
163 struct ib_sa_multicast *mc;
164 struct ipoib_ah *ah;
165
166 struct rb_node rb_node;
167 struct list_head list;
168
169 unsigned long created;
170 unsigned long backoff;
171 unsigned long delay_until;
172
173 unsigned long flags;
174 unsigned char logcount;
175
176 struct list_head neigh_list;
177
178 struct sk_buff_head pkt_queue;
179
180 struct net_device *dev;
181 struct completion done;
182 };
183
184 struct ipoib_rx_buf {
185 struct sk_buff *skb;
186 u64 mapping[IPOIB_UD_RX_SG];
187 };
188
189 struct ipoib_tx_buf {
190 struct sk_buff *skb;
191 u64 mapping[MAX_SKB_FRAGS + 1];
192 };
193
194 struct ib_cm_id;
195
196 struct ipoib_cm_data {
197 __be32 qpn; /* High byte MUST be ignored on receive */
198 __be32 mtu;
199 };
200
201 /*
202 * Quoting 10.3.1 Queue Pair and EE Context States:
203 *
204 * Note, for QPs that are associated with an SRQ, the Consumer should take the
205 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
206 * Reset State. The Consumer may invoke the Destroy QP without first performing
207 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
208 * Last WQE Reached Event. However, if the Consumer does not wait for the
209 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
210 * leakage may occur. Therefore, it is good programming practice to tear down a
211 * QP that is associated with an SRQ by using the following process:
212 *
213 * - Put the QP in the Error State
214 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
215 * - either:
216 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
217 * to be empty or the number of Poll CQ operations has exceeded
218 * CQ capacity size;
219 * - or
220 * post another WR that completes on the same CQ and wait for this
221 * WR to return as a WC;
222 * - and then invoke a Destroy QP or Reset QP.
223 *
224 * We use the second option and wait for a completion on the
225 * same CQ before destroying QPs attached to our SRQ.
226 */
227
228 enum ipoib_cm_state {
229 IPOIB_CM_RX_LIVE,
230 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
231 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
232 };
233
234 struct ipoib_cm_rx {
235 struct ib_cm_id *id;
236 struct ib_qp *qp;
237 struct ipoib_cm_rx_buf *rx_ring;
238 struct list_head list;
239 struct net_device *dev;
240 unsigned long jiffies;
241 enum ipoib_cm_state state;
242 int recv_count;
243 };
244
245 struct ipoib_cm_tx {
246 struct ib_cm_id *id;
247 struct ib_qp *qp;
248 struct list_head list;
249 struct net_device *dev;
250 struct ipoib_neigh *neigh;
251 struct ipoib_tx_buf *tx_ring;
252 unsigned int tx_head;
253 unsigned int tx_tail;
254 unsigned long flags;
255 u32 mtu;
256 unsigned int max_send_sge;
257 };
258
259 struct ipoib_cm_rx_buf {
260 struct sk_buff *skb;
261 u64 mapping[IPOIB_CM_RX_SG];
262 };
263
264 struct ipoib_cm_dev_priv {
265 struct ib_srq *srq;
266 struct ipoib_cm_rx_buf *srq_ring;
267 struct ib_cm_id *id;
268 struct list_head passive_ids; /* state: LIVE */
269 struct list_head rx_error_list; /* state: ERROR */
270 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
271 struct list_head rx_drain_list; /* state: FLUSH, drain started */
272 struct list_head rx_reap_list; /* state: FLUSH, drain done */
273 struct work_struct start_task;
274 struct work_struct reap_task;
275 struct work_struct skb_task;
276 struct work_struct rx_reap_task;
277 struct delayed_work stale_task;
278 struct sk_buff_head skb_queue;
279 struct list_head start_list;
280 struct list_head reap_list;
281 struct ib_wc ibwc[IPOIB_NUM_WC];
282 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
283 struct ib_recv_wr rx_wr;
284 int nonsrq_conn_qp;
285 int max_cm_mtu;
286 int num_frags;
287 };
288
289 struct ipoib_ethtool_st {
290 u16 coalesce_usecs;
291 u16 max_coalesced_frames;
292 };
293
294 struct ipoib_neigh_table;
295
296 struct ipoib_neigh_hash {
297 struct ipoib_neigh_table *ntbl;
298 struct ipoib_neigh __rcu **buckets;
299 struct rcu_head rcu;
300 u32 mask;
301 u32 size;
302 };
303
304 struct ipoib_neigh_table {
305 struct ipoib_neigh_hash __rcu *htbl;
306 atomic_t entries;
307 struct completion flushed;
308 struct completion deleted;
309 };
310
311 struct ipoib_qp_state_validate {
312 struct work_struct work;
313 struct ipoib_dev_priv *priv;
314 };
315
316 /*
317 * Device private locking: network stack tx_lock protects members used
318 * in TX fast path, lock protects everything else. lock nests inside
319 * of tx_lock (ie tx_lock must be acquired first if needed).
320 */
321 struct ipoib_dev_priv {
322 spinlock_t lock;
323
324 struct net_device *dev;
325 void (*next_priv_destructor)(struct net_device *dev);
326
327 struct napi_struct send_napi;
328 struct napi_struct recv_napi;
329
330 unsigned long flags;
331
332 /*
333 * This protects access to the child_intfs list.
334 * To READ from child_intfs the RTNL or vlan_rwsem read side must be
335 * held. To WRITE RTNL and the vlan_rwsem write side must be held (in
336 * that order) This lock exists because we have a few contexts where
337 * we need the child_intfs, but do not want to grab the RTNL.
338 */
339 struct rw_semaphore vlan_rwsem;
340 struct mutex mcast_mutex;
341
342 struct rb_root path_tree;
343 struct list_head path_list;
344
345 struct ipoib_neigh_table ntbl;
346
347 struct ipoib_mcast *broadcast;
348 struct list_head multicast_list;
349 struct rb_root multicast_tree;
350
351 struct workqueue_struct *wq;
352 struct delayed_work mcast_task;
353 struct work_struct carrier_on_task;
354 struct work_struct flush_light;
355 struct work_struct flush_normal;
356 struct work_struct flush_heavy;
357 struct work_struct restart_task;
358 struct delayed_work ah_reap_task;
359 struct delayed_work neigh_reap_task;
360 struct ib_device *ca;
361 u8 port;
362 u16 pkey;
363 u16 pkey_index;
364 struct ib_pd *pd;
365 struct ib_cq *recv_cq;
366 struct ib_cq *send_cq;
367 struct ib_qp *qp;
368 u32 qkey;
369
370 union ib_gid local_gid;
371 u32 local_lid;
372
373 unsigned int admin_mtu;
374 unsigned int mcast_mtu;
375 unsigned int max_ib_mtu;
376
377 struct ipoib_rx_buf *rx_ring;
378
379 struct ipoib_tx_buf *tx_ring;
380 /* cyclic ring variables for managing tx_ring, for UD only */
381 unsigned int tx_head;
382 unsigned int tx_tail;
383 /* cyclic ring variables for counting overall outstanding send WRs */
384 unsigned int global_tx_head;
385 unsigned int global_tx_tail;
386 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
387 struct ib_ud_wr tx_wr;
388 struct ib_wc send_wc[MAX_SEND_CQE];
389
390 struct ib_recv_wr rx_wr;
391 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
392
393 struct ib_wc ibwc[IPOIB_NUM_WC];
394
395 struct list_head dead_ahs;
396
397 struct ib_event_handler event_handler;
398
399 struct net_device *parent;
400 struct list_head child_intfs;
401 struct list_head list;
402 int child_type;
403
404 #ifdef CONFIG_INFINIBAND_IPOIB_CM
405 struct ipoib_cm_dev_priv cm;
406 #endif
407
408 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
409 struct list_head fs_list;
410 struct dentry *mcg_dentry;
411 struct dentry *path_dentry;
412 #endif
413 u64 hca_caps;
414 struct ipoib_ethtool_st ethtool;
415 unsigned int max_send_sge;
416 bool sm_fullmember_sendonly_support;
417 const struct net_device_ops *rn_ops;
418 };
419
420 struct ipoib_ah {
421 struct net_device *dev;
422 struct ib_ah *ah;
423 struct list_head list;
424 struct kref ref;
425 unsigned int last_send;
426 int valid;
427 };
428
429 struct ipoib_path {
430 struct net_device *dev;
431 struct sa_path_rec pathrec;
432 struct ipoib_ah *ah;
433 struct sk_buff_head queue;
434
435 struct list_head neigh_list;
436
437 int query_id;
438 struct ib_sa_query *query;
439 struct completion done;
440
441 struct rb_node rb_node;
442 struct list_head list;
443 };
444
445 struct ipoib_neigh {
446 struct ipoib_ah *ah;
447 #ifdef CONFIG_INFINIBAND_IPOIB_CM
448 struct ipoib_cm_tx *cm;
449 #endif
450 u8 daddr[INFINIBAND_ALEN];
451 struct sk_buff_head queue;
452
453 struct net_device *dev;
454
455 struct list_head list;
456 struct ipoib_neigh __rcu *hnext;
457 struct rcu_head rcu;
458 atomic_t refcnt;
459 unsigned long alive;
460 };
461
462 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
463 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
464
465 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
466 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
467 {
468 if (atomic_dec_and_test(&neigh->refcnt))
469 ipoib_neigh_dtor(neigh);
470 }
471 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
472 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
473 struct net_device *dev);
474 void ipoib_neigh_free(struct ipoib_neigh *neigh);
475 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
476
477 extern struct workqueue_struct *ipoib_workqueue;
478
479 /* functions */
480
481 int ipoib_rx_poll(struct napi_struct *napi, int budget);
482 int ipoib_tx_poll(struct napi_struct *napi, int budget);
483 void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr);
484 void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr);
485
486 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
487 struct ib_pd *pd, struct rdma_ah_attr *attr);
488 void ipoib_free_ah(struct kref *kref);
489 static inline void ipoib_put_ah(struct ipoib_ah *ah)
490 {
491 kref_put(&ah->ref, ipoib_free_ah);
492 }
493 int ipoib_open(struct net_device *dev);
494 void ipoib_intf_free(struct net_device *dev);
495 int ipoib_add_pkey_attr(struct net_device *dev);
496 int ipoib_add_umcast_attr(struct net_device *dev);
497
498 int ipoib_send(struct net_device *dev, struct sk_buff *skb,
499 struct ib_ah *address, u32 dqpn);
500 void ipoib_reap_ah(struct work_struct *work);
501
502 struct ipoib_path *__path_find(struct net_device *dev, void *gid);
503 void ipoib_mark_paths_invalid(struct net_device *dev);
504 void ipoib_flush_paths(struct net_device *dev);
505 struct ipoib_dev_priv *ipoib_intf_alloc(struct ib_device *hca, u8 port,
506 const char *format);
507 void ipoib_ib_tx_timer_func(struct timer_list *t);
508 void ipoib_ib_dev_flush_light(struct work_struct *work);
509 void ipoib_ib_dev_flush_normal(struct work_struct *work);
510 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
511 void ipoib_pkey_event(struct work_struct *work);
512 void ipoib_ib_dev_cleanup(struct net_device *dev);
513
514 int ipoib_ib_dev_open_default(struct net_device *dev);
515 int ipoib_ib_dev_open(struct net_device *dev);
516 int ipoib_ib_dev_stop(struct net_device *dev);
517 void ipoib_ib_dev_up(struct net_device *dev);
518 void ipoib_ib_dev_down(struct net_device *dev);
519 int ipoib_ib_dev_stop_default(struct net_device *dev);
520 void ipoib_pkey_dev_check_presence(struct net_device *dev);
521
522 void ipoib_mcast_join_task(struct work_struct *work);
523 void ipoib_mcast_carrier_on_task(struct work_struct *work);
524 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
525
526 void ipoib_mcast_restart_task(struct work_struct *work);
527 void ipoib_mcast_start_thread(struct net_device *dev);
528 int ipoib_mcast_stop_thread(struct net_device *dev);
529
530 void ipoib_mcast_dev_down(struct net_device *dev);
531 void ipoib_mcast_dev_flush(struct net_device *dev);
532
533 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
534 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
535 struct ipoib_tx_buf *tx_req);
536
537 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
538 struct ipoib_tx_buf *tx_req)
539 {
540 int i, off;
541 struct sk_buff *skb = tx_req->skb;
542 skb_frag_t *frags = skb_shinfo(skb)->frags;
543 int nr_frags = skb_shinfo(skb)->nr_frags;
544 u64 *mapping = tx_req->mapping;
545
546 if (skb_headlen(skb)) {
547 priv->tx_sge[0].addr = mapping[0];
548 priv->tx_sge[0].length = skb_headlen(skb);
549 off = 1;
550 } else
551 off = 0;
552
553 for (i = 0; i < nr_frags; ++i) {
554 priv->tx_sge[i + off].addr = mapping[i + off];
555 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
556 }
557 priv->tx_wr.wr.num_sge = nr_frags + off;
558 }
559
560 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
561 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
562 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
563 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
564 union ib_gid *gid,
565 unsigned long *created,
566 unsigned int *queuelen,
567 unsigned int *complete,
568 unsigned int *send_only);
569
570 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
571 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
572 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
573 struct ipoib_path *path);
574 #endif
575
576 int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
577 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
578 int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
579 union ib_gid *mgid, u16 mlid);
580 void ipoib_mcast_remove_list(struct list_head *remove_list);
581 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
582 struct list_head *remove_list);
583
584 int ipoib_init_qp(struct net_device *dev);
585 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
586 void ipoib_transport_dev_cleanup(struct net_device *dev);
587
588 void ipoib_event(struct ib_event_handler *handler,
589 struct ib_event *record);
590
591 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
592 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
593
594 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
595 u16 pkey, int child_type);
596
597 int __init ipoib_netlink_init(void);
598 void __exit ipoib_netlink_fini(void);
599
600 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
601 int ipoib_set_mode(struct net_device *dev, const char *buf);
602
603 void ipoib_setup_common(struct net_device *dev);
604
605 void ipoib_pkey_open(struct ipoib_dev_priv *priv);
606 void ipoib_drain_cq(struct net_device *dev);
607
608 void ipoib_set_ethtool_ops(struct net_device *dev);
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 -EOPNOTSUPP;
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 */
Linux with added FPC-III support