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
skb_add_pseudo_hdr(struct sk_buff * skb)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
ipoib_priv(const struct net_device * dev)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 reschedule_napi_work;
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 work_struct tx_timeout_work;
360 struct delayed_work ah_reap_task;
361 struct delayed_work neigh_reap_task;
362 struct ib_device *ca;
363 u8 port;
364 u16 pkey;
365 u16 pkey_index;
366 struct ib_pd *pd;
367 struct ib_cq *recv_cq;
368 struct ib_cq *send_cq;
369 struct ib_qp *qp;
370 u32 qkey;
371
372 union ib_gid local_gid;
373 u32 local_lid;
374
375 unsigned int admin_mtu;
376 unsigned int mcast_mtu;
377 unsigned int max_ib_mtu;
378
379 struct ipoib_rx_buf *rx_ring;
380
381 struct ipoib_tx_buf *tx_ring;
382 /* cyclic ring variables for managing tx_ring, for UD only */
383 unsigned int tx_head;
384 unsigned int tx_tail;
385 /* cyclic ring variables for counting overall outstanding send WRs */
386 unsigned int global_tx_head;
387 unsigned int global_tx_tail;
388 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
389 struct ib_ud_wr tx_wr;
390 struct ib_wc send_wc[MAX_SEND_CQE];
391
392 struct ib_recv_wr rx_wr;
393 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
394
395 struct ib_wc ibwc[IPOIB_NUM_WC];
396
397 struct list_head dead_ahs;
398
399 struct ib_event_handler event_handler;
400
401 struct net_device *parent;
402 struct list_head child_intfs;
403 struct list_head list;
404 int child_type;
405
406 #ifdef CONFIG_INFINIBAND_IPOIB_CM
407 struct ipoib_cm_dev_priv cm;
408 #endif
409
410 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
411 struct list_head fs_list;
412 struct dentry *mcg_dentry;
413 struct dentry *path_dentry;
414 #endif
415 u64 hca_caps;
416 u64 kernel_caps;
417 struct ipoib_ethtool_st ethtool;
418 unsigned int max_send_sge;
419 const struct net_device_ops *rn_ops;
420 };
421
422 struct ipoib_ah {
423 struct net_device *dev;
424 struct ib_ah *ah;
425 struct list_head list;
426 struct kref ref;
427 unsigned int last_send;
428 int valid;
429 };
430
431 struct ipoib_path {
432 struct net_device *dev;
433 struct sa_path_rec pathrec;
434 struct ipoib_ah *ah;
435 struct sk_buff_head queue;
436
437 struct list_head neigh_list;
438
439 int query_id;
440 struct ib_sa_query *query;
441 struct completion done;
442
443 struct rb_node rb_node;
444 struct list_head list;
445 };
446
447 struct ipoib_neigh {
448 struct ipoib_ah *ah;
449 #ifdef CONFIG_INFINIBAND_IPOIB_CM
450 struct ipoib_cm_tx *cm;
451 #endif
452 u8 daddr[INFINIBAND_ALEN];
453 struct sk_buff_head queue;
454
455 struct net_device *dev;
456
457 struct list_head list;
458 struct ipoib_neigh __rcu *hnext;
459 struct rcu_head rcu;
460 refcount_t refcnt;
461 unsigned long alive;
462 };
463
464 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
465 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
466
467 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
ipoib_neigh_put(struct ipoib_neigh * neigh)468 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
469 {
470 if (refcount_dec_and_test(&neigh->refcnt))
471 ipoib_neigh_dtor(neigh);
472 }
473 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
474 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
475 struct net_device *dev);
476 void ipoib_neigh_free(struct ipoib_neigh *neigh);
477 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
478
479 extern struct workqueue_struct *ipoib_workqueue;
480
481 /* functions */
482
483 int ipoib_rx_poll(struct napi_struct *napi, int budget);
484 int ipoib_tx_poll(struct napi_struct *napi, int budget);
485 void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr);
486 void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr);
487
488 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
489 struct ib_pd *pd, struct rdma_ah_attr *attr);
490 void ipoib_free_ah(struct kref *kref);
ipoib_put_ah(struct ipoib_ah * ah)491 static inline void ipoib_put_ah(struct ipoib_ah *ah)
492 {
493 kref_put(&ah->ref, ipoib_free_ah);
494 }
495 int ipoib_open(struct net_device *dev);
496 void ipoib_intf_free(struct net_device *dev);
497 int ipoib_add_pkey_attr(struct net_device *dev);
498 int ipoib_add_umcast_attr(struct net_device *dev);
499
500 int ipoib_send(struct net_device *dev, struct sk_buff *skb,
501 struct ib_ah *address, u32 dqpn);
502 void ipoib_reap_ah(struct work_struct *work);
503
504 void ipoib_napi_schedule_work(struct work_struct *work);
505 struct ipoib_path *__path_find(struct net_device *dev, void *gid);
506 void ipoib_mark_paths_invalid(struct net_device *dev);
507 void ipoib_flush_paths(struct net_device *dev);
508 struct net_device *ipoib_intf_alloc(struct ib_device *hca, u32 port,
509 const char *format);
510 int ipoib_intf_init(struct ib_device *hca, u32 port, const char *format,
511 struct net_device *dev);
512 void ipoib_ib_tx_timer_func(struct timer_list *t);
513 void ipoib_ib_dev_flush_light(struct work_struct *work);
514 void ipoib_ib_dev_flush_normal(struct work_struct *work);
515 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
516 void ipoib_ib_tx_timeout_work(struct work_struct *work);
517 void ipoib_pkey_event(struct work_struct *work);
518 void ipoib_ib_dev_cleanup(struct net_device *dev);
519
520 int ipoib_ib_dev_open_default(struct net_device *dev);
521 int ipoib_ib_dev_open(struct net_device *dev);
522 void ipoib_ib_dev_stop(struct net_device *dev);
523 void ipoib_ib_dev_up(struct net_device *dev);
524 void ipoib_ib_dev_down(struct net_device *dev);
525 int ipoib_ib_dev_stop_default(struct net_device *dev);
526 void ipoib_pkey_dev_check_presence(struct net_device *dev);
527
528 void ipoib_mcast_join_task(struct work_struct *work);
529 void ipoib_mcast_carrier_on_task(struct work_struct *work);
530 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
531
532 void ipoib_mcast_restart_task(struct work_struct *work);
533 void ipoib_mcast_start_thread(struct net_device *dev);
534 void ipoib_mcast_stop_thread(struct net_device *dev);
535
536 void ipoib_mcast_dev_down(struct net_device *dev);
537 void ipoib_mcast_dev_flush(struct net_device *dev);
538
539 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
540 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
541 struct ipoib_tx_buf *tx_req);
542
543 struct rtnl_link_ops *ipoib_get_link_ops(void);
544
ipoib_build_sge(struct ipoib_dev_priv * priv,struct ipoib_tx_buf * tx_req)545 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
546 struct ipoib_tx_buf *tx_req)
547 {
548 int i, off;
549 struct sk_buff *skb = tx_req->skb;
550 skb_frag_t *frags = skb_shinfo(skb)->frags;
551 int nr_frags = skb_shinfo(skb)->nr_frags;
552 u64 *mapping = tx_req->mapping;
553
554 if (skb_headlen(skb)) {
555 priv->tx_sge[0].addr = mapping[0];
556 priv->tx_sge[0].length = skb_headlen(skb);
557 off = 1;
558 } else
559 off = 0;
560
561 for (i = 0; i < nr_frags; ++i) {
562 priv->tx_sge[i + off].addr = mapping[i + off];
563 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
564 }
565 priv->tx_wr.wr.num_sge = nr_frags + off;
566 }
567
568 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
569 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
570 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
571 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
572 union ib_gid *gid,
573 unsigned long *created,
574 unsigned int *queuelen,
575 unsigned int *complete,
576 unsigned int *send_only);
577
578 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
579 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
580 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
581 struct ipoib_path *path);
582 #endif
583
584 int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
585 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
586 int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
587 union ib_gid *mgid, u16 mlid);
588 void ipoib_mcast_remove_list(struct list_head *remove_list);
589 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
590 struct list_head *remove_list);
591
592 int ipoib_init_qp(struct net_device *dev);
593 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
594 void ipoib_transport_dev_cleanup(struct net_device *dev);
595
596 void ipoib_event(struct ib_event_handler *handler,
597 struct ib_event *record);
598
599 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
600 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
601
602 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
603 u16 pkey, int child_type);
604
605 int __init ipoib_netlink_init(void);
606 void __exit ipoib_netlink_fini(void);
607
608 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
609 int ipoib_set_mode(struct net_device *dev, const char *buf);
610
611 void ipoib_setup_common(struct net_device *dev);
612
613 void ipoib_pkey_open(struct ipoib_dev_priv *priv);
614 void ipoib_drain_cq(struct net_device *dev);
615
616 void ipoib_set_ethtool_ops(struct net_device *dev);
617
618 #define IPOIB_FLAGS_RC 0x80
619 #define IPOIB_FLAGS_UC 0x40
620
621 /* We don't support UC connections at the moment */
622 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
623
624 #ifdef CONFIG_INFINIBAND_IPOIB_CM
625
626 extern int ipoib_max_conn_qp;
627
ipoib_cm_admin_enabled(struct net_device * dev)628 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
629 {
630 struct ipoib_dev_priv *priv = ipoib_priv(dev);
631 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
632 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
633 }
634
ipoib_cm_enabled(struct net_device * dev,u8 * hwaddr)635 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
636 {
637 struct ipoib_dev_priv *priv = ipoib_priv(dev);
638 return IPOIB_CM_SUPPORTED(hwaddr) &&
639 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
640 }
641
ipoib_cm_up(struct ipoib_neigh * neigh)642 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
643
644 {
645 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
646 }
647
ipoib_cm_get(struct ipoib_neigh * neigh)648 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
649 {
650 return neigh->cm;
651 }
652
ipoib_cm_set(struct ipoib_neigh * neigh,struct ipoib_cm_tx * tx)653 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
654 {
655 neigh->cm = tx;
656 }
657
ipoib_cm_has_srq(struct net_device * dev)658 static inline int ipoib_cm_has_srq(struct net_device *dev)
659 {
660 struct ipoib_dev_priv *priv = ipoib_priv(dev);
661 return !!priv->cm.srq;
662 }
663
ipoib_cm_max_mtu(struct net_device * dev)664 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
665 {
666 struct ipoib_dev_priv *priv = ipoib_priv(dev);
667 return priv->cm.max_cm_mtu;
668 }
669
670 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
671 int ipoib_cm_dev_open(struct net_device *dev);
672 void ipoib_cm_dev_stop(struct net_device *dev);
673 int ipoib_cm_dev_init(struct net_device *dev);
674 int ipoib_cm_add_mode_attr(struct net_device *dev);
675 void ipoib_cm_dev_cleanup(struct net_device *dev);
676 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
677 struct ipoib_neigh *neigh);
678 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
679 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
680 unsigned int mtu);
681 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
682 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
683 #else
684
685 #define ipoib_max_conn_qp 0
686
ipoib_cm_admin_enabled(struct net_device * dev)687 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
688 {
689 return 0;
690 }
ipoib_cm_enabled(struct net_device * dev,u8 * hwaddr)691 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
692
693 {
694 return 0;
695 }
696
ipoib_cm_up(struct ipoib_neigh * neigh)697 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
698
699 {
700 return 0;
701 }
702
ipoib_cm_get(struct ipoib_neigh * neigh)703 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
704 {
705 return NULL;
706 }
707
ipoib_cm_set(struct ipoib_neigh * neigh,struct ipoib_cm_tx * tx)708 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
709 {
710 }
711
ipoib_cm_has_srq(struct net_device * dev)712 static inline int ipoib_cm_has_srq(struct net_device *dev)
713 {
714 return 0;
715 }
716
ipoib_cm_max_mtu(struct net_device * dev)717 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
718 {
719 return 0;
720 }
721
722 static inline
ipoib_cm_send(struct net_device * dev,struct sk_buff * skb,struct ipoib_cm_tx * tx)723 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
724 {
725 return;
726 }
727
728 static inline
ipoib_cm_dev_open(struct net_device * dev)729 int ipoib_cm_dev_open(struct net_device *dev)
730 {
731 return 0;
732 }
733
734 static inline
ipoib_cm_dev_stop(struct net_device * dev)735 void ipoib_cm_dev_stop(struct net_device *dev)
736 {
737 return;
738 }
739
740 static inline
ipoib_cm_dev_init(struct net_device * dev)741 int ipoib_cm_dev_init(struct net_device *dev)
742 {
743 return -EOPNOTSUPP;
744 }
745
746 static inline
ipoib_cm_dev_cleanup(struct net_device * dev)747 void ipoib_cm_dev_cleanup(struct net_device *dev)
748 {
749 return;
750 }
751
752 static inline
ipoib_cm_create_tx(struct net_device * dev,struct ipoib_path * path,struct ipoib_neigh * neigh)753 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
754 struct ipoib_neigh *neigh)
755 {
756 return NULL;
757 }
758
759 static inline
ipoib_cm_destroy_tx(struct ipoib_cm_tx * tx)760 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
761 {
762 return;
763 }
764
765 static inline
ipoib_cm_add_mode_attr(struct net_device * dev)766 int ipoib_cm_add_mode_attr(struct net_device *dev)
767 {
768 return 0;
769 }
770
ipoib_cm_skb_too_long(struct net_device * dev,struct sk_buff * skb,unsigned int mtu)771 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
772 unsigned int mtu)
773 {
774 dev_kfree_skb_any(skb);
775 }
776
ipoib_cm_handle_rx_wc(struct net_device * dev,struct ib_wc * wc)777 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
778 {
779 }
780
ipoib_cm_handle_tx_wc(struct net_device * dev,struct ib_wc * wc)781 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
782 {
783 }
784 #endif
785
786 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
787 void ipoib_create_debug_files(struct net_device *dev);
788 void ipoib_delete_debug_files(struct net_device *dev);
789 void ipoib_register_debugfs(void);
790 void ipoib_unregister_debugfs(void);
791 #else
ipoib_create_debug_files(struct net_device * dev)792 static inline void ipoib_create_debug_files(struct net_device *dev) { }
ipoib_delete_debug_files(struct net_device * dev)793 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
ipoib_register_debugfs(void)794 static inline void ipoib_register_debugfs(void) { }
ipoib_unregister_debugfs(void)795 static inline void ipoib_unregister_debugfs(void) { }
796 #endif
797
798 #define ipoib_printk(level, priv, format, arg...) \
799 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
800 #define ipoib_warn(priv, format, arg...) \
801 do { \
802 static DEFINE_RATELIMIT_STATE(_rs, \
803 10 * HZ /*10 seconds */, \
804 100); \
805 if (__ratelimit(&_rs)) \
806 ipoib_printk(KERN_WARNING, priv, format , ## arg);\
807 } while (0)
808
809 extern int ipoib_sendq_size;
810 extern int ipoib_recvq_size;
811
812 extern struct ib_sa_client ipoib_sa_client;
813
814 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
815 extern int ipoib_debug_level;
816
817 #define ipoib_dbg(priv, format, arg...) \
818 do { \
819 if (ipoib_debug_level > 0) \
820 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
821 } while (0)
822 #define ipoib_dbg_mcast(priv, format, arg...) \
823 do { \
824 if (mcast_debug_level > 0) \
825 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
826 } while (0)
827 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
828 #define ipoib_dbg(priv, format, arg...) \
829 do { (void) (priv); } while (0)
830 #define ipoib_dbg_mcast(priv, format, arg...) \
831 do { (void) (priv); } while (0)
832 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
833
834 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
835 #define ipoib_dbg_data(priv, format, arg...) \
836 do { \
837 if (data_debug_level > 0) \
838 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
839 } while (0)
840 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
841 #define ipoib_dbg_data(priv, format, arg...) \
842 do { (void) (priv); } while (0)
843 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
844
845 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
846
847 #endif /* _IPOIB_H */
848