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_path *path;
252 struct ipoib_tx_buf *tx_ring;
253 unsigned int tx_head;
254 unsigned int tx_tail;
255 unsigned long flags;
256 u32 mtu;
257 unsigned int max_send_sge;
258 };
259
260 struct ipoib_cm_rx_buf {
261 struct sk_buff *skb;
262 u64 mapping[IPOIB_CM_RX_SG];
263 };
264
265 struct ipoib_cm_dev_priv {
266 struct ib_srq *srq;
267 struct ipoib_cm_rx_buf *srq_ring;
268 struct ib_cm_id *id;
269 struct list_head passive_ids; /* state: LIVE */
270 struct list_head rx_error_list; /* state: ERROR */
271 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
272 struct list_head rx_drain_list; /* state: FLUSH, drain started */
273 struct list_head rx_reap_list; /* state: FLUSH, drain done */
274 struct work_struct start_task;
275 struct work_struct reap_task;
276 struct work_struct skb_task;
277 struct work_struct rx_reap_task;
278 struct delayed_work stale_task;
279 struct sk_buff_head skb_queue;
280 struct list_head start_list;
281 struct list_head reap_list;
282 struct ib_wc ibwc[IPOIB_NUM_WC];
283 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
284 struct ib_recv_wr rx_wr;
285 int nonsrq_conn_qp;
286 int max_cm_mtu;
287 int num_frags;
288 };
289
290 struct ipoib_ethtool_st {
291 u16 coalesce_usecs;
292 u16 max_coalesced_frames;
293 };
294
295 struct ipoib_neigh_table;
296
297 struct ipoib_neigh_hash {
298 struct ipoib_neigh_table *ntbl;
299 struct ipoib_neigh __rcu **buckets;
300 struct rcu_head rcu;
301 u32 mask;
302 u32 size;
303 };
304
305 struct ipoib_neigh_table {
306 struct ipoib_neigh_hash __rcu *htbl;
307 atomic_t entries;
308 struct completion flushed;
309 struct completion deleted;
310 };
311
312 struct ipoib_qp_state_validate {
313 struct work_struct work;
314 struct ipoib_dev_priv *priv;
315 };
316
317 /*
318 * Device private locking: network stack tx_lock protects members used
319 * in TX fast path, lock protects everything else. lock nests inside
320 * of tx_lock (ie tx_lock must be acquired first if needed).
321 */
322 struct ipoib_dev_priv {
323 spinlock_t lock;
324
325 struct net_device *dev;
326 void (*next_priv_destructor)(struct net_device *dev);
327
328 struct napi_struct send_napi;
329 struct napi_struct recv_napi;
330
331 unsigned long flags;
332
333 /*
334 * This protects access to the child_intfs list.
335 * To READ from child_intfs the RTNL or vlan_rwsem read side must be
336 * held. To WRITE RTNL and the vlan_rwsem write side must be held (in
337 * that order) This lock exists because we have a few contexts where
338 * we need the child_intfs, but do not want to grab the RTNL.
339 */
340 struct rw_semaphore vlan_rwsem;
341 struct mutex mcast_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 int tx_head;
382 unsigned int 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 int 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 int last_send;
423 int valid;
424 };
425
426 struct ipoib_path {
427 struct net_device *dev;
428 struct sa_path_rec pathrec;
429 struct ipoib_ah *ah;
430 struct sk_buff_head queue;
431
432 struct list_head neigh_list;
433
434 int query_id;
435 struct ib_sa_query *query;
436 struct completion done;
437
438 struct rb_node rb_node;
439 struct list_head list;
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);
ipoib_neigh_put(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);
ipoib_put_ah(struct ipoib_ah * ah)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 void ipoib_intf_free(struct net_device *dev);
492 int ipoib_add_pkey_attr(struct net_device *dev);
493 int ipoib_add_umcast_attr(struct net_device *dev);
494
495 int ipoib_send(struct net_device *dev, struct sk_buff *skb,
496 struct ib_ah *address, u32 dqpn);
497 void ipoib_reap_ah(struct work_struct *work);
498
499 struct ipoib_path *__path_find(struct net_device *dev, void *gid);
500 void ipoib_mark_paths_invalid(struct net_device *dev);
501 void ipoib_flush_paths(struct net_device *dev);
502 struct ipoib_dev_priv *ipoib_intf_alloc(struct ib_device *hca, u8 port,
503 const char *format);
504 void ipoib_ib_tx_timer_func(struct timer_list *t);
505 void ipoib_ib_dev_flush_light(struct work_struct *work);
506 void ipoib_ib_dev_flush_normal(struct work_struct *work);
507 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
508 void ipoib_pkey_event(struct work_struct *work);
509 void ipoib_ib_dev_cleanup(struct net_device *dev);
510
511 int ipoib_ib_dev_open_default(struct net_device *dev);
512 int ipoib_ib_dev_open(struct net_device *dev);
513 int ipoib_ib_dev_stop(struct net_device *dev);
514 void ipoib_ib_dev_up(struct net_device *dev);
515 void ipoib_ib_dev_down(struct net_device *dev);
516 int ipoib_ib_dev_stop_default(struct net_device *dev);
517 void ipoib_pkey_dev_check_presence(struct net_device *dev);
518
519 void ipoib_mcast_join_task(struct work_struct *work);
520 void ipoib_mcast_carrier_on_task(struct work_struct *work);
521 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
522
523 void ipoib_mcast_restart_task(struct work_struct *work);
524 void ipoib_mcast_start_thread(struct net_device *dev);
525 int ipoib_mcast_stop_thread(struct net_device *dev);
526
527 void ipoib_mcast_dev_down(struct net_device *dev);
528 void ipoib_mcast_dev_flush(struct net_device *dev);
529
530 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
531 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
532 struct ipoib_tx_buf *tx_req);
533
ipoib_build_sge(struct ipoib_dev_priv * priv,struct ipoib_tx_buf * tx_req)534 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
535 struct ipoib_tx_buf *tx_req)
536 {
537 int i, off;
538 struct sk_buff *skb = tx_req->skb;
539 skb_frag_t *frags = skb_shinfo(skb)->frags;
540 int nr_frags = skb_shinfo(skb)->nr_frags;
541 u64 *mapping = tx_req->mapping;
542
543 if (skb_headlen(skb)) {
544 priv->tx_sge[0].addr = mapping[0];
545 priv->tx_sge[0].length = skb_headlen(skb);
546 off = 1;
547 } else
548 off = 0;
549
550 for (i = 0; i < nr_frags; ++i) {
551 priv->tx_sge[i + off].addr = mapping[i + off];
552 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
553 }
554 priv->tx_wr.wr.num_sge = nr_frags + off;
555 }
556
557 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
558 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
559 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
560 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
561 union ib_gid *gid,
562 unsigned long *created,
563 unsigned int *queuelen,
564 unsigned int *complete,
565 unsigned int *send_only);
566
567 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
568 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
569 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
570 struct ipoib_path *path);
571 #endif
572
573 int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
574 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
575 int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
576 union ib_gid *mgid, u16 mlid);
577 void ipoib_mcast_remove_list(struct list_head *remove_list);
578 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
579 struct list_head *remove_list);
580
581 int ipoib_init_qp(struct net_device *dev);
582 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
583 void ipoib_transport_dev_cleanup(struct net_device *dev);
584
585 void ipoib_event(struct ib_event_handler *handler,
586 struct ib_event *record);
587
588 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
589 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
590
591 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
592 u16 pkey, int child_type);
593
594 int __init ipoib_netlink_init(void);
595 void __exit ipoib_netlink_fini(void);
596
597 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
598 int ipoib_set_mode(struct net_device *dev, const char *buf);
599
600 void ipoib_setup_common(struct net_device *dev);
601
602 void ipoib_pkey_open(struct ipoib_dev_priv *priv);
603 void ipoib_drain_cq(struct net_device *dev);
604
605 void ipoib_set_ethtool_ops(struct net_device *dev);
606
607 #define IPOIB_FLAGS_RC 0x80
608 #define IPOIB_FLAGS_UC 0x40
609
610 /* We don't support UC connections at the moment */
611 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
612
613 #ifdef CONFIG_INFINIBAND_IPOIB_CM
614
615 extern int ipoib_max_conn_qp;
616
ipoib_cm_admin_enabled(struct net_device * dev)617 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
618 {
619 struct ipoib_dev_priv *priv = ipoib_priv(dev);
620 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
621 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
622 }
623
ipoib_cm_enabled(struct net_device * dev,u8 * hwaddr)624 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
625 {
626 struct ipoib_dev_priv *priv = ipoib_priv(dev);
627 return IPOIB_CM_SUPPORTED(hwaddr) &&
628 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
629 }
630
ipoib_cm_up(struct ipoib_neigh * neigh)631 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
632
633 {
634 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
635 }
636
ipoib_cm_get(struct ipoib_neigh * neigh)637 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
638 {
639 return neigh->cm;
640 }
641
ipoib_cm_set(struct ipoib_neigh * neigh,struct ipoib_cm_tx * tx)642 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
643 {
644 neigh->cm = tx;
645 }
646
ipoib_cm_has_srq(struct net_device * dev)647 static inline int ipoib_cm_has_srq(struct net_device *dev)
648 {
649 struct ipoib_dev_priv *priv = ipoib_priv(dev);
650 return !!priv->cm.srq;
651 }
652
ipoib_cm_max_mtu(struct net_device * dev)653 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
654 {
655 struct ipoib_dev_priv *priv = ipoib_priv(dev);
656 return priv->cm.max_cm_mtu;
657 }
658
659 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
660 int ipoib_cm_dev_open(struct net_device *dev);
661 void ipoib_cm_dev_stop(struct net_device *dev);
662 int ipoib_cm_dev_init(struct net_device *dev);
663 int ipoib_cm_add_mode_attr(struct net_device *dev);
664 void ipoib_cm_dev_cleanup(struct net_device *dev);
665 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
666 struct ipoib_neigh *neigh);
667 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
668 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
669 unsigned int mtu);
670 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
671 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
672 #else
673
674 struct ipoib_cm_tx;
675
676 #define ipoib_max_conn_qp 0
677
ipoib_cm_admin_enabled(struct net_device * dev)678 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
679 {
680 return 0;
681 }
ipoib_cm_enabled(struct net_device * dev,u8 * hwaddr)682 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
683
684 {
685 return 0;
686 }
687
ipoib_cm_up(struct ipoib_neigh * neigh)688 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
689
690 {
691 return 0;
692 }
693
ipoib_cm_get(struct ipoib_neigh * neigh)694 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
695 {
696 return NULL;
697 }
698
ipoib_cm_set(struct ipoib_neigh * neigh,struct ipoib_cm_tx * tx)699 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
700 {
701 }
702
ipoib_cm_has_srq(struct net_device * dev)703 static inline int ipoib_cm_has_srq(struct net_device *dev)
704 {
705 return 0;
706 }
707
ipoib_cm_max_mtu(struct net_device * dev)708 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
709 {
710 return 0;
711 }
712
713 static inline
ipoib_cm_send(struct net_device * dev,struct sk_buff * skb,struct ipoib_cm_tx * tx)714 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
715 {
716 return;
717 }
718
719 static inline
ipoib_cm_dev_open(struct net_device * dev)720 int ipoib_cm_dev_open(struct net_device *dev)
721 {
722 return 0;
723 }
724
725 static inline
ipoib_cm_dev_stop(struct net_device * dev)726 void ipoib_cm_dev_stop(struct net_device *dev)
727 {
728 return;
729 }
730
731 static inline
ipoib_cm_dev_init(struct net_device * dev)732 int ipoib_cm_dev_init(struct net_device *dev)
733 {
734 return -EOPNOTSUPP;
735 }
736
737 static inline
ipoib_cm_dev_cleanup(struct net_device * dev)738 void ipoib_cm_dev_cleanup(struct net_device *dev)
739 {
740 return;
741 }
742
743 static inline
ipoib_cm_create_tx(struct net_device * dev,struct ipoib_path * path,struct ipoib_neigh * neigh)744 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
745 struct ipoib_neigh *neigh)
746 {
747 return NULL;
748 }
749
750 static inline
ipoib_cm_destroy_tx(struct ipoib_cm_tx * tx)751 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
752 {
753 return;
754 }
755
756 static inline
ipoib_cm_add_mode_attr(struct net_device * dev)757 int ipoib_cm_add_mode_attr(struct net_device *dev)
758 {
759 return 0;
760 }
761
ipoib_cm_skb_too_long(struct net_device * dev,struct sk_buff * skb,unsigned int mtu)762 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
763 unsigned int mtu)
764 {
765 dev_kfree_skb_any(skb);
766 }
767
ipoib_cm_handle_rx_wc(struct net_device * dev,struct ib_wc * wc)768 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
769 {
770 }
771
ipoib_cm_handle_tx_wc(struct net_device * dev,struct ib_wc * wc)772 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
773 {
774 }
775 #endif
776
777 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
778 void ipoib_create_debug_files(struct net_device *dev);
779 void ipoib_delete_debug_files(struct net_device *dev);
780 int ipoib_register_debugfs(void);
781 void ipoib_unregister_debugfs(void);
782 #else
ipoib_create_debug_files(struct net_device * dev)783 static inline void ipoib_create_debug_files(struct net_device *dev) { }
ipoib_delete_debug_files(struct net_device * dev)784 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
ipoib_register_debugfs(void)785 static inline int ipoib_register_debugfs(void) { return 0; }
ipoib_unregister_debugfs(void)786 static inline void ipoib_unregister_debugfs(void) { }
787 #endif
788
789 #define ipoib_printk(level, priv, format, arg...) \
790 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
791 #define ipoib_warn(priv, format, arg...) \
792 do { \
793 static DEFINE_RATELIMIT_STATE(_rs, \
794 10 * HZ /*10 seconds */, \
795 100); \
796 if (__ratelimit(&_rs)) \
797 ipoib_printk(KERN_WARNING, priv, format , ## arg);\
798 } while (0)
799
800 extern int ipoib_sendq_size;
801 extern int ipoib_recvq_size;
802
803 extern struct ib_sa_client ipoib_sa_client;
804
805 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
806 extern int ipoib_debug_level;
807
808 #define ipoib_dbg(priv, format, arg...) \
809 do { \
810 if (ipoib_debug_level > 0) \
811 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
812 } while (0)
813 #define ipoib_dbg_mcast(priv, format, arg...) \
814 do { \
815 if (mcast_debug_level > 0) \
816 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
817 } while (0)
818 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
819 #define ipoib_dbg(priv, format, arg...) \
820 do { (void) (priv); } while (0)
821 #define ipoib_dbg_mcast(priv, format, arg...) \
822 do { (void) (priv); } while (0)
823 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
824
825 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
826 #define ipoib_dbg_data(priv, format, arg...) \
827 do { \
828 if (data_debug_level > 0) \
829 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
830 } while (0)
831 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
832 #define ipoib_dbg_data(priv, format, arg...) \
833 do { (void) (priv); } while (0)
834 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
835
836 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
837
838 extern const char ipoib_driver_version[];
839
840 #endif /* _IPOIB_H */
841
