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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
57enum ipoib_flush_level {
58 IPOIB_FLUSH_LIGHT,
59 IPOIB_FLUSH_NORMAL,
60 IPOIB_FLUSH_HEAVY
61};
62
63enum {
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
131struct ipoib_header {
132 __be16 proto;
133 u16 reserved;
134};
135
136struct ipoib_pseudo_header {
137 u8 hwaddr[INFINIBAND_ALEN];
138};
139
140static 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
153static 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) */
161struct 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
184struct ipoib_rx_buf {
185 struct sk_buff *skb;
186 u64 mapping[IPOIB_UD_RX_SG];
187};
188
189struct ipoib_tx_buf {
190 struct sk_buff *skb;
191 u64 mapping[MAX_SKB_FRAGS + 1];
192};
193
194struct ib_cm_id;
195
196struct 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
228enum 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
234struct 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
245struct 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
259struct ipoib_cm_rx_buf {
260 struct sk_buff *skb;
261 u64 mapping[IPOIB_CM_RX_SG];
262};
263
264struct 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
289struct ipoib_ethtool_st {
290 u16 coalesce_usecs;
291 u16 max_coalesced_frames;
292};
293
294struct ipoib_neigh_table;
295
296struct 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
304struct ipoib_neigh_table {
305 struct ipoib_neigh_hash __rcu *htbl;
306 atomic_t entries;
307 struct completion flushed;
308 struct completion deleted;
309};
310
311struct 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 */
321struct 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
422struct 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
431struct 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
447struct 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
467void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
468static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
469{
470 if (refcount_dec_and_test(&neigh->refcnt))
471 ipoib_neigh_dtor(neigh);
472}
473struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
474struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
475 struct net_device *dev);
476void ipoib_neigh_free(struct ipoib_neigh *neigh);
477void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
478
479extern struct workqueue_struct *ipoib_workqueue;
480
481/* functions */
482
483int ipoib_rx_poll(struct napi_struct *napi, int budget);
484int ipoib_tx_poll(struct napi_struct *napi, int budget);
485void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr);
486void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr);
487
488struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
489 struct ib_pd *pd, struct rdma_ah_attr *attr);
490void ipoib_free_ah(struct kref *kref);
491static inline void ipoib_put_ah(struct ipoib_ah *ah)
492{
493 kref_put(&ah->ref, ipoib_free_ah);
494}
495int ipoib_open(struct net_device *dev);
496void ipoib_intf_free(struct net_device *dev);
497int ipoib_add_pkey_attr(struct net_device *dev);
498int ipoib_add_umcast_attr(struct net_device *dev);
499
500int ipoib_send(struct net_device *dev, struct sk_buff *skb,
501 struct ib_ah *address, u32 dqpn);
502void ipoib_reap_ah(struct work_struct *work);
503
504void ipoib_napi_schedule_work(struct work_struct *work);
505struct ipoib_path *__path_find(struct net_device *dev, void *gid);
506void ipoib_mark_paths_invalid(struct net_device *dev);
507void ipoib_flush_paths(struct net_device *dev);
508struct net_device *ipoib_intf_alloc(struct ib_device *hca, u32 port,
509 const char *format);
510int ipoib_intf_init(struct ib_device *hca, u32 port, const char *format,
511 struct net_device *dev);
512void ipoib_ib_tx_timer_func(struct timer_list *t);
513void ipoib_ib_dev_flush_light(struct work_struct *work);
514void ipoib_ib_dev_flush_normal(struct work_struct *work);
515void ipoib_ib_dev_flush_heavy(struct work_struct *work);
516void ipoib_ib_tx_timeout_work(struct work_struct *work);
517void ipoib_pkey_event(struct work_struct *work);
518void ipoib_ib_dev_cleanup(struct net_device *dev);
519
520int ipoib_ib_dev_open_default(struct net_device *dev);
521int ipoib_ib_dev_open(struct net_device *dev);
522void ipoib_ib_dev_stop(struct net_device *dev);
523void ipoib_ib_dev_up(struct net_device *dev);
524void ipoib_ib_dev_down(struct net_device *dev);
525int ipoib_ib_dev_stop_default(struct net_device *dev);
526void ipoib_pkey_dev_check_presence(struct net_device *dev);
527
528void ipoib_mcast_join_task(struct work_struct *work);
529void ipoib_mcast_carrier_on_task(struct work_struct *work);
530void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
531
532void ipoib_mcast_restart_task(struct work_struct *work);
533void ipoib_mcast_start_thread(struct net_device *dev);
534void ipoib_mcast_stop_thread(struct net_device *dev);
535
536void ipoib_mcast_dev_down(struct net_device *dev);
537void ipoib_mcast_dev_flush(struct net_device *dev);
538
539int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
540void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
541 struct ipoib_tx_buf *tx_req);
542
543struct rtnl_link_ops *ipoib_get_link_ops(void);
544
545static 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
569struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
570int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
571void 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
578struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
579int ipoib_path_iter_next(struct ipoib_path_iter *iter);
580void ipoib_path_iter_read(struct ipoib_path_iter *iter,
581 struct ipoib_path *path);
582#endif
583
584int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
585 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
586int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
587 union ib_gid *mgid, u16 mlid);
588void ipoib_mcast_remove_list(struct list_head *remove_list);
589void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
590 struct list_head *remove_list);
591
592int ipoib_init_qp(struct net_device *dev);
593int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
594void ipoib_transport_dev_cleanup(struct net_device *dev);
595
596void ipoib_event(struct ib_event_handler *handler,
597 struct ib_event *record);
598
599int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
600int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
601
602int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
603 u16 pkey, int child_type);
604
605int __init ipoib_netlink_init(void);
606void __exit ipoib_netlink_fini(void);
607
608void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
609int ipoib_set_mode(struct net_device *dev, const char *buf);
610
611void ipoib_setup_common(struct net_device *dev);
612
613void ipoib_pkey_open(struct ipoib_dev_priv *priv);
614void ipoib_drain_cq(struct net_device *dev);
615
616void 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
626extern int ipoib_max_conn_qp;
627
628static 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
635static 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
642static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
643
644{
645 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
646}
647
648static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
649{
650 return neigh->cm;
651}
652
653static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
654{
655 neigh->cm = tx;
656}
657
658static 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
664static 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
670void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
671int ipoib_cm_dev_open(struct net_device *dev);
672void ipoib_cm_dev_stop(struct net_device *dev);
673int ipoib_cm_dev_init(struct net_device *dev);
674int ipoib_cm_add_mode_attr(struct net_device *dev);
675void ipoib_cm_dev_cleanup(struct net_device *dev);
676struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
677 struct ipoib_neigh *neigh);
678void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
679void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
680 unsigned int mtu);
681void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
682void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
683#else
684
685#define ipoib_max_conn_qp 0
686
687static inline int ipoib_cm_admin_enabled(struct net_device *dev)
688{
689 return 0;
690}
691static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
692
693{
694 return 0;
695}
696
697static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
698
699{
700 return 0;
701}
702
703static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
704{
705 return NULL;
706}
707
708static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
709{
710}
711
712static inline int ipoib_cm_has_srq(struct net_device *dev)
713{
714 return 0;
715}
716
717static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
718{
719 return 0;
720}
721
722static inline
723void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
724{
725 return;
726}
727
728static inline
729int ipoib_cm_dev_open(struct net_device *dev)
730{
731 return 0;
732}
733
734static inline
735void ipoib_cm_dev_stop(struct net_device *dev)
736{
737 return;
738}
739
740static inline
741int ipoib_cm_dev_init(struct net_device *dev)
742{
743 return -EOPNOTSUPP;
744}
745
746static inline
747void ipoib_cm_dev_cleanup(struct net_device *dev)
748{
749 return;
750}
751
752static inline
753struct 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
759static inline
760void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
761{
762 return;
763}
764
765static inline
766int ipoib_cm_add_mode_attr(struct net_device *dev)
767{
768 return 0;
769}
770
771static 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
777static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
778{
779}
780
781static 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
787void ipoib_create_debug_files(struct net_device *dev);
788void ipoib_delete_debug_files(struct net_device *dev);
789void ipoib_register_debugfs(void);
790void ipoib_unregister_debugfs(void);
791#else
792static inline void ipoib_create_debug_files(struct net_device *dev) { }
793static inline void ipoib_delete_debug_files(struct net_device *dev) { }
794static inline void ipoib_register_debugfs(void) { }
795static 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...) \
801do { \
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
809extern int ipoib_sendq_size;
810extern int ipoib_recvq_size;
811
812extern struct ib_sa_client ipoib_sa_client;
813
814#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
815extern 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 */
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
56/* constants */
57
58enum ipoib_flush_level {
59 IPOIB_FLUSH_LIGHT,
60 IPOIB_FLUSH_NORMAL,
61 IPOIB_FLUSH_HEAVY
62};
63
64enum {
65 IPOIB_ENCAP_LEN = 4,
66
67 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
68 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */
69
70 IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */
71 IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN,
72 IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
73 IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
74 IPOIB_RX_RING_SIZE = 256,
75 IPOIB_TX_RING_SIZE = 128,
76 IPOIB_MAX_QUEUE_SIZE = 8192,
77 IPOIB_MIN_QUEUE_SIZE = 2,
78 IPOIB_CM_MAX_CONN_QP = 4096,
79
80 IPOIB_NUM_WC = 4,
81
82 IPOIB_MAX_PATH_REC_QUEUE = 3,
83 IPOIB_MAX_MCAST_QUEUE = 3,
84
85 IPOIB_FLAG_OPER_UP = 0,
86 IPOIB_FLAG_INITIALIZED = 1,
87 IPOIB_FLAG_ADMIN_UP = 2,
88 IPOIB_PKEY_ASSIGNED = 3,
89 IPOIB_PKEY_STOP = 4,
90 IPOIB_FLAG_SUBINTERFACE = 5,
91 IPOIB_MCAST_RUN = 6,
92 IPOIB_STOP_REAPER = 7,
93 IPOIB_FLAG_ADMIN_CM = 9,
94 IPOIB_FLAG_UMCAST = 10,
95 IPOIB_STOP_NEIGH_GC = 11,
96 IPOIB_NEIGH_TBL_FLUSH = 12,
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 IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */
103 IPOIB_MCAST_FLAG_ATTACHED = 3,
104 IPOIB_MCAST_JOIN_STARTED = 4,
105
106 MAX_SEND_CQE = 16,
107 IPOIB_CM_COPYBREAK = 256,
108
109 IPOIB_NON_CHILD = 0,
110 IPOIB_LEGACY_CHILD = 1,
111 IPOIB_RTNL_CHILD = 2,
112};
113
114#define IPOIB_OP_RECV (1ul << 31)
115#ifdef CONFIG_INFINIBAND_IPOIB_CM
116#define IPOIB_OP_CM (1ul << 30)
117#else
118#define IPOIB_OP_CM (0)
119#endif
120
121#define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
122
123/* structs */
124
125struct ipoib_header {
126 __be16 proto;
127 u16 reserved;
128};
129
130struct ipoib_cb {
131 struct qdisc_skb_cb qdisc_cb;
132 u8 hwaddr[INFINIBAND_ALEN];
133};
134
135/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
136struct ipoib_mcast {
137 struct ib_sa_mcmember_rec mcmember;
138 struct ib_sa_multicast *mc;
139 struct ipoib_ah *ah;
140
141 struct rb_node rb_node;
142 struct list_head list;
143
144 unsigned long created;
145 unsigned long backoff;
146
147 unsigned long flags;
148 unsigned char logcount;
149
150 struct list_head neigh_list;
151
152 struct sk_buff_head pkt_queue;
153
154 struct net_device *dev;
155 struct completion done;
156};
157
158struct ipoib_rx_buf {
159 struct sk_buff *skb;
160 u64 mapping[IPOIB_UD_RX_SG];
161};
162
163struct ipoib_tx_buf {
164 struct sk_buff *skb;
165 u64 mapping[MAX_SKB_FRAGS + 1];
166};
167
168struct ipoib_cm_tx_buf {
169 struct sk_buff *skb;
170 u64 mapping;
171};
172
173struct ib_cm_id;
174
175struct ipoib_cm_data {
176 __be32 qpn; /* High byte MUST be ignored on receive */
177 __be32 mtu;
178};
179
180/*
181 * Quoting 10.3.1 Queue Pair and EE Context States:
182 *
183 * Note, for QPs that are associated with an SRQ, the Consumer should take the
184 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
185 * Reset State. The Consumer may invoke the Destroy QP without first performing
186 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
187 * Last WQE Reached Event. However, if the Consumer does not wait for the
188 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
189 * leakage may occur. Therefore, it is good programming practice to tear down a
190 * QP that is associated with an SRQ by using the following process:
191 *
192 * - Put the QP in the Error State
193 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
194 * - either:
195 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
196 * to be empty or the number of Poll CQ operations has exceeded
197 * CQ capacity size;
198 * - or
199 * post another WR that completes on the same CQ and wait for this
200 * WR to return as a WC;
201 * - and then invoke a Destroy QP or Reset QP.
202 *
203 * We use the second option and wait for a completion on the
204 * same CQ before destroying QPs attached to our SRQ.
205 */
206
207enum ipoib_cm_state {
208 IPOIB_CM_RX_LIVE,
209 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
210 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
211};
212
213struct ipoib_cm_rx {
214 struct ib_cm_id *id;
215 struct ib_qp *qp;
216 struct ipoib_cm_rx_buf *rx_ring;
217 struct list_head list;
218 struct net_device *dev;
219 unsigned long jiffies;
220 enum ipoib_cm_state state;
221 int recv_count;
222};
223
224struct ipoib_cm_tx {
225 struct ib_cm_id *id;
226 struct ib_qp *qp;
227 struct list_head list;
228 struct net_device *dev;
229 struct ipoib_neigh *neigh;
230 struct ipoib_path *path;
231 struct ipoib_cm_tx_buf *tx_ring;
232 unsigned tx_head;
233 unsigned tx_tail;
234 unsigned long flags;
235 u32 mtu;
236};
237
238struct ipoib_cm_rx_buf {
239 struct sk_buff *skb;
240 u64 mapping[IPOIB_CM_RX_SG];
241};
242
243struct ipoib_cm_dev_priv {
244 struct ib_srq *srq;
245 struct ipoib_cm_rx_buf *srq_ring;
246 struct ib_cm_id *id;
247 struct list_head passive_ids; /* state: LIVE */
248 struct list_head rx_error_list; /* state: ERROR */
249 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
250 struct list_head rx_drain_list; /* state: FLUSH, drain started */
251 struct list_head rx_reap_list; /* state: FLUSH, drain done */
252 struct work_struct start_task;
253 struct work_struct reap_task;
254 struct work_struct skb_task;
255 struct work_struct rx_reap_task;
256 struct delayed_work stale_task;
257 struct sk_buff_head skb_queue;
258 struct list_head start_list;
259 struct list_head reap_list;
260 struct ib_wc ibwc[IPOIB_NUM_WC];
261 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
262 struct ib_recv_wr rx_wr;
263 int nonsrq_conn_qp;
264 int max_cm_mtu;
265 int num_frags;
266};
267
268struct ipoib_ethtool_st {
269 u16 coalesce_usecs;
270 u16 max_coalesced_frames;
271};
272
273struct ipoib_neigh_table;
274
275struct ipoib_neigh_hash {
276 struct ipoib_neigh_table *ntbl;
277 struct ipoib_neigh __rcu **buckets;
278 struct rcu_head rcu;
279 u32 mask;
280 u32 size;
281};
282
283struct ipoib_neigh_table {
284 struct ipoib_neigh_hash __rcu *htbl;
285 atomic_t entries;
286 struct completion flushed;
287 struct completion deleted;
288};
289
290/*
291 * Device private locking: network stack tx_lock protects members used
292 * in TX fast path, lock protects everything else. lock nests inside
293 * of tx_lock (ie tx_lock must be acquired first if needed).
294 */
295struct ipoib_dev_priv {
296 spinlock_t lock;
297
298 struct net_device *dev;
299
300 struct napi_struct napi;
301
302 unsigned long flags;
303
304 struct rw_semaphore vlan_rwsem;
305
306 struct rb_root path_tree;
307 struct list_head path_list;
308
309 struct ipoib_neigh_table ntbl;
310
311 struct ipoib_mcast *broadcast;
312 struct list_head multicast_list;
313 struct rb_root multicast_tree;
314
315 struct delayed_work pkey_poll_task;
316 struct delayed_work mcast_task;
317 struct work_struct carrier_on_task;
318 struct work_struct flush_light;
319 struct work_struct flush_normal;
320 struct work_struct flush_heavy;
321 struct work_struct restart_task;
322 struct delayed_work ah_reap_task;
323 struct delayed_work neigh_reap_task;
324 struct ib_device *ca;
325 u8 port;
326 u16 pkey;
327 u16 pkey_index;
328 struct ib_pd *pd;
329 struct ib_mr *mr;
330 struct ib_cq *recv_cq;
331 struct ib_cq *send_cq;
332 struct ib_qp *qp;
333 u32 qkey;
334
335 union ib_gid local_gid;
336 u16 local_lid;
337
338 unsigned int admin_mtu;
339 unsigned int mcast_mtu;
340 unsigned int max_ib_mtu;
341
342 struct ipoib_rx_buf *rx_ring;
343
344 struct ipoib_tx_buf *tx_ring;
345 unsigned tx_head;
346 unsigned tx_tail;
347 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
348 struct ib_send_wr tx_wr;
349 unsigned tx_outstanding;
350 struct ib_wc send_wc[MAX_SEND_CQE];
351
352 struct ib_recv_wr rx_wr;
353 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
354
355 struct ib_wc ibwc[IPOIB_NUM_WC];
356
357 struct list_head dead_ahs;
358
359 struct ib_event_handler event_handler;
360
361 struct net_device *parent;
362 struct list_head child_intfs;
363 struct list_head list;
364 int child_type;
365
366#ifdef CONFIG_INFINIBAND_IPOIB_CM
367 struct ipoib_cm_dev_priv cm;
368#endif
369
370#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
371 struct list_head fs_list;
372 struct dentry *mcg_dentry;
373 struct dentry *path_dentry;
374#endif
375 int hca_caps;
376 struct ipoib_ethtool_st ethtool;
377 struct timer_list poll_timer;
378};
379
380struct ipoib_ah {
381 struct net_device *dev;
382 struct ib_ah *ah;
383 struct list_head list;
384 struct kref ref;
385 unsigned last_send;
386};
387
388struct ipoib_path {
389 struct net_device *dev;
390 struct ib_sa_path_rec pathrec;
391 struct ipoib_ah *ah;
392 struct sk_buff_head queue;
393
394 struct list_head neigh_list;
395
396 int query_id;
397 struct ib_sa_query *query;
398 struct completion done;
399
400 struct rb_node rb_node;
401 struct list_head list;
402 int valid;
403};
404
405struct ipoib_neigh {
406 struct ipoib_ah *ah;
407#ifdef CONFIG_INFINIBAND_IPOIB_CM
408 struct ipoib_cm_tx *cm;
409#endif
410 u8 daddr[INFINIBAND_ALEN];
411 struct sk_buff_head queue;
412
413 struct net_device *dev;
414
415 struct list_head list;
416 struct ipoib_neigh __rcu *hnext;
417 struct rcu_head rcu;
418 atomic_t refcnt;
419 unsigned long alive;
420};
421
422#define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
423#define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
424
425static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
426{
427 return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
428}
429
430void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
431static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
432{
433 if (atomic_dec_and_test(&neigh->refcnt))
434 ipoib_neigh_dtor(neigh);
435}
436struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
437struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
438 struct net_device *dev);
439void ipoib_neigh_free(struct ipoib_neigh *neigh);
440void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
441
442extern struct workqueue_struct *ipoib_workqueue;
443
444/* functions */
445
446int ipoib_poll(struct napi_struct *napi, int budget);
447void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
448void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
449
450struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
451 struct ib_pd *pd, struct ib_ah_attr *attr);
452void ipoib_free_ah(struct kref *kref);
453static inline void ipoib_put_ah(struct ipoib_ah *ah)
454{
455 kref_put(&ah->ref, ipoib_free_ah);
456}
457int ipoib_open(struct net_device *dev);
458int ipoib_add_pkey_attr(struct net_device *dev);
459int ipoib_add_umcast_attr(struct net_device *dev);
460
461void ipoib_send(struct net_device *dev, struct sk_buff *skb,
462 struct ipoib_ah *address, u32 qpn);
463void ipoib_reap_ah(struct work_struct *work);
464
465void ipoib_mark_paths_invalid(struct net_device *dev);
466void ipoib_flush_paths(struct net_device *dev);
467struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
468
469int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
470void ipoib_ib_dev_flush_light(struct work_struct *work);
471void ipoib_ib_dev_flush_normal(struct work_struct *work);
472void ipoib_ib_dev_flush_heavy(struct work_struct *work);
473void ipoib_pkey_event(struct work_struct *work);
474void ipoib_ib_dev_cleanup(struct net_device *dev);
475
476int ipoib_ib_dev_open(struct net_device *dev);
477int ipoib_ib_dev_up(struct net_device *dev);
478int ipoib_ib_dev_down(struct net_device *dev, int flush);
479int ipoib_ib_dev_stop(struct net_device *dev, int flush);
480
481int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
482void ipoib_dev_cleanup(struct net_device *dev);
483
484void ipoib_mcast_join_task(struct work_struct *work);
485void ipoib_mcast_carrier_on_task(struct work_struct *work);
486void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
487
488void ipoib_mcast_restart_task(struct work_struct *work);
489int ipoib_mcast_start_thread(struct net_device *dev);
490int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
491
492void ipoib_mcast_dev_down(struct net_device *dev);
493void ipoib_mcast_dev_flush(struct net_device *dev);
494
495#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
496struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
497int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
498void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
499 union ib_gid *gid,
500 unsigned long *created,
501 unsigned int *queuelen,
502 unsigned int *complete,
503 unsigned int *send_only);
504
505struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
506int ipoib_path_iter_next(struct ipoib_path_iter *iter);
507void ipoib_path_iter_read(struct ipoib_path_iter *iter,
508 struct ipoib_path *path);
509#endif
510
511int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
512 union ib_gid *mgid, int set_qkey);
513
514int ipoib_init_qp(struct net_device *dev);
515int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
516void ipoib_transport_dev_cleanup(struct net_device *dev);
517
518void ipoib_event(struct ib_event_handler *handler,
519 struct ib_event *record);
520
521int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
522int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
523
524int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
525 u16 pkey, int child_type);
526
527int __init ipoib_netlink_init(void);
528void __exit ipoib_netlink_fini(void);
529
530void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
531int ipoib_set_mode(struct net_device *dev, const char *buf);
532
533void ipoib_setup(struct net_device *dev);
534
535void ipoib_pkey_poll(struct work_struct *work);
536int ipoib_pkey_dev_delay_open(struct net_device *dev);
537void ipoib_drain_cq(struct net_device *dev);
538
539void ipoib_set_ethtool_ops(struct net_device *dev);
540int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
541
542#define IPOIB_FLAGS_RC 0x80
543#define IPOIB_FLAGS_UC 0x40
544
545/* We don't support UC connections at the moment */
546#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
547
548#ifdef CONFIG_INFINIBAND_IPOIB_CM
549
550extern int ipoib_max_conn_qp;
551
552static inline int ipoib_cm_admin_enabled(struct net_device *dev)
553{
554 struct ipoib_dev_priv *priv = netdev_priv(dev);
555 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
556 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
557}
558
559static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
560{
561 struct ipoib_dev_priv *priv = netdev_priv(dev);
562 return IPOIB_CM_SUPPORTED(hwaddr) &&
563 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
564}
565
566static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
567
568{
569 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
570}
571
572static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
573{
574 return neigh->cm;
575}
576
577static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
578{
579 neigh->cm = tx;
580}
581
582static inline int ipoib_cm_has_srq(struct net_device *dev)
583{
584 struct ipoib_dev_priv *priv = netdev_priv(dev);
585 return !!priv->cm.srq;
586}
587
588static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
589{
590 struct ipoib_dev_priv *priv = netdev_priv(dev);
591 return priv->cm.max_cm_mtu;
592}
593
594void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
595int ipoib_cm_dev_open(struct net_device *dev);
596void ipoib_cm_dev_stop(struct net_device *dev);
597int ipoib_cm_dev_init(struct net_device *dev);
598int ipoib_cm_add_mode_attr(struct net_device *dev);
599void ipoib_cm_dev_cleanup(struct net_device *dev);
600struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
601 struct ipoib_neigh *neigh);
602void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
603void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
604 unsigned int mtu);
605void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
606void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
607#else
608
609struct ipoib_cm_tx;
610
611#define ipoib_max_conn_qp 0
612
613static inline int ipoib_cm_admin_enabled(struct net_device *dev)
614{
615 return 0;
616}
617static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
618
619{
620 return 0;
621}
622
623static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
624
625{
626 return 0;
627}
628
629static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
630{
631 return NULL;
632}
633
634static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
635{
636}
637
638static inline int ipoib_cm_has_srq(struct net_device *dev)
639{
640 return 0;
641}
642
643static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
644{
645 return 0;
646}
647
648static inline
649void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
650{
651 return;
652}
653
654static inline
655int ipoib_cm_dev_open(struct net_device *dev)
656{
657 return 0;
658}
659
660static inline
661void ipoib_cm_dev_stop(struct net_device *dev)
662{
663 return;
664}
665
666static inline
667int ipoib_cm_dev_init(struct net_device *dev)
668{
669 return -ENOSYS;
670}
671
672static inline
673void ipoib_cm_dev_cleanup(struct net_device *dev)
674{
675 return;
676}
677
678static inline
679struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
680 struct ipoib_neigh *neigh)
681{
682 return NULL;
683}
684
685static inline
686void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
687{
688 return;
689}
690
691static inline
692int ipoib_cm_add_mode_attr(struct net_device *dev)
693{
694 return 0;
695}
696
697static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
698 unsigned int mtu)
699{
700 dev_kfree_skb_any(skb);
701}
702
703static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
704{
705}
706
707static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
708{
709}
710#endif
711
712#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
713void ipoib_create_debug_files(struct net_device *dev);
714void ipoib_delete_debug_files(struct net_device *dev);
715int ipoib_register_debugfs(void);
716void ipoib_unregister_debugfs(void);
717#else
718static inline void ipoib_create_debug_files(struct net_device *dev) { }
719static inline void ipoib_delete_debug_files(struct net_device *dev) { }
720static inline int ipoib_register_debugfs(void) { return 0; }
721static inline void ipoib_unregister_debugfs(void) { }
722#endif
723
724#define ipoib_printk(level, priv, format, arg...) \
725 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
726#define ipoib_warn(priv, format, arg...) \
727 ipoib_printk(KERN_WARNING, priv, format , ## arg)
728
729extern int ipoib_sendq_size;
730extern int ipoib_recvq_size;
731
732extern struct ib_sa_client ipoib_sa_client;
733
734#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
735extern int ipoib_debug_level;
736
737#define ipoib_dbg(priv, format, arg...) \
738 do { \
739 if (ipoib_debug_level > 0) \
740 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
741 } while (0)
742#define ipoib_dbg_mcast(priv, format, arg...) \
743 do { \
744 if (mcast_debug_level > 0) \
745 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
746 } while (0)
747#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
748#define ipoib_dbg(priv, format, arg...) \
749 do { (void) (priv); } while (0)
750#define ipoib_dbg_mcast(priv, format, arg...) \
751 do { (void) (priv); } while (0)
752#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
753
754#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
755#define ipoib_dbg_data(priv, format, arg...) \
756 do { \
757 if (data_debug_level > 0) \
758 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
759 } while (0)
760#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
761#define ipoib_dbg_data(priv, format, arg...) \
762 do { (void) (priv); } while (0)
763#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
764
765#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
766
767extern const char ipoib_driver_version[];
768
769#endif /* _IPOIB_H */