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, len: 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, len: 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 struct mutex mcast_mutex;
333
334 struct rb_root path_tree;
335 struct list_head path_list;
336
337 struct ipoib_neigh_table ntbl;
338
339 struct ipoib_mcast *broadcast;
340 struct list_head multicast_list;
341 struct rb_root multicast_tree;
342
343 struct workqueue_struct *wq;
344 struct delayed_work mcast_task;
345 struct work_struct carrier_on_task;
346 struct work_struct reschedule_napi_work;
347 struct work_struct flush_light;
348 struct work_struct flush_normal;
349 struct work_struct flush_heavy;
350 struct work_struct restart_task;
351 struct work_struct tx_timeout_work;
352 struct delayed_work ah_reap_task;
353 struct delayed_work neigh_reap_task;
354 struct ib_device *ca;
355 u8 port;
356 u16 pkey;
357 u16 pkey_index;
358 struct ib_pd *pd;
359 struct ib_cq *recv_cq;
360 struct ib_cq *send_cq;
361 struct ib_qp *qp;
362 u32 qkey;
363
364 union ib_gid local_gid;
365 u32 local_lid;
366
367 unsigned int admin_mtu;
368 unsigned int mcast_mtu;
369 unsigned int max_ib_mtu;
370
371 struct ipoib_rx_buf *rx_ring;
372
373 struct ipoib_tx_buf *tx_ring;
374 /* cyclic ring variables for managing tx_ring, for UD only */
375 unsigned int tx_head;
376 unsigned int tx_tail;
377 /* cyclic ring variables for counting overall outstanding send WRs */
378 unsigned int global_tx_head;
379 unsigned int global_tx_tail;
380 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
381 struct ib_ud_wr tx_wr;
382 struct ib_wc send_wc[MAX_SEND_CQE];
383
384 struct ib_recv_wr rx_wr;
385 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
386
387 struct ib_wc ibwc[IPOIB_NUM_WC];
388
389 struct list_head dead_ahs;
390
391 struct ib_event_handler event_handler;
392
393 struct net_device *parent;
394 /* 'child_intfs' and 'list' membership of all child devices are
395 * protected by the netdev instance lock of 'dev'.
396 */
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 u64 kernel_caps;
412 struct ipoib_ethtool_st ethtool;
413 unsigned int max_send_sge;
414 const struct net_device_ops *rn_ops;
415};
416
417struct 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
426struct 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
442struct 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 refcount_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
462void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
463static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
464{
465 if (refcount_dec_and_test(r: &neigh->refcnt))
466 ipoib_neigh_dtor(neigh);
467}
468struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
469struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
470 struct net_device *dev);
471void ipoib_neigh_free(struct ipoib_neigh *neigh);
472void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
473
474extern struct workqueue_struct *ipoib_workqueue;
475
476/* functions */
477
478int ipoib_rx_poll(struct napi_struct *napi, int budget);
479int ipoib_tx_poll(struct napi_struct *napi, int budget);
480void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr);
481void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr);
482
483struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
484 struct ib_pd *pd, struct rdma_ah_attr *attr);
485void ipoib_free_ah(struct kref *kref);
486static inline void ipoib_put_ah(struct ipoib_ah *ah)
487{
488 kref_put(kref: &ah->ref, release: ipoib_free_ah);
489}
490int ipoib_open(struct net_device *dev);
491void ipoib_intf_free(struct net_device *dev);
492int ipoib_add_pkey_attr(struct net_device *dev);
493int ipoib_add_umcast_attr(struct net_device *dev);
494
495int ipoib_send(struct net_device *dev, struct sk_buff *skb,
496 struct ib_ah *address, u32 dqpn);
497void ipoib_reap_ah(struct work_struct *work);
498
499void ipoib_napi_schedule_work(struct work_struct *work);
500struct ipoib_path *__path_find(struct net_device *dev, void *gid);
501void ipoib_mark_paths_invalid(struct net_device *dev);
502void ipoib_flush_paths(struct net_device *dev);
503struct net_device *ipoib_intf_alloc(struct ib_device *hca, u32 port,
504 const char *format);
505int ipoib_intf_init(struct ib_device *hca, u32 port, const char *format,
506 struct net_device *dev);
507void ipoib_ib_dev_flush_light(struct work_struct *work);
508void ipoib_ib_dev_flush_normal(struct work_struct *work);
509void ipoib_ib_dev_flush_heavy(struct work_struct *work);
510void ipoib_queue_work(struct ipoib_dev_priv *priv,
511 enum ipoib_flush_level level);
512void ipoib_ib_tx_timeout_work(struct work_struct *work);
513void ipoib_ib_dev_cleanup(struct net_device *dev);
514
515int ipoib_ib_dev_open_default(struct net_device *dev);
516int ipoib_ib_dev_open(struct net_device *dev);
517void ipoib_ib_dev_stop(struct net_device *dev);
518void ipoib_ib_dev_up(struct net_device *dev);
519void ipoib_ib_dev_down(struct net_device *dev);
520int ipoib_ib_dev_stop_default(struct net_device *dev);
521void ipoib_pkey_dev_check_presence(struct net_device *dev);
522
523void ipoib_mcast_join_task(struct work_struct *work);
524void ipoib_mcast_carrier_on_task(struct work_struct *work);
525void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
526
527void ipoib_mcast_restart_task(struct work_struct *work);
528void ipoib_mcast_start_thread(struct net_device *dev);
529void ipoib_mcast_stop_thread(struct net_device *dev);
530
531void ipoib_mcast_dev_flush(struct net_device *dev);
532
533int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
534void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
535 struct ipoib_tx_buf *tx_req);
536
537struct rtnl_link_ops *ipoib_get_link_ops(void);
538
539static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
540 struct ipoib_tx_buf *tx_req)
541{
542 int i, off;
543 struct sk_buff *skb = tx_req->skb;
544 skb_frag_t *frags = skb_shinfo(skb)->frags;
545 int nr_frags = skb_shinfo(skb)->nr_frags;
546 u64 *mapping = tx_req->mapping;
547
548 if (skb_headlen(skb)) {
549 priv->tx_sge[0].addr = mapping[0];
550 priv->tx_sge[0].length = skb_headlen(skb);
551 off = 1;
552 } else
553 off = 0;
554
555 for (i = 0; i < nr_frags; ++i) {
556 priv->tx_sge[i + off].addr = mapping[i + off];
557 priv->tx_sge[i + off].length = skb_frag_size(frag: &frags[i]);
558 }
559 priv->tx_wr.wr.num_sge = nr_frags + off;
560}
561
562#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
563struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
564int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
565void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
566 union ib_gid *gid,
567 unsigned long *created,
568 unsigned int *queuelen,
569 unsigned int *complete,
570 unsigned int *send_only);
571
572struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
573int ipoib_path_iter_next(struct ipoib_path_iter *iter);
574void ipoib_path_iter_read(struct ipoib_path_iter *iter,
575 struct ipoib_path *path);
576#endif
577
578int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
579 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
580int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
581 union ib_gid *mgid, u16 mlid);
582void ipoib_mcast_remove_list(struct list_head *remove_list);
583void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
584 struct list_head *remove_list);
585
586int ipoib_init_qp(struct net_device *dev);
587int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
588void ipoib_transport_dev_cleanup(struct net_device *dev);
589
590void ipoib_event(struct ib_event_handler *handler,
591 struct ib_event *record);
592
593int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
594int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
595
596int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
597 u16 pkey, int child_type);
598
599int __init ipoib_netlink_init(void);
600void __exit ipoib_netlink_fini(void);
601
602void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
603int ipoib_set_mode(struct net_device *dev, const char *buf);
604
605void ipoib_setup_common(struct net_device *dev);
606
607void ipoib_drain_cq(struct net_device *dev);
608
609void ipoib_set_ethtool_ops(struct net_device *dev);
610
611#define IPOIB_FLAGS_RC 0x80
612#define IPOIB_FLAGS_UC 0x40
613
614/* We don't support UC connections at the moment */
615#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
616
617#ifdef CONFIG_INFINIBAND_IPOIB_CM
618
619extern int ipoib_max_conn_qp;
620
621static inline int ipoib_cm_admin_enabled(struct net_device *dev)
622{
623 struct ipoib_dev_priv *priv = ipoib_priv(dev);
624 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
625 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
626}
627
628static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
629{
630 struct ipoib_dev_priv *priv = ipoib_priv(dev);
631 return IPOIB_CM_SUPPORTED(hwaddr) &&
632 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
633}
634
635static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
636
637{
638 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
639}
640
641static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
642{
643 return neigh->cm;
644}
645
646static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
647{
648 neigh->cm = tx;
649}
650
651static inline int ipoib_cm_has_srq(struct net_device *dev)
652{
653 struct ipoib_dev_priv *priv = ipoib_priv(dev);
654 return !!priv->cm.srq;
655}
656
657static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
658{
659 struct ipoib_dev_priv *priv = ipoib_priv(dev);
660 return priv->cm.max_cm_mtu;
661}
662
663void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
664int ipoib_cm_dev_open(struct net_device *dev);
665void ipoib_cm_dev_stop(struct net_device *dev);
666int ipoib_cm_dev_init(struct net_device *dev);
667int ipoib_cm_add_mode_attr(struct net_device *dev);
668void ipoib_cm_dev_cleanup(struct net_device *dev);
669struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
670 struct ipoib_neigh *neigh);
671void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
672void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
673 unsigned int mtu);
674void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
675void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
676#else
677
678#define ipoib_max_conn_qp 0
679
680static inline int ipoib_cm_admin_enabled(struct net_device *dev)
681{
682 return 0;
683}
684static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
685
686{
687 return 0;
688}
689
690static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
691
692{
693 return 0;
694}
695
696static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
697{
698 return NULL;
699}
700
701static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
702{
703}
704
705static inline int ipoib_cm_has_srq(struct net_device *dev)
706{
707 return 0;
708}
709
710static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
711{
712 return 0;
713}
714
715static inline
716void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
717{
718 return;
719}
720
721static inline
722int ipoib_cm_dev_open(struct net_device *dev)
723{
724 return 0;
725}
726
727static inline
728void ipoib_cm_dev_stop(struct net_device *dev)
729{
730 return;
731}
732
733static inline
734int ipoib_cm_dev_init(struct net_device *dev)
735{
736 return -EOPNOTSUPP;
737}
738
739static inline
740void ipoib_cm_dev_cleanup(struct net_device *dev)
741{
742 return;
743}
744
745static inline
746struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
747 struct ipoib_neigh *neigh)
748{
749 return NULL;
750}
751
752static inline
753void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
754{
755 return;
756}
757
758static inline
759int ipoib_cm_add_mode_attr(struct net_device *dev)
760{
761 return 0;
762}
763
764static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
765 unsigned int mtu)
766{
767 dev_kfree_skb_any(skb);
768}
769
770static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
771{
772}
773
774static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
775{
776}
777#endif
778
779#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
780void ipoib_create_debug_files(struct net_device *dev);
781void ipoib_delete_debug_files(struct net_device *dev);
782void ipoib_register_debugfs(void);
783void ipoib_unregister_debugfs(void);
784#else
785static inline void ipoib_create_debug_files(struct net_device *dev) { }
786static inline void ipoib_delete_debug_files(struct net_device *dev) { }
787static inline void ipoib_register_debugfs(void) { }
788static inline void ipoib_unregister_debugfs(void) { }
789#endif
790
791#define ipoib_printk(level, priv, format, arg...) \
792 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
793#define ipoib_warn(priv, format, arg...) \
794do { \
795 static DEFINE_RATELIMIT_STATE(_rs, \
796 10 * HZ /*10 seconds */, \
797 100); \
798 if (__ratelimit(&_rs)) \
799 ipoib_printk(KERN_WARNING, priv, format , ## arg);\
800} while (0)
801
802extern int ipoib_sendq_size;
803extern int ipoib_recvq_size;
804
805extern struct ib_sa_client ipoib_sa_client;
806
807#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
808extern int ipoib_debug_level;
809
810#define ipoib_dbg(priv, format, arg...) \
811 do { \
812 if (ipoib_debug_level > 0) \
813 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
814 } while (0)
815#define ipoib_dbg_mcast(priv, format, arg...) \
816 do { \
817 if (mcast_debug_level > 0) \
818 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
819 } while (0)
820#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
821#define ipoib_dbg(priv, format, arg...) \
822 do { (void) (priv); } while (0)
823#define ipoib_dbg_mcast(priv, format, arg...) \
824 do { (void) (priv); } while (0)
825#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
826
827#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
828#define ipoib_dbg_data(priv, format, arg...) \
829 do { \
830 if (data_debug_level > 0) \
831 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
832 } while (0)
833#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
834#define ipoib_dbg_data(priv, format, arg...) \
835 do { (void) (priv); } while (0)
836#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
837
838#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
839
840#endif /* _IPOIB_H */
841

source code of linux/drivers/infiniband/ulp/ipoib/ipoib.h