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IPoIB: Fix crash when path record fails after path flush
[mirror_ubuntu-artful-kernel.git] / drivers / infiniband / ulp / ipoib / ipoib.h
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
2a1d9b7f
RD		 3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
1da177e4
LT		 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.
1da177e4
LT		 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>
1da177e4
LT		 42#include <linux/kref.h>
43#include <linux/if_infiniband.h>
95ed644f 44#include <linux/mutex.h>
1da177e4
LT		 45
46#include <net/neighbour.h>
47
48#include <asm/atomic.h>
1da177e4 49
a4d61e84
RD		 50#include <rdma/ib_verbs.h>
51#include <rdma/ib_pack.h>
52#include <rdma/ib_sa.h>
af40da89 53#include <linux/inet_lro.h>
1da177e4
LT		 54
55/* constants */
56
ee1e2c82
MS		 57enum ipoib_flush_level {
58 IPOIB_FLUSH_LIGHT,
59 IPOIB_FLUSH_NORMAL,
60 IPOIB_FLUSH_HEAVY
61};
62
1da177e4 63enum {
2337f809 64 IPOIB_ENCAP_LEN = 4,
1da177e4 65
bc7b3a36
SM		 66 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
67 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */
68
2337f809
RD		 69 IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */
70 IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN,
71 IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
72 IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
bc3a290b
EC		 73 IPOIB_RX_RING_SIZE = 256,
74 IPOIB_TX_RING_SIZE = 128,
0f485251
SM		 75 IPOIB_MAX_QUEUE_SIZE = 8192,
76 IPOIB_MIN_QUEUE_SIZE = 2,
68e995a2 77 IPOIB_CM_MAX_CONN_QP = 4096,
1da177e4 78
2337f809 79 IPOIB_NUM_WC = 4,
1da177e4
LT		 80
81 IPOIB_MAX_PATH_REC_QUEUE = 3,
2337f809
RD		 82 IPOIB_MAX_MCAST_QUEUE = 3,
83
84 IPOIB_FLAG_OPER_UP = 0,
85 IPOIB_FLAG_INITIALIZED = 1,
86 IPOIB_FLAG_ADMIN_UP = 2,
87 IPOIB_PKEY_ASSIGNED = 3,
88 IPOIB_PKEY_STOP = 4,
89 IPOIB_FLAG_SUBINTERFACE = 5,
90 IPOIB_MCAST_RUN = 6,
91 IPOIB_STOP_REAPER = 7,
2337f809 92 IPOIB_FLAG_ADMIN_CM = 9,
1b524963 93 IPOIB_FLAG_UMCAST = 10,
6046136c 94 IPOIB_FLAG_CSUM = 11,
1da177e4
LT		 95
96 IPOIB_MAX_BACKOFF_SECONDS = 16,
97
2337f809 98 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
1da177e4 99 IPOIB_MCAST_FLAG_SENDONLY = 1,
2337f809 100 IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */
1da177e4 101 IPOIB_MCAST_FLAG_ATTACHED = 3,
f56bcd80 102
af40da89
VS		 103 IPOIB_MAX_LRO_DESCRIPTORS = 8,
104 IPOIB_LRO_MAX_AGGR = 64,
105
f56bcd80 106 MAX_SEND_CQE = 16,
f89271da 107 IPOIB_CM_COPYBREAK = 256,
1da177e4
LT		 108};
109
839fcaba
MT		 110#define IPOIB_OP_RECV (1ul << 31)
111#ifdef CONFIG_INFINIBAND_IPOIB_CM
1b524963 112#define IPOIB_OP_CM (1ul << 30)
839fcaba 113#else
1b524963 114#define IPOIB_OP_CM (0)
839fcaba
MT		 115#endif
116
1da177e4
LT		 117/* structs */
118
119struct ipoib_header {
97f52eb4
SH		 120 __be16 proto;
121 u16 reserved;
1da177e4
LT		 122};
123
124struct ipoib_pseudoheader {
125 u8 hwaddr[INFINIBAND_ALEN];
126};
127
81668838
SH		 128/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
129struct ipoib_mcast {
130 struct ib_sa_mcmember_rec mcmember;
131 struct ib_sa_multicast *mc;
2337f809 132 struct ipoib_ah *ah;
81668838
SH		 133
134 struct rb_node rb_node;
135 struct list_head list;
136
137 unsigned long created;
138 unsigned long backoff;
139
140 unsigned long flags;
141 unsigned char logcount;
142
143 struct list_head neigh_list;
144
145 struct sk_buff_head pkt_queue;
146
147 struct net_device *dev;
148};
1da177e4 149
1993d683
RD		 150struct ipoib_rx_buf {
151 struct sk_buff *skb;
bc7b3a36 152 u64 mapping[IPOIB_UD_RX_SG];
1993d683
RD		 153};
154
155struct ipoib_tx_buf {
1da177e4 156 struct sk_buff *skb;
7143740d 157 u64 mapping[MAX_SKB_FRAGS + 1];
1da177e4
LT		 158};
159
e112373f
EC		 160struct ipoib_cm_tx_buf {
161 struct sk_buff *skb;
162 u64 mapping;
163};
164
839fcaba
MT		 165struct ib_cm_id;
166
167struct ipoib_cm_data {
168 __be32 qpn; /* High byte MUST be ignored on receive */
169 __be32 mtu;
170};
171
518b1646
MT		 172/*
173 * Quoting 10.3.1 Queue Pair and EE Context States:
174 *
175 * Note, for QPs that are associated with an SRQ, the Consumer should take the
176 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
177 * Reset State. The Consumer may invoke the Destroy QP without first performing
178 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
179 * Last WQE Reached Event. However, if the Consumer does not wait for the
180 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
181 * leakage may occur. Therefore, it is good programming practice to tear down a
182 * QP that is associated with an SRQ by using the following process:
183 *
184 * - Put the QP in the Error State
185 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
186 * - either:
187 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
188 * to be empty or the number of Poll CQ operations has exceeded
189 * CQ capacity size;
190 * - or
191 * post another WR that completes on the same CQ and wait for this
192 * WR to return as a WC;
193 * - and then invoke a Destroy QP or Reset QP.
194 *
195 * We use the second option and wait for a completion on the
ec56dc0b 196 * same CQ before destroying QPs attached to our SRQ.
518b1646
MT		 197 */
198
199enum ipoib_cm_state {
200 IPOIB_CM_RX_LIVE,
201 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
202 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
203};
204
839fcaba 205struct ipoib_cm_rx {
2337f809
RD		 206 struct ib_cm_id *id;
207 struct ib_qp *qp;
68e995a2 208 struct ipoib_cm_rx_buf *rx_ring;
2337f809
RD		 209 struct list_head list;
210 struct net_device *dev;
211 unsigned long jiffies;
212 enum ipoib_cm_state state;
68e995a2 213 int recv_count;
839fcaba
MT		 214};
215
216struct ipoib_cm_tx {
2337f809
RD		 217 struct ib_cm_id *id;
218 struct ib_qp *qp;
839fcaba
MT		 219 struct list_head list;
220 struct net_device *dev;
221 struct ipoib_neigh *neigh;
222 struct ipoib_path *path;
e112373f 223 struct ipoib_cm_tx_buf *tx_ring;
2337f809
RD		 224 unsigned tx_head;
225 unsigned tx_tail;
226 unsigned long flags;
227 u32 mtu;
839fcaba
MT		 228};
229
230struct ipoib_cm_rx_buf {
231 struct sk_buff *skb;
232 u64 mapping[IPOIB_CM_RX_SG];
233};
234
235struct ipoib_cm_dev_priv {
2337f809 236 struct ib_srq *srq;
839fcaba 237 struct ipoib_cm_rx_buf *srq_ring;
2337f809
RD		 238 struct ib_cm_id *id;
239 struct list_head passive_ids; /* state: LIVE */
240 struct list_head rx_error_list; /* state: ERROR */
241 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
242 struct list_head rx_drain_list; /* state: FLUSH, drain started */
243 struct list_head rx_reap_list; /* state: FLUSH, drain done */
839fcaba
MT		 244 struct work_struct start_task;
245 struct work_struct reap_task;
246 struct work_struct skb_task;
518b1646 247 struct work_struct rx_reap_task;
839fcaba
MT		 248 struct delayed_work stale_task;
249 struct sk_buff_head skb_queue;
2337f809
RD		 250 struct list_head start_list;
251 struct list_head reap_list;
252 struct ib_wc ibwc[IPOIB_NUM_WC];
253 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
839fcaba 254 struct ib_recv_wr rx_wr;
68e995a2 255 int nonsrq_conn_qp;
586a6934
PS		 256 int max_cm_mtu;
257 int num_frags;
839fcaba
MT		 258};
259
28d52b3c
EC		 260struct ipoib_ethtool_st {
261 u16 coalesce_usecs;
262 u16 max_coalesced_frames;
263};
264
af40da89
VS		 265struct ipoib_lro {
266 struct net_lro_mgr lro_mgr;
267 struct net_lro_desc lro_desc[IPOIB_MAX_LRO_DESCRIPTORS];
268};
269
1da177e4
LT		 270/*
271 * Device private locking: tx_lock protects members used in TX fast
272 * path (and we use LLTX so upper layers don't do extra locking).
273 * lock protects everything else. lock nests inside of tx_lock (ie
274 * tx_lock must be acquired first if needed).
275 */
276struct ipoib_dev_priv {
277 spinlock_t lock;
278
279 struct net_device *dev;
280
bea3348e
SH		 281 struct napi_struct napi;
282
1da177e4
LT		 283 unsigned long flags;
284
95ed644f 285 struct mutex vlan_mutex;
1da177e4
LT		 286
287 struct rb_root path_tree;
288 struct list_head path_list;
289
290 struct ipoib_mcast *broadcast;
291 struct list_head multicast_list;
292 struct rb_root multicast_tree;
293
26bbf13c 294 struct delayed_work pkey_poll_task;
c4028958 295 struct delayed_work mcast_task;
e8224e4b 296 struct work_struct carrier_on_task;
ee1e2c82
MS		 297 struct work_struct flush_light;
298 struct work_struct flush_normal;
299 struct work_struct flush_heavy;
1da177e4 300 struct work_struct restart_task;
c4028958 301 struct delayed_work ah_reap_task;
1da177e4
LT		 302
303 struct ib_device *ca;
2337f809
RD		 304 u8 port;
305 u16 pkey;
306 u16 pkey_index;
307 struct ib_pd *pd;
308 struct ib_mr *mr;
f56bcd80
EC		 309 struct ib_cq *recv_cq;
310 struct ib_cq *send_cq;
2337f809
RD		 311 struct ib_qp *qp;
312 u32 qkey;
1da177e4
LT		 313
314 union ib_gid local_gid;
2337f809 315 u16 local_lid;
1da177e4
LT		 316
317 unsigned int admin_mtu;
318 unsigned int mcast_mtu;
bc7b3a36 319 unsigned int max_ib_mtu;
1da177e4 320
1993d683 321 struct ipoib_rx_buf *rx_ring;
1da177e4 322
2337f809 323 spinlock_t tx_lock;
1993d683 324 struct ipoib_tx_buf *tx_ring;
2337f809
RD		 325 unsigned tx_head;
326 unsigned tx_tail;
7143740d 327 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
1993d683 328 struct ib_send_wr tx_wr;
2337f809 329 unsigned tx_outstanding;
f56bcd80 330 struct ib_wc send_wc[MAX_SEND_CQE];
1da177e4 331
bc7b3a36
SM		 332 struct ib_recv_wr rx_wr;
333 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
334
1da177e4
LT		 335 struct ib_wc ibwc[IPOIB_NUM_WC];
336
337 struct list_head dead_ahs;
338
339 struct ib_event_handler event_handler;
340
1da177e4
LT		 341 struct net_device *parent;
342 struct list_head child_intfs;
343 struct list_head list;
344
839fcaba
MT		 345#ifdef CONFIG_INFINIBAND_IPOIB_CM
346 struct ipoib_cm_dev_priv cm;
347#endif
348
1da177e4
LT		 349#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
350 struct list_head fs_list;
351 struct dentry *mcg_dentry;
1732b0ef 352 struct dentry *path_dentry;
1da177e4 353#endif
40ca1988 354 int hca_caps;
28d52b3c 355 struct ipoib_ethtool_st ethtool;
57ce41d1 356 struct timer_list poll_timer;
af40da89
VS		 357
358 struct ipoib_lro lro;
1da177e4
LT		 359};
360
361struct ipoib_ah {
362 struct net_device *dev;
2337f809 363 struct ib_ah *ah;
1da177e4 364 struct list_head list;
2337f809
RD		 365 struct kref ref;
366 unsigned last_send;
1da177e4
LT		 367};
368
369struct ipoib_path {
370 struct net_device *dev;
371 struct ib_sa_path_rec pathrec;
372 struct ipoib_ah *ah;
373 struct sk_buff_head queue;
374
375 struct list_head neigh_list;
376
2337f809 377 int query_id;
1da177e4
LT		 378 struct ib_sa_query *query;
379 struct completion done;
380
2337f809 381 struct rb_node rb_node;
1da177e4 382 struct list_head list;
ee1e2c82 383 int valid;
1da177e4
LT		 384};
385
386struct ipoib_neigh {
387 struct ipoib_ah *ah;
839fcaba
MT		 388#ifdef CONFIG_INFINIBAND_IPOIB_CM
389 struct ipoib_cm_tx *cm;
390#endif
2337f809 391 union ib_gid dgid;
1da177e4
LT		 392 struct sk_buff_head queue;
393
394 struct neighbour *neighbour;
732a2170 395 struct net_device *dev;
1da177e4
LT		 396
397 struct list_head list;
398};
399
bc7b3a36
SM		 400#define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
401#define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
402
403static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
404{
405 return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
406}
407
44af79f9
MT		 408/*
409 * We stash a pointer to our private neighbour information after our
410 * hardware address in neigh->ha. The ALIGN() expression here makes
411 * sure that this pointer is stored aligned so that an unaligned
412 * load is not needed to dereference it.
413 */
1da177e4
LT		 414static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
415{
44af79f9
MT		 416 return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
417 INFINIBAND_ALEN, sizeof(void *));
1da177e4
LT		 418}
419
732a2170
MS		 420struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh,
421 struct net_device *dev);
2745b5b7 422void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh);
d2e0655e 423
1da177e4
LT		 424extern struct workqueue_struct *ipoib_workqueue;
425
426/* functions */
427
bea3348e 428int ipoib_poll(struct napi_struct *napi, int budget);
1da177e4 429void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
57ce41d1 430void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
1da177e4
LT		 431
432struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
433 struct ib_pd *pd, struct ib_ah_attr *attr);
434void ipoib_free_ah(struct kref *kref);
435static inline void ipoib_put_ah(struct ipoib_ah *ah)
436{
437 kref_put(&ah->ref, ipoib_free_ah);
438}
439
8ae5a8a2 440int ipoib_open(struct net_device *dev);
1da177e4 441int ipoib_add_pkey_attr(struct net_device *dev);
335a64a5 442int ipoib_add_umcast_attr(struct net_device *dev);
1da177e4
LT		 443
444void ipoib_send(struct net_device *dev, struct sk_buff *skb,
445 struct ipoib_ah *address, u32 qpn);
c4028958 446void ipoib_reap_ah(struct work_struct *work);
1da177e4 447
ee1e2c82 448void ipoib_mark_paths_invalid(struct net_device *dev);
1da177e4
LT		 449void ipoib_flush_paths(struct net_device *dev);
450struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
451
452int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
ee1e2c82
MS		 453void ipoib_ib_dev_flush_light(struct work_struct *work);
454void ipoib_ib_dev_flush_normal(struct work_struct *work);
455void ipoib_ib_dev_flush_heavy(struct work_struct *work);
26bbf13c 456void ipoib_pkey_event(struct work_struct *work);
1da177e4
LT		 457void ipoib_ib_dev_cleanup(struct net_device *dev);
458
459int ipoib_ib_dev_open(struct net_device *dev);
460int ipoib_ib_dev_up(struct net_device *dev);
0b3ea082 461int ipoib_ib_dev_down(struct net_device *dev, int flush);
26bbf13c 462int ipoib_ib_dev_stop(struct net_device *dev, int flush);
1da177e4
LT		 463
464int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
465void ipoib_dev_cleanup(struct net_device *dev);
466
c4028958 467void ipoib_mcast_join_task(struct work_struct *work);
e8224e4b 468void ipoib_mcast_carrier_on_task(struct work_struct *work);
37c22a77 469void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb);
1da177e4 470
c4028958 471void ipoib_mcast_restart_task(struct work_struct *work);
1da177e4 472int ipoib_mcast_start_thread(struct net_device *dev);
8d2cae06 473int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
1da177e4
LT		 474
475void ipoib_mcast_dev_down(struct net_device *dev);
476void ipoib_mcast_dev_flush(struct net_device *dev);
477
8ae5a8a2 478#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1da177e4 479struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
1da177e4
LT		 480int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
481void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
482 union ib_gid *gid,
483 unsigned long *created,
484 unsigned int *queuelen,
485 unsigned int *complete,
486 unsigned int *send_only);
1732b0ef
RD		 487
488struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
489int ipoib_path_iter_next(struct ipoib_path_iter *iter);
490void ipoib_path_iter_read(struct ipoib_path_iter *iter,
491 struct ipoib_path *path);
8ae5a8a2 492#endif
1da177e4
LT		 493
494int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
d0de1362 495 union ib_gid *mgid, int set_qkey);
1da177e4 496
5b6810e0 497int ipoib_init_qp(struct net_device *dev);
1da177e4
LT		 498int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
499void ipoib_transport_dev_cleanup(struct net_device *dev);
500
501void ipoib_event(struct ib_event_handler *handler,
502 struct ib_event *record);
503
504int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
505int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
506
c4028958 507void ipoib_pkey_poll(struct work_struct *work);
1da177e4 508int ipoib_pkey_dev_delay_open(struct net_device *dev);
2dfbfc37 509void ipoib_drain_cq(struct net_device *dev);
1da177e4 510
82c24c18
EC		 511void ipoib_set_ethtool_ops(struct net_device *dev);
512
839fcaba
MT		 513#ifdef CONFIG_INFINIBAND_IPOIB_CM
514
2337f809
RD		 515#define IPOIB_FLAGS_RC 0x80
516#define IPOIB_FLAGS_UC 0x40
839fcaba
MT		 517
518/* We don't support UC connections at the moment */
519#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
520
68e995a2
PS		 521extern int ipoib_max_conn_qp;
522
839fcaba
MT		 523static inline int ipoib_cm_admin_enabled(struct net_device *dev)
524{
525 struct ipoib_dev_priv *priv = netdev_priv(dev);
526 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
527 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
528}
529
530static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
531{
532 struct ipoib_dev_priv *priv = netdev_priv(dev);
533 return IPOIB_CM_SUPPORTED(n->ha) &&
534 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
535}
536
537static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
538
539{
540 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
541}
542
543static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
544{
545 return neigh->cm;
546}
547
548static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
549{
550 neigh->cm = tx;
551}
552
68e995a2
PS		 553static inline int ipoib_cm_has_srq(struct net_device *dev)
554{
555 struct ipoib_dev_priv *priv = netdev_priv(dev);
556 return !!priv->cm.srq;
557}
558
586a6934
PS		 559static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
560{
561 struct ipoib_dev_priv *priv = netdev_priv(dev);
562 return priv->cm.max_cm_mtu;
563}
564
839fcaba
MT		 565void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
566int ipoib_cm_dev_open(struct net_device *dev);
567void ipoib_cm_dev_stop(struct net_device *dev);
568int ipoib_cm_dev_init(struct net_device *dev);
569int ipoib_cm_add_mode_attr(struct net_device *dev);
570void ipoib_cm_dev_cleanup(struct net_device *dev);
571struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
572 struct ipoib_neigh *neigh);
573void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
2337f809 574void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 575 unsigned int mtu);
576void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
1b524963 577void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
839fcaba
MT		 578#else
579
580struct ipoib_cm_tx;
581
68e995a2
PS		 582#define ipoib_max_conn_qp 0
583
839fcaba
MT		 584static inline int ipoib_cm_admin_enabled(struct net_device *dev)
585{
586 return 0;
587}
588static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
589
590{
591 return 0;
592}
593
594static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
595
596{
597 return 0;
598}
599
600static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
601{
602 return NULL;
603}
604
605static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
606{
607}
608
68e995a2
PS		 609static inline int ipoib_cm_has_srq(struct net_device *dev)
610{
611 return 0;
612}
613
586a6934
PS		 614static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
615{
616 return 0;
617}
618
839fcaba
MT		 619static inline
620void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
621{
622 return;
623}
624
625static inline
626int ipoib_cm_dev_open(struct net_device *dev)
627{
628 return 0;
629}
630
631static inline
632void ipoib_cm_dev_stop(struct net_device *dev)
633{
634 return;
635}
636
637static inline
638int ipoib_cm_dev_init(struct net_device *dev)
639{
640 return -ENOSYS;
641}
642
643static inline
644void ipoib_cm_dev_cleanup(struct net_device *dev)
645{
646 return;
647}
648
649static inline
650struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
651 struct ipoib_neigh *neigh)
652{
653 return NULL;
654}
655
656static inline
657void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
658{
659 return;
660}
661
662static inline
663int ipoib_cm_add_mode_attr(struct net_device *dev)
664{
665 return 0;
666}
667
2337f809 668static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 669 unsigned int mtu)
670{
671 dev_kfree_skb_any(skb);
672}
673
674static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
675{
676}
677
1b524963
MT		 678static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
679{
680}
839fcaba
MT		 681#endif
682
1da177e4 683#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1732b0ef
RD		 684void ipoib_create_debug_files(struct net_device *dev);
685void ipoib_delete_debug_files(struct net_device *dev);
1da177e4
LT		 686int ipoib_register_debugfs(void);
687void ipoib_unregister_debugfs(void);
688#else
1732b0ef
RD		 689static inline void ipoib_create_debug_files(struct net_device *dev) { }
690static inline void ipoib_delete_debug_files(struct net_device *dev) { }
1da177e4
LT		 691static inline int ipoib_register_debugfs(void) { return 0; }
692static inline void ipoib_unregister_debugfs(void) { }
693#endif
694
1da177e4
LT		 695#define ipoib_printk(level, priv, format, arg...) \
696 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
697#define ipoib_warn(priv, format, arg...) \
698 ipoib_printk(KERN_WARNING, priv, format , ## arg)
699
0f485251
SM		 700extern int ipoib_sendq_size;
701extern int ipoib_recvq_size;
1da177e4 702
c1a0b23b
MT		 703extern struct ib_sa_client ipoib_sa_client;
704
1da177e4
LT		 705#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
706extern int ipoib_debug_level;
707
708#define ipoib_dbg(priv, format, arg...) \
2337f809 709 do { \
1da177e4
LT		 710 if (ipoib_debug_level > 0) \
711 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
712 } while (0)
713#define ipoib_dbg_mcast(priv, format, arg...) \
2337f809 714 do { \
1da177e4
LT		 715 if (mcast_debug_level > 0) \
716 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
717 } while (0)
718#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
719#define ipoib_dbg(priv, format, arg...) \
720 do { (void) (priv); } while (0)
721#define ipoib_dbg_mcast(priv, format, arg...) \
722 do { (void) (priv); } while (0)
723#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
724
725#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
726#define ipoib_dbg_data(priv, format, arg...) \
2337f809 727 do { \
1da177e4
LT		 728 if (data_debug_level > 0) \
729 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
730 } while (0)
731#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
732#define ipoib_dbg_data(priv, format, arg...) \
733 do { (void) (priv); } while (0)
734#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
735
736
37c22a77
JM		 737#define IPOIB_GID_FMT "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:" \
738 "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x"
739
740#define IPOIB_GID_RAW_ARG(gid) ((u8 *)(gid))[0], \
741 ((u8 *)(gid))[1], \
742 ((u8 *)(gid))[2], \
743 ((u8 *)(gid))[3], \
744 ((u8 *)(gid))[4], \
745 ((u8 *)(gid))[5], \
746 ((u8 *)(gid))[6], \
747 ((u8 *)(gid))[7], \
748 ((u8 *)(gid))[8], \
749 ((u8 *)(gid))[9], \
750 ((u8 *)(gid))[10],\
751 ((u8 *)(gid))[11],\
752 ((u8 *)(gid))[12],\
753 ((u8 *)(gid))[13],\
754 ((u8 *)(gid))[14],\
755 ((u8 *)(gid))[15]
756
757#define IPOIB_GID_ARG(gid) IPOIB_GID_RAW_ARG((gid).raw)
1da177e4 758
839fcaba
MT		 759#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
760
1da177e4 761#endif /* _IPOIB_H */
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