drivers/infiniband/ulp/ipoib/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  * $Id: ipoib.h 1358 2004-12-17 22:00:11Z roland $
  35  */
  36
  37 #ifndef _IPOIB_H
  38 #define _IPOIB_H
  39
  40 #include <linux/list.h>
  41 #include <linux/skbuff.h>
  42 #include <linux/netdevice.h>
  43 #include <linux/workqueue.h>
  44 #include <linux/kref.h>
  45 #include <linux/if_infiniband.h>
  46 #include <linux/mutex.h>
  47
  48 #include <net/neighbour.h>
  49
  50 #include <asm/atomic.h>
  51
  52 #include <rdma/ib_verbs.h>
  53 #include <rdma/ib_pack.h>
  54 #include <rdma/ib_sa.h>
  55
  56 /* constants */
  57
  58 enum {
  59         IPOIB_PACKET_SIZE         = 2048,
  60         IPOIB_BUF_SIZE            = IPOIB_PACKET_SIZE + IB_GRH_BYTES,
  61
  62         IPOIB_ENCAP_LEN           = 4,
  63
  64         IPOIB_CM_MTU              = 0x10000 - 0x10, /* padding to align header to 16 */
  65         IPOIB_CM_BUF_SIZE         = IPOIB_CM_MTU  + IPOIB_ENCAP_LEN,
  66         IPOIB_CM_HEAD_SIZE        = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
  67         IPOIB_CM_RX_SG            = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
  68         IPOIB_RX_RING_SIZE        = 128,
  69         IPOIB_TX_RING_SIZE        = 64,
  70         IPOIB_MAX_QUEUE_SIZE      = 8192,
  71         IPOIB_MIN_QUEUE_SIZE      = 2,
  72
  73         IPOIB_NUM_WC              = 4,
  74
  75         IPOIB_MAX_PATH_REC_QUEUE  = 3,
  76         IPOIB_MAX_MCAST_QUEUE     = 3,
  77
  78         IPOIB_FLAG_OPER_UP        = 0,
  79         IPOIB_FLAG_INITIALIZED    = 1,
  80         IPOIB_FLAG_ADMIN_UP       = 2,
  81         IPOIB_PKEY_ASSIGNED       = 3,
  82         IPOIB_PKEY_STOP           = 4,
  83         IPOIB_FLAG_SUBINTERFACE   = 5,
  84         IPOIB_MCAST_RUN           = 6,
  85         IPOIB_STOP_REAPER         = 7,
  86         IPOIB_MCAST_STARTED       = 8,
  87         IPOIB_FLAG_NETIF_STOPPED  = 9,
  88         IPOIB_FLAG_ADMIN_CM       = 10,
  89
  90         IPOIB_MAX_BACKOFF_SECONDS = 16,
  91
  92         IPOIB_MCAST_FLAG_FOUND    = 0,  /* used in set_multicast_list */
  93         IPOIB_MCAST_FLAG_SENDONLY = 1,
  94         IPOIB_MCAST_FLAG_BUSY     = 2,  /* joining or already joined */
  95         IPOIB_MCAST_FLAG_ATTACHED = 3,
  96 };
  97
  98 #define IPOIB_OP_RECV   (1ul << 31)
  99 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 100 #define IPOIB_CM_OP_SRQ (1ul << 30)
 101 #else
 102 #define IPOIB_CM_OP_SRQ (0)
 103 #endif
 104
 105 /* structs */
 106
 107 struct ipoib_header {
 108         __be16  proto;
 109         u16     reserved;
 110 };
 111
 112 struct ipoib_pseudoheader {
 113         u8  hwaddr[INFINIBAND_ALEN];
 114 };
 115
 116 struct ipoib_mcast;
 117
 118 struct ipoib_rx_buf {
 119         struct sk_buff *skb;
 120         u64             mapping;
 121 };
 122
 123 struct ipoib_tx_buf {
 124         struct sk_buff *skb;
 125         u64             mapping;
 126 };
 127
 128 struct ib_cm_id;
 129
 130 struct ipoib_cm_data {
 131         __be32 qpn; /* High byte MUST be ignored on receive */
 132         __be32 mtu;
 133 };
 134
 135 /*
 136  * Quoting 10.3.1 Queue Pair and EE Context States:
 137  *
 138  * Note, for QPs that are associated with an SRQ, the Consumer should take the
 139  * QP through the Error State before invoking a Destroy QP or a Modify QP to the
 140  * Reset State.  The Consumer may invoke the Destroy QP without first performing
 141  * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
 142  * Last WQE Reached Event. However, if the Consumer does not wait for the
 143  * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
 144  * leakage may occur. Therefore, it is good programming practice to tear down a
 145  * QP that is associated with an SRQ by using the following process:
 146  *
 147  * - Put the QP in the Error State
 148  * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
 149  * - either:
 150  *       drain the CQ by invoking the Poll CQ verb and either wait for CQ
 151  *       to be empty or the number of Poll CQ operations has exceeded
 152  *       CQ capacity size;
 153  * - or
 154  *       post another WR that completes on the same CQ and wait for this
 155  *       WR to return as a WC;
 156  * - and then invoke a Destroy QP or Reset QP.
 157  *
 158  * We use the second option and wait for a completion on the
 159  * rx_drain_qp before destroying QPs attached to our SRQ.
 160  */
 161
 162 enum ipoib_cm_state {
 163         IPOIB_CM_RX_LIVE,
 164         IPOIB_CM_RX_ERROR, /* Ignored by stale task */
 165         IPOIB_CM_RX_FLUSH  /* Last WQE Reached event observed */
 166 };
 167
 168 struct ipoib_cm_rx {
 169         struct ib_cm_id     *id;
 170         struct ib_qp        *qp;
 171         struct list_head     list;
 172         struct net_device   *dev;
 173         unsigned long        jiffies;
 174         enum ipoib_cm_state  state;
 175 };
 176
 177 struct ipoib_cm_tx {
 178         struct ib_cm_id     *id;
 179         struct ib_cq        *cq;
 180         struct ib_qp        *qp;
 181         struct list_head     list;
 182         struct net_device   *dev;
 183         struct ipoib_neigh  *neigh;
 184         struct ipoib_path   *path;
 185         struct ipoib_tx_buf *tx_ring;
 186         unsigned             tx_head;
 187         unsigned             tx_tail;
 188         unsigned long        flags;
 189         u32                  mtu;
 190         struct ib_wc         ibwc[IPOIB_NUM_WC];
 191 };
 192
 193 struct ipoib_cm_rx_buf {
 194         struct sk_buff *skb;
 195         u64 mapping[IPOIB_CM_RX_SG];
 196 };
 197
 198 struct ipoib_cm_dev_priv {
 199         struct ib_srq          *srq;
 200         struct ipoib_cm_rx_buf *srq_ring;
 201         struct ib_cm_id        *id;
 202         struct ib_qp           *rx_drain_qp;   /* generates WR described in 10.3.1 */
 203         struct list_head        passive_ids;   /* state: LIVE */
 204         struct list_head        rx_error_list; /* state: ERROR */
 205         struct list_head        rx_flush_list; /* state: FLUSH, drain not started */
 206         struct list_head        rx_drain_list; /* state: FLUSH, drain started */
 207         struct list_head        rx_reap_list;  /* state: FLUSH, drain done */
 208         struct work_struct      start_task;
 209         struct work_struct      reap_task;
 210         struct work_struct      skb_task;
 211         struct work_struct      rx_reap_task;
 212         struct delayed_work     stale_task;
 213         struct sk_buff_head     skb_queue;
 214         struct list_head        start_list;
 215         struct list_head        reap_list;
 216         struct ib_wc            ibwc[IPOIB_NUM_WC];
 217         struct ib_sge           rx_sge[IPOIB_CM_RX_SG];
 218         struct ib_recv_wr       rx_wr;
 219 };
 220
 221 /*
 222  * Device private locking: tx_lock protects members used in TX fast
 223  * path (and we use LLTX so upper layers don't do extra locking).
 224  * lock protects everything else.  lock nests inside of tx_lock (ie
 225  * tx_lock must be acquired first if needed).
 226  */
 227 struct ipoib_dev_priv {
 228         spinlock_t lock;
 229
 230         struct net_device *dev;
 231
 232         unsigned long flags;
 233
 234         struct mutex mcast_mutex;
 235         struct mutex vlan_mutex;
 236
 237         struct rb_root  path_tree;
 238         struct list_head path_list;
 239
 240         struct ipoib_mcast *broadcast;
 241         struct list_head multicast_list;
 242         struct rb_root multicast_tree;
 243
 244         struct delayed_work pkey_poll_task;
 245         struct delayed_work mcast_task;
 246         struct work_struct flush_task;
 247         struct work_struct restart_task;
 248         struct delayed_work ah_reap_task;
 249         struct work_struct pkey_event_task;
 250
 251         struct ib_device *ca;
 252         u8                port;
 253         u16               pkey;
 254         u16               pkey_index;
 255         struct ib_pd     *pd;
 256         struct ib_mr     *mr;
 257         struct ib_cq     *cq;
 258         struct ib_qp     *qp;
 259         u32               qkey;
 260
 261         union ib_gid local_gid;
 262         u16          local_lid;
 263
 264         unsigned int admin_mtu;
 265         unsigned int mcast_mtu;
 266
 267         struct ipoib_rx_buf *rx_ring;
 268
 269         spinlock_t           tx_lock;
 270         struct ipoib_tx_buf *tx_ring;
 271         unsigned             tx_head;
 272         unsigned             tx_tail;
 273         struct ib_sge        tx_sge;
 274         struct ib_send_wr    tx_wr;
 275
 276         struct ib_wc ibwc[IPOIB_NUM_WC];
 277
 278         struct list_head dead_ahs;
 279
 280         struct ib_event_handler event_handler;
 281
 282         struct net_device_stats stats;
 283
 284         struct net_device *parent;
 285         struct list_head child_intfs;
 286         struct list_head list;
 287
 288 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 289         struct ipoib_cm_dev_priv cm;
 290 #endif
 291
 292 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 293         struct list_head fs_list;
 294         struct dentry *mcg_dentry;
 295         struct dentry *path_dentry;
 296 #endif
 297 };
 298
 299 struct ipoib_ah {
 300         struct net_device *dev;
 301         struct ib_ah      *ah;
 302         struct list_head   list;
 303         struct kref        ref;
 304         unsigned           last_send;
 305 };
 306
 307 struct ipoib_path {
 308         struct net_device    *dev;
 309         struct ib_sa_path_rec pathrec;
 310         struct ipoib_ah      *ah;
 311         struct sk_buff_head   queue;
 312
 313         struct list_head      neigh_list;
 314
 315         int                   query_id;
 316         struct ib_sa_query   *query;
 317         struct completion     done;
 318
 319         struct rb_node        rb_node;
 320         struct list_head      list;
 321 };
 322
 323 struct ipoib_neigh {
 324         struct ipoib_ah    *ah;
 325 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 326         struct ipoib_cm_tx *cm;
 327 #endif
 328         union ib_gid        dgid;
 329         struct sk_buff_head queue;
 330
 331         struct neighbour   *neighbour;
 332
 333         struct list_head    list;
 334 };
 335
 336 /*
 337  * We stash a pointer to our private neighbour information after our
 338  * hardware address in neigh->ha.  The ALIGN() expression here makes
 339  * sure that this pointer is stored aligned so that an unaligned
 340  * load is not needed to dereference it.
 341  */
 342 static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
 343 {
 344         return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
 345                                      INFINIBAND_ALEN, sizeof(void *));
 346 }
 347
 348 struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh);
 349 void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh);
 350
 351 extern struct workqueue_struct *ipoib_workqueue;
 352
 353 /* functions */
 354
 355 int ipoib_poll(struct net_device *dev, int *budget);
 356 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
 357
 358 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 359                                  struct ib_pd *pd, struct ib_ah_attr *attr);
 360 void ipoib_free_ah(struct kref *kref);
 361 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 362 {
 363         kref_put(&ah->ref, ipoib_free_ah);
 364 }
 365
 366 int ipoib_open(struct net_device *dev);
 367 int ipoib_add_pkey_attr(struct net_device *dev);
 368
 369 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 370                 struct ipoib_ah *address, u32 qpn);
 371 void ipoib_reap_ah(struct work_struct *work);
 372
 373 void ipoib_flush_paths(struct net_device *dev);
 374 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
 375
 376 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 377 void ipoib_ib_dev_flush(struct work_struct *work);
 378 void ipoib_pkey_event(struct work_struct *work);
 379 void ipoib_ib_dev_cleanup(struct net_device *dev);
 380
 381 int ipoib_ib_dev_open(struct net_device *dev);
 382 int ipoib_ib_dev_up(struct net_device *dev);
 383 int ipoib_ib_dev_down(struct net_device *dev, int flush);
 384 int ipoib_ib_dev_stop(struct net_device *dev, int flush);
 385
 386 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 387 void ipoib_dev_cleanup(struct net_device *dev);
 388
 389 void ipoib_mcast_join_task(struct work_struct *work);
 390 void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb);
 391
 392 void ipoib_mcast_restart_task(struct work_struct *work);
 393 int ipoib_mcast_start_thread(struct net_device *dev);
 394 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
 395
 396 void ipoib_mcast_dev_down(struct net_device *dev);
 397 void ipoib_mcast_dev_flush(struct net_device *dev);
 398
 399 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 400 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 401 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 402 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 403                                   union ib_gid *gid,
 404                                   unsigned long *created,
 405                                   unsigned int *queuelen,
 406                                   unsigned int *complete,
 407                                   unsigned int *send_only);
 408
 409 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 410 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 411 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 412                           struct ipoib_path *path);
 413 #endif
 414
 415 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
 416                        union ib_gid *mgid);
 417 int ipoib_mcast_detach(struct net_device *dev, u16 mlid,
 418                        union ib_gid *mgid);
 419
 420 int ipoib_init_qp(struct net_device *dev);
 421 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 422 void ipoib_transport_dev_cleanup(struct net_device *dev);
 423
 424 void ipoib_event(struct ib_event_handler *handler,
 425                  struct ib_event *record);
 426
 427 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 428 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 429
 430 void ipoib_pkey_poll(struct work_struct *work);
 431 int ipoib_pkey_dev_delay_open(struct net_device *dev);
 432 void ipoib_drain_cq(struct net_device *dev);
 433
 434 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 435
 436 #define IPOIB_FLAGS_RC          0x80
 437 #define IPOIB_FLAGS_UC          0x40
 438
 439 /* We don't support UC connections at the moment */
 440 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 441
 442 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 443 {
 444         struct ipoib_dev_priv *priv = netdev_priv(dev);
 445         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 446                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 447 }
 448
 449 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
 450 {
 451         struct ipoib_dev_priv *priv = netdev_priv(dev);
 452         return IPOIB_CM_SUPPORTED(n->ha) &&
 453                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 454 }
 455
 456 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 457
 458 {
 459         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 460 }
 461
 462 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 463 {
 464         return neigh->cm;
 465 }
 466
 467 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 468 {
 469         neigh->cm = tx;
 470 }
 471
 472 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 473 int ipoib_cm_dev_open(struct net_device *dev);
 474 void ipoib_cm_dev_stop(struct net_device *dev);
 475 int ipoib_cm_dev_init(struct net_device *dev);
 476 int ipoib_cm_add_mode_attr(struct net_device *dev);
 477 void ipoib_cm_dev_cleanup(struct net_device *dev);
 478 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 479                                     struct ipoib_neigh *neigh);
 480 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 481 void ipoib_cm_skb_too_long(struct net_device* dev, struct sk_buff *skb,
 482                            unsigned int mtu);
 483 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 484 #else
 485
 486 struct ipoib_cm_tx;
 487
 488 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 489 {
 490         return 0;
 491 }
 492 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
 493
 494 {
 495         return 0;
 496 }
 497
 498 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 499
 500 {
 501         return 0;
 502 }
 503
 504 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 505 {
 506         return NULL;
 507 }
 508
 509 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 510 {
 511 }
 512
 513 static inline
 514 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 515 {
 516         return;
 517 }
 518
 519 static inline
 520 int ipoib_cm_dev_open(struct net_device *dev)
 521 {
 522         return 0;
 523 }
 524
 525 static inline
 526 void ipoib_cm_dev_stop(struct net_device *dev)
 527 {
 528         return;
 529 }
 530
 531 static inline
 532 int ipoib_cm_dev_init(struct net_device *dev)
 533 {
 534         return -ENOSYS;
 535 }
 536
 537 static inline
 538 void ipoib_cm_dev_cleanup(struct net_device *dev)
 539 {
 540         return;
 541 }
 542
 543 static inline
 544 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 545                                     struct ipoib_neigh *neigh)
 546 {
 547         return NULL;
 548 }
 549
 550 static inline
 551 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 552 {
 553         return;
 554 }
 555
 556 static inline
 557 int ipoib_cm_add_mode_attr(struct net_device *dev)
 558 {
 559         return 0;
 560 }
 561
 562 static inline void ipoib_cm_skb_too_long(struct net_device* dev, struct sk_buff *skb,
 563                                          unsigned int mtu)
 564 {
 565         dev_kfree_skb_any(skb);
 566 }
 567
 568 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 569 {
 570 }
 571
 572 #endif
 573
 574 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 575 void ipoib_create_debug_files(struct net_device *dev);
 576 void ipoib_delete_debug_files(struct net_device *dev);
 577 int ipoib_register_debugfs(void);
 578 void ipoib_unregister_debugfs(void);
 579 #else
 580 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 581 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 582 static inline int ipoib_register_debugfs(void) { return 0; }
 583 static inline void ipoib_unregister_debugfs(void) { }
 584 #endif
 585
 586
 587 #define ipoib_printk(level, priv, format, arg...)       \
 588         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 589 #define ipoib_warn(priv, format, arg...)                \
 590         ipoib_printk(KERN_WARNING, priv, format , ## arg)
 591
 592 extern int ipoib_sendq_size;
 593 extern int ipoib_recvq_size;
 594
 595 extern struct ib_sa_client ipoib_sa_client;
 596
 597 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 598 extern int ipoib_debug_level;
 599
 600 #define ipoib_dbg(priv, format, arg...)                 \
 601         do {                                            \
 602                 if (ipoib_debug_level > 0)                      \
 603                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 604         } while (0)
 605 #define ipoib_dbg_mcast(priv, format, arg...)           \
 606         do {                                            \
 607                 if (mcast_debug_level > 0)              \
 608                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 609         } while (0)
 610 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 611 #define ipoib_dbg(priv, format, arg...)                 \
 612         do { (void) (priv); } while (0)
 613 #define ipoib_dbg_mcast(priv, format, arg...)           \
 614         do { (void) (priv); } while (0)
 615 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 616
 617 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 618 #define ipoib_dbg_data(priv, format, arg...)            \
 619         do {                                            \
 620                 if (data_debug_level > 0)               \
 621                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 622         } while (0)
 623 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 624 #define ipoib_dbg_data(priv, format, arg...)            \
 625         do { (void) (priv); } while (0)
 626 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 627
 628
 629 #define IPOIB_GID_FMT           "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:" \
 630                                 "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x"
 631
 632 #define IPOIB_GID_RAW_ARG(gid)  ((u8 *)(gid))[0], \
 633                                 ((u8 *)(gid))[1], \
 634                                 ((u8 *)(gid))[2], \
 635                                 ((u8 *)(gid))[3], \
 636                                 ((u8 *)(gid))[4], \
 637                                 ((u8 *)(gid))[5], \
 638                                 ((u8 *)(gid))[6], \
 639                                 ((u8 *)(gid))[7], \
 640                                 ((u8 *)(gid))[8], \
 641                                 ((u8 *)(gid))[9], \
 642                                 ((u8 *)(gid))[10],\
 643                                 ((u8 *)(gid))[11],\
 644                                 ((u8 *)(gid))[12],\
 645                                 ((u8 *)(gid))[13],\
 646                                 ((u8 *)(gid))[14],\
 647                                 ((u8 *)(gid))[15]
 648
 649 #define IPOIB_GID_ARG(gid)      IPOIB_GID_RAW_ARG((gid).raw)
 650
 651 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 652
 653 #endif /* _IPOIB_H */