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