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