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 struct ipoib_cm_rx {
 136         struct ib_cm_id     *id;
 137         struct ib_qp        *qp;
 138         struct list_head     list;
 139         struct net_device   *dev;
 140         unsigned long        jiffies;
 141 };
 142
 143 struct ipoib_cm_tx {
 144         struct ib_cm_id     *id;
 145         struct ib_cq        *cq;
 146         struct ib_qp        *qp;
 147         struct list_head     list;
 148         struct net_device   *dev;
 149         struct ipoib_neigh  *neigh;
 150         struct ipoib_path   *path;
 151         struct ipoib_tx_buf *tx_ring;
 152         unsigned             tx_head;
 153         unsigned             tx_tail;
 154         unsigned long        flags;
 155         u32                  mtu;
 156         struct ib_wc         ibwc[IPOIB_NUM_WC];
 157 };
 158
 159 struct ipoib_cm_rx_buf {
 160         struct sk_buff *skb;
 161         u64 mapping[IPOIB_CM_RX_SG];
 162 };
 163
 164 struct ipoib_cm_dev_priv {
 165         struct ib_srq          *srq;
 166         struct ipoib_cm_rx_buf *srq_ring;
 167         struct ib_cm_id        *id;
 168         struct list_head        passive_ids;
 169         struct work_struct      start_task;
 170         struct work_struct      reap_task;
 171         struct work_struct      skb_task;
 172         struct delayed_work     stale_task;
 173         struct sk_buff_head     skb_queue;
 174         struct list_head        start_list;
 175         struct list_head        reap_list;
 176         struct ib_wc            ibwc[IPOIB_NUM_WC];
 177         struct ib_sge           rx_sge[IPOIB_CM_RX_SG];
 178         struct ib_recv_wr       rx_wr;
 179 };
 180
 181 /*
 182  * Device private locking: tx_lock protects members used in TX fast
 183  * path (and we use LLTX so upper layers don't do extra locking).
 184  * lock protects everything else.  lock nests inside of tx_lock (ie
 185  * tx_lock must be acquired first if needed).
 186  */
 187 struct ipoib_dev_priv {
 188         spinlock_t lock;
 189
 190         struct net_device *dev;
 191
 192         unsigned long flags;
 193
 194         struct mutex mcast_mutex;
 195         struct mutex vlan_mutex;
 196
 197         struct rb_root  path_tree;
 198         struct list_head path_list;
 199
 200         struct ipoib_mcast *broadcast;
 201         struct list_head multicast_list;
 202         struct rb_root multicast_tree;
 203
 204         struct delayed_work pkey_task;
 205         struct delayed_work mcast_task;
 206         struct work_struct flush_task;
 207         struct work_struct restart_task;
 208         struct delayed_work ah_reap_task;
 209
 210         struct ib_device *ca;
 211         u8                port;
 212         u16               pkey;
 213         struct ib_pd     *pd;
 214         struct ib_mr     *mr;
 215         struct ib_cq     *cq;
 216         struct ib_qp     *qp;
 217         u32               qkey;
 218
 219         union ib_gid local_gid;
 220         u16          local_lid;
 221
 222         unsigned int admin_mtu;
 223         unsigned int mcast_mtu;
 224
 225         struct ipoib_rx_buf *rx_ring;
 226
 227         spinlock_t           tx_lock;
 228         struct ipoib_tx_buf *tx_ring;
 229         unsigned             tx_head;
 230         unsigned             tx_tail;
 231         struct ib_sge        tx_sge;
 232         struct ib_send_wr    tx_wr;
 233
 234         struct ib_wc ibwc[IPOIB_NUM_WC];
 235
 236         struct list_head dead_ahs;
 237
 238         struct ib_event_handler event_handler;
 239
 240         struct net_device_stats stats;
 241
 242         struct net_device *parent;
 243         struct list_head child_intfs;
 244         struct list_head list;
 245
 246 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 247         struct ipoib_cm_dev_priv cm;
 248 #endif
 249
 250 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 251         struct list_head fs_list;
 252         struct dentry *mcg_dentry;
 253         struct dentry *path_dentry;
 254 #endif
 255 };
 256
 257 struct ipoib_ah {
 258         struct net_device *dev;
 259         struct ib_ah      *ah;
 260         struct list_head   list;
 261         struct kref        ref;
 262         unsigned           last_send;
 263 };
 264
 265 struct ipoib_path {
 266         struct net_device    *dev;
 267         struct ib_sa_path_rec pathrec;
 268         struct ipoib_ah      *ah;
 269         struct sk_buff_head   queue;
 270
 271         struct list_head      neigh_list;
 272
 273         int                   query_id;
 274         struct ib_sa_query   *query;
 275         struct completion     done;
 276
 277         struct rb_node        rb_node;
 278         struct list_head      list;
 279 };
 280
 281 struct ipoib_neigh {
 282         struct ipoib_ah    *ah;
 283 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 284         struct ipoib_cm_tx *cm;
 285 #endif
 286         union ib_gid        dgid;
 287         struct sk_buff_head queue;
 288
 289         struct neighbour   *neighbour;
 290
 291         struct list_head    list;
 292 };
 293
 294 /*
 295  * We stash a pointer to our private neighbour information after our
 296  * hardware address in neigh->ha.  The ALIGN() expression here makes
 297  * sure that this pointer is stored aligned so that an unaligned
 298  * load is not needed to dereference it.
 299  */
 300 static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
 301 {
 302         return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
 303                                      INFINIBAND_ALEN, sizeof(void *));
 304 }
 305
 306 struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh);
 307 void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh);
 308
 309 extern struct workqueue_struct *ipoib_workqueue;
 310
 311 /* functions */
 312
 313 int ipoib_poll(struct net_device *dev, int *budget);
 314 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
 315
 316 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 317                                  struct ib_pd *pd, struct ib_ah_attr *attr);
 318 void ipoib_free_ah(struct kref *kref);
 319 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 320 {
 321         kref_put(&ah->ref, ipoib_free_ah);
 322 }
 323
 324 int ipoib_open(struct net_device *dev);
 325 int ipoib_add_pkey_attr(struct net_device *dev);
 326
 327 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 328                 struct ipoib_ah *address, u32 qpn);
 329 void ipoib_reap_ah(struct work_struct *work);
 330
 331 void ipoib_flush_paths(struct net_device *dev);
 332 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
 333
 334 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 335 void ipoib_ib_dev_flush(struct work_struct *work);
 336 void ipoib_ib_dev_cleanup(struct net_device *dev);
 337
 338 int ipoib_ib_dev_open(struct net_device *dev);
 339 int ipoib_ib_dev_up(struct net_device *dev);
 340 int ipoib_ib_dev_down(struct net_device *dev, int flush);
 341 int ipoib_ib_dev_stop(struct net_device *dev);
 342
 343 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 344 void ipoib_dev_cleanup(struct net_device *dev);
 345
 346 void ipoib_mcast_join_task(struct work_struct *work);
 347 void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb);
 348
 349 void ipoib_mcast_restart_task(struct work_struct *work);
 350 int ipoib_mcast_start_thread(struct net_device *dev);
 351 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
 352
 353 void ipoib_mcast_dev_down(struct net_device *dev);
 354 void ipoib_mcast_dev_flush(struct net_device *dev);
 355
 356 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 357 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 358 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 359 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 360                                   union ib_gid *gid,
 361                                   unsigned long *created,
 362                                   unsigned int *queuelen,
 363                                   unsigned int *complete,
 364                                   unsigned int *send_only);
 365
 366 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 367 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 368 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 369                           struct ipoib_path *path);
 370 #endif
 371
 372 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
 373                        union ib_gid *mgid);
 374 int ipoib_mcast_detach(struct net_device *dev, u16 mlid,
 375                        union ib_gid *mgid);
 376
 377 int ipoib_init_qp(struct net_device *dev);
 378 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 379 void ipoib_transport_dev_cleanup(struct net_device *dev);
 380
 381 void ipoib_event(struct ib_event_handler *handler,
 382                  struct ib_event *record);
 383
 384 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 385 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 386
 387 void ipoib_pkey_poll(struct work_struct *work);
 388 int ipoib_pkey_dev_delay_open(struct net_device *dev);
 389
 390 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 391
 392 #define IPOIB_FLAGS_RC          0x80
 393 #define IPOIB_FLAGS_UC          0x40
 394
 395 /* We don't support UC connections at the moment */
 396 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 397
 398 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 399 {
 400         struct ipoib_dev_priv *priv = netdev_priv(dev);
 401         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 402                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 403 }
 404
 405 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
 406 {
 407         struct ipoib_dev_priv *priv = netdev_priv(dev);
 408         return IPOIB_CM_SUPPORTED(n->ha) &&
 409                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 410 }
 411
 412 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 413
 414 {
 415         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 416 }
 417
 418 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 419 {
 420         return neigh->cm;
 421 }
 422
 423 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 424 {
 425         neigh->cm = tx;
 426 }
 427
 428 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 429 int ipoib_cm_dev_open(struct net_device *dev);
 430 void ipoib_cm_dev_stop(struct net_device *dev);
 431 int ipoib_cm_dev_init(struct net_device *dev);
 432 int ipoib_cm_add_mode_attr(struct net_device *dev);
 433 void ipoib_cm_dev_cleanup(struct net_device *dev);
 434 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 435                                     struct ipoib_neigh *neigh);
 436 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 437 void ipoib_cm_skb_too_long(struct net_device* dev, struct sk_buff *skb,
 438                            unsigned int mtu);
 439 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 440 #else
 441
 442 struct ipoib_cm_tx;
 443
 444 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 445 {
 446         return 0;
 447 }
 448 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
 449
 450 {
 451         return 0;
 452 }
 453
 454 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 455
 456 {
 457         return 0;
 458 }
 459
 460 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 461 {
 462         return NULL;
 463 }
 464
 465 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 466 {
 467 }
 468
 469 static inline
 470 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 471 {
 472         return;
 473 }
 474
 475 static inline
 476 int ipoib_cm_dev_open(struct net_device *dev)
 477 {
 478         return 0;
 479 }
 480
 481 static inline
 482 void ipoib_cm_dev_stop(struct net_device *dev)
 483 {
 484         return;
 485 }
 486
 487 static inline
 488 int ipoib_cm_dev_init(struct net_device *dev)
 489 {
 490         return -ENOSYS;
 491 }
 492
 493 static inline
 494 void ipoib_cm_dev_cleanup(struct net_device *dev)
 495 {
 496         return;
 497 }
 498
 499 static inline
 500 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 501                                     struct ipoib_neigh *neigh)
 502 {
 503         return NULL;
 504 }
 505
 506 static inline
 507 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 508 {
 509         return;
 510 }
 511
 512 static inline
 513 int ipoib_cm_add_mode_attr(struct net_device *dev)
 514 {
 515         return 0;
 516 }
 517
 518 static inline void ipoib_cm_skb_too_long(struct net_device* dev, struct sk_buff *skb,
 519                                          unsigned int mtu)
 520 {
 521         dev_kfree_skb_any(skb);
 522 }
 523
 524 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 525 {
 526 }
 527
 528 #endif
 529
 530 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 531 void ipoib_create_debug_files(struct net_device *dev);
 532 void ipoib_delete_debug_files(struct net_device *dev);
 533 int ipoib_register_debugfs(void);
 534 void ipoib_unregister_debugfs(void);
 535 #else
 536 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 537 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 538 static inline int ipoib_register_debugfs(void) { return 0; }
 539 static inline void ipoib_unregister_debugfs(void) { }
 540 #endif
 541
 542
 543 #define ipoib_printk(level, priv, format, arg...)       \
 544         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 545 #define ipoib_warn(priv, format, arg...)                \
 546         ipoib_printk(KERN_WARNING, priv, format , ## arg)
 547
 548 extern int ipoib_sendq_size;
 549 extern int ipoib_recvq_size;
 550
 551 extern struct ib_sa_client ipoib_sa_client;
 552
 553 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 554 extern int ipoib_debug_level;
 555
 556 #define ipoib_dbg(priv, format, arg...)                 \
 557         do {                                            \
 558                 if (ipoib_debug_level > 0)                      \
 559                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 560         } while (0)
 561 #define ipoib_dbg_mcast(priv, format, arg...)           \
 562         do {                                            \
 563                 if (mcast_debug_level > 0)              \
 564                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 565         } while (0)
 566 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 567 #define ipoib_dbg(priv, format, arg...)                 \
 568         do { (void) (priv); } while (0)
 569 #define ipoib_dbg_mcast(priv, format, arg...)           \
 570         do { (void) (priv); } while (0)
 571 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 572
 573 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 574 #define ipoib_dbg_data(priv, format, arg...)            \
 575         do {                                            \
 576                 if (data_debug_level > 0)               \
 577                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 578         } while (0)
 579 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 580 #define ipoib_dbg_data(priv, format, arg...)            \
 581         do { (void) (priv); } while (0)
 582 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 583
 584
 585 #define IPOIB_GID_FMT           "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:" \
 586                                 "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x"
 587
 588 #define IPOIB_GID_RAW_ARG(gid)  ((u8 *)(gid))[0], \
 589                                 ((u8 *)(gid))[1], \
 590                                 ((u8 *)(gid))[2], \
 591                                 ((u8 *)(gid))[3], \
 592                                 ((u8 *)(gid))[4], \
 593                                 ((u8 *)(gid))[5], \
 594                                 ((u8 *)(gid))[6], \
 595                                 ((u8 *)(gid))[7], \
 596                                 ((u8 *)(gid))[8], \
 597                                 ((u8 *)(gid))[9], \
 598                                 ((u8 *)(gid))[10],\
 599                                 ((u8 *)(gid))[11],\
 600                                 ((u8 *)(gid))[12],\
 601                                 ((u8 *)(gid))[13],\
 602                                 ((u8 *)(gid))[14],\
 603                                 ((u8 *)(gid))[15]
 604
 605 #define IPOIB_GID_ARG(gid)      IPOIB_GID_RAW_ARG((gid).raw)
 606
 607 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 608
 609 #endif /* _IPOIB_H */