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/pci.h>
  45 #include <linux/kref.h>
  46 #include <linux/if_infiniband.h>
  47 #include <linux/mutex.h>
  48
  49 #include <net/neighbour.h>
  50
  51 #include <asm/atomic.h>
  52
  53 #include <rdma/ib_verbs.h>
  54 #include <rdma/ib_pack.h>
  55 #include <rdma/ib_sa.h>
  56
  57 /* constants */
  58
  59 enum {
  60         IPOIB_PACKET_SIZE         = 2048,
  61         IPOIB_BUF_SIZE            = IPOIB_PACKET_SIZE + IB_GRH_BYTES,
  62
  63         IPOIB_ENCAP_LEN           = 4,
  64
  65         IPOIB_CM_MTU              = 0x10000 - 0x10, /* padding to align header to 16 */
  66         IPOIB_CM_BUF_SIZE         = IPOIB_CM_MTU  + IPOIB_ENCAP_LEN,
  67         IPOIB_CM_HEAD_SIZE        = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
  68         IPOIB_CM_RX_SG            = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
  69         IPOIB_RX_RING_SIZE        = 128,
  70         IPOIB_TX_RING_SIZE        = 64,
  71         IPOIB_MAX_QUEUE_SIZE      = 8192,
  72         IPOIB_MIN_QUEUE_SIZE      = 2,
  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_NETIF_STOPPED  = 9,
  89         IPOIB_FLAG_ADMIN_CM       = 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_CM_OP_SRQ (1ul << 30)
 102 #else
 103 #define IPOIB_CM_OP_SRQ (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 struct ipoib_mcast;
 118
 119 struct ipoib_rx_buf {
 120         struct sk_buff *skb;
 121         u64             mapping;
 122 };
 123
 124 struct ipoib_tx_buf {
 125         struct sk_buff *skb;
 126         u64             mapping;
 127 };
 128
 129 struct ib_cm_id;
 130
 131 struct ipoib_cm_data {
 132         __be32 qpn; /* High byte MUST be ignored on receive */
 133         __be32 mtu;
 134 };
 135
 136 struct ipoib_cm_rx {
 137         struct ib_cm_id     *id;
 138         struct ib_qp        *qp;
 139         struct list_head     list;
 140         struct net_device   *dev;
 141         unsigned long        jiffies;
 142 };
 143
 144 struct ipoib_cm_tx {
 145         struct ib_cm_id     *id;
 146         struct ib_cq        *cq;
 147         struct ib_qp        *qp;
 148         struct list_head     list;
 149         struct net_device   *dev;
 150         struct ipoib_neigh  *neigh;
 151         struct ipoib_path   *path;
 152         struct ipoib_tx_buf *tx_ring;
 153         unsigned             tx_head;
 154         unsigned             tx_tail;
 155         unsigned long        flags;
 156         u32                  mtu;
 157         struct ib_wc         ibwc[IPOIB_NUM_WC];
 158 };
 159
 160 struct ipoib_cm_rx_buf {
 161         struct sk_buff *skb;
 162         u64 mapping[IPOIB_CM_RX_SG];
 163 };
 164
 165 struct ipoib_cm_dev_priv {
 166         struct ib_srq          *srq;
 167         struct ipoib_cm_rx_buf *srq_ring;
 168         struct ib_cm_id        *id;
 169         struct list_head        passive_ids;
 170         struct work_struct      start_task;
 171         struct work_struct      reap_task;
 172         struct work_struct      skb_task;
 173         struct delayed_work     stale_task;
 174         struct sk_buff_head     skb_queue;
 175         struct list_head        start_list;
 176         struct list_head        reap_list;
 177         struct ib_wc            ibwc[IPOIB_NUM_WC];
 178         struct ib_sge           rx_sge[IPOIB_CM_RX_SG];
 179         struct ib_recv_wr       rx_wr;
 180 };
 181
 182 /*
 183  * Device private locking: tx_lock protects members used in TX fast
 184  * path (and we use LLTX so upper layers don't do extra locking).
 185  * lock protects everything else.  lock nests inside of tx_lock (ie
 186  * tx_lock must be acquired first if needed).
 187  */
 188 struct ipoib_dev_priv {
 189         spinlock_t lock;
 190
 191         struct net_device *dev;
 192
 193         unsigned long flags;
 194
 195         struct mutex mcast_mutex;
 196         struct mutex vlan_mutex;
 197
 198         struct rb_root  path_tree;
 199         struct list_head path_list;
 200
 201         struct ipoib_mcast *broadcast;
 202         struct list_head multicast_list;
 203         struct rb_root multicast_tree;
 204
 205         struct delayed_work pkey_task;
 206         struct delayed_work mcast_task;
 207         struct work_struct flush_task;
 208         struct work_struct restart_task;
 209         struct delayed_work ah_reap_task;
 210
 211         struct ib_device *ca;
 212         u8                port;
 213         u16               pkey;
 214         struct ib_pd     *pd;
 215         struct ib_mr     *mr;
 216         struct ib_cq     *cq;
 217         struct ib_qp     *qp;
 218         u32               qkey;
 219
 220         union ib_gid local_gid;
 221         u16          local_lid;
 222         u8           local_rate;
 223
 224         unsigned int admin_mtu;
 225         unsigned int mcast_mtu;
 226
 227         struct ipoib_rx_buf *rx_ring;
 228
 229         spinlock_t           tx_lock;
 230         struct ipoib_tx_buf *tx_ring;
 231         unsigned             tx_head;
 232         unsigned             tx_tail;
 233         struct ib_sge        tx_sge;
 234         struct ib_send_wr    tx_wr;
 235
 236         struct ib_wc ibwc[IPOIB_NUM_WC];
 237
 238         struct list_head dead_ahs;
 239
 240         struct ib_event_handler event_handler;
 241
 242         struct net_device_stats stats;
 243
 244         struct net_device *parent;
 245         struct list_head child_intfs;
 246         struct list_head list;
 247
 248 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 249         struct ipoib_cm_dev_priv cm;
 250 #endif
 251
 252 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 253         struct list_head fs_list;
 254         struct dentry *mcg_dentry;
 255         struct dentry *path_dentry;
 256 #endif
 257 };
 258
 259 struct ipoib_ah {
 260         struct net_device *dev;
 261         struct ib_ah      *ah;
 262         struct list_head   list;
 263         struct kref        ref;
 264         unsigned           last_send;
 265 };
 266
 267 struct ipoib_path {
 268         struct net_device    *dev;
 269         struct ib_sa_path_rec pathrec;
 270         struct ipoib_ah      *ah;
 271         struct sk_buff_head   queue;
 272
 273         struct list_head      neigh_list;
 274
 275         int                   query_id;
 276         struct ib_sa_query   *query;
 277         struct completion     done;
 278
 279         struct rb_node        rb_node;
 280         struct list_head      list;
 281 };
 282
 283 struct ipoib_neigh {
 284         struct ipoib_ah    *ah;
 285 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 286         struct ipoib_cm_tx *cm;
 287 #endif
 288         union ib_gid        dgid;
 289         struct sk_buff_head queue;
 290
 291         struct neighbour   *neighbour;
 292
 293         struct list_head    list;
 294 };
 295
 296 /*
 297  * We stash a pointer to our private neighbour information after our
 298  * hardware address in neigh->ha.  The ALIGN() expression here makes
 299  * sure that this pointer is stored aligned so that an unaligned
 300  * load is not needed to dereference it.
 301  */
 302 static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
 303 {
 304         return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
 305                                      INFINIBAND_ALEN, sizeof(void *));
 306 }
 307
 308 struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh);
 309 void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh);
 310
 311 extern struct workqueue_struct *ipoib_workqueue;
 312
 313 /* functions */
 314
 315 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
 316
 317 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 318                                  struct ib_pd *pd, struct ib_ah_attr *attr);
 319 void ipoib_free_ah(struct kref *kref);
 320 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 321 {
 322         kref_put(&ah->ref, ipoib_free_ah);
 323 }
 324
 325 int ipoib_open(struct net_device *dev);
 326 int ipoib_add_pkey_attr(struct net_device *dev);
 327
 328 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 329                 struct ipoib_ah *address, u32 qpn);
 330 void ipoib_reap_ah(struct work_struct *work);
 331
 332 void ipoib_flush_paths(struct net_device *dev);
 333 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
 334
 335 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 336 void ipoib_ib_dev_flush(struct work_struct *work);
 337 void ipoib_ib_dev_cleanup(struct net_device *dev);
 338
 339 int ipoib_ib_dev_open(struct net_device *dev);
 340 int ipoib_ib_dev_up(struct net_device *dev);
 341 int ipoib_ib_dev_down(struct net_device *dev, int flush);
 342 int ipoib_ib_dev_stop(struct net_device *dev);
 343
 344 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 345 void ipoib_dev_cleanup(struct net_device *dev);
 346
 347 void ipoib_mcast_join_task(struct work_struct *work);
 348 void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb);
 349
 350 void ipoib_mcast_restart_task(struct work_struct *work);
 351 int ipoib_mcast_start_thread(struct net_device *dev);
 352 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
 353
 354 void ipoib_mcast_dev_down(struct net_device *dev);
 355 void ipoib_mcast_dev_flush(struct net_device *dev);
 356
 357 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 358 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 359 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 360 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 361                                   union ib_gid *gid,
 362                                   unsigned long *created,
 363                                   unsigned int *queuelen,
 364                                   unsigned int *complete,
 365                                   unsigned int *send_only);
 366
 367 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 368 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 369 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 370                           struct ipoib_path *path);
 371 #endif
 372
 373 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
 374                        union ib_gid *mgid);
 375 int ipoib_mcast_detach(struct net_device *dev, u16 mlid,
 376                        union ib_gid *mgid);
 377
 378 int ipoib_init_qp(struct net_device *dev);
 379 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 380 void ipoib_transport_dev_cleanup(struct net_device *dev);
 381
 382 void ipoib_event(struct ib_event_handler *handler,
 383                  struct ib_event *record);
 384
 385 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 386 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 387
 388 void ipoib_pkey_poll(struct work_struct *work);
 389 int ipoib_pkey_dev_delay_open(struct net_device *dev);
 390
 391 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 392
 393 #define IPOIB_FLAGS_RC          0x80
 394 #define IPOIB_FLAGS_UC          0x40
 395
 396 /* We don't support UC connections at the moment */
 397 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 398
 399 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 400 {
 401         struct ipoib_dev_priv *priv = netdev_priv(dev);
 402         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 403                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 404 }
 405
 406 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
 407 {
 408         struct ipoib_dev_priv *priv = netdev_priv(dev);
 409         return IPOIB_CM_SUPPORTED(n->ha) &&
 410                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 411 }
 412
 413 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 414
 415 {
 416         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 417 }
 418
 419 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 420 {
 421         return neigh->cm;
 422 }
 423
 424 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 425 {
 426         neigh->cm = tx;
 427 }
 428
 429 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 430 int ipoib_cm_dev_open(struct net_device *dev);
 431 void ipoib_cm_dev_stop(struct net_device *dev);
 432 int ipoib_cm_dev_init(struct net_device *dev);
 433 int ipoib_cm_add_mode_attr(struct net_device *dev);
 434 void ipoib_cm_dev_cleanup(struct net_device *dev);
 435 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 436                                     struct ipoib_neigh *neigh);
 437 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 438 void ipoib_cm_skb_too_long(struct net_device* dev, struct sk_buff *skb,
 439                            unsigned int mtu);
 440 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 441 #else
 442
 443 struct ipoib_cm_tx;
 444
 445 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 446 {
 447         return 0;
 448 }
 449 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
 450
 451 {
 452         return 0;
 453 }
 454
 455 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 456
 457 {
 458         return 0;
 459 }
 460
 461 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 462 {
 463         return NULL;
 464 }
 465
 466 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 467 {
 468 }
 469
 470 static inline
 471 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 472 {
 473         return;
 474 }
 475
 476 static inline
 477 int ipoib_cm_dev_open(struct net_device *dev)
 478 {
 479         return 0;
 480 }
 481
 482 static inline
 483 void ipoib_cm_dev_stop(struct net_device *dev)
 484 {
 485         return;
 486 }
 487
 488 static inline
 489 int ipoib_cm_dev_init(struct net_device *dev)
 490 {
 491         return -ENOSYS;
 492 }
 493
 494 static inline
 495 void ipoib_cm_dev_cleanup(struct net_device *dev)
 496 {
 497         return;
 498 }
 499
 500 static inline
 501 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 502                                     struct ipoib_neigh *neigh)
 503 {
 504         return NULL;
 505 }
 506
 507 static inline
 508 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 509 {
 510         return;
 511 }
 512
 513 static inline
 514 int ipoib_cm_add_mode_attr(struct net_device *dev)
 515 {
 516         return 0;
 517 }
 518
 519 static inline void ipoib_cm_skb_too_long(struct net_device* dev, struct sk_buff *skb,
 520                                          unsigned int mtu)
 521 {
 522         dev_kfree_skb_any(skb);
 523 }
 524
 525 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 526 {
 527 }
 528
 529 #endif
 530
 531 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 532 void ipoib_create_debug_files(struct net_device *dev);
 533 void ipoib_delete_debug_files(struct net_device *dev);
 534 int ipoib_register_debugfs(void);
 535 void ipoib_unregister_debugfs(void);
 536 #else
 537 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 538 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 539 static inline int ipoib_register_debugfs(void) { return 0; }
 540 static inline void ipoib_unregister_debugfs(void) { }
 541 #endif
 542
 543
 544 #define ipoib_printk(level, priv, format, arg...)       \
 545         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 546 #define ipoib_warn(priv, format, arg...)                \
 547         ipoib_printk(KERN_WARNING, priv, format , ## arg)
 548
 549 extern int ipoib_sendq_size;
 550 extern int ipoib_recvq_size;
 551
 552 extern struct ib_sa_client ipoib_sa_client;
 553
 554 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 555 extern int ipoib_debug_level;
 556
 557 #define ipoib_dbg(priv, format, arg...)                 \
 558         do {                                            \
 559                 if (ipoib_debug_level > 0)                      \
 560                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 561         } while (0)
 562 #define ipoib_dbg_mcast(priv, format, arg...)           \
 563         do {                                            \
 564                 if (mcast_debug_level > 0)              \
 565                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 566         } while (0)
 567 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 568 #define ipoib_dbg(priv, format, arg...)                 \
 569         do { (void) (priv); } while (0)
 570 #define ipoib_dbg_mcast(priv, format, arg...)           \
 571         do { (void) (priv); } while (0)
 572 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 573
 574 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 575 #define ipoib_dbg_data(priv, format, arg...)            \
 576         do {                                            \
 577                 if (data_debug_level > 0)               \
 578                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 579         } while (0)
 580 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 581 #define ipoib_dbg_data(priv, format, arg...)            \
 582         do { (void) (priv); } while (0)
 583 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 584
 585
 586 #define IPOIB_GID_FMT           "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:" \
 587                                 "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x"
 588
 589 #define IPOIB_GID_RAW_ARG(gid)  ((u8 *)(gid))[0], \
 590                                 ((u8 *)(gid))[1], \
 591                                 ((u8 *)(gid))[2], \
 592                                 ((u8 *)(gid))[3], \
 593                                 ((u8 *)(gid))[4], \
 594                                 ((u8 *)(gid))[5], \
 595                                 ((u8 *)(gid))[6], \
 596                                 ((u8 *)(gid))[7], \
 597                                 ((u8 *)(gid))[8], \
 598                                 ((u8 *)(gid))[9], \
 599                                 ((u8 *)(gid))[10],\
 600                                 ((u8 *)(gid))[11],\
 601                                 ((u8 *)(gid))[12],\
 602                                 ((u8 *)(gid))[13],\
 603                                 ((u8 *)(gid))[14],\
 604                                 ((u8 *)(gid))[15]
 605
 606 #define IPOIB_GID_ARG(gid)      IPOIB_GID_RAW_ARG((gid).raw)
 607
 608 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 609
 610 #endif /* _IPOIB_H */