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,v 1.1.1.1 2007/08/03 18:52:32 Exp $ 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 58enum { 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 107struct ipoib_header { 108 __be16 proto; 109 u16 reserved; 110}; 111 112struct ipoib_pseudoheader { 113 u8 hwaddr[INFINIBAND_ALEN]; 114}; 115 116struct ipoib_mcast; 117 118struct ipoib_rx_buf { 119 struct sk_buff *skb; 120 u64 mapping; 121}; 122 123struct ipoib_tx_buf { 124 struct sk_buff *skb; 125 u64 mapping; 126}; 127 128struct ib_cm_id; 129 130struct ipoib_cm_data { 131 __be32 qpn; /* High byte MUST be ignored on receive */ 132 __be32 mtu; 133}; 134 135/* 136 * Quoting 10.3.1 Queue Pair and EE Context States: 137 * 138 * Note, for QPs that are associated with an SRQ, the Consumer should take the 139 * QP through the Error State before invoking a Destroy QP or a Modify QP to the 140 * Reset State. The Consumer may invoke the Destroy QP without first performing 141 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous 142 * Last WQE Reached Event. However, if the Consumer does not wait for the 143 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment 144 * leakage may occur. Therefore, it is good programming practice to tear down a 145 * QP that is associated with an SRQ by using the following process: 146 * 147 * - Put the QP in the Error State 148 * - Wait for the Affiliated Asynchronous Last WQE Reached Event; 149 * - either: 150 * drain the CQ by invoking the Poll CQ verb and either wait for CQ 151 * to be empty or the number of Poll CQ operations has exceeded 152 * CQ capacity size; 153 * - or 154 * post another WR that completes on the same CQ and wait for this 155 * WR to return as a WC; 156 * - and then invoke a Destroy QP or Reset QP. 157 * 158 * We use the second option and wait for a completion on the 159 * same CQ before destroying QPs attached to our SRQ. 160 */ 161 162enum ipoib_cm_state { 163 IPOIB_CM_RX_LIVE, 164 IPOIB_CM_RX_ERROR, /* Ignored by stale task */ 165 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */ 166}; 167 168struct ipoib_cm_rx { 169 struct ib_cm_id *id; 170 struct ib_qp *qp; 171 struct list_head list; 172 struct net_device *dev; 173 unsigned long jiffies; 174 enum ipoib_cm_state state; 175}; 176 177struct ipoib_cm_tx { 178 struct ib_cm_id *id; 179 struct ib_cq *cq; 180 struct ib_qp *qp; 181 struct list_head list; 182 struct net_device *dev; 183 struct ipoib_neigh *neigh; 184 struct ipoib_path *path; 185 struct ipoib_tx_buf *tx_ring; 186 unsigned tx_head; 187 unsigned tx_tail; 188 unsigned long flags; 189 u32 mtu; 190 struct ib_wc ibwc[IPOIB_NUM_WC]; 191}; 192 193struct ipoib_cm_rx_buf { 194 struct sk_buff *skb; 195 u64 mapping[IPOIB_CM_RX_SG]; 196}; 197 198struct ipoib_cm_dev_priv { 199 struct ib_srq *srq; 200 struct ipoib_cm_rx_buf *srq_ring; 201 struct ib_cm_id *id; 202 struct list_head passive_ids; /* state: LIVE */ 203 struct list_head rx_error_list; /* state: ERROR */ 204 struct list_head rx_flush_list; /* state: FLUSH, drain not started */ 205 struct list_head rx_drain_list; /* state: FLUSH, drain started */ 206 struct list_head rx_reap_list; /* state: FLUSH, drain done */ 207 struct work_struct start_task; 208 struct work_struct reap_task; 209 struct work_struct skb_task; 210 struct work_struct rx_reap_task; 211 struct delayed_work stale_task; 212 struct sk_buff_head skb_queue; 213 struct list_head start_list; 214 struct list_head reap_list; 215 struct ib_wc ibwc[IPOIB_NUM_WC]; 216 struct ib_sge rx_sge[IPOIB_CM_RX_SG]; 217 struct ib_recv_wr rx_wr; 218}; 219 220/* 221 * Device private locking: tx_lock protects members used in TX fast 222 * path (and we use LLTX so upper layers don't do extra locking). 223 * lock protects everything else. lock nests inside of tx_lock (ie 224 * tx_lock must be acquired first if needed). 225 */ 226struct ipoib_dev_priv { 227 spinlock_t lock; 228 229 struct net_device *dev; 230 231 unsigned long flags; 232 233 struct mutex mcast_mutex; 234 struct mutex vlan_mutex; 235 236 struct rb_root path_tree; 237 struct list_head path_list; 238 239 struct ipoib_mcast *broadcast; 240 struct list_head multicast_list; 241 struct rb_root multicast_tree; 242 243 struct delayed_work pkey_poll_task; 244 struct delayed_work mcast_task; 245 struct work_struct flush_task; 246 struct work_struct restart_task; 247 struct delayed_work ah_reap_task; 248 struct work_struct pkey_event_task; 249 250 struct ib_device *ca; 251 u8 port; 252 u16 pkey; 253 u16 pkey_index; 254 struct ib_pd *pd; 255 struct ib_mr *mr; 256 struct ib_cq *cq; 257 struct ib_qp *qp; 258 u32 qkey; 259 260 union ib_gid local_gid; 261 u16 local_lid; 262 263 unsigned int admin_mtu; 264 unsigned int mcast_mtu; 265 266 struct ipoib_rx_buf *rx_ring; 267 268 spinlock_t tx_lock; 269 struct ipoib_tx_buf *tx_ring; 270 unsigned tx_head; 271 unsigned tx_tail; 272 struct ib_sge tx_sge; 273 struct ib_send_wr tx_wr; 274 275 struct ib_wc ibwc[IPOIB_NUM_WC]; 276 277 struct list_head dead_ahs; 278 279 struct ib_event_handler event_handler; 280 281 struct net_device_stats stats; 282 283 struct net_device *parent; 284 struct list_head child_intfs; 285 struct list_head list; 286 287#ifdef CONFIG_INFINIBAND_IPOIB_CM 288 struct ipoib_cm_dev_priv cm; 289#endif 290 291#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 292 struct list_head fs_list; 293 struct dentry *mcg_dentry; 294 struct dentry *path_dentry; 295#endif 296}; 297 298struct ipoib_ah { 299 struct net_device *dev; 300 struct ib_ah *ah; 301 struct list_head list; 302 struct kref ref; 303 unsigned last_send; 304}; 305 306struct ipoib_path { 307 struct net_device *dev; 308 struct ib_sa_path_rec pathrec; 309 struct ipoib_ah *ah; 310 struct sk_buff_head queue; 311 312 struct list_head neigh_list; 313 314 int query_id; 315 struct ib_sa_query *query; 316 struct completion done; 317 318 struct rb_node rb_node; 319 struct list_head list; 320}; 321 322struct ipoib_neigh { 323 struct ipoib_ah *ah; 324#ifdef CONFIG_INFINIBAND_IPOIB_CM 325 struct ipoib_cm_tx *cm; 326#endif 327 union ib_gid dgid; 328 struct sk_buff_head queue; 329 330 struct neighbour *neighbour; 331 332 struct list_head list; 333}; 334 335/* 336 * We stash a pointer to our private neighbour information after our 337 * hardware address in neigh->ha. The ALIGN() expression here makes 338 * sure that this pointer is stored aligned so that an unaligned 339 * load is not needed to dereference it. 340 */ 341static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh) 342{ 343 return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) + 344 INFINIBAND_ALEN, sizeof(void *)); 345} 346 347struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh); 348void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh); 349 350extern struct workqueue_struct *ipoib_workqueue; 351 352/* functions */ 353 354int ipoib_poll(struct net_device *dev, int *budget); 355void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr); 356 357struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 358 struct ib_pd *pd, struct ib_ah_attr *attr); 359void ipoib_free_ah(struct kref *kref); 360static inline void ipoib_put_ah(struct ipoib_ah *ah) 361{ 362 kref_put(&ah->ref, ipoib_free_ah); 363} 364 365int ipoib_open(struct net_device *dev); 366int ipoib_add_pkey_attr(struct net_device *dev); 367 368void ipoib_send(struct net_device *dev, struct sk_buff *skb, 369 struct ipoib_ah *address, u32 qpn); 370void ipoib_reap_ah(struct work_struct *work); 371 372void ipoib_flush_paths(struct net_device *dev); 373struct ipoib_dev_priv *ipoib_intf_alloc(const char *format); 374 375int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 376void ipoib_ib_dev_flush(struct work_struct *work); 377void ipoib_pkey_event(struct work_struct *work); 378void ipoib_ib_dev_cleanup(struct net_device *dev); 379 380int ipoib_ib_dev_open(struct net_device *dev); 381int ipoib_ib_dev_up(struct net_device *dev); 382int ipoib_ib_dev_down(struct net_device *dev, int flush); 383int ipoib_ib_dev_stop(struct net_device *dev, int flush); 384 385int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 386void ipoib_dev_cleanup(struct net_device *dev); 387 388void ipoib_mcast_join_task(struct work_struct *work); 389void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb); 390 391void ipoib_mcast_restart_task(struct work_struct *work); 392int ipoib_mcast_start_thread(struct net_device *dev); 393int ipoib_mcast_stop_thread(struct net_device *dev, int flush); 394 395void ipoib_mcast_dev_down(struct net_device *dev); 396void ipoib_mcast_dev_flush(struct net_device *dev); 397 398#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 399struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 400int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 401void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 402 union ib_gid *gid, 403 unsigned long *created, 404 unsigned int *queuelen, 405 unsigned int *complete, 406 unsigned int *send_only); 407 408struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 409int ipoib_path_iter_next(struct ipoib_path_iter *iter); 410void ipoib_path_iter_read(struct ipoib_path_iter *iter, 411 struct ipoib_path *path); 412#endif 413 414int ipoib_mcast_attach(struct net_device *dev, u16 mlid, 415 union ib_gid *mgid); 416int ipoib_mcast_detach(struct net_device *dev, u16 mlid, 417 union ib_gid *mgid); 418 419int ipoib_init_qp(struct net_device *dev); 420int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 421void ipoib_transport_dev_cleanup(struct net_device *dev); 422 423void ipoib_event(struct ib_event_handler *handler, 424 struct ib_event *record); 425 426int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 427int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 428 429void ipoib_pkey_poll(struct work_struct *work); 430int ipoib_pkey_dev_delay_open(struct net_device *dev); 431void ipoib_drain_cq(struct net_device *dev); 432 433#ifdef CONFIG_INFINIBAND_IPOIB_CM 434 435#define IPOIB_FLAGS_RC 0x80 436#define IPOIB_FLAGS_UC 0x40 437 438/* We don't support UC connections at the moment */ 439#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC)) 440 441static inline int ipoib_cm_admin_enabled(struct net_device *dev) 442{ 443 struct ipoib_dev_priv *priv = netdev_priv(dev); 444 return IPOIB_CM_SUPPORTED(dev->dev_addr) && 445 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 446} 447 448static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n) 449{ 450 struct ipoib_dev_priv *priv = netdev_priv(dev); 451 return IPOIB_CM_SUPPORTED(n->ha) && 452 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 453} 454 455static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 456 457{ 458 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags); 459} 460 461static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 462{ 463 return neigh->cm; 464} 465 466static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 467{ 468 neigh->cm = tx; 469} 470 471void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx); 472int ipoib_cm_dev_open(struct net_device *dev); 473void ipoib_cm_dev_stop(struct net_device *dev); 474int ipoib_cm_dev_init(struct net_device *dev); 475int ipoib_cm_add_mode_attr(struct net_device *dev); 476void ipoib_cm_dev_cleanup(struct net_device *dev); 477struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 478 struct ipoib_neigh *neigh); 479void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx); 480void ipoib_cm_skb_too_long(struct net_device* dev, struct sk_buff *skb, 481 unsigned int mtu); 482void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc); 483#else 484 485struct ipoib_cm_tx; 486 487static inline int ipoib_cm_admin_enabled(struct net_device *dev) 488{ 489 return 0; 490} 491static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n) 492 493{ 494 return 0; 495} 496 497static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 498 499{ 500 return 0; 501} 502 503static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 504{ 505 return NULL; 506} 507 508static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 509{ 510} 511 512static inline 513void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx) 514{ 515 return; 516} 517 518static inline 519int ipoib_cm_dev_open(struct net_device *dev) 520{ 521 return 0; 522} 523 524static inline 525void ipoib_cm_dev_stop(struct net_device *dev) 526{ 527 return; 528} 529 530static inline 531int ipoib_cm_dev_init(struct net_device *dev) 532{ 533 return -ENOSYS; 534} 535 536static inline 537void ipoib_cm_dev_cleanup(struct net_device *dev) 538{ 539 return; 540} 541 542static inline 543struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 544 struct ipoib_neigh *neigh) 545{ 546 return NULL; 547} 548 549static inline 550void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx) 551{ 552 return; 553} 554 555static inline 556int ipoib_cm_add_mode_attr(struct net_device *dev) 557{ 558 return 0; 559} 560 561static inline void ipoib_cm_skb_too_long(struct net_device* dev, struct sk_buff *skb, 562 unsigned int mtu) 563{ 564 dev_kfree_skb_any(skb); 565} 566 567static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) 568{ 569} 570 571#endif 572 573#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 574void ipoib_create_debug_files(struct net_device *dev); 575void ipoib_delete_debug_files(struct net_device *dev); 576int ipoib_register_debugfs(void); 577void ipoib_unregister_debugfs(void); 578#else 579static inline void ipoib_create_debug_files(struct net_device *dev) { } 580static inline void ipoib_delete_debug_files(struct net_device *dev) { } 581static inline int ipoib_register_debugfs(void) { return 0; } 582static inline void ipoib_unregister_debugfs(void) { } 583#endif 584 585 586#define ipoib_printk(level, priv, format, arg...) \ 587 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 588#define ipoib_warn(priv, format, arg...) \ 589 ipoib_printk(KERN_WARNING, priv, format , ## arg) 590 591extern int ipoib_sendq_size; 592extern int ipoib_recvq_size; 593 594extern struct ib_sa_client ipoib_sa_client; 595 596#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 597extern int ipoib_debug_level; 598 599#define ipoib_dbg(priv, format, arg...) \ 600 do { \ 601 if (ipoib_debug_level > 0) \ 602 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 603 } while (0) 604#define ipoib_dbg_mcast(priv, format, arg...) \ 605 do { \ 606 if (mcast_debug_level > 0) \ 607 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 608 } while (0) 609#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 610#define ipoib_dbg(priv, format, arg...) \ 611 do { (void) (priv); } while (0) 612#define ipoib_dbg_mcast(priv, format, arg...) \ 613 do { (void) (priv); } while (0) 614#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 615 616#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 617#define ipoib_dbg_data(priv, format, arg...) \ 618 do { \ 619 if (data_debug_level > 0) \ 620 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 621 } while (0) 622#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 623#define ipoib_dbg_data(priv, format, arg...) \ 624 do { (void) (priv); } while (0) 625#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 626 627 628#define IPOIB_GID_FMT "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:" \ 629 "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x" 630 631#define IPOIB_GID_RAW_ARG(gid) ((u8 *)(gid))[0], \ 632 ((u8 *)(gid))[1], \ 633 ((u8 *)(gid))[2], \ 634 ((u8 *)(gid))[3], \ 635 ((u8 *)(gid))[4], \ 636 ((u8 *)(gid))[5], \ 637 ((u8 *)(gid))[6], \ 638 ((u8 *)(gid))[7], \ 639 ((u8 *)(gid))[8], \ 640 ((u8 *)(gid))[9], \ 641 ((u8 *)(gid))[10],\ 642 ((u8 *)(gid))[11],\ 643 ((u8 *)(gid))[12],\ 644 ((u8 *)(gid))[13],\ 645 ((u8 *)(gid))[14],\ 646 ((u8 *)(gid))[15] 647 648#define IPOIB_GID_ARG(gid) IPOIB_GID_RAW_ARG((gid).raw) 649 650#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff) 651 652#endif /* _IPOIB_H */ 653