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
  35 #ifndef _IPOIB_H
  36 #define _IPOIB_H
  37
  38 #include <linux/list.h>
  39 #include <linux/skbuff.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/workqueue.h>
  42 #include <linux/kref.h>
  43 #include <linux/if_infiniband.h>
  44 #include <linux/mutex.h>
  45
  46 #include <net/neighbour.h>
  47
  48 #include <linux/atomic.h>
  49
  50 #include <rdma/ib_verbs.h>
  51 #include <rdma/ib_pack.h>
  52 #include <rdma/ib_sa.h>
  53 #include <linux/sched.h>
  54
  55 /* constants */
  56
  57 enum ipoib_flush_level {
  58         IPOIB_FLUSH_LIGHT,
  59         IPOIB_FLUSH_NORMAL,
  60         IPOIB_FLUSH_HEAVY
  61 };
  62
  63 enum {
  64         IPOIB_ENCAP_LEN           = 4,
  65
  66         IPOIB_UD_HEAD_SIZE        = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
  67         IPOIB_UD_RX_SG            = 2, /* max buffer needed for 4K mtu */
  68
  69         IPOIB_CM_MTU              = 0x10000 - 0x10, /* padding to align header to 16 */
  70         IPOIB_CM_BUF_SIZE         = IPOIB_CM_MTU  + IPOIB_ENCAP_LEN,
  71         IPOIB_CM_HEAD_SIZE        = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
  72         IPOIB_CM_RX_SG            = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
  73         IPOIB_RX_RING_SIZE        = 256,
  74         IPOIB_TX_RING_SIZE        = 128,
  75         IPOIB_MAX_QUEUE_SIZE      = 8192,
  76         IPOIB_MIN_QUEUE_SIZE      = 2,
  77         IPOIB_CM_MAX_CONN_QP      = 4096,
  78
  79         IPOIB_NUM_WC              = 4,
  80
  81         IPOIB_MAX_PATH_REC_QUEUE  = 3,
  82         IPOIB_MAX_MCAST_QUEUE     = 3,
  83
  84         IPOIB_FLAG_OPER_UP        = 0,
  85         IPOIB_FLAG_INITIALIZED    = 1,
  86         IPOIB_FLAG_ADMIN_UP       = 2,
  87         IPOIB_PKEY_ASSIGNED       = 3,
  88         IPOIB_PKEY_STOP           = 4,
  89         IPOIB_FLAG_SUBINTERFACE   = 5,
  90         IPOIB_MCAST_RUN           = 6,
  91         IPOIB_STOP_REAPER         = 7,
  92         IPOIB_FLAG_ADMIN_CM       = 9,
  93         IPOIB_FLAG_UMCAST         = 10,
  94
  95         IPOIB_MAX_BACKOFF_SECONDS = 16,
  96
  97         IPOIB_MCAST_FLAG_FOUND    = 0,  /* used in set_multicast_list */
  98         IPOIB_MCAST_FLAG_SENDONLY = 1,
  99         IPOIB_MCAST_FLAG_BUSY     = 2,  /* joining or already joined */
 100         IPOIB_MCAST_FLAG_ATTACHED = 3,
 101
 102         MAX_SEND_CQE              = 16,
 103         IPOIB_CM_COPYBREAK        = 256,
 104 };
 105
 106 #define IPOIB_OP_RECV   (1ul << 31)
 107 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 108 #define IPOIB_OP_CM     (1ul << 30)
 109 #else
 110 #define IPOIB_OP_CM     (0)
 111 #endif
 112
 113 /* structs */
 114
 115 struct ipoib_header {
 116         __be16  proto;
 117         u16     reserved;
 118 };
 119
 120 struct ipoib_pseudoheader {
 121         u8  hwaddr[INFINIBAND_ALEN];
 122 };
 123
 124 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
 125 struct ipoib_mcast {
 126         struct ib_sa_mcmember_rec mcmember;
 127         struct ib_sa_multicast   *mc;
 128         struct ipoib_ah          *ah;
 129
 130         struct rb_node    rb_node;
 131         struct list_head  list;
 132
 133         unsigned long created;
 134         unsigned long backoff;
 135
 136         unsigned long flags;
 137         unsigned char logcount;
 138
 139         struct list_head  neigh_list;
 140
 141         struct sk_buff_head pkt_queue;
 142
 143         struct net_device *dev;
 144 };
 145
 146 struct ipoib_rx_buf {
 147         struct sk_buff *skb;
 148         u64             mapping[IPOIB_UD_RX_SG];
 149 };
 150
 151 struct ipoib_tx_buf {
 152         struct sk_buff *skb;
 153         u64             mapping[MAX_SKB_FRAGS + 1];
 154 };
 155
 156 struct ipoib_cm_tx_buf {
 157         struct sk_buff *skb;
 158         u64             mapping;
 159 };
 160
 161 struct ib_cm_id;
 162
 163 struct ipoib_cm_data {
 164         __be32 qpn; /* High byte MUST be ignored on receive */
 165         __be32 mtu;
 166 };
 167
 168 /*
 169  * Quoting 10.3.1 Queue Pair and EE Context States:
 170  *
 171  * Note, for QPs that are associated with an SRQ, the Consumer should take the
 172  * QP through the Error State before invoking a Destroy QP or a Modify QP to the
 173  * Reset State.  The Consumer may invoke the Destroy QP without first performing
 174  * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
 175  * Last WQE Reached Event. However, if the Consumer does not wait for the
 176  * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
 177  * leakage may occur. Therefore, it is good programming practice to tear down a
 178  * QP that is associated with an SRQ by using the following process:
 179  *
 180  * - Put the QP in the Error State
 181  * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
 182  * - either:
 183  *       drain the CQ by invoking the Poll CQ verb and either wait for CQ
 184  *       to be empty or the number of Poll CQ operations has exceeded
 185  *       CQ capacity size;
 186  * - or
 187  *       post another WR that completes on the same CQ and wait for this
 188  *       WR to return as a WC;
 189  * - and then invoke a Destroy QP or Reset QP.
 190  *
 191  * We use the second option and wait for a completion on the
 192  * same CQ before destroying QPs attached to our SRQ.
 193  */
 194
 195 enum ipoib_cm_state {
 196         IPOIB_CM_RX_LIVE,
 197         IPOIB_CM_RX_ERROR, /* Ignored by stale task */
 198         IPOIB_CM_RX_FLUSH  /* Last WQE Reached event observed */
 199 };
 200
 201 struct ipoib_cm_rx {
 202         struct ib_cm_id        *id;
 203         struct ib_qp           *qp;
 204         struct ipoib_cm_rx_buf *rx_ring;
 205         struct list_head        list;
 206         struct net_device      *dev;
 207         unsigned long           jiffies;
 208         enum ipoib_cm_state     state;
 209         int                     recv_count;
 210 };
 211
 212 struct ipoib_cm_tx {
 213         struct ib_cm_id     *id;
 214         struct ib_qp        *qp;
 215         struct list_head     list;
 216         struct net_device   *dev;
 217         struct ipoib_neigh  *neigh;
 218         struct ipoib_path   *path;
 219         struct ipoib_cm_tx_buf *tx_ring;
 220         unsigned             tx_head;
 221         unsigned             tx_tail;
 222         unsigned long        flags;
 223         u32                  mtu;
 224 };
 225
 226 struct ipoib_cm_rx_buf {
 227         struct sk_buff *skb;
 228         u64 mapping[IPOIB_CM_RX_SG];
 229 };
 230
 231 struct ipoib_cm_dev_priv {
 232         struct ib_srq          *srq;
 233         struct ipoib_cm_rx_buf *srq_ring;
 234         struct ib_cm_id        *id;
 235         struct list_head        passive_ids;   /* state: LIVE */
 236         struct list_head        rx_error_list; /* state: ERROR */
 237         struct list_head        rx_flush_list; /* state: FLUSH, drain not started */
 238         struct list_head        rx_drain_list; /* state: FLUSH, drain started */
 239         struct list_head        rx_reap_list;  /* state: FLUSH, drain done */
 240         struct work_struct      start_task;
 241         struct work_struct      reap_task;
 242         struct work_struct      skb_task;
 243         struct work_struct      rx_reap_task;
 244         struct delayed_work     stale_task;
 245         struct sk_buff_head     skb_queue;
 246         struct list_head        start_list;
 247         struct list_head        reap_list;
 248         struct ib_wc            ibwc[IPOIB_NUM_WC];
 249         struct ib_sge           rx_sge[IPOIB_CM_RX_SG];
 250         struct ib_recv_wr       rx_wr;
 251         int                     nonsrq_conn_qp;
 252         int                     max_cm_mtu;
 253         int                     num_frags;
 254 };
 255
 256 struct ipoib_ethtool_st {
 257         u16     coalesce_usecs;
 258         u16     max_coalesced_frames;
 259 };
 260
 261 /*
 262  * Device private locking: network stack tx_lock protects members used
 263  * in TX fast path, lock protects everything else.  lock nests inside
 264  * of tx_lock (ie tx_lock must be acquired first if needed).
 265  */
 266 struct ipoib_dev_priv {
 267         spinlock_t lock;
 268
 269         struct net_device *dev;
 270
 271         struct napi_struct napi;
 272
 273         unsigned long flags;
 274
 275         struct mutex vlan_mutex;
 276
 277         struct rb_root  path_tree;
 278         struct list_head path_list;
 279
 280         struct ipoib_mcast *broadcast;
 281         struct list_head multicast_list;
 282         struct rb_root multicast_tree;
 283
 284         struct delayed_work pkey_poll_task;
 285         struct delayed_work mcast_task;
 286         struct work_struct carrier_on_task;
 287         struct work_struct flush_light;
 288         struct work_struct flush_normal;
 289         struct work_struct flush_heavy;
 290         struct work_struct restart_task;
 291         struct delayed_work ah_reap_task;
 292
 293         struct ib_device *ca;
 294         u8                port;
 295         u16               pkey;
 296         u16               pkey_index;
 297         struct ib_pd     *pd;
 298         struct ib_mr     *mr;
 299         struct ib_cq     *recv_cq;
 300         struct ib_cq     *send_cq;
 301         struct ib_qp     *qp;
 302         u32               qkey;
 303
 304         union ib_gid local_gid;
 305         u16          local_lid;
 306
 307         unsigned int admin_mtu;
 308         unsigned int mcast_mtu;
 309         unsigned int max_ib_mtu;
 310
 311         struct ipoib_rx_buf *rx_ring;
 312
 313         struct ipoib_tx_buf *tx_ring;
 314         unsigned             tx_head;
 315         unsigned             tx_tail;
 316         struct ib_sge        tx_sge[MAX_SKB_FRAGS + 1];
 317         struct ib_send_wr    tx_wr;
 318         unsigned             tx_outstanding;
 319         struct ib_wc         send_wc[MAX_SEND_CQE];
 320
 321         struct ib_recv_wr    rx_wr;
 322         struct ib_sge        rx_sge[IPOIB_UD_RX_SG];
 323
 324         struct ib_wc ibwc[IPOIB_NUM_WC];
 325
 326         struct list_head dead_ahs;
 327
 328         struct ib_event_handler event_handler;
 329
 330         struct net_device *parent;
 331         struct list_head child_intfs;
 332         struct list_head list;
 333
 334 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 335         struct ipoib_cm_dev_priv cm;
 336 #endif
 337
 338 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 339         struct list_head fs_list;
 340         struct dentry *mcg_dentry;
 341         struct dentry *path_dentry;
 342 #endif
 343         int     hca_caps;
 344         struct ipoib_ethtool_st ethtool;
 345         struct timer_list poll_timer;
 346 };
 347
 348 struct ipoib_ah {
 349         struct net_device *dev;
 350         struct ib_ah      *ah;
 351         struct list_head   list;
 352         struct kref        ref;
 353         unsigned           last_send;
 354 };
 355
 356 struct ipoib_path {
 357         struct net_device    *dev;
 358         struct ib_sa_path_rec pathrec;
 359         struct ipoib_ah      *ah;
 360         struct sk_buff_head   queue;
 361
 362         struct list_head      neigh_list;
 363
 364         int                   query_id;
 365         struct ib_sa_query   *query;
 366         struct completion     done;
 367
 368         struct rb_node        rb_node;
 369         struct list_head      list;
 370         int                   valid;
 371 };
 372
 373 struct ipoib_neigh {
 374         struct ipoib_ah    *ah;
 375 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 376         struct ipoib_cm_tx *cm;
 377 #endif
 378         union ib_gid        dgid;
 379         struct sk_buff_head queue;
 380
 381         struct neighbour   *neighbour;
 382         struct net_device *dev;
 383
 384         struct list_head    list;
 385 };
 386
 387 #define IPOIB_UD_MTU(ib_mtu)            (ib_mtu - IPOIB_ENCAP_LEN)
 388 #define IPOIB_UD_BUF_SIZE(ib_mtu)       (ib_mtu + IB_GRH_BYTES)
 389
 390 static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
 391 {
 392         return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
 393 }
 394
 395 /*
 396  * We stash a pointer to our private neighbour information after our
 397  * hardware address in neigh->ha.  The ALIGN() expression here makes
 398  * sure that this pointer is stored aligned so that an unaligned
 399  * load is not needed to dereference it.
 400  */
 401 static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
 402 {
 403         return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
 404                                      INFINIBAND_ALEN, sizeof(void *));
 405 }
 406
 407 struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh,
 408                                       struct net_device *dev);
 409 void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh);
 410
 411 extern struct workqueue_struct *ipoib_workqueue;
 412
 413 /* functions */
 414
 415 int ipoib_poll(struct napi_struct *napi, int budget);
 416 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
 417 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
 418
 419 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 420                                  struct ib_pd *pd, struct ib_ah_attr *attr);
 421 void ipoib_free_ah(struct kref *kref);
 422 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 423 {
 424         kref_put(&ah->ref, ipoib_free_ah);
 425 }
 426
 427 int ipoib_open(struct net_device *dev);
 428 int ipoib_add_pkey_attr(struct net_device *dev);
 429 int ipoib_add_umcast_attr(struct net_device *dev);
 430
 431 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 432                 struct ipoib_ah *address, u32 qpn);
 433 void ipoib_reap_ah(struct work_struct *work);
 434
 435 void ipoib_mark_paths_invalid(struct net_device *dev);
 436 void ipoib_flush_paths(struct net_device *dev);
 437 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
 438
 439 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 440 void ipoib_ib_dev_flush_light(struct work_struct *work);
 441 void ipoib_ib_dev_flush_normal(struct work_struct *work);
 442 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
 443 void ipoib_pkey_event(struct work_struct *work);
 444 void ipoib_ib_dev_cleanup(struct net_device *dev);
 445
 446 int ipoib_ib_dev_open(struct net_device *dev);
 447 int ipoib_ib_dev_up(struct net_device *dev);
 448 int ipoib_ib_dev_down(struct net_device *dev, int flush);
 449 int ipoib_ib_dev_stop(struct net_device *dev, int flush);
 450
 451 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 452 void ipoib_dev_cleanup(struct net_device *dev);
 453
 454 void ipoib_mcast_join_task(struct work_struct *work);
 455 void ipoib_mcast_carrier_on_task(struct work_struct *work);
 456 void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb);
 457
 458 void ipoib_mcast_restart_task(struct work_struct *work);
 459 int ipoib_mcast_start_thread(struct net_device *dev);
 460 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
 461
 462 void ipoib_mcast_dev_down(struct net_device *dev);
 463 void ipoib_mcast_dev_flush(struct net_device *dev);
 464
 465 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 466 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 467 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 468 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 469                                   union ib_gid *gid,
 470                                   unsigned long *created,
 471                                   unsigned int *queuelen,
 472                                   unsigned int *complete,
 473                                   unsigned int *send_only);
 474
 475 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 476 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 477 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 478                           struct ipoib_path *path);
 479 #endif
 480
 481 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
 482                        union ib_gid *mgid, int set_qkey);
 483
 484 int ipoib_init_qp(struct net_device *dev);
 485 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 486 void ipoib_transport_dev_cleanup(struct net_device *dev);
 487
 488 void ipoib_event(struct ib_event_handler *handler,
 489                  struct ib_event *record);
 490
 491 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 492 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 493
 494 void ipoib_pkey_poll(struct work_struct *work);
 495 int ipoib_pkey_dev_delay_open(struct net_device *dev);
 496 void ipoib_drain_cq(struct net_device *dev);
 497
 498 void ipoib_set_ethtool_ops(struct net_device *dev);
 499 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
 500
 501 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 502
 503 #define IPOIB_FLAGS_RC          0x80
 504 #define IPOIB_FLAGS_UC          0x40
 505
 506 /* We don't support UC connections at the moment */
 507 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 508
 509 extern int ipoib_max_conn_qp;
 510
 511 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 512 {
 513         struct ipoib_dev_priv *priv = netdev_priv(dev);
 514         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 515                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 516 }
 517
 518 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
 519 {
 520         struct ipoib_dev_priv *priv = netdev_priv(dev);
 521         return IPOIB_CM_SUPPORTED(n->ha) &&
 522                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 523 }
 524
 525 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 526
 527 {
 528         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 529 }
 530
 531 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 532 {
 533         return neigh->cm;
 534 }
 535
 536 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 537 {
 538         neigh->cm = tx;
 539 }
 540
 541 static inline int ipoib_cm_has_srq(struct net_device *dev)
 542 {
 543         struct ipoib_dev_priv *priv = netdev_priv(dev);
 544         return !!priv->cm.srq;
 545 }
 546
 547 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 548 {
 549         struct ipoib_dev_priv *priv = netdev_priv(dev);
 550         return priv->cm.max_cm_mtu;
 551 }
 552
 553 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 554 int ipoib_cm_dev_open(struct net_device *dev);
 555 void ipoib_cm_dev_stop(struct net_device *dev);
 556 int ipoib_cm_dev_init(struct net_device *dev);
 557 int ipoib_cm_add_mode_attr(struct net_device *dev);
 558 void ipoib_cm_dev_cleanup(struct net_device *dev);
 559 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 560                                     struct ipoib_neigh *neigh);
 561 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 562 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 563                            unsigned int mtu);
 564 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 565 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
 566 #else
 567
 568 struct ipoib_cm_tx;
 569
 570 #define ipoib_max_conn_qp 0
 571
 572 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 573 {
 574         return 0;
 575 }
 576 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
 577
 578 {
 579         return 0;
 580 }
 581
 582 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 583
 584 {
 585         return 0;
 586 }
 587
 588 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 589 {
 590         return NULL;
 591 }
 592
 593 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 594 {
 595 }
 596
 597 static inline int ipoib_cm_has_srq(struct net_device *dev)
 598 {
 599         return 0;
 600 }
 601
 602 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 603 {
 604         return 0;
 605 }
 606
 607 static inline
 608 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 609 {
 610         return;
 611 }
 612
 613 static inline
 614 int ipoib_cm_dev_open(struct net_device *dev)
 615 {
 616         return 0;
 617 }
 618
 619 static inline
 620 void ipoib_cm_dev_stop(struct net_device *dev)
 621 {
 622         return;
 623 }
 624
 625 static inline
 626 int ipoib_cm_dev_init(struct net_device *dev)
 627 {
 628         return -ENOSYS;
 629 }
 630
 631 static inline
 632 void ipoib_cm_dev_cleanup(struct net_device *dev)
 633 {
 634         return;
 635 }
 636
 637 static inline
 638 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 639                                     struct ipoib_neigh *neigh)
 640 {
 641         return NULL;
 642 }
 643
 644 static inline
 645 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 646 {
 647         return;
 648 }
 649
 650 static inline
 651 int ipoib_cm_add_mode_attr(struct net_device *dev)
 652 {
 653         return 0;
 654 }
 655
 656 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 657                                          unsigned int mtu)
 658 {
 659         dev_kfree_skb_any(skb);
 660 }
 661
 662 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 663 {
 664 }
 665
 666 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 667 {
 668 }
 669 #endif
 670
 671 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 672 void ipoib_create_debug_files(struct net_device *dev);
 673 void ipoib_delete_debug_files(struct net_device *dev);
 674 int ipoib_register_debugfs(void);
 675 void ipoib_unregister_debugfs(void);
 676 #else
 677 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 678 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 679 static inline int ipoib_register_debugfs(void) { return 0; }
 680 static inline void ipoib_unregister_debugfs(void) { }
 681 #endif
 682
 683 #define ipoib_printk(level, priv, format, arg...)       \
 684         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 685 #define ipoib_warn(priv, format, arg...)                \
 686         ipoib_printk(KERN_WARNING, priv, format , ## arg)
 687
 688 extern int ipoib_sendq_size;
 689 extern int ipoib_recvq_size;
 690
 691 extern struct ib_sa_client ipoib_sa_client;
 692
 693 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 694 extern int ipoib_debug_level;
 695
 696 #define ipoib_dbg(priv, format, arg...)                 \
 697         do {                                            \
 698                 if (ipoib_debug_level > 0)                      \
 699                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 700         } while (0)
 701 #define ipoib_dbg_mcast(priv, format, arg...)           \
 702         do {                                            \
 703                 if (mcast_debug_level > 0)              \
 704                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 705         } while (0)
 706 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 707 #define ipoib_dbg(priv, format, arg...)                 \
 708         do { (void) (priv); } while (0)
 709 #define ipoib_dbg_mcast(priv, format, arg...)           \
 710         do { (void) (priv); } while (0)
 711 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 712
 713 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 714 #define ipoib_dbg_data(priv, format, arg...)            \
 715         do {                                            \
 716                 if (data_debug_level > 0)               \
 717                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 718         } while (0)
 719 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 720 #define ipoib_dbg_data(priv, format, arg...)            \
 721         do { (void) (priv); } while (0)
 722 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 723
 724 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 725
 726 #endif /* _IPOIB_H */