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 <asm/atomic.h>
  49
  50 #include <rdma/ib_verbs.h>
  51 #include <rdma/ib_pack.h>
  52 #include <rdma/ib_sa.h>
  53 #include <linux/inet_lro.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        = 128,
  74         IPOIB_TX_RING_SIZE        = 64,
  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         IPOIB_FLAG_CSUM           = 11,
  95
  96         IPOIB_MAX_BACKOFF_SECONDS = 16,
  97
  98         IPOIB_MCAST_FLAG_FOUND    = 0,  /* used in set_multicast_list */
  99         IPOIB_MCAST_FLAG_SENDONLY = 1,
 100         IPOIB_MCAST_FLAG_BUSY     = 2,  /* joining or already joined */
 101         IPOIB_MCAST_FLAG_ATTACHED = 3,
 102
 103         IPOIB_MAX_LRO_DESCRIPTORS = 8,
 104         IPOIB_LRO_MAX_AGGR        = 64,
 105
 106         MAX_SEND_CQE              = 16,
 107         IPOIB_CM_COPYBREAK        = 256,
 108 };
 109
 110 #define IPOIB_OP_RECV   (1ul << 31)
 111 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 112 #define IPOIB_OP_CM     (1ul << 30)
 113 #else
 114 #define IPOIB_OP_CM     (0)
 115 #endif
 116
 117 /* structs */
 118
 119 struct ipoib_header {
 120         __be16  proto;
 121         u16     reserved;
 122 };
 123
 124 struct ipoib_pseudoheader {
 125         u8  hwaddr[INFINIBAND_ALEN];
 126 };
 127
 128 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
 129 struct ipoib_mcast {
 130         struct ib_sa_mcmember_rec mcmember;
 131         struct ib_sa_multicast   *mc;
 132         struct ipoib_ah          *ah;
 133
 134         struct rb_node    rb_node;
 135         struct list_head  list;
 136
 137         unsigned long created;
 138         unsigned long backoff;
 139
 140         unsigned long flags;
 141         unsigned char logcount;
 142
 143         struct list_head  neigh_list;
 144
 145         struct sk_buff_head pkt_queue;
 146
 147         struct net_device *dev;
 148 };
 149
 150 struct ipoib_rx_buf {
 151         struct sk_buff *skb;
 152         u64             mapping[IPOIB_UD_RX_SG];
 153 };
 154
 155 struct ipoib_tx_buf {
 156         struct sk_buff *skb;
 157         u64             mapping[MAX_SKB_FRAGS + 1];
 158 };
 159
 160 struct ib_cm_id;
 161
 162 struct ipoib_cm_data {
 163         __be32 qpn; /* High byte MUST be ignored on receive */
 164         __be32 mtu;
 165 };
 166
 167 /*
 168  * Quoting 10.3.1 Queue Pair and EE Context States:
 169  *
 170  * Note, for QPs that are associated with an SRQ, the Consumer should take the
 171  * QP through the Error State before invoking a Destroy QP or a Modify QP to the
 172  * Reset State.  The Consumer may invoke the Destroy QP without first performing
 173  * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
 174  * Last WQE Reached Event. However, if the Consumer does not wait for the
 175  * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
 176  * leakage may occur. Therefore, it is good programming practice to tear down a
 177  * QP that is associated with an SRQ by using the following process:
 178  *
 179  * - Put the QP in the Error State
 180  * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
 181  * - either:
 182  *       drain the CQ by invoking the Poll CQ verb and either wait for CQ
 183  *       to be empty or the number of Poll CQ operations has exceeded
 184  *       CQ capacity size;
 185  * - or
 186  *       post another WR that completes on the same CQ and wait for this
 187  *       WR to return as a WC;
 188  * - and then invoke a Destroy QP or Reset QP.
 189  *
 190  * We use the second option and wait for a completion on the
 191  * same CQ before destroying QPs attached to our SRQ.
 192  */
 193
 194 enum ipoib_cm_state {
 195         IPOIB_CM_RX_LIVE,
 196         IPOIB_CM_RX_ERROR, /* Ignored by stale task */
 197         IPOIB_CM_RX_FLUSH  /* Last WQE Reached event observed */
 198 };
 199
 200 struct ipoib_cm_rx {
 201         struct ib_cm_id        *id;
 202         struct ib_qp           *qp;
 203         struct ipoib_cm_rx_buf *rx_ring;
 204         struct list_head        list;
 205         struct net_device      *dev;
 206         unsigned long           jiffies;
 207         enum ipoib_cm_state     state;
 208         int                     recv_count;
 209 };
 210
 211 struct ipoib_cm_tx {
 212         struct ib_cm_id     *id;
 213         struct ib_qp        *qp;
 214         struct list_head     list;
 215         struct net_device   *dev;
 216         struct ipoib_neigh  *neigh;
 217         struct ipoib_path   *path;
 218         struct ipoib_tx_buf *tx_ring;
 219         unsigned             tx_head;
 220         unsigned             tx_tail;
 221         unsigned long        flags;
 222         u32                  mtu;
 223 };
 224
 225 struct ipoib_cm_rx_buf {
 226         struct sk_buff *skb;
 227         u64 mapping[IPOIB_CM_RX_SG];
 228 };
 229
 230 struct ipoib_cm_dev_priv {
 231         struct ib_srq          *srq;
 232         struct ipoib_cm_rx_buf *srq_ring;
 233         struct ib_cm_id        *id;
 234         struct list_head        passive_ids;   /* state: LIVE */
 235         struct list_head        rx_error_list; /* state: ERROR */
 236         struct list_head        rx_flush_list; /* state: FLUSH, drain not started */
 237         struct list_head        rx_drain_list; /* state: FLUSH, drain started */
 238         struct list_head        rx_reap_list;  /* state: FLUSH, drain done */
 239         struct work_struct      start_task;
 240         struct work_struct      reap_task;
 241         struct work_struct      skb_task;
 242         struct work_struct      rx_reap_task;
 243         struct delayed_work     stale_task;
 244         struct sk_buff_head     skb_queue;
 245         struct list_head        start_list;
 246         struct list_head        reap_list;
 247         struct ib_wc            ibwc[IPOIB_NUM_WC];
 248         struct ib_sge           rx_sge[IPOIB_CM_RX_SG];
 249         struct ib_recv_wr       rx_wr;
 250         int                     nonsrq_conn_qp;
 251         int                     max_cm_mtu;
 252         int                     num_frags;
 253 };
 254
 255 struct ipoib_ethtool_st {
 256         u16     coalesce_usecs;
 257         u16     max_coalesced_frames;
 258 };
 259
 260 struct ipoib_lro {
 261         struct net_lro_mgr lro_mgr;
 262         struct net_lro_desc lro_desc[IPOIB_MAX_LRO_DESCRIPTORS];
 263 };
 264
 265 /*
 266  * Device private locking: tx_lock protects members used in TX fast
 267  * path (and we use LLTX so upper layers don't do extra locking).
 268  * lock protects everything else.  lock nests inside of tx_lock (ie
 269  * tx_lock must be acquired first if needed).
 270  */
 271 struct ipoib_dev_priv {
 272         spinlock_t lock;
 273
 274         struct net_device *dev;
 275
 276         struct napi_struct napi;
 277
 278         unsigned long flags;
 279
 280         struct mutex vlan_mutex;
 281
 282         struct rb_root  path_tree;
 283         struct list_head path_list;
 284
 285         struct ipoib_mcast *broadcast;
 286         struct list_head multicast_list;
 287         struct rb_root multicast_tree;
 288
 289         struct delayed_work pkey_poll_task;
 290         struct delayed_work mcast_task;
 291         struct work_struct flush_light;
 292         struct work_struct flush_normal;
 293         struct work_struct flush_heavy;
 294         struct work_struct restart_task;
 295         struct delayed_work ah_reap_task;
 296
 297         struct ib_device *ca;
 298         u8                port;
 299         u16               pkey;
 300         u16               pkey_index;
 301         struct ib_pd     *pd;
 302         struct ib_mr     *mr;
 303         struct ib_cq     *recv_cq;
 304         struct ib_cq     *send_cq;
 305         struct ib_qp     *qp;
 306         u32               qkey;
 307
 308         union ib_gid local_gid;
 309         u16          local_lid;
 310
 311         unsigned int admin_mtu;
 312         unsigned int mcast_mtu;
 313         unsigned int max_ib_mtu;
 314
 315         struct ipoib_rx_buf *rx_ring;
 316
 317         spinlock_t           tx_lock;
 318         struct ipoib_tx_buf *tx_ring;
 319         unsigned             tx_head;
 320         unsigned             tx_tail;
 321         struct ib_sge        tx_sge[MAX_SKB_FRAGS + 1];
 322         struct ib_send_wr    tx_wr;
 323         unsigned             tx_outstanding;
 324         struct ib_wc         send_wc[MAX_SEND_CQE];
 325
 326         struct ib_recv_wr    rx_wr;
 327         struct ib_sge        rx_sge[IPOIB_UD_RX_SG];
 328
 329         struct ib_wc ibwc[IPOIB_NUM_WC];
 330
 331         struct list_head dead_ahs;
 332
 333         struct ib_event_handler event_handler;
 334
 335         struct net_device *parent;
 336         struct list_head child_intfs;
 337         struct list_head list;
 338
 339 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 340         struct ipoib_cm_dev_priv cm;
 341 #endif
 342
 343 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 344         struct list_head fs_list;
 345         struct dentry *mcg_dentry;
 346         struct dentry *path_dentry;
 347 #endif
 348         int     hca_caps;
 349         struct ipoib_ethtool_st ethtool;
 350         struct timer_list poll_timer;
 351
 352         struct ipoib_lro lro;
 353 };
 354
 355 struct ipoib_ah {
 356         struct net_device *dev;
 357         struct ib_ah      *ah;
 358         struct list_head   list;
 359         struct kref        ref;
 360         unsigned           last_send;
 361 };
 362
 363 struct ipoib_path {
 364         struct net_device    *dev;
 365         struct ib_sa_path_rec pathrec;
 366         struct ipoib_ah      *ah;
 367         struct sk_buff_head   queue;
 368
 369         struct list_head      neigh_list;
 370
 371         int                   query_id;
 372         struct ib_sa_query   *query;
 373         struct completion     done;
 374
 375         struct rb_node        rb_node;
 376         struct list_head      list;
 377         int                   valid;
 378 };
 379
 380 struct ipoib_neigh {
 381         struct ipoib_ah    *ah;
 382 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 383         struct ipoib_cm_tx *cm;
 384 #endif
 385         union ib_gid        dgid;
 386         struct sk_buff_head queue;
 387
 388         struct neighbour   *neighbour;
 389         struct net_device *dev;
 390
 391         struct list_head    list;
 392 };
 393
 394 #define IPOIB_UD_MTU(ib_mtu)            (ib_mtu - IPOIB_ENCAP_LEN)
 395 #define IPOIB_UD_BUF_SIZE(ib_mtu)       (ib_mtu + IB_GRH_BYTES)
 396
 397 static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
 398 {
 399         return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
 400 }
 401
 402 /*
 403  * We stash a pointer to our private neighbour information after our
 404  * hardware address in neigh->ha.  The ALIGN() expression here makes
 405  * sure that this pointer is stored aligned so that an unaligned
 406  * load is not needed to dereference it.
 407  */
 408 static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
 409 {
 410         return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
 411                                      INFINIBAND_ALEN, sizeof(void *));
 412 }
 413
 414 struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh,
 415                                       struct net_device *dev);
 416 void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh);
 417
 418 extern struct workqueue_struct *ipoib_workqueue;
 419
 420 /* functions */
 421
 422 int ipoib_poll(struct napi_struct *napi, int budget);
 423 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
 424 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
 425
 426 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 427                                  struct ib_pd *pd, struct ib_ah_attr *attr);
 428 void ipoib_free_ah(struct kref *kref);
 429 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 430 {
 431         kref_put(&ah->ref, ipoib_free_ah);
 432 }
 433
 434 int ipoib_open(struct net_device *dev);
 435 int ipoib_add_pkey_attr(struct net_device *dev);
 436 int ipoib_add_umcast_attr(struct net_device *dev);
 437
 438 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 439                 struct ipoib_ah *address, u32 qpn);
 440 void ipoib_reap_ah(struct work_struct *work);
 441
 442 void ipoib_mark_paths_invalid(struct net_device *dev);
 443 void ipoib_flush_paths(struct net_device *dev);
 444 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
 445
 446 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 447 void ipoib_ib_dev_flush_light(struct work_struct *work);
 448 void ipoib_ib_dev_flush_normal(struct work_struct *work);
 449 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
 450 void ipoib_pkey_event(struct work_struct *work);
 451 void ipoib_ib_dev_cleanup(struct net_device *dev);
 452
 453 int ipoib_ib_dev_open(struct net_device *dev);
 454 int ipoib_ib_dev_up(struct net_device *dev);
 455 int ipoib_ib_dev_down(struct net_device *dev, int flush);
 456 int ipoib_ib_dev_stop(struct net_device *dev, int flush);
 457
 458 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 459 void ipoib_dev_cleanup(struct net_device *dev);
 460
 461 void ipoib_mcast_join_task(struct work_struct *work);
 462 void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb);
 463
 464 void ipoib_mcast_restart_task(struct work_struct *work);
 465 int ipoib_mcast_start_thread(struct net_device *dev);
 466 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
 467
 468 void ipoib_mcast_dev_down(struct net_device *dev);
 469 void ipoib_mcast_dev_flush(struct net_device *dev);
 470
 471 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 472 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 473 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 474 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 475                                   union ib_gid *gid,
 476                                   unsigned long *created,
 477                                   unsigned int *queuelen,
 478                                   unsigned int *complete,
 479                                   unsigned int *send_only);
 480
 481 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 482 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 483 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 484                           struct ipoib_path *path);
 485 #endif
 486
 487 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
 488                        union ib_gid *mgid, int set_qkey);
 489 int ipoib_mcast_detach(struct net_device *dev, u16 mlid,
 490                        union ib_gid *mgid);
 491
 492 int ipoib_init_qp(struct net_device *dev);
 493 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 494 void ipoib_transport_dev_cleanup(struct net_device *dev);
 495
 496 void ipoib_event(struct ib_event_handler *handler,
 497                  struct ib_event *record);
 498
 499 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 500 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 501
 502 void ipoib_pkey_poll(struct work_struct *work);
 503 int ipoib_pkey_dev_delay_open(struct net_device *dev);
 504 void ipoib_drain_cq(struct net_device *dev);
 505
 506 void ipoib_set_ethtool_ops(struct net_device *dev);
 507
 508 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 509
 510 #define IPOIB_FLAGS_RC          0x80
 511 #define IPOIB_FLAGS_UC          0x40
 512
 513 /* We don't support UC connections at the moment */
 514 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 515
 516 extern int ipoib_max_conn_qp;
 517
 518 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 519 {
 520         struct ipoib_dev_priv *priv = netdev_priv(dev);
 521         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 522                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 523 }
 524
 525 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
 526 {
 527         struct ipoib_dev_priv *priv = netdev_priv(dev);
 528         return IPOIB_CM_SUPPORTED(n->ha) &&
 529                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 530 }
 531
 532 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 533
 534 {
 535         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 536 }
 537
 538 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 539 {
 540         return neigh->cm;
 541 }
 542
 543 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 544 {
 545         neigh->cm = tx;
 546 }
 547
 548 static inline int ipoib_cm_has_srq(struct net_device *dev)
 549 {
 550         struct ipoib_dev_priv *priv = netdev_priv(dev);
 551         return !!priv->cm.srq;
 552 }
 553
 554 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 555 {
 556         struct ipoib_dev_priv *priv = netdev_priv(dev);
 557         return priv->cm.max_cm_mtu;
 558 }
 559
 560 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 561 int ipoib_cm_dev_open(struct net_device *dev);
 562 void ipoib_cm_dev_stop(struct net_device *dev);
 563 int ipoib_cm_dev_init(struct net_device *dev);
 564 int ipoib_cm_add_mode_attr(struct net_device *dev);
 565 void ipoib_cm_dev_cleanup(struct net_device *dev);
 566 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 567                                     struct ipoib_neigh *neigh);
 568 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 569 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 570                            unsigned int mtu);
 571 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 572 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
 573 #else
 574
 575 struct ipoib_cm_tx;
 576
 577 #define ipoib_max_conn_qp 0
 578
 579 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 580 {
 581         return 0;
 582 }
 583 static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
 584
 585 {
 586         return 0;
 587 }
 588
 589 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 590
 591 {
 592         return 0;
 593 }
 594
 595 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 596 {
 597         return NULL;
 598 }
 599
 600 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 601 {
 602 }
 603
 604 static inline int ipoib_cm_has_srq(struct net_device *dev)
 605 {
 606         return 0;
 607 }
 608
 609 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 610 {
 611         return 0;
 612 }
 613
 614 static inline
 615 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 616 {
 617         return;
 618 }
 619
 620 static inline
 621 int ipoib_cm_dev_open(struct net_device *dev)
 622 {
 623         return 0;
 624 }
 625
 626 static inline
 627 void ipoib_cm_dev_stop(struct net_device *dev)
 628 {
 629         return;
 630 }
 631
 632 static inline
 633 int ipoib_cm_dev_init(struct net_device *dev)
 634 {
 635         return -ENOSYS;
 636 }
 637
 638 static inline
 639 void ipoib_cm_dev_cleanup(struct net_device *dev)
 640 {
 641         return;
 642 }
 643
 644 static inline
 645 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 646                                     struct ipoib_neigh *neigh)
 647 {
 648         return NULL;
 649 }
 650
 651 static inline
 652 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 653 {
 654         return;
 655 }
 656
 657 static inline
 658 int ipoib_cm_add_mode_attr(struct net_device *dev)
 659 {
 660         return 0;
 661 }
 662
 663 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 664                                          unsigned int mtu)
 665 {
 666         dev_kfree_skb_any(skb);
 667 }
 668
 669 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 670 {
 671 }
 672
 673 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 674 {
 675 }
 676 #endif
 677
 678 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 679 void ipoib_create_debug_files(struct net_device *dev);
 680 void ipoib_delete_debug_files(struct net_device *dev);
 681 int ipoib_register_debugfs(void);
 682 void ipoib_unregister_debugfs(void);
 683 #else
 684 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 685 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 686 static inline int ipoib_register_debugfs(void) { return 0; }
 687 static inline void ipoib_unregister_debugfs(void) { }
 688 #endif
 689
 690 #define ipoib_printk(level, priv, format, arg...)       \
 691         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 692 #define ipoib_warn(priv, format, arg...)                \
 693         ipoib_printk(KERN_WARNING, priv, format , ## arg)
 694
 695 extern int ipoib_sendq_size;
 696 extern int ipoib_recvq_size;
 697
 698 extern struct ib_sa_client ipoib_sa_client;
 699
 700 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 701 extern int ipoib_debug_level;
 702
 703 #define ipoib_dbg(priv, format, arg...)                 \
 704         do {                                            \
 705                 if (ipoib_debug_level > 0)                      \
 706                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 707         } while (0)
 708 #define ipoib_dbg_mcast(priv, format, arg...)           \
 709         do {                                            \
 710                 if (mcast_debug_level > 0)              \
 711                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 712         } while (0)
 713 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 714 #define ipoib_dbg(priv, format, arg...)                 \
 715         do { (void) (priv); } while (0)
 716 #define ipoib_dbg_mcast(priv, format, arg...)           \
 717         do { (void) (priv); } while (0)
 718 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 719
 720 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 721 #define ipoib_dbg_data(priv, format, arg...)            \
 722         do {                                            \
 723                 if (data_debug_level > 0)               \
 724                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 725         } while (0)
 726 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 727 #define ipoib_dbg_data(priv, format, arg...)            \
 728         do { (void) (priv); } while (0)
 729 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 730
 731
 732 #define IPOIB_GID_FMT           "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:" \
 733                                 "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x"
 734
 735 #define IPOIB_GID_RAW_ARG(gid)  ((u8 *)(gid))[0], \
 736                                 ((u8 *)(gid))[1], \
 737                                 ((u8 *)(gid))[2], \
 738                                 ((u8 *)(gid))[3], \
 739                                 ((u8 *)(gid))[4], \
 740                                 ((u8 *)(gid))[5], \
 741                                 ((u8 *)(gid))[6], \
 742                                 ((u8 *)(gid))[7], \
 743                                 ((u8 *)(gid))[8], \
 744                                 ((u8 *)(gid))[9], \
 745                                 ((u8 *)(gid))[10],\
 746                                 ((u8 *)(gid))[11],\
 747                                 ((u8 *)(gid))[12],\
 748                                 ((u8 *)(gid))[13],\
 749                                 ((u8 *)(gid))[14],\
 750                                 ((u8 *)(gid))[15]
 751
 752 #define IPOIB_GID_ARG(gid)      IPOIB_GID_RAW_ARG((gid).raw)
 753
 754 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 755
 756 #endif /* _IPOIB_H */