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