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 #include <net/sch_generic.h>
  48
  49 #include <linux/atomic.h>
  50
  51 #include <rdma/ib_verbs.h>
  52 #include <rdma/ib_pack.h>
  53 #include <rdma/ib_sa.h>
  54 #include <linux/sched.h>
  55
  56 /* constants */
  57
  58 enum ipoib_flush_level {
  59         IPOIB_FLUSH_LIGHT,
  60         IPOIB_FLUSH_NORMAL,
  61         IPOIB_FLUSH_HEAVY
  62 };
  63
  64 enum {
  65         IPOIB_ENCAP_LEN           = 4,
  66
  67         IPOIB_UD_HEAD_SIZE        = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
  68         IPOIB_UD_RX_SG            = 2, /* max buffer needed for 4K mtu */
  69
  70         IPOIB_CM_MTU              = 0x10000 - 0x10, /* padding to align header to 16 */
  71         IPOIB_CM_BUF_SIZE         = IPOIB_CM_MTU  + IPOIB_ENCAP_LEN,
  72         IPOIB_CM_HEAD_SIZE        = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
  73         IPOIB_CM_RX_SG            = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
  74         IPOIB_RX_RING_SIZE        = 256,
  75         IPOIB_TX_RING_SIZE        = 128,
  76         IPOIB_MAX_QUEUE_SIZE      = 8192,
  77         IPOIB_MIN_QUEUE_SIZE      = 2,
  78         IPOIB_CM_MAX_CONN_QP      = 4096,
  79
  80         IPOIB_NUM_WC              = 4,
  81
  82         IPOIB_MAX_PATH_REC_QUEUE  = 3,
  83         IPOIB_MAX_MCAST_QUEUE     = 3,
  84
  85         IPOIB_FLAG_OPER_UP        = 0,
  86         IPOIB_FLAG_INITIALIZED    = 1,
  87         IPOIB_FLAG_ADMIN_UP       = 2,
  88         IPOIB_PKEY_ASSIGNED       = 3,
  89         IPOIB_PKEY_STOP           = 4,
  90         IPOIB_FLAG_SUBINTERFACE   = 5,
  91         IPOIB_MCAST_RUN           = 6,
  92         IPOIB_STOP_REAPER         = 7,
  93         IPOIB_FLAG_ADMIN_CM       = 9,
  94         IPOIB_FLAG_UMCAST         = 10,
  95         IPOIB_STOP_NEIGH_GC       = 11,
  96         IPOIB_NEIGH_TBL_FLUSH     = 12,
  97
  98         IPOIB_MAX_BACKOFF_SECONDS = 16,
  99
 100         IPOIB_MCAST_FLAG_FOUND    = 0,  /* used in set_multicast_list */
 101         IPOIB_MCAST_FLAG_SENDONLY = 1,
 102         IPOIB_MCAST_FLAG_BUSY     = 2,  /* joining or already joined */
 103         IPOIB_MCAST_FLAG_ATTACHED = 3,
 104
 105         MAX_SEND_CQE              = 16,
 106         IPOIB_CM_COPYBREAK        = 256,
 107 };
 108
 109 #define IPOIB_OP_RECV   (1ul << 31)
 110 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 111 #define IPOIB_OP_CM     (1ul << 30)
 112 #else
 113 #define IPOIB_OP_CM     (0)
 114 #endif
 115
 116 /* structs */
 117
 118 struct ipoib_header {
 119         __be16  proto;
 120         u16     reserved;
 121 };
 122
 123 struct ipoib_cb {
 124         struct qdisc_skb_cb     qdisc_cb;
 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_neigh_hash {
 266         struct ipoib_neigh __rcu      **buckets;
 267         struct rcu_head                 rcu;
 268         u32                             mask;
 269         u32                             size;
 270 };
 271
 272 struct ipoib_neigh_table {
 273         struct ipoib_neigh_hash __rcu  *htbl;
 274         rwlock_t                        rwlock;
 275         atomic_t                        entries;
 276         struct completion               flushed;
 277 };
 278
 279 /*
 280  * Device private locking: network stack tx_lock protects members used
 281  * in TX fast path, lock protects everything else.  lock nests inside
 282  * of tx_lock (ie tx_lock must be acquired first if needed).
 283  */
 284 struct ipoib_dev_priv {
 285         spinlock_t lock;
 286
 287         struct net_device *dev;
 288
 289         struct napi_struct napi;
 290
 291         unsigned long flags;
 292
 293         struct mutex vlan_mutex;
 294
 295         struct rb_root  path_tree;
 296         struct list_head path_list;
 297
 298         struct ipoib_neigh_table ntbl;
 299
 300         struct ipoib_mcast *broadcast;
 301         struct list_head multicast_list;
 302         struct rb_root multicast_tree;
 303
 304         struct delayed_work pkey_poll_task;
 305         struct delayed_work mcast_task;
 306         struct work_struct carrier_on_task;
 307         struct work_struct flush_light;
 308         struct work_struct flush_normal;
 309         struct work_struct flush_heavy;
 310         struct work_struct restart_task;
 311         struct delayed_work ah_reap_task;
 312         struct delayed_work neigh_reap_task;
 313         struct ib_device *ca;
 314         u8                port;
 315         u16               pkey;
 316         u16               pkey_index;
 317         struct ib_pd     *pd;
 318         struct ib_mr     *mr;
 319         struct ib_cq     *recv_cq;
 320         struct ib_cq     *send_cq;
 321         struct ib_qp     *qp;
 322         u32               qkey;
 323
 324         union ib_gid local_gid;
 325         u16          local_lid;
 326
 327         unsigned int admin_mtu;
 328         unsigned int mcast_mtu;
 329         unsigned int max_ib_mtu;
 330
 331         struct ipoib_rx_buf *rx_ring;
 332
 333         struct ipoib_tx_buf *tx_ring;
 334         unsigned             tx_head;
 335         unsigned             tx_tail;
 336         struct ib_sge        tx_sge[MAX_SKB_FRAGS + 1];
 337         struct ib_send_wr    tx_wr;
 338         unsigned             tx_outstanding;
 339         struct ib_wc         send_wc[MAX_SEND_CQE];
 340
 341         struct ib_recv_wr    rx_wr;
 342         struct ib_sge        rx_sge[IPOIB_UD_RX_SG];
 343
 344         struct ib_wc ibwc[IPOIB_NUM_WC];
 345
 346         struct list_head dead_ahs;
 347
 348         struct ib_event_handler event_handler;
 349
 350         struct net_device *parent;
 351         struct list_head child_intfs;
 352         struct list_head list;
 353
 354 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 355         struct ipoib_cm_dev_priv cm;
 356 #endif
 357
 358 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 359         struct list_head fs_list;
 360         struct dentry *mcg_dentry;
 361         struct dentry *path_dentry;
 362 #endif
 363         int     hca_caps;
 364         struct ipoib_ethtool_st ethtool;
 365         struct timer_list poll_timer;
 366 };
 367
 368 struct ipoib_ah {
 369         struct net_device *dev;
 370         struct ib_ah      *ah;
 371         struct list_head   list;
 372         struct kref        ref;
 373         unsigned           last_send;
 374 };
 375
 376 struct ipoib_path {
 377         struct net_device    *dev;
 378         struct ib_sa_path_rec pathrec;
 379         struct ipoib_ah      *ah;
 380         struct sk_buff_head   queue;
 381
 382         struct list_head      neigh_list;
 383
 384         int                   query_id;
 385         struct ib_sa_query   *query;
 386         struct completion     done;
 387
 388         struct rb_node        rb_node;
 389         struct list_head      list;
 390         int                   valid;
 391 };
 392
 393 struct ipoib_neigh {
 394         struct ipoib_ah    *ah;
 395 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 396         struct ipoib_cm_tx *cm;
 397 #endif
 398         u8     daddr[INFINIBAND_ALEN];
 399         struct sk_buff_head queue;
 400
 401         struct net_device *dev;
 402
 403         struct list_head    list;
 404         struct ipoib_neigh __rcu *hnext;
 405         struct rcu_head     rcu;
 406         atomic_t            refcnt;
 407         unsigned long       alive;
 408 };
 409
 410 #define IPOIB_UD_MTU(ib_mtu)            (ib_mtu - IPOIB_ENCAP_LEN)
 411 #define IPOIB_UD_BUF_SIZE(ib_mtu)       (ib_mtu + IB_GRH_BYTES)
 412
 413 static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
 414 {
 415         return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
 416 }
 417
 418 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
 419 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
 420 {
 421         if (atomic_dec_and_test(&neigh->refcnt))
 422                 ipoib_neigh_dtor(neigh);
 423 }
 424 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
 425 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
 426                                       struct net_device *dev);
 427 void ipoib_neigh_free(struct ipoib_neigh *neigh);
 428 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
 429
 430 extern struct workqueue_struct *ipoib_workqueue;
 431
 432 /* functions */
 433
 434 int ipoib_poll(struct napi_struct *napi, int budget);
 435 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
 436 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
 437
 438 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 439                                  struct ib_pd *pd, struct ib_ah_attr *attr);
 440 void ipoib_free_ah(struct kref *kref);
 441 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 442 {
 443         kref_put(&ah->ref, ipoib_free_ah);
 444 }
 445 int ipoib_open(struct net_device *dev);
 446 int ipoib_add_pkey_attr(struct net_device *dev);
 447 int ipoib_add_umcast_attr(struct net_device *dev);
 448
 449 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 450                 struct ipoib_ah *address, u32 qpn);
 451 void ipoib_reap_ah(struct work_struct *work);
 452
 453 void ipoib_mark_paths_invalid(struct net_device *dev);
 454 void ipoib_flush_paths(struct net_device *dev);
 455 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
 456
 457 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 458 void ipoib_ib_dev_flush_light(struct work_struct *work);
 459 void ipoib_ib_dev_flush_normal(struct work_struct *work);
 460 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
 461 void ipoib_pkey_event(struct work_struct *work);
 462 void ipoib_ib_dev_cleanup(struct net_device *dev);
 463
 464 int ipoib_ib_dev_open(struct net_device *dev);
 465 int ipoib_ib_dev_up(struct net_device *dev);
 466 int ipoib_ib_dev_down(struct net_device *dev, int flush);
 467 int ipoib_ib_dev_stop(struct net_device *dev, int flush);
 468
 469 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 470 void ipoib_dev_cleanup(struct net_device *dev);
 471
 472 void ipoib_mcast_join_task(struct work_struct *work);
 473 void ipoib_mcast_carrier_on_task(struct work_struct *work);
 474 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
 475
 476 void ipoib_mcast_restart_task(struct work_struct *work);
 477 int ipoib_mcast_start_thread(struct net_device *dev);
 478 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
 479
 480 void ipoib_mcast_dev_down(struct net_device *dev);
 481 void ipoib_mcast_dev_flush(struct net_device *dev);
 482
 483 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 484 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 485 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 486 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 487                                   union ib_gid *gid,
 488                                   unsigned long *created,
 489                                   unsigned int *queuelen,
 490                                   unsigned int *complete,
 491                                   unsigned int *send_only);
 492
 493 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 494 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 495 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 496                           struct ipoib_path *path);
 497 #endif
 498
 499 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
 500                        union ib_gid *mgid, int set_qkey);
 501
 502 int ipoib_init_qp(struct net_device *dev);
 503 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 504 void ipoib_transport_dev_cleanup(struct net_device *dev);
 505
 506 void ipoib_event(struct ib_event_handler *handler,
 507                  struct ib_event *record);
 508
 509 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 510 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 511
 512 void ipoib_pkey_poll(struct work_struct *work);
 513 int ipoib_pkey_dev_delay_open(struct net_device *dev);
 514 void ipoib_drain_cq(struct net_device *dev);
 515
 516 void ipoib_set_ethtool_ops(struct net_device *dev);
 517 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
 518
 519 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 520
 521 #define IPOIB_FLAGS_RC          0x80
 522 #define IPOIB_FLAGS_UC          0x40
 523
 524 /* We don't support UC connections at the moment */
 525 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 526
 527 extern int ipoib_max_conn_qp;
 528
 529 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 530 {
 531         struct ipoib_dev_priv *priv = netdev_priv(dev);
 532         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 533                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 534 }
 535
 536 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 537 {
 538         struct ipoib_dev_priv *priv = netdev_priv(dev);
 539         return IPOIB_CM_SUPPORTED(hwaddr) &&
 540                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 541 }
 542
 543 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 544
 545 {
 546         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 547 }
 548
 549 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 550 {
 551         return neigh->cm;
 552 }
 553
 554 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 555 {
 556         neigh->cm = tx;
 557 }
 558
 559 static inline int ipoib_cm_has_srq(struct net_device *dev)
 560 {
 561         struct ipoib_dev_priv *priv = netdev_priv(dev);
 562         return !!priv->cm.srq;
 563 }
 564
 565 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 566 {
 567         struct ipoib_dev_priv *priv = netdev_priv(dev);
 568         return priv->cm.max_cm_mtu;
 569 }
 570
 571 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 572 int ipoib_cm_dev_open(struct net_device *dev);
 573 void ipoib_cm_dev_stop(struct net_device *dev);
 574 int ipoib_cm_dev_init(struct net_device *dev);
 575 int ipoib_cm_add_mode_attr(struct net_device *dev);
 576 void ipoib_cm_dev_cleanup(struct net_device *dev);
 577 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 578                                     struct ipoib_neigh *neigh);
 579 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 580 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 581                            unsigned int mtu);
 582 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 583 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
 584 #else
 585
 586 struct ipoib_cm_tx;
 587
 588 #define ipoib_max_conn_qp 0
 589
 590 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 591 {
 592         return 0;
 593 }
 594 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 595
 596 {
 597         return 0;
 598 }
 599
 600 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 601
 602 {
 603         return 0;
 604 }
 605
 606 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 607 {
 608         return NULL;
 609 }
 610
 611 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 612 {
 613 }
 614
 615 static inline int ipoib_cm_has_srq(struct net_device *dev)
 616 {
 617         return 0;
 618 }
 619
 620 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 621 {
 622         return 0;
 623 }
 624
 625 static inline
 626 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 627 {
 628         return;
 629 }
 630
 631 static inline
 632 int ipoib_cm_dev_open(struct net_device *dev)
 633 {
 634         return 0;
 635 }
 636
 637 static inline
 638 void ipoib_cm_dev_stop(struct net_device *dev)
 639 {
 640         return;
 641 }
 642
 643 static inline
 644 int ipoib_cm_dev_init(struct net_device *dev)
 645 {
 646         return -ENOSYS;
 647 }
 648
 649 static inline
 650 void ipoib_cm_dev_cleanup(struct net_device *dev)
 651 {
 652         return;
 653 }
 654
 655 static inline
 656 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 657                                     struct ipoib_neigh *neigh)
 658 {
 659         return NULL;
 660 }
 661
 662 static inline
 663 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 664 {
 665         return;
 666 }
 667
 668 static inline
 669 int ipoib_cm_add_mode_attr(struct net_device *dev)
 670 {
 671         return 0;
 672 }
 673
 674 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 675                                          unsigned int mtu)
 676 {
 677         dev_kfree_skb_any(skb);
 678 }
 679
 680 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 681 {
 682 }
 683
 684 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 685 {
 686 }
 687 #endif
 688
 689 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 690 void ipoib_create_debug_files(struct net_device *dev);
 691 void ipoib_delete_debug_files(struct net_device *dev);
 692 int ipoib_register_debugfs(void);
 693 void ipoib_unregister_debugfs(void);
 694 #else
 695 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 696 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 697 static inline int ipoib_register_debugfs(void) { return 0; }
 698 static inline void ipoib_unregister_debugfs(void) { }
 699 #endif
 700
 701 #define ipoib_printk(level, priv, format, arg...)       \
 702         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 703 #define ipoib_warn(priv, format, arg...)                \
 704         ipoib_printk(KERN_WARNING, priv, format , ## arg)
 705
 706 extern int ipoib_sendq_size;
 707 extern int ipoib_recvq_size;
 708
 709 extern struct ib_sa_client ipoib_sa_client;
 710
 711 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 712 extern int ipoib_debug_level;
 713
 714 #define ipoib_dbg(priv, format, arg...)                 \
 715         do {                                            \
 716                 if (ipoib_debug_level > 0)                      \
 717                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 718         } while (0)
 719 #define ipoib_dbg_mcast(priv, format, arg...)           \
 720         do {                                            \
 721                 if (mcast_debug_level > 0)              \
 722                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 723         } while (0)
 724 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 725 #define ipoib_dbg(priv, format, arg...)                 \
 726         do { (void) (priv); } while (0)
 727 #define ipoib_dbg_mcast(priv, format, arg...)           \
 728         do { (void) (priv); } while (0)
 729 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 730
 731 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 732 #define ipoib_dbg_data(priv, format, arg...)            \
 733         do {                                            \
 734                 if (data_debug_level > 0)               \
 735                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 736         } while (0)
 737 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 738 #define ipoib_dbg_data(priv, format, arg...)            \
 739         do { (void) (priv); } while (0)
 740 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 741
 742 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 743
 744 #endif /* _IPOIB_H */