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         IPOIB_MCAST_JOIN_STARTED  = 4,
 105
 106         MAX_SEND_CQE              = 16,
 107         IPOIB_CM_COPYBREAK        = 256,
 108
 109         IPOIB_NON_CHILD           = 0,
 110         IPOIB_LEGACY_CHILD        = 1,
 111         IPOIB_RTNL_CHILD          = 2,
 112 };
 113
 114 #define IPOIB_OP_RECV   (1ul << 31)
 115 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 116 #define IPOIB_OP_CM     (1ul << 30)
 117 #else
 118 #define IPOIB_OP_CM     (0)
 119 #endif
 120
 121 #define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
 122
 123 /* structs */
 124
 125 struct ipoib_header {
 126         __be16  proto;
 127         u16     reserved;
 128 };
 129
 130 struct ipoib_cb {
 131         struct qdisc_skb_cb     qdisc_cb;
 132         u8                      hwaddr[INFINIBAND_ALEN];
 133 };
 134
 135 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
 136 struct ipoib_mcast {
 137         struct ib_sa_mcmember_rec mcmember;
 138         struct ib_sa_multicast   *mc;
 139         struct ipoib_ah          *ah;
 140
 141         struct rb_node    rb_node;
 142         struct list_head  list;
 143
 144         unsigned long created;
 145         unsigned long backoff;
 146
 147         unsigned long flags;
 148         unsigned char logcount;
 149
 150         struct list_head  neigh_list;
 151
 152         struct sk_buff_head pkt_queue;
 153
 154         struct net_device *dev;
 155         struct completion done;
 156 };
 157
 158 struct ipoib_rx_buf {
 159         struct sk_buff *skb;
 160         u64             mapping[IPOIB_UD_RX_SG];
 161 };
 162
 163 struct ipoib_tx_buf {
 164         struct sk_buff *skb;
 165         u64             mapping[MAX_SKB_FRAGS + 1];
 166 };
 167
 168 struct ipoib_cm_tx_buf {
 169         struct sk_buff *skb;
 170         u64             mapping;
 171 };
 172
 173 struct ib_cm_id;
 174
 175 struct ipoib_cm_data {
 176         __be32 qpn; /* High byte MUST be ignored on receive */
 177         __be32 mtu;
 178 };
 179
 180 /*
 181  * Quoting 10.3.1 Queue Pair and EE Context States:
 182  *
 183  * Note, for QPs that are associated with an SRQ, the Consumer should take the
 184  * QP through the Error State before invoking a Destroy QP or a Modify QP to the
 185  * Reset State.  The Consumer may invoke the Destroy QP without first performing
 186  * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
 187  * Last WQE Reached Event. However, if the Consumer does not wait for the
 188  * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
 189  * leakage may occur. Therefore, it is good programming practice to tear down a
 190  * QP that is associated with an SRQ by using the following process:
 191  *
 192  * - Put the QP in the Error State
 193  * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
 194  * - either:
 195  *       drain the CQ by invoking the Poll CQ verb and either wait for CQ
 196  *       to be empty or the number of Poll CQ operations has exceeded
 197  *       CQ capacity size;
 198  * - or
 199  *       post another WR that completes on the same CQ and wait for this
 200  *       WR to return as a WC;
 201  * - and then invoke a Destroy QP or Reset QP.
 202  *
 203  * We use the second option and wait for a completion on the
 204  * same CQ before destroying QPs attached to our SRQ.
 205  */
 206
 207 enum ipoib_cm_state {
 208         IPOIB_CM_RX_LIVE,
 209         IPOIB_CM_RX_ERROR, /* Ignored by stale task */
 210         IPOIB_CM_RX_FLUSH  /* Last WQE Reached event observed */
 211 };
 212
 213 struct ipoib_cm_rx {
 214         struct ib_cm_id        *id;
 215         struct ib_qp           *qp;
 216         struct ipoib_cm_rx_buf *rx_ring;
 217         struct list_head        list;
 218         struct net_device      *dev;
 219         unsigned long           jiffies;
 220         enum ipoib_cm_state     state;
 221         int                     recv_count;
 222 };
 223
 224 struct ipoib_cm_tx {
 225         struct ib_cm_id     *id;
 226         struct ib_qp        *qp;
 227         struct list_head     list;
 228         struct net_device   *dev;
 229         struct ipoib_neigh  *neigh;
 230         struct ipoib_path   *path;
 231         struct ipoib_cm_tx_buf *tx_ring;
 232         unsigned             tx_head;
 233         unsigned             tx_tail;
 234         unsigned long        flags;
 235         u32                  mtu;
 236 };
 237
 238 struct ipoib_cm_rx_buf {
 239         struct sk_buff *skb;
 240         u64 mapping[IPOIB_CM_RX_SG];
 241 };
 242
 243 struct ipoib_cm_dev_priv {
 244         struct ib_srq          *srq;
 245         struct ipoib_cm_rx_buf *srq_ring;
 246         struct ib_cm_id        *id;
 247         struct list_head        passive_ids;   /* state: LIVE */
 248         struct list_head        rx_error_list; /* state: ERROR */
 249         struct list_head        rx_flush_list; /* state: FLUSH, drain not started */
 250         struct list_head        rx_drain_list; /* state: FLUSH, drain started */
 251         struct list_head        rx_reap_list;  /* state: FLUSH, drain done */
 252         struct work_struct      start_task;
 253         struct work_struct      reap_task;
 254         struct work_struct      skb_task;
 255         struct work_struct      rx_reap_task;
 256         struct delayed_work     stale_task;
 257         struct sk_buff_head     skb_queue;
 258         struct list_head        start_list;
 259         struct list_head        reap_list;
 260         struct ib_wc            ibwc[IPOIB_NUM_WC];
 261         struct ib_sge           rx_sge[IPOIB_CM_RX_SG];
 262         struct ib_recv_wr       rx_wr;
 263         int                     nonsrq_conn_qp;
 264         int                     max_cm_mtu;
 265         int                     num_frags;
 266 };
 267
 268 struct ipoib_ethtool_st {
 269         u16     coalesce_usecs;
 270         u16     max_coalesced_frames;
 271 };
 272
 273 struct ipoib_neigh_table;
 274
 275 struct ipoib_neigh_hash {
 276         struct ipoib_neigh_table       *ntbl;
 277         struct ipoib_neigh __rcu      **buckets;
 278         struct rcu_head                 rcu;
 279         u32                             mask;
 280         u32                             size;
 281 };
 282
 283 struct ipoib_neigh_table {
 284         struct ipoib_neigh_hash __rcu  *htbl;
 285         atomic_t                        entries;
 286         struct completion               flushed;
 287         struct completion               deleted;
 288 };
 289
 290 /*
 291  * Device private locking: network stack tx_lock protects members used
 292  * in TX fast path, lock protects everything else.  lock nests inside
 293  * of tx_lock (ie tx_lock must be acquired first if needed).
 294  */
 295 struct ipoib_dev_priv {
 296         spinlock_t lock;
 297
 298         struct net_device *dev;
 299
 300         struct napi_struct napi;
 301
 302         unsigned long flags;
 303
 304         struct rw_semaphore vlan_rwsem;
 305
 306         struct rb_root  path_tree;
 307         struct list_head path_list;
 308
 309         struct ipoib_neigh_table ntbl;
 310
 311         struct ipoib_mcast *broadcast;
 312         struct list_head multicast_list;
 313         struct rb_root multicast_tree;
 314
 315         struct delayed_work pkey_poll_task;
 316         struct delayed_work mcast_task;
 317         struct work_struct carrier_on_task;
 318         struct work_struct flush_light;
 319         struct work_struct flush_normal;
 320         struct work_struct flush_heavy;
 321         struct work_struct restart_task;
 322         struct delayed_work ah_reap_task;
 323         struct delayed_work neigh_reap_task;
 324         struct ib_device *ca;
 325         u8                port;
 326         u16               pkey;
 327         u16               pkey_index;
 328         struct ib_pd     *pd;
 329         struct ib_mr     *mr;
 330         struct ib_cq     *recv_cq;
 331         struct ib_cq     *send_cq;
 332         struct ib_qp     *qp;
 333         u32               qkey;
 334
 335         union ib_gid local_gid;
 336         u16          local_lid;
 337
 338         unsigned int admin_mtu;
 339         unsigned int mcast_mtu;
 340         unsigned int max_ib_mtu;
 341
 342         struct ipoib_rx_buf *rx_ring;
 343
 344         struct ipoib_tx_buf *tx_ring;
 345         unsigned             tx_head;
 346         unsigned             tx_tail;
 347         struct ib_sge        tx_sge[MAX_SKB_FRAGS + 1];
 348         struct ib_send_wr    tx_wr;
 349         unsigned             tx_outstanding;
 350         struct ib_wc         send_wc[MAX_SEND_CQE];
 351
 352         struct ib_recv_wr    rx_wr;
 353         struct ib_sge        rx_sge[IPOIB_UD_RX_SG];
 354
 355         struct ib_wc ibwc[IPOIB_NUM_WC];
 356
 357         struct list_head dead_ahs;
 358
 359         struct ib_event_handler event_handler;
 360
 361         struct net_device *parent;
 362         struct list_head child_intfs;
 363         struct list_head list;
 364         int    child_type;
 365
 366 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 367         struct ipoib_cm_dev_priv cm;
 368 #endif
 369
 370 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 371         struct list_head fs_list;
 372         struct dentry *mcg_dentry;
 373         struct dentry *path_dentry;
 374 #endif
 375         int     hca_caps;
 376         struct ipoib_ethtool_st ethtool;
 377         struct timer_list poll_timer;
 378 };
 379
 380 struct ipoib_ah {
 381         struct net_device *dev;
 382         struct ib_ah      *ah;
 383         struct list_head   list;
 384         struct kref        ref;
 385         unsigned           last_send;
 386 };
 387
 388 struct ipoib_path {
 389         struct net_device    *dev;
 390         struct ib_sa_path_rec pathrec;
 391         struct ipoib_ah      *ah;
 392         struct sk_buff_head   queue;
 393
 394         struct list_head      neigh_list;
 395
 396         int                   query_id;
 397         struct ib_sa_query   *query;
 398         struct completion     done;
 399
 400         struct rb_node        rb_node;
 401         struct list_head      list;
 402         int                   valid;
 403 };
 404
 405 struct ipoib_neigh {
 406         struct ipoib_ah    *ah;
 407 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 408         struct ipoib_cm_tx *cm;
 409 #endif
 410         u8     daddr[INFINIBAND_ALEN];
 411         struct sk_buff_head queue;
 412
 413         struct net_device *dev;
 414
 415         struct list_head    list;
 416         struct ipoib_neigh __rcu *hnext;
 417         struct rcu_head     rcu;
 418         atomic_t            refcnt;
 419         unsigned long       alive;
 420 };
 421
 422 #define IPOIB_UD_MTU(ib_mtu)            (ib_mtu - IPOIB_ENCAP_LEN)
 423 #define IPOIB_UD_BUF_SIZE(ib_mtu)       (ib_mtu + IB_GRH_BYTES)
 424
 425 static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
 426 {
 427         return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
 428 }
 429
 430 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
 431 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
 432 {
 433         if (atomic_dec_and_test(&neigh->refcnt))
 434                 ipoib_neigh_dtor(neigh);
 435 }
 436 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
 437 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
 438                                       struct net_device *dev);
 439 void ipoib_neigh_free(struct ipoib_neigh *neigh);
 440 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
 441
 442 extern struct workqueue_struct *ipoib_workqueue;
 443
 444 /* functions */
 445
 446 int ipoib_poll(struct napi_struct *napi, int budget);
 447 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
 448 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
 449
 450 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 451                                  struct ib_pd *pd, struct ib_ah_attr *attr);
 452 void ipoib_free_ah(struct kref *kref);
 453 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 454 {
 455         kref_put(&ah->ref, ipoib_free_ah);
 456 }
 457 int ipoib_open(struct net_device *dev);
 458 int ipoib_add_pkey_attr(struct net_device *dev);
 459 int ipoib_add_umcast_attr(struct net_device *dev);
 460
 461 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 462                 struct ipoib_ah *address, u32 qpn);
 463 void ipoib_reap_ah(struct work_struct *work);
 464
 465 void ipoib_mark_paths_invalid(struct net_device *dev);
 466 void ipoib_flush_paths(struct net_device *dev);
 467 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
 468
 469 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 470 void ipoib_ib_dev_flush_light(struct work_struct *work);
 471 void ipoib_ib_dev_flush_normal(struct work_struct *work);
 472 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
 473 void ipoib_pkey_event(struct work_struct *work);
 474 void ipoib_ib_dev_cleanup(struct net_device *dev);
 475
 476 int ipoib_ib_dev_open(struct net_device *dev);
 477 int ipoib_ib_dev_up(struct net_device *dev);
 478 int ipoib_ib_dev_down(struct net_device *dev, int flush);
 479 int ipoib_ib_dev_stop(struct net_device *dev, int flush);
 480
 481 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 482 void ipoib_dev_cleanup(struct net_device *dev);
 483
 484 void ipoib_mcast_join_task(struct work_struct *work);
 485 void ipoib_mcast_carrier_on_task(struct work_struct *work);
 486 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
 487
 488 void ipoib_mcast_restart_task(struct work_struct *work);
 489 int ipoib_mcast_start_thread(struct net_device *dev);
 490 int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
 491
 492 void ipoib_mcast_dev_down(struct net_device *dev);
 493 void ipoib_mcast_dev_flush(struct net_device *dev);
 494
 495 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 496 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 497 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 498 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 499                                   union ib_gid *gid,
 500                                   unsigned long *created,
 501                                   unsigned int *queuelen,
 502                                   unsigned int *complete,
 503                                   unsigned int *send_only);
 504
 505 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 506 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 507 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 508                           struct ipoib_path *path);
 509 #endif
 510
 511 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
 512                        union ib_gid *mgid, int set_qkey);
 513
 514 int ipoib_init_qp(struct net_device *dev);
 515 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 516 void ipoib_transport_dev_cleanup(struct net_device *dev);
 517
 518 void ipoib_event(struct ib_event_handler *handler,
 519                  struct ib_event *record);
 520
 521 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 522 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 523
 524 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
 525                      u16 pkey, int child_type);
 526
 527 int  __init ipoib_netlink_init(void);
 528 void __exit ipoib_netlink_fini(void);
 529
 530 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
 531 int  ipoib_set_mode(struct net_device *dev, const char *buf);
 532
 533 void ipoib_setup(struct net_device *dev);
 534
 535 void ipoib_pkey_poll(struct work_struct *work);
 536 int ipoib_pkey_dev_delay_open(struct net_device *dev);
 537 void ipoib_drain_cq(struct net_device *dev);
 538
 539 void ipoib_set_ethtool_ops(struct net_device *dev);
 540 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
 541
 542 #define IPOIB_FLAGS_RC          0x80
 543 #define IPOIB_FLAGS_UC          0x40
 544
 545 /* We don't support UC connections at the moment */
 546 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 547
 548 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 549
 550 extern int ipoib_max_conn_qp;
 551
 552 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 553 {
 554         struct ipoib_dev_priv *priv = netdev_priv(dev);
 555         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 556                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 557 }
 558
 559 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 560 {
 561         struct ipoib_dev_priv *priv = netdev_priv(dev);
 562         return IPOIB_CM_SUPPORTED(hwaddr) &&
 563                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 564 }
 565
 566 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 567
 568 {
 569         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 570 }
 571
 572 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 573 {
 574         return neigh->cm;
 575 }
 576
 577 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 578 {
 579         neigh->cm = tx;
 580 }
 581
 582 static inline int ipoib_cm_has_srq(struct net_device *dev)
 583 {
 584         struct ipoib_dev_priv *priv = netdev_priv(dev);
 585         return !!priv->cm.srq;
 586 }
 587
 588 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 589 {
 590         struct ipoib_dev_priv *priv = netdev_priv(dev);
 591         return priv->cm.max_cm_mtu;
 592 }
 593
 594 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 595 int ipoib_cm_dev_open(struct net_device *dev);
 596 void ipoib_cm_dev_stop(struct net_device *dev);
 597 int ipoib_cm_dev_init(struct net_device *dev);
 598 int ipoib_cm_add_mode_attr(struct net_device *dev);
 599 void ipoib_cm_dev_cleanup(struct net_device *dev);
 600 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 601                                     struct ipoib_neigh *neigh);
 602 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 603 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 604                            unsigned int mtu);
 605 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 606 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
 607 #else
 608
 609 struct ipoib_cm_tx;
 610
 611 #define ipoib_max_conn_qp 0
 612
 613 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 614 {
 615         return 0;
 616 }
 617 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 618
 619 {
 620         return 0;
 621 }
 622
 623 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 624
 625 {
 626         return 0;
 627 }
 628
 629 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 630 {
 631         return NULL;
 632 }
 633
 634 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 635 {
 636 }
 637
 638 static inline int ipoib_cm_has_srq(struct net_device *dev)
 639 {
 640         return 0;
 641 }
 642
 643 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 644 {
 645         return 0;
 646 }
 647
 648 static inline
 649 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 650 {
 651         return;
 652 }
 653
 654 static inline
 655 int ipoib_cm_dev_open(struct net_device *dev)
 656 {
 657         return 0;
 658 }
 659
 660 static inline
 661 void ipoib_cm_dev_stop(struct net_device *dev)
 662 {
 663         return;
 664 }
 665
 666 static inline
 667 int ipoib_cm_dev_init(struct net_device *dev)
 668 {
 669         return -ENOSYS;
 670 }
 671
 672 static inline
 673 void ipoib_cm_dev_cleanup(struct net_device *dev)
 674 {
 675         return;
 676 }
 677
 678 static inline
 679 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 680                                     struct ipoib_neigh *neigh)
 681 {
 682         return NULL;
 683 }
 684
 685 static inline
 686 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 687 {
 688         return;
 689 }
 690
 691 static inline
 692 int ipoib_cm_add_mode_attr(struct net_device *dev)
 693 {
 694         return 0;
 695 }
 696
 697 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 698                                          unsigned int mtu)
 699 {
 700         dev_kfree_skb_any(skb);
 701 }
 702
 703 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 704 {
 705 }
 706
 707 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 708 {
 709 }
 710 #endif
 711
 712 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 713 void ipoib_create_debug_files(struct net_device *dev);
 714 void ipoib_delete_debug_files(struct net_device *dev);
 715 int ipoib_register_debugfs(void);
 716 void ipoib_unregister_debugfs(void);
 717 #else
 718 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 719 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 720 static inline int ipoib_register_debugfs(void) { return 0; }
 721 static inline void ipoib_unregister_debugfs(void) { }
 722 #endif
 723
 724 #define ipoib_printk(level, priv, format, arg...)       \
 725         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 726 #define ipoib_warn(priv, format, arg...)                \
 727         ipoib_printk(KERN_WARNING, priv, format , ## arg)
 728
 729 extern int ipoib_sendq_size;
 730 extern int ipoib_recvq_size;
 731
 732 extern struct ib_sa_client ipoib_sa_client;
 733
 734 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 735 extern int ipoib_debug_level;
 736
 737 #define ipoib_dbg(priv, format, arg...)                 \
 738         do {                                            \
 739                 if (ipoib_debug_level > 0)                      \
 740                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 741         } while (0)
 742 #define ipoib_dbg_mcast(priv, format, arg...)           \
 743         do {                                            \
 744                 if (mcast_debug_level > 0)              \
 745                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 746         } while (0)
 747 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 748 #define ipoib_dbg(priv, format, arg...)                 \
 749         do { (void) (priv); } while (0)
 750 #define ipoib_dbg_mcast(priv, format, arg...)           \
 751         do { (void) (priv); } while (0)
 752 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 753
 754 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 755 #define ipoib_dbg_data(priv, format, arg...)            \
 756         do {                                            \
 757                 if (data_debug_level > 0)               \
 758                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 759         } while (0)
 760 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 761 #define ipoib_dbg_data(priv, format, arg...)            \
 762         do { (void) (priv); } while (0)
 763 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 764
 765 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 766
 767 extern const char ipoib_driver_version[];
 768
 769 #endif /* _IPOIB_H */