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