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