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     = 64,
  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_FLAG_SUBINTERFACE   = 5,
  90         IPOIB_STOP_REAPER         = 7,
  91         IPOIB_FLAG_ADMIN_CM       = 9,
  92         IPOIB_FLAG_UMCAST         = 10,
  93         IPOIB_STOP_NEIGH_GC       = 11,
  94         IPOIB_NEIGH_TBL_FLUSH     = 12,
  95         IPOIB_FLAG_DEV_ADDR_SET   = 13,
  96         IPOIB_FLAG_DEV_ADDR_CTRL  = 14,
  97         IPOIB_FLAG_GOING_DOWN     = 15,
  98
  99         IPOIB_MAX_BACKOFF_SECONDS = 16,
 100
 101         IPOIB_MCAST_FLAG_FOUND    = 0,  /* used in set_multicast_list */
 102         IPOIB_MCAST_FLAG_SENDONLY = 1,
 103         /*
 104          * For IPOIB_MCAST_FLAG_BUSY
 105          * When set, in flight join and mcast->mc is unreliable
 106          * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or
 107          *   haven't started yet
 108          * When clear and mcast->mc is valid pointer, join was successful
 109          */
 110         IPOIB_MCAST_FLAG_BUSY     = 2,
 111         IPOIB_MCAST_FLAG_ATTACHED = 3,
 112
 113         MAX_SEND_CQE              = 16,
 114         IPOIB_CM_COPYBREAK        = 256,
 115
 116         IPOIB_NON_CHILD           = 0,
 117         IPOIB_LEGACY_CHILD        = 1,
 118         IPOIB_RTNL_CHILD          = 2,
 119 };
 120
 121 #define IPOIB_OP_RECV   (1ul << 31)
 122 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 123 #define IPOIB_OP_CM     (1ul << 30)
 124 #else
 125 #define IPOIB_OP_CM     (0)
 126 #endif
 127
 128 #define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
 129
 130 /* structs */
 131
 132 struct ipoib_header {
 133         __be16  proto;
 134         u16     reserved;
 135 };
 136
 137 struct ipoib_cb {
 138         struct qdisc_skb_cb     qdisc_cb;
 139         u8                      hwaddr[INFINIBAND_ALEN];
 140 };
 141
 142 static inline struct ipoib_cb *ipoib_skb_cb(const struct sk_buff *skb)
 143 {
 144         BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct ipoib_cb));
 145         return (struct ipoib_cb *)skb->cb;
 146 }
 147
 148 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
 149 struct ipoib_mcast {
 150         struct ib_sa_mcmember_rec mcmember;
 151         struct ib_sa_multicast   *mc;
 152         struct ipoib_ah          *ah;
 153
 154         struct rb_node    rb_node;
 155         struct list_head  list;
 156
 157         unsigned long created;
 158         unsigned long backoff;
 159         unsigned long delay_until;
 160
 161         unsigned long flags;
 162         unsigned char logcount;
 163
 164         struct list_head  neigh_list;
 165
 166         struct sk_buff_head pkt_queue;
 167
 168         struct net_device *dev;
 169         struct completion done;
 170 };
 171
 172 struct ipoib_rx_buf {
 173         struct sk_buff *skb;
 174         u64             mapping[IPOIB_UD_RX_SG];
 175 };
 176
 177 struct ipoib_tx_buf {
 178         struct sk_buff *skb;
 179         u64             mapping[MAX_SKB_FRAGS + 1];
 180 };
 181
 182 struct ipoib_cm_tx_buf {
 183         struct sk_buff *skb;
 184         u64             mapping;
 185 };
 186
 187 struct ib_cm_id;
 188
 189 struct ipoib_cm_data {
 190         __be32 qpn; /* High byte MUST be ignored on receive */
 191         __be32 mtu;
 192 };
 193
 194 /*
 195  * Quoting 10.3.1 Queue Pair and EE Context States:
 196  *
 197  * Note, for QPs that are associated with an SRQ, the Consumer should take the
 198  * QP through the Error State before invoking a Destroy QP or a Modify QP to the
 199  * Reset State.  The Consumer may invoke the Destroy QP without first performing
 200  * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
 201  * Last WQE Reached Event. However, if the Consumer does not wait for the
 202  * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
 203  * leakage may occur. Therefore, it is good programming practice to tear down a
 204  * QP that is associated with an SRQ by using the following process:
 205  *
 206  * - Put the QP in the Error State
 207  * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
 208  * - either:
 209  *       drain the CQ by invoking the Poll CQ verb and either wait for CQ
 210  *       to be empty or the number of Poll CQ operations has exceeded
 211  *       CQ capacity size;
 212  * - or
 213  *       post another WR that completes on the same CQ and wait for this
 214  *       WR to return as a WC;
 215  * - and then invoke a Destroy QP or Reset QP.
 216  *
 217  * We use the second option and wait for a completion on the
 218  * same CQ before destroying QPs attached to our SRQ.
 219  */
 220
 221 enum ipoib_cm_state {
 222         IPOIB_CM_RX_LIVE,
 223         IPOIB_CM_RX_ERROR, /* Ignored by stale task */
 224         IPOIB_CM_RX_FLUSH  /* Last WQE Reached event observed */
 225 };
 226
 227 struct ipoib_cm_rx {
 228         struct ib_cm_id        *id;
 229         struct ib_qp           *qp;
 230         struct ipoib_cm_rx_buf *rx_ring;
 231         struct list_head        list;
 232         struct net_device      *dev;
 233         unsigned long           jiffies;
 234         enum ipoib_cm_state     state;
 235         int                     recv_count;
 236 };
 237
 238 struct ipoib_cm_tx {
 239         struct ib_cm_id     *id;
 240         struct ib_qp        *qp;
 241         struct list_head     list;
 242         struct net_device   *dev;
 243         struct ipoib_neigh  *neigh;
 244         struct ipoib_path   *path;
 245         struct ipoib_tx_buf *tx_ring;
 246         unsigned             tx_head;
 247         unsigned             tx_tail;
 248         unsigned long        flags;
 249         u32                  mtu;
 250         unsigned             max_send_sge;
 251 };
 252
 253 struct ipoib_cm_rx_buf {
 254         struct sk_buff *skb;
 255         u64 mapping[IPOIB_CM_RX_SG];
 256 };
 257
 258 struct ipoib_cm_dev_priv {
 259         struct ib_srq          *srq;
 260         struct ipoib_cm_rx_buf *srq_ring;
 261         struct ib_cm_id        *id;
 262         struct list_head        passive_ids;   /* state: LIVE */
 263         struct list_head        rx_error_list; /* state: ERROR */
 264         struct list_head        rx_flush_list; /* state: FLUSH, drain not started */
 265         struct list_head        rx_drain_list; /* state: FLUSH, drain started */
 266         struct list_head        rx_reap_list;  /* state: FLUSH, drain done */
 267         struct work_struct      start_task;
 268         struct work_struct      reap_task;
 269         struct work_struct      skb_task;
 270         struct work_struct      rx_reap_task;
 271         struct delayed_work     stale_task;
 272         struct sk_buff_head     skb_queue;
 273         struct list_head        start_list;
 274         struct list_head        reap_list;
 275         struct ib_wc            ibwc[IPOIB_NUM_WC];
 276         struct ib_sge           rx_sge[IPOIB_CM_RX_SG];
 277         struct ib_recv_wr       rx_wr;
 278         int                     nonsrq_conn_qp;
 279         int                     max_cm_mtu;
 280         int                     num_frags;
 281 };
 282
 283 struct ipoib_ethtool_st {
 284         u16     coalesce_usecs;
 285         u16     max_coalesced_frames;
 286 };
 287
 288 struct ipoib_neigh_table;
 289
 290 struct ipoib_neigh_hash {
 291         struct ipoib_neigh_table       *ntbl;
 292         struct ipoib_neigh __rcu      **buckets;
 293         struct rcu_head                 rcu;
 294         u32                             mask;
 295         u32                             size;
 296 };
 297
 298 struct ipoib_neigh_table {
 299         struct ipoib_neigh_hash __rcu  *htbl;
 300         atomic_t                        entries;
 301         struct completion               flushed;
 302         struct completion               deleted;
 303 };
 304
 305 struct ipoib_qp_state_validate {
 306         struct work_struct work;
 307         struct ipoib_dev_priv   *priv;
 308 };
 309
 310 /*
 311  * Device private locking: network stack tx_lock protects members used
 312  * in TX fast path, lock protects everything else.  lock nests inside
 313  * of tx_lock (ie tx_lock must be acquired first if needed).
 314  */
 315 struct ipoib_dev_priv {
 316         spinlock_t lock;
 317
 318         struct net_device *dev;
 319
 320         struct napi_struct napi;
 321
 322         unsigned long flags;
 323
 324         struct rw_semaphore vlan_rwsem;
 325
 326         struct rb_root  path_tree;
 327         struct list_head path_list;
 328
 329         struct ipoib_neigh_table ntbl;
 330
 331         struct ipoib_mcast *broadcast;
 332         struct list_head multicast_list;
 333         struct rb_root multicast_tree;
 334
 335         struct workqueue_struct *wq;
 336         struct delayed_work mcast_task;
 337         struct work_struct carrier_on_task;
 338         struct work_struct flush_light;
 339         struct work_struct flush_normal;
 340         struct work_struct flush_heavy;
 341         struct work_struct restart_task;
 342         struct delayed_work ah_reap_task;
 343         struct delayed_work neigh_reap_task;
 344         struct ib_device *ca;
 345         u8                port;
 346         u16               pkey;
 347         u16               pkey_index;
 348         struct ib_pd     *pd;
 349         struct ib_cq     *recv_cq;
 350         struct ib_cq     *send_cq;
 351         struct ib_qp     *qp;
 352         u32               qkey;
 353
 354         union ib_gid local_gid;
 355         u16          local_lid;
 356
 357         unsigned int admin_mtu;
 358         unsigned int mcast_mtu;
 359         unsigned int max_ib_mtu;
 360
 361         struct ipoib_rx_buf *rx_ring;
 362
 363         struct ipoib_tx_buf *tx_ring;
 364         unsigned             tx_head;
 365         unsigned             tx_tail;
 366         struct ib_sge        tx_sge[MAX_SKB_FRAGS + 1];
 367         struct ib_ud_wr      tx_wr;
 368         unsigned             tx_outstanding;
 369         struct ib_wc         send_wc[MAX_SEND_CQE];
 370
 371         struct ib_recv_wr    rx_wr;
 372         struct ib_sge        rx_sge[IPOIB_UD_RX_SG];
 373
 374         struct ib_wc ibwc[IPOIB_NUM_WC];
 375
 376         struct list_head dead_ahs;
 377
 378         struct ib_event_handler event_handler;
 379
 380         struct net_device *parent;
 381         struct list_head child_intfs;
 382         struct list_head list;
 383         int    child_type;
 384
 385 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 386         struct ipoib_cm_dev_priv cm;
 387 #endif
 388
 389 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 390         struct list_head fs_list;
 391         struct dentry *mcg_dentry;
 392         struct dentry *path_dentry;
 393 #endif
 394         u64     hca_caps;
 395         struct ipoib_ethtool_st ethtool;
 396         struct timer_list poll_timer;
 397         unsigned max_send_sge;
 398         bool sm_fullmember_sendonly_support;
 399 };
 400
 401 struct ipoib_ah {
 402         struct net_device *dev;
 403         struct ib_ah      *ah;
 404         struct list_head   list;
 405         struct kref        ref;
 406         unsigned           last_send;
 407 };
 408
 409 struct ipoib_path {
 410         struct net_device    *dev;
 411         struct ib_sa_path_rec pathrec;
 412         struct ipoib_ah      *ah;
 413         struct sk_buff_head   queue;
 414
 415         struct list_head      neigh_list;
 416
 417         int                   query_id;
 418         struct ib_sa_query   *query;
 419         struct completion     done;
 420
 421         struct rb_node        rb_node;
 422         struct list_head      list;
 423         int                   valid;
 424 };
 425
 426 struct ipoib_neigh {
 427         struct ipoib_ah    *ah;
 428 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 429         struct ipoib_cm_tx *cm;
 430 #endif
 431         u8     daddr[INFINIBAND_ALEN];
 432         struct sk_buff_head queue;
 433
 434         struct net_device *dev;
 435
 436         struct list_head    list;
 437         struct ipoib_neigh __rcu *hnext;
 438         struct rcu_head     rcu;
 439         atomic_t            refcnt;
 440         unsigned long       alive;
 441 };
 442
 443 #define IPOIB_UD_MTU(ib_mtu)            (ib_mtu - IPOIB_ENCAP_LEN)
 444 #define IPOIB_UD_BUF_SIZE(ib_mtu)       (ib_mtu + IB_GRH_BYTES)
 445
 446 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
 447 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
 448 {
 449         if (atomic_dec_and_test(&neigh->refcnt))
 450                 ipoib_neigh_dtor(neigh);
 451 }
 452 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
 453 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
 454                                       struct net_device *dev);
 455 void ipoib_neigh_free(struct ipoib_neigh *neigh);
 456 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
 457
 458 extern struct workqueue_struct *ipoib_workqueue;
 459
 460 /* functions */
 461
 462 int ipoib_poll(struct napi_struct *napi, int budget);
 463 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
 464 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
 465
 466 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 467                                  struct ib_pd *pd, struct ib_ah_attr *attr);
 468 void ipoib_free_ah(struct kref *kref);
 469 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 470 {
 471         kref_put(&ah->ref, ipoib_free_ah);
 472 }
 473 int ipoib_open(struct net_device *dev);
 474 int ipoib_add_pkey_attr(struct net_device *dev);
 475 int ipoib_add_umcast_attr(struct net_device *dev);
 476
 477 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 478                 struct ipoib_ah *address, u32 qpn);
 479 void ipoib_reap_ah(struct work_struct *work);
 480
 481 struct ipoib_path *__path_find(struct net_device *dev, void *gid);
 482 void ipoib_mark_paths_invalid(struct net_device *dev);
 483 void ipoib_flush_paths(struct net_device *dev);
 484 int ipoib_check_sm_sendonly_fullmember_support(struct ipoib_dev_priv *priv);
 485 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
 486
 487 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 488 void ipoib_ib_dev_flush_light(struct work_struct *work);
 489 void ipoib_ib_dev_flush_normal(struct work_struct *work);
 490 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
 491 void ipoib_pkey_event(struct work_struct *work);
 492 void ipoib_ib_dev_cleanup(struct net_device *dev);
 493
 494 int ipoib_ib_dev_open(struct net_device *dev);
 495 int ipoib_ib_dev_up(struct net_device *dev);
 496 int ipoib_ib_dev_down(struct net_device *dev);
 497 int ipoib_ib_dev_stop(struct net_device *dev);
 498 void ipoib_pkey_dev_check_presence(struct net_device *dev);
 499
 500 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 501 void ipoib_dev_cleanup(struct net_device *dev);
 502
 503 void ipoib_mcast_join_task(struct work_struct *work);
 504 void ipoib_mcast_carrier_on_task(struct work_struct *work);
 505 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
 506
 507 void ipoib_mcast_restart_task(struct work_struct *work);
 508 int ipoib_mcast_start_thread(struct net_device *dev);
 509 int ipoib_mcast_stop_thread(struct net_device *dev);
 510
 511 void ipoib_mcast_dev_down(struct net_device *dev);
 512 void ipoib_mcast_dev_flush(struct net_device *dev);
 513
 514 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
 515 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
 516                         struct ipoib_tx_buf *tx_req);
 517
 518 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
 519                                    struct ipoib_tx_buf *tx_req)
 520 {
 521         int i, off;
 522         struct sk_buff *skb = tx_req->skb;
 523         skb_frag_t *frags = skb_shinfo(skb)->frags;
 524         int nr_frags = skb_shinfo(skb)->nr_frags;
 525         u64 *mapping = tx_req->mapping;
 526
 527         if (skb_headlen(skb)) {
 528                 priv->tx_sge[0].addr         = mapping[0];
 529                 priv->tx_sge[0].length       = skb_headlen(skb);
 530                 off = 1;
 531         } else
 532                 off = 0;
 533
 534         for (i = 0; i < nr_frags; ++i) {
 535                 priv->tx_sge[i + off].addr = mapping[i + off];
 536                 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
 537         }
 538         priv->tx_wr.wr.num_sge       = nr_frags + off;
 539 }
 540
 541 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 542 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 543 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 544 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 545                                   union ib_gid *gid,
 546                                   unsigned long *created,
 547                                   unsigned int *queuelen,
 548                                   unsigned int *complete,
 549                                   unsigned int *send_only);
 550
 551 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 552 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 553 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 554                           struct ipoib_path *path);
 555 #endif
 556
 557 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
 558                        union ib_gid *mgid, int set_qkey);
 559 void ipoib_mcast_remove_list(struct list_head *remove_list);
 560 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
 561                                 struct list_head *remove_list);
 562
 563 int ipoib_init_qp(struct net_device *dev);
 564 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 565 void ipoib_transport_dev_cleanup(struct net_device *dev);
 566
 567 void ipoib_event(struct ib_event_handler *handler,
 568                  struct ib_event *record);
 569
 570 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 571 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 572
 573 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
 574                      u16 pkey, int child_type);
 575
 576 int  __init ipoib_netlink_init(void);
 577 void __exit ipoib_netlink_fini(void);
 578
 579 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
 580 int  ipoib_set_mode(struct net_device *dev, const char *buf);
 581
 582 void ipoib_setup(struct net_device *dev);
 583
 584 void ipoib_pkey_open(struct ipoib_dev_priv *priv);
 585 void ipoib_drain_cq(struct net_device *dev);
 586
 587 void ipoib_set_ethtool_ops(struct net_device *dev);
 588 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
 589
 590 #define IPOIB_FLAGS_RC          0x80
 591 #define IPOIB_FLAGS_UC          0x40
 592
 593 /* We don't support UC connections at the moment */
 594 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 595
 596 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 597
 598 extern int ipoib_max_conn_qp;
 599
 600 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 601 {
 602         struct ipoib_dev_priv *priv = netdev_priv(dev);
 603         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 604                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 605 }
 606
 607 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 608 {
 609         struct ipoib_dev_priv *priv = netdev_priv(dev);
 610         return IPOIB_CM_SUPPORTED(hwaddr) &&
 611                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 612 }
 613
 614 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 615
 616 {
 617         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 618 }
 619
 620 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 621 {
 622         return neigh->cm;
 623 }
 624
 625 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 626 {
 627         neigh->cm = tx;
 628 }
 629
 630 static inline int ipoib_cm_has_srq(struct net_device *dev)
 631 {
 632         struct ipoib_dev_priv *priv = netdev_priv(dev);
 633         return !!priv->cm.srq;
 634 }
 635
 636 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 637 {
 638         struct ipoib_dev_priv *priv = netdev_priv(dev);
 639         return priv->cm.max_cm_mtu;
 640 }
 641
 642 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 643 int ipoib_cm_dev_open(struct net_device *dev);
 644 void ipoib_cm_dev_stop(struct net_device *dev);
 645 int ipoib_cm_dev_init(struct net_device *dev);
 646 int ipoib_cm_add_mode_attr(struct net_device *dev);
 647 void ipoib_cm_dev_cleanup(struct net_device *dev);
 648 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 649                                     struct ipoib_neigh *neigh);
 650 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 651 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 652                            unsigned int mtu);
 653 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 654 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
 655 #else
 656
 657 struct ipoib_cm_tx;
 658
 659 #define ipoib_max_conn_qp 0
 660
 661 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 662 {
 663         return 0;
 664 }
 665 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 666
 667 {
 668         return 0;
 669 }
 670
 671 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 672
 673 {
 674         return 0;
 675 }
 676
 677 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 678 {
 679         return NULL;
 680 }
 681
 682 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 683 {
 684 }
 685
 686 static inline int ipoib_cm_has_srq(struct net_device *dev)
 687 {
 688         return 0;
 689 }
 690
 691 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 692 {
 693         return 0;
 694 }
 695
 696 static inline
 697 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 698 {
 699         return;
 700 }
 701
 702 static inline
 703 int ipoib_cm_dev_open(struct net_device *dev)
 704 {
 705         return 0;
 706 }
 707
 708 static inline
 709 void ipoib_cm_dev_stop(struct net_device *dev)
 710 {
 711         return;
 712 }
 713
 714 static inline
 715 int ipoib_cm_dev_init(struct net_device *dev)
 716 {
 717         return -ENOSYS;
 718 }
 719
 720 static inline
 721 void ipoib_cm_dev_cleanup(struct net_device *dev)
 722 {
 723         return;
 724 }
 725
 726 static inline
 727 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 728                                     struct ipoib_neigh *neigh)
 729 {
 730         return NULL;
 731 }
 732
 733 static inline
 734 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 735 {
 736         return;
 737 }
 738
 739 static inline
 740 int ipoib_cm_add_mode_attr(struct net_device *dev)
 741 {
 742         return 0;
 743 }
 744
 745 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 746                                          unsigned int mtu)
 747 {
 748         dev_kfree_skb_any(skb);
 749 }
 750
 751 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 752 {
 753 }
 754
 755 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 756 {
 757 }
 758 #endif
 759
 760 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 761 void ipoib_create_debug_files(struct net_device *dev);
 762 void ipoib_delete_debug_files(struct net_device *dev);
 763 int ipoib_register_debugfs(void);
 764 void ipoib_unregister_debugfs(void);
 765 #else
 766 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 767 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 768 static inline int ipoib_register_debugfs(void) { return 0; }
 769 static inline void ipoib_unregister_debugfs(void) { }
 770 #endif
 771
 772 #define ipoib_printk(level, priv, format, arg...)       \
 773         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 774 #define ipoib_warn(priv, format, arg...)                \
 775         ipoib_printk(KERN_WARNING, priv, format , ## arg)
 776
 777 extern int ipoib_sendq_size;
 778 extern int ipoib_recvq_size;
 779
 780 extern struct ib_sa_client ipoib_sa_client;
 781
 782 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 783 extern int ipoib_debug_level;
 784
 785 #define ipoib_dbg(priv, format, arg...)                 \
 786         do {                                            \
 787                 if (ipoib_debug_level > 0)                      \
 788                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 789         } while (0)
 790 #define ipoib_dbg_mcast(priv, format, arg...)           \
 791         do {                                            \
 792                 if (mcast_debug_level > 0)              \
 793                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 794         } while (0)
 795 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 796 #define ipoib_dbg(priv, format, arg...)                 \
 797         do { (void) (priv); } while (0)
 798 #define ipoib_dbg_mcast(priv, format, arg...)           \
 799         do { (void) (priv); } while (0)
 800 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 801
 802 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 803 #define ipoib_dbg_data(priv, format, arg...)            \
 804         do {                                            \
 805                 if (data_debug_level > 0)               \
 806                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 807         } while (0)
 808 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 809 #define ipoib_dbg_data(priv, format, arg...)            \
 810         do { (void) (priv); } while (0)
 811 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 812
 813 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 814
 815 extern const char ipoib_driver_version[];
 816
 817 #endif /* _IPOIB_H */