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