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 /* constants */
  56
  57 enum ipoib_flush_level {
  58         IPOIB_FLUSH_LIGHT,
  59         IPOIB_FLUSH_NORMAL,
  60         IPOIB_FLUSH_HEAVY
  61 };
  62
  63 enum {
  64         IPOIB_ENCAP_LEN           = 4,
  65         IPOIB_PSEUDO_LEN          = 20,
  66         IPOIB_HARD_LEN            = IPOIB_ENCAP_LEN + IPOIB_PSEUDO_LEN,
  67
  68         IPOIB_UD_HEAD_SIZE        = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
  69         IPOIB_UD_RX_SG            = 2, /* max buffer needed for 4K mtu */
  70
  71         IPOIB_CM_MTU              = 0x10000 - 0x10, /* padding to align header to 16 */
  72         IPOIB_CM_BUF_SIZE         = IPOIB_CM_MTU  + IPOIB_ENCAP_LEN,
  73         IPOIB_CM_HEAD_SIZE        = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
  74         IPOIB_CM_RX_SG            = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
  75         IPOIB_RX_RING_SIZE        = 256,
  76         IPOIB_TX_RING_SIZE        = 128,
  77         IPOIB_MAX_QUEUE_SIZE      = 8192,
  78         IPOIB_MIN_QUEUE_SIZE      = 2,
  79         IPOIB_CM_MAX_CONN_QP      = 4096,
  80
  81         IPOIB_NUM_WC              = 4,
  82
  83         IPOIB_MAX_PATH_REC_QUEUE  = 3,
  84         IPOIB_MAX_MCAST_QUEUE     = 64,
  85
  86         IPOIB_FLAG_OPER_UP        = 0,
  87         IPOIB_FLAG_INITIALIZED    = 1,
  88         IPOIB_FLAG_ADMIN_UP       = 2,
  89         IPOIB_PKEY_ASSIGNED       = 3,
  90         IPOIB_FLAG_SUBINTERFACE   = 5,
  91         IPOIB_STOP_REAPER         = 7,
  92         IPOIB_FLAG_ADMIN_CM       = 9,
  93         IPOIB_FLAG_UMCAST         = 10,
  94         IPOIB_STOP_NEIGH_GC       = 11,
  95         IPOIB_NEIGH_TBL_FLUSH     = 12,
  96         IPOIB_FLAG_DEV_ADDR_SET   = 13,
  97         IPOIB_FLAG_DEV_ADDR_CTRL  = 14,
  98         IPOIB_FLAG_GOING_DOWN     = 15,
  99
 100         IPOIB_MAX_BACKOFF_SECONDS = 16,
 101
 102         IPOIB_MCAST_FLAG_FOUND    = 0,  /* used in set_multicast_list */
 103         IPOIB_MCAST_FLAG_SENDONLY = 1,
 104         /*
 105          * For IPOIB_MCAST_FLAG_BUSY
 106          * When set, in flight join and mcast->mc is unreliable
 107          * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or
 108          *   haven't started yet
 109          * When clear and mcast->mc is valid pointer, join was successful
 110          */
 111         IPOIB_MCAST_FLAG_BUSY     = 2,
 112         IPOIB_MCAST_FLAG_ATTACHED = 3,
 113
 114         MAX_SEND_CQE              = 16,
 115         IPOIB_CM_COPYBREAK        = 256,
 116
 117         IPOIB_NON_CHILD           = 0,
 118         IPOIB_LEGACY_CHILD        = 1,
 119         IPOIB_RTNL_CHILD          = 2,
 120 };
 121
 122 #define IPOIB_OP_RECV   (1ul << 31)
 123 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 124 #define IPOIB_OP_CM     (1ul << 30)
 125 #else
 126 #define IPOIB_OP_CM     (0)
 127 #endif
 128
 129 #define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
 130
 131 /* structs */
 132
 133 struct ipoib_header {
 134         __be16  proto;
 135         u16     reserved;
 136 };
 137
 138 struct ipoib_pseudo_header {
 139         u8      hwaddr[INFINIBAND_ALEN];
 140 };
 141
 142 static inline void skb_add_pseudo_hdr(struct sk_buff *skb)
 143 {
 144         char *data = skb_push(skb, IPOIB_PSEUDO_LEN);
 145
 146         /*
 147          * only the ipoib header is present now, make room for a dummy
 148          * pseudo header and set skb field accordingly
 149          */
 150         memset(data, 0, IPOIB_PSEUDO_LEN);
 151         skb_reset_mac_header(skb);
 152         skb_pull(skb, IPOIB_HARD_LEN);
 153 }
 154
 155 static inline struct ipoib_dev_priv *ipoib_priv(const struct net_device *dev)
 156 {
 157         struct rdma_netdev *rn = netdev_priv(dev);
 158
 159         return rn->clnt_priv;
 160 }
 161
 162 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
 163 struct ipoib_mcast {
 164         struct ib_sa_mcmember_rec mcmember;
 165         struct ib_sa_multicast   *mc;
 166         struct ipoib_ah          *ah;
 167
 168         struct rb_node    rb_node;
 169         struct list_head  list;
 170
 171         unsigned long created;
 172         unsigned long backoff;
 173         unsigned long delay_until;
 174
 175         unsigned long flags;
 176         unsigned char logcount;
 177
 178         struct list_head  neigh_list;
 179
 180         struct sk_buff_head pkt_queue;
 181
 182         struct net_device *dev;
 183         struct completion done;
 184 };
 185
 186 struct ipoib_rx_buf {
 187         struct sk_buff *skb;
 188         u64             mapping[IPOIB_UD_RX_SG];
 189 };
 190
 191 struct ipoib_tx_buf {
 192         struct sk_buff *skb;
 193         u64             mapping[MAX_SKB_FRAGS + 1];
 194 };
 195
 196 struct ipoib_cm_tx_buf {
 197         struct sk_buff *skb;
 198         u64             mapping;
 199 };
 200
 201 struct ib_cm_id;
 202
 203 struct ipoib_cm_data {
 204         __be32 qpn; /* High byte MUST be ignored on receive */
 205         __be32 mtu;
 206 };
 207
 208 /*
 209  * Quoting 10.3.1 Queue Pair and EE Context States:
 210  *
 211  * Note, for QPs that are associated with an SRQ, the Consumer should take the
 212  * QP through the Error State before invoking a Destroy QP or a Modify QP to the
 213  * Reset State.  The Consumer may invoke the Destroy QP without first performing
 214  * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
 215  * Last WQE Reached Event. However, if the Consumer does not wait for the
 216  * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
 217  * leakage may occur. Therefore, it is good programming practice to tear down a
 218  * QP that is associated with an SRQ by using the following process:
 219  *
 220  * - Put the QP in the Error State
 221  * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
 222  * - either:
 223  *       drain the CQ by invoking the Poll CQ verb and either wait for CQ
 224  *       to be empty or the number of Poll CQ operations has exceeded
 225  *       CQ capacity size;
 226  * - or
 227  *       post another WR that completes on the same CQ and wait for this
 228  *       WR to return as a WC;
 229  * - and then invoke a Destroy QP or Reset QP.
 230  *
 231  * We use the second option and wait for a completion on the
 232  * same CQ before destroying QPs attached to our SRQ.
 233  */
 234
 235 enum ipoib_cm_state {
 236         IPOIB_CM_RX_LIVE,
 237         IPOIB_CM_RX_ERROR, /* Ignored by stale task */
 238         IPOIB_CM_RX_FLUSH  /* Last WQE Reached event observed */
 239 };
 240
 241 struct ipoib_cm_rx {
 242         struct ib_cm_id        *id;
 243         struct ib_qp           *qp;
 244         struct ipoib_cm_rx_buf *rx_ring;
 245         struct list_head        list;
 246         struct net_device      *dev;
 247         unsigned long           jiffies;
 248         enum ipoib_cm_state     state;
 249         int                     recv_count;
 250 };
 251
 252 struct ipoib_cm_tx {
 253         struct ib_cm_id     *id;
 254         struct ib_qp        *qp;
 255         struct list_head     list;
 256         struct net_device   *dev;
 257         struct ipoib_neigh  *neigh;
 258         struct ipoib_path   *path;
 259         struct ipoib_tx_buf *tx_ring;
 260         unsigned             tx_head;
 261         unsigned             tx_tail;
 262         unsigned long        flags;
 263         u32                  mtu;
 264         unsigned             max_send_sge;
 265 };
 266
 267 struct ipoib_cm_rx_buf {
 268         struct sk_buff *skb;
 269         u64 mapping[IPOIB_CM_RX_SG];
 270 };
 271
 272 struct ipoib_cm_dev_priv {
 273         struct ib_srq          *srq;
 274         struct ipoib_cm_rx_buf *srq_ring;
 275         struct ib_cm_id        *id;
 276         struct list_head        passive_ids;   /* state: LIVE */
 277         struct list_head        rx_error_list; /* state: ERROR */
 278         struct list_head        rx_flush_list; /* state: FLUSH, drain not started */
 279         struct list_head        rx_drain_list; /* state: FLUSH, drain started */
 280         struct list_head        rx_reap_list;  /* state: FLUSH, drain done */
 281         struct work_struct      start_task;
 282         struct work_struct      reap_task;
 283         struct work_struct      skb_task;
 284         struct work_struct      rx_reap_task;
 285         struct delayed_work     stale_task;
 286         struct sk_buff_head     skb_queue;
 287         struct list_head        start_list;
 288         struct list_head        reap_list;
 289         struct ib_wc            ibwc[IPOIB_NUM_WC];
 290         struct ib_sge           rx_sge[IPOIB_CM_RX_SG];
 291         struct ib_recv_wr       rx_wr;
 292         int                     nonsrq_conn_qp;
 293         int                     max_cm_mtu;
 294         int                     num_frags;
 295 };
 296
 297 struct ipoib_ethtool_st {
 298         u16     coalesce_usecs;
 299         u16     max_coalesced_frames;
 300 };
 301
 302 struct ipoib_neigh_table;
 303
 304 struct ipoib_neigh_hash {
 305         struct ipoib_neigh_table       *ntbl;
 306         struct ipoib_neigh __rcu      **buckets;
 307         struct rcu_head                 rcu;
 308         u32                             mask;
 309         u32                             size;
 310 };
 311
 312 struct ipoib_neigh_table {
 313         struct ipoib_neigh_hash __rcu  *htbl;
 314         atomic_t                        entries;
 315         struct completion               flushed;
 316         struct completion               deleted;
 317 };
 318
 319 struct ipoib_qp_state_validate {
 320         struct work_struct work;
 321         struct ipoib_dev_priv   *priv;
 322 };
 323
 324 /*
 325  * Device private locking: network stack tx_lock protects members used
 326  * in TX fast path, lock protects everything else.  lock nests inside
 327  * of tx_lock (ie tx_lock must be acquired first if needed).
 328  */
 329 struct ipoib_dev_priv {
 330         spinlock_t lock;
 331
 332         struct net_device *dev;
 333
 334         struct napi_struct napi;
 335
 336         unsigned long flags;
 337
 338         struct rw_semaphore vlan_rwsem;
 339
 340         struct rb_root  path_tree;
 341         struct list_head path_list;
 342
 343         struct ipoib_neigh_table ntbl;
 344
 345         struct ipoib_mcast *broadcast;
 346         struct list_head multicast_list;
 347         struct rb_root multicast_tree;
 348
 349         struct workqueue_struct *wq;
 350         struct delayed_work mcast_task;
 351         struct work_struct carrier_on_task;
 352         struct work_struct flush_light;
 353         struct work_struct flush_normal;
 354         struct work_struct flush_heavy;
 355         struct work_struct restart_task;
 356         struct delayed_work ah_reap_task;
 357         struct delayed_work neigh_reap_task;
 358         struct ib_device *ca;
 359         u8                port;
 360         u16               pkey;
 361         u16               pkey_index;
 362         struct ib_pd     *pd;
 363         struct ib_cq     *recv_cq;
 364         struct ib_cq     *send_cq;
 365         struct ib_qp     *qp;
 366         u32               qkey;
 367
 368         union ib_gid local_gid;
 369         u16          local_lid;
 370
 371         unsigned int admin_mtu;
 372         unsigned int mcast_mtu;
 373         unsigned int max_ib_mtu;
 374
 375         struct ipoib_rx_buf *rx_ring;
 376
 377         struct ipoib_tx_buf *tx_ring;
 378         unsigned             tx_head;
 379         unsigned             tx_tail;
 380         struct ib_sge        tx_sge[MAX_SKB_FRAGS + 1];
 381         struct ib_ud_wr      tx_wr;
 382         unsigned             tx_outstanding;
 383         struct ib_wc         send_wc[MAX_SEND_CQE];
 384
 385         struct ib_recv_wr    rx_wr;
 386         struct ib_sge        rx_sge[IPOIB_UD_RX_SG];
 387
 388         struct ib_wc ibwc[IPOIB_NUM_WC];
 389
 390         struct list_head dead_ahs;
 391
 392         struct ib_event_handler event_handler;
 393
 394         struct net_device *parent;
 395         struct list_head child_intfs;
 396         struct list_head list;
 397         int    child_type;
 398
 399 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 400         struct ipoib_cm_dev_priv cm;
 401 #endif
 402
 403 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 404         struct list_head fs_list;
 405         struct dentry *mcg_dentry;
 406         struct dentry *path_dentry;
 407 #endif
 408         u64     hca_caps;
 409         struct ipoib_ethtool_st ethtool;
 410         struct timer_list poll_timer;
 411         unsigned max_send_sge;
 412         bool sm_fullmember_sendonly_support;
 413         const struct net_device_ops     *rn_ops;
 414 };
 415
 416 struct ipoib_ah {
 417         struct net_device *dev;
 418         struct ib_ah      *ah;
 419         struct list_head   list;
 420         struct kref        ref;
 421         unsigned           last_send;
 422 };
 423
 424 struct ipoib_path {
 425         struct net_device    *dev;
 426         struct sa_path_rec pathrec;
 427         struct ipoib_ah      *ah;
 428         struct sk_buff_head   queue;
 429
 430         struct list_head      neigh_list;
 431
 432         int                   query_id;
 433         struct ib_sa_query   *query;
 434         struct completion     done;
 435
 436         struct rb_node        rb_node;
 437         struct list_head      list;
 438         int                   valid;
 439 };
 440
 441 struct ipoib_neigh {
 442         struct ipoib_ah    *ah;
 443 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 444         struct ipoib_cm_tx *cm;
 445 #endif
 446         u8     daddr[INFINIBAND_ALEN];
 447         struct sk_buff_head queue;
 448
 449         struct net_device *dev;
 450
 451         struct list_head    list;
 452         struct ipoib_neigh __rcu *hnext;
 453         struct rcu_head     rcu;
 454         atomic_t            refcnt;
 455         unsigned long       alive;
 456 };
 457
 458 #define IPOIB_UD_MTU(ib_mtu)            (ib_mtu - IPOIB_ENCAP_LEN)
 459 #define IPOIB_UD_BUF_SIZE(ib_mtu)       (ib_mtu + IB_GRH_BYTES)
 460
 461 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
 462 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
 463 {
 464         if (atomic_dec_and_test(&neigh->refcnt))
 465                 ipoib_neigh_dtor(neigh);
 466 }
 467 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
 468 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
 469                                       struct net_device *dev);
 470 void ipoib_neigh_free(struct ipoib_neigh *neigh);
 471 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
 472
 473 extern struct workqueue_struct *ipoib_workqueue;
 474
 475 /* functions */
 476
 477 int ipoib_poll(struct napi_struct *napi, int budget);
 478 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
 479 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
 480
 481 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 482                                  struct ib_pd *pd, struct rdma_ah_attr *attr);
 483 void ipoib_free_ah(struct kref *kref);
 484 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 485 {
 486         kref_put(&ah->ref, ipoib_free_ah);
 487 }
 488 int ipoib_open(struct net_device *dev);
 489 int ipoib_add_pkey_attr(struct net_device *dev);
 490 int ipoib_add_umcast_attr(struct net_device *dev);
 491
 492 int ipoib_send(struct net_device *dev, struct sk_buff *skb,
 493                struct ib_ah *address, u32 dqpn);
 494 void ipoib_reap_ah(struct work_struct *work);
 495
 496 struct ipoib_path *__path_find(struct net_device *dev, void *gid);
 497 void ipoib_mark_paths_invalid(struct net_device *dev);
 498 void ipoib_flush_paths(struct net_device *dev);
 499 struct ipoib_dev_priv *ipoib_intf_alloc(struct ib_device *hca, u8 port,
 500                                         const char *format);
 501 void ipoib_ib_tx_timer_func(unsigned long ctx);
 502 void ipoib_ib_dev_flush_light(struct work_struct *work);
 503 void ipoib_ib_dev_flush_normal(struct work_struct *work);
 504 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
 505 void ipoib_pkey_event(struct work_struct *work);
 506 void ipoib_ib_dev_cleanup(struct net_device *dev);
 507
 508 int ipoib_ib_dev_open_default(struct net_device *dev);
 509 int ipoib_ib_dev_open(struct net_device *dev);
 510 int ipoib_ib_dev_stop(struct net_device *dev);
 511 void ipoib_ib_dev_up(struct net_device *dev);
 512 void ipoib_ib_dev_down(struct net_device *dev);
 513 int ipoib_ib_dev_stop_default(struct net_device *dev);
 514 void ipoib_pkey_dev_check_presence(struct net_device *dev);
 515
 516 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 517 void ipoib_dev_cleanup(struct net_device *dev);
 518
 519 void ipoib_mcast_join_task(struct work_struct *work);
 520 void ipoib_mcast_carrier_on_task(struct work_struct *work);
 521 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
 522
 523 void ipoib_mcast_restart_task(struct work_struct *work);
 524 void ipoib_mcast_start_thread(struct net_device *dev);
 525 int ipoib_mcast_stop_thread(struct net_device *dev);
 526
 527 void ipoib_mcast_dev_down(struct net_device *dev);
 528 void ipoib_mcast_dev_flush(struct net_device *dev);
 529
 530 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
 531 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
 532                         struct ipoib_tx_buf *tx_req);
 533
 534 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
 535                                    struct ipoib_tx_buf *tx_req)
 536 {
 537         int i, off;
 538         struct sk_buff *skb = tx_req->skb;
 539         skb_frag_t *frags = skb_shinfo(skb)->frags;
 540         int nr_frags = skb_shinfo(skb)->nr_frags;
 541         u64 *mapping = tx_req->mapping;
 542
 543         if (skb_headlen(skb)) {
 544                 priv->tx_sge[0].addr         = mapping[0];
 545                 priv->tx_sge[0].length       = skb_headlen(skb);
 546                 off = 1;
 547         } else
 548                 off = 0;
 549
 550         for (i = 0; i < nr_frags; ++i) {
 551                 priv->tx_sge[i + off].addr = mapping[i + off];
 552                 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
 553         }
 554         priv->tx_wr.wr.num_sge       = nr_frags + off;
 555 }
 556
 557 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 558 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 559 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 560 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 561                                   union ib_gid *gid,
 562                                   unsigned long *created,
 563                                   unsigned int *queuelen,
 564                                   unsigned int *complete,
 565                                   unsigned int *send_only);
 566
 567 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 568 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 569 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 570                           struct ipoib_path *path);
 571 #endif
 572
 573 int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
 574                        union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
 575 int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
 576                        union ib_gid *mgid, u16 mlid);
 577 void ipoib_mcast_remove_list(struct list_head *remove_list);
 578 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
 579                                 struct list_head *remove_list);
 580
 581 int ipoib_init_qp(struct net_device *dev);
 582 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 583 void ipoib_transport_dev_cleanup(struct net_device *dev);
 584
 585 void ipoib_event(struct ib_event_handler *handler,
 586                  struct ib_event *record);
 587
 588 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 589 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 590
 591 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
 592                      u16 pkey, int child_type);
 593
 594 int  __init ipoib_netlink_init(void);
 595 void __exit ipoib_netlink_fini(void);
 596
 597 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
 598 int  ipoib_set_mode(struct net_device *dev, const char *buf);
 599
 600 void ipoib_setup_common(struct net_device *dev);
 601
 602 void ipoib_pkey_open(struct ipoib_dev_priv *priv);
 603 void ipoib_drain_cq(struct net_device *dev);
 604
 605 void ipoib_set_ethtool_ops(struct net_device *dev);
 606 void ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
 607
 608 #define IPOIB_FLAGS_RC          0x80
 609 #define IPOIB_FLAGS_UC          0x40
 610
 611 /* We don't support UC connections at the moment */
 612 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 613
 614 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 615
 616 extern int ipoib_max_conn_qp;
 617
 618 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 619 {
 620         struct ipoib_dev_priv *priv = ipoib_priv(dev);
 621         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 622                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 623 }
 624
 625 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 626 {
 627         struct ipoib_dev_priv *priv = ipoib_priv(dev);
 628         return IPOIB_CM_SUPPORTED(hwaddr) &&
 629                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 630 }
 631
 632 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 633
 634 {
 635         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 636 }
 637
 638 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 639 {
 640         return neigh->cm;
 641 }
 642
 643 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 644 {
 645         neigh->cm = tx;
 646 }
 647
 648 static inline int ipoib_cm_has_srq(struct net_device *dev)
 649 {
 650         struct ipoib_dev_priv *priv = ipoib_priv(dev);
 651         return !!priv->cm.srq;
 652 }
 653
 654 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 655 {
 656         struct ipoib_dev_priv *priv = ipoib_priv(dev);
 657         return priv->cm.max_cm_mtu;
 658 }
 659
 660 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 661 int ipoib_cm_dev_open(struct net_device *dev);
 662 void ipoib_cm_dev_stop(struct net_device *dev);
 663 int ipoib_cm_dev_init(struct net_device *dev);
 664 int ipoib_cm_add_mode_attr(struct net_device *dev);
 665 void ipoib_cm_dev_cleanup(struct net_device *dev);
 666 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 667                                     struct ipoib_neigh *neigh);
 668 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 669 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 670                            unsigned int mtu);
 671 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 672 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
 673 #else
 674
 675 struct ipoib_cm_tx;
 676
 677 #define ipoib_max_conn_qp 0
 678
 679 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 680 {
 681         return 0;
 682 }
 683 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 684
 685 {
 686         return 0;
 687 }
 688
 689 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 690
 691 {
 692         return 0;
 693 }
 694
 695 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 696 {
 697         return NULL;
 698 }
 699
 700 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 701 {
 702 }
 703
 704 static inline int ipoib_cm_has_srq(struct net_device *dev)
 705 {
 706         return 0;
 707 }
 708
 709 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 710 {
 711         return 0;
 712 }
 713
 714 static inline
 715 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 716 {
 717         return;
 718 }
 719
 720 static inline
 721 int ipoib_cm_dev_open(struct net_device *dev)
 722 {
 723         return 0;
 724 }
 725
 726 static inline
 727 void ipoib_cm_dev_stop(struct net_device *dev)
 728 {
 729         return;
 730 }
 731
 732 static inline
 733 int ipoib_cm_dev_init(struct net_device *dev)
 734 {
 735         return -ENOSYS;
 736 }
 737
 738 static inline
 739 void ipoib_cm_dev_cleanup(struct net_device *dev)
 740 {
 741         return;
 742 }
 743
 744 static inline
 745 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 746                                     struct ipoib_neigh *neigh)
 747 {
 748         return NULL;
 749 }
 750
 751 static inline
 752 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 753 {
 754         return;
 755 }
 756
 757 static inline
 758 int ipoib_cm_add_mode_attr(struct net_device *dev)
 759 {
 760         return 0;
 761 }
 762
 763 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 764                                          unsigned int mtu)
 765 {
 766         dev_kfree_skb_any(skb);
 767 }
 768
 769 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 770 {
 771 }
 772
 773 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 774 {
 775 }
 776 #endif
 777
 778 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 779 void ipoib_create_debug_files(struct net_device *dev);
 780 void ipoib_delete_debug_files(struct net_device *dev);
 781 int ipoib_register_debugfs(void);
 782 void ipoib_unregister_debugfs(void);
 783 #else
 784 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 785 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 786 static inline int ipoib_register_debugfs(void) { return 0; }
 787 static inline void ipoib_unregister_debugfs(void) { }
 788 #endif
 789
 790 #define ipoib_printk(level, priv, format, arg...)       \
 791         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 792 #define ipoib_warn(priv, format, arg...)                \
 793 do {                                                    \
 794         static DEFINE_RATELIMIT_STATE(_rs,              \
 795                 10 * HZ /*10 seconds */,                \
 796                 100);           \
 797         if (__ratelimit(&_rs))                          \
 798                 ipoib_printk(KERN_WARNING, priv, format , ## arg);\
 799 } while (0)
 800
 801 extern int ipoib_sendq_size;
 802 extern int ipoib_recvq_size;
 803
 804 extern struct ib_sa_client ipoib_sa_client;
 805
 806 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 807 extern int ipoib_debug_level;
 808
 809 #define ipoib_dbg(priv, format, arg...)                 \
 810         do {                                            \
 811                 if (ipoib_debug_level > 0)                      \
 812                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 813         } while (0)
 814 #define ipoib_dbg_mcast(priv, format, arg...)           \
 815         do {                                            \
 816                 if (mcast_debug_level > 0)              \
 817                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 818         } while (0)
 819 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 820 #define ipoib_dbg(priv, format, arg...)                 \
 821         do { (void) (priv); } while (0)
 822 #define ipoib_dbg_mcast(priv, format, arg...)           \
 823         do { (void) (priv); } while (0)
 824 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 825
 826 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 827 #define ipoib_dbg_data(priv, format, arg...)            \
 828         do {                                            \
 829                 if (data_debug_level > 0)               \
 830                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 831         } while (0)
 832 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 833 #define ipoib_dbg_data(priv, format, arg...)            \
 834         do { (void) (priv); } while (0)
 835 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 836
 837 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 838
 839 extern const char ipoib_driver_version[];
 840
 841 #endif /* _IPOIB_H */