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