drivers/infiniband/ulp/ipoib/ipoib.h

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   4  * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  */
  34
  35 #ifndef _IPOIB_H
  36 #define _IPOIB_H
  37
  38 #include <linux/list.h>
  39 #include <linux/skbuff.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/workqueue.h>
  42 #include <linux/kref.h>
  43 #include <linux/if_infiniband.h>
  44 #include <linux/mutex.h>
  45
  46 #include <net/neighbour.h>
  47 #include <net/sch_generic.h>
  48
  49 #include <linux/atomic.h>
  50
  51 #include <rdma/ib_verbs.h>
  52 #include <rdma/ib_pack.h>
  53 #include <rdma/ib_sa.h>
  54 #include <linux/sched.h>
  55
  56 /* constants */
  57
  58 enum ipoib_flush_level {
  59         IPOIB_FLUSH_LIGHT,
  60         IPOIB_FLUSH_NORMAL,
  61         IPOIB_FLUSH_HEAVY
  62 };
  63
  64 enum {
  65         IPOIB_ENCAP_LEN           = 4,
  66
  67         IPOIB_UD_HEAD_SIZE        = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
  68         IPOIB_UD_RX_SG            = 2, /* max buffer needed for 4K mtu */
  69
  70         IPOIB_CM_MTU              = 0x10000 - 0x10, /* padding to align header to 16 */
  71         IPOIB_CM_BUF_SIZE         = IPOIB_CM_MTU  + IPOIB_ENCAP_LEN,
  72         IPOIB_CM_HEAD_SIZE        = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
  73         IPOIB_CM_RX_SG            = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
  74         IPOIB_RX_RING_SIZE        = 256,
  75         IPOIB_TX_RING_SIZE        = 128,
  76         IPOIB_MAX_QUEUE_SIZE      = 8192,
  77         IPOIB_MIN_QUEUE_SIZE      = 2,
  78         IPOIB_CM_MAX_CONN_QP      = 4096,
  79
  80         IPOIB_NUM_WC              = 4,
  81
  82         IPOIB_MAX_PATH_REC_QUEUE  = 3,
  83         IPOIB_MAX_MCAST_QUEUE     = 3,
  84
  85         IPOIB_FLAG_OPER_UP        = 0,
  86         IPOIB_FLAG_INITIALIZED    = 1,
  87         IPOIB_FLAG_ADMIN_UP       = 2,
  88         IPOIB_PKEY_ASSIGNED       = 3,
  89         IPOIB_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 };
 248
 249 struct ipoib_cm_rx_buf {
 250         struct sk_buff *skb;
 251         u64 mapping[IPOIB_CM_RX_SG];
 252 };
 253
 254 struct ipoib_cm_dev_priv {
 255         struct ib_srq          *srq;
 256         struct ipoib_cm_rx_buf *srq_ring;
 257         struct ib_cm_id        *id;
 258         struct list_head        passive_ids;   /* state: LIVE */
 259         struct list_head        rx_error_list; /* state: ERROR */
 260         struct list_head        rx_flush_list; /* state: FLUSH, drain not started */
 261         struct list_head        rx_drain_list; /* state: FLUSH, drain started */
 262         struct list_head        rx_reap_list;  /* state: FLUSH, drain done */
 263         struct work_struct      start_task;
 264         struct work_struct      reap_task;
 265         struct work_struct      skb_task;
 266         struct work_struct      rx_reap_task;
 267         struct delayed_work     stale_task;
 268         struct sk_buff_head     skb_queue;
 269         struct list_head        start_list;
 270         struct list_head        reap_list;
 271         struct ib_wc            ibwc[IPOIB_NUM_WC];
 272         struct ib_sge           rx_sge[IPOIB_CM_RX_SG];
 273         struct ib_recv_wr       rx_wr;
 274         int                     nonsrq_conn_qp;
 275         int                     max_cm_mtu;
 276         int                     num_frags;
 277 };
 278
 279 struct ipoib_ethtool_st {
 280         u16     coalesce_usecs;
 281         u16     max_coalesced_frames;
 282 };
 283
 284 struct ipoib_neigh_table;
 285
 286 struct ipoib_neigh_hash {
 287         struct ipoib_neigh_table       *ntbl;
 288         struct ipoib_neigh __rcu      **buckets;
 289         struct rcu_head                 rcu;
 290         u32                             mask;
 291         u32                             size;
 292 };
 293
 294 struct ipoib_neigh_table {
 295         struct ipoib_neigh_hash __rcu  *htbl;
 296         atomic_t                        entries;
 297         struct completion               flushed;
 298         struct completion               deleted;
 299 };
 300
 301 struct ipoib_qp_state_validate {
 302         struct work_struct work;
 303         struct ipoib_dev_priv   *priv;
 304 };
 305
 306 /*
 307  * Device private locking: network stack tx_lock protects members used
 308  * in TX fast path, lock protects everything else.  lock nests inside
 309  * of tx_lock (ie tx_lock must be acquired first if needed).
 310  */
 311 struct ipoib_dev_priv {
 312         spinlock_t lock;
 313
 314         struct net_device *dev;
 315
 316         struct napi_struct napi;
 317
 318         unsigned long flags;
 319
 320         struct rw_semaphore vlan_rwsem;
 321
 322         struct rb_root  path_tree;
 323         struct list_head path_list;
 324
 325         struct ipoib_neigh_table ntbl;
 326
 327         struct ipoib_mcast *broadcast;
 328         struct list_head multicast_list;
 329         struct rb_root multicast_tree;
 330
 331         struct workqueue_struct *wq;
 332         struct delayed_work mcast_task;
 333         struct work_struct carrier_on_task;
 334         struct work_struct flush_light;
 335         struct work_struct flush_normal;
 336         struct work_struct flush_heavy;
 337         struct work_struct restart_task;
 338         struct delayed_work ah_reap_task;
 339         struct delayed_work neigh_reap_task;
 340         struct ib_device *ca;
 341         u8                port;
 342         u16               pkey;
 343         u16               pkey_index;
 344         struct ib_pd     *pd;
 345         struct ib_mr     *mr;
 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_send_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 };
 395
 396 struct ipoib_ah {
 397         struct net_device *dev;
 398         struct ib_ah      *ah;
 399         struct list_head   list;
 400         struct kref        ref;
 401         unsigned           last_send;
 402 };
 403
 404 struct ipoib_path {
 405         struct net_device    *dev;
 406         struct ib_sa_path_rec pathrec;
 407         struct ipoib_ah      *ah;
 408         struct sk_buff_head   queue;
 409
 410         struct list_head      neigh_list;
 411
 412         int                   query_id;
 413         struct ib_sa_query   *query;
 414         struct completion     done;
 415
 416         struct rb_node        rb_node;
 417         struct list_head      list;
 418         int                   valid;
 419 };
 420
 421 struct ipoib_neigh {
 422         struct ipoib_ah    *ah;
 423 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 424         struct ipoib_cm_tx *cm;
 425 #endif
 426         u8     daddr[INFINIBAND_ALEN];
 427         struct sk_buff_head queue;
 428
 429         struct net_device *dev;
 430
 431         struct list_head    list;
 432         struct ipoib_neigh __rcu *hnext;
 433         struct rcu_head     rcu;
 434         atomic_t            refcnt;
 435         unsigned long       alive;
 436 };
 437
 438 #define IPOIB_UD_MTU(ib_mtu)            (ib_mtu - IPOIB_ENCAP_LEN)
 439 #define IPOIB_UD_BUF_SIZE(ib_mtu)       (ib_mtu + IB_GRH_BYTES)
 440
 441 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
 442 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
 443 {
 444         if (atomic_dec_and_test(&neigh->refcnt))
 445                 ipoib_neigh_dtor(neigh);
 446 }
 447 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
 448 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
 449                                       struct net_device *dev);
 450 void ipoib_neigh_free(struct ipoib_neigh *neigh);
 451 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
 452
 453 extern struct workqueue_struct *ipoib_workqueue;
 454
 455 /* functions */
 456
 457 int ipoib_poll(struct napi_struct *napi, int budget);
 458 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
 459 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
 460
 461 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 462                                  struct ib_pd *pd, struct ib_ah_attr *attr);
 463 void ipoib_free_ah(struct kref *kref);
 464 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 465 {
 466         kref_put(&ah->ref, ipoib_free_ah);
 467 }
 468 int ipoib_open(struct net_device *dev);
 469 int ipoib_add_pkey_attr(struct net_device *dev);
 470 int ipoib_add_umcast_attr(struct net_device *dev);
 471
 472 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 473                 struct ipoib_ah *address, u32 qpn);
 474 void ipoib_reap_ah(struct work_struct *work);
 475
 476 void ipoib_mark_paths_invalid(struct net_device *dev);
 477 void ipoib_flush_paths(struct net_device *dev);
 478 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
 479
 480 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 481 void ipoib_ib_dev_flush_light(struct work_struct *work);
 482 void ipoib_ib_dev_flush_normal(struct work_struct *work);
 483 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
 484 void ipoib_pkey_event(struct work_struct *work);
 485 void ipoib_ib_dev_cleanup(struct net_device *dev);
 486
 487 int ipoib_ib_dev_open(struct net_device *dev);
 488 int ipoib_ib_dev_up(struct net_device *dev);
 489 int ipoib_ib_dev_down(struct net_device *dev);
 490 int ipoib_ib_dev_stop(struct net_device *dev);
 491 void ipoib_pkey_dev_check_presence(struct net_device *dev);
 492
 493 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
 494 void ipoib_dev_cleanup(struct net_device *dev);
 495
 496 void ipoib_mcast_join_task(struct work_struct *work);
 497 void ipoib_mcast_carrier_on_task(struct work_struct *work);
 498 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
 499
 500 void ipoib_mcast_restart_task(struct work_struct *work);
 501 int ipoib_mcast_start_thread(struct net_device *dev);
 502 int ipoib_mcast_stop_thread(struct net_device *dev);
 503
 504 void ipoib_mcast_dev_down(struct net_device *dev);
 505 void ipoib_mcast_dev_flush(struct net_device *dev);
 506
 507 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
 508 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
 509                         struct ipoib_tx_buf *tx_req);
 510
 511 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
 512                                    struct ipoib_tx_buf *tx_req)
 513 {
 514         int i, off;
 515         struct sk_buff *skb = tx_req->skb;
 516         skb_frag_t *frags = skb_shinfo(skb)->frags;
 517         int nr_frags = skb_shinfo(skb)->nr_frags;
 518         u64 *mapping = tx_req->mapping;
 519
 520         if (skb_headlen(skb)) {
 521                 priv->tx_sge[0].addr         = mapping[0];
 522                 priv->tx_sge[0].length       = skb_headlen(skb);
 523                 off = 1;
 524         } else
 525                 off = 0;
 526
 527         for (i = 0; i < nr_frags; ++i) {
 528                 priv->tx_sge[i + off].addr = mapping[i + off];
 529                 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
 530         }
 531         priv->tx_wr.num_sge          = nr_frags + off;
 532 }
 533
 534 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 535 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 536 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 537 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 538                                   union ib_gid *gid,
 539                                   unsigned long *created,
 540                                   unsigned int *queuelen,
 541                                   unsigned int *complete,
 542                                   unsigned int *send_only);
 543
 544 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 545 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 546 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 547                           struct ipoib_path *path);
 548 #endif
 549
 550 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
 551                        union ib_gid *mgid, int set_qkey);
 552
 553 int ipoib_init_qp(struct net_device *dev);
 554 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 555 void ipoib_transport_dev_cleanup(struct net_device *dev);
 556
 557 void ipoib_event(struct ib_event_handler *handler,
 558                  struct ib_event *record);
 559
 560 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 561 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 562
 563 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
 564                      u16 pkey, int child_type);
 565
 566 int  __init ipoib_netlink_init(void);
 567 void __exit ipoib_netlink_fini(void);
 568
 569 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
 570 int  ipoib_set_mode(struct net_device *dev, const char *buf);
 571
 572 void ipoib_setup(struct net_device *dev);
 573
 574 void ipoib_pkey_open(struct ipoib_dev_priv *priv);
 575 void ipoib_drain_cq(struct net_device *dev);
 576
 577 void ipoib_set_ethtool_ops(struct net_device *dev);
 578 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
 579
 580 #define IPOIB_FLAGS_RC          0x80
 581 #define IPOIB_FLAGS_UC          0x40
 582
 583 /* We don't support UC connections at the moment */
 584 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 585
 586 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 587
 588 extern int ipoib_max_conn_qp;
 589
 590 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 591 {
 592         struct ipoib_dev_priv *priv = netdev_priv(dev);
 593         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 594                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 595 }
 596
 597 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 598 {
 599         struct ipoib_dev_priv *priv = netdev_priv(dev);
 600         return IPOIB_CM_SUPPORTED(hwaddr) &&
 601                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 602 }
 603
 604 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 605
 606 {
 607         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 608 }
 609
 610 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 611 {
 612         return neigh->cm;
 613 }
 614
 615 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 616 {
 617         neigh->cm = tx;
 618 }
 619
 620 static inline int ipoib_cm_has_srq(struct net_device *dev)
 621 {
 622         struct ipoib_dev_priv *priv = netdev_priv(dev);
 623         return !!priv->cm.srq;
 624 }
 625
 626 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 627 {
 628         struct ipoib_dev_priv *priv = netdev_priv(dev);
 629         return priv->cm.max_cm_mtu;
 630 }
 631
 632 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 633 int ipoib_cm_dev_open(struct net_device *dev);
 634 void ipoib_cm_dev_stop(struct net_device *dev);
 635 int ipoib_cm_dev_init(struct net_device *dev);
 636 int ipoib_cm_add_mode_attr(struct net_device *dev);
 637 void ipoib_cm_dev_cleanup(struct net_device *dev);
 638 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 639                                     struct ipoib_neigh *neigh);
 640 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 641 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 642                            unsigned int mtu);
 643 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 644 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
 645 #else
 646
 647 struct ipoib_cm_tx;
 648
 649 #define ipoib_max_conn_qp 0
 650
 651 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 652 {
 653         return 0;
 654 }
 655 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 656
 657 {
 658         return 0;
 659 }
 660
 661 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 662
 663 {
 664         return 0;
 665 }
 666
 667 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 668 {
 669         return NULL;
 670 }
 671
 672 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 673 {
 674 }
 675
 676 static inline int ipoib_cm_has_srq(struct net_device *dev)
 677 {
 678         return 0;
 679 }
 680
 681 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 682 {
 683         return 0;
 684 }
 685
 686 static inline
 687 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 688 {
 689         return;
 690 }
 691
 692 static inline
 693 int ipoib_cm_dev_open(struct net_device *dev)
 694 {
 695         return 0;
 696 }
 697
 698 static inline
 699 void ipoib_cm_dev_stop(struct net_device *dev)
 700 {
 701         return;
 702 }
 703
 704 static inline
 705 int ipoib_cm_dev_init(struct net_device *dev)
 706 {
 707         return -ENOSYS;
 708 }
 709
 710 static inline
 711 void ipoib_cm_dev_cleanup(struct net_device *dev)
 712 {
 713         return;
 714 }
 715
 716 static inline
 717 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 718                                     struct ipoib_neigh *neigh)
 719 {
 720         return NULL;
 721 }
 722
 723 static inline
 724 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 725 {
 726         return;
 727 }
 728
 729 static inline
 730 int ipoib_cm_add_mode_attr(struct net_device *dev)
 731 {
 732         return 0;
 733 }
 734
 735 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 736                                          unsigned int mtu)
 737 {
 738         dev_kfree_skb_any(skb);
 739 }
 740
 741 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 742 {
 743 }
 744
 745 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 746 {
 747 }
 748 #endif
 749
 750 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 751 void ipoib_create_debug_files(struct net_device *dev);
 752 void ipoib_delete_debug_files(struct net_device *dev);
 753 int ipoib_register_debugfs(void);
 754 void ipoib_unregister_debugfs(void);
 755 #else
 756 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 757 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 758 static inline int ipoib_register_debugfs(void) { return 0; }
 759 static inline void ipoib_unregister_debugfs(void) { }
 760 #endif
 761
 762 #define ipoib_printk(level, priv, format, arg...)       \
 763         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 764 #define ipoib_warn(priv, format, arg...)                \
 765         ipoib_printk(KERN_WARNING, priv, format , ## arg)
 766
 767 extern int ipoib_sendq_size;
 768 extern int ipoib_recvq_size;
 769
 770 extern struct ib_sa_client ipoib_sa_client;
 771
 772 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 773 extern int ipoib_debug_level;
 774
 775 #define ipoib_dbg(priv, format, arg...)                 \
 776         do {                                            \
 777                 if (ipoib_debug_level > 0)                      \
 778                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 779         } while (0)
 780 #define ipoib_dbg_mcast(priv, format, arg...)           \
 781         do {                                            \
 782                 if (mcast_debug_level > 0)              \
 783                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 784         } while (0)
 785 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 786 #define ipoib_dbg(priv, format, arg...)                 \
 787         do { (void) (priv); } while (0)
 788 #define ipoib_dbg_mcast(priv, format, arg...)           \
 789         do { (void) (priv); } while (0)
 790 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 791
 792 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 793 #define ipoib_dbg_data(priv, format, arg...)            \
 794         do {                                            \
 795                 if (data_debug_level > 0)               \
 796                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 797         } while (0)
 798 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 799 #define ipoib_dbg_data(priv, format, arg...)            \
 800         do { (void) (priv); } while (0)
 801 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 802
 803 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 804
 805 extern const char ipoib_driver_version[];
 806
 807 #endif /* _IPOIB_H */