drivers/infiniband/ulp/ipoib/ipoib.h

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This source file includes following definitions.
skb_add_pseudo_hdr
ipoib_priv
ipoib_neigh_put
ipoib_put_ah
ipoib_build_sge
ipoib_cm_admin_enabled
ipoib_cm_enabled
ipoib_cm_up
ipoib_cm_get
ipoib_cm_set
ipoib_cm_has_srq
ipoib_cm_max_mtu
ipoib_cm_admin_enabled
ipoib_cm_enabled
ipoib_cm_up
ipoib_cm_get
ipoib_cm_set
ipoib_cm_has_srq
ipoib_cm_max_mtu
ipoib_cm_send
ipoib_cm_dev_open
ipoib_cm_dev_stop
ipoib_cm_dev_init
ipoib_cm_dev_cleanup
ipoib_cm_create_tx
ipoib_cm_destroy_tx
ipoib_cm_add_mode_attr
ipoib_cm_skb_too_long
ipoib_cm_handle_rx_wc
ipoib_cm_handle_tx_wc
ipoib_create_debug_files
ipoib_delete_debug_files
ipoib_register_debugfs
ipoib_unregister_debugfs
   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_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              = 64,
 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_pseudo_header {
 137         u8      hwaddr[INFINIBAND_ALEN];
 138 };
 139 
 140 static inline void skb_add_pseudo_hdr(struct sk_buff *skb)
 141 {
 142         char *data = skb_push(skb, IPOIB_PSEUDO_LEN);
 143 
 144         /*
 145          * only the ipoib header is present now, make room for a dummy
 146          * pseudo header and set skb field accordingly
 147          */
 148         memset(data, 0, IPOIB_PSEUDO_LEN);
 149         skb_reset_mac_header(skb);
 150         skb_pull(skb, IPOIB_HARD_LEN);
 151 }
 152 
 153 static inline struct ipoib_dev_priv *ipoib_priv(const struct net_device *dev)
 154 {
 155         struct rdma_netdev *rn = netdev_priv(dev);
 156 
 157         return rn->clnt_priv;
 158 }
 159 
 160 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
 161 struct ipoib_mcast {
 162         struct ib_sa_mcmember_rec mcmember;
 163         struct ib_sa_multicast   *mc;
 164         struct ipoib_ah          *ah;
 165 
 166         struct rb_node    rb_node;
 167         struct list_head  list;
 168 
 169         unsigned long created;
 170         unsigned long backoff;
 171         unsigned long delay_until;
 172 
 173         unsigned long flags;
 174         unsigned char logcount;
 175 
 176         struct list_head  neigh_list;
 177 
 178         struct sk_buff_head pkt_queue;
 179 
 180         struct net_device *dev;
 181         struct completion done;
 182 };
 183 
 184 struct ipoib_rx_buf {
 185         struct sk_buff *skb;
 186         u64             mapping[IPOIB_UD_RX_SG];
 187 };
 188 
 189 struct ipoib_tx_buf {
 190         struct sk_buff *skb;
 191         u64             mapping[MAX_SKB_FRAGS + 1];
 192 };
 193 
 194 struct ib_cm_id;
 195 
 196 struct ipoib_cm_data {
 197         __be32 qpn; /* High byte MUST be ignored on receive */
 198         __be32 mtu;
 199 };
 200 
 201 /*
 202  * Quoting 10.3.1 Queue Pair and EE Context States:
 203  *
 204  * Note, for QPs that are associated with an SRQ, the Consumer should take the
 205  * QP through the Error State before invoking a Destroy QP or a Modify QP to the
 206  * Reset State.  The Consumer may invoke the Destroy QP without first performing
 207  * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
 208  * Last WQE Reached Event. However, if the Consumer does not wait for the
 209  * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
 210  * leakage may occur. Therefore, it is good programming practice to tear down a
 211  * QP that is associated with an SRQ by using the following process:
 212  *
 213  * - Put the QP in the Error State
 214  * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
 215  * - either:
 216  *       drain the CQ by invoking the Poll CQ verb and either wait for CQ
 217  *       to be empty or the number of Poll CQ operations has exceeded
 218  *       CQ capacity size;
 219  * - or
 220  *       post another WR that completes on the same CQ and wait for this
 221  *       WR to return as a WC;
 222  * - and then invoke a Destroy QP or Reset QP.
 223  *
 224  * We use the second option and wait for a completion on the
 225  * same CQ before destroying QPs attached to our SRQ.
 226  */
 227 
 228 enum ipoib_cm_state {
 229         IPOIB_CM_RX_LIVE,
 230         IPOIB_CM_RX_ERROR, /* Ignored by stale task */
 231         IPOIB_CM_RX_FLUSH  /* Last WQE Reached event observed */
 232 };
 233 
 234 struct ipoib_cm_rx {
 235         struct ib_cm_id        *id;
 236         struct ib_qp           *qp;
 237         struct ipoib_cm_rx_buf *rx_ring;
 238         struct list_head        list;
 239         struct net_device      *dev;
 240         unsigned long           jiffies;
 241         enum ipoib_cm_state     state;
 242         int                     recv_count;
 243 };
 244 
 245 struct ipoib_cm_tx {
 246         struct ib_cm_id     *id;
 247         struct ib_qp        *qp;
 248         struct list_head     list;
 249         struct net_device   *dev;
 250         struct ipoib_neigh  *neigh;
 251         struct ipoib_tx_buf *tx_ring;
 252         unsigned int         tx_head;
 253         unsigned int         tx_tail;
 254         unsigned long        flags;
 255         u32                  mtu;
 256         unsigned int         max_send_sge;
 257 };
 258 
 259 struct ipoib_cm_rx_buf {
 260         struct sk_buff *skb;
 261         u64 mapping[IPOIB_CM_RX_SG];
 262 };
 263 
 264 struct ipoib_cm_dev_priv {
 265         struct ib_srq          *srq;
 266         struct ipoib_cm_rx_buf *srq_ring;
 267         struct ib_cm_id        *id;
 268         struct list_head        passive_ids;   /* state: LIVE */
 269         struct list_head        rx_error_list; /* state: ERROR */
 270         struct list_head        rx_flush_list; /* state: FLUSH, drain not started */
 271         struct list_head        rx_drain_list; /* state: FLUSH, drain started */
 272         struct list_head        rx_reap_list;  /* state: FLUSH, drain done */
 273         struct work_struct      start_task;
 274         struct work_struct      reap_task;
 275         struct work_struct      skb_task;
 276         struct work_struct      rx_reap_task;
 277         struct delayed_work     stale_task;
 278         struct sk_buff_head     skb_queue;
 279         struct list_head        start_list;
 280         struct list_head        reap_list;
 281         struct ib_wc            ibwc[IPOIB_NUM_WC];
 282         struct ib_sge           rx_sge[IPOIB_CM_RX_SG];
 283         struct ib_recv_wr       rx_wr;
 284         int                     nonsrq_conn_qp;
 285         int                     max_cm_mtu;
 286         int                     num_frags;
 287 };
 288 
 289 struct ipoib_ethtool_st {
 290         u16     coalesce_usecs;
 291         u16     max_coalesced_frames;
 292 };
 293 
 294 struct ipoib_neigh_table;
 295 
 296 struct ipoib_neigh_hash {
 297         struct ipoib_neigh_table       *ntbl;
 298         struct ipoib_neigh __rcu      **buckets;
 299         struct rcu_head                 rcu;
 300         u32                             mask;
 301         u32                             size;
 302 };
 303 
 304 struct ipoib_neigh_table {
 305         struct ipoib_neigh_hash __rcu  *htbl;
 306         atomic_t                        entries;
 307         struct completion               flushed;
 308         struct completion               deleted;
 309 };
 310 
 311 struct ipoib_qp_state_validate {
 312         struct work_struct work;
 313         struct ipoib_dev_priv   *priv;
 314 };
 315 
 316 /*
 317  * Device private locking: network stack tx_lock protects members used
 318  * in TX fast path, lock protects everything else.  lock nests inside
 319  * of tx_lock (ie tx_lock must be acquired first if needed).
 320  */
 321 struct ipoib_dev_priv {
 322         spinlock_t lock;
 323 
 324         struct net_device *dev;
 325         void (*next_priv_destructor)(struct net_device *dev);
 326 
 327         struct napi_struct send_napi;
 328         struct napi_struct recv_napi;
 329 
 330         unsigned long flags;
 331 
 332         /*
 333          * This protects access to the child_intfs list.
 334          * To READ from child_intfs the RTNL or vlan_rwsem read side must be
 335          * held.  To WRITE RTNL and the vlan_rwsem write side must be held (in
 336          * that order) This lock exists because we have a few contexts where
 337          * we need the child_intfs, but do not want to grab the RTNL.
 338          */
 339         struct rw_semaphore vlan_rwsem;
 340         struct mutex mcast_mutex;
 341 
 342         struct rb_root  path_tree;
 343         struct list_head path_list;
 344 
 345         struct ipoib_neigh_table ntbl;
 346 
 347         struct ipoib_mcast *broadcast;
 348         struct list_head multicast_list;
 349         struct rb_root multicast_tree;
 350 
 351         struct workqueue_struct *wq;
 352         struct delayed_work mcast_task;
 353         struct work_struct carrier_on_task;
 354         struct work_struct flush_light;
 355         struct work_struct flush_normal;
 356         struct work_struct flush_heavy;
 357         struct work_struct restart_task;
 358         struct delayed_work ah_reap_task;
 359         struct delayed_work neigh_reap_task;
 360         struct ib_device *ca;
 361         u8                port;
 362         u16               pkey;
 363         u16               pkey_index;
 364         struct ib_pd     *pd;
 365         struct ib_cq     *recv_cq;
 366         struct ib_cq     *send_cq;
 367         struct ib_qp     *qp;
 368         u32               qkey;
 369 
 370         union ib_gid local_gid;
 371         u32          local_lid;
 372 
 373         unsigned int admin_mtu;
 374         unsigned int mcast_mtu;
 375         unsigned int max_ib_mtu;
 376 
 377         struct ipoib_rx_buf *rx_ring;
 378 
 379         struct ipoib_tx_buf *tx_ring;
 380         /* cyclic ring variables for managing tx_ring, for UD only */
 381         unsigned int         tx_head;
 382         unsigned int         tx_tail;
 383         /* cyclic ring variables for counting overall outstanding send WRs */
 384         unsigned int         global_tx_head;
 385         unsigned int         global_tx_tail;
 386         struct ib_sge        tx_sge[MAX_SKB_FRAGS + 1];
 387         struct ib_ud_wr      tx_wr;
 388         struct ib_wc         send_wc[MAX_SEND_CQE];
 389 
 390         struct ib_recv_wr    rx_wr;
 391         struct ib_sge        rx_sge[IPOIB_UD_RX_SG];
 392 
 393         struct ib_wc ibwc[IPOIB_NUM_WC];
 394 
 395         struct list_head dead_ahs;
 396 
 397         struct ib_event_handler event_handler;
 398 
 399         struct net_device *parent;
 400         struct list_head child_intfs;
 401         struct list_head list;
 402         int    child_type;
 403 
 404 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 405         struct ipoib_cm_dev_priv cm;
 406 #endif
 407 
 408 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 409         struct list_head fs_list;
 410         struct dentry *mcg_dentry;
 411         struct dentry *path_dentry;
 412 #endif
 413         u64     hca_caps;
 414         struct ipoib_ethtool_st ethtool;
 415         unsigned int max_send_sge;
 416         bool sm_fullmember_sendonly_support;
 417         const struct net_device_ops     *rn_ops;
 418 };
 419 
 420 struct ipoib_ah {
 421         struct net_device *dev;
 422         struct ib_ah      *ah;
 423         struct list_head   list;
 424         struct kref        ref;
 425         unsigned int       last_send;
 426         int                valid;
 427 };
 428 
 429 struct ipoib_path {
 430         struct net_device    *dev;
 431         struct sa_path_rec pathrec;
 432         struct ipoib_ah      *ah;
 433         struct sk_buff_head   queue;
 434 
 435         struct list_head      neigh_list;
 436 
 437         int                   query_id;
 438         struct ib_sa_query   *query;
 439         struct completion     done;
 440 
 441         struct rb_node        rb_node;
 442         struct list_head      list;
 443 };
 444 
 445 struct ipoib_neigh {
 446         struct ipoib_ah    *ah;
 447 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 448         struct ipoib_cm_tx *cm;
 449 #endif
 450         u8     daddr[INFINIBAND_ALEN];
 451         struct sk_buff_head queue;
 452 
 453         struct net_device *dev;
 454 
 455         struct list_head    list;
 456         struct ipoib_neigh __rcu *hnext;
 457         struct rcu_head     rcu;
 458         atomic_t            refcnt;
 459         unsigned long       alive;
 460 };
 461 
 462 #define IPOIB_UD_MTU(ib_mtu)            (ib_mtu - IPOIB_ENCAP_LEN)
 463 #define IPOIB_UD_BUF_SIZE(ib_mtu)       (ib_mtu + IB_GRH_BYTES)
 464 
 465 void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
 466 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
 467 {
 468         if (atomic_dec_and_test(&neigh->refcnt))
 469                 ipoib_neigh_dtor(neigh);
 470 }
 471 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
 472 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
 473                                       struct net_device *dev);
 474 void ipoib_neigh_free(struct ipoib_neigh *neigh);
 475 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
 476 
 477 extern struct workqueue_struct *ipoib_workqueue;
 478 
 479 /* functions */
 480 
 481 int ipoib_rx_poll(struct napi_struct *napi, int budget);
 482 int ipoib_tx_poll(struct napi_struct *napi, int budget);
 483 void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr);
 484 void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr);
 485 
 486 struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
 487                                  struct ib_pd *pd, struct rdma_ah_attr *attr);
 488 void ipoib_free_ah(struct kref *kref);
 489 static inline void ipoib_put_ah(struct ipoib_ah *ah)
 490 {
 491         kref_put(&ah->ref, ipoib_free_ah);
 492 }
 493 int ipoib_open(struct net_device *dev);
 494 void ipoib_intf_free(struct net_device *dev);
 495 int ipoib_add_pkey_attr(struct net_device *dev);
 496 int ipoib_add_umcast_attr(struct net_device *dev);
 497 
 498 int ipoib_send(struct net_device *dev, struct sk_buff *skb,
 499                struct ib_ah *address, u32 dqpn);
 500 void ipoib_reap_ah(struct work_struct *work);
 501 
 502 struct ipoib_path *__path_find(struct net_device *dev, void *gid);
 503 void ipoib_mark_paths_invalid(struct net_device *dev);
 504 void ipoib_flush_paths(struct net_device *dev);
 505 struct net_device *ipoib_intf_alloc(struct ib_device *hca, u8 port,
 506                                     const char *format);
 507 int ipoib_intf_init(struct ib_device *hca, u8 port, const char *format,
 508                     struct net_device *dev);
 509 void ipoib_ib_tx_timer_func(struct timer_list *t);
 510 void ipoib_ib_dev_flush_light(struct work_struct *work);
 511 void ipoib_ib_dev_flush_normal(struct work_struct *work);
 512 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
 513 void ipoib_pkey_event(struct work_struct *work);
 514 void ipoib_ib_dev_cleanup(struct net_device *dev);
 515 
 516 int ipoib_ib_dev_open_default(struct net_device *dev);
 517 int ipoib_ib_dev_open(struct net_device *dev);
 518 int ipoib_ib_dev_stop(struct net_device *dev);
 519 void ipoib_ib_dev_up(struct net_device *dev);
 520 void ipoib_ib_dev_down(struct net_device *dev);
 521 int ipoib_ib_dev_stop_default(struct net_device *dev);
 522 void ipoib_pkey_dev_check_presence(struct net_device *dev);
 523 
 524 void ipoib_mcast_join_task(struct work_struct *work);
 525 void ipoib_mcast_carrier_on_task(struct work_struct *work);
 526 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
 527 
 528 void ipoib_mcast_restart_task(struct work_struct *work);
 529 void ipoib_mcast_start_thread(struct net_device *dev);
 530 int ipoib_mcast_stop_thread(struct net_device *dev);
 531 
 532 void ipoib_mcast_dev_down(struct net_device *dev);
 533 void ipoib_mcast_dev_flush(struct net_device *dev);
 534 
 535 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
 536 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
 537                         struct ipoib_tx_buf *tx_req);
 538 
 539 struct rtnl_link_ops *ipoib_get_link_ops(void);
 540 
 541 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
 542                                    struct ipoib_tx_buf *tx_req)
 543 {
 544         int i, off;
 545         struct sk_buff *skb = tx_req->skb;
 546         skb_frag_t *frags = skb_shinfo(skb)->frags;
 547         int nr_frags = skb_shinfo(skb)->nr_frags;
 548         u64 *mapping = tx_req->mapping;
 549 
 550         if (skb_headlen(skb)) {
 551                 priv->tx_sge[0].addr         = mapping[0];
 552                 priv->tx_sge[0].length       = skb_headlen(skb);
 553                 off = 1;
 554         } else
 555                 off = 0;
 556 
 557         for (i = 0; i < nr_frags; ++i) {
 558                 priv->tx_sge[i + off].addr = mapping[i + off];
 559                 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
 560         }
 561         priv->tx_wr.wr.num_sge       = nr_frags + off;
 562 }
 563 
 564 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 565 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 566 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
 567 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
 568                                   union ib_gid *gid,
 569                                   unsigned long *created,
 570                                   unsigned int *queuelen,
 571                                   unsigned int *complete,
 572                                   unsigned int *send_only);
 573 
 574 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
 575 int ipoib_path_iter_next(struct ipoib_path_iter *iter);
 576 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 577                           struct ipoib_path *path);
 578 #endif
 579 
 580 int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
 581                        union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
 582 int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
 583                        union ib_gid *mgid, u16 mlid);
 584 void ipoib_mcast_remove_list(struct list_head *remove_list);
 585 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
 586                                 struct list_head *remove_list);
 587 
 588 int ipoib_init_qp(struct net_device *dev);
 589 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
 590 void ipoib_transport_dev_cleanup(struct net_device *dev);
 591 
 592 void ipoib_event(struct ib_event_handler *handler,
 593                  struct ib_event *record);
 594 
 595 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
 596 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
 597 
 598 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
 599                      u16 pkey, int child_type);
 600 
 601 int  __init ipoib_netlink_init(void);
 602 void __exit ipoib_netlink_fini(void);
 603 
 604 void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
 605 int  ipoib_set_mode(struct net_device *dev, const char *buf);
 606 
 607 void ipoib_setup_common(struct net_device *dev);
 608 
 609 void ipoib_pkey_open(struct ipoib_dev_priv *priv);
 610 void ipoib_drain_cq(struct net_device *dev);
 611 
 612 void ipoib_set_ethtool_ops(struct net_device *dev);
 613 
 614 #define IPOIB_FLAGS_RC          0x80
 615 #define IPOIB_FLAGS_UC          0x40
 616 
 617 /* We don't support UC connections at the moment */
 618 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 619 
 620 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 621 
 622 extern int ipoib_max_conn_qp;
 623 
 624 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 625 {
 626         struct ipoib_dev_priv *priv = ipoib_priv(dev);
 627         return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
 628                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 629 }
 630 
 631 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 632 {
 633         struct ipoib_dev_priv *priv = ipoib_priv(dev);
 634         return IPOIB_CM_SUPPORTED(hwaddr) &&
 635                 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 636 }
 637 
 638 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 639 
 640 {
 641         return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
 642 }
 643 
 644 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 645 {
 646         return neigh->cm;
 647 }
 648 
 649 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 650 {
 651         neigh->cm = tx;
 652 }
 653 
 654 static inline int ipoib_cm_has_srq(struct net_device *dev)
 655 {
 656         struct ipoib_dev_priv *priv = ipoib_priv(dev);
 657         return !!priv->cm.srq;
 658 }
 659 
 660 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 661 {
 662         struct ipoib_dev_priv *priv = ipoib_priv(dev);
 663         return priv->cm.max_cm_mtu;
 664 }
 665 
 666 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
 667 int ipoib_cm_dev_open(struct net_device *dev);
 668 void ipoib_cm_dev_stop(struct net_device *dev);
 669 int ipoib_cm_dev_init(struct net_device *dev);
 670 int ipoib_cm_add_mode_attr(struct net_device *dev);
 671 void ipoib_cm_dev_cleanup(struct net_device *dev);
 672 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 673                                     struct ipoib_neigh *neigh);
 674 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
 675 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 676                            unsigned int mtu);
 677 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
 678 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
 679 #else
 680 
 681 struct ipoib_cm_tx;
 682 
 683 #define ipoib_max_conn_qp 0
 684 
 685 static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 686 {
 687         return 0;
 688 }
 689 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 690 
 691 {
 692         return 0;
 693 }
 694 
 695 static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
 696 
 697 {
 698         return 0;
 699 }
 700 
 701 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
 702 {
 703         return NULL;
 704 }
 705 
 706 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
 707 {
 708 }
 709 
 710 static inline int ipoib_cm_has_srq(struct net_device *dev)
 711 {
 712         return 0;
 713 }
 714 
 715 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
 716 {
 717         return 0;
 718 }
 719 
 720 static inline
 721 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 722 {
 723         return;
 724 }
 725 
 726 static inline
 727 int ipoib_cm_dev_open(struct net_device *dev)
 728 {
 729         return 0;
 730 }
 731 
 732 static inline
 733 void ipoib_cm_dev_stop(struct net_device *dev)
 734 {
 735         return;
 736 }
 737 
 738 static inline
 739 int ipoib_cm_dev_init(struct net_device *dev)
 740 {
 741         return -EOPNOTSUPP;
 742 }
 743 
 744 static inline
 745 void ipoib_cm_dev_cleanup(struct net_device *dev)
 746 {
 747         return;
 748 }
 749 
 750 static inline
 751 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
 752                                     struct ipoib_neigh *neigh)
 753 {
 754         return NULL;
 755 }
 756 
 757 static inline
 758 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 759 {
 760         return;
 761 }
 762 
 763 static inline
 764 int ipoib_cm_add_mode_attr(struct net_device *dev)
 765 {
 766         return 0;
 767 }
 768 
 769 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
 770                                          unsigned int mtu)
 771 {
 772         dev_kfree_skb_any(skb);
 773 }
 774 
 775 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
 776 {
 777 }
 778 
 779 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 780 {
 781 }
 782 #endif
 783 
 784 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 785 void ipoib_create_debug_files(struct net_device *dev);
 786 void ipoib_delete_debug_files(struct net_device *dev);
 787 void ipoib_register_debugfs(void);
 788 void ipoib_unregister_debugfs(void);
 789 #else
 790 static inline void ipoib_create_debug_files(struct net_device *dev) { }
 791 static inline void ipoib_delete_debug_files(struct net_device *dev) { }
 792 static inline void ipoib_register_debugfs(void) { }
 793 static inline void ipoib_unregister_debugfs(void) { }
 794 #endif
 795 
 796 #define ipoib_printk(level, priv, format, arg...)       \
 797         printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
 798 #define ipoib_warn(priv, format, arg...)                \
 799 do {                                                    \
 800         static DEFINE_RATELIMIT_STATE(_rs,              \
 801                 10 * HZ /*10 seconds */,                \
 802                 100);           \
 803         if (__ratelimit(&_rs))                          \
 804                 ipoib_printk(KERN_WARNING, priv, format , ## arg);\
 805 } while (0)
 806 
 807 extern int ipoib_sendq_size;
 808 extern int ipoib_recvq_size;
 809 
 810 extern struct ib_sa_client ipoib_sa_client;
 811 
 812 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 813 extern int ipoib_debug_level;
 814 
 815 #define ipoib_dbg(priv, format, arg...)                 \
 816         do {                                            \
 817                 if (ipoib_debug_level > 0)                      \
 818                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 819         } while (0)
 820 #define ipoib_dbg_mcast(priv, format, arg...)           \
 821         do {                                            \
 822                 if (mcast_debug_level > 0)              \
 823                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 824         } while (0)
 825 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 826 #define ipoib_dbg(priv, format, arg...)                 \
 827         do { (void) (priv); } while (0)
 828 #define ipoib_dbg_mcast(priv, format, arg...)           \
 829         do { (void) (priv); } while (0)
 830 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
 831 
 832 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
 833 #define ipoib_dbg_data(priv, format, arg...)            \
 834         do {                                            \
 835                 if (data_debug_level > 0)               \
 836                         ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
 837         } while (0)
 838 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 839 #define ipoib_dbg_data(priv, format, arg...)            \
 840         do { (void) (priv); } while (0)
 841 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
 842 
 843 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
 844 
 845 extern const char ipoib_driver_version[];
 846 
 847 #endif /* _IPOIB_H */
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root/drivers/infiniband/ulp/ipoib/ipoib.h

INCLUDED FROM

DEFINITIONS
