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_PKEY_STOP = 4, 90 IPOIB_FLAG_SUBINTERFACE = 5, 91 IPOIB_MCAST_RUN = 6, 92 IPOIB_STOP_REAPER = 7, 93 IPOIB_FLAG_ADMIN_CM = 9, 94 IPOIB_FLAG_UMCAST = 10, 95 IPOIB_STOP_NEIGH_GC = 11, 96 IPOIB_NEIGH_TBL_FLUSH = 12, 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 IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */ 103 IPOIB_MCAST_FLAG_ATTACHED = 3, 104 105 MAX_SEND_CQE = 16, 106 IPOIB_CM_COPYBREAK = 256, 107 }; 108 109 #define IPOIB_OP_RECV (1ul << 31) 110 #ifdef CONFIG_INFINIBAND_IPOIB_CM 111 #define IPOIB_OP_CM (1ul << 30) 112 #else 113 #define IPOIB_OP_CM (0) 114 #endif 115 116 /* structs */ 117 118 struct ipoib_header { 119 __be16 proto; 120 u16 reserved; 121 }; 122 123 struct ipoib_cb { 124 struct qdisc_skb_cb qdisc_cb; 125 u8 hwaddr[INFINIBAND_ALEN]; 126 }; 127 128 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */ 129 struct ipoib_mcast { 130 struct ib_sa_mcmember_rec mcmember; 131 struct ib_sa_multicast *mc; 132 struct ipoib_ah *ah; 133 134 struct rb_node rb_node; 135 struct list_head list; 136 137 unsigned long created; 138 unsigned long backoff; 139 140 unsigned long flags; 141 unsigned char logcount; 142 143 struct list_head neigh_list; 144 145 struct sk_buff_head pkt_queue; 146 147 struct net_device *dev; 148 }; 149 150 struct ipoib_rx_buf { 151 struct sk_buff *skb; 152 u64 mapping[IPOIB_UD_RX_SG]; 153 }; 154 155 struct ipoib_tx_buf { 156 struct sk_buff *skb; 157 u64 mapping[MAX_SKB_FRAGS + 1]; 158 }; 159 160 struct ipoib_cm_tx_buf { 161 struct sk_buff *skb; 162 u64 mapping; 163 }; 164 165 struct ib_cm_id; 166 167 struct ipoib_cm_data { 168 __be32 qpn; /* High byte MUST be ignored on receive */ 169 __be32 mtu; 170 }; 171 172 /* 173 * Quoting 10.3.1 Queue Pair and EE Context States: 174 * 175 * Note, for QPs that are associated with an SRQ, the Consumer should take the 176 * QP through the Error State before invoking a Destroy QP or a Modify QP to the 177 * Reset State. The Consumer may invoke the Destroy QP without first performing 178 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous 179 * Last WQE Reached Event. However, if the Consumer does not wait for the 180 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment 181 * leakage may occur. Therefore, it is good programming practice to tear down a 182 * QP that is associated with an SRQ by using the following process: 183 * 184 * - Put the QP in the Error State 185 * - Wait for the Affiliated Asynchronous Last WQE Reached Event; 186 * - either: 187 * drain the CQ by invoking the Poll CQ verb and either wait for CQ 188 * to be empty or the number of Poll CQ operations has exceeded 189 * CQ capacity size; 190 * - or 191 * post another WR that completes on the same CQ and wait for this 192 * WR to return as a WC; 193 * - and then invoke a Destroy QP or Reset QP. 194 * 195 * We use the second option and wait for a completion on the 196 * same CQ before destroying QPs attached to our SRQ. 197 */ 198 199 enum ipoib_cm_state { 200 IPOIB_CM_RX_LIVE, 201 IPOIB_CM_RX_ERROR, /* Ignored by stale task */ 202 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */ 203 }; 204 205 struct ipoib_cm_rx { 206 struct ib_cm_id *id; 207 struct ib_qp *qp; 208 struct ipoib_cm_rx_buf *rx_ring; 209 struct list_head list; 210 struct net_device *dev; 211 unsigned long jiffies; 212 enum ipoib_cm_state state; 213 int recv_count; 214 }; 215 216 struct ipoib_cm_tx { 217 struct ib_cm_id *id; 218 struct ib_qp *qp; 219 struct list_head list; 220 struct net_device *dev; 221 struct ipoib_neigh *neigh; 222 struct ipoib_path *path; 223 struct ipoib_cm_tx_buf *tx_ring; 224 unsigned tx_head; 225 unsigned tx_tail; 226 unsigned long flags; 227 u32 mtu; 228 }; 229 230 struct ipoib_cm_rx_buf { 231 struct sk_buff *skb; 232 u64 mapping[IPOIB_CM_RX_SG]; 233 }; 234 235 struct ipoib_cm_dev_priv { 236 struct ib_srq *srq; 237 struct ipoib_cm_rx_buf *srq_ring; 238 struct ib_cm_id *id; 239 struct list_head passive_ids; /* state: LIVE */ 240 struct list_head rx_error_list; /* state: ERROR */ 241 struct list_head rx_flush_list; /* state: FLUSH, drain not started */ 242 struct list_head rx_drain_list; /* state: FLUSH, drain started */ 243 struct list_head rx_reap_list; /* state: FLUSH, drain done */ 244 struct work_struct start_task; 245 struct work_struct reap_task; 246 struct work_struct skb_task; 247 struct work_struct rx_reap_task; 248 struct delayed_work stale_task; 249 struct sk_buff_head skb_queue; 250 struct list_head start_list; 251 struct list_head reap_list; 252 struct ib_wc ibwc[IPOIB_NUM_WC]; 253 struct ib_sge rx_sge[IPOIB_CM_RX_SG]; 254 struct ib_recv_wr rx_wr; 255 int nonsrq_conn_qp; 256 int max_cm_mtu; 257 int num_frags; 258 }; 259 260 struct ipoib_ethtool_st { 261 u16 coalesce_usecs; 262 u16 max_coalesced_frames; 263 }; 264 265 struct ipoib_neigh_table; 266 267 struct ipoib_neigh_hash { 268 struct ipoib_neigh_table *ntbl; 269 struct ipoib_neigh __rcu **buckets; 270 struct rcu_head rcu; 271 u32 mask; 272 u32 size; 273 }; 274 275 struct ipoib_neigh_table { 276 struct ipoib_neigh_hash __rcu *htbl; 277 atomic_t entries; 278 struct completion flushed; 279 struct completion deleted; 280 }; 281 282 /* 283 * Device private locking: network stack tx_lock protects members used 284 * in TX fast path, lock protects everything else. lock nests inside 285 * of tx_lock (ie tx_lock must be acquired first if needed). 286 */ 287 struct ipoib_dev_priv { 288 spinlock_t lock; 289 290 struct net_device *dev; 291 292 struct napi_struct napi; 293 294 unsigned long flags; 295 296 struct mutex vlan_mutex; 297 298 struct rb_root path_tree; 299 struct list_head path_list; 300 301 struct ipoib_neigh_table ntbl; 302 303 struct ipoib_mcast *broadcast; 304 struct list_head multicast_list; 305 struct rb_root multicast_tree; 306 307 struct delayed_work pkey_poll_task; 308 struct delayed_work mcast_task; 309 struct work_struct carrier_on_task; 310 struct work_struct flush_light; 311 struct work_struct flush_normal; 312 struct work_struct flush_heavy; 313 struct work_struct restart_task; 314 struct delayed_work ah_reap_task; 315 struct delayed_work neigh_reap_task; 316 struct ib_device *ca; 317 u8 port; 318 u16 pkey; 319 u16 pkey_index; 320 struct ib_pd *pd; 321 struct ib_mr *mr; 322 struct ib_cq *recv_cq; 323 struct ib_cq *send_cq; 324 struct ib_qp *qp; 325 u32 qkey; 326 327 union ib_gid local_gid; 328 u16 local_lid; 329 330 unsigned int admin_mtu; 331 unsigned int mcast_mtu; 332 unsigned int max_ib_mtu; 333 334 struct ipoib_rx_buf *rx_ring; 335 336 struct ipoib_tx_buf *tx_ring; 337 unsigned tx_head; 338 unsigned tx_tail; 339 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; 340 struct ib_send_wr tx_wr; 341 unsigned tx_outstanding; 342 struct ib_wc send_wc[MAX_SEND_CQE]; 343 344 struct ib_recv_wr rx_wr; 345 struct ib_sge rx_sge[IPOIB_UD_RX_SG]; 346 347 struct ib_wc ibwc[IPOIB_NUM_WC]; 348 349 struct list_head dead_ahs; 350 351 struct ib_event_handler event_handler; 352 353 struct net_device *parent; 354 struct list_head child_intfs; 355 struct list_head list; 356 357 #ifdef CONFIG_INFINIBAND_IPOIB_CM 358 struct ipoib_cm_dev_priv cm; 359 #endif 360 361 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 362 struct list_head fs_list; 363 struct dentry *mcg_dentry; 364 struct dentry *path_dentry; 365 #endif 366 int hca_caps; 367 struct ipoib_ethtool_st ethtool; 368 struct timer_list poll_timer; 369 }; 370 371 struct ipoib_ah { 372 struct net_device *dev; 373 struct ib_ah *ah; 374 struct list_head list; 375 struct kref ref; 376 unsigned last_send; 377 }; 378 379 struct ipoib_path { 380 struct net_device *dev; 381 struct ib_sa_path_rec pathrec; 382 struct ipoib_ah *ah; 383 struct sk_buff_head queue; 384 385 struct list_head neigh_list; 386 387 int query_id; 388 struct ib_sa_query *query; 389 struct completion done; 390 391 struct rb_node rb_node; 392 struct list_head list; 393 int valid; 394 }; 395 396 struct ipoib_neigh { 397 struct ipoib_ah *ah; 398 #ifdef CONFIG_INFINIBAND_IPOIB_CM 399 struct ipoib_cm_tx *cm; 400 #endif 401 u8 daddr[INFINIBAND_ALEN]; 402 struct sk_buff_head queue; 403 404 struct net_device *dev; 405 406 struct list_head list; 407 struct ipoib_neigh __rcu *hnext; 408 struct rcu_head rcu; 409 atomic_t refcnt; 410 unsigned long alive; 411 }; 412 413 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN) 414 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES) 415 416 static inline int ipoib_ud_need_sg(unsigned int ib_mtu) 417 { 418 return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE; 419 } 420 421 void ipoib_neigh_dtor(struct ipoib_neigh *neigh); 422 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh) 423 { 424 if (atomic_dec_and_test(&neigh->refcnt)) 425 ipoib_neigh_dtor(neigh); 426 } 427 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr); 428 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr, 429 struct net_device *dev); 430 void ipoib_neigh_free(struct ipoib_neigh *neigh); 431 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid); 432 433 extern struct workqueue_struct *ipoib_workqueue; 434 435 /* functions */ 436 437 int ipoib_poll(struct napi_struct *napi, int budget); 438 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr); 439 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr); 440 441 struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 442 struct ib_pd *pd, struct ib_ah_attr *attr); 443 void ipoib_free_ah(struct kref *kref); 444 static inline void ipoib_put_ah(struct ipoib_ah *ah) 445 { 446 kref_put(&ah->ref, ipoib_free_ah); 447 } 448 int ipoib_open(struct net_device *dev); 449 int ipoib_add_pkey_attr(struct net_device *dev); 450 int ipoib_add_umcast_attr(struct net_device *dev); 451 452 void ipoib_send(struct net_device *dev, struct sk_buff *skb, 453 struct ipoib_ah *address, u32 qpn); 454 void ipoib_reap_ah(struct work_struct *work); 455 456 void ipoib_mark_paths_invalid(struct net_device *dev); 457 void ipoib_flush_paths(struct net_device *dev); 458 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format); 459 460 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 461 void ipoib_ib_dev_flush_light(struct work_struct *work); 462 void ipoib_ib_dev_flush_normal(struct work_struct *work); 463 void ipoib_ib_dev_flush_heavy(struct work_struct *work); 464 void ipoib_pkey_event(struct work_struct *work); 465 void ipoib_ib_dev_cleanup(struct net_device *dev); 466 467 int ipoib_ib_dev_open(struct net_device *dev); 468 int ipoib_ib_dev_up(struct net_device *dev); 469 int ipoib_ib_dev_down(struct net_device *dev, int flush); 470 int ipoib_ib_dev_stop(struct net_device *dev, int flush); 471 472 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 473 void ipoib_dev_cleanup(struct net_device *dev); 474 475 void ipoib_mcast_join_task(struct work_struct *work); 476 void ipoib_mcast_carrier_on_task(struct work_struct *work); 477 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb); 478 479 void ipoib_mcast_restart_task(struct work_struct *work); 480 int ipoib_mcast_start_thread(struct net_device *dev); 481 int ipoib_mcast_stop_thread(struct net_device *dev, int flush); 482 483 void ipoib_mcast_dev_down(struct net_device *dev); 484 void ipoib_mcast_dev_flush(struct net_device *dev); 485 486 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 487 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 488 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 489 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 490 union ib_gid *gid, 491 unsigned long *created, 492 unsigned int *queuelen, 493 unsigned int *complete, 494 unsigned int *send_only); 495 496 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 497 int ipoib_path_iter_next(struct ipoib_path_iter *iter); 498 void ipoib_path_iter_read(struct ipoib_path_iter *iter, 499 struct ipoib_path *path); 500 #endif 501 502 int ipoib_mcast_attach(struct net_device *dev, u16 mlid, 503 union ib_gid *mgid, int set_qkey); 504 505 int ipoib_init_qp(struct net_device *dev); 506 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 507 void ipoib_transport_dev_cleanup(struct net_device *dev); 508 509 void ipoib_event(struct ib_event_handler *handler, 510 struct ib_event *record); 511 512 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 513 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 514 515 void ipoib_pkey_poll(struct work_struct *work); 516 int ipoib_pkey_dev_delay_open(struct net_device *dev); 517 void ipoib_drain_cq(struct net_device *dev); 518 519 void ipoib_set_ethtool_ops(struct net_device *dev); 520 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca); 521 522 #ifdef CONFIG_INFINIBAND_IPOIB_CM 523 524 #define IPOIB_FLAGS_RC 0x80 525 #define IPOIB_FLAGS_UC 0x40 526 527 /* We don't support UC connections at the moment */ 528 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC)) 529 530 extern int ipoib_max_conn_qp; 531 532 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 533 { 534 struct ipoib_dev_priv *priv = netdev_priv(dev); 535 return IPOIB_CM_SUPPORTED(dev->dev_addr) && 536 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 537 } 538 539 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 540 { 541 struct ipoib_dev_priv *priv = netdev_priv(dev); 542 return IPOIB_CM_SUPPORTED(hwaddr) && 543 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 544 } 545 546 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 547 548 { 549 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags); 550 } 551 552 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 553 { 554 return neigh->cm; 555 } 556 557 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 558 { 559 neigh->cm = tx; 560 } 561 562 static inline int ipoib_cm_has_srq(struct net_device *dev) 563 { 564 struct ipoib_dev_priv *priv = netdev_priv(dev); 565 return !!priv->cm.srq; 566 } 567 568 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 569 { 570 struct ipoib_dev_priv *priv = netdev_priv(dev); 571 return priv->cm.max_cm_mtu; 572 } 573 574 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx); 575 int ipoib_cm_dev_open(struct net_device *dev); 576 void ipoib_cm_dev_stop(struct net_device *dev); 577 int ipoib_cm_dev_init(struct net_device *dev); 578 int ipoib_cm_add_mode_attr(struct net_device *dev); 579 void ipoib_cm_dev_cleanup(struct net_device *dev); 580 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 581 struct ipoib_neigh *neigh); 582 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx); 583 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 584 unsigned int mtu); 585 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc); 586 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc); 587 #else 588 589 struct ipoib_cm_tx; 590 591 #define ipoib_max_conn_qp 0 592 593 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 594 { 595 return 0; 596 } 597 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 598 599 { 600 return 0; 601 } 602 603 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 604 605 { 606 return 0; 607 } 608 609 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 610 { 611 return NULL; 612 } 613 614 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 615 { 616 } 617 618 static inline int ipoib_cm_has_srq(struct net_device *dev) 619 { 620 return 0; 621 } 622 623 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 624 { 625 return 0; 626 } 627 628 static inline 629 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx) 630 { 631 return; 632 } 633 634 static inline 635 int ipoib_cm_dev_open(struct net_device *dev) 636 { 637 return 0; 638 } 639 640 static inline 641 void ipoib_cm_dev_stop(struct net_device *dev) 642 { 643 return; 644 } 645 646 static inline 647 int ipoib_cm_dev_init(struct net_device *dev) 648 { 649 return -ENOSYS; 650 } 651 652 static inline 653 void ipoib_cm_dev_cleanup(struct net_device *dev) 654 { 655 return; 656 } 657 658 static inline 659 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 660 struct ipoib_neigh *neigh) 661 { 662 return NULL; 663 } 664 665 static inline 666 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx) 667 { 668 return; 669 } 670 671 static inline 672 int ipoib_cm_add_mode_attr(struct net_device *dev) 673 { 674 return 0; 675 } 676 677 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 678 unsigned int mtu) 679 { 680 dev_kfree_skb_any(skb); 681 } 682 683 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) 684 { 685 } 686 687 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) 688 { 689 } 690 #endif 691 692 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 693 void ipoib_create_debug_files(struct net_device *dev); 694 void ipoib_delete_debug_files(struct net_device *dev); 695 int ipoib_register_debugfs(void); 696 void ipoib_unregister_debugfs(void); 697 #else 698 static inline void ipoib_create_debug_files(struct net_device *dev) { } 699 static inline void ipoib_delete_debug_files(struct net_device *dev) { } 700 static inline int ipoib_register_debugfs(void) { return 0; } 701 static inline void ipoib_unregister_debugfs(void) { } 702 #endif 703 704 #define ipoib_printk(level, priv, format, arg...) \ 705 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 706 #define ipoib_warn(priv, format, arg...) \ 707 ipoib_printk(KERN_WARNING, priv, format , ## arg) 708 709 extern int ipoib_sendq_size; 710 extern int ipoib_recvq_size; 711 712 extern struct ib_sa_client ipoib_sa_client; 713 714 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 715 extern int ipoib_debug_level; 716 717 #define ipoib_dbg(priv, format, arg...) \ 718 do { \ 719 if (ipoib_debug_level > 0) \ 720 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 721 } while (0) 722 #define ipoib_dbg_mcast(priv, format, arg...) \ 723 do { \ 724 if (mcast_debug_level > 0) \ 725 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 726 } while (0) 727 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 728 #define ipoib_dbg(priv, format, arg...) \ 729 do { (void) (priv); } while (0) 730 #define ipoib_dbg_mcast(priv, format, arg...) \ 731 do { (void) (priv); } while (0) 732 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 733 734 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 735 #define ipoib_dbg_data(priv, format, arg...) \ 736 do { \ 737 if (data_debug_level > 0) \ 738 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 739 } while (0) 740 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 741 #define ipoib_dbg_data(priv, format, arg...) \ 742 do { (void) (priv); } while (0) 743 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 744 745 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff) 746 747 #endif /* _IPOIB_H */ 748