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