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 IPOIB_MCAST_JOIN_STARTED = 4, 105 106 MAX_SEND_CQE = 16, 107 IPOIB_CM_COPYBREAK = 256, 108 109 IPOIB_NON_CHILD = 0, 110 IPOIB_LEGACY_CHILD = 1, 111 IPOIB_RTNL_CHILD = 2, 112 }; 113 114 #define IPOIB_OP_RECV (1ul << 31) 115 #ifdef CONFIG_INFINIBAND_IPOIB_CM 116 #define IPOIB_OP_CM (1ul << 30) 117 #else 118 #define IPOIB_OP_CM (0) 119 #endif 120 121 #define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF)) 122 123 /* structs */ 124 125 struct ipoib_header { 126 __be16 proto; 127 u16 reserved; 128 }; 129 130 struct ipoib_cb { 131 struct qdisc_skb_cb qdisc_cb; 132 u8 hwaddr[INFINIBAND_ALEN]; 133 }; 134 135 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */ 136 struct ipoib_mcast { 137 struct ib_sa_mcmember_rec mcmember; 138 struct ib_sa_multicast *mc; 139 struct ipoib_ah *ah; 140 141 struct rb_node rb_node; 142 struct list_head list; 143 144 unsigned long created; 145 unsigned long backoff; 146 147 unsigned long flags; 148 unsigned char logcount; 149 150 struct list_head neigh_list; 151 152 struct sk_buff_head pkt_queue; 153 154 struct net_device *dev; 155 struct completion done; 156 }; 157 158 struct ipoib_rx_buf { 159 struct sk_buff *skb; 160 u64 mapping[IPOIB_UD_RX_SG]; 161 }; 162 163 struct ipoib_tx_buf { 164 struct sk_buff *skb; 165 u64 mapping[MAX_SKB_FRAGS + 1]; 166 }; 167 168 struct ipoib_cm_tx_buf { 169 struct sk_buff *skb; 170 u64 mapping; 171 }; 172 173 struct ib_cm_id; 174 175 struct ipoib_cm_data { 176 __be32 qpn; /* High byte MUST be ignored on receive */ 177 __be32 mtu; 178 }; 179 180 /* 181 * Quoting 10.3.1 Queue Pair and EE Context States: 182 * 183 * Note, for QPs that are associated with an SRQ, the Consumer should take the 184 * QP through the Error State before invoking a Destroy QP or a Modify QP to the 185 * Reset State. The Consumer may invoke the Destroy QP without first performing 186 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous 187 * Last WQE Reached Event. However, if the Consumer does not wait for the 188 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment 189 * leakage may occur. Therefore, it is good programming practice to tear down a 190 * QP that is associated with an SRQ by using the following process: 191 * 192 * - Put the QP in the Error State 193 * - Wait for the Affiliated Asynchronous Last WQE Reached Event; 194 * - either: 195 * drain the CQ by invoking the Poll CQ verb and either wait for CQ 196 * to be empty or the number of Poll CQ operations has exceeded 197 * CQ capacity size; 198 * - or 199 * post another WR that completes on the same CQ and wait for this 200 * WR to return as a WC; 201 * - and then invoke a Destroy QP or Reset QP. 202 * 203 * We use the second option and wait for a completion on the 204 * same CQ before destroying QPs attached to our SRQ. 205 */ 206 207 enum ipoib_cm_state { 208 IPOIB_CM_RX_LIVE, 209 IPOIB_CM_RX_ERROR, /* Ignored by stale task */ 210 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */ 211 }; 212 213 struct ipoib_cm_rx { 214 struct ib_cm_id *id; 215 struct ib_qp *qp; 216 struct ipoib_cm_rx_buf *rx_ring; 217 struct list_head list; 218 struct net_device *dev; 219 unsigned long jiffies; 220 enum ipoib_cm_state state; 221 int recv_count; 222 }; 223 224 struct ipoib_cm_tx { 225 struct ib_cm_id *id; 226 struct ib_qp *qp; 227 struct list_head list; 228 struct net_device *dev; 229 struct ipoib_neigh *neigh; 230 struct ipoib_path *path; 231 struct ipoib_cm_tx_buf *tx_ring; 232 unsigned tx_head; 233 unsigned tx_tail; 234 unsigned long flags; 235 u32 mtu; 236 }; 237 238 struct ipoib_cm_rx_buf { 239 struct sk_buff *skb; 240 u64 mapping[IPOIB_CM_RX_SG]; 241 }; 242 243 struct ipoib_cm_dev_priv { 244 struct ib_srq *srq; 245 struct ipoib_cm_rx_buf *srq_ring; 246 struct ib_cm_id *id; 247 struct list_head passive_ids; /* state: LIVE */ 248 struct list_head rx_error_list; /* state: ERROR */ 249 struct list_head rx_flush_list; /* state: FLUSH, drain not started */ 250 struct list_head rx_drain_list; /* state: FLUSH, drain started */ 251 struct list_head rx_reap_list; /* state: FLUSH, drain done */ 252 struct work_struct start_task; 253 struct work_struct reap_task; 254 struct work_struct skb_task; 255 struct work_struct rx_reap_task; 256 struct delayed_work stale_task; 257 struct sk_buff_head skb_queue; 258 struct list_head start_list; 259 struct list_head reap_list; 260 struct ib_wc ibwc[IPOIB_NUM_WC]; 261 struct ib_sge rx_sge[IPOIB_CM_RX_SG]; 262 struct ib_recv_wr rx_wr; 263 int nonsrq_conn_qp; 264 int max_cm_mtu; 265 int num_frags; 266 }; 267 268 struct ipoib_ethtool_st { 269 u16 coalesce_usecs; 270 u16 max_coalesced_frames; 271 }; 272 273 struct ipoib_neigh_table; 274 275 struct ipoib_neigh_hash { 276 struct ipoib_neigh_table *ntbl; 277 struct ipoib_neigh __rcu **buckets; 278 struct rcu_head rcu; 279 u32 mask; 280 u32 size; 281 }; 282 283 struct ipoib_neigh_table { 284 struct ipoib_neigh_hash __rcu *htbl; 285 atomic_t entries; 286 struct completion flushed; 287 struct completion deleted; 288 }; 289 290 /* 291 * Device private locking: network stack tx_lock protects members used 292 * in TX fast path, lock protects everything else. lock nests inside 293 * of tx_lock (ie tx_lock must be acquired first if needed). 294 */ 295 struct ipoib_dev_priv { 296 spinlock_t lock; 297 298 struct net_device *dev; 299 300 struct napi_struct napi; 301 302 unsigned long flags; 303 304 struct rw_semaphore vlan_rwsem; 305 306 struct rb_root path_tree; 307 struct list_head path_list; 308 309 struct ipoib_neigh_table ntbl; 310 311 struct ipoib_mcast *broadcast; 312 struct list_head multicast_list; 313 struct rb_root multicast_tree; 314 315 struct delayed_work pkey_poll_task; 316 struct delayed_work mcast_task; 317 struct work_struct carrier_on_task; 318 struct work_struct flush_light; 319 struct work_struct flush_normal; 320 struct work_struct flush_heavy; 321 struct work_struct restart_task; 322 struct delayed_work ah_reap_task; 323 struct delayed_work neigh_reap_task; 324 struct ib_device *ca; 325 u8 port; 326 u16 pkey; 327 u16 pkey_index; 328 struct ib_pd *pd; 329 struct ib_mr *mr; 330 struct ib_cq *recv_cq; 331 struct ib_cq *send_cq; 332 struct ib_qp *qp; 333 u32 qkey; 334 335 union ib_gid local_gid; 336 u16 local_lid; 337 338 unsigned int admin_mtu; 339 unsigned int mcast_mtu; 340 unsigned int max_ib_mtu; 341 342 struct ipoib_rx_buf *rx_ring; 343 344 struct ipoib_tx_buf *tx_ring; 345 unsigned tx_head; 346 unsigned tx_tail; 347 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; 348 struct ib_send_wr tx_wr; 349 unsigned tx_outstanding; 350 struct ib_wc send_wc[MAX_SEND_CQE]; 351 352 struct ib_recv_wr rx_wr; 353 struct ib_sge rx_sge[IPOIB_UD_RX_SG]; 354 355 struct ib_wc ibwc[IPOIB_NUM_WC]; 356 357 struct list_head dead_ahs; 358 359 struct ib_event_handler event_handler; 360 361 struct net_device *parent; 362 struct list_head child_intfs; 363 struct list_head list; 364 int child_type; 365 366 #ifdef CONFIG_INFINIBAND_IPOIB_CM 367 struct ipoib_cm_dev_priv cm; 368 #endif 369 370 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 371 struct list_head fs_list; 372 struct dentry *mcg_dentry; 373 struct dentry *path_dentry; 374 #endif 375 int hca_caps; 376 struct ipoib_ethtool_st ethtool; 377 struct timer_list poll_timer; 378 }; 379 380 struct ipoib_ah { 381 struct net_device *dev; 382 struct ib_ah *ah; 383 struct list_head list; 384 struct kref ref; 385 unsigned last_send; 386 }; 387 388 struct ipoib_path { 389 struct net_device *dev; 390 struct ib_sa_path_rec pathrec; 391 struct ipoib_ah *ah; 392 struct sk_buff_head queue; 393 394 struct list_head neigh_list; 395 396 int query_id; 397 struct ib_sa_query *query; 398 struct completion done; 399 400 struct rb_node rb_node; 401 struct list_head list; 402 int valid; 403 }; 404 405 struct ipoib_neigh { 406 struct ipoib_ah *ah; 407 #ifdef CONFIG_INFINIBAND_IPOIB_CM 408 struct ipoib_cm_tx *cm; 409 #endif 410 u8 daddr[INFINIBAND_ALEN]; 411 struct sk_buff_head queue; 412 413 struct net_device *dev; 414 415 struct list_head list; 416 struct ipoib_neigh __rcu *hnext; 417 struct rcu_head rcu; 418 atomic_t refcnt; 419 unsigned long alive; 420 }; 421 422 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN) 423 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES) 424 425 static inline int ipoib_ud_need_sg(unsigned int ib_mtu) 426 { 427 return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE; 428 } 429 430 void ipoib_neigh_dtor(struct ipoib_neigh *neigh); 431 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh) 432 { 433 if (atomic_dec_and_test(&neigh->refcnt)) 434 ipoib_neigh_dtor(neigh); 435 } 436 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr); 437 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr, 438 struct net_device *dev); 439 void ipoib_neigh_free(struct ipoib_neigh *neigh); 440 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid); 441 442 extern struct workqueue_struct *ipoib_workqueue; 443 444 /* functions */ 445 446 int ipoib_poll(struct napi_struct *napi, int budget); 447 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr); 448 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr); 449 450 struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 451 struct ib_pd *pd, struct ib_ah_attr *attr); 452 void ipoib_free_ah(struct kref *kref); 453 static inline void ipoib_put_ah(struct ipoib_ah *ah) 454 { 455 kref_put(&ah->ref, ipoib_free_ah); 456 } 457 int ipoib_open(struct net_device *dev); 458 int ipoib_add_pkey_attr(struct net_device *dev); 459 int ipoib_add_umcast_attr(struct net_device *dev); 460 461 void ipoib_send(struct net_device *dev, struct sk_buff *skb, 462 struct ipoib_ah *address, u32 qpn); 463 void ipoib_reap_ah(struct work_struct *work); 464 465 void ipoib_mark_paths_invalid(struct net_device *dev); 466 void ipoib_flush_paths(struct net_device *dev); 467 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format); 468 469 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 470 void ipoib_ib_dev_flush_light(struct work_struct *work); 471 void ipoib_ib_dev_flush_normal(struct work_struct *work); 472 void ipoib_ib_dev_flush_heavy(struct work_struct *work); 473 void ipoib_pkey_event(struct work_struct *work); 474 void ipoib_ib_dev_cleanup(struct net_device *dev); 475 476 int ipoib_ib_dev_open(struct net_device *dev); 477 int ipoib_ib_dev_up(struct net_device *dev); 478 int ipoib_ib_dev_down(struct net_device *dev, int flush); 479 int ipoib_ib_dev_stop(struct net_device *dev, int flush); 480 481 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 482 void ipoib_dev_cleanup(struct net_device *dev); 483 484 void ipoib_mcast_join_task(struct work_struct *work); 485 void ipoib_mcast_carrier_on_task(struct work_struct *work); 486 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb); 487 488 void ipoib_mcast_restart_task(struct work_struct *work); 489 int ipoib_mcast_start_thread(struct net_device *dev); 490 int ipoib_mcast_stop_thread(struct net_device *dev, int flush); 491 492 void ipoib_mcast_dev_down(struct net_device *dev); 493 void ipoib_mcast_dev_flush(struct net_device *dev); 494 495 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 496 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 497 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 498 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 499 union ib_gid *gid, 500 unsigned long *created, 501 unsigned int *queuelen, 502 unsigned int *complete, 503 unsigned int *send_only); 504 505 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 506 int ipoib_path_iter_next(struct ipoib_path_iter *iter); 507 void ipoib_path_iter_read(struct ipoib_path_iter *iter, 508 struct ipoib_path *path); 509 #endif 510 511 int ipoib_mcast_attach(struct net_device *dev, u16 mlid, 512 union ib_gid *mgid, int set_qkey); 513 514 int ipoib_init_qp(struct net_device *dev); 515 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 516 void ipoib_transport_dev_cleanup(struct net_device *dev); 517 518 void ipoib_event(struct ib_event_handler *handler, 519 struct ib_event *record); 520 521 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 522 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 523 524 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, 525 u16 pkey, int child_type); 526 527 int __init ipoib_netlink_init(void); 528 void __exit ipoib_netlink_fini(void); 529 530 void ipoib_set_umcast(struct net_device *ndev, int umcast_val); 531 int ipoib_set_mode(struct net_device *dev, const char *buf); 532 533 void ipoib_setup(struct net_device *dev); 534 535 void ipoib_pkey_poll(struct work_struct *work); 536 int ipoib_pkey_dev_delay_open(struct net_device *dev); 537 void ipoib_drain_cq(struct net_device *dev); 538 539 void ipoib_set_ethtool_ops(struct net_device *dev); 540 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca); 541 542 #define IPOIB_FLAGS_RC 0x80 543 #define IPOIB_FLAGS_UC 0x40 544 545 /* We don't support UC connections at the moment */ 546 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC)) 547 548 #ifdef CONFIG_INFINIBAND_IPOIB_CM 549 550 extern int ipoib_max_conn_qp; 551 552 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 553 { 554 struct ipoib_dev_priv *priv = netdev_priv(dev); 555 return IPOIB_CM_SUPPORTED(dev->dev_addr) && 556 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 557 } 558 559 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 560 { 561 struct ipoib_dev_priv *priv = netdev_priv(dev); 562 return IPOIB_CM_SUPPORTED(hwaddr) && 563 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 564 } 565 566 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 567 568 { 569 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags); 570 } 571 572 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 573 { 574 return neigh->cm; 575 } 576 577 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 578 { 579 neigh->cm = tx; 580 } 581 582 static inline int ipoib_cm_has_srq(struct net_device *dev) 583 { 584 struct ipoib_dev_priv *priv = netdev_priv(dev); 585 return !!priv->cm.srq; 586 } 587 588 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 589 { 590 struct ipoib_dev_priv *priv = netdev_priv(dev); 591 return priv->cm.max_cm_mtu; 592 } 593 594 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx); 595 int ipoib_cm_dev_open(struct net_device *dev); 596 void ipoib_cm_dev_stop(struct net_device *dev); 597 int ipoib_cm_dev_init(struct net_device *dev); 598 int ipoib_cm_add_mode_attr(struct net_device *dev); 599 void ipoib_cm_dev_cleanup(struct net_device *dev); 600 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 601 struct ipoib_neigh *neigh); 602 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx); 603 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 604 unsigned int mtu); 605 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc); 606 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc); 607 #else 608 609 struct ipoib_cm_tx; 610 611 #define ipoib_max_conn_qp 0 612 613 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 614 { 615 return 0; 616 } 617 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 618 619 { 620 return 0; 621 } 622 623 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 624 625 { 626 return 0; 627 } 628 629 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 630 { 631 return NULL; 632 } 633 634 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 635 { 636 } 637 638 static inline int ipoib_cm_has_srq(struct net_device *dev) 639 { 640 return 0; 641 } 642 643 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 644 { 645 return 0; 646 } 647 648 static inline 649 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx) 650 { 651 return; 652 } 653 654 static inline 655 int ipoib_cm_dev_open(struct net_device *dev) 656 { 657 return 0; 658 } 659 660 static inline 661 void ipoib_cm_dev_stop(struct net_device *dev) 662 { 663 return; 664 } 665 666 static inline 667 int ipoib_cm_dev_init(struct net_device *dev) 668 { 669 return -ENOSYS; 670 } 671 672 static inline 673 void ipoib_cm_dev_cleanup(struct net_device *dev) 674 { 675 return; 676 } 677 678 static inline 679 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 680 struct ipoib_neigh *neigh) 681 { 682 return NULL; 683 } 684 685 static inline 686 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx) 687 { 688 return; 689 } 690 691 static inline 692 int ipoib_cm_add_mode_attr(struct net_device *dev) 693 { 694 return 0; 695 } 696 697 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 698 unsigned int mtu) 699 { 700 dev_kfree_skb_any(skb); 701 } 702 703 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) 704 { 705 } 706 707 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) 708 { 709 } 710 #endif 711 712 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 713 void ipoib_create_debug_files(struct net_device *dev); 714 void ipoib_delete_debug_files(struct net_device *dev); 715 int ipoib_register_debugfs(void); 716 void ipoib_unregister_debugfs(void); 717 #else 718 static inline void ipoib_create_debug_files(struct net_device *dev) { } 719 static inline void ipoib_delete_debug_files(struct net_device *dev) { } 720 static inline int ipoib_register_debugfs(void) { return 0; } 721 static inline void ipoib_unregister_debugfs(void) { } 722 #endif 723 724 #define ipoib_printk(level, priv, format, arg...) \ 725 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 726 #define ipoib_warn(priv, format, arg...) \ 727 ipoib_printk(KERN_WARNING, priv, format , ## arg) 728 729 extern int ipoib_sendq_size; 730 extern int ipoib_recvq_size; 731 732 extern struct ib_sa_client ipoib_sa_client; 733 734 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 735 extern int ipoib_debug_level; 736 737 #define ipoib_dbg(priv, format, arg...) \ 738 do { \ 739 if (ipoib_debug_level > 0) \ 740 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 741 } while (0) 742 #define ipoib_dbg_mcast(priv, format, arg...) \ 743 do { \ 744 if (mcast_debug_level > 0) \ 745 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 746 } while (0) 747 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 748 #define ipoib_dbg(priv, format, arg...) \ 749 do { (void) (priv); } while (0) 750 #define ipoib_dbg_mcast(priv, format, arg...) \ 751 do { (void) (priv); } while (0) 752 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 753 754 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 755 #define ipoib_dbg_data(priv, format, arg...) \ 756 do { \ 757 if (data_debug_level > 0) \ 758 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 759 } while (0) 760 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 761 #define ipoib_dbg_data(priv, format, arg...) \ 762 do { (void) (priv); } while (0) 763 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 764 765 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff) 766 767 extern const char ipoib_driver_version[]; 768 769 #endif /* _IPOIB_H */ 770