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