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 = 64, 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_FLAG_SUBINTERFACE = 5, 90 IPOIB_STOP_REAPER = 7, 91 IPOIB_FLAG_ADMIN_CM = 9, 92 IPOIB_FLAG_UMCAST = 10, 93 IPOIB_STOP_NEIGH_GC = 11, 94 IPOIB_NEIGH_TBL_FLUSH = 12, 95 96 IPOIB_MAX_BACKOFF_SECONDS = 16, 97 98 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */ 99 IPOIB_MCAST_FLAG_SENDONLY = 1, 100 /* 101 * For IPOIB_MCAST_FLAG_BUSY 102 * When set, in flight join and mcast->mc is unreliable 103 * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or 104 * haven't started yet 105 * When clear and mcast->mc is valid pointer, join was successful 106 */ 107 IPOIB_MCAST_FLAG_BUSY = 2, 108 IPOIB_MCAST_FLAG_ATTACHED = 3, 109 110 MAX_SEND_CQE = 16, 111 IPOIB_CM_COPYBREAK = 256, 112 113 IPOIB_NON_CHILD = 0, 114 IPOIB_LEGACY_CHILD = 1, 115 IPOIB_RTNL_CHILD = 2, 116 }; 117 118 #define IPOIB_OP_RECV (1ul << 31) 119 #ifdef CONFIG_INFINIBAND_IPOIB_CM 120 #define IPOIB_OP_CM (1ul << 30) 121 #else 122 #define IPOIB_OP_CM (0) 123 #endif 124 125 #define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF)) 126 127 /* structs */ 128 129 struct ipoib_header { 130 __be16 proto; 131 u16 reserved; 132 }; 133 134 struct ipoib_cb { 135 struct qdisc_skb_cb qdisc_cb; 136 u8 hwaddr[INFINIBAND_ALEN]; 137 }; 138 139 static inline struct ipoib_cb *ipoib_skb_cb(const struct sk_buff *skb) 140 { 141 BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct ipoib_cb)); 142 return (struct ipoib_cb *)skb->cb; 143 } 144 145 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */ 146 struct ipoib_mcast { 147 struct ib_sa_mcmember_rec mcmember; 148 struct ib_sa_multicast *mc; 149 struct ipoib_ah *ah; 150 151 struct rb_node rb_node; 152 struct list_head list; 153 154 unsigned long created; 155 unsigned long backoff; 156 unsigned long delay_until; 157 158 unsigned long flags; 159 unsigned char logcount; 160 161 struct list_head neigh_list; 162 163 struct sk_buff_head pkt_queue; 164 165 struct net_device *dev; 166 struct completion done; 167 }; 168 169 struct ipoib_rx_buf { 170 struct sk_buff *skb; 171 u64 mapping[IPOIB_UD_RX_SG]; 172 }; 173 174 struct ipoib_tx_buf { 175 struct sk_buff *skb; 176 u64 mapping[MAX_SKB_FRAGS + 1]; 177 }; 178 179 struct ipoib_cm_tx_buf { 180 struct sk_buff *skb; 181 u64 mapping; 182 }; 183 184 struct ib_cm_id; 185 186 struct ipoib_cm_data { 187 __be32 qpn; /* High byte MUST be ignored on receive */ 188 __be32 mtu; 189 }; 190 191 /* 192 * Quoting 10.3.1 Queue Pair and EE Context States: 193 * 194 * Note, for QPs that are associated with an SRQ, the Consumer should take the 195 * QP through the Error State before invoking a Destroy QP or a Modify QP to the 196 * Reset State. The Consumer may invoke the Destroy QP without first performing 197 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous 198 * Last WQE Reached Event. However, if the Consumer does not wait for the 199 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment 200 * leakage may occur. Therefore, it is good programming practice to tear down a 201 * QP that is associated with an SRQ by using the following process: 202 * 203 * - Put the QP in the Error State 204 * - Wait for the Affiliated Asynchronous Last WQE Reached Event; 205 * - either: 206 * drain the CQ by invoking the Poll CQ verb and either wait for CQ 207 * to be empty or the number of Poll CQ operations has exceeded 208 * CQ capacity size; 209 * - or 210 * post another WR that completes on the same CQ and wait for this 211 * WR to return as a WC; 212 * - and then invoke a Destroy QP or Reset QP. 213 * 214 * We use the second option and wait for a completion on the 215 * same CQ before destroying QPs attached to our SRQ. 216 */ 217 218 enum ipoib_cm_state { 219 IPOIB_CM_RX_LIVE, 220 IPOIB_CM_RX_ERROR, /* Ignored by stale task */ 221 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */ 222 }; 223 224 struct ipoib_cm_rx { 225 struct ib_cm_id *id; 226 struct ib_qp *qp; 227 struct ipoib_cm_rx_buf *rx_ring; 228 struct list_head list; 229 struct net_device *dev; 230 unsigned long jiffies; 231 enum ipoib_cm_state state; 232 int recv_count; 233 }; 234 235 struct ipoib_cm_tx { 236 struct ib_cm_id *id; 237 struct ib_qp *qp; 238 struct list_head list; 239 struct net_device *dev; 240 struct ipoib_neigh *neigh; 241 struct ipoib_path *path; 242 struct ipoib_tx_buf *tx_ring; 243 unsigned tx_head; 244 unsigned tx_tail; 245 unsigned long flags; 246 u32 mtu; 247 unsigned max_send_sge; 248 }; 249 250 struct ipoib_cm_rx_buf { 251 struct sk_buff *skb; 252 u64 mapping[IPOIB_CM_RX_SG]; 253 }; 254 255 struct ipoib_cm_dev_priv { 256 struct ib_srq *srq; 257 struct ipoib_cm_rx_buf *srq_ring; 258 struct ib_cm_id *id; 259 struct list_head passive_ids; /* state: LIVE */ 260 struct list_head rx_error_list; /* state: ERROR */ 261 struct list_head rx_flush_list; /* state: FLUSH, drain not started */ 262 struct list_head rx_drain_list; /* state: FLUSH, drain started */ 263 struct list_head rx_reap_list; /* state: FLUSH, drain done */ 264 struct work_struct start_task; 265 struct work_struct reap_task; 266 struct work_struct skb_task; 267 struct work_struct rx_reap_task; 268 struct delayed_work stale_task; 269 struct sk_buff_head skb_queue; 270 struct list_head start_list; 271 struct list_head reap_list; 272 struct ib_wc ibwc[IPOIB_NUM_WC]; 273 struct ib_sge rx_sge[IPOIB_CM_RX_SG]; 274 struct ib_recv_wr rx_wr; 275 int nonsrq_conn_qp; 276 int max_cm_mtu; 277 int num_frags; 278 }; 279 280 struct ipoib_ethtool_st { 281 u16 coalesce_usecs; 282 u16 max_coalesced_frames; 283 }; 284 285 struct ipoib_neigh_table; 286 287 struct ipoib_neigh_hash { 288 struct ipoib_neigh_table *ntbl; 289 struct ipoib_neigh __rcu **buckets; 290 struct rcu_head rcu; 291 u32 mask; 292 u32 size; 293 }; 294 295 struct ipoib_neigh_table { 296 struct ipoib_neigh_hash __rcu *htbl; 297 atomic_t entries; 298 struct completion flushed; 299 struct completion deleted; 300 }; 301 302 struct ipoib_qp_state_validate { 303 struct work_struct work; 304 struct ipoib_dev_priv *priv; 305 }; 306 307 /* 308 * Device private locking: network stack tx_lock protects members used 309 * in TX fast path, lock protects everything else. lock nests inside 310 * of tx_lock (ie tx_lock must be acquired first if needed). 311 */ 312 struct ipoib_dev_priv { 313 spinlock_t lock; 314 315 struct net_device *dev; 316 317 struct napi_struct napi; 318 319 unsigned long flags; 320 321 struct rw_semaphore vlan_rwsem; 322 323 struct rb_root path_tree; 324 struct list_head path_list; 325 326 struct ipoib_neigh_table ntbl; 327 328 struct ipoib_mcast *broadcast; 329 struct list_head multicast_list; 330 struct rb_root multicast_tree; 331 332 struct workqueue_struct *wq; 333 struct delayed_work mcast_task; 334 struct work_struct carrier_on_task; 335 struct work_struct flush_light; 336 struct work_struct flush_normal; 337 struct work_struct flush_heavy; 338 struct work_struct restart_task; 339 struct delayed_work ah_reap_task; 340 struct delayed_work neigh_reap_task; 341 struct ib_device *ca; 342 u8 port; 343 u16 pkey; 344 u16 pkey_index; 345 struct ib_pd *pd; 346 struct ib_cq *recv_cq; 347 struct ib_cq *send_cq; 348 struct ib_qp *qp; 349 u32 qkey; 350 351 union ib_gid local_gid; 352 u16 local_lid; 353 354 unsigned int admin_mtu; 355 unsigned int mcast_mtu; 356 unsigned int max_ib_mtu; 357 358 struct ipoib_rx_buf *rx_ring; 359 360 struct ipoib_tx_buf *tx_ring; 361 unsigned tx_head; 362 unsigned tx_tail; 363 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; 364 struct ib_ud_wr tx_wr; 365 unsigned tx_outstanding; 366 struct ib_wc send_wc[MAX_SEND_CQE]; 367 368 struct ib_recv_wr rx_wr; 369 struct ib_sge rx_sge[IPOIB_UD_RX_SG]; 370 371 struct ib_wc ibwc[IPOIB_NUM_WC]; 372 373 struct list_head dead_ahs; 374 375 struct ib_event_handler event_handler; 376 377 struct net_device *parent; 378 struct list_head child_intfs; 379 struct list_head list; 380 int child_type; 381 382 #ifdef CONFIG_INFINIBAND_IPOIB_CM 383 struct ipoib_cm_dev_priv cm; 384 #endif 385 386 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 387 struct list_head fs_list; 388 struct dentry *mcg_dentry; 389 struct dentry *path_dentry; 390 #endif 391 u64 hca_caps; 392 struct ipoib_ethtool_st ethtool; 393 struct timer_list poll_timer; 394 unsigned max_send_sge; 395 }; 396 397 struct ipoib_ah { 398 struct net_device *dev; 399 struct ib_ah *ah; 400 struct list_head list; 401 struct kref ref; 402 unsigned last_send; 403 }; 404 405 struct ipoib_path { 406 struct net_device *dev; 407 struct ib_sa_path_rec pathrec; 408 struct ipoib_ah *ah; 409 struct sk_buff_head queue; 410 411 struct list_head neigh_list; 412 413 int query_id; 414 struct ib_sa_query *query; 415 struct completion done; 416 417 struct rb_node rb_node; 418 struct list_head list; 419 int valid; 420 }; 421 422 struct ipoib_neigh { 423 struct ipoib_ah *ah; 424 #ifdef CONFIG_INFINIBAND_IPOIB_CM 425 struct ipoib_cm_tx *cm; 426 #endif 427 u8 daddr[INFINIBAND_ALEN]; 428 struct sk_buff_head queue; 429 430 struct net_device *dev; 431 432 struct list_head list; 433 struct ipoib_neigh __rcu *hnext; 434 struct rcu_head rcu; 435 atomic_t refcnt; 436 unsigned long alive; 437 }; 438 439 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN) 440 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES) 441 442 void ipoib_neigh_dtor(struct ipoib_neigh *neigh); 443 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh) 444 { 445 if (atomic_dec_and_test(&neigh->refcnt)) 446 ipoib_neigh_dtor(neigh); 447 } 448 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr); 449 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr, 450 struct net_device *dev); 451 void ipoib_neigh_free(struct ipoib_neigh *neigh); 452 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid); 453 454 extern struct workqueue_struct *ipoib_workqueue; 455 456 /* functions */ 457 458 int ipoib_poll(struct napi_struct *napi, int budget); 459 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr); 460 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr); 461 462 struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 463 struct ib_pd *pd, struct ib_ah_attr *attr); 464 void ipoib_free_ah(struct kref *kref); 465 static inline void ipoib_put_ah(struct ipoib_ah *ah) 466 { 467 kref_put(&ah->ref, ipoib_free_ah); 468 } 469 int ipoib_open(struct net_device *dev); 470 int ipoib_add_pkey_attr(struct net_device *dev); 471 int ipoib_add_umcast_attr(struct net_device *dev); 472 473 void ipoib_send(struct net_device *dev, struct sk_buff *skb, 474 struct ipoib_ah *address, u32 qpn); 475 void ipoib_reap_ah(struct work_struct *work); 476 477 void ipoib_mark_paths_invalid(struct net_device *dev); 478 void ipoib_flush_paths(struct net_device *dev); 479 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format); 480 481 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 482 void ipoib_ib_dev_flush_light(struct work_struct *work); 483 void ipoib_ib_dev_flush_normal(struct work_struct *work); 484 void ipoib_ib_dev_flush_heavy(struct work_struct *work); 485 void ipoib_pkey_event(struct work_struct *work); 486 void ipoib_ib_dev_cleanup(struct net_device *dev); 487 488 int ipoib_ib_dev_open(struct net_device *dev); 489 int ipoib_ib_dev_up(struct net_device *dev); 490 int ipoib_ib_dev_down(struct net_device *dev); 491 int ipoib_ib_dev_stop(struct net_device *dev); 492 void ipoib_pkey_dev_check_presence(struct net_device *dev); 493 494 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 495 void ipoib_dev_cleanup(struct net_device *dev); 496 497 void ipoib_mcast_join_task(struct work_struct *work); 498 void ipoib_mcast_carrier_on_task(struct work_struct *work); 499 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb); 500 501 void ipoib_mcast_restart_task(struct work_struct *work); 502 int ipoib_mcast_start_thread(struct net_device *dev); 503 int ipoib_mcast_stop_thread(struct net_device *dev); 504 505 void ipoib_mcast_dev_down(struct net_device *dev); 506 void ipoib_mcast_dev_flush(struct net_device *dev); 507 508 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req); 509 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv, 510 struct ipoib_tx_buf *tx_req); 511 512 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv, 513 struct ipoib_tx_buf *tx_req) 514 { 515 int i, off; 516 struct sk_buff *skb = tx_req->skb; 517 skb_frag_t *frags = skb_shinfo(skb)->frags; 518 int nr_frags = skb_shinfo(skb)->nr_frags; 519 u64 *mapping = tx_req->mapping; 520 521 if (skb_headlen(skb)) { 522 priv->tx_sge[0].addr = mapping[0]; 523 priv->tx_sge[0].length = skb_headlen(skb); 524 off = 1; 525 } else 526 off = 0; 527 528 for (i = 0; i < nr_frags; ++i) { 529 priv->tx_sge[i + off].addr = mapping[i + off]; 530 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]); 531 } 532 priv->tx_wr.wr.num_sge = nr_frags + off; 533 } 534 535 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 536 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 537 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 538 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 539 union ib_gid *gid, 540 unsigned long *created, 541 unsigned int *queuelen, 542 unsigned int *complete, 543 unsigned int *send_only); 544 545 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 546 int ipoib_path_iter_next(struct ipoib_path_iter *iter); 547 void ipoib_path_iter_read(struct ipoib_path_iter *iter, 548 struct ipoib_path *path); 549 #endif 550 551 int ipoib_mcast_attach(struct net_device *dev, u16 mlid, 552 union ib_gid *mgid, int set_qkey); 553 void ipoib_mcast_remove_list(struct list_head *remove_list); 554 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid, 555 struct list_head *remove_list); 556 557 int ipoib_init_qp(struct net_device *dev); 558 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 559 void ipoib_transport_dev_cleanup(struct net_device *dev); 560 561 void ipoib_event(struct ib_event_handler *handler, 562 struct ib_event *record); 563 564 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 565 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 566 567 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, 568 u16 pkey, int child_type); 569 570 int __init ipoib_netlink_init(void); 571 void __exit ipoib_netlink_fini(void); 572 573 void ipoib_set_umcast(struct net_device *ndev, int umcast_val); 574 int ipoib_set_mode(struct net_device *dev, const char *buf); 575 576 void ipoib_setup(struct net_device *dev); 577 578 void ipoib_pkey_open(struct ipoib_dev_priv *priv); 579 void ipoib_drain_cq(struct net_device *dev); 580 581 void ipoib_set_ethtool_ops(struct net_device *dev); 582 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca); 583 584 #define IPOIB_FLAGS_RC 0x80 585 #define IPOIB_FLAGS_UC 0x40 586 587 /* We don't support UC connections at the moment */ 588 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC)) 589 590 #ifdef CONFIG_INFINIBAND_IPOIB_CM 591 592 extern int ipoib_max_conn_qp; 593 594 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 595 { 596 struct ipoib_dev_priv *priv = netdev_priv(dev); 597 return IPOIB_CM_SUPPORTED(dev->dev_addr) && 598 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 599 } 600 601 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 602 { 603 struct ipoib_dev_priv *priv = netdev_priv(dev); 604 return IPOIB_CM_SUPPORTED(hwaddr) && 605 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 606 } 607 608 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 609 610 { 611 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags); 612 } 613 614 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 615 { 616 return neigh->cm; 617 } 618 619 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 620 { 621 neigh->cm = tx; 622 } 623 624 static inline int ipoib_cm_has_srq(struct net_device *dev) 625 { 626 struct ipoib_dev_priv *priv = netdev_priv(dev); 627 return !!priv->cm.srq; 628 } 629 630 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 631 { 632 struct ipoib_dev_priv *priv = netdev_priv(dev); 633 return priv->cm.max_cm_mtu; 634 } 635 636 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx); 637 int ipoib_cm_dev_open(struct net_device *dev); 638 void ipoib_cm_dev_stop(struct net_device *dev); 639 int ipoib_cm_dev_init(struct net_device *dev); 640 int ipoib_cm_add_mode_attr(struct net_device *dev); 641 void ipoib_cm_dev_cleanup(struct net_device *dev); 642 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 643 struct ipoib_neigh *neigh); 644 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx); 645 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 646 unsigned int mtu); 647 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc); 648 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc); 649 #else 650 651 struct ipoib_cm_tx; 652 653 #define ipoib_max_conn_qp 0 654 655 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 656 { 657 return 0; 658 } 659 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 660 661 { 662 return 0; 663 } 664 665 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 666 667 { 668 return 0; 669 } 670 671 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 672 { 673 return NULL; 674 } 675 676 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 677 { 678 } 679 680 static inline int ipoib_cm_has_srq(struct net_device *dev) 681 { 682 return 0; 683 } 684 685 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 686 { 687 return 0; 688 } 689 690 static inline 691 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx) 692 { 693 return; 694 } 695 696 static inline 697 int ipoib_cm_dev_open(struct net_device *dev) 698 { 699 return 0; 700 } 701 702 static inline 703 void ipoib_cm_dev_stop(struct net_device *dev) 704 { 705 return; 706 } 707 708 static inline 709 int ipoib_cm_dev_init(struct net_device *dev) 710 { 711 return -ENOSYS; 712 } 713 714 static inline 715 void ipoib_cm_dev_cleanup(struct net_device *dev) 716 { 717 return; 718 } 719 720 static inline 721 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 722 struct ipoib_neigh *neigh) 723 { 724 return NULL; 725 } 726 727 static inline 728 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx) 729 { 730 return; 731 } 732 733 static inline 734 int ipoib_cm_add_mode_attr(struct net_device *dev) 735 { 736 return 0; 737 } 738 739 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 740 unsigned int mtu) 741 { 742 dev_kfree_skb_any(skb); 743 } 744 745 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) 746 { 747 } 748 749 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) 750 { 751 } 752 #endif 753 754 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 755 void ipoib_create_debug_files(struct net_device *dev); 756 void ipoib_delete_debug_files(struct net_device *dev); 757 int ipoib_register_debugfs(void); 758 void ipoib_unregister_debugfs(void); 759 #else 760 static inline void ipoib_create_debug_files(struct net_device *dev) { } 761 static inline void ipoib_delete_debug_files(struct net_device *dev) { } 762 static inline int ipoib_register_debugfs(void) { return 0; } 763 static inline void ipoib_unregister_debugfs(void) { } 764 #endif 765 766 #define ipoib_printk(level, priv, format, arg...) \ 767 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 768 #define ipoib_warn(priv, format, arg...) \ 769 ipoib_printk(KERN_WARNING, priv, format , ## arg) 770 771 extern int ipoib_sendq_size; 772 extern int ipoib_recvq_size; 773 774 extern struct ib_sa_client ipoib_sa_client; 775 776 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 777 extern int ipoib_debug_level; 778 779 #define ipoib_dbg(priv, format, arg...) \ 780 do { \ 781 if (ipoib_debug_level > 0) \ 782 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 783 } while (0) 784 #define ipoib_dbg_mcast(priv, format, arg...) \ 785 do { \ 786 if (mcast_debug_level > 0) \ 787 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 788 } while (0) 789 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 790 #define ipoib_dbg(priv, format, arg...) \ 791 do { (void) (priv); } while (0) 792 #define ipoib_dbg_mcast(priv, format, arg...) \ 793 do { (void) (priv); } while (0) 794 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 795 796 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 797 #define ipoib_dbg_data(priv, format, arg...) \ 798 do { \ 799 if (data_debug_level > 0) \ 800 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 801 } while (0) 802 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 803 #define ipoib_dbg_data(priv, format, arg...) \ 804 do { (void) (priv); } while (0) 805 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 806 807 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff) 808 809 extern const char ipoib_driver_version[]; 810 811 #endif /* _IPOIB_H */ 812