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 }; 248 249 struct ipoib_cm_rx_buf { 250 struct sk_buff *skb; 251 u64 mapping[IPOIB_CM_RX_SG]; 252 }; 253 254 struct ipoib_cm_dev_priv { 255 struct ib_srq *srq; 256 struct ipoib_cm_rx_buf *srq_ring; 257 struct ib_cm_id *id; 258 struct list_head passive_ids; /* state: LIVE */ 259 struct list_head rx_error_list; /* state: ERROR */ 260 struct list_head rx_flush_list; /* state: FLUSH, drain not started */ 261 struct list_head rx_drain_list; /* state: FLUSH, drain started */ 262 struct list_head rx_reap_list; /* state: FLUSH, drain done */ 263 struct work_struct start_task; 264 struct work_struct reap_task; 265 struct work_struct skb_task; 266 struct work_struct rx_reap_task; 267 struct delayed_work stale_task; 268 struct sk_buff_head skb_queue; 269 struct list_head start_list; 270 struct list_head reap_list; 271 struct ib_wc ibwc[IPOIB_NUM_WC]; 272 struct ib_sge rx_sge[IPOIB_CM_RX_SG]; 273 struct ib_recv_wr rx_wr; 274 int nonsrq_conn_qp; 275 int max_cm_mtu; 276 int num_frags; 277 }; 278 279 struct ipoib_ethtool_st { 280 u16 coalesce_usecs; 281 u16 max_coalesced_frames; 282 }; 283 284 struct ipoib_neigh_table; 285 286 struct ipoib_neigh_hash { 287 struct ipoib_neigh_table *ntbl; 288 struct ipoib_neigh __rcu **buckets; 289 struct rcu_head rcu; 290 u32 mask; 291 u32 size; 292 }; 293 294 struct ipoib_neigh_table { 295 struct ipoib_neigh_hash __rcu *htbl; 296 atomic_t entries; 297 struct completion flushed; 298 struct completion deleted; 299 }; 300 301 struct ipoib_qp_state_validate { 302 struct work_struct work; 303 struct ipoib_dev_priv *priv; 304 }; 305 306 /* 307 * Device private locking: network stack tx_lock protects members used 308 * in TX fast path, lock protects everything else. lock nests inside 309 * of tx_lock (ie tx_lock must be acquired first if needed). 310 */ 311 struct ipoib_dev_priv { 312 spinlock_t lock; 313 314 struct net_device *dev; 315 316 struct napi_struct napi; 317 318 unsigned long flags; 319 320 struct rw_semaphore vlan_rwsem; 321 322 struct rb_root path_tree; 323 struct list_head path_list; 324 325 struct ipoib_neigh_table ntbl; 326 327 struct ipoib_mcast *broadcast; 328 struct list_head multicast_list; 329 struct rb_root multicast_tree; 330 331 struct workqueue_struct *wq; 332 struct delayed_work mcast_task; 333 struct work_struct carrier_on_task; 334 struct work_struct flush_light; 335 struct work_struct flush_normal; 336 struct work_struct flush_heavy; 337 struct work_struct restart_task; 338 struct delayed_work ah_reap_task; 339 struct delayed_work neigh_reap_task; 340 struct ib_device *ca; 341 u8 port; 342 u16 pkey; 343 u16 pkey_index; 344 struct ib_pd *pd; 345 struct ib_cq *recv_cq; 346 struct ib_cq *send_cq; 347 struct ib_qp *qp; 348 u32 qkey; 349 350 union ib_gid local_gid; 351 u16 local_lid; 352 353 unsigned int admin_mtu; 354 unsigned int mcast_mtu; 355 unsigned int max_ib_mtu; 356 357 struct ipoib_rx_buf *rx_ring; 358 359 struct ipoib_tx_buf *tx_ring; 360 unsigned tx_head; 361 unsigned tx_tail; 362 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; 363 struct ib_send_wr tx_wr; 364 unsigned tx_outstanding; 365 struct ib_wc send_wc[MAX_SEND_CQE]; 366 367 struct ib_recv_wr rx_wr; 368 struct ib_sge rx_sge[IPOIB_UD_RX_SG]; 369 370 struct ib_wc ibwc[IPOIB_NUM_WC]; 371 372 struct list_head dead_ahs; 373 374 struct ib_event_handler event_handler; 375 376 struct net_device *parent; 377 struct list_head child_intfs; 378 struct list_head list; 379 int child_type; 380 381 #ifdef CONFIG_INFINIBAND_IPOIB_CM 382 struct ipoib_cm_dev_priv cm; 383 #endif 384 385 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 386 struct list_head fs_list; 387 struct dentry *mcg_dentry; 388 struct dentry *path_dentry; 389 #endif 390 int hca_caps; 391 struct ipoib_ethtool_st ethtool; 392 struct timer_list poll_timer; 393 }; 394 395 struct ipoib_ah { 396 struct net_device *dev; 397 struct ib_ah *ah; 398 struct list_head list; 399 struct kref ref; 400 unsigned last_send; 401 }; 402 403 struct ipoib_path { 404 struct net_device *dev; 405 struct ib_sa_path_rec pathrec; 406 struct ipoib_ah *ah; 407 struct sk_buff_head queue; 408 409 struct list_head neigh_list; 410 411 int query_id; 412 struct ib_sa_query *query; 413 struct completion done; 414 415 struct rb_node rb_node; 416 struct list_head list; 417 int valid; 418 }; 419 420 struct ipoib_neigh { 421 struct ipoib_ah *ah; 422 #ifdef CONFIG_INFINIBAND_IPOIB_CM 423 struct ipoib_cm_tx *cm; 424 #endif 425 u8 daddr[INFINIBAND_ALEN]; 426 struct sk_buff_head queue; 427 428 struct net_device *dev; 429 430 struct list_head list; 431 struct ipoib_neigh __rcu *hnext; 432 struct rcu_head rcu; 433 atomic_t refcnt; 434 unsigned long alive; 435 }; 436 437 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN) 438 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES) 439 440 void ipoib_neigh_dtor(struct ipoib_neigh *neigh); 441 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh) 442 { 443 if (atomic_dec_and_test(&neigh->refcnt)) 444 ipoib_neigh_dtor(neigh); 445 } 446 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr); 447 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr, 448 struct net_device *dev); 449 void ipoib_neigh_free(struct ipoib_neigh *neigh); 450 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid); 451 452 extern struct workqueue_struct *ipoib_workqueue; 453 454 /* functions */ 455 456 int ipoib_poll(struct napi_struct *napi, int budget); 457 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr); 458 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr); 459 460 struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 461 struct ib_pd *pd, struct ib_ah_attr *attr); 462 void ipoib_free_ah(struct kref *kref); 463 static inline void ipoib_put_ah(struct ipoib_ah *ah) 464 { 465 kref_put(&ah->ref, ipoib_free_ah); 466 } 467 int ipoib_open(struct net_device *dev); 468 int ipoib_add_pkey_attr(struct net_device *dev); 469 int ipoib_add_umcast_attr(struct net_device *dev); 470 471 void ipoib_send(struct net_device *dev, struct sk_buff *skb, 472 struct ipoib_ah *address, u32 qpn); 473 void ipoib_reap_ah(struct work_struct *work); 474 475 void ipoib_mark_paths_invalid(struct net_device *dev); 476 void ipoib_flush_paths(struct net_device *dev); 477 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format); 478 479 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 480 void ipoib_ib_dev_flush_light(struct work_struct *work); 481 void ipoib_ib_dev_flush_normal(struct work_struct *work); 482 void ipoib_ib_dev_flush_heavy(struct work_struct *work); 483 void ipoib_pkey_event(struct work_struct *work); 484 void ipoib_ib_dev_cleanup(struct net_device *dev); 485 486 int ipoib_ib_dev_open(struct net_device *dev); 487 int ipoib_ib_dev_up(struct net_device *dev); 488 int ipoib_ib_dev_down(struct net_device *dev); 489 int ipoib_ib_dev_stop(struct net_device *dev); 490 void ipoib_pkey_dev_check_presence(struct net_device *dev); 491 492 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 493 void ipoib_dev_cleanup(struct net_device *dev); 494 495 void ipoib_mcast_join_task(struct work_struct *work); 496 void ipoib_mcast_carrier_on_task(struct work_struct *work); 497 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb); 498 void ipoib_mcast_free(struct ipoib_mcast *mc); 499 500 void ipoib_mcast_restart_task(struct work_struct *work); 501 int ipoib_mcast_start_thread(struct net_device *dev); 502 int ipoib_mcast_stop_thread(struct net_device *dev); 503 504 void ipoib_mcast_dev_down(struct net_device *dev); 505 void ipoib_mcast_dev_flush(struct net_device *dev); 506 507 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req); 508 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv, 509 struct ipoib_tx_buf *tx_req); 510 511 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv, 512 struct ipoib_tx_buf *tx_req) 513 { 514 int i, off; 515 struct sk_buff *skb = tx_req->skb; 516 skb_frag_t *frags = skb_shinfo(skb)->frags; 517 int nr_frags = skb_shinfo(skb)->nr_frags; 518 u64 *mapping = tx_req->mapping; 519 520 if (skb_headlen(skb)) { 521 priv->tx_sge[0].addr = mapping[0]; 522 priv->tx_sge[0].length = skb_headlen(skb); 523 off = 1; 524 } else 525 off = 0; 526 527 for (i = 0; i < nr_frags; ++i) { 528 priv->tx_sge[i + off].addr = mapping[i + off]; 529 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]); 530 } 531 priv->tx_wr.num_sge = nr_frags + off; 532 } 533 534 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 535 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 536 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 537 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 538 union ib_gid *gid, 539 unsigned long *created, 540 unsigned int *queuelen, 541 unsigned int *complete, 542 unsigned int *send_only); 543 544 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 545 int ipoib_path_iter_next(struct ipoib_path_iter *iter); 546 void ipoib_path_iter_read(struct ipoib_path_iter *iter, 547 struct ipoib_path *path); 548 #endif 549 550 int ipoib_mcast_attach(struct net_device *dev, u16 mlid, 551 union ib_gid *mgid, int set_qkey); 552 int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast); 553 struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid); 554 555 int ipoib_init_qp(struct net_device *dev); 556 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 557 void ipoib_transport_dev_cleanup(struct net_device *dev); 558 559 void ipoib_event(struct ib_event_handler *handler, 560 struct ib_event *record); 561 562 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 563 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 564 565 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, 566 u16 pkey, int child_type); 567 568 int __init ipoib_netlink_init(void); 569 void __exit ipoib_netlink_fini(void); 570 571 void ipoib_set_umcast(struct net_device *ndev, int umcast_val); 572 int ipoib_set_mode(struct net_device *dev, const char *buf); 573 574 void ipoib_setup(struct net_device *dev); 575 576 void ipoib_pkey_open(struct ipoib_dev_priv *priv); 577 void ipoib_drain_cq(struct net_device *dev); 578 579 void ipoib_set_ethtool_ops(struct net_device *dev); 580 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca); 581 582 #define IPOIB_FLAGS_RC 0x80 583 #define IPOIB_FLAGS_UC 0x40 584 585 /* We don't support UC connections at the moment */ 586 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC)) 587 588 #ifdef CONFIG_INFINIBAND_IPOIB_CM 589 590 extern int ipoib_max_conn_qp; 591 592 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 593 { 594 struct ipoib_dev_priv *priv = netdev_priv(dev); 595 return IPOIB_CM_SUPPORTED(dev->dev_addr) && 596 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 597 } 598 599 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 600 { 601 struct ipoib_dev_priv *priv = netdev_priv(dev); 602 return IPOIB_CM_SUPPORTED(hwaddr) && 603 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 604 } 605 606 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 607 608 { 609 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags); 610 } 611 612 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 613 { 614 return neigh->cm; 615 } 616 617 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 618 { 619 neigh->cm = tx; 620 } 621 622 static inline int ipoib_cm_has_srq(struct net_device *dev) 623 { 624 struct ipoib_dev_priv *priv = netdev_priv(dev); 625 return !!priv->cm.srq; 626 } 627 628 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 629 { 630 struct ipoib_dev_priv *priv = netdev_priv(dev); 631 return priv->cm.max_cm_mtu; 632 } 633 634 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx); 635 int ipoib_cm_dev_open(struct net_device *dev); 636 void ipoib_cm_dev_stop(struct net_device *dev); 637 int ipoib_cm_dev_init(struct net_device *dev); 638 int ipoib_cm_add_mode_attr(struct net_device *dev); 639 void ipoib_cm_dev_cleanup(struct net_device *dev); 640 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 641 struct ipoib_neigh *neigh); 642 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx); 643 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 644 unsigned int mtu); 645 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc); 646 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc); 647 #else 648 649 struct ipoib_cm_tx; 650 651 #define ipoib_max_conn_qp 0 652 653 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 654 { 655 return 0; 656 } 657 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 658 659 { 660 return 0; 661 } 662 663 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 664 665 { 666 return 0; 667 } 668 669 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 670 { 671 return NULL; 672 } 673 674 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 675 { 676 } 677 678 static inline int ipoib_cm_has_srq(struct net_device *dev) 679 { 680 return 0; 681 } 682 683 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 684 { 685 return 0; 686 } 687 688 static inline 689 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx) 690 { 691 return; 692 } 693 694 static inline 695 int ipoib_cm_dev_open(struct net_device *dev) 696 { 697 return 0; 698 } 699 700 static inline 701 void ipoib_cm_dev_stop(struct net_device *dev) 702 { 703 return; 704 } 705 706 static inline 707 int ipoib_cm_dev_init(struct net_device *dev) 708 { 709 return -ENOSYS; 710 } 711 712 static inline 713 void ipoib_cm_dev_cleanup(struct net_device *dev) 714 { 715 return; 716 } 717 718 static inline 719 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 720 struct ipoib_neigh *neigh) 721 { 722 return NULL; 723 } 724 725 static inline 726 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx) 727 { 728 return; 729 } 730 731 static inline 732 int ipoib_cm_add_mode_attr(struct net_device *dev) 733 { 734 return 0; 735 } 736 737 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 738 unsigned int mtu) 739 { 740 dev_kfree_skb_any(skb); 741 } 742 743 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) 744 { 745 } 746 747 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) 748 { 749 } 750 #endif 751 752 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 753 void ipoib_create_debug_files(struct net_device *dev); 754 void ipoib_delete_debug_files(struct net_device *dev); 755 int ipoib_register_debugfs(void); 756 void ipoib_unregister_debugfs(void); 757 #else 758 static inline void ipoib_create_debug_files(struct net_device *dev) { } 759 static inline void ipoib_delete_debug_files(struct net_device *dev) { } 760 static inline int ipoib_register_debugfs(void) { return 0; } 761 static inline void ipoib_unregister_debugfs(void) { } 762 #endif 763 764 #define ipoib_printk(level, priv, format, arg...) \ 765 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 766 #define ipoib_warn(priv, format, arg...) \ 767 ipoib_printk(KERN_WARNING, priv, format , ## arg) 768 769 extern int ipoib_sendq_size; 770 extern int ipoib_recvq_size; 771 772 extern struct ib_sa_client ipoib_sa_client; 773 774 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 775 extern int ipoib_debug_level; 776 777 #define ipoib_dbg(priv, format, arg...) \ 778 do { \ 779 if (ipoib_debug_level > 0) \ 780 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 781 } while (0) 782 #define ipoib_dbg_mcast(priv, format, arg...) \ 783 do { \ 784 if (mcast_debug_level > 0) \ 785 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 786 } while (0) 787 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 788 #define ipoib_dbg(priv, format, arg...) \ 789 do { (void) (priv); } while (0) 790 #define ipoib_dbg_mcast(priv, format, arg...) \ 791 do { (void) (priv); } while (0) 792 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 793 794 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 795 #define ipoib_dbg_data(priv, format, arg...) \ 796 do { \ 797 if (data_debug_level > 0) \ 798 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 799 } while (0) 800 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 801 #define ipoib_dbg_data(priv, format, arg...) \ 802 do { (void) (priv); } while (0) 803 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 804 805 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff) 806 807 extern const char ipoib_driver_version[]; 808 809 #endif /* _IPOIB_H */ 810