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 IPOIB_FLAG_DEV_ADDR_SET = 13, 96 IPOIB_FLAG_DEV_ADDR_CTRL = 14, 97 IPOIB_FLAG_GOING_DOWN = 15, 98 99 IPOIB_MAX_BACKOFF_SECONDS = 16, 100 101 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */ 102 IPOIB_MCAST_FLAG_SENDONLY = 1, 103 /* 104 * For IPOIB_MCAST_FLAG_BUSY 105 * When set, in flight join and mcast->mc is unreliable 106 * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or 107 * haven't started yet 108 * When clear and mcast->mc is valid pointer, join was successful 109 */ 110 IPOIB_MCAST_FLAG_BUSY = 2, 111 IPOIB_MCAST_FLAG_ATTACHED = 3, 112 113 MAX_SEND_CQE = 16, 114 IPOIB_CM_COPYBREAK = 256, 115 116 IPOIB_NON_CHILD = 0, 117 IPOIB_LEGACY_CHILD = 1, 118 IPOIB_RTNL_CHILD = 2, 119 }; 120 121 #define IPOIB_OP_RECV (1ul << 31) 122 #ifdef CONFIG_INFINIBAND_IPOIB_CM 123 #define IPOIB_OP_CM (1ul << 30) 124 #else 125 #define IPOIB_OP_CM (0) 126 #endif 127 128 #define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF)) 129 130 /* structs */ 131 132 struct ipoib_header { 133 __be16 proto; 134 u16 reserved; 135 }; 136 137 struct ipoib_cb { 138 struct qdisc_skb_cb qdisc_cb; 139 u8 hwaddr[INFINIBAND_ALEN]; 140 }; 141 142 static inline struct ipoib_cb *ipoib_skb_cb(const struct sk_buff *skb) 143 { 144 BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct ipoib_cb)); 145 return (struct ipoib_cb *)skb->cb; 146 } 147 148 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */ 149 struct ipoib_mcast { 150 struct ib_sa_mcmember_rec mcmember; 151 struct ib_sa_multicast *mc; 152 struct ipoib_ah *ah; 153 154 struct rb_node rb_node; 155 struct list_head list; 156 157 unsigned long created; 158 unsigned long backoff; 159 unsigned long delay_until; 160 161 unsigned long flags; 162 unsigned char logcount; 163 164 struct list_head neigh_list; 165 166 struct sk_buff_head pkt_queue; 167 168 struct net_device *dev; 169 struct completion done; 170 }; 171 172 struct ipoib_rx_buf { 173 struct sk_buff *skb; 174 u64 mapping[IPOIB_UD_RX_SG]; 175 }; 176 177 struct ipoib_tx_buf { 178 struct sk_buff *skb; 179 u64 mapping[MAX_SKB_FRAGS + 1]; 180 }; 181 182 struct ipoib_cm_tx_buf { 183 struct sk_buff *skb; 184 u64 mapping; 185 }; 186 187 struct ib_cm_id; 188 189 struct ipoib_cm_data { 190 __be32 qpn; /* High byte MUST be ignored on receive */ 191 __be32 mtu; 192 }; 193 194 /* 195 * Quoting 10.3.1 Queue Pair and EE Context States: 196 * 197 * Note, for QPs that are associated with an SRQ, the Consumer should take the 198 * QP through the Error State before invoking a Destroy QP or a Modify QP to the 199 * Reset State. The Consumer may invoke the Destroy QP without first performing 200 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous 201 * Last WQE Reached Event. However, if the Consumer does not wait for the 202 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment 203 * leakage may occur. Therefore, it is good programming practice to tear down a 204 * QP that is associated with an SRQ by using the following process: 205 * 206 * - Put the QP in the Error State 207 * - Wait for the Affiliated Asynchronous Last WQE Reached Event; 208 * - either: 209 * drain the CQ by invoking the Poll CQ verb and either wait for CQ 210 * to be empty or the number of Poll CQ operations has exceeded 211 * CQ capacity size; 212 * - or 213 * post another WR that completes on the same CQ and wait for this 214 * WR to return as a WC; 215 * - and then invoke a Destroy QP or Reset QP. 216 * 217 * We use the second option and wait for a completion on the 218 * same CQ before destroying QPs attached to our SRQ. 219 */ 220 221 enum ipoib_cm_state { 222 IPOIB_CM_RX_LIVE, 223 IPOIB_CM_RX_ERROR, /* Ignored by stale task */ 224 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */ 225 }; 226 227 struct ipoib_cm_rx { 228 struct ib_cm_id *id; 229 struct ib_qp *qp; 230 struct ipoib_cm_rx_buf *rx_ring; 231 struct list_head list; 232 struct net_device *dev; 233 unsigned long jiffies; 234 enum ipoib_cm_state state; 235 int recv_count; 236 }; 237 238 struct ipoib_cm_tx { 239 struct ib_cm_id *id; 240 struct ib_qp *qp; 241 struct list_head list; 242 struct net_device *dev; 243 struct ipoib_neigh *neigh; 244 struct ipoib_path *path; 245 struct ipoib_tx_buf *tx_ring; 246 unsigned tx_head; 247 unsigned tx_tail; 248 unsigned long flags; 249 u32 mtu; 250 unsigned max_send_sge; 251 }; 252 253 struct ipoib_cm_rx_buf { 254 struct sk_buff *skb; 255 u64 mapping[IPOIB_CM_RX_SG]; 256 }; 257 258 struct ipoib_cm_dev_priv { 259 struct ib_srq *srq; 260 struct ipoib_cm_rx_buf *srq_ring; 261 struct ib_cm_id *id; 262 struct list_head passive_ids; /* state: LIVE */ 263 struct list_head rx_error_list; /* state: ERROR */ 264 struct list_head rx_flush_list; /* state: FLUSH, drain not started */ 265 struct list_head rx_drain_list; /* state: FLUSH, drain started */ 266 struct list_head rx_reap_list; /* state: FLUSH, drain done */ 267 struct work_struct start_task; 268 struct work_struct reap_task; 269 struct work_struct skb_task; 270 struct work_struct rx_reap_task; 271 struct delayed_work stale_task; 272 struct sk_buff_head skb_queue; 273 struct list_head start_list; 274 struct list_head reap_list; 275 struct ib_wc ibwc[IPOIB_NUM_WC]; 276 struct ib_sge rx_sge[IPOIB_CM_RX_SG]; 277 struct ib_recv_wr rx_wr; 278 int nonsrq_conn_qp; 279 int max_cm_mtu; 280 int num_frags; 281 }; 282 283 struct ipoib_ethtool_st { 284 u16 coalesce_usecs; 285 u16 max_coalesced_frames; 286 }; 287 288 struct ipoib_neigh_table; 289 290 struct ipoib_neigh_hash { 291 struct ipoib_neigh_table *ntbl; 292 struct ipoib_neigh __rcu **buckets; 293 struct rcu_head rcu; 294 u32 mask; 295 u32 size; 296 }; 297 298 struct ipoib_neigh_table { 299 struct ipoib_neigh_hash __rcu *htbl; 300 atomic_t entries; 301 struct completion flushed; 302 struct completion deleted; 303 }; 304 305 struct ipoib_qp_state_validate { 306 struct work_struct work; 307 struct ipoib_dev_priv *priv; 308 }; 309 310 /* 311 * Device private locking: network stack tx_lock protects members used 312 * in TX fast path, lock protects everything else. lock nests inside 313 * of tx_lock (ie tx_lock must be acquired first if needed). 314 */ 315 struct ipoib_dev_priv { 316 spinlock_t lock; 317 318 struct net_device *dev; 319 320 struct napi_struct napi; 321 322 unsigned long flags; 323 324 struct rw_semaphore vlan_rwsem; 325 326 struct rb_root path_tree; 327 struct list_head path_list; 328 329 struct ipoib_neigh_table ntbl; 330 331 struct ipoib_mcast *broadcast; 332 struct list_head multicast_list; 333 struct rb_root multicast_tree; 334 335 struct workqueue_struct *wq; 336 struct delayed_work mcast_task; 337 struct work_struct carrier_on_task; 338 struct work_struct flush_light; 339 struct work_struct flush_normal; 340 struct work_struct flush_heavy; 341 struct work_struct restart_task; 342 struct delayed_work ah_reap_task; 343 struct delayed_work neigh_reap_task; 344 struct ib_device *ca; 345 u8 port; 346 u16 pkey; 347 u16 pkey_index; 348 struct ib_pd *pd; 349 struct ib_cq *recv_cq; 350 struct ib_cq *send_cq; 351 struct ib_qp *qp; 352 u32 qkey; 353 354 union ib_gid local_gid; 355 u16 local_lid; 356 357 unsigned int admin_mtu; 358 unsigned int mcast_mtu; 359 unsigned int max_ib_mtu; 360 361 struct ipoib_rx_buf *rx_ring; 362 363 struct ipoib_tx_buf *tx_ring; 364 unsigned tx_head; 365 unsigned tx_tail; 366 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; 367 struct ib_ud_wr tx_wr; 368 unsigned tx_outstanding; 369 struct ib_wc send_wc[MAX_SEND_CQE]; 370 371 struct ib_recv_wr rx_wr; 372 struct ib_sge rx_sge[IPOIB_UD_RX_SG]; 373 374 struct ib_wc ibwc[IPOIB_NUM_WC]; 375 376 struct list_head dead_ahs; 377 378 struct ib_event_handler event_handler; 379 380 struct net_device *parent; 381 struct list_head child_intfs; 382 struct list_head list; 383 int child_type; 384 385 #ifdef CONFIG_INFINIBAND_IPOIB_CM 386 struct ipoib_cm_dev_priv cm; 387 #endif 388 389 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 390 struct list_head fs_list; 391 struct dentry *mcg_dentry; 392 struct dentry *path_dentry; 393 #endif 394 u64 hca_caps; 395 struct ipoib_ethtool_st ethtool; 396 struct timer_list poll_timer; 397 unsigned max_send_sge; 398 bool sm_fullmember_sendonly_support; 399 }; 400 401 struct ipoib_ah { 402 struct net_device *dev; 403 struct ib_ah *ah; 404 struct list_head list; 405 struct kref ref; 406 unsigned last_send; 407 }; 408 409 struct ipoib_path { 410 struct net_device *dev; 411 struct ib_sa_path_rec pathrec; 412 struct ipoib_ah *ah; 413 struct sk_buff_head queue; 414 415 struct list_head neigh_list; 416 417 int query_id; 418 struct ib_sa_query *query; 419 struct completion done; 420 421 struct rb_node rb_node; 422 struct list_head list; 423 int valid; 424 }; 425 426 struct ipoib_neigh { 427 struct ipoib_ah *ah; 428 #ifdef CONFIG_INFINIBAND_IPOIB_CM 429 struct ipoib_cm_tx *cm; 430 #endif 431 u8 daddr[INFINIBAND_ALEN]; 432 struct sk_buff_head queue; 433 434 struct net_device *dev; 435 436 struct list_head list; 437 struct ipoib_neigh __rcu *hnext; 438 struct rcu_head rcu; 439 atomic_t refcnt; 440 unsigned long alive; 441 }; 442 443 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN) 444 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES) 445 446 void ipoib_neigh_dtor(struct ipoib_neigh *neigh); 447 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh) 448 { 449 if (atomic_dec_and_test(&neigh->refcnt)) 450 ipoib_neigh_dtor(neigh); 451 } 452 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr); 453 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr, 454 struct net_device *dev); 455 void ipoib_neigh_free(struct ipoib_neigh *neigh); 456 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid); 457 458 extern struct workqueue_struct *ipoib_workqueue; 459 460 /* functions */ 461 462 int ipoib_poll(struct napi_struct *napi, int budget); 463 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr); 464 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr); 465 466 struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 467 struct ib_pd *pd, struct ib_ah_attr *attr); 468 void ipoib_free_ah(struct kref *kref); 469 static inline void ipoib_put_ah(struct ipoib_ah *ah) 470 { 471 kref_put(&ah->ref, ipoib_free_ah); 472 } 473 int ipoib_open(struct net_device *dev); 474 int ipoib_add_pkey_attr(struct net_device *dev); 475 int ipoib_add_umcast_attr(struct net_device *dev); 476 477 void ipoib_send(struct net_device *dev, struct sk_buff *skb, 478 struct ipoib_ah *address, u32 qpn); 479 void ipoib_reap_ah(struct work_struct *work); 480 481 void ipoib_mark_paths_invalid(struct net_device *dev); 482 void ipoib_flush_paths(struct net_device *dev); 483 int ipoib_check_sm_sendonly_fullmember_support(struct ipoib_dev_priv *priv); 484 struct ipoib_dev_priv *ipoib_intf_alloc(const char *format); 485 486 int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 487 void ipoib_ib_dev_flush_light(struct work_struct *work); 488 void ipoib_ib_dev_flush_normal(struct work_struct *work); 489 void ipoib_ib_dev_flush_heavy(struct work_struct *work); 490 void ipoib_pkey_event(struct work_struct *work); 491 void ipoib_ib_dev_cleanup(struct net_device *dev); 492 493 int ipoib_ib_dev_open(struct net_device *dev); 494 int ipoib_ib_dev_up(struct net_device *dev); 495 int ipoib_ib_dev_down(struct net_device *dev); 496 int ipoib_ib_dev_stop(struct net_device *dev); 497 void ipoib_pkey_dev_check_presence(struct net_device *dev); 498 499 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 500 void ipoib_dev_cleanup(struct net_device *dev); 501 502 void ipoib_mcast_join_task(struct work_struct *work); 503 void ipoib_mcast_carrier_on_task(struct work_struct *work); 504 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb); 505 506 void ipoib_mcast_restart_task(struct work_struct *work); 507 int ipoib_mcast_start_thread(struct net_device *dev); 508 int ipoib_mcast_stop_thread(struct net_device *dev); 509 510 void ipoib_mcast_dev_down(struct net_device *dev); 511 void ipoib_mcast_dev_flush(struct net_device *dev); 512 513 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req); 514 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv, 515 struct ipoib_tx_buf *tx_req); 516 517 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv, 518 struct ipoib_tx_buf *tx_req) 519 { 520 int i, off; 521 struct sk_buff *skb = tx_req->skb; 522 skb_frag_t *frags = skb_shinfo(skb)->frags; 523 int nr_frags = skb_shinfo(skb)->nr_frags; 524 u64 *mapping = tx_req->mapping; 525 526 if (skb_headlen(skb)) { 527 priv->tx_sge[0].addr = mapping[0]; 528 priv->tx_sge[0].length = skb_headlen(skb); 529 off = 1; 530 } else 531 off = 0; 532 533 for (i = 0; i < nr_frags; ++i) { 534 priv->tx_sge[i + off].addr = mapping[i + off]; 535 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]); 536 } 537 priv->tx_wr.wr.num_sge = nr_frags + off; 538 } 539 540 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 541 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 542 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 543 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 544 union ib_gid *gid, 545 unsigned long *created, 546 unsigned int *queuelen, 547 unsigned int *complete, 548 unsigned int *send_only); 549 550 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 551 int ipoib_path_iter_next(struct ipoib_path_iter *iter); 552 void ipoib_path_iter_read(struct ipoib_path_iter *iter, 553 struct ipoib_path *path); 554 #endif 555 556 int ipoib_mcast_attach(struct net_device *dev, u16 mlid, 557 union ib_gid *mgid, int set_qkey); 558 void ipoib_mcast_remove_list(struct list_head *remove_list); 559 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid, 560 struct list_head *remove_list); 561 562 int ipoib_init_qp(struct net_device *dev); 563 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 564 void ipoib_transport_dev_cleanup(struct net_device *dev); 565 566 void ipoib_event(struct ib_event_handler *handler, 567 struct ib_event *record); 568 569 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 570 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 571 572 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, 573 u16 pkey, int child_type); 574 575 int __init ipoib_netlink_init(void); 576 void __exit ipoib_netlink_fini(void); 577 578 void ipoib_set_umcast(struct net_device *ndev, int umcast_val); 579 int ipoib_set_mode(struct net_device *dev, const char *buf); 580 581 void ipoib_setup(struct net_device *dev); 582 583 void ipoib_pkey_open(struct ipoib_dev_priv *priv); 584 void ipoib_drain_cq(struct net_device *dev); 585 586 void ipoib_set_ethtool_ops(struct net_device *dev); 587 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca); 588 589 #define IPOIB_FLAGS_RC 0x80 590 #define IPOIB_FLAGS_UC 0x40 591 592 /* We don't support UC connections at the moment */ 593 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC)) 594 595 #ifdef CONFIG_INFINIBAND_IPOIB_CM 596 597 extern int ipoib_max_conn_qp; 598 599 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 600 { 601 struct ipoib_dev_priv *priv = netdev_priv(dev); 602 return IPOIB_CM_SUPPORTED(dev->dev_addr) && 603 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 604 } 605 606 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 607 { 608 struct ipoib_dev_priv *priv = netdev_priv(dev); 609 return IPOIB_CM_SUPPORTED(hwaddr) && 610 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 611 } 612 613 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 614 615 { 616 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags); 617 } 618 619 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 620 { 621 return neigh->cm; 622 } 623 624 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 625 { 626 neigh->cm = tx; 627 } 628 629 static inline int ipoib_cm_has_srq(struct net_device *dev) 630 { 631 struct ipoib_dev_priv *priv = netdev_priv(dev); 632 return !!priv->cm.srq; 633 } 634 635 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 636 { 637 struct ipoib_dev_priv *priv = netdev_priv(dev); 638 return priv->cm.max_cm_mtu; 639 } 640 641 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx); 642 int ipoib_cm_dev_open(struct net_device *dev); 643 void ipoib_cm_dev_stop(struct net_device *dev); 644 int ipoib_cm_dev_init(struct net_device *dev); 645 int ipoib_cm_add_mode_attr(struct net_device *dev); 646 void ipoib_cm_dev_cleanup(struct net_device *dev); 647 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 648 struct ipoib_neigh *neigh); 649 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx); 650 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 651 unsigned int mtu); 652 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc); 653 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc); 654 #else 655 656 struct ipoib_cm_tx; 657 658 #define ipoib_max_conn_qp 0 659 660 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 661 { 662 return 0; 663 } 664 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 665 666 { 667 return 0; 668 } 669 670 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 671 672 { 673 return 0; 674 } 675 676 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 677 { 678 return NULL; 679 } 680 681 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 682 { 683 } 684 685 static inline int ipoib_cm_has_srq(struct net_device *dev) 686 { 687 return 0; 688 } 689 690 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 691 { 692 return 0; 693 } 694 695 static inline 696 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx) 697 { 698 return; 699 } 700 701 static inline 702 int ipoib_cm_dev_open(struct net_device *dev) 703 { 704 return 0; 705 } 706 707 static inline 708 void ipoib_cm_dev_stop(struct net_device *dev) 709 { 710 return; 711 } 712 713 static inline 714 int ipoib_cm_dev_init(struct net_device *dev) 715 { 716 return -ENOSYS; 717 } 718 719 static inline 720 void ipoib_cm_dev_cleanup(struct net_device *dev) 721 { 722 return; 723 } 724 725 static inline 726 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 727 struct ipoib_neigh *neigh) 728 { 729 return NULL; 730 } 731 732 static inline 733 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx) 734 { 735 return; 736 } 737 738 static inline 739 int ipoib_cm_add_mode_attr(struct net_device *dev) 740 { 741 return 0; 742 } 743 744 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 745 unsigned int mtu) 746 { 747 dev_kfree_skb_any(skb); 748 } 749 750 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) 751 { 752 } 753 754 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) 755 { 756 } 757 #endif 758 759 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 760 void ipoib_create_debug_files(struct net_device *dev); 761 void ipoib_delete_debug_files(struct net_device *dev); 762 int ipoib_register_debugfs(void); 763 void ipoib_unregister_debugfs(void); 764 #else 765 static inline void ipoib_create_debug_files(struct net_device *dev) { } 766 static inline void ipoib_delete_debug_files(struct net_device *dev) { } 767 static inline int ipoib_register_debugfs(void) { return 0; } 768 static inline void ipoib_unregister_debugfs(void) { } 769 #endif 770 771 #define ipoib_printk(level, priv, format, arg...) \ 772 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 773 #define ipoib_warn(priv, format, arg...) \ 774 ipoib_printk(KERN_WARNING, priv, format , ## arg) 775 776 extern int ipoib_sendq_size; 777 extern int ipoib_recvq_size; 778 779 extern struct ib_sa_client ipoib_sa_client; 780 781 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 782 extern int ipoib_debug_level; 783 784 #define ipoib_dbg(priv, format, arg...) \ 785 do { \ 786 if (ipoib_debug_level > 0) \ 787 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 788 } while (0) 789 #define ipoib_dbg_mcast(priv, format, arg...) \ 790 do { \ 791 if (mcast_debug_level > 0) \ 792 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 793 } while (0) 794 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 795 #define ipoib_dbg(priv, format, arg...) \ 796 do { (void) (priv); } while (0) 797 #define ipoib_dbg_mcast(priv, format, arg...) \ 798 do { (void) (priv); } while (0) 799 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 800 801 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 802 #define ipoib_dbg_data(priv, format, arg...) \ 803 do { \ 804 if (data_debug_level > 0) \ 805 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 806 } while (0) 807 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 808 #define ipoib_dbg_data(priv, format, arg...) \ 809 do { (void) (priv); } while (0) 810 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 811 812 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff) 813 814 extern const char ipoib_driver_version[]; 815 816 #endif /* _IPOIB_H */ 817