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 /* constants */ 56 57 enum ipoib_flush_level { 58 IPOIB_FLUSH_LIGHT, 59 IPOIB_FLUSH_NORMAL, 60 IPOIB_FLUSH_HEAVY 61 }; 62 63 enum { 64 IPOIB_ENCAP_LEN = 4, 65 IPOIB_PSEUDO_LEN = 20, 66 IPOIB_HARD_LEN = IPOIB_ENCAP_LEN + IPOIB_PSEUDO_LEN, 67 68 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN, 69 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */ 70 71 IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */ 72 IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN, 73 IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE, 74 IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE, 75 IPOIB_RX_RING_SIZE = 256, 76 IPOIB_TX_RING_SIZE = 128, 77 IPOIB_MAX_QUEUE_SIZE = 8192, 78 IPOIB_MIN_QUEUE_SIZE = 2, 79 IPOIB_CM_MAX_CONN_QP = 4096, 80 81 IPOIB_NUM_WC = 4, 82 83 IPOIB_MAX_PATH_REC_QUEUE = 3, 84 IPOIB_MAX_MCAST_QUEUE = 64, 85 86 IPOIB_FLAG_OPER_UP = 0, 87 IPOIB_FLAG_INITIALIZED = 1, 88 IPOIB_FLAG_ADMIN_UP = 2, 89 IPOIB_PKEY_ASSIGNED = 3, 90 IPOIB_FLAG_SUBINTERFACE = 5, 91 IPOIB_STOP_REAPER = 7, 92 IPOIB_FLAG_ADMIN_CM = 9, 93 IPOIB_FLAG_UMCAST = 10, 94 IPOIB_STOP_NEIGH_GC = 11, 95 IPOIB_NEIGH_TBL_FLUSH = 12, 96 IPOIB_FLAG_DEV_ADDR_SET = 13, 97 IPOIB_FLAG_DEV_ADDR_CTRL = 14, 98 IPOIB_FLAG_GOING_DOWN = 15, 99 100 IPOIB_MAX_BACKOFF_SECONDS = 16, 101 102 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */ 103 IPOIB_MCAST_FLAG_SENDONLY = 1, 104 /* 105 * For IPOIB_MCAST_FLAG_BUSY 106 * When set, in flight join and mcast->mc is unreliable 107 * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or 108 * haven't started yet 109 * When clear and mcast->mc is valid pointer, join was successful 110 */ 111 IPOIB_MCAST_FLAG_BUSY = 2, 112 IPOIB_MCAST_FLAG_ATTACHED = 3, 113 114 MAX_SEND_CQE = 16, 115 IPOIB_CM_COPYBREAK = 256, 116 117 IPOIB_NON_CHILD = 0, 118 IPOIB_LEGACY_CHILD = 1, 119 IPOIB_RTNL_CHILD = 2, 120 }; 121 122 #define IPOIB_OP_RECV (1ul << 31) 123 #ifdef CONFIG_INFINIBAND_IPOIB_CM 124 #define IPOIB_OP_CM (1ul << 30) 125 #else 126 #define IPOIB_OP_CM (0) 127 #endif 128 129 #define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF)) 130 131 /* structs */ 132 133 struct ipoib_header { 134 __be16 proto; 135 u16 reserved; 136 }; 137 138 struct ipoib_pseudo_header { 139 u8 hwaddr[INFINIBAND_ALEN]; 140 }; 141 142 static inline void skb_add_pseudo_hdr(struct sk_buff *skb) 143 { 144 char *data = skb_push(skb, IPOIB_PSEUDO_LEN); 145 146 /* 147 * only the ipoib header is present now, make room for a dummy 148 * pseudo header and set skb field accordingly 149 */ 150 memset(data, 0, IPOIB_PSEUDO_LEN); 151 skb_reset_mac_header(skb); 152 skb_pull(skb, IPOIB_HARD_LEN); 153 } 154 155 static inline struct ipoib_dev_priv *ipoib_priv(const struct net_device *dev) 156 { 157 struct rdma_netdev *rn = netdev_priv(dev); 158 159 return rn->clnt_priv; 160 } 161 162 /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */ 163 struct ipoib_mcast { 164 struct ib_sa_mcmember_rec mcmember; 165 struct ib_sa_multicast *mc; 166 struct ipoib_ah *ah; 167 168 struct rb_node rb_node; 169 struct list_head list; 170 171 unsigned long created; 172 unsigned long backoff; 173 unsigned long delay_until; 174 175 unsigned long flags; 176 unsigned char logcount; 177 178 struct list_head neigh_list; 179 180 struct sk_buff_head pkt_queue; 181 182 struct net_device *dev; 183 struct completion done; 184 }; 185 186 struct ipoib_rx_buf { 187 struct sk_buff *skb; 188 u64 mapping[IPOIB_UD_RX_SG]; 189 }; 190 191 struct ipoib_tx_buf { 192 struct sk_buff *skb; 193 u64 mapping[MAX_SKB_FRAGS + 1]; 194 }; 195 196 struct ipoib_cm_tx_buf { 197 struct sk_buff *skb; 198 u64 mapping; 199 }; 200 201 struct ib_cm_id; 202 203 struct ipoib_cm_data { 204 __be32 qpn; /* High byte MUST be ignored on receive */ 205 __be32 mtu; 206 }; 207 208 /* 209 * Quoting 10.3.1 Queue Pair and EE Context States: 210 * 211 * Note, for QPs that are associated with an SRQ, the Consumer should take the 212 * QP through the Error State before invoking a Destroy QP or a Modify QP to the 213 * Reset State. The Consumer may invoke the Destroy QP without first performing 214 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous 215 * Last WQE Reached Event. However, if the Consumer does not wait for the 216 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment 217 * leakage may occur. Therefore, it is good programming practice to tear down a 218 * QP that is associated with an SRQ by using the following process: 219 * 220 * - Put the QP in the Error State 221 * - Wait for the Affiliated Asynchronous Last WQE Reached Event; 222 * - either: 223 * drain the CQ by invoking the Poll CQ verb and either wait for CQ 224 * to be empty or the number of Poll CQ operations has exceeded 225 * CQ capacity size; 226 * - or 227 * post another WR that completes on the same CQ and wait for this 228 * WR to return as a WC; 229 * - and then invoke a Destroy QP or Reset QP. 230 * 231 * We use the second option and wait for a completion on the 232 * same CQ before destroying QPs attached to our SRQ. 233 */ 234 235 enum ipoib_cm_state { 236 IPOIB_CM_RX_LIVE, 237 IPOIB_CM_RX_ERROR, /* Ignored by stale task */ 238 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */ 239 }; 240 241 struct ipoib_cm_rx { 242 struct ib_cm_id *id; 243 struct ib_qp *qp; 244 struct ipoib_cm_rx_buf *rx_ring; 245 struct list_head list; 246 struct net_device *dev; 247 unsigned long jiffies; 248 enum ipoib_cm_state state; 249 int recv_count; 250 }; 251 252 struct ipoib_cm_tx { 253 struct ib_cm_id *id; 254 struct ib_qp *qp; 255 struct list_head list; 256 struct net_device *dev; 257 struct ipoib_neigh *neigh; 258 struct ipoib_path *path; 259 struct ipoib_tx_buf *tx_ring; 260 unsigned tx_head; 261 unsigned tx_tail; 262 unsigned long flags; 263 u32 mtu; 264 unsigned max_send_sge; 265 }; 266 267 struct ipoib_cm_rx_buf { 268 struct sk_buff *skb; 269 u64 mapping[IPOIB_CM_RX_SG]; 270 }; 271 272 struct ipoib_cm_dev_priv { 273 struct ib_srq *srq; 274 struct ipoib_cm_rx_buf *srq_ring; 275 struct ib_cm_id *id; 276 struct list_head passive_ids; /* state: LIVE */ 277 struct list_head rx_error_list; /* state: ERROR */ 278 struct list_head rx_flush_list; /* state: FLUSH, drain not started */ 279 struct list_head rx_drain_list; /* state: FLUSH, drain started */ 280 struct list_head rx_reap_list; /* state: FLUSH, drain done */ 281 struct work_struct start_task; 282 struct work_struct reap_task; 283 struct work_struct skb_task; 284 struct work_struct rx_reap_task; 285 struct delayed_work stale_task; 286 struct sk_buff_head skb_queue; 287 struct list_head start_list; 288 struct list_head reap_list; 289 struct ib_wc ibwc[IPOIB_NUM_WC]; 290 struct ib_sge rx_sge[IPOIB_CM_RX_SG]; 291 struct ib_recv_wr rx_wr; 292 int nonsrq_conn_qp; 293 int max_cm_mtu; 294 int num_frags; 295 }; 296 297 struct ipoib_ethtool_st { 298 u16 coalesce_usecs; 299 u16 max_coalesced_frames; 300 }; 301 302 struct ipoib_neigh_table; 303 304 struct ipoib_neigh_hash { 305 struct ipoib_neigh_table *ntbl; 306 struct ipoib_neigh __rcu **buckets; 307 struct rcu_head rcu; 308 u32 mask; 309 u32 size; 310 }; 311 312 struct ipoib_neigh_table { 313 struct ipoib_neigh_hash __rcu *htbl; 314 atomic_t entries; 315 struct completion flushed; 316 struct completion deleted; 317 }; 318 319 struct ipoib_qp_state_validate { 320 struct work_struct work; 321 struct ipoib_dev_priv *priv; 322 }; 323 324 /* 325 * Device private locking: network stack tx_lock protects members used 326 * in TX fast path, lock protects everything else. lock nests inside 327 * of tx_lock (ie tx_lock must be acquired first if needed). 328 */ 329 struct ipoib_dev_priv { 330 spinlock_t lock; 331 332 struct net_device *dev; 333 334 struct napi_struct napi; 335 336 unsigned long flags; 337 338 struct rw_semaphore vlan_rwsem; 339 struct mutex mcast_mutex; 340 341 struct rb_root path_tree; 342 struct list_head path_list; 343 344 struct ipoib_neigh_table ntbl; 345 346 struct ipoib_mcast *broadcast; 347 struct list_head multicast_list; 348 struct rb_root multicast_tree; 349 350 struct workqueue_struct *wq; 351 struct delayed_work mcast_task; 352 struct work_struct carrier_on_task; 353 struct work_struct flush_light; 354 struct work_struct flush_normal; 355 struct work_struct flush_heavy; 356 struct work_struct restart_task; 357 struct delayed_work ah_reap_task; 358 struct delayed_work neigh_reap_task; 359 struct ib_device *ca; 360 u8 port; 361 u16 pkey; 362 u16 pkey_index; 363 struct ib_pd *pd; 364 struct ib_cq *recv_cq; 365 struct ib_cq *send_cq; 366 struct ib_qp *qp; 367 u32 qkey; 368 369 union ib_gid local_gid; 370 u16 local_lid; 371 372 unsigned int admin_mtu; 373 unsigned int mcast_mtu; 374 unsigned int max_ib_mtu; 375 376 struct ipoib_rx_buf *rx_ring; 377 378 struct ipoib_tx_buf *tx_ring; 379 unsigned tx_head; 380 unsigned tx_tail; 381 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; 382 struct ib_ud_wr tx_wr; 383 unsigned tx_outstanding; 384 struct ib_wc send_wc[MAX_SEND_CQE]; 385 386 struct ib_recv_wr rx_wr; 387 struct ib_sge rx_sge[IPOIB_UD_RX_SG]; 388 389 struct ib_wc ibwc[IPOIB_NUM_WC]; 390 391 struct list_head dead_ahs; 392 393 struct ib_event_handler event_handler; 394 395 struct net_device *parent; 396 struct list_head child_intfs; 397 struct list_head list; 398 int child_type; 399 400 #ifdef CONFIG_INFINIBAND_IPOIB_CM 401 struct ipoib_cm_dev_priv cm; 402 #endif 403 404 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 405 struct list_head fs_list; 406 struct dentry *mcg_dentry; 407 struct dentry *path_dentry; 408 #endif 409 u64 hca_caps; 410 struct ipoib_ethtool_st ethtool; 411 struct timer_list poll_timer; 412 unsigned max_send_sge; 413 bool sm_fullmember_sendonly_support; 414 const struct net_device_ops *rn_ops; 415 }; 416 417 struct ipoib_ah { 418 struct net_device *dev; 419 struct ib_ah *ah; 420 struct list_head list; 421 struct kref ref; 422 unsigned last_send; 423 }; 424 425 struct ipoib_path { 426 struct net_device *dev; 427 struct sa_path_rec pathrec; 428 struct ipoib_ah *ah; 429 struct sk_buff_head queue; 430 431 struct list_head neigh_list; 432 433 int query_id; 434 struct ib_sa_query *query; 435 struct completion done; 436 437 struct rb_node rb_node; 438 struct list_head list; 439 int valid; 440 }; 441 442 struct ipoib_neigh { 443 struct ipoib_ah *ah; 444 #ifdef CONFIG_INFINIBAND_IPOIB_CM 445 struct ipoib_cm_tx *cm; 446 #endif 447 u8 daddr[INFINIBAND_ALEN]; 448 struct sk_buff_head queue; 449 450 struct net_device *dev; 451 452 struct list_head list; 453 struct ipoib_neigh __rcu *hnext; 454 struct rcu_head rcu; 455 atomic_t refcnt; 456 unsigned long alive; 457 }; 458 459 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN) 460 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES) 461 462 void ipoib_neigh_dtor(struct ipoib_neigh *neigh); 463 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh) 464 { 465 if (atomic_dec_and_test(&neigh->refcnt)) 466 ipoib_neigh_dtor(neigh); 467 } 468 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr); 469 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr, 470 struct net_device *dev); 471 void ipoib_neigh_free(struct ipoib_neigh *neigh); 472 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid); 473 474 extern struct workqueue_struct *ipoib_workqueue; 475 476 /* functions */ 477 478 int ipoib_poll(struct napi_struct *napi, int budget); 479 void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr); 480 void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr); 481 482 struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 483 struct ib_pd *pd, struct rdma_ah_attr *attr); 484 void ipoib_free_ah(struct kref *kref); 485 static inline void ipoib_put_ah(struct ipoib_ah *ah) 486 { 487 kref_put(&ah->ref, ipoib_free_ah); 488 } 489 int ipoib_open(struct net_device *dev); 490 int ipoib_add_pkey_attr(struct net_device *dev); 491 int ipoib_add_umcast_attr(struct net_device *dev); 492 493 int ipoib_send(struct net_device *dev, struct sk_buff *skb, 494 struct ib_ah *address, u32 dqpn); 495 void ipoib_reap_ah(struct work_struct *work); 496 497 struct ipoib_path *__path_find(struct net_device *dev, void *gid); 498 void ipoib_mark_paths_invalid(struct net_device *dev); 499 void ipoib_flush_paths(struct net_device *dev); 500 struct ipoib_dev_priv *ipoib_intf_alloc(struct ib_device *hca, u8 port, 501 const char *format); 502 void ipoib_ib_tx_timer_func(unsigned long ctx); 503 void ipoib_ib_dev_flush_light(struct work_struct *work); 504 void ipoib_ib_dev_flush_normal(struct work_struct *work); 505 void ipoib_ib_dev_flush_heavy(struct work_struct *work); 506 void ipoib_pkey_event(struct work_struct *work); 507 void ipoib_ib_dev_cleanup(struct net_device *dev); 508 509 int ipoib_ib_dev_open_default(struct net_device *dev); 510 int ipoib_ib_dev_open(struct net_device *dev); 511 int ipoib_ib_dev_stop(struct net_device *dev); 512 void ipoib_ib_dev_up(struct net_device *dev); 513 void ipoib_ib_dev_down(struct net_device *dev); 514 int ipoib_ib_dev_stop_default(struct net_device *dev); 515 void ipoib_pkey_dev_check_presence(struct net_device *dev); 516 517 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port); 518 void ipoib_dev_cleanup(struct net_device *dev); 519 520 void ipoib_mcast_join_task(struct work_struct *work); 521 void ipoib_mcast_carrier_on_task(struct work_struct *work); 522 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb); 523 524 void ipoib_mcast_restart_task(struct work_struct *work); 525 void ipoib_mcast_start_thread(struct net_device *dev); 526 int ipoib_mcast_stop_thread(struct net_device *dev); 527 528 void ipoib_mcast_dev_down(struct net_device *dev); 529 void ipoib_mcast_dev_flush(struct net_device *dev); 530 531 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req); 532 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv, 533 struct ipoib_tx_buf *tx_req); 534 535 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv, 536 struct ipoib_tx_buf *tx_req) 537 { 538 int i, off; 539 struct sk_buff *skb = tx_req->skb; 540 skb_frag_t *frags = skb_shinfo(skb)->frags; 541 int nr_frags = skb_shinfo(skb)->nr_frags; 542 u64 *mapping = tx_req->mapping; 543 544 if (skb_headlen(skb)) { 545 priv->tx_sge[0].addr = mapping[0]; 546 priv->tx_sge[0].length = skb_headlen(skb); 547 off = 1; 548 } else 549 off = 0; 550 551 for (i = 0; i < nr_frags; ++i) { 552 priv->tx_sge[i + off].addr = mapping[i + off]; 553 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]); 554 } 555 priv->tx_wr.wr.num_sge = nr_frags + off; 556 } 557 558 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 559 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 560 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 561 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 562 union ib_gid *gid, 563 unsigned long *created, 564 unsigned int *queuelen, 565 unsigned int *complete, 566 unsigned int *send_only); 567 568 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 569 int ipoib_path_iter_next(struct ipoib_path_iter *iter); 570 void ipoib_path_iter_read(struct ipoib_path_iter *iter, 571 struct ipoib_path *path); 572 #endif 573 574 int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca, 575 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey); 576 int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca, 577 union ib_gid *mgid, u16 mlid); 578 void ipoib_mcast_remove_list(struct list_head *remove_list); 579 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid, 580 struct list_head *remove_list); 581 582 int ipoib_init_qp(struct net_device *dev); 583 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 584 void ipoib_transport_dev_cleanup(struct net_device *dev); 585 586 void ipoib_event(struct ib_event_handler *handler, 587 struct ib_event *record); 588 589 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 590 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 591 592 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, 593 u16 pkey, int child_type); 594 595 int __init ipoib_netlink_init(void); 596 void __exit ipoib_netlink_fini(void); 597 598 void ipoib_set_umcast(struct net_device *ndev, int umcast_val); 599 int ipoib_set_mode(struct net_device *dev, const char *buf); 600 601 void ipoib_setup_common(struct net_device *dev); 602 603 void ipoib_pkey_open(struct ipoib_dev_priv *priv); 604 void ipoib_drain_cq(struct net_device *dev); 605 606 void ipoib_set_ethtool_ops(struct net_device *dev); 607 void ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca); 608 609 #define IPOIB_FLAGS_RC 0x80 610 #define IPOIB_FLAGS_UC 0x40 611 612 /* We don't support UC connections at the moment */ 613 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC)) 614 615 #ifdef CONFIG_INFINIBAND_IPOIB_CM 616 617 extern int ipoib_max_conn_qp; 618 619 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 620 { 621 struct ipoib_dev_priv *priv = ipoib_priv(dev); 622 return IPOIB_CM_SUPPORTED(dev->dev_addr) && 623 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 624 } 625 626 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 627 { 628 struct ipoib_dev_priv *priv = ipoib_priv(dev); 629 return IPOIB_CM_SUPPORTED(hwaddr) && 630 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 631 } 632 633 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 634 635 { 636 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags); 637 } 638 639 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 640 { 641 return neigh->cm; 642 } 643 644 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 645 { 646 neigh->cm = tx; 647 } 648 649 static inline int ipoib_cm_has_srq(struct net_device *dev) 650 { 651 struct ipoib_dev_priv *priv = ipoib_priv(dev); 652 return !!priv->cm.srq; 653 } 654 655 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 656 { 657 struct ipoib_dev_priv *priv = ipoib_priv(dev); 658 return priv->cm.max_cm_mtu; 659 } 660 661 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx); 662 int ipoib_cm_dev_open(struct net_device *dev); 663 void ipoib_cm_dev_stop(struct net_device *dev); 664 int ipoib_cm_dev_init(struct net_device *dev); 665 int ipoib_cm_add_mode_attr(struct net_device *dev); 666 void ipoib_cm_dev_cleanup(struct net_device *dev); 667 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 668 struct ipoib_neigh *neigh); 669 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx); 670 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 671 unsigned int mtu); 672 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc); 673 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc); 674 #else 675 676 struct ipoib_cm_tx; 677 678 #define ipoib_max_conn_qp 0 679 680 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 681 { 682 return 0; 683 } 684 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 685 686 { 687 return 0; 688 } 689 690 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 691 692 { 693 return 0; 694 } 695 696 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 697 { 698 return NULL; 699 } 700 701 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 702 { 703 } 704 705 static inline int ipoib_cm_has_srq(struct net_device *dev) 706 { 707 return 0; 708 } 709 710 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 711 { 712 return 0; 713 } 714 715 static inline 716 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx) 717 { 718 return; 719 } 720 721 static inline 722 int ipoib_cm_dev_open(struct net_device *dev) 723 { 724 return 0; 725 } 726 727 static inline 728 void ipoib_cm_dev_stop(struct net_device *dev) 729 { 730 return; 731 } 732 733 static inline 734 int ipoib_cm_dev_init(struct net_device *dev) 735 { 736 return -ENOSYS; 737 } 738 739 static inline 740 void ipoib_cm_dev_cleanup(struct net_device *dev) 741 { 742 return; 743 } 744 745 static inline 746 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 747 struct ipoib_neigh *neigh) 748 { 749 return NULL; 750 } 751 752 static inline 753 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx) 754 { 755 return; 756 } 757 758 static inline 759 int ipoib_cm_add_mode_attr(struct net_device *dev) 760 { 761 return 0; 762 } 763 764 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 765 unsigned int mtu) 766 { 767 dev_kfree_skb_any(skb); 768 } 769 770 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) 771 { 772 } 773 774 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) 775 { 776 } 777 #endif 778 779 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 780 void ipoib_create_debug_files(struct net_device *dev); 781 void ipoib_delete_debug_files(struct net_device *dev); 782 int ipoib_register_debugfs(void); 783 void ipoib_unregister_debugfs(void); 784 #else 785 static inline void ipoib_create_debug_files(struct net_device *dev) { } 786 static inline void ipoib_delete_debug_files(struct net_device *dev) { } 787 static inline int ipoib_register_debugfs(void) { return 0; } 788 static inline void ipoib_unregister_debugfs(void) { } 789 #endif 790 791 #define ipoib_printk(level, priv, format, arg...) \ 792 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 793 #define ipoib_warn(priv, format, arg...) \ 794 do { \ 795 static DEFINE_RATELIMIT_STATE(_rs, \ 796 10 * HZ /*10 seconds */, \ 797 100); \ 798 if (__ratelimit(&_rs)) \ 799 ipoib_printk(KERN_WARNING, priv, format , ## arg);\ 800 } while (0) 801 802 extern int ipoib_sendq_size; 803 extern int ipoib_recvq_size; 804 805 extern struct ib_sa_client ipoib_sa_client; 806 807 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 808 extern int ipoib_debug_level; 809 810 #define ipoib_dbg(priv, format, arg...) \ 811 do { \ 812 if (ipoib_debug_level > 0) \ 813 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 814 } while (0) 815 #define ipoib_dbg_mcast(priv, format, arg...) \ 816 do { \ 817 if (mcast_debug_level > 0) \ 818 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 819 } while (0) 820 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 821 #define ipoib_dbg(priv, format, arg...) \ 822 do { (void) (priv); } while (0) 823 #define ipoib_dbg_mcast(priv, format, arg...) \ 824 do { (void) (priv); } while (0) 825 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 826 827 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 828 #define ipoib_dbg_data(priv, format, arg...) \ 829 do { \ 830 if (data_debug_level > 0) \ 831 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 832 } while (0) 833 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 834 #define ipoib_dbg_data(priv, format, arg...) \ 835 do { (void) (priv); } while (0) 836 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 837 838 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff) 839 840 extern const char ipoib_driver_version[]; 841 842 #endif /* _IPOIB_H */ 843