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