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