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