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 unsigned int tx_head; 381 unsigned int tx_tail; 382 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; 383 struct ib_ud_wr tx_wr; 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 unsigned int max_send_sge; 412 bool sm_fullmember_sendonly_support; 413 const struct net_device_ops *rn_ops; 414 }; 415 416 struct ipoib_ah { 417 struct net_device *dev; 418 struct ib_ah *ah; 419 struct list_head list; 420 struct kref ref; 421 unsigned int last_send; 422 int valid; 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 }; 440 441 struct ipoib_neigh { 442 struct ipoib_ah *ah; 443 #ifdef CONFIG_INFINIBAND_IPOIB_CM 444 struct ipoib_cm_tx *cm; 445 #endif 446 u8 daddr[INFINIBAND_ALEN]; 447 struct sk_buff_head queue; 448 449 struct net_device *dev; 450 451 struct list_head list; 452 struct ipoib_neigh __rcu *hnext; 453 struct rcu_head rcu; 454 atomic_t refcnt; 455 unsigned long alive; 456 }; 457 458 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN) 459 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES) 460 461 void ipoib_neigh_dtor(struct ipoib_neigh *neigh); 462 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh) 463 { 464 if (atomic_dec_and_test(&neigh->refcnt)) 465 ipoib_neigh_dtor(neigh); 466 } 467 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr); 468 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr, 469 struct net_device *dev); 470 void ipoib_neigh_free(struct ipoib_neigh *neigh); 471 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid); 472 473 extern struct workqueue_struct *ipoib_workqueue; 474 475 /* functions */ 476 477 int ipoib_rx_poll(struct napi_struct *napi, int budget); 478 int ipoib_tx_poll(struct napi_struct *napi, int budget); 479 void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr); 480 void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_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 void ipoib_intf_free(struct net_device *dev); 491 int ipoib_add_pkey_attr(struct net_device *dev); 492 int ipoib_add_umcast_attr(struct net_device *dev); 493 494 int ipoib_send(struct net_device *dev, struct sk_buff *skb, 495 struct ib_ah *address, u32 dqpn); 496 void ipoib_reap_ah(struct work_struct *work); 497 498 struct ipoib_path *__path_find(struct net_device *dev, void *gid); 499 void ipoib_mark_paths_invalid(struct net_device *dev); 500 void ipoib_flush_paths(struct net_device *dev); 501 struct net_device *ipoib_intf_alloc(struct ib_device *hca, u8 port, 502 const char *format); 503 int ipoib_intf_init(struct ib_device *hca, u8 port, const char *format, 504 struct net_device *dev); 505 void ipoib_ib_tx_timer_func(struct timer_list *t); 506 void ipoib_ib_dev_flush_light(struct work_struct *work); 507 void ipoib_ib_dev_flush_normal(struct work_struct *work); 508 void ipoib_ib_dev_flush_heavy(struct work_struct *work); 509 void ipoib_pkey_event(struct work_struct *work); 510 void ipoib_ib_dev_cleanup(struct net_device *dev); 511 512 int ipoib_ib_dev_open_default(struct net_device *dev); 513 int ipoib_ib_dev_open(struct net_device *dev); 514 int ipoib_ib_dev_stop(struct net_device *dev); 515 void ipoib_ib_dev_up(struct net_device *dev); 516 void ipoib_ib_dev_down(struct net_device *dev); 517 int ipoib_ib_dev_stop_default(struct net_device *dev); 518 void ipoib_pkey_dev_check_presence(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 struct rtnl_link_ops *ipoib_get_link_ops(void); 536 537 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv, 538 struct ipoib_tx_buf *tx_req) 539 { 540 int i, off; 541 struct sk_buff *skb = tx_req->skb; 542 skb_frag_t *frags = skb_shinfo(skb)->frags; 543 int nr_frags = skb_shinfo(skb)->nr_frags; 544 u64 *mapping = tx_req->mapping; 545 546 if (skb_headlen(skb)) { 547 priv->tx_sge[0].addr = mapping[0]; 548 priv->tx_sge[0].length = skb_headlen(skb); 549 off = 1; 550 } else 551 off = 0; 552 553 for (i = 0; i < nr_frags; ++i) { 554 priv->tx_sge[i + off].addr = mapping[i + off]; 555 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]); 556 } 557 priv->tx_wr.wr.num_sge = nr_frags + off; 558 } 559 560 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 561 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 562 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 563 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 564 union ib_gid *gid, 565 unsigned long *created, 566 unsigned int *queuelen, 567 unsigned int *complete, 568 unsigned int *send_only); 569 570 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 571 int ipoib_path_iter_next(struct ipoib_path_iter *iter); 572 void ipoib_path_iter_read(struct ipoib_path_iter *iter, 573 struct ipoib_path *path); 574 #endif 575 576 int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca, 577 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey); 578 int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca, 579 union ib_gid *mgid, u16 mlid); 580 void ipoib_mcast_remove_list(struct list_head *remove_list); 581 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid, 582 struct list_head *remove_list); 583 584 int ipoib_init_qp(struct net_device *dev); 585 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 586 void ipoib_transport_dev_cleanup(struct net_device *dev); 587 588 void ipoib_event(struct ib_event_handler *handler, 589 struct ib_event *record); 590 591 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 592 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 593 594 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, 595 u16 pkey, int child_type); 596 597 int __init ipoib_netlink_init(void); 598 void __exit ipoib_netlink_fini(void); 599 600 void ipoib_set_umcast(struct net_device *ndev, int umcast_val); 601 int ipoib_set_mode(struct net_device *dev, const char *buf); 602 603 void ipoib_setup_common(struct net_device *dev); 604 605 void ipoib_pkey_open(struct ipoib_dev_priv *priv); 606 void ipoib_drain_cq(struct net_device *dev); 607 608 void ipoib_set_ethtool_ops(struct net_device *dev); 609 610 #define IPOIB_FLAGS_RC 0x80 611 #define IPOIB_FLAGS_UC 0x40 612 613 /* We don't support UC connections at the moment */ 614 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC)) 615 616 #ifdef CONFIG_INFINIBAND_IPOIB_CM 617 618 extern int ipoib_max_conn_qp; 619 620 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 621 { 622 struct ipoib_dev_priv *priv = ipoib_priv(dev); 623 return IPOIB_CM_SUPPORTED(dev->dev_addr) && 624 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 625 } 626 627 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 628 { 629 struct ipoib_dev_priv *priv = ipoib_priv(dev); 630 return IPOIB_CM_SUPPORTED(hwaddr) && 631 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 632 } 633 634 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 635 636 { 637 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags); 638 } 639 640 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 641 { 642 return neigh->cm; 643 } 644 645 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 646 { 647 neigh->cm = tx; 648 } 649 650 static inline int ipoib_cm_has_srq(struct net_device *dev) 651 { 652 struct ipoib_dev_priv *priv = ipoib_priv(dev); 653 return !!priv->cm.srq; 654 } 655 656 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 657 { 658 struct ipoib_dev_priv *priv = ipoib_priv(dev); 659 return priv->cm.max_cm_mtu; 660 } 661 662 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx); 663 int ipoib_cm_dev_open(struct net_device *dev); 664 void ipoib_cm_dev_stop(struct net_device *dev); 665 int ipoib_cm_dev_init(struct net_device *dev); 666 int ipoib_cm_add_mode_attr(struct net_device *dev); 667 void ipoib_cm_dev_cleanup(struct net_device *dev); 668 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 669 struct ipoib_neigh *neigh); 670 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx); 671 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 672 unsigned int mtu); 673 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc); 674 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc); 675 #else 676 677 struct ipoib_cm_tx; 678 679 #define ipoib_max_conn_qp 0 680 681 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 682 { 683 return 0; 684 } 685 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 686 687 { 688 return 0; 689 } 690 691 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 692 693 { 694 return 0; 695 } 696 697 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 698 { 699 return NULL; 700 } 701 702 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 703 { 704 } 705 706 static inline int ipoib_cm_has_srq(struct net_device *dev) 707 { 708 return 0; 709 } 710 711 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 712 { 713 return 0; 714 } 715 716 static inline 717 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx) 718 { 719 return; 720 } 721 722 static inline 723 int ipoib_cm_dev_open(struct net_device *dev) 724 { 725 return 0; 726 } 727 728 static inline 729 void ipoib_cm_dev_stop(struct net_device *dev) 730 { 731 return; 732 } 733 734 static inline 735 int ipoib_cm_dev_init(struct net_device *dev) 736 { 737 return -EOPNOTSUPP; 738 } 739 740 static inline 741 void ipoib_cm_dev_cleanup(struct net_device *dev) 742 { 743 return; 744 } 745 746 static inline 747 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 748 struct ipoib_neigh *neigh) 749 { 750 return NULL; 751 } 752 753 static inline 754 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx) 755 { 756 return; 757 } 758 759 static inline 760 int ipoib_cm_add_mode_attr(struct net_device *dev) 761 { 762 return 0; 763 } 764 765 static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 766 unsigned int mtu) 767 { 768 dev_kfree_skb_any(skb); 769 } 770 771 static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) 772 { 773 } 774 775 static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) 776 { 777 } 778 #endif 779 780 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 781 void ipoib_create_debug_files(struct net_device *dev); 782 void ipoib_delete_debug_files(struct net_device *dev); 783 void ipoib_register_debugfs(void); 784 void ipoib_unregister_debugfs(void); 785 #else 786 static inline void ipoib_create_debug_files(struct net_device *dev) { } 787 static inline void ipoib_delete_debug_files(struct net_device *dev) { } 788 static inline void ipoib_register_debugfs(void) { } 789 static inline void ipoib_unregister_debugfs(void) { } 790 #endif 791 792 #define ipoib_printk(level, priv, format, arg...) \ 793 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 794 #define ipoib_warn(priv, format, arg...) \ 795 do { \ 796 static DEFINE_RATELIMIT_STATE(_rs, \ 797 10 * HZ /*10 seconds */, \ 798 100); \ 799 if (__ratelimit(&_rs)) \ 800 ipoib_printk(KERN_WARNING, priv, format , ## arg);\ 801 } while (0) 802 803 extern int ipoib_sendq_size; 804 extern int ipoib_recvq_size; 805 806 extern struct ib_sa_client ipoib_sa_client; 807 808 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 809 extern int ipoib_debug_level; 810 811 #define ipoib_dbg(priv, format, arg...) \ 812 do { \ 813 if (ipoib_debug_level > 0) \ 814 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 815 } while (0) 816 #define ipoib_dbg_mcast(priv, format, arg...) \ 817 do { \ 818 if (mcast_debug_level > 0) \ 819 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 820 } while (0) 821 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 822 #define ipoib_dbg(priv, format, arg...) \ 823 do { (void) (priv); } while (0) 824 #define ipoib_dbg_mcast(priv, format, arg...) \ 825 do { (void) (priv); } while (0) 826 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 827 828 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 829 #define ipoib_dbg_data(priv, format, arg...) \ 830 do { \ 831 if (data_debug_level > 0) \ 832 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 833 } while (0) 834 #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 835 #define ipoib_dbg_data(priv, format, arg...) \ 836 do { (void) (priv); } while (0) 837 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 838 839 #define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff) 840 841 #endif /* _IPOIB_H */ 842