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_path *path; 252 struct ipoib_tx_buf *tx_ring; 253 unsigned int tx_head; 254 unsigned int tx_tail; 255 unsigned long flags; 256 u32 mtu; 257 unsigned int max_send_sge; 258 }; 259 260 struct ipoib_cm_rx_buf { 261 struct sk_buff *skb; 262 u64 mapping[IPOIB_CM_RX_SG]; 263 }; 264 265 struct ipoib_cm_dev_priv { 266 struct ib_srq *srq; 267 struct ipoib_cm_rx_buf *srq_ring; 268 struct ib_cm_id *id; 269 struct list_head passive_ids; /* state: LIVE */ 270 struct list_head rx_error_list; /* state: ERROR */ 271 struct list_head rx_flush_list; /* state: FLUSH, drain not started */ 272 struct list_head rx_drain_list; /* state: FLUSH, drain started */ 273 struct list_head rx_reap_list; /* state: FLUSH, drain done */ 274 struct work_struct start_task; 275 struct work_struct reap_task; 276 struct work_struct skb_task; 277 struct work_struct rx_reap_task; 278 struct delayed_work stale_task; 279 struct sk_buff_head skb_queue; 280 struct list_head start_list; 281 struct list_head reap_list; 282 struct ib_wc ibwc[IPOIB_NUM_WC]; 283 struct ib_sge rx_sge[IPOIB_CM_RX_SG]; 284 struct ib_recv_wr rx_wr; 285 int nonsrq_conn_qp; 286 int max_cm_mtu; 287 int num_frags; 288 }; 289 290 struct ipoib_ethtool_st { 291 u16 coalesce_usecs; 292 u16 max_coalesced_frames; 293 }; 294 295 struct ipoib_neigh_table; 296 297 struct ipoib_neigh_hash { 298 struct ipoib_neigh_table *ntbl; 299 struct ipoib_neigh __rcu **buckets; 300 struct rcu_head rcu; 301 u32 mask; 302 u32 size; 303 }; 304 305 struct ipoib_neigh_table { 306 struct ipoib_neigh_hash __rcu *htbl; 307 atomic_t entries; 308 struct completion flushed; 309 struct completion deleted; 310 }; 311 312 struct ipoib_qp_state_validate { 313 struct work_struct work; 314 struct ipoib_dev_priv *priv; 315 }; 316 317 /* 318 * Device private locking: network stack tx_lock protects members used 319 * in TX fast path, lock protects everything else. lock nests inside 320 * of tx_lock (ie tx_lock must be acquired first if needed). 321 */ 322 struct ipoib_dev_priv { 323 spinlock_t lock; 324 325 struct net_device *dev; 326 void (*next_priv_destructor)(struct net_device *dev); 327 328 struct napi_struct send_napi; 329 struct napi_struct recv_napi; 330 331 unsigned long flags; 332 333 /* 334 * This protects access to the child_intfs list. 335 * To READ from child_intfs the RTNL or vlan_rwsem read side must be 336 * held. To WRITE RTNL and the vlan_rwsem write side must be held (in 337 * that order) This lock exists because we have a few contexts where 338 * we need the child_intfs, but do not want to grab the RTNL. 339 */ 340 struct rw_semaphore vlan_rwsem; 341 struct mutex mcast_mutex; 342 343 struct rb_root path_tree; 344 struct list_head path_list; 345 346 struct ipoib_neigh_table ntbl; 347 348 struct ipoib_mcast *broadcast; 349 struct list_head multicast_list; 350 struct rb_root multicast_tree; 351 352 struct workqueue_struct *wq; 353 struct delayed_work mcast_task; 354 struct work_struct carrier_on_task; 355 struct work_struct flush_light; 356 struct work_struct flush_normal; 357 struct work_struct flush_heavy; 358 struct work_struct restart_task; 359 struct delayed_work ah_reap_task; 360 struct delayed_work neigh_reap_task; 361 struct ib_device *ca; 362 u8 port; 363 u16 pkey; 364 u16 pkey_index; 365 struct ib_pd *pd; 366 struct ib_cq *recv_cq; 367 struct ib_cq *send_cq; 368 struct ib_qp *qp; 369 u32 qkey; 370 371 union ib_gid local_gid; 372 u32 local_lid; 373 374 unsigned int admin_mtu; 375 unsigned int mcast_mtu; 376 unsigned int max_ib_mtu; 377 378 struct ipoib_rx_buf *rx_ring; 379 380 struct ipoib_tx_buf *tx_ring; 381 unsigned int tx_head; 382 unsigned int tx_tail; 383 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; 384 struct ib_ud_wr tx_wr; 385 struct ib_wc send_wc[MAX_SEND_CQE]; 386 387 struct ib_recv_wr rx_wr; 388 struct ib_sge rx_sge[IPOIB_UD_RX_SG]; 389 390 struct ib_wc ibwc[IPOIB_NUM_WC]; 391 392 struct list_head dead_ahs; 393 394 struct ib_event_handler event_handler; 395 396 struct net_device *parent; 397 struct list_head child_intfs; 398 struct list_head list; 399 int child_type; 400 401 #ifdef CONFIG_INFINIBAND_IPOIB_CM 402 struct ipoib_cm_dev_priv cm; 403 #endif 404 405 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 406 struct list_head fs_list; 407 struct dentry *mcg_dentry; 408 struct dentry *path_dentry; 409 #endif 410 u64 hca_caps; 411 struct ipoib_ethtool_st ethtool; 412 unsigned int max_send_sge; 413 bool sm_fullmember_sendonly_support; 414 const struct net_device_ops *rn_ops; 415 }; 416 417 struct ipoib_ah { 418 struct net_device *dev; 419 struct ib_ah *ah; 420 struct list_head list; 421 struct kref ref; 422 unsigned int last_send; 423 int valid; 424 }; 425 426 struct ipoib_path { 427 struct net_device *dev; 428 struct sa_path_rec pathrec; 429 struct ipoib_ah *ah; 430 struct sk_buff_head queue; 431 432 struct list_head neigh_list; 433 434 int query_id; 435 struct ib_sa_query *query; 436 struct completion done; 437 438 struct rb_node rb_node; 439 struct list_head list; 440 }; 441 442 struct ipoib_neigh { 443 struct ipoib_ah *ah; 444 #ifdef CONFIG_INFINIBAND_IPOIB_CM 445 struct ipoib_cm_tx *cm; 446 #endif 447 u8 daddr[INFINIBAND_ALEN]; 448 struct sk_buff_head queue; 449 450 struct net_device *dev; 451 452 struct list_head list; 453 struct ipoib_neigh __rcu *hnext; 454 struct rcu_head rcu; 455 atomic_t refcnt; 456 unsigned long alive; 457 }; 458 459 #define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN) 460 #define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES) 461 462 void ipoib_neigh_dtor(struct ipoib_neigh *neigh); 463 static inline void ipoib_neigh_put(struct ipoib_neigh *neigh) 464 { 465 if (atomic_dec_and_test(&neigh->refcnt)) 466 ipoib_neigh_dtor(neigh); 467 } 468 struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr); 469 struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr, 470 struct net_device *dev); 471 void ipoib_neigh_free(struct ipoib_neigh *neigh); 472 void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid); 473 474 extern struct workqueue_struct *ipoib_workqueue; 475 476 /* functions */ 477 478 int ipoib_rx_poll(struct napi_struct *napi, int budget); 479 int ipoib_tx_poll(struct napi_struct *napi, int budget); 480 void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr); 481 void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr); 482 483 struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 484 struct ib_pd *pd, struct rdma_ah_attr *attr); 485 void ipoib_free_ah(struct kref *kref); 486 static inline void ipoib_put_ah(struct ipoib_ah *ah) 487 { 488 kref_put(&ah->ref, ipoib_free_ah); 489 } 490 int ipoib_open(struct net_device *dev); 491 void ipoib_intf_free(struct net_device *dev); 492 int ipoib_add_pkey_attr(struct net_device *dev); 493 int ipoib_add_umcast_attr(struct net_device *dev); 494 495 int ipoib_send(struct net_device *dev, struct sk_buff *skb, 496 struct ib_ah *address, u32 dqpn); 497 void ipoib_reap_ah(struct work_struct *work); 498 499 struct ipoib_path *__path_find(struct net_device *dev, void *gid); 500 void ipoib_mark_paths_invalid(struct net_device *dev); 501 void ipoib_flush_paths(struct net_device *dev); 502 struct net_device *ipoib_intf_alloc(struct ib_device *hca, u8 port, 503 const char *format); 504 int ipoib_intf_init(struct ib_device *hca, u8 port, const char *format, 505 struct net_device *dev); 506 void ipoib_ib_tx_timer_func(struct timer_list *t); 507 void ipoib_ib_dev_flush_light(struct work_struct *work); 508 void ipoib_ib_dev_flush_normal(struct work_struct *work); 509 void ipoib_ib_dev_flush_heavy(struct work_struct *work); 510 void ipoib_pkey_event(struct work_struct *work); 511 void ipoib_ib_dev_cleanup(struct net_device *dev); 512 513 int ipoib_ib_dev_open_default(struct net_device *dev); 514 int ipoib_ib_dev_open(struct net_device *dev); 515 int ipoib_ib_dev_stop(struct net_device *dev); 516 void ipoib_ib_dev_up(struct net_device *dev); 517 void ipoib_ib_dev_down(struct net_device *dev); 518 int ipoib_ib_dev_stop_default(struct net_device *dev); 519 void ipoib_pkey_dev_check_presence(struct net_device *dev); 520 521 void ipoib_mcast_join_task(struct work_struct *work); 522 void ipoib_mcast_carrier_on_task(struct work_struct *work); 523 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb); 524 525 void ipoib_mcast_restart_task(struct work_struct *work); 526 void ipoib_mcast_start_thread(struct net_device *dev); 527 int ipoib_mcast_stop_thread(struct net_device *dev); 528 529 void ipoib_mcast_dev_down(struct net_device *dev); 530 void ipoib_mcast_dev_flush(struct net_device *dev); 531 532 int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req); 533 void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv, 534 struct ipoib_tx_buf *tx_req); 535 536 struct rtnl_link_ops *ipoib_get_link_ops(void); 537 538 static inline void ipoib_build_sge(struct ipoib_dev_priv *priv, 539 struct ipoib_tx_buf *tx_req) 540 { 541 int i, off; 542 struct sk_buff *skb = tx_req->skb; 543 skb_frag_t *frags = skb_shinfo(skb)->frags; 544 int nr_frags = skb_shinfo(skb)->nr_frags; 545 u64 *mapping = tx_req->mapping; 546 547 if (skb_headlen(skb)) { 548 priv->tx_sge[0].addr = mapping[0]; 549 priv->tx_sge[0].length = skb_headlen(skb); 550 off = 1; 551 } else 552 off = 0; 553 554 for (i = 0; i < nr_frags; ++i) { 555 priv->tx_sge[i + off].addr = mapping[i + off]; 556 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]); 557 } 558 priv->tx_wr.wr.num_sge = nr_frags + off; 559 } 560 561 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 562 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 563 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 564 void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 565 union ib_gid *gid, 566 unsigned long *created, 567 unsigned int *queuelen, 568 unsigned int *complete, 569 unsigned int *send_only); 570 571 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 572 int ipoib_path_iter_next(struct ipoib_path_iter *iter); 573 void ipoib_path_iter_read(struct ipoib_path_iter *iter, 574 struct ipoib_path *path); 575 #endif 576 577 int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca, 578 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey); 579 int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca, 580 union ib_gid *mgid, u16 mlid); 581 void ipoib_mcast_remove_list(struct list_head *remove_list); 582 void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid, 583 struct list_head *remove_list); 584 585 int ipoib_init_qp(struct net_device *dev); 586 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 587 void ipoib_transport_dev_cleanup(struct net_device *dev); 588 589 void ipoib_event(struct ib_event_handler *handler, 590 struct ib_event *record); 591 592 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 593 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 594 595 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, 596 u16 pkey, int child_type); 597 598 int __init ipoib_netlink_init(void); 599 void __exit ipoib_netlink_fini(void); 600 601 void ipoib_set_umcast(struct net_device *ndev, int umcast_val); 602 int ipoib_set_mode(struct net_device *dev, const char *buf); 603 604 void ipoib_setup_common(struct net_device *dev); 605 606 void ipoib_pkey_open(struct ipoib_dev_priv *priv); 607 void ipoib_drain_cq(struct net_device *dev); 608 609 void ipoib_set_ethtool_ops(struct net_device *dev); 610 611 #define IPOIB_FLAGS_RC 0x80 612 #define IPOIB_FLAGS_UC 0x40 613 614 /* We don't support UC connections at the moment */ 615 #define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC)) 616 617 #ifdef CONFIG_INFINIBAND_IPOIB_CM 618 619 extern int ipoib_max_conn_qp; 620 621 static inline int ipoib_cm_admin_enabled(struct net_device *dev) 622 { 623 struct ipoib_dev_priv *priv = ipoib_priv(dev); 624 return IPOIB_CM_SUPPORTED(dev->dev_addr) && 625 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 626 } 627 628 static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 629 { 630 struct ipoib_dev_priv *priv = ipoib_priv(dev); 631 return IPOIB_CM_SUPPORTED(hwaddr) && 632 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 633 } 634 635 static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 636 637 { 638 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags); 639 } 640 641 static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 642 { 643 return neigh->cm; 644 } 645 646 static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 647 { 648 neigh->cm = tx; 649 } 650 651 static inline int ipoib_cm_has_srq(struct net_device *dev) 652 { 653 struct ipoib_dev_priv *priv = ipoib_priv(dev); 654 return !!priv->cm.srq; 655 } 656 657 static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 658 { 659 struct ipoib_dev_priv *priv = ipoib_priv(dev); 660 return priv->cm.max_cm_mtu; 661 } 662 663 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx); 664 int ipoib_cm_dev_open(struct net_device *dev); 665 void ipoib_cm_dev_stop(struct net_device *dev); 666 int ipoib_cm_dev_init(struct net_device *dev); 667 int ipoib_cm_add_mode_attr(struct net_device *dev); 668 void ipoib_cm_dev_cleanup(struct net_device *dev); 669 struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 670 struct ipoib_neigh *neigh); 671 void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx); 672 void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 673 unsigned int mtu); 674 void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc); 675 void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc); 676 #else 677 678 struct ipoib_cm_tx; 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 int 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 int ipoib_register_debugfs(void) { return 0; } 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 extern const char ipoib_driver_version[]; 843 844 #endif /* _IPOIB_H */ 845