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 57enum ipoib_flush_level { 58 IPOIB_FLUSH_LIGHT, 59 IPOIB_FLUSH_NORMAL, 60 IPOIB_FLUSH_HEAVY 61}; 62 63enum { 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 131struct ipoib_header { 132 __be16 proto; 133 u16 reserved; 134}; 135 136struct ipoib_pseudo_header { 137 u8 hwaddr[INFINIBAND_ALEN]; 138}; 139 140static 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 153static 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) */ 161struct 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 184struct ipoib_rx_buf { 185 struct sk_buff *skb; 186 u64 mapping[IPOIB_UD_RX_SG]; 187}; 188 189struct ipoib_tx_buf { 190 struct sk_buff *skb; 191 u64 mapping[MAX_SKB_FRAGS + 1]; 192}; 193 194struct ib_cm_id; 195 196struct 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 228enum 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 234struct 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 245struct 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 259struct ipoib_cm_rx_buf { 260 struct sk_buff *skb; 261 u64 mapping[IPOIB_CM_RX_SG]; 262}; 263 264struct 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 289struct ipoib_ethtool_st { 290 u16 coalesce_usecs; 291 u16 max_coalesced_frames; 292}; 293 294struct ipoib_neigh_table; 295 296struct 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 304struct ipoib_neigh_table { 305 struct ipoib_neigh_hash __rcu *htbl; 306 atomic_t entries; 307 struct completion flushed; 308 struct completion deleted; 309}; 310 311struct 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 */ 321struct 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 reschedule_napi_work; 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 work_struct tx_timeout_work; 360 struct delayed_work ah_reap_task; 361 struct delayed_work neigh_reap_task; 362 struct ib_device *ca; 363 u8 port; 364 u16 pkey; 365 u16 pkey_index; 366 struct ib_pd *pd; 367 struct ib_cq *recv_cq; 368 struct ib_cq *send_cq; 369 struct ib_qp *qp; 370 u32 qkey; 371 372 union ib_gid local_gid; 373 u32 local_lid; 374 375 unsigned int admin_mtu; 376 unsigned int mcast_mtu; 377 unsigned int max_ib_mtu; 378 379 struct ipoib_rx_buf *rx_ring; 380 381 struct ipoib_tx_buf *tx_ring; 382 /* cyclic ring variables for managing tx_ring, for UD only */ 383 unsigned int tx_head; 384 unsigned int tx_tail; 385 /* cyclic ring variables for counting overall outstanding send WRs */ 386 unsigned int global_tx_head; 387 unsigned int global_tx_tail; 388 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; 389 struct ib_ud_wr tx_wr; 390 struct ib_wc send_wc[MAX_SEND_CQE]; 391 392 struct ib_recv_wr rx_wr; 393 struct ib_sge rx_sge[IPOIB_UD_RX_SG]; 394 395 struct ib_wc ibwc[IPOIB_NUM_WC]; 396 397 struct list_head dead_ahs; 398 399 struct ib_event_handler event_handler; 400 401 struct net_device *parent; 402 struct list_head child_intfs; 403 struct list_head list; 404 int child_type; 405 406#ifdef CONFIG_INFINIBAND_IPOIB_CM 407 struct ipoib_cm_dev_priv cm; 408#endif 409 410#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 411 struct list_head fs_list; 412 struct dentry *mcg_dentry; 413 struct dentry *path_dentry; 414#endif 415 u64 hca_caps; 416 u64 kernel_caps; 417 struct ipoib_ethtool_st ethtool; 418 unsigned int max_send_sge; 419 const struct net_device_ops *rn_ops; 420}; 421 422struct ipoib_ah { 423 struct net_device *dev; 424 struct ib_ah *ah; 425 struct list_head list; 426 struct kref ref; 427 unsigned int last_send; 428 int valid; 429}; 430 431struct ipoib_path { 432 struct net_device *dev; 433 struct sa_path_rec pathrec; 434 struct ipoib_ah *ah; 435 struct sk_buff_head queue; 436 437 struct list_head neigh_list; 438 439 int query_id; 440 struct ib_sa_query *query; 441 struct completion done; 442 443 struct rb_node rb_node; 444 struct list_head list; 445}; 446 447struct ipoib_neigh { 448 struct ipoib_ah *ah; 449#ifdef CONFIG_INFINIBAND_IPOIB_CM 450 struct ipoib_cm_tx *cm; 451#endif 452 u8 daddr[INFINIBAND_ALEN]; 453 struct sk_buff_head queue; 454 455 struct net_device *dev; 456 457 struct list_head list; 458 struct ipoib_neigh __rcu *hnext; 459 struct rcu_head rcu; 460 refcount_t refcnt; 461 unsigned long alive; 462}; 463 464#define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN) 465#define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES) 466 467void ipoib_neigh_dtor(struct ipoib_neigh *neigh); 468static inline void ipoib_neigh_put(struct ipoib_neigh *neigh) 469{ 470 if (refcount_dec_and_test(&neigh->refcnt)) 471 ipoib_neigh_dtor(neigh); 472} 473struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr); 474struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr, 475 struct net_device *dev); 476void ipoib_neigh_free(struct ipoib_neigh *neigh); 477void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid); 478 479extern struct workqueue_struct *ipoib_workqueue; 480 481/* functions */ 482 483int ipoib_rx_poll(struct napi_struct *napi, int budget); 484int ipoib_tx_poll(struct napi_struct *napi, int budget); 485void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr); 486void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr); 487 488struct ipoib_ah *ipoib_create_ah(struct net_device *dev, 489 struct ib_pd *pd, struct rdma_ah_attr *attr); 490void ipoib_free_ah(struct kref *kref); 491static inline void ipoib_put_ah(struct ipoib_ah *ah) 492{ 493 kref_put(&ah->ref, ipoib_free_ah); 494} 495int ipoib_open(struct net_device *dev); 496void ipoib_intf_free(struct net_device *dev); 497int ipoib_add_pkey_attr(struct net_device *dev); 498int ipoib_add_umcast_attr(struct net_device *dev); 499 500int ipoib_send(struct net_device *dev, struct sk_buff *skb, 501 struct ib_ah *address, u32 dqpn); 502void ipoib_reap_ah(struct work_struct *work); 503 504void ipoib_napi_schedule_work(struct work_struct *work); 505struct ipoib_path *__path_find(struct net_device *dev, void *gid); 506void ipoib_mark_paths_invalid(struct net_device *dev); 507void ipoib_flush_paths(struct net_device *dev); 508struct net_device *ipoib_intf_alloc(struct ib_device *hca, u32 port, 509 const char *format); 510int ipoib_intf_init(struct ib_device *hca, u32 port, const char *format, 511 struct net_device *dev); 512void ipoib_ib_tx_timer_func(struct timer_list *t); 513void ipoib_ib_dev_flush_light(struct work_struct *work); 514void ipoib_ib_dev_flush_normal(struct work_struct *work); 515void ipoib_ib_dev_flush_heavy(struct work_struct *work); 516void ipoib_ib_tx_timeout_work(struct work_struct *work); 517void ipoib_pkey_event(struct work_struct *work); 518void ipoib_ib_dev_cleanup(struct net_device *dev); 519 520int ipoib_ib_dev_open_default(struct net_device *dev); 521int ipoib_ib_dev_open(struct net_device *dev); 522void ipoib_ib_dev_stop(struct net_device *dev); 523void ipoib_ib_dev_up(struct net_device *dev); 524void ipoib_ib_dev_down(struct net_device *dev); 525int ipoib_ib_dev_stop_default(struct net_device *dev); 526void ipoib_pkey_dev_check_presence(struct net_device *dev); 527 528void ipoib_mcast_join_task(struct work_struct *work); 529void ipoib_mcast_carrier_on_task(struct work_struct *work); 530void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb); 531 532void ipoib_mcast_restart_task(struct work_struct *work); 533void ipoib_mcast_start_thread(struct net_device *dev); 534void ipoib_mcast_stop_thread(struct net_device *dev); 535 536void ipoib_mcast_dev_down(struct net_device *dev); 537void ipoib_mcast_dev_flush(struct net_device *dev); 538 539int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req); 540void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv, 541 struct ipoib_tx_buf *tx_req); 542 543struct rtnl_link_ops *ipoib_get_link_ops(void); 544 545static inline void ipoib_build_sge(struct ipoib_dev_priv *priv, 546 struct ipoib_tx_buf *tx_req) 547{ 548 int i, off; 549 struct sk_buff *skb = tx_req->skb; 550 skb_frag_t *frags = skb_shinfo(skb)->frags; 551 int nr_frags = skb_shinfo(skb)->nr_frags; 552 u64 *mapping = tx_req->mapping; 553 554 if (skb_headlen(skb)) { 555 priv->tx_sge[0].addr = mapping[0]; 556 priv->tx_sge[0].length = skb_headlen(skb); 557 off = 1; 558 } else 559 off = 0; 560 561 for (i = 0; i < nr_frags; ++i) { 562 priv->tx_sge[i + off].addr = mapping[i + off]; 563 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]); 564 } 565 priv->tx_wr.wr.num_sge = nr_frags + off; 566} 567 568#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 569struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); 570int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); 571void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, 572 union ib_gid *gid, 573 unsigned long *created, 574 unsigned int *queuelen, 575 unsigned int *complete, 576 unsigned int *send_only); 577 578struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); 579int ipoib_path_iter_next(struct ipoib_path_iter *iter); 580void ipoib_path_iter_read(struct ipoib_path_iter *iter, 581 struct ipoib_path *path); 582#endif 583 584int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca, 585 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey); 586int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca, 587 union ib_gid *mgid, u16 mlid); 588void ipoib_mcast_remove_list(struct list_head *remove_list); 589void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid, 590 struct list_head *remove_list); 591 592int ipoib_init_qp(struct net_device *dev); 593int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); 594void ipoib_transport_dev_cleanup(struct net_device *dev); 595 596void ipoib_event(struct ib_event_handler *handler, 597 struct ib_event *record); 598 599int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); 600int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); 601 602int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, 603 u16 pkey, int child_type); 604 605int __init ipoib_netlink_init(void); 606void __exit ipoib_netlink_fini(void); 607 608void ipoib_set_umcast(struct net_device *ndev, int umcast_val); 609int ipoib_set_mode(struct net_device *dev, const char *buf); 610 611void ipoib_setup_common(struct net_device *dev); 612 613void ipoib_pkey_open(struct ipoib_dev_priv *priv); 614void ipoib_drain_cq(struct net_device *dev); 615 616void ipoib_set_ethtool_ops(struct net_device *dev); 617 618#define IPOIB_FLAGS_RC 0x80 619#define IPOIB_FLAGS_UC 0x40 620 621/* We don't support UC connections at the moment */ 622#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC)) 623 624#ifdef CONFIG_INFINIBAND_IPOIB_CM 625 626extern int ipoib_max_conn_qp; 627 628static inline int ipoib_cm_admin_enabled(struct net_device *dev) 629{ 630 struct ipoib_dev_priv *priv = ipoib_priv(dev); 631 return IPOIB_CM_SUPPORTED(dev->dev_addr) && 632 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 633} 634 635static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 636{ 637 struct ipoib_dev_priv *priv = ipoib_priv(dev); 638 return IPOIB_CM_SUPPORTED(hwaddr) && 639 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 640} 641 642static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 643 644{ 645 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags); 646} 647 648static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 649{ 650 return neigh->cm; 651} 652 653static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 654{ 655 neigh->cm = tx; 656} 657 658static inline int ipoib_cm_has_srq(struct net_device *dev) 659{ 660 struct ipoib_dev_priv *priv = ipoib_priv(dev); 661 return !!priv->cm.srq; 662} 663 664static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 665{ 666 struct ipoib_dev_priv *priv = ipoib_priv(dev); 667 return priv->cm.max_cm_mtu; 668} 669 670void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx); 671int ipoib_cm_dev_open(struct net_device *dev); 672void ipoib_cm_dev_stop(struct net_device *dev); 673int ipoib_cm_dev_init(struct net_device *dev); 674int ipoib_cm_add_mode_attr(struct net_device *dev); 675void ipoib_cm_dev_cleanup(struct net_device *dev); 676struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 677 struct ipoib_neigh *neigh); 678void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx); 679void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 680 unsigned int mtu); 681void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc); 682void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc); 683#else 684 685#define ipoib_max_conn_qp 0 686 687static inline int ipoib_cm_admin_enabled(struct net_device *dev) 688{ 689 return 0; 690} 691static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr) 692 693{ 694 return 0; 695} 696 697static inline int ipoib_cm_up(struct ipoib_neigh *neigh) 698 699{ 700 return 0; 701} 702 703static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh) 704{ 705 return NULL; 706} 707 708static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx) 709{ 710} 711 712static inline int ipoib_cm_has_srq(struct net_device *dev) 713{ 714 return 0; 715} 716 717static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev) 718{ 719 return 0; 720} 721 722static inline 723void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx) 724{ 725 return; 726} 727 728static inline 729int ipoib_cm_dev_open(struct net_device *dev) 730{ 731 return 0; 732} 733 734static inline 735void ipoib_cm_dev_stop(struct net_device *dev) 736{ 737 return; 738} 739 740static inline 741int ipoib_cm_dev_init(struct net_device *dev) 742{ 743 return -EOPNOTSUPP; 744} 745 746static inline 747void ipoib_cm_dev_cleanup(struct net_device *dev) 748{ 749 return; 750} 751 752static inline 753struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path, 754 struct ipoib_neigh *neigh) 755{ 756 return NULL; 757} 758 759static inline 760void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx) 761{ 762 return; 763} 764 765static inline 766int ipoib_cm_add_mode_attr(struct net_device *dev) 767{ 768 return 0; 769} 770 771static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb, 772 unsigned int mtu) 773{ 774 dev_kfree_skb_any(skb); 775} 776 777static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) 778{ 779} 780 781static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) 782{ 783} 784#endif 785 786#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 787void ipoib_create_debug_files(struct net_device *dev); 788void ipoib_delete_debug_files(struct net_device *dev); 789void ipoib_register_debugfs(void); 790void ipoib_unregister_debugfs(void); 791#else 792static inline void ipoib_create_debug_files(struct net_device *dev) { } 793static inline void ipoib_delete_debug_files(struct net_device *dev) { } 794static inline void ipoib_register_debugfs(void) { } 795static inline void ipoib_unregister_debugfs(void) { } 796#endif 797 798#define ipoib_printk(level, priv, format, arg...) \ 799 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) 800#define ipoib_warn(priv, format, arg...) \ 801do { \ 802 static DEFINE_RATELIMIT_STATE(_rs, \ 803 10 * HZ /*10 seconds */, \ 804 100); \ 805 if (__ratelimit(&_rs)) \ 806 ipoib_printk(KERN_WARNING, priv, format , ## arg);\ 807} while (0) 808 809extern int ipoib_sendq_size; 810extern int ipoib_recvq_size; 811 812extern struct ib_sa_client ipoib_sa_client; 813 814#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG 815extern int ipoib_debug_level; 816 817#define ipoib_dbg(priv, format, arg...) \ 818 do { \ 819 if (ipoib_debug_level > 0) \ 820 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 821 } while (0) 822#define ipoib_dbg_mcast(priv, format, arg...) \ 823 do { \ 824 if (mcast_debug_level > 0) \ 825 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 826 } while (0) 827#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 828#define ipoib_dbg(priv, format, arg...) \ 829 do { (void) (priv); } while (0) 830#define ipoib_dbg_mcast(priv, format, arg...) \ 831 do { (void) (priv); } while (0) 832#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ 833 834#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA 835#define ipoib_dbg_data(priv, format, arg...) \ 836 do { \ 837 if (data_debug_level > 0) \ 838 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ 839 } while (0) 840#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 841#define ipoib_dbg_data(priv, format, arg...) \ 842 do { (void) (priv); } while (0) 843#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ 844 845#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff) 846 847#endif /* _IPOIB_H */ 848