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Merge remote-tracking branch 'asoc/topic/core' into asoc-next
[linux-2.6-block.git] / drivers / infiniband / ulp / ipoib / ipoib.h
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
2a1d9b7f
RD		 3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
1da177e4
LT		 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.
1da177e4
LT		 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>
1da177e4
LT		 42#include <linux/kref.h>
43#include <linux/if_infiniband.h>
95ed644f 44#include <linux/mutex.h>
1da177e4
LT		 45
46#include <net/neighbour.h>
936d7de3 47#include <net/sch_generic.h>
1da177e4 48
60063497 49#include <linux/atomic.h>
1da177e4 50
a4d61e84
RD		 51#include <rdma/ib_verbs.h>
52#include <rdma/ib_pack.h>
53#include <rdma/ib_sa.h>
19e364f6 54#include <linux/sched.h>
1da177e4
LT		 55
56/* constants */
57
ee1e2c82
MS		 58enum ipoib_flush_level {
59 IPOIB_FLUSH_LIGHT,
60 IPOIB_FLUSH_NORMAL,
61 IPOIB_FLUSH_HEAVY
62};
63
1da177e4 64enum {
2337f809 65 IPOIB_ENCAP_LEN = 4,
1da177e4 66
bc7b3a36
SM		 67 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
68 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */
69
2337f809
RD		 70 IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */
71 IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN,
72 IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
73 IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
bc3a290b
EC		 74 IPOIB_RX_RING_SIZE = 256,
75 IPOIB_TX_RING_SIZE = 128,
0f485251
SM		 76 IPOIB_MAX_QUEUE_SIZE = 8192,
77 IPOIB_MIN_QUEUE_SIZE = 2,
68e995a2 78 IPOIB_CM_MAX_CONN_QP = 4096,
1da177e4 79
2337f809 80 IPOIB_NUM_WC = 4,
1da177e4
LT		 81
82 IPOIB_MAX_PATH_REC_QUEUE = 3,
2337f809
RD		 83 IPOIB_MAX_MCAST_QUEUE = 3,
84
85 IPOIB_FLAG_OPER_UP = 0,
86 IPOIB_FLAG_INITIALIZED = 1,
87 IPOIB_FLAG_ADMIN_UP = 2,
88 IPOIB_PKEY_ASSIGNED = 3,
2337f809 89 IPOIB_FLAG_SUBINTERFACE = 5,
2337f809 90 IPOIB_STOP_REAPER = 7,
2337f809 91 IPOIB_FLAG_ADMIN_CM = 9,
1b524963 92 IPOIB_FLAG_UMCAST = 10,
b63b70d8
SP		 93 IPOIB_STOP_NEIGH_GC = 11,
94 IPOIB_NEIGH_TBL_FLUSH = 12,
1da177e4
LT		 95
96 IPOIB_MAX_BACKOFF_SECONDS = 16,
97
2337f809 98 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
1da177e4 99 IPOIB_MCAST_FLAG_SENDONLY = 1,
69911416
DL		 100 /*
101 * For IPOIB_MCAST_FLAG_BUSY
102 * When set, in flight join and mcast->mc is unreliable
103 * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or
104 * haven't started yet
105 * When clear and mcast->mc is valid pointer, join was successful
106 */
107 IPOIB_MCAST_FLAG_BUSY = 2,
1da177e4 108 IPOIB_MCAST_FLAG_ATTACHED = 3,
f56bcd80
EC		 109
110 MAX_SEND_CQE = 16,
f89271da 111 IPOIB_CM_COPYBREAK = 256,
9baa0b03
OG		 112
113 IPOIB_NON_CHILD = 0,
114 IPOIB_LEGACY_CHILD = 1,
115 IPOIB_RTNL_CHILD = 2,
1da177e4
LT		 116};
117
839fcaba
MT		 118#define IPOIB_OP_RECV (1ul << 31)
119#ifdef CONFIG_INFINIBAND_IPOIB_CM
1b524963 120#define IPOIB_OP_CM (1ul << 30)
839fcaba 121#else
1b524963 122#define IPOIB_OP_CM (0)
839fcaba
MT		 123#endif
124
9d1ad66e
SP		 125#define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
126
1da177e4
LT		 127/* structs */
128
129struct ipoib_header {
97f52eb4
SH		 130 __be16 proto;
131 u16 reserved;
1da177e4
LT		 132};
133
936d7de3
RD		 134struct ipoib_cb {
135 struct qdisc_skb_cb qdisc_cb;
136 u8 hwaddr[INFINIBAND_ALEN];
1da177e4
LT		 137};
138
b49fe362
ED		 139static inline struct ipoib_cb *ipoib_skb_cb(const struct sk_buff *skb)
140{
141 BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct ipoib_cb));
142 return (struct ipoib_cb *)skb->cb;
143}
144
81668838
SH		 145/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
146struct ipoib_mcast {
147 struct ib_sa_mcmember_rec mcmember;
148 struct ib_sa_multicast *mc;
2337f809 149 struct ipoib_ah *ah;
81668838
SH		 150
151 struct rb_node rb_node;
152 struct list_head list;
153
154 unsigned long created;
155 unsigned long backoff;
69911416 156 unsigned long delay_until;
81668838
SH		 157
158 unsigned long flags;
159 unsigned char logcount;
160
161 struct list_head neigh_list;
162
163 struct sk_buff_head pkt_queue;
164
165 struct net_device *dev;
a9c8ba58 166 struct completion done;
81668838 167};
1da177e4 168
1993d683
RD		 169struct ipoib_rx_buf {
170 struct sk_buff *skb;
bc7b3a36 171 u64 mapping[IPOIB_UD_RX_SG];
1993d683
RD		 172};
173
174struct ipoib_tx_buf {
1da177e4 175 struct sk_buff *skb;
7143740d 176 u64 mapping[MAX_SKB_FRAGS + 1];
1da177e4
LT		 177};
178
e112373f
EC		 179struct ipoib_cm_tx_buf {
180 struct sk_buff *skb;
181 u64 mapping;
182};
183
839fcaba
MT		 184struct ib_cm_id;
185
186struct ipoib_cm_data {
187 __be32 qpn; /* High byte MUST be ignored on receive */
188 __be32 mtu;
189};
190
518b1646
MT		 191/*
192 * Quoting 10.3.1 Queue Pair and EE Context States:
193 *
194 * Note, for QPs that are associated with an SRQ, the Consumer should take the
195 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
196 * Reset State. The Consumer may invoke the Destroy QP without first performing
197 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
198 * Last WQE Reached Event. However, if the Consumer does not wait for the
199 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
200 * leakage may occur. Therefore, it is good programming practice to tear down a
201 * QP that is associated with an SRQ by using the following process:
202 *
203 * - Put the QP in the Error State
204 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
205 * - either:
206 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
207 * to be empty or the number of Poll CQ operations has exceeded
208 * CQ capacity size;
209 * - or
210 * post another WR that completes on the same CQ and wait for this
211 * WR to return as a WC;
212 * - and then invoke a Destroy QP or Reset QP.
213 *
214 * We use the second option and wait for a completion on the
ec56dc0b 215 * same CQ before destroying QPs attached to our SRQ.
518b1646
MT		 216 */
217
218enum ipoib_cm_state {
219 IPOIB_CM_RX_LIVE,
220 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
221 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
222};
223
839fcaba 224struct ipoib_cm_rx {
2337f809
RD		 225 struct ib_cm_id *id;
226 struct ib_qp *qp;
68e995a2 227 struct ipoib_cm_rx_buf *rx_ring;
2337f809
RD		 228 struct list_head list;
229 struct net_device *dev;
230 unsigned long jiffies;
231 enum ipoib_cm_state state;
68e995a2 232 int recv_count;
839fcaba
MT		 233};
234
235struct ipoib_cm_tx {
2337f809
RD		 236 struct ib_cm_id *id;
237 struct ib_qp *qp;
839fcaba
MT		 238 struct list_head list;
239 struct net_device *dev;
240 struct ipoib_neigh *neigh;
241 struct ipoib_path *path;
c4268778 242 struct ipoib_tx_buf *tx_ring;
2337f809
RD		 243 unsigned tx_head;
244 unsigned tx_tail;
245 unsigned long flags;
246 u32 mtu;
839fcaba
MT		 247};
248
249struct ipoib_cm_rx_buf {
250 struct sk_buff *skb;
251 u64 mapping[IPOIB_CM_RX_SG];
252};
253
254struct ipoib_cm_dev_priv {
2337f809 255 struct ib_srq *srq;
839fcaba 256 struct ipoib_cm_rx_buf *srq_ring;
2337f809
RD		 257 struct ib_cm_id *id;
258 struct list_head passive_ids; /* state: LIVE */
259 struct list_head rx_error_list; /* state: ERROR */
260 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
261 struct list_head rx_drain_list; /* state: FLUSH, drain started */
262 struct list_head rx_reap_list; /* state: FLUSH, drain done */
839fcaba
MT		 263 struct work_struct start_task;
264 struct work_struct reap_task;
265 struct work_struct skb_task;
518b1646 266 struct work_struct rx_reap_task;
839fcaba
MT		 267 struct delayed_work stale_task;
268 struct sk_buff_head skb_queue;
2337f809
RD		 269 struct list_head start_list;
270 struct list_head reap_list;
271 struct ib_wc ibwc[IPOIB_NUM_WC];
272 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
839fcaba 273 struct ib_recv_wr rx_wr;
68e995a2 274 int nonsrq_conn_qp;
586a6934
PS		 275 int max_cm_mtu;
276 int num_frags;
839fcaba
MT		 277};
278
28d52b3c
EC		 279struct ipoib_ethtool_st {
280 u16 coalesce_usecs;
281 u16 max_coalesced_frames;
282};
283
66172c09
SP		 284struct ipoib_neigh_table;
285
b63b70d8 286struct ipoib_neigh_hash {
66172c09 287 struct ipoib_neigh_table *ntbl;
b63b70d8
SP		 288 struct ipoib_neigh __rcu **buckets;
289 struct rcu_head rcu;
290 u32 mask;
291 u32 size;
292};
293
294struct ipoib_neigh_table {
295 struct ipoib_neigh_hash __rcu *htbl;
b63b70d8
SP		 296 atomic_t entries;
297 struct completion flushed;
66172c09 298 struct completion deleted;
b63b70d8
SP		 299};
300
2c010730
ES		 301struct ipoib_qp_state_validate {
302 struct work_struct work;
303 struct ipoib_dev_priv *priv;
304};
305
1da177e4 306/*
943c246e
RD		 307 * Device private locking: network stack tx_lock protects members used
308 * in TX fast path, lock protects everything else. lock nests inside
309 * of tx_lock (ie tx_lock must be acquired first if needed).
1da177e4
LT		 310 */
311struct ipoib_dev_priv {
312 spinlock_t lock;
313
314 struct net_device *dev;
315
bea3348e
SH		 316 struct napi_struct napi;
317
1da177e4
LT		 318 unsigned long flags;
319
f47944cc 320 struct rw_semaphore vlan_rwsem;
1da177e4
LT		 321
322 struct rb_root path_tree;
323 struct list_head path_list;
324
b63b70d8
SP		 325 struct ipoib_neigh_table ntbl;
326
1da177e4
LT		 327 struct ipoib_mcast *broadcast;
328 struct list_head multicast_list;
329 struct rb_root multicast_tree;
330
0b39578b 331 struct workqueue_struct *wq;
c4028958 332 struct delayed_work mcast_task;
e8224e4b 333 struct work_struct carrier_on_task;
ee1e2c82
MS		 334 struct work_struct flush_light;
335 struct work_struct flush_normal;
336 struct work_struct flush_heavy;
1da177e4 337 struct work_struct restart_task;
c4028958 338 struct delayed_work ah_reap_task;
b63b70d8 339 struct delayed_work neigh_reap_task;
1da177e4 340 struct ib_device *ca;
2337f809
RD		 341 u8 port;
342 u16 pkey;
343 u16 pkey_index;
344 struct ib_pd *pd;
345 struct ib_mr *mr;
f56bcd80
EC		 346 struct ib_cq *recv_cq;
347 struct ib_cq *send_cq;
2337f809
RD		 348 struct ib_qp *qp;
349 u32 qkey;
1da177e4
LT		 350
351 union ib_gid local_gid;
2337f809 352 u16 local_lid;
1da177e4
LT		 353
354 unsigned int admin_mtu;
355 unsigned int mcast_mtu;
bc7b3a36 356 unsigned int max_ib_mtu;
1da177e4 357
1993d683 358 struct ipoib_rx_buf *rx_ring;
1da177e4 359
1993d683 360 struct ipoib_tx_buf *tx_ring;
2337f809
RD		 361 unsigned tx_head;
362 unsigned tx_tail;
7143740d 363 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
1993d683 364 struct ib_send_wr tx_wr;
2337f809 365 unsigned tx_outstanding;
f56bcd80 366 struct ib_wc send_wc[MAX_SEND_CQE];
1da177e4 367
bc7b3a36
SM		 368 struct ib_recv_wr rx_wr;
369 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
370
1da177e4
LT		 371 struct ib_wc ibwc[IPOIB_NUM_WC];
372
373 struct list_head dead_ahs;
374
375 struct ib_event_handler event_handler;
376
1da177e4
LT		 377 struct net_device *parent;
378 struct list_head child_intfs;
379 struct list_head list;
9baa0b03 380 int child_type;
1da177e4 381
839fcaba
MT		 382#ifdef CONFIG_INFINIBAND_IPOIB_CM
383 struct ipoib_cm_dev_priv cm;
384#endif
385
1da177e4
LT		 386#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
387 struct list_head fs_list;
388 struct dentry *mcg_dentry;
1732b0ef 389 struct dentry *path_dentry;
1da177e4 390#endif
40ca1988 391 int hca_caps;
28d52b3c 392 struct ipoib_ethtool_st ethtool;
57ce41d1 393 struct timer_list poll_timer;
1da177e4
LT		 394};
395
396struct ipoib_ah {
397 struct net_device *dev;
2337f809 398 struct ib_ah *ah;
1da177e4 399 struct list_head list;
2337f809
RD		 400 struct kref ref;
401 unsigned last_send;
1da177e4
LT		 402};
403
404struct ipoib_path {
405 struct net_device *dev;
406 struct ib_sa_path_rec pathrec;
407 struct ipoib_ah *ah;
408 struct sk_buff_head queue;
409
410 struct list_head neigh_list;
411
2337f809 412 int query_id;
1da177e4
LT		 413 struct ib_sa_query *query;
414 struct completion done;
415
2337f809 416 struct rb_node rb_node;
1da177e4 417 struct list_head list;
ee1e2c82 418 int valid;
1da177e4
LT		 419};
420
421struct ipoib_neigh {
422 struct ipoib_ah *ah;
839fcaba
MT		 423#ifdef CONFIG_INFINIBAND_IPOIB_CM
424 struct ipoib_cm_tx *cm;
425#endif
b63b70d8 426 u8 daddr[INFINIBAND_ALEN];
1da177e4
LT		 427 struct sk_buff_head queue;
428
732a2170 429 struct net_device *dev;
1da177e4
LT		 430
431 struct list_head list;
b63b70d8
SP		 432 struct ipoib_neigh __rcu *hnext;
433 struct rcu_head rcu;
434 atomic_t refcnt;
435 unsigned long alive;
1da177e4
LT		 436};
437
bc7b3a36
SM		 438#define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
439#define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
440
b63b70d8
SP		 441void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
442static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
1da177e4 443{
b63b70d8
SP		 444 if (atomic_dec_and_test(&neigh->refcnt))
445 ipoib_neigh_dtor(neigh);
1da177e4 446}
b63b70d8
SP		 447struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
448struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
732a2170 449 struct net_device *dev);
b63b70d8
SP		 450void ipoib_neigh_free(struct ipoib_neigh *neigh);
451void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
d2e0655e 452
1da177e4
LT		 453extern struct workqueue_struct *ipoib_workqueue;
454
455/* functions */
456
bea3348e 457int ipoib_poll(struct napi_struct *napi, int budget);
1da177e4 458void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
57ce41d1 459void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
1da177e4
LT		 460
461struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
462 struct ib_pd *pd, struct ib_ah_attr *attr);
463void ipoib_free_ah(struct kref *kref);
464static inline void ipoib_put_ah(struct ipoib_ah *ah)
465{
466 kref_put(&ah->ref, ipoib_free_ah);
467}
8ae5a8a2 468int ipoib_open(struct net_device *dev);
1da177e4 469int ipoib_add_pkey_attr(struct net_device *dev);
335a64a5 470int ipoib_add_umcast_attr(struct net_device *dev);
1da177e4
LT		 471
472void ipoib_send(struct net_device *dev, struct sk_buff *skb,
473 struct ipoib_ah *address, u32 qpn);
c4028958 474void ipoib_reap_ah(struct work_struct *work);
1da177e4 475
ee1e2c82 476void ipoib_mark_paths_invalid(struct net_device *dev);
1da177e4
LT		 477void ipoib_flush_paths(struct net_device *dev);
478struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
479
480int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
ee1e2c82
MS		 481void ipoib_ib_dev_flush_light(struct work_struct *work);
482void ipoib_ib_dev_flush_normal(struct work_struct *work);
483void ipoib_ib_dev_flush_heavy(struct work_struct *work);
26bbf13c 484void ipoib_pkey_event(struct work_struct *work);
1da177e4
LT		 485void ipoib_ib_dev_cleanup(struct net_device *dev);
486
efc82eee 487int ipoib_ib_dev_open(struct net_device *dev);
1da177e4 488int ipoib_ib_dev_up(struct net_device *dev);
efc82eee
DL		 489int ipoib_ib_dev_down(struct net_device *dev);
490int ipoib_ib_dev_stop(struct net_device *dev);
db84f880 491void ipoib_pkey_dev_check_presence(struct net_device *dev);
1da177e4
LT		 492
493int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
494void ipoib_dev_cleanup(struct net_device *dev);
495
c4028958 496void ipoib_mcast_join_task(struct work_struct *work);
e8224e4b 497void ipoib_mcast_carrier_on_task(struct work_struct *work);
b63b70d8 498void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
1da177e4 499
c4028958 500void ipoib_mcast_restart_task(struct work_struct *work);
1da177e4 501int ipoib_mcast_start_thread(struct net_device *dev);
efc82eee 502int ipoib_mcast_stop_thread(struct net_device *dev);
1da177e4
LT		 503
504void ipoib_mcast_dev_down(struct net_device *dev);
505void ipoib_mcast_dev_flush(struct net_device *dev);
506
c4268778
YS		 507int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
508void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
509 struct ipoib_tx_buf *tx_req);
510
511static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
512 struct ipoib_tx_buf *tx_req)
513{
514 int i, off;
515 struct sk_buff *skb = tx_req->skb;
516 skb_frag_t *frags = skb_shinfo(skb)->frags;
517 int nr_frags = skb_shinfo(skb)->nr_frags;
518 u64 *mapping = tx_req->mapping;
519
520 if (skb_headlen(skb)) {
521 priv->tx_sge[0].addr = mapping[0];
522 priv->tx_sge[0].length = skb_headlen(skb);
523 off = 1;
524 } else
525 off = 0;
526
527 for (i = 0; i < nr_frags; ++i) {
528 priv->tx_sge[i + off].addr = mapping[i + off];
529 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
530 }
531 priv->tx_wr.num_sge = nr_frags + off;
532}
533
8ae5a8a2 534#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1da177e4 535struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
1da177e4
LT		 536int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
537void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
538 union ib_gid *gid,
539 unsigned long *created,
540 unsigned int *queuelen,
541 unsigned int *complete,
542 unsigned int *send_only);
1732b0ef
RD		 543
544struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
545int ipoib_path_iter_next(struct ipoib_path_iter *iter);
546void ipoib_path_iter_read(struct ipoib_path_iter *iter,
547 struct ipoib_path *path);
8ae5a8a2 548#endif
1da177e4
LT		 549
550int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
d0de1362 551 union ib_gid *mgid, int set_qkey);
1da177e4 552
5b6810e0 553int ipoib_init_qp(struct net_device *dev);
1da177e4
LT		 554int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
555void ipoib_transport_dev_cleanup(struct net_device *dev);
556
557void ipoib_event(struct ib_event_handler *handler,
558 struct ib_event *record);
559
560int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
561int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
562
9baa0b03
OG		 563int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
564 u16 pkey, int child_type);
565
566int __init ipoib_netlink_init(void);
567void __exit ipoib_netlink_fini(void);
568
862096a8
OG		 569void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
570int ipoib_set_mode(struct net_device *dev, const char *buf);
571
9baa0b03
OG		 572void ipoib_setup(struct net_device *dev);
573
db84f880 574void ipoib_pkey_open(struct ipoib_dev_priv *priv);
2dfbfc37 575void ipoib_drain_cq(struct net_device *dev);
1da177e4 576
82c24c18 577void ipoib_set_ethtool_ops(struct net_device *dev);
83bb63f6 578int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
82c24c18 579
2337f809
RD		 580#define IPOIB_FLAGS_RC 0x80
581#define IPOIB_FLAGS_UC 0x40
839fcaba
MT		 582
583/* We don't support UC connections at the moment */
584#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
585
71d9c5f9
RD		 586#ifdef CONFIG_INFINIBAND_IPOIB_CM
587
68e995a2
PS		 588extern int ipoib_max_conn_qp;
589
839fcaba
MT		 590static inline int ipoib_cm_admin_enabled(struct net_device *dev)
591{
592 struct ipoib_dev_priv *priv = netdev_priv(dev);
593 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
594 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
595}
596
b63b70d8 597static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
839fcaba
MT		 598{
599 struct ipoib_dev_priv *priv = netdev_priv(dev);
b63b70d8 600 return IPOIB_CM_SUPPORTED(hwaddr) &&
839fcaba
MT		 601 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
602}
603
604static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
605
606{
607 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
608}
609
610static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
611{
612 return neigh->cm;
613}
614
615static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
616{
617 neigh->cm = tx;
618}
619
68e995a2
PS		 620static inline int ipoib_cm_has_srq(struct net_device *dev)
621{
622 struct ipoib_dev_priv *priv = netdev_priv(dev);
623 return !!priv->cm.srq;
624}
625
586a6934
PS		 626static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
627{
628 struct ipoib_dev_priv *priv = netdev_priv(dev);
629 return priv->cm.max_cm_mtu;
630}
631
839fcaba
MT		 632void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
633int ipoib_cm_dev_open(struct net_device *dev);
634void ipoib_cm_dev_stop(struct net_device *dev);
635int ipoib_cm_dev_init(struct net_device *dev);
636int ipoib_cm_add_mode_attr(struct net_device *dev);
637void ipoib_cm_dev_cleanup(struct net_device *dev);
638struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
639 struct ipoib_neigh *neigh);
640void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
2337f809 641void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 642 unsigned int mtu);
643void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
1b524963 644void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
839fcaba
MT		 645#else
646
647struct ipoib_cm_tx;
648
68e995a2
PS		 649#define ipoib_max_conn_qp 0
650
839fcaba
MT		 651static inline int ipoib_cm_admin_enabled(struct net_device *dev)
652{
653 return 0;
654}
b63b70d8 655static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
839fcaba
MT		 656
657{
658 return 0;
659}
660
661static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
662
663{
664 return 0;
665}
666
667static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
668{
669 return NULL;
670}
671
672static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
673{
674}
675
68e995a2
PS		 676static inline int ipoib_cm_has_srq(struct net_device *dev)
677{
678 return 0;
679}
680
586a6934
PS		 681static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
682{
683 return 0;
684}
685
839fcaba
MT		 686static inline
687void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
688{
689 return;
690}
691
692static inline
693int ipoib_cm_dev_open(struct net_device *dev)
694{
695 return 0;
696}
697
698static inline
699void ipoib_cm_dev_stop(struct net_device *dev)
700{
701 return;
702}
703
704static inline
705int ipoib_cm_dev_init(struct net_device *dev)
706{
707 return -ENOSYS;
708}
709
710static inline
711void ipoib_cm_dev_cleanup(struct net_device *dev)
712{
713 return;
714}
715
716static inline
717struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
718 struct ipoib_neigh *neigh)
719{
720 return NULL;
721}
722
723static inline
724void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
725{
726 return;
727}
728
729static inline
730int ipoib_cm_add_mode_attr(struct net_device *dev)
731{
732 return 0;
733}
734
2337f809 735static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 736 unsigned int mtu)
737{
738 dev_kfree_skb_any(skb);
739}
740
741static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
742{
743}
744
1b524963
MT		 745static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
746{
747}
839fcaba
MT		 748#endif
749
1da177e4 750#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1732b0ef
RD		 751void ipoib_create_debug_files(struct net_device *dev);
752void ipoib_delete_debug_files(struct net_device *dev);
1da177e4
LT		 753int ipoib_register_debugfs(void);
754void ipoib_unregister_debugfs(void);
755#else
1732b0ef
RD		 756static inline void ipoib_create_debug_files(struct net_device *dev) { }
757static inline void ipoib_delete_debug_files(struct net_device *dev) { }
1da177e4
LT		 758static inline int ipoib_register_debugfs(void) { return 0; }
759static inline void ipoib_unregister_debugfs(void) { }
760#endif
761
1da177e4
LT		 762#define ipoib_printk(level, priv, format, arg...) \
763 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
764#define ipoib_warn(priv, format, arg...) \
765 ipoib_printk(KERN_WARNING, priv, format , ## arg)
766
0f485251
SM		 767extern int ipoib_sendq_size;
768extern int ipoib_recvq_size;
1da177e4 769
c1a0b23b
MT		 770extern struct ib_sa_client ipoib_sa_client;
771
1da177e4
LT		 772#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
773extern int ipoib_debug_level;
774
775#define ipoib_dbg(priv, format, arg...) \
2337f809 776 do { \
1da177e4
LT		 777 if (ipoib_debug_level > 0) \
778 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
779 } while (0)
780#define ipoib_dbg_mcast(priv, format, arg...) \
2337f809 781 do { \
1da177e4
LT		 782 if (mcast_debug_level > 0) \
783 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
784 } while (0)
785#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
786#define ipoib_dbg(priv, format, arg...) \
787 do { (void) (priv); } while (0)
788#define ipoib_dbg_mcast(priv, format, arg...) \
789 do { (void) (priv); } while (0)
790#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
791
792#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
793#define ipoib_dbg_data(priv, format, arg...) \
2337f809 794 do { \
1da177e4
LT		 795 if (data_debug_level > 0) \
796 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
797 } while (0)
798#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
799#define ipoib_dbg_data(priv, format, arg...) \
800 do { (void) (priv); } while (0)
801#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
802
839fcaba
MT		 803#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
804
4b48680b
YB		 805extern const char ipoib_driver_version[];
806
1da177e4 807#endif /* _IPOIB_H */
Linux 6.x block layer and io_uring tree(s)