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Merge tag 'x86-fpu-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
[thirdparty/linux.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/* constants */
56
ee1e2c82
MS		 57enum ipoib_flush_level {
58 IPOIB_FLUSH_LIGHT,
59 IPOIB_FLUSH_NORMAL,
60 IPOIB_FLUSH_HEAVY
61};
62
1da177e4 63enum {
2337f809 64 IPOIB_ENCAP_LEN = 4,
fc791b63
PA		 65 IPOIB_PSEUDO_LEN = 20,
66 IPOIB_HARD_LEN = IPOIB_ENCAP_LEN + IPOIB_PSEUDO_LEN,
1da177e4 67
bc7b3a36
SM		 68 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
69 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */
70
2337f809
RD		 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,
bc3a290b
EC		 75 IPOIB_RX_RING_SIZE = 256,
76 IPOIB_TX_RING_SIZE = 128,
0f485251
SM		 77 IPOIB_MAX_QUEUE_SIZE = 8192,
78 IPOIB_MIN_QUEUE_SIZE = 2,
68e995a2 79 IPOIB_CM_MAX_CONN_QP = 4096,
1da177e4 80
2337f809 81 IPOIB_NUM_WC = 4,
1da177e4
LT		 82
83 IPOIB_MAX_PATH_REC_QUEUE = 3,
2866196f 84 IPOIB_MAX_MCAST_QUEUE = 64,
2337f809
RD		 85
86 IPOIB_FLAG_OPER_UP = 0,
87 IPOIB_FLAG_INITIALIZED = 1,
88 IPOIB_FLAG_ADMIN_UP = 2,
89 IPOIB_PKEY_ASSIGNED = 3,
2337f809 90 IPOIB_FLAG_SUBINTERFACE = 5,
2337f809 91 IPOIB_STOP_REAPER = 7,
2337f809 92 IPOIB_FLAG_ADMIN_CM = 9,
1b524963 93 IPOIB_FLAG_UMCAST = 10,
b63b70d8 94 IPOIB_NEIGH_TBL_FLUSH = 12,
492a7e67
MB		 95 IPOIB_FLAG_DEV_ADDR_SET = 13,
96 IPOIB_FLAG_DEV_ADDR_CTRL = 14,
1da177e4
LT		 97
98 IPOIB_MAX_BACKOFF_SECONDS = 16,
99
2337f809 100 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
1da177e4 101 IPOIB_MCAST_FLAG_SENDONLY = 1,
69911416
DL		 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,
1da177e4 110 IPOIB_MCAST_FLAG_ATTACHED = 3,
f56bcd80 111
b9595c5b 112 MAX_SEND_CQE = 64,
f89271da 113 IPOIB_CM_COPYBREAK = 256,
9baa0b03
OG		 114
115 IPOIB_NON_CHILD = 0,
116 IPOIB_LEGACY_CHILD = 1,
117 IPOIB_RTNL_CHILD = 2,
1da177e4
LT		 118};
119
839fcaba
MT		 120#define IPOIB_OP_RECV (1ul << 31)
121#ifdef CONFIG_INFINIBAND_IPOIB_CM
1b524963 122#define IPOIB_OP_CM (1ul << 30)
839fcaba 123#else
1b524963 124#define IPOIB_OP_CM (0)
839fcaba
MT		 125#endif
126
9d1ad66e
SP		 127#define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
128
1da177e4
LT		 129/* structs */
130
131struct ipoib_header {
97f52eb4
SH		 132 __be16 proto;
133 u16 reserved;
1da177e4
LT		 134};
135
fc791b63
PA		 136struct ipoib_pseudo_header {
137 u8 hwaddr[INFINIBAND_ALEN];
1da177e4
LT		 138};
139
fc791b63 140static inline void skb_add_pseudo_hdr(struct sk_buff *skb)
b49fe362 141{
fc791b63
PA		 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);
b49fe362
ED		 151}
152
cd565b4b
ES		 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}
c1048aff 159
81668838
SH		 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;
2337f809 164 struct ipoib_ah *ah;
81668838
SH		 165
166 struct rb_node rb_node;
167 struct list_head list;
168
169 unsigned long created;
170 unsigned long backoff;
69911416 171 unsigned long delay_until;
81668838
SH		 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;
a9c8ba58 181 struct completion done;
81668838 182};
1da177e4 183
1993d683
RD		 184struct ipoib_rx_buf {
185 struct sk_buff *skb;
bc7b3a36 186 u64 mapping[IPOIB_UD_RX_SG];
1993d683
RD		 187};
188
189struct ipoib_tx_buf {
1da177e4 190 struct sk_buff *skb;
7143740d 191 u64 mapping[MAX_SKB_FRAGS + 1];
1da177e4
LT		 192};
193
839fcaba
MT		 194struct ib_cm_id;
195
196struct ipoib_cm_data {
197 __be32 qpn; /* High byte MUST be ignored on receive */
198 __be32 mtu;
199};
200
518b1646
MT		 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
ec56dc0b 225 * same CQ before destroying QPs attached to our SRQ.
518b1646
MT		 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
839fcaba 234struct ipoib_cm_rx {
2337f809
RD		 235 struct ib_cm_id *id;
236 struct ib_qp *qp;
68e995a2 237 struct ipoib_cm_rx_buf *rx_ring;
2337f809
RD		 238 struct list_head list;
239 struct net_device *dev;
240 unsigned long jiffies;
241 enum ipoib_cm_state state;
68e995a2 242 int recv_count;
839fcaba
MT		 243};
244
245struct ipoib_cm_tx {
2337f809
RD		 246 struct ib_cm_id *id;
247 struct ib_qp *qp;
839fcaba
MT		 248 struct list_head list;
249 struct net_device *dev;
250 struct ipoib_neigh *neigh;
c4268778 251 struct ipoib_tx_buf *tx_ring;
0578cdad
KH		 252 unsigned int tx_head;
253 unsigned int tx_tail;
2337f809
RD		 254 unsigned long flags;
255 u32 mtu;
0578cdad 256 unsigned int max_send_sge;
839fcaba
MT		 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 {
2337f809 265 struct ib_srq *srq;
839fcaba 266 struct ipoib_cm_rx_buf *srq_ring;
2337f809
RD		 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 */
839fcaba
MT		 273 struct work_struct start_task;
274 struct work_struct reap_task;
275 struct work_struct skb_task;
518b1646 276 struct work_struct rx_reap_task;
839fcaba
MT		 277 struct delayed_work stale_task;
278 struct sk_buff_head skb_queue;
2337f809
RD		 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];
839fcaba 283 struct ib_recv_wr rx_wr;
68e995a2 284 int nonsrq_conn_qp;
586a6934
PS		 285 int max_cm_mtu;
286 int num_frags;
839fcaba
MT		 287};
288
28d52b3c
EC		 289struct ipoib_ethtool_st {
290 u16 coalesce_usecs;
291 u16 max_coalesced_frames;
292};
293
66172c09
SP		 294struct ipoib_neigh_table;
295
b63b70d8 296struct ipoib_neigh_hash {
66172c09 297 struct ipoib_neigh_table *ntbl;
b63b70d8
SP		 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;
b63b70d8
SP		 306 atomic_t entries;
307 struct completion flushed;
66172c09 308 struct completion deleted;
b63b70d8
SP		 309};
310
2c010730
ES		 311struct ipoib_qp_state_validate {
312 struct work_struct work;
313 struct ipoib_dev_priv *priv;
314};
315
1da177e4 316/*
943c246e
RD		 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).
1da177e4
LT		 320 */
321struct ipoib_dev_priv {
322 spinlock_t lock;
323
324 struct net_device *dev;
9f49a5b5 325 void (*next_priv_destructor)(struct net_device *dev);
1da177e4 326
8966e28d
ES		 327 struct napi_struct send_napi;
328 struct napi_struct recv_napi;
bea3348e 329
1da177e4
LT		 330 unsigned long flags;
331
25405d98
JG		 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 */
f47944cc 339 struct rw_semaphore vlan_rwsem;
edf3f301 340 struct mutex mcast_mutex;
1da177e4
LT		 341
342 struct rb_root path_tree;
343 struct list_head path_list;
344
b63b70d8
SP		 345 struct ipoib_neigh_table ntbl;
346
1da177e4
LT		 347 struct ipoib_mcast *broadcast;
348 struct list_head multicast_list;
349 struct rb_root multicast_tree;
350
0b39578b 351 struct workqueue_struct *wq;
c4028958 352 struct delayed_work mcast_task;
e8224e4b 353 struct work_struct carrier_on_task;
ee1e2c82
MS		 354 struct work_struct flush_light;
355 struct work_struct flush_normal;
356 struct work_struct flush_heavy;
1da177e4 357 struct work_struct restart_task;
c4028958 358 struct delayed_work ah_reap_task;
b63b70d8 359 struct delayed_work neigh_reap_task;
1da177e4 360 struct ib_device *ca;
2337f809
RD		 361 u8 port;
362 u16 pkey;
363 u16 pkey_index;
364 struct ib_pd *pd;
f56bcd80
EC		 365 struct ib_cq *recv_cq;
366 struct ib_cq *send_cq;
2337f809
RD		 367 struct ib_qp *qp;
368 u32 qkey;
1da177e4
LT		 369
370 union ib_gid local_gid;
7e93e2cb 371 u32 local_lid;
1da177e4
LT		 372
373 unsigned int admin_mtu;
374 unsigned int mcast_mtu;
bc7b3a36 375 unsigned int max_ib_mtu;
1da177e4 376
1993d683 377 struct ipoib_rx_buf *rx_ring;
1da177e4 378
1993d683 379 struct ipoib_tx_buf *tx_ring;
1acba6a8 380 /* cyclic ring variables for managing tx_ring, for UD only */
0578cdad
KH		 381 unsigned int tx_head;
382 unsigned int tx_tail;
1acba6a8
VF		 383 /* cyclic ring variables for counting overall outstanding send WRs */
384 unsigned int global_tx_head;
385 unsigned int global_tx_tail;
7143740d 386 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
e622f2f4 387 struct ib_ud_wr tx_wr;
f56bcd80 388 struct ib_wc send_wc[MAX_SEND_CQE];
1da177e4 389
bc7b3a36
SM		 390 struct ib_recv_wr rx_wr;
391 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
392
1da177e4
LT		 393 struct ib_wc ibwc[IPOIB_NUM_WC];
394
395 struct list_head dead_ahs;
396
397 struct ib_event_handler event_handler;
398
1da177e4
LT		 399 struct net_device *parent;
400 struct list_head child_intfs;
401 struct list_head list;
9baa0b03 402 int child_type;
1da177e4 403
839fcaba
MT		 404#ifdef CONFIG_INFINIBAND_IPOIB_CM
405 struct ipoib_cm_dev_priv cm;
406#endif
407
1da177e4
LT		 408#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
409 struct list_head fs_list;
410 struct dentry *mcg_dentry;
1732b0ef 411 struct dentry *path_dentry;
1da177e4 412#endif
fb532d6a 413 u64 hca_caps;
28d52b3c 414 struct ipoib_ethtool_st ethtool;
0578cdad 415 unsigned int max_send_sge;
3b561130 416 bool sm_fullmember_sendonly_support;
cd565b4b 417 const struct net_device_ops *rn_ops;
1da177e4
LT		 418};
419
420struct ipoib_ah {
421 struct net_device *dev;
2337f809 422 struct ib_ah *ah;
1da177e4 423 struct list_head list;
2337f809 424 struct kref ref;
0578cdad 425 unsigned int last_send;
fa9391db 426 int valid;
1da177e4
LT		 427};
428
429struct ipoib_path {
430 struct net_device *dev;
c2f8fc4e 431 struct sa_path_rec pathrec;
1da177e4
LT		 432 struct ipoib_ah *ah;
433 struct sk_buff_head queue;
434
435 struct list_head neigh_list;
436
2337f809 437 int query_id;
1da177e4
LT		 438 struct ib_sa_query *query;
439 struct completion done;
440
2337f809 441 struct rb_node rb_node;
1da177e4
LT		 442 struct list_head list;
443};
444
445struct ipoib_neigh {
446 struct ipoib_ah *ah;
839fcaba
MT		 447#ifdef CONFIG_INFINIBAND_IPOIB_CM
448 struct ipoib_cm_tx *cm;
449#endif
b63b70d8 450 u8 daddr[INFINIBAND_ALEN];
1da177e4
LT		 451 struct sk_buff_head queue;
452
732a2170 453 struct net_device *dev;
1da177e4
LT		 454
455 struct list_head list;
b63b70d8
SP		 456 struct ipoib_neigh __rcu *hnext;
457 struct rcu_head rcu;
458 atomic_t refcnt;
459 unsigned long alive;
1da177e4
LT		 460};
461
bc7b3a36
SM		 462#define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
463#define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
464
b63b70d8
SP		 465void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
466static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
1da177e4 467{
b63b70d8
SP		 468 if (atomic_dec_and_test(&neigh->refcnt))
469 ipoib_neigh_dtor(neigh);
1da177e4 470}
b63b70d8
SP		 471struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
472struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
732a2170 473 struct net_device *dev);
b63b70d8
SP		 474void ipoib_neigh_free(struct ipoib_neigh *neigh);
475void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
d2e0655e 476
1da177e4
LT		 477extern struct workqueue_struct *ipoib_workqueue;
478
479/* functions */
480
8966e28d
ES		 481int ipoib_rx_poll(struct napi_struct *napi, int budget);
482int ipoib_tx_poll(struct napi_struct *napi, int budget);
483void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr);
484void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr);
1da177e4
LT		 485
486struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
90898850 487 struct ib_pd *pd, struct rdma_ah_attr *attr);
1da177e4
LT		 488void ipoib_free_ah(struct kref *kref);
489static inline void ipoib_put_ah(struct ipoib_ah *ah)
490{
491 kref_put(&ah->ref, ipoib_free_ah);
492}
8ae5a8a2 493int ipoib_open(struct net_device *dev);
9f49a5b5 494void ipoib_intf_free(struct net_device *dev);
1da177e4 495int ipoib_add_pkey_attr(struct net_device *dev);
335a64a5 496int ipoib_add_umcast_attr(struct net_device *dev);
1da177e4 497
cd565b4b
ES		 498int ipoib_send(struct net_device *dev, struct sk_buff *skb,
499 struct ib_ah *address, u32 dqpn);
c4028958 500void ipoib_reap_ah(struct work_struct *work);
1da177e4 501
546481c2 502struct ipoib_path *__path_find(struct net_device *dev, void *gid);
ee1e2c82 503void ipoib_mark_paths_invalid(struct net_device *dev);
1da177e4 504void ipoib_flush_paths(struct net_device *dev);
5d6b0cb3
DD		 505struct net_device *ipoib_intf_alloc(struct ib_device *hca, u8 port,
506 const char *format);
507int ipoib_intf_init(struct ib_device *hca, u8 port, const char *format,
508 struct net_device *dev);
6d290d69 509void ipoib_ib_tx_timer_func(struct timer_list *t);
ee1e2c82
MS		 510void ipoib_ib_dev_flush_light(struct work_struct *work);
511void ipoib_ib_dev_flush_normal(struct work_struct *work);
512void ipoib_ib_dev_flush_heavy(struct work_struct *work);
26bbf13c 513void ipoib_pkey_event(struct work_struct *work);
1da177e4
LT		 514void ipoib_ib_dev_cleanup(struct net_device *dev);
515
cd565b4b 516int ipoib_ib_dev_open_default(struct net_device *dev);
efc82eee 517int ipoib_ib_dev_open(struct net_device *dev);
cd565b4b 518int ipoib_ib_dev_stop(struct net_device *dev);
5c37077f 519void ipoib_ib_dev_up(struct net_device *dev);
dfc0e555 520void ipoib_ib_dev_down(struct net_device *dev);
7ce1a3ee 521int ipoib_ib_dev_stop_default(struct net_device *dev);
db84f880 522void ipoib_pkey_dev_check_presence(struct net_device *dev);
1da177e4 523
c4028958 524void ipoib_mcast_join_task(struct work_struct *work);
e8224e4b 525void ipoib_mcast_carrier_on_task(struct work_struct *work);
b63b70d8 526void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
1da177e4 527
c4028958 528void ipoib_mcast_restart_task(struct work_struct *work);
5c37077f 529void ipoib_mcast_start_thread(struct net_device *dev);
efc82eee 530int ipoib_mcast_stop_thread(struct net_device *dev);
1da177e4
LT		 531
532void ipoib_mcast_dev_down(struct net_device *dev);
533void ipoib_mcast_dev_flush(struct net_device *dev);
534
c4268778
YS		 535int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
536void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
537 struct ipoib_tx_buf *tx_req);
538
5d6b0cb3
DD		 539struct rtnl_link_ops *ipoib_get_link_ops(void);
540
c4268778
YS		 541static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
542 struct ipoib_tx_buf *tx_req)
543{
544 int i, off;
545 struct sk_buff *skb = tx_req->skb;
546 skb_frag_t *frags = skb_shinfo(skb)->frags;
547 int nr_frags = skb_shinfo(skb)->nr_frags;
548 u64 *mapping = tx_req->mapping;
549
550 if (skb_headlen(skb)) {
551 priv->tx_sge[0].addr = mapping[0];
552 priv->tx_sge[0].length = skb_headlen(skb);
553 off = 1;
554 } else
555 off = 0;
556
557 for (i = 0; i < nr_frags; ++i) {
558 priv->tx_sge[i + off].addr = mapping[i + off];
559 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
560 }
e622f2f4 561 priv->tx_wr.wr.num_sge = nr_frags + off;
c4268778
YS		 562}
563
8ae5a8a2 564#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1da177e4 565struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
1da177e4
LT		 566int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
567void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
568 union ib_gid *gid,
569 unsigned long *created,
570 unsigned int *queuelen,
571 unsigned int *complete,
572 unsigned int *send_only);
1732b0ef
RD		 573
574struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
575int ipoib_path_iter_next(struct ipoib_path_iter *iter);
576void ipoib_path_iter_read(struct ipoib_path_iter *iter,
577 struct ipoib_path *path);
8ae5a8a2 578#endif
1da177e4 579
cd565b4b
ES		 580int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
581 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
582int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
583 union ib_gid *mgid, u16 mlid);
50be28de 584void ipoib_mcast_remove_list(struct list_head *remove_list);
432c55ff
CL		 585void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
586 struct list_head *remove_list);
1da177e4 587
5b6810e0 588int ipoib_init_qp(struct net_device *dev);
1da177e4
LT		 589int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
590void ipoib_transport_dev_cleanup(struct net_device *dev);
591
592void ipoib_event(struct ib_event_handler *handler,
593 struct ib_event *record);
594
595int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
596int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
597
9baa0b03
OG		 598int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
599 u16 pkey, int child_type);
600
601int __init ipoib_netlink_init(void);
602void __exit ipoib_netlink_fini(void);
603
862096a8
OG		 604void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
605int ipoib_set_mode(struct net_device *dev, const char *buf);
606
cd565b4b 607void ipoib_setup_common(struct net_device *dev);
9baa0b03 608
db84f880 609void ipoib_pkey_open(struct ipoib_dev_priv *priv);
2dfbfc37 610void ipoib_drain_cq(struct net_device *dev);
1da177e4 611
82c24c18
EC		 612void ipoib_set_ethtool_ops(struct net_device *dev);
613
2337f809
RD		 614#define IPOIB_FLAGS_RC 0x80
615#define IPOIB_FLAGS_UC 0x40
839fcaba
MT		 616
617/* We don't support UC connections at the moment */
618#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
619
71d9c5f9
RD		 620#ifdef CONFIG_INFINIBAND_IPOIB_CM
621
68e995a2
PS		 622extern int ipoib_max_conn_qp;
623
839fcaba
MT		 624static inline int ipoib_cm_admin_enabled(struct net_device *dev)
625{
c1048aff 626 struct ipoib_dev_priv *priv = ipoib_priv(dev);
839fcaba
MT		 627 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
628 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
629}
630
b63b70d8 631static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
839fcaba 632{
c1048aff 633 struct ipoib_dev_priv *priv = ipoib_priv(dev);
b63b70d8 634 return IPOIB_CM_SUPPORTED(hwaddr) &&
839fcaba
MT		 635 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
636}
637
638static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
639
640{
641 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
642}
643
644static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
645{
646 return neigh->cm;
647}
648
649static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
650{
651 neigh->cm = tx;
652}
653
68e995a2
PS		 654static inline int ipoib_cm_has_srq(struct net_device *dev)
655{
c1048aff 656 struct ipoib_dev_priv *priv = ipoib_priv(dev);
68e995a2
PS		 657 return !!priv->cm.srq;
658}
659
586a6934
PS		 660static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
661{
c1048aff 662 struct ipoib_dev_priv *priv = ipoib_priv(dev);
586a6934
PS		 663 return priv->cm.max_cm_mtu;
664}
665
839fcaba
MT		 666void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
667int ipoib_cm_dev_open(struct net_device *dev);
668void ipoib_cm_dev_stop(struct net_device *dev);
669int ipoib_cm_dev_init(struct net_device *dev);
670int ipoib_cm_add_mode_attr(struct net_device *dev);
671void ipoib_cm_dev_cleanup(struct net_device *dev);
672struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
673 struct ipoib_neigh *neigh);
674void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
2337f809 675void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 676 unsigned int mtu);
677void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
1b524963 678void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
839fcaba
MT		 679#else
680
681struct ipoib_cm_tx;
682
68e995a2
PS		 683#define ipoib_max_conn_qp 0
684
839fcaba
MT		 685static inline int ipoib_cm_admin_enabled(struct net_device *dev)
686{
687 return 0;
688}
b63b70d8 689static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
839fcaba
MT		 690
691{
692 return 0;
693}
694
695static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
696
697{
698 return 0;
699}
700
701static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
702{
703 return NULL;
704}
705
706static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
707{
708}
709
68e995a2
PS		 710static inline int ipoib_cm_has_srq(struct net_device *dev)
711{
712 return 0;
713}
714
586a6934
PS		 715static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
716{
717 return 0;
718}
719
839fcaba
MT		 720static inline
721void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
722{
723 return;
724}
725
726static inline
727int ipoib_cm_dev_open(struct net_device *dev)
728{
729 return 0;
730}
731
732static inline
733void ipoib_cm_dev_stop(struct net_device *dev)
734{
735 return;
736}
737
738static inline
739int ipoib_cm_dev_init(struct net_device *dev)
740{
3fda2432 741 return -EOPNOTSUPP;
839fcaba
MT		 742}
743
744static inline
745void ipoib_cm_dev_cleanup(struct net_device *dev)
746{
747 return;
748}
749
750static inline
751struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
752 struct ipoib_neigh *neigh)
753{
754 return NULL;
755}
756
757static inline
758void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
759{
760 return;
761}
762
763static inline
764int ipoib_cm_add_mode_attr(struct net_device *dev)
765{
766 return 0;
767}
768
2337f809 769static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 770 unsigned int mtu)
771{
772 dev_kfree_skb_any(skb);
773}
774
775static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
776{
777}
778
1b524963
MT		 779static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
780{
781}
839fcaba
MT		 782#endif
783
1da177e4 784#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1732b0ef
RD		 785void ipoib_create_debug_files(struct net_device *dev);
786void ipoib_delete_debug_files(struct net_device *dev);
2e061c69 787void ipoib_register_debugfs(void);
1da177e4
LT		 788void ipoib_unregister_debugfs(void);
789#else
1732b0ef
RD		 790static inline void ipoib_create_debug_files(struct net_device *dev) { }
791static inline void ipoib_delete_debug_files(struct net_device *dev) { }
2e061c69 792static inline void ipoib_register_debugfs(void) { }
1da177e4
LT		 793static inline void ipoib_unregister_debugfs(void) { }
794#endif
795
1da177e4
LT		 796#define ipoib_printk(level, priv, format, arg...) \
797 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
798#define ipoib_warn(priv, format, arg...) \
32f7451d 799do { \
800 static DEFINE_RATELIMIT_STATE(_rs, \
801 10 * HZ /*10 seconds */, \
802 100); \
803 if (__ratelimit(&_rs)) \
804 ipoib_printk(KERN_WARNING, priv, format , ## arg);\
805} while (0)
1da177e4 806
0f485251
SM		 807extern int ipoib_sendq_size;
808extern int ipoib_recvq_size;
1da177e4 809
c1a0b23b
MT		 810extern struct ib_sa_client ipoib_sa_client;
811
1da177e4
LT		 812#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
813extern int ipoib_debug_level;
814
815#define ipoib_dbg(priv, format, arg...) \
2337f809 816 do { \
1da177e4
LT		 817 if (ipoib_debug_level > 0) \
818 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
819 } while (0)
820#define ipoib_dbg_mcast(priv, format, arg...) \
2337f809 821 do { \
1da177e4
LT		 822 if (mcast_debug_level > 0) \
823 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
824 } while (0)
825#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
826#define ipoib_dbg(priv, format, arg...) \
827 do { (void) (priv); } while (0)
828#define ipoib_dbg_mcast(priv, format, arg...) \
829 do { (void) (priv); } while (0)
830#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
831
832#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
833#define ipoib_dbg_data(priv, format, arg...) \
2337f809 834 do { \
1da177e4
LT		 835 if (data_debug_level > 0) \
836 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
837 } while (0)
838#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
839#define ipoib_dbg_data(priv, format, arg...) \
840 do { (void) (priv); } while (0)
841#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
842
839fcaba
MT		 843#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
844
1da177e4 845#endif /* _IPOIB_H */
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