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[mirror_ubuntu-artful-kernel.git] / drivers / infiniband / ulp / ipoib / ipoib.h
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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
SP		 94 IPOIB_STOP_NEIGH_GC = 11,
95 IPOIB_NEIGH_TBL_FLUSH = 12,
492a7e67
MB		 96 IPOIB_FLAG_DEV_ADDR_SET = 13,
97 IPOIB_FLAG_DEV_ADDR_CTRL = 14,
198b12f7 98 IPOIB_FLAG_GOING_DOWN = 15,
1da177e4
LT		 99
100 IPOIB_MAX_BACKOFF_SECONDS = 16,
101
2337f809 102 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
1da177e4 103 IPOIB_MCAST_FLAG_SENDONLY = 1,
69911416
DL		 104 /*
105 * For IPOIB_MCAST_FLAG_BUSY
106 * When set, in flight join and mcast->mc is unreliable
107 * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or
108 * haven't started yet
109 * When clear and mcast->mc is valid pointer, join was successful
110 */
111 IPOIB_MCAST_FLAG_BUSY = 2,
1da177e4 112 IPOIB_MCAST_FLAG_ATTACHED = 3,
f56bcd80
EC		 113
114 MAX_SEND_CQE = 16,
f89271da 115 IPOIB_CM_COPYBREAK = 256,
9baa0b03
OG		 116
117 IPOIB_NON_CHILD = 0,
118 IPOIB_LEGACY_CHILD = 1,
119 IPOIB_RTNL_CHILD = 2,
1da177e4
LT		 120};
121
839fcaba
MT		 122#define IPOIB_OP_RECV (1ul << 31)
123#ifdef CONFIG_INFINIBAND_IPOIB_CM
1b524963 124#define IPOIB_OP_CM (1ul << 30)
839fcaba 125#else
1b524963 126#define IPOIB_OP_CM (0)
839fcaba
MT		 127#endif
128
9d1ad66e
SP		 129#define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
130
1da177e4
LT		 131/* structs */
132
133struct ipoib_header {
97f52eb4
SH		 134 __be16 proto;
135 u16 reserved;
1da177e4
LT		 136};
137
fc791b63
PA		 138struct ipoib_pseudo_header {
139 u8 hwaddr[INFINIBAND_ALEN];
1da177e4
LT		 140};
141
fc791b63 142static inline void skb_add_pseudo_hdr(struct sk_buff *skb)
b49fe362 143{
fc791b63
PA		 144 char *data = skb_push(skb, IPOIB_PSEUDO_LEN);
145
146 /*
147 * only the ipoib header is present now, make room for a dummy
148 * pseudo header and set skb field accordingly
149 */
150 memset(data, 0, IPOIB_PSEUDO_LEN);
151 skb_reset_mac_header(skb);
152 skb_pull(skb, IPOIB_HARD_LEN);
b49fe362
ED		 153}
154
cd565b4b
ES		 155static inline struct ipoib_dev_priv *ipoib_priv(const struct net_device *dev)
156{
157 struct rdma_netdev *rn = netdev_priv(dev);
158
159 return rn->clnt_priv;
160}
c1048aff 161
81668838
SH		 162/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
163struct ipoib_mcast {
164 struct ib_sa_mcmember_rec mcmember;
165 struct ib_sa_multicast *mc;
2337f809 166 struct ipoib_ah *ah;
81668838
SH		 167
168 struct rb_node rb_node;
169 struct list_head list;
170
171 unsigned long created;
172 unsigned long backoff;
69911416 173 unsigned long delay_until;
81668838
SH		 174
175 unsigned long flags;
176 unsigned char logcount;
177
178 struct list_head neigh_list;
179
180 struct sk_buff_head pkt_queue;
181
182 struct net_device *dev;
a9c8ba58 183 struct completion done;
81668838 184};
1da177e4 185
1993d683
RD		 186struct ipoib_rx_buf {
187 struct sk_buff *skb;
bc7b3a36 188 u64 mapping[IPOIB_UD_RX_SG];
1993d683
RD		 189};
190
191struct ipoib_tx_buf {
1da177e4 192 struct sk_buff *skb;
7143740d 193 u64 mapping[MAX_SKB_FRAGS + 1];
1da177e4
LT		 194};
195
e112373f
EC		 196struct ipoib_cm_tx_buf {
197 struct sk_buff *skb;
198 u64 mapping;
199};
200
839fcaba
MT		 201struct ib_cm_id;
202
203struct ipoib_cm_data {
204 __be32 qpn; /* High byte MUST be ignored on receive */
205 __be32 mtu;
206};
207
518b1646
MT		 208/*
209 * Quoting 10.3.1 Queue Pair and EE Context States:
210 *
211 * Note, for QPs that are associated with an SRQ, the Consumer should take the
212 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
213 * Reset State. The Consumer may invoke the Destroy QP without first performing
214 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
215 * Last WQE Reached Event. However, if the Consumer does not wait for the
216 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
217 * leakage may occur. Therefore, it is good programming practice to tear down a
218 * QP that is associated with an SRQ by using the following process:
219 *
220 * - Put the QP in the Error State
221 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
222 * - either:
223 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
224 * to be empty or the number of Poll CQ operations has exceeded
225 * CQ capacity size;
226 * - or
227 * post another WR that completes on the same CQ and wait for this
228 * WR to return as a WC;
229 * - and then invoke a Destroy QP or Reset QP.
230 *
231 * We use the second option and wait for a completion on the
ec56dc0b 232 * same CQ before destroying QPs attached to our SRQ.
518b1646
MT		 233 */
234
235enum ipoib_cm_state {
236 IPOIB_CM_RX_LIVE,
237 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
238 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
239};
240
839fcaba 241struct ipoib_cm_rx {
2337f809
RD		 242 struct ib_cm_id *id;
243 struct ib_qp *qp;
68e995a2 244 struct ipoib_cm_rx_buf *rx_ring;
2337f809
RD		 245 struct list_head list;
246 struct net_device *dev;
247 unsigned long jiffies;
248 enum ipoib_cm_state state;
68e995a2 249 int recv_count;
839fcaba
MT		 250};
251
252struct ipoib_cm_tx {
2337f809
RD		 253 struct ib_cm_id *id;
254 struct ib_qp *qp;
839fcaba
MT		 255 struct list_head list;
256 struct net_device *dev;
257 struct ipoib_neigh *neigh;
258 struct ipoib_path *path;
c4268778 259 struct ipoib_tx_buf *tx_ring;
2337f809
RD		 260 unsigned tx_head;
261 unsigned tx_tail;
262 unsigned long flags;
263 u32 mtu;
78a50a5e 264 unsigned max_send_sge;
839fcaba
MT		 265};
266
267struct ipoib_cm_rx_buf {
268 struct sk_buff *skb;
269 u64 mapping[IPOIB_CM_RX_SG];
270};
271
272struct ipoib_cm_dev_priv {
2337f809 273 struct ib_srq *srq;
839fcaba 274 struct ipoib_cm_rx_buf *srq_ring;
2337f809
RD		 275 struct ib_cm_id *id;
276 struct list_head passive_ids; /* state: LIVE */
277 struct list_head rx_error_list; /* state: ERROR */
278 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
279 struct list_head rx_drain_list; /* state: FLUSH, drain started */
280 struct list_head rx_reap_list; /* state: FLUSH, drain done */
839fcaba
MT		 281 struct work_struct start_task;
282 struct work_struct reap_task;
283 struct work_struct skb_task;
518b1646 284 struct work_struct rx_reap_task;
839fcaba
MT		 285 struct delayed_work stale_task;
286 struct sk_buff_head skb_queue;
2337f809
RD		 287 struct list_head start_list;
288 struct list_head reap_list;
289 struct ib_wc ibwc[IPOIB_NUM_WC];
290 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
839fcaba 291 struct ib_recv_wr rx_wr;
68e995a2 292 int nonsrq_conn_qp;
586a6934
PS		 293 int max_cm_mtu;
294 int num_frags;
839fcaba
MT		 295};
296
28d52b3c
EC		 297struct ipoib_ethtool_st {
298 u16 coalesce_usecs;
299 u16 max_coalesced_frames;
300};
301
66172c09
SP		 302struct ipoib_neigh_table;
303
b63b70d8 304struct ipoib_neigh_hash {
66172c09 305 struct ipoib_neigh_table *ntbl;
b63b70d8
SP		 306 struct ipoib_neigh __rcu **buckets;
307 struct rcu_head rcu;
308 u32 mask;
309 u32 size;
310};
311
312struct ipoib_neigh_table {
313 struct ipoib_neigh_hash __rcu *htbl;
b63b70d8
SP		 314 atomic_t entries;
315 struct completion flushed;
66172c09 316 struct completion deleted;
b63b70d8
SP		 317};
318
2c010730
ES		 319struct ipoib_qp_state_validate {
320 struct work_struct work;
321 struct ipoib_dev_priv *priv;
322};
323
1da177e4 324/*
943c246e
RD		 325 * Device private locking: network stack tx_lock protects members used
326 * in TX fast path, lock protects everything else. lock nests inside
327 * of tx_lock (ie tx_lock must be acquired first if needed).
1da177e4
LT		 328 */
329struct ipoib_dev_priv {
330 spinlock_t lock;
331
332 struct net_device *dev;
333
bea3348e
SH		 334 struct napi_struct napi;
335
1da177e4
LT		 336 unsigned long flags;
337
f47944cc 338 struct rw_semaphore vlan_rwsem;
1da177e4
LT		 339
340 struct rb_root path_tree;
341 struct list_head path_list;
342
b63b70d8
SP		 343 struct ipoib_neigh_table ntbl;
344
1da177e4
LT		 345 struct ipoib_mcast *broadcast;
346 struct list_head multicast_list;
347 struct rb_root multicast_tree;
348
0b39578b 349 struct workqueue_struct *wq;
c4028958 350 struct delayed_work mcast_task;
e8224e4b 351 struct work_struct carrier_on_task;
ee1e2c82
MS		 352 struct work_struct flush_light;
353 struct work_struct flush_normal;
354 struct work_struct flush_heavy;
1da177e4 355 struct work_struct restart_task;
c4028958 356 struct delayed_work ah_reap_task;
b63b70d8 357 struct delayed_work neigh_reap_task;
1da177e4 358 struct ib_device *ca;
2337f809
RD		 359 u8 port;
360 u16 pkey;
361 u16 pkey_index;
362 struct ib_pd *pd;
f56bcd80
EC		 363 struct ib_cq *recv_cq;
364 struct ib_cq *send_cq;
2337f809
RD		 365 struct ib_qp *qp;
366 u32 qkey;
1da177e4
LT		 367
368 union ib_gid local_gid;
2337f809 369 u16 local_lid;
1da177e4
LT		 370
371 unsigned int admin_mtu;
372 unsigned int mcast_mtu;
bc7b3a36 373 unsigned int max_ib_mtu;
1da177e4 374
1993d683 375 struct ipoib_rx_buf *rx_ring;
1da177e4 376
1993d683 377 struct ipoib_tx_buf *tx_ring;
2337f809
RD		 378 unsigned tx_head;
379 unsigned tx_tail;
7143740d 380 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
e622f2f4 381 struct ib_ud_wr tx_wr;
2337f809 382 unsigned tx_outstanding;
f56bcd80 383 struct ib_wc send_wc[MAX_SEND_CQE];
1da177e4 384
bc7b3a36
SM		 385 struct ib_recv_wr rx_wr;
386 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
387
1da177e4
LT		 388 struct ib_wc ibwc[IPOIB_NUM_WC];
389
390 struct list_head dead_ahs;
391
392 struct ib_event_handler event_handler;
393
1da177e4
LT		 394 struct net_device *parent;
395 struct list_head child_intfs;
396 struct list_head list;
9baa0b03 397 int child_type;
1da177e4 398
839fcaba
MT		 399#ifdef CONFIG_INFINIBAND_IPOIB_CM
400 struct ipoib_cm_dev_priv cm;
401#endif
402
1da177e4
LT		 403#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
404 struct list_head fs_list;
405 struct dentry *mcg_dentry;
1732b0ef 406 struct dentry *path_dentry;
1da177e4 407#endif
fb532d6a 408 u64 hca_caps;
28d52b3c 409 struct ipoib_ethtool_st ethtool;
57ce41d1 410 struct timer_list poll_timer;
78a50a5e 411 unsigned max_send_sge;
3b561130 412 bool sm_fullmember_sendonly_support;
cd565b4b 413 const struct net_device_ops *rn_ops;
1da177e4
LT		 414};
415
416struct ipoib_ah {
417 struct net_device *dev;
2337f809 418 struct ib_ah *ah;
1da177e4 419 struct list_head list;
2337f809
RD		 420 struct kref ref;
421 unsigned last_send;
1da177e4
LT		 422};
423
424struct ipoib_path {
425 struct net_device *dev;
426 struct ib_sa_path_rec pathrec;
427 struct ipoib_ah *ah;
428 struct sk_buff_head queue;
429
430 struct list_head neigh_list;
431
2337f809 432 int query_id;
1da177e4
LT		 433 struct ib_sa_query *query;
434 struct completion done;
435
2337f809 436 struct rb_node rb_node;
1da177e4 437 struct list_head list;
ee1e2c82 438 int valid;
1da177e4
LT		 439};
440
441struct ipoib_neigh {
442 struct ipoib_ah *ah;
839fcaba
MT		 443#ifdef CONFIG_INFINIBAND_IPOIB_CM
444 struct ipoib_cm_tx *cm;
445#endif
b63b70d8 446 u8 daddr[INFINIBAND_ALEN];
1da177e4
LT		 447 struct sk_buff_head queue;
448
732a2170 449 struct net_device *dev;
1da177e4
LT		 450
451 struct list_head list;
b63b70d8
SP		 452 struct ipoib_neigh __rcu *hnext;
453 struct rcu_head rcu;
454 atomic_t refcnt;
455 unsigned long alive;
1da177e4
LT		 456};
457
bc7b3a36
SM		 458#define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
459#define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
460
b63b70d8
SP		 461void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
462static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
1da177e4 463{
b63b70d8
SP		 464 if (atomic_dec_and_test(&neigh->refcnt))
465 ipoib_neigh_dtor(neigh);
1da177e4 466}
b63b70d8
SP		 467struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
468struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
732a2170 469 struct net_device *dev);
b63b70d8
SP		 470void ipoib_neigh_free(struct ipoib_neigh *neigh);
471void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
d2e0655e 472
1da177e4
LT		 473extern struct workqueue_struct *ipoib_workqueue;
474
475/* functions */
476
bea3348e 477int ipoib_poll(struct napi_struct *napi, int budget);
1da177e4 478void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
57ce41d1 479void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
1da177e4
LT		 480
481struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
90898850 482 struct ib_pd *pd, struct rdma_ah_attr *attr);
1da177e4
LT		 483void ipoib_free_ah(struct kref *kref);
484static inline void ipoib_put_ah(struct ipoib_ah *ah)
485{
486 kref_put(&ah->ref, ipoib_free_ah);
487}
8ae5a8a2 488int ipoib_open(struct net_device *dev);
1da177e4 489int ipoib_add_pkey_attr(struct net_device *dev);
335a64a5 490int ipoib_add_umcast_attr(struct net_device *dev);
1da177e4 491
cd565b4b
ES		 492int ipoib_send(struct net_device *dev, struct sk_buff *skb,
493 struct ib_ah *address, u32 dqpn);
c4028958 494void ipoib_reap_ah(struct work_struct *work);
1da177e4 495
546481c2 496struct ipoib_path *__path_find(struct net_device *dev, void *gid);
ee1e2c82 497void ipoib_mark_paths_invalid(struct net_device *dev);
1da177e4 498void ipoib_flush_paths(struct net_device *dev);
cd565b4b
ES		 499struct ipoib_dev_priv *ipoib_intf_alloc(struct ib_device *hca, u8 port,
500 const char *format);
515ed4f3 501void ipoib_ib_tx_timer_func(unsigned long ctx);
ee1e2c82
MS		 502void ipoib_ib_dev_flush_light(struct work_struct *work);
503void ipoib_ib_dev_flush_normal(struct work_struct *work);
504void ipoib_ib_dev_flush_heavy(struct work_struct *work);
26bbf13c 505void ipoib_pkey_event(struct work_struct *work);
1da177e4
LT		 506void ipoib_ib_dev_cleanup(struct net_device *dev);
507
cd565b4b 508int ipoib_ib_dev_open_default(struct net_device *dev);
efc82eee 509int ipoib_ib_dev_open(struct net_device *dev);
cd565b4b 510int ipoib_ib_dev_stop(struct net_device *dev);
5c37077f 511void ipoib_ib_dev_up(struct net_device *dev);
dfc0e555 512void ipoib_ib_dev_down(struct net_device *dev);
7ce1a3ee 513int ipoib_ib_dev_stop_default(struct net_device *dev);
db84f880 514void ipoib_pkey_dev_check_presence(struct net_device *dev);
1da177e4
LT		 515
516int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
517void ipoib_dev_cleanup(struct net_device *dev);
518
c4028958 519void ipoib_mcast_join_task(struct work_struct *work);
e8224e4b 520void ipoib_mcast_carrier_on_task(struct work_struct *work);
b63b70d8 521void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
1da177e4 522
c4028958 523void ipoib_mcast_restart_task(struct work_struct *work);
5c37077f 524void ipoib_mcast_start_thread(struct net_device *dev);
efc82eee 525int ipoib_mcast_stop_thread(struct net_device *dev);
1da177e4
LT		 526
527void ipoib_mcast_dev_down(struct net_device *dev);
528void ipoib_mcast_dev_flush(struct net_device *dev);
529
c4268778
YS		 530int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
531void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
532 struct ipoib_tx_buf *tx_req);
533
534static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
535 struct ipoib_tx_buf *tx_req)
536{
537 int i, off;
538 struct sk_buff *skb = tx_req->skb;
539 skb_frag_t *frags = skb_shinfo(skb)->frags;
540 int nr_frags = skb_shinfo(skb)->nr_frags;
541 u64 *mapping = tx_req->mapping;
542
543 if (skb_headlen(skb)) {
544 priv->tx_sge[0].addr = mapping[0];
545 priv->tx_sge[0].length = skb_headlen(skb);
546 off = 1;
547 } else
548 off = 0;
549
550 for (i = 0; i < nr_frags; ++i) {
551 priv->tx_sge[i + off].addr = mapping[i + off];
552 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
553 }
e622f2f4 554 priv->tx_wr.wr.num_sge = nr_frags + off;
c4268778
YS		 555}
556
8ae5a8a2 557#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1da177e4 558struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
1da177e4
LT		 559int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
560void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
561 union ib_gid *gid,
562 unsigned long *created,
563 unsigned int *queuelen,
564 unsigned int *complete,
565 unsigned int *send_only);
1732b0ef
RD		 566
567struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
568int ipoib_path_iter_next(struct ipoib_path_iter *iter);
569void ipoib_path_iter_read(struct ipoib_path_iter *iter,
570 struct ipoib_path *path);
8ae5a8a2 571#endif
1da177e4 572
cd565b4b
ES		 573int ipoib_mcast_attach(struct net_device *dev, struct ib_device *hca,
574 union ib_gid *mgid, u16 mlid, int set_qkey, u32 qkey);
575int ipoib_mcast_detach(struct net_device *dev, struct ib_device *hca,
576 union ib_gid *mgid, u16 mlid);
50be28de 577void ipoib_mcast_remove_list(struct list_head *remove_list);
432c55ff
CL		 578void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
579 struct list_head *remove_list);
1da177e4 580
5b6810e0 581int ipoib_init_qp(struct net_device *dev);
1da177e4
LT		 582int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
583void ipoib_transport_dev_cleanup(struct net_device *dev);
584
585void ipoib_event(struct ib_event_handler *handler,
586 struct ib_event *record);
587
588int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
589int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
590
9baa0b03
OG		 591int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
592 u16 pkey, int child_type);
593
594int __init ipoib_netlink_init(void);
595void __exit ipoib_netlink_fini(void);
596
862096a8
OG		 597void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
598int ipoib_set_mode(struct net_device *dev, const char *buf);
599
cd565b4b 600void ipoib_setup_common(struct net_device *dev);
9baa0b03 601
db84f880 602void ipoib_pkey_open(struct ipoib_dev_priv *priv);
2dfbfc37 603void ipoib_drain_cq(struct net_device *dev);
1da177e4 604
82c24c18 605void ipoib_set_ethtool_ops(struct net_device *dev);
f7534f45 606void ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
82c24c18 607
2337f809
RD		 608#define IPOIB_FLAGS_RC 0x80
609#define IPOIB_FLAGS_UC 0x40
839fcaba
MT		 610
611/* We don't support UC connections at the moment */
612#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
613
71d9c5f9
RD		 614#ifdef CONFIG_INFINIBAND_IPOIB_CM
615
68e995a2
PS		 616extern int ipoib_max_conn_qp;
617
839fcaba
MT		 618static inline int ipoib_cm_admin_enabled(struct net_device *dev)
619{
c1048aff 620 struct ipoib_dev_priv *priv = ipoib_priv(dev);
839fcaba
MT		 621 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
622 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
623}
624
b63b70d8 625static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
839fcaba 626{
c1048aff 627 struct ipoib_dev_priv *priv = ipoib_priv(dev);
b63b70d8 628 return IPOIB_CM_SUPPORTED(hwaddr) &&
839fcaba
MT		 629 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
630}
631
632static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
633
634{
635 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
636}
637
638static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
639{
640 return neigh->cm;
641}
642
643static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
644{
645 neigh->cm = tx;
646}
647
68e995a2
PS		 648static inline int ipoib_cm_has_srq(struct net_device *dev)
649{
c1048aff 650 struct ipoib_dev_priv *priv = ipoib_priv(dev);
68e995a2
PS		 651 return !!priv->cm.srq;
652}
653
586a6934
PS		 654static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
655{
c1048aff 656 struct ipoib_dev_priv *priv = ipoib_priv(dev);
586a6934
PS		 657 return priv->cm.max_cm_mtu;
658}
659
839fcaba
MT		 660void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
661int ipoib_cm_dev_open(struct net_device *dev);
662void ipoib_cm_dev_stop(struct net_device *dev);
663int ipoib_cm_dev_init(struct net_device *dev);
664int ipoib_cm_add_mode_attr(struct net_device *dev);
665void ipoib_cm_dev_cleanup(struct net_device *dev);
666struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
667 struct ipoib_neigh *neigh);
668void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
2337f809 669void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 670 unsigned int mtu);
671void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
1b524963 672void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
839fcaba
MT		 673#else
674
675struct ipoib_cm_tx;
676
68e995a2
PS		 677#define ipoib_max_conn_qp 0
678
839fcaba
MT		 679static inline int ipoib_cm_admin_enabled(struct net_device *dev)
680{
681 return 0;
682}
b63b70d8 683static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
839fcaba
MT		 684
685{
686 return 0;
687}
688
689static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
690
691{
692 return 0;
693}
694
695static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
696{
697 return NULL;
698}
699
700static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
701{
702}
703
68e995a2
PS		 704static inline int ipoib_cm_has_srq(struct net_device *dev)
705{
706 return 0;
707}
708
586a6934
PS		 709static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
710{
711 return 0;
712}
713
839fcaba
MT		 714static inline
715void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
716{
717 return;
718}
719
720static inline
721int ipoib_cm_dev_open(struct net_device *dev)
722{
723 return 0;
724}
725
726static inline
727void ipoib_cm_dev_stop(struct net_device *dev)
728{
729 return;
730}
731
732static inline
733int ipoib_cm_dev_init(struct net_device *dev)
734{
735 return -ENOSYS;
736}
737
738static inline
739void ipoib_cm_dev_cleanup(struct net_device *dev)
740{
741 return;
742}
743
744static inline
745struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
746 struct ipoib_neigh *neigh)
747{
748 return NULL;
749}
750
751static inline
752void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
753{
754 return;
755}
756
757static inline
758int ipoib_cm_add_mode_attr(struct net_device *dev)
759{
760 return 0;
761}
762
2337f809 763static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 764 unsigned int mtu)
765{
766 dev_kfree_skb_any(skb);
767}
768
769static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
770{
771}
772
1b524963
MT		 773static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
774{
775}
839fcaba
MT		 776#endif
777
1da177e4 778#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1732b0ef
RD		 779void ipoib_create_debug_files(struct net_device *dev);
780void ipoib_delete_debug_files(struct net_device *dev);
1da177e4
LT		 781int ipoib_register_debugfs(void);
782void ipoib_unregister_debugfs(void);
783#else
1732b0ef
RD		 784static inline void ipoib_create_debug_files(struct net_device *dev) { }
785static inline void ipoib_delete_debug_files(struct net_device *dev) { }
1da177e4
LT		 786static inline int ipoib_register_debugfs(void) { return 0; }
787static inline void ipoib_unregister_debugfs(void) { }
788#endif
789
1da177e4
LT		 790#define ipoib_printk(level, priv, format, arg...) \
791 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
792#define ipoib_warn(priv, format, arg...) \
32f7451d 793do { \
794 static DEFINE_RATELIMIT_STATE(_rs, \
795 10 * HZ /*10 seconds */, \
796 100); \
797 if (__ratelimit(&_rs)) \
798 ipoib_printk(KERN_WARNING, priv, format , ## arg);\
799} while (0)
1da177e4 800
0f485251
SM		 801extern int ipoib_sendq_size;
802extern int ipoib_recvq_size;
1da177e4 803
c1a0b23b
MT		 804extern struct ib_sa_client ipoib_sa_client;
805
1da177e4
LT		 806#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
807extern int ipoib_debug_level;
808
809#define ipoib_dbg(priv, format, arg...) \
2337f809 810 do { \
1da177e4
LT		 811 if (ipoib_debug_level > 0) \
812 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
813 } while (0)
814#define ipoib_dbg_mcast(priv, format, arg...) \
2337f809 815 do { \
1da177e4
LT		 816 if (mcast_debug_level > 0) \
817 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
818 } while (0)
819#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
820#define ipoib_dbg(priv, format, arg...) \
821 do { (void) (priv); } while (0)
822#define ipoib_dbg_mcast(priv, format, arg...) \
823 do { (void) (priv); } while (0)
824#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
825
826#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
827#define ipoib_dbg_data(priv, format, arg...) \
2337f809 828 do { \
1da177e4
LT		 829 if (data_debug_level > 0) \
830 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
831 } while (0)
832#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
833#define ipoib_dbg_data(priv, format, arg...) \
834 do { (void) (priv); } while (0)
835#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
836
839fcaba
MT		 837#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
838
4b48680b
YB		 839extern const char ipoib_driver_version[];
840
1da177e4 841#endif /* _IPOIB_H */
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