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i40iw: Set maj_err and min_err in i40iw_sc_cqp_create
[mirror_ubuntu-artful-kernel.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,
fc791b63
PA		 66 IPOIB_PSEUDO_LEN = 20,
67 IPOIB_HARD_LEN = IPOIB_ENCAP_LEN + IPOIB_PSEUDO_LEN,
1da177e4 68
bc7b3a36
SM		 69 IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN,
70 IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */
71
2337f809
RD		 72 IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */
73 IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN,
74 IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE,
75 IPOIB_CM_RX_SG = ALIGN(IPOIB_CM_BUF_SIZE, PAGE_SIZE) / PAGE_SIZE,
bc3a290b
EC		 76 IPOIB_RX_RING_SIZE = 256,
77 IPOIB_TX_RING_SIZE = 128,
0f485251
SM		 78 IPOIB_MAX_QUEUE_SIZE = 8192,
79 IPOIB_MIN_QUEUE_SIZE = 2,
68e995a2 80 IPOIB_CM_MAX_CONN_QP = 4096,
1da177e4 81
2337f809 82 IPOIB_NUM_WC = 4,
1da177e4
LT		 83
84 IPOIB_MAX_PATH_REC_QUEUE = 3,
2866196f 85 IPOIB_MAX_MCAST_QUEUE = 64,
2337f809
RD		 86
87 IPOIB_FLAG_OPER_UP = 0,
88 IPOIB_FLAG_INITIALIZED = 1,
89 IPOIB_FLAG_ADMIN_UP = 2,
90 IPOIB_PKEY_ASSIGNED = 3,
2337f809 91 IPOIB_FLAG_SUBINTERFACE = 5,
2337f809 92 IPOIB_STOP_REAPER = 7,
2337f809 93 IPOIB_FLAG_ADMIN_CM = 9,
1b524963 94 IPOIB_FLAG_UMCAST = 10,
b63b70d8
SP		 95 IPOIB_STOP_NEIGH_GC = 11,
96 IPOIB_NEIGH_TBL_FLUSH = 12,
492a7e67
MB		 97 IPOIB_FLAG_DEV_ADDR_SET = 13,
98 IPOIB_FLAG_DEV_ADDR_CTRL = 14,
198b12f7 99 IPOIB_FLAG_GOING_DOWN = 15,
1da177e4
LT		 100
101 IPOIB_MAX_BACKOFF_SECONDS = 16,
102
2337f809 103 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
1da177e4 104 IPOIB_MCAST_FLAG_SENDONLY = 1,
69911416
DL		 105 /*
106 * For IPOIB_MCAST_FLAG_BUSY
107 * When set, in flight join and mcast->mc is unreliable
108 * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or
109 * haven't started yet
110 * When clear and mcast->mc is valid pointer, join was successful
111 */
112 IPOIB_MCAST_FLAG_BUSY = 2,
1da177e4 113 IPOIB_MCAST_FLAG_ATTACHED = 3,
f56bcd80
EC		 114
115 MAX_SEND_CQE = 16,
f89271da 116 IPOIB_CM_COPYBREAK = 256,
9baa0b03
OG		 117
118 IPOIB_NON_CHILD = 0,
119 IPOIB_LEGACY_CHILD = 1,
120 IPOIB_RTNL_CHILD = 2,
1da177e4
LT		 121};
122
839fcaba
MT		 123#define IPOIB_OP_RECV (1ul << 31)
124#ifdef CONFIG_INFINIBAND_IPOIB_CM
1b524963 125#define IPOIB_OP_CM (1ul << 30)
839fcaba 126#else
1b524963 127#define IPOIB_OP_CM (0)
839fcaba
MT		 128#endif
129
9d1ad66e
SP		 130#define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
131
1da177e4
LT		 132/* structs */
133
134struct ipoib_header {
97f52eb4
SH		 135 __be16 proto;
136 u16 reserved;
1da177e4
LT		 137};
138
fc791b63
PA		 139struct ipoib_pseudo_header {
140 u8 hwaddr[INFINIBAND_ALEN];
1da177e4
LT		 141};
142
fc791b63 143static inline void skb_add_pseudo_hdr(struct sk_buff *skb)
b49fe362 144{
fc791b63
PA		 145 char *data = skb_push(skb, IPOIB_PSEUDO_LEN);
146
147 /*
148 * only the ipoib header is present now, make room for a dummy
149 * pseudo header and set skb field accordingly
150 */
151 memset(data, 0, IPOIB_PSEUDO_LEN);
152 skb_reset_mac_header(skb);
153 skb_pull(skb, IPOIB_HARD_LEN);
b49fe362
ED		 154}
155
81668838
SH		 156/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
157struct ipoib_mcast {
158 struct ib_sa_mcmember_rec mcmember;
159 struct ib_sa_multicast *mc;
2337f809 160 struct ipoib_ah *ah;
81668838
SH		 161
162 struct rb_node rb_node;
163 struct list_head list;
164
165 unsigned long created;
166 unsigned long backoff;
69911416 167 unsigned long delay_until;
81668838
SH		 168
169 unsigned long flags;
170 unsigned char logcount;
171
172 struct list_head neigh_list;
173
174 struct sk_buff_head pkt_queue;
175
176 struct net_device *dev;
a9c8ba58 177 struct completion done;
81668838 178};
1da177e4 179
1993d683
RD		 180struct ipoib_rx_buf {
181 struct sk_buff *skb;
bc7b3a36 182 u64 mapping[IPOIB_UD_RX_SG];
1993d683
RD		 183};
184
185struct ipoib_tx_buf {
1da177e4 186 struct sk_buff *skb;
7143740d 187 u64 mapping[MAX_SKB_FRAGS + 1];
1da177e4
LT		 188};
189
e112373f
EC		 190struct ipoib_cm_tx_buf {
191 struct sk_buff *skb;
192 u64 mapping;
193};
194
839fcaba
MT		 195struct ib_cm_id;
196
197struct ipoib_cm_data {
198 __be32 qpn; /* High byte MUST be ignored on receive */
199 __be32 mtu;
200};
201
518b1646
MT		 202/*
203 * Quoting 10.3.1 Queue Pair and EE Context States:
204 *
205 * Note, for QPs that are associated with an SRQ, the Consumer should take the
206 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
207 * Reset State. The Consumer may invoke the Destroy QP without first performing
208 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
209 * Last WQE Reached Event. However, if the Consumer does not wait for the
210 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
211 * leakage may occur. Therefore, it is good programming practice to tear down a
212 * QP that is associated with an SRQ by using the following process:
213 *
214 * - Put the QP in the Error State
215 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
216 * - either:
217 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
218 * to be empty or the number of Poll CQ operations has exceeded
219 * CQ capacity size;
220 * - or
221 * post another WR that completes on the same CQ and wait for this
222 * WR to return as a WC;
223 * - and then invoke a Destroy QP or Reset QP.
224 *
225 * We use the second option and wait for a completion on the
ec56dc0b 226 * same CQ before destroying QPs attached to our SRQ.
518b1646
MT		 227 */
228
229enum ipoib_cm_state {
230 IPOIB_CM_RX_LIVE,
231 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
232 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
233};
234
839fcaba 235struct ipoib_cm_rx {
2337f809
RD		 236 struct ib_cm_id *id;
237 struct ib_qp *qp;
68e995a2 238 struct ipoib_cm_rx_buf *rx_ring;
2337f809
RD		 239 struct list_head list;
240 struct net_device *dev;
241 unsigned long jiffies;
242 enum ipoib_cm_state state;
68e995a2 243 int recv_count;
839fcaba
MT		 244};
245
246struct ipoib_cm_tx {
2337f809
RD		 247 struct ib_cm_id *id;
248 struct ib_qp *qp;
839fcaba
MT		 249 struct list_head list;
250 struct net_device *dev;
251 struct ipoib_neigh *neigh;
252 struct ipoib_path *path;
c4268778 253 struct ipoib_tx_buf *tx_ring;
2337f809
RD		 254 unsigned tx_head;
255 unsigned tx_tail;
256 unsigned long flags;
257 u32 mtu;
78a50a5e 258 unsigned max_send_sge;
839fcaba
MT		 259};
260
261struct ipoib_cm_rx_buf {
262 struct sk_buff *skb;
263 u64 mapping[IPOIB_CM_RX_SG];
264};
265
266struct ipoib_cm_dev_priv {
2337f809 267 struct ib_srq *srq;
839fcaba 268 struct ipoib_cm_rx_buf *srq_ring;
2337f809
RD		 269 struct ib_cm_id *id;
270 struct list_head passive_ids; /* state: LIVE */
271 struct list_head rx_error_list; /* state: ERROR */
272 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
273 struct list_head rx_drain_list; /* state: FLUSH, drain started */
274 struct list_head rx_reap_list; /* state: FLUSH, drain done */
839fcaba
MT		 275 struct work_struct start_task;
276 struct work_struct reap_task;
277 struct work_struct skb_task;
518b1646 278 struct work_struct rx_reap_task;
839fcaba
MT		 279 struct delayed_work stale_task;
280 struct sk_buff_head skb_queue;
2337f809
RD		 281 struct list_head start_list;
282 struct list_head reap_list;
283 struct ib_wc ibwc[IPOIB_NUM_WC];
284 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
839fcaba 285 struct ib_recv_wr rx_wr;
68e995a2 286 int nonsrq_conn_qp;
586a6934
PS		 287 int max_cm_mtu;
288 int num_frags;
839fcaba
MT		 289};
290
28d52b3c
EC		 291struct ipoib_ethtool_st {
292 u16 coalesce_usecs;
293 u16 max_coalesced_frames;
294};
295
66172c09
SP		 296struct ipoib_neigh_table;
297
b63b70d8 298struct ipoib_neigh_hash {
66172c09 299 struct ipoib_neigh_table *ntbl;
b63b70d8
SP		 300 struct ipoib_neigh __rcu **buckets;
301 struct rcu_head rcu;
302 u32 mask;
303 u32 size;
304};
305
306struct ipoib_neigh_table {
307 struct ipoib_neigh_hash __rcu *htbl;
b63b70d8
SP		 308 atomic_t entries;
309 struct completion flushed;
66172c09 310 struct completion deleted;
b63b70d8
SP		 311};
312
2c010730
ES		 313struct ipoib_qp_state_validate {
314 struct work_struct work;
315 struct ipoib_dev_priv *priv;
316};
317
1da177e4 318/*
943c246e
RD		 319 * Device private locking: network stack tx_lock protects members used
320 * in TX fast path, lock protects everything else. lock nests inside
321 * of tx_lock (ie tx_lock must be acquired first if needed).
1da177e4
LT		 322 */
323struct ipoib_dev_priv {
324 spinlock_t lock;
325
326 struct net_device *dev;
327
bea3348e
SH		 328 struct napi_struct napi;
329
1da177e4
LT		 330 unsigned long flags;
331
f47944cc 332 struct rw_semaphore vlan_rwsem;
1da177e4
LT		 333
334 struct rb_root path_tree;
335 struct list_head path_list;
336
b63b70d8
SP		 337 struct ipoib_neigh_table ntbl;
338
1da177e4
LT		 339 struct ipoib_mcast *broadcast;
340 struct list_head multicast_list;
341 struct rb_root multicast_tree;
342
0b39578b 343 struct workqueue_struct *wq;
c4028958 344 struct delayed_work mcast_task;
e8224e4b 345 struct work_struct carrier_on_task;
ee1e2c82
MS		 346 struct work_struct flush_light;
347 struct work_struct flush_normal;
348 struct work_struct flush_heavy;
1da177e4 349 struct work_struct restart_task;
c4028958 350 struct delayed_work ah_reap_task;
b63b70d8 351 struct delayed_work neigh_reap_task;
1da177e4 352 struct ib_device *ca;
2337f809
RD		 353 u8 port;
354 u16 pkey;
355 u16 pkey_index;
356 struct ib_pd *pd;
f56bcd80
EC		 357 struct ib_cq *recv_cq;
358 struct ib_cq *send_cq;
2337f809
RD		 359 struct ib_qp *qp;
360 u32 qkey;
1da177e4
LT		 361
362 union ib_gid local_gid;
2337f809 363 u16 local_lid;
1da177e4
LT		 364
365 unsigned int admin_mtu;
366 unsigned int mcast_mtu;
bc7b3a36 367 unsigned int max_ib_mtu;
1da177e4 368
1993d683 369 struct ipoib_rx_buf *rx_ring;
1da177e4 370
1993d683 371 struct ipoib_tx_buf *tx_ring;
2337f809
RD		 372 unsigned tx_head;
373 unsigned tx_tail;
7143740d 374 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
e622f2f4 375 struct ib_ud_wr tx_wr;
2337f809 376 unsigned tx_outstanding;
f56bcd80 377 struct ib_wc send_wc[MAX_SEND_CQE];
1da177e4 378
bc7b3a36
SM		 379 struct ib_recv_wr rx_wr;
380 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
381
1da177e4
LT		 382 struct ib_wc ibwc[IPOIB_NUM_WC];
383
384 struct list_head dead_ahs;
385
386 struct ib_event_handler event_handler;
387
1da177e4
LT		 388 struct net_device *parent;
389 struct list_head child_intfs;
390 struct list_head list;
9baa0b03 391 int child_type;
1da177e4 392
839fcaba
MT		 393#ifdef CONFIG_INFINIBAND_IPOIB_CM
394 struct ipoib_cm_dev_priv cm;
395#endif
396
1da177e4
LT		 397#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
398 struct list_head fs_list;
399 struct dentry *mcg_dentry;
1732b0ef 400 struct dentry *path_dentry;
1da177e4 401#endif
fb532d6a 402 u64 hca_caps;
28d52b3c 403 struct ipoib_ethtool_st ethtool;
57ce41d1 404 struct timer_list poll_timer;
78a50a5e 405 unsigned max_send_sge;
3b561130 406 bool sm_fullmember_sendonly_support;
1da177e4
LT		 407};
408
409struct ipoib_ah {
410 struct net_device *dev;
2337f809 411 struct ib_ah *ah;
1da177e4 412 struct list_head list;
2337f809
RD		 413 struct kref ref;
414 unsigned last_send;
1da177e4
LT		 415};
416
417struct ipoib_path {
418 struct net_device *dev;
419 struct ib_sa_path_rec pathrec;
420 struct ipoib_ah *ah;
421 struct sk_buff_head queue;
422
423 struct list_head neigh_list;
424
2337f809 425 int query_id;
1da177e4
LT		 426 struct ib_sa_query *query;
427 struct completion done;
428
2337f809 429 struct rb_node rb_node;
1da177e4 430 struct list_head list;
ee1e2c82 431 int valid;
1da177e4
LT		 432};
433
434struct ipoib_neigh {
435 struct ipoib_ah *ah;
839fcaba
MT		 436#ifdef CONFIG_INFINIBAND_IPOIB_CM
437 struct ipoib_cm_tx *cm;
438#endif
b63b70d8 439 u8 daddr[INFINIBAND_ALEN];
1da177e4
LT		 440 struct sk_buff_head queue;
441
732a2170 442 struct net_device *dev;
1da177e4
LT		 443
444 struct list_head list;
b63b70d8
SP		 445 struct ipoib_neigh __rcu *hnext;
446 struct rcu_head rcu;
447 atomic_t refcnt;
448 unsigned long alive;
1da177e4
LT		 449};
450
bc7b3a36
SM		 451#define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
452#define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
453
b63b70d8
SP		 454void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
455static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
1da177e4 456{
b63b70d8
SP		 457 if (atomic_dec_and_test(&neigh->refcnt))
458 ipoib_neigh_dtor(neigh);
1da177e4 459}
b63b70d8
SP		 460struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
461struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
732a2170 462 struct net_device *dev);
b63b70d8
SP		 463void ipoib_neigh_free(struct ipoib_neigh *neigh);
464void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
d2e0655e 465
1da177e4
LT		 466extern struct workqueue_struct *ipoib_workqueue;
467
468/* functions */
469
bea3348e 470int ipoib_poll(struct napi_struct *napi, int budget);
1da177e4 471void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
57ce41d1 472void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
1da177e4
LT		 473
474struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
475 struct ib_pd *pd, struct ib_ah_attr *attr);
476void ipoib_free_ah(struct kref *kref);
477static inline void ipoib_put_ah(struct ipoib_ah *ah)
478{
479 kref_put(&ah->ref, ipoib_free_ah);
480}
8ae5a8a2 481int ipoib_open(struct net_device *dev);
1da177e4 482int ipoib_add_pkey_attr(struct net_device *dev);
335a64a5 483int ipoib_add_umcast_attr(struct net_device *dev);
1da177e4
LT		 484
485void ipoib_send(struct net_device *dev, struct sk_buff *skb,
486 struct ipoib_ah *address, u32 qpn);
c4028958 487void ipoib_reap_ah(struct work_struct *work);
1da177e4 488
546481c2 489struct ipoib_path *__path_find(struct net_device *dev, void *gid);
ee1e2c82 490void ipoib_mark_paths_invalid(struct net_device *dev);
1da177e4 491void ipoib_flush_paths(struct net_device *dev);
3b561130 492int ipoib_check_sm_sendonly_fullmember_support(struct ipoib_dev_priv *priv);
1da177e4
LT		 493struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
494
495int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
ee1e2c82
MS		 496void ipoib_ib_dev_flush_light(struct work_struct *work);
497void ipoib_ib_dev_flush_normal(struct work_struct *work);
498void ipoib_ib_dev_flush_heavy(struct work_struct *work);
26bbf13c 499void ipoib_pkey_event(struct work_struct *work);
1da177e4
LT		 500void ipoib_ib_dev_cleanup(struct net_device *dev);
501
efc82eee 502int ipoib_ib_dev_open(struct net_device *dev);
1da177e4 503int ipoib_ib_dev_up(struct net_device *dev);
dfc0e555
ZY		 504void ipoib_ib_dev_down(struct net_device *dev);
505void ipoib_ib_dev_stop(struct net_device *dev);
db84f880 506void ipoib_pkey_dev_check_presence(struct net_device *dev);
1da177e4
LT		 507
508int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
509void ipoib_dev_cleanup(struct net_device *dev);
510
c4028958 511void ipoib_mcast_join_task(struct work_struct *work);
e8224e4b 512void ipoib_mcast_carrier_on_task(struct work_struct *work);
b63b70d8 513void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
1da177e4 514
c4028958 515void ipoib_mcast_restart_task(struct work_struct *work);
1da177e4 516int ipoib_mcast_start_thread(struct net_device *dev);
efc82eee 517int ipoib_mcast_stop_thread(struct net_device *dev);
1da177e4
LT		 518
519void ipoib_mcast_dev_down(struct net_device *dev);
520void ipoib_mcast_dev_flush(struct net_device *dev);
521
c4268778
YS		 522int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
523void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
524 struct ipoib_tx_buf *tx_req);
525
526static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
527 struct ipoib_tx_buf *tx_req)
528{
529 int i, off;
530 struct sk_buff *skb = tx_req->skb;
531 skb_frag_t *frags = skb_shinfo(skb)->frags;
532 int nr_frags = skb_shinfo(skb)->nr_frags;
533 u64 *mapping = tx_req->mapping;
534
535 if (skb_headlen(skb)) {
536 priv->tx_sge[0].addr = mapping[0];
537 priv->tx_sge[0].length = skb_headlen(skb);
538 off = 1;
539 } else
540 off = 0;
541
542 for (i = 0; i < nr_frags; ++i) {
543 priv->tx_sge[i + off].addr = mapping[i + off];
544 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
545 }
e622f2f4 546 priv->tx_wr.wr.num_sge = nr_frags + off;
c4268778
YS		 547}
548
8ae5a8a2 549#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1da177e4 550struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
1da177e4
LT		 551int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
552void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
553 union ib_gid *gid,
554 unsigned long *created,
555 unsigned int *queuelen,
556 unsigned int *complete,
557 unsigned int *send_only);
1732b0ef
RD		 558
559struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
560int ipoib_path_iter_next(struct ipoib_path_iter *iter);
561void ipoib_path_iter_read(struct ipoib_path_iter *iter,
562 struct ipoib_path *path);
8ae5a8a2 563#endif
1da177e4
LT		 564
565int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
d0de1362 566 union ib_gid *mgid, int set_qkey);
50be28de 567void ipoib_mcast_remove_list(struct list_head *remove_list);
432c55ff
CL		 568void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
569 struct list_head *remove_list);
1da177e4 570
5b6810e0 571int ipoib_init_qp(struct net_device *dev);
1da177e4
LT		 572int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
573void ipoib_transport_dev_cleanup(struct net_device *dev);
574
575void ipoib_event(struct ib_event_handler *handler,
576 struct ib_event *record);
577
578int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
579int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
580
9baa0b03
OG		 581int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
582 u16 pkey, int child_type);
583
584int __init ipoib_netlink_init(void);
585void __exit ipoib_netlink_fini(void);
586
862096a8
OG		 587void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
588int ipoib_set_mode(struct net_device *dev, const char *buf);
589
9baa0b03
OG		 590void ipoib_setup(struct net_device *dev);
591
db84f880 592void ipoib_pkey_open(struct ipoib_dev_priv *priv);
2dfbfc37 593void ipoib_drain_cq(struct net_device *dev);
1da177e4 594
82c24c18 595void ipoib_set_ethtool_ops(struct net_device *dev);
f7534f45 596void ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
82c24c18 597
2337f809
RD		 598#define IPOIB_FLAGS_RC 0x80
599#define IPOIB_FLAGS_UC 0x40
839fcaba
MT		 600
601/* We don't support UC connections at the moment */
602#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
603
71d9c5f9
RD		 604#ifdef CONFIG_INFINIBAND_IPOIB_CM
605
68e995a2
PS		 606extern int ipoib_max_conn_qp;
607
839fcaba
MT		 608static inline int ipoib_cm_admin_enabled(struct net_device *dev)
609{
610 struct ipoib_dev_priv *priv = netdev_priv(dev);
611 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
612 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
613}
614
b63b70d8 615static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
839fcaba
MT		 616{
617 struct ipoib_dev_priv *priv = netdev_priv(dev);
b63b70d8 618 return IPOIB_CM_SUPPORTED(hwaddr) &&
839fcaba
MT		 619 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
620}
621
622static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
623
624{
625 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
626}
627
628static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
629{
630 return neigh->cm;
631}
632
633static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
634{
635 neigh->cm = tx;
636}
637
68e995a2
PS		 638static inline int ipoib_cm_has_srq(struct net_device *dev)
639{
640 struct ipoib_dev_priv *priv = netdev_priv(dev);
641 return !!priv->cm.srq;
642}
643
586a6934
PS		 644static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
645{
646 struct ipoib_dev_priv *priv = netdev_priv(dev);
647 return priv->cm.max_cm_mtu;
648}
649
839fcaba
MT		 650void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
651int ipoib_cm_dev_open(struct net_device *dev);
652void ipoib_cm_dev_stop(struct net_device *dev);
653int ipoib_cm_dev_init(struct net_device *dev);
654int ipoib_cm_add_mode_attr(struct net_device *dev);
655void ipoib_cm_dev_cleanup(struct net_device *dev);
656struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
657 struct ipoib_neigh *neigh);
658void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
2337f809 659void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 660 unsigned int mtu);
661void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
1b524963 662void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
839fcaba
MT		 663#else
664
665struct ipoib_cm_tx;
666
68e995a2
PS		 667#define ipoib_max_conn_qp 0
668
839fcaba
MT		 669static inline int ipoib_cm_admin_enabled(struct net_device *dev)
670{
671 return 0;
672}
b63b70d8 673static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
839fcaba
MT		 674
675{
676 return 0;
677}
678
679static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
680
681{
682 return 0;
683}
684
685static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
686{
687 return NULL;
688}
689
690static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
691{
692}
693
68e995a2
PS		 694static inline int ipoib_cm_has_srq(struct net_device *dev)
695{
696 return 0;
697}
698
586a6934
PS		 699static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
700{
701 return 0;
702}
703
839fcaba
MT		 704static inline
705void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
706{
707 return;
708}
709
710static inline
711int ipoib_cm_dev_open(struct net_device *dev)
712{
713 return 0;
714}
715
716static inline
717void ipoib_cm_dev_stop(struct net_device *dev)
718{
719 return;
720}
721
722static inline
723int ipoib_cm_dev_init(struct net_device *dev)
724{
725 return -ENOSYS;
726}
727
728static inline
729void ipoib_cm_dev_cleanup(struct net_device *dev)
730{
731 return;
732}
733
734static inline
735struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
736 struct ipoib_neigh *neigh)
737{
738 return NULL;
739}
740
741static inline
742void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
743{
744 return;
745}
746
747static inline
748int ipoib_cm_add_mode_attr(struct net_device *dev)
749{
750 return 0;
751}
752
2337f809 753static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 754 unsigned int mtu)
755{
756 dev_kfree_skb_any(skb);
757}
758
759static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
760{
761}
762
1b524963
MT		 763static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
764{
765}
839fcaba
MT		 766#endif
767
1da177e4 768#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1732b0ef
RD		 769void ipoib_create_debug_files(struct net_device *dev);
770void ipoib_delete_debug_files(struct net_device *dev);
1da177e4
LT		 771int ipoib_register_debugfs(void);
772void ipoib_unregister_debugfs(void);
773#else
1732b0ef
RD		 774static inline void ipoib_create_debug_files(struct net_device *dev) { }
775static inline void ipoib_delete_debug_files(struct net_device *dev) { }
1da177e4
LT		 776static inline int ipoib_register_debugfs(void) { return 0; }
777static inline void ipoib_unregister_debugfs(void) { }
778#endif
779
1da177e4
LT		 780#define ipoib_printk(level, priv, format, arg...) \
781 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
782#define ipoib_warn(priv, format, arg...) \
32f7451d 783do { \
784 static DEFINE_RATELIMIT_STATE(_rs, \
785 10 * HZ /*10 seconds */, \
786 100); \
787 if (__ratelimit(&_rs)) \
788 ipoib_printk(KERN_WARNING, priv, format , ## arg);\
789} while (0)
1da177e4 790
0f485251
SM		 791extern int ipoib_sendq_size;
792extern int ipoib_recvq_size;
1da177e4 793
c1a0b23b
MT		 794extern struct ib_sa_client ipoib_sa_client;
795
1da177e4
LT		 796#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
797extern int ipoib_debug_level;
798
799#define ipoib_dbg(priv, format, arg...) \
2337f809 800 do { \
1da177e4
LT		 801 if (ipoib_debug_level > 0) \
802 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
803 } while (0)
804#define ipoib_dbg_mcast(priv, format, arg...) \
2337f809 805 do { \
1da177e4
LT		 806 if (mcast_debug_level > 0) \
807 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
808 } while (0)
809#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
810#define ipoib_dbg(priv, format, arg...) \
811 do { (void) (priv); } while (0)
812#define ipoib_dbg_mcast(priv, format, arg...) \
813 do { (void) (priv); } while (0)
814#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
815
816#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
817#define ipoib_dbg_data(priv, format, arg...) \
2337f809 818 do { \
1da177e4
LT		 819 if (data_debug_level > 0) \
820 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
821 } while (0)
822#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
823#define ipoib_dbg_data(priv, format, arg...) \
824 do { (void) (priv); } while (0)
825#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
826
839fcaba
MT		 827#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
828
4b48680b
YB		 829extern const char ipoib_driver_version[];
830
1da177e4 831#endif /* _IPOIB_H */
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