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IB/core: Fix use after free in send_leave function
[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,
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,
2866196f 83 IPOIB_MAX_MCAST_QUEUE = 64,
2337f809
RD		 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,
492a7e67
MB		 95 IPOIB_FLAG_DEV_ADDR_SET = 13,
96 IPOIB_FLAG_DEV_ADDR_CTRL = 14,
198b12f7 97 IPOIB_FLAG_GOING_DOWN = 15,
1da177e4
LT		 98
99 IPOIB_MAX_BACKOFF_SECONDS = 16,
100
2337f809 101 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
1da177e4 102 IPOIB_MCAST_FLAG_SENDONLY = 1,
69911416
DL		 103 /*
104 * For IPOIB_MCAST_FLAG_BUSY
105 * When set, in flight join and mcast->mc is unreliable
106 * When clear and mcast->mc IS_ERR_OR_NULL, need to restart or
107 * haven't started yet
108 * When clear and mcast->mc is valid pointer, join was successful
109 */
110 IPOIB_MCAST_FLAG_BUSY = 2,
1da177e4 111 IPOIB_MCAST_FLAG_ATTACHED = 3,
f56bcd80
EC		 112
113 MAX_SEND_CQE = 16,
f89271da 114 IPOIB_CM_COPYBREAK = 256,
9baa0b03
OG		 115
116 IPOIB_NON_CHILD = 0,
117 IPOIB_LEGACY_CHILD = 1,
118 IPOIB_RTNL_CHILD = 2,
1da177e4
LT		 119};
120
839fcaba
MT		 121#define IPOIB_OP_RECV (1ul << 31)
122#ifdef CONFIG_INFINIBAND_IPOIB_CM
1b524963 123#define IPOIB_OP_CM (1ul << 30)
839fcaba 124#else
1b524963 125#define IPOIB_OP_CM (0)
839fcaba
MT		 126#endif
127
9d1ad66e
SP		 128#define IPOIB_QPN_MASK ((__force u32) cpu_to_be32(0xFFFFFF))
129
1da177e4
LT		 130/* structs */
131
132struct ipoib_header {
97f52eb4
SH		 133 __be16 proto;
134 u16 reserved;
1da177e4
LT		 135};
136
936d7de3
RD		 137struct ipoib_cb {
138 struct qdisc_skb_cb qdisc_cb;
139 u8 hwaddr[INFINIBAND_ALEN];
1da177e4
LT		 140};
141
b49fe362
ED		 142static inline struct ipoib_cb *ipoib_skb_cb(const struct sk_buff *skb)
143{
144 BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct ipoib_cb));
145 return (struct ipoib_cb *)skb->cb;
146}
147
81668838
SH		 148/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
149struct ipoib_mcast {
150 struct ib_sa_mcmember_rec mcmember;
151 struct ib_sa_multicast *mc;
2337f809 152 struct ipoib_ah *ah;
81668838
SH		 153
154 struct rb_node rb_node;
155 struct list_head list;
156
157 unsigned long created;
158 unsigned long backoff;
69911416 159 unsigned long delay_until;
81668838
SH		 160
161 unsigned long flags;
162 unsigned char logcount;
163
164 struct list_head neigh_list;
165
166 struct sk_buff_head pkt_queue;
167
168 struct net_device *dev;
a9c8ba58 169 struct completion done;
81668838 170};
1da177e4 171
1993d683
RD		 172struct ipoib_rx_buf {
173 struct sk_buff *skb;
bc7b3a36 174 u64 mapping[IPOIB_UD_RX_SG];
1993d683
RD		 175};
176
177struct ipoib_tx_buf {
1da177e4 178 struct sk_buff *skb;
7143740d 179 u64 mapping[MAX_SKB_FRAGS + 1];
1da177e4
LT		 180};
181
e112373f
EC		 182struct ipoib_cm_tx_buf {
183 struct sk_buff *skb;
184 u64 mapping;
185};
186
839fcaba
MT		 187struct ib_cm_id;
188
189struct ipoib_cm_data {
190 __be32 qpn; /* High byte MUST be ignored on receive */
191 __be32 mtu;
192};
193
518b1646
MT		 194/*
195 * Quoting 10.3.1 Queue Pair and EE Context States:
196 *
197 * Note, for QPs that are associated with an SRQ, the Consumer should take the
198 * QP through the Error State before invoking a Destroy QP or a Modify QP to the
199 * Reset State. The Consumer may invoke the Destroy QP without first performing
200 * a Modify QP to the Error State and waiting for the Affiliated Asynchronous
201 * Last WQE Reached Event. However, if the Consumer does not wait for the
202 * Affiliated Asynchronous Last WQE Reached Event, then WQE and Data Segment
203 * leakage may occur. Therefore, it is good programming practice to tear down a
204 * QP that is associated with an SRQ by using the following process:
205 *
206 * - Put the QP in the Error State
207 * - Wait for the Affiliated Asynchronous Last WQE Reached Event;
208 * - either:
209 * drain the CQ by invoking the Poll CQ verb and either wait for CQ
210 * to be empty or the number of Poll CQ operations has exceeded
211 * CQ capacity size;
212 * - or
213 * post another WR that completes on the same CQ and wait for this
214 * WR to return as a WC;
215 * - and then invoke a Destroy QP or Reset QP.
216 *
217 * We use the second option and wait for a completion on the
ec56dc0b 218 * same CQ before destroying QPs attached to our SRQ.
518b1646
MT		 219 */
220
221enum ipoib_cm_state {
222 IPOIB_CM_RX_LIVE,
223 IPOIB_CM_RX_ERROR, /* Ignored by stale task */
224 IPOIB_CM_RX_FLUSH /* Last WQE Reached event observed */
225};
226
839fcaba 227struct ipoib_cm_rx {
2337f809
RD		 228 struct ib_cm_id *id;
229 struct ib_qp *qp;
68e995a2 230 struct ipoib_cm_rx_buf *rx_ring;
2337f809
RD		 231 struct list_head list;
232 struct net_device *dev;
233 unsigned long jiffies;
234 enum ipoib_cm_state state;
68e995a2 235 int recv_count;
839fcaba
MT		 236};
237
238struct ipoib_cm_tx {
2337f809
RD		 239 struct ib_cm_id *id;
240 struct ib_qp *qp;
839fcaba
MT		 241 struct list_head list;
242 struct net_device *dev;
243 struct ipoib_neigh *neigh;
244 struct ipoib_path *path;
c4268778 245 struct ipoib_tx_buf *tx_ring;
2337f809
RD		 246 unsigned tx_head;
247 unsigned tx_tail;
248 unsigned long flags;
249 u32 mtu;
78a50a5e 250 unsigned max_send_sge;
839fcaba
MT		 251};
252
253struct ipoib_cm_rx_buf {
254 struct sk_buff *skb;
255 u64 mapping[IPOIB_CM_RX_SG];
256};
257
258struct ipoib_cm_dev_priv {
2337f809 259 struct ib_srq *srq;
839fcaba 260 struct ipoib_cm_rx_buf *srq_ring;
2337f809
RD		 261 struct ib_cm_id *id;
262 struct list_head passive_ids; /* state: LIVE */
263 struct list_head rx_error_list; /* state: ERROR */
264 struct list_head rx_flush_list; /* state: FLUSH, drain not started */
265 struct list_head rx_drain_list; /* state: FLUSH, drain started */
266 struct list_head rx_reap_list; /* state: FLUSH, drain done */
839fcaba
MT		 267 struct work_struct start_task;
268 struct work_struct reap_task;
269 struct work_struct skb_task;
518b1646 270 struct work_struct rx_reap_task;
839fcaba
MT		 271 struct delayed_work stale_task;
272 struct sk_buff_head skb_queue;
2337f809
RD		 273 struct list_head start_list;
274 struct list_head reap_list;
275 struct ib_wc ibwc[IPOIB_NUM_WC];
276 struct ib_sge rx_sge[IPOIB_CM_RX_SG];
839fcaba 277 struct ib_recv_wr rx_wr;
68e995a2 278 int nonsrq_conn_qp;
586a6934
PS		 279 int max_cm_mtu;
280 int num_frags;
839fcaba
MT		 281};
282
28d52b3c
EC		 283struct ipoib_ethtool_st {
284 u16 coalesce_usecs;
285 u16 max_coalesced_frames;
286};
287
66172c09
SP		 288struct ipoib_neigh_table;
289
b63b70d8 290struct ipoib_neigh_hash {
66172c09 291 struct ipoib_neigh_table *ntbl;
b63b70d8
SP		 292 struct ipoib_neigh __rcu **buckets;
293 struct rcu_head rcu;
294 u32 mask;
295 u32 size;
296};
297
298struct ipoib_neigh_table {
299 struct ipoib_neigh_hash __rcu *htbl;
b63b70d8
SP		 300 atomic_t entries;
301 struct completion flushed;
66172c09 302 struct completion deleted;
b63b70d8
SP		 303};
304
2c010730
ES		 305struct ipoib_qp_state_validate {
306 struct work_struct work;
307 struct ipoib_dev_priv *priv;
308};
309
1da177e4 310/*
943c246e
RD		 311 * Device private locking: network stack tx_lock protects members used
312 * in TX fast path, lock protects everything else. lock nests inside
313 * of tx_lock (ie tx_lock must be acquired first if needed).
1da177e4
LT		 314 */
315struct ipoib_dev_priv {
316 spinlock_t lock;
317
318 struct net_device *dev;
319
bea3348e
SH		 320 struct napi_struct napi;
321
1da177e4
LT		 322 unsigned long flags;
323
f47944cc 324 struct rw_semaphore vlan_rwsem;
1da177e4
LT		 325
326 struct rb_root path_tree;
327 struct list_head path_list;
328
b63b70d8
SP		 329 struct ipoib_neigh_table ntbl;
330
1da177e4
LT		 331 struct ipoib_mcast *broadcast;
332 struct list_head multicast_list;
333 struct rb_root multicast_tree;
334
0b39578b 335 struct workqueue_struct *wq;
c4028958 336 struct delayed_work mcast_task;
e8224e4b 337 struct work_struct carrier_on_task;
ee1e2c82
MS		 338 struct work_struct flush_light;
339 struct work_struct flush_normal;
340 struct work_struct flush_heavy;
1da177e4 341 struct work_struct restart_task;
c4028958 342 struct delayed_work ah_reap_task;
b63b70d8 343 struct delayed_work neigh_reap_task;
1da177e4 344 struct ib_device *ca;
2337f809
RD		 345 u8 port;
346 u16 pkey;
347 u16 pkey_index;
348 struct ib_pd *pd;
f56bcd80
EC		 349 struct ib_cq *recv_cq;
350 struct ib_cq *send_cq;
2337f809
RD		 351 struct ib_qp *qp;
352 u32 qkey;
1da177e4
LT		 353
354 union ib_gid local_gid;
2337f809 355 u16 local_lid;
1da177e4
LT		 356
357 unsigned int admin_mtu;
358 unsigned int mcast_mtu;
bc7b3a36 359 unsigned int max_ib_mtu;
1da177e4 360
1993d683 361 struct ipoib_rx_buf *rx_ring;
1da177e4 362
1993d683 363 struct ipoib_tx_buf *tx_ring;
2337f809
RD		 364 unsigned tx_head;
365 unsigned tx_tail;
7143740d 366 struct ib_sge tx_sge[MAX_SKB_FRAGS + 1];
e622f2f4 367 struct ib_ud_wr tx_wr;
2337f809 368 unsigned tx_outstanding;
f56bcd80 369 struct ib_wc send_wc[MAX_SEND_CQE];
1da177e4 370
bc7b3a36
SM		 371 struct ib_recv_wr rx_wr;
372 struct ib_sge rx_sge[IPOIB_UD_RX_SG];
373
1da177e4
LT		 374 struct ib_wc ibwc[IPOIB_NUM_WC];
375
376 struct list_head dead_ahs;
377
378 struct ib_event_handler event_handler;
379
1da177e4
LT		 380 struct net_device *parent;
381 struct list_head child_intfs;
382 struct list_head list;
9baa0b03 383 int child_type;
1da177e4 384
839fcaba
MT		 385#ifdef CONFIG_INFINIBAND_IPOIB_CM
386 struct ipoib_cm_dev_priv cm;
387#endif
388
1da177e4
LT		 389#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
390 struct list_head fs_list;
391 struct dentry *mcg_dentry;
1732b0ef 392 struct dentry *path_dentry;
1da177e4 393#endif
fb532d6a 394 u64 hca_caps;
28d52b3c 395 struct ipoib_ethtool_st ethtool;
57ce41d1 396 struct timer_list poll_timer;
78a50a5e 397 unsigned max_send_sge;
3b561130 398 bool sm_fullmember_sendonly_support;
1da177e4
LT		 399};
400
401struct ipoib_ah {
402 struct net_device *dev;
2337f809 403 struct ib_ah *ah;
1da177e4 404 struct list_head list;
2337f809
RD		 405 struct kref ref;
406 unsigned last_send;
1da177e4
LT		 407};
408
409struct ipoib_path {
410 struct net_device *dev;
411 struct ib_sa_path_rec pathrec;
412 struct ipoib_ah *ah;
413 struct sk_buff_head queue;
414
415 struct list_head neigh_list;
416
2337f809 417 int query_id;
1da177e4
LT		 418 struct ib_sa_query *query;
419 struct completion done;
420
2337f809 421 struct rb_node rb_node;
1da177e4 422 struct list_head list;
ee1e2c82 423 int valid;
1da177e4
LT		 424};
425
426struct ipoib_neigh {
427 struct ipoib_ah *ah;
839fcaba
MT		 428#ifdef CONFIG_INFINIBAND_IPOIB_CM
429 struct ipoib_cm_tx *cm;
430#endif
b63b70d8 431 u8 daddr[INFINIBAND_ALEN];
1da177e4
LT		 432 struct sk_buff_head queue;
433
732a2170 434 struct net_device *dev;
1da177e4
LT		 435
436 struct list_head list;
b63b70d8
SP		 437 struct ipoib_neigh __rcu *hnext;
438 struct rcu_head rcu;
439 atomic_t refcnt;
440 unsigned long alive;
1da177e4
LT		 441};
442
bc7b3a36
SM		 443#define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN)
444#define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES)
445
b63b70d8
SP		 446void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
447static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
1da177e4 448{
b63b70d8
SP		 449 if (atomic_dec_and_test(&neigh->refcnt))
450 ipoib_neigh_dtor(neigh);
1da177e4 451}
b63b70d8
SP		 452struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
453struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
732a2170 454 struct net_device *dev);
b63b70d8
SP		 455void ipoib_neigh_free(struct ipoib_neigh *neigh);
456void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
d2e0655e 457
1da177e4
LT		 458extern struct workqueue_struct *ipoib_workqueue;
459
460/* functions */
461
bea3348e 462int ipoib_poll(struct napi_struct *napi, int budget);
1da177e4 463void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
57ce41d1 464void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr);
1da177e4
LT		 465
466struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
467 struct ib_pd *pd, struct ib_ah_attr *attr);
468void ipoib_free_ah(struct kref *kref);
469static inline void ipoib_put_ah(struct ipoib_ah *ah)
470{
471 kref_put(&ah->ref, ipoib_free_ah);
472}
8ae5a8a2 473int ipoib_open(struct net_device *dev);
1da177e4 474int ipoib_add_pkey_attr(struct net_device *dev);
335a64a5 475int ipoib_add_umcast_attr(struct net_device *dev);
1da177e4
LT		 476
477void ipoib_send(struct net_device *dev, struct sk_buff *skb,
478 struct ipoib_ah *address, u32 qpn);
c4028958 479void ipoib_reap_ah(struct work_struct *work);
1da177e4 480
ee1e2c82 481void ipoib_mark_paths_invalid(struct net_device *dev);
1da177e4 482void ipoib_flush_paths(struct net_device *dev);
3b561130 483int ipoib_check_sm_sendonly_fullmember_support(struct ipoib_dev_priv *priv);
1da177e4
LT		 484struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
485
486int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
ee1e2c82
MS		 487void ipoib_ib_dev_flush_light(struct work_struct *work);
488void ipoib_ib_dev_flush_normal(struct work_struct *work);
489void ipoib_ib_dev_flush_heavy(struct work_struct *work);
26bbf13c 490void ipoib_pkey_event(struct work_struct *work);
1da177e4
LT		 491void ipoib_ib_dev_cleanup(struct net_device *dev);
492
efc82eee 493int ipoib_ib_dev_open(struct net_device *dev);
1da177e4 494int ipoib_ib_dev_up(struct net_device *dev);
efc82eee
DL		 495int ipoib_ib_dev_down(struct net_device *dev);
496int ipoib_ib_dev_stop(struct net_device *dev);
db84f880 497void ipoib_pkey_dev_check_presence(struct net_device *dev);
1da177e4
LT		 498
499int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
500void ipoib_dev_cleanup(struct net_device *dev);
501
c4028958 502void ipoib_mcast_join_task(struct work_struct *work);
e8224e4b 503void ipoib_mcast_carrier_on_task(struct work_struct *work);
b63b70d8 504void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
1da177e4 505
c4028958 506void ipoib_mcast_restart_task(struct work_struct *work);
1da177e4 507int ipoib_mcast_start_thread(struct net_device *dev);
efc82eee 508int ipoib_mcast_stop_thread(struct net_device *dev);
1da177e4
LT		 509
510void ipoib_mcast_dev_down(struct net_device *dev);
511void ipoib_mcast_dev_flush(struct net_device *dev);
512
c4268778
YS		 513int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
514void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
515 struct ipoib_tx_buf *tx_req);
516
517static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
518 struct ipoib_tx_buf *tx_req)
519{
520 int i, off;
521 struct sk_buff *skb = tx_req->skb;
522 skb_frag_t *frags = skb_shinfo(skb)->frags;
523 int nr_frags = skb_shinfo(skb)->nr_frags;
524 u64 *mapping = tx_req->mapping;
525
526 if (skb_headlen(skb)) {
527 priv->tx_sge[0].addr = mapping[0];
528 priv->tx_sge[0].length = skb_headlen(skb);
529 off = 1;
530 } else
531 off = 0;
532
533 for (i = 0; i < nr_frags; ++i) {
534 priv->tx_sge[i + off].addr = mapping[i + off];
535 priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
536 }
e622f2f4 537 priv->tx_wr.wr.num_sge = nr_frags + off;
c4268778
YS		 538}
539
8ae5a8a2 540#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1da177e4 541struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
1da177e4
LT		 542int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
543void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
544 union ib_gid *gid,
545 unsigned long *created,
546 unsigned int *queuelen,
547 unsigned int *complete,
548 unsigned int *send_only);
1732b0ef
RD		 549
550struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
551int ipoib_path_iter_next(struct ipoib_path_iter *iter);
552void ipoib_path_iter_read(struct ipoib_path_iter *iter,
553 struct ipoib_path *path);
8ae5a8a2 554#endif
1da177e4
LT		 555
556int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
d0de1362 557 union ib_gid *mgid, int set_qkey);
50be28de 558void ipoib_mcast_remove_list(struct list_head *remove_list);
432c55ff
CL		 559void ipoib_check_and_add_mcast_sendonly(struct ipoib_dev_priv *priv, u8 *mgid,
560 struct list_head *remove_list);
1da177e4 561
5b6810e0 562int ipoib_init_qp(struct net_device *dev);
1da177e4
LT		 563int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
564void ipoib_transport_dev_cleanup(struct net_device *dev);
565
566void ipoib_event(struct ib_event_handler *handler,
567 struct ib_event *record);
568
569int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
570int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
571
9baa0b03
OG		 572int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
573 u16 pkey, int child_type);
574
575int __init ipoib_netlink_init(void);
576void __exit ipoib_netlink_fini(void);
577
862096a8
OG		 578void ipoib_set_umcast(struct net_device *ndev, int umcast_val);
579int ipoib_set_mode(struct net_device *dev, const char *buf);
580
9baa0b03
OG		 581void ipoib_setup(struct net_device *dev);
582
db84f880 583void ipoib_pkey_open(struct ipoib_dev_priv *priv);
2dfbfc37 584void ipoib_drain_cq(struct net_device *dev);
1da177e4 585
82c24c18 586void ipoib_set_ethtool_ops(struct net_device *dev);
83bb63f6 587int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
82c24c18 588
2337f809
RD		 589#define IPOIB_FLAGS_RC 0x80
590#define IPOIB_FLAGS_UC 0x40
839fcaba
MT		 591
592/* We don't support UC connections at the moment */
593#define IPOIB_CM_SUPPORTED(ha) (ha[0] & (IPOIB_FLAGS_RC))
594
71d9c5f9
RD		 595#ifdef CONFIG_INFINIBAND_IPOIB_CM
596
68e995a2
PS		 597extern int ipoib_max_conn_qp;
598
839fcaba
MT		 599static inline int ipoib_cm_admin_enabled(struct net_device *dev)
600{
601 struct ipoib_dev_priv *priv = netdev_priv(dev);
602 return IPOIB_CM_SUPPORTED(dev->dev_addr) &&
603 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
604}
605
b63b70d8 606static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
839fcaba
MT		 607{
608 struct ipoib_dev_priv *priv = netdev_priv(dev);
b63b70d8 609 return IPOIB_CM_SUPPORTED(hwaddr) &&
839fcaba
MT		 610 test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
611}
612
613static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
614
615{
616 return test_bit(IPOIB_FLAG_OPER_UP, &neigh->cm->flags);
617}
618
619static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
620{
621 return neigh->cm;
622}
623
624static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
625{
626 neigh->cm = tx;
627}
628
68e995a2
PS		 629static inline int ipoib_cm_has_srq(struct net_device *dev)
630{
631 struct ipoib_dev_priv *priv = netdev_priv(dev);
632 return !!priv->cm.srq;
633}
634
586a6934
PS		 635static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
636{
637 struct ipoib_dev_priv *priv = netdev_priv(dev);
638 return priv->cm.max_cm_mtu;
639}
640
839fcaba
MT		 641void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx);
642int ipoib_cm_dev_open(struct net_device *dev);
643void ipoib_cm_dev_stop(struct net_device *dev);
644int ipoib_cm_dev_init(struct net_device *dev);
645int ipoib_cm_add_mode_attr(struct net_device *dev);
646void ipoib_cm_dev_cleanup(struct net_device *dev);
647struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
648 struct ipoib_neigh *neigh);
649void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx);
2337f809 650void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 651 unsigned int mtu);
652void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc);
1b524963 653void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc);
839fcaba
MT		 654#else
655
656struct ipoib_cm_tx;
657
68e995a2
PS		 658#define ipoib_max_conn_qp 0
659
839fcaba
MT		 660static inline int ipoib_cm_admin_enabled(struct net_device *dev)
661{
662 return 0;
663}
b63b70d8 664static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
839fcaba
MT		 665
666{
667 return 0;
668}
669
670static inline int ipoib_cm_up(struct ipoib_neigh *neigh)
671
672{
673 return 0;
674}
675
676static inline struct ipoib_cm_tx *ipoib_cm_get(struct ipoib_neigh *neigh)
677{
678 return NULL;
679}
680
681static inline void ipoib_cm_set(struct ipoib_neigh *neigh, struct ipoib_cm_tx *tx)
682{
683}
684
68e995a2
PS		 685static inline int ipoib_cm_has_srq(struct net_device *dev)
686{
687 return 0;
688}
689
586a6934
PS		 690static inline unsigned int ipoib_cm_max_mtu(struct net_device *dev)
691{
692 return 0;
693}
694
839fcaba
MT		 695static inline
696void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
697{
698 return;
699}
700
701static inline
702int ipoib_cm_dev_open(struct net_device *dev)
703{
704 return 0;
705}
706
707static inline
708void ipoib_cm_dev_stop(struct net_device *dev)
709{
710 return;
711}
712
713static inline
714int ipoib_cm_dev_init(struct net_device *dev)
715{
716 return -ENOSYS;
717}
718
719static inline
720void ipoib_cm_dev_cleanup(struct net_device *dev)
721{
722 return;
723}
724
725static inline
726struct ipoib_cm_tx *ipoib_cm_create_tx(struct net_device *dev, struct ipoib_path *path,
727 struct ipoib_neigh *neigh)
728{
729 return NULL;
730}
731
732static inline
733void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
734{
735 return;
736}
737
738static inline
739int ipoib_cm_add_mode_attr(struct net_device *dev)
740{
741 return 0;
742}
743
2337f809 744static inline void ipoib_cm_skb_too_long(struct net_device *dev, struct sk_buff *skb,
839fcaba
MT		 745 unsigned int mtu)
746{
747 dev_kfree_skb_any(skb);
748}
749
750static inline void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
751{
752}
753
1b524963
MT		 754static inline void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
755{
756}
839fcaba
MT		 757#endif
758
1da177e4 759#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1732b0ef
RD		 760void ipoib_create_debug_files(struct net_device *dev);
761void ipoib_delete_debug_files(struct net_device *dev);
1da177e4
LT		 762int ipoib_register_debugfs(void);
763void ipoib_unregister_debugfs(void);
764#else
1732b0ef
RD		 765static inline void ipoib_create_debug_files(struct net_device *dev) { }
766static inline void ipoib_delete_debug_files(struct net_device *dev) { }
1da177e4
LT		 767static inline int ipoib_register_debugfs(void) { return 0; }
768static inline void ipoib_unregister_debugfs(void) { }
769#endif
770
1da177e4
LT		 771#define ipoib_printk(level, priv, format, arg...) \
772 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
773#define ipoib_warn(priv, format, arg...) \
774 ipoib_printk(KERN_WARNING, priv, format , ## arg)
775
0f485251
SM		 776extern int ipoib_sendq_size;
777extern int ipoib_recvq_size;
1da177e4 778
c1a0b23b
MT		 779extern struct ib_sa_client ipoib_sa_client;
780
1da177e4
LT		 781#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
782extern int ipoib_debug_level;
783
784#define ipoib_dbg(priv, format, arg...) \
2337f809 785 do { \
1da177e4
LT		 786 if (ipoib_debug_level > 0) \
787 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
788 } while (0)
789#define ipoib_dbg_mcast(priv, format, arg...) \
2337f809 790 do { \
1da177e4
LT		 791 if (mcast_debug_level > 0) \
792 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
793 } while (0)
794#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
795#define ipoib_dbg(priv, format, arg...) \
796 do { (void) (priv); } while (0)
797#define ipoib_dbg_mcast(priv, format, arg...) \
798 do { (void) (priv); } while (0)
799#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
800
801#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
802#define ipoib_dbg_data(priv, format, arg...) \
2337f809 803 do { \
1da177e4
LT		 804 if (data_debug_level > 0) \
805 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
806 } while (0)
807#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
808#define ipoib_dbg_data(priv, format, arg...) \
809 do { (void) (priv); } while (0)
810#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
811
839fcaba
MT		 812#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
813
4b48680b
YB		 814extern const char ipoib_driver_version[];
815
1da177e4 816#endif /* _IPOIB_H */
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