IB/uverbs: Fix alignment of struct ib_uverbs_create_qp_resp
[linux-block.git] / drivers / infiniband / ulp / ipoib / ipoib.h
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1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
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3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
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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.
33 *
34 * $Id: ipoib.h 1358 2004-12-17 22:00:11Z roland $
35 */
36
37#ifndef _IPOIB_H
38#define _IPOIB_H
39
40#include <linux/list.h>
41#include <linux/skbuff.h>
42#include <linux/netdevice.h>
43#include <linux/workqueue.h>
44#include <linux/pci.h>
45#include <linux/config.h>
46#include <linux/kref.h>
47#include <linux/if_infiniband.h>
95ed644f 48#include <linux/mutex.h>
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49
50#include <net/neighbour.h>
51
52#include <asm/atomic.h>
1da177e4 53
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54#include <rdma/ib_verbs.h>
55#include <rdma/ib_pack.h>
56#include <rdma/ib_sa.h>
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57
58/* constants */
59
60enum {
61 IPOIB_PACKET_SIZE = 2048,
62 IPOIB_BUF_SIZE = IPOIB_PACKET_SIZE + IB_GRH_BYTES,
63
64 IPOIB_ENCAP_LEN = 4,
65
66 IPOIB_RX_RING_SIZE = 128,
67 IPOIB_TX_RING_SIZE = 64,
68
69 IPOIB_NUM_WC = 4,
70
71 IPOIB_MAX_PATH_REC_QUEUE = 3,
72 IPOIB_MAX_MCAST_QUEUE = 3,
73
74 IPOIB_FLAG_OPER_UP = 0,
75 IPOIB_FLAG_ADMIN_UP = 1,
76 IPOIB_PKEY_ASSIGNED = 2,
77 IPOIB_PKEY_STOP = 3,
78 IPOIB_FLAG_SUBINTERFACE = 4,
79 IPOIB_MCAST_RUN = 5,
80 IPOIB_STOP_REAPER = 6,
479a0796 81 IPOIB_MCAST_STARTED = 7,
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82
83 IPOIB_MAX_BACKOFF_SECONDS = 16,
84
85 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
86 IPOIB_MCAST_FLAG_SENDONLY = 1,
87 IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */
88 IPOIB_MCAST_FLAG_ATTACHED = 3,
89};
90
91/* structs */
92
93struct ipoib_header {
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94 __be16 proto;
95 u16 reserved;
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96};
97
98struct ipoib_pseudoheader {
99 u8 hwaddr[INFINIBAND_ALEN];
100};
101
102struct ipoib_mcast;
103
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104struct ipoib_rx_buf {
105 struct sk_buff *skb;
106 dma_addr_t mapping;
107};
108
109struct ipoib_tx_buf {
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110 struct sk_buff *skb;
111 DECLARE_PCI_UNMAP_ADDR(mapping)
112};
113
114/*
115 * Device private locking: tx_lock protects members used in TX fast
116 * path (and we use LLTX so upper layers don't do extra locking).
117 * lock protects everything else. lock nests inside of tx_lock (ie
118 * tx_lock must be acquired first if needed).
119 */
120struct ipoib_dev_priv {
121 spinlock_t lock;
122
123 struct net_device *dev;
124
125 unsigned long flags;
126
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127 struct mutex mcast_mutex;
128 struct mutex vlan_mutex;
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129
130 struct rb_root path_tree;
131 struct list_head path_list;
132
133 struct ipoib_mcast *broadcast;
134 struct list_head multicast_list;
135 struct rb_root multicast_tree;
136
137 struct work_struct pkey_task;
138 struct work_struct mcast_task;
139 struct work_struct flush_task;
140 struct work_struct restart_task;
141 struct work_struct ah_reap_task;
142
143 struct ib_device *ca;
144 u8 port;
145 u16 pkey;
146 struct ib_pd *pd;
147 struct ib_mr *mr;
148 struct ib_cq *cq;
149 struct ib_qp *qp;
150 u32 qkey;
151
152 union ib_gid local_gid;
153 u16 local_lid;
154 u8 local_rate;
155
156 unsigned int admin_mtu;
157 unsigned int mcast_mtu;
158
1993d683 159 struct ipoib_rx_buf *rx_ring;
1da177e4 160
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161 spinlock_t tx_lock;
162 struct ipoib_tx_buf *tx_ring;
163 unsigned tx_head;
164 unsigned tx_tail;
165 struct ib_sge tx_sge;
166 struct ib_send_wr tx_wr;
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167
168 struct ib_wc ibwc[IPOIB_NUM_WC];
169
170 struct list_head dead_ahs;
171
172 struct ib_event_handler event_handler;
173
174 struct net_device_stats stats;
175
176 struct net_device *parent;
177 struct list_head child_intfs;
178 struct list_head list;
179
180#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
181 struct list_head fs_list;
182 struct dentry *mcg_dentry;
1732b0ef 183 struct dentry *path_dentry;
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184#endif
185};
186
187struct ipoib_ah {
188 struct net_device *dev;
189 struct ib_ah *ah;
190 struct list_head list;
191 struct kref ref;
192 unsigned last_send;
193};
194
195struct ipoib_path {
196 struct net_device *dev;
197 struct ib_sa_path_rec pathrec;
198 struct ipoib_ah *ah;
199 struct sk_buff_head queue;
200
201 struct list_head neigh_list;
202
203 int query_id;
204 struct ib_sa_query *query;
205 struct completion done;
206
207 struct rb_node rb_node;
208 struct list_head list;
209};
210
211struct ipoib_neigh {
212 struct ipoib_ah *ah;
213 struct sk_buff_head queue;
214
215 struct neighbour *neighbour;
216
217 struct list_head list;
218};
219
220static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
221{
222 return (struct ipoib_neigh **) (neigh->ha + 24 -
223 (offsetof(struct neighbour, ha) & 4));
224}
225
226extern struct workqueue_struct *ipoib_workqueue;
227
228/* functions */
229
230void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
231
232struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
233 struct ib_pd *pd, struct ib_ah_attr *attr);
234void ipoib_free_ah(struct kref *kref);
235static inline void ipoib_put_ah(struct ipoib_ah *ah)
236{
237 kref_put(&ah->ref, ipoib_free_ah);
238}
239
8ae5a8a2 240int ipoib_open(struct net_device *dev);
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241int ipoib_add_pkey_attr(struct net_device *dev);
242
243void ipoib_send(struct net_device *dev, struct sk_buff *skb,
244 struct ipoib_ah *address, u32 qpn);
245void ipoib_reap_ah(void *dev_ptr);
246
247void ipoib_flush_paths(struct net_device *dev);
248struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
249
250int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
251void ipoib_ib_dev_flush(void *dev);
252void ipoib_ib_dev_cleanup(struct net_device *dev);
253
254int ipoib_ib_dev_open(struct net_device *dev);
255int ipoib_ib_dev_up(struct net_device *dev);
256int ipoib_ib_dev_down(struct net_device *dev);
257int ipoib_ib_dev_stop(struct net_device *dev);
258
259int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
260void ipoib_dev_cleanup(struct net_device *dev);
261
262void ipoib_mcast_join_task(void *dev_ptr);
263void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
264 struct sk_buff *skb);
265
266void ipoib_mcast_restart_task(void *dev_ptr);
267int ipoib_mcast_start_thread(struct net_device *dev);
8d2cae06 268int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
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269
270void ipoib_mcast_dev_down(struct net_device *dev);
271void ipoib_mcast_dev_flush(struct net_device *dev);
272
8ae5a8a2 273#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
1da177e4 274struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
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275int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
276void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
277 union ib_gid *gid,
278 unsigned long *created,
279 unsigned int *queuelen,
280 unsigned int *complete,
281 unsigned int *send_only);
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282
283struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
284int ipoib_path_iter_next(struct ipoib_path_iter *iter);
285void ipoib_path_iter_read(struct ipoib_path_iter *iter,
286 struct ipoib_path *path);
8ae5a8a2 287#endif
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288
289int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
290 union ib_gid *mgid);
291int ipoib_mcast_detach(struct net_device *dev, u16 mlid,
292 union ib_gid *mgid);
293
5b6810e0 294int ipoib_init_qp(struct net_device *dev);
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295int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
296void ipoib_transport_dev_cleanup(struct net_device *dev);
297
298void ipoib_event(struct ib_event_handler *handler,
299 struct ib_event *record);
300
301int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
302int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
303
304void ipoib_pkey_poll(void *dev);
305int ipoib_pkey_dev_delay_open(struct net_device *dev);
306
307#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
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308void ipoib_create_debug_files(struct net_device *dev);
309void ipoib_delete_debug_files(struct net_device *dev);
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310int ipoib_register_debugfs(void);
311void ipoib_unregister_debugfs(void);
312#else
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313static inline void ipoib_create_debug_files(struct net_device *dev) { }
314static inline void ipoib_delete_debug_files(struct net_device *dev) { }
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315static inline int ipoib_register_debugfs(void) { return 0; }
316static inline void ipoib_unregister_debugfs(void) { }
317#endif
318
319
320#define ipoib_printk(level, priv, format, arg...) \
321 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
322#define ipoib_warn(priv, format, arg...) \
323 ipoib_printk(KERN_WARNING, priv, format , ## arg)
324
325
326#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
327extern int ipoib_debug_level;
328
329#define ipoib_dbg(priv, format, arg...) \
330 do { \
331 if (ipoib_debug_level > 0) \
332 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
333 } while (0)
334#define ipoib_dbg_mcast(priv, format, arg...) \
335 do { \
336 if (mcast_debug_level > 0) \
337 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
338 } while (0)
339#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
340#define ipoib_dbg(priv, format, arg...) \
341 do { (void) (priv); } while (0)
342#define ipoib_dbg_mcast(priv, format, arg...) \
343 do { (void) (priv); } while (0)
344#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
345
346#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
347#define ipoib_dbg_data(priv, format, arg...) \
348 do { \
349 if (data_debug_level > 0) \
350 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
351 } while (0)
352#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
353#define ipoib_dbg_data(priv, format, arg...) \
354 do { (void) (priv); } while (0)
355#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
356
357
358#define IPOIB_GID_FMT "%x:%x:%x:%x:%x:%x:%x:%x"
359
360#define IPOIB_GID_ARG(gid) be16_to_cpup((__be16 *) ((gid).raw + 0)), \
361 be16_to_cpup((__be16 *) ((gid).raw + 2)), \
362 be16_to_cpup((__be16 *) ((gid).raw + 4)), \
363 be16_to_cpup((__be16 *) ((gid).raw + 6)), \
364 be16_to_cpup((__be16 *) ((gid).raw + 8)), \
365 be16_to_cpup((__be16 *) ((gid).raw + 10)), \
366 be16_to_cpup((__be16 *) ((gid).raw + 12)), \
367 be16_to_cpup((__be16 *) ((gid).raw + 14))
368
369#endif /* _IPOIB_H */