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diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
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1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 * $Id: ipoib.h 1358 2004-12-17 22:00:11Z roland $
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>
42#include <linux/pci.h>
43#include <linux/config.h>
44#include <linux/kref.h>
45#include <linux/if_infiniband.h>
46
47#include <net/neighbour.h>
48
49#include <asm/atomic.h>
50#include <asm/semaphore.h>
51
52#include <ib_verbs.h>
53#include <ib_pack.h>
54#include <ib_sa.h>
55
56/* constants */
57
58enum {
59 IPOIB_PACKET_SIZE = 2048,
60 IPOIB_BUF_SIZE = IPOIB_PACKET_SIZE + IB_GRH_BYTES,
61
62 IPOIB_ENCAP_LEN = 4,
63
64 IPOIB_RX_RING_SIZE = 128,
65 IPOIB_TX_RING_SIZE = 64,
66
67 IPOIB_NUM_WC = 4,
68
69 IPOIB_MAX_PATH_REC_QUEUE = 3,
70 IPOIB_MAX_MCAST_QUEUE = 3,
71
72 IPOIB_FLAG_OPER_UP = 0,
73 IPOIB_FLAG_ADMIN_UP = 1,
74 IPOIB_PKEY_ASSIGNED = 2,
75 IPOIB_PKEY_STOP = 3,
76 IPOIB_FLAG_SUBINTERFACE = 4,
77 IPOIB_MCAST_RUN = 5,
78 IPOIB_STOP_REAPER = 6,
79
80 IPOIB_MAX_BACKOFF_SECONDS = 16,
81
82 IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
83 IPOIB_MCAST_FLAG_SENDONLY = 1,
84 IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */
85 IPOIB_MCAST_FLAG_ATTACHED = 3,
86};
87
88/* structs */
89
90struct ipoib_header {
91 u16 proto;
92 u16 reserved;
93};
94
95struct ipoib_pseudoheader {
96 u8 hwaddr[INFINIBAND_ALEN];
97};
98
99struct ipoib_mcast;
100
101struct ipoib_buf {
102 struct sk_buff *skb;
103 DECLARE_PCI_UNMAP_ADDR(mapping)
104};
105
106/*
107 * Device private locking: tx_lock protects members used in TX fast
108 * path (and we use LLTX so upper layers don't do extra locking).
109 * lock protects everything else. lock nests inside of tx_lock (ie
110 * tx_lock must be acquired first if needed).
111 */
112struct ipoib_dev_priv {
113 spinlock_t lock;
114
115 struct net_device *dev;
116
117 unsigned long flags;
118
119 struct semaphore mcast_mutex;
120 struct semaphore vlan_mutex;
121
122 struct rb_root path_tree;
123 struct list_head path_list;
124
125 struct ipoib_mcast *broadcast;
126 struct list_head multicast_list;
127 struct rb_root multicast_tree;
128
129 struct work_struct pkey_task;
130 struct work_struct mcast_task;
131 struct work_struct flush_task;
132 struct work_struct restart_task;
133 struct work_struct ah_reap_task;
134
135 struct ib_device *ca;
136 u8 port;
137 u16 pkey;
138 struct ib_pd *pd;
139 struct ib_mr *mr;
140 struct ib_cq *cq;
141 struct ib_qp *qp;
142 u32 qkey;
143
144 union ib_gid local_gid;
145 u16 local_lid;
146 u8 local_rate;
147
148 unsigned int admin_mtu;
149 unsigned int mcast_mtu;
150
151 struct ipoib_buf *rx_ring;
152
153 spinlock_t tx_lock;
154 struct ipoib_buf *tx_ring;
155 unsigned tx_head;
156 unsigned tx_tail;
157 struct ib_sge tx_sge;
158 struct ib_send_wr tx_wr;
159
160 struct ib_wc ibwc[IPOIB_NUM_WC];
161
162 struct list_head dead_ahs;
163
164 struct ib_event_handler event_handler;
165
166 struct net_device_stats stats;
167
168 struct net_device *parent;
169 struct list_head child_intfs;
170 struct list_head list;
171
172#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
173 struct list_head fs_list;
174 struct dentry *mcg_dentry;
175#endif
176};
177
178struct ipoib_ah {
179 struct net_device *dev;
180 struct ib_ah *ah;
181 struct list_head list;
182 struct kref ref;
183 unsigned last_send;
184};
185
186struct ipoib_path {
187 struct net_device *dev;
188 struct ib_sa_path_rec pathrec;
189 struct ipoib_ah *ah;
190 struct sk_buff_head queue;
191
192 struct list_head neigh_list;
193
194 int query_id;
195 struct ib_sa_query *query;
196 struct completion done;
197
198 struct rb_node rb_node;
199 struct list_head list;
200};
201
202struct ipoib_neigh {
203 struct ipoib_ah *ah;
204 struct sk_buff_head queue;
205
206 struct neighbour *neighbour;
207
208 struct list_head list;
209};
210
211static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
212{
213 return (struct ipoib_neigh **) (neigh->ha + 24 -
214 (offsetof(struct neighbour, ha) & 4));
215}
216
217extern struct workqueue_struct *ipoib_workqueue;
218
219/* functions */
220
221void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
222
223struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
224 struct ib_pd *pd, struct ib_ah_attr *attr);
225void ipoib_free_ah(struct kref *kref);
226static inline void ipoib_put_ah(struct ipoib_ah *ah)
227{
228 kref_put(&ah->ref, ipoib_free_ah);
229}
230
231int ipoib_add_pkey_attr(struct net_device *dev);
232
233void ipoib_send(struct net_device *dev, struct sk_buff *skb,
234 struct ipoib_ah *address, u32 qpn);
235void ipoib_reap_ah(void *dev_ptr);
236
237void ipoib_flush_paths(struct net_device *dev);
238struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
239
240int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
241void ipoib_ib_dev_flush(void *dev);
242void ipoib_ib_dev_cleanup(struct net_device *dev);
243
244int ipoib_ib_dev_open(struct net_device *dev);
245int ipoib_ib_dev_up(struct net_device *dev);
246int ipoib_ib_dev_down(struct net_device *dev);
247int ipoib_ib_dev_stop(struct net_device *dev);
248
249int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
250void ipoib_dev_cleanup(struct net_device *dev);
251
252void ipoib_mcast_join_task(void *dev_ptr);
253void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
254 struct sk_buff *skb);
255
256void ipoib_mcast_restart_task(void *dev_ptr);
257int ipoib_mcast_start_thread(struct net_device *dev);
258int ipoib_mcast_stop_thread(struct net_device *dev);
259
260void ipoib_mcast_dev_down(struct net_device *dev);
261void ipoib_mcast_dev_flush(struct net_device *dev);
262
263struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
264void ipoib_mcast_iter_free(struct ipoib_mcast_iter *iter);
265int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
266void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
267 union ib_gid *gid,
268 unsigned long *created,
269 unsigned int *queuelen,
270 unsigned int *complete,
271 unsigned int *send_only);
272
273int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
274 union ib_gid *mgid);
275int ipoib_mcast_detach(struct net_device *dev, u16 mlid,
276 union ib_gid *mgid);
277
278int ipoib_qp_create(struct net_device *dev);
279int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
280void ipoib_transport_dev_cleanup(struct net_device *dev);
281
282void ipoib_event(struct ib_event_handler *handler,
283 struct ib_event *record);
284
285int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
286int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
287
288void ipoib_pkey_poll(void *dev);
289int ipoib_pkey_dev_delay_open(struct net_device *dev);
290
291#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
292int ipoib_create_debug_file(struct net_device *dev);
293void ipoib_delete_debug_file(struct net_device *dev);
294int ipoib_register_debugfs(void);
295void ipoib_unregister_debugfs(void);
296#else
297static inline int ipoib_create_debug_file(struct net_device *dev) { return 0; }
298static inline void ipoib_delete_debug_file(struct net_device *dev) { }
299static inline int ipoib_register_debugfs(void) { return 0; }
300static inline void ipoib_unregister_debugfs(void) { }
301#endif
302
303
304#define ipoib_printk(level, priv, format, arg...) \
305 printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
306#define ipoib_warn(priv, format, arg...) \
307 ipoib_printk(KERN_WARNING, priv, format , ## arg)
308
309
310#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
311extern int ipoib_debug_level;
312
313#define ipoib_dbg(priv, format, arg...) \
314 do { \
315 if (ipoib_debug_level > 0) \
316 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
317 } while (0)
318#define ipoib_dbg_mcast(priv, format, arg...) \
319 do { \
320 if (mcast_debug_level > 0) \
321 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
322 } while (0)
323#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
324#define ipoib_dbg(priv, format, arg...) \
325 do { (void) (priv); } while (0)
326#define ipoib_dbg_mcast(priv, format, arg...) \
327 do { (void) (priv); } while (0)
328#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
329
330#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
331#define ipoib_dbg_data(priv, format, arg...) \
332 do { \
333 if (data_debug_level > 0) \
334 ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
335 } while (0)
336#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
337#define ipoib_dbg_data(priv, format, arg...) \
338 do { (void) (priv); } while (0)
339#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
340
341
342#define IPOIB_GID_FMT "%x:%x:%x:%x:%x:%x:%x:%x"
343
344#define IPOIB_GID_ARG(gid) be16_to_cpup((__be16 *) ((gid).raw + 0)), \
345 be16_to_cpup((__be16 *) ((gid).raw + 2)), \
346 be16_to_cpup((__be16 *) ((gid).raw + 4)), \
347 be16_to_cpup((__be16 *) ((gid).raw + 6)), \
348 be16_to_cpup((__be16 *) ((gid).raw + 8)), \
349 be16_to_cpup((__be16 *) ((gid).raw + 10)), \
350 be16_to_cpup((__be16 *) ((gid).raw + 12)), \
351 be16_to_cpup((__be16 *) ((gid).raw + 14))
352
353#endif /* _IPOIB_H */
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