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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. | |
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> |
1da177e4 LT |
49 | |
50 | #include <net/neighbour.h> | |
51 | ||
52 | #include <asm/atomic.h> | |
1da177e4 | 53 | |
a4d61e84 RD |
54 | #include <rdma/ib_verbs.h> |
55 | #include <rdma/ib_pack.h> | |
56 | #include <rdma/ib_sa.h> | |
1da177e4 LT |
57 | |
58 | /* constants */ | |
59 | ||
60 | enum { | |
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, |
1da177e4 LT |
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 | ||
93 | struct ipoib_header { | |
97f52eb4 SH |
94 | __be16 proto; |
95 | u16 reserved; | |
1da177e4 LT |
96 | }; |
97 | ||
98 | struct ipoib_pseudoheader { | |
99 | u8 hwaddr[INFINIBAND_ALEN]; | |
100 | }; | |
101 | ||
102 | struct ipoib_mcast; | |
103 | ||
1993d683 RD |
104 | struct ipoib_rx_buf { |
105 | struct sk_buff *skb; | |
106 | dma_addr_t mapping; | |
107 | }; | |
108 | ||
109 | struct ipoib_tx_buf { | |
1da177e4 LT |
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 | */ | |
120 | struct ipoib_dev_priv { | |
121 | spinlock_t lock; | |
122 | ||
123 | struct net_device *dev; | |
124 | ||
125 | unsigned long flags; | |
126 | ||
95ed644f IM |
127 | struct mutex mcast_mutex; |
128 | struct mutex vlan_mutex; | |
1da177e4 LT |
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 | |
1993d683 RD |
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; | |
1da177e4 LT |
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; |
1da177e4 LT |
184 | #endif |
185 | }; | |
186 | ||
187 | struct 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 | ||
195 | struct 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 | ||
211 | struct 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 | ||
44af79f9 MT |
220 | /* |
221 | * We stash a pointer to our private neighbour information after our | |
222 | * hardware address in neigh->ha. The ALIGN() expression here makes | |
223 | * sure that this pointer is stored aligned so that an unaligned | |
224 | * load is not needed to dereference it. | |
225 | */ | |
1da177e4 LT |
226 | static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh) |
227 | { | |
44af79f9 MT |
228 | return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) + |
229 | INFINIBAND_ALEN, sizeof(void *)); | |
1da177e4 LT |
230 | } |
231 | ||
232 | extern struct workqueue_struct *ipoib_workqueue; | |
233 | ||
234 | /* functions */ | |
235 | ||
236 | void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr); | |
237 | ||
238 | struct ipoib_ah *ipoib_create_ah(struct net_device *dev, | |
239 | struct ib_pd *pd, struct ib_ah_attr *attr); | |
240 | void ipoib_free_ah(struct kref *kref); | |
241 | static inline void ipoib_put_ah(struct ipoib_ah *ah) | |
242 | { | |
243 | kref_put(&ah->ref, ipoib_free_ah); | |
244 | } | |
245 | ||
8ae5a8a2 | 246 | int ipoib_open(struct net_device *dev); |
1da177e4 LT |
247 | int ipoib_add_pkey_attr(struct net_device *dev); |
248 | ||
249 | void ipoib_send(struct net_device *dev, struct sk_buff *skb, | |
250 | struct ipoib_ah *address, u32 qpn); | |
251 | void ipoib_reap_ah(void *dev_ptr); | |
252 | ||
253 | void ipoib_flush_paths(struct net_device *dev); | |
254 | struct ipoib_dev_priv *ipoib_intf_alloc(const char *format); | |
255 | ||
256 | int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port); | |
257 | void ipoib_ib_dev_flush(void *dev); | |
258 | void ipoib_ib_dev_cleanup(struct net_device *dev); | |
259 | ||
260 | int ipoib_ib_dev_open(struct net_device *dev); | |
261 | int ipoib_ib_dev_up(struct net_device *dev); | |
0b3ea082 | 262 | int ipoib_ib_dev_down(struct net_device *dev, int flush); |
1da177e4 LT |
263 | int ipoib_ib_dev_stop(struct net_device *dev); |
264 | ||
265 | int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port); | |
266 | void ipoib_dev_cleanup(struct net_device *dev); | |
267 | ||
268 | void ipoib_mcast_join_task(void *dev_ptr); | |
269 | void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid, | |
270 | struct sk_buff *skb); | |
271 | ||
272 | void ipoib_mcast_restart_task(void *dev_ptr); | |
273 | int ipoib_mcast_start_thread(struct net_device *dev); | |
8d2cae06 | 274 | int ipoib_mcast_stop_thread(struct net_device *dev, int flush); |
1da177e4 LT |
275 | |
276 | void ipoib_mcast_dev_down(struct net_device *dev); | |
277 | void ipoib_mcast_dev_flush(struct net_device *dev); | |
278 | ||
8ae5a8a2 | 279 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
1da177e4 | 280 | struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); |
1da177e4 LT |
281 | int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter); |
282 | void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, | |
283 | union ib_gid *gid, | |
284 | unsigned long *created, | |
285 | unsigned int *queuelen, | |
286 | unsigned int *complete, | |
287 | unsigned int *send_only); | |
1732b0ef RD |
288 | |
289 | struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev); | |
290 | int ipoib_path_iter_next(struct ipoib_path_iter *iter); | |
291 | void ipoib_path_iter_read(struct ipoib_path_iter *iter, | |
292 | struct ipoib_path *path); | |
8ae5a8a2 | 293 | #endif |
1da177e4 LT |
294 | |
295 | int ipoib_mcast_attach(struct net_device *dev, u16 mlid, | |
296 | union ib_gid *mgid); | |
297 | int ipoib_mcast_detach(struct net_device *dev, u16 mlid, | |
298 | union ib_gid *mgid); | |
299 | ||
5b6810e0 | 300 | int ipoib_init_qp(struct net_device *dev); |
1da177e4 LT |
301 | int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca); |
302 | void ipoib_transport_dev_cleanup(struct net_device *dev); | |
303 | ||
304 | void ipoib_event(struct ib_event_handler *handler, | |
305 | struct ib_event *record); | |
306 | ||
307 | int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey); | |
308 | int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey); | |
309 | ||
310 | void ipoib_pkey_poll(void *dev); | |
311 | int ipoib_pkey_dev_delay_open(struct net_device *dev); | |
312 | ||
313 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG | |
1732b0ef RD |
314 | void ipoib_create_debug_files(struct net_device *dev); |
315 | void ipoib_delete_debug_files(struct net_device *dev); | |
1da177e4 LT |
316 | int ipoib_register_debugfs(void); |
317 | void ipoib_unregister_debugfs(void); | |
318 | #else | |
1732b0ef RD |
319 | static inline void ipoib_create_debug_files(struct net_device *dev) { } |
320 | static inline void ipoib_delete_debug_files(struct net_device *dev) { } | |
1da177e4 LT |
321 | static inline int ipoib_register_debugfs(void) { return 0; } |
322 | static inline void ipoib_unregister_debugfs(void) { } | |
323 | #endif | |
324 | ||
325 | ||
326 | #define ipoib_printk(level, priv, format, arg...) \ | |
327 | printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg) | |
328 | #define ipoib_warn(priv, format, arg...) \ | |
329 | ipoib_printk(KERN_WARNING, priv, format , ## arg) | |
330 | ||
331 | ||
332 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG | |
333 | extern int ipoib_debug_level; | |
334 | ||
335 | #define ipoib_dbg(priv, format, arg...) \ | |
336 | do { \ | |
337 | if (ipoib_debug_level > 0) \ | |
338 | ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ | |
339 | } while (0) | |
340 | #define ipoib_dbg_mcast(priv, format, arg...) \ | |
341 | do { \ | |
342 | if (mcast_debug_level > 0) \ | |
343 | ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ | |
344 | } while (0) | |
345 | #else /* CONFIG_INFINIBAND_IPOIB_DEBUG */ | |
346 | #define ipoib_dbg(priv, format, arg...) \ | |
347 | do { (void) (priv); } while (0) | |
348 | #define ipoib_dbg_mcast(priv, format, arg...) \ | |
349 | do { (void) (priv); } while (0) | |
350 | #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ | |
351 | ||
352 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA | |
353 | #define ipoib_dbg_data(priv, format, arg...) \ | |
354 | do { \ | |
355 | if (data_debug_level > 0) \ | |
356 | ipoib_printk(KERN_DEBUG, priv, format , ## arg); \ | |
357 | } while (0) | |
358 | #else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ | |
359 | #define ipoib_dbg_data(priv, format, arg...) \ | |
360 | do { (void) (priv); } while (0) | |
361 | #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */ | |
362 | ||
363 | ||
364 | #define IPOIB_GID_FMT "%x:%x:%x:%x:%x:%x:%x:%x" | |
365 | ||
366 | #define IPOIB_GID_ARG(gid) be16_to_cpup((__be16 *) ((gid).raw + 0)), \ | |
367 | be16_to_cpup((__be16 *) ((gid).raw + 2)), \ | |
368 | be16_to_cpup((__be16 *) ((gid).raw + 4)), \ | |
369 | be16_to_cpup((__be16 *) ((gid).raw + 6)), \ | |
370 | be16_to_cpup((__be16 *) ((gid).raw + 8)), \ | |
371 | be16_to_cpup((__be16 *) ((gid).raw + 10)), \ | |
372 | be16_to_cpup((__be16 *) ((gid).raw + 12)), \ | |
373 | be16_to_cpup((__be16 *) ((gid).raw + 14)) | |
374 | ||
375 | #endif /* _IPOIB_H */ |