Commit | Line | Data |
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1da177e4 | 1 | /* |
de493d47 | 2 | * Copyright (c) 2004-2007 Voltaire, Inc. All rights reserved. |
fa619a77 HR |
3 | * Copyright (c) 2005 Intel Corporation. All rights reserved. |
4 | * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved. | |
b76aabc3 | 5 | * Copyright (c) 2009 HNR Consulting. All rights reserved. |
4d60cad5 | 6 | * Copyright (c) 2014,2018 Intel Corporation. All rights reserved. |
1da177e4 LT |
7 | * |
8 | * This software is available to you under a choice of one of two | |
9 | * licenses. You may choose to be licensed under the terms of the GNU | |
10 | * General Public License (GPL) Version 2, available from the file | |
11 | * COPYING in the main directory of this source tree, or the | |
12 | * OpenIB.org BSD license below: | |
13 | * | |
14 | * Redistribution and use in source and binary forms, with or | |
15 | * without modification, are permitted provided that the following | |
16 | * conditions are met: | |
17 | * | |
18 | * - Redistributions of source code must retain the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer. | |
21 | * | |
22 | * - Redistributions in binary form must reproduce the above | |
23 | * copyright notice, this list of conditions and the following | |
24 | * disclaimer in the documentation and/or other materials | |
25 | * provided with the distribution. | |
26 | * | |
27 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
28 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
29 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
30 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
31 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
32 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
33 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
34 | * SOFTWARE. | |
35 | * | |
1da177e4 | 36 | */ |
7ef5d4b0 IW |
37 | |
38 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
39 | ||
1da177e4 | 40 | #include <linux/dma-mapping.h> |
5a0e3ad6 | 41 | #include <linux/slab.h> |
e4dd23d7 | 42 | #include <linux/module.h> |
47a2b338 | 43 | #include <linux/security.h> |
949a2370 | 44 | #include <linux/xarray.h> |
9874e746 | 45 | #include <rdma/ib_cache.h> |
1da177e4 LT |
46 | |
47 | #include "mad_priv.h" | |
47a2b338 | 48 | #include "core_priv.h" |
fa619a77 | 49 | #include "mad_rmpp.h" |
1da177e4 | 50 | #include "smi.h" |
8e4349d1 | 51 | #include "opa_smi.h" |
1da177e4 | 52 | #include "agent.h" |
1da177e4 | 53 | |
4d60cad5 IW |
54 | #define CREATE_TRACE_POINTS |
55 | #include <trace/events/ib_mad.h> | |
56 | ||
57 | #ifdef CONFIG_TRACEPOINTS | |
58 | static void create_mad_addr_info(struct ib_mad_send_wr_private *mad_send_wr, | |
59 | struct ib_mad_qp_info *qp_info, | |
60 | struct trace_event_raw_ib_mad_send_template *entry) | |
61 | { | |
4d60cad5 IW |
62 | struct ib_ud_wr *wr = &mad_send_wr->send_wr; |
63 | struct rdma_ah_attr attr = {}; | |
64 | ||
65 | rdma_query_ah(wr->ah, &attr); | |
66 | ||
67 | /* These are common */ | |
68 | entry->sl = attr.sl; | |
4d60cad5 IW |
69 | entry->rqpn = wr->remote_qpn; |
70 | entry->rqkey = wr->remote_qkey; | |
71 | entry->dlid = rdma_ah_get_dlid(&attr); | |
72 | } | |
73 | #endif | |
74 | ||
16933955 RD |
75 | static int mad_sendq_size = IB_MAD_QP_SEND_SIZE; |
76 | static int mad_recvq_size = IB_MAD_QP_RECV_SIZE; | |
b76aabc3 HR |
77 | |
78 | module_param_named(send_queue_size, mad_sendq_size, int, 0444); | |
79 | MODULE_PARM_DESC(send_queue_size, "Size of send queue in number of work requests"); | |
80 | module_param_named(recv_queue_size, mad_recvq_size, int, 0444); | |
81 | MODULE_PARM_DESC(recv_queue_size, "Size of receive queue in number of work requests"); | |
82 | ||
949a2370 MW |
83 | static DEFINE_XARRAY_ALLOC1(ib_mad_clients); |
84 | static u32 ib_mad_client_next; | |
1da177e4 | 85 | static struct list_head ib_mad_port_list; |
1da177e4 LT |
86 | |
87 | /* Port list lock */ | |
6276e08a | 88 | static DEFINE_SPINLOCK(ib_mad_port_list_lock); |
1da177e4 LT |
89 | |
90 | /* Forward declarations */ | |
91 | static int method_in_use(struct ib_mad_mgmt_method_table **method, | |
92 | struct ib_mad_reg_req *mad_reg_req); | |
93 | static void remove_mad_reg_req(struct ib_mad_agent_private *priv); | |
94 | static struct ib_mad_agent_private *find_mad_agent( | |
95 | struct ib_mad_port_private *port_priv, | |
d94bd266 | 96 | const struct ib_mad_hdr *mad); |
1da177e4 LT |
97 | static int ib_mad_post_receive_mads(struct ib_mad_qp_info *qp_info, |
98 | struct ib_mad_private *mad); | |
99 | static void cancel_mads(struct ib_mad_agent_private *mad_agent_priv); | |
c4028958 DH |
100 | static void timeout_sends(struct work_struct *work); |
101 | static void local_completions(struct work_struct *work); | |
1da177e4 LT |
102 | static int add_nonoui_reg_req(struct ib_mad_reg_req *mad_reg_req, |
103 | struct ib_mad_agent_private *agent_priv, | |
104 | u8 mgmt_class); | |
105 | static int add_oui_reg_req(struct ib_mad_reg_req *mad_reg_req, | |
106 | struct ib_mad_agent_private *agent_priv); | |
d53e11fd CH |
107 | static bool ib_mad_send_error(struct ib_mad_port_private *port_priv, |
108 | struct ib_wc *wc); | |
109 | static void ib_mad_send_done(struct ib_cq *cq, struct ib_wc *wc); | |
1da177e4 LT |
110 | |
111 | /* | |
112 | * Returns a ib_mad_port_private structure or NULL for a device/port | |
113 | * Assumes ib_mad_port_list_lock is being held | |
114 | */ | |
115 | static inline struct ib_mad_port_private * | |
1fb7f897 | 116 | __ib_get_mad_port(struct ib_device *device, u32 port_num) |
1da177e4 LT |
117 | { |
118 | struct ib_mad_port_private *entry; | |
119 | ||
120 | list_for_each_entry(entry, &ib_mad_port_list, port_list) { | |
121 | if (entry->device == device && entry->port_num == port_num) | |
122 | return entry; | |
123 | } | |
124 | return NULL; | |
125 | } | |
126 | ||
127 | /* | |
128 | * Wrapper function to return a ib_mad_port_private structure or NULL | |
129 | * for a device/port | |
130 | */ | |
131 | static inline struct ib_mad_port_private * | |
1fb7f897 | 132 | ib_get_mad_port(struct ib_device *device, u32 port_num) |
1da177e4 LT |
133 | { |
134 | struct ib_mad_port_private *entry; | |
135 | unsigned long flags; | |
136 | ||
137 | spin_lock_irqsave(&ib_mad_port_list_lock, flags); | |
138 | entry = __ib_get_mad_port(device, port_num); | |
139 | spin_unlock_irqrestore(&ib_mad_port_list_lock, flags); | |
140 | ||
141 | return entry; | |
142 | } | |
143 | ||
144 | static inline u8 convert_mgmt_class(u8 mgmt_class) | |
145 | { | |
146 | /* Alias IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE to 0 */ | |
147 | return mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE ? | |
148 | 0 : mgmt_class; | |
149 | } | |
150 | ||
151 | static int get_spl_qp_index(enum ib_qp_type qp_type) | |
152 | { | |
b6eb7011 | 153 | switch (qp_type) { |
1da177e4 LT |
154 | case IB_QPT_SMI: |
155 | return 0; | |
156 | case IB_QPT_GSI: | |
157 | return 1; | |
158 | default: | |
159 | return -1; | |
160 | } | |
161 | } | |
162 | ||
163 | static int vendor_class_index(u8 mgmt_class) | |
164 | { | |
165 | return mgmt_class - IB_MGMT_CLASS_VENDOR_RANGE2_START; | |
166 | } | |
167 | ||
168 | static int is_vendor_class(u8 mgmt_class) | |
169 | { | |
170 | if ((mgmt_class < IB_MGMT_CLASS_VENDOR_RANGE2_START) || | |
171 | (mgmt_class > IB_MGMT_CLASS_VENDOR_RANGE2_END)) | |
172 | return 0; | |
173 | return 1; | |
174 | } | |
175 | ||
176 | static int is_vendor_oui(char *oui) | |
177 | { | |
178 | if (oui[0] || oui[1] || oui[2]) | |
179 | return 1; | |
180 | return 0; | |
181 | } | |
182 | ||
183 | static int is_vendor_method_in_use( | |
184 | struct ib_mad_mgmt_vendor_class *vendor_class, | |
185 | struct ib_mad_reg_req *mad_reg_req) | |
186 | { | |
187 | struct ib_mad_mgmt_method_table *method; | |
188 | int i; | |
189 | ||
190 | for (i = 0; i < MAX_MGMT_OUI; i++) { | |
191 | if (!memcmp(vendor_class->oui[i], mad_reg_req->oui, 3)) { | |
192 | method = vendor_class->method_table[i]; | |
193 | if (method) { | |
194 | if (method_in_use(&method, mad_reg_req)) | |
195 | return 1; | |
196 | else | |
197 | break; | |
198 | } | |
199 | } | |
200 | } | |
201 | return 0; | |
202 | } | |
203 | ||
96909308 | 204 | int ib_response_mad(const struct ib_mad_hdr *hdr) |
2527e681 | 205 | { |
96909308 IW |
206 | return ((hdr->method & IB_MGMT_METHOD_RESP) || |
207 | (hdr->method == IB_MGMT_METHOD_TRAP_REPRESS) || | |
208 | ((hdr->mgmt_class == IB_MGMT_CLASS_BM) && | |
209 | (hdr->attr_mod & IB_BM_ATTR_MOD_RESP))); | |
2527e681 SH |
210 | } |
211 | EXPORT_SYMBOL(ib_response_mad); | |
212 | ||
1da177e4 LT |
213 | /* |
214 | * ib_register_mad_agent - Register to send/receive MADs | |
0c271c43 MW |
215 | * |
216 | * Context: Process context. | |
1da177e4 LT |
217 | */ |
218 | struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device, | |
1fb7f897 | 219 | u32 port_num, |
1da177e4 LT |
220 | enum ib_qp_type qp_type, |
221 | struct ib_mad_reg_req *mad_reg_req, | |
222 | u8 rmpp_version, | |
223 | ib_mad_send_handler send_handler, | |
224 | ib_mad_recv_handler recv_handler, | |
0f29b46d IW |
225 | void *context, |
226 | u32 registration_flags) | |
1da177e4 LT |
227 | { |
228 | struct ib_mad_port_private *port_priv; | |
229 | struct ib_mad_agent *ret = ERR_PTR(-EINVAL); | |
230 | struct ib_mad_agent_private *mad_agent_priv; | |
231 | struct ib_mad_reg_req *reg_req = NULL; | |
232 | struct ib_mad_mgmt_class_table *class; | |
233 | struct ib_mad_mgmt_vendor_class_table *vendor; | |
234 | struct ib_mad_mgmt_vendor_class *vendor_class; | |
235 | struct ib_mad_mgmt_method_table *method; | |
236 | int ret2, qpn; | |
1da177e4 LT |
237 | u8 mgmt_class, vclass; |
238 | ||
798bba01 PP |
239 | if ((qp_type == IB_QPT_SMI && !rdma_cap_ib_smi(device, port_num)) || |
240 | (qp_type == IB_QPT_GSI && !rdma_cap_ib_cm(device, port_num))) | |
241 | return ERR_PTR(-EPROTONOSUPPORT); | |
242 | ||
1da177e4 LT |
243 | /* Validate parameters */ |
244 | qpn = get_spl_qp_index(qp_type); | |
9ad13a42 | 245 | if (qpn == -1) { |
f9d08f1e PP |
246 | dev_dbg_ratelimited(&device->dev, "%s: invalid QP Type %d\n", |
247 | __func__, qp_type); | |
1da177e4 | 248 | goto error1; |
9ad13a42 | 249 | } |
1da177e4 | 250 | |
9ad13a42 | 251 | if (rmpp_version && rmpp_version != IB_MGMT_RMPP_VERSION) { |
f9d08f1e PP |
252 | dev_dbg_ratelimited(&device->dev, |
253 | "%s: invalid RMPP Version %u\n", | |
254 | __func__, rmpp_version); | |
fa619a77 | 255 | goto error1; |
9ad13a42 | 256 | } |
1da177e4 LT |
257 | |
258 | /* Validate MAD registration request if supplied */ | |
259 | if (mad_reg_req) { | |
9ad13a42 | 260 | if (mad_reg_req->mgmt_class_version >= MAX_MGMT_VERSION) { |
f9d08f1e PP |
261 | dev_dbg_ratelimited(&device->dev, |
262 | "%s: invalid Class Version %u\n", | |
263 | __func__, | |
264 | mad_reg_req->mgmt_class_version); | |
1da177e4 | 265 | goto error1; |
9ad13a42 IW |
266 | } |
267 | if (!recv_handler) { | |
f9d08f1e PP |
268 | dev_dbg_ratelimited(&device->dev, |
269 | "%s: no recv_handler\n", __func__); | |
1da177e4 | 270 | goto error1; |
9ad13a42 | 271 | } |
1da177e4 LT |
272 | if (mad_reg_req->mgmt_class >= MAX_MGMT_CLASS) { |
273 | /* | |
274 | * IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE is the only | |
275 | * one in this range currently allowed | |
276 | */ | |
277 | if (mad_reg_req->mgmt_class != | |
9ad13a42 | 278 | IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { |
f9d08f1e PP |
279 | dev_dbg_ratelimited(&device->dev, |
280 | "%s: Invalid Mgmt Class 0x%x\n", | |
281 | __func__, mad_reg_req->mgmt_class); | |
1da177e4 | 282 | goto error1; |
9ad13a42 | 283 | } |
1da177e4 LT |
284 | } else if (mad_reg_req->mgmt_class == 0) { |
285 | /* | |
286 | * Class 0 is reserved in IBA and is used for | |
287 | * aliasing of IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE | |
288 | */ | |
f9d08f1e PP |
289 | dev_dbg_ratelimited(&device->dev, |
290 | "%s: Invalid Mgmt Class 0\n", | |
291 | __func__); | |
1da177e4 LT |
292 | goto error1; |
293 | } else if (is_vendor_class(mad_reg_req->mgmt_class)) { | |
294 | /* | |
295 | * If class is in "new" vendor range, | |
296 | * ensure supplied OUI is not zero | |
297 | */ | |
9ad13a42 | 298 | if (!is_vendor_oui(mad_reg_req->oui)) { |
f9d08f1e PP |
299 | dev_dbg_ratelimited(&device->dev, |
300 | "%s: No OUI specified for class 0x%x\n", | |
301 | __func__, | |
302 | mad_reg_req->mgmt_class); | |
1da177e4 | 303 | goto error1; |
9ad13a42 | 304 | } |
1da177e4 | 305 | } |
618a3c03 | 306 | /* Make sure class supplied is consistent with RMPP */ |
64cb9c6a | 307 | if (!ib_is_mad_class_rmpp(mad_reg_req->mgmt_class)) { |
9ad13a42 | 308 | if (rmpp_version) { |
f9d08f1e PP |
309 | dev_dbg_ratelimited(&device->dev, |
310 | "%s: RMPP version for non-RMPP class 0x%x\n", | |
311 | __func__, mad_reg_req->mgmt_class); | |
618a3c03 | 312 | goto error1; |
9ad13a42 | 313 | } |
618a3c03 | 314 | } |
1471cb6c | 315 | |
1da177e4 LT |
316 | /* Make sure class supplied is consistent with QP type */ |
317 | if (qp_type == IB_QPT_SMI) { | |
318 | if ((mad_reg_req->mgmt_class != | |
319 | IB_MGMT_CLASS_SUBN_LID_ROUTED) && | |
320 | (mad_reg_req->mgmt_class != | |
9ad13a42 | 321 | IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) { |
f9d08f1e PP |
322 | dev_dbg_ratelimited(&device->dev, |
323 | "%s: Invalid SM QP type: class 0x%x\n", | |
324 | __func__, mad_reg_req->mgmt_class); | |
1da177e4 | 325 | goto error1; |
9ad13a42 | 326 | } |
1da177e4 LT |
327 | } else { |
328 | if ((mad_reg_req->mgmt_class == | |
329 | IB_MGMT_CLASS_SUBN_LID_ROUTED) || | |
330 | (mad_reg_req->mgmt_class == | |
9ad13a42 | 331 | IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) { |
f9d08f1e PP |
332 | dev_dbg_ratelimited(&device->dev, |
333 | "%s: Invalid GS QP type: class 0x%x\n", | |
334 | __func__, mad_reg_req->mgmt_class); | |
1da177e4 | 335 | goto error1; |
9ad13a42 | 336 | } |
1da177e4 LT |
337 | } |
338 | } else { | |
339 | /* No registration request supplied */ | |
340 | if (!send_handler) | |
341 | goto error1; | |
1471cb6c IW |
342 | if (registration_flags & IB_MAD_USER_RMPP) |
343 | goto error1; | |
1da177e4 LT |
344 | } |
345 | ||
346 | /* Validate device and port */ | |
347 | port_priv = ib_get_mad_port(device, port_num); | |
348 | if (!port_priv) { | |
3cea7b4a | 349 | dev_dbg_ratelimited(&device->dev, "%s: Invalid port %u\n", |
f9d08f1e | 350 | __func__, port_num); |
1da177e4 LT |
351 | ret = ERR_PTR(-ENODEV); |
352 | goto error1; | |
353 | } | |
354 | ||
f9d08f1e PP |
355 | /* Verify the QP requested is supported. For example, Ethernet devices |
356 | * will not have QP0. | |
357 | */ | |
c8367c4c | 358 | if (!port_priv->qp_info[qpn].qp) { |
f9d08f1e PP |
359 | dev_dbg_ratelimited(&device->dev, "%s: QP %d not supported\n", |
360 | __func__, qpn); | |
c8367c4c IW |
361 | ret = ERR_PTR(-EPROTONOSUPPORT); |
362 | goto error1; | |
363 | } | |
364 | ||
1da177e4 | 365 | /* Allocate structures */ |
de6eb66b | 366 | mad_agent_priv = kzalloc(sizeof *mad_agent_priv, GFP_KERNEL); |
1da177e4 LT |
367 | if (!mad_agent_priv) { |
368 | ret = ERR_PTR(-ENOMEM); | |
369 | goto error1; | |
370 | } | |
b82cab6b | 371 | |
1da177e4 | 372 | if (mad_reg_req) { |
9893e742 | 373 | reg_req = kmemdup(mad_reg_req, sizeof *reg_req, GFP_KERNEL); |
1da177e4 LT |
374 | if (!reg_req) { |
375 | ret = ERR_PTR(-ENOMEM); | |
b82cab6b | 376 | goto error3; |
1da177e4 | 377 | } |
1da177e4 LT |
378 | } |
379 | ||
380 | /* Now, fill in the various structures */ | |
1da177e4 LT |
381 | mad_agent_priv->qp_info = &port_priv->qp_info[qpn]; |
382 | mad_agent_priv->reg_req = reg_req; | |
fa619a77 | 383 | mad_agent_priv->agent.rmpp_version = rmpp_version; |
1da177e4 LT |
384 | mad_agent_priv->agent.device = device; |
385 | mad_agent_priv->agent.recv_handler = recv_handler; | |
386 | mad_agent_priv->agent.send_handler = send_handler; | |
387 | mad_agent_priv->agent.context = context; | |
388 | mad_agent_priv->agent.qp = port_priv->qp_info[qpn].qp; | |
389 | mad_agent_priv->agent.port_num = port_num; | |
0f29b46d | 390 | mad_agent_priv->agent.flags = registration_flags; |
d9620a4c RC |
391 | spin_lock_init(&mad_agent_priv->lock); |
392 | INIT_LIST_HEAD(&mad_agent_priv->send_list); | |
393 | INIT_LIST_HEAD(&mad_agent_priv->wait_list); | |
394 | INIT_LIST_HEAD(&mad_agent_priv->done_list); | |
395 | INIT_LIST_HEAD(&mad_agent_priv->rmpp_list); | |
396 | INIT_DELAYED_WORK(&mad_agent_priv->timed_work, timeout_sends); | |
397 | INIT_LIST_HEAD(&mad_agent_priv->local_list); | |
398 | INIT_WORK(&mad_agent_priv->local_work, local_completions); | |
e41c4253 | 399 | refcount_set(&mad_agent_priv->refcount, 1); |
d9620a4c | 400 | init_completion(&mad_agent_priv->comp); |
1da177e4 | 401 | |
47a2b338 DJ |
402 | ret2 = ib_mad_agent_security_setup(&mad_agent_priv->agent, qp_type); |
403 | if (ret2) { | |
404 | ret = ERR_PTR(ret2); | |
405 | goto error4; | |
406 | } | |
407 | ||
949a2370 MW |
408 | /* |
409 | * The mlx4 driver uses the top byte to distinguish which virtual | |
410 | * function generated the MAD, so we must avoid using it. | |
411 | */ | |
412 | ret2 = xa_alloc_cyclic(&ib_mad_clients, &mad_agent_priv->agent.hi_tid, | |
413 | mad_agent_priv, XA_LIMIT(0, (1 << 24) - 1), | |
414 | &ib_mad_client_next, GFP_KERNEL); | |
9a41e38a | 415 | if (ret2 < 0) { |
416 | ret = ERR_PTR(ret2); | |
417 | goto error5; | |
418 | } | |
1da177e4 LT |
419 | |
420 | /* | |
421 | * Make sure MAD registration (if supplied) | |
422 | * is non overlapping with any existing ones | |
423 | */ | |
9a41e38a | 424 | spin_lock_irq(&port_priv->reg_lock); |
1da177e4 LT |
425 | if (mad_reg_req) { |
426 | mgmt_class = convert_mgmt_class(mad_reg_req->mgmt_class); | |
427 | if (!is_vendor_class(mgmt_class)) { | |
428 | class = port_priv->version[mad_reg_req-> | |
429 | mgmt_class_version].class; | |
430 | if (class) { | |
431 | method = class->method_table[mgmt_class]; | |
432 | if (method) { | |
433 | if (method_in_use(&method, | |
434 | mad_reg_req)) | |
9a41e38a | 435 | goto error6; |
1da177e4 LT |
436 | } |
437 | } | |
438 | ret2 = add_nonoui_reg_req(mad_reg_req, mad_agent_priv, | |
439 | mgmt_class); | |
440 | } else { | |
441 | /* "New" vendor class range */ | |
442 | vendor = port_priv->version[mad_reg_req-> | |
443 | mgmt_class_version].vendor; | |
444 | if (vendor) { | |
445 | vclass = vendor_class_index(mgmt_class); | |
446 | vendor_class = vendor->vendor_class[vclass]; | |
447 | if (vendor_class) { | |
448 | if (is_vendor_method_in_use( | |
449 | vendor_class, | |
450 | mad_reg_req)) | |
9a41e38a | 451 | goto error6; |
1da177e4 LT |
452 | } |
453 | } | |
454 | ret2 = add_oui_reg_req(mad_reg_req, mad_agent_priv); | |
455 | } | |
456 | if (ret2) { | |
457 | ret = ERR_PTR(ret2); | |
9a41e38a | 458 | goto error6; |
1da177e4 LT |
459 | } |
460 | } | |
0c271c43 | 461 | spin_unlock_irq(&port_priv->reg_lock); |
1da177e4 | 462 | |
0e65bae2 | 463 | trace_ib_mad_create_agent(mad_agent_priv); |
1da177e4 | 464 | return &mad_agent_priv->agent; |
9a41e38a | 465 | error6: |
0c271c43 | 466 | spin_unlock_irq(&port_priv->reg_lock); |
949a2370 | 467 | xa_erase(&ib_mad_clients, mad_agent_priv->agent.hi_tid); |
9a41e38a | 468 | error5: |
47a2b338 DJ |
469 | ib_mad_agent_security_cleanup(&mad_agent_priv->agent); |
470 | error4: | |
1da177e4 | 471 | kfree(reg_req); |
b82cab6b | 472 | error3: |
2012a116 | 473 | kfree(mad_agent_priv); |
1da177e4 LT |
474 | error1: |
475 | return ret; | |
476 | } | |
477 | EXPORT_SYMBOL(ib_register_mad_agent); | |
478 | ||
1b52fa98 SH |
479 | static inline void deref_mad_agent(struct ib_mad_agent_private *mad_agent_priv) |
480 | { | |
e41c4253 | 481 | if (refcount_dec_and_test(&mad_agent_priv->refcount)) |
1b52fa98 SH |
482 | complete(&mad_agent_priv->comp); |
483 | } | |
484 | ||
1da177e4 LT |
485 | static void unregister_mad_agent(struct ib_mad_agent_private *mad_agent_priv) |
486 | { | |
487 | struct ib_mad_port_private *port_priv; | |
1da177e4 LT |
488 | |
489 | /* Note that we could still be handling received MADs */ | |
0e65bae2 | 490 | trace_ib_mad_unregister_agent(mad_agent_priv); |
1da177e4 LT |
491 | |
492 | /* | |
493 | * Canceling all sends results in dropping received response | |
494 | * MADs, preventing us from queuing additional work | |
495 | */ | |
496 | cancel_mads(mad_agent_priv); | |
1da177e4 | 497 | port_priv = mad_agent_priv->qp_info->port_priv; |
1da177e4 | 498 | cancel_delayed_work(&mad_agent_priv->timed_work); |
1da177e4 | 499 | |
0c271c43 | 500 | spin_lock_irq(&port_priv->reg_lock); |
1da177e4 | 501 | remove_mad_reg_req(mad_agent_priv); |
0c271c43 | 502 | spin_unlock_irq(&port_priv->reg_lock); |
949a2370 | 503 | xa_erase(&ib_mad_clients, mad_agent_priv->agent.hi_tid); |
1da177e4 | 504 | |
b82cab6b | 505 | flush_workqueue(port_priv->wq); |
1da177e4 | 506 | |
1b52fa98 SH |
507 | deref_mad_agent(mad_agent_priv); |
508 | wait_for_completion(&mad_agent_priv->comp); | |
116a1b9f | 509 | ib_cancel_rmpp_recvs(mad_agent_priv); |
1da177e4 | 510 | |
47a2b338 DJ |
511 | ib_mad_agent_security_cleanup(&mad_agent_priv->agent); |
512 | ||
6044ec88 | 513 | kfree(mad_agent_priv->reg_req); |
9a41e38a | 514 | kfree_rcu(mad_agent_priv, rcu); |
1da177e4 LT |
515 | } |
516 | ||
1da177e4 LT |
517 | /* |
518 | * ib_unregister_mad_agent - Unregisters a client from using MAD services | |
0c271c43 MW |
519 | * |
520 | * Context: Process context. | |
1da177e4 | 521 | */ |
8d2216be | 522 | void ib_unregister_mad_agent(struct ib_mad_agent *mad_agent) |
1da177e4 LT |
523 | { |
524 | struct ib_mad_agent_private *mad_agent_priv; | |
04c349a9 MG |
525 | |
526 | mad_agent_priv = container_of(mad_agent, | |
527 | struct ib_mad_agent_private, | |
528 | agent); | |
529 | unregister_mad_agent(mad_agent_priv); | |
1da177e4 LT |
530 | } |
531 | EXPORT_SYMBOL(ib_unregister_mad_agent); | |
532 | ||
533 | static void dequeue_mad(struct ib_mad_list_head *mad_list) | |
534 | { | |
535 | struct ib_mad_queue *mad_queue; | |
536 | unsigned long flags; | |
537 | ||
1da177e4 LT |
538 | mad_queue = mad_list->mad_queue; |
539 | spin_lock_irqsave(&mad_queue->lock, flags); | |
540 | list_del(&mad_list->list); | |
541 | mad_queue->count--; | |
542 | spin_unlock_irqrestore(&mad_queue->lock, flags); | |
543 | } | |
544 | ||
d53e11fd | 545 | static void build_smp_wc(struct ib_qp *qp, struct ib_cqe *cqe, u16 slid, |
1fb7f897 | 546 | u16 pkey_index, u32 port_num, struct ib_wc *wc) |
1da177e4 LT |
547 | { |
548 | memset(wc, 0, sizeof *wc); | |
d53e11fd | 549 | wc->wr_cqe = cqe; |
1da177e4 LT |
550 | wc->status = IB_WC_SUCCESS; |
551 | wc->opcode = IB_WC_RECV; | |
552 | wc->pkey_index = pkey_index; | |
553 | wc->byte_len = sizeof(struct ib_mad) + sizeof(struct ib_grh); | |
554 | wc->src_qp = IB_QP0; | |
062dbb69 | 555 | wc->qp = qp; |
1da177e4 LT |
556 | wc->slid = slid; |
557 | wc->sl = 0; | |
558 | wc->dlid_path_bits = 0; | |
559 | wc->port_num = port_num; | |
560 | } | |
561 | ||
c9082e51 IW |
562 | static size_t mad_priv_size(const struct ib_mad_private *mp) |
563 | { | |
564 | return sizeof(struct ib_mad_private) + mp->mad_size; | |
565 | } | |
566 | ||
567 | static struct ib_mad_private *alloc_mad_private(size_t mad_size, gfp_t flags) | |
568 | { | |
569 | size_t size = sizeof(struct ib_mad_private) + mad_size; | |
570 | struct ib_mad_private *ret = kzalloc(size, flags); | |
571 | ||
572 | if (ret) | |
573 | ret->mad_size = mad_size; | |
574 | ||
575 | return ret; | |
576 | } | |
577 | ||
578 | static size_t port_mad_size(const struct ib_mad_port_private *port_priv) | |
579 | { | |
580 | return rdma_max_mad_size(port_priv->device, port_priv->port_num); | |
581 | } | |
582 | ||
583 | static size_t mad_priv_dma_size(const struct ib_mad_private *mp) | |
584 | { | |
585 | return sizeof(struct ib_grh) + mp->mad_size; | |
586 | } | |
587 | ||
1da177e4 LT |
588 | /* |
589 | * Return 0 if SMP is to be sent | |
590 | * Return 1 if SMP was consumed locally (whether or not solicited) | |
591 | * Return < 0 if error | |
592 | */ | |
593 | static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv, | |
34816ad9 | 594 | struct ib_mad_send_wr_private *mad_send_wr) |
1da177e4 | 595 | { |
de493d47 | 596 | int ret = 0; |
34816ad9 | 597 | struct ib_smp *smp = mad_send_wr->send_buf.mad; |
8e4349d1 | 598 | struct opa_smp *opa_smp = (struct opa_smp *)smp; |
1da177e4 LT |
599 | unsigned long flags; |
600 | struct ib_mad_local_private *local; | |
601 | struct ib_mad_private *mad_priv; | |
602 | struct ib_mad_port_private *port_priv; | |
603 | struct ib_mad_agent_private *recv_mad_agent = NULL; | |
604 | struct ib_device *device = mad_agent_priv->agent.device; | |
1fb7f897 | 605 | u32 port_num; |
1da177e4 | 606 | struct ib_wc mad_wc; |
e622f2f4 | 607 | struct ib_ud_wr *send_wr = &mad_send_wr->send_wr; |
c9082e51 | 608 | size_t mad_size = port_mad_size(mad_agent_priv->qp_info->port_priv); |
4cd7c947 | 609 | u16 out_mad_pkey_index = 0; |
8e4349d1 IW |
610 | u16 drslid; |
611 | bool opa = rdma_cap_opa_mad(mad_agent_priv->qp_info->port_priv->device, | |
612 | mad_agent_priv->qp_info->port_priv->port_num); | |
1da177e4 | 613 | |
4139032b | 614 | if (rdma_cap_ib_switch(device) && |
1bae4dbf | 615 | smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) |
e622f2f4 | 616 | port_num = send_wr->port_num; |
1bae4dbf HR |
617 | else |
618 | port_num = mad_agent_priv->agent.port_num; | |
619 | ||
8cf3f04f RC |
620 | /* |
621 | * Directed route handling starts if the initial LID routed part of | |
622 | * a request or the ending LID routed part of a response is empty. | |
623 | * If we are at the start of the LID routed part, don't update the | |
624 | * hop_ptr or hop_cnt. See section 14.2.2, Vol 1 IB spec. | |
625 | */ | |
9fa240bb | 626 | if (opa && smp->class_version == OPA_SM_CLASS_VERSION) { |
8e4349d1 IW |
627 | u32 opa_drslid; |
628 | ||
2ccfbb70 IW |
629 | trace_ib_mad_handle_out_opa_smi(opa_smp); |
630 | ||
8e4349d1 IW |
631 | if ((opa_get_smp_direction(opa_smp) |
632 | ? opa_smp->route.dr.dr_dlid : opa_smp->route.dr.dr_slid) == | |
633 | OPA_LID_PERMISSIVE && | |
4139032b HR |
634 | opa_smi_handle_dr_smp_send(opa_smp, |
635 | rdma_cap_ib_switch(device), | |
8e4349d1 IW |
636 | port_num) == IB_SMI_DISCARD) { |
637 | ret = -EINVAL; | |
638 | dev_err(&device->dev, "OPA Invalid directed route\n"); | |
639 | goto out; | |
640 | } | |
641 | opa_drslid = be32_to_cpu(opa_smp->route.dr.dr_slid); | |
cd4cd565 | 642 | if (opa_drslid != be32_to_cpu(OPA_LID_PERMISSIVE) && |
8e4349d1 IW |
643 | opa_drslid & 0xffff0000) { |
644 | ret = -EINVAL; | |
645 | dev_err(&device->dev, "OPA Invalid dr_slid 0x%x\n", | |
646 | opa_drslid); | |
647 | goto out; | |
648 | } | |
649 | drslid = (u16)(opa_drslid & 0x0000ffff); | |
de493d47 | 650 | |
8e4349d1 IW |
651 | /* Check to post send on QP or process locally */ |
652 | if (opa_smi_check_local_smp(opa_smp, device) == IB_SMI_DISCARD && | |
653 | opa_smi_check_local_returning_smp(opa_smp, device) == IB_SMI_DISCARD) | |
654 | goto out; | |
655 | } else { | |
2ccfbb70 IW |
656 | trace_ib_mad_handle_out_ib_smi(smp); |
657 | ||
8e4349d1 IW |
658 | if ((ib_get_smp_direction(smp) ? smp->dr_dlid : smp->dr_slid) == |
659 | IB_LID_PERMISSIVE && | |
4139032b | 660 | smi_handle_dr_smp_send(smp, rdma_cap_ib_switch(device), port_num) == |
8e4349d1 IW |
661 | IB_SMI_DISCARD) { |
662 | ret = -EINVAL; | |
663 | dev_err(&device->dev, "Invalid directed route\n"); | |
664 | goto out; | |
665 | } | |
666 | drslid = be16_to_cpu(smp->dr_slid); | |
667 | ||
668 | /* Check to post send on QP or process locally */ | |
669 | if (smi_check_local_smp(smp, device) == IB_SMI_DISCARD && | |
670 | smi_check_local_returning_smp(smp, device) == IB_SMI_DISCARD) | |
671 | goto out; | |
672 | } | |
1da177e4 LT |
673 | |
674 | local = kmalloc(sizeof *local, GFP_ATOMIC); | |
675 | if (!local) { | |
676 | ret = -ENOMEM; | |
1da177e4 LT |
677 | goto out; |
678 | } | |
679 | local->mad_priv = NULL; | |
680 | local->recv_mad_agent = NULL; | |
c9082e51 | 681 | mad_priv = alloc_mad_private(mad_size, GFP_ATOMIC); |
1da177e4 LT |
682 | if (!mad_priv) { |
683 | ret = -ENOMEM; | |
1da177e4 LT |
684 | kfree(local); |
685 | goto out; | |
686 | } | |
687 | ||
062dbb69 | 688 | build_smp_wc(mad_agent_priv->agent.qp, |
d53e11fd | 689 | send_wr->wr.wr_cqe, drslid, |
e622f2f4 CH |
690 | send_wr->pkey_index, |
691 | send_wr->port_num, &mad_wc); | |
1da177e4 | 692 | |
8e4349d1 IW |
693 | if (opa && smp->base_version == OPA_MGMT_BASE_VERSION) { |
694 | mad_wc.byte_len = mad_send_wr->send_buf.hdr_len | |
695 | + mad_send_wr->send_buf.data_len | |
696 | + sizeof(struct ib_grh); | |
697 | } | |
698 | ||
1da177e4 | 699 | /* No GRH for DR SMP */ |
3023a1e9 | 700 | ret = device->ops.process_mad(device, 0, port_num, &mad_wc, NULL, |
e26e7b88 LR |
701 | (const struct ib_mad *)smp, |
702 | (struct ib_mad *)mad_priv->mad, &mad_size, | |
703 | &out_mad_pkey_index); | |
b6eb7011 | 704 | switch (ret) { |
1da177e4 | 705 | case IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY: |
c9082e51 | 706 | if (ib_response_mad((const struct ib_mad_hdr *)mad_priv->mad) && |
1da177e4 LT |
707 | mad_agent_priv->agent.recv_handler) { |
708 | local->mad_priv = mad_priv; | |
709 | local->recv_mad_agent = mad_agent_priv; | |
710 | /* | |
711 | * Reference MAD agent until receive | |
712 | * side of local completion handled | |
713 | */ | |
e41c4253 | 714 | refcount_inc(&mad_agent_priv->refcount); |
1da177e4 | 715 | } else |
c9082e51 | 716 | kfree(mad_priv); |
1da177e4 LT |
717 | break; |
718 | case IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED: | |
c9082e51 | 719 | kfree(mad_priv); |
4780c195 | 720 | break; |
1da177e4 LT |
721 | case IB_MAD_RESULT_SUCCESS: |
722 | /* Treat like an incoming receive MAD */ | |
1da177e4 LT |
723 | port_priv = ib_get_mad_port(mad_agent_priv->agent.device, |
724 | mad_agent_priv->agent.port_num); | |
725 | if (port_priv) { | |
c9082e51 | 726 | memcpy(mad_priv->mad, smp, mad_priv->mad_size); |
1da177e4 | 727 | recv_mad_agent = find_mad_agent(port_priv, |
c9082e51 | 728 | (const struct ib_mad_hdr *)mad_priv->mad); |
1da177e4 LT |
729 | } |
730 | if (!port_priv || !recv_mad_agent) { | |
4780c195 RC |
731 | /* |
732 | * No receiving agent so drop packet and | |
733 | * generate send completion. | |
734 | */ | |
c9082e51 | 735 | kfree(mad_priv); |
4780c195 | 736 | break; |
1da177e4 LT |
737 | } |
738 | local->mad_priv = mad_priv; | |
739 | local->recv_mad_agent = recv_mad_agent; | |
740 | break; | |
741 | default: | |
c9082e51 | 742 | kfree(mad_priv); |
1da177e4 LT |
743 | kfree(local); |
744 | ret = -EINVAL; | |
745 | goto out; | |
746 | } | |
747 | ||
34816ad9 | 748 | local->mad_send_wr = mad_send_wr; |
8e4349d1 | 749 | if (opa) { |
e622f2f4 | 750 | local->mad_send_wr->send_wr.pkey_index = out_mad_pkey_index; |
8e4349d1 IW |
751 | local->return_wc_byte_len = mad_size; |
752 | } | |
1da177e4 | 753 | /* Reference MAD agent until send side of local completion handled */ |
e41c4253 | 754 | refcount_inc(&mad_agent_priv->refcount); |
1da177e4 LT |
755 | /* Queue local completion to local list */ |
756 | spin_lock_irqsave(&mad_agent_priv->lock, flags); | |
757 | list_add_tail(&local->completion_list, &mad_agent_priv->local_list); | |
758 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); | |
759 | queue_work(mad_agent_priv->qp_info->port_priv->wq, | |
b82cab6b | 760 | &mad_agent_priv->local_work); |
1da177e4 LT |
761 | ret = 1; |
762 | out: | |
763 | return ret; | |
764 | } | |
765 | ||
548ead17 | 766 | static int get_pad_size(int hdr_len, int data_len, size_t mad_size) |
824c8ae7 HR |
767 | { |
768 | int seg_size, pad; | |
769 | ||
548ead17 | 770 | seg_size = mad_size - hdr_len; |
824c8ae7 HR |
771 | if (data_len && seg_size) { |
772 | pad = seg_size - data_len % seg_size; | |
f36e1793 | 773 | return pad == seg_size ? 0 : pad; |
824c8ae7 | 774 | } else |
f36e1793 JM |
775 | return seg_size; |
776 | } | |
777 | ||
778 | static void free_send_rmpp_list(struct ib_mad_send_wr_private *mad_send_wr) | |
779 | { | |
780 | struct ib_rmpp_segment *s, *t; | |
781 | ||
782 | list_for_each_entry_safe(s, t, &mad_send_wr->rmpp_list, list) { | |
783 | list_del(&s->list); | |
784 | kfree(s); | |
785 | } | |
786 | } | |
787 | ||
788 | static int alloc_send_rmpp_list(struct ib_mad_send_wr_private *send_wr, | |
548ead17 | 789 | size_t mad_size, gfp_t gfp_mask) |
f36e1793 JM |
790 | { |
791 | struct ib_mad_send_buf *send_buf = &send_wr->send_buf; | |
792 | struct ib_rmpp_mad *rmpp_mad = send_buf->mad; | |
793 | struct ib_rmpp_segment *seg = NULL; | |
794 | int left, seg_size, pad; | |
795 | ||
548ead17 IW |
796 | send_buf->seg_size = mad_size - send_buf->hdr_len; |
797 | send_buf->seg_rmpp_size = mad_size - IB_MGMT_RMPP_HDR; | |
f36e1793 JM |
798 | seg_size = send_buf->seg_size; |
799 | pad = send_wr->pad; | |
800 | ||
801 | /* Allocate data segments. */ | |
802 | for (left = send_buf->data_len + pad; left > 0; left -= seg_size) { | |
f681967a | 803 | seg = kmalloc(sizeof(*seg) + seg_size, gfp_mask); |
f36e1793 | 804 | if (!seg) { |
f36e1793 JM |
805 | free_send_rmpp_list(send_wr); |
806 | return -ENOMEM; | |
807 | } | |
808 | seg->num = ++send_buf->seg_count; | |
809 | list_add_tail(&seg->list, &send_wr->rmpp_list); | |
810 | } | |
811 | ||
812 | /* Zero any padding */ | |
813 | if (pad) | |
814 | memset(seg->data + seg_size - pad, 0, pad); | |
815 | ||
816 | rmpp_mad->rmpp_hdr.rmpp_version = send_wr->mad_agent_priv-> | |
817 | agent.rmpp_version; | |
818 | rmpp_mad->rmpp_hdr.rmpp_type = IB_MGMT_RMPP_TYPE_DATA; | |
819 | ib_set_rmpp_flags(&rmpp_mad->rmpp_hdr, IB_MGMT_RMPP_FLAG_ACTIVE); | |
820 | ||
821 | send_wr->cur_seg = container_of(send_wr->rmpp_list.next, | |
822 | struct ib_rmpp_segment, list); | |
823 | send_wr->last_ack_seg = send_wr->cur_seg; | |
824 | return 0; | |
824c8ae7 HR |
825 | } |
826 | ||
f766c58f | 827 | int ib_mad_kernel_rmpp_agent(const struct ib_mad_agent *agent) |
1471cb6c IW |
828 | { |
829 | return agent->rmpp_version && !(agent->flags & IB_MAD_USER_RMPP); | |
830 | } | |
831 | EXPORT_SYMBOL(ib_mad_kernel_rmpp_agent); | |
832 | ||
f681967a WL |
833 | struct ib_mad_send_buf *ib_create_send_mad(struct ib_mad_agent *mad_agent, |
834 | u32 remote_qpn, u16 pkey_index, | |
835 | int rmpp_active, int hdr_len, | |
836 | int data_len, gfp_t gfp_mask, | |
837 | u8 base_version) | |
824c8ae7 HR |
838 | { |
839 | struct ib_mad_agent_private *mad_agent_priv; | |
34816ad9 | 840 | struct ib_mad_send_wr_private *mad_send_wr; |
f36e1793 | 841 | int pad, message_size, ret, size; |
824c8ae7 | 842 | void *buf; |
548ead17 IW |
843 | size_t mad_size; |
844 | bool opa; | |
824c8ae7 | 845 | |
34816ad9 SH |
846 | mad_agent_priv = container_of(mad_agent, struct ib_mad_agent_private, |
847 | agent); | |
548ead17 IW |
848 | |
849 | opa = rdma_cap_opa_mad(mad_agent->device, mad_agent->port_num); | |
850 | ||
851 | if (opa && base_version == OPA_MGMT_BASE_VERSION) | |
852 | mad_size = sizeof(struct opa_mad); | |
853 | else | |
854 | mad_size = sizeof(struct ib_mad); | |
855 | ||
856 | pad = get_pad_size(hdr_len, data_len, mad_size); | |
f36e1793 | 857 | message_size = hdr_len + data_len + pad; |
824c8ae7 | 858 | |
1471cb6c | 859 | if (ib_mad_kernel_rmpp_agent(mad_agent)) { |
548ead17 | 860 | if (!rmpp_active && message_size > mad_size) |
1471cb6c IW |
861 | return ERR_PTR(-EINVAL); |
862 | } else | |
548ead17 | 863 | if (rmpp_active || message_size > mad_size) |
1471cb6c | 864 | return ERR_PTR(-EINVAL); |
fa619a77 | 865 | |
548ead17 | 866 | size = rmpp_active ? hdr_len : mad_size; |
f36e1793 | 867 | buf = kzalloc(sizeof *mad_send_wr + size, gfp_mask); |
824c8ae7 HR |
868 | if (!buf) |
869 | return ERR_PTR(-ENOMEM); | |
34816ad9 | 870 | |
f36e1793 JM |
871 | mad_send_wr = buf + size; |
872 | INIT_LIST_HEAD(&mad_send_wr->rmpp_list); | |
34816ad9 | 873 | mad_send_wr->send_buf.mad = buf; |
f36e1793 JM |
874 | mad_send_wr->send_buf.hdr_len = hdr_len; |
875 | mad_send_wr->send_buf.data_len = data_len; | |
876 | mad_send_wr->pad = pad; | |
34816ad9 SH |
877 | |
878 | mad_send_wr->mad_agent_priv = mad_agent_priv; | |
f36e1793 | 879 | mad_send_wr->sg_list[0].length = hdr_len; |
4be90bc6 | 880 | mad_send_wr->sg_list[0].lkey = mad_agent->qp->pd->local_dma_lkey; |
548ead17 IW |
881 | |
882 | /* OPA MADs don't have to be the full 2048 bytes */ | |
883 | if (opa && base_version == OPA_MGMT_BASE_VERSION && | |
884 | data_len < mad_size - hdr_len) | |
885 | mad_send_wr->sg_list[1].length = data_len; | |
886 | else | |
887 | mad_send_wr->sg_list[1].length = mad_size - hdr_len; | |
888 | ||
4be90bc6 | 889 | mad_send_wr->sg_list[1].lkey = mad_agent->qp->pd->local_dma_lkey; |
34816ad9 | 890 | |
d53e11fd CH |
891 | mad_send_wr->mad_list.cqe.done = ib_mad_send_done; |
892 | ||
893 | mad_send_wr->send_wr.wr.wr_cqe = &mad_send_wr->mad_list.cqe; | |
e622f2f4 CH |
894 | mad_send_wr->send_wr.wr.sg_list = mad_send_wr->sg_list; |
895 | mad_send_wr->send_wr.wr.num_sge = 2; | |
896 | mad_send_wr->send_wr.wr.opcode = IB_WR_SEND; | |
897 | mad_send_wr->send_wr.wr.send_flags = IB_SEND_SIGNALED; | |
898 | mad_send_wr->send_wr.remote_qpn = remote_qpn; | |
899 | mad_send_wr->send_wr.remote_qkey = IB_QP_SET_QKEY; | |
900 | mad_send_wr->send_wr.pkey_index = pkey_index; | |
fa619a77 HR |
901 | |
902 | if (rmpp_active) { | |
548ead17 | 903 | ret = alloc_send_rmpp_list(mad_send_wr, mad_size, gfp_mask); |
f36e1793 JM |
904 | if (ret) { |
905 | kfree(buf); | |
906 | return ERR_PTR(ret); | |
907 | } | |
fa619a77 HR |
908 | } |
909 | ||
34816ad9 | 910 | mad_send_wr->send_buf.mad_agent = mad_agent; |
e41c4253 | 911 | refcount_inc(&mad_agent_priv->refcount); |
34816ad9 | 912 | return &mad_send_wr->send_buf; |
824c8ae7 HR |
913 | } |
914 | EXPORT_SYMBOL(ib_create_send_mad); | |
915 | ||
618a3c03 HR |
916 | int ib_get_mad_data_offset(u8 mgmt_class) |
917 | { | |
918 | if (mgmt_class == IB_MGMT_CLASS_SUBN_ADM) | |
919 | return IB_MGMT_SA_HDR; | |
920 | else if ((mgmt_class == IB_MGMT_CLASS_DEVICE_MGMT) || | |
921 | (mgmt_class == IB_MGMT_CLASS_DEVICE_ADM) || | |
922 | (mgmt_class == IB_MGMT_CLASS_BIS)) | |
923 | return IB_MGMT_DEVICE_HDR; | |
924 | else if ((mgmt_class >= IB_MGMT_CLASS_VENDOR_RANGE2_START) && | |
925 | (mgmt_class <= IB_MGMT_CLASS_VENDOR_RANGE2_END)) | |
926 | return IB_MGMT_VENDOR_HDR; | |
927 | else | |
928 | return IB_MGMT_MAD_HDR; | |
929 | } | |
930 | EXPORT_SYMBOL(ib_get_mad_data_offset); | |
931 | ||
932 | int ib_is_mad_class_rmpp(u8 mgmt_class) | |
933 | { | |
934 | if ((mgmt_class == IB_MGMT_CLASS_SUBN_ADM) || | |
935 | (mgmt_class == IB_MGMT_CLASS_DEVICE_MGMT) || | |
936 | (mgmt_class == IB_MGMT_CLASS_DEVICE_ADM) || | |
937 | (mgmt_class == IB_MGMT_CLASS_BIS) || | |
938 | ((mgmt_class >= IB_MGMT_CLASS_VENDOR_RANGE2_START) && | |
939 | (mgmt_class <= IB_MGMT_CLASS_VENDOR_RANGE2_END))) | |
940 | return 1; | |
941 | return 0; | |
942 | } | |
943 | EXPORT_SYMBOL(ib_is_mad_class_rmpp); | |
944 | ||
f36e1793 JM |
945 | void *ib_get_rmpp_segment(struct ib_mad_send_buf *send_buf, int seg_num) |
946 | { | |
947 | struct ib_mad_send_wr_private *mad_send_wr; | |
948 | struct list_head *list; | |
949 | ||
950 | mad_send_wr = container_of(send_buf, struct ib_mad_send_wr_private, | |
951 | send_buf); | |
952 | list = &mad_send_wr->cur_seg->list; | |
953 | ||
954 | if (mad_send_wr->cur_seg->num < seg_num) { | |
955 | list_for_each_entry(mad_send_wr->cur_seg, list, list) | |
956 | if (mad_send_wr->cur_seg->num == seg_num) | |
957 | break; | |
958 | } else if (mad_send_wr->cur_seg->num > seg_num) { | |
959 | list_for_each_entry_reverse(mad_send_wr->cur_seg, list, list) | |
960 | if (mad_send_wr->cur_seg->num == seg_num) | |
961 | break; | |
962 | } | |
963 | return mad_send_wr->cur_seg->data; | |
964 | } | |
965 | EXPORT_SYMBOL(ib_get_rmpp_segment); | |
966 | ||
967 | static inline void *ib_get_payload(struct ib_mad_send_wr_private *mad_send_wr) | |
968 | { | |
969 | if (mad_send_wr->send_buf.seg_count) | |
970 | return ib_get_rmpp_segment(&mad_send_wr->send_buf, | |
971 | mad_send_wr->seg_num); | |
972 | else | |
973 | return mad_send_wr->send_buf.mad + | |
974 | mad_send_wr->send_buf.hdr_len; | |
975 | } | |
976 | ||
824c8ae7 HR |
977 | void ib_free_send_mad(struct ib_mad_send_buf *send_buf) |
978 | { | |
979 | struct ib_mad_agent_private *mad_agent_priv; | |
f36e1793 | 980 | struct ib_mad_send_wr_private *mad_send_wr; |
824c8ae7 HR |
981 | |
982 | mad_agent_priv = container_of(send_buf->mad_agent, | |
983 | struct ib_mad_agent_private, agent); | |
f36e1793 JM |
984 | mad_send_wr = container_of(send_buf, struct ib_mad_send_wr_private, |
985 | send_buf); | |
824c8ae7 | 986 | |
f36e1793 JM |
987 | free_send_rmpp_list(mad_send_wr); |
988 | kfree(send_buf->mad); | |
1b52fa98 | 989 | deref_mad_agent(mad_agent_priv); |
824c8ae7 HR |
990 | } |
991 | EXPORT_SYMBOL(ib_free_send_mad); | |
992 | ||
fa619a77 | 993 | int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr) |
1da177e4 LT |
994 | { |
995 | struct ib_mad_qp_info *qp_info; | |
cabe3cbc | 996 | struct list_head *list; |
34816ad9 SH |
997 | struct ib_mad_agent *mad_agent; |
998 | struct ib_sge *sge; | |
1da177e4 LT |
999 | unsigned long flags; |
1000 | int ret; | |
1001 | ||
f8197a4e | 1002 | /* Set WR ID to find mad_send_wr upon completion */ |
d760ce8f | 1003 | qp_info = mad_send_wr->mad_agent_priv->qp_info; |
1da177e4 | 1004 | mad_send_wr->mad_list.mad_queue = &qp_info->send_queue; |
d53e11fd CH |
1005 | mad_send_wr->mad_list.cqe.done = ib_mad_send_done; |
1006 | mad_send_wr->send_wr.wr.wr_cqe = &mad_send_wr->mad_list.cqe; | |
1da177e4 | 1007 | |
34816ad9 SH |
1008 | mad_agent = mad_send_wr->send_buf.mad_agent; |
1009 | sge = mad_send_wr->sg_list; | |
1527106f RC |
1010 | sge[0].addr = ib_dma_map_single(mad_agent->device, |
1011 | mad_send_wr->send_buf.mad, | |
1012 | sge[0].length, | |
1013 | DMA_TO_DEVICE); | |
2c34e68f YB |
1014 | if (unlikely(ib_dma_mapping_error(mad_agent->device, sge[0].addr))) |
1015 | return -ENOMEM; | |
1016 | ||
1527106f RC |
1017 | mad_send_wr->header_mapping = sge[0].addr; |
1018 | ||
1019 | sge[1].addr = ib_dma_map_single(mad_agent->device, | |
1020 | ib_get_payload(mad_send_wr), | |
1021 | sge[1].length, | |
1022 | DMA_TO_DEVICE); | |
2c34e68f YB |
1023 | if (unlikely(ib_dma_mapping_error(mad_agent->device, sge[1].addr))) { |
1024 | ib_dma_unmap_single(mad_agent->device, | |
1025 | mad_send_wr->header_mapping, | |
1026 | sge[0].length, DMA_TO_DEVICE); | |
1027 | return -ENOMEM; | |
1028 | } | |
1527106f | 1029 | mad_send_wr->payload_mapping = sge[1].addr; |
34816ad9 | 1030 | |
1da177e4 | 1031 | spin_lock_irqsave(&qp_info->send_queue.lock, flags); |
cabe3cbc | 1032 | if (qp_info->send_queue.count < qp_info->send_queue.max_active) { |
4d60cad5 | 1033 | trace_ib_mad_ib_send_mad(mad_send_wr, qp_info); |
e622f2f4 | 1034 | ret = ib_post_send(mad_agent->qp, &mad_send_wr->send_wr.wr, |
1fec77bf | 1035 | NULL); |
cabe3cbc | 1036 | list = &qp_info->send_queue.list; |
1da177e4 | 1037 | } else { |
1da177e4 | 1038 | ret = 0; |
cabe3cbc | 1039 | list = &qp_info->overflow_list; |
1da177e4 | 1040 | } |
cabe3cbc HR |
1041 | |
1042 | if (!ret) { | |
1043 | qp_info->send_queue.count++; | |
1044 | list_add_tail(&mad_send_wr->mad_list.list, list); | |
1045 | } | |
1046 | spin_unlock_irqrestore(&qp_info->send_queue.lock, flags); | |
f36e1793 | 1047 | if (ret) { |
1527106f RC |
1048 | ib_dma_unmap_single(mad_agent->device, |
1049 | mad_send_wr->header_mapping, | |
1050 | sge[0].length, DMA_TO_DEVICE); | |
1051 | ib_dma_unmap_single(mad_agent->device, | |
1052 | mad_send_wr->payload_mapping, | |
1053 | sge[1].length, DMA_TO_DEVICE); | |
f36e1793 | 1054 | } |
1da177e4 LT |
1055 | return ret; |
1056 | } | |
1057 | ||
1058 | /* | |
1059 | * ib_post_send_mad - Posts MAD(s) to the send queue of the QP associated | |
1060 | * with the registered client | |
1061 | */ | |
34816ad9 SH |
1062 | int ib_post_send_mad(struct ib_mad_send_buf *send_buf, |
1063 | struct ib_mad_send_buf **bad_send_buf) | |
1da177e4 | 1064 | { |
1da177e4 | 1065 | struct ib_mad_agent_private *mad_agent_priv; |
34816ad9 SH |
1066 | struct ib_mad_send_buf *next_send_buf; |
1067 | struct ib_mad_send_wr_private *mad_send_wr; | |
1068 | unsigned long flags; | |
1069 | int ret = -EINVAL; | |
1da177e4 LT |
1070 | |
1071 | /* Walk list of send WRs and post each on send list */ | |
34816ad9 | 1072 | for (; send_buf; send_buf = next_send_buf) { |
34816ad9 SH |
1073 | mad_send_wr = container_of(send_buf, |
1074 | struct ib_mad_send_wr_private, | |
1075 | send_buf); | |
1076 | mad_agent_priv = mad_send_wr->mad_agent_priv; | |
1da177e4 | 1077 | |
47a2b338 DJ |
1078 | ret = ib_mad_enforce_security(mad_agent_priv, |
1079 | mad_send_wr->send_wr.pkey_index); | |
1080 | if (ret) | |
1081 | goto error; | |
1082 | ||
34816ad9 SH |
1083 | if (!send_buf->mad_agent->send_handler || |
1084 | (send_buf->timeout_ms && | |
1085 | !send_buf->mad_agent->recv_handler)) { | |
1086 | ret = -EINVAL; | |
1087 | goto error; | |
1da177e4 LT |
1088 | } |
1089 | ||
618a3c03 HR |
1090 | if (!ib_is_mad_class_rmpp(((struct ib_mad_hdr *) send_buf->mad)->mgmt_class)) { |
1091 | if (mad_agent_priv->agent.rmpp_version) { | |
1092 | ret = -EINVAL; | |
1093 | goto error; | |
1094 | } | |
1095 | } | |
1096 | ||
1da177e4 LT |
1097 | /* |
1098 | * Save pointer to next work request to post in case the | |
1099 | * current one completes, and the user modifies the work | |
1100 | * request associated with the completion | |
1101 | */ | |
34816ad9 | 1102 | next_send_buf = send_buf->next; |
e622f2f4 | 1103 | mad_send_wr->send_wr.ah = send_buf->ah; |
1da177e4 | 1104 | |
34816ad9 SH |
1105 | if (((struct ib_mad_hdr *) send_buf->mad)->mgmt_class == |
1106 | IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { | |
1107 | ret = handle_outgoing_dr_smp(mad_agent_priv, | |
1108 | mad_send_wr); | |
1da177e4 | 1109 | if (ret < 0) /* error */ |
34816ad9 | 1110 | goto error; |
1da177e4 | 1111 | else if (ret == 1) /* locally consumed */ |
34816ad9 | 1112 | continue; |
1da177e4 LT |
1113 | } |
1114 | ||
34816ad9 | 1115 | mad_send_wr->tid = ((struct ib_mad_hdr *) send_buf->mad)->tid; |
1da177e4 | 1116 | /* Timeout will be updated after send completes */ |
34816ad9 | 1117 | mad_send_wr->timeout = msecs_to_jiffies(send_buf->timeout_ms); |
4fc8cd49 SH |
1118 | mad_send_wr->max_retries = send_buf->retries; |
1119 | mad_send_wr->retries_left = send_buf->retries; | |
1120 | send_buf->retries = 0; | |
34816ad9 | 1121 | /* Reference for work request to QP + response */ |
1da177e4 LT |
1122 | mad_send_wr->refcount = 1 + (mad_send_wr->timeout > 0); |
1123 | mad_send_wr->status = IB_WC_SUCCESS; | |
1124 | ||
1125 | /* Reference MAD agent until send completes */ | |
e41c4253 | 1126 | refcount_inc(&mad_agent_priv->refcount); |
1da177e4 LT |
1127 | spin_lock_irqsave(&mad_agent_priv->lock, flags); |
1128 | list_add_tail(&mad_send_wr->agent_list, | |
1129 | &mad_agent_priv->send_list); | |
1130 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); | |
1131 | ||
1471cb6c | 1132 | if (ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent)) { |
fa619a77 HR |
1133 | ret = ib_send_rmpp_mad(mad_send_wr); |
1134 | if (ret >= 0 && ret != IB_RMPP_RESULT_CONSUMED) | |
1135 | ret = ib_send_mad(mad_send_wr); | |
1136 | } else | |
1137 | ret = ib_send_mad(mad_send_wr); | |
1138 | if (ret < 0) { | |
1da177e4 LT |
1139 | /* Fail send request */ |
1140 | spin_lock_irqsave(&mad_agent_priv->lock, flags); | |
1141 | list_del(&mad_send_wr->agent_list); | |
1142 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); | |
b9af0e2d | 1143 | deref_mad_agent(mad_agent_priv); |
34816ad9 | 1144 | goto error; |
1da177e4 | 1145 | } |
1da177e4 LT |
1146 | } |
1147 | return 0; | |
34816ad9 SH |
1148 | error: |
1149 | if (bad_send_buf) | |
1150 | *bad_send_buf = send_buf; | |
1da177e4 LT |
1151 | return ret; |
1152 | } | |
1153 | EXPORT_SYMBOL(ib_post_send_mad); | |
1154 | ||
1155 | /* | |
1156 | * ib_free_recv_mad - Returns data buffers used to receive | |
1157 | * a MAD to the access layer | |
1158 | */ | |
1159 | void ib_free_recv_mad(struct ib_mad_recv_wc *mad_recv_wc) | |
1160 | { | |
fa619a77 | 1161 | struct ib_mad_recv_buf *mad_recv_buf, *temp_recv_buf; |
1da177e4 LT |
1162 | struct ib_mad_private_header *mad_priv_hdr; |
1163 | struct ib_mad_private *priv; | |
fa619a77 | 1164 | struct list_head free_list; |
1da177e4 | 1165 | |
fa619a77 HR |
1166 | INIT_LIST_HEAD(&free_list); |
1167 | list_splice_init(&mad_recv_wc->rmpp_list, &free_list); | |
1da177e4 | 1168 | |
fa619a77 HR |
1169 | list_for_each_entry_safe(mad_recv_buf, temp_recv_buf, |
1170 | &free_list, list) { | |
1171 | mad_recv_wc = container_of(mad_recv_buf, struct ib_mad_recv_wc, | |
1172 | recv_buf); | |
1da177e4 LT |
1173 | mad_priv_hdr = container_of(mad_recv_wc, |
1174 | struct ib_mad_private_header, | |
1175 | recv_wc); | |
1176 | priv = container_of(mad_priv_hdr, struct ib_mad_private, | |
1177 | header); | |
c9082e51 | 1178 | kfree(priv); |
1da177e4 | 1179 | } |
1da177e4 LT |
1180 | } |
1181 | EXPORT_SYMBOL(ib_free_recv_mad); | |
1182 | ||
1da177e4 LT |
1183 | static int method_in_use(struct ib_mad_mgmt_method_table **method, |
1184 | struct ib_mad_reg_req *mad_reg_req) | |
1185 | { | |
1186 | int i; | |
1187 | ||
19b629f5 | 1188 | for_each_set_bit(i, mad_reg_req->method_mask, IB_MGMT_MAX_METHODS) { |
1da177e4 | 1189 | if ((*method)->agent[i]) { |
7ef5d4b0 | 1190 | pr_err("Method %d already in use\n", i); |
1da177e4 LT |
1191 | return -EINVAL; |
1192 | } | |
1193 | } | |
1194 | return 0; | |
1195 | } | |
1196 | ||
1197 | static int allocate_method_table(struct ib_mad_mgmt_method_table **method) | |
1198 | { | |
1199 | /* Allocate management method table */ | |
de6eb66b | 1200 | *method = kzalloc(sizeof **method, GFP_ATOMIC); |
27162432 | 1201 | return (*method) ? 0 : (-ENOMEM); |
1da177e4 LT |
1202 | } |
1203 | ||
1204 | /* | |
1205 | * Check to see if there are any methods still in use | |
1206 | */ | |
1207 | static int check_method_table(struct ib_mad_mgmt_method_table *method) | |
1208 | { | |
1209 | int i; | |
1210 | ||
1211 | for (i = 0; i < IB_MGMT_MAX_METHODS; i++) | |
1212 | if (method->agent[i]) | |
1213 | return 1; | |
1214 | return 0; | |
1215 | } | |
1216 | ||
1217 | /* | |
1218 | * Check to see if there are any method tables for this class still in use | |
1219 | */ | |
1220 | static int check_class_table(struct ib_mad_mgmt_class_table *class) | |
1221 | { | |
1222 | int i; | |
1223 | ||
1224 | for (i = 0; i < MAX_MGMT_CLASS; i++) | |
1225 | if (class->method_table[i]) | |
1226 | return 1; | |
1227 | return 0; | |
1228 | } | |
1229 | ||
1230 | static int check_vendor_class(struct ib_mad_mgmt_vendor_class *vendor_class) | |
1231 | { | |
1232 | int i; | |
1233 | ||
1234 | for (i = 0; i < MAX_MGMT_OUI; i++) | |
1235 | if (vendor_class->method_table[i]) | |
1236 | return 1; | |
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | static int find_vendor_oui(struct ib_mad_mgmt_vendor_class *vendor_class, | |
d94bd266 | 1241 | const char *oui) |
1da177e4 LT |
1242 | { |
1243 | int i; | |
1244 | ||
1245 | for (i = 0; i < MAX_MGMT_OUI; i++) | |
3cd96564 RD |
1246 | /* Is there matching OUI for this vendor class ? */ |
1247 | if (!memcmp(vendor_class->oui[i], oui, 3)) | |
1da177e4 LT |
1248 | return i; |
1249 | ||
1250 | return -1; | |
1251 | } | |
1252 | ||
1253 | static int check_vendor_table(struct ib_mad_mgmt_vendor_class_table *vendor) | |
1254 | { | |
1255 | int i; | |
1256 | ||
1257 | for (i = 0; i < MAX_MGMT_VENDOR_RANGE2; i++) | |
1258 | if (vendor->vendor_class[i]) | |
1259 | return 1; | |
1260 | ||
1261 | return 0; | |
1262 | } | |
1263 | ||
1264 | static void remove_methods_mad_agent(struct ib_mad_mgmt_method_table *method, | |
1265 | struct ib_mad_agent_private *agent) | |
1266 | { | |
1267 | int i; | |
1268 | ||
1269 | /* Remove any methods for this mad agent */ | |
b6eb7011 WL |
1270 | for (i = 0; i < IB_MGMT_MAX_METHODS; i++) |
1271 | if (method->agent[i] == agent) | |
1da177e4 | 1272 | method->agent[i] = NULL; |
1da177e4 LT |
1273 | } |
1274 | ||
1275 | static int add_nonoui_reg_req(struct ib_mad_reg_req *mad_reg_req, | |
1276 | struct ib_mad_agent_private *agent_priv, | |
1277 | u8 mgmt_class) | |
1278 | { | |
1279 | struct ib_mad_port_private *port_priv; | |
1280 | struct ib_mad_mgmt_class_table **class; | |
1281 | struct ib_mad_mgmt_method_table **method; | |
1282 | int i, ret; | |
1283 | ||
1284 | port_priv = agent_priv->qp_info->port_priv; | |
1285 | class = &port_priv->version[mad_reg_req->mgmt_class_version].class; | |
1286 | if (!*class) { | |
1287 | /* Allocate management class table for "new" class version */ | |
de6eb66b | 1288 | *class = kzalloc(sizeof **class, GFP_ATOMIC); |
1da177e4 | 1289 | if (!*class) { |
1da177e4 LT |
1290 | ret = -ENOMEM; |
1291 | goto error1; | |
1292 | } | |
de6eb66b | 1293 | |
1da177e4 LT |
1294 | /* Allocate method table for this management class */ |
1295 | method = &(*class)->method_table[mgmt_class]; | |
1296 | if ((ret = allocate_method_table(method))) | |
1297 | goto error2; | |
1298 | } else { | |
1299 | method = &(*class)->method_table[mgmt_class]; | |
1300 | if (!*method) { | |
1301 | /* Allocate method table for this management class */ | |
1302 | if ((ret = allocate_method_table(method))) | |
1303 | goto error1; | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | /* Now, make sure methods are not already in use */ | |
1308 | if (method_in_use(method, mad_reg_req)) | |
1309 | goto error3; | |
1310 | ||
1311 | /* Finally, add in methods being registered */ | |
19b629f5 | 1312 | for_each_set_bit(i, mad_reg_req->method_mask, IB_MGMT_MAX_METHODS) |
1da177e4 | 1313 | (*method)->agent[i] = agent_priv; |
19b629f5 | 1314 | |
1da177e4 LT |
1315 | return 0; |
1316 | ||
1317 | error3: | |
1318 | /* Remove any methods for this mad agent */ | |
1319 | remove_methods_mad_agent(*method, agent_priv); | |
1320 | /* Now, check to see if there are any methods in use */ | |
1321 | if (!check_method_table(*method)) { | |
1322 | /* If not, release management method table */ | |
1323 | kfree(*method); | |
1324 | *method = NULL; | |
1325 | } | |
1326 | ret = -EINVAL; | |
1327 | goto error1; | |
1328 | error2: | |
1329 | kfree(*class); | |
1330 | *class = NULL; | |
1331 | error1: | |
1332 | return ret; | |
1333 | } | |
1334 | ||
1335 | static int add_oui_reg_req(struct ib_mad_reg_req *mad_reg_req, | |
1336 | struct ib_mad_agent_private *agent_priv) | |
1337 | { | |
1338 | struct ib_mad_port_private *port_priv; | |
1339 | struct ib_mad_mgmt_vendor_class_table **vendor_table; | |
1340 | struct ib_mad_mgmt_vendor_class_table *vendor = NULL; | |
1341 | struct ib_mad_mgmt_vendor_class *vendor_class = NULL; | |
1342 | struct ib_mad_mgmt_method_table **method; | |
1343 | int i, ret = -ENOMEM; | |
1344 | u8 vclass; | |
1345 | ||
1346 | /* "New" vendor (with OUI) class */ | |
1347 | vclass = vendor_class_index(mad_reg_req->mgmt_class); | |
1348 | port_priv = agent_priv->qp_info->port_priv; | |
1349 | vendor_table = &port_priv->version[ | |
1350 | mad_reg_req->mgmt_class_version].vendor; | |
1351 | if (!*vendor_table) { | |
1352 | /* Allocate mgmt vendor class table for "new" class version */ | |
de6eb66b | 1353 | vendor = kzalloc(sizeof *vendor, GFP_ATOMIC); |
27162432 | 1354 | if (!vendor) |
1da177e4 | 1355 | goto error1; |
de6eb66b | 1356 | |
1da177e4 LT |
1357 | *vendor_table = vendor; |
1358 | } | |
1359 | if (!(*vendor_table)->vendor_class[vclass]) { | |
1360 | /* Allocate table for this management vendor class */ | |
de6eb66b | 1361 | vendor_class = kzalloc(sizeof *vendor_class, GFP_ATOMIC); |
27162432 | 1362 | if (!vendor_class) |
1da177e4 | 1363 | goto error2; |
de6eb66b | 1364 | |
1da177e4 LT |
1365 | (*vendor_table)->vendor_class[vclass] = vendor_class; |
1366 | } | |
1367 | for (i = 0; i < MAX_MGMT_OUI; i++) { | |
1368 | /* Is there matching OUI for this vendor class ? */ | |
1369 | if (!memcmp((*vendor_table)->vendor_class[vclass]->oui[i], | |
1370 | mad_reg_req->oui, 3)) { | |
1371 | method = &(*vendor_table)->vendor_class[ | |
1372 | vclass]->method_table[i]; | |
2468b82d LR |
1373 | if (!*method) |
1374 | goto error3; | |
1da177e4 LT |
1375 | goto check_in_use; |
1376 | } | |
1377 | } | |
1378 | for (i = 0; i < MAX_MGMT_OUI; i++) { | |
1379 | /* OUI slot available ? */ | |
1380 | if (!is_vendor_oui((*vendor_table)->vendor_class[ | |
1381 | vclass]->oui[i])) { | |
1382 | method = &(*vendor_table)->vendor_class[ | |
1383 | vclass]->method_table[i]; | |
1da177e4 | 1384 | /* Allocate method table for this OUI */ |
2468b82d LR |
1385 | if (!*method) { |
1386 | ret = allocate_method_table(method); | |
1387 | if (ret) | |
1388 | goto error3; | |
1389 | } | |
1da177e4 LT |
1390 | memcpy((*vendor_table)->vendor_class[vclass]->oui[i], |
1391 | mad_reg_req->oui, 3); | |
1392 | goto check_in_use; | |
1393 | } | |
1394 | } | |
7ef5d4b0 | 1395 | dev_err(&agent_priv->agent.device->dev, "All OUI slots in use\n"); |
1da177e4 LT |
1396 | goto error3; |
1397 | ||
1398 | check_in_use: | |
1399 | /* Now, make sure methods are not already in use */ | |
1400 | if (method_in_use(method, mad_reg_req)) | |
1401 | goto error4; | |
1402 | ||
1403 | /* Finally, add in methods being registered */ | |
19b629f5 | 1404 | for_each_set_bit(i, mad_reg_req->method_mask, IB_MGMT_MAX_METHODS) |
1da177e4 | 1405 | (*method)->agent[i] = agent_priv; |
19b629f5 | 1406 | |
1da177e4 LT |
1407 | return 0; |
1408 | ||
1409 | error4: | |
1410 | /* Remove any methods for this mad agent */ | |
1411 | remove_methods_mad_agent(*method, agent_priv); | |
1412 | /* Now, check to see if there are any methods in use */ | |
1413 | if (!check_method_table(*method)) { | |
1414 | /* If not, release management method table */ | |
1415 | kfree(*method); | |
1416 | *method = NULL; | |
1417 | } | |
1418 | ret = -EINVAL; | |
1419 | error3: | |
1420 | if (vendor_class) { | |
1421 | (*vendor_table)->vendor_class[vclass] = NULL; | |
1422 | kfree(vendor_class); | |
1423 | } | |
1424 | error2: | |
1425 | if (vendor) { | |
1426 | *vendor_table = NULL; | |
1427 | kfree(vendor); | |
1428 | } | |
1429 | error1: | |
1430 | return ret; | |
1431 | } | |
1432 | ||
1433 | static void remove_mad_reg_req(struct ib_mad_agent_private *agent_priv) | |
1434 | { | |
1435 | struct ib_mad_port_private *port_priv; | |
1436 | struct ib_mad_mgmt_class_table *class; | |
1437 | struct ib_mad_mgmt_method_table *method; | |
1438 | struct ib_mad_mgmt_vendor_class_table *vendor; | |
1439 | struct ib_mad_mgmt_vendor_class *vendor_class; | |
1440 | int index; | |
1441 | u8 mgmt_class; | |
1442 | ||
1443 | /* | |
1444 | * Was MAD registration request supplied | |
1445 | * with original registration ? | |
1446 | */ | |
b6eb7011 | 1447 | if (!agent_priv->reg_req) |
1da177e4 | 1448 | goto out; |
1da177e4 LT |
1449 | |
1450 | port_priv = agent_priv->qp_info->port_priv; | |
1451 | mgmt_class = convert_mgmt_class(agent_priv->reg_req->mgmt_class); | |
1452 | class = port_priv->version[ | |
1453 | agent_priv->reg_req->mgmt_class_version].class; | |
1454 | if (!class) | |
1455 | goto vendor_check; | |
1456 | ||
1457 | method = class->method_table[mgmt_class]; | |
1458 | if (method) { | |
1459 | /* Remove any methods for this mad agent */ | |
1460 | remove_methods_mad_agent(method, agent_priv); | |
1461 | /* Now, check to see if there are any methods still in use */ | |
1462 | if (!check_method_table(method)) { | |
1463 | /* If not, release management method table */ | |
2190d10d BVA |
1464 | kfree(method); |
1465 | class->method_table[mgmt_class] = NULL; | |
1466 | /* Any management classes left ? */ | |
1da177e4 LT |
1467 | if (!check_class_table(class)) { |
1468 | /* If not, release management class table */ | |
1469 | kfree(class); | |
1470 | port_priv->version[ | |
1471 | agent_priv->reg_req-> | |
1472 | mgmt_class_version].class = NULL; | |
1473 | } | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | vendor_check: | |
1478 | if (!is_vendor_class(mgmt_class)) | |
1479 | goto out; | |
1480 | ||
1481 | /* normalize mgmt_class to vendor range 2 */ | |
1482 | mgmt_class = vendor_class_index(agent_priv->reg_req->mgmt_class); | |
1483 | vendor = port_priv->version[ | |
1484 | agent_priv->reg_req->mgmt_class_version].vendor; | |
1485 | ||
1486 | if (!vendor) | |
1487 | goto out; | |
1488 | ||
1489 | vendor_class = vendor->vendor_class[mgmt_class]; | |
1490 | if (vendor_class) { | |
1491 | index = find_vendor_oui(vendor_class, agent_priv->reg_req->oui); | |
1492 | if (index < 0) | |
1493 | goto out; | |
1494 | method = vendor_class->method_table[index]; | |
1495 | if (method) { | |
1496 | /* Remove any methods for this mad agent */ | |
1497 | remove_methods_mad_agent(method, agent_priv); | |
1498 | /* | |
1499 | * Now, check to see if there are | |
1500 | * any methods still in use | |
1501 | */ | |
1502 | if (!check_method_table(method)) { | |
1503 | /* If not, release management method table */ | |
1504 | kfree(method); | |
1505 | vendor_class->method_table[index] = NULL; | |
1506 | memset(vendor_class->oui[index], 0, 3); | |
1507 | /* Any OUIs left ? */ | |
1508 | if (!check_vendor_class(vendor_class)) { | |
1509 | /* If not, release vendor class table */ | |
1510 | kfree(vendor_class); | |
1511 | vendor->vendor_class[mgmt_class] = NULL; | |
1512 | /* Any other vendor classes left ? */ | |
1513 | if (!check_vendor_table(vendor)) { | |
1514 | kfree(vendor); | |
1515 | port_priv->version[ | |
1516 | agent_priv->reg_req-> | |
1517 | mgmt_class_version]. | |
1518 | vendor = NULL; | |
1519 | } | |
1520 | } | |
1521 | } | |
1522 | } | |
1523 | } | |
1524 | ||
1525 | out: | |
1526 | return; | |
1527 | } | |
1528 | ||
1da177e4 LT |
1529 | static struct ib_mad_agent_private * |
1530 | find_mad_agent(struct ib_mad_port_private *port_priv, | |
d94bd266 | 1531 | const struct ib_mad_hdr *mad_hdr) |
1da177e4 LT |
1532 | { |
1533 | struct ib_mad_agent_private *mad_agent = NULL; | |
1534 | unsigned long flags; | |
1535 | ||
d94bd266 | 1536 | if (ib_response_mad(mad_hdr)) { |
1da177e4 | 1537 | u32 hi_tid; |
1da177e4 LT |
1538 | |
1539 | /* | |
1540 | * Routing is based on high 32 bits of transaction ID | |
1541 | * of MAD. | |
1542 | */ | |
d94bd266 | 1543 | hi_tid = be64_to_cpu(mad_hdr->tid) >> 32; |
9a41e38a | 1544 | rcu_read_lock(); |
949a2370 | 1545 | mad_agent = xa_load(&ib_mad_clients, hi_tid); |
e41c4253 | 1546 | if (mad_agent && !refcount_inc_not_zero(&mad_agent->refcount)) |
9a41e38a | 1547 | mad_agent = NULL; |
1548 | rcu_read_unlock(); | |
1da177e4 LT |
1549 | } else { |
1550 | struct ib_mad_mgmt_class_table *class; | |
1551 | struct ib_mad_mgmt_method_table *method; | |
1552 | struct ib_mad_mgmt_vendor_class_table *vendor; | |
1553 | struct ib_mad_mgmt_vendor_class *vendor_class; | |
d94bd266 | 1554 | const struct ib_vendor_mad *vendor_mad; |
1da177e4 LT |
1555 | int index; |
1556 | ||
9a41e38a | 1557 | spin_lock_irqsave(&port_priv->reg_lock, flags); |
1da177e4 LT |
1558 | /* |
1559 | * Routing is based on version, class, and method | |
1560 | * For "newer" vendor MADs, also based on OUI | |
1561 | */ | |
d94bd266 | 1562 | if (mad_hdr->class_version >= MAX_MGMT_VERSION) |
1da177e4 | 1563 | goto out; |
d94bd266 | 1564 | if (!is_vendor_class(mad_hdr->mgmt_class)) { |
1da177e4 | 1565 | class = port_priv->version[ |
d94bd266 | 1566 | mad_hdr->class_version].class; |
1da177e4 LT |
1567 | if (!class) |
1568 | goto out; | |
d94bd266 | 1569 | if (convert_mgmt_class(mad_hdr->mgmt_class) >= |
2fe2f378 | 1570 | ARRAY_SIZE(class->method_table)) |
b7ab0b19 | 1571 | goto out; |
1da177e4 | 1572 | method = class->method_table[convert_mgmt_class( |
d94bd266 | 1573 | mad_hdr->mgmt_class)]; |
1da177e4 | 1574 | if (method) |
d94bd266 | 1575 | mad_agent = method->agent[mad_hdr->method & |
1da177e4 LT |
1576 | ~IB_MGMT_METHOD_RESP]; |
1577 | } else { | |
1578 | vendor = port_priv->version[ | |
d94bd266 | 1579 | mad_hdr->class_version].vendor; |
1da177e4 LT |
1580 | if (!vendor) |
1581 | goto out; | |
1582 | vendor_class = vendor->vendor_class[vendor_class_index( | |
d94bd266 | 1583 | mad_hdr->mgmt_class)]; |
1da177e4 LT |
1584 | if (!vendor_class) |
1585 | goto out; | |
1586 | /* Find matching OUI */ | |
d94bd266 | 1587 | vendor_mad = (const struct ib_vendor_mad *)mad_hdr; |
1da177e4 LT |
1588 | index = find_vendor_oui(vendor_class, vendor_mad->oui); |
1589 | if (index == -1) | |
1590 | goto out; | |
1591 | method = vendor_class->method_table[index]; | |
1592 | if (method) { | |
d94bd266 | 1593 | mad_agent = method->agent[mad_hdr->method & |
1da177e4 LT |
1594 | ~IB_MGMT_METHOD_RESP]; |
1595 | } | |
1596 | } | |
9a41e38a | 1597 | if (mad_agent) |
e41c4253 | 1598 | refcount_inc(&mad_agent->refcount); |
9a41e38a | 1599 | out: |
1600 | spin_unlock_irqrestore(&port_priv->reg_lock, flags); | |
1da177e4 LT |
1601 | } |
1602 | ||
9a41e38a | 1603 | if (mad_agent && !mad_agent->agent.recv_handler) { |
1604 | dev_notice(&port_priv->device->dev, | |
1fb7f897 | 1605 | "No receive handler for client %p on port %u\n", |
9a41e38a | 1606 | &mad_agent->agent, port_priv->port_num); |
1607 | deref_mad_agent(mad_agent); | |
1608 | mad_agent = NULL; | |
1da177e4 | 1609 | } |
1da177e4 LT |
1610 | |
1611 | return mad_agent; | |
1612 | } | |
1613 | ||
8e4349d1 IW |
1614 | static int validate_mad(const struct ib_mad_hdr *mad_hdr, |
1615 | const struct ib_mad_qp_info *qp_info, | |
1616 | bool opa) | |
1da177e4 LT |
1617 | { |
1618 | int valid = 0; | |
8e4349d1 | 1619 | u32 qp_num = qp_info->qp->qp_num; |
1da177e4 LT |
1620 | |
1621 | /* Make sure MAD base version is understood */ | |
8e4349d1 IW |
1622 | if (mad_hdr->base_version != IB_MGMT_BASE_VERSION && |
1623 | (!opa || mad_hdr->base_version != OPA_MGMT_BASE_VERSION)) { | |
3cea7b4a | 1624 | pr_err("MAD received with unsupported base version %u %s\n", |
8e4349d1 | 1625 | mad_hdr->base_version, opa ? "(opa)" : ""); |
1da177e4 LT |
1626 | goto out; |
1627 | } | |
1628 | ||
1629 | /* Filter SMI packets sent to other than QP0 */ | |
77f60833 IW |
1630 | if ((mad_hdr->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED) || |
1631 | (mad_hdr->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) { | |
1da177e4 LT |
1632 | if (qp_num == 0) |
1633 | valid = 1; | |
1634 | } else { | |
53370886 HR |
1635 | /* CM attributes other than ClassPortInfo only use Send method */ |
1636 | if ((mad_hdr->mgmt_class == IB_MGMT_CLASS_CM) && | |
1637 | (mad_hdr->attr_id != IB_MGMT_CLASSPORTINFO_ATTR_ID) && | |
1638 | (mad_hdr->method != IB_MGMT_METHOD_SEND)) | |
1639 | goto out; | |
1da177e4 LT |
1640 | /* Filter GSI packets sent to QP0 */ |
1641 | if (qp_num != 0) | |
1642 | valid = 1; | |
1643 | } | |
1644 | ||
1645 | out: | |
1646 | return valid; | |
1647 | } | |
1648 | ||
f766c58f IW |
1649 | static int is_rmpp_data_mad(const struct ib_mad_agent_private *mad_agent_priv, |
1650 | const struct ib_mad_hdr *mad_hdr) | |
fa619a77 HR |
1651 | { |
1652 | struct ib_rmpp_mad *rmpp_mad; | |
1653 | ||
1654 | rmpp_mad = (struct ib_rmpp_mad *)mad_hdr; | |
1655 | return !mad_agent_priv->agent.rmpp_version || | |
1471cb6c | 1656 | !ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent) || |
fa619a77 HR |
1657 | !(ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & |
1658 | IB_MGMT_RMPP_FLAG_ACTIVE) || | |
1659 | (rmpp_mad->rmpp_hdr.rmpp_type == IB_MGMT_RMPP_TYPE_DATA); | |
1660 | } | |
1661 | ||
8bf4b30c IW |
1662 | static inline int rcv_has_same_class(const struct ib_mad_send_wr_private *wr, |
1663 | const struct ib_mad_recv_wc *rwc) | |
fa9656bb | 1664 | { |
8bf4b30c | 1665 | return ((struct ib_mad_hdr *)(wr->send_buf.mad))->mgmt_class == |
fa9656bb JM |
1666 | rwc->recv_buf.mad->mad_hdr.mgmt_class; |
1667 | } | |
1668 | ||
f681967a WL |
1669 | static inline int |
1670 | rcv_has_same_gid(const struct ib_mad_agent_private *mad_agent_priv, | |
1671 | const struct ib_mad_send_wr_private *wr, | |
1672 | const struct ib_mad_recv_wc *rwc) | |
fa9656bb | 1673 | { |
90898850 | 1674 | struct rdma_ah_attr attr; |
fa9656bb | 1675 | u8 send_resp, rcv_resp; |
9874e746 JM |
1676 | union ib_gid sgid; |
1677 | struct ib_device *device = mad_agent_priv->agent.device; | |
1fb7f897 | 1678 | u32 port_num = mad_agent_priv->agent.port_num; |
9874e746 | 1679 | u8 lmc; |
d8966fcd | 1680 | bool has_grh; |
fa9656bb | 1681 | |
96909308 IW |
1682 | send_resp = ib_response_mad((struct ib_mad_hdr *)wr->send_buf.mad); |
1683 | rcv_resp = ib_response_mad(&rwc->recv_buf.mad->mad_hdr); | |
fa9656bb | 1684 | |
fa9656bb JM |
1685 | if (send_resp == rcv_resp) |
1686 | /* both requests, or both responses. GIDs different */ | |
1687 | return 0; | |
1688 | ||
bfbfd661 | 1689 | if (rdma_query_ah(wr->send_buf.ah, &attr)) |
fa9656bb JM |
1690 | /* Assume not equal, to avoid false positives. */ |
1691 | return 0; | |
1692 | ||
d8966fcd DC |
1693 | has_grh = !!(rdma_ah_get_ah_flags(&attr) & IB_AH_GRH); |
1694 | if (has_grh != !!(rwc->wc->wc_flags & IB_WC_GRH)) | |
fa9656bb JM |
1695 | /* one has GID, other does not. Assume different */ |
1696 | return 0; | |
9874e746 JM |
1697 | |
1698 | if (!send_resp && rcv_resp) { | |
1699 | /* is request/response. */ | |
d8966fcd | 1700 | if (!has_grh) { |
9874e746 JM |
1701 | if (ib_get_cached_lmc(device, port_num, &lmc)) |
1702 | return 0; | |
d8966fcd | 1703 | return (!lmc || !((rdma_ah_get_path_bits(&attr) ^ |
9874e746 JM |
1704 | rwc->wc->dlid_path_bits) & |
1705 | ((1 << lmc) - 1))); | |
1706 | } else { | |
d8966fcd DC |
1707 | const struct ib_global_route *grh = |
1708 | rdma_ah_read_grh(&attr); | |
1709 | ||
1dfce294 PP |
1710 | if (rdma_query_gid(device, port_num, |
1711 | grh->sgid_index, &sgid)) | |
9874e746 JM |
1712 | return 0; |
1713 | return !memcmp(sgid.raw, rwc->recv_buf.grh->dgid.raw, | |
1714 | 16); | |
1715 | } | |
1716 | } | |
1717 | ||
d8966fcd DC |
1718 | if (!has_grh) |
1719 | return rdma_ah_get_dlid(&attr) == rwc->wc->slid; | |
9874e746 | 1720 | else |
d8966fcd DC |
1721 | return !memcmp(rdma_ah_read_grh(&attr)->dgid.raw, |
1722 | rwc->recv_buf.grh->sgid.raw, | |
9874e746 JM |
1723 | 16); |
1724 | } | |
1725 | ||
1726 | static inline int is_direct(u8 class) | |
1727 | { | |
1728 | return (class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE); | |
fa9656bb | 1729 | } |
9874e746 | 1730 | |
fa619a77 | 1731 | struct ib_mad_send_wr_private* |
f766c58f IW |
1732 | ib_find_send_mad(const struct ib_mad_agent_private *mad_agent_priv, |
1733 | const struct ib_mad_recv_wc *wc) | |
1da177e4 | 1734 | { |
9874e746 | 1735 | struct ib_mad_send_wr_private *wr; |
83a1d228 | 1736 | const struct ib_mad_hdr *mad_hdr; |
fa9656bb | 1737 | |
83a1d228 | 1738 | mad_hdr = &wc->recv_buf.mad->mad_hdr; |
9874e746 JM |
1739 | |
1740 | list_for_each_entry(wr, &mad_agent_priv->wait_list, agent_list) { | |
83a1d228 | 1741 | if ((wr->tid == mad_hdr->tid) && |
9874e746 JM |
1742 | rcv_has_same_class(wr, wc) && |
1743 | /* | |
1744 | * Don't check GID for direct routed MADs. | |
1745 | * These might have permissive LIDs. | |
1746 | */ | |
83a1d228 | 1747 | (is_direct(mad_hdr->mgmt_class) || |
9874e746 | 1748 | rcv_has_same_gid(mad_agent_priv, wr, wc))) |
39798695 | 1749 | return (wr->status == IB_WC_SUCCESS) ? wr : NULL; |
1da177e4 LT |
1750 | } |
1751 | ||
1752 | /* | |
1753 | * It's possible to receive the response before we've | |
1754 | * been notified that the send has completed | |
1755 | */ | |
9874e746 | 1756 | list_for_each_entry(wr, &mad_agent_priv->send_list, agent_list) { |
c597eee5 | 1757 | if (is_rmpp_data_mad(mad_agent_priv, wr->send_buf.mad) && |
83a1d228 | 1758 | wr->tid == mad_hdr->tid && |
9874e746 JM |
1759 | wr->timeout && |
1760 | rcv_has_same_class(wr, wc) && | |
1761 | /* | |
1762 | * Don't check GID for direct routed MADs. | |
1763 | * These might have permissive LIDs. | |
1764 | */ | |
83a1d228 | 1765 | (is_direct(mad_hdr->mgmt_class) || |
9874e746 | 1766 | rcv_has_same_gid(mad_agent_priv, wr, wc))) |
1da177e4 | 1767 | /* Verify request has not been canceled */ |
9874e746 | 1768 | return (wr->status == IB_WC_SUCCESS) ? wr : NULL; |
1da177e4 LT |
1769 | } |
1770 | return NULL; | |
1771 | } | |
1772 | ||
fa619a77 | 1773 | void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr) |
6a0c435e HR |
1774 | { |
1775 | mad_send_wr->timeout = 0; | |
179e0917 AM |
1776 | if (mad_send_wr->refcount == 1) |
1777 | list_move_tail(&mad_send_wr->agent_list, | |
6a0c435e | 1778 | &mad_send_wr->mad_agent_priv->done_list); |
6a0c435e HR |
1779 | } |
1780 | ||
1da177e4 | 1781 | static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv, |
4a0754fa | 1782 | struct ib_mad_recv_wc *mad_recv_wc) |
1da177e4 LT |
1783 | { |
1784 | struct ib_mad_send_wr_private *mad_send_wr; | |
1785 | struct ib_mad_send_wc mad_send_wc; | |
1786 | unsigned long flags; | |
47a2b338 DJ |
1787 | int ret; |
1788 | ||
89548bca | 1789 | INIT_LIST_HEAD(&mad_recv_wc->rmpp_list); |
47a2b338 DJ |
1790 | ret = ib_mad_enforce_security(mad_agent_priv, |
1791 | mad_recv_wc->wc->pkey_index); | |
1792 | if (ret) { | |
1793 | ib_free_recv_mad(mad_recv_wc); | |
1794 | deref_mad_agent(mad_agent_priv); | |
89548bca | 1795 | return; |
47a2b338 | 1796 | } |
1da177e4 | 1797 | |
fa619a77 | 1798 | list_add(&mad_recv_wc->recv_buf.list, &mad_recv_wc->rmpp_list); |
1471cb6c | 1799 | if (ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent)) { |
fa619a77 HR |
1800 | mad_recv_wc = ib_process_rmpp_recv_wc(mad_agent_priv, |
1801 | mad_recv_wc); | |
1802 | if (!mad_recv_wc) { | |
1b52fa98 | 1803 | deref_mad_agent(mad_agent_priv); |
fa619a77 HR |
1804 | return; |
1805 | } | |
1806 | } | |
1807 | ||
1da177e4 | 1808 | /* Complete corresponding request */ |
96909308 | 1809 | if (ib_response_mad(&mad_recv_wc->recv_buf.mad->mad_hdr)) { |
1da177e4 | 1810 | spin_lock_irqsave(&mad_agent_priv->lock, flags); |
fa9656bb | 1811 | mad_send_wr = ib_find_send_mad(mad_agent_priv, mad_recv_wc); |
1da177e4 LT |
1812 | if (!mad_send_wr) { |
1813 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); | |
1471cb6c IW |
1814 | if (!ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent) |
1815 | && ib_is_mad_class_rmpp(mad_recv_wc->recv_buf.mad->mad_hdr.mgmt_class) | |
1816 | && (ib_get_rmpp_flags(&((struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad)->rmpp_hdr) | |
1817 | & IB_MGMT_RMPP_FLAG_ACTIVE)) { | |
1818 | /* user rmpp is in effect | |
1819 | * and this is an active RMPP MAD | |
1820 | */ | |
ca281265 CH |
1821 | mad_agent_priv->agent.recv_handler( |
1822 | &mad_agent_priv->agent, NULL, | |
1823 | mad_recv_wc); | |
b9af0e2d | 1824 | deref_mad_agent(mad_agent_priv); |
1471cb6c IW |
1825 | } else { |
1826 | /* not user rmpp, revert to normal behavior and | |
26caea5f WL |
1827 | * drop the mad |
1828 | */ | |
1471cb6c IW |
1829 | ib_free_recv_mad(mad_recv_wc); |
1830 | deref_mad_agent(mad_agent_priv); | |
1831 | return; | |
1832 | } | |
1833 | } else { | |
1834 | ib_mark_mad_done(mad_send_wr); | |
1835 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); | |
1da177e4 | 1836 | |
1471cb6c | 1837 | /* Defined behavior is to complete response before request */ |
ca281265 CH |
1838 | mad_agent_priv->agent.recv_handler( |
1839 | &mad_agent_priv->agent, | |
1840 | &mad_send_wr->send_buf, | |
1841 | mad_recv_wc); | |
b9af0e2d | 1842 | deref_mad_agent(mad_agent_priv); |
1da177e4 | 1843 | |
1471cb6c IW |
1844 | mad_send_wc.status = IB_WC_SUCCESS; |
1845 | mad_send_wc.vendor_err = 0; | |
1846 | mad_send_wc.send_buf = &mad_send_wr->send_buf; | |
1847 | ib_mad_complete_send_wr(mad_send_wr, &mad_send_wc); | |
1848 | } | |
1da177e4 | 1849 | } else { |
ca281265 | 1850 | mad_agent_priv->agent.recv_handler(&mad_agent_priv->agent, NULL, |
4a0754fa | 1851 | mad_recv_wc); |
1b52fa98 | 1852 | deref_mad_agent(mad_agent_priv); |
1da177e4 LT |
1853 | } |
1854 | } | |
1855 | ||
e11ae8aa IW |
1856 | static enum smi_action handle_ib_smi(const struct ib_mad_port_private *port_priv, |
1857 | const struct ib_mad_qp_info *qp_info, | |
1858 | const struct ib_wc *wc, | |
1fb7f897 | 1859 | u32 port_num, |
e11ae8aa IW |
1860 | struct ib_mad_private *recv, |
1861 | struct ib_mad_private *response) | |
1862 | { | |
1863 | enum smi_forward_action retsmi; | |
c9082e51 | 1864 | struct ib_smp *smp = (struct ib_smp *)recv->mad; |
e11ae8aa | 1865 | |
2ccfbb70 IW |
1866 | trace_ib_mad_handle_ib_smi(smp); |
1867 | ||
c9082e51 | 1868 | if (smi_handle_dr_smp_recv(smp, |
4139032b | 1869 | rdma_cap_ib_switch(port_priv->device), |
e11ae8aa IW |
1870 | port_num, |
1871 | port_priv->device->phys_port_cnt) == | |
1872 | IB_SMI_DISCARD) | |
1873 | return IB_SMI_DISCARD; | |
1874 | ||
c9082e51 | 1875 | retsmi = smi_check_forward_dr_smp(smp); |
e11ae8aa IW |
1876 | if (retsmi == IB_SMI_LOCAL) |
1877 | return IB_SMI_HANDLE; | |
1878 | ||
1879 | if (retsmi == IB_SMI_SEND) { /* don't forward */ | |
c9082e51 | 1880 | if (smi_handle_dr_smp_send(smp, |
4139032b | 1881 | rdma_cap_ib_switch(port_priv->device), |
e11ae8aa IW |
1882 | port_num) == IB_SMI_DISCARD) |
1883 | return IB_SMI_DISCARD; | |
1884 | ||
c9082e51 | 1885 | if (smi_check_local_smp(smp, port_priv->device) == IB_SMI_DISCARD) |
e11ae8aa | 1886 | return IB_SMI_DISCARD; |
4139032b | 1887 | } else if (rdma_cap_ib_switch(port_priv->device)) { |
e11ae8aa | 1888 | /* forward case for switches */ |
c9082e51 | 1889 | memcpy(response, recv, mad_priv_size(response)); |
e11ae8aa | 1890 | response->header.recv_wc.wc = &response->header.wc; |
c9082e51 | 1891 | response->header.recv_wc.recv_buf.mad = (struct ib_mad *)response->mad; |
e11ae8aa IW |
1892 | response->header.recv_wc.recv_buf.grh = &response->grh; |
1893 | ||
c9082e51 | 1894 | agent_send_response((const struct ib_mad_hdr *)response->mad, |
e11ae8aa IW |
1895 | &response->grh, wc, |
1896 | port_priv->device, | |
c9082e51 IW |
1897 | smi_get_fwd_port(smp), |
1898 | qp_info->qp->qp_num, | |
8e4349d1 IW |
1899 | response->mad_size, |
1900 | false); | |
e11ae8aa IW |
1901 | |
1902 | return IB_SMI_DISCARD; | |
1903 | } | |
1904 | return IB_SMI_HANDLE; | |
1905 | } | |
1906 | ||
c9082e51 | 1907 | static bool generate_unmatched_resp(const struct ib_mad_private *recv, |
8e4349d1 IW |
1908 | struct ib_mad_private *response, |
1909 | size_t *resp_len, bool opa) | |
0b307043 | 1910 | { |
c9082e51 IW |
1911 | const struct ib_mad_hdr *recv_hdr = (const struct ib_mad_hdr *)recv->mad; |
1912 | struct ib_mad_hdr *resp_hdr = (struct ib_mad_hdr *)response->mad; | |
1913 | ||
1914 | if (recv_hdr->method == IB_MGMT_METHOD_GET || | |
1915 | recv_hdr->method == IB_MGMT_METHOD_SET) { | |
1916 | memcpy(response, recv, mad_priv_size(response)); | |
0b307043 | 1917 | response->header.recv_wc.wc = &response->header.wc; |
c9082e51 | 1918 | response->header.recv_wc.recv_buf.mad = (struct ib_mad *)response->mad; |
0b307043 | 1919 | response->header.recv_wc.recv_buf.grh = &response->grh; |
c9082e51 IW |
1920 | resp_hdr->method = IB_MGMT_METHOD_GET_RESP; |
1921 | resp_hdr->status = cpu_to_be16(IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD_ATTRIB); | |
1922 | if (recv_hdr->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) | |
1923 | resp_hdr->status |= IB_SMP_DIRECTION; | |
0b307043 | 1924 | |
8e4349d1 IW |
1925 | if (opa && recv_hdr->base_version == OPA_MGMT_BASE_VERSION) { |
1926 | if (recv_hdr->mgmt_class == | |
1927 | IB_MGMT_CLASS_SUBN_LID_ROUTED || | |
1928 | recv_hdr->mgmt_class == | |
1929 | IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) | |
1930 | *resp_len = opa_get_smp_header_size( | |
1931 | (struct opa_smp *)recv->mad); | |
1932 | else | |
1933 | *resp_len = sizeof(struct ib_mad_hdr); | |
1934 | } | |
1935 | ||
0b307043 ST |
1936 | return true; |
1937 | } else { | |
1938 | return false; | |
1939 | } | |
1940 | } | |
8e4349d1 IW |
1941 | |
1942 | static enum smi_action | |
1943 | handle_opa_smi(struct ib_mad_port_private *port_priv, | |
1944 | struct ib_mad_qp_info *qp_info, | |
1945 | struct ib_wc *wc, | |
1fb7f897 | 1946 | u32 port_num, |
8e4349d1 IW |
1947 | struct ib_mad_private *recv, |
1948 | struct ib_mad_private *response) | |
1949 | { | |
1950 | enum smi_forward_action retsmi; | |
1951 | struct opa_smp *smp = (struct opa_smp *)recv->mad; | |
1952 | ||
2ccfbb70 IW |
1953 | trace_ib_mad_handle_opa_smi(smp); |
1954 | ||
8e4349d1 | 1955 | if (opa_smi_handle_dr_smp_recv(smp, |
4139032b | 1956 | rdma_cap_ib_switch(port_priv->device), |
8e4349d1 IW |
1957 | port_num, |
1958 | port_priv->device->phys_port_cnt) == | |
1959 | IB_SMI_DISCARD) | |
1960 | return IB_SMI_DISCARD; | |
1961 | ||
1962 | retsmi = opa_smi_check_forward_dr_smp(smp); | |
1963 | if (retsmi == IB_SMI_LOCAL) | |
1964 | return IB_SMI_HANDLE; | |
1965 | ||
1966 | if (retsmi == IB_SMI_SEND) { /* don't forward */ | |
1967 | if (opa_smi_handle_dr_smp_send(smp, | |
4139032b | 1968 | rdma_cap_ib_switch(port_priv->device), |
8e4349d1 IW |
1969 | port_num) == IB_SMI_DISCARD) |
1970 | return IB_SMI_DISCARD; | |
1971 | ||
1972 | if (opa_smi_check_local_smp(smp, port_priv->device) == | |
1973 | IB_SMI_DISCARD) | |
1974 | return IB_SMI_DISCARD; | |
1975 | ||
4139032b | 1976 | } else if (rdma_cap_ib_switch(port_priv->device)) { |
8e4349d1 IW |
1977 | /* forward case for switches */ |
1978 | memcpy(response, recv, mad_priv_size(response)); | |
1979 | response->header.recv_wc.wc = &response->header.wc; | |
1980 | response->header.recv_wc.recv_buf.opa_mad = | |
1981 | (struct opa_mad *)response->mad; | |
1982 | response->header.recv_wc.recv_buf.grh = &response->grh; | |
1983 | ||
1984 | agent_send_response((const struct ib_mad_hdr *)response->mad, | |
1985 | &response->grh, wc, | |
1986 | port_priv->device, | |
1987 | opa_smi_get_fwd_port(smp), | |
1988 | qp_info->qp->qp_num, | |
1989 | recv->header.wc.byte_len, | |
1990 | true); | |
1991 | ||
1992 | return IB_SMI_DISCARD; | |
1993 | } | |
1994 | ||
1995 | return IB_SMI_HANDLE; | |
1996 | } | |
1997 | ||
1998 | static enum smi_action | |
1999 | handle_smi(struct ib_mad_port_private *port_priv, | |
2000 | struct ib_mad_qp_info *qp_info, | |
2001 | struct ib_wc *wc, | |
1fb7f897 | 2002 | u32 port_num, |
8e4349d1 IW |
2003 | struct ib_mad_private *recv, |
2004 | struct ib_mad_private *response, | |
2005 | bool opa) | |
2006 | { | |
2007 | struct ib_mad_hdr *mad_hdr = (struct ib_mad_hdr *)recv->mad; | |
2008 | ||
2009 | if (opa && mad_hdr->base_version == OPA_MGMT_BASE_VERSION && | |
9fa240bb | 2010 | mad_hdr->class_version == OPA_SM_CLASS_VERSION) |
8e4349d1 IW |
2011 | return handle_opa_smi(port_priv, qp_info, wc, port_num, recv, |
2012 | response); | |
2013 | ||
2014 | return handle_ib_smi(port_priv, qp_info, wc, port_num, recv, response); | |
2015 | } | |
2016 | ||
d53e11fd | 2017 | static void ib_mad_recv_done(struct ib_cq *cq, struct ib_wc *wc) |
1da177e4 | 2018 | { |
d53e11fd CH |
2019 | struct ib_mad_port_private *port_priv = cq->cq_context; |
2020 | struct ib_mad_list_head *mad_list = | |
2021 | container_of(wc->wr_cqe, struct ib_mad_list_head, cqe); | |
1da177e4 LT |
2022 | struct ib_mad_qp_info *qp_info; |
2023 | struct ib_mad_private_header *mad_priv_hdr; | |
445d6807 | 2024 | struct ib_mad_private *recv, *response = NULL; |
1da177e4 | 2025 | struct ib_mad_agent_private *mad_agent; |
1fb7f897 | 2026 | u32 port_num; |
a9e74323 | 2027 | int ret = IB_MAD_RESULT_SUCCESS; |
4cd7c947 IW |
2028 | size_t mad_size; |
2029 | u16 resp_mad_pkey_index = 0; | |
8e4349d1 | 2030 | bool opa; |
1da177e4 | 2031 | |
d53e11fd CH |
2032 | if (list_empty_careful(&port_priv->port_list)) |
2033 | return; | |
2034 | ||
2035 | if (wc->status != IB_WC_SUCCESS) { | |
2036 | /* | |
2037 | * Receive errors indicate that the QP has entered the error | |
2038 | * state - error handling/shutdown code will cleanup | |
2039 | */ | |
2040 | return; | |
2041 | } | |
2042 | ||
1da177e4 LT |
2043 | qp_info = mad_list->mad_queue->qp_info; |
2044 | dequeue_mad(mad_list); | |
2045 | ||
8e4349d1 IW |
2046 | opa = rdma_cap_opa_mad(qp_info->port_priv->device, |
2047 | qp_info->port_priv->port_num); | |
2048 | ||
1da177e4 LT |
2049 | mad_priv_hdr = container_of(mad_list, struct ib_mad_private_header, |
2050 | mad_list); | |
2051 | recv = container_of(mad_priv_hdr, struct ib_mad_private, header); | |
1527106f RC |
2052 | ib_dma_unmap_single(port_priv->device, |
2053 | recv->header.mapping, | |
c9082e51 | 2054 | mad_priv_dma_size(recv), |
1527106f | 2055 | DMA_FROM_DEVICE); |
1da177e4 LT |
2056 | |
2057 | /* Setup MAD receive work completion from "normal" work completion */ | |
24239aff SH |
2058 | recv->header.wc = *wc; |
2059 | recv->header.recv_wc.wc = &recv->header.wc; | |
8e4349d1 IW |
2060 | |
2061 | if (opa && ((struct ib_mad_hdr *)(recv->mad))->base_version == OPA_MGMT_BASE_VERSION) { | |
2062 | recv->header.recv_wc.mad_len = wc->byte_len - sizeof(struct ib_grh); | |
2063 | recv->header.recv_wc.mad_seg_size = sizeof(struct opa_mad); | |
2064 | } else { | |
2065 | recv->header.recv_wc.mad_len = sizeof(struct ib_mad); | |
2066 | recv->header.recv_wc.mad_seg_size = sizeof(struct ib_mad); | |
2067 | } | |
2068 | ||
c9082e51 | 2069 | recv->header.recv_wc.recv_buf.mad = (struct ib_mad *)recv->mad; |
1da177e4 LT |
2070 | recv->header.recv_wc.recv_buf.grh = &recv->grh; |
2071 | ||
1da177e4 | 2072 | /* Validate MAD */ |
8e4349d1 | 2073 | if (!validate_mad((const struct ib_mad_hdr *)recv->mad, qp_info, opa)) |
1da177e4 LT |
2074 | goto out; |
2075 | ||
821bf1de IW |
2076 | trace_ib_mad_recv_done_handler(qp_info, wc, |
2077 | (struct ib_mad_hdr *)recv->mad); | |
2078 | ||
4cd7c947 IW |
2079 | mad_size = recv->mad_size; |
2080 | response = alloc_mad_private(mad_size, GFP_KERNEL); | |
27162432 | 2081 | if (!response) |
445d6807 | 2082 | goto out; |
445d6807 | 2083 | |
4139032b | 2084 | if (rdma_cap_ib_switch(port_priv->device)) |
1bae4dbf HR |
2085 | port_num = wc->port_num; |
2086 | else | |
2087 | port_num = port_priv->port_num; | |
2088 | ||
c9082e51 | 2089 | if (((struct ib_mad_hdr *)recv->mad)->mgmt_class == |
1da177e4 | 2090 | IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { |
8e4349d1 IW |
2091 | if (handle_smi(port_priv, qp_info, wc, port_num, recv, |
2092 | response, opa) | |
e11ae8aa | 2093 | == IB_SMI_DISCARD) |
1da177e4 | 2094 | goto out; |
1da177e4 LT |
2095 | } |
2096 | ||
1da177e4 | 2097 | /* Give driver "right of first refusal" on incoming MAD */ |
3023a1e9 KH |
2098 | if (port_priv->device->ops.process_mad) { |
2099 | ret = port_priv->device->ops.process_mad( | |
2100 | port_priv->device, 0, port_priv->port_num, wc, | |
e26e7b88 LR |
2101 | &recv->grh, (const struct ib_mad *)recv->mad, |
2102 | (struct ib_mad *)response->mad, &mad_size, | |
2103 | &resp_mad_pkey_index); | |
8e4349d1 IW |
2104 | |
2105 | if (opa) | |
2106 | wc->pkey_index = resp_mad_pkey_index; | |
2107 | ||
1da177e4 LT |
2108 | if (ret & IB_MAD_RESULT_SUCCESS) { |
2109 | if (ret & IB_MAD_RESULT_CONSUMED) | |
2110 | goto out; | |
2111 | if (ret & IB_MAD_RESULT_REPLY) { | |
c9082e51 | 2112 | agent_send_response((const struct ib_mad_hdr *)response->mad, |
34816ad9 SH |
2113 | &recv->grh, wc, |
2114 | port_priv->device, | |
1bae4dbf | 2115 | port_num, |
c9082e51 | 2116 | qp_info->qp->qp_num, |
8e4349d1 | 2117 | mad_size, opa); |
1da177e4 LT |
2118 | goto out; |
2119 | } | |
2120 | } | |
2121 | } | |
2122 | ||
c9082e51 | 2123 | mad_agent = find_mad_agent(port_priv, (const struct ib_mad_hdr *)recv->mad); |
1da177e4 | 2124 | if (mad_agent) { |
0e65bae2 | 2125 | trace_ib_mad_recv_done_agent(mad_agent); |
4a0754fa | 2126 | ib_mad_complete_recv(mad_agent, &recv->header.recv_wc); |
1da177e4 LT |
2127 | /* |
2128 | * recv is freed up in error cases in ib_mad_complete_recv | |
2129 | * or via recv_handler in ib_mad_complete_recv() | |
2130 | */ | |
2131 | recv = NULL; | |
a9e74323 | 2132 | } else if ((ret & IB_MAD_RESULT_SUCCESS) && |
8e4349d1 | 2133 | generate_unmatched_resp(recv, response, &mad_size, opa)) { |
c9082e51 IW |
2134 | agent_send_response((const struct ib_mad_hdr *)response->mad, &recv->grh, wc, |
2135 | port_priv->device, port_num, | |
8e4349d1 | 2136 | qp_info->qp->qp_num, mad_size, opa); |
1da177e4 LT |
2137 | } |
2138 | ||
2139 | out: | |
2140 | /* Post another receive request for this QP */ | |
2141 | if (response) { | |
2142 | ib_mad_post_receive_mads(qp_info, response); | |
c9082e51 | 2143 | kfree(recv); |
1da177e4 LT |
2144 | } else |
2145 | ib_mad_post_receive_mads(qp_info, recv); | |
2146 | } | |
2147 | ||
2148 | static void adjust_timeout(struct ib_mad_agent_private *mad_agent_priv) | |
2149 | { | |
2150 | struct ib_mad_send_wr_private *mad_send_wr; | |
2151 | unsigned long delay; | |
2152 | ||
2153 | if (list_empty(&mad_agent_priv->wait_list)) { | |
136b5721 | 2154 | cancel_delayed_work(&mad_agent_priv->timed_work); |
1da177e4 LT |
2155 | } else { |
2156 | mad_send_wr = list_entry(mad_agent_priv->wait_list.next, | |
2157 | struct ib_mad_send_wr_private, | |
2158 | agent_list); | |
2159 | ||
2160 | if (time_after(mad_agent_priv->timeout, | |
2161 | mad_send_wr->timeout)) { | |
2162 | mad_agent_priv->timeout = mad_send_wr->timeout; | |
1da177e4 LT |
2163 | delay = mad_send_wr->timeout - jiffies; |
2164 | if ((long)delay <= 0) | |
2165 | delay = 1; | |
e7c2f967 TH |
2166 | mod_delayed_work(mad_agent_priv->qp_info->port_priv->wq, |
2167 | &mad_agent_priv->timed_work, delay); | |
1da177e4 LT |
2168 | } |
2169 | } | |
2170 | } | |
2171 | ||
d760ce8f | 2172 | static void wait_for_response(struct ib_mad_send_wr_private *mad_send_wr) |
1da177e4 | 2173 | { |
d760ce8f | 2174 | struct ib_mad_agent_private *mad_agent_priv; |
1da177e4 LT |
2175 | struct ib_mad_send_wr_private *temp_mad_send_wr; |
2176 | struct list_head *list_item; | |
2177 | unsigned long delay; | |
2178 | ||
d760ce8f | 2179 | mad_agent_priv = mad_send_wr->mad_agent_priv; |
1da177e4 LT |
2180 | list_del(&mad_send_wr->agent_list); |
2181 | ||
2182 | delay = mad_send_wr->timeout; | |
2183 | mad_send_wr->timeout += jiffies; | |
2184 | ||
29bb33dd HR |
2185 | if (delay) { |
2186 | list_for_each_prev(list_item, &mad_agent_priv->wait_list) { | |
2187 | temp_mad_send_wr = list_entry(list_item, | |
2188 | struct ib_mad_send_wr_private, | |
2189 | agent_list); | |
2190 | if (time_after(mad_send_wr->timeout, | |
2191 | temp_mad_send_wr->timeout)) | |
2192 | break; | |
2193 | } | |
b6eb7011 | 2194 | } else { |
29bb33dd | 2195 | list_item = &mad_agent_priv->wait_list; |
b6eb7011 WL |
2196 | } |
2197 | ||
1da177e4 LT |
2198 | list_add(&mad_send_wr->agent_list, list_item); |
2199 | ||
2200 | /* Reschedule a work item if we have a shorter timeout */ | |
e7c2f967 TH |
2201 | if (mad_agent_priv->wait_list.next == &mad_send_wr->agent_list) |
2202 | mod_delayed_work(mad_agent_priv->qp_info->port_priv->wq, | |
2203 | &mad_agent_priv->timed_work, delay); | |
1da177e4 LT |
2204 | } |
2205 | ||
03b61ad2 | 2206 | void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr, |
dbace111 | 2207 | unsigned long timeout_ms) |
03b61ad2 HR |
2208 | { |
2209 | mad_send_wr->timeout = msecs_to_jiffies(timeout_ms); | |
2210 | wait_for_response(mad_send_wr); | |
2211 | } | |
2212 | ||
1da177e4 LT |
2213 | /* |
2214 | * Process a send work completion | |
2215 | */ | |
fa619a77 HR |
2216 | void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr, |
2217 | struct ib_mad_send_wc *mad_send_wc) | |
1da177e4 LT |
2218 | { |
2219 | struct ib_mad_agent_private *mad_agent_priv; | |
2220 | unsigned long flags; | |
fa619a77 | 2221 | int ret; |
1da177e4 | 2222 | |
d760ce8f | 2223 | mad_agent_priv = mad_send_wr->mad_agent_priv; |
1da177e4 | 2224 | spin_lock_irqsave(&mad_agent_priv->lock, flags); |
1471cb6c | 2225 | if (ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent)) { |
fa619a77 HR |
2226 | ret = ib_process_rmpp_send_wc(mad_send_wr, mad_send_wc); |
2227 | if (ret == IB_RMPP_RESULT_CONSUMED) | |
2228 | goto done; | |
2229 | } else | |
2230 | ret = IB_RMPP_RESULT_UNHANDLED; | |
2231 | ||
1da177e4 LT |
2232 | if (mad_send_wc->status != IB_WC_SUCCESS && |
2233 | mad_send_wr->status == IB_WC_SUCCESS) { | |
2234 | mad_send_wr->status = mad_send_wc->status; | |
2235 | mad_send_wr->refcount -= (mad_send_wr->timeout > 0); | |
2236 | } | |
2237 | ||
2238 | if (--mad_send_wr->refcount > 0) { | |
2239 | if (mad_send_wr->refcount == 1 && mad_send_wr->timeout && | |
2240 | mad_send_wr->status == IB_WC_SUCCESS) { | |
d760ce8f | 2241 | wait_for_response(mad_send_wr); |
1da177e4 | 2242 | } |
fa619a77 | 2243 | goto done; |
1da177e4 LT |
2244 | } |
2245 | ||
2246 | /* Remove send from MAD agent and notify client of completion */ | |
2247 | list_del(&mad_send_wr->agent_list); | |
2248 | adjust_timeout(mad_agent_priv); | |
2249 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); | |
2250 | ||
f681967a | 2251 | if (mad_send_wr->status != IB_WC_SUCCESS) |
1da177e4 | 2252 | mad_send_wc->status = mad_send_wr->status; |
34816ad9 SH |
2253 | if (ret == IB_RMPP_RESULT_INTERNAL) |
2254 | ib_rmpp_send_handler(mad_send_wc); | |
2255 | else | |
fa619a77 HR |
2256 | mad_agent_priv->agent.send_handler(&mad_agent_priv->agent, |
2257 | mad_send_wc); | |
1da177e4 LT |
2258 | |
2259 | /* Release reference on agent taken when sending */ | |
1b52fa98 | 2260 | deref_mad_agent(mad_agent_priv); |
fa619a77 HR |
2261 | return; |
2262 | done: | |
2263 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); | |
1da177e4 LT |
2264 | } |
2265 | ||
d53e11fd | 2266 | static void ib_mad_send_done(struct ib_cq *cq, struct ib_wc *wc) |
1da177e4 | 2267 | { |
d53e11fd CH |
2268 | struct ib_mad_port_private *port_priv = cq->cq_context; |
2269 | struct ib_mad_list_head *mad_list = | |
2270 | container_of(wc->wr_cqe, struct ib_mad_list_head, cqe); | |
1da177e4 | 2271 | struct ib_mad_send_wr_private *mad_send_wr, *queued_send_wr; |
1da177e4 LT |
2272 | struct ib_mad_qp_info *qp_info; |
2273 | struct ib_mad_queue *send_queue; | |
34816ad9 | 2274 | struct ib_mad_send_wc mad_send_wc; |
1da177e4 LT |
2275 | unsigned long flags; |
2276 | int ret; | |
2277 | ||
d53e11fd CH |
2278 | if (list_empty_careful(&port_priv->port_list)) |
2279 | return; | |
2280 | ||
2281 | if (wc->status != IB_WC_SUCCESS) { | |
2282 | if (!ib_mad_send_error(port_priv, wc)) | |
2283 | return; | |
2284 | } | |
2285 | ||
1da177e4 LT |
2286 | mad_send_wr = container_of(mad_list, struct ib_mad_send_wr_private, |
2287 | mad_list); | |
2288 | send_queue = mad_list->mad_queue; | |
2289 | qp_info = send_queue->qp_info; | |
2290 | ||
0e65bae2 | 2291 | trace_ib_mad_send_done_agent(mad_send_wr->mad_agent_priv); |
4d60cad5 IW |
2292 | trace_ib_mad_send_done_handler(mad_send_wr, wc); |
2293 | ||
1da177e4 | 2294 | retry: |
1527106f RC |
2295 | ib_dma_unmap_single(mad_send_wr->send_buf.mad_agent->device, |
2296 | mad_send_wr->header_mapping, | |
2297 | mad_send_wr->sg_list[0].length, DMA_TO_DEVICE); | |
2298 | ib_dma_unmap_single(mad_send_wr->send_buf.mad_agent->device, | |
2299 | mad_send_wr->payload_mapping, | |
2300 | mad_send_wr->sg_list[1].length, DMA_TO_DEVICE); | |
1da177e4 LT |
2301 | queued_send_wr = NULL; |
2302 | spin_lock_irqsave(&send_queue->lock, flags); | |
2303 | list_del(&mad_list->list); | |
2304 | ||
2305 | /* Move queued send to the send queue */ | |
2306 | if (send_queue->count-- > send_queue->max_active) { | |
2307 | mad_list = container_of(qp_info->overflow_list.next, | |
2308 | struct ib_mad_list_head, list); | |
2309 | queued_send_wr = container_of(mad_list, | |
2310 | struct ib_mad_send_wr_private, | |
2311 | mad_list); | |
179e0917 | 2312 | list_move_tail(&mad_list->list, &send_queue->list); |
1da177e4 LT |
2313 | } |
2314 | spin_unlock_irqrestore(&send_queue->lock, flags); | |
2315 | ||
34816ad9 SH |
2316 | mad_send_wc.send_buf = &mad_send_wr->send_buf; |
2317 | mad_send_wc.status = wc->status; | |
2318 | mad_send_wc.vendor_err = wc->vendor_err; | |
34816ad9 | 2319 | ib_mad_complete_send_wr(mad_send_wr, &mad_send_wc); |
1da177e4 LT |
2320 | |
2321 | if (queued_send_wr) { | |
4d60cad5 | 2322 | trace_ib_mad_send_done_resend(queued_send_wr, qp_info); |
e622f2f4 | 2323 | ret = ib_post_send(qp_info->qp, &queued_send_wr->send_wr.wr, |
1fec77bf | 2324 | NULL); |
1da177e4 | 2325 | if (ret) { |
7ef5d4b0 IW |
2326 | dev_err(&port_priv->device->dev, |
2327 | "ib_post_send failed: %d\n", ret); | |
1da177e4 LT |
2328 | mad_send_wr = queued_send_wr; |
2329 | wc->status = IB_WC_LOC_QP_OP_ERR; | |
2330 | goto retry; | |
2331 | } | |
2332 | } | |
2333 | } | |
2334 | ||
2335 | static void mark_sends_for_retry(struct ib_mad_qp_info *qp_info) | |
2336 | { | |
2337 | struct ib_mad_send_wr_private *mad_send_wr; | |
2338 | struct ib_mad_list_head *mad_list; | |
2339 | unsigned long flags; | |
2340 | ||
2341 | spin_lock_irqsave(&qp_info->send_queue.lock, flags); | |
2342 | list_for_each_entry(mad_list, &qp_info->send_queue.list, list) { | |
2343 | mad_send_wr = container_of(mad_list, | |
2344 | struct ib_mad_send_wr_private, | |
2345 | mad_list); | |
2346 | mad_send_wr->retry = 1; | |
2347 | } | |
2348 | spin_unlock_irqrestore(&qp_info->send_queue.lock, flags); | |
2349 | } | |
2350 | ||
d53e11fd CH |
2351 | static bool ib_mad_send_error(struct ib_mad_port_private *port_priv, |
2352 | struct ib_wc *wc) | |
1da177e4 | 2353 | { |
d53e11fd CH |
2354 | struct ib_mad_list_head *mad_list = |
2355 | container_of(wc->wr_cqe, struct ib_mad_list_head, cqe); | |
2356 | struct ib_mad_qp_info *qp_info = mad_list->mad_queue->qp_info; | |
1da177e4 LT |
2357 | struct ib_mad_send_wr_private *mad_send_wr; |
2358 | int ret; | |
2359 | ||
1da177e4 LT |
2360 | /* |
2361 | * Send errors will transition the QP to SQE - move | |
2362 | * QP to RTS and repost flushed work requests | |
2363 | */ | |
2364 | mad_send_wr = container_of(mad_list, struct ib_mad_send_wr_private, | |
2365 | mad_list); | |
2366 | if (wc->status == IB_WC_WR_FLUSH_ERR) { | |
2367 | if (mad_send_wr->retry) { | |
2368 | /* Repost send */ | |
1da177e4 | 2369 | mad_send_wr->retry = 0; |
4d60cad5 | 2370 | trace_ib_mad_error_handler(mad_send_wr, qp_info); |
e622f2f4 | 2371 | ret = ib_post_send(qp_info->qp, &mad_send_wr->send_wr.wr, |
1fec77bf | 2372 | NULL); |
d53e11fd CH |
2373 | if (!ret) |
2374 | return false; | |
2375 | } | |
1da177e4 LT |
2376 | } else { |
2377 | struct ib_qp_attr *attr; | |
2378 | ||
2379 | /* Transition QP to RTS and fail offending send */ | |
2380 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
2381 | if (attr) { | |
2382 | attr->qp_state = IB_QPS_RTS; | |
2383 | attr->cur_qp_state = IB_QPS_SQE; | |
2384 | ret = ib_modify_qp(qp_info->qp, attr, | |
2385 | IB_QP_STATE | IB_QP_CUR_STATE); | |
2386 | kfree(attr); | |
2387 | if (ret) | |
7ef5d4b0 | 2388 | dev_err(&port_priv->device->dev, |
d53e11fd CH |
2389 | "%s - ib_modify_qp to RTS: %d\n", |
2390 | __func__, ret); | |
1da177e4 LT |
2391 | else |
2392 | mark_sends_for_retry(qp_info); | |
2393 | } | |
1da177e4 | 2394 | } |
1da177e4 | 2395 | |
d53e11fd | 2396 | return true; |
1da177e4 LT |
2397 | } |
2398 | ||
2399 | static void cancel_mads(struct ib_mad_agent_private *mad_agent_priv) | |
2400 | { | |
2401 | unsigned long flags; | |
2402 | struct ib_mad_send_wr_private *mad_send_wr, *temp_mad_send_wr; | |
2403 | struct ib_mad_send_wc mad_send_wc; | |
2404 | struct list_head cancel_list; | |
2405 | ||
2406 | INIT_LIST_HEAD(&cancel_list); | |
2407 | ||
2408 | spin_lock_irqsave(&mad_agent_priv->lock, flags); | |
2409 | list_for_each_entry_safe(mad_send_wr, temp_mad_send_wr, | |
2410 | &mad_agent_priv->send_list, agent_list) { | |
2411 | if (mad_send_wr->status == IB_WC_SUCCESS) { | |
3cd96564 | 2412 | mad_send_wr->status = IB_WC_WR_FLUSH_ERR; |
1da177e4 LT |
2413 | mad_send_wr->refcount -= (mad_send_wr->timeout > 0); |
2414 | } | |
2415 | } | |
2416 | ||
2417 | /* Empty wait list to prevent receives from finding a request */ | |
2418 | list_splice_init(&mad_agent_priv->wait_list, &cancel_list); | |
2419 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); | |
2420 | ||
2421 | /* Report all cancelled requests */ | |
2422 | mad_send_wc.status = IB_WC_WR_FLUSH_ERR; | |
2423 | mad_send_wc.vendor_err = 0; | |
2424 | ||
2425 | list_for_each_entry_safe(mad_send_wr, temp_mad_send_wr, | |
2426 | &cancel_list, agent_list) { | |
34816ad9 SH |
2427 | mad_send_wc.send_buf = &mad_send_wr->send_buf; |
2428 | list_del(&mad_send_wr->agent_list); | |
1da177e4 LT |
2429 | mad_agent_priv->agent.send_handler(&mad_agent_priv->agent, |
2430 | &mad_send_wc); | |
b9af0e2d | 2431 | deref_mad_agent(mad_agent_priv); |
1da177e4 LT |
2432 | } |
2433 | } | |
2434 | ||
2435 | static struct ib_mad_send_wr_private* | |
34816ad9 SH |
2436 | find_send_wr(struct ib_mad_agent_private *mad_agent_priv, |
2437 | struct ib_mad_send_buf *send_buf) | |
1da177e4 LT |
2438 | { |
2439 | struct ib_mad_send_wr_private *mad_send_wr; | |
2440 | ||
2441 | list_for_each_entry(mad_send_wr, &mad_agent_priv->wait_list, | |
2442 | agent_list) { | |
34816ad9 | 2443 | if (&mad_send_wr->send_buf == send_buf) |
1da177e4 LT |
2444 | return mad_send_wr; |
2445 | } | |
2446 | ||
2447 | list_for_each_entry(mad_send_wr, &mad_agent_priv->send_list, | |
2448 | agent_list) { | |
c597eee5 IW |
2449 | if (is_rmpp_data_mad(mad_agent_priv, |
2450 | mad_send_wr->send_buf.mad) && | |
34816ad9 | 2451 | &mad_send_wr->send_buf == send_buf) |
1da177e4 LT |
2452 | return mad_send_wr; |
2453 | } | |
2454 | return NULL; | |
2455 | } | |
2456 | ||
70076a41 | 2457 | int ib_modify_mad(struct ib_mad_send_buf *send_buf, u32 timeout_ms) |
1da177e4 LT |
2458 | { |
2459 | struct ib_mad_agent_private *mad_agent_priv; | |
2460 | struct ib_mad_send_wr_private *mad_send_wr; | |
2461 | unsigned long flags; | |
cabe3cbc | 2462 | int active; |
1da177e4 | 2463 | |
70076a41 MZ |
2464 | if (!send_buf) |
2465 | return -EINVAL; | |
2466 | ||
2467 | mad_agent_priv = container_of(send_buf->mad_agent, | |
2468 | struct ib_mad_agent_private, agent); | |
1da177e4 | 2469 | spin_lock_irqsave(&mad_agent_priv->lock, flags); |
34816ad9 | 2470 | mad_send_wr = find_send_wr(mad_agent_priv, send_buf); |
03b61ad2 | 2471 | if (!mad_send_wr || mad_send_wr->status != IB_WC_SUCCESS) { |
1da177e4 | 2472 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); |
03b61ad2 | 2473 | return -EINVAL; |
1da177e4 LT |
2474 | } |
2475 | ||
cabe3cbc | 2476 | active = (!mad_send_wr->timeout || mad_send_wr->refcount > 1); |
03b61ad2 | 2477 | if (!timeout_ms) { |
1da177e4 | 2478 | mad_send_wr->status = IB_WC_WR_FLUSH_ERR; |
03b61ad2 | 2479 | mad_send_wr->refcount -= (mad_send_wr->timeout > 0); |
1da177e4 LT |
2480 | } |
2481 | ||
34816ad9 | 2482 | mad_send_wr->send_buf.timeout_ms = timeout_ms; |
cabe3cbc | 2483 | if (active) |
03b61ad2 HR |
2484 | mad_send_wr->timeout = msecs_to_jiffies(timeout_ms); |
2485 | else | |
2486 | ib_reset_mad_timeout(mad_send_wr, timeout_ms); | |
2487 | ||
1da177e4 | 2488 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); |
03b61ad2 HR |
2489 | return 0; |
2490 | } | |
2491 | EXPORT_SYMBOL(ib_modify_mad); | |
1da177e4 | 2492 | |
c4028958 | 2493 | static void local_completions(struct work_struct *work) |
1da177e4 LT |
2494 | { |
2495 | struct ib_mad_agent_private *mad_agent_priv; | |
2496 | struct ib_mad_local_private *local; | |
2497 | struct ib_mad_agent_private *recv_mad_agent; | |
2498 | unsigned long flags; | |
1d9bc6d6 | 2499 | int free_mad; |
1da177e4 LT |
2500 | struct ib_wc wc; |
2501 | struct ib_mad_send_wc mad_send_wc; | |
8e4349d1 | 2502 | bool opa; |
1da177e4 | 2503 | |
c4028958 DH |
2504 | mad_agent_priv = |
2505 | container_of(work, struct ib_mad_agent_private, local_work); | |
1da177e4 | 2506 | |
8e4349d1 IW |
2507 | opa = rdma_cap_opa_mad(mad_agent_priv->qp_info->port_priv->device, |
2508 | mad_agent_priv->qp_info->port_priv->port_num); | |
2509 | ||
1da177e4 LT |
2510 | spin_lock_irqsave(&mad_agent_priv->lock, flags); |
2511 | while (!list_empty(&mad_agent_priv->local_list)) { | |
2512 | local = list_entry(mad_agent_priv->local_list.next, | |
2513 | struct ib_mad_local_private, | |
2514 | completion_list); | |
37289efe | 2515 | list_del(&local->completion_list); |
1da177e4 | 2516 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); |
1d9bc6d6 | 2517 | free_mad = 0; |
1da177e4 | 2518 | if (local->mad_priv) { |
8e4349d1 | 2519 | u8 base_version; |
1da177e4 LT |
2520 | recv_mad_agent = local->recv_mad_agent; |
2521 | if (!recv_mad_agent) { | |
7ef5d4b0 IW |
2522 | dev_err(&mad_agent_priv->agent.device->dev, |
2523 | "No receive MAD agent for local completion\n"); | |
1d9bc6d6 | 2524 | free_mad = 1; |
1da177e4 LT |
2525 | goto local_send_completion; |
2526 | } | |
2527 | ||
2528 | /* | |
2529 | * Defined behavior is to complete response | |
2530 | * before request | |
2531 | */ | |
062dbb69 | 2532 | build_smp_wc(recv_mad_agent->agent.qp, |
d53e11fd | 2533 | local->mad_send_wr->send_wr.wr.wr_cqe, |
97f52eb4 | 2534 | be16_to_cpu(IB_LID_PERMISSIVE), |
e622f2f4 | 2535 | local->mad_send_wr->send_wr.pkey_index, |
8e4349d1 | 2536 | recv_mad_agent->agent.port_num, &wc); |
1da177e4 LT |
2537 | |
2538 | local->mad_priv->header.recv_wc.wc = &wc; | |
8e4349d1 IW |
2539 | |
2540 | base_version = ((struct ib_mad_hdr *)(local->mad_priv->mad))->base_version; | |
2541 | if (opa && base_version == OPA_MGMT_BASE_VERSION) { | |
2542 | local->mad_priv->header.recv_wc.mad_len = local->return_wc_byte_len; | |
2543 | local->mad_priv->header.recv_wc.mad_seg_size = sizeof(struct opa_mad); | |
2544 | } else { | |
2545 | local->mad_priv->header.recv_wc.mad_len = sizeof(struct ib_mad); | |
2546 | local->mad_priv->header.recv_wc.mad_seg_size = sizeof(struct ib_mad); | |
2547 | } | |
2548 | ||
fa619a77 HR |
2549 | INIT_LIST_HEAD(&local->mad_priv->header.recv_wc.rmpp_list); |
2550 | list_add(&local->mad_priv->header.recv_wc.recv_buf.list, | |
2551 | &local->mad_priv->header.recv_wc.rmpp_list); | |
1da177e4 LT |
2552 | local->mad_priv->header.recv_wc.recv_buf.grh = NULL; |
2553 | local->mad_priv->header.recv_wc.recv_buf.mad = | |
c9082e51 | 2554 | (struct ib_mad *)local->mad_priv->mad; |
1da177e4 LT |
2555 | recv_mad_agent->agent.recv_handler( |
2556 | &recv_mad_agent->agent, | |
ca281265 | 2557 | &local->mad_send_wr->send_buf, |
1da177e4 LT |
2558 | &local->mad_priv->header.recv_wc); |
2559 | spin_lock_irqsave(&recv_mad_agent->lock, flags); | |
b9af0e2d | 2560 | deref_mad_agent(recv_mad_agent); |
1da177e4 LT |
2561 | spin_unlock_irqrestore(&recv_mad_agent->lock, flags); |
2562 | } | |
2563 | ||
2564 | local_send_completion: | |
2565 | /* Complete send */ | |
2566 | mad_send_wc.status = IB_WC_SUCCESS; | |
2567 | mad_send_wc.vendor_err = 0; | |
34816ad9 | 2568 | mad_send_wc.send_buf = &local->mad_send_wr->send_buf; |
1da177e4 LT |
2569 | mad_agent_priv->agent.send_handler(&mad_agent_priv->agent, |
2570 | &mad_send_wc); | |
2571 | ||
2572 | spin_lock_irqsave(&mad_agent_priv->lock, flags); | |
b9af0e2d | 2573 | deref_mad_agent(mad_agent_priv); |
1d9bc6d6 | 2574 | if (free_mad) |
c9082e51 | 2575 | kfree(local->mad_priv); |
1da177e4 LT |
2576 | kfree(local); |
2577 | } | |
2578 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); | |
2579 | } | |
2580 | ||
f75b7a52 HR |
2581 | static int retry_send(struct ib_mad_send_wr_private *mad_send_wr) |
2582 | { | |
2583 | int ret; | |
2584 | ||
4fc8cd49 | 2585 | if (!mad_send_wr->retries_left) |
f75b7a52 HR |
2586 | return -ETIMEDOUT; |
2587 | ||
4fc8cd49 SH |
2588 | mad_send_wr->retries_left--; |
2589 | mad_send_wr->send_buf.retries++; | |
2590 | ||
34816ad9 | 2591 | mad_send_wr->timeout = msecs_to_jiffies(mad_send_wr->send_buf.timeout_ms); |
f75b7a52 | 2592 | |
1471cb6c | 2593 | if (ib_mad_kernel_rmpp_agent(&mad_send_wr->mad_agent_priv->agent)) { |
fa619a77 HR |
2594 | ret = ib_retry_rmpp(mad_send_wr); |
2595 | switch (ret) { | |
2596 | case IB_RMPP_RESULT_UNHANDLED: | |
2597 | ret = ib_send_mad(mad_send_wr); | |
2598 | break; | |
2599 | case IB_RMPP_RESULT_CONSUMED: | |
2600 | ret = 0; | |
2601 | break; | |
2602 | default: | |
2603 | ret = -ECOMM; | |
2604 | break; | |
2605 | } | |
2606 | } else | |
2607 | ret = ib_send_mad(mad_send_wr); | |
f75b7a52 HR |
2608 | |
2609 | if (!ret) { | |
2610 | mad_send_wr->refcount++; | |
f75b7a52 HR |
2611 | list_add_tail(&mad_send_wr->agent_list, |
2612 | &mad_send_wr->mad_agent_priv->send_list); | |
2613 | } | |
2614 | return ret; | |
2615 | } | |
2616 | ||
c4028958 | 2617 | static void timeout_sends(struct work_struct *work) |
1da177e4 LT |
2618 | { |
2619 | struct ib_mad_agent_private *mad_agent_priv; | |
2620 | struct ib_mad_send_wr_private *mad_send_wr; | |
2621 | struct ib_mad_send_wc mad_send_wc; | |
2622 | unsigned long flags, delay; | |
2623 | ||
c4028958 DH |
2624 | mad_agent_priv = container_of(work, struct ib_mad_agent_private, |
2625 | timed_work.work); | |
1da177e4 LT |
2626 | mad_send_wc.vendor_err = 0; |
2627 | ||
2628 | spin_lock_irqsave(&mad_agent_priv->lock, flags); | |
2629 | while (!list_empty(&mad_agent_priv->wait_list)) { | |
2630 | mad_send_wr = list_entry(mad_agent_priv->wait_list.next, | |
2631 | struct ib_mad_send_wr_private, | |
2632 | agent_list); | |
2633 | ||
2634 | if (time_after(mad_send_wr->timeout, jiffies)) { | |
2635 | delay = mad_send_wr->timeout - jiffies; | |
2636 | if ((long)delay <= 0) | |
2637 | delay = 1; | |
2638 | queue_delayed_work(mad_agent_priv->qp_info-> | |
2639 | port_priv->wq, | |
2640 | &mad_agent_priv->timed_work, delay); | |
2641 | break; | |
2642 | } | |
2643 | ||
dbf9227b | 2644 | list_del(&mad_send_wr->agent_list); |
29bb33dd HR |
2645 | if (mad_send_wr->status == IB_WC_SUCCESS && |
2646 | !retry_send(mad_send_wr)) | |
f75b7a52 HR |
2647 | continue; |
2648 | ||
1da177e4 LT |
2649 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); |
2650 | ||
03b61ad2 HR |
2651 | if (mad_send_wr->status == IB_WC_SUCCESS) |
2652 | mad_send_wc.status = IB_WC_RESP_TIMEOUT_ERR; | |
2653 | else | |
2654 | mad_send_wc.status = mad_send_wr->status; | |
34816ad9 | 2655 | mad_send_wc.send_buf = &mad_send_wr->send_buf; |
1da177e4 LT |
2656 | mad_agent_priv->agent.send_handler(&mad_agent_priv->agent, |
2657 | &mad_send_wc); | |
2658 | ||
b9af0e2d | 2659 | deref_mad_agent(mad_agent_priv); |
1da177e4 LT |
2660 | spin_lock_irqsave(&mad_agent_priv->lock, flags); |
2661 | } | |
2662 | spin_unlock_irqrestore(&mad_agent_priv->lock, flags); | |
2663 | } | |
2664 | ||
1da177e4 LT |
2665 | /* |
2666 | * Allocate receive MADs and post receive WRs for them | |
2667 | */ | |
2668 | static int ib_mad_post_receive_mads(struct ib_mad_qp_info *qp_info, | |
2669 | struct ib_mad_private *mad) | |
2670 | { | |
2671 | unsigned long flags; | |
2672 | int post, ret; | |
2673 | struct ib_mad_private *mad_priv; | |
2674 | struct ib_sge sg_list; | |
1fec77bf | 2675 | struct ib_recv_wr recv_wr; |
1da177e4 LT |
2676 | struct ib_mad_queue *recv_queue = &qp_info->recv_queue; |
2677 | ||
2678 | /* Initialize common scatter list fields */ | |
4be90bc6 | 2679 | sg_list.lkey = qp_info->port_priv->pd->local_dma_lkey; |
1da177e4 LT |
2680 | |
2681 | /* Initialize common receive WR fields */ | |
2682 | recv_wr.next = NULL; | |
2683 | recv_wr.sg_list = &sg_list; | |
2684 | recv_wr.num_sge = 1; | |
2685 | ||
2686 | do { | |
2687 | /* Allocate and map receive buffer */ | |
2688 | if (mad) { | |
2689 | mad_priv = mad; | |
2690 | mad = NULL; | |
2691 | } else { | |
c9082e51 IW |
2692 | mad_priv = alloc_mad_private(port_mad_size(qp_info->port_priv), |
2693 | GFP_ATOMIC); | |
1da177e4 | 2694 | if (!mad_priv) { |
1da177e4 LT |
2695 | ret = -ENOMEM; |
2696 | break; | |
2697 | } | |
2698 | } | |
c9082e51 | 2699 | sg_list.length = mad_priv_dma_size(mad_priv); |
1527106f RC |
2700 | sg_list.addr = ib_dma_map_single(qp_info->port_priv->device, |
2701 | &mad_priv->grh, | |
c9082e51 | 2702 | mad_priv_dma_size(mad_priv), |
1527106f | 2703 | DMA_FROM_DEVICE); |
2c34e68f YB |
2704 | if (unlikely(ib_dma_mapping_error(qp_info->port_priv->device, |
2705 | sg_list.addr))) { | |
a17f4bed | 2706 | kfree(mad_priv); |
2c34e68f YB |
2707 | ret = -ENOMEM; |
2708 | break; | |
2709 | } | |
1527106f | 2710 | mad_priv->header.mapping = sg_list.addr; |
1da177e4 | 2711 | mad_priv->header.mad_list.mad_queue = recv_queue; |
d53e11fd CH |
2712 | mad_priv->header.mad_list.cqe.done = ib_mad_recv_done; |
2713 | recv_wr.wr_cqe = &mad_priv->header.mad_list.cqe; | |
1da177e4 LT |
2714 | |
2715 | /* Post receive WR */ | |
2716 | spin_lock_irqsave(&recv_queue->lock, flags); | |
2717 | post = (++recv_queue->count < recv_queue->max_active); | |
2718 | list_add_tail(&mad_priv->header.mad_list.list, &recv_queue->list); | |
2719 | spin_unlock_irqrestore(&recv_queue->lock, flags); | |
1fec77bf | 2720 | ret = ib_post_recv(qp_info->qp, &recv_wr, NULL); |
1da177e4 LT |
2721 | if (ret) { |
2722 | spin_lock_irqsave(&recv_queue->lock, flags); | |
2723 | list_del(&mad_priv->header.mad_list.list); | |
2724 | recv_queue->count--; | |
2725 | spin_unlock_irqrestore(&recv_queue->lock, flags); | |
1527106f RC |
2726 | ib_dma_unmap_single(qp_info->port_priv->device, |
2727 | mad_priv->header.mapping, | |
c9082e51 | 2728 | mad_priv_dma_size(mad_priv), |
1527106f | 2729 | DMA_FROM_DEVICE); |
c9082e51 | 2730 | kfree(mad_priv); |
7ef5d4b0 IW |
2731 | dev_err(&qp_info->port_priv->device->dev, |
2732 | "ib_post_recv failed: %d\n", ret); | |
1da177e4 LT |
2733 | break; |
2734 | } | |
2735 | } while (post); | |
2736 | ||
2737 | return ret; | |
2738 | } | |
2739 | ||
2740 | /* | |
2741 | * Return all the posted receive MADs | |
2742 | */ | |
2743 | static void cleanup_recv_queue(struct ib_mad_qp_info *qp_info) | |
2744 | { | |
2745 | struct ib_mad_private_header *mad_priv_hdr; | |
2746 | struct ib_mad_private *recv; | |
2747 | struct ib_mad_list_head *mad_list; | |
2748 | ||
fac70d51 EC |
2749 | if (!qp_info->qp) |
2750 | return; | |
2751 | ||
1da177e4 LT |
2752 | while (!list_empty(&qp_info->recv_queue.list)) { |
2753 | ||
2754 | mad_list = list_entry(qp_info->recv_queue.list.next, | |
2755 | struct ib_mad_list_head, list); | |
2756 | mad_priv_hdr = container_of(mad_list, | |
2757 | struct ib_mad_private_header, | |
2758 | mad_list); | |
2759 | recv = container_of(mad_priv_hdr, struct ib_mad_private, | |
2760 | header); | |
2761 | ||
2762 | /* Remove from posted receive MAD list */ | |
2763 | list_del(&mad_list->list); | |
2764 | ||
1527106f RC |
2765 | ib_dma_unmap_single(qp_info->port_priv->device, |
2766 | recv->header.mapping, | |
c9082e51 | 2767 | mad_priv_dma_size(recv), |
1527106f | 2768 | DMA_FROM_DEVICE); |
c9082e51 | 2769 | kfree(recv); |
1da177e4 LT |
2770 | } |
2771 | ||
2772 | qp_info->recv_queue.count = 0; | |
2773 | } | |
2774 | ||
2775 | /* | |
2776 | * Start the port | |
2777 | */ | |
2778 | static int ib_mad_port_start(struct ib_mad_port_private *port_priv) | |
2779 | { | |
2780 | int ret, i; | |
2781 | struct ib_qp_attr *attr; | |
2782 | struct ib_qp *qp; | |
ef5ed416 | 2783 | u16 pkey_index; |
1da177e4 LT |
2784 | |
2785 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
27162432 | 2786 | if (!attr) |
1da177e4 | 2787 | return -ENOMEM; |
1da177e4 | 2788 | |
ef5ed416 JM |
2789 | ret = ib_find_pkey(port_priv->device, port_priv->port_num, |
2790 | IB_DEFAULT_PKEY_FULL, &pkey_index); | |
2791 | if (ret) | |
2792 | pkey_index = 0; | |
2793 | ||
1da177e4 LT |
2794 | for (i = 0; i < IB_MAD_QPS_CORE; i++) { |
2795 | qp = port_priv->qp_info[i].qp; | |
fac70d51 EC |
2796 | if (!qp) |
2797 | continue; | |
2798 | ||
1da177e4 LT |
2799 | /* |
2800 | * PKey index for QP1 is irrelevant but | |
2801 | * one is needed for the Reset to Init transition | |
2802 | */ | |
2803 | attr->qp_state = IB_QPS_INIT; | |
ef5ed416 | 2804 | attr->pkey_index = pkey_index; |
1da177e4 LT |
2805 | attr->qkey = (qp->qp_num == 0) ? 0 : IB_QP1_QKEY; |
2806 | ret = ib_modify_qp(qp, attr, IB_QP_STATE | | |
2807 | IB_QP_PKEY_INDEX | IB_QP_QKEY); | |
2808 | if (ret) { | |
7ef5d4b0 IW |
2809 | dev_err(&port_priv->device->dev, |
2810 | "Couldn't change QP%d state to INIT: %d\n", | |
2811 | i, ret); | |
1da177e4 LT |
2812 | goto out; |
2813 | } | |
2814 | ||
2815 | attr->qp_state = IB_QPS_RTR; | |
2816 | ret = ib_modify_qp(qp, attr, IB_QP_STATE); | |
2817 | if (ret) { | |
7ef5d4b0 IW |
2818 | dev_err(&port_priv->device->dev, |
2819 | "Couldn't change QP%d state to RTR: %d\n", | |
2820 | i, ret); | |
1da177e4 LT |
2821 | goto out; |
2822 | } | |
2823 | ||
2824 | attr->qp_state = IB_QPS_RTS; | |
2825 | attr->sq_psn = IB_MAD_SEND_Q_PSN; | |
2826 | ret = ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
2827 | if (ret) { | |
7ef5d4b0 IW |
2828 | dev_err(&port_priv->device->dev, |
2829 | "Couldn't change QP%d state to RTS: %d\n", | |
2830 | i, ret); | |
1da177e4 LT |
2831 | goto out; |
2832 | } | |
2833 | } | |
2834 | ||
2835 | ret = ib_req_notify_cq(port_priv->cq, IB_CQ_NEXT_COMP); | |
2836 | if (ret) { | |
7ef5d4b0 IW |
2837 | dev_err(&port_priv->device->dev, |
2838 | "Failed to request completion notification: %d\n", | |
2839 | ret); | |
1da177e4 LT |
2840 | goto out; |
2841 | } | |
2842 | ||
2843 | for (i = 0; i < IB_MAD_QPS_CORE; i++) { | |
fac70d51 EC |
2844 | if (!port_priv->qp_info[i].qp) |
2845 | continue; | |
2846 | ||
1da177e4 LT |
2847 | ret = ib_mad_post_receive_mads(&port_priv->qp_info[i], NULL); |
2848 | if (ret) { | |
7ef5d4b0 IW |
2849 | dev_err(&port_priv->device->dev, |
2850 | "Couldn't post receive WRs\n"); | |
1da177e4 LT |
2851 | goto out; |
2852 | } | |
2853 | } | |
2854 | out: | |
2855 | kfree(attr); | |
2856 | return ret; | |
2857 | } | |
2858 | ||
2859 | static void qp_event_handler(struct ib_event *event, void *qp_context) | |
2860 | { | |
2861 | struct ib_mad_qp_info *qp_info = qp_context; | |
2862 | ||
2863 | /* It's worse than that! He's dead, Jim! */ | |
7ef5d4b0 | 2864 | dev_err(&qp_info->port_priv->device->dev, |
3cea7b4a | 2865 | "Fatal error (%d) on MAD QP (%u)\n", |
1da177e4 LT |
2866 | event->event, qp_info->qp->qp_num); |
2867 | } | |
2868 | ||
2869 | static void init_mad_queue(struct ib_mad_qp_info *qp_info, | |
2870 | struct ib_mad_queue *mad_queue) | |
2871 | { | |
2872 | mad_queue->qp_info = qp_info; | |
2873 | mad_queue->count = 0; | |
2874 | spin_lock_init(&mad_queue->lock); | |
2875 | INIT_LIST_HEAD(&mad_queue->list); | |
2876 | } | |
2877 | ||
2878 | static void init_mad_qp(struct ib_mad_port_private *port_priv, | |
2879 | struct ib_mad_qp_info *qp_info) | |
2880 | { | |
2881 | qp_info->port_priv = port_priv; | |
2882 | init_mad_queue(qp_info, &qp_info->send_queue); | |
2883 | init_mad_queue(qp_info, &qp_info->recv_queue); | |
2884 | INIT_LIST_HEAD(&qp_info->overflow_list); | |
1da177e4 LT |
2885 | } |
2886 | ||
2887 | static int create_mad_qp(struct ib_mad_qp_info *qp_info, | |
2888 | enum ib_qp_type qp_type) | |
2889 | { | |
2890 | struct ib_qp_init_attr qp_init_attr; | |
2891 | int ret; | |
2892 | ||
2893 | memset(&qp_init_attr, 0, sizeof qp_init_attr); | |
2894 | qp_init_attr.send_cq = qp_info->port_priv->cq; | |
2895 | qp_init_attr.recv_cq = qp_info->port_priv->cq; | |
2896 | qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; | |
b76aabc3 HR |
2897 | qp_init_attr.cap.max_send_wr = mad_sendq_size; |
2898 | qp_init_attr.cap.max_recv_wr = mad_recvq_size; | |
1da177e4 LT |
2899 | qp_init_attr.cap.max_send_sge = IB_MAD_SEND_REQ_MAX_SG; |
2900 | qp_init_attr.cap.max_recv_sge = IB_MAD_RECV_REQ_MAX_SG; | |
2901 | qp_init_attr.qp_type = qp_type; | |
2902 | qp_init_attr.port_num = qp_info->port_priv->port_num; | |
2903 | qp_init_attr.qp_context = qp_info; | |
2904 | qp_init_attr.event_handler = qp_event_handler; | |
2905 | qp_info->qp = ib_create_qp(qp_info->port_priv->pd, &qp_init_attr); | |
2906 | if (IS_ERR(qp_info->qp)) { | |
7ef5d4b0 IW |
2907 | dev_err(&qp_info->port_priv->device->dev, |
2908 | "Couldn't create ib_mad QP%d\n", | |
2909 | get_spl_qp_index(qp_type)); | |
1da177e4 LT |
2910 | ret = PTR_ERR(qp_info->qp); |
2911 | goto error; | |
2912 | } | |
2913 | /* Use minimum queue sizes unless the CQ is resized */ | |
b76aabc3 HR |
2914 | qp_info->send_queue.max_active = mad_sendq_size; |
2915 | qp_info->recv_queue.max_active = mad_recvq_size; | |
1da177e4 LT |
2916 | return 0; |
2917 | ||
2918 | error: | |
2919 | return ret; | |
2920 | } | |
2921 | ||
2922 | static void destroy_mad_qp(struct ib_mad_qp_info *qp_info) | |
2923 | { | |
fac70d51 EC |
2924 | if (!qp_info->qp) |
2925 | return; | |
2926 | ||
1da177e4 | 2927 | ib_destroy_qp(qp_info->qp); |
1da177e4 LT |
2928 | } |
2929 | ||
2930 | /* | |
2931 | * Open the port | |
2932 | * Create the QP, PD, MR, and CQ if needed | |
2933 | */ | |
2934 | static int ib_mad_port_open(struct ib_device *device, | |
1fb7f897 | 2935 | u32 port_num) |
1da177e4 LT |
2936 | { |
2937 | int ret, cq_size; | |
2938 | struct ib_mad_port_private *port_priv; | |
2939 | unsigned long flags; | |
2940 | char name[sizeof "ib_mad123"]; | |
fac70d51 | 2941 | int has_smi; |
1da177e4 | 2942 | |
337877a4 IW |
2943 | if (WARN_ON(rdma_max_mad_size(device, port_num) < IB_MGMT_MAD_SIZE)) |
2944 | return -EFAULT; | |
2945 | ||
548ead17 IW |
2946 | if (WARN_ON(rdma_cap_opa_mad(device, port_num) && |
2947 | rdma_max_mad_size(device, port_num) < OPA_MGMT_MAD_SIZE)) | |
2948 | return -EFAULT; | |
2949 | ||
1da177e4 | 2950 | /* Create new device info */ |
de6eb66b | 2951 | port_priv = kzalloc(sizeof *port_priv, GFP_KERNEL); |
27162432 | 2952 | if (!port_priv) |
1da177e4 | 2953 | return -ENOMEM; |
de6eb66b | 2954 | |
1da177e4 LT |
2955 | port_priv->device = device; |
2956 | port_priv->port_num = port_num; | |
2957 | spin_lock_init(&port_priv->reg_lock); | |
1da177e4 LT |
2958 | init_mad_qp(port_priv, &port_priv->qp_info[0]); |
2959 | init_mad_qp(port_priv, &port_priv->qp_info[1]); | |
2960 | ||
fac70d51 | 2961 | cq_size = mad_sendq_size + mad_recvq_size; |
29541e3a | 2962 | has_smi = rdma_cap_ib_smi(device, port_num); |
fac70d51 EC |
2963 | if (has_smi) |
2964 | cq_size *= 2; | |
2965 | ||
770b7d96 JM |
2966 | port_priv->pd = ib_alloc_pd(device, 0); |
2967 | if (IS_ERR(port_priv->pd)) { | |
2968 | dev_err(&device->dev, "Couldn't create ib_mad PD\n"); | |
2969 | ret = PTR_ERR(port_priv->pd); | |
2970 | goto error3; | |
2971 | } | |
2972 | ||
d53e11fd | 2973 | port_priv->cq = ib_alloc_cq(port_priv->device, port_priv, cq_size, 0, |
f794809a | 2974 | IB_POLL_UNBOUND_WORKQUEUE); |
1da177e4 | 2975 | if (IS_ERR(port_priv->cq)) { |
7ef5d4b0 | 2976 | dev_err(&device->dev, "Couldn't create ib_mad CQ\n"); |
1da177e4 | 2977 | ret = PTR_ERR(port_priv->cq); |
1da177e4 LT |
2978 | goto error4; |
2979 | } | |
2980 | ||
fac70d51 EC |
2981 | if (has_smi) { |
2982 | ret = create_mad_qp(&port_priv->qp_info[0], IB_QPT_SMI); | |
2983 | if (ret) | |
2984 | goto error6; | |
2985 | } | |
1da177e4 LT |
2986 | ret = create_mad_qp(&port_priv->qp_info[1], IB_QPT_GSI); |
2987 | if (ret) | |
2988 | goto error7; | |
2989 | ||
1fb7f897 | 2990 | snprintf(name, sizeof(name), "ib_mad%u", port_num); |
1c99e299 | 2991 | port_priv->wq = alloc_ordered_workqueue(name, WQ_MEM_RECLAIM); |
1da177e4 LT |
2992 | if (!port_priv->wq) { |
2993 | ret = -ENOMEM; | |
2994 | goto error8; | |
2995 | } | |
1da177e4 | 2996 | |
dc05980d MT |
2997 | spin_lock_irqsave(&ib_mad_port_list_lock, flags); |
2998 | list_add_tail(&port_priv->port_list, &ib_mad_port_list); | |
2999 | spin_unlock_irqrestore(&ib_mad_port_list_lock, flags); | |
3000 | ||
1da177e4 LT |
3001 | ret = ib_mad_port_start(port_priv); |
3002 | if (ret) { | |
7ef5d4b0 | 3003 | dev_err(&device->dev, "Couldn't start port\n"); |
1da177e4 LT |
3004 | goto error9; |
3005 | } | |
3006 | ||
1da177e4 LT |
3007 | return 0; |
3008 | ||
3009 | error9: | |
dc05980d MT |
3010 | spin_lock_irqsave(&ib_mad_port_list_lock, flags); |
3011 | list_del_init(&port_priv->port_list); | |
3012 | spin_unlock_irqrestore(&ib_mad_port_list_lock, flags); | |
3013 | ||
1da177e4 LT |
3014 | destroy_workqueue(port_priv->wq); |
3015 | error8: | |
3016 | destroy_mad_qp(&port_priv->qp_info[1]); | |
3017 | error7: | |
3018 | destroy_mad_qp(&port_priv->qp_info[0]); | |
3019 | error6: | |
d53e11fd | 3020 | ib_free_cq(port_priv->cq); |
1da177e4 LT |
3021 | cleanup_recv_queue(&port_priv->qp_info[1]); |
3022 | cleanup_recv_queue(&port_priv->qp_info[0]); | |
770b7d96 JM |
3023 | error4: |
3024 | ib_dealloc_pd(port_priv->pd); | |
1da177e4 LT |
3025 | error3: |
3026 | kfree(port_priv); | |
3027 | ||
3028 | return ret; | |
3029 | } | |
3030 | ||
3031 | /* | |
3032 | * Close the port | |
3033 | * If there are no classes using the port, free the port | |
3034 | * resources (CQ, MR, PD, QP) and remove the port's info structure | |
3035 | */ | |
1fb7f897 | 3036 | static int ib_mad_port_close(struct ib_device *device, u32 port_num) |
1da177e4 LT |
3037 | { |
3038 | struct ib_mad_port_private *port_priv; | |
3039 | unsigned long flags; | |
3040 | ||
3041 | spin_lock_irqsave(&ib_mad_port_list_lock, flags); | |
3042 | port_priv = __ib_get_mad_port(device, port_num); | |
3043 | if (port_priv == NULL) { | |
3044 | spin_unlock_irqrestore(&ib_mad_port_list_lock, flags); | |
1fb7f897 | 3045 | dev_err(&device->dev, "Port %u not found\n", port_num); |
1da177e4 LT |
3046 | return -ENODEV; |
3047 | } | |
dc05980d | 3048 | list_del_init(&port_priv->port_list); |
1da177e4 LT |
3049 | spin_unlock_irqrestore(&ib_mad_port_list_lock, flags); |
3050 | ||
1da177e4 LT |
3051 | destroy_workqueue(port_priv->wq); |
3052 | destroy_mad_qp(&port_priv->qp_info[1]); | |
3053 | destroy_mad_qp(&port_priv->qp_info[0]); | |
d53e11fd | 3054 | ib_free_cq(port_priv->cq); |
770b7d96 | 3055 | ib_dealloc_pd(port_priv->pd); |
1da177e4 LT |
3056 | cleanup_recv_queue(&port_priv->qp_info[1]); |
3057 | cleanup_recv_queue(&port_priv->qp_info[0]); | |
3058 | /* XXX: Handle deallocation of MAD registration tables */ | |
3059 | ||
3060 | kfree(port_priv); | |
3061 | ||
3062 | return 0; | |
3063 | } | |
3064 | ||
11a0ae4c | 3065 | static int ib_mad_init_device(struct ib_device *device) |
1da177e4 | 3066 | { |
4139032b | 3067 | int start, i; |
11a0ae4c JG |
3068 | unsigned int count = 0; |
3069 | int ret; | |
1da177e4 | 3070 | |
4139032b | 3071 | start = rdma_start_port(device); |
4ab6fb7e | 3072 | |
4139032b | 3073 | for (i = start; i <= rdma_end_port(device); i++) { |
c757dea8 | 3074 | if (!rdma_cap_ib_mad(device, i)) |
827f2a8b MW |
3075 | continue; |
3076 | ||
11a0ae4c JG |
3077 | ret = ib_mad_port_open(device, i); |
3078 | if (ret) { | |
7ef5d4b0 | 3079 | dev_err(&device->dev, "Couldn't open port %d\n", i); |
4ab6fb7e | 3080 | goto error; |
1da177e4 | 3081 | } |
11a0ae4c JG |
3082 | ret = ib_agent_port_open(device, i); |
3083 | if (ret) { | |
7ef5d4b0 IW |
3084 | dev_err(&device->dev, |
3085 | "Couldn't open port %d for agents\n", i); | |
4ab6fb7e | 3086 | goto error_agent; |
1da177e4 | 3087 | } |
11a0ae4c | 3088 | count++; |
1da177e4 | 3089 | } |
11a0ae4c JG |
3090 | if (!count) |
3091 | return -EOPNOTSUPP; | |
3092 | ||
3093 | return 0; | |
1da177e4 | 3094 | |
4ab6fb7e RD |
3095 | error_agent: |
3096 | if (ib_mad_port_close(device, i)) | |
7ef5d4b0 | 3097 | dev_err(&device->dev, "Couldn't close port %d\n", i); |
4ab6fb7e RD |
3098 | |
3099 | error: | |
827f2a8b | 3100 | while (--i >= start) { |
c757dea8 | 3101 | if (!rdma_cap_ib_mad(device, i)) |
827f2a8b | 3102 | continue; |
4ab6fb7e | 3103 | |
4ab6fb7e | 3104 | if (ib_agent_port_close(device, i)) |
7ef5d4b0 IW |
3105 | dev_err(&device->dev, |
3106 | "Couldn't close port %d for agents\n", i); | |
4ab6fb7e | 3107 | if (ib_mad_port_close(device, i)) |
7ef5d4b0 | 3108 | dev_err(&device->dev, "Couldn't close port %d\n", i); |
1da177e4 | 3109 | } |
11a0ae4c | 3110 | return ret; |
1da177e4 LT |
3111 | } |
3112 | ||
7c1eb45a | 3113 | static void ib_mad_remove_device(struct ib_device *device, void *client_data) |
1da177e4 | 3114 | { |
ea1075ed | 3115 | unsigned int i; |
827f2a8b | 3116 | |
ea1075ed | 3117 | rdma_for_each_port (device, i) { |
c757dea8 | 3118 | if (!rdma_cap_ib_mad(device, i)) |
827f2a8b MW |
3119 | continue; |
3120 | ||
3121 | if (ib_agent_port_close(device, i)) | |
7ef5d4b0 | 3122 | dev_err(&device->dev, |
3cea7b4a | 3123 | "Couldn't close port %u for agents\n", i); |
827f2a8b | 3124 | if (ib_mad_port_close(device, i)) |
3cea7b4a | 3125 | dev_err(&device->dev, "Couldn't close port %u\n", i); |
1da177e4 LT |
3126 | } |
3127 | } | |
3128 | ||
3129 | static struct ib_client mad_client = { | |
3130 | .name = "mad", | |
3131 | .add = ib_mad_init_device, | |
3132 | .remove = ib_mad_remove_device | |
3133 | }; | |
3134 | ||
4c2cb422 | 3135 | int ib_mad_init(void) |
1da177e4 | 3136 | { |
b76aabc3 HR |
3137 | mad_recvq_size = min(mad_recvq_size, IB_MAD_QP_MAX_SIZE); |
3138 | mad_recvq_size = max(mad_recvq_size, IB_MAD_QP_MIN_SIZE); | |
3139 | ||
3140 | mad_sendq_size = min(mad_sendq_size, IB_MAD_QP_MAX_SIZE); | |
3141 | mad_sendq_size = max(mad_sendq_size, IB_MAD_QP_MIN_SIZE); | |
3142 | ||
1da177e4 LT |
3143 | INIT_LIST_HEAD(&ib_mad_port_list); |
3144 | ||
3145 | if (ib_register_client(&mad_client)) { | |
7ef5d4b0 | 3146 | pr_err("Couldn't register ib_mad client\n"); |
c9082e51 | 3147 | return -EINVAL; |
1da177e4 LT |
3148 | } |
3149 | ||
3150 | return 0; | |
1da177e4 LT |
3151 | } |
3152 | ||
4c2cb422 | 3153 | void ib_mad_cleanup(void) |
1da177e4 LT |
3154 | { |
3155 | ib_unregister_client(&mad_client); | |
1da177e4 | 3156 | } |