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c803536e SS |
1 | /* |
2 | * Copyright (c) 2014 VMware, Inc. | |
3 | * | |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | /* | |
18 | * This file contains the implementation of the management functionality of the | |
19 | * OVS. | |
20 | */ | |
21 | ||
22 | #include "precomp.h" | |
23 | ||
fa1324c9 SG |
24 | #include "Switch.h" |
25 | #include "Vport.h" | |
26 | #include "Event.h" | |
27 | #include "Flow.h" | |
28 | #include "IpHelper.h" | |
fa1324c9 | 29 | #include "Oid.h" |
c803536e SS |
30 | |
31 | #ifdef OVS_DBG_MOD | |
32 | #undef OVS_DBG_MOD | |
33 | #endif | |
34 | #define OVS_DBG_MOD OVS_DBG_SWITCH | |
fa1324c9 | 35 | #include "Debug.h" |
c803536e SS |
36 | |
37 | POVS_SWITCH_CONTEXT gOvsSwitchContext; | |
3ed424e5 | 38 | LONG volatile gOvsInAttach; |
4f3988e0 NR |
39 | UINT64 ovsTimeIncrementPerTick; |
40 | ||
c803536e SS |
41 | extern NDIS_HANDLE gOvsExtDriverHandle; |
42 | extern NDIS_HANDLE gOvsExtDriverObject; | |
9719aee5 | 43 | extern PDEVICE_OBJECT gOvsDeviceObject; |
c803536e | 44 | |
6c4e7adb SV |
45 | /* |
46 | * Reference count used to prevent premature deallocation of the global switch | |
47 | * context structure, gOvsSwitchContext. | |
48 | */ | |
18b19ad9 | 49 | volatile LONG gOvsSwitchContextRefCount = 0; |
6c4e7adb | 50 | |
c803536e SS |
51 | static NDIS_STATUS OvsCreateSwitch(NDIS_HANDLE ndisFilterHandle, |
52 | POVS_SWITCH_CONTEXT *switchContextOut); | |
53 | static NDIS_STATUS OvsInitSwitchContext(POVS_SWITCH_CONTEXT switchContext); | |
54 | static VOID OvsDeleteSwitch(POVS_SWITCH_CONTEXT switchContext); | |
3a6de110 | 55 | static VOID OvsUninitSwitchContext(POVS_SWITCH_CONTEXT switchContext); |
c803536e SS |
56 | static NDIS_STATUS OvsActivateSwitch(POVS_SWITCH_CONTEXT switchContext); |
57 | ||
58 | ||
59 | /* | |
60 | * -------------------------------------------------------------------------- | |
61 | * Implements filter driver's FilterAttach function. | |
62 | * | |
63 | * This function allocates the switch context, and initializes its necessary | |
64 | * members. | |
65 | * -------------------------------------------------------------------------- | |
66 | */ | |
67 | NDIS_STATUS | |
68 | OvsExtAttach(NDIS_HANDLE ndisFilterHandle, | |
69 | NDIS_HANDLE filterDriverContext, | |
70 | PNDIS_FILTER_ATTACH_PARAMETERS attachParameters) | |
71 | { | |
72 | NDIS_STATUS status = NDIS_STATUS_FAILURE; | |
73 | NDIS_FILTER_ATTRIBUTES ovsExtAttributes; | |
74 | POVS_SWITCH_CONTEXT switchContext = NULL; | |
75 | ||
76 | UNREFERENCED_PARAMETER(filterDriverContext); | |
77 | ||
78 | OVS_LOG_TRACE("Enter: ndisFilterHandle %p", ndisFilterHandle); | |
79 | ||
80 | ASSERT(filterDriverContext == (NDIS_HANDLE)gOvsExtDriverObject); | |
81 | if (attachParameters->MiniportMediaType != NdisMedium802_3) { | |
82 | status = NDIS_STATUS_INVALID_PARAMETER; | |
83 | goto cleanup; | |
84 | } | |
85 | ||
86 | if (gOvsExtDriverHandle == NULL) { | |
87 | OVS_LOG_TRACE("Exit: OVSEXT driver is not loaded."); | |
88 | ASSERT(FALSE); | |
89 | goto cleanup; | |
90 | } | |
91 | ||
c803536e | 92 | if (gOvsSwitchContext) { |
c803536e SS |
93 | OVS_LOG_TRACE("Exit: Failed to create OVS Switch, only one datapath is" |
94 | "supported, %p.", gOvsSwitchContext); | |
95 | goto cleanup; | |
96 | } | |
3ed424e5 SV |
97 | |
98 | if (InterlockedCompareExchange(&gOvsInAttach, 1, 0)) { | |
c803536e SS |
99 | /* Just fail the request. */ |
100 | OVS_LOG_TRACE("Exit: Failed to create OVS Switch, since another attach" | |
101 | "instance is in attach process."); | |
102 | goto cleanup; | |
103 | } | |
c803536e SS |
104 | |
105 | status = OvsInitIpHelper(ndisFilterHandle); | |
106 | if (status != STATUS_SUCCESS) { | |
107 | OVS_LOG_ERROR("Exit: Failed to initialize IP helper."); | |
108 | goto cleanup; | |
109 | } | |
110 | ||
111 | status = OvsCreateSwitch(ndisFilterHandle, &switchContext); | |
112 | if (status != NDIS_STATUS_SUCCESS) { | |
113 | OvsCleanupIpHelper(); | |
114 | goto cleanup; | |
115 | } | |
116 | ASSERT(switchContext); | |
117 | ||
118 | /* | |
119 | * Register the switch context with NDIS so NDIS can pass it back to the | |
3ed424e5 | 120 | * FilterXXX callback functions as the 'FilterModuleContext' parameter. |
c803536e SS |
121 | */ |
122 | RtlZeroMemory(&ovsExtAttributes, sizeof(NDIS_FILTER_ATTRIBUTES)); | |
123 | ovsExtAttributes.Header.Revision = NDIS_FILTER_ATTRIBUTES_REVISION_1; | |
124 | ovsExtAttributes.Header.Size = sizeof(NDIS_FILTER_ATTRIBUTES); | |
125 | ovsExtAttributes.Header.Type = NDIS_OBJECT_TYPE_FILTER_ATTRIBUTES; | |
126 | ovsExtAttributes.Flags = 0; | |
127 | ||
128 | NDIS_DECLARE_FILTER_MODULE_CONTEXT(OVS_SWITCH_CONTEXT); | |
129 | status = NdisFSetAttributes(ndisFilterHandle, switchContext, &ovsExtAttributes); | |
130 | if (status != NDIS_STATUS_SUCCESS) { | |
131 | OVS_LOG_ERROR("Failed to set attributes."); | |
132 | OvsCleanupIpHelper(); | |
133 | goto cleanup; | |
134 | } | |
135 | ||
136 | /* Setup the state machine. */ | |
137 | switchContext->controlFlowState = OvsSwitchAttached; | |
138 | switchContext->dataFlowState = OvsSwitchPaused; | |
139 | ||
18b19ad9 | 140 | gOvsSwitchContextRefCount = 1; |
c803536e SS |
141 | gOvsSwitchContext = switchContext; |
142 | KeMemoryBarrier(); | |
143 | ||
144 | cleanup: | |
145 | gOvsInAttach = FALSE; | |
146 | if (status != NDIS_STATUS_SUCCESS) { | |
147 | if (switchContext != NULL) { | |
148 | OvsDeleteSwitch(switchContext); | |
149 | } | |
150 | } | |
151 | OVS_LOG_TRACE("Exit: status %x", status); | |
152 | ||
153 | return status; | |
154 | } | |
155 | ||
156 | ||
157 | /* | |
158 | * -------------------------------------------------------------------------- | |
159 | * This function allocated the switch context, and initializes its necessary | |
160 | * members. | |
161 | * -------------------------------------------------------------------------- | |
162 | */ | |
163 | NDIS_STATUS | |
164 | OvsCreateSwitch(NDIS_HANDLE ndisFilterHandle, | |
165 | POVS_SWITCH_CONTEXT *switchContextOut) | |
166 | { | |
167 | NDIS_STATUS status; | |
168 | POVS_SWITCH_CONTEXT switchContext; | |
169 | NDIS_SWITCH_CONTEXT hostSwitchContext; | |
170 | NDIS_SWITCH_OPTIONAL_HANDLERS hostSwitchHandler; | |
171 | ||
172 | OVS_LOG_TRACE("Enter: Create switch object"); | |
173 | ||
ba7f9d90 SV |
174 | switchContext = (POVS_SWITCH_CONTEXT) OvsAllocateMemoryWithTag( |
175 | sizeof(OVS_SWITCH_CONTEXT), OVS_SWITCH_POOL_TAG); | |
c803536e SS |
176 | if (switchContext == NULL) { |
177 | status = NDIS_STATUS_RESOURCES; | |
178 | goto create_switch_done; | |
179 | } | |
180 | RtlZeroMemory(switchContext, sizeof(OVS_SWITCH_CONTEXT)); | |
181 | ||
182 | /* Initialize the switch. */ | |
183 | hostSwitchHandler.Header.Type = NDIS_OBJECT_TYPE_SWITCH_OPTIONAL_HANDLERS; | |
184 | hostSwitchHandler.Header.Size = NDIS_SIZEOF_SWITCH_OPTIONAL_HANDLERS_REVISION_1; | |
185 | hostSwitchHandler.Header.Revision = NDIS_SWITCH_OPTIONAL_HANDLERS_REVISION_1; | |
186 | ||
187 | status = NdisFGetOptionalSwitchHandlers(ndisFilterHandle, | |
188 | &hostSwitchContext, | |
189 | &hostSwitchHandler); | |
190 | if (status != NDIS_STATUS_SUCCESS) { | |
191 | OVS_LOG_ERROR("OvsExtAttach: Extension is running in " | |
192 | "non-switch environment."); | |
ba7f9d90 | 193 | OvsFreeMemoryWithTag(switchContext, OVS_SWITCH_POOL_TAG); |
c803536e SS |
194 | goto create_switch_done; |
195 | } | |
196 | ||
197 | switchContext->NdisFilterHandle = ndisFilterHandle; | |
198 | switchContext->NdisSwitchContext = hostSwitchContext; | |
199 | RtlCopyMemory(&switchContext->NdisSwitchHandlers, &hostSwitchHandler, | |
200 | sizeof(NDIS_SWITCH_OPTIONAL_HANDLERS)); | |
201 | ||
202 | status = OvsInitSwitchContext(switchContext); | |
203 | if (status != NDIS_STATUS_SUCCESS) { | |
ba7f9d90 | 204 | OvsFreeMemoryWithTag(switchContext, OVS_SWITCH_POOL_TAG); |
8e2fe95e | 205 | switchContext = NULL; |
c803536e SS |
206 | goto create_switch_done; |
207 | } | |
208 | ||
9719aee5 | 209 | status = OvsInitTunnelFilter(gOvsExtDriverObject, gOvsDeviceObject); |
c803536e | 210 | if (status != NDIS_STATUS_SUCCESS) { |
3a6de110 | 211 | OvsUninitSwitchContext(switchContext); |
c803536e SS |
212 | goto create_switch_done; |
213 | } | |
9719aee5 | 214 | |
cab433d0 SV |
215 | status = OvsInitSttDefragmentation(); |
216 | if (status != STATUS_SUCCESS) { | |
217 | OVS_LOG_ERROR("Exit: Failed to initialize Stt Defragmentation"); | |
218 | goto create_switch_done; | |
219 | } | |
220 | ||
c803536e SS |
221 | *switchContextOut = switchContext; |
222 | ||
223 | create_switch_done: | |
224 | OVS_LOG_TRACE("Exit: switchContext: %p status: %#lx", | |
225 | switchContext, status); | |
226 | return status; | |
227 | } | |
228 | ||
229 | ||
230 | /* | |
231 | * -------------------------------------------------------------------------- | |
232 | * Implements filter driver's FilterDetach function. | |
233 | * -------------------------------------------------------------------------- | |
234 | */ | |
235 | _Use_decl_annotations_ | |
236 | VOID | |
237 | OvsExtDetach(NDIS_HANDLE filterModuleContext) | |
238 | { | |
239 | POVS_SWITCH_CONTEXT switchContext = (POVS_SWITCH_CONTEXT)filterModuleContext; | |
240 | ||
241 | OVS_LOG_TRACE("Enter: filterModuleContext %p", filterModuleContext); | |
242 | ||
243 | ASSERT(switchContext->dataFlowState == OvsSwitchPaused); | |
244 | switchContext->controlFlowState = OvsSwitchDetached; | |
245 | KeMemoryBarrier(); | |
246 | while(switchContext->pendingOidCount > 0) { | |
247 | NdisMSleep(1000); | |
248 | } | |
249 | OvsDeleteSwitch(switchContext); | |
250 | OvsCleanupIpHelper(); | |
cab433d0 | 251 | OvsCleanupSttDefragmentation(); |
c803536e SS |
252 | /* This completes the cleanup, and a new attach can be handled now. */ |
253 | ||
254 | OVS_LOG_TRACE("Exit: OvsDetach Successfully"); | |
255 | } | |
256 | ||
257 | ||
258 | /* | |
259 | * -------------------------------------------------------------------------- | |
260 | * This function deletes the switch by freeing all memory previously allocated. | |
261 | * XXX need synchronization with other path. | |
262 | * -------------------------------------------------------------------------- | |
263 | */ | |
264 | VOID | |
265 | OvsDeleteSwitch(POVS_SWITCH_CONTEXT switchContext) | |
266 | { | |
3a6de110 | 267 | UINT32 dpNo = (UINT32) -1; |
c803536e SS |
268 | |
269 | OVS_LOG_TRACE("Enter: switchContext:%p", switchContext); | |
270 | ||
3a6de110 SV |
271 | if (switchContext) |
272 | { | |
273 | dpNo = switchContext->dpNo; | |
3a6de110 | 274 | OvsClearAllSwitchVports(switchContext); |
5e82ceef | 275 | OvsUninitTunnelFilter(gOvsExtDriverObject); |
3a6de110 | 276 | OvsUninitSwitchContext(switchContext); |
3a6de110 | 277 | } |
c803536e SS |
278 | OVS_LOG_TRACE("Exit: deleted switch %p dpNo: %d", switchContext, dpNo); |
279 | } | |
280 | ||
281 | ||
282 | /* | |
283 | * -------------------------------------------------------------------------- | |
284 | * Implements filter driver's FilterRestart function. | |
285 | * -------------------------------------------------------------------------- | |
286 | */ | |
287 | _Use_decl_annotations_ | |
288 | NDIS_STATUS | |
289 | OvsExtRestart(NDIS_HANDLE filterModuleContext, | |
290 | PNDIS_FILTER_RESTART_PARAMETERS filterRestartParameters) | |
291 | { | |
292 | POVS_SWITCH_CONTEXT switchContext = (POVS_SWITCH_CONTEXT)filterModuleContext; | |
293 | NDIS_STATUS status = NDIS_STATUS_SUCCESS; | |
294 | BOOLEAN switchActive; | |
295 | ||
296 | UNREFERENCED_PARAMETER(filterRestartParameters); | |
297 | ||
298 | OVS_LOG_TRACE("Enter: filterModuleContext %p", | |
299 | filterModuleContext); | |
300 | ||
301 | /* Activate the switch if this is the first restart. */ | |
302 | if (!switchContext->isActivated && !switchContext->isActivateFailed) { | |
303 | status = OvsQuerySwitchActivationComplete(switchContext, | |
304 | &switchActive); | |
305 | if (status != NDIS_STATUS_SUCCESS) { | |
306 | switchContext->isActivateFailed = TRUE; | |
307 | status = NDIS_STATUS_RESOURCES; | |
308 | goto cleanup; | |
309 | } | |
310 | ||
311 | if (switchActive) { | |
312 | status = OvsActivateSwitch(switchContext); | |
313 | ||
314 | if (status != NDIS_STATUS_SUCCESS) { | |
315 | OVS_LOG_WARN("Failed to activate switch, dpNo:%d", | |
316 | switchContext->dpNo); | |
317 | status = NDIS_STATUS_RESOURCES; | |
318 | goto cleanup; | |
319 | } | |
320 | } | |
321 | } | |
322 | ||
323 | ASSERT(switchContext->dataFlowState == OvsSwitchPaused); | |
324 | switchContext->dataFlowState = OvsSwitchRunning; | |
325 | ||
326 | cleanup: | |
327 | OVS_LOG_TRACE("Exit: Restart switch:%p, dpNo: %d, status: %#x", | |
328 | switchContext, switchContext->dpNo, status); | |
329 | return status; | |
330 | } | |
331 | ||
332 | ||
333 | /* | |
334 | * -------------------------------------------------------------------------- | |
335 | * Implements filter driver's FilterPause function | |
336 | * -------------------------------------------------------------------------- | |
337 | */ | |
338 | NDIS_STATUS | |
339 | OvsExtPause(NDIS_HANDLE filterModuleContext, | |
340 | PNDIS_FILTER_PAUSE_PARAMETERS pauseParameters) | |
341 | { | |
342 | POVS_SWITCH_CONTEXT switchContext = (POVS_SWITCH_CONTEXT)filterModuleContext; | |
343 | ||
344 | UNREFERENCED_PARAMETER(pauseParameters); | |
345 | OVS_LOG_TRACE("Enter: filterModuleContext %p", | |
346 | filterModuleContext); | |
347 | ||
348 | ASSERT(switchContext->dataFlowState == OvsSwitchRunning); | |
349 | switchContext->dataFlowState = OvsSwitchPaused; | |
350 | KeMemoryBarrier(); | |
351 | while(switchContext->pendingOidCount > 0) { | |
352 | NdisMSleep(1000); | |
353 | } | |
354 | ||
355 | OVS_LOG_TRACE("Exit: OvsDetach Successfully"); | |
356 | return NDIS_STATUS_SUCCESS; | |
357 | } | |
358 | ||
359 | static NDIS_STATUS | |
360 | OvsInitSwitchContext(POVS_SWITCH_CONTEXT switchContext) | |
361 | { | |
362 | int i; | |
363 | NTSTATUS status; | |
364 | ||
365 | OVS_LOG_TRACE("Enter: switchContext: %p", switchContext); | |
366 | ||
367 | switchContext->dispatchLock = | |
368 | NdisAllocateRWLock(switchContext->NdisFilterHandle); | |
369 | ||
ba7f9d90 SV |
370 | switchContext->portNoHashArray = (PLIST_ENTRY)OvsAllocateMemoryWithTag( |
371 | sizeof(LIST_ENTRY) * OVS_MAX_VPORT_ARRAY_SIZE, OVS_SWITCH_POOL_TAG); | |
372 | switchContext->ovsPortNameHashArray = (PLIST_ENTRY)OvsAllocateMemoryWithTag( | |
373 | sizeof(LIST_ENTRY) * OVS_MAX_VPORT_ARRAY_SIZE, OVS_SWITCH_POOL_TAG); | |
374 | switchContext->portIdHashArray= (PLIST_ENTRY)OvsAllocateMemoryWithTag( | |
375 | sizeof(LIST_ENTRY) * OVS_MAX_VPORT_ARRAY_SIZE, OVS_SWITCH_POOL_TAG); | |
376 | switchContext->pidHashArray = (PLIST_ENTRY)OvsAllocateMemoryWithTag( | |
377 | sizeof(LIST_ENTRY) * OVS_MAX_PID_ARRAY_SIZE, OVS_SWITCH_POOL_TAG); | |
ffde5f8f SV |
378 | switchContext->tunnelVportsArray = (PLIST_ENTRY)OvsAllocateMemoryWithTag( |
379 | sizeof(LIST_ENTRY) * OVS_MAX_VPORT_ARRAY_SIZE, OVS_SWITCH_POOL_TAG); | |
c803536e SS |
380 | status = OvsAllocateFlowTable(&switchContext->datapath, switchContext); |
381 | ||
382 | if (status == NDIS_STATUS_SUCCESS) { | |
383 | status = OvsInitBufferPool(switchContext); | |
384 | } | |
385 | if (status != NDIS_STATUS_SUCCESS || | |
386 | switchContext->dispatchLock == NULL || | |
429d4556 | 387 | switchContext->portNoHashArray == NULL || |
147c91db | 388 | switchContext->ovsPortNameHashArray == NULL || |
75752ef5 | 389 | switchContext->portIdHashArray== NULL || |
ffde5f8f SV |
390 | switchContext->pidHashArray == NULL || |
391 | switchContext->tunnelVportsArray == NULL) { | |
c803536e SS |
392 | if (switchContext->dispatchLock) { |
393 | NdisFreeRWLock(switchContext->dispatchLock); | |
394 | } | |
429d4556 | 395 | if (switchContext->portNoHashArray) { |
ba7f9d90 SV |
396 | OvsFreeMemoryWithTag(switchContext->portNoHashArray, |
397 | OVS_SWITCH_POOL_TAG); | |
c803536e | 398 | } |
147c91db | 399 | if (switchContext->ovsPortNameHashArray) { |
ba7f9d90 SV |
400 | OvsFreeMemoryWithTag(switchContext->ovsPortNameHashArray, |
401 | OVS_SWITCH_POOL_TAG); | |
c803536e | 402 | } |
91c261cd | 403 | if (switchContext->portIdHashArray) { |
ba7f9d90 SV |
404 | OvsFreeMemoryWithTag(switchContext->portIdHashArray, |
405 | OVS_SWITCH_POOL_TAG); | |
c803536e | 406 | } |
75752ef5 | 407 | if (switchContext->pidHashArray) { |
ba7f9d90 SV |
408 | OvsFreeMemoryWithTag(switchContext->pidHashArray, |
409 | OVS_SWITCH_POOL_TAG); | |
75752ef5 AS |
410 | } |
411 | ||
ffde5f8f SV |
412 | if (switchContext->tunnelVportsArray) { |
413 | OvsFreeMemory(switchContext->tunnelVportsArray); | |
414 | } | |
415 | ||
c803536e SS |
416 | OvsDeleteFlowTable(&switchContext->datapath); |
417 | OvsCleanupBufferPool(switchContext); | |
418 | ||
419 | OVS_LOG_TRACE("Exit: Failed to init switchContext"); | |
420 | return NDIS_STATUS_RESOURCES; | |
421 | } | |
422 | ||
423 | for (i = 0; i < OVS_MAX_VPORT_ARRAY_SIZE; i++) { | |
147c91db | 424 | InitializeListHead(&switchContext->ovsPortNameHashArray[i]); |
91c261cd | 425 | InitializeListHead(&switchContext->portIdHashArray[i]); |
429d4556 | 426 | InitializeListHead(&switchContext->portNoHashArray[i]); |
ffde5f8f | 427 | InitializeListHead(&switchContext->tunnelVportsArray[i]); |
429d4556 | 428 | } |
c803536e | 429 | |
75752ef5 AS |
430 | for (i = 0; i < OVS_MAX_PID_ARRAY_SIZE; i++) { |
431 | InitializeListHead(&switchContext->pidHashArray[i]); | |
432 | } | |
433 | ||
4a3c9b70 | 434 | NdisAllocateSpinLock(&(switchContext->pidHashLock)); |
c803536e SS |
435 | switchContext->isActivated = FALSE; |
436 | switchContext->isActivateFailed = FALSE; | |
437 | switchContext->dpNo = OVS_DP_NUMBER; | |
c803536e | 438 | ovsTimeIncrementPerTick = KeQueryTimeIncrement() / 10000; |
6c4e7adb | 439 | |
c803536e SS |
440 | OVS_LOG_TRACE("Exit: Succesfully initialized switchContext: %p", |
441 | switchContext); | |
442 | return NDIS_STATUS_SUCCESS; | |
443 | } | |
444 | ||
445 | static VOID | |
3a6de110 | 446 | OvsUninitSwitchContext(POVS_SWITCH_CONTEXT switchContext) |
6c4e7adb SV |
447 | { |
448 | OvsReleaseSwitchContext(switchContext); | |
449 | } | |
450 | ||
e1e29b26 NR |
451 | /* |
452 | * -------------------------------------------------------------------------- | |
453 | * Frees up the contents of and also the switch context. | |
454 | * -------------------------------------------------------------------------- | |
455 | */ | |
456 | static VOID | |
6c4e7adb | 457 | OvsDeleteSwitchContext(POVS_SWITCH_CONTEXT switchContext) |
c803536e SS |
458 | { |
459 | OVS_LOG_TRACE("Enter: Delete switchContext:%p", switchContext); | |
460 | ||
461 | /* We need to do cleanup for tunnel port here. */ | |
25e39a60 | 462 | ASSERT(switchContext->numHvVports == 0); |
35f20164 | 463 | ASSERT(switchContext->numNonHvVports == 0); |
c803536e SS |
464 | |
465 | NdisFreeRWLock(switchContext->dispatchLock); | |
3a6de110 | 466 | switchContext->dispatchLock = NULL; |
4a3c9b70 | 467 | NdisFreeSpinLock(&(switchContext->pidHashLock)); |
ba7f9d90 SV |
468 | OvsFreeMemoryWithTag(switchContext->ovsPortNameHashArray, |
469 | OVS_SWITCH_POOL_TAG); | |
3a6de110 | 470 | switchContext->ovsPortNameHashArray = NULL; |
ba7f9d90 SV |
471 | OvsFreeMemoryWithTag(switchContext->portIdHashArray, |
472 | OVS_SWITCH_POOL_TAG); | |
3a6de110 | 473 | switchContext->portIdHashArray = NULL; |
ba7f9d90 SV |
474 | OvsFreeMemoryWithTag(switchContext->portNoHashArray, |
475 | OVS_SWITCH_POOL_TAG); | |
3a6de110 | 476 | switchContext->portNoHashArray = NULL; |
ba7f9d90 SV |
477 | OvsFreeMemoryWithTag(switchContext->pidHashArray, |
478 | OVS_SWITCH_POOL_TAG); | |
3a6de110 | 479 | switchContext->pidHashArray = NULL; |
ffde5f8f SV |
480 | OvsFreeMemory(switchContext->tunnelVportsArray); |
481 | switchContext->tunnelVportsArray = NULL; | |
c803536e SS |
482 | OvsDeleteFlowTable(&switchContext->datapath); |
483 | OvsCleanupBufferPool(switchContext); | |
e1e29b26 NR |
484 | |
485 | OvsFreeMemoryWithTag(switchContext, OVS_SWITCH_POOL_TAG); | |
c803536e SS |
486 | OVS_LOG_TRACE("Exit: Delete switchContext: %p", switchContext); |
487 | } | |
488 | ||
6c4e7adb SV |
489 | VOID |
490 | OvsReleaseSwitchContext(POVS_SWITCH_CONTEXT switchContext) | |
491 | { | |
492 | LONG ref = 0; | |
493 | LONG newRef = 0; | |
494 | LONG icxRef = 0; | |
495 | ||
496 | do { | |
497 | ref = gOvsSwitchContextRefCount; | |
498 | newRef = (0 == ref) ? 0 : ref - 1; | |
499 | icxRef = InterlockedCompareExchange(&gOvsSwitchContextRefCount, | |
500 | newRef, | |
501 | ref); | |
502 | } while (icxRef != ref); | |
503 | ||
504 | if (ref == 1) { | |
505 | OvsDeleteSwitchContext(switchContext); | |
8e2fe95e | 506 | gOvsSwitchContext = NULL; |
6c4e7adb SV |
507 | } |
508 | } | |
509 | ||
510 | BOOLEAN | |
511 | OvsAcquireSwitchContext(VOID) | |
512 | { | |
513 | LONG ref = 0; | |
514 | LONG newRef = 0; | |
515 | LONG icxRef = 0; | |
516 | BOOLEAN ret = FALSE; | |
517 | ||
518 | do { | |
519 | ref = gOvsSwitchContextRefCount; | |
520 | newRef = (0 == ref) ? 0 : ref + 1; | |
521 | icxRef = InterlockedCompareExchange(&gOvsSwitchContextRefCount, | |
522 | newRef, | |
523 | ref); | |
524 | } while (icxRef != ref); | |
525 | ||
526 | if (ref != 0) { | |
527 | ret = TRUE; | |
528 | } | |
529 | ||
530 | return ret; | |
531 | } | |
532 | ||
c803536e SS |
533 | /* |
534 | * -------------------------------------------------------------------------- | |
535 | * This function activates the switch by initializing it with all the runtime | |
536 | * state. First it queries all of the MAC addresses set as custom switch policy | |
537 | * to allow sends from, and adds tme to the property list. Then it queries the | |
538 | * NIC list and verifies it can support all of the NICs currently connected to | |
539 | * the switch, and adds the NICs to the NIC list. | |
540 | * -------------------------------------------------------------------------- | |
541 | */ | |
542 | static NDIS_STATUS | |
543 | OvsActivateSwitch(POVS_SWITCH_CONTEXT switchContext) | |
544 | { | |
545 | NDIS_STATUS status; | |
546 | ||
547 | ASSERT(!switchContext->isActivated); | |
548 | ||
549 | OVS_LOG_TRACE("Enter: activate switch %p, dpNo: %ld", | |
550 | switchContext, switchContext->dpNo); | |
551 | ||
13165df9 | 552 | switchContext->isActivated = TRUE; |
c803536e SS |
553 | status = OvsAddConfiguredSwitchPorts(switchContext); |
554 | ||
555 | if (status != NDIS_STATUS_SUCCESS) { | |
556 | OVS_LOG_WARN("Failed to add configured switch ports"); | |
557 | goto cleanup; | |
558 | ||
559 | } | |
560 | status = OvsInitConfiguredSwitchNics(switchContext); | |
561 | ||
562 | if (status != NDIS_STATUS_SUCCESS) { | |
563 | OVS_LOG_WARN("Failed to add configured vports"); | |
564 | OvsClearAllSwitchVports(switchContext); | |
565 | goto cleanup; | |
566 | } | |
c803536e SS |
567 | |
568 | cleanup: | |
13165df9 NR |
569 | if (status != NDIS_STATUS_SUCCESS) { |
570 | switchContext->isActivated = TRUE; | |
571 | } | |
572 | ||
c803536e SS |
573 | OVS_LOG_TRACE("Exit: activate switch:%p, isActivated: %s, status = %lx", |
574 | switchContext, | |
575 | (switchContext->isActivated ? "TRUE" : "FALSE"), status); | |
576 | return status; | |
577 | } | |
578 | ||
c803536e SS |
579 | |
580 | /* | |
581 | * -------------------------------------------------------------------------- | |
582 | * Implements filter driver's FilterNetPnPEvent function. | |
583 | * -------------------------------------------------------------------------- | |
584 | */ | |
585 | NDIS_STATUS | |
586 | OvsExtNetPnPEvent(NDIS_HANDLE filterModuleContext, | |
587 | PNET_PNP_EVENT_NOTIFICATION netPnPEvent) | |
588 | { | |
589 | NDIS_STATUS status = NDIS_STATUS_SUCCESS; | |
590 | POVS_SWITCH_CONTEXT switchContext = (POVS_SWITCH_CONTEXT)filterModuleContext; | |
c803536e SS |
591 | |
592 | OVS_LOG_TRACE("Enter: filterModuleContext: %p, NetEvent: %d", | |
593 | filterModuleContext, (netPnPEvent->NetPnPEvent).NetEvent); | |
594 | /* | |
595 | * The only interesting event is the NetEventSwitchActivate. It provides | |
596 | * an asynchronous notification of the switch completing activation. | |
597 | */ | |
598 | if (netPnPEvent->NetPnPEvent.NetEvent == NetEventSwitchActivate) { | |
8834e5c2 AS |
599 | ASSERT(switchContext->isActivated == FALSE); |
600 | if (switchContext->isActivated == FALSE) { | |
601 | status = OvsActivateSwitch(switchContext); | |
602 | OVS_LOG_TRACE("OvsExtNetPnPEvent: activated switch: %p " | |
603 | "status: %s", switchContext, | |
604 | status ? "TRUE" : "FALSE"); | |
c803536e SS |
605 | } |
606 | } | |
607 | ||
8834e5c2 AS |
608 | status = NdisFNetPnPEvent(switchContext->NdisFilterHandle, |
609 | netPnPEvent); | |
c803536e SS |
610 | OVS_LOG_TRACE("Exit: OvsExtNetPnPEvent"); |
611 | ||
612 | return status; | |
613 | } |