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da1d0201 | 1 | /** @file\r |
3e7104c2 | 2 | Network library.\r |
3 | \r | |
ce4106be | 4 | Copyright (c) 2005 - 2009, Intel Corporation.<BR>\r |
da1d0201 | 5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
da1d0201 | 12 | **/\r |
13 | \r | |
3e7104c2 | 14 | #include <Uefi.h>\r |
da1d0201 | 15 | \r |
16 | #include <Protocol/ServiceBinding.h>\r | |
17 | #include <Protocol/SimpleNetwork.h>\r | |
63886849 | 18 | #include <Protocol/HiiConfigRouting.h>\r |
3012ce5c | 19 | #include <Protocol/ComponentName.h>\r |
20 | #include <Protocol/ComponentName2.h>\r | |
e1a590c3 | 21 | #include <Protocol/Dpc.h>\r |
da1d0201 | 22 | \r |
63886849 | 23 | #include <Guid/NicIp4ConfigNvData.h>\r |
24 | \r | |
da1d0201 | 25 | #include <Library/NetLib.h>\r |
26 | #include <Library/BaseLib.h>\r | |
27 | #include <Library/DebugLib.h>\r | |
28 | #include <Library/BaseMemoryLib.h>\r | |
29 | #include <Library/UefiBootServicesTableLib.h>\r | |
30 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
da1d0201 | 31 | #include <Library/MemoryAllocationLib.h>\r |
1232b214 | 32 | #include <Library/DevicePathLib.h>\r |
63886849 | 33 | #include <Library/HiiLib.h>\r |
34 | #include <Library/PrintLib.h>\r | |
da1d0201 | 35 | \r |
36ee91ca | 36 | EFI_DPC_PROTOCOL *mDpc = NULL;\r |
37 | \r | |
ac7e320c LG |
38 | GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mNetLibHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};\r |
39 | \r | |
ce4106be | 40 | #define NIC_ITEM_CONFIG_SIZE sizeof (NIC_IP4_CONFIG_INFO) + sizeof (EFI_IP4_ROUTE_TABLE) * MAX_IP4_CONFIG_IN_VARIABLE\r |
63886849 | 41 | \r |
da1d0201 | 42 | //\r |
43 | // All the supported IP4 maskes in host byte order.\r | |
44 | //\r | |
2a86ff1c | 45 | IP4_ADDR gIp4AllMasks[IP4_MASK_NUM] = {\r |
da1d0201 | 46 | 0x00000000,\r |
47 | 0x80000000,\r | |
48 | 0xC0000000,\r | |
49 | 0xE0000000,\r | |
50 | 0xF0000000,\r | |
51 | 0xF8000000,\r | |
52 | 0xFC000000,\r | |
53 | 0xFE000000,\r | |
54 | \r | |
55 | 0xFF000000,\r | |
56 | 0xFF800000,\r | |
57 | 0xFFC00000,\r | |
58 | 0xFFE00000,\r | |
59 | 0xFFF00000,\r | |
60 | 0xFFF80000,\r | |
61 | 0xFFFC0000,\r | |
62 | 0xFFFE0000,\r | |
63 | \r | |
64 | 0xFFFF0000,\r | |
65 | 0xFFFF8000,\r | |
66 | 0xFFFFC000,\r | |
67 | 0xFFFFE000,\r | |
68 | 0xFFFFF000,\r | |
69 | 0xFFFFF800,\r | |
70 | 0xFFFFFC00,\r | |
71 | 0xFFFFFE00,\r | |
72 | \r | |
73 | 0xFFFFFF00,\r | |
74 | 0xFFFFFF80,\r | |
75 | 0xFFFFFFC0,\r | |
76 | 0xFFFFFFE0,\r | |
77 | 0xFFFFFFF0,\r | |
78 | 0xFFFFFFF8,\r | |
79 | 0xFFFFFFFC,\r | |
80 | 0xFFFFFFFE,\r | |
81 | 0xFFFFFFFF,\r | |
82 | };\r | |
83 | \r | |
84 | EFI_IPv4_ADDRESS mZeroIp4Addr = {{0, 0, 0, 0}};\r | |
85 | \r | |
da1d0201 | 86 | /**\r |
b9008c87 | 87 | Return the length of the mask. \r |
88 | \r | |
89 | Return the length of the mask, the correct value is from 0 to 32.\r | |
90 | If the mask is invalid, return the invalid length 33, which is IP4_MASK_NUM.\r | |
da1d0201 | 91 | NetMask is in the host byte order.\r |
92 | \r | |
3e7104c2 | 93 | @param[in] NetMask The netmask to get the length from.\r |
da1d0201 | 94 | \r |
b9008c87 | 95 | @return The length of the netmask, IP4_MASK_NUM if the mask is invalid.\r |
3e7104c2 | 96 | \r |
da1d0201 | 97 | **/\r |
98 | INTN\r | |
7b414b4e | 99 | EFIAPI\r |
da1d0201 | 100 | NetGetMaskLength (\r |
101 | IN IP4_ADDR NetMask\r | |
102 | )\r | |
103 | {\r | |
104 | INTN Index;\r | |
105 | \r | |
106 | for (Index = 0; Index < IP4_MASK_NUM; Index++) {\r | |
2a86ff1c | 107 | if (NetMask == gIp4AllMasks[Index]) {\r |
da1d0201 | 108 | break;\r |
109 | }\r | |
110 | }\r | |
111 | \r | |
112 | return Index;\r | |
113 | }\r | |
114 | \r | |
115 | \r | |
116 | \r | |
117 | /**\r | |
b9008c87 | 118 | Return the class of the IP address, such as class A, B, C.\r |
da1d0201 | 119 | Addr is in host byte order.\r |
b9008c87 | 120 | \r |
121 | The address of class A starts with 0.\r | |
122 | If the address belong to class A, return IP4_ADDR_CLASSA.\r | |
123 | The address of class B starts with 10. \r | |
124 | If the address belong to class B, return IP4_ADDR_CLASSB.\r | |
125 | The address of class C starts with 110. \r | |
126 | If the address belong to class C, return IP4_ADDR_CLASSC.\r | |
127 | The address of class D starts with 1110. \r | |
128 | If the address belong to class D, return IP4_ADDR_CLASSD.\r | |
129 | The address of class E starts with 1111.\r | |
130 | If the address belong to class E, return IP4_ADDR_CLASSE.\r | |
da1d0201 | 131 | \r |
b9008c87 | 132 | \r |
3e7104c2 | 133 | @param[in] Addr The address to get the class from.\r |
da1d0201 | 134 | \r |
3e7104c2 | 135 | @return IP address class, such as IP4_ADDR_CLASSA.\r |
da1d0201 | 136 | \r |
137 | **/\r | |
138 | INTN\r | |
7b414b4e | 139 | EFIAPI\r |
da1d0201 | 140 | NetGetIpClass (\r |
141 | IN IP4_ADDR Addr\r | |
142 | )\r | |
143 | {\r | |
144 | UINT8 ByteOne;\r | |
145 | \r | |
146 | ByteOne = (UINT8) (Addr >> 24);\r | |
147 | \r | |
148 | if ((ByteOne & 0x80) == 0) {\r | |
149 | return IP4_ADDR_CLASSA;\r | |
150 | \r | |
151 | } else if ((ByteOne & 0xC0) == 0x80) {\r | |
152 | return IP4_ADDR_CLASSB;\r | |
153 | \r | |
154 | } else if ((ByteOne & 0xE0) == 0xC0) {\r | |
155 | return IP4_ADDR_CLASSC;\r | |
156 | \r | |
157 | } else if ((ByteOne & 0xF0) == 0xE0) {\r | |
158 | return IP4_ADDR_CLASSD;\r | |
159 | \r | |
160 | } else {\r | |
161 | return IP4_ADDR_CLASSE;\r | |
162 | \r | |
163 | }\r | |
164 | }\r | |
165 | \r | |
166 | \r | |
167 | /**\r | |
168 | Check whether the IP is a valid unicast address according to\r | |
b9008c87 | 169 | the netmask. If NetMask is zero, use the IP address's class to get the default mask.\r |
170 | \r | |
171 | If Ip is 0, IP is not a valid unicast address.\r | |
172 | Class D address is used for multicasting and class E address is reserved for future. If Ip\r | |
173 | belongs to class D or class E, IP is not a valid unicast address. \r | |
174 | If all bits of the host address of IP are 0 or 1, IP is also not a valid unicast address.\r | |
da1d0201 | 175 | \r |
3e7104c2 | 176 | @param[in] Ip The IP to check against.\r |
177 | @param[in] NetMask The mask of the IP.\r | |
da1d0201 | 178 | \r |
3e7104c2 | 179 | @return TRUE if IP is a valid unicast address on the network, otherwise FALSE.\r |
da1d0201 | 180 | \r |
181 | **/\r | |
182 | BOOLEAN\r | |
7b414b4e | 183 | EFIAPI\r |
da1d0201 | 184 | Ip4IsUnicast (\r |
185 | IN IP4_ADDR Ip,\r | |
186 | IN IP4_ADDR NetMask\r | |
187 | )\r | |
188 | {\r | |
189 | INTN Class;\r | |
190 | \r | |
191 | Class = NetGetIpClass (Ip);\r | |
192 | \r | |
193 | if ((Ip == 0) || (Class >= IP4_ADDR_CLASSD)) {\r | |
194 | return FALSE;\r | |
195 | }\r | |
196 | \r | |
197 | if (NetMask == 0) {\r | |
2a86ff1c | 198 | NetMask = gIp4AllMasks[Class << 3];\r |
da1d0201 | 199 | }\r |
200 | \r | |
201 | if (((Ip &~NetMask) == ~NetMask) || ((Ip &~NetMask) == 0)) {\r | |
202 | return FALSE;\r | |
203 | }\r | |
204 | \r | |
205 | return TRUE;\r | |
206 | }\r | |
207 | \r | |
208 | \r | |
209 | /**\r | |
210 | Initialize a random seed using current time.\r | |
b9008c87 | 211 | \r |
212 | Get current time first. Then initialize a random seed based on some basic \r | |
213 | mathematics operation on the hour, day, minute, second, nanosecond and year \r | |
214 | of the current time.\r | |
215 | \r | |
da1d0201 | 216 | @return The random seed initialized with current time.\r |
217 | \r | |
218 | **/\r | |
219 | UINT32\r | |
7b414b4e | 220 | EFIAPI\r |
da1d0201 | 221 | NetRandomInitSeed (\r |
222 | VOID\r | |
223 | )\r | |
224 | {\r | |
225 | EFI_TIME Time;\r | |
226 | UINT32 Seed;\r | |
227 | \r | |
228 | gRT->GetTime (&Time, NULL);\r | |
36ee91ca | 229 | Seed = (~Time.Hour << 24 | Time.Day << 16 | Time.Minute << 8 | Time.Second);\r |
da1d0201 | 230 | Seed ^= Time.Nanosecond;\r |
231 | Seed ^= Time.Year << 7;\r | |
232 | \r | |
233 | return Seed;\r | |
234 | }\r | |
235 | \r | |
236 | \r | |
237 | /**\r | |
b9008c87 | 238 | Extract a UINT32 from a byte stream.\r |
239 | \r | |
240 | Copy a UINT32 from a byte stream, then converts it from Network \r | |
241 | byte order to host byte order. Use this function to avoid alignment error.\r | |
da1d0201 | 242 | \r |
3e7104c2 | 243 | @param[in] Buf The buffer to extract the UINT32.\r |
da1d0201 | 244 | \r |
245 | @return The UINT32 extracted.\r | |
246 | \r | |
247 | **/\r | |
248 | UINT32\r | |
7b414b4e | 249 | EFIAPI\r |
da1d0201 | 250 | NetGetUint32 (\r |
251 | IN UINT8 *Buf\r | |
252 | )\r | |
253 | {\r | |
254 | UINT32 Value;\r | |
255 | \r | |
e48e37fc | 256 | CopyMem (&Value, Buf, sizeof (UINT32));\r |
da1d0201 | 257 | return NTOHL (Value);\r |
258 | }\r | |
259 | \r | |
260 | \r | |
261 | /**\r | |
b9008c87 | 262 | Put a UINT32 to the byte stream in network byte order. \r |
263 | \r | |
264 | Converts a UINT32 from host byte order to network byte order. Then copy it to the \r | |
265 | byte stream.\r | |
da1d0201 | 266 | \r |
3e7104c2 | 267 | @param[in, out] Buf The buffer to put the UINT32.\r |
268 | @param[in] Data The data to put.\r | |
269 | \r | |
da1d0201 | 270 | **/\r |
271 | VOID\r | |
7b414b4e | 272 | EFIAPI\r |
da1d0201 | 273 | NetPutUint32 (\r |
3e7104c2 | 274 | IN OUT UINT8 *Buf,\r |
275 | IN UINT32 Data\r | |
da1d0201 | 276 | )\r |
277 | {\r | |
278 | Data = HTONL (Data);\r | |
e48e37fc | 279 | CopyMem (Buf, &Data, sizeof (UINT32));\r |
da1d0201 | 280 | }\r |
281 | \r | |
282 | \r | |
283 | /**\r | |
b9008c87 | 284 | Remove the first node entry on the list, and return the removed node entry.\r |
285 | \r | |
286 | Removes the first node Entry from a doubly linked list. It is up to the caller of\r | |
287 | this function to release the memory used by the first node if that is required. On\r | |
288 | exit, the removed node is returned. \r | |
289 | \r | |
290 | If Head is NULL, then ASSERT().\r | |
291 | If Head was not initialized, then ASSERT().\r | |
292 | If PcdMaximumLinkedListLength is not zero, and the number of nodes in the\r | |
293 | linked list including the head node is greater than or equal to PcdMaximumLinkedListLength,\r | |
294 | then ASSERT(). \r | |
da1d0201 | 295 | \r |
3e7104c2 | 296 | @param[in, out] Head The list header.\r |
da1d0201 | 297 | \r |
b9008c87 | 298 | @return The first node entry that is removed from the list, NULL if the list is empty.\r |
da1d0201 | 299 | \r |
300 | **/\r | |
e48e37fc | 301 | LIST_ENTRY *\r |
7b414b4e | 302 | EFIAPI\r |
da1d0201 | 303 | NetListRemoveHead (\r |
3e7104c2 | 304 | IN OUT LIST_ENTRY *Head\r |
da1d0201 | 305 | )\r |
306 | {\r | |
e48e37fc | 307 | LIST_ENTRY *First;\r |
da1d0201 | 308 | \r |
309 | ASSERT (Head != NULL);\r | |
310 | \r | |
e48e37fc | 311 | if (IsListEmpty (Head)) {\r |
da1d0201 | 312 | return NULL;\r |
313 | }\r | |
314 | \r | |
315 | First = Head->ForwardLink;\r | |
316 | Head->ForwardLink = First->ForwardLink;\r | |
317 | First->ForwardLink->BackLink = Head;\r | |
318 | \r | |
319 | DEBUG_CODE (\r | |
e48e37fc | 320 | First->ForwardLink = (LIST_ENTRY *) NULL;\r |
321 | First->BackLink = (LIST_ENTRY *) NULL;\r | |
da1d0201 | 322 | );\r |
323 | \r | |
324 | return First;\r | |
325 | }\r | |
326 | \r | |
327 | \r | |
328 | /**\r | |
b9008c87 | 329 | Remove the last node entry on the list and and return the removed node entry.\r |
330 | \r | |
331 | Removes the last node entry from a doubly linked list. It is up to the caller of\r | |
332 | this function to release the memory used by the first node if that is required. On\r | |
333 | exit, the removed node is returned. \r | |
da1d0201 | 334 | \r |
b9008c87 | 335 | If Head is NULL, then ASSERT().\r |
336 | If Head was not initialized, then ASSERT().\r | |
337 | If PcdMaximumLinkedListLength is not zero, and the number of nodes in the\r | |
338 | linked list including the head node is greater than or equal to PcdMaximumLinkedListLength,\r | |
339 | then ASSERT(). \r | |
340 | \r | |
3e7104c2 | 341 | @param[in, out] Head The list head.\r |
da1d0201 | 342 | \r |
b9008c87 | 343 | @return The last node entry that is removed from the list, NULL if the list is empty.\r |
da1d0201 | 344 | \r |
345 | **/\r | |
e48e37fc | 346 | LIST_ENTRY *\r |
7b414b4e | 347 | EFIAPI\r |
da1d0201 | 348 | NetListRemoveTail (\r |
3e7104c2 | 349 | IN OUT LIST_ENTRY *Head\r |
da1d0201 | 350 | )\r |
351 | {\r | |
e48e37fc | 352 | LIST_ENTRY *Last;\r |
da1d0201 | 353 | \r |
354 | ASSERT (Head != NULL);\r | |
355 | \r | |
e48e37fc | 356 | if (IsListEmpty (Head)) {\r |
da1d0201 | 357 | return NULL;\r |
358 | }\r | |
359 | \r | |
360 | Last = Head->BackLink;\r | |
361 | Head->BackLink = Last->BackLink;\r | |
362 | Last->BackLink->ForwardLink = Head;\r | |
363 | \r | |
364 | DEBUG_CODE (\r | |
e48e37fc | 365 | Last->ForwardLink = (LIST_ENTRY *) NULL;\r |
366 | Last->BackLink = (LIST_ENTRY *) NULL;\r | |
da1d0201 | 367 | );\r |
368 | \r | |
369 | return Last;\r | |
370 | }\r | |
371 | \r | |
372 | \r | |
373 | /**\r | |
b9008c87 | 374 | Insert a new node entry after a designated node entry of a doubly linked list.\r |
375 | \r | |
376 | Inserts a new node entry donated by NewEntry after the node entry donated by PrevEntry\r | |
377 | of the doubly linked list.\r | |
378 | \r | |
3e7104c2 | 379 | @param[in, out] PrevEntry The previous entry to insert after.\r |
380 | @param[in, out] NewEntry The new entry to insert.\r | |
da1d0201 | 381 | \r |
382 | **/\r | |
383 | VOID\r | |
7b414b4e | 384 | EFIAPI\r |
da1d0201 | 385 | NetListInsertAfter (\r |
3e7104c2 | 386 | IN OUT LIST_ENTRY *PrevEntry,\r |
387 | IN OUT LIST_ENTRY *NewEntry\r | |
da1d0201 | 388 | )\r |
389 | {\r | |
390 | NewEntry->BackLink = PrevEntry;\r | |
391 | NewEntry->ForwardLink = PrevEntry->ForwardLink;\r | |
392 | PrevEntry->ForwardLink->BackLink = NewEntry;\r | |
393 | PrevEntry->ForwardLink = NewEntry;\r | |
394 | }\r | |
395 | \r | |
396 | \r | |
397 | /**\r | |
b9008c87 | 398 | Insert a new node entry before a designated node entry of a doubly linked list.\r |
399 | \r | |
400 | Inserts a new node entry donated by NewEntry after the node entry donated by PostEntry\r | |
401 | of the doubly linked list.\r | |
402 | \r | |
3e7104c2 | 403 | @param[in, out] PostEntry The entry to insert before.\r |
404 | @param[in, out] NewEntry The new entry to insert.\r | |
da1d0201 | 405 | \r |
406 | **/\r | |
407 | VOID\r | |
7b414b4e | 408 | EFIAPI\r |
da1d0201 | 409 | NetListInsertBefore (\r |
3e7104c2 | 410 | IN OUT LIST_ENTRY *PostEntry,\r |
411 | IN OUT LIST_ENTRY *NewEntry\r | |
da1d0201 | 412 | )\r |
413 | {\r | |
414 | NewEntry->ForwardLink = PostEntry;\r | |
415 | NewEntry->BackLink = PostEntry->BackLink;\r | |
416 | PostEntry->BackLink->ForwardLink = NewEntry;\r | |
417 | PostEntry->BackLink = NewEntry;\r | |
418 | }\r | |
419 | \r | |
420 | \r | |
421 | /**\r | |
422 | Initialize the netmap. Netmap is a reposity to keep the <Key, Value> pairs.\r | |
b9008c87 | 423 | \r |
424 | Initialize the forward and backward links of two head nodes donated by Map->Used \r | |
425 | and Map->Recycled of two doubly linked lists.\r | |
426 | Initializes the count of the <Key, Value> pairs in the netmap to zero.\r | |
427 | \r | |
428 | If Map is NULL, then ASSERT().\r | |
8f5e6151 | 429 | If the address of Map->Used is NULL, then ASSERT().\r |
b9008c87 | 430 | If the address of Map->Recycled is NULl, then ASSERT().\r |
431 | \r | |
3e7104c2 | 432 | @param[in, out] Map The netmap to initialize.\r |
da1d0201 | 433 | \r |
434 | **/\r | |
435 | VOID\r | |
7b414b4e | 436 | EFIAPI\r |
da1d0201 | 437 | NetMapInit (\r |
3e7104c2 | 438 | IN OUT NET_MAP *Map\r |
da1d0201 | 439 | )\r |
440 | {\r | |
441 | ASSERT (Map != NULL);\r | |
442 | \r | |
e48e37fc | 443 | InitializeListHead (&Map->Used);\r |
444 | InitializeListHead (&Map->Recycled);\r | |
da1d0201 | 445 | Map->Count = 0;\r |
446 | }\r | |
447 | \r | |
448 | \r | |
449 | /**\r | |
450 | To clean up the netmap, that is, release allocated memories.\r | |
b9008c87 | 451 | \r |
452 | Removes all nodes of the Used doubly linked list and free memory of all related netmap items.\r | |
453 | Removes all nodes of the Recycled doubly linked list and free memory of all related netmap items.\r | |
454 | The number of the <Key, Value> pairs in the netmap is set to be zero.\r | |
455 | \r | |
456 | If Map is NULL, then ASSERT().\r | |
457 | \r | |
3e7104c2 | 458 | @param[in, out] Map The netmap to clean up.\r |
da1d0201 | 459 | \r |
460 | **/\r | |
461 | VOID\r | |
7b414b4e | 462 | EFIAPI\r |
da1d0201 | 463 | NetMapClean (\r |
3e7104c2 | 464 | IN OUT NET_MAP *Map\r |
da1d0201 | 465 | )\r |
466 | {\r | |
467 | NET_MAP_ITEM *Item;\r | |
e48e37fc | 468 | LIST_ENTRY *Entry;\r |
469 | LIST_ENTRY *Next;\r | |
da1d0201 | 470 | \r |
471 | ASSERT (Map != NULL);\r | |
472 | \r | |
473 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Map->Used) {\r | |
474 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r | |
475 | \r | |
e48e37fc | 476 | RemoveEntryList (&Item->Link);\r |
da1d0201 | 477 | Map->Count--;\r |
478 | \r | |
e48e37fc | 479 | gBS->FreePool (Item);\r |
da1d0201 | 480 | }\r |
481 | \r | |
e48e37fc | 482 | ASSERT ((Map->Count == 0) && IsListEmpty (&Map->Used));\r |
da1d0201 | 483 | \r |
484 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Map->Recycled) {\r | |
485 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r | |
486 | \r | |
e48e37fc | 487 | RemoveEntryList (&Item->Link);\r |
488 | gBS->FreePool (Item);\r | |
da1d0201 | 489 | }\r |
490 | \r | |
e48e37fc | 491 | ASSERT (IsListEmpty (&Map->Recycled));\r |
da1d0201 | 492 | }\r |
493 | \r | |
494 | \r | |
495 | /**\r | |
b9008c87 | 496 | Test whether the netmap is empty and return true if it is.\r |
497 | \r | |
498 | If the number of the <Key, Value> pairs in the netmap is zero, return TRUE.\r | |
499 | \r | |
500 | If Map is NULL, then ASSERT().\r | |
501 | \r | |
502 | \r | |
3e7104c2 | 503 | @param[in] Map The net map to test.\r |
da1d0201 | 504 | \r |
505 | @return TRUE if the netmap is empty, otherwise FALSE.\r | |
506 | \r | |
507 | **/\r | |
508 | BOOLEAN\r | |
7b414b4e | 509 | EFIAPI\r |
da1d0201 | 510 | NetMapIsEmpty (\r |
511 | IN NET_MAP *Map\r | |
512 | )\r | |
513 | {\r | |
514 | ASSERT (Map != NULL);\r | |
515 | return (BOOLEAN) (Map->Count == 0);\r | |
516 | }\r | |
517 | \r | |
518 | \r | |
519 | /**\r | |
520 | Return the number of the <Key, Value> pairs in the netmap.\r | |
521 | \r | |
3e7104c2 | 522 | @param[in] Map The netmap to get the entry number.\r |
da1d0201 | 523 | \r |
524 | @return The entry number in the netmap.\r | |
525 | \r | |
526 | **/\r | |
527 | UINTN\r | |
7b414b4e | 528 | EFIAPI\r |
da1d0201 | 529 | NetMapGetCount (\r |
530 | IN NET_MAP *Map\r | |
531 | )\r | |
532 | {\r | |
533 | return Map->Count;\r | |
534 | }\r | |
535 | \r | |
536 | \r | |
537 | /**\r | |
b9008c87 | 538 | Return one allocated item. \r |
539 | \r | |
540 | If the Recycled doubly linked list of the netmap is empty, it will try to allocate \r | |
541 | a batch of items if there are enough resources and add corresponding nodes to the begining\r | |
542 | of the Recycled doubly linked list of the netmap. Otherwise, it will directly remove\r | |
543 | the fist node entry of the Recycled doubly linked list and return the corresponding item.\r | |
544 | \r | |
545 | If Map is NULL, then ASSERT().\r | |
546 | \r | |
3e7104c2 | 547 | @param[in, out] Map The netmap to allocate item for.\r |
da1d0201 | 548 | \r |
3e7104c2 | 549 | @return The allocated item. If NULL, the\r |
550 | allocation failed due to resource limit.\r | |
da1d0201 | 551 | \r |
552 | **/\r | |
da1d0201 | 553 | NET_MAP_ITEM *\r |
554 | NetMapAllocItem (\r | |
3e7104c2 | 555 | IN OUT NET_MAP *Map\r |
da1d0201 | 556 | )\r |
557 | {\r | |
558 | NET_MAP_ITEM *Item;\r | |
e48e37fc | 559 | LIST_ENTRY *Head;\r |
da1d0201 | 560 | UINTN Index;\r |
561 | \r | |
562 | ASSERT (Map != NULL);\r | |
563 | \r | |
564 | Head = &Map->Recycled;\r | |
565 | \r | |
e48e37fc | 566 | if (IsListEmpty (Head)) {\r |
da1d0201 | 567 | for (Index = 0; Index < NET_MAP_INCREAMENT; Index++) {\r |
e48e37fc | 568 | Item = AllocatePool (sizeof (NET_MAP_ITEM));\r |
da1d0201 | 569 | \r |
570 | if (Item == NULL) {\r | |
571 | if (Index == 0) {\r | |
572 | return NULL;\r | |
573 | }\r | |
574 | \r | |
575 | break;\r | |
576 | }\r | |
577 | \r | |
e48e37fc | 578 | InsertHeadList (Head, &Item->Link);\r |
da1d0201 | 579 | }\r |
580 | }\r | |
581 | \r | |
582 | Item = NET_LIST_HEAD (Head, NET_MAP_ITEM, Link);\r | |
583 | NetListRemoveHead (Head);\r | |
584 | \r | |
585 | return Item;\r | |
586 | }\r | |
587 | \r | |
588 | \r | |
589 | /**\r | |
590 | Allocate an item to save the <Key, Value> pair to the head of the netmap.\r | |
b9008c87 | 591 | \r |
592 | Allocate an item to save the <Key, Value> pair and add corresponding node entry\r | |
593 | to the beginning of the Used doubly linked list. The number of the <Key, Value> \r | |
594 | pairs in the netmap increase by 1.\r | |
da1d0201 | 595 | \r |
b9008c87 | 596 | If Map is NULL, then ASSERT().\r |
597 | \r | |
3e7104c2 | 598 | @param[in, out] Map The netmap to insert into.\r |
599 | @param[in] Key The user's key.\r | |
600 | @param[in] Value The user's value for the key.\r | |
da1d0201 | 601 | \r |
3e7104c2 | 602 | @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item.\r |
603 | @retval EFI_SUCCESS The item is inserted to the head.\r | |
da1d0201 | 604 | \r |
605 | **/\r | |
606 | EFI_STATUS\r | |
7b414b4e | 607 | EFIAPI\r |
da1d0201 | 608 | NetMapInsertHead (\r |
3e7104c2 | 609 | IN OUT NET_MAP *Map,\r |
da1d0201 | 610 | IN VOID *Key,\r |
611 | IN VOID *Value OPTIONAL\r | |
612 | )\r | |
613 | {\r | |
614 | NET_MAP_ITEM *Item;\r | |
615 | \r | |
616 | ASSERT (Map != NULL);\r | |
617 | \r | |
618 | Item = NetMapAllocItem (Map);\r | |
619 | \r | |
620 | if (Item == NULL) {\r | |
621 | return EFI_OUT_OF_RESOURCES;\r | |
622 | }\r | |
623 | \r | |
624 | Item->Key = Key;\r | |
625 | Item->Value = Value;\r | |
e48e37fc | 626 | InsertHeadList (&Map->Used, &Item->Link);\r |
da1d0201 | 627 | \r |
628 | Map->Count++;\r | |
629 | return EFI_SUCCESS;\r | |
630 | }\r | |
631 | \r | |
632 | \r | |
633 | /**\r | |
634 | Allocate an item to save the <Key, Value> pair to the tail of the netmap.\r | |
635 | \r | |
b9008c87 | 636 | Allocate an item to save the <Key, Value> pair and add corresponding node entry\r |
637 | to the tail of the Used doubly linked list. The number of the <Key, Value> \r | |
638 | pairs in the netmap increase by 1.\r | |
639 | \r | |
640 | If Map is NULL, then ASSERT().\r | |
641 | \r | |
3e7104c2 | 642 | @param[in, out] Map The netmap to insert into.\r |
643 | @param[in] Key The user's key.\r | |
644 | @param[in] Value The user's value for the key.\r | |
da1d0201 | 645 | \r |
3e7104c2 | 646 | @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item.\r |
647 | @retval EFI_SUCCESS The item is inserted to the tail.\r | |
da1d0201 | 648 | \r |
649 | **/\r | |
650 | EFI_STATUS\r | |
7b414b4e | 651 | EFIAPI\r |
da1d0201 | 652 | NetMapInsertTail (\r |
3e7104c2 | 653 | IN OUT NET_MAP *Map,\r |
da1d0201 | 654 | IN VOID *Key,\r |
655 | IN VOID *Value OPTIONAL\r | |
656 | )\r | |
657 | {\r | |
658 | NET_MAP_ITEM *Item;\r | |
659 | \r | |
660 | ASSERT (Map != NULL);\r | |
661 | \r | |
662 | Item = NetMapAllocItem (Map);\r | |
663 | \r | |
664 | if (Item == NULL) {\r | |
665 | return EFI_OUT_OF_RESOURCES;\r | |
666 | }\r | |
667 | \r | |
668 | Item->Key = Key;\r | |
669 | Item->Value = Value;\r | |
e48e37fc | 670 | InsertTailList (&Map->Used, &Item->Link);\r |
da1d0201 | 671 | \r |
672 | Map->Count++;\r | |
673 | \r | |
674 | return EFI_SUCCESS;\r | |
675 | }\r | |
676 | \r | |
677 | \r | |
678 | /**\r | |
b9008c87 | 679 | Check whether the item is in the Map and return TRUE if it is.\r |
da1d0201 | 680 | \r |
3e7104c2 | 681 | @param[in] Map The netmap to search within.\r |
682 | @param[in] Item The item to search.\r | |
da1d0201 | 683 | \r |
684 | @return TRUE if the item is in the netmap, otherwise FALSE.\r | |
685 | \r | |
686 | **/\r | |
da1d0201 | 687 | BOOLEAN\r |
688 | NetItemInMap (\r | |
689 | IN NET_MAP *Map,\r | |
690 | IN NET_MAP_ITEM *Item\r | |
691 | )\r | |
692 | {\r | |
e48e37fc | 693 | LIST_ENTRY *ListEntry;\r |
da1d0201 | 694 | \r |
695 | NET_LIST_FOR_EACH (ListEntry, &Map->Used) {\r | |
696 | if (ListEntry == &Item->Link) {\r | |
697 | return TRUE;\r | |
698 | }\r | |
699 | }\r | |
700 | \r | |
701 | return FALSE;\r | |
702 | }\r | |
703 | \r | |
704 | \r | |
705 | /**\r | |
b9008c87 | 706 | Find the key in the netmap and returns the point to the item contains the Key.\r |
707 | \r | |
708 | Iterate the Used doubly linked list of the netmap to get every item. Compare the key of every \r | |
709 | item with the key to search. It returns the point to the item contains the Key if found.\r | |
da1d0201 | 710 | \r |
b9008c87 | 711 | If Map is NULL, then ASSERT().\r |
712 | \r | |
3e7104c2 | 713 | @param[in] Map The netmap to search within.\r |
714 | @param[in] Key The key to search.\r | |
da1d0201 | 715 | \r |
716 | @return The point to the item contains the Key, or NULL if Key isn't in the map.\r | |
717 | \r | |
718 | **/\r | |
719 | NET_MAP_ITEM *\r | |
7b414b4e | 720 | EFIAPI\r |
da1d0201 | 721 | NetMapFindKey (\r |
722 | IN NET_MAP *Map,\r | |
723 | IN VOID *Key\r | |
724 | )\r | |
725 | {\r | |
e48e37fc | 726 | LIST_ENTRY *Entry;\r |
da1d0201 | 727 | NET_MAP_ITEM *Item;\r |
728 | \r | |
729 | ASSERT (Map != NULL);\r | |
730 | \r | |
731 | NET_LIST_FOR_EACH (Entry, &Map->Used) {\r | |
732 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r | |
733 | \r | |
734 | if (Item->Key == Key) {\r | |
735 | return Item;\r | |
736 | }\r | |
737 | }\r | |
738 | \r | |
739 | return NULL;\r | |
740 | }\r | |
741 | \r | |
742 | \r | |
743 | /**\r | |
b9008c87 | 744 | Remove the node entry of the item from the netmap and return the key of the removed item.\r |
745 | \r | |
746 | Remove the node entry of the item from the Used doubly linked list of the netmap. \r | |
747 | The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node \r | |
748 | entry of the item to the Recycled doubly linked list of the netmap. If Value is not NULL,\r | |
749 | Value will point to the value of the item. It returns the key of the removed item.\r | |
750 | \r | |
751 | If Map is NULL, then ASSERT().\r | |
752 | If Item is NULL, then ASSERT().\r | |
753 | if item in not in the netmap, then ASSERT().\r | |
754 | \r | |
3e7104c2 | 755 | @param[in, out] Map The netmap to remove the item from.\r |
756 | @param[in, out] Item The item to remove.\r | |
757 | @param[out] Value The variable to receive the value if not NULL.\r | |
da1d0201 | 758 | \r |
3e7104c2 | 759 | @return The key of the removed item.\r |
da1d0201 | 760 | \r |
761 | **/\r | |
762 | VOID *\r | |
7b414b4e | 763 | EFIAPI\r |
da1d0201 | 764 | NetMapRemoveItem (\r |
3e7104c2 | 765 | IN OUT NET_MAP *Map,\r |
766 | IN OUT NET_MAP_ITEM *Item,\r | |
767 | OUT VOID **Value OPTIONAL\r | |
da1d0201 | 768 | )\r |
769 | {\r | |
770 | ASSERT ((Map != NULL) && (Item != NULL));\r | |
771 | ASSERT (NetItemInMap (Map, Item));\r | |
772 | \r | |
e48e37fc | 773 | RemoveEntryList (&Item->Link);\r |
da1d0201 | 774 | Map->Count--;\r |
e48e37fc | 775 | InsertHeadList (&Map->Recycled, &Item->Link);\r |
da1d0201 | 776 | \r |
777 | if (Value != NULL) {\r | |
778 | *Value = Item->Value;\r | |
779 | }\r | |
780 | \r | |
781 | return Item->Key;\r | |
782 | }\r | |
783 | \r | |
784 | \r | |
785 | /**\r | |
b9008c87 | 786 | Remove the first node entry on the netmap and return the key of the removed item.\r |
da1d0201 | 787 | \r |
b9008c87 | 788 | Remove the first node entry from the Used doubly linked list of the netmap. \r |
789 | The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node \r | |
790 | entry to the Recycled doubly linked list of the netmap. If parameter Value is not NULL,\r | |
791 | parameter Value will point to the value of the item. It returns the key of the removed item.\r | |
792 | \r | |
793 | If Map is NULL, then ASSERT().\r | |
794 | If the Used doubly linked list is empty, then ASSERT().\r | |
795 | \r | |
3e7104c2 | 796 | @param[in, out] Map The netmap to remove the head from.\r |
797 | @param[out] Value The variable to receive the value if not NULL.\r | |
da1d0201 | 798 | \r |
3e7104c2 | 799 | @return The key of the item removed.\r |
da1d0201 | 800 | \r |
801 | **/\r | |
802 | VOID *\r | |
7b414b4e | 803 | EFIAPI\r |
da1d0201 | 804 | NetMapRemoveHead (\r |
3e7104c2 | 805 | IN OUT NET_MAP *Map,\r |
da1d0201 | 806 | OUT VOID **Value OPTIONAL\r |
807 | )\r | |
808 | {\r | |
809 | NET_MAP_ITEM *Item;\r | |
810 | \r | |
811 | //\r | |
812 | // Often, it indicates a programming error to remove\r | |
813 | // the first entry in an empty list\r | |
814 | //\r | |
e48e37fc | 815 | ASSERT (Map && !IsListEmpty (&Map->Used));\r |
da1d0201 | 816 | \r |
817 | Item = NET_LIST_HEAD (&Map->Used, NET_MAP_ITEM, Link);\r | |
e48e37fc | 818 | RemoveEntryList (&Item->Link);\r |
da1d0201 | 819 | Map->Count--;\r |
e48e37fc | 820 | InsertHeadList (&Map->Recycled, &Item->Link);\r |
da1d0201 | 821 | \r |
822 | if (Value != NULL) {\r | |
823 | *Value = Item->Value;\r | |
824 | }\r | |
825 | \r | |
826 | return Item->Key;\r | |
827 | }\r | |
828 | \r | |
829 | \r | |
830 | /**\r | |
b9008c87 | 831 | Remove the last node entry on the netmap and return the key of the removed item.\r |
da1d0201 | 832 | \r |
b9008c87 | 833 | Remove the last node entry from the Used doubly linked list of the netmap. \r |
834 | The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node \r | |
835 | entry to the Recycled doubly linked list of the netmap. If parameter Value is not NULL,\r | |
836 | parameter Value will point to the value of the item. It returns the key of the removed item.\r | |
837 | \r | |
838 | If Map is NULL, then ASSERT().\r | |
839 | If the Used doubly linked list is empty, then ASSERT().\r | |
840 | \r | |
3e7104c2 | 841 | @param[in, out] Map The netmap to remove the tail from.\r |
842 | @param[out] Value The variable to receive the value if not NULL.\r | |
da1d0201 | 843 | \r |
3e7104c2 | 844 | @return The key of the item removed.\r |
da1d0201 | 845 | \r |
846 | **/\r | |
847 | VOID *\r | |
7b414b4e | 848 | EFIAPI\r |
da1d0201 | 849 | NetMapRemoveTail (\r |
3e7104c2 | 850 | IN OUT NET_MAP *Map,\r |
da1d0201 | 851 | OUT VOID **Value OPTIONAL\r |
852 | )\r | |
853 | {\r | |
854 | NET_MAP_ITEM *Item;\r | |
855 | \r | |
856 | //\r | |
857 | // Often, it indicates a programming error to remove\r | |
858 | // the last entry in an empty list\r | |
859 | //\r | |
e48e37fc | 860 | ASSERT (Map && !IsListEmpty (&Map->Used));\r |
da1d0201 | 861 | \r |
862 | Item = NET_LIST_TAIL (&Map->Used, NET_MAP_ITEM, Link);\r | |
e48e37fc | 863 | RemoveEntryList (&Item->Link);\r |
da1d0201 | 864 | Map->Count--;\r |
e48e37fc | 865 | InsertHeadList (&Map->Recycled, &Item->Link);\r |
da1d0201 | 866 | \r |
867 | if (Value != NULL) {\r | |
868 | *Value = Item->Value;\r | |
869 | }\r | |
870 | \r | |
871 | return Item->Key;\r | |
872 | }\r | |
873 | \r | |
874 | \r | |
875 | /**\r | |
b9008c87 | 876 | Iterate through the netmap and call CallBack for each item.\r |
877 | \r | |
878 | It will contiue the traverse if CallBack returns EFI_SUCCESS, otherwise, break\r | |
879 | from the loop. It returns the CallBack's last return value. This function is \r | |
880 | delete safe for the current item.\r | |
da1d0201 | 881 | \r |
b9008c87 | 882 | If Map is NULL, then ASSERT().\r |
883 | If CallBack is NULL, then ASSERT().\r | |
884 | \r | |
3e7104c2 | 885 | @param[in] Map The Map to iterate through.\r |
886 | @param[in] CallBack The callback function to call for each item.\r | |
887 | @param[in] Arg The opaque parameter to the callback.\r | |
da1d0201 | 888 | \r |
3e7104c2 | 889 | @retval EFI_SUCCESS There is no item in the netmap or CallBack for each item\r |
890 | return EFI_SUCCESS.\r | |
891 | @retval Others It returns the CallBack's last return value.\r | |
da1d0201 | 892 | \r |
893 | **/\r | |
894 | EFI_STATUS\r | |
7b414b4e | 895 | EFIAPI\r |
da1d0201 | 896 | NetMapIterate (\r |
897 | IN NET_MAP *Map,\r | |
898 | IN NET_MAP_CALLBACK CallBack,\r | |
899 | IN VOID *Arg\r | |
900 | )\r | |
901 | {\r | |
902 | \r | |
e48e37fc | 903 | LIST_ENTRY *Entry;\r |
904 | LIST_ENTRY *Next;\r | |
905 | LIST_ENTRY *Head;\r | |
b9008c87 | 906 | NET_MAP_ITEM *Item;\r |
907 | EFI_STATUS Result;\r | |
da1d0201 | 908 | \r |
909 | ASSERT ((Map != NULL) && (CallBack != NULL));\r | |
910 | \r | |
911 | Head = &Map->Used;\r | |
912 | \r | |
e48e37fc | 913 | if (IsListEmpty (Head)) {\r |
da1d0201 | 914 | return EFI_SUCCESS;\r |
915 | }\r | |
916 | \r | |
917 | NET_LIST_FOR_EACH_SAFE (Entry, Next, Head) {\r | |
918 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r | |
919 | Result = CallBack (Map, Item, Arg);\r | |
920 | \r | |
921 | if (EFI_ERROR (Result)) {\r | |
922 | return Result;\r | |
923 | }\r | |
924 | }\r | |
925 | \r | |
926 | return EFI_SUCCESS;\r | |
927 | }\r | |
928 | \r | |
929 | \r | |
930 | /**\r | |
931 | This is the default unload handle for all the network drivers.\r | |
932 | \r | |
b9008c87 | 933 | Disconnect the driver specified by ImageHandle from all the devices in the handle database.\r |
934 | Uninstall all the protocols installed in the driver entry point.\r | |
935 | \r | |
3e7104c2 | 936 | @param[in] ImageHandle The drivers' driver image.\r |
da1d0201 | 937 | \r |
938 | @retval EFI_SUCCESS The image is unloaded.\r | |
939 | @retval Others Failed to unload the image.\r | |
940 | \r | |
941 | **/\r | |
942 | EFI_STATUS\r | |
943 | EFIAPI\r | |
944 | NetLibDefaultUnload (\r | |
945 | IN EFI_HANDLE ImageHandle\r | |
946 | )\r | |
947 | {\r | |
948 | EFI_STATUS Status;\r | |
949 | EFI_HANDLE *DeviceHandleBuffer;\r | |
950 | UINTN DeviceHandleCount;\r | |
951 | UINTN Index;\r | |
952 | EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;\r | |
953 | EFI_COMPONENT_NAME_PROTOCOL *ComponentName;\r | |
3012ce5c | 954 | EFI_COMPONENT_NAME2_PROTOCOL *ComponentName2;\r |
da1d0201 | 955 | \r |
956 | //\r | |
957 | // Get the list of all the handles in the handle database.\r | |
958 | // If there is an error getting the list, then the unload\r | |
959 | // operation fails.\r | |
960 | //\r | |
961 | Status = gBS->LocateHandleBuffer (\r | |
962 | AllHandles,\r | |
963 | NULL,\r | |
964 | NULL,\r | |
965 | &DeviceHandleCount,\r | |
966 | &DeviceHandleBuffer\r | |
967 | );\r | |
968 | \r | |
969 | if (EFI_ERROR (Status)) {\r | |
970 | return Status;\r | |
971 | }\r | |
972 | \r | |
973 | //\r | |
974 | // Disconnect the driver specified by ImageHandle from all\r | |
975 | // the devices in the handle database.\r | |
976 | //\r | |
977 | for (Index = 0; Index < DeviceHandleCount; Index++) {\r | |
978 | Status = gBS->DisconnectController (\r | |
979 | DeviceHandleBuffer[Index],\r | |
980 | ImageHandle,\r | |
981 | NULL\r | |
982 | );\r | |
983 | }\r | |
984 | \r | |
985 | //\r | |
986 | // Uninstall all the protocols installed in the driver entry point\r | |
987 | //\r | |
988 | for (Index = 0; Index < DeviceHandleCount; Index++) {\r | |
989 | Status = gBS->HandleProtocol (\r | |
990 | DeviceHandleBuffer[Index],\r | |
991 | &gEfiDriverBindingProtocolGuid,\r | |
992 | (VOID **) &DriverBinding\r | |
993 | );\r | |
994 | \r | |
995 | if (EFI_ERROR (Status)) {\r | |
996 | continue;\r | |
997 | }\r | |
998 | \r | |
999 | if (DriverBinding->ImageHandle != ImageHandle) {\r | |
1000 | continue;\r | |
1001 | }\r | |
1002 | \r | |
1003 | gBS->UninstallProtocolInterface (\r | |
1004 | ImageHandle,\r | |
1005 | &gEfiDriverBindingProtocolGuid,\r | |
1006 | DriverBinding\r | |
1007 | );\r | |
1008 | Status = gBS->HandleProtocol (\r | |
1009 | DeviceHandleBuffer[Index],\r | |
1010 | &gEfiComponentNameProtocolGuid,\r | |
1011 | (VOID **) &ComponentName\r | |
1012 | );\r | |
1013 | if (!EFI_ERROR (Status)) {\r | |
1014 | gBS->UninstallProtocolInterface (\r | |
1015 | ImageHandle,\r | |
1016 | &gEfiComponentNameProtocolGuid,\r | |
1017 | ComponentName\r | |
1018 | );\r | |
1019 | }\r | |
1020 | \r | |
1021 | Status = gBS->HandleProtocol (\r | |
1022 | DeviceHandleBuffer[Index],\r | |
3012ce5c | 1023 | &gEfiComponentName2ProtocolGuid,\r |
1024 | (VOID **) &ComponentName2\r | |
da1d0201 | 1025 | );\r |
da1d0201 | 1026 | if (!EFI_ERROR (Status)) {\r |
1027 | gBS->UninstallProtocolInterface (\r | |
3012ce5c | 1028 | ImageHandle,\r |
1029 | &gEfiComponentName2ProtocolGuid,\r | |
1030 | ComponentName2\r | |
1031 | );\r | |
da1d0201 | 1032 | }\r |
1033 | }\r | |
1034 | \r | |
1035 | //\r | |
1036 | // Free the buffer containing the list of handles from the handle database\r | |
1037 | //\r | |
1038 | if (DeviceHandleBuffer != NULL) {\r | |
1039 | gBS->FreePool (DeviceHandleBuffer);\r | |
1040 | }\r | |
1041 | \r | |
1042 | return EFI_SUCCESS;\r | |
1043 | }\r | |
1044 | \r | |
1045 | \r | |
1046 | \r | |
1047 | /**\r | |
1048 | Create a child of the service that is identified by ServiceBindingGuid.\r | |
b9008c87 | 1049 | \r |
1050 | Get the ServiceBinding Protocol first, then use it to create a child.\r | |
da1d0201 | 1051 | \r |
b9008c87 | 1052 | If ServiceBindingGuid is NULL, then ASSERT().\r |
1053 | If ChildHandle is NULL, then ASSERT().\r | |
1054 | \r | |
3e7104c2 | 1055 | @param[in] Controller The controller which has the service installed.\r |
1056 | @param[in] Image The image handle used to open service.\r | |
1057 | @param[in] ServiceBindingGuid The service's Guid.\r | |
8f5e6151 | 1058 | @param[in, out] ChildHandle The handle to receive the create child.\r |
da1d0201 | 1059 | \r |
1060 | @retval EFI_SUCCESS The child is successfully created.\r | |
1061 | @retval Others Failed to create the child.\r | |
1062 | \r | |
1063 | **/\r | |
1064 | EFI_STATUS\r | |
7b414b4e | 1065 | EFIAPI\r |
da1d0201 | 1066 | NetLibCreateServiceChild (\r |
1067 | IN EFI_HANDLE Controller,\r | |
1068 | IN EFI_HANDLE Image,\r | |
1069 | IN EFI_GUID *ServiceBindingGuid,\r | |
3e7104c2 | 1070 | IN OUT EFI_HANDLE *ChildHandle\r |
da1d0201 | 1071 | )\r |
1072 | {\r | |
1073 | EFI_STATUS Status;\r | |
1074 | EFI_SERVICE_BINDING_PROTOCOL *Service;\r | |
1075 | \r | |
1076 | \r | |
1077 | ASSERT ((ServiceBindingGuid != NULL) && (ChildHandle != NULL));\r | |
1078 | \r | |
1079 | //\r | |
1080 | // Get the ServiceBinding Protocol\r | |
1081 | //\r | |
1082 | Status = gBS->OpenProtocol (\r | |
1083 | Controller,\r | |
1084 | ServiceBindingGuid,\r | |
1085 | (VOID **) &Service,\r | |
1086 | Image,\r | |
1087 | Controller,\r | |
1088 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
1089 | );\r | |
1090 | \r | |
1091 | if (EFI_ERROR (Status)) {\r | |
1092 | return Status;\r | |
1093 | }\r | |
1094 | \r | |
1095 | //\r | |
1096 | // Create a child\r | |
1097 | //\r | |
1098 | Status = Service->CreateChild (Service, ChildHandle);\r | |
1099 | return Status;\r | |
1100 | }\r | |
1101 | \r | |
1102 | \r | |
1103 | /**\r | |
1104 | Destory a child of the service that is identified by ServiceBindingGuid.\r | |
b9008c87 | 1105 | \r |
1106 | Get the ServiceBinding Protocol first, then use it to destroy a child.\r | |
1107 | \r | |
1108 | If ServiceBindingGuid is NULL, then ASSERT().\r | |
1109 | \r | |
3e7104c2 | 1110 | @param[in] Controller The controller which has the service installed.\r |
1111 | @param[in] Image The image handle used to open service.\r | |
1112 | @param[in] ServiceBindingGuid The service's Guid.\r | |
8f5e6151 | 1113 | @param[in] ChildHandle The child to destory.\r |
da1d0201 | 1114 | \r |
1115 | @retval EFI_SUCCESS The child is successfully destoried.\r | |
1116 | @retval Others Failed to destory the child.\r | |
1117 | \r | |
1118 | **/\r | |
1119 | EFI_STATUS\r | |
7b414b4e | 1120 | EFIAPI\r |
da1d0201 | 1121 | NetLibDestroyServiceChild (\r |
1122 | IN EFI_HANDLE Controller,\r | |
1123 | IN EFI_HANDLE Image,\r | |
1124 | IN EFI_GUID *ServiceBindingGuid,\r | |
1125 | IN EFI_HANDLE ChildHandle\r | |
1126 | )\r | |
1127 | {\r | |
1128 | EFI_STATUS Status;\r | |
1129 | EFI_SERVICE_BINDING_PROTOCOL *Service;\r | |
1130 | \r | |
1131 | ASSERT (ServiceBindingGuid != NULL);\r | |
1132 | \r | |
1133 | //\r | |
1134 | // Get the ServiceBinding Protocol\r | |
1135 | //\r | |
1136 | Status = gBS->OpenProtocol (\r | |
1137 | Controller,\r | |
1138 | ServiceBindingGuid,\r | |
1139 | (VOID **) &Service,\r | |
1140 | Image,\r | |
1141 | Controller,\r | |
1142 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
1143 | );\r | |
1144 | \r | |
1145 | if (EFI_ERROR (Status)) {\r | |
1146 | return Status;\r | |
1147 | }\r | |
1148 | \r | |
1149 | //\r | |
1150 | // destory the child\r | |
1151 | //\r | |
1152 | Status = Service->DestroyChild (Service, ChildHandle);\r | |
1153 | return Status;\r | |
1154 | }\r | |
1155 | \r | |
1156 | \r | |
1157 | /**\r | |
1158 | Convert the mac address of the simple network protocol installed on\r | |
1159 | SnpHandle to a unicode string. Callers are responsible for freeing the\r | |
1160 | string storage.\r | |
1161 | \r | |
b9008c87 | 1162 | Get the mac address of the Simple Network protocol from the SnpHandle. Then convert\r |
1163 | the mac address into a unicode string. It takes 2 unicode characters to represent \r | |
1164 | a 1 byte binary buffer. Plus one unicode character for the null-terminator.\r | |
1165 | \r | |
1166 | \r | |
3e7104c2 | 1167 | @param[in] SnpHandle The handle where the simple network protocol is\r |
1168 | installed on.\r | |
1169 | @param[in] ImageHandle The image handle used to act as the agent handle to\r | |
1170 | get the simple network protocol.\r | |
1171 | @param[out] MacString The pointer to store the address of the string\r | |
1172 | representation of the mac address.\r | |
1173 | \r | |
1174 | @retval EFI_SUCCESS Convert the mac address a unicode string successfully.\r | |
da1d0201 | 1175 | @retval EFI_OUT_OF_RESOURCES There are not enough memory resource.\r |
3e7104c2 | 1176 | @retval Others Failed to open the simple network protocol.\r |
da1d0201 | 1177 | \r |
1178 | **/\r | |
1179 | EFI_STATUS\r | |
7b414b4e | 1180 | EFIAPI\r |
da1d0201 | 1181 | NetLibGetMacString (\r |
3e7104c2 | 1182 | IN EFI_HANDLE SnpHandle,\r |
1183 | IN EFI_HANDLE ImageHandle,\r | |
1184 | OUT CHAR16 **MacString\r | |
da1d0201 | 1185 | )\r |
1186 | {\r | |
1187 | EFI_STATUS Status;\r | |
1188 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
1189 | EFI_SIMPLE_NETWORK_MODE *Mode;\r | |
1190 | CHAR16 *MacAddress;\r | |
1191 | UINTN Index;\r | |
1192 | \r | |
1193 | *MacString = NULL;\r | |
1194 | \r | |
1195 | //\r | |
1196 | // Get the Simple Network protocol from the SnpHandle.\r | |
1197 | //\r | |
1198 | Status = gBS->OpenProtocol (\r | |
1199 | SnpHandle,\r | |
1200 | &gEfiSimpleNetworkProtocolGuid,\r | |
1201 | (VOID **) &Snp,\r | |
1202 | ImageHandle,\r | |
1203 | SnpHandle,\r | |
1204 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
1205 | );\r | |
1206 | if (EFI_ERROR (Status)) {\r | |
1207 | return Status;\r | |
1208 | }\r | |
1209 | \r | |
1210 | Mode = Snp->Mode;\r | |
1211 | \r | |
1212 | //\r | |
1213 | // It takes 2 unicode characters to represent a 1 byte binary buffer.\r | |
1214 | // Plus one unicode character for the null-terminator.\r | |
1215 | //\r | |
e48e37fc | 1216 | MacAddress = AllocatePool ((2 * Mode->HwAddressSize + 1) * sizeof (CHAR16));\r |
da1d0201 | 1217 | if (MacAddress == NULL) {\r |
1218 | return EFI_OUT_OF_RESOURCES;\r | |
1219 | }\r | |
1220 | \r | |
1221 | //\r | |
1222 | // Convert the mac address into a unicode string.\r | |
1223 | //\r | |
1224 | for (Index = 0; Index < Mode->HwAddressSize; Index++) {\r | |
ac7e320c LG |
1225 | MacAddress[Index * 2] = (CHAR16) mNetLibHexStr[(Mode->CurrentAddress.Addr[Index] >> 4) & 0x0F];\r |
1226 | MacAddress[Index * 2 + 1] = (CHAR16) mNetLibHexStr[Mode->CurrentAddress.Addr[Index] & 0x0F];\r | |
da1d0201 | 1227 | }\r |
1228 | \r | |
1229 | MacAddress[Mode->HwAddressSize * 2] = L'\0';\r | |
1230 | \r | |
1231 | *MacString = MacAddress;\r | |
1232 | \r | |
1233 | return EFI_SUCCESS;\r | |
1234 | }\r | |
1235 | \r | |
1236 | /**\r | |
1237 | Check the default address used by the IPv4 driver is static or dynamic (acquired\r | |
1238 | from DHCP).\r | |
1239 | \r | |
b9008c87 | 1240 | If the controller handle does not have the NIC Ip4 Config Protocol installed, the \r |
1241 | default address is static. If the EFI variable to save the configuration is not found,\r | |
1242 | the default address is static. Otherwise, get the result from the EFI variable which \r | |
1243 | saving the configuration.\r | |
1244 | \r | |
3e7104c2 | 1245 | @param[in] Controller The controller handle which has the NIC Ip4 Config Protocol\r |
1246 | relative with the default address to judge.\r | |
da1d0201 | 1247 | \r |
1248 | @retval TRUE If the default address is static.\r | |
1249 | @retval FALSE If the default address is acquired from DHCP.\r | |
1250 | \r | |
1251 | **/\r | |
da1d0201 | 1252 | BOOLEAN\r |
1253 | NetLibDefaultAddressIsStatic (\r | |
1254 | IN EFI_HANDLE Controller\r | |
1255 | )\r | |
1256 | {\r | |
63886849 | 1257 | EFI_STATUS Status;\r |
1258 | EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;\r | |
1259 | UINTN Len;\r | |
1260 | NIC_IP4_CONFIG_INFO *ConfigInfo;\r | |
1261 | BOOLEAN IsStatic;\r | |
1262 | EFI_STRING ConfigHdr;\r | |
1263 | EFI_STRING ConfigResp;\r | |
1264 | EFI_STRING AccessProgress;\r | |
1265 | EFI_STRING AccessResults;\r | |
1266 | EFI_STRING String;\r | |
1267 | \r | |
1268 | ConfigInfo = NULL;\r | |
1269 | ConfigHdr = NULL;\r | |
1270 | ConfigResp = NULL;\r | |
1271 | AccessProgress = NULL;\r | |
1272 | AccessResults = NULL;\r | |
1273 | IsStatic = TRUE;\r | |
1274 | \r | |
1275 | Status = gBS->LocateProtocol (\r | |
1276 | &gEfiHiiConfigRoutingProtocolGuid,\r | |
1277 | NULL,\r | |
1278 | (VOID **) &HiiConfigRouting\r | |
1279 | );\r | |
da1d0201 | 1280 | if (EFI_ERROR (Status)) {\r |
1281 | return TRUE;\r | |
1282 | }\r | |
1283 | \r | |
63886849 | 1284 | //\r |
1285 | // Construct config request string header\r | |
1286 | //\r | |
1287 | ConfigHdr = HiiConstructConfigHdr (&gEfiNicIp4ConfigVariableGuid, EFI_NIC_IP4_CONFIG_VARIABLE, Controller);\r | |
1288 | \r | |
1289 | Len = StrLen (ConfigHdr);\r | |
ce4106be | 1290 | ConfigResp = AllocateZeroPool ((Len + NIC_ITEM_CONFIG_SIZE * 2 + 100) * sizeof (CHAR16));\r |
63886849 | 1291 | if (ConfigResp == NULL) {\r |
1292 | goto ON_EXIT;\r | |
1293 | }\r | |
1294 | StrCpy (ConfigResp, ConfigHdr);\r | |
1295 | \r | |
1296 | String = ConfigResp + Len;\r | |
1297 | UnicodeSPrint (\r | |
1298 | String, \r | |
ce4106be | 1299 | (8 + 4 + 7 + 4 + 1) * sizeof (CHAR16), \r |
63886849 | 1300 | L"&OFFSET=%04X&WIDTH=%04X", \r |
1301 | OFFSET_OF (NIC_IP4_CONFIG_INFO, Source), \r | |
1302 | sizeof (UINT32)\r | |
1303 | );\r | |
1304 | \r | |
1305 | Status = HiiConfigRouting->ExtractConfig (\r | |
1306 | HiiConfigRouting,\r | |
1307 | ConfigResp,\r | |
1308 | &AccessProgress,\r | |
1309 | &AccessResults\r | |
1310 | );\r | |
1311 | if (EFI_ERROR (Status)) {\r | |
1312 | goto ON_EXIT;\r | |
da1d0201 | 1313 | }\r |
1314 | \r | |
ce4106be | 1315 | ConfigInfo = AllocateZeroPool (sizeof (NIC_ITEM_CONFIG_SIZE));\r |
da1d0201 | 1316 | if (ConfigInfo == NULL) {\r |
63886849 | 1317 | goto ON_EXIT;\r |
da1d0201 | 1318 | }\r |
1319 | \r | |
63886849 | 1320 | ConfigInfo->Source = IP4_CONFIG_SOURCE_STATIC;\r |
1321 | Len = NIC_ITEM_CONFIG_SIZE;\r | |
1322 | Status = HiiConfigRouting->ConfigToBlock (\r | |
1323 | HiiConfigRouting,\r | |
1324 | AccessResults,\r | |
1325 | (UINT8 *) ConfigInfo,\r | |
1326 | &Len,\r | |
1327 | &AccessProgress\r | |
1328 | );\r | |
da1d0201 | 1329 | if (EFI_ERROR (Status)) {\r |
1330 | goto ON_EXIT;\r | |
1331 | }\r | |
1332 | \r | |
1333 | IsStatic = (BOOLEAN) (ConfigInfo->Source == IP4_CONFIG_SOURCE_STATIC);\r | |
63886849 | 1334 | \r |
da1d0201 | 1335 | ON_EXIT:\r |
1336 | \r | |
63886849 | 1337 | if (AccessResults != NULL) {\r |
1338 | FreePool (AccessResults);\r | |
1339 | }\r | |
1340 | if (ConfigInfo != NULL) {\r | |
1341 | FreePool (ConfigInfo);\r | |
1342 | }\r | |
1343 | if (ConfigResp != NULL) {\r | |
1344 | FreePool (ConfigResp);\r | |
1345 | }\r | |
1346 | if (ConfigHdr != NULL) {\r | |
1347 | FreePool (ConfigHdr);\r | |
1348 | }\r | |
da1d0201 | 1349 | \r |
1350 | return IsStatic;\r | |
1351 | }\r | |
1352 | \r | |
1353 | /**\r | |
1354 | Create an IPv4 device path node.\r | |
b9008c87 | 1355 | \r |
1356 | The header type of IPv4 device path node is MESSAGING_DEVICE_PATH.\r | |
1357 | The header subtype of IPv4 device path node is MSG_IPv4_DP.\r | |
1358 | The length of the IPv4 device path node in bytes is 19.\r | |
1359 | Get other info from parameters to make up the whole IPv4 device path node.\r | |
da1d0201 | 1360 | \r |
3e7104c2 | 1361 | @param[in, out] Node Pointer to the IPv4 device path node.\r |
1362 | @param[in] Controller The handle where the NIC IP4 config protocol resides.\r | |
1363 | @param[in] LocalIp The local IPv4 address.\r | |
1364 | @param[in] LocalPort The local port.\r | |
1365 | @param[in] RemoteIp The remote IPv4 address.\r | |
1366 | @param[in] RemotePort The remote port.\r | |
1367 | @param[in] Protocol The protocol type in the IP header.\r | |
1368 | @param[in] UseDefaultAddress Whether this instance is using default address or not.\r | |
da1d0201 | 1369 | \r |
da1d0201 | 1370 | **/\r |
1371 | VOID\r | |
7b414b4e | 1372 | EFIAPI\r |
da1d0201 | 1373 | NetLibCreateIPv4DPathNode (\r |
1374 | IN OUT IPv4_DEVICE_PATH *Node,\r | |
1375 | IN EFI_HANDLE Controller,\r | |
1376 | IN IP4_ADDR LocalIp,\r | |
1377 | IN UINT16 LocalPort,\r | |
1378 | IN IP4_ADDR RemoteIp,\r | |
1379 | IN UINT16 RemotePort,\r | |
1380 | IN UINT16 Protocol,\r | |
1381 | IN BOOLEAN UseDefaultAddress\r | |
1382 | )\r | |
1383 | {\r | |
1384 | Node->Header.Type = MESSAGING_DEVICE_PATH;\r | |
1385 | Node->Header.SubType = MSG_IPv4_DP;\r | |
1386 | SetDevicePathNodeLength (&Node->Header, 19);\r | |
1387 | \r | |
e48e37fc | 1388 | CopyMem (&Node->LocalIpAddress, &LocalIp, sizeof (EFI_IPv4_ADDRESS));\r |
1389 | CopyMem (&Node->RemoteIpAddress, &RemoteIp, sizeof (EFI_IPv4_ADDRESS));\r | |
da1d0201 | 1390 | \r |
1391 | Node->LocalPort = LocalPort;\r | |
1392 | Node->RemotePort = RemotePort;\r | |
1393 | \r | |
1394 | Node->Protocol = Protocol;\r | |
1395 | \r | |
1396 | if (!UseDefaultAddress) {\r | |
1397 | Node->StaticIpAddress = TRUE;\r | |
1398 | } else {\r | |
1399 | Node->StaticIpAddress = NetLibDefaultAddressIsStatic (Controller);\r | |
1400 | }\r | |
1401 | }\r | |
1402 | \r | |
1403 | \r | |
1404 | /**\r | |
1405 | Find the UNDI/SNP handle from controller and protocol GUID.\r | |
b9008c87 | 1406 | \r |
da1d0201 | 1407 | For example, IP will open a MNP child to transmit/receive\r |
1408 | packets, when MNP is stopped, IP should also be stopped. IP\r | |
1409 | needs to find its own private data which is related the IP's\r | |
1410 | service binding instance that is install on UNDI/SNP handle.\r | |
1411 | Now, the controller is either a MNP or ARP child handle. But\r | |
1412 | IP opens these handle BY_DRIVER, use that info, we can get the\r | |
1413 | UNDI/SNP handle.\r | |
1414 | \r | |
3e7104c2 | 1415 | @param[in] Controller Then protocol handle to check.\r |
1416 | @param[in] ProtocolGuid The protocol that is related with the handle.\r | |
da1d0201 | 1417 | \r |
3e7104c2 | 1418 | @return The UNDI/SNP handle or NULL for errors.\r |
da1d0201 | 1419 | \r |
1420 | **/\r | |
1421 | EFI_HANDLE\r | |
7b414b4e | 1422 | EFIAPI\r |
da1d0201 | 1423 | NetLibGetNicHandle (\r |
1424 | IN EFI_HANDLE Controller,\r | |
1425 | IN EFI_GUID *ProtocolGuid\r | |
1426 | )\r | |
1427 | {\r | |
1428 | EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenBuffer;\r | |
1429 | EFI_HANDLE Handle;\r | |
1430 | EFI_STATUS Status;\r | |
1431 | UINTN OpenCount;\r | |
1432 | UINTN Index;\r | |
1433 | \r | |
1434 | Status = gBS->OpenProtocolInformation (\r | |
1435 | Controller,\r | |
1436 | ProtocolGuid,\r | |
1437 | &OpenBuffer,\r | |
1438 | &OpenCount\r | |
1439 | );\r | |
1440 | \r | |
1441 | if (EFI_ERROR (Status)) {\r | |
1442 | return NULL;\r | |
1443 | }\r | |
1444 | \r | |
1445 | Handle = NULL;\r | |
1446 | \r | |
1447 | for (Index = 0; Index < OpenCount; Index++) {\r | |
1448 | if (OpenBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) {\r | |
1449 | Handle = OpenBuffer[Index].ControllerHandle;\r | |
1450 | break;\r | |
1451 | }\r | |
1452 | }\r | |
1453 | \r | |
1454 | gBS->FreePool (OpenBuffer);\r | |
1455 | return Handle;\r | |
1456 | }\r | |
1457 | \r | |
36ee91ca | 1458 | /**\r |
1459 | Add a Deferred Procedure Call to the end of the DPC queue.\r | |
1460 | \r | |
3e7104c2 | 1461 | @param[in] DpcTpl The EFI_TPL that the DPC should be invoked.\r |
1462 | @param[in] DpcProcedure Pointer to the DPC's function.\r | |
1463 | @param[in] DpcContext Pointer to the DPC's context. Passed to DpcProcedure\r | |
1464 | when DpcProcedure is invoked.\r | |
36ee91ca | 1465 | \r |
1466 | @retval EFI_SUCCESS The DPC was queued.\r | |
3e7104c2 | 1467 | @retval EFI_INVALID_PARAMETER DpcTpl is not a valid EFI_TPL, or DpcProcedure\r |
1468 | is NULL.\r | |
36ee91ca | 1469 | @retval EFI_OUT_OF_RESOURCES There are not enough resources available to\r |
1470 | add the DPC to the queue.\r | |
1471 | \r | |
1472 | **/\r | |
1473 | EFI_STATUS\r | |
7b414b4e | 1474 | EFIAPI\r |
36ee91ca | 1475 | NetLibQueueDpc (\r |
1476 | IN EFI_TPL DpcTpl,\r | |
1477 | IN EFI_DPC_PROCEDURE DpcProcedure,\r | |
1478 | IN VOID *DpcContext OPTIONAL\r | |
1479 | )\r | |
1480 | {\r | |
1481 | return mDpc->QueueDpc (mDpc, DpcTpl, DpcProcedure, DpcContext);\r | |
1482 | }\r | |
1483 | \r | |
1484 | /**\r | |
3e7104c2 | 1485 | Dispatch the queue of DPCs. ALL DPCs that have been queued with a DpcTpl\r |
1486 | value greater than or equal to the current TPL are invoked in the order that\r | |
1487 | they were queued. DPCs with higher DpcTpl values are invoked before DPCs with\r | |
1488 | lower DpcTpl values.\r | |
36ee91ca | 1489 | \r |
1490 | @retval EFI_SUCCESS One or more DPCs were invoked.\r | |
1491 | @retval EFI_NOT_FOUND No DPCs were invoked.\r | |
1492 | \r | |
1493 | **/\r | |
1494 | EFI_STATUS\r | |
7b414b4e | 1495 | EFIAPI\r |
36ee91ca | 1496 | NetLibDispatchDpc (\r |
1497 | VOID\r | |
1498 | )\r | |
1499 | {\r | |
1500 | return mDpc->DispatchDpc(mDpc);\r | |
1501 | }\r | |
1502 | \r | |
36ee91ca | 1503 | /**\r |
1504 | The constructor function caches the pointer to DPC protocol.\r | |
1505 | \r | |
1506 | The constructor function locates DPC protocol from protocol database.\r | |
1507 | It will ASSERT() if that operation fails and it will always return EFI_SUCCESS.\r | |
1508 | \r | |
3e7104c2 | 1509 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r |
1510 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
36ee91ca | 1511 | \r |
1512 | @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r | |
1513 | \r | |
1514 | **/\r | |
1515 | EFI_STATUS\r | |
1516 | EFIAPI\r | |
1517 | NetLibConstructor (\r | |
1518 | IN EFI_HANDLE ImageHandle,\r | |
1519 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1520 | )\r | |
1521 | {\r | |
1522 | EFI_STATUS Status;\r | |
1523 | \r | |
1524 | Status = gBS->LocateProtocol (&gEfiDpcProtocolGuid, NULL, (VOID**) &mDpc);\r | |
1525 | ASSERT_EFI_ERROR (Status);\r | |
1526 | ASSERT (mDpc != NULL);\r | |
1527 | \r | |
1528 | return Status;\r | |
1529 | }\r |