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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 |
752ef5d8 | 16 | #include <Protocol/DriverBinding.h>\r |
da1d0201 | 17 | #include <Protocol/ServiceBinding.h>\r |
18 | #include <Protocol/SimpleNetwork.h>\r | |
63886849 | 19 | #include <Protocol/HiiConfigRouting.h>\r |
3012ce5c | 20 | #include <Protocol/ComponentName.h>\r |
21 | #include <Protocol/ComponentName2.h>\r | |
e1a590c3 | 22 | #include <Protocol/Dpc.h>\r |
da1d0201 | 23 | \r |
63886849 | 24 | #include <Guid/NicIp4ConfigNvData.h>\r |
25 | \r | |
da1d0201 | 26 | #include <Library/NetLib.h>\r |
27 | #include <Library/BaseLib.h>\r | |
28 | #include <Library/DebugLib.h>\r | |
29 | #include <Library/BaseMemoryLib.h>\r | |
30 | #include <Library/UefiBootServicesTableLib.h>\r | |
31 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
da1d0201 | 32 | #include <Library/MemoryAllocationLib.h>\r |
1232b214 | 33 | #include <Library/DevicePathLib.h>\r |
63886849 | 34 | #include <Library/HiiLib.h>\r |
35 | #include <Library/PrintLib.h>\r | |
da1d0201 | 36 | \r |
36ee91ca | 37 | EFI_DPC_PROTOCOL *mDpc = NULL;\r |
38 | \r | |
ac7e320c LG |
39 | GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mNetLibHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};\r |
40 | \r | |
ce4106be | 41 | #define NIC_ITEM_CONFIG_SIZE sizeof (NIC_IP4_CONFIG_INFO) + sizeof (EFI_IP4_ROUTE_TABLE) * MAX_IP4_CONFIG_IN_VARIABLE\r |
63886849 | 42 | \r |
da1d0201 | 43 | //\r |
44 | // All the supported IP4 maskes in host byte order.\r | |
45 | //\r | |
2a86ff1c | 46 | IP4_ADDR gIp4AllMasks[IP4_MASK_NUM] = {\r |
da1d0201 | 47 | 0x00000000,\r |
48 | 0x80000000,\r | |
49 | 0xC0000000,\r | |
50 | 0xE0000000,\r | |
51 | 0xF0000000,\r | |
52 | 0xF8000000,\r | |
53 | 0xFC000000,\r | |
54 | 0xFE000000,\r | |
55 | \r | |
56 | 0xFF000000,\r | |
57 | 0xFF800000,\r | |
58 | 0xFFC00000,\r | |
59 | 0xFFE00000,\r | |
60 | 0xFFF00000,\r | |
61 | 0xFFF80000,\r | |
62 | 0xFFFC0000,\r | |
63 | 0xFFFE0000,\r | |
64 | \r | |
65 | 0xFFFF0000,\r | |
66 | 0xFFFF8000,\r | |
67 | 0xFFFFC000,\r | |
68 | 0xFFFFE000,\r | |
69 | 0xFFFFF000,\r | |
70 | 0xFFFFF800,\r | |
71 | 0xFFFFFC00,\r | |
72 | 0xFFFFFE00,\r | |
73 | \r | |
74 | 0xFFFFFF00,\r | |
75 | 0xFFFFFF80,\r | |
76 | 0xFFFFFFC0,\r | |
77 | 0xFFFFFFE0,\r | |
78 | 0xFFFFFFF0,\r | |
79 | 0xFFFFFFF8,\r | |
80 | 0xFFFFFFFC,\r | |
81 | 0xFFFFFFFE,\r | |
82 | 0xFFFFFFFF,\r | |
83 | };\r | |
84 | \r | |
85 | EFI_IPv4_ADDRESS mZeroIp4Addr = {{0, 0, 0, 0}};\r | |
86 | \r | |
da1d0201 | 87 | /**\r |
b9008c87 | 88 | Return the length of the mask. \r |
89 | \r | |
90 | Return the length of the mask, the correct value is from 0 to 32.\r | |
91 | If the mask is invalid, return the invalid length 33, which is IP4_MASK_NUM.\r | |
da1d0201 | 92 | NetMask is in the host byte order.\r |
93 | \r | |
3e7104c2 | 94 | @param[in] NetMask The netmask to get the length from.\r |
da1d0201 | 95 | \r |
b9008c87 | 96 | @return The length of the netmask, IP4_MASK_NUM if the mask is invalid.\r |
3e7104c2 | 97 | \r |
da1d0201 | 98 | **/\r |
99 | INTN\r | |
7b414b4e | 100 | EFIAPI\r |
da1d0201 | 101 | NetGetMaskLength (\r |
102 | IN IP4_ADDR NetMask\r | |
103 | )\r | |
104 | {\r | |
105 | INTN Index;\r | |
106 | \r | |
107 | for (Index = 0; Index < IP4_MASK_NUM; Index++) {\r | |
2a86ff1c | 108 | if (NetMask == gIp4AllMasks[Index]) {\r |
da1d0201 | 109 | break;\r |
110 | }\r | |
111 | }\r | |
112 | \r | |
113 | return Index;\r | |
114 | }\r | |
115 | \r | |
116 | \r | |
117 | \r | |
118 | /**\r | |
b9008c87 | 119 | Return the class of the IP address, such as class A, B, C.\r |
da1d0201 | 120 | Addr is in host byte order.\r |
b9008c87 | 121 | \r |
122 | The address of class A starts with 0.\r | |
123 | If the address belong to class A, return IP4_ADDR_CLASSA.\r | |
124 | The address of class B starts with 10. \r | |
125 | If the address belong to class B, return IP4_ADDR_CLASSB.\r | |
126 | The address of class C starts with 110. \r | |
127 | If the address belong to class C, return IP4_ADDR_CLASSC.\r | |
128 | The address of class D starts with 1110. \r | |
129 | If the address belong to class D, return IP4_ADDR_CLASSD.\r | |
130 | The address of class E starts with 1111.\r | |
131 | If the address belong to class E, return IP4_ADDR_CLASSE.\r | |
da1d0201 | 132 | \r |
b9008c87 | 133 | \r |
3e7104c2 | 134 | @param[in] Addr The address to get the class from.\r |
da1d0201 | 135 | \r |
3e7104c2 | 136 | @return IP address class, such as IP4_ADDR_CLASSA.\r |
da1d0201 | 137 | \r |
138 | **/\r | |
139 | INTN\r | |
7b414b4e | 140 | EFIAPI\r |
da1d0201 | 141 | NetGetIpClass (\r |
142 | IN IP4_ADDR Addr\r | |
143 | )\r | |
144 | {\r | |
145 | UINT8 ByteOne;\r | |
146 | \r | |
147 | ByteOne = (UINT8) (Addr >> 24);\r | |
148 | \r | |
149 | if ((ByteOne & 0x80) == 0) {\r | |
150 | return IP4_ADDR_CLASSA;\r | |
151 | \r | |
152 | } else if ((ByteOne & 0xC0) == 0x80) {\r | |
153 | return IP4_ADDR_CLASSB;\r | |
154 | \r | |
155 | } else if ((ByteOne & 0xE0) == 0xC0) {\r | |
156 | return IP4_ADDR_CLASSC;\r | |
157 | \r | |
158 | } else if ((ByteOne & 0xF0) == 0xE0) {\r | |
159 | return IP4_ADDR_CLASSD;\r | |
160 | \r | |
161 | } else {\r | |
162 | return IP4_ADDR_CLASSE;\r | |
163 | \r | |
164 | }\r | |
165 | }\r | |
166 | \r | |
167 | \r | |
168 | /**\r | |
169 | Check whether the IP is a valid unicast address according to\r | |
b9008c87 | 170 | the netmask. If NetMask is zero, use the IP address's class to get the default mask.\r |
171 | \r | |
172 | If Ip is 0, IP is not a valid unicast address.\r | |
173 | Class D address is used for multicasting and class E address is reserved for future. If Ip\r | |
174 | belongs to class D or class E, IP is not a valid unicast address. \r | |
175 | If all bits of the host address of IP are 0 or 1, IP is also not a valid unicast address.\r | |
da1d0201 | 176 | \r |
3e7104c2 | 177 | @param[in] Ip The IP to check against.\r |
178 | @param[in] NetMask The mask of the IP.\r | |
da1d0201 | 179 | \r |
3e7104c2 | 180 | @return TRUE if IP is a valid unicast address on the network, otherwise FALSE.\r |
da1d0201 | 181 | \r |
182 | **/\r | |
183 | BOOLEAN\r | |
7b414b4e | 184 | EFIAPI\r |
da1d0201 | 185 | Ip4IsUnicast (\r |
186 | IN IP4_ADDR Ip,\r | |
187 | IN IP4_ADDR NetMask\r | |
188 | )\r | |
189 | {\r | |
190 | INTN Class;\r | |
191 | \r | |
192 | Class = NetGetIpClass (Ip);\r | |
193 | \r | |
194 | if ((Ip == 0) || (Class >= IP4_ADDR_CLASSD)) {\r | |
195 | return FALSE;\r | |
196 | }\r | |
197 | \r | |
198 | if (NetMask == 0) {\r | |
2a86ff1c | 199 | NetMask = gIp4AllMasks[Class << 3];\r |
da1d0201 | 200 | }\r |
201 | \r | |
202 | if (((Ip &~NetMask) == ~NetMask) || ((Ip &~NetMask) == 0)) {\r | |
203 | return FALSE;\r | |
204 | }\r | |
205 | \r | |
206 | return TRUE;\r | |
207 | }\r | |
208 | \r | |
209 | \r | |
210 | /**\r | |
211 | Initialize a random seed using current time.\r | |
b9008c87 | 212 | \r |
213 | Get current time first. Then initialize a random seed based on some basic \r | |
214 | mathematics operation on the hour, day, minute, second, nanosecond and year \r | |
215 | of the current time.\r | |
216 | \r | |
da1d0201 | 217 | @return The random seed initialized with current time.\r |
218 | \r | |
219 | **/\r | |
220 | UINT32\r | |
7b414b4e | 221 | EFIAPI\r |
da1d0201 | 222 | NetRandomInitSeed (\r |
223 | VOID\r | |
224 | )\r | |
225 | {\r | |
226 | EFI_TIME Time;\r | |
227 | UINT32 Seed;\r | |
228 | \r | |
229 | gRT->GetTime (&Time, NULL);\r | |
36ee91ca | 230 | Seed = (~Time.Hour << 24 | Time.Day << 16 | Time.Minute << 8 | Time.Second);\r |
da1d0201 | 231 | Seed ^= Time.Nanosecond;\r |
232 | Seed ^= Time.Year << 7;\r | |
233 | \r | |
234 | return Seed;\r | |
235 | }\r | |
236 | \r | |
237 | \r | |
238 | /**\r | |
b9008c87 | 239 | Extract a UINT32 from a byte stream.\r |
240 | \r | |
241 | Copy a UINT32 from a byte stream, then converts it from Network \r | |
242 | byte order to host byte order. Use this function to avoid alignment error.\r | |
da1d0201 | 243 | \r |
3e7104c2 | 244 | @param[in] Buf The buffer to extract the UINT32.\r |
da1d0201 | 245 | \r |
246 | @return The UINT32 extracted.\r | |
247 | \r | |
248 | **/\r | |
249 | UINT32\r | |
7b414b4e | 250 | EFIAPI\r |
da1d0201 | 251 | NetGetUint32 (\r |
252 | IN UINT8 *Buf\r | |
253 | )\r | |
254 | {\r | |
255 | UINT32 Value;\r | |
256 | \r | |
e48e37fc | 257 | CopyMem (&Value, Buf, sizeof (UINT32));\r |
da1d0201 | 258 | return NTOHL (Value);\r |
259 | }\r | |
260 | \r | |
261 | \r | |
262 | /**\r | |
b9008c87 | 263 | Put a UINT32 to the byte stream in network byte order. \r |
264 | \r | |
265 | Converts a UINT32 from host byte order to network byte order. Then copy it to the \r | |
266 | byte stream.\r | |
da1d0201 | 267 | \r |
3e7104c2 | 268 | @param[in, out] Buf The buffer to put the UINT32.\r |
269 | @param[in] Data The data to put.\r | |
270 | \r | |
da1d0201 | 271 | **/\r |
272 | VOID\r | |
7b414b4e | 273 | EFIAPI\r |
da1d0201 | 274 | NetPutUint32 (\r |
3e7104c2 | 275 | IN OUT UINT8 *Buf,\r |
276 | IN UINT32 Data\r | |
da1d0201 | 277 | )\r |
278 | {\r | |
279 | Data = HTONL (Data);\r | |
e48e37fc | 280 | CopyMem (Buf, &Data, sizeof (UINT32));\r |
da1d0201 | 281 | }\r |
282 | \r | |
283 | \r | |
284 | /**\r | |
b9008c87 | 285 | Remove the first node entry on the list, and return the removed node entry.\r |
286 | \r | |
287 | Removes the first node Entry from a doubly linked list. It is up to the caller of\r | |
288 | this function to release the memory used by the first node if that is required. On\r | |
289 | exit, the removed node is returned. \r | |
290 | \r | |
291 | If Head is NULL, then ASSERT().\r | |
292 | If Head was not initialized, then ASSERT().\r | |
293 | If PcdMaximumLinkedListLength is not zero, and the number of nodes in the\r | |
294 | linked list including the head node is greater than or equal to PcdMaximumLinkedListLength,\r | |
295 | then ASSERT(). \r | |
da1d0201 | 296 | \r |
3e7104c2 | 297 | @param[in, out] Head The list header.\r |
da1d0201 | 298 | \r |
b9008c87 | 299 | @return The first node entry that is removed from the list, NULL if the list is empty.\r |
da1d0201 | 300 | \r |
301 | **/\r | |
e48e37fc | 302 | LIST_ENTRY *\r |
7b414b4e | 303 | EFIAPI\r |
da1d0201 | 304 | NetListRemoveHead (\r |
3e7104c2 | 305 | IN OUT LIST_ENTRY *Head\r |
da1d0201 | 306 | )\r |
307 | {\r | |
e48e37fc | 308 | LIST_ENTRY *First;\r |
da1d0201 | 309 | \r |
310 | ASSERT (Head != NULL);\r | |
311 | \r | |
e48e37fc | 312 | if (IsListEmpty (Head)) {\r |
da1d0201 | 313 | return NULL;\r |
314 | }\r | |
315 | \r | |
316 | First = Head->ForwardLink;\r | |
317 | Head->ForwardLink = First->ForwardLink;\r | |
318 | First->ForwardLink->BackLink = Head;\r | |
319 | \r | |
320 | DEBUG_CODE (\r | |
e48e37fc | 321 | First->ForwardLink = (LIST_ENTRY *) NULL;\r |
322 | First->BackLink = (LIST_ENTRY *) NULL;\r | |
da1d0201 | 323 | );\r |
324 | \r | |
325 | return First;\r | |
326 | }\r | |
327 | \r | |
328 | \r | |
329 | /**\r | |
b9008c87 | 330 | Remove the last node entry on the list and and return the removed node entry.\r |
331 | \r | |
332 | Removes the last node entry from a doubly linked list. It is up to the caller of\r | |
333 | this function to release the memory used by the first node if that is required. On\r | |
334 | exit, the removed node is returned. \r | |
da1d0201 | 335 | \r |
b9008c87 | 336 | If Head is NULL, then ASSERT().\r |
337 | If Head was not initialized, then ASSERT().\r | |
338 | If PcdMaximumLinkedListLength is not zero, and the number of nodes in the\r | |
339 | linked list including the head node is greater than or equal to PcdMaximumLinkedListLength,\r | |
340 | then ASSERT(). \r | |
341 | \r | |
3e7104c2 | 342 | @param[in, out] Head The list head.\r |
da1d0201 | 343 | \r |
b9008c87 | 344 | @return The last node entry that is removed from the list, NULL if the list is empty.\r |
da1d0201 | 345 | \r |
346 | **/\r | |
e48e37fc | 347 | LIST_ENTRY *\r |
7b414b4e | 348 | EFIAPI\r |
da1d0201 | 349 | NetListRemoveTail (\r |
3e7104c2 | 350 | IN OUT LIST_ENTRY *Head\r |
da1d0201 | 351 | )\r |
352 | {\r | |
e48e37fc | 353 | LIST_ENTRY *Last;\r |
da1d0201 | 354 | \r |
355 | ASSERT (Head != NULL);\r | |
356 | \r | |
e48e37fc | 357 | if (IsListEmpty (Head)) {\r |
da1d0201 | 358 | return NULL;\r |
359 | }\r | |
360 | \r | |
361 | Last = Head->BackLink;\r | |
362 | Head->BackLink = Last->BackLink;\r | |
363 | Last->BackLink->ForwardLink = Head;\r | |
364 | \r | |
365 | DEBUG_CODE (\r | |
e48e37fc | 366 | Last->ForwardLink = (LIST_ENTRY *) NULL;\r |
367 | Last->BackLink = (LIST_ENTRY *) NULL;\r | |
da1d0201 | 368 | );\r |
369 | \r | |
370 | return Last;\r | |
371 | }\r | |
372 | \r | |
373 | \r | |
374 | /**\r | |
b9008c87 | 375 | Insert a new node entry after a designated node entry of a doubly linked list.\r |
376 | \r | |
377 | Inserts a new node entry donated by NewEntry after the node entry donated by PrevEntry\r | |
378 | of the doubly linked list.\r | |
379 | \r | |
3e7104c2 | 380 | @param[in, out] PrevEntry The previous entry to insert after.\r |
381 | @param[in, out] NewEntry The new entry to insert.\r | |
da1d0201 | 382 | \r |
383 | **/\r | |
384 | VOID\r | |
7b414b4e | 385 | EFIAPI\r |
da1d0201 | 386 | NetListInsertAfter (\r |
3e7104c2 | 387 | IN OUT LIST_ENTRY *PrevEntry,\r |
388 | IN OUT LIST_ENTRY *NewEntry\r | |
da1d0201 | 389 | )\r |
390 | {\r | |
391 | NewEntry->BackLink = PrevEntry;\r | |
392 | NewEntry->ForwardLink = PrevEntry->ForwardLink;\r | |
393 | PrevEntry->ForwardLink->BackLink = NewEntry;\r | |
394 | PrevEntry->ForwardLink = NewEntry;\r | |
395 | }\r | |
396 | \r | |
397 | \r | |
398 | /**\r | |
b9008c87 | 399 | Insert a new node entry before a designated node entry of a doubly linked list.\r |
400 | \r | |
401 | Inserts a new node entry donated by NewEntry after the node entry donated by PostEntry\r | |
402 | of the doubly linked list.\r | |
403 | \r | |
3e7104c2 | 404 | @param[in, out] PostEntry The entry to insert before.\r |
405 | @param[in, out] NewEntry The new entry to insert.\r | |
da1d0201 | 406 | \r |
407 | **/\r | |
408 | VOID\r | |
7b414b4e | 409 | EFIAPI\r |
da1d0201 | 410 | NetListInsertBefore (\r |
3e7104c2 | 411 | IN OUT LIST_ENTRY *PostEntry,\r |
412 | IN OUT LIST_ENTRY *NewEntry\r | |
da1d0201 | 413 | )\r |
414 | {\r | |
415 | NewEntry->ForwardLink = PostEntry;\r | |
416 | NewEntry->BackLink = PostEntry->BackLink;\r | |
417 | PostEntry->BackLink->ForwardLink = NewEntry;\r | |
418 | PostEntry->BackLink = NewEntry;\r | |
419 | }\r | |
420 | \r | |
421 | \r | |
422 | /**\r | |
423 | Initialize the netmap. Netmap is a reposity to keep the <Key, Value> pairs.\r | |
b9008c87 | 424 | \r |
425 | Initialize the forward and backward links of two head nodes donated by Map->Used \r | |
426 | and Map->Recycled of two doubly linked lists.\r | |
427 | Initializes the count of the <Key, Value> pairs in the netmap to zero.\r | |
428 | \r | |
429 | If Map is NULL, then ASSERT().\r | |
8f5e6151 | 430 | If the address of Map->Used is NULL, then ASSERT().\r |
b9008c87 | 431 | If the address of Map->Recycled is NULl, then ASSERT().\r |
432 | \r | |
3e7104c2 | 433 | @param[in, out] Map The netmap to initialize.\r |
da1d0201 | 434 | \r |
435 | **/\r | |
436 | VOID\r | |
7b414b4e | 437 | EFIAPI\r |
da1d0201 | 438 | NetMapInit (\r |
3e7104c2 | 439 | IN OUT NET_MAP *Map\r |
da1d0201 | 440 | )\r |
441 | {\r | |
442 | ASSERT (Map != NULL);\r | |
443 | \r | |
e48e37fc | 444 | InitializeListHead (&Map->Used);\r |
445 | InitializeListHead (&Map->Recycled);\r | |
da1d0201 | 446 | Map->Count = 0;\r |
447 | }\r | |
448 | \r | |
449 | \r | |
450 | /**\r | |
451 | To clean up the netmap, that is, release allocated memories.\r | |
b9008c87 | 452 | \r |
453 | Removes all nodes of the Used doubly linked list and free memory of all related netmap items.\r | |
454 | Removes all nodes of the Recycled doubly linked list and free memory of all related netmap items.\r | |
455 | The number of the <Key, Value> pairs in the netmap is set to be zero.\r | |
456 | \r | |
457 | If Map is NULL, then ASSERT().\r | |
458 | \r | |
3e7104c2 | 459 | @param[in, out] Map The netmap to clean up.\r |
da1d0201 | 460 | \r |
461 | **/\r | |
462 | VOID\r | |
7b414b4e | 463 | EFIAPI\r |
da1d0201 | 464 | NetMapClean (\r |
3e7104c2 | 465 | IN OUT NET_MAP *Map\r |
da1d0201 | 466 | )\r |
467 | {\r | |
468 | NET_MAP_ITEM *Item;\r | |
e48e37fc | 469 | LIST_ENTRY *Entry;\r |
470 | LIST_ENTRY *Next;\r | |
da1d0201 | 471 | \r |
472 | ASSERT (Map != NULL);\r | |
473 | \r | |
474 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Map->Used) {\r | |
475 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r | |
476 | \r | |
e48e37fc | 477 | RemoveEntryList (&Item->Link);\r |
da1d0201 | 478 | Map->Count--;\r |
479 | \r | |
e48e37fc | 480 | gBS->FreePool (Item);\r |
da1d0201 | 481 | }\r |
482 | \r | |
e48e37fc | 483 | ASSERT ((Map->Count == 0) && IsListEmpty (&Map->Used));\r |
da1d0201 | 484 | \r |
485 | NET_LIST_FOR_EACH_SAFE (Entry, Next, &Map->Recycled) {\r | |
486 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r | |
487 | \r | |
e48e37fc | 488 | RemoveEntryList (&Item->Link);\r |
489 | gBS->FreePool (Item);\r | |
da1d0201 | 490 | }\r |
491 | \r | |
e48e37fc | 492 | ASSERT (IsListEmpty (&Map->Recycled));\r |
da1d0201 | 493 | }\r |
494 | \r | |
495 | \r | |
496 | /**\r | |
b9008c87 | 497 | Test whether the netmap is empty and return true if it is.\r |
498 | \r | |
499 | If the number of the <Key, Value> pairs in the netmap is zero, return TRUE.\r | |
500 | \r | |
501 | If Map is NULL, then ASSERT().\r | |
502 | \r | |
503 | \r | |
3e7104c2 | 504 | @param[in] Map The net map to test.\r |
da1d0201 | 505 | \r |
506 | @return TRUE if the netmap is empty, otherwise FALSE.\r | |
507 | \r | |
508 | **/\r | |
509 | BOOLEAN\r | |
7b414b4e | 510 | EFIAPI\r |
da1d0201 | 511 | NetMapIsEmpty (\r |
512 | IN NET_MAP *Map\r | |
513 | )\r | |
514 | {\r | |
515 | ASSERT (Map != NULL);\r | |
516 | return (BOOLEAN) (Map->Count == 0);\r | |
517 | }\r | |
518 | \r | |
519 | \r | |
520 | /**\r | |
521 | Return the number of the <Key, Value> pairs in the netmap.\r | |
522 | \r | |
3e7104c2 | 523 | @param[in] Map The netmap to get the entry number.\r |
da1d0201 | 524 | \r |
525 | @return The entry number in the netmap.\r | |
526 | \r | |
527 | **/\r | |
528 | UINTN\r | |
7b414b4e | 529 | EFIAPI\r |
da1d0201 | 530 | NetMapGetCount (\r |
531 | IN NET_MAP *Map\r | |
532 | )\r | |
533 | {\r | |
534 | return Map->Count;\r | |
535 | }\r | |
536 | \r | |
537 | \r | |
538 | /**\r | |
b9008c87 | 539 | Return one allocated item. \r |
540 | \r | |
541 | If the Recycled doubly linked list of the netmap is empty, it will try to allocate \r | |
542 | a batch of items if there are enough resources and add corresponding nodes to the begining\r | |
543 | of the Recycled doubly linked list of the netmap. Otherwise, it will directly remove\r | |
544 | the fist node entry of the Recycled doubly linked list and return the corresponding item.\r | |
545 | \r | |
546 | If Map is NULL, then ASSERT().\r | |
547 | \r | |
3e7104c2 | 548 | @param[in, out] Map The netmap to allocate item for.\r |
da1d0201 | 549 | \r |
3e7104c2 | 550 | @return The allocated item. If NULL, the\r |
551 | allocation failed due to resource limit.\r | |
da1d0201 | 552 | \r |
553 | **/\r | |
da1d0201 | 554 | NET_MAP_ITEM *\r |
555 | NetMapAllocItem (\r | |
3e7104c2 | 556 | IN OUT NET_MAP *Map\r |
da1d0201 | 557 | )\r |
558 | {\r | |
559 | NET_MAP_ITEM *Item;\r | |
e48e37fc | 560 | LIST_ENTRY *Head;\r |
da1d0201 | 561 | UINTN Index;\r |
562 | \r | |
563 | ASSERT (Map != NULL);\r | |
564 | \r | |
565 | Head = &Map->Recycled;\r | |
566 | \r | |
e48e37fc | 567 | if (IsListEmpty (Head)) {\r |
da1d0201 | 568 | for (Index = 0; Index < NET_MAP_INCREAMENT; Index++) {\r |
e48e37fc | 569 | Item = AllocatePool (sizeof (NET_MAP_ITEM));\r |
da1d0201 | 570 | \r |
571 | if (Item == NULL) {\r | |
572 | if (Index == 0) {\r | |
573 | return NULL;\r | |
574 | }\r | |
575 | \r | |
576 | break;\r | |
577 | }\r | |
578 | \r | |
e48e37fc | 579 | InsertHeadList (Head, &Item->Link);\r |
da1d0201 | 580 | }\r |
581 | }\r | |
582 | \r | |
583 | Item = NET_LIST_HEAD (Head, NET_MAP_ITEM, Link);\r | |
584 | NetListRemoveHead (Head);\r | |
585 | \r | |
586 | return Item;\r | |
587 | }\r | |
588 | \r | |
589 | \r | |
590 | /**\r | |
591 | Allocate an item to save the <Key, Value> pair to the head of the netmap.\r | |
b9008c87 | 592 | \r |
593 | Allocate an item to save the <Key, Value> pair and add corresponding node entry\r | |
594 | to the beginning of the Used doubly linked list. The number of the <Key, Value> \r | |
595 | pairs in the netmap increase by 1.\r | |
da1d0201 | 596 | \r |
b9008c87 | 597 | If Map is NULL, then ASSERT().\r |
598 | \r | |
3e7104c2 | 599 | @param[in, out] Map The netmap to insert into.\r |
600 | @param[in] Key The user's key.\r | |
601 | @param[in] Value The user's value for the key.\r | |
da1d0201 | 602 | \r |
3e7104c2 | 603 | @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item.\r |
604 | @retval EFI_SUCCESS The item is inserted to the head.\r | |
da1d0201 | 605 | \r |
606 | **/\r | |
607 | EFI_STATUS\r | |
7b414b4e | 608 | EFIAPI\r |
da1d0201 | 609 | NetMapInsertHead (\r |
3e7104c2 | 610 | IN OUT NET_MAP *Map,\r |
da1d0201 | 611 | IN VOID *Key,\r |
612 | IN VOID *Value OPTIONAL\r | |
613 | )\r | |
614 | {\r | |
615 | NET_MAP_ITEM *Item;\r | |
616 | \r | |
617 | ASSERT (Map != NULL);\r | |
618 | \r | |
619 | Item = NetMapAllocItem (Map);\r | |
620 | \r | |
621 | if (Item == NULL) {\r | |
622 | return EFI_OUT_OF_RESOURCES;\r | |
623 | }\r | |
624 | \r | |
625 | Item->Key = Key;\r | |
626 | Item->Value = Value;\r | |
e48e37fc | 627 | InsertHeadList (&Map->Used, &Item->Link);\r |
da1d0201 | 628 | \r |
629 | Map->Count++;\r | |
630 | return EFI_SUCCESS;\r | |
631 | }\r | |
632 | \r | |
633 | \r | |
634 | /**\r | |
635 | Allocate an item to save the <Key, Value> pair to the tail of the netmap.\r | |
636 | \r | |
b9008c87 | 637 | Allocate an item to save the <Key, Value> pair and add corresponding node entry\r |
638 | to the tail of the Used doubly linked list. The number of the <Key, Value> \r | |
639 | pairs in the netmap increase by 1.\r | |
640 | \r | |
641 | If Map is NULL, then ASSERT().\r | |
642 | \r | |
3e7104c2 | 643 | @param[in, out] Map The netmap to insert into.\r |
644 | @param[in] Key The user's key.\r | |
645 | @param[in] Value The user's value for the key.\r | |
da1d0201 | 646 | \r |
3e7104c2 | 647 | @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item.\r |
648 | @retval EFI_SUCCESS The item is inserted to the tail.\r | |
da1d0201 | 649 | \r |
650 | **/\r | |
651 | EFI_STATUS\r | |
7b414b4e | 652 | EFIAPI\r |
da1d0201 | 653 | NetMapInsertTail (\r |
3e7104c2 | 654 | IN OUT NET_MAP *Map,\r |
da1d0201 | 655 | IN VOID *Key,\r |
656 | IN VOID *Value OPTIONAL\r | |
657 | )\r | |
658 | {\r | |
659 | NET_MAP_ITEM *Item;\r | |
660 | \r | |
661 | ASSERT (Map != NULL);\r | |
662 | \r | |
663 | Item = NetMapAllocItem (Map);\r | |
664 | \r | |
665 | if (Item == NULL) {\r | |
666 | return EFI_OUT_OF_RESOURCES;\r | |
667 | }\r | |
668 | \r | |
669 | Item->Key = Key;\r | |
670 | Item->Value = Value;\r | |
e48e37fc | 671 | InsertTailList (&Map->Used, &Item->Link);\r |
da1d0201 | 672 | \r |
673 | Map->Count++;\r | |
674 | \r | |
675 | return EFI_SUCCESS;\r | |
676 | }\r | |
677 | \r | |
678 | \r | |
679 | /**\r | |
b9008c87 | 680 | Check whether the item is in the Map and return TRUE if it is.\r |
da1d0201 | 681 | \r |
3e7104c2 | 682 | @param[in] Map The netmap to search within.\r |
683 | @param[in] Item The item to search.\r | |
da1d0201 | 684 | \r |
685 | @return TRUE if the item is in the netmap, otherwise FALSE.\r | |
686 | \r | |
687 | **/\r | |
da1d0201 | 688 | BOOLEAN\r |
689 | NetItemInMap (\r | |
690 | IN NET_MAP *Map,\r | |
691 | IN NET_MAP_ITEM *Item\r | |
692 | )\r | |
693 | {\r | |
e48e37fc | 694 | LIST_ENTRY *ListEntry;\r |
da1d0201 | 695 | \r |
696 | NET_LIST_FOR_EACH (ListEntry, &Map->Used) {\r | |
697 | if (ListEntry == &Item->Link) {\r | |
698 | return TRUE;\r | |
699 | }\r | |
700 | }\r | |
701 | \r | |
702 | return FALSE;\r | |
703 | }\r | |
704 | \r | |
705 | \r | |
706 | /**\r | |
b9008c87 | 707 | Find the key in the netmap and returns the point to the item contains the Key.\r |
708 | \r | |
709 | Iterate the Used doubly linked list of the netmap to get every item. Compare the key of every \r | |
710 | item with the key to search. It returns the point to the item contains the Key if found.\r | |
da1d0201 | 711 | \r |
b9008c87 | 712 | If Map is NULL, then ASSERT().\r |
713 | \r | |
3e7104c2 | 714 | @param[in] Map The netmap to search within.\r |
715 | @param[in] Key The key to search.\r | |
da1d0201 | 716 | \r |
717 | @return The point to the item contains the Key, or NULL if Key isn't in the map.\r | |
718 | \r | |
719 | **/\r | |
720 | NET_MAP_ITEM *\r | |
7b414b4e | 721 | EFIAPI\r |
da1d0201 | 722 | NetMapFindKey (\r |
723 | IN NET_MAP *Map,\r | |
724 | IN VOID *Key\r | |
725 | )\r | |
726 | {\r | |
e48e37fc | 727 | LIST_ENTRY *Entry;\r |
da1d0201 | 728 | NET_MAP_ITEM *Item;\r |
729 | \r | |
730 | ASSERT (Map != NULL);\r | |
731 | \r | |
732 | NET_LIST_FOR_EACH (Entry, &Map->Used) {\r | |
733 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r | |
734 | \r | |
735 | if (Item->Key == Key) {\r | |
736 | return Item;\r | |
737 | }\r | |
738 | }\r | |
739 | \r | |
740 | return NULL;\r | |
741 | }\r | |
742 | \r | |
743 | \r | |
744 | /**\r | |
b9008c87 | 745 | Remove the node entry of the item from the netmap and return the key of the removed item.\r |
746 | \r | |
747 | Remove the node entry of the item from the Used doubly linked list of the netmap. \r | |
748 | The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node \r | |
749 | entry of the item to the Recycled doubly linked list of the netmap. If Value is not NULL,\r | |
750 | Value will point to the value of the item. It returns the key of the removed item.\r | |
751 | \r | |
752 | If Map is NULL, then ASSERT().\r | |
753 | If Item is NULL, then ASSERT().\r | |
754 | if item in not in the netmap, then ASSERT().\r | |
755 | \r | |
3e7104c2 | 756 | @param[in, out] Map The netmap to remove the item from.\r |
757 | @param[in, out] Item The item to remove.\r | |
758 | @param[out] Value The variable to receive the value if not NULL.\r | |
da1d0201 | 759 | \r |
3e7104c2 | 760 | @return The key of the removed item.\r |
da1d0201 | 761 | \r |
762 | **/\r | |
763 | VOID *\r | |
7b414b4e | 764 | EFIAPI\r |
da1d0201 | 765 | NetMapRemoveItem (\r |
3e7104c2 | 766 | IN OUT NET_MAP *Map,\r |
767 | IN OUT NET_MAP_ITEM *Item,\r | |
768 | OUT VOID **Value OPTIONAL\r | |
da1d0201 | 769 | )\r |
770 | {\r | |
771 | ASSERT ((Map != NULL) && (Item != NULL));\r | |
772 | ASSERT (NetItemInMap (Map, Item));\r | |
773 | \r | |
e48e37fc | 774 | RemoveEntryList (&Item->Link);\r |
da1d0201 | 775 | Map->Count--;\r |
e48e37fc | 776 | InsertHeadList (&Map->Recycled, &Item->Link);\r |
da1d0201 | 777 | \r |
778 | if (Value != NULL) {\r | |
779 | *Value = Item->Value;\r | |
780 | }\r | |
781 | \r | |
782 | return Item->Key;\r | |
783 | }\r | |
784 | \r | |
785 | \r | |
786 | /**\r | |
b9008c87 | 787 | Remove the first node entry on the netmap and return the key of the removed item.\r |
da1d0201 | 788 | \r |
b9008c87 | 789 | Remove the first node entry from the Used doubly linked list of the netmap. \r |
790 | The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node \r | |
791 | entry to the Recycled doubly linked list of the netmap. If parameter Value is not NULL,\r | |
792 | parameter Value will point to the value of the item. It returns the key of the removed item.\r | |
793 | \r | |
794 | If Map is NULL, then ASSERT().\r | |
795 | If the Used doubly linked list is empty, then ASSERT().\r | |
796 | \r | |
3e7104c2 | 797 | @param[in, out] Map The netmap to remove the head from.\r |
798 | @param[out] Value The variable to receive the value if not NULL.\r | |
da1d0201 | 799 | \r |
3e7104c2 | 800 | @return The key of the item removed.\r |
da1d0201 | 801 | \r |
802 | **/\r | |
803 | VOID *\r | |
7b414b4e | 804 | EFIAPI\r |
da1d0201 | 805 | NetMapRemoveHead (\r |
3e7104c2 | 806 | IN OUT NET_MAP *Map,\r |
da1d0201 | 807 | OUT VOID **Value OPTIONAL\r |
808 | )\r | |
809 | {\r | |
810 | NET_MAP_ITEM *Item;\r | |
811 | \r | |
812 | //\r | |
813 | // Often, it indicates a programming error to remove\r | |
814 | // the first entry in an empty list\r | |
815 | //\r | |
e48e37fc | 816 | ASSERT (Map && !IsListEmpty (&Map->Used));\r |
da1d0201 | 817 | \r |
818 | Item = NET_LIST_HEAD (&Map->Used, NET_MAP_ITEM, Link);\r | |
e48e37fc | 819 | RemoveEntryList (&Item->Link);\r |
da1d0201 | 820 | Map->Count--;\r |
e48e37fc | 821 | InsertHeadList (&Map->Recycled, &Item->Link);\r |
da1d0201 | 822 | \r |
823 | if (Value != NULL) {\r | |
824 | *Value = Item->Value;\r | |
825 | }\r | |
826 | \r | |
827 | return Item->Key;\r | |
828 | }\r | |
829 | \r | |
830 | \r | |
831 | /**\r | |
b9008c87 | 832 | Remove the last node entry on the netmap and return the key of the removed item.\r |
da1d0201 | 833 | \r |
b9008c87 | 834 | Remove the last node entry from the Used doubly linked list of the netmap. \r |
835 | The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node \r | |
836 | entry to the Recycled doubly linked list of the netmap. If parameter Value is not NULL,\r | |
837 | parameter Value will point to the value of the item. It returns the key of the removed item.\r | |
838 | \r | |
839 | If Map is NULL, then ASSERT().\r | |
840 | If the Used doubly linked list is empty, then ASSERT().\r | |
841 | \r | |
3e7104c2 | 842 | @param[in, out] Map The netmap to remove the tail from.\r |
843 | @param[out] Value The variable to receive the value if not NULL.\r | |
da1d0201 | 844 | \r |
3e7104c2 | 845 | @return The key of the item removed.\r |
da1d0201 | 846 | \r |
847 | **/\r | |
848 | VOID *\r | |
7b414b4e | 849 | EFIAPI\r |
da1d0201 | 850 | NetMapRemoveTail (\r |
3e7104c2 | 851 | IN OUT NET_MAP *Map,\r |
da1d0201 | 852 | OUT VOID **Value OPTIONAL\r |
853 | )\r | |
854 | {\r | |
855 | NET_MAP_ITEM *Item;\r | |
856 | \r | |
857 | //\r | |
858 | // Often, it indicates a programming error to remove\r | |
859 | // the last entry in an empty list\r | |
860 | //\r | |
e48e37fc | 861 | ASSERT (Map && !IsListEmpty (&Map->Used));\r |
da1d0201 | 862 | \r |
863 | Item = NET_LIST_TAIL (&Map->Used, NET_MAP_ITEM, Link);\r | |
e48e37fc | 864 | RemoveEntryList (&Item->Link);\r |
da1d0201 | 865 | Map->Count--;\r |
e48e37fc | 866 | InsertHeadList (&Map->Recycled, &Item->Link);\r |
da1d0201 | 867 | \r |
868 | if (Value != NULL) {\r | |
869 | *Value = Item->Value;\r | |
870 | }\r | |
871 | \r | |
872 | return Item->Key;\r | |
873 | }\r | |
874 | \r | |
875 | \r | |
876 | /**\r | |
b9008c87 | 877 | Iterate through the netmap and call CallBack for each item.\r |
878 | \r | |
879 | It will contiue the traverse if CallBack returns EFI_SUCCESS, otherwise, break\r | |
880 | from the loop. It returns the CallBack's last return value. This function is \r | |
881 | delete safe for the current item.\r | |
da1d0201 | 882 | \r |
b9008c87 | 883 | If Map is NULL, then ASSERT().\r |
884 | If CallBack is NULL, then ASSERT().\r | |
885 | \r | |
3e7104c2 | 886 | @param[in] Map The Map to iterate through.\r |
887 | @param[in] CallBack The callback function to call for each item.\r | |
888 | @param[in] Arg The opaque parameter to the callback.\r | |
da1d0201 | 889 | \r |
3e7104c2 | 890 | @retval EFI_SUCCESS There is no item in the netmap or CallBack for each item\r |
891 | return EFI_SUCCESS.\r | |
892 | @retval Others It returns the CallBack's last return value.\r | |
da1d0201 | 893 | \r |
894 | **/\r | |
895 | EFI_STATUS\r | |
7b414b4e | 896 | EFIAPI\r |
da1d0201 | 897 | NetMapIterate (\r |
898 | IN NET_MAP *Map,\r | |
899 | IN NET_MAP_CALLBACK CallBack,\r | |
900 | IN VOID *Arg\r | |
901 | )\r | |
902 | {\r | |
903 | \r | |
e48e37fc | 904 | LIST_ENTRY *Entry;\r |
905 | LIST_ENTRY *Next;\r | |
906 | LIST_ENTRY *Head;\r | |
b9008c87 | 907 | NET_MAP_ITEM *Item;\r |
908 | EFI_STATUS Result;\r | |
da1d0201 | 909 | \r |
910 | ASSERT ((Map != NULL) && (CallBack != NULL));\r | |
911 | \r | |
912 | Head = &Map->Used;\r | |
913 | \r | |
e48e37fc | 914 | if (IsListEmpty (Head)) {\r |
da1d0201 | 915 | return EFI_SUCCESS;\r |
916 | }\r | |
917 | \r | |
918 | NET_LIST_FOR_EACH_SAFE (Entry, Next, Head) {\r | |
919 | Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);\r | |
920 | Result = CallBack (Map, Item, Arg);\r | |
921 | \r | |
922 | if (EFI_ERROR (Result)) {\r | |
923 | return Result;\r | |
924 | }\r | |
925 | }\r | |
926 | \r | |
927 | return EFI_SUCCESS;\r | |
928 | }\r | |
929 | \r | |
930 | \r | |
931 | /**\r | |
932 | This is the default unload handle for all the network drivers.\r | |
933 | \r | |
b9008c87 | 934 | Disconnect the driver specified by ImageHandle from all the devices in the handle database.\r |
935 | Uninstall all the protocols installed in the driver entry point.\r | |
936 | \r | |
3e7104c2 | 937 | @param[in] ImageHandle The drivers' driver image.\r |
da1d0201 | 938 | \r |
939 | @retval EFI_SUCCESS The image is unloaded.\r | |
940 | @retval Others Failed to unload the image.\r | |
941 | \r | |
942 | **/\r | |
943 | EFI_STATUS\r | |
944 | EFIAPI\r | |
945 | NetLibDefaultUnload (\r | |
946 | IN EFI_HANDLE ImageHandle\r | |
947 | )\r | |
948 | {\r | |
949 | EFI_STATUS Status;\r | |
950 | EFI_HANDLE *DeviceHandleBuffer;\r | |
951 | UINTN DeviceHandleCount;\r | |
952 | UINTN Index;\r | |
953 | EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;\r | |
954 | EFI_COMPONENT_NAME_PROTOCOL *ComponentName;\r | |
3012ce5c | 955 | EFI_COMPONENT_NAME2_PROTOCOL *ComponentName2;\r |
da1d0201 | 956 | \r |
957 | //\r | |
958 | // Get the list of all the handles in the handle database.\r | |
959 | // If there is an error getting the list, then the unload\r | |
960 | // operation fails.\r | |
961 | //\r | |
962 | Status = gBS->LocateHandleBuffer (\r | |
963 | AllHandles,\r | |
964 | NULL,\r | |
965 | NULL,\r | |
966 | &DeviceHandleCount,\r | |
967 | &DeviceHandleBuffer\r | |
968 | );\r | |
969 | \r | |
970 | if (EFI_ERROR (Status)) {\r | |
971 | return Status;\r | |
972 | }\r | |
973 | \r | |
974 | //\r | |
975 | // Disconnect the driver specified by ImageHandle from all\r | |
976 | // the devices in the handle database.\r | |
977 | //\r | |
978 | for (Index = 0; Index < DeviceHandleCount; Index++) {\r | |
979 | Status = gBS->DisconnectController (\r | |
980 | DeviceHandleBuffer[Index],\r | |
981 | ImageHandle,\r | |
982 | NULL\r | |
983 | );\r | |
984 | }\r | |
985 | \r | |
986 | //\r | |
987 | // Uninstall all the protocols installed in the driver entry point\r | |
988 | //\r | |
989 | for (Index = 0; Index < DeviceHandleCount; Index++) {\r | |
990 | Status = gBS->HandleProtocol (\r | |
991 | DeviceHandleBuffer[Index],\r | |
992 | &gEfiDriverBindingProtocolGuid,\r | |
993 | (VOID **) &DriverBinding\r | |
994 | );\r | |
995 | \r | |
996 | if (EFI_ERROR (Status)) {\r | |
997 | continue;\r | |
998 | }\r | |
999 | \r | |
1000 | if (DriverBinding->ImageHandle != ImageHandle) {\r | |
1001 | continue;\r | |
1002 | }\r | |
1003 | \r | |
1004 | gBS->UninstallProtocolInterface (\r | |
1005 | ImageHandle,\r | |
1006 | &gEfiDriverBindingProtocolGuid,\r | |
1007 | DriverBinding\r | |
1008 | );\r | |
1009 | Status = gBS->HandleProtocol (\r | |
1010 | DeviceHandleBuffer[Index],\r | |
1011 | &gEfiComponentNameProtocolGuid,\r | |
1012 | (VOID **) &ComponentName\r | |
1013 | );\r | |
1014 | if (!EFI_ERROR (Status)) {\r | |
1015 | gBS->UninstallProtocolInterface (\r | |
1016 | ImageHandle,\r | |
1017 | &gEfiComponentNameProtocolGuid,\r | |
1018 | ComponentName\r | |
1019 | );\r | |
1020 | }\r | |
1021 | \r | |
1022 | Status = gBS->HandleProtocol (\r | |
1023 | DeviceHandleBuffer[Index],\r | |
3012ce5c | 1024 | &gEfiComponentName2ProtocolGuid,\r |
1025 | (VOID **) &ComponentName2\r | |
da1d0201 | 1026 | );\r |
da1d0201 | 1027 | if (!EFI_ERROR (Status)) {\r |
1028 | gBS->UninstallProtocolInterface (\r | |
3012ce5c | 1029 | ImageHandle,\r |
1030 | &gEfiComponentName2ProtocolGuid,\r | |
1031 | ComponentName2\r | |
1032 | );\r | |
da1d0201 | 1033 | }\r |
1034 | }\r | |
1035 | \r | |
1036 | //\r | |
1037 | // Free the buffer containing the list of handles from the handle database\r | |
1038 | //\r | |
1039 | if (DeviceHandleBuffer != NULL) {\r | |
1040 | gBS->FreePool (DeviceHandleBuffer);\r | |
1041 | }\r | |
1042 | \r | |
1043 | return EFI_SUCCESS;\r | |
1044 | }\r | |
1045 | \r | |
1046 | \r | |
1047 | \r | |
1048 | /**\r | |
1049 | Create a child of the service that is identified by ServiceBindingGuid.\r | |
b9008c87 | 1050 | \r |
1051 | Get the ServiceBinding Protocol first, then use it to create a child.\r | |
da1d0201 | 1052 | \r |
b9008c87 | 1053 | If ServiceBindingGuid is NULL, then ASSERT().\r |
1054 | If ChildHandle is NULL, then ASSERT().\r | |
1055 | \r | |
3e7104c2 | 1056 | @param[in] Controller The controller which has the service installed.\r |
1057 | @param[in] Image The image handle used to open service.\r | |
1058 | @param[in] ServiceBindingGuid The service's Guid.\r | |
8f5e6151 | 1059 | @param[in, out] ChildHandle The handle to receive the create child.\r |
da1d0201 | 1060 | \r |
1061 | @retval EFI_SUCCESS The child is successfully created.\r | |
1062 | @retval Others Failed to create the child.\r | |
1063 | \r | |
1064 | **/\r | |
1065 | EFI_STATUS\r | |
7b414b4e | 1066 | EFIAPI\r |
da1d0201 | 1067 | NetLibCreateServiceChild (\r |
1068 | IN EFI_HANDLE Controller,\r | |
1069 | IN EFI_HANDLE Image,\r | |
1070 | IN EFI_GUID *ServiceBindingGuid,\r | |
3e7104c2 | 1071 | IN OUT EFI_HANDLE *ChildHandle\r |
da1d0201 | 1072 | )\r |
1073 | {\r | |
1074 | EFI_STATUS Status;\r | |
1075 | EFI_SERVICE_BINDING_PROTOCOL *Service;\r | |
1076 | \r | |
1077 | \r | |
1078 | ASSERT ((ServiceBindingGuid != NULL) && (ChildHandle != NULL));\r | |
1079 | \r | |
1080 | //\r | |
1081 | // Get the ServiceBinding Protocol\r | |
1082 | //\r | |
1083 | Status = gBS->OpenProtocol (\r | |
1084 | Controller,\r | |
1085 | ServiceBindingGuid,\r | |
1086 | (VOID **) &Service,\r | |
1087 | Image,\r | |
1088 | Controller,\r | |
1089 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
1090 | );\r | |
1091 | \r | |
1092 | if (EFI_ERROR (Status)) {\r | |
1093 | return Status;\r | |
1094 | }\r | |
1095 | \r | |
1096 | //\r | |
1097 | // Create a child\r | |
1098 | //\r | |
1099 | Status = Service->CreateChild (Service, ChildHandle);\r | |
1100 | return Status;\r | |
1101 | }\r | |
1102 | \r | |
1103 | \r | |
1104 | /**\r | |
1105 | Destory a child of the service that is identified by ServiceBindingGuid.\r | |
b9008c87 | 1106 | \r |
1107 | Get the ServiceBinding Protocol first, then use it to destroy a child.\r | |
1108 | \r | |
1109 | If ServiceBindingGuid is NULL, then ASSERT().\r | |
1110 | \r | |
3e7104c2 | 1111 | @param[in] Controller The controller which has the service installed.\r |
1112 | @param[in] Image The image handle used to open service.\r | |
1113 | @param[in] ServiceBindingGuid The service's Guid.\r | |
8f5e6151 | 1114 | @param[in] ChildHandle The child to destory.\r |
da1d0201 | 1115 | \r |
1116 | @retval EFI_SUCCESS The child is successfully destoried.\r | |
1117 | @retval Others Failed to destory the child.\r | |
1118 | \r | |
1119 | **/\r | |
1120 | EFI_STATUS\r | |
7b414b4e | 1121 | EFIAPI\r |
da1d0201 | 1122 | NetLibDestroyServiceChild (\r |
1123 | IN EFI_HANDLE Controller,\r | |
1124 | IN EFI_HANDLE Image,\r | |
1125 | IN EFI_GUID *ServiceBindingGuid,\r | |
1126 | IN EFI_HANDLE ChildHandle\r | |
1127 | )\r | |
1128 | {\r | |
1129 | EFI_STATUS Status;\r | |
1130 | EFI_SERVICE_BINDING_PROTOCOL *Service;\r | |
1131 | \r | |
1132 | ASSERT (ServiceBindingGuid != NULL);\r | |
1133 | \r | |
1134 | //\r | |
1135 | // Get the ServiceBinding Protocol\r | |
1136 | //\r | |
1137 | Status = gBS->OpenProtocol (\r | |
1138 | Controller,\r | |
1139 | ServiceBindingGuid,\r | |
1140 | (VOID **) &Service,\r | |
1141 | Image,\r | |
1142 | Controller,\r | |
1143 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
1144 | );\r | |
1145 | \r | |
1146 | if (EFI_ERROR (Status)) {\r | |
1147 | return Status;\r | |
1148 | }\r | |
1149 | \r | |
1150 | //\r | |
1151 | // destory the child\r | |
1152 | //\r | |
1153 | Status = Service->DestroyChild (Service, ChildHandle);\r | |
1154 | return Status;\r | |
1155 | }\r | |
1156 | \r | |
1157 | \r | |
1158 | /**\r | |
1159 | Convert the mac address of the simple network protocol installed on\r | |
1160 | SnpHandle to a unicode string. Callers are responsible for freeing the\r | |
1161 | string storage.\r | |
1162 | \r | |
b9008c87 | 1163 | Get the mac address of the Simple Network protocol from the SnpHandle. Then convert\r |
1164 | the mac address into a unicode string. It takes 2 unicode characters to represent \r | |
1165 | a 1 byte binary buffer. Plus one unicode character for the null-terminator.\r | |
1166 | \r | |
1167 | \r | |
3e7104c2 | 1168 | @param[in] SnpHandle The handle where the simple network protocol is\r |
1169 | installed on.\r | |
1170 | @param[in] ImageHandle The image handle used to act as the agent handle to\r | |
1171 | get the simple network protocol.\r | |
1172 | @param[out] MacString The pointer to store the address of the string\r | |
1173 | representation of the mac address.\r | |
1174 | \r | |
1175 | @retval EFI_SUCCESS Convert the mac address a unicode string successfully.\r | |
da1d0201 | 1176 | @retval EFI_OUT_OF_RESOURCES There are not enough memory resource.\r |
3e7104c2 | 1177 | @retval Others Failed to open the simple network protocol.\r |
da1d0201 | 1178 | \r |
1179 | **/\r | |
1180 | EFI_STATUS\r | |
7b414b4e | 1181 | EFIAPI\r |
da1d0201 | 1182 | NetLibGetMacString (\r |
3e7104c2 | 1183 | IN EFI_HANDLE SnpHandle,\r |
1184 | IN EFI_HANDLE ImageHandle,\r | |
1185 | OUT CHAR16 **MacString\r | |
da1d0201 | 1186 | )\r |
1187 | {\r | |
1188 | EFI_STATUS Status;\r | |
1189 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
1190 | EFI_SIMPLE_NETWORK_MODE *Mode;\r | |
1191 | CHAR16 *MacAddress;\r | |
1192 | UINTN Index;\r | |
1193 | \r | |
1194 | *MacString = NULL;\r | |
1195 | \r | |
1196 | //\r | |
1197 | // Get the Simple Network protocol from the SnpHandle.\r | |
1198 | //\r | |
1199 | Status = gBS->OpenProtocol (\r | |
1200 | SnpHandle,\r | |
1201 | &gEfiSimpleNetworkProtocolGuid,\r | |
1202 | (VOID **) &Snp,\r | |
1203 | ImageHandle,\r | |
1204 | SnpHandle,\r | |
1205 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
1206 | );\r | |
1207 | if (EFI_ERROR (Status)) {\r | |
1208 | return Status;\r | |
1209 | }\r | |
1210 | \r | |
1211 | Mode = Snp->Mode;\r | |
1212 | \r | |
1213 | //\r | |
1214 | // It takes 2 unicode characters to represent a 1 byte binary buffer.\r | |
1215 | // Plus one unicode character for the null-terminator.\r | |
1216 | //\r | |
e48e37fc | 1217 | MacAddress = AllocatePool ((2 * Mode->HwAddressSize + 1) * sizeof (CHAR16));\r |
da1d0201 | 1218 | if (MacAddress == NULL) {\r |
1219 | return EFI_OUT_OF_RESOURCES;\r | |
1220 | }\r | |
1221 | \r | |
1222 | //\r | |
1223 | // Convert the mac address into a unicode string.\r | |
1224 | //\r | |
1225 | for (Index = 0; Index < Mode->HwAddressSize; Index++) {\r | |
ac7e320c LG |
1226 | MacAddress[Index * 2] = (CHAR16) mNetLibHexStr[(Mode->CurrentAddress.Addr[Index] >> 4) & 0x0F];\r |
1227 | MacAddress[Index * 2 + 1] = (CHAR16) mNetLibHexStr[Mode->CurrentAddress.Addr[Index] & 0x0F];\r | |
da1d0201 | 1228 | }\r |
1229 | \r | |
1230 | MacAddress[Mode->HwAddressSize * 2] = L'\0';\r | |
1231 | \r | |
1232 | *MacString = MacAddress;\r | |
1233 | \r | |
1234 | return EFI_SUCCESS;\r | |
1235 | }\r | |
1236 | \r | |
1237 | /**\r | |
1238 | Check the default address used by the IPv4 driver is static or dynamic (acquired\r | |
1239 | from DHCP).\r | |
1240 | \r | |
b9008c87 | 1241 | If the controller handle does not have the NIC Ip4 Config Protocol installed, the \r |
1242 | default address is static. If the EFI variable to save the configuration is not found,\r | |
1243 | the default address is static. Otherwise, get the result from the EFI variable which \r | |
1244 | saving the configuration.\r | |
1245 | \r | |
3e7104c2 | 1246 | @param[in] Controller The controller handle which has the NIC Ip4 Config Protocol\r |
1247 | relative with the default address to judge.\r | |
da1d0201 | 1248 | \r |
1249 | @retval TRUE If the default address is static.\r | |
1250 | @retval FALSE If the default address is acquired from DHCP.\r | |
1251 | \r | |
1252 | **/\r | |
da1d0201 | 1253 | BOOLEAN\r |
1254 | NetLibDefaultAddressIsStatic (\r | |
1255 | IN EFI_HANDLE Controller\r | |
1256 | )\r | |
1257 | {\r | |
63886849 | 1258 | EFI_STATUS Status;\r |
1259 | EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;\r | |
1260 | UINTN Len;\r | |
1261 | NIC_IP4_CONFIG_INFO *ConfigInfo;\r | |
1262 | BOOLEAN IsStatic;\r | |
1263 | EFI_STRING ConfigHdr;\r | |
1264 | EFI_STRING ConfigResp;\r | |
1265 | EFI_STRING AccessProgress;\r | |
1266 | EFI_STRING AccessResults;\r | |
1267 | EFI_STRING String;\r | |
1268 | \r | |
1269 | ConfigInfo = NULL;\r | |
1270 | ConfigHdr = NULL;\r | |
1271 | ConfigResp = NULL;\r | |
1272 | AccessProgress = NULL;\r | |
1273 | AccessResults = NULL;\r | |
1274 | IsStatic = TRUE;\r | |
1275 | \r | |
1276 | Status = gBS->LocateProtocol (\r | |
1277 | &gEfiHiiConfigRoutingProtocolGuid,\r | |
1278 | NULL,\r | |
1279 | (VOID **) &HiiConfigRouting\r | |
1280 | );\r | |
da1d0201 | 1281 | if (EFI_ERROR (Status)) {\r |
1282 | return TRUE;\r | |
1283 | }\r | |
1284 | \r | |
63886849 | 1285 | //\r |
1286 | // Construct config request string header\r | |
1287 | //\r | |
1288 | ConfigHdr = HiiConstructConfigHdr (&gEfiNicIp4ConfigVariableGuid, EFI_NIC_IP4_CONFIG_VARIABLE, Controller);\r | |
1289 | \r | |
1290 | Len = StrLen (ConfigHdr);\r | |
ce4106be | 1291 | ConfigResp = AllocateZeroPool ((Len + NIC_ITEM_CONFIG_SIZE * 2 + 100) * sizeof (CHAR16));\r |
63886849 | 1292 | if (ConfigResp == NULL) {\r |
1293 | goto ON_EXIT;\r | |
1294 | }\r | |
1295 | StrCpy (ConfigResp, ConfigHdr);\r | |
1296 | \r | |
1297 | String = ConfigResp + Len;\r | |
1298 | UnicodeSPrint (\r | |
1299 | String, \r | |
ce4106be | 1300 | (8 + 4 + 7 + 4 + 1) * sizeof (CHAR16), \r |
63886849 | 1301 | L"&OFFSET=%04X&WIDTH=%04X", \r |
1302 | OFFSET_OF (NIC_IP4_CONFIG_INFO, Source), \r | |
1303 | sizeof (UINT32)\r | |
1304 | );\r | |
1305 | \r | |
1306 | Status = HiiConfigRouting->ExtractConfig (\r | |
1307 | HiiConfigRouting,\r | |
1308 | ConfigResp,\r | |
1309 | &AccessProgress,\r | |
1310 | &AccessResults\r | |
1311 | );\r | |
1312 | if (EFI_ERROR (Status)) {\r | |
1313 | goto ON_EXIT;\r | |
da1d0201 | 1314 | }\r |
1315 | \r | |
ce4106be | 1316 | ConfigInfo = AllocateZeroPool (sizeof (NIC_ITEM_CONFIG_SIZE));\r |
da1d0201 | 1317 | if (ConfigInfo == NULL) {\r |
63886849 | 1318 | goto ON_EXIT;\r |
da1d0201 | 1319 | }\r |
1320 | \r | |
63886849 | 1321 | ConfigInfo->Source = IP4_CONFIG_SOURCE_STATIC;\r |
1322 | Len = NIC_ITEM_CONFIG_SIZE;\r | |
1323 | Status = HiiConfigRouting->ConfigToBlock (\r | |
1324 | HiiConfigRouting,\r | |
1325 | AccessResults,\r | |
1326 | (UINT8 *) ConfigInfo,\r | |
1327 | &Len,\r | |
1328 | &AccessProgress\r | |
1329 | );\r | |
da1d0201 | 1330 | if (EFI_ERROR (Status)) {\r |
1331 | goto ON_EXIT;\r | |
1332 | }\r | |
1333 | \r | |
1334 | IsStatic = (BOOLEAN) (ConfigInfo->Source == IP4_CONFIG_SOURCE_STATIC);\r | |
63886849 | 1335 | \r |
da1d0201 | 1336 | ON_EXIT:\r |
1337 | \r | |
63886849 | 1338 | if (AccessResults != NULL) {\r |
1339 | FreePool (AccessResults);\r | |
1340 | }\r | |
1341 | if (ConfigInfo != NULL) {\r | |
1342 | FreePool (ConfigInfo);\r | |
1343 | }\r | |
1344 | if (ConfigResp != NULL) {\r | |
1345 | FreePool (ConfigResp);\r | |
1346 | }\r | |
1347 | if (ConfigHdr != NULL) {\r | |
1348 | FreePool (ConfigHdr);\r | |
1349 | }\r | |
da1d0201 | 1350 | \r |
1351 | return IsStatic;\r | |
1352 | }\r | |
1353 | \r | |
1354 | /**\r | |
1355 | Create an IPv4 device path node.\r | |
b9008c87 | 1356 | \r |
1357 | The header type of IPv4 device path node is MESSAGING_DEVICE_PATH.\r | |
1358 | The header subtype of IPv4 device path node is MSG_IPv4_DP.\r | |
1359 | The length of the IPv4 device path node in bytes is 19.\r | |
1360 | Get other info from parameters to make up the whole IPv4 device path node.\r | |
da1d0201 | 1361 | \r |
3e7104c2 | 1362 | @param[in, out] Node Pointer to the IPv4 device path node.\r |
1363 | @param[in] Controller The handle where the NIC IP4 config protocol resides.\r | |
1364 | @param[in] LocalIp The local IPv4 address.\r | |
1365 | @param[in] LocalPort The local port.\r | |
1366 | @param[in] RemoteIp The remote IPv4 address.\r | |
1367 | @param[in] RemotePort The remote port.\r | |
1368 | @param[in] Protocol The protocol type in the IP header.\r | |
1369 | @param[in] UseDefaultAddress Whether this instance is using default address or not.\r | |
da1d0201 | 1370 | \r |
da1d0201 | 1371 | **/\r |
1372 | VOID\r | |
7b414b4e | 1373 | EFIAPI\r |
da1d0201 | 1374 | NetLibCreateIPv4DPathNode (\r |
1375 | IN OUT IPv4_DEVICE_PATH *Node,\r | |
1376 | IN EFI_HANDLE Controller,\r | |
1377 | IN IP4_ADDR LocalIp,\r | |
1378 | IN UINT16 LocalPort,\r | |
1379 | IN IP4_ADDR RemoteIp,\r | |
1380 | IN UINT16 RemotePort,\r | |
1381 | IN UINT16 Protocol,\r | |
1382 | IN BOOLEAN UseDefaultAddress\r | |
1383 | )\r | |
1384 | {\r | |
1385 | Node->Header.Type = MESSAGING_DEVICE_PATH;\r | |
1386 | Node->Header.SubType = MSG_IPv4_DP;\r | |
1387 | SetDevicePathNodeLength (&Node->Header, 19);\r | |
1388 | \r | |
e48e37fc | 1389 | CopyMem (&Node->LocalIpAddress, &LocalIp, sizeof (EFI_IPv4_ADDRESS));\r |
1390 | CopyMem (&Node->RemoteIpAddress, &RemoteIp, sizeof (EFI_IPv4_ADDRESS));\r | |
da1d0201 | 1391 | \r |
1392 | Node->LocalPort = LocalPort;\r | |
1393 | Node->RemotePort = RemotePort;\r | |
1394 | \r | |
1395 | Node->Protocol = Protocol;\r | |
1396 | \r | |
1397 | if (!UseDefaultAddress) {\r | |
1398 | Node->StaticIpAddress = TRUE;\r | |
1399 | } else {\r | |
1400 | Node->StaticIpAddress = NetLibDefaultAddressIsStatic (Controller);\r | |
1401 | }\r | |
1402 | }\r | |
1403 | \r | |
1404 | \r | |
1405 | /**\r | |
1406 | Find the UNDI/SNP handle from controller and protocol GUID.\r | |
b9008c87 | 1407 | \r |
da1d0201 | 1408 | For example, IP will open a MNP child to transmit/receive\r |
1409 | packets, when MNP is stopped, IP should also be stopped. IP\r | |
1410 | needs to find its own private data which is related the IP's\r | |
1411 | service binding instance that is install on UNDI/SNP handle.\r | |
1412 | Now, the controller is either a MNP or ARP child handle. But\r | |
1413 | IP opens these handle BY_DRIVER, use that info, we can get the\r | |
1414 | UNDI/SNP handle.\r | |
1415 | \r | |
3e7104c2 | 1416 | @param[in] Controller Then protocol handle to check.\r |
1417 | @param[in] ProtocolGuid The protocol that is related with the handle.\r | |
da1d0201 | 1418 | \r |
3e7104c2 | 1419 | @return The UNDI/SNP handle or NULL for errors.\r |
da1d0201 | 1420 | \r |
1421 | **/\r | |
1422 | EFI_HANDLE\r | |
7b414b4e | 1423 | EFIAPI\r |
da1d0201 | 1424 | NetLibGetNicHandle (\r |
1425 | IN EFI_HANDLE Controller,\r | |
1426 | IN EFI_GUID *ProtocolGuid\r | |
1427 | )\r | |
1428 | {\r | |
1429 | EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenBuffer;\r | |
1430 | EFI_HANDLE Handle;\r | |
1431 | EFI_STATUS Status;\r | |
1432 | UINTN OpenCount;\r | |
1433 | UINTN Index;\r | |
1434 | \r | |
1435 | Status = gBS->OpenProtocolInformation (\r | |
1436 | Controller,\r | |
1437 | ProtocolGuid,\r | |
1438 | &OpenBuffer,\r | |
1439 | &OpenCount\r | |
1440 | );\r | |
1441 | \r | |
1442 | if (EFI_ERROR (Status)) {\r | |
1443 | return NULL;\r | |
1444 | }\r | |
1445 | \r | |
1446 | Handle = NULL;\r | |
1447 | \r | |
1448 | for (Index = 0; Index < OpenCount; Index++) {\r | |
1449 | if (OpenBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) {\r | |
1450 | Handle = OpenBuffer[Index].ControllerHandle;\r | |
1451 | break;\r | |
1452 | }\r | |
1453 | }\r | |
1454 | \r | |
1455 | gBS->FreePool (OpenBuffer);\r | |
1456 | return Handle;\r | |
1457 | }\r | |
1458 | \r | |
36ee91ca | 1459 | /**\r |
1460 | Add a Deferred Procedure Call to the end of the DPC queue.\r | |
1461 | \r | |
3e7104c2 | 1462 | @param[in] DpcTpl The EFI_TPL that the DPC should be invoked.\r |
1463 | @param[in] DpcProcedure Pointer to the DPC's function.\r | |
1464 | @param[in] DpcContext Pointer to the DPC's context. Passed to DpcProcedure\r | |
1465 | when DpcProcedure is invoked.\r | |
36ee91ca | 1466 | \r |
1467 | @retval EFI_SUCCESS The DPC was queued.\r | |
3e7104c2 | 1468 | @retval EFI_INVALID_PARAMETER DpcTpl is not a valid EFI_TPL, or DpcProcedure\r |
1469 | is NULL.\r | |
36ee91ca | 1470 | @retval EFI_OUT_OF_RESOURCES There are not enough resources available to\r |
1471 | add the DPC to the queue.\r | |
1472 | \r | |
1473 | **/\r | |
1474 | EFI_STATUS\r | |
7b414b4e | 1475 | EFIAPI\r |
36ee91ca | 1476 | NetLibQueueDpc (\r |
1477 | IN EFI_TPL DpcTpl,\r | |
1478 | IN EFI_DPC_PROCEDURE DpcProcedure,\r | |
1479 | IN VOID *DpcContext OPTIONAL\r | |
1480 | )\r | |
1481 | {\r | |
1482 | return mDpc->QueueDpc (mDpc, DpcTpl, DpcProcedure, DpcContext);\r | |
1483 | }\r | |
1484 | \r | |
1485 | /**\r | |
3e7104c2 | 1486 | Dispatch the queue of DPCs. ALL DPCs that have been queued with a DpcTpl\r |
1487 | value greater than or equal to the current TPL are invoked in the order that\r | |
1488 | they were queued. DPCs with higher DpcTpl values are invoked before DPCs with\r | |
1489 | lower DpcTpl values.\r | |
36ee91ca | 1490 | \r |
1491 | @retval EFI_SUCCESS One or more DPCs were invoked.\r | |
1492 | @retval EFI_NOT_FOUND No DPCs were invoked.\r | |
1493 | \r | |
1494 | **/\r | |
1495 | EFI_STATUS\r | |
7b414b4e | 1496 | EFIAPI\r |
36ee91ca | 1497 | NetLibDispatchDpc (\r |
1498 | VOID\r | |
1499 | )\r | |
1500 | {\r | |
1501 | return mDpc->DispatchDpc(mDpc);\r | |
1502 | }\r | |
1503 | \r | |
36ee91ca | 1504 | /**\r |
1505 | The constructor function caches the pointer to DPC protocol.\r | |
1506 | \r | |
1507 | The constructor function locates DPC protocol from protocol database.\r | |
1508 | It will ASSERT() if that operation fails and it will always return EFI_SUCCESS.\r | |
1509 | \r | |
3e7104c2 | 1510 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r |
1511 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
36ee91ca | 1512 | \r |
1513 | @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r | |
1514 | \r | |
1515 | **/\r | |
1516 | EFI_STATUS\r | |
1517 | EFIAPI\r | |
1518 | NetLibConstructor (\r | |
1519 | IN EFI_HANDLE ImageHandle,\r | |
1520 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1521 | )\r | |
1522 | {\r | |
1523 | EFI_STATUS Status;\r | |
1524 | \r | |
1525 | Status = gBS->LocateProtocol (&gEfiDpcProtocolGuid, NULL, (VOID**) &mDpc);\r | |
1526 | ASSERT_EFI_ERROR (Status);\r | |
1527 | ASSERT (mDpc != NULL);\r | |
1528 | \r | |
1529 | return Status;\r | |
1530 | }\r |