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1 | /** @file | |
2 | This library provides basic function for UEFI network stack. | |
3 | ||
4 | Copyright (c) 2005 - 2008, Intel Corporation | |
5 | All rights reserved. This program and the accompanying materials | |
6 | are licensed and made available under the terms and conditions of the BSD License | |
7 | which accompanies this distribution. The full text of the license may be found at | |
8 | http://opensource.org/licenses/bsd-license.php | |
9 | ||
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | ||
13 | **/ | |
14 | ||
15 | #ifndef _NET_LIB_H_ | |
16 | #define _NET_LIB_H_ | |
17 | ||
18 | #include <Library/BaseMemoryLib.h> | |
19 | #include <Library/MemoryAllocationLib.h> | |
20 | #include <Protocol/DriverBinding.h> | |
21 | #include <Protocol/ComponentName.h> | |
22 | #include <Protocol/DriverConfiguration.h> | |
23 | #include <Protocol/DriverDiagnostics.h> | |
24 | #include <Protocol/Dpc.h> | |
25 | ||
26 | typedef UINT32 IP4_ADDR; | |
27 | typedef UINT32 TCP_SEQNO; | |
28 | typedef UINT16 TCP_PORTNO; | |
29 | ||
30 | typedef enum { | |
31 | NET_ETHER_ADDR_LEN = 6, | |
32 | NET_IFTYPE_ETHERNET = 0x01, | |
33 | ||
34 | EFI_IP_PROTO_UDP = 0x11, | |
35 | EFI_IP_PROTO_TCP = 0x06, | |
36 | EFI_IP_PROTO_ICMP = 0x01, | |
37 | ||
38 | // | |
39 | // The address classfication | |
40 | // | |
41 | IP4_ADDR_CLASSA = 1, | |
42 | IP4_ADDR_CLASSB, | |
43 | IP4_ADDR_CLASSC, | |
44 | IP4_ADDR_CLASSD, | |
45 | IP4_ADDR_CLASSE, | |
46 | ||
47 | IP4_MASK_NUM = 33 | |
48 | } IP4_CLASS_TYPE; | |
49 | ||
50 | #pragma pack(1) | |
51 | ||
52 | // | |
53 | // Ethernet head definition | |
54 | // | |
55 | typedef struct { | |
56 | UINT8 DstMac [NET_ETHER_ADDR_LEN]; | |
57 | UINT8 SrcMac [NET_ETHER_ADDR_LEN]; | |
58 | UINT16 EtherType; | |
59 | } ETHER_HEAD; | |
60 | ||
61 | ||
62 | // | |
63 | // The EFI_IP4_HEADER is hard to use because the source and | |
64 | // destination address are defined as EFI_IPv4_ADDRESS, which | |
65 | // is a structure. Two structures can't be compared or masked | |
66 | // directly. This is why there is an internal representation. | |
67 | // | |
68 | typedef struct { | |
69 | UINT8 HeadLen : 4; | |
70 | UINT8 Ver : 4; | |
71 | UINT8 Tos; | |
72 | UINT16 TotalLen; | |
73 | UINT16 Id; | |
74 | UINT16 Fragment; | |
75 | UINT8 Ttl; | |
76 | UINT8 Protocol; | |
77 | UINT16 Checksum; | |
78 | IP4_ADDR Src; | |
79 | IP4_ADDR Dst; | |
80 | } IP4_HEAD; | |
81 | ||
82 | ||
83 | // | |
84 | // ICMP head definition. ICMP message is categoried as either an error | |
85 | // message or query message. Two message types have their own head format. | |
86 | // | |
87 | typedef struct { | |
88 | UINT8 Type; | |
89 | UINT8 Code; | |
90 | UINT16 Checksum; | |
91 | } IP4_ICMP_HEAD; | |
92 | ||
93 | typedef struct { | |
94 | IP4_ICMP_HEAD Head; | |
95 | UINT32 Fourth; // 4th filed of the head, it depends on Type. | |
96 | IP4_HEAD IpHead; | |
97 | } IP4_ICMP_ERROR_HEAD; | |
98 | ||
99 | typedef struct { | |
100 | IP4_ICMP_HEAD Head; | |
101 | UINT16 Id; | |
102 | UINT16 Seq; | |
103 | } IP4_ICMP_QUERY_HEAD; | |
104 | ||
105 | ||
106 | // | |
107 | // UDP header definition | |
108 | // | |
109 | typedef struct { | |
110 | UINT16 SrcPort; | |
111 | UINT16 DstPort; | |
112 | UINT16 Length; | |
113 | UINT16 Checksum; | |
114 | } EFI_UDP4_HEADER; | |
115 | ||
116 | ||
117 | // | |
118 | // TCP header definition | |
119 | // | |
120 | typedef struct { | |
121 | TCP_PORTNO SrcPort; | |
122 | TCP_PORTNO DstPort; | |
123 | TCP_SEQNO Seq; | |
124 | TCP_SEQNO Ack; | |
125 | UINT8 Res : 4; | |
126 | UINT8 HeadLen : 4; | |
127 | UINT8 Flag; | |
128 | UINT16 Wnd; | |
129 | UINT16 Checksum; | |
130 | UINT16 Urg; | |
131 | } TCP_HEAD; | |
132 | ||
133 | #pragma pack() | |
134 | ||
135 | #define NET_MAC_EQUAL(pMac1, pMac2, Len) \ | |
136 | (CompareMem ((pMac1), (pMac2), Len) == 0) | |
137 | ||
138 | #define NET_MAC_IS_MULTICAST(Mac, BMac, Len) \ | |
139 | (((*((UINT8 *) Mac) & 0x01) == 0x01) && (!NET_MAC_EQUAL (Mac, BMac, Len))) | |
140 | ||
141 | #define NTOHL(x) (UINT32)((((UINT32) (x) & 0xff) << 24) | \ | |
142 | (((UINT32) (x) & 0xff00) << 8) | \ | |
143 | (((UINT32) (x) & 0xff0000) >> 8) | \ | |
144 | (((UINT32) (x) & 0xff000000) >> 24)) | |
145 | ||
146 | #define HTONL(x) NTOHL(x) | |
147 | ||
148 | #define NTOHS(x) (UINT16)((((UINT16) (x) & 0xff) << 8) | \ | |
149 | (((UINT16) (x) & 0xff00) >> 8)) | |
150 | ||
151 | #define HTONS(x) NTOHS(x) | |
152 | ||
153 | // | |
154 | // Test the IP's attribute, All the IPs are in host byte order. | |
155 | // | |
156 | #define IP4_IS_MULTICAST(Ip) (((Ip) & 0xF0000000) == 0xE0000000) | |
157 | #define IP4_IS_LOCAL_BROADCAST(Ip) ((Ip) == 0xFFFFFFFF) | |
158 | #define IP4_NET_EQUAL(Ip1, Ip2, NetMask) (((Ip1) & (NetMask)) == ((Ip2) & (NetMask))) | |
159 | #define IP4_IS_VALID_NETMASK(Ip) (NetGetMaskLength (Ip) != IP4_MASK_NUM) | |
160 | ||
161 | // | |
162 | // Convert the EFI_IP4_ADDRESS to plain UINT32 IP4 address. | |
163 | // | |
164 | #define EFI_IP4(EfiIpAddr) (*(IP4_ADDR *) ((EfiIpAddr).Addr)) | |
165 | #define EFI_NTOHL(EfiIp) (NTOHL (EFI_IP4 ((EfiIp)))) | |
166 | #define EFI_IP4_EQUAL(Ip1, Ip2) (CompareMem ((Ip1), (Ip2), sizeof (EFI_IPv4_ADDRESS)) == 0) | |
167 | ||
168 | /** | |
169 | Return the length of the mask. If the mask is invalid, | |
170 | return the invalid length 33, which is IP4_MASK_NUM. | |
171 | NetMask is in the host byte order. | |
172 | ||
173 | @param NetMask The netmask to get the length from | |
174 | ||
175 | @return The length of the netmask, IP4_MASK_NUM if the mask isn't | |
176 | @return supported. | |
177 | ||
178 | **/ | |
179 | INTN | |
180 | EFIAPI | |
181 | NetGetMaskLength ( | |
182 | IN IP4_ADDR Mask | |
183 | ); | |
184 | ||
185 | /** | |
186 | Return the class of the address, such as class a, b, c. | |
187 | Addr is in host byte order. | |
188 | ||
189 | @param Addr The address to get the class from | |
190 | ||
191 | @return IP address class, such as IP4_ADDR_CLASSA | |
192 | ||
193 | **/ | |
194 | INTN | |
195 | EFIAPI | |
196 | NetGetIpClass ( | |
197 | IN IP4_ADDR Addr | |
198 | ); | |
199 | ||
200 | /** | |
201 | Check whether the IP is a valid unicast address according to | |
202 | the netmask. If NetMask is zero, use the IP address's class to | |
203 | get the default mask. | |
204 | ||
205 | @param Ip The IP to check againist | |
206 | @param NetMask The mask of the IP | |
207 | ||
208 | @return TRUE if IP is a valid unicast address on the network, otherwise FALSE | |
209 | ||
210 | **/ | |
211 | BOOLEAN | |
212 | Ip4IsUnicast ( | |
213 | IN IP4_ADDR Ip, | |
214 | IN IP4_ADDR NetMask | |
215 | ); | |
216 | ||
217 | extern IP4_ADDR gIp4AllMasks [IP4_MASK_NUM]; | |
218 | ||
219 | ||
220 | extern EFI_IPv4_ADDRESS mZeroIp4Addr; | |
221 | ||
222 | #define NET_IS_DIGIT(Ch) (('0' <= (Ch)) && ((Ch) <= '9')) | |
223 | #define NET_ROUNDUP(size, unit) (((size) + (unit) - 1) & (~((unit) - 1))) | |
224 | #define NET_IS_LOWER_CASE_CHAR(Ch) (('a' <= (Ch)) && ((Ch) <= 'z')) | |
225 | #define NET_IS_UPPER_CASE_CHAR(Ch) (('A' <= (Ch)) && ((Ch) <= 'Z')) | |
226 | ||
227 | #define TICKS_PER_MS 10000U | |
228 | #define TICKS_PER_SECOND 10000000U | |
229 | ||
230 | #define NET_RANDOM(Seed) ((UINT32) ((UINT32) (Seed) * 1103515245UL + 12345) % 4294967295UL) | |
231 | ||
232 | /** | |
233 | Extract a UINT32 from a byte stream, then convert it to host | |
234 | byte order. Use this function to avoid alignment error. | |
235 | ||
236 | @param Buf The buffer to extract the UINT32. | |
237 | ||
238 | @return The UINT32 extracted. | |
239 | ||
240 | **/ | |
241 | UINT32 | |
242 | EFIAPI | |
243 | NetGetUint32 ( | |
244 | IN UINT8 *Buf | |
245 | ); | |
246 | ||
247 | /** | |
248 | Put a UINT32 to the byte stream. Convert it from host byte order | |
249 | to network byte order before putting. | |
250 | ||
251 | @param Buf The buffer to put the UINT32 | |
252 | @param Data The data to put | |
253 | ||
254 | @return None | |
255 | ||
256 | **/ | |
257 | VOID | |
258 | EFIAPI | |
259 | NetPutUint32 ( | |
260 | IN UINT8 *Buf, | |
261 | IN UINT32 Data | |
262 | ); | |
263 | ||
264 | /** | |
265 | Initialize a random seed using current time. | |
266 | ||
267 | None | |
268 | ||
269 | @return The random seed initialized with current time. | |
270 | ||
271 | **/ | |
272 | UINT32 | |
273 | EFIAPI | |
274 | NetRandomInitSeed ( | |
275 | VOID | |
276 | ); | |
277 | ||
278 | ||
279 | #define NET_LIST_USER_STRUCT(Entry, Type, Field) \ | |
280 | _CR(Entry, Type, Field) | |
281 | ||
282 | #define NET_LIST_USER_STRUCT_S(Entry, Type, Field, Sig) \ | |
283 | CR(Entry, Type, Field, Sig) | |
284 | ||
285 | // | |
286 | // Iterate through the doule linked list. It is NOT delete safe | |
287 | // | |
288 | #define NET_LIST_FOR_EACH(Entry, ListHead) \ | |
289 | for(Entry = (ListHead)->ForwardLink; Entry != (ListHead); Entry = Entry->ForwardLink) | |
290 | ||
291 | // | |
292 | // Iterate through the doule linked list. This is delete-safe. | |
293 | // Don't touch NextEntry. Also, don't use this macro if list | |
294 | // entries other than the Entry may be deleted when processing | |
295 | // the current Entry. | |
296 | // | |
297 | #define NET_LIST_FOR_EACH_SAFE(Entry, NextEntry, ListHead) \ | |
298 | for(Entry = (ListHead)->ForwardLink, NextEntry = Entry->ForwardLink; \ | |
299 | Entry != (ListHead); \ | |
300 | Entry = NextEntry, NextEntry = Entry->ForwardLink \ | |
301 | ) | |
302 | ||
303 | // | |
304 | // Make sure the list isn't empty before get the frist/last record. | |
305 | // | |
306 | #define NET_LIST_HEAD(ListHead, Type, Field) \ | |
307 | NET_LIST_USER_STRUCT((ListHead)->ForwardLink, Type, Field) | |
308 | ||
309 | #define NET_LIST_TAIL(ListHead, Type, Field) \ | |
310 | NET_LIST_USER_STRUCT((ListHead)->BackLink, Type, Field) | |
311 | ||
312 | ||
313 | /** | |
314 | Remove the first entry on the list | |
315 | ||
316 | @param Head The list header | |
317 | ||
318 | @return The entry that is removed from the list, NULL if the list is empty. | |
319 | ||
320 | **/ | |
321 | LIST_ENTRY * | |
322 | EFIAPI | |
323 | NetListRemoveHead ( | |
324 | LIST_ENTRY *Head | |
325 | ); | |
326 | ||
327 | /** | |
328 | Remove the last entry on the list | |
329 | ||
330 | @param Head The list head | |
331 | ||
332 | @return The entry that is removed from the list, NULL if the list is empty. | |
333 | ||
334 | **/ | |
335 | LIST_ENTRY * | |
336 | EFIAPI | |
337 | NetListRemoveTail ( | |
338 | LIST_ENTRY *Head | |
339 | ); | |
340 | ||
341 | /** | |
342 | Insert the NewEntry after the PrevEntry. | |
343 | ||
344 | @param PrevEntry The previous entry to insert after | |
345 | @param NewEntry The new entry to insert | |
346 | ||
347 | @return None | |
348 | ||
349 | **/ | |
350 | VOID | |
351 | EFIAPI | |
352 | NetListInsertAfter ( | |
353 | IN LIST_ENTRY *PrevEntry, | |
354 | IN LIST_ENTRY *NewEntry | |
355 | ); | |
356 | ||
357 | /** | |
358 | Insert the NewEntry before the PostEntry. | |
359 | ||
360 | @param PostEntry The entry to insert before | |
361 | @param NewEntry The new entry to insert | |
362 | ||
363 | @return None | |
364 | ||
365 | **/ | |
366 | VOID | |
367 | EFIAPI | |
368 | NetListInsertBefore ( | |
369 | IN LIST_ENTRY *PostEntry, | |
370 | IN LIST_ENTRY *NewEntry | |
371 | ); | |
372 | ||
373 | ||
374 | // | |
375 | // Object container: EFI network stack spec defines various kinds of | |
376 | // tokens. The drivers can share code to manage those objects. | |
377 | // | |
378 | typedef struct { | |
379 | LIST_ENTRY Link; | |
380 | VOID *Key; | |
381 | VOID *Value; | |
382 | } NET_MAP_ITEM; | |
383 | ||
384 | typedef struct { | |
385 | LIST_ENTRY Used; | |
386 | LIST_ENTRY Recycled; | |
387 | UINTN Count; | |
388 | } NET_MAP; | |
389 | ||
390 | #define NET_MAP_INCREAMENT 64 | |
391 | ||
392 | /** | |
393 | Initialize the netmap. Netmap is a reposity to keep the <Key, Value> pairs. | |
394 | ||
395 | @param Map The netmap to initialize | |
396 | ||
397 | @return None | |
398 | ||
399 | **/ | |
400 | VOID | |
401 | EFIAPI | |
402 | NetMapInit ( | |
403 | IN NET_MAP *Map | |
404 | ); | |
405 | ||
406 | /** | |
407 | To clean up the netmap, that is, release allocated memories. | |
408 | ||
409 | @param Map The netmap to clean up. | |
410 | ||
411 | @return None | |
412 | ||
413 | **/ | |
414 | VOID | |
415 | EFIAPI | |
416 | NetMapClean ( | |
417 | IN NET_MAP *Map | |
418 | ); | |
419 | ||
420 | /** | |
421 | Test whether the netmap is empty | |
422 | ||
423 | @param Map The net map to test | |
424 | ||
425 | @return TRUE if the netmap is empty, otherwise FALSE. | |
426 | ||
427 | **/ | |
428 | BOOLEAN | |
429 | EFIAPI | |
430 | NetMapIsEmpty ( | |
431 | IN NET_MAP *Map | |
432 | ); | |
433 | ||
434 | /** | |
435 | Return the number of the <Key, Value> pairs in the netmap. | |
436 | ||
437 | @param Map The netmap to get the entry number | |
438 | ||
439 | @return The entry number in the netmap. | |
440 | ||
441 | **/ | |
442 | UINTN | |
443 | EFIAPI | |
444 | NetMapGetCount ( | |
445 | IN NET_MAP *Map | |
446 | ); | |
447 | ||
448 | /** | |
449 | Allocate an item to save the <Key, Value> pair to the head of the netmap. | |
450 | ||
451 | @param Map The netmap to insert into | |
452 | @param Key The user's key | |
453 | @param Value The user's value for the key | |
454 | ||
455 | @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item | |
456 | @retval EFI_SUCCESS The item is inserted to the head | |
457 | ||
458 | **/ | |
459 | EFI_STATUS | |
460 | EFIAPI | |
461 | NetMapInsertHead ( | |
462 | IN NET_MAP *Map, | |
463 | IN VOID *Key, | |
464 | IN VOID *Value OPTIONAL | |
465 | ); | |
466 | ||
467 | /** | |
468 | Allocate an item to save the <Key, Value> pair to the tail of the netmap. | |
469 | ||
470 | @param Map The netmap to insert into | |
471 | @param Key The user's key | |
472 | @param Value The user's value for the key | |
473 | ||
474 | @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item | |
475 | @retval EFI_SUCCESS The item is inserted to the tail | |
476 | ||
477 | **/ | |
478 | EFI_STATUS | |
479 | EFIAPI | |
480 | NetMapInsertTail ( | |
481 | IN NET_MAP *Map, | |
482 | IN VOID *Key, | |
483 | IN VOID *Value OPTIONAL | |
484 | ); | |
485 | ||
486 | /** | |
487 | Find the key in the netmap | |
488 | ||
489 | @param Map The netmap to search within | |
490 | @param Key The key to search | |
491 | ||
492 | @return The point to the item contains the Key, or NULL if Key isn't in the map. | |
493 | ||
494 | **/ | |
495 | NET_MAP_ITEM * | |
496 | EFIAPI | |
497 | NetMapFindKey ( | |
498 | IN NET_MAP *Map, | |
499 | IN VOID *Key | |
500 | ); | |
501 | ||
502 | /** | |
503 | Remove the item from the netmap | |
504 | ||
505 | @param Map The netmap to remove the item from | |
506 | @param Item The item to remove | |
507 | @param Value The variable to receive the value if not NULL | |
508 | ||
509 | @return The key of the removed item. | |
510 | ||
511 | **/ | |
512 | VOID * | |
513 | EFIAPI | |
514 | NetMapRemoveItem ( | |
515 | IN NET_MAP *Map, | |
516 | IN NET_MAP_ITEM *Item, | |
517 | OUT VOID **Value OPTIONAL | |
518 | ); | |
519 | ||
520 | /** | |
521 | Remove the first entry on the netmap. | |
522 | ||
523 | @param Map The netmap to remove the head from | |
524 | @param Value The variable to receive the value if not NULL | |
525 | ||
526 | @return The key of the item removed | |
527 | ||
528 | **/ | |
529 | VOID * | |
530 | EFIAPI | |
531 | NetMapRemoveHead ( | |
532 | IN NET_MAP *Map, | |
533 | OUT VOID **Value OPTIONAL | |
534 | ); | |
535 | ||
536 | /** | |
537 | Remove the last entry on the netmap. | |
538 | ||
539 | @param Map The netmap to remove the tail from | |
540 | @param Value The variable to receive the value if not NULL | |
541 | ||
542 | @return The key of the item removed | |
543 | ||
544 | **/ | |
545 | VOID * | |
546 | EFIAPI | |
547 | NetMapRemoveTail ( | |
548 | IN NET_MAP *Map, | |
549 | OUT VOID **Value OPTIONAL | |
550 | ); | |
551 | ||
552 | typedef | |
553 | EFI_STATUS | |
554 | (*NET_MAP_CALLBACK) ( | |
555 | IN NET_MAP *Map, | |
556 | IN NET_MAP_ITEM *Item, | |
557 | IN VOID *Arg | |
558 | ); | |
559 | ||
560 | /** | |
561 | Iterate through the netmap and call CallBack for each item. It will | |
562 | contiue the traverse if CallBack returns EFI_SUCCESS, otherwise, break | |
563 | from the loop. It returns the CallBack's last return value. This | |
564 | function is delete safe for the current item. | |
565 | ||
566 | @param Map The Map to iterate through | |
567 | @param CallBack The callback function to call for each item. | |
568 | @param Arg The opaque parameter to the callback | |
569 | ||
570 | @return It returns the CallBack's last return value. | |
571 | ||
572 | **/ | |
573 | EFI_STATUS | |
574 | EFIAPI | |
575 | NetMapIterate ( | |
576 | IN NET_MAP *Map, | |
577 | IN NET_MAP_CALLBACK CallBack, | |
578 | IN VOID *Arg OPTIONAL | |
579 | ); | |
580 | ||
581 | ||
582 | // | |
583 | // Helper functions to implement driver binding and service binding protocols. | |
584 | // | |
585 | /** | |
586 | Create a child of the service that is identified by ServiceBindingGuid. | |
587 | ||
588 | @param ControllerHandle The controller which has the service installed. | |
589 | @param ImageHandle The image handle used to open service. | |
590 | @param ServiceBindingGuid The service's Guid. | |
591 | @param ChildHandle The handle to receive the create child | |
592 | ||
593 | @retval EFI_SUCCESS The child is successfully created. | |
594 | @retval Others Failed to create the child. | |
595 | ||
596 | **/ | |
597 | EFI_STATUS | |
598 | EFIAPI | |
599 | NetLibCreateServiceChild ( | |
600 | IN EFI_HANDLE ControllerHandle, | |
601 | IN EFI_HANDLE ImageHandle, | |
602 | IN EFI_GUID *ServiceBindingGuid, | |
603 | OUT EFI_HANDLE *ChildHandle | |
604 | ); | |
605 | ||
606 | /** | |
607 | Destory a child of the service that is identified by ServiceBindingGuid. | |
608 | ||
609 | @param ControllerHandle The controller which has the service installed. | |
610 | @param ImageHandle The image handle used to open service. | |
611 | @param ServiceBindingGuid The service's Guid. | |
612 | @param ChildHandle The child to destory | |
613 | ||
614 | @retval EFI_SUCCESS The child is successfully destoried. | |
615 | @retval Others Failed to destory the child. | |
616 | ||
617 | **/ | |
618 | EFI_STATUS | |
619 | EFIAPI | |
620 | NetLibDestroyServiceChild ( | |
621 | IN EFI_HANDLE ControllerHandle, | |
622 | IN EFI_HANDLE ImageHandle, | |
623 | IN EFI_GUID *ServiceBindingGuid, | |
624 | IN EFI_HANDLE ChildHandle | |
625 | ); | |
626 | ||
627 | /** | |
628 | Convert the mac address of the simple network protocol installed on | |
629 | SnpHandle to a unicode string. Callers are responsible for freeing the | |
630 | string storage. | |
631 | ||
632 | @param SnpHandle The handle where the simple network protocol is | |
633 | installed on. | |
634 | @param ImageHandle The image handle used to act as the agent handle to | |
635 | get the simple network protocol. | |
636 | @param MacString The pointer to store the address of the string | |
637 | representation of the mac address. | |
638 | ||
639 | @retval EFI_OUT_OF_RESOURCES There are not enough memory resource. | |
640 | @retval other Failed to open the simple network protocol. | |
641 | ||
642 | **/ | |
643 | EFI_STATUS | |
644 | EFIAPI | |
645 | NetLibGetMacString ( | |
646 | IN EFI_HANDLE SnpHandle, | |
647 | IN EFI_HANDLE ImageHandle, | |
648 | IN OUT CHAR16 **MacString | |
649 | ); | |
650 | ||
651 | /** | |
652 | Create an IPv4 device path node. | |
653 | ||
654 | @param Node Pointer to the IPv4 device path node. | |
655 | @param Controller The handle where the NIC IP4 config protocol resides. | |
656 | @param LocalIp The local IPv4 address. | |
657 | @param LocalPort The local port. | |
658 | @param RemoteIp The remote IPv4 address. | |
659 | @param RemotePort The remote port. | |
660 | @param Protocol The protocol type in the IP header. | |
661 | @param UseDefaultAddress Whether this instance is using default address or not. | |
662 | ||
663 | @retval None | |
664 | **/ | |
665 | VOID | |
666 | EFIAPI | |
667 | NetLibCreateIPv4DPathNode ( | |
668 | IN OUT IPv4_DEVICE_PATH *Node, | |
669 | IN EFI_HANDLE Controller, | |
670 | IN IP4_ADDR LocalIp, | |
671 | IN UINT16 LocalPort, | |
672 | IN IP4_ADDR RemoteIp, | |
673 | IN UINT16 RemotePort, | |
674 | IN UINT16 Protocol, | |
675 | IN BOOLEAN UseDefaultAddress | |
676 | ); | |
677 | ||
678 | /** | |
679 | Find the UNDI/SNP handle from controller and protocol GUID. | |
680 | For example, IP will open a MNP child to transmit/receive | |
681 | packets, when MNP is stopped, IP should also be stopped. IP | |
682 | needs to find its own private data which is related the IP's | |
683 | service binding instance that is install on UNDI/SNP handle. | |
684 | Now, the controller is either a MNP or ARP child handle. But | |
685 | IP opens these handle BY_DRIVER, use that info, we can get the | |
686 | UNDI/SNP handle. | |
687 | ||
688 | @param Controller Then protocol handle to check | |
689 | @param ProtocolGuid The protocol that is related with the handle. | |
690 | ||
691 | @return The UNDI/SNP handle or NULL. | |
692 | ||
693 | **/ | |
694 | EFI_HANDLE | |
695 | EFIAPI | |
696 | NetLibGetNicHandle ( | |
697 | IN EFI_HANDLE Controller, | |
698 | IN EFI_GUID *ProtocolGuid | |
699 | ); | |
700 | ||
701 | /** | |
702 | Add a Deferred Procedure Call to the end of the DPC queue. | |
703 | ||
704 | @param DpcTpl The EFI_TPL that the DPC should be invoked. | |
705 | @param DpcProcedure Pointer to the DPC's function. | |
706 | @param DpcContext Pointer to the DPC's context. Passed to DpcProcedure | |
707 | when DpcProcedure is invoked. | |
708 | ||
709 | @retval EFI_SUCCESS The DPC was queued. | |
710 | @retval EFI_INVALID_PARAMETER DpcTpl is not a valid EFI_TPL. | |
711 | DpcProcedure is NULL. | |
712 | @retval EFI_OUT_OF_RESOURCES There are not enough resources available to | |
713 | add the DPC to the queue. | |
714 | ||
715 | **/ | |
716 | EFI_STATUS | |
717 | EFIAPI | |
718 | NetLibQueueDpc ( | |
719 | IN EFI_TPL DpcTpl, | |
720 | IN EFI_DPC_PROCEDURE DpcProcedure, | |
721 | IN VOID *DpcContext OPTIONAL | |
722 | ); | |
723 | ||
724 | /** | |
725 | Add a Deferred Procedure Call to the end of the DPC queue. | |
726 | ||
727 | @retval EFI_SUCCESS One or more DPCs were invoked. | |
728 | @retval EFI_NOT_FOUND No DPCs were invoked. | |
729 | ||
730 | **/ | |
731 | EFI_STATUS | |
732 | EFIAPI | |
733 | NetLibDispatchDpc ( | |
734 | VOID | |
735 | ); | |
736 | ||
737 | /** | |
738 | This is the default unload handle for all the network drivers. | |
739 | ||
740 | @param ImageHandle The drivers' driver image. | |
741 | ||
742 | @retval EFI_SUCCESS The image is unloaded. | |
743 | @retval Others Failed to unload the image. | |
744 | ||
745 | **/ | |
746 | EFI_STATUS | |
747 | EFIAPI | |
748 | NetLibDefaultUnload ( | |
749 | IN EFI_HANDLE ImageHandle | |
750 | ); | |
751 | ||
752 | typedef enum { | |
753 | // | |
754 | //Various signatures | |
755 | // | |
756 | NET_BUF_SIGNATURE = EFI_SIGNATURE_32 ('n', 'b', 'u', 'f'), | |
757 | NET_VECTOR_SIGNATURE = EFI_SIGNATURE_32 ('n', 'v', 'e', 'c'), | |
758 | NET_QUE_SIGNATURE = EFI_SIGNATURE_32 ('n', 'b', 'q', 'u'), | |
759 | ||
760 | ||
761 | NET_PROTO_DATA = 64, // Opaque buffer for protocols | |
762 | NET_BUF_HEAD = 1, // Trim or allocate space from head | |
763 | NET_BUF_TAIL = 0, // Trim or allocate space from tail | |
764 | NET_VECTOR_OWN_FIRST = 0x01 // We allocated the 1st block in the vector | |
765 | } NET_SIGNATURE_TYPE; | |
766 | ||
767 | #define NET_CHECK_SIGNATURE(PData, SIGNATURE) \ | |
768 | ASSERT (((PData) != NULL) && ((PData)->Signature == (SIGNATURE))) | |
769 | ||
770 | #define NET_SWAP_SHORT(Value) \ | |
771 | ((((Value) & 0xff) << 8) | (((Value) >> 8) & 0xff)) | |
772 | ||
773 | // | |
774 | // Single memory block in the vector. | |
775 | // | |
776 | typedef struct { | |
777 | UINT32 Len; // The block's length | |
778 | UINT8 *Bulk; // The block's Data | |
779 | } NET_BLOCK; | |
780 | ||
781 | typedef VOID (*NET_VECTOR_EXT_FREE) (VOID *Arg); | |
782 | ||
783 | // | |
784 | //NET_VECTOR contains several blocks to hold all packet's | |
785 | //fragments and other house-keeping stuff for sharing. It | |
786 | //doesn't specify the where actual packet fragment begins. | |
787 | // | |
788 | typedef struct { | |
789 | UINT32 Signature; | |
790 | INTN RefCnt; // Reference count to share NET_VECTOR. | |
791 | NET_VECTOR_EXT_FREE Free; // external function to free NET_VECTOR | |
792 | VOID *Arg; // opeque argument to Free | |
793 | UINT32 Flag; // Flags, NET_VECTOR_OWN_FIRST | |
794 | UINT32 Len; // Total length of the assocated BLOCKs | |
795 | ||
796 | UINT32 BlockNum; | |
797 | NET_BLOCK Block[1]; | |
798 | } NET_VECTOR; | |
799 | ||
800 | // | |
801 | //NET_BLOCK_OP operate on the NET_BLOCK, It specifies | |
802 | //where the actual fragment begins and where it ends | |
803 | // | |
804 | typedef struct { | |
805 | UINT8 *BlockHead; // Block's head, or the smallest valid Head | |
806 | UINT8 *BlockTail; // Block's tail. BlockTail-BlockHead=block length | |
807 | UINT8 *Head; // 1st byte of the data in the block | |
808 | UINT8 *Tail; // Tail of the data in the block, Tail-Head=Size | |
809 | UINT32 Size; // The size of the data | |
810 | } NET_BLOCK_OP; | |
811 | ||
812 | ||
813 | // | |
814 | //NET_BUF is the buffer manage structure used by the | |
815 | //network stack. Every network packet may be fragmented, | |
816 | //and contains multiple fragments. The Vector points to | |
817 | //memory blocks used by the each fragment, and BlockOp | |
818 | //specifies where each fragment begins and ends. | |
819 | // | |
820 | //It also contains a opaque area for protocol to store | |
821 | //per-packet informations. Protocol must be caution not | |
822 | //to overwrite the members after that. | |
823 | // | |
824 | typedef struct { | |
825 | UINT32 Signature; | |
826 | INTN RefCnt; | |
827 | LIST_ENTRY List; // The List this NET_BUF is on | |
828 | ||
829 | IP4_HEAD *Ip; // Network layer header, for fast access | |
830 | TCP_HEAD *Tcp; // Transport layer header, for fast access | |
831 | UINT8 ProtoData [NET_PROTO_DATA]; //Protocol specific data | |
832 | ||
833 | NET_VECTOR *Vector; // The vector containing the packet | |
834 | ||
835 | UINT32 BlockOpNum; // Total number of BlockOp in the buffer | |
836 | UINT32 TotalSize; // Total size of the actual packet | |
837 | NET_BLOCK_OP BlockOp[1]; // Specify the position of actual packet | |
838 | } NET_BUF; | |
839 | ||
840 | ||
841 | // | |
842 | //A queue of NET_BUFs, It is just a thin extension of | |
843 | //NET_BUF functions. | |
844 | // | |
845 | typedef struct { | |
846 | UINT32 Signature; | |
847 | INTN RefCnt; | |
848 | LIST_ENTRY List; // The List this buffer queue is on | |
849 | ||
850 | LIST_ENTRY BufList; // list of queued buffers | |
851 | UINT32 BufSize; // total length of DATA in the buffers | |
852 | UINT32 BufNum; // total number of buffers on the chain | |
853 | } NET_BUF_QUEUE; | |
854 | ||
855 | // | |
856 | // Pseudo header for TCP and UDP checksum | |
857 | // | |
858 | #pragma pack(1) | |
859 | typedef struct { | |
860 | IP4_ADDR SrcIp; | |
861 | IP4_ADDR DstIp; | |
862 | UINT8 Reserved; | |
863 | UINT8 Protocol; | |
864 | UINT16 Len; | |
865 | } NET_PSEUDO_HDR; | |
866 | #pragma pack() | |
867 | ||
868 | // | |
869 | // The fragment entry table used in network interfaces. This is | |
870 | // the same as NET_BLOCK now. Use two different to distinguish | |
871 | // the two in case that NET_BLOCK be enhanced later. | |
872 | // | |
873 | typedef struct { | |
874 | UINT32 Len; | |
875 | UINT8 *Bulk; | |
876 | } NET_FRAGMENT; | |
877 | ||
878 | #define NET_GET_REF(PData) ((PData)->RefCnt++) | |
879 | #define NET_PUT_REF(PData) ((PData)->RefCnt--) | |
880 | #define NETBUF_FROM_PROTODATA(Info) _CR((Info), NET_BUF, ProtoData) | |
881 | ||
882 | #define NET_BUF_SHARED(Buf) \ | |
883 | (((Buf)->RefCnt > 1) || ((Buf)->Vector->RefCnt > 1)) | |
884 | ||
885 | #define NET_VECTOR_SIZE(BlockNum) \ | |
886 | (sizeof (NET_VECTOR) + ((BlockNum) - 1) * sizeof (NET_BLOCK)) | |
887 | ||
888 | #define NET_BUF_SIZE(BlockOpNum) \ | |
889 | (sizeof (NET_BUF) + ((BlockOpNum) - 1) * sizeof (NET_BLOCK_OP)) | |
890 | ||
891 | #define NET_HEADSPACE(BlockOp) \ | |
892 | (UINTN)((BlockOp)->Head - (BlockOp)->BlockHead) | |
893 | ||
894 | #define NET_TAILSPACE(BlockOp) \ | |
895 | (UINTN)((BlockOp)->BlockTail - (BlockOp)->Tail) | |
896 | ||
897 | /** | |
898 | Allocate a single block NET_BUF. Upon allocation, all the | |
899 | free space is in the tail room. | |
900 | ||
901 | @param Len The length of the block. | |
902 | ||
903 | @retval * Pointer to the allocated NET_BUF. If NULL the | |
904 | allocation failed due to resource limit. | |
905 | ||
906 | **/ | |
907 | NET_BUF * | |
908 | EFIAPI | |
909 | NetbufAlloc ( | |
910 | IN UINT32 Len | |
911 | ); | |
912 | ||
913 | /** | |
914 | Free the buffer and its associated NET_VECTOR. | |
915 | ||
916 | @param Nbuf Pointer to the NET_BUF to be freed. | |
917 | ||
918 | @return None. | |
919 | ||
920 | **/ | |
921 | VOID | |
922 | EFIAPI | |
923 | NetbufFree ( | |
924 | IN NET_BUF *Nbuf | |
925 | ); | |
926 | ||
927 | /** | |
928 | Get the position of some byte in the net buffer. This can be used | |
929 | to, for example, retrieve the IP header in the packet. It also | |
930 | returns the fragment that contains the byte which is used mainly by | |
931 | the buffer implementation itself. | |
932 | ||
933 | @param Nbuf Pointer to the net buffer. | |
934 | @param Offset The index or offset of the byte | |
935 | @param Index Index of the fragment that contains the block | |
936 | ||
937 | @retval * Pointer to the nth byte of data in the net buffer. | |
938 | If NULL, there is no such data in the net buffer. | |
939 | ||
940 | **/ | |
941 | UINT8 * | |
942 | EFIAPI | |
943 | NetbufGetByte ( | |
944 | IN NET_BUF *Nbuf, | |
945 | IN UINT32 Offset, | |
946 | OUT UINT32 *Index OPTIONAL | |
947 | ); | |
948 | ||
949 | /** | |
950 | Create a copy of NET_BUF that share the associated NET_DATA. | |
951 | ||
952 | @param Nbuf Pointer to the net buffer to be cloned. | |
953 | ||
954 | @retval * Pointer to the cloned net buffer. | |
955 | ||
956 | **/ | |
957 | NET_BUF * | |
958 | EFIAPI | |
959 | NetbufClone ( | |
960 | IN NET_BUF *Nbuf | |
961 | ); | |
962 | ||
963 | /** | |
964 | Create a duplicated copy of Nbuf, data is copied. Also leave some | |
965 | head space before the data. | |
966 | ||
967 | @param Nbuf Pointer to the net buffer to be cloned. | |
968 | @param Duplicate Pointer to the net buffer to duplicate to, if NULL | |
969 | a new net buffer is allocated. | |
970 | @param HeadSpace Length of the head space to reserve | |
971 | ||
972 | @retval * Pointer to the duplicated net buffer. | |
973 | ||
974 | **/ | |
975 | NET_BUF * | |
976 | EFIAPI | |
977 | NetbufDuplicate ( | |
978 | IN NET_BUF *Nbuf, | |
979 | IN NET_BUF *Duplicate OPTIONAL, | |
980 | IN UINT32 HeadSpace | |
981 | ); | |
982 | ||
983 | /** | |
984 | Create a NET_BUF structure which contains Len byte data of | |
985 | Nbuf starting from Offset. A new NET_BUF structure will be | |
986 | created but the associated data in NET_VECTOR is shared. | |
987 | This function exists to do IP packet fragmentation. | |
988 | ||
989 | @param Nbuf Pointer to the net buffer to be cloned. | |
990 | @param Offset Starting point of the data to be included in new | |
991 | buffer. | |
992 | @param Len How many data to include in new data | |
993 | @param HeadSpace How many bytes of head space to reserve for | |
994 | protocol header | |
995 | ||
996 | @retval * Pointer to the cloned net buffer. | |
997 | ||
998 | **/ | |
999 | NET_BUF * | |
1000 | EFIAPI | |
1001 | NetbufGetFragment ( | |
1002 | IN NET_BUF *Nbuf, | |
1003 | IN UINT32 Offset, | |
1004 | IN UINT32 Len, | |
1005 | IN UINT32 HeadSpace | |
1006 | ); | |
1007 | ||
1008 | /** | |
1009 | Reserve some space in the header room of the buffer. | |
1010 | Upon allocation, all the space are in the tail room | |
1011 | of the buffer. Call this function to move some space | |
1012 | to the header room. This function is quite limited in | |
1013 | that it can only reserver space from the first block | |
1014 | of an empty NET_BUF not built from the external. But | |
1015 | it should be enough for the network stack. | |
1016 | ||
1017 | @param Nbuf Pointer to the net buffer. | |
1018 | @param Len The length of buffer to be reserverd. | |
1019 | ||
1020 | @return None. | |
1021 | ||
1022 | **/ | |
1023 | VOID | |
1024 | EFIAPI | |
1025 | NetbufReserve ( | |
1026 | IN NET_BUF *Nbuf, | |
1027 | IN UINT32 Len | |
1028 | ); | |
1029 | ||
1030 | /** | |
1031 | Allocate some space from the header or tail of the buffer. | |
1032 | ||
1033 | @param Nbuf Pointer to the net buffer. | |
1034 | @param Len The length of the buffer to be allocated. | |
1035 | @param FromHead The flag to indicate whether reserve the data from | |
1036 | head or tail. TRUE for from head, and FALSE for | |
1037 | from tail. | |
1038 | ||
1039 | @retval * Pointer to the first byte of the allocated buffer. | |
1040 | ||
1041 | **/ | |
1042 | UINT8 * | |
1043 | EFIAPI | |
1044 | NetbufAllocSpace ( | |
1045 | IN NET_BUF *Nbuf, | |
1046 | IN UINT32 Len, | |
1047 | IN BOOLEAN FromHead | |
1048 | ); | |
1049 | ||
1050 | /** | |
1051 | Trim some data from the header or tail of the buffer. | |
1052 | ||
1053 | @param Nbuf Pointer to the net buffer. | |
1054 | @param Len The length of the data to be trimmed. | |
1055 | @param FromHead The flag to indicate whether trim data from head or | |
1056 | tail. TRUE for from head, and FALSE for from tail. | |
1057 | ||
1058 | @retval UINTN Length of the actually trimmed data. | |
1059 | ||
1060 | **/ | |
1061 | UINT32 | |
1062 | EFIAPI | |
1063 | NetbufTrim ( | |
1064 | IN NET_BUF *Nbuf, | |
1065 | IN UINT32 Len, | |
1066 | IN BOOLEAN FromHead | |
1067 | ); | |
1068 | ||
1069 | /** | |
1070 | Copy the data from the specific offset to the destination. | |
1071 | ||
1072 | @param Nbuf Pointer to the net buffer. | |
1073 | @param Offset The sequence number of the first byte to copy. | |
1074 | @param Len Length of the data to copy. | |
1075 | @param Dest The destination of the data to copy to. | |
1076 | ||
1077 | @retval UINTN The length of the copied data. | |
1078 | ||
1079 | **/ | |
1080 | UINT32 | |
1081 | EFIAPI | |
1082 | NetbufCopy ( | |
1083 | IN NET_BUF *Nbuf, | |
1084 | IN UINT32 Offset, | |
1085 | IN UINT32 Len, | |
1086 | IN UINT8 *Dest | |
1087 | ); | |
1088 | ||
1089 | /** | |
1090 | Build a NET_BUF from external blocks. | |
1091 | ||
1092 | @param ExtFragment Pointer to the data block. | |
1093 | @param ExtNum The number of the data block. | |
1094 | @param HeadSpace The head space to be reserved. | |
1095 | @param HeadLen The length of the protocol header, This function | |
1096 | will pull that number of data into a linear block. | |
1097 | @param ExtFree Pointer to the caller provided free function. | |
1098 | @param Arg The argument passed to ExtFree when ExtFree is | |
1099 | called. | |
1100 | ||
1101 | @retval * Pointer to the net buffer built from the data | |
1102 | blocks. | |
1103 | ||
1104 | **/ | |
1105 | NET_BUF * | |
1106 | EFIAPI | |
1107 | NetbufFromExt ( | |
1108 | IN NET_FRAGMENT *ExtFragment, | |
1109 | IN UINT32 ExtNum, | |
1110 | IN UINT32 HeadSpace, | |
1111 | IN UINT32 HeadLen, | |
1112 | IN NET_VECTOR_EXT_FREE ExtFree, | |
1113 | IN VOID *Arg OPTIONAL | |
1114 | ); | |
1115 | ||
1116 | /** | |
1117 | Build a fragment table to contain the fragments in the | |
1118 | buffer. This is the opposite of the NetbufFromExt. | |
1119 | ||
1120 | @param Nbuf Point to the net buffer | |
1121 | @param ExtFragment Pointer to the data block. | |
1122 | @param ExtNum The number of the data block. | |
1123 | ||
1124 | @retval EFI_BUFFER_TOO_SMALL The number of non-empty block is bigger than ExtNum | |
1125 | @retval EFI_SUCCESS Fragment table built. | |
1126 | ||
1127 | **/ | |
1128 | EFI_STATUS | |
1129 | EFIAPI | |
1130 | NetbufBuildExt ( | |
1131 | IN NET_BUF *Nbuf, | |
1132 | IN NET_FRAGMENT *ExtFragment, | |
1133 | IN UINT32 *ExtNum | |
1134 | ); | |
1135 | ||
1136 | /** | |
1137 | Build a NET_BUF from a list of NET_BUF. | |
1138 | ||
1139 | @param BufList A List of NET_BUF. | |
1140 | @param HeadSpace The head space to be reserved. | |
1141 | @param HeaderLen The length of the protocol header, This function | |
1142 | will pull that number of data into a linear block. | |
1143 | @param ExtFree Pointer to the caller provided free function. | |
1144 | @param Arg The argument passed to ExtFree when ExtFree is | |
1145 | called. | |
1146 | ||
1147 | @retval * Pointer to the net buffer built from the data | |
1148 | blocks. | |
1149 | ||
1150 | **/ | |
1151 | NET_BUF * | |
1152 | EFIAPI | |
1153 | NetbufFromBufList ( | |
1154 | IN LIST_ENTRY *BufList, | |
1155 | IN UINT32 HeadSpace, | |
1156 | IN UINT32 HeaderLen, | |
1157 | IN NET_VECTOR_EXT_FREE ExtFree, | |
1158 | IN VOID *Arg OPTIONAL | |
1159 | ); | |
1160 | ||
1161 | /** | |
1162 | Free a list of net buffers. | |
1163 | ||
1164 | @param Head Pointer to the head of linked net buffers. | |
1165 | ||
1166 | @return None. | |
1167 | ||
1168 | **/ | |
1169 | VOID | |
1170 | EFIAPI | |
1171 | NetbufFreeList ( | |
1172 | IN LIST_ENTRY *Head | |
1173 | ); | |
1174 | ||
1175 | /** | |
1176 | Initiate the net buffer queue. | |
1177 | ||
1178 | @param NbufQue Pointer to the net buffer queue to be initiated. | |
1179 | ||
1180 | @return None. | |
1181 | ||
1182 | **/ | |
1183 | VOID | |
1184 | EFIAPI | |
1185 | NetbufQueInit ( | |
1186 | IN NET_BUF_QUEUE *NbufQue | |
1187 | ); | |
1188 | ||
1189 | /** | |
1190 | Allocate an initialized net buffer queue. | |
1191 | ||
1192 | None. | |
1193 | ||
1194 | @retval * Pointer to the allocated net buffer queue. | |
1195 | ||
1196 | **/ | |
1197 | NET_BUF_QUEUE * | |
1198 | EFIAPI | |
1199 | NetbufQueAlloc ( | |
1200 | VOID | |
1201 | ); | |
1202 | ||
1203 | /** | |
1204 | Free a net buffer queue. | |
1205 | ||
1206 | @param NbufQue Poitner to the net buffer queue to be freed. | |
1207 | ||
1208 | @return None. | |
1209 | ||
1210 | **/ | |
1211 | VOID | |
1212 | EFIAPI | |
1213 | NetbufQueFree ( | |
1214 | IN NET_BUF_QUEUE *NbufQue | |
1215 | ); | |
1216 | ||
1217 | /** | |
1218 | Remove a net buffer from head in the specific queue. | |
1219 | ||
1220 | @param NbufQue Pointer to the net buffer queue. | |
1221 | ||
1222 | @retval * Pointer to the net buffer removed from the specific | |
1223 | queue. | |
1224 | ||
1225 | **/ | |
1226 | NET_BUF * | |
1227 | EFIAPI | |
1228 | NetbufQueRemove ( | |
1229 | IN NET_BUF_QUEUE *NbufQue | |
1230 | ); | |
1231 | ||
1232 | /** | |
1233 | Append a buffer to the end of the queue. | |
1234 | ||
1235 | @param NbufQue Pointer to the net buffer queue. | |
1236 | @param Nbuf Pointer to the net buffer to be appended. | |
1237 | ||
1238 | @return None. | |
1239 | ||
1240 | **/ | |
1241 | VOID | |
1242 | EFIAPI | |
1243 | NetbufQueAppend ( | |
1244 | IN NET_BUF_QUEUE *NbufQue, | |
1245 | IN NET_BUF *Nbuf | |
1246 | ); | |
1247 | ||
1248 | /** | |
1249 | Copy some data from the buffer queue to the destination. | |
1250 | ||
1251 | @param NbufQue Pointer to the net buffer queue. | |
1252 | @param Offset The sequence number of the first byte to copy. | |
1253 | @param Len Length of the data to copy. | |
1254 | @param Dest The destination of the data to copy to. | |
1255 | ||
1256 | @retval UINTN The length of the copied data. | |
1257 | ||
1258 | **/ | |
1259 | UINT32 | |
1260 | EFIAPI | |
1261 | NetbufQueCopy ( | |
1262 | IN NET_BUF_QUEUE *NbufQue, | |
1263 | IN UINT32 Offset, | |
1264 | IN UINT32 Len, | |
1265 | IN UINT8 *Dest | |
1266 | ); | |
1267 | ||
1268 | /** | |
1269 | Trim some data from the queue header, release the buffer if | |
1270 | whole buffer is trimmed. | |
1271 | ||
1272 | @param NbufQue Pointer to the net buffer queue. | |
1273 | @param Len Length of the data to trim. | |
1274 | ||
1275 | @retval UINTN The length of the data trimmed. | |
1276 | ||
1277 | **/ | |
1278 | UINT32 | |
1279 | EFIAPI | |
1280 | NetbufQueTrim ( | |
1281 | IN NET_BUF_QUEUE *NbufQue, | |
1282 | IN UINT32 Len | |
1283 | ); | |
1284 | ||
1285 | ||
1286 | /** | |
1287 | Flush the net buffer queue. | |
1288 | ||
1289 | @param NbufQue Pointer to the queue to be flushed. | |
1290 | ||
1291 | @return None. | |
1292 | ||
1293 | **/ | |
1294 | VOID | |
1295 | EFIAPI | |
1296 | NetbufQueFlush ( | |
1297 | IN NET_BUF_QUEUE *NbufQue | |
1298 | ); | |
1299 | ||
1300 | /** | |
1301 | Compute checksum for a bulk of data. | |
1302 | ||
1303 | @param Bulk Pointer to the data. | |
1304 | @param Len Length of the data, in bytes. | |
1305 | ||
1306 | @retval UINT16 The computed checksum. | |
1307 | ||
1308 | **/ | |
1309 | UINT16 | |
1310 | EFIAPI | |
1311 | NetblockChecksum ( | |
1312 | IN UINT8 *Bulk, | |
1313 | IN UINT32 Len | |
1314 | ); | |
1315 | ||
1316 | /** | |
1317 | Add two checksums. | |
1318 | ||
1319 | @param Checksum1 The first checksum to be added. | |
1320 | @param Checksum2 The second checksum to be added. | |
1321 | ||
1322 | @retval UINT16 The new checksum. | |
1323 | ||
1324 | **/ | |
1325 | UINT16 | |
1326 | EFIAPI | |
1327 | NetAddChecksum ( | |
1328 | IN UINT16 Checksum1, | |
1329 | IN UINT16 Checksum2 | |
1330 | ); | |
1331 | ||
1332 | /** | |
1333 | Compute the checksum for a NET_BUF. | |
1334 | ||
1335 | @param Nbuf Pointer to the net buffer. | |
1336 | ||
1337 | @retval UINT16 The computed checksum. | |
1338 | ||
1339 | **/ | |
1340 | UINT16 | |
1341 | EFIAPI | |
1342 | NetbufChecksum ( | |
1343 | IN NET_BUF *Nbuf | |
1344 | ); | |
1345 | ||
1346 | /** | |
1347 | Compute the checksum for TCP/UDP pseudo header. | |
1348 | Src, Dst are in network byte order. and Len is | |
1349 | in host byte order. | |
1350 | ||
1351 | @param Src The source address of the packet. | |
1352 | @param Dst The destination address of the packet. | |
1353 | @param Proto The protocol type of the packet. | |
1354 | @param Len The length of the packet. | |
1355 | ||
1356 | @retval UINT16 The computed checksum. | |
1357 | ||
1358 | **/ | |
1359 | UINT16 | |
1360 | EFIAPI | |
1361 | NetPseudoHeadChecksum ( | |
1362 | IN IP4_ADDR Src, | |
1363 | IN IP4_ADDR Dst, | |
1364 | IN UINT8 Proto, | |
1365 | IN UINT16 Len | |
1366 | ); | |
1367 | ||
1368 | #endif |