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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
14fa93cd SJ |
2 | #ifndef __NITROX_REQ_H |
3 | #define __NITROX_REQ_H | |
4 | ||
5 | #include <linux/dma-mapping.h> | |
6 | #include <crypto/aes.h> | |
7 | ||
8 | #include "nitrox_dev.h" | |
9 | ||
4bede34c | 10 | #define PENDING_SIG 0xFFFFFFFFFFFFFFFFUL |
c9613335 | 11 | #define PRIO 4001 |
4bede34c | 12 | |
14fa93cd SJ |
13 | /** |
14 | * struct gphdr - General purpose Header | |
15 | * @param0: first parameter. | |
16 | * @param1: second parameter. | |
17 | * @param2: third parameter. | |
18 | * @param3: fourth parameter. | |
19 | * | |
20 | * Params tell the iv and enc/dec data offsets. | |
21 | */ | |
22 | struct gphdr { | |
23 | __be16 param0; | |
24 | __be16 param1; | |
25 | __be16 param2; | |
26 | __be16 param3; | |
27 | }; | |
28 | ||
29 | /** | |
30 | * struct se_req_ctrl - SE request information. | |
31 | * @arg: Minor number of the opcode | |
32 | * @ctxc: Context control. | |
33 | * @unca: Uncertainity enabled. | |
34 | * @info: Additional information for SE cores. | |
35 | * @ctxl: Context length in bytes. | |
36 | * @uddl: User defined data length | |
37 | */ | |
38 | union se_req_ctrl { | |
39 | u64 value; | |
40 | struct { | |
41 | u64 raz : 22; | |
42 | u64 arg : 8; | |
43 | u64 ctxc : 2; | |
44 | u64 unca : 1; | |
45 | u64 info : 3; | |
46 | u64 unc : 8; | |
47 | u64 ctxl : 12; | |
48 | u64 uddl : 8; | |
49 | } s; | |
50 | }; | |
51 | ||
14fa93cd SJ |
52 | #define MAX_IV_LEN 16 |
53 | ||
54 | /** | |
55 | * struct se_crypto_request - SE crypto request structure. | |
56 | * @opcode: Request opcode (enc/dec) | |
57 | * @flags: flags from crypto subsystem | |
58 | * @ctx_handle: Crypto context handle. | |
59 | * @gph: GP Header | |
60 | * @ctrl: Request Information. | |
4bede34c NR |
61 | * @orh: ORH address |
62 | * @comp: completion address | |
63 | * @src: Input sglist | |
64 | * @dst: Output sglist | |
14fa93cd SJ |
65 | */ |
66 | struct se_crypto_request { | |
67 | u8 opcode; | |
68 | gfp_t gfp; | |
69 | u32 flags; | |
70 | u64 ctx_handle; | |
71 | ||
72 | struct gphdr gph; | |
73 | union se_req_ctrl ctrl; | |
4bede34c NR |
74 | u64 *orh; |
75 | u64 *comp; | |
14fa93cd SJ |
76 | |
77 | struct scatterlist *src; | |
78 | struct scatterlist *dst; | |
79 | }; | |
80 | ||
81 | /* Crypto opcodes */ | |
82 | #define FLEXI_CRYPTO_ENCRYPT_HMAC 0x33 | |
83 | #define ENCRYPT 0 | |
84 | #define DECRYPT 1 | |
85 | ||
86 | /* IV from context */ | |
87 | #define IV_FROM_CTX 0 | |
88 | /* IV from Input data */ | |
89 | #define IV_FROM_DPTR 1 | |
90 | ||
91 | /** | |
92 | * cipher opcodes for firmware | |
93 | */ | |
94 | enum flexi_cipher { | |
95 | CIPHER_NULL = 0, | |
96 | CIPHER_3DES_CBC, | |
97 | CIPHER_3DES_ECB, | |
98 | CIPHER_AES_CBC, | |
99 | CIPHER_AES_ECB, | |
100 | CIPHER_AES_CFB, | |
101 | CIPHER_AES_CTR, | |
102 | CIPHER_AES_GCM, | |
103 | CIPHER_AES_XTS, | |
104 | CIPHER_AES_CCM, | |
105 | CIPHER_AES_CBC_CTS, | |
106 | CIPHER_AES_ECB_CTS, | |
107 | CIPHER_INVALID | |
108 | }; | |
109 | ||
c9613335 NR |
110 | enum flexi_auth { |
111 | AUTH_NULL = 0, | |
112 | AUTH_MD5, | |
113 | AUTH_SHA1, | |
114 | AUTH_SHA2_SHA224, | |
115 | AUTH_SHA2_SHA256, | |
116 | AUTH_SHA2_SHA384, | |
117 | AUTH_SHA2_SHA512, | |
118 | AUTH_GMAC, | |
119 | AUTH_INVALID | |
120 | }; | |
121 | ||
14fa93cd SJ |
122 | /** |
123 | * struct crypto_keys - Crypto keys | |
124 | * @key: Encryption key or KEY1 for AES-XTS | |
125 | * @iv: Encryption IV or Tweak for AES-XTS | |
126 | */ | |
127 | struct crypto_keys { | |
128 | union { | |
129 | u8 key[AES_MAX_KEY_SIZE]; | |
130 | u8 key1[AES_MAX_KEY_SIZE]; | |
131 | } u; | |
132 | u8 iv[AES_BLOCK_SIZE]; | |
133 | }; | |
134 | ||
135 | /** | |
136 | * struct auth_keys - Authentication keys | |
137 | * @ipad: IPAD or KEY2 for AES-XTS | |
138 | * @opad: OPAD or AUTH KEY if auth_input_type = 1 | |
139 | */ | |
140 | struct auth_keys { | |
141 | union { | |
142 | u8 ipad[64]; | |
143 | u8 key2[64]; | |
144 | } u; | |
145 | u8 opad[64]; | |
146 | }; | |
147 | ||
c9613335 NR |
148 | union fc_ctx_flags { |
149 | __be64 f; | |
150 | struct { | |
151 | #if defined(__BIG_ENDIAN_BITFIELD) | |
152 | u64 cipher_type : 4; | |
153 | u64 reserved_59 : 1; | |
154 | u64 aes_keylen : 2; | |
155 | u64 iv_source : 1; | |
156 | u64 hash_type : 4; | |
157 | u64 reserved_49_51 : 3; | |
158 | u64 auth_input_type: 1; | |
159 | u64 mac_len : 8; | |
160 | u64 reserved_0_39 : 40; | |
161 | #else | |
162 | u64 reserved_0_39 : 40; | |
163 | u64 mac_len : 8; | |
164 | u64 auth_input_type: 1; | |
165 | u64 reserved_49_51 : 3; | |
166 | u64 hash_type : 4; | |
167 | u64 iv_source : 1; | |
168 | u64 aes_keylen : 2; | |
169 | u64 reserved_59 : 1; | |
170 | u64 cipher_type : 4; | |
171 | #endif | |
172 | } w0; | |
173 | }; | |
14fa93cd SJ |
174 | /** |
175 | * struct flexi_crypto_context - Crypto context | |
176 | * @cipher_type: Encryption cipher type | |
177 | * @aes_keylen: AES key length | |
178 | * @iv_source: Encryption IV source | |
179 | * @hash_type: Authentication type | |
180 | * @auth_input_type: Authentication input type | |
181 | * 1 - Authentication IV and KEY, microcode calculates OPAD/IPAD | |
182 | * 0 - Authentication OPAD/IPAD | |
183 | * @mac_len: mac length | |
184 | * @crypto: Crypto keys | |
185 | * @auth: Authentication keys | |
186 | */ | |
187 | struct flexi_crypto_context { | |
c9613335 | 188 | union fc_ctx_flags flags; |
14fa93cd SJ |
189 | struct crypto_keys crypto; |
190 | struct auth_keys auth; | |
191 | }; | |
192 | ||
7172122b WW |
193 | struct crypto_ctx_hdr { |
194 | struct dma_pool *pool; | |
195 | dma_addr_t dma; | |
196 | void *vaddr; | |
197 | }; | |
198 | ||
14fa93cd SJ |
199 | struct nitrox_crypto_ctx { |
200 | struct nitrox_device *ndev; | |
201 | union { | |
202 | u64 ctx_handle; | |
203 | struct flexi_crypto_context *fctx; | |
204 | } u; | |
7172122b | 205 | struct crypto_ctx_hdr *chdr; |
14fa93cd SJ |
206 | }; |
207 | ||
208 | struct nitrox_kcrypt_request { | |
209 | struct se_crypto_request creq; | |
4bede34c NR |
210 | u8 *src; |
211 | u8 *dst; | |
14fa93cd SJ |
212 | }; |
213 | ||
8a3719a5 NR |
214 | /** |
215 | * struct nitrox_aead_rctx - AEAD request context | |
216 | * @nkreq: Base request context | |
217 | * @cryptlen: Encryption/Decryption data length | |
218 | * @assoclen: AAD length | |
219 | * @srclen: Input buffer length | |
220 | * @dstlen: Output buffer length | |
221 | * @iv: IV data | |
222 | * @ivsize: IV data length | |
223 | * @flags: AEAD req flags | |
224 | * @ctx_handle: Device context handle | |
225 | * @src: Source sglist | |
226 | * @dst: Destination sglist | |
227 | * @ctrl_arg: Identifies the request type (ENCRYPT/DECRYPT) | |
228 | */ | |
229 | struct nitrox_aead_rctx { | |
230 | struct nitrox_kcrypt_request nkreq; | |
231 | unsigned int cryptlen; | |
232 | unsigned int assoclen; | |
233 | unsigned int srclen; | |
234 | unsigned int dstlen; | |
235 | u8 *iv; | |
236 | int ivsize; | |
237 | u32 flags; | |
238 | u64 ctx_handle; | |
239 | struct scatterlist *src; | |
240 | struct scatterlist *dst; | |
241 | u8 ctrl_arg; | |
242 | }; | |
243 | ||
244 | /** | |
245 | * struct nitrox_rfc4106_rctx - rfc4106 cipher request context | |
246 | * @base: AEAD request context | |
247 | * @src: Source sglist | |
248 | * @dst: Destination sglist | |
249 | * @assoc: AAD | |
250 | */ | |
251 | struct nitrox_rfc4106_rctx { | |
252 | struct nitrox_aead_rctx base; | |
253 | struct scatterlist src[3]; | |
254 | struct scatterlist dst[3]; | |
255 | u8 assoc[20]; | |
256 | }; | |
257 | ||
14fa93cd SJ |
258 | /** |
259 | * struct pkt_instr_hdr - Packet Instruction Header | |
260 | * @g: Gather used | |
261 | * When [G] is set and [GSZ] != 0, the instruction is | |
262 | * indirect gather instruction. | |
263 | * When [G] is set and [GSZ] = 0, the instruction is | |
264 | * direct gather instruction. | |
265 | * @gsz: Number of pointers in the indirect gather list | |
266 | * @ihi: When set hardware duplicates the 1st 8 bytes of pkt_instr_hdr | |
267 | * and adds them to the packet after the pkt_instr_hdr but before any UDD | |
268 | * @ssz: Not used by the input hardware. But can become slc_store_int[SSZ] | |
269 | * when [IHI] is set. | |
270 | * @fsz: The number of front data bytes directly included in the | |
271 | * PCIe instruction. | |
272 | * @tlen: The length of the input packet in bytes, include: | |
273 | * - 16B pkt_hdr | |
274 | * - Inline context bytes if any, | |
275 | * - UDD if any, | |
276 | * - packet payload bytes | |
277 | */ | |
278 | union pkt_instr_hdr { | |
279 | u64 value; | |
280 | struct { | |
281 | #if defined(__BIG_ENDIAN_BITFIELD) | |
282 | u64 raz_48_63 : 16; | |
283 | u64 g : 1; | |
284 | u64 gsz : 7; | |
285 | u64 ihi : 1; | |
286 | u64 ssz : 7; | |
287 | u64 raz_30_31 : 2; | |
288 | u64 fsz : 6; | |
289 | u64 raz_16_23 : 8; | |
290 | u64 tlen : 16; | |
291 | #else | |
292 | u64 tlen : 16; | |
293 | u64 raz_16_23 : 8; | |
294 | u64 fsz : 6; | |
295 | u64 raz_30_31 : 2; | |
296 | u64 ssz : 7; | |
297 | u64 ihi : 1; | |
298 | u64 gsz : 7; | |
299 | u64 g : 1; | |
300 | u64 raz_48_63 : 16; | |
301 | #endif | |
302 | } s; | |
303 | }; | |
304 | ||
305 | /** | |
306 | * struct pkt_hdr - Packet Input Header | |
307 | * @opcode: Request opcode (Major) | |
308 | * @arg: Request opcode (Minor) | |
309 | * @ctxc: Context control. | |
310 | * @unca: When set [UNC] is the uncertainty count for an input packet. | |
311 | * The hardware uses uncertainty counts to predict | |
312 | * output buffer use and avoid deadlock. | |
313 | * @info: Not used by input hardware. Available for use | |
314 | * during SE processing. | |
315 | * @destport: The expected destination port/ring/channel for the packet. | |
316 | * @unc: Uncertainty count for an input packet. | |
317 | * @grp: SE group that will process the input packet. | |
318 | * @ctxl: Context Length in 64-bit words. | |
319 | * @uddl: User-defined data (UDD) length in bytes. | |
320 | * @ctxp: Context pointer. CTXP<63,2:0> must be zero in all cases. | |
321 | */ | |
322 | union pkt_hdr { | |
323 | u64 value[2]; | |
324 | struct { | |
325 | #if defined(__BIG_ENDIAN_BITFIELD) | |
326 | u64 opcode : 8; | |
327 | u64 arg : 8; | |
328 | u64 ctxc : 2; | |
329 | u64 unca : 1; | |
330 | u64 raz_44 : 1; | |
331 | u64 info : 3; | |
332 | u64 destport : 9; | |
333 | u64 unc : 8; | |
334 | u64 raz_19_23 : 5; | |
335 | u64 grp : 3; | |
336 | u64 raz_15 : 1; | |
337 | u64 ctxl : 7; | |
338 | u64 uddl : 8; | |
339 | #else | |
340 | u64 uddl : 8; | |
341 | u64 ctxl : 7; | |
342 | u64 raz_15 : 1; | |
343 | u64 grp : 3; | |
344 | u64 raz_19_23 : 5; | |
345 | u64 unc : 8; | |
346 | u64 destport : 9; | |
347 | u64 info : 3; | |
348 | u64 raz_44 : 1; | |
349 | u64 unca : 1; | |
350 | u64 ctxc : 2; | |
351 | u64 arg : 8; | |
352 | u64 opcode : 8; | |
353 | #endif | |
354 | __be64 ctxp; | |
355 | } s; | |
356 | }; | |
357 | ||
358 | /** | |
359 | * struct slc_store_info - Solicited Paceket Output Store Information. | |
360 | * @ssz: The number of scatterlist pointers for the solicited output port | |
361 | * packet. | |
362 | * @rptr: The result pointer for the solicited output port packet. | |
363 | * If [SSZ]=0, [RPTR] must point directly to a buffer on the remote | |
364 | * host that is large enough to hold the entire output packet. | |
365 | * If [SSZ]!=0, [RPTR] must point to an array of ([SSZ]+3)/4 | |
366 | * sglist components at [RPTR] on the remote host. | |
367 | */ | |
368 | union slc_store_info { | |
369 | u64 value[2]; | |
370 | struct { | |
371 | #if defined(__BIG_ENDIAN_BITFIELD) | |
372 | u64 raz_39_63 : 25; | |
373 | u64 ssz : 7; | |
374 | u64 raz_0_31 : 32; | |
375 | #else | |
376 | u64 raz_0_31 : 32; | |
377 | u64 ssz : 7; | |
378 | u64 raz_39_63 : 25; | |
379 | #endif | |
380 | __be64 rptr; | |
381 | } s; | |
382 | }; | |
383 | ||
384 | /** | |
385 | * struct nps_pkt_instr - NPS Packet Instruction of SE cores. | |
386 | * @dptr0 : Input pointer points to buffer in remote host. | |
387 | * @ih: Packet Instruction Header (8 bytes) | |
388 | * @irh: Packet Input Header (16 bytes) | |
389 | * @slc: Solicited Packet Output Store Information (16 bytes) | |
390 | * @fdata: Front data | |
391 | * | |
392 | * 64-Byte Instruction Format | |
393 | */ | |
394 | struct nps_pkt_instr { | |
395 | __be64 dptr0; | |
396 | union pkt_instr_hdr ih; | |
397 | union pkt_hdr irh; | |
398 | union slc_store_info slc; | |
399 | u64 fdata[2]; | |
400 | }; | |
401 | ||
402 | /** | |
403 | * struct ctx_hdr - Book keeping data about the crypto context | |
404 | * @pool: Pool used to allocate crypto context | |
405 | * @dma: Base DMA address of the cypto context | |
406 | * @ctx_dma: Actual usable crypto context for NITROX | |
407 | */ | |
408 | struct ctx_hdr { | |
409 | struct dma_pool *pool; | |
410 | dma_addr_t dma; | |
411 | dma_addr_t ctx_dma; | |
412 | }; | |
413 | ||
414 | /* | |
415 | * struct sglist_component - SG list component format | |
416 | * @len0: The number of bytes at [PTR0] on the remote host. | |
417 | * @len1: The number of bytes at [PTR1] on the remote host. | |
418 | * @len2: The number of bytes at [PTR2] on the remote host. | |
419 | * @len3: The number of bytes at [PTR3] on the remote host. | |
420 | * @dma0: First pointer point to buffer in remote host. | |
421 | * @dma1: Second pointer point to buffer in remote host. | |
422 | * @dma2: Third pointer point to buffer in remote host. | |
423 | * @dma3: Fourth pointer point to buffer in remote host. | |
424 | */ | |
425 | struct nitrox_sgcomp { | |
426 | __be16 len[4]; | |
427 | __be64 dma[4]; | |
428 | }; | |
429 | ||
430 | /* | |
431 | * strutct nitrox_sgtable - SG list information | |
4bede34c | 432 | * @sgmap_cnt: Number of buffers mapped |
14fa93cd | 433 | * @total_bytes: Total bytes in sglist. |
4bede34c NR |
434 | * @sgcomp_len: Total sglist components length. |
435 | * @sgcomp_dma: DMA address of sglist component. | |
436 | * @sg: crypto request buffer. | |
14fa93cd SJ |
437 | * @sgcomp: sglist component for NITROX. |
438 | */ | |
439 | struct nitrox_sgtable { | |
4bede34c | 440 | u8 sgmap_cnt; |
14fa93cd | 441 | u16 total_bytes; |
4bede34c NR |
442 | u32 sgcomp_len; |
443 | dma_addr_t sgcomp_dma; | |
444 | struct scatterlist *sg; | |
14fa93cd SJ |
445 | struct nitrox_sgcomp *sgcomp; |
446 | }; | |
447 | ||
448 | /* Response Header Length */ | |
449 | #define ORH_HLEN 8 | |
450 | /* Completion bytes Length */ | |
451 | #define COMP_HLEN 8 | |
452 | ||
453 | struct resp_hdr { | |
4bede34c NR |
454 | u64 *orh; |
455 | u64 *completion; | |
14fa93cd SJ |
456 | }; |
457 | ||
c9613335 | 458 | typedef void (*completion_t)(void *arg, int err); |
14fa93cd SJ |
459 | |
460 | /** | |
461 | * struct nitrox_softreq - Represents the NIROX Request. | |
462 | * @response: response list entry | |
463 | * @backlog: Backlog list entry | |
464 | * @ndev: Device used to submit the request | |
465 | * @cmdq: Command queue for submission | |
466 | * @resp: Response headers | |
467 | * @instr: 64B instruction | |
468 | * @in: SG table for input | |
469 | * @out SG table for output | |
470 | * @tstamp: Request submitted time in jiffies | |
471 | * @callback: callback after request completion/timeout | |
472 | * @cb_arg: callback argument | |
473 | */ | |
474 | struct nitrox_softreq { | |
475 | struct list_head response; | |
476 | struct list_head backlog; | |
477 | ||
478 | u32 flags; | |
479 | gfp_t gfp; | |
480 | atomic_t status; | |
14fa93cd SJ |
481 | |
482 | struct nitrox_device *ndev; | |
483 | struct nitrox_cmdq *cmdq; | |
484 | ||
485 | struct nps_pkt_instr instr; | |
486 | struct resp_hdr resp; | |
487 | struct nitrox_sgtable in; | |
488 | struct nitrox_sgtable out; | |
489 | ||
490 | unsigned long tstamp; | |
491 | ||
492 | completion_t callback; | |
c9613335 | 493 | void *cb_arg; |
14fa93cd SJ |
494 | }; |
495 | ||
c9613335 NR |
496 | static inline int flexi_aes_keylen(int keylen) |
497 | { | |
498 | int aes_keylen; | |
499 | ||
500 | switch (keylen) { | |
501 | case AES_KEYSIZE_128: | |
502 | aes_keylen = 1; | |
503 | break; | |
504 | case AES_KEYSIZE_192: | |
505 | aes_keylen = 2; | |
506 | break; | |
507 | case AES_KEYSIZE_256: | |
508 | aes_keylen = 3; | |
509 | break; | |
510 | default: | |
511 | aes_keylen = -EINVAL; | |
512 | break; | |
513 | } | |
514 | return aes_keylen; | |
515 | } | |
516 | ||
4bede34c NR |
517 | static inline void *alloc_req_buf(int nents, int extralen, gfp_t gfp) |
518 | { | |
519 | size_t size; | |
520 | ||
521 | size = sizeof(struct scatterlist) * nents; | |
522 | size += extralen; | |
523 | ||
524 | return kzalloc(size, gfp); | |
525 | } | |
526 | ||
c9613335 NR |
527 | /** |
528 | * create_single_sg - Point SG entry to the data | |
529 | * @sg: Destination SG list | |
530 | * @buf: Data | |
531 | * @buflen: Data length | |
532 | * | |
533 | * Returns next free entry in the destination SG list | |
534 | **/ | |
4bede34c NR |
535 | static inline struct scatterlist *create_single_sg(struct scatterlist *sg, |
536 | void *buf, int buflen) | |
537 | { | |
538 | sg_set_buf(sg, buf, buflen); | |
539 | sg++; | |
540 | return sg; | |
541 | } | |
542 | ||
c9613335 NR |
543 | /** |
544 | * create_multi_sg - Create multiple sg entries with buflen data length from | |
545 | * source sglist | |
546 | * @to_sg: Destination SG list | |
547 | * @from_sg: Source SG list | |
548 | * @buflen: Data length | |
549 | * | |
550 | * Returns next free entry in the destination SG list | |
551 | **/ | |
4bede34c | 552 | static inline struct scatterlist *create_multi_sg(struct scatterlist *to_sg, |
c9613335 NR |
553 | struct scatterlist *from_sg, |
554 | int buflen) | |
4bede34c | 555 | { |
c9613335 NR |
556 | struct scatterlist *sg = to_sg; |
557 | unsigned int sglen; | |
558 | ||
8a3719a5 | 559 | for (; buflen && from_sg; buflen -= sglen) { |
c9613335 NR |
560 | sglen = from_sg->length; |
561 | if (sglen > buflen) | |
562 | sglen = buflen; | |
4bede34c | 563 | |
c9613335 NR |
564 | sg_set_buf(sg, sg_virt(from_sg), sglen); |
565 | from_sg = sg_next(from_sg); | |
566 | sg++; | |
4bede34c NR |
567 | } |
568 | ||
c9613335 | 569 | return sg; |
4bede34c NR |
570 | } |
571 | ||
572 | static inline void set_orh_value(u64 *orh) | |
573 | { | |
574 | WRITE_ONCE(*orh, PENDING_SIG); | |
575 | } | |
576 | ||
577 | static inline void set_comp_value(u64 *comp) | |
578 | { | |
579 | WRITE_ONCE(*comp, PENDING_SIG); | |
580 | } | |
581 | ||
c9613335 NR |
582 | static inline int alloc_src_req_buf(struct nitrox_kcrypt_request *nkreq, |
583 | int nents, int ivsize) | |
584 | { | |
585 | struct se_crypto_request *creq = &nkreq->creq; | |
586 | ||
587 | nkreq->src = alloc_req_buf(nents, ivsize, creq->gfp); | |
588 | if (!nkreq->src) | |
589 | return -ENOMEM; | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | static inline void nitrox_creq_copy_iv(char *dst, char *src, int size) | |
595 | { | |
596 | memcpy(dst, src, size); | |
597 | } | |
598 | ||
599 | static inline struct scatterlist *nitrox_creq_src_sg(char *iv, int ivsize) | |
600 | { | |
601 | return (struct scatterlist *)(iv + ivsize); | |
602 | } | |
603 | ||
604 | static inline void nitrox_creq_set_src_sg(struct nitrox_kcrypt_request *nkreq, | |
605 | int nents, int ivsize, | |
606 | struct scatterlist *src, int buflen) | |
607 | { | |
608 | char *iv = nkreq->src; | |
609 | struct scatterlist *sg; | |
610 | struct se_crypto_request *creq = &nkreq->creq; | |
611 | ||
612 | creq->src = nitrox_creq_src_sg(iv, ivsize); | |
613 | sg = creq->src; | |
614 | sg_init_table(sg, nents); | |
615 | ||
616 | /* Input format: | |
617 | * +----+----------------+ | |
618 | * | IV | SRC sg entries | | |
619 | * +----+----------------+ | |
620 | */ | |
621 | ||
622 | /* IV */ | |
623 | sg = create_single_sg(sg, iv, ivsize); | |
624 | /* SRC entries */ | |
625 | create_multi_sg(sg, src, buflen); | |
626 | } | |
627 | ||
628 | static inline int alloc_dst_req_buf(struct nitrox_kcrypt_request *nkreq, | |
629 | int nents) | |
630 | { | |
631 | int extralen = ORH_HLEN + COMP_HLEN; | |
632 | struct se_crypto_request *creq = &nkreq->creq; | |
633 | ||
634 | nkreq->dst = alloc_req_buf(nents, extralen, creq->gfp); | |
635 | if (!nkreq->dst) | |
636 | return -ENOMEM; | |
637 | ||
638 | return 0; | |
639 | } | |
640 | ||
641 | static inline void nitrox_creq_set_orh(struct nitrox_kcrypt_request *nkreq) | |
642 | { | |
643 | struct se_crypto_request *creq = &nkreq->creq; | |
644 | ||
645 | creq->orh = (u64 *)(nkreq->dst); | |
646 | set_orh_value(creq->orh); | |
647 | } | |
648 | ||
649 | static inline void nitrox_creq_set_comp(struct nitrox_kcrypt_request *nkreq) | |
650 | { | |
651 | struct se_crypto_request *creq = &nkreq->creq; | |
652 | ||
653 | creq->comp = (u64 *)(nkreq->dst + ORH_HLEN); | |
654 | set_comp_value(creq->comp); | |
655 | } | |
656 | ||
657 | static inline struct scatterlist *nitrox_creq_dst_sg(char *dst) | |
658 | { | |
659 | return (struct scatterlist *)(dst + ORH_HLEN + COMP_HLEN); | |
660 | } | |
661 | ||
662 | static inline void nitrox_creq_set_dst_sg(struct nitrox_kcrypt_request *nkreq, | |
663 | int nents, int ivsize, | |
664 | struct scatterlist *dst, int buflen) | |
665 | { | |
666 | struct se_crypto_request *creq = &nkreq->creq; | |
667 | struct scatterlist *sg; | |
668 | char *iv = nkreq->src; | |
669 | ||
670 | creq->dst = nitrox_creq_dst_sg(nkreq->dst); | |
671 | sg = creq->dst; | |
672 | sg_init_table(sg, nents); | |
673 | ||
674 | /* Output format: | |
675 | * +-----+----+----------------+-----------------+ | |
676 | * | ORH | IV | DST sg entries | COMPLETION Bytes| | |
677 | * +-----+----+----------------+-----------------+ | |
678 | */ | |
679 | ||
680 | /* ORH */ | |
681 | sg = create_single_sg(sg, creq->orh, ORH_HLEN); | |
682 | /* IV */ | |
683 | sg = create_single_sg(sg, iv, ivsize); | |
684 | /* DST entries */ | |
685 | sg = create_multi_sg(sg, dst, buflen); | |
686 | /* COMPLETION Bytes */ | |
687 | create_single_sg(sg, creq->comp, COMP_HLEN); | |
688 | } | |
689 | ||
14fa93cd | 690 | #endif /* __NITROX_REQ_H */ |