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9d12ba86 RR |
1 | /* |
2 | * Copyright 2016 Broadcom | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License, version 2, as | |
6 | * published by the Free Software Foundation (the "GPL"). | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License version 2 (GPLv2) for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * version 2 (GPLv2) along with this source code. | |
15 | */ | |
16 | ||
17 | #include <linux/err.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/interrupt.h> | |
23 | #include <linux/platform_device.h> | |
24 | #include <linux/scatterlist.h> | |
25 | #include <linux/crypto.h> | |
26 | #include <linux/kthread.h> | |
27 | #include <linux/rtnetlink.h> | |
28 | #include <linux/sched.h> | |
29 | #include <linux/of_address.h> | |
30 | #include <linux/of_device.h> | |
31 | #include <linux/io.h> | |
32 | #include <linux/bitops.h> | |
33 | ||
34 | #include <crypto/algapi.h> | |
35 | #include <crypto/aead.h> | |
36 | #include <crypto/internal/aead.h> | |
37 | #include <crypto/aes.h> | |
38 | #include <crypto/des.h> | |
1126d47d | 39 | #include <crypto/hmac.h> |
9d12ba86 RR |
40 | #include <crypto/sha.h> |
41 | #include <crypto/md5.h> | |
42 | #include <crypto/authenc.h> | |
43 | #include <crypto/skcipher.h> | |
44 | #include <crypto/hash.h> | |
9d12ba86 RR |
45 | #include <crypto/sha3.h> |
46 | ||
47 | #include "util.h" | |
48 | #include "cipher.h" | |
49 | #include "spu.h" | |
50 | #include "spum.h" | |
51 | #include "spu2.h" | |
52 | ||
53 | /* ================= Device Structure ================== */ | |
54 | ||
55 | struct device_private iproc_priv; | |
56 | ||
57 | /* ==================== Parameters ===================== */ | |
58 | ||
59 | int flow_debug_logging; | |
60 | module_param(flow_debug_logging, int, 0644); | |
61 | MODULE_PARM_DESC(flow_debug_logging, "Enable Flow Debug Logging"); | |
62 | ||
63 | int packet_debug_logging; | |
64 | module_param(packet_debug_logging, int, 0644); | |
65 | MODULE_PARM_DESC(packet_debug_logging, "Enable Packet Debug Logging"); | |
66 | ||
67 | int debug_logging_sleep; | |
68 | module_param(debug_logging_sleep, int, 0644); | |
69 | MODULE_PARM_DESC(debug_logging_sleep, "Packet Debug Logging Sleep"); | |
70 | ||
71 | /* | |
72 | * The value of these module parameters is used to set the priority for each | |
73 | * algo type when this driver registers algos with the kernel crypto API. | |
74 | * To use a priority other than the default, set the priority in the insmod or | |
75 | * modprobe. Changing the module priority after init time has no effect. | |
76 | * | |
77 | * The default priorities are chosen to be lower (less preferred) than ARMv8 CE | |
78 | * algos, but more preferred than generic software algos. | |
79 | */ | |
80 | static int cipher_pri = 150; | |
81 | module_param(cipher_pri, int, 0644); | |
82 | MODULE_PARM_DESC(cipher_pri, "Priority for cipher algos"); | |
83 | ||
84 | static int hash_pri = 100; | |
85 | module_param(hash_pri, int, 0644); | |
86 | MODULE_PARM_DESC(hash_pri, "Priority for hash algos"); | |
87 | ||
88 | static int aead_pri = 150; | |
89 | module_param(aead_pri, int, 0644); | |
90 | MODULE_PARM_DESC(aead_pri, "Priority for AEAD algos"); | |
91 | ||
9d12ba86 RR |
92 | /* A type 3 BCM header, expected to precede the SPU header for SPU-M. |
93 | * Bits 3 and 4 in the first byte encode the channel number (the dma ringset). | |
94 | * 0x60 - ring 0 | |
95 | * 0x68 - ring 1 | |
96 | * 0x70 - ring 2 | |
97 | * 0x78 - ring 3 | |
98 | */ | |
99 | char BCMHEADER[] = { 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28 }; | |
100 | /* | |
101 | * Some SPU hw does not use BCM header on SPU messages. So BCM_HDR_LEN | |
102 | * is set dynamically after reading SPU type from device tree. | |
103 | */ | |
104 | #define BCM_HDR_LEN iproc_priv.bcm_hdr_len | |
105 | ||
106 | /* min and max time to sleep before retrying when mbox queue is full. usec */ | |
107 | #define MBOX_SLEEP_MIN 800 | |
108 | #define MBOX_SLEEP_MAX 1000 | |
109 | ||
110 | /** | |
111 | * select_channel() - Select a SPU channel to handle a crypto request. Selects | |
112 | * channel in round robin order. | |
113 | * | |
114 | * Return: channel index | |
115 | */ | |
116 | static u8 select_channel(void) | |
117 | { | |
118 | u8 chan_idx = atomic_inc_return(&iproc_priv.next_chan); | |
119 | ||
9166c443 | 120 | return chan_idx % iproc_priv.spu.num_chan; |
9d12ba86 RR |
121 | } |
122 | ||
123 | /** | |
124 | * spu_ablkcipher_rx_sg_create() - Build up the scatterlist of buffers used to | |
125 | * receive a SPU response message for an ablkcipher request. Includes buffers to | |
126 | * catch SPU message headers and the response data. | |
127 | * @mssg: mailbox message containing the receive sg | |
128 | * @rctx: crypto request context | |
129 | * @rx_frag_num: number of scatterlist elements required to hold the | |
130 | * SPU response message | |
131 | * @chunksize: Number of bytes of response data expected | |
132 | * @stat_pad_len: Number of bytes required to pad the STAT field to | |
133 | * a 4-byte boundary | |
134 | * | |
135 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
136 | * when the request completes, whether the request is handled successfully or | |
137 | * there is an error. | |
138 | * | |
139 | * Returns: | |
140 | * 0 if successful | |
141 | * < 0 if an error | |
142 | */ | |
143 | static int | |
144 | spu_ablkcipher_rx_sg_create(struct brcm_message *mssg, | |
145 | struct iproc_reqctx_s *rctx, | |
146 | u8 rx_frag_num, | |
147 | unsigned int chunksize, u32 stat_pad_len) | |
148 | { | |
149 | struct spu_hw *spu = &iproc_priv.spu; | |
150 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
151 | struct iproc_ctx_s *ctx = rctx->ctx; | |
152 | u32 datalen; /* Number of bytes of response data expected */ | |
153 | ||
154 | mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist), | |
155 | rctx->gfp); | |
156 | if (!mssg->spu.dst) | |
157 | return -ENOMEM; | |
158 | ||
159 | sg = mssg->spu.dst; | |
160 | sg_init_table(sg, rx_frag_num); | |
161 | /* Space for SPU message header */ | |
162 | sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len); | |
163 | ||
164 | /* If XTS tweak in payload, add buffer to receive encrypted tweak */ | |
165 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
166 | spu->spu_xts_tweak_in_payload()) | |
167 | sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak, | |
168 | SPU_XTS_TWEAK_SIZE); | |
169 | ||
170 | /* Copy in each dst sg entry from request, up to chunksize */ | |
171 | datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip, | |
172 | rctx->dst_nents, chunksize); | |
173 | if (datalen < chunksize) { | |
174 | pr_err("%s(): failed to copy dst sg to mbox msg. chunksize %u, datalen %u", | |
175 | __func__, chunksize, datalen); | |
176 | return -EFAULT; | |
177 | } | |
178 | ||
179 | if (ctx->cipher.alg == CIPHER_ALG_RC4) | |
180 | /* Add buffer to catch 260-byte SUPDT field for RC4 */ | |
181 | sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak, SPU_SUPDT_LEN); | |
182 | ||
183 | if (stat_pad_len) | |
184 | sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len); | |
185 | ||
186 | memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN); | |
187 | sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len()); | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
192 | /** | |
193 | * spu_ablkcipher_tx_sg_create() - Build up the scatterlist of buffers used to | |
194 | * send a SPU request message for an ablkcipher request. Includes SPU message | |
195 | * headers and the request data. | |
196 | * @mssg: mailbox message containing the transmit sg | |
197 | * @rctx: crypto request context | |
198 | * @tx_frag_num: number of scatterlist elements required to construct the | |
199 | * SPU request message | |
200 | * @chunksize: Number of bytes of request data | |
201 | * @pad_len: Number of pad bytes | |
202 | * | |
203 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
204 | * when the request completes, whether the request is handled successfully or | |
205 | * there is an error. | |
206 | * | |
207 | * Returns: | |
208 | * 0 if successful | |
209 | * < 0 if an error | |
210 | */ | |
211 | static int | |
212 | spu_ablkcipher_tx_sg_create(struct brcm_message *mssg, | |
213 | struct iproc_reqctx_s *rctx, | |
214 | u8 tx_frag_num, unsigned int chunksize, u32 pad_len) | |
215 | { | |
216 | struct spu_hw *spu = &iproc_priv.spu; | |
217 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
218 | struct iproc_ctx_s *ctx = rctx->ctx; | |
219 | u32 datalen; /* Number of bytes of response data expected */ | |
220 | u32 stat_len; | |
221 | ||
222 | mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist), | |
223 | rctx->gfp); | |
224 | if (unlikely(!mssg->spu.src)) | |
225 | return -ENOMEM; | |
226 | ||
227 | sg = mssg->spu.src; | |
228 | sg_init_table(sg, tx_frag_num); | |
229 | ||
230 | sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr, | |
231 | BCM_HDR_LEN + ctx->spu_req_hdr_len); | |
232 | ||
233 | /* if XTS tweak in payload, copy from IV (where crypto API puts it) */ | |
234 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
235 | spu->spu_xts_tweak_in_payload()) | |
236 | sg_set_buf(sg++, rctx->msg_buf.iv_ctr, SPU_XTS_TWEAK_SIZE); | |
237 | ||
238 | /* Copy in each src sg entry from request, up to chunksize */ | |
239 | datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip, | |
240 | rctx->src_nents, chunksize); | |
241 | if (unlikely(datalen < chunksize)) { | |
242 | pr_err("%s(): failed to copy src sg to mbox msg", | |
243 | __func__); | |
244 | return -EFAULT; | |
245 | } | |
246 | ||
247 | if (pad_len) | |
248 | sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len); | |
249 | ||
250 | stat_len = spu->spu_tx_status_len(); | |
251 | if (stat_len) { | |
252 | memset(rctx->msg_buf.tx_stat, 0, stat_len); | |
253 | sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len); | |
254 | } | |
255 | return 0; | |
256 | } | |
257 | ||
f0e2ce58 | 258 | static int mailbox_send_message(struct brcm_message *mssg, u32 flags, |
259 | u8 chan_idx) | |
260 | { | |
261 | int err; | |
262 | int retry_cnt = 0; | |
263 | struct device *dev = &(iproc_priv.pdev->dev); | |
264 | ||
265 | err = mbox_send_message(iproc_priv.mbox[chan_idx], mssg); | |
266 | if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) { | |
267 | while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) { | |
268 | /* | |
269 | * Mailbox queue is full. Since MAY_SLEEP is set, assume | |
270 | * not in atomic context and we can wait and try again. | |
271 | */ | |
272 | retry_cnt++; | |
273 | usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX); | |
274 | err = mbox_send_message(iproc_priv.mbox[chan_idx], | |
275 | mssg); | |
276 | atomic_inc(&iproc_priv.mb_no_spc); | |
277 | } | |
278 | } | |
279 | if (err < 0) { | |
280 | atomic_inc(&iproc_priv.mb_send_fail); | |
281 | return err; | |
282 | } | |
283 | ||
284 | /* Check error returned by mailbox controller */ | |
285 | err = mssg->error; | |
286 | if (unlikely(err < 0)) { | |
287 | dev_err(dev, "message error %d", err); | |
288 | /* Signal txdone for mailbox channel */ | |
289 | } | |
290 | ||
291 | /* Signal txdone for mailbox channel */ | |
292 | mbox_client_txdone(iproc_priv.mbox[chan_idx], err); | |
293 | return err; | |
294 | } | |
295 | ||
9d12ba86 RR |
296 | /** |
297 | * handle_ablkcipher_req() - Submit as much of a block cipher request as fits in | |
298 | * a single SPU request message, starting at the current position in the request | |
299 | * data. | |
300 | * @rctx: Crypto request context | |
301 | * | |
302 | * This may be called on the crypto API thread, or, when a request is so large | |
303 | * it must be broken into multiple SPU messages, on the thread used to invoke | |
304 | * the response callback. When requests are broken into multiple SPU | |
305 | * messages, we assume subsequent messages depend on previous results, and | |
306 | * thus always wait for previous results before submitting the next message. | |
307 | * Because requests are submitted in lock step like this, there is no need | |
308 | * to synchronize access to request data structures. | |
309 | * | |
310 | * Return: -EINPROGRESS: request has been accepted and result will be returned | |
311 | * asynchronously | |
312 | * Any other value indicates an error | |
313 | */ | |
314 | static int handle_ablkcipher_req(struct iproc_reqctx_s *rctx) | |
315 | { | |
316 | struct spu_hw *spu = &iproc_priv.spu; | |
317 | struct crypto_async_request *areq = rctx->parent; | |
318 | struct ablkcipher_request *req = | |
319 | container_of(areq, struct ablkcipher_request, base); | |
320 | struct iproc_ctx_s *ctx = rctx->ctx; | |
321 | struct spu_cipher_parms cipher_parms; | |
322 | int err = 0; | |
323 | unsigned int chunksize = 0; /* Num bytes of request to submit */ | |
324 | int remaining = 0; /* Bytes of request still to process */ | |
325 | int chunk_start; /* Beginning of data for current SPU msg */ | |
326 | ||
327 | /* IV or ctr value to use in this SPU msg */ | |
328 | u8 local_iv_ctr[MAX_IV_SIZE]; | |
329 | u32 stat_pad_len; /* num bytes to align status field */ | |
330 | u32 pad_len; /* total length of all padding */ | |
331 | bool update_key = false; | |
332 | struct brcm_message *mssg; /* mailbox message */ | |
9d12ba86 RR |
333 | |
334 | /* number of entries in src and dst sg in mailbox message. */ | |
335 | u8 rx_frag_num = 2; /* response header and STATUS */ | |
336 | u8 tx_frag_num = 1; /* request header */ | |
337 | ||
338 | flow_log("%s\n", __func__); | |
339 | ||
340 | cipher_parms.alg = ctx->cipher.alg; | |
341 | cipher_parms.mode = ctx->cipher.mode; | |
342 | cipher_parms.type = ctx->cipher_type; | |
343 | cipher_parms.key_len = ctx->enckeylen; | |
344 | cipher_parms.key_buf = ctx->enckey; | |
345 | cipher_parms.iv_buf = local_iv_ctr; | |
346 | cipher_parms.iv_len = rctx->iv_ctr_len; | |
347 | ||
348 | mssg = &rctx->mb_mssg; | |
349 | chunk_start = rctx->src_sent; | |
350 | remaining = rctx->total_todo - chunk_start; | |
351 | ||
352 | /* determine the chunk we are breaking off and update the indexes */ | |
353 | if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) && | |
354 | (remaining > ctx->max_payload)) | |
355 | chunksize = ctx->max_payload; | |
356 | else | |
357 | chunksize = remaining; | |
358 | ||
359 | rctx->src_sent += chunksize; | |
360 | rctx->total_sent = rctx->src_sent; | |
361 | ||
362 | /* Count number of sg entries to be included in this request */ | |
363 | rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize); | |
364 | rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize); | |
365 | ||
366 | if ((ctx->cipher.mode == CIPHER_MODE_CBC) && | |
367 | rctx->is_encrypt && chunk_start) | |
368 | /* | |
369 | * Encrypting non-first first chunk. Copy last block of | |
370 | * previous result to IV for this chunk. | |
371 | */ | |
372 | sg_copy_part_to_buf(req->dst, rctx->msg_buf.iv_ctr, | |
373 | rctx->iv_ctr_len, | |
374 | chunk_start - rctx->iv_ctr_len); | |
375 | ||
376 | if (rctx->iv_ctr_len) { | |
377 | /* get our local copy of the iv */ | |
378 | __builtin_memcpy(local_iv_ctr, rctx->msg_buf.iv_ctr, | |
379 | rctx->iv_ctr_len); | |
380 | ||
381 | /* generate the next IV if possible */ | |
382 | if ((ctx->cipher.mode == CIPHER_MODE_CBC) && | |
383 | !rctx->is_encrypt) { | |
384 | /* | |
385 | * CBC Decrypt: next IV is the last ciphertext block in | |
386 | * this chunk | |
387 | */ | |
388 | sg_copy_part_to_buf(req->src, rctx->msg_buf.iv_ctr, | |
389 | rctx->iv_ctr_len, | |
390 | rctx->src_sent - rctx->iv_ctr_len); | |
391 | } else if (ctx->cipher.mode == CIPHER_MODE_CTR) { | |
392 | /* | |
393 | * The SPU hardware increments the counter once for | |
394 | * each AES block of 16 bytes. So update the counter | |
395 | * for the next chunk, if there is one. Note that for | |
396 | * this chunk, the counter has already been copied to | |
397 | * local_iv_ctr. We can assume a block size of 16, | |
398 | * because we only support CTR mode for AES, not for | |
399 | * any other cipher alg. | |
400 | */ | |
401 | add_to_ctr(rctx->msg_buf.iv_ctr, chunksize >> 4); | |
402 | } | |
403 | } | |
404 | ||
405 | if (ctx->cipher.alg == CIPHER_ALG_RC4) { | |
406 | rx_frag_num++; | |
407 | if (chunk_start) { | |
408 | /* | |
409 | * for non-first RC4 chunks, use SUPDT from previous | |
410 | * response as key for this chunk. | |
411 | */ | |
412 | cipher_parms.key_buf = rctx->msg_buf.c.supdt_tweak; | |
413 | update_key = true; | |
414 | cipher_parms.type = CIPHER_TYPE_UPDT; | |
415 | } else if (!rctx->is_encrypt) { | |
416 | /* | |
417 | * First RC4 chunk. For decrypt, key in pre-built msg | |
418 | * header may have been changed if encrypt required | |
419 | * multiple chunks. So revert the key to the | |
420 | * ctx->enckey value. | |
421 | */ | |
422 | update_key = true; | |
423 | cipher_parms.type = CIPHER_TYPE_INIT; | |
424 | } | |
425 | } | |
426 | ||
427 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
428 | flow_log("max_payload infinite\n"); | |
429 | else | |
430 | flow_log("max_payload %u\n", ctx->max_payload); | |
431 | ||
432 | flow_log("sent:%u start:%u remains:%u size:%u\n", | |
433 | rctx->src_sent, chunk_start, remaining, chunksize); | |
434 | ||
435 | /* Copy SPU header template created at setkey time */ | |
436 | memcpy(rctx->msg_buf.bcm_spu_req_hdr, ctx->bcm_spu_req_hdr, | |
437 | sizeof(rctx->msg_buf.bcm_spu_req_hdr)); | |
438 | ||
439 | /* | |
440 | * Pass SUPDT field as key. Key field in finish() call is only used | |
441 | * when update_key has been set above for RC4. Will be ignored in | |
442 | * all other cases. | |
443 | */ | |
444 | spu->spu_cipher_req_finish(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
445 | ctx->spu_req_hdr_len, !(rctx->is_encrypt), | |
446 | &cipher_parms, update_key, chunksize); | |
447 | ||
448 | atomic64_add(chunksize, &iproc_priv.bytes_out); | |
449 | ||
450 | stat_pad_len = spu->spu_wordalign_padlen(chunksize); | |
451 | if (stat_pad_len) | |
452 | rx_frag_num++; | |
453 | pad_len = stat_pad_len; | |
454 | if (pad_len) { | |
455 | tx_frag_num++; | |
456 | spu->spu_request_pad(rctx->msg_buf.spu_req_pad, 0, | |
457 | 0, ctx->auth.alg, ctx->auth.mode, | |
458 | rctx->total_sent, stat_pad_len); | |
459 | } | |
460 | ||
461 | spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
462 | ctx->spu_req_hdr_len); | |
463 | packet_log("payload:\n"); | |
464 | dump_sg(rctx->src_sg, rctx->src_skip, chunksize); | |
465 | packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len); | |
466 | ||
467 | /* | |
468 | * Build mailbox message containing SPU request msg and rx buffers | |
469 | * to catch response message | |
470 | */ | |
471 | memset(mssg, 0, sizeof(*mssg)); | |
472 | mssg->type = BRCM_MESSAGE_SPU; | |
473 | mssg->ctx = rctx; /* Will be returned in response */ | |
474 | ||
475 | /* Create rx scatterlist to catch result */ | |
476 | rx_frag_num += rctx->dst_nents; | |
477 | ||
478 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
479 | spu->spu_xts_tweak_in_payload()) | |
480 | rx_frag_num++; /* extra sg to insert tweak */ | |
481 | ||
482 | err = spu_ablkcipher_rx_sg_create(mssg, rctx, rx_frag_num, chunksize, | |
483 | stat_pad_len); | |
484 | if (err) | |
485 | return err; | |
486 | ||
487 | /* Create tx scatterlist containing SPU request message */ | |
488 | tx_frag_num += rctx->src_nents; | |
489 | if (spu->spu_tx_status_len()) | |
490 | tx_frag_num++; | |
491 | ||
492 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
493 | spu->spu_xts_tweak_in_payload()) | |
494 | tx_frag_num++; /* extra sg to insert tweak */ | |
495 | ||
496 | err = spu_ablkcipher_tx_sg_create(mssg, rctx, tx_frag_num, chunksize, | |
497 | pad_len); | |
498 | if (err) | |
499 | return err; | |
500 | ||
f0e2ce58 | 501 | err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx); |
502 | if (unlikely(err < 0)) | |
9d12ba86 | 503 | return err; |
9d12ba86 RR |
504 | |
505 | return -EINPROGRESS; | |
506 | } | |
507 | ||
508 | /** | |
509 | * handle_ablkcipher_resp() - Process a block cipher SPU response. Updates the | |
510 | * total received count for the request and updates global stats. | |
511 | * @rctx: Crypto request context | |
512 | */ | |
513 | static void handle_ablkcipher_resp(struct iproc_reqctx_s *rctx) | |
514 | { | |
515 | struct spu_hw *spu = &iproc_priv.spu; | |
516 | #ifdef DEBUG | |
517 | struct crypto_async_request *areq = rctx->parent; | |
518 | struct ablkcipher_request *req = ablkcipher_request_cast(areq); | |
519 | #endif | |
520 | struct iproc_ctx_s *ctx = rctx->ctx; | |
521 | u32 payload_len; | |
522 | ||
523 | /* See how much data was returned */ | |
524 | payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr); | |
525 | ||
526 | /* | |
527 | * In XTS mode, the first SPU_XTS_TWEAK_SIZE bytes may be the | |
528 | * encrypted tweak ("i") value; we don't count those. | |
529 | */ | |
530 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
531 | spu->spu_xts_tweak_in_payload() && | |
532 | (payload_len >= SPU_XTS_TWEAK_SIZE)) | |
533 | payload_len -= SPU_XTS_TWEAK_SIZE; | |
534 | ||
535 | atomic64_add(payload_len, &iproc_priv.bytes_in); | |
536 | ||
537 | flow_log("%s() offset: %u, bd_len: %u BD:\n", | |
538 | __func__, rctx->total_received, payload_len); | |
539 | ||
540 | dump_sg(req->dst, rctx->total_received, payload_len); | |
541 | if (ctx->cipher.alg == CIPHER_ALG_RC4) | |
542 | packet_dump(" supdt ", rctx->msg_buf.c.supdt_tweak, | |
543 | SPU_SUPDT_LEN); | |
544 | ||
545 | rctx->total_received += payload_len; | |
546 | if (rctx->total_received == rctx->total_todo) { | |
547 | atomic_inc(&iproc_priv.op_counts[SPU_OP_CIPHER]); | |
548 | atomic_inc( | |
549 | &iproc_priv.cipher_cnt[ctx->cipher.alg][ctx->cipher.mode]); | |
550 | } | |
551 | } | |
552 | ||
553 | /** | |
554 | * spu_ahash_rx_sg_create() - Build up the scatterlist of buffers used to | |
555 | * receive a SPU response message for an ahash request. | |
556 | * @mssg: mailbox message containing the receive sg | |
557 | * @rctx: crypto request context | |
558 | * @rx_frag_num: number of scatterlist elements required to hold the | |
559 | * SPU response message | |
560 | * @digestsize: length of hash digest, in bytes | |
561 | * @stat_pad_len: Number of bytes required to pad the STAT field to | |
562 | * a 4-byte boundary | |
563 | * | |
564 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
565 | * when the request completes, whether the request is handled successfully or | |
566 | * there is an error. | |
567 | * | |
568 | * Return: | |
569 | * 0 if successful | |
570 | * < 0 if an error | |
571 | */ | |
572 | static int | |
573 | spu_ahash_rx_sg_create(struct brcm_message *mssg, | |
574 | struct iproc_reqctx_s *rctx, | |
575 | u8 rx_frag_num, unsigned int digestsize, | |
576 | u32 stat_pad_len) | |
577 | { | |
578 | struct spu_hw *spu = &iproc_priv.spu; | |
579 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
580 | struct iproc_ctx_s *ctx = rctx->ctx; | |
581 | ||
582 | mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist), | |
583 | rctx->gfp); | |
584 | if (!mssg->spu.dst) | |
585 | return -ENOMEM; | |
586 | ||
587 | sg = mssg->spu.dst; | |
588 | sg_init_table(sg, rx_frag_num); | |
589 | /* Space for SPU message header */ | |
590 | sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len); | |
591 | ||
592 | /* Space for digest */ | |
593 | sg_set_buf(sg++, rctx->msg_buf.digest, digestsize); | |
594 | ||
595 | if (stat_pad_len) | |
596 | sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len); | |
597 | ||
598 | memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN); | |
599 | sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len()); | |
600 | return 0; | |
601 | } | |
602 | ||
603 | /** | |
604 | * spu_ahash_tx_sg_create() - Build up the scatterlist of buffers used to send | |
605 | * a SPU request message for an ahash request. Includes SPU message headers and | |
606 | * the request data. | |
607 | * @mssg: mailbox message containing the transmit sg | |
608 | * @rctx: crypto request context | |
609 | * @tx_frag_num: number of scatterlist elements required to construct the | |
610 | * SPU request message | |
611 | * @spu_hdr_len: length in bytes of SPU message header | |
612 | * @hash_carry_len: Number of bytes of data carried over from previous req | |
613 | * @new_data_len: Number of bytes of new request data | |
614 | * @pad_len: Number of pad bytes | |
615 | * | |
616 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
617 | * when the request completes, whether the request is handled successfully or | |
618 | * there is an error. | |
619 | * | |
620 | * Return: | |
621 | * 0 if successful | |
622 | * < 0 if an error | |
623 | */ | |
624 | static int | |
625 | spu_ahash_tx_sg_create(struct brcm_message *mssg, | |
626 | struct iproc_reqctx_s *rctx, | |
627 | u8 tx_frag_num, | |
628 | u32 spu_hdr_len, | |
629 | unsigned int hash_carry_len, | |
630 | unsigned int new_data_len, u32 pad_len) | |
631 | { | |
632 | struct spu_hw *spu = &iproc_priv.spu; | |
633 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
634 | u32 datalen; /* Number of bytes of response data expected */ | |
635 | u32 stat_len; | |
636 | ||
637 | mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist), | |
638 | rctx->gfp); | |
639 | if (!mssg->spu.src) | |
640 | return -ENOMEM; | |
641 | ||
642 | sg = mssg->spu.src; | |
643 | sg_init_table(sg, tx_frag_num); | |
644 | ||
645 | sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr, | |
646 | BCM_HDR_LEN + spu_hdr_len); | |
647 | ||
648 | if (hash_carry_len) | |
649 | sg_set_buf(sg++, rctx->hash_carry, hash_carry_len); | |
650 | ||
651 | if (new_data_len) { | |
652 | /* Copy in each src sg entry from request, up to chunksize */ | |
653 | datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip, | |
654 | rctx->src_nents, new_data_len); | |
655 | if (datalen < new_data_len) { | |
656 | pr_err("%s(): failed to copy src sg to mbox msg", | |
657 | __func__); | |
658 | return -EFAULT; | |
659 | } | |
660 | } | |
661 | ||
662 | if (pad_len) | |
663 | sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len); | |
664 | ||
665 | stat_len = spu->spu_tx_status_len(); | |
666 | if (stat_len) { | |
667 | memset(rctx->msg_buf.tx_stat, 0, stat_len); | |
668 | sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len); | |
669 | } | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
674 | /** | |
675 | * handle_ahash_req() - Process an asynchronous hash request from the crypto | |
676 | * API. | |
677 | * @rctx: Crypto request context | |
678 | * | |
679 | * Builds a SPU request message embedded in a mailbox message and submits the | |
680 | * mailbox message on a selected mailbox channel. The SPU request message is | |
681 | * constructed as a scatterlist, including entries from the crypto API's | |
682 | * src scatterlist to avoid copying the data to be hashed. This function is | |
683 | * called either on the thread from the crypto API, or, in the case that the | |
684 | * crypto API request is too large to fit in a single SPU request message, | |
685 | * on the thread that invokes the receive callback with a response message. | |
686 | * Because some operations require the response from one chunk before the next | |
687 | * chunk can be submitted, we always wait for the response for the previous | |
688 | * chunk before submitting the next chunk. Because requests are submitted in | |
689 | * lock step like this, there is no need to synchronize access to request data | |
690 | * structures. | |
691 | * | |
692 | * Return: | |
693 | * -EINPROGRESS: request has been submitted to SPU and response will be | |
694 | * returned asynchronously | |
695 | * -EAGAIN: non-final request included a small amount of data, which for | |
696 | * efficiency we did not submit to the SPU, but instead stored | |
697 | * to be submitted to the SPU with the next part of the request | |
698 | * other: an error code | |
699 | */ | |
700 | static int handle_ahash_req(struct iproc_reqctx_s *rctx) | |
701 | { | |
702 | struct spu_hw *spu = &iproc_priv.spu; | |
703 | struct crypto_async_request *areq = rctx->parent; | |
704 | struct ahash_request *req = ahash_request_cast(areq); | |
705 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
706 | struct crypto_tfm *tfm = crypto_ahash_tfm(ahash); | |
707 | unsigned int blocksize = crypto_tfm_alg_blocksize(tfm); | |
708 | struct iproc_ctx_s *ctx = rctx->ctx; | |
709 | ||
710 | /* number of bytes still to be hashed in this req */ | |
711 | unsigned int nbytes_to_hash = 0; | |
712 | int err = 0; | |
713 | unsigned int chunksize = 0; /* length of hash carry + new data */ | |
714 | /* | |
715 | * length of new data, not from hash carry, to be submitted in | |
716 | * this hw request | |
717 | */ | |
718 | unsigned int new_data_len; | |
719 | ||
720 | unsigned int chunk_start = 0; | |
721 | u32 db_size; /* Length of data field, incl gcm and hash padding */ | |
722 | int pad_len = 0; /* total pad len, including gcm, hash, stat padding */ | |
723 | u32 data_pad_len = 0; /* length of GCM/CCM padding */ | |
724 | u32 stat_pad_len = 0; /* length of padding to align STATUS word */ | |
725 | struct brcm_message *mssg; /* mailbox message */ | |
726 | struct spu_request_opts req_opts; | |
727 | struct spu_cipher_parms cipher_parms; | |
728 | struct spu_hash_parms hash_parms; | |
729 | struct spu_aead_parms aead_parms; | |
730 | unsigned int local_nbuf; | |
731 | u32 spu_hdr_len; | |
732 | unsigned int digestsize; | |
733 | u16 rem = 0; | |
9d12ba86 RR |
734 | |
735 | /* | |
736 | * number of entries in src and dst sg. Always includes SPU msg header. | |
737 | * rx always includes a buffer to catch digest and STATUS. | |
738 | */ | |
739 | u8 rx_frag_num = 3; | |
740 | u8 tx_frag_num = 1; | |
741 | ||
742 | flow_log("total_todo %u, total_sent %u\n", | |
743 | rctx->total_todo, rctx->total_sent); | |
744 | ||
745 | memset(&req_opts, 0, sizeof(req_opts)); | |
746 | memset(&cipher_parms, 0, sizeof(cipher_parms)); | |
747 | memset(&hash_parms, 0, sizeof(hash_parms)); | |
748 | memset(&aead_parms, 0, sizeof(aead_parms)); | |
749 | ||
750 | req_opts.bd_suppress = true; | |
751 | hash_parms.alg = ctx->auth.alg; | |
752 | hash_parms.mode = ctx->auth.mode; | |
753 | hash_parms.type = HASH_TYPE_NONE; | |
754 | hash_parms.key_buf = (u8 *)ctx->authkey; | |
755 | hash_parms.key_len = ctx->authkeylen; | |
756 | ||
757 | /* | |
758 | * For hash algorithms below assignment looks bit odd but | |
759 | * it's needed for AES-XCBC and AES-CMAC hash algorithms | |
760 | * to differentiate between 128, 192, 256 bit key values. | |
761 | * Based on the key values, hash algorithm is selected. | |
762 | * For example for 128 bit key, hash algorithm is AES-128. | |
763 | */ | |
764 | cipher_parms.type = ctx->cipher_type; | |
765 | ||
766 | mssg = &rctx->mb_mssg; | |
767 | chunk_start = rctx->src_sent; | |
768 | ||
769 | /* | |
770 | * Compute the amount remaining to hash. This may include data | |
771 | * carried over from previous requests. | |
772 | */ | |
773 | nbytes_to_hash = rctx->total_todo - rctx->total_sent; | |
774 | chunksize = nbytes_to_hash; | |
775 | if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) && | |
776 | (chunksize > ctx->max_payload)) | |
777 | chunksize = ctx->max_payload; | |
778 | ||
779 | /* | |
780 | * If this is not a final request and the request data is not a multiple | |
781 | * of a full block, then simply park the extra data and prefix it to the | |
782 | * data for the next request. | |
783 | */ | |
784 | if (!rctx->is_final) { | |
785 | u8 *dest = rctx->hash_carry + rctx->hash_carry_len; | |
786 | u16 new_len; /* len of data to add to hash carry */ | |
787 | ||
788 | rem = chunksize % blocksize; /* remainder */ | |
789 | if (rem) { | |
790 | /* chunksize not a multiple of blocksize */ | |
791 | chunksize -= rem; | |
792 | if (chunksize == 0) { | |
793 | /* Don't have a full block to submit to hw */ | |
794 | new_len = rem - rctx->hash_carry_len; | |
795 | sg_copy_part_to_buf(req->src, dest, new_len, | |
796 | rctx->src_sent); | |
797 | rctx->hash_carry_len = rem; | |
798 | flow_log("Exiting with hash carry len: %u\n", | |
799 | rctx->hash_carry_len); | |
800 | packet_dump(" buf: ", | |
801 | rctx->hash_carry, | |
802 | rctx->hash_carry_len); | |
803 | return -EAGAIN; | |
804 | } | |
805 | } | |
806 | } | |
807 | ||
808 | /* if we have hash carry, then prefix it to the data in this request */ | |
809 | local_nbuf = rctx->hash_carry_len; | |
810 | rctx->hash_carry_len = 0; | |
811 | if (local_nbuf) | |
812 | tx_frag_num++; | |
813 | new_data_len = chunksize - local_nbuf; | |
814 | ||
815 | /* Count number of sg entries to be used in this request */ | |
816 | rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, | |
817 | new_data_len); | |
818 | ||
819 | /* AES hashing keeps key size in type field, so need to copy it here */ | |
820 | if (hash_parms.alg == HASH_ALG_AES) | |
a2e5d408 | 821 | hash_parms.type = (enum hash_type)cipher_parms.type; |
9d12ba86 RR |
822 | else |
823 | hash_parms.type = spu->spu_hash_type(rctx->total_sent); | |
824 | ||
825 | digestsize = spu->spu_digest_size(ctx->digestsize, ctx->auth.alg, | |
826 | hash_parms.type); | |
827 | hash_parms.digestsize = digestsize; | |
828 | ||
829 | /* update the indexes */ | |
830 | rctx->total_sent += chunksize; | |
831 | /* if you sent a prebuf then that wasn't from this req->src */ | |
832 | rctx->src_sent += new_data_len; | |
833 | ||
834 | if ((rctx->total_sent == rctx->total_todo) && rctx->is_final) | |
835 | hash_parms.pad_len = spu->spu_hash_pad_len(hash_parms.alg, | |
836 | hash_parms.mode, | |
837 | chunksize, | |
838 | blocksize); | |
839 | ||
840 | /* | |
841 | * If a non-first chunk, then include the digest returned from the | |
842 | * previous chunk so that hw can add to it (except for AES types). | |
843 | */ | |
844 | if ((hash_parms.type == HASH_TYPE_UPDT) && | |
845 | (hash_parms.alg != HASH_ALG_AES)) { | |
846 | hash_parms.key_buf = rctx->incr_hash; | |
847 | hash_parms.key_len = digestsize; | |
848 | } | |
849 | ||
850 | atomic64_add(chunksize, &iproc_priv.bytes_out); | |
851 | ||
852 | flow_log("%s() final: %u nbuf: %u ", | |
853 | __func__, rctx->is_final, local_nbuf); | |
854 | ||
855 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
856 | flow_log("max_payload infinite\n"); | |
857 | else | |
858 | flow_log("max_payload %u\n", ctx->max_payload); | |
859 | ||
860 | flow_log("chunk_start: %u chunk_size: %u\n", chunk_start, chunksize); | |
861 | ||
862 | /* Prepend SPU header with type 3 BCM header */ | |
863 | memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN); | |
864 | ||
865 | hash_parms.prebuf_len = local_nbuf; | |
866 | spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr + | |
867 | BCM_HDR_LEN, | |
868 | &req_opts, &cipher_parms, | |
869 | &hash_parms, &aead_parms, | |
870 | new_data_len); | |
871 | ||
872 | if (spu_hdr_len == 0) { | |
873 | pr_err("Failed to create SPU request header\n"); | |
874 | return -EFAULT; | |
875 | } | |
876 | ||
877 | /* | |
878 | * Determine total length of padding required. Put all padding in one | |
879 | * buffer. | |
880 | */ | |
881 | data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, chunksize); | |
882 | db_size = spu_real_db_size(0, 0, local_nbuf, new_data_len, | |
883 | 0, 0, hash_parms.pad_len); | |
884 | if (spu->spu_tx_status_len()) | |
885 | stat_pad_len = spu->spu_wordalign_padlen(db_size); | |
886 | if (stat_pad_len) | |
887 | rx_frag_num++; | |
888 | pad_len = hash_parms.pad_len + data_pad_len + stat_pad_len; | |
889 | if (pad_len) { | |
890 | tx_frag_num++; | |
891 | spu->spu_request_pad(rctx->msg_buf.spu_req_pad, data_pad_len, | |
892 | hash_parms.pad_len, ctx->auth.alg, | |
893 | ctx->auth.mode, rctx->total_sent, | |
894 | stat_pad_len); | |
895 | } | |
896 | ||
897 | spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
898 | spu_hdr_len); | |
899 | packet_dump(" prebuf: ", rctx->hash_carry, local_nbuf); | |
900 | flow_log("Data:\n"); | |
901 | dump_sg(rctx->src_sg, rctx->src_skip, new_data_len); | |
902 | packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len); | |
903 | ||
904 | /* | |
905 | * Build mailbox message containing SPU request msg and rx buffers | |
906 | * to catch response message | |
907 | */ | |
908 | memset(mssg, 0, sizeof(*mssg)); | |
909 | mssg->type = BRCM_MESSAGE_SPU; | |
910 | mssg->ctx = rctx; /* Will be returned in response */ | |
911 | ||
912 | /* Create rx scatterlist to catch result */ | |
913 | err = spu_ahash_rx_sg_create(mssg, rctx, rx_frag_num, digestsize, | |
914 | stat_pad_len); | |
915 | if (err) | |
916 | return err; | |
917 | ||
918 | /* Create tx scatterlist containing SPU request message */ | |
919 | tx_frag_num += rctx->src_nents; | |
920 | if (spu->spu_tx_status_len()) | |
921 | tx_frag_num++; | |
922 | err = spu_ahash_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len, | |
923 | local_nbuf, new_data_len, pad_len); | |
924 | if (err) | |
925 | return err; | |
926 | ||
f0e2ce58 | 927 | err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx); |
928 | if (unlikely(err < 0)) | |
9d12ba86 | 929 | return err; |
f0e2ce58 | 930 | |
9d12ba86 RR |
931 | return -EINPROGRESS; |
932 | } | |
933 | ||
934 | /** | |
935 | * spu_hmac_outer_hash() - Request synchonous software compute of the outer hash | |
936 | * for an HMAC request. | |
937 | * @req: The HMAC request from the crypto API | |
938 | * @ctx: The session context | |
939 | * | |
940 | * Return: 0 if synchronous hash operation successful | |
941 | * -EINVAL if the hash algo is unrecognized | |
942 | * any other value indicates an error | |
943 | */ | |
944 | static int spu_hmac_outer_hash(struct ahash_request *req, | |
945 | struct iproc_ctx_s *ctx) | |
946 | { | |
947 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
948 | unsigned int blocksize = | |
949 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash)); | |
950 | int rc; | |
951 | ||
952 | switch (ctx->auth.alg) { | |
953 | case HASH_ALG_MD5: | |
954 | rc = do_shash("md5", req->result, ctx->opad, blocksize, | |
955 | req->result, ctx->digestsize, NULL, 0); | |
956 | break; | |
957 | case HASH_ALG_SHA1: | |
958 | rc = do_shash("sha1", req->result, ctx->opad, blocksize, | |
959 | req->result, ctx->digestsize, NULL, 0); | |
960 | break; | |
961 | case HASH_ALG_SHA224: | |
962 | rc = do_shash("sha224", req->result, ctx->opad, blocksize, | |
963 | req->result, ctx->digestsize, NULL, 0); | |
964 | break; | |
965 | case HASH_ALG_SHA256: | |
966 | rc = do_shash("sha256", req->result, ctx->opad, blocksize, | |
967 | req->result, ctx->digestsize, NULL, 0); | |
968 | break; | |
969 | case HASH_ALG_SHA384: | |
970 | rc = do_shash("sha384", req->result, ctx->opad, blocksize, | |
971 | req->result, ctx->digestsize, NULL, 0); | |
972 | break; | |
973 | case HASH_ALG_SHA512: | |
974 | rc = do_shash("sha512", req->result, ctx->opad, blocksize, | |
975 | req->result, ctx->digestsize, NULL, 0); | |
976 | break; | |
977 | default: | |
978 | pr_err("%s() Error : unknown hmac type\n", __func__); | |
979 | rc = -EINVAL; | |
980 | } | |
981 | return rc; | |
982 | } | |
983 | ||
984 | /** | |
985 | * ahash_req_done() - Process a hash result from the SPU hardware. | |
986 | * @rctx: Crypto request context | |
987 | * | |
988 | * Return: 0 if successful | |
989 | * < 0 if an error | |
990 | */ | |
991 | static int ahash_req_done(struct iproc_reqctx_s *rctx) | |
992 | { | |
993 | struct spu_hw *spu = &iproc_priv.spu; | |
994 | struct crypto_async_request *areq = rctx->parent; | |
995 | struct ahash_request *req = ahash_request_cast(areq); | |
996 | struct iproc_ctx_s *ctx = rctx->ctx; | |
997 | int err; | |
998 | ||
999 | memcpy(req->result, rctx->msg_buf.digest, ctx->digestsize); | |
1000 | ||
1001 | if (spu->spu_type == SPU_TYPE_SPUM) { | |
1002 | /* byte swap the output from the UPDT function to network byte | |
1003 | * order | |
1004 | */ | |
1005 | if (ctx->auth.alg == HASH_ALG_MD5) { | |
1006 | __swab32s((u32 *)req->result); | |
1007 | __swab32s(((u32 *)req->result) + 1); | |
1008 | __swab32s(((u32 *)req->result) + 2); | |
1009 | __swab32s(((u32 *)req->result) + 3); | |
1010 | __swab32s(((u32 *)req->result) + 4); | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | flow_dump(" digest ", req->result, ctx->digestsize); | |
1015 | ||
1016 | /* if this an HMAC then do the outer hash */ | |
1017 | if (rctx->is_sw_hmac) { | |
1018 | err = spu_hmac_outer_hash(req, ctx); | |
1019 | if (err < 0) | |
1020 | return err; | |
1021 | flow_dump(" hmac: ", req->result, ctx->digestsize); | |
1022 | } | |
1023 | ||
1024 | if (rctx->is_sw_hmac || ctx->auth.mode == HASH_MODE_HMAC) { | |
1025 | atomic_inc(&iproc_priv.op_counts[SPU_OP_HMAC]); | |
1026 | atomic_inc(&iproc_priv.hmac_cnt[ctx->auth.alg]); | |
1027 | } else { | |
1028 | atomic_inc(&iproc_priv.op_counts[SPU_OP_HASH]); | |
1029 | atomic_inc(&iproc_priv.hash_cnt[ctx->auth.alg]); | |
1030 | } | |
1031 | ||
1032 | return 0; | |
1033 | } | |
1034 | ||
1035 | /** | |
1036 | * handle_ahash_resp() - Process a SPU response message for a hash request. | |
1037 | * Checks if the entire crypto API request has been processed, and if so, | |
1038 | * invokes post processing on the result. | |
1039 | * @rctx: Crypto request context | |
1040 | */ | |
1041 | static void handle_ahash_resp(struct iproc_reqctx_s *rctx) | |
1042 | { | |
1043 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1044 | #ifdef DEBUG | |
1045 | struct crypto_async_request *areq = rctx->parent; | |
1046 | struct ahash_request *req = ahash_request_cast(areq); | |
1047 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
1048 | unsigned int blocksize = | |
1049 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash)); | |
1050 | #endif | |
1051 | /* | |
1052 | * Save hash to use as input to next op if incremental. Might be copying | |
1053 | * too much, but that's easier than figuring out actual digest size here | |
1054 | */ | |
1055 | memcpy(rctx->incr_hash, rctx->msg_buf.digest, MAX_DIGEST_SIZE); | |
1056 | ||
1057 | flow_log("%s() blocksize:%u digestsize:%u\n", | |
1058 | __func__, blocksize, ctx->digestsize); | |
1059 | ||
1060 | atomic64_add(ctx->digestsize, &iproc_priv.bytes_in); | |
1061 | ||
1062 | if (rctx->is_final && (rctx->total_sent == rctx->total_todo)) | |
1063 | ahash_req_done(rctx); | |
1064 | } | |
1065 | ||
1066 | /** | |
1067 | * spu_aead_rx_sg_create() - Build up the scatterlist of buffers used to receive | |
1068 | * a SPU response message for an AEAD request. Includes buffers to catch SPU | |
1069 | * message headers and the response data. | |
1070 | * @mssg: mailbox message containing the receive sg | |
1071 | * @rctx: crypto request context | |
1072 | * @rx_frag_num: number of scatterlist elements required to hold the | |
1073 | * SPU response message | |
1074 | * @assoc_len: Length of associated data included in the crypto request | |
1075 | * @ret_iv_len: Length of IV returned in response | |
1076 | * @resp_len: Number of bytes of response data expected to be written to | |
1077 | * dst buffer from crypto API | |
1078 | * @digestsize: Length of hash digest, in bytes | |
1079 | * @stat_pad_len: Number of bytes required to pad the STAT field to | |
1080 | * a 4-byte boundary | |
1081 | * | |
1082 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
1083 | * when the request completes, whether the request is handled successfully or | |
1084 | * there is an error. | |
1085 | * | |
1086 | * Returns: | |
1087 | * 0 if successful | |
1088 | * < 0 if an error | |
1089 | */ | |
1090 | static int spu_aead_rx_sg_create(struct brcm_message *mssg, | |
1091 | struct aead_request *req, | |
1092 | struct iproc_reqctx_s *rctx, | |
1093 | u8 rx_frag_num, | |
1094 | unsigned int assoc_len, | |
1095 | u32 ret_iv_len, unsigned int resp_len, | |
1096 | unsigned int digestsize, u32 stat_pad_len) | |
1097 | { | |
1098 | struct spu_hw *spu = &iproc_priv.spu; | |
1099 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
1100 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1101 | u32 datalen; /* Number of bytes of response data expected */ | |
1102 | u32 assoc_buf_len; | |
1103 | u8 data_padlen = 0; | |
1104 | ||
1105 | if (ctx->is_rfc4543) { | |
1106 | /* RFC4543: only pad after data, not after AAD */ | |
1107 | data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1108 | assoc_len + resp_len); | |
1109 | assoc_buf_len = assoc_len; | |
1110 | } else { | |
1111 | data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1112 | resp_len); | |
1113 | assoc_buf_len = spu->spu_assoc_resp_len(ctx->cipher.mode, | |
1114 | assoc_len, ret_iv_len, | |
1115 | rctx->is_encrypt); | |
1116 | } | |
1117 | ||
1118 | if (ctx->cipher.mode == CIPHER_MODE_CCM) | |
1119 | /* ICV (after data) must be in the next 32-bit word for CCM */ | |
1120 | data_padlen += spu->spu_wordalign_padlen(assoc_buf_len + | |
1121 | resp_len + | |
1122 | data_padlen); | |
1123 | ||
1124 | if (data_padlen) | |
1125 | /* have to catch gcm pad in separate buffer */ | |
1126 | rx_frag_num++; | |
1127 | ||
1128 | mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist), | |
1129 | rctx->gfp); | |
1130 | if (!mssg->spu.dst) | |
1131 | return -ENOMEM; | |
1132 | ||
1133 | sg = mssg->spu.dst; | |
1134 | sg_init_table(sg, rx_frag_num); | |
1135 | ||
1136 | /* Space for SPU message header */ | |
1137 | sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len); | |
1138 | ||
1139 | if (assoc_buf_len) { | |
1140 | /* | |
1141 | * Don't write directly to req->dst, because SPU may pad the | |
1142 | * assoc data in the response | |
1143 | */ | |
1144 | memset(rctx->msg_buf.a.resp_aad, 0, assoc_buf_len); | |
1145 | sg_set_buf(sg++, rctx->msg_buf.a.resp_aad, assoc_buf_len); | |
1146 | } | |
1147 | ||
1148 | if (resp_len) { | |
1149 | /* | |
1150 | * Copy in each dst sg entry from request, up to chunksize. | |
1151 | * dst sg catches just the data. digest caught in separate buf. | |
1152 | */ | |
1153 | datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip, | |
1154 | rctx->dst_nents, resp_len); | |
1155 | if (datalen < (resp_len)) { | |
1156 | pr_err("%s(): failed to copy dst sg to mbox msg. expected len %u, datalen %u", | |
1157 | __func__, resp_len, datalen); | |
1158 | return -EFAULT; | |
1159 | } | |
1160 | } | |
1161 | ||
1162 | /* If GCM/CCM data is padded, catch padding in separate buffer */ | |
1163 | if (data_padlen) { | |
1164 | memset(rctx->msg_buf.a.gcmpad, 0, data_padlen); | |
1165 | sg_set_buf(sg++, rctx->msg_buf.a.gcmpad, data_padlen); | |
1166 | } | |
1167 | ||
1168 | /* Always catch ICV in separate buffer */ | |
1169 | sg_set_buf(sg++, rctx->msg_buf.digest, digestsize); | |
1170 | ||
1171 | flow_log("stat_pad_len %u\n", stat_pad_len); | |
1172 | if (stat_pad_len) { | |
1173 | memset(rctx->msg_buf.rx_stat_pad, 0, stat_pad_len); | |
1174 | sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len); | |
1175 | } | |
1176 | ||
1177 | memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN); | |
1178 | sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len()); | |
1179 | ||
1180 | return 0; | |
1181 | } | |
1182 | ||
1183 | /** | |
1184 | * spu_aead_tx_sg_create() - Build up the scatterlist of buffers used to send a | |
1185 | * SPU request message for an AEAD request. Includes SPU message headers and the | |
1186 | * request data. | |
1187 | * @mssg: mailbox message containing the transmit sg | |
1188 | * @rctx: crypto request context | |
1189 | * @tx_frag_num: number of scatterlist elements required to construct the | |
1190 | * SPU request message | |
1191 | * @spu_hdr_len: length of SPU message header in bytes | |
1192 | * @assoc: crypto API associated data scatterlist | |
1193 | * @assoc_len: length of associated data | |
1194 | * @assoc_nents: number of scatterlist entries containing assoc data | |
1195 | * @aead_iv_len: length of AEAD IV, if included | |
1196 | * @chunksize: Number of bytes of request data | |
1197 | * @aad_pad_len: Number of bytes of padding at end of AAD. For GCM/CCM. | |
1198 | * @pad_len: Number of pad bytes | |
1199 | * @incl_icv: If true, write separate ICV buffer after data and | |
1200 | * any padding | |
1201 | * | |
1202 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
1203 | * when the request completes, whether the request is handled successfully or | |
1204 | * there is an error. | |
1205 | * | |
1206 | * Return: | |
1207 | * 0 if successful | |
1208 | * < 0 if an error | |
1209 | */ | |
1210 | static int spu_aead_tx_sg_create(struct brcm_message *mssg, | |
1211 | struct iproc_reqctx_s *rctx, | |
1212 | u8 tx_frag_num, | |
1213 | u32 spu_hdr_len, | |
1214 | struct scatterlist *assoc, | |
1215 | unsigned int assoc_len, | |
1216 | int assoc_nents, | |
1217 | unsigned int aead_iv_len, | |
1218 | unsigned int chunksize, | |
1219 | u32 aad_pad_len, u32 pad_len, bool incl_icv) | |
1220 | { | |
1221 | struct spu_hw *spu = &iproc_priv.spu; | |
1222 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
1223 | struct scatterlist *assoc_sg = assoc; | |
1224 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1225 | u32 datalen; /* Number of bytes of data to write */ | |
1226 | u32 written; /* Number of bytes of data written */ | |
1227 | u32 assoc_offset = 0; | |
1228 | u32 stat_len; | |
1229 | ||
1230 | mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist), | |
1231 | rctx->gfp); | |
1232 | if (!mssg->spu.src) | |
1233 | return -ENOMEM; | |
1234 | ||
1235 | sg = mssg->spu.src; | |
1236 | sg_init_table(sg, tx_frag_num); | |
1237 | ||
1238 | sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr, | |
1239 | BCM_HDR_LEN + spu_hdr_len); | |
1240 | ||
1241 | if (assoc_len) { | |
1242 | /* Copy in each associated data sg entry from request */ | |
1243 | written = spu_msg_sg_add(&sg, &assoc_sg, &assoc_offset, | |
1244 | assoc_nents, assoc_len); | |
1245 | if (written < assoc_len) { | |
1246 | pr_err("%s(): failed to copy assoc sg to mbox msg", | |
1247 | __func__); | |
1248 | return -EFAULT; | |
1249 | } | |
1250 | } | |
1251 | ||
1252 | if (aead_iv_len) | |
1253 | sg_set_buf(sg++, rctx->msg_buf.iv_ctr, aead_iv_len); | |
1254 | ||
1255 | if (aad_pad_len) { | |
1256 | memset(rctx->msg_buf.a.req_aad_pad, 0, aad_pad_len); | |
1257 | sg_set_buf(sg++, rctx->msg_buf.a.req_aad_pad, aad_pad_len); | |
1258 | } | |
1259 | ||
1260 | datalen = chunksize; | |
1261 | if ((chunksize > ctx->digestsize) && incl_icv) | |
1262 | datalen -= ctx->digestsize; | |
1263 | if (datalen) { | |
1264 | /* For aead, a single msg should consume the entire src sg */ | |
1265 | written = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip, | |
1266 | rctx->src_nents, datalen); | |
1267 | if (written < datalen) { | |
1268 | pr_err("%s(): failed to copy src sg to mbox msg", | |
1269 | __func__); | |
1270 | return -EFAULT; | |
1271 | } | |
1272 | } | |
1273 | ||
1274 | if (pad_len) { | |
1275 | memset(rctx->msg_buf.spu_req_pad, 0, pad_len); | |
1276 | sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len); | |
1277 | } | |
1278 | ||
1279 | if (incl_icv) | |
1280 | sg_set_buf(sg++, rctx->msg_buf.digest, ctx->digestsize); | |
1281 | ||
1282 | stat_len = spu->spu_tx_status_len(); | |
1283 | if (stat_len) { | |
1284 | memset(rctx->msg_buf.tx_stat, 0, stat_len); | |
1285 | sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len); | |
1286 | } | |
1287 | return 0; | |
1288 | } | |
1289 | ||
1290 | /** | |
1291 | * handle_aead_req() - Submit a SPU request message for the next chunk of the | |
1292 | * current AEAD request. | |
1293 | * @rctx: Crypto request context | |
1294 | * | |
1295 | * Unlike other operation types, we assume the length of the request fits in | |
1296 | * a single SPU request message. aead_enqueue() makes sure this is true. | |
1297 | * Comments for other op types regarding threads applies here as well. | |
1298 | * | |
1299 | * Unlike incremental hash ops, where the spu returns the entire hash for | |
1300 | * truncated algs like sha-224, the SPU returns just the truncated hash in | |
1301 | * response to aead requests. So digestsize is always ctx->digestsize here. | |
1302 | * | |
1303 | * Return: -EINPROGRESS: crypto request has been accepted and result will be | |
1304 | * returned asynchronously | |
1305 | * Any other value indicates an error | |
1306 | */ | |
1307 | static int handle_aead_req(struct iproc_reqctx_s *rctx) | |
1308 | { | |
1309 | struct spu_hw *spu = &iproc_priv.spu; | |
1310 | struct crypto_async_request *areq = rctx->parent; | |
1311 | struct aead_request *req = container_of(areq, | |
1312 | struct aead_request, base); | |
1313 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1314 | int err; | |
1315 | unsigned int chunksize; | |
1316 | unsigned int resp_len; | |
1317 | u32 spu_hdr_len; | |
1318 | u32 db_size; | |
1319 | u32 stat_pad_len; | |
1320 | u32 pad_len; | |
1321 | struct brcm_message *mssg; /* mailbox message */ | |
1322 | struct spu_request_opts req_opts; | |
1323 | struct spu_cipher_parms cipher_parms; | |
1324 | struct spu_hash_parms hash_parms; | |
1325 | struct spu_aead_parms aead_parms; | |
1326 | int assoc_nents = 0; | |
1327 | bool incl_icv = false; | |
1328 | unsigned int digestsize = ctx->digestsize; | |
9d12ba86 RR |
1329 | |
1330 | /* number of entries in src and dst sg. Always includes SPU msg header. | |
1331 | */ | |
1332 | u8 rx_frag_num = 2; /* and STATUS */ | |
1333 | u8 tx_frag_num = 1; | |
1334 | ||
1335 | /* doing the whole thing at once */ | |
1336 | chunksize = rctx->total_todo; | |
1337 | ||
1338 | flow_log("%s: chunksize %u\n", __func__, chunksize); | |
1339 | ||
1340 | memset(&req_opts, 0, sizeof(req_opts)); | |
1341 | memset(&hash_parms, 0, sizeof(hash_parms)); | |
1342 | memset(&aead_parms, 0, sizeof(aead_parms)); | |
1343 | ||
1344 | req_opts.is_inbound = !(rctx->is_encrypt); | |
1345 | req_opts.auth_first = ctx->auth_first; | |
1346 | req_opts.is_aead = true; | |
1347 | req_opts.is_esp = ctx->is_esp; | |
1348 | ||
1349 | cipher_parms.alg = ctx->cipher.alg; | |
1350 | cipher_parms.mode = ctx->cipher.mode; | |
1351 | cipher_parms.type = ctx->cipher_type; | |
1352 | cipher_parms.key_buf = ctx->enckey; | |
1353 | cipher_parms.key_len = ctx->enckeylen; | |
1354 | cipher_parms.iv_buf = rctx->msg_buf.iv_ctr; | |
1355 | cipher_parms.iv_len = rctx->iv_ctr_len; | |
1356 | ||
1357 | hash_parms.alg = ctx->auth.alg; | |
1358 | hash_parms.mode = ctx->auth.mode; | |
1359 | hash_parms.type = HASH_TYPE_NONE; | |
1360 | hash_parms.key_buf = (u8 *)ctx->authkey; | |
1361 | hash_parms.key_len = ctx->authkeylen; | |
1362 | hash_parms.digestsize = digestsize; | |
1363 | ||
1364 | if ((ctx->auth.alg == HASH_ALG_SHA224) && | |
1365 | (ctx->authkeylen < SHA224_DIGEST_SIZE)) | |
1366 | hash_parms.key_len = SHA224_DIGEST_SIZE; | |
1367 | ||
1368 | aead_parms.assoc_size = req->assoclen; | |
1369 | if (ctx->is_esp && !ctx->is_rfc4543) { | |
1370 | /* | |
1371 | * 8-byte IV is included assoc data in request. SPU2 | |
1372 | * expects AAD to include just SPI and seqno. So | |
1373 | * subtract off the IV len. | |
1374 | */ | |
a59851d2 | 1375 | aead_parms.assoc_size -= GCM_RFC4106_IV_SIZE; |
9d12ba86 RR |
1376 | |
1377 | if (rctx->is_encrypt) { | |
1378 | aead_parms.return_iv = true; | |
a59851d2 | 1379 | aead_parms.ret_iv_len = GCM_RFC4106_IV_SIZE; |
9d12ba86 RR |
1380 | aead_parms.ret_iv_off = GCM_ESP_SALT_SIZE; |
1381 | } | |
1382 | } else { | |
1383 | aead_parms.ret_iv_len = 0; | |
1384 | } | |
1385 | ||
1386 | /* | |
1387 | * Count number of sg entries from the crypto API request that are to | |
1388 | * be included in this mailbox message. For dst sg, don't count space | |
1389 | * for digest. Digest gets caught in a separate buffer and copied back | |
1390 | * to dst sg when processing response. | |
1391 | */ | |
1392 | rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize); | |
1393 | rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize); | |
1394 | if (aead_parms.assoc_size) | |
1395 | assoc_nents = spu_sg_count(rctx->assoc, 0, | |
1396 | aead_parms.assoc_size); | |
1397 | ||
1398 | mssg = &rctx->mb_mssg; | |
1399 | ||
1400 | rctx->total_sent = chunksize; | |
1401 | rctx->src_sent = chunksize; | |
1402 | if (spu->spu_assoc_resp_len(ctx->cipher.mode, | |
1403 | aead_parms.assoc_size, | |
1404 | aead_parms.ret_iv_len, | |
1405 | rctx->is_encrypt)) | |
1406 | rx_frag_num++; | |
1407 | ||
1408 | aead_parms.iv_len = spu->spu_aead_ivlen(ctx->cipher.mode, | |
1409 | rctx->iv_ctr_len); | |
1410 | ||
1411 | if (ctx->auth.alg == HASH_ALG_AES) | |
a2e5d408 | 1412 | hash_parms.type = (enum hash_type)ctx->cipher_type; |
9d12ba86 RR |
1413 | |
1414 | /* General case AAD padding (CCM and RFC4543 special cases below) */ | |
1415 | aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1416 | aead_parms.assoc_size); | |
1417 | ||
1418 | /* General case data padding (CCM decrypt special case below) */ | |
1419 | aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1420 | chunksize); | |
1421 | ||
1422 | if (ctx->cipher.mode == CIPHER_MODE_CCM) { | |
1423 | /* | |
1424 | * for CCM, AAD len + 2 (rather than AAD len) needs to be | |
1425 | * 128-bit aligned | |
1426 | */ | |
1427 | aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len( | |
1428 | ctx->cipher.mode, | |
1429 | aead_parms.assoc_size + 2); | |
1430 | ||
1431 | /* | |
1432 | * And when decrypting CCM, need to pad without including | |
1433 | * size of ICV which is tacked on to end of chunk | |
1434 | */ | |
1435 | if (!rctx->is_encrypt) | |
1436 | aead_parms.data_pad_len = | |
1437 | spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1438 | chunksize - digestsize); | |
1439 | ||
1440 | /* CCM also requires software to rewrite portions of IV: */ | |
1441 | spu->spu_ccm_update_iv(digestsize, &cipher_parms, req->assoclen, | |
1442 | chunksize, rctx->is_encrypt, | |
1443 | ctx->is_esp); | |
1444 | } | |
1445 | ||
1446 | if (ctx->is_rfc4543) { | |
1447 | /* | |
1448 | * RFC4543: data is included in AAD, so don't pad after AAD | |
1449 | * and pad data based on both AAD + data size | |
1450 | */ | |
1451 | aead_parms.aad_pad_len = 0; | |
1452 | if (!rctx->is_encrypt) | |
1453 | aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len( | |
1454 | ctx->cipher.mode, | |
1455 | aead_parms.assoc_size + chunksize - | |
1456 | digestsize); | |
1457 | else | |
1458 | aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len( | |
1459 | ctx->cipher.mode, | |
1460 | aead_parms.assoc_size + chunksize); | |
1461 | ||
1462 | req_opts.is_rfc4543 = true; | |
1463 | } | |
1464 | ||
1465 | if (spu_req_incl_icv(ctx->cipher.mode, rctx->is_encrypt)) { | |
1466 | incl_icv = true; | |
1467 | tx_frag_num++; | |
1468 | /* Copy ICV from end of src scatterlist to digest buf */ | |
1469 | sg_copy_part_to_buf(req->src, rctx->msg_buf.digest, digestsize, | |
1470 | req->assoclen + rctx->total_sent - | |
1471 | digestsize); | |
1472 | } | |
1473 | ||
1474 | atomic64_add(chunksize, &iproc_priv.bytes_out); | |
1475 | ||
1476 | flow_log("%s()-sent chunksize:%u\n", __func__, chunksize); | |
1477 | ||
1478 | /* Prepend SPU header with type 3 BCM header */ | |
1479 | memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN); | |
1480 | ||
1481 | spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr + | |
1482 | BCM_HDR_LEN, &req_opts, | |
1483 | &cipher_parms, &hash_parms, | |
1484 | &aead_parms, chunksize); | |
1485 | ||
1486 | /* Determine total length of padding. Put all padding in one buffer. */ | |
1487 | db_size = spu_real_db_size(aead_parms.assoc_size, aead_parms.iv_len, 0, | |
1488 | chunksize, aead_parms.aad_pad_len, | |
1489 | aead_parms.data_pad_len, 0); | |
1490 | ||
1491 | stat_pad_len = spu->spu_wordalign_padlen(db_size); | |
1492 | ||
1493 | if (stat_pad_len) | |
1494 | rx_frag_num++; | |
1495 | pad_len = aead_parms.data_pad_len + stat_pad_len; | |
1496 | if (pad_len) { | |
1497 | tx_frag_num++; | |
1498 | spu->spu_request_pad(rctx->msg_buf.spu_req_pad, | |
1499 | aead_parms.data_pad_len, 0, | |
1500 | ctx->auth.alg, ctx->auth.mode, | |
1501 | rctx->total_sent, stat_pad_len); | |
1502 | } | |
1503 | ||
1504 | spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
1505 | spu_hdr_len); | |
1506 | dump_sg(rctx->assoc, 0, aead_parms.assoc_size); | |
1507 | packet_dump(" aead iv: ", rctx->msg_buf.iv_ctr, aead_parms.iv_len); | |
1508 | packet_log("BD:\n"); | |
1509 | dump_sg(rctx->src_sg, rctx->src_skip, chunksize); | |
1510 | packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len); | |
1511 | ||
1512 | /* | |
1513 | * Build mailbox message containing SPU request msg and rx buffers | |
1514 | * to catch response message | |
1515 | */ | |
1516 | memset(mssg, 0, sizeof(*mssg)); | |
1517 | mssg->type = BRCM_MESSAGE_SPU; | |
1518 | mssg->ctx = rctx; /* Will be returned in response */ | |
1519 | ||
1520 | /* Create rx scatterlist to catch result */ | |
1521 | rx_frag_num += rctx->dst_nents; | |
1522 | resp_len = chunksize; | |
1523 | ||
1524 | /* | |
1525 | * Always catch ICV in separate buffer. Have to for GCM/CCM because of | |
1526 | * padding. Have to for SHA-224 and other truncated SHAs because SPU | |
1527 | * sends entire digest back. | |
1528 | */ | |
1529 | rx_frag_num++; | |
1530 | ||
1531 | if (((ctx->cipher.mode == CIPHER_MODE_GCM) || | |
1532 | (ctx->cipher.mode == CIPHER_MODE_CCM)) && !rctx->is_encrypt) { | |
1533 | /* | |
1534 | * Input is ciphertxt plus ICV, but ICV not incl | |
1535 | * in output. | |
1536 | */ | |
1537 | resp_len -= ctx->digestsize; | |
1538 | if (resp_len == 0) | |
1539 | /* no rx frags to catch output data */ | |
1540 | rx_frag_num -= rctx->dst_nents; | |
1541 | } | |
1542 | ||
1543 | err = spu_aead_rx_sg_create(mssg, req, rctx, rx_frag_num, | |
1544 | aead_parms.assoc_size, | |
1545 | aead_parms.ret_iv_len, resp_len, digestsize, | |
1546 | stat_pad_len); | |
1547 | if (err) | |
1548 | return err; | |
1549 | ||
1550 | /* Create tx scatterlist containing SPU request message */ | |
1551 | tx_frag_num += rctx->src_nents; | |
1552 | tx_frag_num += assoc_nents; | |
1553 | if (aead_parms.aad_pad_len) | |
1554 | tx_frag_num++; | |
1555 | if (aead_parms.iv_len) | |
1556 | tx_frag_num++; | |
1557 | if (spu->spu_tx_status_len()) | |
1558 | tx_frag_num++; | |
1559 | err = spu_aead_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len, | |
1560 | rctx->assoc, aead_parms.assoc_size, | |
1561 | assoc_nents, aead_parms.iv_len, chunksize, | |
1562 | aead_parms.aad_pad_len, pad_len, incl_icv); | |
1563 | if (err) | |
1564 | return err; | |
1565 | ||
f0e2ce58 | 1566 | err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx); |
1567 | if (unlikely(err < 0)) | |
9d12ba86 | 1568 | return err; |
9d12ba86 RR |
1569 | |
1570 | return -EINPROGRESS; | |
1571 | } | |
1572 | ||
1573 | /** | |
1574 | * handle_aead_resp() - Process a SPU response message for an AEAD request. | |
1575 | * @rctx: Crypto request context | |
1576 | */ | |
1577 | static void handle_aead_resp(struct iproc_reqctx_s *rctx) | |
1578 | { | |
1579 | struct spu_hw *spu = &iproc_priv.spu; | |
1580 | struct crypto_async_request *areq = rctx->parent; | |
1581 | struct aead_request *req = container_of(areq, | |
1582 | struct aead_request, base); | |
1583 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1584 | u32 payload_len; | |
1585 | unsigned int icv_offset; | |
1586 | u32 result_len; | |
1587 | ||
1588 | /* See how much data was returned */ | |
1589 | payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr); | |
1590 | flow_log("payload_len %u\n", payload_len); | |
1591 | ||
1592 | /* only count payload */ | |
1593 | atomic64_add(payload_len, &iproc_priv.bytes_in); | |
1594 | ||
1595 | if (req->assoclen) | |
1596 | packet_dump(" assoc_data ", rctx->msg_buf.a.resp_aad, | |
1597 | req->assoclen); | |
1598 | ||
1599 | /* | |
1600 | * Copy the ICV back to the destination | |
1601 | * buffer. In decrypt case, SPU gives us back the digest, but crypto | |
1602 | * API doesn't expect ICV in dst buffer. | |
1603 | */ | |
1604 | result_len = req->cryptlen; | |
1605 | if (rctx->is_encrypt) { | |
1606 | icv_offset = req->assoclen + rctx->total_sent; | |
1607 | packet_dump(" ICV: ", rctx->msg_buf.digest, ctx->digestsize); | |
1608 | flow_log("copying ICV to dst sg at offset %u\n", icv_offset); | |
1609 | sg_copy_part_from_buf(req->dst, rctx->msg_buf.digest, | |
1610 | ctx->digestsize, icv_offset); | |
1611 | result_len += ctx->digestsize; | |
1612 | } | |
1613 | ||
1614 | packet_log("response data: "); | |
1615 | dump_sg(req->dst, req->assoclen, result_len); | |
1616 | ||
1617 | atomic_inc(&iproc_priv.op_counts[SPU_OP_AEAD]); | |
1618 | if (ctx->cipher.alg == CIPHER_ALG_AES) { | |
1619 | if (ctx->cipher.mode == CIPHER_MODE_CCM) | |
1620 | atomic_inc(&iproc_priv.aead_cnt[AES_CCM]); | |
1621 | else if (ctx->cipher.mode == CIPHER_MODE_GCM) | |
1622 | atomic_inc(&iproc_priv.aead_cnt[AES_GCM]); | |
1623 | else | |
1624 | atomic_inc(&iproc_priv.aead_cnt[AUTHENC]); | |
1625 | } else { | |
1626 | atomic_inc(&iproc_priv.aead_cnt[AUTHENC]); | |
1627 | } | |
1628 | } | |
1629 | ||
1630 | /** | |
1631 | * spu_chunk_cleanup() - Do cleanup after processing one chunk of a request | |
1632 | * @rctx: request context | |
1633 | * | |
1634 | * Mailbox scatterlists are allocated for each chunk. So free them after | |
1635 | * processing each chunk. | |
1636 | */ | |
1637 | static void spu_chunk_cleanup(struct iproc_reqctx_s *rctx) | |
1638 | { | |
1639 | /* mailbox message used to tx request */ | |
1640 | struct brcm_message *mssg = &rctx->mb_mssg; | |
1641 | ||
1642 | kfree(mssg->spu.src); | |
1643 | kfree(mssg->spu.dst); | |
1644 | memset(mssg, 0, sizeof(struct brcm_message)); | |
1645 | } | |
1646 | ||
1647 | /** | |
1648 | * finish_req() - Used to invoke the complete callback from the requester when | |
1649 | * a request has been handled asynchronously. | |
1650 | * @rctx: Request context | |
1651 | * @err: Indicates whether the request was successful or not | |
1652 | * | |
1653 | * Ensures that cleanup has been done for request | |
1654 | */ | |
1655 | static void finish_req(struct iproc_reqctx_s *rctx, int err) | |
1656 | { | |
1657 | struct crypto_async_request *areq = rctx->parent; | |
1658 | ||
1659 | flow_log("%s() err:%d\n\n", __func__, err); | |
1660 | ||
1661 | /* No harm done if already called */ | |
1662 | spu_chunk_cleanup(rctx); | |
1663 | ||
1664 | if (areq) | |
1665 | areq->complete(areq, err); | |
1666 | } | |
1667 | ||
1668 | /** | |
1669 | * spu_rx_callback() - Callback from mailbox framework with a SPU response. | |
1670 | * @cl: mailbox client structure for SPU driver | |
1671 | * @msg: mailbox message containing SPU response | |
1672 | */ | |
1673 | static void spu_rx_callback(struct mbox_client *cl, void *msg) | |
1674 | { | |
1675 | struct spu_hw *spu = &iproc_priv.spu; | |
1676 | struct brcm_message *mssg = msg; | |
1677 | struct iproc_reqctx_s *rctx; | |
1678 | struct iproc_ctx_s *ctx; | |
1679 | struct crypto_async_request *areq; | |
1680 | int err = 0; | |
1681 | ||
1682 | rctx = mssg->ctx; | |
1683 | if (unlikely(!rctx)) { | |
1684 | /* This is fatal */ | |
1685 | pr_err("%s(): no request context", __func__); | |
1686 | err = -EFAULT; | |
1687 | goto cb_finish; | |
1688 | } | |
1689 | areq = rctx->parent; | |
1690 | ctx = rctx->ctx; | |
1691 | ||
1692 | /* process the SPU status */ | |
1693 | err = spu->spu_status_process(rctx->msg_buf.rx_stat); | |
1694 | if (err != 0) { | |
1695 | if (err == SPU_INVALID_ICV) | |
1696 | atomic_inc(&iproc_priv.bad_icv); | |
1697 | err = -EBADMSG; | |
1698 | goto cb_finish; | |
1699 | } | |
1700 | ||
1701 | /* Process the SPU response message */ | |
1702 | switch (rctx->ctx->alg->type) { | |
1703 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
1704 | handle_ablkcipher_resp(rctx); | |
1705 | break; | |
1706 | case CRYPTO_ALG_TYPE_AHASH: | |
1707 | handle_ahash_resp(rctx); | |
1708 | break; | |
1709 | case CRYPTO_ALG_TYPE_AEAD: | |
1710 | handle_aead_resp(rctx); | |
1711 | break; | |
1712 | default: | |
1713 | err = -EINVAL; | |
1714 | goto cb_finish; | |
1715 | } | |
1716 | ||
1717 | /* | |
1718 | * If this response does not complete the request, then send the next | |
1719 | * request chunk. | |
1720 | */ | |
1721 | if (rctx->total_sent < rctx->total_todo) { | |
1722 | /* Deallocate anything specific to previous chunk */ | |
1723 | spu_chunk_cleanup(rctx); | |
1724 | ||
1725 | switch (rctx->ctx->alg->type) { | |
1726 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
1727 | err = handle_ablkcipher_req(rctx); | |
1728 | break; | |
1729 | case CRYPTO_ALG_TYPE_AHASH: | |
1730 | err = handle_ahash_req(rctx); | |
1731 | if (err == -EAGAIN) | |
1732 | /* | |
1733 | * we saved data in hash carry, but tell crypto | |
1734 | * API we successfully completed request. | |
1735 | */ | |
1736 | err = 0; | |
1737 | break; | |
1738 | case CRYPTO_ALG_TYPE_AEAD: | |
1739 | err = handle_aead_req(rctx); | |
1740 | break; | |
1741 | default: | |
1742 | err = -EINVAL; | |
1743 | } | |
1744 | ||
1745 | if (err == -EINPROGRESS) | |
1746 | /* Successfully submitted request for next chunk */ | |
1747 | return; | |
1748 | } | |
1749 | ||
1750 | cb_finish: | |
1751 | finish_req(rctx, err); | |
1752 | } | |
1753 | ||
1754 | /* ==================== Kernel Cryptographic API ==================== */ | |
1755 | ||
1756 | /** | |
1757 | * ablkcipher_enqueue() - Handle ablkcipher encrypt or decrypt request. | |
1758 | * @req: Crypto API request | |
1759 | * @encrypt: true if encrypting; false if decrypting | |
1760 | * | |
1761 | * Return: -EINPROGRESS if request accepted and result will be returned | |
1762 | * asynchronously | |
1763 | * < 0 if an error | |
1764 | */ | |
1765 | static int ablkcipher_enqueue(struct ablkcipher_request *req, bool encrypt) | |
1766 | { | |
1767 | struct iproc_reqctx_s *rctx = ablkcipher_request_ctx(req); | |
1768 | struct iproc_ctx_s *ctx = | |
1769 | crypto_ablkcipher_ctx(crypto_ablkcipher_reqtfm(req)); | |
1770 | int err; | |
1771 | ||
1772 | flow_log("%s() enc:%u\n", __func__, encrypt); | |
1773 | ||
1774 | rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
1775 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
1776 | rctx->parent = &req->base; | |
1777 | rctx->is_encrypt = encrypt; | |
1778 | rctx->bd_suppress = false; | |
1779 | rctx->total_todo = req->nbytes; | |
1780 | rctx->src_sent = 0; | |
1781 | rctx->total_sent = 0; | |
1782 | rctx->total_received = 0; | |
1783 | rctx->ctx = ctx; | |
1784 | ||
1785 | /* Initialize current position in src and dst scatterlists */ | |
1786 | rctx->src_sg = req->src; | |
1787 | rctx->src_nents = 0; | |
1788 | rctx->src_skip = 0; | |
1789 | rctx->dst_sg = req->dst; | |
1790 | rctx->dst_nents = 0; | |
1791 | rctx->dst_skip = 0; | |
1792 | ||
1793 | if (ctx->cipher.mode == CIPHER_MODE_CBC || | |
1794 | ctx->cipher.mode == CIPHER_MODE_CTR || | |
1795 | ctx->cipher.mode == CIPHER_MODE_OFB || | |
1796 | ctx->cipher.mode == CIPHER_MODE_XTS || | |
1797 | ctx->cipher.mode == CIPHER_MODE_GCM || | |
1798 | ctx->cipher.mode == CIPHER_MODE_CCM) { | |
1799 | rctx->iv_ctr_len = | |
1800 | crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(req)); | |
1801 | memcpy(rctx->msg_buf.iv_ctr, req->info, rctx->iv_ctr_len); | |
1802 | } else { | |
1803 | rctx->iv_ctr_len = 0; | |
1804 | } | |
1805 | ||
1806 | /* Choose a SPU to process this request */ | |
1807 | rctx->chan_idx = select_channel(); | |
1808 | err = handle_ablkcipher_req(rctx); | |
1809 | if (err != -EINPROGRESS) | |
1810 | /* synchronous result */ | |
1811 | spu_chunk_cleanup(rctx); | |
1812 | ||
1813 | return err; | |
1814 | } | |
1815 | ||
1816 | static int des_setkey(struct crypto_ablkcipher *cipher, const u8 *key, | |
1817 | unsigned int keylen) | |
1818 | { | |
1819 | struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher); | |
1820 | u32 tmp[DES_EXPKEY_WORDS]; | |
1821 | ||
1822 | if (keylen == DES_KEY_SIZE) { | |
1823 | if (des_ekey(tmp, key) == 0) { | |
1824 | if (crypto_ablkcipher_get_flags(cipher) & | |
1825 | CRYPTO_TFM_REQ_WEAK_KEY) { | |
1826 | u32 flags = CRYPTO_TFM_RES_WEAK_KEY; | |
1827 | ||
1828 | crypto_ablkcipher_set_flags(cipher, flags); | |
1829 | return -EINVAL; | |
1830 | } | |
1831 | } | |
1832 | ||
1833 | ctx->cipher_type = CIPHER_TYPE_DES; | |
1834 | } else { | |
1835 | crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
1836 | return -EINVAL; | |
1837 | } | |
1838 | return 0; | |
1839 | } | |
1840 | ||
1841 | static int threedes_setkey(struct crypto_ablkcipher *cipher, const u8 *key, | |
1842 | unsigned int keylen) | |
1843 | { | |
1844 | struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher); | |
1845 | ||
1846 | if (keylen == (DES_KEY_SIZE * 3)) { | |
1847 | const u32 *K = (const u32 *)key; | |
1848 | u32 flags = CRYPTO_TFM_RES_BAD_KEY_SCHED; | |
1849 | ||
1850 | if (!((K[0] ^ K[2]) | (K[1] ^ K[3])) || | |
1851 | !((K[2] ^ K[4]) | (K[3] ^ K[5]))) { | |
1852 | crypto_ablkcipher_set_flags(cipher, flags); | |
1853 | return -EINVAL; | |
1854 | } | |
1855 | ||
1856 | ctx->cipher_type = CIPHER_TYPE_3DES; | |
1857 | } else { | |
1858 | crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
1859 | return -EINVAL; | |
1860 | } | |
1861 | return 0; | |
1862 | } | |
1863 | ||
1864 | static int aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key, | |
1865 | unsigned int keylen) | |
1866 | { | |
1867 | struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher); | |
1868 | ||
1869 | if (ctx->cipher.mode == CIPHER_MODE_XTS) | |
1870 | /* XTS includes two keys of equal length */ | |
1871 | keylen = keylen / 2; | |
1872 | ||
1873 | switch (keylen) { | |
1874 | case AES_KEYSIZE_128: | |
1875 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
1876 | break; | |
1877 | case AES_KEYSIZE_192: | |
1878 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
1879 | break; | |
1880 | case AES_KEYSIZE_256: | |
1881 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
1882 | break; | |
1883 | default: | |
1884 | crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
1885 | return -EINVAL; | |
1886 | } | |
1887 | WARN_ON((ctx->max_payload != SPU_MAX_PAYLOAD_INF) && | |
1888 | ((ctx->max_payload % AES_BLOCK_SIZE) != 0)); | |
1889 | return 0; | |
1890 | } | |
1891 | ||
1892 | static int rc4_setkey(struct crypto_ablkcipher *cipher, const u8 *key, | |
1893 | unsigned int keylen) | |
1894 | { | |
1895 | struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher); | |
1896 | int i; | |
1897 | ||
1898 | ctx->enckeylen = ARC4_MAX_KEY_SIZE + ARC4_STATE_SIZE; | |
1899 | ||
1900 | ctx->enckey[0] = 0x00; /* 0x00 */ | |
1901 | ctx->enckey[1] = 0x00; /* i */ | |
1902 | ctx->enckey[2] = 0x00; /* 0x00 */ | |
1903 | ctx->enckey[3] = 0x00; /* j */ | |
1904 | for (i = 0; i < ARC4_MAX_KEY_SIZE; i++) | |
1905 | ctx->enckey[i + ARC4_STATE_SIZE] = key[i % keylen]; | |
1906 | ||
1907 | ctx->cipher_type = CIPHER_TYPE_INIT; | |
1908 | ||
1909 | return 0; | |
1910 | } | |
1911 | ||
1912 | static int ablkcipher_setkey(struct crypto_ablkcipher *cipher, const u8 *key, | |
1913 | unsigned int keylen) | |
1914 | { | |
1915 | struct spu_hw *spu = &iproc_priv.spu; | |
1916 | struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher); | |
1917 | struct spu_cipher_parms cipher_parms; | |
1918 | u32 alloc_len = 0; | |
1919 | int err; | |
1920 | ||
1921 | flow_log("ablkcipher_setkey() keylen: %d\n", keylen); | |
1922 | flow_dump(" key: ", key, keylen); | |
1923 | ||
1924 | switch (ctx->cipher.alg) { | |
1925 | case CIPHER_ALG_DES: | |
1926 | err = des_setkey(cipher, key, keylen); | |
1927 | break; | |
1928 | case CIPHER_ALG_3DES: | |
1929 | err = threedes_setkey(cipher, key, keylen); | |
1930 | break; | |
1931 | case CIPHER_ALG_AES: | |
1932 | err = aes_setkey(cipher, key, keylen); | |
1933 | break; | |
1934 | case CIPHER_ALG_RC4: | |
1935 | err = rc4_setkey(cipher, key, keylen); | |
1936 | break; | |
1937 | default: | |
1938 | pr_err("%s() Error: unknown cipher alg\n", __func__); | |
1939 | err = -EINVAL; | |
1940 | } | |
1941 | if (err) | |
1942 | return err; | |
1943 | ||
1944 | /* RC4 already populated ctx->enkey */ | |
1945 | if (ctx->cipher.alg != CIPHER_ALG_RC4) { | |
1946 | memcpy(ctx->enckey, key, keylen); | |
1947 | ctx->enckeylen = keylen; | |
1948 | } | |
1949 | /* SPU needs XTS keys in the reverse order the crypto API presents */ | |
1950 | if ((ctx->cipher.alg == CIPHER_ALG_AES) && | |
1951 | (ctx->cipher.mode == CIPHER_MODE_XTS)) { | |
1952 | unsigned int xts_keylen = keylen / 2; | |
1953 | ||
1954 | memcpy(ctx->enckey, key + xts_keylen, xts_keylen); | |
1955 | memcpy(ctx->enckey + xts_keylen, key, xts_keylen); | |
1956 | } | |
1957 | ||
1958 | if (spu->spu_type == SPU_TYPE_SPUM) | |
1959 | alloc_len = BCM_HDR_LEN + SPU_HEADER_ALLOC_LEN; | |
1960 | else if (spu->spu_type == SPU_TYPE_SPU2) | |
1961 | alloc_len = BCM_HDR_LEN + SPU2_HEADER_ALLOC_LEN; | |
1962 | memset(ctx->bcm_spu_req_hdr, 0, alloc_len); | |
1963 | cipher_parms.iv_buf = NULL; | |
1964 | cipher_parms.iv_len = crypto_ablkcipher_ivsize(cipher); | |
1965 | flow_log("%s: iv_len %u\n", __func__, cipher_parms.iv_len); | |
1966 | ||
1967 | cipher_parms.alg = ctx->cipher.alg; | |
1968 | cipher_parms.mode = ctx->cipher.mode; | |
1969 | cipher_parms.type = ctx->cipher_type; | |
1970 | cipher_parms.key_buf = ctx->enckey; | |
1971 | cipher_parms.key_len = ctx->enckeylen; | |
1972 | ||
1973 | /* Prepend SPU request message with BCM header */ | |
1974 | memcpy(ctx->bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN); | |
1975 | ctx->spu_req_hdr_len = | |
1976 | spu->spu_cipher_req_init(ctx->bcm_spu_req_hdr + BCM_HDR_LEN, | |
1977 | &cipher_parms); | |
1978 | ||
1979 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, | |
1980 | ctx->enckeylen, | |
1981 | false); | |
1982 | ||
1983 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_CIPHER]); | |
1984 | ||
1985 | return 0; | |
1986 | } | |
1987 | ||
1988 | static int ablkcipher_encrypt(struct ablkcipher_request *req) | |
1989 | { | |
1990 | flow_log("ablkcipher_encrypt() nbytes:%u\n", req->nbytes); | |
1991 | ||
1992 | return ablkcipher_enqueue(req, true); | |
1993 | } | |
1994 | ||
1995 | static int ablkcipher_decrypt(struct ablkcipher_request *req) | |
1996 | { | |
1997 | flow_log("ablkcipher_decrypt() nbytes:%u\n", req->nbytes); | |
1998 | return ablkcipher_enqueue(req, false); | |
1999 | } | |
2000 | ||
2001 | static int ahash_enqueue(struct ahash_request *req) | |
2002 | { | |
2003 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2004 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2005 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2006 | int err = 0; | |
2007 | const char *alg_name; | |
2008 | ||
2009 | flow_log("ahash_enqueue() nbytes:%u\n", req->nbytes); | |
2010 | ||
2011 | rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2012 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2013 | rctx->parent = &req->base; | |
2014 | rctx->ctx = ctx; | |
2015 | rctx->bd_suppress = true; | |
2016 | memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message)); | |
2017 | ||
2018 | /* Initialize position in src scatterlist */ | |
2019 | rctx->src_sg = req->src; | |
2020 | rctx->src_skip = 0; | |
2021 | rctx->src_nents = 0; | |
2022 | rctx->dst_sg = NULL; | |
2023 | rctx->dst_skip = 0; | |
2024 | rctx->dst_nents = 0; | |
2025 | ||
2026 | /* SPU2 hardware does not compute hash of zero length data */ | |
2027 | if ((rctx->is_final == 1) && (rctx->total_todo == 0) && | |
2028 | (iproc_priv.spu.spu_type == SPU_TYPE_SPU2)) { | |
2029 | alg_name = crypto_tfm_alg_name(crypto_ahash_tfm(tfm)); | |
2030 | flow_log("Doing %sfinal %s zero-len hash request in software\n", | |
2031 | rctx->is_final ? "" : "non-", alg_name); | |
2032 | err = do_shash((unsigned char *)alg_name, req->result, | |
2033 | NULL, 0, NULL, 0, ctx->authkey, | |
2034 | ctx->authkeylen); | |
2035 | if (err < 0) | |
2036 | flow_log("Hash request failed with error %d\n", err); | |
2037 | return err; | |
2038 | } | |
2039 | /* Choose a SPU to process this request */ | |
2040 | rctx->chan_idx = select_channel(); | |
2041 | ||
2042 | err = handle_ahash_req(rctx); | |
2043 | if (err != -EINPROGRESS) | |
2044 | /* synchronous result */ | |
2045 | spu_chunk_cleanup(rctx); | |
2046 | ||
2047 | if (err == -EAGAIN) | |
2048 | /* | |
2049 | * we saved data in hash carry, but tell crypto API | |
2050 | * we successfully completed request. | |
2051 | */ | |
2052 | err = 0; | |
2053 | ||
2054 | return err; | |
2055 | } | |
2056 | ||
2057 | static int __ahash_init(struct ahash_request *req) | |
2058 | { | |
2059 | struct spu_hw *spu = &iproc_priv.spu; | |
2060 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2061 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2062 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2063 | ||
2064 | flow_log("%s()\n", __func__); | |
2065 | ||
2066 | /* Initialize the context */ | |
2067 | rctx->hash_carry_len = 0; | |
2068 | rctx->is_final = 0; | |
2069 | ||
2070 | rctx->total_todo = 0; | |
2071 | rctx->src_sent = 0; | |
2072 | rctx->total_sent = 0; | |
2073 | rctx->total_received = 0; | |
2074 | ||
2075 | ctx->digestsize = crypto_ahash_digestsize(tfm); | |
2076 | /* If we add a hash whose digest is larger, catch it here. */ | |
2077 | WARN_ON(ctx->digestsize > MAX_DIGEST_SIZE); | |
2078 | ||
2079 | rctx->is_sw_hmac = false; | |
2080 | ||
2081 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, 0, | |
2082 | true); | |
2083 | ||
2084 | return 0; | |
2085 | } | |
2086 | ||
2087 | /** | |
2088 | * spu_no_incr_hash() - Determine whether incremental hashing is supported. | |
2089 | * @ctx: Crypto session context | |
2090 | * | |
2091 | * SPU-2 does not support incremental hashing (we'll have to revisit and | |
2092 | * condition based on chip revision or device tree entry if future versions do | |
2093 | * support incremental hash) | |
2094 | * | |
2095 | * SPU-M also doesn't support incremental hashing of AES-XCBC | |
2096 | * | |
2097 | * Return: true if incremental hashing is not supported | |
2098 | * false otherwise | |
2099 | */ | |
2100 | bool spu_no_incr_hash(struct iproc_ctx_s *ctx) | |
2101 | { | |
2102 | struct spu_hw *spu = &iproc_priv.spu; | |
2103 | ||
2104 | if (spu->spu_type == SPU_TYPE_SPU2) | |
2105 | return true; | |
2106 | ||
2107 | if ((ctx->auth.alg == HASH_ALG_AES) && | |
2108 | (ctx->auth.mode == HASH_MODE_XCBC)) | |
2109 | return true; | |
2110 | ||
2111 | /* Otherwise, incremental hashing is supported */ | |
2112 | return false; | |
2113 | } | |
2114 | ||
2115 | static int ahash_init(struct ahash_request *req) | |
2116 | { | |
2117 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2118 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2119 | const char *alg_name; | |
2120 | struct crypto_shash *hash; | |
2121 | int ret; | |
2122 | gfp_t gfp; | |
2123 | ||
2124 | if (spu_no_incr_hash(ctx)) { | |
2125 | /* | |
2126 | * If we get an incremental hashing request and it's not | |
2127 | * supported by the hardware, we need to handle it in software | |
2128 | * by calling synchronous hash functions. | |
2129 | */ | |
2130 | alg_name = crypto_tfm_alg_name(crypto_ahash_tfm(tfm)); | |
2131 | hash = crypto_alloc_shash(alg_name, 0, 0); | |
2132 | if (IS_ERR(hash)) { | |
2133 | ret = PTR_ERR(hash); | |
2134 | goto err; | |
2135 | } | |
2136 | ||
2137 | gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2138 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2139 | ctx->shash = kmalloc(sizeof(*ctx->shash) + | |
2140 | crypto_shash_descsize(hash), gfp); | |
2141 | if (!ctx->shash) { | |
2142 | ret = -ENOMEM; | |
2143 | goto err_hash; | |
2144 | } | |
2145 | ctx->shash->tfm = hash; | |
2146 | ctx->shash->flags = 0; | |
2147 | ||
2148 | /* Set the key using data we already have from setkey */ | |
2149 | if (ctx->authkeylen > 0) { | |
2150 | ret = crypto_shash_setkey(hash, ctx->authkey, | |
2151 | ctx->authkeylen); | |
2152 | if (ret) | |
2153 | goto err_shash; | |
2154 | } | |
2155 | ||
2156 | /* Initialize hash w/ this key and other params */ | |
2157 | ret = crypto_shash_init(ctx->shash); | |
2158 | if (ret) | |
2159 | goto err_shash; | |
2160 | } else { | |
2161 | /* Otherwise call the internal function which uses SPU hw */ | |
2162 | ret = __ahash_init(req); | |
2163 | } | |
2164 | ||
2165 | return ret; | |
2166 | ||
2167 | err_shash: | |
2168 | kfree(ctx->shash); | |
2169 | err_hash: | |
2170 | crypto_free_shash(hash); | |
2171 | err: | |
2172 | return ret; | |
2173 | } | |
2174 | ||
2175 | static int __ahash_update(struct ahash_request *req) | |
2176 | { | |
2177 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2178 | ||
2179 | flow_log("ahash_update() nbytes:%u\n", req->nbytes); | |
2180 | ||
2181 | if (!req->nbytes) | |
2182 | return 0; | |
2183 | rctx->total_todo += req->nbytes; | |
2184 | rctx->src_sent = 0; | |
2185 | ||
2186 | return ahash_enqueue(req); | |
2187 | } | |
2188 | ||
2189 | static int ahash_update(struct ahash_request *req) | |
2190 | { | |
2191 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2192 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2193 | u8 *tmpbuf; | |
2194 | int ret; | |
2195 | int nents; | |
2196 | gfp_t gfp; | |
2197 | ||
2198 | if (spu_no_incr_hash(ctx)) { | |
2199 | /* | |
2200 | * If we get an incremental hashing request and it's not | |
2201 | * supported by the hardware, we need to handle it in software | |
2202 | * by calling synchronous hash functions. | |
2203 | */ | |
2204 | if (req->src) | |
2205 | nents = sg_nents(req->src); | |
2206 | else | |
2207 | return -EINVAL; | |
2208 | ||
2209 | /* Copy data from req scatterlist to tmp buffer */ | |
2210 | gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2211 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2212 | tmpbuf = kmalloc(req->nbytes, gfp); | |
2213 | if (!tmpbuf) | |
2214 | return -ENOMEM; | |
2215 | ||
2216 | if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) != | |
2217 | req->nbytes) { | |
2218 | kfree(tmpbuf); | |
2219 | return -EINVAL; | |
2220 | } | |
2221 | ||
2222 | /* Call synchronous update */ | |
2223 | ret = crypto_shash_update(ctx->shash, tmpbuf, req->nbytes); | |
2224 | kfree(tmpbuf); | |
2225 | } else { | |
2226 | /* Otherwise call the internal function which uses SPU hw */ | |
2227 | ret = __ahash_update(req); | |
2228 | } | |
2229 | ||
2230 | return ret; | |
2231 | } | |
2232 | ||
2233 | static int __ahash_final(struct ahash_request *req) | |
2234 | { | |
2235 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2236 | ||
2237 | flow_log("ahash_final() nbytes:%u\n", req->nbytes); | |
2238 | ||
2239 | rctx->is_final = 1; | |
2240 | ||
2241 | return ahash_enqueue(req); | |
2242 | } | |
2243 | ||
2244 | static int ahash_final(struct ahash_request *req) | |
2245 | { | |
2246 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2247 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2248 | int ret; | |
2249 | ||
2250 | if (spu_no_incr_hash(ctx)) { | |
2251 | /* | |
2252 | * If we get an incremental hashing request and it's not | |
2253 | * supported by the hardware, we need to handle it in software | |
2254 | * by calling synchronous hash functions. | |
2255 | */ | |
2256 | ret = crypto_shash_final(ctx->shash, req->result); | |
2257 | ||
2258 | /* Done with hash, can deallocate it now */ | |
2259 | crypto_free_shash(ctx->shash->tfm); | |
2260 | kfree(ctx->shash); | |
2261 | ||
2262 | } else { | |
2263 | /* Otherwise call the internal function which uses SPU hw */ | |
2264 | ret = __ahash_final(req); | |
2265 | } | |
2266 | ||
2267 | return ret; | |
2268 | } | |
2269 | ||
2270 | static int __ahash_finup(struct ahash_request *req) | |
2271 | { | |
2272 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2273 | ||
2274 | flow_log("ahash_finup() nbytes:%u\n", req->nbytes); | |
2275 | ||
2276 | rctx->total_todo += req->nbytes; | |
2277 | rctx->src_sent = 0; | |
2278 | rctx->is_final = 1; | |
2279 | ||
2280 | return ahash_enqueue(req); | |
2281 | } | |
2282 | ||
2283 | static int ahash_finup(struct ahash_request *req) | |
2284 | { | |
2285 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2286 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2287 | u8 *tmpbuf; | |
2288 | int ret; | |
2289 | int nents; | |
2290 | gfp_t gfp; | |
2291 | ||
2292 | if (spu_no_incr_hash(ctx)) { | |
2293 | /* | |
2294 | * If we get an incremental hashing request and it's not | |
2295 | * supported by the hardware, we need to handle it in software | |
2296 | * by calling synchronous hash functions. | |
2297 | */ | |
2298 | if (req->src) { | |
2299 | nents = sg_nents(req->src); | |
2300 | } else { | |
2301 | ret = -EINVAL; | |
2302 | goto ahash_finup_exit; | |
2303 | } | |
2304 | ||
2305 | /* Copy data from req scatterlist to tmp buffer */ | |
2306 | gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2307 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2308 | tmpbuf = kmalloc(req->nbytes, gfp); | |
2309 | if (!tmpbuf) { | |
2310 | ret = -ENOMEM; | |
2311 | goto ahash_finup_exit; | |
2312 | } | |
2313 | ||
2314 | if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) != | |
2315 | req->nbytes) { | |
2316 | ret = -EINVAL; | |
2317 | goto ahash_finup_free; | |
2318 | } | |
2319 | ||
2320 | /* Call synchronous update */ | |
2321 | ret = crypto_shash_finup(ctx->shash, tmpbuf, req->nbytes, | |
2322 | req->result); | |
9d12ba86 RR |
2323 | } else { |
2324 | /* Otherwise call the internal function which uses SPU hw */ | |
2325 | return __ahash_finup(req); | |
2326 | } | |
2327 | ahash_finup_free: | |
2328 | kfree(tmpbuf); | |
2329 | ||
2330 | ahash_finup_exit: | |
2331 | /* Done with hash, can deallocate it now */ | |
2332 | crypto_free_shash(ctx->shash->tfm); | |
2333 | kfree(ctx->shash); | |
2334 | return ret; | |
2335 | } | |
2336 | ||
2337 | static int ahash_digest(struct ahash_request *req) | |
2338 | { | |
2339 | int err = 0; | |
2340 | ||
2341 | flow_log("ahash_digest() nbytes:%u\n", req->nbytes); | |
2342 | ||
2343 | /* whole thing at once */ | |
2344 | err = __ahash_init(req); | |
2345 | if (!err) | |
2346 | err = __ahash_finup(req); | |
2347 | ||
2348 | return err; | |
2349 | } | |
2350 | ||
2351 | static int ahash_setkey(struct crypto_ahash *ahash, const u8 *key, | |
2352 | unsigned int keylen) | |
2353 | { | |
2354 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash); | |
2355 | ||
2356 | flow_log("%s() ahash:%p key:%p keylen:%u\n", | |
2357 | __func__, ahash, key, keylen); | |
2358 | flow_dump(" key: ", key, keylen); | |
2359 | ||
2360 | if (ctx->auth.alg == HASH_ALG_AES) { | |
2361 | switch (keylen) { | |
2362 | case AES_KEYSIZE_128: | |
2363 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
2364 | break; | |
2365 | case AES_KEYSIZE_192: | |
2366 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
2367 | break; | |
2368 | case AES_KEYSIZE_256: | |
2369 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
2370 | break; | |
2371 | default: | |
2372 | pr_err("%s() Error: Invalid key length\n", __func__); | |
2373 | return -EINVAL; | |
2374 | } | |
2375 | } else { | |
2376 | pr_err("%s() Error: unknown hash alg\n", __func__); | |
2377 | return -EINVAL; | |
2378 | } | |
2379 | memcpy(ctx->authkey, key, keylen); | |
2380 | ctx->authkeylen = keylen; | |
2381 | ||
2382 | return 0; | |
2383 | } | |
2384 | ||
2385 | static int ahash_export(struct ahash_request *req, void *out) | |
2386 | { | |
2387 | const struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2388 | struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)out; | |
2389 | ||
2390 | spu_exp->total_todo = rctx->total_todo; | |
2391 | spu_exp->total_sent = rctx->total_sent; | |
2392 | spu_exp->is_sw_hmac = rctx->is_sw_hmac; | |
2393 | memcpy(spu_exp->hash_carry, rctx->hash_carry, sizeof(rctx->hash_carry)); | |
2394 | spu_exp->hash_carry_len = rctx->hash_carry_len; | |
2395 | memcpy(spu_exp->incr_hash, rctx->incr_hash, sizeof(rctx->incr_hash)); | |
2396 | ||
2397 | return 0; | |
2398 | } | |
2399 | ||
2400 | static int ahash_import(struct ahash_request *req, const void *in) | |
2401 | { | |
2402 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2403 | struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)in; | |
2404 | ||
2405 | rctx->total_todo = spu_exp->total_todo; | |
2406 | rctx->total_sent = spu_exp->total_sent; | |
2407 | rctx->is_sw_hmac = spu_exp->is_sw_hmac; | |
2408 | memcpy(rctx->hash_carry, spu_exp->hash_carry, sizeof(rctx->hash_carry)); | |
2409 | rctx->hash_carry_len = spu_exp->hash_carry_len; | |
2410 | memcpy(rctx->incr_hash, spu_exp->incr_hash, sizeof(rctx->incr_hash)); | |
2411 | ||
2412 | return 0; | |
2413 | } | |
2414 | ||
2415 | static int ahash_hmac_setkey(struct crypto_ahash *ahash, const u8 *key, | |
2416 | unsigned int keylen) | |
2417 | { | |
2418 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash); | |
2419 | unsigned int blocksize = | |
2420 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash)); | |
2421 | unsigned int digestsize = crypto_ahash_digestsize(ahash); | |
2422 | unsigned int index; | |
2423 | int rc; | |
2424 | ||
2425 | flow_log("%s() ahash:%p key:%p keylen:%u blksz:%u digestsz:%u\n", | |
2426 | __func__, ahash, key, keylen, blocksize, digestsize); | |
2427 | flow_dump(" key: ", key, keylen); | |
2428 | ||
2429 | if (keylen > blocksize) { | |
2430 | switch (ctx->auth.alg) { | |
2431 | case HASH_ALG_MD5: | |
2432 | rc = do_shash("md5", ctx->authkey, key, keylen, NULL, | |
2433 | 0, NULL, 0); | |
2434 | break; | |
2435 | case HASH_ALG_SHA1: | |
2436 | rc = do_shash("sha1", ctx->authkey, key, keylen, NULL, | |
2437 | 0, NULL, 0); | |
2438 | break; | |
2439 | case HASH_ALG_SHA224: | |
2440 | rc = do_shash("sha224", ctx->authkey, key, keylen, NULL, | |
2441 | 0, NULL, 0); | |
2442 | break; | |
2443 | case HASH_ALG_SHA256: | |
2444 | rc = do_shash("sha256", ctx->authkey, key, keylen, NULL, | |
2445 | 0, NULL, 0); | |
2446 | break; | |
2447 | case HASH_ALG_SHA384: | |
2448 | rc = do_shash("sha384", ctx->authkey, key, keylen, NULL, | |
2449 | 0, NULL, 0); | |
2450 | break; | |
2451 | case HASH_ALG_SHA512: | |
2452 | rc = do_shash("sha512", ctx->authkey, key, keylen, NULL, | |
2453 | 0, NULL, 0); | |
2454 | break; | |
2455 | case HASH_ALG_SHA3_224: | |
2456 | rc = do_shash("sha3-224", ctx->authkey, key, keylen, | |
2457 | NULL, 0, NULL, 0); | |
2458 | break; | |
2459 | case HASH_ALG_SHA3_256: | |
2460 | rc = do_shash("sha3-256", ctx->authkey, key, keylen, | |
2461 | NULL, 0, NULL, 0); | |
2462 | break; | |
2463 | case HASH_ALG_SHA3_384: | |
2464 | rc = do_shash("sha3-384", ctx->authkey, key, keylen, | |
2465 | NULL, 0, NULL, 0); | |
2466 | break; | |
2467 | case HASH_ALG_SHA3_512: | |
2468 | rc = do_shash("sha3-512", ctx->authkey, key, keylen, | |
2469 | NULL, 0, NULL, 0); | |
2470 | break; | |
2471 | default: | |
2472 | pr_err("%s() Error: unknown hash alg\n", __func__); | |
2473 | return -EINVAL; | |
2474 | } | |
2475 | if (rc < 0) { | |
2476 | pr_err("%s() Error %d computing shash for %s\n", | |
2477 | __func__, rc, hash_alg_name[ctx->auth.alg]); | |
2478 | return rc; | |
2479 | } | |
2480 | ctx->authkeylen = digestsize; | |
2481 | ||
2482 | flow_log(" keylen > digestsize... hashed\n"); | |
2483 | flow_dump(" newkey: ", ctx->authkey, ctx->authkeylen); | |
2484 | } else { | |
2485 | memcpy(ctx->authkey, key, keylen); | |
2486 | ctx->authkeylen = keylen; | |
2487 | } | |
2488 | ||
2489 | /* | |
2490 | * Full HMAC operation in SPUM is not verified, | |
2491 | * So keeping the generation of IPAD, OPAD and | |
2492 | * outer hashing in software. | |
2493 | */ | |
2494 | if (iproc_priv.spu.spu_type == SPU_TYPE_SPUM) { | |
2495 | memcpy(ctx->ipad, ctx->authkey, ctx->authkeylen); | |
2496 | memset(ctx->ipad + ctx->authkeylen, 0, | |
2497 | blocksize - ctx->authkeylen); | |
2498 | ctx->authkeylen = 0; | |
2499 | memcpy(ctx->opad, ctx->ipad, blocksize); | |
2500 | ||
2501 | for (index = 0; index < blocksize; index++) { | |
1126d47d CL |
2502 | ctx->ipad[index] ^= HMAC_IPAD_VALUE; |
2503 | ctx->opad[index] ^= HMAC_OPAD_VALUE; | |
9d12ba86 RR |
2504 | } |
2505 | ||
2506 | flow_dump(" ipad: ", ctx->ipad, blocksize); | |
2507 | flow_dump(" opad: ", ctx->opad, blocksize); | |
2508 | } | |
2509 | ctx->digestsize = digestsize; | |
2510 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_HMAC]); | |
2511 | ||
2512 | return 0; | |
2513 | } | |
2514 | ||
2515 | static int ahash_hmac_init(struct ahash_request *req) | |
2516 | { | |
2517 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2518 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2519 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2520 | unsigned int blocksize = | |
2521 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
2522 | ||
2523 | flow_log("ahash_hmac_init()\n"); | |
2524 | ||
2525 | /* init the context as a hash */ | |
2526 | ahash_init(req); | |
2527 | ||
2528 | if (!spu_no_incr_hash(ctx)) { | |
2529 | /* SPU-M can do incr hashing but needs sw for outer HMAC */ | |
2530 | rctx->is_sw_hmac = true; | |
2531 | ctx->auth.mode = HASH_MODE_HASH; | |
2532 | /* start with a prepended ipad */ | |
2533 | memcpy(rctx->hash_carry, ctx->ipad, blocksize); | |
2534 | rctx->hash_carry_len = blocksize; | |
2535 | rctx->total_todo += blocksize; | |
2536 | } | |
2537 | ||
2538 | return 0; | |
2539 | } | |
2540 | ||
2541 | static int ahash_hmac_update(struct ahash_request *req) | |
2542 | { | |
2543 | flow_log("ahash_hmac_update() nbytes:%u\n", req->nbytes); | |
2544 | ||
2545 | if (!req->nbytes) | |
2546 | return 0; | |
2547 | ||
2548 | return ahash_update(req); | |
2549 | } | |
2550 | ||
2551 | static int ahash_hmac_final(struct ahash_request *req) | |
2552 | { | |
2553 | flow_log("ahash_hmac_final() nbytes:%u\n", req->nbytes); | |
2554 | ||
2555 | return ahash_final(req); | |
2556 | } | |
2557 | ||
2558 | static int ahash_hmac_finup(struct ahash_request *req) | |
2559 | { | |
2560 | flow_log("ahash_hmac_finupl() nbytes:%u\n", req->nbytes); | |
2561 | ||
2562 | return ahash_finup(req); | |
2563 | } | |
2564 | ||
2565 | static int ahash_hmac_digest(struct ahash_request *req) | |
2566 | { | |
2567 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2568 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2569 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2570 | unsigned int blocksize = | |
2571 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
2572 | ||
2573 | flow_log("ahash_hmac_digest() nbytes:%u\n", req->nbytes); | |
2574 | ||
2575 | /* Perform initialization and then call finup */ | |
2576 | __ahash_init(req); | |
2577 | ||
2578 | if (iproc_priv.spu.spu_type == SPU_TYPE_SPU2) { | |
2579 | /* | |
2580 | * SPU2 supports full HMAC implementation in the | |
2581 | * hardware, need not to generate IPAD, OPAD and | |
2582 | * outer hash in software. | |
2583 | * Only for hash key len > hash block size, SPU2 | |
2584 | * expects to perform hashing on the key, shorten | |
2585 | * it to digest size and feed it as hash key. | |
2586 | */ | |
2587 | rctx->is_sw_hmac = false; | |
2588 | ctx->auth.mode = HASH_MODE_HMAC; | |
2589 | } else { | |
2590 | rctx->is_sw_hmac = true; | |
2591 | ctx->auth.mode = HASH_MODE_HASH; | |
2592 | /* start with a prepended ipad */ | |
2593 | memcpy(rctx->hash_carry, ctx->ipad, blocksize); | |
2594 | rctx->hash_carry_len = blocksize; | |
2595 | rctx->total_todo += blocksize; | |
2596 | } | |
2597 | ||
2598 | return __ahash_finup(req); | |
2599 | } | |
2600 | ||
2601 | /* aead helpers */ | |
2602 | ||
2603 | static int aead_need_fallback(struct aead_request *req) | |
2604 | { | |
2605 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2606 | struct spu_hw *spu = &iproc_priv.spu; | |
2607 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2608 | struct iproc_ctx_s *ctx = crypto_aead_ctx(aead); | |
2609 | u32 payload_len; | |
2610 | ||
2611 | /* | |
2612 | * SPU hardware cannot handle the AES-GCM/CCM case where plaintext | |
2613 | * and AAD are both 0 bytes long. So use fallback in this case. | |
2614 | */ | |
2615 | if (((ctx->cipher.mode == CIPHER_MODE_GCM) || | |
2616 | (ctx->cipher.mode == CIPHER_MODE_CCM)) && | |
2617 | (req->assoclen == 0)) { | |
2618 | if ((rctx->is_encrypt && (req->cryptlen == 0)) || | |
2619 | (!rctx->is_encrypt && (req->cryptlen == ctx->digestsize))) { | |
2620 | flow_log("AES GCM/CCM needs fallback for 0 len req\n"); | |
2621 | return 1; | |
2622 | } | |
2623 | } | |
2624 | ||
2625 | /* SPU-M hardware only supports CCM digest size of 8, 12, or 16 bytes */ | |
2626 | if ((ctx->cipher.mode == CIPHER_MODE_CCM) && | |
2627 | (spu->spu_type == SPU_TYPE_SPUM) && | |
2628 | (ctx->digestsize != 8) && (ctx->digestsize != 12) && | |
2629 | (ctx->digestsize != 16)) { | |
b1a4b182 | 2630 | flow_log("%s() AES CCM needs fallback for digest size %d\n", |
9d12ba86 RR |
2631 | __func__, ctx->digestsize); |
2632 | return 1; | |
2633 | } | |
2634 | ||
2635 | /* | |
2636 | * SPU-M on NSP has an issue where AES-CCM hash is not correct | |
2637 | * when AAD size is 0 | |
2638 | */ | |
2639 | if ((ctx->cipher.mode == CIPHER_MODE_CCM) && | |
2640 | (spu->spu_subtype == SPU_SUBTYPE_SPUM_NSP) && | |
2641 | (req->assoclen == 0)) { | |
2642 | flow_log("%s() AES_CCM needs fallback for 0 len AAD on NSP\n", | |
2643 | __func__); | |
2644 | return 1; | |
2645 | } | |
2646 | ||
2647 | payload_len = req->cryptlen; | |
2648 | if (spu->spu_type == SPU_TYPE_SPUM) | |
2649 | payload_len += req->assoclen; | |
2650 | ||
2651 | flow_log("%s() payload len: %u\n", __func__, payload_len); | |
2652 | ||
2653 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
2654 | return 0; | |
2655 | else | |
2656 | return payload_len > ctx->max_payload; | |
2657 | } | |
2658 | ||
2659 | static void aead_complete(struct crypto_async_request *areq, int err) | |
2660 | { | |
2661 | struct aead_request *req = | |
2662 | container_of(areq, struct aead_request, base); | |
2663 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2664 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2665 | ||
2666 | flow_log("%s() err:%d\n", __func__, err); | |
2667 | ||
2668 | areq->tfm = crypto_aead_tfm(aead); | |
2669 | ||
2670 | areq->complete = rctx->old_complete; | |
2671 | areq->data = rctx->old_data; | |
2672 | ||
2673 | areq->complete(areq, err); | |
2674 | } | |
2675 | ||
2676 | static int aead_do_fallback(struct aead_request *req, bool is_encrypt) | |
2677 | { | |
2678 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2679 | struct crypto_tfm *tfm = crypto_aead_tfm(aead); | |
2680 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2681 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
2682 | int err; | |
2683 | u32 req_flags; | |
2684 | ||
2685 | flow_log("%s() enc:%u\n", __func__, is_encrypt); | |
2686 | ||
2687 | if (ctx->fallback_cipher) { | |
2688 | /* Store the cipher tfm and then use the fallback tfm */ | |
2689 | rctx->old_tfm = tfm; | |
2690 | aead_request_set_tfm(req, ctx->fallback_cipher); | |
2691 | /* | |
2692 | * Save the callback and chain ourselves in, so we can restore | |
2693 | * the tfm | |
2694 | */ | |
2695 | rctx->old_complete = req->base.complete; | |
2696 | rctx->old_data = req->base.data; | |
2697 | req_flags = aead_request_flags(req); | |
2698 | aead_request_set_callback(req, req_flags, aead_complete, req); | |
2699 | err = is_encrypt ? crypto_aead_encrypt(req) : | |
2700 | crypto_aead_decrypt(req); | |
2701 | ||
2702 | if (err == 0) { | |
2703 | /* | |
2704 | * fallback was synchronous (did not return | |
2705 | * -EINPROGRESS). So restore request state here. | |
2706 | */ | |
2707 | aead_request_set_callback(req, req_flags, | |
2708 | rctx->old_complete, req); | |
2709 | req->base.data = rctx->old_data; | |
2710 | aead_request_set_tfm(req, aead); | |
2711 | flow_log("%s() fallback completed successfully\n\n", | |
2712 | __func__); | |
2713 | } | |
2714 | } else { | |
2715 | err = -EINVAL; | |
2716 | } | |
2717 | ||
2718 | return err; | |
2719 | } | |
2720 | ||
2721 | static int aead_enqueue(struct aead_request *req, bool is_encrypt) | |
2722 | { | |
2723 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2724 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2725 | struct iproc_ctx_s *ctx = crypto_aead_ctx(aead); | |
2726 | int err; | |
2727 | ||
2728 | flow_log("%s() enc:%u\n", __func__, is_encrypt); | |
2729 | ||
2730 | if (req->assoclen > MAX_ASSOC_SIZE) { | |
2731 | pr_err | |
2732 | ("%s() Error: associated data too long. (%u > %u bytes)\n", | |
2733 | __func__, req->assoclen, MAX_ASSOC_SIZE); | |
2734 | return -EINVAL; | |
2735 | } | |
2736 | ||
2737 | rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2738 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2739 | rctx->parent = &req->base; | |
2740 | rctx->is_encrypt = is_encrypt; | |
2741 | rctx->bd_suppress = false; | |
2742 | rctx->total_todo = req->cryptlen; | |
2743 | rctx->src_sent = 0; | |
2744 | rctx->total_sent = 0; | |
2745 | rctx->total_received = 0; | |
2746 | rctx->is_sw_hmac = false; | |
2747 | rctx->ctx = ctx; | |
2748 | memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message)); | |
2749 | ||
2750 | /* assoc data is at start of src sg */ | |
2751 | rctx->assoc = req->src; | |
2752 | ||
2753 | /* | |
2754 | * Init current position in src scatterlist to be after assoc data. | |
2755 | * src_skip set to buffer offset where data begins. (Assoc data could | |
2756 | * end in the middle of a buffer.) | |
2757 | */ | |
2758 | if (spu_sg_at_offset(req->src, req->assoclen, &rctx->src_sg, | |
2759 | &rctx->src_skip) < 0) { | |
2760 | pr_err("%s() Error: Unable to find start of src data\n", | |
2761 | __func__); | |
2762 | return -EINVAL; | |
2763 | } | |
2764 | ||
2765 | rctx->src_nents = 0; | |
2766 | rctx->dst_nents = 0; | |
2767 | if (req->dst == req->src) { | |
2768 | rctx->dst_sg = rctx->src_sg; | |
2769 | rctx->dst_skip = rctx->src_skip; | |
2770 | } else { | |
2771 | /* | |
2772 | * Expect req->dst to have room for assoc data followed by | |
2773 | * output data and ICV, if encrypt. So initialize dst_sg | |
2774 | * to point beyond assoc len offset. | |
2775 | */ | |
2776 | if (spu_sg_at_offset(req->dst, req->assoclen, &rctx->dst_sg, | |
2777 | &rctx->dst_skip) < 0) { | |
2778 | pr_err("%s() Error: Unable to find start of dst data\n", | |
2779 | __func__); | |
2780 | return -EINVAL; | |
2781 | } | |
2782 | } | |
2783 | ||
2784 | if (ctx->cipher.mode == CIPHER_MODE_CBC || | |
2785 | ctx->cipher.mode == CIPHER_MODE_CTR || | |
2786 | ctx->cipher.mode == CIPHER_MODE_OFB || | |
2787 | ctx->cipher.mode == CIPHER_MODE_XTS || | |
2788 | ctx->cipher.mode == CIPHER_MODE_GCM) { | |
2789 | rctx->iv_ctr_len = | |
2790 | ctx->salt_len + | |
2791 | crypto_aead_ivsize(crypto_aead_reqtfm(req)); | |
2792 | } else if (ctx->cipher.mode == CIPHER_MODE_CCM) { | |
2793 | rctx->iv_ctr_len = CCM_AES_IV_SIZE; | |
2794 | } else { | |
2795 | rctx->iv_ctr_len = 0; | |
2796 | } | |
2797 | ||
2798 | rctx->hash_carry_len = 0; | |
2799 | ||
2800 | flow_log(" src sg: %p\n", req->src); | |
2801 | flow_log(" rctx->src_sg: %p, src_skip %u\n", | |
2802 | rctx->src_sg, rctx->src_skip); | |
2803 | flow_log(" assoc: %p, assoclen %u\n", rctx->assoc, req->assoclen); | |
2804 | flow_log(" dst sg: %p\n", req->dst); | |
2805 | flow_log(" rctx->dst_sg: %p, dst_skip %u\n", | |
2806 | rctx->dst_sg, rctx->dst_skip); | |
2807 | flow_log(" iv_ctr_len:%u\n", rctx->iv_ctr_len); | |
2808 | flow_dump(" iv: ", req->iv, rctx->iv_ctr_len); | |
2809 | flow_log(" authkeylen:%u\n", ctx->authkeylen); | |
2810 | flow_log(" is_esp: %s\n", ctx->is_esp ? "yes" : "no"); | |
2811 | ||
2812 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
2813 | flow_log(" max_payload infinite"); | |
2814 | else | |
2815 | flow_log(" max_payload: %u\n", ctx->max_payload); | |
2816 | ||
2817 | if (unlikely(aead_need_fallback(req))) | |
2818 | return aead_do_fallback(req, is_encrypt); | |
2819 | ||
2820 | /* | |
2821 | * Do memory allocations for request after fallback check, because if we | |
2822 | * do fallback, we won't call finish_req() to dealloc. | |
2823 | */ | |
2824 | if (rctx->iv_ctr_len) { | |
2825 | if (ctx->salt_len) | |
2826 | memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset, | |
2827 | ctx->salt, ctx->salt_len); | |
2828 | memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset + ctx->salt_len, | |
2829 | req->iv, | |
2830 | rctx->iv_ctr_len - ctx->salt_len - ctx->salt_offset); | |
2831 | } | |
2832 | ||
2833 | rctx->chan_idx = select_channel(); | |
2834 | err = handle_aead_req(rctx); | |
2835 | if (err != -EINPROGRESS) | |
2836 | /* synchronous result */ | |
2837 | spu_chunk_cleanup(rctx); | |
2838 | ||
2839 | return err; | |
2840 | } | |
2841 | ||
2842 | static int aead_authenc_setkey(struct crypto_aead *cipher, | |
2843 | const u8 *key, unsigned int keylen) | |
2844 | { | |
2845 | struct spu_hw *spu = &iproc_priv.spu; | |
2846 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
2847 | struct crypto_tfm *tfm = crypto_aead_tfm(cipher); | |
ab57b335 EB |
2848 | struct crypto_authenc_keys keys; |
2849 | int ret; | |
9d12ba86 RR |
2850 | |
2851 | flow_log("%s() aead:%p key:%p keylen:%u\n", __func__, cipher, key, | |
2852 | keylen); | |
2853 | flow_dump(" key: ", key, keylen); | |
2854 | ||
ab57b335 EB |
2855 | ret = crypto_authenc_extractkeys(&keys, key, keylen); |
2856 | if (ret) | |
9d12ba86 | 2857 | goto badkey; |
9d12ba86 | 2858 | |
ab57b335 EB |
2859 | if (keys.enckeylen > MAX_KEY_SIZE || |
2860 | keys.authkeylen > MAX_KEY_SIZE) | |
9d12ba86 RR |
2861 | goto badkey; |
2862 | ||
ab57b335 EB |
2863 | ctx->enckeylen = keys.enckeylen; |
2864 | ctx->authkeylen = keys.authkeylen; | |
9d12ba86 | 2865 | |
ab57b335 | 2866 | memcpy(ctx->enckey, keys.enckey, keys.enckeylen); |
9d12ba86 RR |
2867 | /* May end up padding auth key. So make sure it's zeroed. */ |
2868 | memset(ctx->authkey, 0, sizeof(ctx->authkey)); | |
ab57b335 | 2869 | memcpy(ctx->authkey, keys.authkey, keys.authkeylen); |
9d12ba86 RR |
2870 | |
2871 | switch (ctx->alg->cipher_info.alg) { | |
2872 | case CIPHER_ALG_DES: | |
2873 | if (ctx->enckeylen == DES_KEY_SIZE) { | |
2874 | u32 tmp[DES_EXPKEY_WORDS]; | |
2875 | u32 flags = CRYPTO_TFM_RES_WEAK_KEY; | |
2876 | ||
ab57b335 | 2877 | if (des_ekey(tmp, keys.enckey) == 0) { |
9d12ba86 RR |
2878 | if (crypto_aead_get_flags(cipher) & |
2879 | CRYPTO_TFM_REQ_WEAK_KEY) { | |
2880 | crypto_aead_set_flags(cipher, flags); | |
2881 | return -EINVAL; | |
2882 | } | |
2883 | } | |
2884 | ||
2885 | ctx->cipher_type = CIPHER_TYPE_DES; | |
2886 | } else { | |
2887 | goto badkey; | |
2888 | } | |
2889 | break; | |
2890 | case CIPHER_ALG_3DES: | |
2891 | if (ctx->enckeylen == (DES_KEY_SIZE * 3)) { | |
ab57b335 | 2892 | const u32 *K = (const u32 *)keys.enckey; |
9d12ba86 RR |
2893 | u32 flags = CRYPTO_TFM_RES_BAD_KEY_SCHED; |
2894 | ||
2895 | if (!((K[0] ^ K[2]) | (K[1] ^ K[3])) || | |
2896 | !((K[2] ^ K[4]) | (K[3] ^ K[5]))) { | |
2897 | crypto_aead_set_flags(cipher, flags); | |
2898 | return -EINVAL; | |
2899 | } | |
2900 | ||
2901 | ctx->cipher_type = CIPHER_TYPE_3DES; | |
2902 | } else { | |
2903 | crypto_aead_set_flags(cipher, | |
2904 | CRYPTO_TFM_RES_BAD_KEY_LEN); | |
2905 | return -EINVAL; | |
2906 | } | |
2907 | break; | |
2908 | case CIPHER_ALG_AES: | |
2909 | switch (ctx->enckeylen) { | |
2910 | case AES_KEYSIZE_128: | |
2911 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
2912 | break; | |
2913 | case AES_KEYSIZE_192: | |
2914 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
2915 | break; | |
2916 | case AES_KEYSIZE_256: | |
2917 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
2918 | break; | |
2919 | default: | |
2920 | goto badkey; | |
2921 | } | |
2922 | break; | |
2923 | case CIPHER_ALG_RC4: | |
2924 | ctx->cipher_type = CIPHER_TYPE_INIT; | |
2925 | break; | |
2926 | default: | |
2927 | pr_err("%s() Error: Unknown cipher alg\n", __func__); | |
2928 | return -EINVAL; | |
2929 | } | |
2930 | ||
2931 | flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen, | |
2932 | ctx->authkeylen); | |
2933 | flow_dump(" enc: ", ctx->enckey, ctx->enckeylen); | |
2934 | flow_dump(" auth: ", ctx->authkey, ctx->authkeylen); | |
2935 | ||
2936 | /* setkey the fallback just in case we needto use it */ | |
2937 | if (ctx->fallback_cipher) { | |
2938 | flow_log(" running fallback setkey()\n"); | |
2939 | ||
2940 | ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK; | |
2941 | ctx->fallback_cipher->base.crt_flags |= | |
2942 | tfm->crt_flags & CRYPTO_TFM_REQ_MASK; | |
ab57b335 | 2943 | ret = crypto_aead_setkey(ctx->fallback_cipher, key, keylen); |
9d12ba86 RR |
2944 | if (ret) { |
2945 | flow_log(" fallback setkey() returned:%d\n", ret); | |
2946 | tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK; | |
2947 | tfm->crt_flags |= | |
2948 | (ctx->fallback_cipher->base.crt_flags & | |
2949 | CRYPTO_TFM_RES_MASK); | |
2950 | } | |
2951 | } | |
2952 | ||
2953 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, | |
2954 | ctx->enckeylen, | |
2955 | false); | |
2956 | ||
2957 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]); | |
2958 | ||
2959 | return ret; | |
2960 | ||
2961 | badkey: | |
2962 | ctx->enckeylen = 0; | |
2963 | ctx->authkeylen = 0; | |
2964 | ctx->digestsize = 0; | |
2965 | ||
2966 | crypto_aead_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
2967 | return -EINVAL; | |
2968 | } | |
2969 | ||
2970 | static int aead_gcm_ccm_setkey(struct crypto_aead *cipher, | |
2971 | const u8 *key, unsigned int keylen) | |
2972 | { | |
2973 | struct spu_hw *spu = &iproc_priv.spu; | |
2974 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
2975 | struct crypto_tfm *tfm = crypto_aead_tfm(cipher); | |
2976 | ||
2977 | int ret = 0; | |
2978 | ||
2979 | flow_log("%s() keylen:%u\n", __func__, keylen); | |
2980 | flow_dump(" key: ", key, keylen); | |
2981 | ||
2982 | if (!ctx->is_esp) | |
2983 | ctx->digestsize = keylen; | |
2984 | ||
2985 | ctx->enckeylen = keylen; | |
2986 | ctx->authkeylen = 0; | |
2987 | memcpy(ctx->enckey, key, ctx->enckeylen); | |
2988 | ||
2989 | switch (ctx->enckeylen) { | |
2990 | case AES_KEYSIZE_128: | |
2991 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
2992 | break; | |
2993 | case AES_KEYSIZE_192: | |
2994 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
2995 | break; | |
2996 | case AES_KEYSIZE_256: | |
2997 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
2998 | break; | |
2999 | default: | |
3000 | goto badkey; | |
3001 | } | |
3002 | ||
3003 | flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen, | |
3004 | ctx->authkeylen); | |
3005 | flow_dump(" enc: ", ctx->enckey, ctx->enckeylen); | |
3006 | flow_dump(" auth: ", ctx->authkey, ctx->authkeylen); | |
3007 | ||
3008 | /* setkey the fallback just in case we need to use it */ | |
3009 | if (ctx->fallback_cipher) { | |
3010 | flow_log(" running fallback setkey()\n"); | |
3011 | ||
3012 | ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK; | |
3013 | ctx->fallback_cipher->base.crt_flags |= | |
3014 | tfm->crt_flags & CRYPTO_TFM_REQ_MASK; | |
3015 | ret = crypto_aead_setkey(ctx->fallback_cipher, key, | |
3016 | keylen + ctx->salt_len); | |
3017 | if (ret) { | |
3018 | flow_log(" fallback setkey() returned:%d\n", ret); | |
3019 | tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK; | |
3020 | tfm->crt_flags |= | |
3021 | (ctx->fallback_cipher->base.crt_flags & | |
3022 | CRYPTO_TFM_RES_MASK); | |
3023 | } | |
3024 | } | |
3025 | ||
3026 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, | |
3027 | ctx->enckeylen, | |
3028 | false); | |
3029 | ||
3030 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]); | |
3031 | ||
3032 | flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen, | |
3033 | ctx->authkeylen); | |
3034 | ||
3035 | return ret; | |
3036 | ||
3037 | badkey: | |
3038 | ctx->enckeylen = 0; | |
3039 | ctx->authkeylen = 0; | |
3040 | ctx->digestsize = 0; | |
3041 | ||
3042 | crypto_aead_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
3043 | return -EINVAL; | |
3044 | } | |
3045 | ||
3046 | /** | |
3047 | * aead_gcm_esp_setkey() - setkey() operation for ESP variant of GCM AES. | |
3048 | * @cipher: AEAD structure | |
3049 | * @key: Key followed by 4 bytes of salt | |
3050 | * @keylen: Length of key plus salt, in bytes | |
3051 | * | |
3052 | * Extracts salt from key and stores it to be prepended to IV on each request. | |
3053 | * Digest is always 16 bytes | |
3054 | * | |
3055 | * Return: Value from generic gcm setkey. | |
3056 | */ | |
3057 | static int aead_gcm_esp_setkey(struct crypto_aead *cipher, | |
3058 | const u8 *key, unsigned int keylen) | |
3059 | { | |
3060 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
3061 | ||
3062 | flow_log("%s\n", __func__); | |
3063 | ctx->salt_len = GCM_ESP_SALT_SIZE; | |
3064 | ctx->salt_offset = GCM_ESP_SALT_OFFSET; | |
3065 | memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE); | |
3066 | keylen -= GCM_ESP_SALT_SIZE; | |
3067 | ctx->digestsize = GCM_ESP_DIGESTSIZE; | |
3068 | ctx->is_esp = true; | |
3069 | flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE); | |
3070 | ||
3071 | return aead_gcm_ccm_setkey(cipher, key, keylen); | |
3072 | } | |
3073 | ||
3074 | /** | |
3075 | * rfc4543_gcm_esp_setkey() - setkey operation for RFC4543 variant of GCM/GMAC. | |
3076 | * cipher: AEAD structure | |
3077 | * key: Key followed by 4 bytes of salt | |
3078 | * keylen: Length of key plus salt, in bytes | |
3079 | * | |
3080 | * Extracts salt from key and stores it to be prepended to IV on each request. | |
3081 | * Digest is always 16 bytes | |
3082 | * | |
3083 | * Return: Value from generic gcm setkey. | |
3084 | */ | |
3085 | static int rfc4543_gcm_esp_setkey(struct crypto_aead *cipher, | |
3086 | const u8 *key, unsigned int keylen) | |
3087 | { | |
3088 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
3089 | ||
3090 | flow_log("%s\n", __func__); | |
3091 | ctx->salt_len = GCM_ESP_SALT_SIZE; | |
3092 | ctx->salt_offset = GCM_ESP_SALT_OFFSET; | |
3093 | memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE); | |
3094 | keylen -= GCM_ESP_SALT_SIZE; | |
3095 | ctx->digestsize = GCM_ESP_DIGESTSIZE; | |
3096 | ctx->is_esp = true; | |
3097 | ctx->is_rfc4543 = true; | |
3098 | flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE); | |
3099 | ||
3100 | return aead_gcm_ccm_setkey(cipher, key, keylen); | |
3101 | } | |
3102 | ||
3103 | /** | |
3104 | * aead_ccm_esp_setkey() - setkey() operation for ESP variant of CCM AES. | |
3105 | * @cipher: AEAD structure | |
3106 | * @key: Key followed by 4 bytes of salt | |
3107 | * @keylen: Length of key plus salt, in bytes | |
3108 | * | |
3109 | * Extracts salt from key and stores it to be prepended to IV on each request. | |
3110 | * Digest is always 16 bytes | |
3111 | * | |
3112 | * Return: Value from generic ccm setkey. | |
3113 | */ | |
3114 | static int aead_ccm_esp_setkey(struct crypto_aead *cipher, | |
3115 | const u8 *key, unsigned int keylen) | |
3116 | { | |
3117 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
3118 | ||
3119 | flow_log("%s\n", __func__); | |
3120 | ctx->salt_len = CCM_ESP_SALT_SIZE; | |
3121 | ctx->salt_offset = CCM_ESP_SALT_OFFSET; | |
3122 | memcpy(ctx->salt, key + keylen - CCM_ESP_SALT_SIZE, CCM_ESP_SALT_SIZE); | |
3123 | keylen -= CCM_ESP_SALT_SIZE; | |
3124 | ctx->is_esp = true; | |
3125 | flow_dump("salt: ", ctx->salt, CCM_ESP_SALT_SIZE); | |
3126 | ||
3127 | return aead_gcm_ccm_setkey(cipher, key, keylen); | |
3128 | } | |
3129 | ||
3130 | static int aead_setauthsize(struct crypto_aead *cipher, unsigned int authsize) | |
3131 | { | |
3132 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
3133 | int ret = 0; | |
3134 | ||
3135 | flow_log("%s() authkeylen:%u authsize:%u\n", | |
3136 | __func__, ctx->authkeylen, authsize); | |
3137 | ||
3138 | ctx->digestsize = authsize; | |
3139 | ||
3140 | /* setkey the fallback just in case we needto use it */ | |
3141 | if (ctx->fallback_cipher) { | |
3142 | flow_log(" running fallback setauth()\n"); | |
3143 | ||
3144 | ret = crypto_aead_setauthsize(ctx->fallback_cipher, authsize); | |
3145 | if (ret) | |
3146 | flow_log(" fallback setauth() returned:%d\n", ret); | |
3147 | } | |
3148 | ||
3149 | return ret; | |
3150 | } | |
3151 | ||
3152 | static int aead_encrypt(struct aead_request *req) | |
3153 | { | |
3154 | flow_log("%s() cryptlen:%u %08x\n", __func__, req->cryptlen, | |
3155 | req->cryptlen); | |
3156 | dump_sg(req->src, 0, req->cryptlen + req->assoclen); | |
3157 | flow_log(" assoc_len:%u\n", req->assoclen); | |
3158 | ||
3159 | return aead_enqueue(req, true); | |
3160 | } | |
3161 | ||
3162 | static int aead_decrypt(struct aead_request *req) | |
3163 | { | |
3164 | flow_log("%s() cryptlen:%u\n", __func__, req->cryptlen); | |
3165 | dump_sg(req->src, 0, req->cryptlen + req->assoclen); | |
3166 | flow_log(" assoc_len:%u\n", req->assoclen); | |
3167 | ||
3168 | return aead_enqueue(req, false); | |
3169 | } | |
3170 | ||
3171 | /* ==================== Supported Cipher Algorithms ==================== */ | |
3172 | ||
3173 | static struct iproc_alg_s driver_algs[] = { | |
3174 | { | |
3175 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3176 | .alg.aead = { | |
3177 | .base = { | |
3178 | .cra_name = "gcm(aes)", | |
3179 | .cra_driver_name = "gcm-aes-iproc", | |
3180 | .cra_blocksize = AES_BLOCK_SIZE, | |
3181 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3182 | }, | |
3183 | .setkey = aead_gcm_ccm_setkey, | |
3184 | .ivsize = GCM_AES_IV_SIZE, | |
3185 | .maxauthsize = AES_BLOCK_SIZE, | |
3186 | }, | |
3187 | .cipher_info = { | |
3188 | .alg = CIPHER_ALG_AES, | |
3189 | .mode = CIPHER_MODE_GCM, | |
3190 | }, | |
3191 | .auth_info = { | |
3192 | .alg = HASH_ALG_AES, | |
3193 | .mode = HASH_MODE_GCM, | |
3194 | }, | |
3195 | .auth_first = 0, | |
3196 | }, | |
3197 | { | |
3198 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3199 | .alg.aead = { | |
3200 | .base = { | |
3201 | .cra_name = "ccm(aes)", | |
3202 | .cra_driver_name = "ccm-aes-iproc", | |
3203 | .cra_blocksize = AES_BLOCK_SIZE, | |
3204 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3205 | }, | |
3206 | .setkey = aead_gcm_ccm_setkey, | |
3207 | .ivsize = CCM_AES_IV_SIZE, | |
3208 | .maxauthsize = AES_BLOCK_SIZE, | |
3209 | }, | |
3210 | .cipher_info = { | |
3211 | .alg = CIPHER_ALG_AES, | |
3212 | .mode = CIPHER_MODE_CCM, | |
3213 | }, | |
3214 | .auth_info = { | |
3215 | .alg = HASH_ALG_AES, | |
3216 | .mode = HASH_MODE_CCM, | |
3217 | }, | |
3218 | .auth_first = 0, | |
3219 | }, | |
3220 | { | |
3221 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3222 | .alg.aead = { | |
3223 | .base = { | |
3224 | .cra_name = "rfc4106(gcm(aes))", | |
3225 | .cra_driver_name = "gcm-aes-esp-iproc", | |
3226 | .cra_blocksize = AES_BLOCK_SIZE, | |
3227 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3228 | }, | |
3229 | .setkey = aead_gcm_esp_setkey, | |
a59851d2 | 3230 | .ivsize = GCM_RFC4106_IV_SIZE, |
9d12ba86 RR |
3231 | .maxauthsize = AES_BLOCK_SIZE, |
3232 | }, | |
3233 | .cipher_info = { | |
3234 | .alg = CIPHER_ALG_AES, | |
3235 | .mode = CIPHER_MODE_GCM, | |
3236 | }, | |
3237 | .auth_info = { | |
3238 | .alg = HASH_ALG_AES, | |
3239 | .mode = HASH_MODE_GCM, | |
3240 | }, | |
3241 | .auth_first = 0, | |
3242 | }, | |
3243 | { | |
3244 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3245 | .alg.aead = { | |
3246 | .base = { | |
3247 | .cra_name = "rfc4309(ccm(aes))", | |
3248 | .cra_driver_name = "ccm-aes-esp-iproc", | |
3249 | .cra_blocksize = AES_BLOCK_SIZE, | |
3250 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3251 | }, | |
3252 | .setkey = aead_ccm_esp_setkey, | |
3253 | .ivsize = CCM_AES_IV_SIZE, | |
3254 | .maxauthsize = AES_BLOCK_SIZE, | |
3255 | }, | |
3256 | .cipher_info = { | |
3257 | .alg = CIPHER_ALG_AES, | |
3258 | .mode = CIPHER_MODE_CCM, | |
3259 | }, | |
3260 | .auth_info = { | |
3261 | .alg = HASH_ALG_AES, | |
3262 | .mode = HASH_MODE_CCM, | |
3263 | }, | |
3264 | .auth_first = 0, | |
3265 | }, | |
3266 | { | |
3267 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3268 | .alg.aead = { | |
3269 | .base = { | |
3270 | .cra_name = "rfc4543(gcm(aes))", | |
3271 | .cra_driver_name = "gmac-aes-esp-iproc", | |
3272 | .cra_blocksize = AES_BLOCK_SIZE, | |
3273 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3274 | }, | |
3275 | .setkey = rfc4543_gcm_esp_setkey, | |
a59851d2 | 3276 | .ivsize = GCM_RFC4106_IV_SIZE, |
9d12ba86 RR |
3277 | .maxauthsize = AES_BLOCK_SIZE, |
3278 | }, | |
3279 | .cipher_info = { | |
3280 | .alg = CIPHER_ALG_AES, | |
3281 | .mode = CIPHER_MODE_GCM, | |
3282 | }, | |
3283 | .auth_info = { | |
3284 | .alg = HASH_ALG_AES, | |
3285 | .mode = HASH_MODE_GCM, | |
3286 | }, | |
3287 | .auth_first = 0, | |
3288 | }, | |
3289 | { | |
3290 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3291 | .alg.aead = { | |
3292 | .base = { | |
3293 | .cra_name = "authenc(hmac(md5),cbc(aes))", | |
3294 | .cra_driver_name = "authenc-hmac-md5-cbc-aes-iproc", | |
3295 | .cra_blocksize = AES_BLOCK_SIZE, | |
3296 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3297 | }, | |
3298 | .setkey = aead_authenc_setkey, | |
3299 | .ivsize = AES_BLOCK_SIZE, | |
3300 | .maxauthsize = MD5_DIGEST_SIZE, | |
3301 | }, | |
3302 | .cipher_info = { | |
3303 | .alg = CIPHER_ALG_AES, | |
3304 | .mode = CIPHER_MODE_CBC, | |
3305 | }, | |
3306 | .auth_info = { | |
3307 | .alg = HASH_ALG_MD5, | |
3308 | .mode = HASH_MODE_HMAC, | |
3309 | }, | |
3310 | .auth_first = 0, | |
3311 | }, | |
3312 | { | |
3313 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3314 | .alg.aead = { | |
3315 | .base = { | |
3316 | .cra_name = "authenc(hmac(sha1),cbc(aes))", | |
3317 | .cra_driver_name = "authenc-hmac-sha1-cbc-aes-iproc", | |
3318 | .cra_blocksize = AES_BLOCK_SIZE, | |
3319 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3320 | }, | |
3321 | .setkey = aead_authenc_setkey, | |
3322 | .ivsize = AES_BLOCK_SIZE, | |
3323 | .maxauthsize = SHA1_DIGEST_SIZE, | |
3324 | }, | |
3325 | .cipher_info = { | |
3326 | .alg = CIPHER_ALG_AES, | |
3327 | .mode = CIPHER_MODE_CBC, | |
3328 | }, | |
3329 | .auth_info = { | |
3330 | .alg = HASH_ALG_SHA1, | |
3331 | .mode = HASH_MODE_HMAC, | |
3332 | }, | |
3333 | .auth_first = 0, | |
3334 | }, | |
3335 | { | |
3336 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3337 | .alg.aead = { | |
3338 | .base = { | |
3339 | .cra_name = "authenc(hmac(sha256),cbc(aes))", | |
3340 | .cra_driver_name = "authenc-hmac-sha256-cbc-aes-iproc", | |
3341 | .cra_blocksize = AES_BLOCK_SIZE, | |
3342 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3343 | }, | |
3344 | .setkey = aead_authenc_setkey, | |
3345 | .ivsize = AES_BLOCK_SIZE, | |
3346 | .maxauthsize = SHA256_DIGEST_SIZE, | |
3347 | }, | |
3348 | .cipher_info = { | |
3349 | .alg = CIPHER_ALG_AES, | |
3350 | .mode = CIPHER_MODE_CBC, | |
3351 | }, | |
3352 | .auth_info = { | |
3353 | .alg = HASH_ALG_SHA256, | |
3354 | .mode = HASH_MODE_HMAC, | |
3355 | }, | |
3356 | .auth_first = 0, | |
3357 | }, | |
3358 | { | |
3359 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3360 | .alg.aead = { | |
3361 | .base = { | |
3362 | .cra_name = "authenc(hmac(md5),cbc(des))", | |
3363 | .cra_driver_name = "authenc-hmac-md5-cbc-des-iproc", | |
3364 | .cra_blocksize = DES_BLOCK_SIZE, | |
3365 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3366 | }, | |
3367 | .setkey = aead_authenc_setkey, | |
3368 | .ivsize = DES_BLOCK_SIZE, | |
3369 | .maxauthsize = MD5_DIGEST_SIZE, | |
3370 | }, | |
3371 | .cipher_info = { | |
3372 | .alg = CIPHER_ALG_DES, | |
3373 | .mode = CIPHER_MODE_CBC, | |
3374 | }, | |
3375 | .auth_info = { | |
3376 | .alg = HASH_ALG_MD5, | |
3377 | .mode = HASH_MODE_HMAC, | |
3378 | }, | |
3379 | .auth_first = 0, | |
3380 | }, | |
3381 | { | |
3382 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3383 | .alg.aead = { | |
3384 | .base = { | |
3385 | .cra_name = "authenc(hmac(sha1),cbc(des))", | |
3386 | .cra_driver_name = "authenc-hmac-sha1-cbc-des-iproc", | |
3387 | .cra_blocksize = DES_BLOCK_SIZE, | |
3388 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3389 | }, | |
3390 | .setkey = aead_authenc_setkey, | |
3391 | .ivsize = DES_BLOCK_SIZE, | |
3392 | .maxauthsize = SHA1_DIGEST_SIZE, | |
3393 | }, | |
3394 | .cipher_info = { | |
3395 | .alg = CIPHER_ALG_DES, | |
3396 | .mode = CIPHER_MODE_CBC, | |
3397 | }, | |
3398 | .auth_info = { | |
3399 | .alg = HASH_ALG_SHA1, | |
3400 | .mode = HASH_MODE_HMAC, | |
3401 | }, | |
3402 | .auth_first = 0, | |
3403 | }, | |
3404 | { | |
3405 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3406 | .alg.aead = { | |
3407 | .base = { | |
3408 | .cra_name = "authenc(hmac(sha224),cbc(des))", | |
3409 | .cra_driver_name = "authenc-hmac-sha224-cbc-des-iproc", | |
3410 | .cra_blocksize = DES_BLOCK_SIZE, | |
3411 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3412 | }, | |
3413 | .setkey = aead_authenc_setkey, | |
3414 | .ivsize = DES_BLOCK_SIZE, | |
3415 | .maxauthsize = SHA224_DIGEST_SIZE, | |
3416 | }, | |
3417 | .cipher_info = { | |
3418 | .alg = CIPHER_ALG_DES, | |
3419 | .mode = CIPHER_MODE_CBC, | |
3420 | }, | |
3421 | .auth_info = { | |
3422 | .alg = HASH_ALG_SHA224, | |
3423 | .mode = HASH_MODE_HMAC, | |
3424 | }, | |
3425 | .auth_first = 0, | |
3426 | }, | |
3427 | { | |
3428 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3429 | .alg.aead = { | |
3430 | .base = { | |
3431 | .cra_name = "authenc(hmac(sha256),cbc(des))", | |
3432 | .cra_driver_name = "authenc-hmac-sha256-cbc-des-iproc", | |
3433 | .cra_blocksize = DES_BLOCK_SIZE, | |
3434 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3435 | }, | |
3436 | .setkey = aead_authenc_setkey, | |
3437 | .ivsize = DES_BLOCK_SIZE, | |
3438 | .maxauthsize = SHA256_DIGEST_SIZE, | |
3439 | }, | |
3440 | .cipher_info = { | |
3441 | .alg = CIPHER_ALG_DES, | |
3442 | .mode = CIPHER_MODE_CBC, | |
3443 | }, | |
3444 | .auth_info = { | |
3445 | .alg = HASH_ALG_SHA256, | |
3446 | .mode = HASH_MODE_HMAC, | |
3447 | }, | |
3448 | .auth_first = 0, | |
3449 | }, | |
3450 | { | |
3451 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3452 | .alg.aead = { | |
3453 | .base = { | |
3454 | .cra_name = "authenc(hmac(sha384),cbc(des))", | |
3455 | .cra_driver_name = "authenc-hmac-sha384-cbc-des-iproc", | |
3456 | .cra_blocksize = DES_BLOCK_SIZE, | |
3457 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3458 | }, | |
3459 | .setkey = aead_authenc_setkey, | |
3460 | .ivsize = DES_BLOCK_SIZE, | |
3461 | .maxauthsize = SHA384_DIGEST_SIZE, | |
3462 | }, | |
3463 | .cipher_info = { | |
3464 | .alg = CIPHER_ALG_DES, | |
3465 | .mode = CIPHER_MODE_CBC, | |
3466 | }, | |
3467 | .auth_info = { | |
3468 | .alg = HASH_ALG_SHA384, | |
3469 | .mode = HASH_MODE_HMAC, | |
3470 | }, | |
3471 | .auth_first = 0, | |
3472 | }, | |
3473 | { | |
3474 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3475 | .alg.aead = { | |
3476 | .base = { | |
3477 | .cra_name = "authenc(hmac(sha512),cbc(des))", | |
3478 | .cra_driver_name = "authenc-hmac-sha512-cbc-des-iproc", | |
3479 | .cra_blocksize = DES_BLOCK_SIZE, | |
3480 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3481 | }, | |
3482 | .setkey = aead_authenc_setkey, | |
3483 | .ivsize = DES_BLOCK_SIZE, | |
3484 | .maxauthsize = SHA512_DIGEST_SIZE, | |
3485 | }, | |
3486 | .cipher_info = { | |
3487 | .alg = CIPHER_ALG_DES, | |
3488 | .mode = CIPHER_MODE_CBC, | |
3489 | }, | |
3490 | .auth_info = { | |
3491 | .alg = HASH_ALG_SHA512, | |
3492 | .mode = HASH_MODE_HMAC, | |
3493 | }, | |
3494 | .auth_first = 0, | |
3495 | }, | |
3496 | { | |
3497 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3498 | .alg.aead = { | |
3499 | .base = { | |
3500 | .cra_name = "authenc(hmac(md5),cbc(des3_ede))", | |
3501 | .cra_driver_name = "authenc-hmac-md5-cbc-des3-iproc", | |
3502 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3503 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3504 | }, | |
3505 | .setkey = aead_authenc_setkey, | |
3506 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3507 | .maxauthsize = MD5_DIGEST_SIZE, | |
3508 | }, | |
3509 | .cipher_info = { | |
3510 | .alg = CIPHER_ALG_3DES, | |
3511 | .mode = CIPHER_MODE_CBC, | |
3512 | }, | |
3513 | .auth_info = { | |
3514 | .alg = HASH_ALG_MD5, | |
3515 | .mode = HASH_MODE_HMAC, | |
3516 | }, | |
3517 | .auth_first = 0, | |
3518 | }, | |
3519 | { | |
3520 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3521 | .alg.aead = { | |
3522 | .base = { | |
3523 | .cra_name = "authenc(hmac(sha1),cbc(des3_ede))", | |
3524 | .cra_driver_name = "authenc-hmac-sha1-cbc-des3-iproc", | |
3525 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3526 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3527 | }, | |
3528 | .setkey = aead_authenc_setkey, | |
3529 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3530 | .maxauthsize = SHA1_DIGEST_SIZE, | |
3531 | }, | |
3532 | .cipher_info = { | |
3533 | .alg = CIPHER_ALG_3DES, | |
3534 | .mode = CIPHER_MODE_CBC, | |
3535 | }, | |
3536 | .auth_info = { | |
3537 | .alg = HASH_ALG_SHA1, | |
3538 | .mode = HASH_MODE_HMAC, | |
3539 | }, | |
3540 | .auth_first = 0, | |
3541 | }, | |
3542 | { | |
3543 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3544 | .alg.aead = { | |
3545 | .base = { | |
3546 | .cra_name = "authenc(hmac(sha224),cbc(des3_ede))", | |
3547 | .cra_driver_name = "authenc-hmac-sha224-cbc-des3-iproc", | |
3548 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3549 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3550 | }, | |
3551 | .setkey = aead_authenc_setkey, | |
3552 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3553 | .maxauthsize = SHA224_DIGEST_SIZE, | |
3554 | }, | |
3555 | .cipher_info = { | |
3556 | .alg = CIPHER_ALG_3DES, | |
3557 | .mode = CIPHER_MODE_CBC, | |
3558 | }, | |
3559 | .auth_info = { | |
3560 | .alg = HASH_ALG_SHA224, | |
3561 | .mode = HASH_MODE_HMAC, | |
3562 | }, | |
3563 | .auth_first = 0, | |
3564 | }, | |
3565 | { | |
3566 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3567 | .alg.aead = { | |
3568 | .base = { | |
3569 | .cra_name = "authenc(hmac(sha256),cbc(des3_ede))", | |
3570 | .cra_driver_name = "authenc-hmac-sha256-cbc-des3-iproc", | |
3571 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3572 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3573 | }, | |
3574 | .setkey = aead_authenc_setkey, | |
3575 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3576 | .maxauthsize = SHA256_DIGEST_SIZE, | |
3577 | }, | |
3578 | .cipher_info = { | |
3579 | .alg = CIPHER_ALG_3DES, | |
3580 | .mode = CIPHER_MODE_CBC, | |
3581 | }, | |
3582 | .auth_info = { | |
3583 | .alg = HASH_ALG_SHA256, | |
3584 | .mode = HASH_MODE_HMAC, | |
3585 | }, | |
3586 | .auth_first = 0, | |
3587 | }, | |
3588 | { | |
3589 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3590 | .alg.aead = { | |
3591 | .base = { | |
3592 | .cra_name = "authenc(hmac(sha384),cbc(des3_ede))", | |
3593 | .cra_driver_name = "authenc-hmac-sha384-cbc-des3-iproc", | |
3594 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3595 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3596 | }, | |
3597 | .setkey = aead_authenc_setkey, | |
3598 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3599 | .maxauthsize = SHA384_DIGEST_SIZE, | |
3600 | }, | |
3601 | .cipher_info = { | |
3602 | .alg = CIPHER_ALG_3DES, | |
3603 | .mode = CIPHER_MODE_CBC, | |
3604 | }, | |
3605 | .auth_info = { | |
3606 | .alg = HASH_ALG_SHA384, | |
3607 | .mode = HASH_MODE_HMAC, | |
3608 | }, | |
3609 | .auth_first = 0, | |
3610 | }, | |
3611 | { | |
3612 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3613 | .alg.aead = { | |
3614 | .base = { | |
3615 | .cra_name = "authenc(hmac(sha512),cbc(des3_ede))", | |
3616 | .cra_driver_name = "authenc-hmac-sha512-cbc-des3-iproc", | |
3617 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3618 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3619 | }, | |
3620 | .setkey = aead_authenc_setkey, | |
3621 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3622 | .maxauthsize = SHA512_DIGEST_SIZE, | |
3623 | }, | |
3624 | .cipher_info = { | |
3625 | .alg = CIPHER_ALG_3DES, | |
3626 | .mode = CIPHER_MODE_CBC, | |
3627 | }, | |
3628 | .auth_info = { | |
3629 | .alg = HASH_ALG_SHA512, | |
3630 | .mode = HASH_MODE_HMAC, | |
3631 | }, | |
3632 | .auth_first = 0, | |
3633 | }, | |
3634 | ||
3635 | /* ABLKCIPHER algorithms. */ | |
3636 | { | |
3637 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3638 | .alg.crypto = { | |
3639 | .cra_name = "ecb(arc4)", | |
3640 | .cra_driver_name = "ecb-arc4-iproc", | |
3641 | .cra_blocksize = ARC4_BLOCK_SIZE, | |
3642 | .cra_ablkcipher = { | |
3643 | .min_keysize = ARC4_MIN_KEY_SIZE, | |
3644 | .max_keysize = ARC4_MAX_KEY_SIZE, | |
3645 | .ivsize = 0, | |
3646 | } | |
3647 | }, | |
3648 | .cipher_info = { | |
3649 | .alg = CIPHER_ALG_RC4, | |
3650 | .mode = CIPHER_MODE_NONE, | |
3651 | }, | |
3652 | .auth_info = { | |
3653 | .alg = HASH_ALG_NONE, | |
3654 | .mode = HASH_MODE_NONE, | |
3655 | }, | |
3656 | }, | |
3657 | { | |
3658 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3659 | .alg.crypto = { | |
3660 | .cra_name = "ofb(des)", | |
3661 | .cra_driver_name = "ofb-des-iproc", | |
3662 | .cra_blocksize = DES_BLOCK_SIZE, | |
3663 | .cra_ablkcipher = { | |
3664 | .min_keysize = DES_KEY_SIZE, | |
3665 | .max_keysize = DES_KEY_SIZE, | |
3666 | .ivsize = DES_BLOCK_SIZE, | |
3667 | } | |
3668 | }, | |
3669 | .cipher_info = { | |
3670 | .alg = CIPHER_ALG_DES, | |
3671 | .mode = CIPHER_MODE_OFB, | |
3672 | }, | |
3673 | .auth_info = { | |
3674 | .alg = HASH_ALG_NONE, | |
3675 | .mode = HASH_MODE_NONE, | |
3676 | }, | |
3677 | }, | |
3678 | { | |
3679 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3680 | .alg.crypto = { | |
3681 | .cra_name = "cbc(des)", | |
3682 | .cra_driver_name = "cbc-des-iproc", | |
3683 | .cra_blocksize = DES_BLOCK_SIZE, | |
3684 | .cra_ablkcipher = { | |
3685 | .min_keysize = DES_KEY_SIZE, | |
3686 | .max_keysize = DES_KEY_SIZE, | |
3687 | .ivsize = DES_BLOCK_SIZE, | |
3688 | } | |
3689 | }, | |
3690 | .cipher_info = { | |
3691 | .alg = CIPHER_ALG_DES, | |
3692 | .mode = CIPHER_MODE_CBC, | |
3693 | }, | |
3694 | .auth_info = { | |
3695 | .alg = HASH_ALG_NONE, | |
3696 | .mode = HASH_MODE_NONE, | |
3697 | }, | |
3698 | }, | |
3699 | { | |
3700 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3701 | .alg.crypto = { | |
3702 | .cra_name = "ecb(des)", | |
3703 | .cra_driver_name = "ecb-des-iproc", | |
3704 | .cra_blocksize = DES_BLOCK_SIZE, | |
3705 | .cra_ablkcipher = { | |
3706 | .min_keysize = DES_KEY_SIZE, | |
3707 | .max_keysize = DES_KEY_SIZE, | |
3708 | .ivsize = 0, | |
3709 | } | |
3710 | }, | |
3711 | .cipher_info = { | |
3712 | .alg = CIPHER_ALG_DES, | |
3713 | .mode = CIPHER_MODE_ECB, | |
3714 | }, | |
3715 | .auth_info = { | |
3716 | .alg = HASH_ALG_NONE, | |
3717 | .mode = HASH_MODE_NONE, | |
3718 | }, | |
3719 | }, | |
3720 | { | |
3721 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3722 | .alg.crypto = { | |
3723 | .cra_name = "ofb(des3_ede)", | |
3724 | .cra_driver_name = "ofb-des3-iproc", | |
3725 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3726 | .cra_ablkcipher = { | |
3727 | .min_keysize = DES3_EDE_KEY_SIZE, | |
3728 | .max_keysize = DES3_EDE_KEY_SIZE, | |
3729 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3730 | } | |
3731 | }, | |
3732 | .cipher_info = { | |
3733 | .alg = CIPHER_ALG_3DES, | |
3734 | .mode = CIPHER_MODE_OFB, | |
3735 | }, | |
3736 | .auth_info = { | |
3737 | .alg = HASH_ALG_NONE, | |
3738 | .mode = HASH_MODE_NONE, | |
3739 | }, | |
3740 | }, | |
3741 | { | |
3742 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3743 | .alg.crypto = { | |
3744 | .cra_name = "cbc(des3_ede)", | |
3745 | .cra_driver_name = "cbc-des3-iproc", | |
3746 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3747 | .cra_ablkcipher = { | |
3748 | .min_keysize = DES3_EDE_KEY_SIZE, | |
3749 | .max_keysize = DES3_EDE_KEY_SIZE, | |
3750 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3751 | } | |
3752 | }, | |
3753 | .cipher_info = { | |
3754 | .alg = CIPHER_ALG_3DES, | |
3755 | .mode = CIPHER_MODE_CBC, | |
3756 | }, | |
3757 | .auth_info = { | |
3758 | .alg = HASH_ALG_NONE, | |
3759 | .mode = HASH_MODE_NONE, | |
3760 | }, | |
3761 | }, | |
3762 | { | |
3763 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3764 | .alg.crypto = { | |
3765 | .cra_name = "ecb(des3_ede)", | |
3766 | .cra_driver_name = "ecb-des3-iproc", | |
3767 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3768 | .cra_ablkcipher = { | |
3769 | .min_keysize = DES3_EDE_KEY_SIZE, | |
3770 | .max_keysize = DES3_EDE_KEY_SIZE, | |
3771 | .ivsize = 0, | |
3772 | } | |
3773 | }, | |
3774 | .cipher_info = { | |
3775 | .alg = CIPHER_ALG_3DES, | |
3776 | .mode = CIPHER_MODE_ECB, | |
3777 | }, | |
3778 | .auth_info = { | |
3779 | .alg = HASH_ALG_NONE, | |
3780 | .mode = HASH_MODE_NONE, | |
3781 | }, | |
3782 | }, | |
3783 | { | |
3784 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3785 | .alg.crypto = { | |
3786 | .cra_name = "ofb(aes)", | |
3787 | .cra_driver_name = "ofb-aes-iproc", | |
3788 | .cra_blocksize = AES_BLOCK_SIZE, | |
3789 | .cra_ablkcipher = { | |
3790 | .min_keysize = AES_MIN_KEY_SIZE, | |
3791 | .max_keysize = AES_MAX_KEY_SIZE, | |
3792 | .ivsize = AES_BLOCK_SIZE, | |
3793 | } | |
3794 | }, | |
3795 | .cipher_info = { | |
3796 | .alg = CIPHER_ALG_AES, | |
3797 | .mode = CIPHER_MODE_OFB, | |
3798 | }, | |
3799 | .auth_info = { | |
3800 | .alg = HASH_ALG_NONE, | |
3801 | .mode = HASH_MODE_NONE, | |
3802 | }, | |
3803 | }, | |
3804 | { | |
3805 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3806 | .alg.crypto = { | |
3807 | .cra_name = "cbc(aes)", | |
3808 | .cra_driver_name = "cbc-aes-iproc", | |
3809 | .cra_blocksize = AES_BLOCK_SIZE, | |
3810 | .cra_ablkcipher = { | |
3811 | .min_keysize = AES_MIN_KEY_SIZE, | |
3812 | .max_keysize = AES_MAX_KEY_SIZE, | |
3813 | .ivsize = AES_BLOCK_SIZE, | |
3814 | } | |
3815 | }, | |
3816 | .cipher_info = { | |
3817 | .alg = CIPHER_ALG_AES, | |
3818 | .mode = CIPHER_MODE_CBC, | |
3819 | }, | |
3820 | .auth_info = { | |
3821 | .alg = HASH_ALG_NONE, | |
3822 | .mode = HASH_MODE_NONE, | |
3823 | }, | |
3824 | }, | |
3825 | { | |
3826 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3827 | .alg.crypto = { | |
3828 | .cra_name = "ecb(aes)", | |
3829 | .cra_driver_name = "ecb-aes-iproc", | |
3830 | .cra_blocksize = AES_BLOCK_SIZE, | |
3831 | .cra_ablkcipher = { | |
3832 | .min_keysize = AES_MIN_KEY_SIZE, | |
3833 | .max_keysize = AES_MAX_KEY_SIZE, | |
3834 | .ivsize = 0, | |
3835 | } | |
3836 | }, | |
3837 | .cipher_info = { | |
3838 | .alg = CIPHER_ALG_AES, | |
3839 | .mode = CIPHER_MODE_ECB, | |
3840 | }, | |
3841 | .auth_info = { | |
3842 | .alg = HASH_ALG_NONE, | |
3843 | .mode = HASH_MODE_NONE, | |
3844 | }, | |
3845 | }, | |
3846 | { | |
3847 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3848 | .alg.crypto = { | |
3849 | .cra_name = "ctr(aes)", | |
3850 | .cra_driver_name = "ctr-aes-iproc", | |
3851 | .cra_blocksize = AES_BLOCK_SIZE, | |
3852 | .cra_ablkcipher = { | |
9d12ba86 RR |
3853 | .min_keysize = AES_MIN_KEY_SIZE, |
3854 | .max_keysize = AES_MAX_KEY_SIZE, | |
3855 | .ivsize = AES_BLOCK_SIZE, | |
3856 | } | |
3857 | }, | |
3858 | .cipher_info = { | |
3859 | .alg = CIPHER_ALG_AES, | |
3860 | .mode = CIPHER_MODE_CTR, | |
3861 | }, | |
3862 | .auth_info = { | |
3863 | .alg = HASH_ALG_NONE, | |
3864 | .mode = HASH_MODE_NONE, | |
3865 | }, | |
3866 | }, | |
3867 | { | |
3868 | .type = CRYPTO_ALG_TYPE_ABLKCIPHER, | |
3869 | .alg.crypto = { | |
3870 | .cra_name = "xts(aes)", | |
3871 | .cra_driver_name = "xts-aes-iproc", | |
3872 | .cra_blocksize = AES_BLOCK_SIZE, | |
3873 | .cra_ablkcipher = { | |
3874 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
3875 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
3876 | .ivsize = AES_BLOCK_SIZE, | |
3877 | } | |
3878 | }, | |
3879 | .cipher_info = { | |
3880 | .alg = CIPHER_ALG_AES, | |
3881 | .mode = CIPHER_MODE_XTS, | |
3882 | }, | |
3883 | .auth_info = { | |
3884 | .alg = HASH_ALG_NONE, | |
3885 | .mode = HASH_MODE_NONE, | |
3886 | }, | |
3887 | }, | |
3888 | ||
3889 | /* AHASH algorithms. */ | |
3890 | { | |
3891 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3892 | .alg.hash = { | |
3893 | .halg.digestsize = MD5_DIGEST_SIZE, | |
3894 | .halg.base = { | |
3895 | .cra_name = "md5", | |
3896 | .cra_driver_name = "md5-iproc", | |
3897 | .cra_blocksize = MD5_BLOCK_WORDS * 4, | |
6a38f622 | 3898 | .cra_flags = CRYPTO_ALG_ASYNC, |
9d12ba86 RR |
3899 | } |
3900 | }, | |
3901 | .cipher_info = { | |
3902 | .alg = CIPHER_ALG_NONE, | |
3903 | .mode = CIPHER_MODE_NONE, | |
3904 | }, | |
3905 | .auth_info = { | |
3906 | .alg = HASH_ALG_MD5, | |
3907 | .mode = HASH_MODE_HASH, | |
3908 | }, | |
3909 | }, | |
3910 | { | |
3911 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3912 | .alg.hash = { | |
3913 | .halg.digestsize = MD5_DIGEST_SIZE, | |
3914 | .halg.base = { | |
3915 | .cra_name = "hmac(md5)", | |
3916 | .cra_driver_name = "hmac-md5-iproc", | |
3917 | .cra_blocksize = MD5_BLOCK_WORDS * 4, | |
3918 | } | |
3919 | }, | |
3920 | .cipher_info = { | |
3921 | .alg = CIPHER_ALG_NONE, | |
3922 | .mode = CIPHER_MODE_NONE, | |
3923 | }, | |
3924 | .auth_info = { | |
3925 | .alg = HASH_ALG_MD5, | |
3926 | .mode = HASH_MODE_HMAC, | |
3927 | }, | |
3928 | }, | |
3929 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3930 | .alg.hash = { | |
3931 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
3932 | .halg.base = { | |
3933 | .cra_name = "sha1", | |
3934 | .cra_driver_name = "sha1-iproc", | |
3935 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
3936 | } | |
3937 | }, | |
3938 | .cipher_info = { | |
3939 | .alg = CIPHER_ALG_NONE, | |
3940 | .mode = CIPHER_MODE_NONE, | |
3941 | }, | |
3942 | .auth_info = { | |
3943 | .alg = HASH_ALG_SHA1, | |
3944 | .mode = HASH_MODE_HASH, | |
3945 | }, | |
3946 | }, | |
3947 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3948 | .alg.hash = { | |
3949 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
3950 | .halg.base = { | |
3951 | .cra_name = "hmac(sha1)", | |
3952 | .cra_driver_name = "hmac-sha1-iproc", | |
3953 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
3954 | } | |
3955 | }, | |
3956 | .cipher_info = { | |
3957 | .alg = CIPHER_ALG_NONE, | |
3958 | .mode = CIPHER_MODE_NONE, | |
3959 | }, | |
3960 | .auth_info = { | |
3961 | .alg = HASH_ALG_SHA1, | |
3962 | .mode = HASH_MODE_HMAC, | |
3963 | }, | |
3964 | }, | |
3965 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3966 | .alg.hash = { | |
3967 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
3968 | .halg.base = { | |
3969 | .cra_name = "sha224", | |
3970 | .cra_driver_name = "sha224-iproc", | |
3971 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
3972 | } | |
3973 | }, | |
3974 | .cipher_info = { | |
3975 | .alg = CIPHER_ALG_NONE, | |
3976 | .mode = CIPHER_MODE_NONE, | |
3977 | }, | |
3978 | .auth_info = { | |
3979 | .alg = HASH_ALG_SHA224, | |
3980 | .mode = HASH_MODE_HASH, | |
3981 | }, | |
3982 | }, | |
3983 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3984 | .alg.hash = { | |
3985 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
3986 | .halg.base = { | |
3987 | .cra_name = "hmac(sha224)", | |
3988 | .cra_driver_name = "hmac-sha224-iproc", | |
3989 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
3990 | } | |
3991 | }, | |
3992 | .cipher_info = { | |
3993 | .alg = CIPHER_ALG_NONE, | |
3994 | .mode = CIPHER_MODE_NONE, | |
3995 | }, | |
3996 | .auth_info = { | |
3997 | .alg = HASH_ALG_SHA224, | |
3998 | .mode = HASH_MODE_HMAC, | |
3999 | }, | |
4000 | }, | |
4001 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
4002 | .alg.hash = { | |
4003 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
4004 | .halg.base = { | |
4005 | .cra_name = "sha256", | |
4006 | .cra_driver_name = "sha256-iproc", | |
4007 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
4008 | } | |
4009 | }, | |
4010 | .cipher_info = { | |
4011 | .alg = CIPHER_ALG_NONE, | |
4012 | .mode = CIPHER_MODE_NONE, | |
4013 | }, | |
4014 | .auth_info = { | |
4015 | .alg = HASH_ALG_SHA256, | |
4016 | .mode = HASH_MODE_HASH, | |
4017 | }, | |
4018 | }, | |
4019 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
4020 | .alg.hash = { | |
4021 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
4022 | .halg.base = { | |
4023 | .cra_name = "hmac(sha256)", | |
4024 | .cra_driver_name = "hmac-sha256-iproc", | |
4025 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
4026 | } | |
4027 | }, | |
4028 | .cipher_info = { | |
4029 | .alg = CIPHER_ALG_NONE, | |
4030 | .mode = CIPHER_MODE_NONE, | |
4031 | }, | |
4032 | .auth_info = { | |
4033 | .alg = HASH_ALG_SHA256, | |
4034 | .mode = HASH_MODE_HMAC, | |
4035 | }, | |
4036 | }, | |
4037 | { | |
4038 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4039 | .alg.hash = { | |
4040 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
4041 | .halg.base = { | |
4042 | .cra_name = "sha384", | |
4043 | .cra_driver_name = "sha384-iproc", | |
4044 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
4045 | } | |
4046 | }, | |
4047 | .cipher_info = { | |
4048 | .alg = CIPHER_ALG_NONE, | |
4049 | .mode = CIPHER_MODE_NONE, | |
4050 | }, | |
4051 | .auth_info = { | |
4052 | .alg = HASH_ALG_SHA384, | |
4053 | .mode = HASH_MODE_HASH, | |
4054 | }, | |
4055 | }, | |
4056 | { | |
4057 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4058 | .alg.hash = { | |
4059 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
4060 | .halg.base = { | |
4061 | .cra_name = "hmac(sha384)", | |
4062 | .cra_driver_name = "hmac-sha384-iproc", | |
4063 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
4064 | } | |
4065 | }, | |
4066 | .cipher_info = { | |
4067 | .alg = CIPHER_ALG_NONE, | |
4068 | .mode = CIPHER_MODE_NONE, | |
4069 | }, | |
4070 | .auth_info = { | |
4071 | .alg = HASH_ALG_SHA384, | |
4072 | .mode = HASH_MODE_HMAC, | |
4073 | }, | |
4074 | }, | |
4075 | { | |
4076 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4077 | .alg.hash = { | |
4078 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
4079 | .halg.base = { | |
4080 | .cra_name = "sha512", | |
4081 | .cra_driver_name = "sha512-iproc", | |
4082 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
4083 | } | |
4084 | }, | |
4085 | .cipher_info = { | |
4086 | .alg = CIPHER_ALG_NONE, | |
4087 | .mode = CIPHER_MODE_NONE, | |
4088 | }, | |
4089 | .auth_info = { | |
4090 | .alg = HASH_ALG_SHA512, | |
4091 | .mode = HASH_MODE_HASH, | |
4092 | }, | |
4093 | }, | |
4094 | { | |
4095 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4096 | .alg.hash = { | |
4097 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
4098 | .halg.base = { | |
4099 | .cra_name = "hmac(sha512)", | |
4100 | .cra_driver_name = "hmac-sha512-iproc", | |
4101 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
4102 | } | |
4103 | }, | |
4104 | .cipher_info = { | |
4105 | .alg = CIPHER_ALG_NONE, | |
4106 | .mode = CIPHER_MODE_NONE, | |
4107 | }, | |
4108 | .auth_info = { | |
4109 | .alg = HASH_ALG_SHA512, | |
4110 | .mode = HASH_MODE_HMAC, | |
4111 | }, | |
4112 | }, | |
4113 | { | |
4114 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4115 | .alg.hash = { | |
4116 | .halg.digestsize = SHA3_224_DIGEST_SIZE, | |
4117 | .halg.base = { | |
4118 | .cra_name = "sha3-224", | |
4119 | .cra_driver_name = "sha3-224-iproc", | |
4120 | .cra_blocksize = SHA3_224_BLOCK_SIZE, | |
4121 | } | |
4122 | }, | |
4123 | .cipher_info = { | |
4124 | .alg = CIPHER_ALG_NONE, | |
4125 | .mode = CIPHER_MODE_NONE, | |
4126 | }, | |
4127 | .auth_info = { | |
4128 | .alg = HASH_ALG_SHA3_224, | |
4129 | .mode = HASH_MODE_HASH, | |
4130 | }, | |
4131 | }, | |
4132 | { | |
4133 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4134 | .alg.hash = { | |
4135 | .halg.digestsize = SHA3_224_DIGEST_SIZE, | |
4136 | .halg.base = { | |
4137 | .cra_name = "hmac(sha3-224)", | |
4138 | .cra_driver_name = "hmac-sha3-224-iproc", | |
4139 | .cra_blocksize = SHA3_224_BLOCK_SIZE, | |
4140 | } | |
4141 | }, | |
4142 | .cipher_info = { | |
4143 | .alg = CIPHER_ALG_NONE, | |
4144 | .mode = CIPHER_MODE_NONE, | |
4145 | }, | |
4146 | .auth_info = { | |
4147 | .alg = HASH_ALG_SHA3_224, | |
4148 | .mode = HASH_MODE_HMAC | |
4149 | }, | |
4150 | }, | |
4151 | { | |
4152 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4153 | .alg.hash = { | |
4154 | .halg.digestsize = SHA3_256_DIGEST_SIZE, | |
4155 | .halg.base = { | |
4156 | .cra_name = "sha3-256", | |
4157 | .cra_driver_name = "sha3-256-iproc", | |
4158 | .cra_blocksize = SHA3_256_BLOCK_SIZE, | |
4159 | } | |
4160 | }, | |
4161 | .cipher_info = { | |
4162 | .alg = CIPHER_ALG_NONE, | |
4163 | .mode = CIPHER_MODE_NONE, | |
4164 | }, | |
4165 | .auth_info = { | |
4166 | .alg = HASH_ALG_SHA3_256, | |
4167 | .mode = HASH_MODE_HASH, | |
4168 | }, | |
4169 | }, | |
4170 | { | |
4171 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4172 | .alg.hash = { | |
4173 | .halg.digestsize = SHA3_256_DIGEST_SIZE, | |
4174 | .halg.base = { | |
4175 | .cra_name = "hmac(sha3-256)", | |
4176 | .cra_driver_name = "hmac-sha3-256-iproc", | |
4177 | .cra_blocksize = SHA3_256_BLOCK_SIZE, | |
4178 | } | |
4179 | }, | |
4180 | .cipher_info = { | |
4181 | .alg = CIPHER_ALG_NONE, | |
4182 | .mode = CIPHER_MODE_NONE, | |
4183 | }, | |
4184 | .auth_info = { | |
4185 | .alg = HASH_ALG_SHA3_256, | |
4186 | .mode = HASH_MODE_HMAC, | |
4187 | }, | |
4188 | }, | |
4189 | { | |
4190 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4191 | .alg.hash = { | |
4192 | .halg.digestsize = SHA3_384_DIGEST_SIZE, | |
4193 | .halg.base = { | |
4194 | .cra_name = "sha3-384", | |
4195 | .cra_driver_name = "sha3-384-iproc", | |
4196 | .cra_blocksize = SHA3_224_BLOCK_SIZE, | |
4197 | } | |
4198 | }, | |
4199 | .cipher_info = { | |
4200 | .alg = CIPHER_ALG_NONE, | |
4201 | .mode = CIPHER_MODE_NONE, | |
4202 | }, | |
4203 | .auth_info = { | |
4204 | .alg = HASH_ALG_SHA3_384, | |
4205 | .mode = HASH_MODE_HASH, | |
4206 | }, | |
4207 | }, | |
4208 | { | |
4209 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4210 | .alg.hash = { | |
4211 | .halg.digestsize = SHA3_384_DIGEST_SIZE, | |
4212 | .halg.base = { | |
4213 | .cra_name = "hmac(sha3-384)", | |
4214 | .cra_driver_name = "hmac-sha3-384-iproc", | |
4215 | .cra_blocksize = SHA3_384_BLOCK_SIZE, | |
4216 | } | |
4217 | }, | |
4218 | .cipher_info = { | |
4219 | .alg = CIPHER_ALG_NONE, | |
4220 | .mode = CIPHER_MODE_NONE, | |
4221 | }, | |
4222 | .auth_info = { | |
4223 | .alg = HASH_ALG_SHA3_384, | |
4224 | .mode = HASH_MODE_HMAC, | |
4225 | }, | |
4226 | }, | |
4227 | { | |
4228 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4229 | .alg.hash = { | |
4230 | .halg.digestsize = SHA3_512_DIGEST_SIZE, | |
4231 | .halg.base = { | |
4232 | .cra_name = "sha3-512", | |
4233 | .cra_driver_name = "sha3-512-iproc", | |
4234 | .cra_blocksize = SHA3_512_BLOCK_SIZE, | |
4235 | } | |
4236 | }, | |
4237 | .cipher_info = { | |
4238 | .alg = CIPHER_ALG_NONE, | |
4239 | .mode = CIPHER_MODE_NONE, | |
4240 | }, | |
4241 | .auth_info = { | |
4242 | .alg = HASH_ALG_SHA3_512, | |
4243 | .mode = HASH_MODE_HASH, | |
4244 | }, | |
4245 | }, | |
4246 | { | |
4247 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4248 | .alg.hash = { | |
4249 | .halg.digestsize = SHA3_512_DIGEST_SIZE, | |
4250 | .halg.base = { | |
4251 | .cra_name = "hmac(sha3-512)", | |
4252 | .cra_driver_name = "hmac-sha3-512-iproc", | |
4253 | .cra_blocksize = SHA3_512_BLOCK_SIZE, | |
4254 | } | |
4255 | }, | |
4256 | .cipher_info = { | |
4257 | .alg = CIPHER_ALG_NONE, | |
4258 | .mode = CIPHER_MODE_NONE, | |
4259 | }, | |
4260 | .auth_info = { | |
4261 | .alg = HASH_ALG_SHA3_512, | |
4262 | .mode = HASH_MODE_HMAC, | |
4263 | }, | |
4264 | }, | |
4265 | { | |
4266 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4267 | .alg.hash = { | |
4268 | .halg.digestsize = AES_BLOCK_SIZE, | |
4269 | .halg.base = { | |
4270 | .cra_name = "xcbc(aes)", | |
4271 | .cra_driver_name = "xcbc-aes-iproc", | |
4272 | .cra_blocksize = AES_BLOCK_SIZE, | |
4273 | } | |
4274 | }, | |
4275 | .cipher_info = { | |
4276 | .alg = CIPHER_ALG_NONE, | |
4277 | .mode = CIPHER_MODE_NONE, | |
4278 | }, | |
4279 | .auth_info = { | |
4280 | .alg = HASH_ALG_AES, | |
4281 | .mode = HASH_MODE_XCBC, | |
4282 | }, | |
4283 | }, | |
4284 | { | |
4285 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4286 | .alg.hash = { | |
4287 | .halg.digestsize = AES_BLOCK_SIZE, | |
4288 | .halg.base = { | |
4289 | .cra_name = "cmac(aes)", | |
4290 | .cra_driver_name = "cmac-aes-iproc", | |
4291 | .cra_blocksize = AES_BLOCK_SIZE, | |
4292 | } | |
4293 | }, | |
4294 | .cipher_info = { | |
4295 | .alg = CIPHER_ALG_NONE, | |
4296 | .mode = CIPHER_MODE_NONE, | |
4297 | }, | |
4298 | .auth_info = { | |
4299 | .alg = HASH_ALG_AES, | |
4300 | .mode = HASH_MODE_CMAC, | |
4301 | }, | |
4302 | }, | |
4303 | }; | |
4304 | ||
4305 | static int generic_cra_init(struct crypto_tfm *tfm, | |
4306 | struct iproc_alg_s *cipher_alg) | |
4307 | { | |
4308 | struct spu_hw *spu = &iproc_priv.spu; | |
4309 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
4310 | unsigned int blocksize = crypto_tfm_alg_blocksize(tfm); | |
4311 | ||
4312 | flow_log("%s()\n", __func__); | |
4313 | ||
4314 | ctx->alg = cipher_alg; | |
4315 | ctx->cipher = cipher_alg->cipher_info; | |
4316 | ctx->auth = cipher_alg->auth_info; | |
4317 | ctx->auth_first = cipher_alg->auth_first; | |
4318 | ctx->max_payload = spu->spu_ctx_max_payload(ctx->cipher.alg, | |
4319 | ctx->cipher.mode, | |
4320 | blocksize); | |
4321 | ctx->fallback_cipher = NULL; | |
4322 | ||
4323 | ctx->enckeylen = 0; | |
4324 | ctx->authkeylen = 0; | |
4325 | ||
4326 | atomic_inc(&iproc_priv.stream_count); | |
4327 | atomic_inc(&iproc_priv.session_count); | |
4328 | ||
4329 | return 0; | |
4330 | } | |
4331 | ||
4332 | static int ablkcipher_cra_init(struct crypto_tfm *tfm) | |
4333 | { | |
4334 | struct crypto_alg *alg = tfm->__crt_alg; | |
4335 | struct iproc_alg_s *cipher_alg; | |
4336 | ||
4337 | flow_log("%s()\n", __func__); | |
4338 | ||
4339 | tfm->crt_ablkcipher.reqsize = sizeof(struct iproc_reqctx_s); | |
4340 | ||
4341 | cipher_alg = container_of(alg, struct iproc_alg_s, alg.crypto); | |
4342 | return generic_cra_init(tfm, cipher_alg); | |
4343 | } | |
4344 | ||
4345 | static int ahash_cra_init(struct crypto_tfm *tfm) | |
4346 | { | |
4347 | int err; | |
4348 | struct crypto_alg *alg = tfm->__crt_alg; | |
4349 | struct iproc_alg_s *cipher_alg; | |
4350 | ||
4351 | cipher_alg = container_of(__crypto_ahash_alg(alg), struct iproc_alg_s, | |
4352 | alg.hash); | |
4353 | ||
4354 | err = generic_cra_init(tfm, cipher_alg); | |
4355 | flow_log("%s()\n", __func__); | |
4356 | ||
4357 | /* | |
4358 | * export state size has to be < 512 bytes. So don't include msg bufs | |
4359 | * in state size. | |
4360 | */ | |
4361 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), | |
4362 | sizeof(struct iproc_reqctx_s)); | |
4363 | ||
4364 | return err; | |
4365 | } | |
4366 | ||
4367 | static int aead_cra_init(struct crypto_aead *aead) | |
4368 | { | |
4369 | struct crypto_tfm *tfm = crypto_aead_tfm(aead); | |
4370 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
4371 | struct crypto_alg *alg = tfm->__crt_alg; | |
4372 | struct aead_alg *aalg = container_of(alg, struct aead_alg, base); | |
4373 | struct iproc_alg_s *cipher_alg = container_of(aalg, struct iproc_alg_s, | |
4374 | alg.aead); | |
4375 | ||
4376 | int err = generic_cra_init(tfm, cipher_alg); | |
4377 | ||
4378 | flow_log("%s()\n", __func__); | |
4379 | ||
4380 | crypto_aead_set_reqsize(aead, sizeof(struct iproc_reqctx_s)); | |
4381 | ctx->is_esp = false; | |
4382 | ctx->salt_len = 0; | |
4383 | ctx->salt_offset = 0; | |
4384 | ||
4385 | /* random first IV */ | |
4386 | get_random_bytes(ctx->iv, MAX_IV_SIZE); | |
4387 | flow_dump(" iv: ", ctx->iv, MAX_IV_SIZE); | |
4388 | ||
4389 | if (!err) { | |
4390 | if (alg->cra_flags & CRYPTO_ALG_NEED_FALLBACK) { | |
4391 | flow_log("%s() creating fallback cipher\n", __func__); | |
4392 | ||
4393 | ctx->fallback_cipher = | |
4394 | crypto_alloc_aead(alg->cra_name, 0, | |
4395 | CRYPTO_ALG_ASYNC | | |
4396 | CRYPTO_ALG_NEED_FALLBACK); | |
4397 | if (IS_ERR(ctx->fallback_cipher)) { | |
4398 | pr_err("%s() Error: failed to allocate fallback for %s\n", | |
4399 | __func__, alg->cra_name); | |
4400 | return PTR_ERR(ctx->fallback_cipher); | |
4401 | } | |
4402 | } | |
4403 | } | |
4404 | ||
4405 | return err; | |
4406 | } | |
4407 | ||
4408 | static void generic_cra_exit(struct crypto_tfm *tfm) | |
4409 | { | |
4410 | atomic_dec(&iproc_priv.session_count); | |
4411 | } | |
4412 | ||
4413 | static void aead_cra_exit(struct crypto_aead *aead) | |
4414 | { | |
4415 | struct crypto_tfm *tfm = crypto_aead_tfm(aead); | |
4416 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
4417 | ||
4418 | generic_cra_exit(tfm); | |
4419 | ||
4420 | if (ctx->fallback_cipher) { | |
4421 | crypto_free_aead(ctx->fallback_cipher); | |
4422 | ctx->fallback_cipher = NULL; | |
4423 | } | |
4424 | } | |
4425 | ||
4426 | /** | |
4427 | * spu_functions_register() - Specify hardware-specific SPU functions based on | |
4428 | * SPU type read from device tree. | |
4429 | * @dev: device structure | |
4430 | * @spu_type: SPU hardware generation | |
4431 | * @spu_subtype: SPU hardware version | |
4432 | */ | |
4433 | static void spu_functions_register(struct device *dev, | |
4434 | enum spu_spu_type spu_type, | |
4435 | enum spu_spu_subtype spu_subtype) | |
4436 | { | |
4437 | struct spu_hw *spu = &iproc_priv.spu; | |
4438 | ||
4439 | if (spu_type == SPU_TYPE_SPUM) { | |
4440 | dev_dbg(dev, "Registering SPUM functions"); | |
4441 | spu->spu_dump_msg_hdr = spum_dump_msg_hdr; | |
4442 | spu->spu_payload_length = spum_payload_length; | |
4443 | spu->spu_response_hdr_len = spum_response_hdr_len; | |
4444 | spu->spu_hash_pad_len = spum_hash_pad_len; | |
4445 | spu->spu_gcm_ccm_pad_len = spum_gcm_ccm_pad_len; | |
4446 | spu->spu_assoc_resp_len = spum_assoc_resp_len; | |
4447 | spu->spu_aead_ivlen = spum_aead_ivlen; | |
4448 | spu->spu_hash_type = spum_hash_type; | |
4449 | spu->spu_digest_size = spum_digest_size; | |
4450 | spu->spu_create_request = spum_create_request; | |
4451 | spu->spu_cipher_req_init = spum_cipher_req_init; | |
4452 | spu->spu_cipher_req_finish = spum_cipher_req_finish; | |
4453 | spu->spu_request_pad = spum_request_pad; | |
4454 | spu->spu_tx_status_len = spum_tx_status_len; | |
4455 | spu->spu_rx_status_len = spum_rx_status_len; | |
4456 | spu->spu_status_process = spum_status_process; | |
4457 | spu->spu_xts_tweak_in_payload = spum_xts_tweak_in_payload; | |
4458 | spu->spu_ccm_update_iv = spum_ccm_update_iv; | |
4459 | spu->spu_wordalign_padlen = spum_wordalign_padlen; | |
4460 | if (spu_subtype == SPU_SUBTYPE_SPUM_NS2) | |
4461 | spu->spu_ctx_max_payload = spum_ns2_ctx_max_payload; | |
4462 | else | |
4463 | spu->spu_ctx_max_payload = spum_nsp_ctx_max_payload; | |
4464 | } else { | |
4465 | dev_dbg(dev, "Registering SPU2 functions"); | |
4466 | spu->spu_dump_msg_hdr = spu2_dump_msg_hdr; | |
4467 | spu->spu_ctx_max_payload = spu2_ctx_max_payload; | |
4468 | spu->spu_payload_length = spu2_payload_length; | |
4469 | spu->spu_response_hdr_len = spu2_response_hdr_len; | |
4470 | spu->spu_hash_pad_len = spu2_hash_pad_len; | |
4471 | spu->spu_gcm_ccm_pad_len = spu2_gcm_ccm_pad_len; | |
4472 | spu->spu_assoc_resp_len = spu2_assoc_resp_len; | |
4473 | spu->spu_aead_ivlen = spu2_aead_ivlen; | |
4474 | spu->spu_hash_type = spu2_hash_type; | |
4475 | spu->spu_digest_size = spu2_digest_size; | |
4476 | spu->spu_create_request = spu2_create_request; | |
4477 | spu->spu_cipher_req_init = spu2_cipher_req_init; | |
4478 | spu->spu_cipher_req_finish = spu2_cipher_req_finish; | |
4479 | spu->spu_request_pad = spu2_request_pad; | |
4480 | spu->spu_tx_status_len = spu2_tx_status_len; | |
4481 | spu->spu_rx_status_len = spu2_rx_status_len; | |
4482 | spu->spu_status_process = spu2_status_process; | |
4483 | spu->spu_xts_tweak_in_payload = spu2_xts_tweak_in_payload; | |
4484 | spu->spu_ccm_update_iv = spu2_ccm_update_iv; | |
4485 | spu->spu_wordalign_padlen = spu2_wordalign_padlen; | |
4486 | } | |
4487 | } | |
4488 | ||
4489 | /** | |
4490 | * spu_mb_init() - Initialize mailbox client. Request ownership of a mailbox | |
4491 | * channel for the SPU being probed. | |
4492 | * @dev: SPU driver device structure | |
4493 | * | |
4494 | * Return: 0 if successful | |
4495 | * < 0 otherwise | |
4496 | */ | |
4497 | static int spu_mb_init(struct device *dev) | |
4498 | { | |
9166c443 | 4499 | struct mbox_client *mcl = &iproc_priv.mcl; |
4500 | int err, i; | |
4501 | ||
4502 | iproc_priv.mbox = devm_kcalloc(dev, iproc_priv.spu.num_chan, | |
4503 | sizeof(struct mbox_chan *), GFP_KERNEL); | |
4504 | if (!iproc_priv.mbox) | |
4505 | return -ENOMEM; | |
9d12ba86 RR |
4506 | |
4507 | mcl->dev = dev; | |
4508 | mcl->tx_block = false; | |
4509 | mcl->tx_tout = 0; | |
f0e2ce58 | 4510 | mcl->knows_txdone = true; |
9d12ba86 RR |
4511 | mcl->rx_callback = spu_rx_callback; |
4512 | mcl->tx_done = NULL; | |
4513 | ||
9166c443 | 4514 | for (i = 0; i < iproc_priv.spu.num_chan; i++) { |
4515 | iproc_priv.mbox[i] = mbox_request_channel(mcl, i); | |
4516 | if (IS_ERR(iproc_priv.mbox[i])) { | |
4517 | err = (int)PTR_ERR(iproc_priv.mbox[i]); | |
4518 | dev_err(dev, | |
4519 | "Mbox channel %d request failed with err %d", | |
4520 | i, err); | |
4521 | iproc_priv.mbox[i] = NULL; | |
4522 | goto free_channels; | |
4523 | } | |
9d12ba86 RR |
4524 | } |
4525 | ||
4526 | return 0; | |
9166c443 | 4527 | free_channels: |
4528 | for (i = 0; i < iproc_priv.spu.num_chan; i++) { | |
4529 | if (iproc_priv.mbox[i]) | |
4530 | mbox_free_channel(iproc_priv.mbox[i]); | |
4531 | } | |
4532 | ||
4533 | return err; | |
9d12ba86 RR |
4534 | } |
4535 | ||
4536 | static void spu_mb_release(struct platform_device *pdev) | |
4537 | { | |
4538 | int i; | |
4539 | ||
9166c443 | 4540 | for (i = 0; i < iproc_priv.spu.num_chan; i++) |
9d12ba86 RR |
4541 | mbox_free_channel(iproc_priv.mbox[i]); |
4542 | } | |
4543 | ||
4544 | static void spu_counters_init(void) | |
4545 | { | |
4546 | int i; | |
4547 | int j; | |
4548 | ||
4549 | atomic_set(&iproc_priv.session_count, 0); | |
4550 | atomic_set(&iproc_priv.stream_count, 0); | |
9166c443 | 4551 | atomic_set(&iproc_priv.next_chan, (int)iproc_priv.spu.num_chan); |
9d12ba86 RR |
4552 | atomic64_set(&iproc_priv.bytes_in, 0); |
4553 | atomic64_set(&iproc_priv.bytes_out, 0); | |
4554 | for (i = 0; i < SPU_OP_NUM; i++) { | |
4555 | atomic_set(&iproc_priv.op_counts[i], 0); | |
4556 | atomic_set(&iproc_priv.setkey_cnt[i], 0); | |
4557 | } | |
4558 | for (i = 0; i < CIPHER_ALG_LAST; i++) | |
4559 | for (j = 0; j < CIPHER_MODE_LAST; j++) | |
4560 | atomic_set(&iproc_priv.cipher_cnt[i][j], 0); | |
4561 | ||
4562 | for (i = 0; i < HASH_ALG_LAST; i++) { | |
4563 | atomic_set(&iproc_priv.hash_cnt[i], 0); | |
4564 | atomic_set(&iproc_priv.hmac_cnt[i], 0); | |
4565 | } | |
4566 | for (i = 0; i < AEAD_TYPE_LAST; i++) | |
4567 | atomic_set(&iproc_priv.aead_cnt[i], 0); | |
4568 | ||
4569 | atomic_set(&iproc_priv.mb_no_spc, 0); | |
4570 | atomic_set(&iproc_priv.mb_send_fail, 0); | |
4571 | atomic_set(&iproc_priv.bad_icv, 0); | |
4572 | } | |
4573 | ||
4574 | static int spu_register_ablkcipher(struct iproc_alg_s *driver_alg) | |
4575 | { | |
4576 | struct spu_hw *spu = &iproc_priv.spu; | |
4577 | struct crypto_alg *crypto = &driver_alg->alg.crypto; | |
4578 | int err; | |
4579 | ||
4580 | /* SPU2 does not support RC4 */ | |
4581 | if ((driver_alg->cipher_info.alg == CIPHER_ALG_RC4) && | |
4582 | (spu->spu_type == SPU_TYPE_SPU2)) | |
4583 | return 0; | |
4584 | ||
4585 | crypto->cra_module = THIS_MODULE; | |
4586 | crypto->cra_priority = cipher_pri; | |
4587 | crypto->cra_alignmask = 0; | |
4588 | crypto->cra_ctxsize = sizeof(struct iproc_ctx_s); | |
9d12ba86 RR |
4589 | |
4590 | crypto->cra_init = ablkcipher_cra_init; | |
4591 | crypto->cra_exit = generic_cra_exit; | |
4592 | crypto->cra_type = &crypto_ablkcipher_type; | |
4593 | crypto->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC | | |
4594 | CRYPTO_ALG_KERN_DRIVER_ONLY; | |
4595 | ||
4596 | crypto->cra_ablkcipher.setkey = ablkcipher_setkey; | |
4597 | crypto->cra_ablkcipher.encrypt = ablkcipher_encrypt; | |
4598 | crypto->cra_ablkcipher.decrypt = ablkcipher_decrypt; | |
4599 | ||
4600 | err = crypto_register_alg(crypto); | |
4601 | /* Mark alg as having been registered, if successful */ | |
4602 | if (err == 0) | |
4603 | driver_alg->registered = true; | |
4604 | pr_debug(" registered ablkcipher %s\n", crypto->cra_driver_name); | |
4605 | return err; | |
4606 | } | |
4607 | ||
4608 | static int spu_register_ahash(struct iproc_alg_s *driver_alg) | |
4609 | { | |
4610 | struct spu_hw *spu = &iproc_priv.spu; | |
4611 | struct ahash_alg *hash = &driver_alg->alg.hash; | |
4612 | int err; | |
4613 | ||
4614 | /* AES-XCBC is the only AES hash type currently supported on SPU-M */ | |
4615 | if ((driver_alg->auth_info.alg == HASH_ALG_AES) && | |
4616 | (driver_alg->auth_info.mode != HASH_MODE_XCBC) && | |
4617 | (spu->spu_type == SPU_TYPE_SPUM)) | |
4618 | return 0; | |
4619 | ||
4620 | /* SHA3 algorithm variants are not registered for SPU-M or SPU2. */ | |
4621 | if ((driver_alg->auth_info.alg >= HASH_ALG_SHA3_224) && | |
4622 | (spu->spu_subtype != SPU_SUBTYPE_SPU2_V2)) | |
4623 | return 0; | |
4624 | ||
4625 | hash->halg.base.cra_module = THIS_MODULE; | |
4626 | hash->halg.base.cra_priority = hash_pri; | |
4627 | hash->halg.base.cra_alignmask = 0; | |
4628 | hash->halg.base.cra_ctxsize = sizeof(struct iproc_ctx_s); | |
4629 | hash->halg.base.cra_init = ahash_cra_init; | |
4630 | hash->halg.base.cra_exit = generic_cra_exit; | |
6a38f622 | 4631 | hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC; |
9d12ba86 RR |
4632 | hash->halg.statesize = sizeof(struct spu_hash_export_s); |
4633 | ||
4634 | if (driver_alg->auth_info.mode != HASH_MODE_HMAC) { | |
9d12ba86 RR |
4635 | hash->init = ahash_init; |
4636 | hash->update = ahash_update; | |
4637 | hash->final = ahash_final; | |
4638 | hash->finup = ahash_finup; | |
4639 | hash->digest = ahash_digest; | |
4f0129d1 RP |
4640 | if ((driver_alg->auth_info.alg == HASH_ALG_AES) && |
4641 | ((driver_alg->auth_info.mode == HASH_MODE_XCBC) || | |
4642 | (driver_alg->auth_info.mode == HASH_MODE_CMAC))) { | |
4643 | hash->setkey = ahash_setkey; | |
4644 | } | |
9d12ba86 RR |
4645 | } else { |
4646 | hash->setkey = ahash_hmac_setkey; | |
4647 | hash->init = ahash_hmac_init; | |
4648 | hash->update = ahash_hmac_update; | |
4649 | hash->final = ahash_hmac_final; | |
4650 | hash->finup = ahash_hmac_finup; | |
4651 | hash->digest = ahash_hmac_digest; | |
4652 | } | |
4653 | hash->export = ahash_export; | |
4654 | hash->import = ahash_import; | |
4655 | ||
4656 | err = crypto_register_ahash(hash); | |
4657 | /* Mark alg as having been registered, if successful */ | |
4658 | if (err == 0) | |
4659 | driver_alg->registered = true; | |
4660 | pr_debug(" registered ahash %s\n", | |
4661 | hash->halg.base.cra_driver_name); | |
4662 | return err; | |
4663 | } | |
4664 | ||
4665 | static int spu_register_aead(struct iproc_alg_s *driver_alg) | |
4666 | { | |
4667 | struct aead_alg *aead = &driver_alg->alg.aead; | |
4668 | int err; | |
4669 | ||
4670 | aead->base.cra_module = THIS_MODULE; | |
4671 | aead->base.cra_priority = aead_pri; | |
4672 | aead->base.cra_alignmask = 0; | |
4673 | aead->base.cra_ctxsize = sizeof(struct iproc_ctx_s); | |
9d12ba86 | 4674 | |
3f4a537a | 4675 | aead->base.cra_flags |= CRYPTO_ALG_ASYNC; |
9d12ba86 RR |
4676 | /* setkey set in alg initialization */ |
4677 | aead->setauthsize = aead_setauthsize; | |
4678 | aead->encrypt = aead_encrypt; | |
4679 | aead->decrypt = aead_decrypt; | |
4680 | aead->init = aead_cra_init; | |
4681 | aead->exit = aead_cra_exit; | |
4682 | ||
4683 | err = crypto_register_aead(aead); | |
4684 | /* Mark alg as having been registered, if successful */ | |
4685 | if (err == 0) | |
4686 | driver_alg->registered = true; | |
4687 | pr_debug(" registered aead %s\n", aead->base.cra_driver_name); | |
4688 | return err; | |
4689 | } | |
4690 | ||
4691 | /* register crypto algorithms the device supports */ | |
4692 | static int spu_algs_register(struct device *dev) | |
4693 | { | |
4694 | int i, j; | |
4695 | int err; | |
4696 | ||
4697 | for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { | |
4698 | switch (driver_algs[i].type) { | |
4699 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
4700 | err = spu_register_ablkcipher(&driver_algs[i]); | |
4701 | break; | |
4702 | case CRYPTO_ALG_TYPE_AHASH: | |
4703 | err = spu_register_ahash(&driver_algs[i]); | |
4704 | break; | |
4705 | case CRYPTO_ALG_TYPE_AEAD: | |
4706 | err = spu_register_aead(&driver_algs[i]); | |
4707 | break; | |
4708 | default: | |
4709 | dev_err(dev, | |
4710 | "iproc-crypto: unknown alg type: %d", | |
4711 | driver_algs[i].type); | |
4712 | err = -EINVAL; | |
4713 | } | |
4714 | ||
4715 | if (err) { | |
4716 | dev_err(dev, "alg registration failed with error %d\n", | |
4717 | err); | |
4718 | goto err_algs; | |
4719 | } | |
4720 | } | |
4721 | ||
4722 | return 0; | |
4723 | ||
4724 | err_algs: | |
4725 | for (j = 0; j < i; j++) { | |
4726 | /* Skip any algorithm not registered */ | |
4727 | if (!driver_algs[j].registered) | |
4728 | continue; | |
4729 | switch (driver_algs[j].type) { | |
4730 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
4731 | crypto_unregister_alg(&driver_algs[j].alg.crypto); | |
4732 | driver_algs[j].registered = false; | |
4733 | break; | |
4734 | case CRYPTO_ALG_TYPE_AHASH: | |
4735 | crypto_unregister_ahash(&driver_algs[j].alg.hash); | |
4736 | driver_algs[j].registered = false; | |
4737 | break; | |
4738 | case CRYPTO_ALG_TYPE_AEAD: | |
4739 | crypto_unregister_aead(&driver_algs[j].alg.aead); | |
4740 | driver_algs[j].registered = false; | |
4741 | break; | |
4742 | } | |
4743 | } | |
4744 | return err; | |
4745 | } | |
4746 | ||
4747 | /* ==================== Kernel Platform API ==================== */ | |
4748 | ||
4749 | static struct spu_type_subtype spum_ns2_types = { | |
4750 | SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NS2 | |
4751 | }; | |
4752 | ||
4753 | static struct spu_type_subtype spum_nsp_types = { | |
4754 | SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NSP | |
4755 | }; | |
4756 | ||
4757 | static struct spu_type_subtype spu2_types = { | |
4758 | SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V1 | |
4759 | }; | |
4760 | ||
4761 | static struct spu_type_subtype spu2_v2_types = { | |
4762 | SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V2 | |
4763 | }; | |
4764 | ||
4765 | static const struct of_device_id bcm_spu_dt_ids[] = { | |
4766 | { | |
4767 | .compatible = "brcm,spum-crypto", | |
4768 | .data = &spum_ns2_types, | |
4769 | }, | |
4770 | { | |
4771 | .compatible = "brcm,spum-nsp-crypto", | |
4772 | .data = &spum_nsp_types, | |
4773 | }, | |
4774 | { | |
4775 | .compatible = "brcm,spu2-crypto", | |
4776 | .data = &spu2_types, | |
4777 | }, | |
4778 | { | |
4779 | .compatible = "brcm,spu2-v2-crypto", | |
4780 | .data = &spu2_v2_types, | |
4781 | }, | |
4782 | { /* sentinel */ } | |
4783 | }; | |
4784 | ||
4785 | MODULE_DEVICE_TABLE(of, bcm_spu_dt_ids); | |
4786 | ||
4787 | static int spu_dt_read(struct platform_device *pdev) | |
4788 | { | |
4789 | struct device *dev = &pdev->dev; | |
4790 | struct spu_hw *spu = &iproc_priv.spu; | |
4791 | struct resource *spu_ctrl_regs; | |
9d12ba86 | 4792 | const struct spu_type_subtype *matched_spu_type; |
9166c443 | 4793 | struct device_node *dn = pdev->dev.of_node; |
4794 | int err, i; | |
4795 | ||
4796 | /* Count number of mailbox channels */ | |
4797 | spu->num_chan = of_count_phandle_with_args(dn, "mboxes", "#mbox-cells"); | |
9d12ba86 | 4798 | |
d9fa482e CL |
4799 | matched_spu_type = of_device_get_match_data(dev); |
4800 | if (!matched_spu_type) { | |
c6090480 GS |
4801 | dev_err(&pdev->dev, "Failed to match device\n"); |
4802 | return -ENODEV; | |
4803 | } | |
4804 | ||
9166c443 | 4805 | spu->spu_type = matched_spu_type->type; |
4806 | spu->spu_subtype = matched_spu_type->subtype; | |
9d12ba86 | 4807 | |
9166c443 | 4808 | i = 0; |
4809 | for (i = 0; (i < MAX_SPUS) && ((spu_ctrl_regs = | |
4810 | platform_get_resource(pdev, IORESOURCE_MEM, i)) != NULL); i++) { | |
9d12ba86 | 4811 | |
9166c443 | 4812 | spu->reg_vbase[i] = devm_ioremap_resource(dev, spu_ctrl_regs); |
4813 | if (IS_ERR(spu->reg_vbase[i])) { | |
4814 | err = PTR_ERR(spu->reg_vbase[i]); | |
4815 | dev_err(&pdev->dev, "Failed to map registers: %d\n", | |
4816 | err); | |
4817 | spu->reg_vbase[i] = NULL; | |
4818 | return err; | |
4819 | } | |
9d12ba86 | 4820 | } |
9166c443 | 4821 | spu->num_spu = i; |
4822 | dev_dbg(dev, "Device has %d SPUs", spu->num_spu); | |
9d12ba86 RR |
4823 | |
4824 | return 0; | |
4825 | } | |
4826 | ||
4827 | int bcm_spu_probe(struct platform_device *pdev) | |
4828 | { | |
4829 | struct device *dev = &pdev->dev; | |
4830 | struct spu_hw *spu = &iproc_priv.spu; | |
4831 | int err = 0; | |
4832 | ||
9166c443 | 4833 | iproc_priv.pdev = pdev; |
4834 | platform_set_drvdata(iproc_priv.pdev, | |
9d12ba86 RR |
4835 | &iproc_priv); |
4836 | ||
4837 | err = spu_dt_read(pdev); | |
4838 | if (err < 0) | |
4839 | goto failure; | |
4840 | ||
4841 | err = spu_mb_init(&pdev->dev); | |
4842 | if (err < 0) | |
4843 | goto failure; | |
4844 | ||
9d12ba86 RR |
4845 | if (spu->spu_type == SPU_TYPE_SPUM) |
4846 | iproc_priv.bcm_hdr_len = 8; | |
4847 | else if (spu->spu_type == SPU_TYPE_SPU2) | |
4848 | iproc_priv.bcm_hdr_len = 0; | |
4849 | ||
4850 | spu_functions_register(&pdev->dev, spu->spu_type, spu->spu_subtype); | |
4851 | ||
4852 | spu_counters_init(); | |
4853 | ||
4854 | spu_setup_debugfs(); | |
4855 | ||
4856 | err = spu_algs_register(dev); | |
4857 | if (err < 0) | |
4858 | goto fail_reg; | |
4859 | ||
9d12ba86 RR |
4860 | return 0; |
4861 | ||
4862 | fail_reg: | |
4863 | spu_free_debugfs(); | |
4864 | failure: | |
4865 | spu_mb_release(pdev); | |
4866 | dev_err(dev, "%s failed with error %d.\n", __func__, err); | |
4867 | ||
4868 | return err; | |
4869 | } | |
4870 | ||
4871 | int bcm_spu_remove(struct platform_device *pdev) | |
4872 | { | |
4873 | int i; | |
4874 | struct device *dev = &pdev->dev; | |
4875 | char *cdn; | |
4876 | ||
4877 | for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { | |
4878 | /* | |
4879 | * Not all algorithms were registered, depending on whether | |
4880 | * hardware is SPU or SPU2. So here we make sure to skip | |
4881 | * those algorithms that were not previously registered. | |
4882 | */ | |
4883 | if (!driver_algs[i].registered) | |
4884 | continue; | |
4885 | ||
4886 | switch (driver_algs[i].type) { | |
4887 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
4888 | crypto_unregister_alg(&driver_algs[i].alg.crypto); | |
4889 | dev_dbg(dev, " unregistered cipher %s\n", | |
4890 | driver_algs[i].alg.crypto.cra_driver_name); | |
4891 | driver_algs[i].registered = false; | |
4892 | break; | |
4893 | case CRYPTO_ALG_TYPE_AHASH: | |
4894 | crypto_unregister_ahash(&driver_algs[i].alg.hash); | |
4895 | cdn = driver_algs[i].alg.hash.halg.base.cra_driver_name; | |
4896 | dev_dbg(dev, " unregistered hash %s\n", cdn); | |
4897 | driver_algs[i].registered = false; | |
4898 | break; | |
4899 | case CRYPTO_ALG_TYPE_AEAD: | |
4900 | crypto_unregister_aead(&driver_algs[i].alg.aead); | |
4901 | dev_dbg(dev, " unregistered aead %s\n", | |
4902 | driver_algs[i].alg.aead.base.cra_driver_name); | |
4903 | driver_algs[i].registered = false; | |
4904 | break; | |
4905 | } | |
4906 | } | |
4907 | spu_free_debugfs(); | |
4908 | spu_mb_release(pdev); | |
4909 | return 0; | |
4910 | } | |
4911 | ||
4912 | /* ===== Kernel Module API ===== */ | |
4913 | ||
4914 | static struct platform_driver bcm_spu_pdriver = { | |
4915 | .driver = { | |
4916 | .name = "brcm-spu-crypto", | |
4917 | .of_match_table = of_match_ptr(bcm_spu_dt_ids), | |
4918 | }, | |
4919 | .probe = bcm_spu_probe, | |
4920 | .remove = bcm_spu_remove, | |
4921 | }; | |
4922 | module_platform_driver(bcm_spu_pdriver); | |
4923 | ||
4924 | MODULE_AUTHOR("Rob Rice <rob.rice@broadcom.com>"); | |
4925 | MODULE_DESCRIPTION("Broadcom symmetric crypto offload driver"); | |
4926 | MODULE_LICENSE("GPL v2"); |