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cb849fc5 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
9d12ba86 RR |
2 | /* |
3 | * Copyright 2016 Broadcom | |
9d12ba86 RR |
4 | */ |
5 | ||
6 | #include <linux/err.h> | |
7 | #include <linux/module.h> | |
8 | #include <linux/init.h> | |
9 | #include <linux/errno.h> | |
10 | #include <linux/kernel.h> | |
11 | #include <linux/interrupt.h> | |
12 | #include <linux/platform_device.h> | |
13 | #include <linux/scatterlist.h> | |
14 | #include <linux/crypto.h> | |
15 | #include <linux/kthread.h> | |
16 | #include <linux/rtnetlink.h> | |
17 | #include <linux/sched.h> | |
18 | #include <linux/of_address.h> | |
19 | #include <linux/of_device.h> | |
20 | #include <linux/io.h> | |
21 | #include <linux/bitops.h> | |
22 | ||
23 | #include <crypto/algapi.h> | |
24 | #include <crypto/aead.h> | |
25 | #include <crypto/internal/aead.h> | |
26 | #include <crypto/aes.h> | |
05a7238d | 27 | #include <crypto/internal/des.h> |
1126d47d | 28 | #include <crypto/hmac.h> |
9d12ba86 RR |
29 | #include <crypto/sha.h> |
30 | #include <crypto/md5.h> | |
31 | #include <crypto/authenc.h> | |
32 | #include <crypto/skcipher.h> | |
33 | #include <crypto/hash.h> | |
9d12ba86 RR |
34 | #include <crypto/sha3.h> |
35 | ||
36 | #include "util.h" | |
37 | #include "cipher.h" | |
38 | #include "spu.h" | |
39 | #include "spum.h" | |
40 | #include "spu2.h" | |
41 | ||
42 | /* ================= Device Structure ================== */ | |
43 | ||
44 | struct device_private iproc_priv; | |
45 | ||
46 | /* ==================== Parameters ===================== */ | |
47 | ||
48 | int flow_debug_logging; | |
49 | module_param(flow_debug_logging, int, 0644); | |
50 | MODULE_PARM_DESC(flow_debug_logging, "Enable Flow Debug Logging"); | |
51 | ||
52 | int packet_debug_logging; | |
53 | module_param(packet_debug_logging, int, 0644); | |
54 | MODULE_PARM_DESC(packet_debug_logging, "Enable Packet Debug Logging"); | |
55 | ||
56 | int debug_logging_sleep; | |
57 | module_param(debug_logging_sleep, int, 0644); | |
58 | MODULE_PARM_DESC(debug_logging_sleep, "Packet Debug Logging Sleep"); | |
59 | ||
60 | /* | |
61 | * The value of these module parameters is used to set the priority for each | |
62 | * algo type when this driver registers algos with the kernel crypto API. | |
63 | * To use a priority other than the default, set the priority in the insmod or | |
64 | * modprobe. Changing the module priority after init time has no effect. | |
65 | * | |
66 | * The default priorities are chosen to be lower (less preferred) than ARMv8 CE | |
67 | * algos, but more preferred than generic software algos. | |
68 | */ | |
69 | static int cipher_pri = 150; | |
70 | module_param(cipher_pri, int, 0644); | |
71 | MODULE_PARM_DESC(cipher_pri, "Priority for cipher algos"); | |
72 | ||
73 | static int hash_pri = 100; | |
74 | module_param(hash_pri, int, 0644); | |
75 | MODULE_PARM_DESC(hash_pri, "Priority for hash algos"); | |
76 | ||
77 | static int aead_pri = 150; | |
78 | module_param(aead_pri, int, 0644); | |
79 | MODULE_PARM_DESC(aead_pri, "Priority for AEAD algos"); | |
80 | ||
9d12ba86 RR |
81 | /* A type 3 BCM header, expected to precede the SPU header for SPU-M. |
82 | * Bits 3 and 4 in the first byte encode the channel number (the dma ringset). | |
83 | * 0x60 - ring 0 | |
84 | * 0x68 - ring 1 | |
85 | * 0x70 - ring 2 | |
86 | * 0x78 - ring 3 | |
87 | */ | |
dd508618 | 88 | static char BCMHEADER[] = { 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28 }; |
9d12ba86 RR |
89 | /* |
90 | * Some SPU hw does not use BCM header on SPU messages. So BCM_HDR_LEN | |
91 | * is set dynamically after reading SPU type from device tree. | |
92 | */ | |
93 | #define BCM_HDR_LEN iproc_priv.bcm_hdr_len | |
94 | ||
95 | /* min and max time to sleep before retrying when mbox queue is full. usec */ | |
96 | #define MBOX_SLEEP_MIN 800 | |
97 | #define MBOX_SLEEP_MAX 1000 | |
98 | ||
99 | /** | |
100 | * select_channel() - Select a SPU channel to handle a crypto request. Selects | |
101 | * channel in round robin order. | |
102 | * | |
103 | * Return: channel index | |
104 | */ | |
105 | static u8 select_channel(void) | |
106 | { | |
107 | u8 chan_idx = atomic_inc_return(&iproc_priv.next_chan); | |
108 | ||
9166c443 | 109 | return chan_idx % iproc_priv.spu.num_chan; |
9d12ba86 RR |
110 | } |
111 | ||
112 | /** | |
a9c01cd6 AB |
113 | * spu_skcipher_rx_sg_create() - Build up the scatterlist of buffers used to |
114 | * receive a SPU response message for an skcipher request. Includes buffers to | |
9d12ba86 RR |
115 | * catch SPU message headers and the response data. |
116 | * @mssg: mailbox message containing the receive sg | |
117 | * @rctx: crypto request context | |
118 | * @rx_frag_num: number of scatterlist elements required to hold the | |
119 | * SPU response message | |
120 | * @chunksize: Number of bytes of response data expected | |
121 | * @stat_pad_len: Number of bytes required to pad the STAT field to | |
122 | * a 4-byte boundary | |
123 | * | |
124 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
125 | * when the request completes, whether the request is handled successfully or | |
126 | * there is an error. | |
127 | * | |
128 | * Returns: | |
129 | * 0 if successful | |
130 | * < 0 if an error | |
131 | */ | |
132 | static int | |
a9c01cd6 | 133 | spu_skcipher_rx_sg_create(struct brcm_message *mssg, |
9d12ba86 RR |
134 | struct iproc_reqctx_s *rctx, |
135 | u8 rx_frag_num, | |
136 | unsigned int chunksize, u32 stat_pad_len) | |
137 | { | |
138 | struct spu_hw *spu = &iproc_priv.spu; | |
139 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
140 | struct iproc_ctx_s *ctx = rctx->ctx; | |
141 | u32 datalen; /* Number of bytes of response data expected */ | |
142 | ||
143 | mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist), | |
144 | rctx->gfp); | |
145 | if (!mssg->spu.dst) | |
146 | return -ENOMEM; | |
147 | ||
148 | sg = mssg->spu.dst; | |
149 | sg_init_table(sg, rx_frag_num); | |
150 | /* Space for SPU message header */ | |
151 | sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len); | |
152 | ||
153 | /* If XTS tweak in payload, add buffer to receive encrypted tweak */ | |
154 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
155 | spu->spu_xts_tweak_in_payload()) | |
156 | sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak, | |
157 | SPU_XTS_TWEAK_SIZE); | |
158 | ||
159 | /* Copy in each dst sg entry from request, up to chunksize */ | |
160 | datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip, | |
161 | rctx->dst_nents, chunksize); | |
162 | if (datalen < chunksize) { | |
163 | pr_err("%s(): failed to copy dst sg to mbox msg. chunksize %u, datalen %u", | |
164 | __func__, chunksize, datalen); | |
165 | return -EFAULT; | |
166 | } | |
167 | ||
168 | if (ctx->cipher.alg == CIPHER_ALG_RC4) | |
169 | /* Add buffer to catch 260-byte SUPDT field for RC4 */ | |
170 | sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak, SPU_SUPDT_LEN); | |
171 | ||
172 | if (stat_pad_len) | |
173 | sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len); | |
174 | ||
175 | memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN); | |
176 | sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len()); | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | /** | |
a9c01cd6 AB |
182 | * spu_skcipher_tx_sg_create() - Build up the scatterlist of buffers used to |
183 | * send a SPU request message for an skcipher request. Includes SPU message | |
9d12ba86 RR |
184 | * headers and the request data. |
185 | * @mssg: mailbox message containing the transmit sg | |
186 | * @rctx: crypto request context | |
187 | * @tx_frag_num: number of scatterlist elements required to construct the | |
188 | * SPU request message | |
189 | * @chunksize: Number of bytes of request data | |
190 | * @pad_len: Number of pad bytes | |
191 | * | |
192 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
193 | * when the request completes, whether the request is handled successfully or | |
194 | * there is an error. | |
195 | * | |
196 | * Returns: | |
197 | * 0 if successful | |
198 | * < 0 if an error | |
199 | */ | |
200 | static int | |
a9c01cd6 | 201 | spu_skcipher_tx_sg_create(struct brcm_message *mssg, |
9d12ba86 RR |
202 | struct iproc_reqctx_s *rctx, |
203 | u8 tx_frag_num, unsigned int chunksize, u32 pad_len) | |
204 | { | |
205 | struct spu_hw *spu = &iproc_priv.spu; | |
206 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
207 | struct iproc_ctx_s *ctx = rctx->ctx; | |
208 | u32 datalen; /* Number of bytes of response data expected */ | |
209 | u32 stat_len; | |
210 | ||
211 | mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist), | |
212 | rctx->gfp); | |
213 | if (unlikely(!mssg->spu.src)) | |
214 | return -ENOMEM; | |
215 | ||
216 | sg = mssg->spu.src; | |
217 | sg_init_table(sg, tx_frag_num); | |
218 | ||
219 | sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr, | |
220 | BCM_HDR_LEN + ctx->spu_req_hdr_len); | |
221 | ||
222 | /* if XTS tweak in payload, copy from IV (where crypto API puts it) */ | |
223 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
224 | spu->spu_xts_tweak_in_payload()) | |
225 | sg_set_buf(sg++, rctx->msg_buf.iv_ctr, SPU_XTS_TWEAK_SIZE); | |
226 | ||
227 | /* Copy in each src sg entry from request, up to chunksize */ | |
228 | datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip, | |
229 | rctx->src_nents, chunksize); | |
230 | if (unlikely(datalen < chunksize)) { | |
231 | pr_err("%s(): failed to copy src sg to mbox msg", | |
232 | __func__); | |
233 | return -EFAULT; | |
234 | } | |
235 | ||
236 | if (pad_len) | |
237 | sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len); | |
238 | ||
239 | stat_len = spu->spu_tx_status_len(); | |
240 | if (stat_len) { | |
241 | memset(rctx->msg_buf.tx_stat, 0, stat_len); | |
242 | sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len); | |
243 | } | |
244 | return 0; | |
245 | } | |
246 | ||
f0e2ce58 | 247 | static int mailbox_send_message(struct brcm_message *mssg, u32 flags, |
248 | u8 chan_idx) | |
249 | { | |
250 | int err; | |
251 | int retry_cnt = 0; | |
252 | struct device *dev = &(iproc_priv.pdev->dev); | |
253 | ||
254 | err = mbox_send_message(iproc_priv.mbox[chan_idx], mssg); | |
255 | if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) { | |
256 | while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) { | |
257 | /* | |
258 | * Mailbox queue is full. Since MAY_SLEEP is set, assume | |
259 | * not in atomic context and we can wait and try again. | |
260 | */ | |
261 | retry_cnt++; | |
262 | usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX); | |
263 | err = mbox_send_message(iproc_priv.mbox[chan_idx], | |
264 | mssg); | |
265 | atomic_inc(&iproc_priv.mb_no_spc); | |
266 | } | |
267 | } | |
268 | if (err < 0) { | |
269 | atomic_inc(&iproc_priv.mb_send_fail); | |
270 | return err; | |
271 | } | |
272 | ||
273 | /* Check error returned by mailbox controller */ | |
274 | err = mssg->error; | |
275 | if (unlikely(err < 0)) { | |
276 | dev_err(dev, "message error %d", err); | |
277 | /* Signal txdone for mailbox channel */ | |
278 | } | |
279 | ||
280 | /* Signal txdone for mailbox channel */ | |
281 | mbox_client_txdone(iproc_priv.mbox[chan_idx], err); | |
282 | return err; | |
283 | } | |
284 | ||
9d12ba86 | 285 | /** |
a9c01cd6 | 286 | * handle_skcipher_req() - Submit as much of a block cipher request as fits in |
9d12ba86 RR |
287 | * a single SPU request message, starting at the current position in the request |
288 | * data. | |
289 | * @rctx: Crypto request context | |
290 | * | |
291 | * This may be called on the crypto API thread, or, when a request is so large | |
292 | * it must be broken into multiple SPU messages, on the thread used to invoke | |
293 | * the response callback. When requests are broken into multiple SPU | |
294 | * messages, we assume subsequent messages depend on previous results, and | |
295 | * thus always wait for previous results before submitting the next message. | |
296 | * Because requests are submitted in lock step like this, there is no need | |
297 | * to synchronize access to request data structures. | |
298 | * | |
299 | * Return: -EINPROGRESS: request has been accepted and result will be returned | |
300 | * asynchronously | |
301 | * Any other value indicates an error | |
302 | */ | |
a9c01cd6 | 303 | static int handle_skcipher_req(struct iproc_reqctx_s *rctx) |
9d12ba86 RR |
304 | { |
305 | struct spu_hw *spu = &iproc_priv.spu; | |
306 | struct crypto_async_request *areq = rctx->parent; | |
a9c01cd6 AB |
307 | struct skcipher_request *req = |
308 | container_of(areq, struct skcipher_request, base); | |
9d12ba86 RR |
309 | struct iproc_ctx_s *ctx = rctx->ctx; |
310 | struct spu_cipher_parms cipher_parms; | |
311 | int err = 0; | |
312 | unsigned int chunksize = 0; /* Num bytes of request to submit */ | |
313 | int remaining = 0; /* Bytes of request still to process */ | |
314 | int chunk_start; /* Beginning of data for current SPU msg */ | |
315 | ||
316 | /* IV or ctr value to use in this SPU msg */ | |
317 | u8 local_iv_ctr[MAX_IV_SIZE]; | |
318 | u32 stat_pad_len; /* num bytes to align status field */ | |
319 | u32 pad_len; /* total length of all padding */ | |
320 | bool update_key = false; | |
321 | struct brcm_message *mssg; /* mailbox message */ | |
9d12ba86 RR |
322 | |
323 | /* number of entries in src and dst sg in mailbox message. */ | |
324 | u8 rx_frag_num = 2; /* response header and STATUS */ | |
325 | u8 tx_frag_num = 1; /* request header */ | |
326 | ||
327 | flow_log("%s\n", __func__); | |
328 | ||
329 | cipher_parms.alg = ctx->cipher.alg; | |
330 | cipher_parms.mode = ctx->cipher.mode; | |
331 | cipher_parms.type = ctx->cipher_type; | |
332 | cipher_parms.key_len = ctx->enckeylen; | |
333 | cipher_parms.key_buf = ctx->enckey; | |
334 | cipher_parms.iv_buf = local_iv_ctr; | |
335 | cipher_parms.iv_len = rctx->iv_ctr_len; | |
336 | ||
337 | mssg = &rctx->mb_mssg; | |
338 | chunk_start = rctx->src_sent; | |
339 | remaining = rctx->total_todo - chunk_start; | |
340 | ||
341 | /* determine the chunk we are breaking off and update the indexes */ | |
342 | if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) && | |
343 | (remaining > ctx->max_payload)) | |
344 | chunksize = ctx->max_payload; | |
345 | else | |
346 | chunksize = remaining; | |
347 | ||
348 | rctx->src_sent += chunksize; | |
349 | rctx->total_sent = rctx->src_sent; | |
350 | ||
351 | /* Count number of sg entries to be included in this request */ | |
352 | rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize); | |
353 | rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize); | |
354 | ||
355 | if ((ctx->cipher.mode == CIPHER_MODE_CBC) && | |
356 | rctx->is_encrypt && chunk_start) | |
357 | /* | |
358 | * Encrypting non-first first chunk. Copy last block of | |
359 | * previous result to IV for this chunk. | |
360 | */ | |
361 | sg_copy_part_to_buf(req->dst, rctx->msg_buf.iv_ctr, | |
362 | rctx->iv_ctr_len, | |
363 | chunk_start - rctx->iv_ctr_len); | |
364 | ||
365 | if (rctx->iv_ctr_len) { | |
366 | /* get our local copy of the iv */ | |
367 | __builtin_memcpy(local_iv_ctr, rctx->msg_buf.iv_ctr, | |
368 | rctx->iv_ctr_len); | |
369 | ||
370 | /* generate the next IV if possible */ | |
371 | if ((ctx->cipher.mode == CIPHER_MODE_CBC) && | |
372 | !rctx->is_encrypt) { | |
373 | /* | |
374 | * CBC Decrypt: next IV is the last ciphertext block in | |
375 | * this chunk | |
376 | */ | |
377 | sg_copy_part_to_buf(req->src, rctx->msg_buf.iv_ctr, | |
378 | rctx->iv_ctr_len, | |
379 | rctx->src_sent - rctx->iv_ctr_len); | |
380 | } else if (ctx->cipher.mode == CIPHER_MODE_CTR) { | |
381 | /* | |
382 | * The SPU hardware increments the counter once for | |
383 | * each AES block of 16 bytes. So update the counter | |
384 | * for the next chunk, if there is one. Note that for | |
385 | * this chunk, the counter has already been copied to | |
386 | * local_iv_ctr. We can assume a block size of 16, | |
387 | * because we only support CTR mode for AES, not for | |
388 | * any other cipher alg. | |
389 | */ | |
390 | add_to_ctr(rctx->msg_buf.iv_ctr, chunksize >> 4); | |
391 | } | |
392 | } | |
393 | ||
394 | if (ctx->cipher.alg == CIPHER_ALG_RC4) { | |
395 | rx_frag_num++; | |
396 | if (chunk_start) { | |
397 | /* | |
398 | * for non-first RC4 chunks, use SUPDT from previous | |
399 | * response as key for this chunk. | |
400 | */ | |
401 | cipher_parms.key_buf = rctx->msg_buf.c.supdt_tweak; | |
402 | update_key = true; | |
403 | cipher_parms.type = CIPHER_TYPE_UPDT; | |
404 | } else if (!rctx->is_encrypt) { | |
405 | /* | |
406 | * First RC4 chunk. For decrypt, key in pre-built msg | |
407 | * header may have been changed if encrypt required | |
408 | * multiple chunks. So revert the key to the | |
409 | * ctx->enckey value. | |
410 | */ | |
411 | update_key = true; | |
412 | cipher_parms.type = CIPHER_TYPE_INIT; | |
413 | } | |
414 | } | |
415 | ||
416 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
417 | flow_log("max_payload infinite\n"); | |
418 | else | |
419 | flow_log("max_payload %u\n", ctx->max_payload); | |
420 | ||
421 | flow_log("sent:%u start:%u remains:%u size:%u\n", | |
422 | rctx->src_sent, chunk_start, remaining, chunksize); | |
423 | ||
424 | /* Copy SPU header template created at setkey time */ | |
425 | memcpy(rctx->msg_buf.bcm_spu_req_hdr, ctx->bcm_spu_req_hdr, | |
426 | sizeof(rctx->msg_buf.bcm_spu_req_hdr)); | |
427 | ||
428 | /* | |
429 | * Pass SUPDT field as key. Key field in finish() call is only used | |
430 | * when update_key has been set above for RC4. Will be ignored in | |
431 | * all other cases. | |
432 | */ | |
433 | spu->spu_cipher_req_finish(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
434 | ctx->spu_req_hdr_len, !(rctx->is_encrypt), | |
435 | &cipher_parms, update_key, chunksize); | |
436 | ||
437 | atomic64_add(chunksize, &iproc_priv.bytes_out); | |
438 | ||
439 | stat_pad_len = spu->spu_wordalign_padlen(chunksize); | |
440 | if (stat_pad_len) | |
441 | rx_frag_num++; | |
442 | pad_len = stat_pad_len; | |
443 | if (pad_len) { | |
444 | tx_frag_num++; | |
445 | spu->spu_request_pad(rctx->msg_buf.spu_req_pad, 0, | |
446 | 0, ctx->auth.alg, ctx->auth.mode, | |
447 | rctx->total_sent, stat_pad_len); | |
448 | } | |
449 | ||
450 | spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
451 | ctx->spu_req_hdr_len); | |
452 | packet_log("payload:\n"); | |
453 | dump_sg(rctx->src_sg, rctx->src_skip, chunksize); | |
454 | packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len); | |
455 | ||
456 | /* | |
457 | * Build mailbox message containing SPU request msg and rx buffers | |
458 | * to catch response message | |
459 | */ | |
460 | memset(mssg, 0, sizeof(*mssg)); | |
461 | mssg->type = BRCM_MESSAGE_SPU; | |
462 | mssg->ctx = rctx; /* Will be returned in response */ | |
463 | ||
464 | /* Create rx scatterlist to catch result */ | |
465 | rx_frag_num += rctx->dst_nents; | |
466 | ||
467 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
468 | spu->spu_xts_tweak_in_payload()) | |
469 | rx_frag_num++; /* extra sg to insert tweak */ | |
470 | ||
a9c01cd6 | 471 | err = spu_skcipher_rx_sg_create(mssg, rctx, rx_frag_num, chunksize, |
9d12ba86 RR |
472 | stat_pad_len); |
473 | if (err) | |
474 | return err; | |
475 | ||
476 | /* Create tx scatterlist containing SPU request message */ | |
477 | tx_frag_num += rctx->src_nents; | |
478 | if (spu->spu_tx_status_len()) | |
479 | tx_frag_num++; | |
480 | ||
481 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
482 | spu->spu_xts_tweak_in_payload()) | |
483 | tx_frag_num++; /* extra sg to insert tweak */ | |
484 | ||
a9c01cd6 | 485 | err = spu_skcipher_tx_sg_create(mssg, rctx, tx_frag_num, chunksize, |
9d12ba86 RR |
486 | pad_len); |
487 | if (err) | |
488 | return err; | |
489 | ||
f0e2ce58 | 490 | err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx); |
491 | if (unlikely(err < 0)) | |
9d12ba86 | 492 | return err; |
9d12ba86 RR |
493 | |
494 | return -EINPROGRESS; | |
495 | } | |
496 | ||
497 | /** | |
a9c01cd6 | 498 | * handle_skcipher_resp() - Process a block cipher SPU response. Updates the |
9d12ba86 RR |
499 | * total received count for the request and updates global stats. |
500 | * @rctx: Crypto request context | |
501 | */ | |
a9c01cd6 | 502 | static void handle_skcipher_resp(struct iproc_reqctx_s *rctx) |
9d12ba86 RR |
503 | { |
504 | struct spu_hw *spu = &iproc_priv.spu; | |
505 | #ifdef DEBUG | |
506 | struct crypto_async_request *areq = rctx->parent; | |
a9c01cd6 | 507 | struct skcipher_request *req = skcipher_request_cast(areq); |
9d12ba86 RR |
508 | #endif |
509 | struct iproc_ctx_s *ctx = rctx->ctx; | |
510 | u32 payload_len; | |
511 | ||
512 | /* See how much data was returned */ | |
513 | payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr); | |
514 | ||
515 | /* | |
516 | * In XTS mode, the first SPU_XTS_TWEAK_SIZE bytes may be the | |
517 | * encrypted tweak ("i") value; we don't count those. | |
518 | */ | |
519 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
520 | spu->spu_xts_tweak_in_payload() && | |
521 | (payload_len >= SPU_XTS_TWEAK_SIZE)) | |
522 | payload_len -= SPU_XTS_TWEAK_SIZE; | |
523 | ||
524 | atomic64_add(payload_len, &iproc_priv.bytes_in); | |
525 | ||
526 | flow_log("%s() offset: %u, bd_len: %u BD:\n", | |
527 | __func__, rctx->total_received, payload_len); | |
528 | ||
529 | dump_sg(req->dst, rctx->total_received, payload_len); | |
530 | if (ctx->cipher.alg == CIPHER_ALG_RC4) | |
531 | packet_dump(" supdt ", rctx->msg_buf.c.supdt_tweak, | |
532 | SPU_SUPDT_LEN); | |
533 | ||
534 | rctx->total_received += payload_len; | |
535 | if (rctx->total_received == rctx->total_todo) { | |
536 | atomic_inc(&iproc_priv.op_counts[SPU_OP_CIPHER]); | |
537 | atomic_inc( | |
538 | &iproc_priv.cipher_cnt[ctx->cipher.alg][ctx->cipher.mode]); | |
539 | } | |
540 | } | |
541 | ||
542 | /** | |
543 | * spu_ahash_rx_sg_create() - Build up the scatterlist of buffers used to | |
544 | * receive a SPU response message for an ahash request. | |
545 | * @mssg: mailbox message containing the receive sg | |
546 | * @rctx: crypto request context | |
547 | * @rx_frag_num: number of scatterlist elements required to hold the | |
548 | * SPU response message | |
549 | * @digestsize: length of hash digest, in bytes | |
550 | * @stat_pad_len: Number of bytes required to pad the STAT field to | |
551 | * a 4-byte boundary | |
552 | * | |
553 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
554 | * when the request completes, whether the request is handled successfully or | |
555 | * there is an error. | |
556 | * | |
557 | * Return: | |
558 | * 0 if successful | |
559 | * < 0 if an error | |
560 | */ | |
561 | static int | |
562 | spu_ahash_rx_sg_create(struct brcm_message *mssg, | |
563 | struct iproc_reqctx_s *rctx, | |
564 | u8 rx_frag_num, unsigned int digestsize, | |
565 | u32 stat_pad_len) | |
566 | { | |
567 | struct spu_hw *spu = &iproc_priv.spu; | |
568 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
569 | struct iproc_ctx_s *ctx = rctx->ctx; | |
570 | ||
571 | mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist), | |
572 | rctx->gfp); | |
573 | if (!mssg->spu.dst) | |
574 | return -ENOMEM; | |
575 | ||
576 | sg = mssg->spu.dst; | |
577 | sg_init_table(sg, rx_frag_num); | |
578 | /* Space for SPU message header */ | |
579 | sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len); | |
580 | ||
581 | /* Space for digest */ | |
582 | sg_set_buf(sg++, rctx->msg_buf.digest, digestsize); | |
583 | ||
584 | if (stat_pad_len) | |
585 | sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len); | |
586 | ||
587 | memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN); | |
588 | sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len()); | |
589 | return 0; | |
590 | } | |
591 | ||
592 | /** | |
593 | * spu_ahash_tx_sg_create() - Build up the scatterlist of buffers used to send | |
594 | * a SPU request message for an ahash request. Includes SPU message headers and | |
595 | * the request data. | |
596 | * @mssg: mailbox message containing the transmit sg | |
597 | * @rctx: crypto request context | |
598 | * @tx_frag_num: number of scatterlist elements required to construct the | |
599 | * SPU request message | |
600 | * @spu_hdr_len: length in bytes of SPU message header | |
601 | * @hash_carry_len: Number of bytes of data carried over from previous req | |
602 | * @new_data_len: Number of bytes of new request data | |
603 | * @pad_len: Number of pad bytes | |
604 | * | |
605 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
606 | * when the request completes, whether the request is handled successfully or | |
607 | * there is an error. | |
608 | * | |
609 | * Return: | |
610 | * 0 if successful | |
611 | * < 0 if an error | |
612 | */ | |
613 | static int | |
614 | spu_ahash_tx_sg_create(struct brcm_message *mssg, | |
615 | struct iproc_reqctx_s *rctx, | |
616 | u8 tx_frag_num, | |
617 | u32 spu_hdr_len, | |
618 | unsigned int hash_carry_len, | |
619 | unsigned int new_data_len, u32 pad_len) | |
620 | { | |
621 | struct spu_hw *spu = &iproc_priv.spu; | |
622 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
623 | u32 datalen; /* Number of bytes of response data expected */ | |
624 | u32 stat_len; | |
625 | ||
626 | mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist), | |
627 | rctx->gfp); | |
628 | if (!mssg->spu.src) | |
629 | return -ENOMEM; | |
630 | ||
631 | sg = mssg->spu.src; | |
632 | sg_init_table(sg, tx_frag_num); | |
633 | ||
634 | sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr, | |
635 | BCM_HDR_LEN + spu_hdr_len); | |
636 | ||
637 | if (hash_carry_len) | |
638 | sg_set_buf(sg++, rctx->hash_carry, hash_carry_len); | |
639 | ||
640 | if (new_data_len) { | |
641 | /* Copy in each src sg entry from request, up to chunksize */ | |
642 | datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip, | |
643 | rctx->src_nents, new_data_len); | |
644 | if (datalen < new_data_len) { | |
645 | pr_err("%s(): failed to copy src sg to mbox msg", | |
646 | __func__); | |
647 | return -EFAULT; | |
648 | } | |
649 | } | |
650 | ||
651 | if (pad_len) | |
652 | sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len); | |
653 | ||
654 | stat_len = spu->spu_tx_status_len(); | |
655 | if (stat_len) { | |
656 | memset(rctx->msg_buf.tx_stat, 0, stat_len); | |
657 | sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len); | |
658 | } | |
659 | ||
660 | return 0; | |
661 | } | |
662 | ||
663 | /** | |
664 | * handle_ahash_req() - Process an asynchronous hash request from the crypto | |
665 | * API. | |
666 | * @rctx: Crypto request context | |
667 | * | |
668 | * Builds a SPU request message embedded in a mailbox message and submits the | |
669 | * mailbox message on a selected mailbox channel. The SPU request message is | |
670 | * constructed as a scatterlist, including entries from the crypto API's | |
671 | * src scatterlist to avoid copying the data to be hashed. This function is | |
672 | * called either on the thread from the crypto API, or, in the case that the | |
673 | * crypto API request is too large to fit in a single SPU request message, | |
674 | * on the thread that invokes the receive callback with a response message. | |
675 | * Because some operations require the response from one chunk before the next | |
676 | * chunk can be submitted, we always wait for the response for the previous | |
677 | * chunk before submitting the next chunk. Because requests are submitted in | |
678 | * lock step like this, there is no need to synchronize access to request data | |
679 | * structures. | |
680 | * | |
681 | * Return: | |
682 | * -EINPROGRESS: request has been submitted to SPU and response will be | |
683 | * returned asynchronously | |
684 | * -EAGAIN: non-final request included a small amount of data, which for | |
685 | * efficiency we did not submit to the SPU, but instead stored | |
686 | * to be submitted to the SPU with the next part of the request | |
687 | * other: an error code | |
688 | */ | |
689 | static int handle_ahash_req(struct iproc_reqctx_s *rctx) | |
690 | { | |
691 | struct spu_hw *spu = &iproc_priv.spu; | |
692 | struct crypto_async_request *areq = rctx->parent; | |
693 | struct ahash_request *req = ahash_request_cast(areq); | |
694 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
695 | struct crypto_tfm *tfm = crypto_ahash_tfm(ahash); | |
696 | unsigned int blocksize = crypto_tfm_alg_blocksize(tfm); | |
697 | struct iproc_ctx_s *ctx = rctx->ctx; | |
698 | ||
699 | /* number of bytes still to be hashed in this req */ | |
700 | unsigned int nbytes_to_hash = 0; | |
701 | int err = 0; | |
702 | unsigned int chunksize = 0; /* length of hash carry + new data */ | |
703 | /* | |
704 | * length of new data, not from hash carry, to be submitted in | |
705 | * this hw request | |
706 | */ | |
707 | unsigned int new_data_len; | |
708 | ||
707d0cf8 | 709 | unsigned int __maybe_unused chunk_start = 0; |
9d12ba86 RR |
710 | u32 db_size; /* Length of data field, incl gcm and hash padding */ |
711 | int pad_len = 0; /* total pad len, including gcm, hash, stat padding */ | |
712 | u32 data_pad_len = 0; /* length of GCM/CCM padding */ | |
713 | u32 stat_pad_len = 0; /* length of padding to align STATUS word */ | |
714 | struct brcm_message *mssg; /* mailbox message */ | |
715 | struct spu_request_opts req_opts; | |
716 | struct spu_cipher_parms cipher_parms; | |
717 | struct spu_hash_parms hash_parms; | |
718 | struct spu_aead_parms aead_parms; | |
719 | unsigned int local_nbuf; | |
720 | u32 spu_hdr_len; | |
721 | unsigned int digestsize; | |
722 | u16 rem = 0; | |
9d12ba86 RR |
723 | |
724 | /* | |
725 | * number of entries in src and dst sg. Always includes SPU msg header. | |
726 | * rx always includes a buffer to catch digest and STATUS. | |
727 | */ | |
728 | u8 rx_frag_num = 3; | |
729 | u8 tx_frag_num = 1; | |
730 | ||
731 | flow_log("total_todo %u, total_sent %u\n", | |
732 | rctx->total_todo, rctx->total_sent); | |
733 | ||
734 | memset(&req_opts, 0, sizeof(req_opts)); | |
735 | memset(&cipher_parms, 0, sizeof(cipher_parms)); | |
736 | memset(&hash_parms, 0, sizeof(hash_parms)); | |
737 | memset(&aead_parms, 0, sizeof(aead_parms)); | |
738 | ||
739 | req_opts.bd_suppress = true; | |
740 | hash_parms.alg = ctx->auth.alg; | |
741 | hash_parms.mode = ctx->auth.mode; | |
742 | hash_parms.type = HASH_TYPE_NONE; | |
743 | hash_parms.key_buf = (u8 *)ctx->authkey; | |
744 | hash_parms.key_len = ctx->authkeylen; | |
745 | ||
746 | /* | |
747 | * For hash algorithms below assignment looks bit odd but | |
748 | * it's needed for AES-XCBC and AES-CMAC hash algorithms | |
749 | * to differentiate between 128, 192, 256 bit key values. | |
750 | * Based on the key values, hash algorithm is selected. | |
751 | * For example for 128 bit key, hash algorithm is AES-128. | |
752 | */ | |
753 | cipher_parms.type = ctx->cipher_type; | |
754 | ||
755 | mssg = &rctx->mb_mssg; | |
756 | chunk_start = rctx->src_sent; | |
757 | ||
758 | /* | |
759 | * Compute the amount remaining to hash. This may include data | |
760 | * carried over from previous requests. | |
761 | */ | |
762 | nbytes_to_hash = rctx->total_todo - rctx->total_sent; | |
763 | chunksize = nbytes_to_hash; | |
764 | if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) && | |
765 | (chunksize > ctx->max_payload)) | |
766 | chunksize = ctx->max_payload; | |
767 | ||
768 | /* | |
769 | * If this is not a final request and the request data is not a multiple | |
770 | * of a full block, then simply park the extra data and prefix it to the | |
771 | * data for the next request. | |
772 | */ | |
773 | if (!rctx->is_final) { | |
774 | u8 *dest = rctx->hash_carry + rctx->hash_carry_len; | |
775 | u16 new_len; /* len of data to add to hash carry */ | |
776 | ||
777 | rem = chunksize % blocksize; /* remainder */ | |
778 | if (rem) { | |
779 | /* chunksize not a multiple of blocksize */ | |
780 | chunksize -= rem; | |
781 | if (chunksize == 0) { | |
782 | /* Don't have a full block to submit to hw */ | |
783 | new_len = rem - rctx->hash_carry_len; | |
784 | sg_copy_part_to_buf(req->src, dest, new_len, | |
785 | rctx->src_sent); | |
786 | rctx->hash_carry_len = rem; | |
787 | flow_log("Exiting with hash carry len: %u\n", | |
788 | rctx->hash_carry_len); | |
789 | packet_dump(" buf: ", | |
790 | rctx->hash_carry, | |
791 | rctx->hash_carry_len); | |
792 | return -EAGAIN; | |
793 | } | |
794 | } | |
795 | } | |
796 | ||
797 | /* if we have hash carry, then prefix it to the data in this request */ | |
798 | local_nbuf = rctx->hash_carry_len; | |
799 | rctx->hash_carry_len = 0; | |
800 | if (local_nbuf) | |
801 | tx_frag_num++; | |
802 | new_data_len = chunksize - local_nbuf; | |
803 | ||
804 | /* Count number of sg entries to be used in this request */ | |
805 | rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, | |
806 | new_data_len); | |
807 | ||
808 | /* AES hashing keeps key size in type field, so need to copy it here */ | |
809 | if (hash_parms.alg == HASH_ALG_AES) | |
a2e5d408 | 810 | hash_parms.type = (enum hash_type)cipher_parms.type; |
9d12ba86 RR |
811 | else |
812 | hash_parms.type = spu->spu_hash_type(rctx->total_sent); | |
813 | ||
814 | digestsize = spu->spu_digest_size(ctx->digestsize, ctx->auth.alg, | |
815 | hash_parms.type); | |
816 | hash_parms.digestsize = digestsize; | |
817 | ||
818 | /* update the indexes */ | |
819 | rctx->total_sent += chunksize; | |
820 | /* if you sent a prebuf then that wasn't from this req->src */ | |
821 | rctx->src_sent += new_data_len; | |
822 | ||
823 | if ((rctx->total_sent == rctx->total_todo) && rctx->is_final) | |
824 | hash_parms.pad_len = spu->spu_hash_pad_len(hash_parms.alg, | |
825 | hash_parms.mode, | |
826 | chunksize, | |
827 | blocksize); | |
828 | ||
829 | /* | |
830 | * If a non-first chunk, then include the digest returned from the | |
831 | * previous chunk so that hw can add to it (except for AES types). | |
832 | */ | |
833 | if ((hash_parms.type == HASH_TYPE_UPDT) && | |
834 | (hash_parms.alg != HASH_ALG_AES)) { | |
835 | hash_parms.key_buf = rctx->incr_hash; | |
836 | hash_parms.key_len = digestsize; | |
837 | } | |
838 | ||
839 | atomic64_add(chunksize, &iproc_priv.bytes_out); | |
840 | ||
841 | flow_log("%s() final: %u nbuf: %u ", | |
842 | __func__, rctx->is_final, local_nbuf); | |
843 | ||
844 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
845 | flow_log("max_payload infinite\n"); | |
846 | else | |
847 | flow_log("max_payload %u\n", ctx->max_payload); | |
848 | ||
849 | flow_log("chunk_start: %u chunk_size: %u\n", chunk_start, chunksize); | |
850 | ||
851 | /* Prepend SPU header with type 3 BCM header */ | |
852 | memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN); | |
853 | ||
854 | hash_parms.prebuf_len = local_nbuf; | |
855 | spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr + | |
856 | BCM_HDR_LEN, | |
857 | &req_opts, &cipher_parms, | |
858 | &hash_parms, &aead_parms, | |
859 | new_data_len); | |
860 | ||
861 | if (spu_hdr_len == 0) { | |
862 | pr_err("Failed to create SPU request header\n"); | |
863 | return -EFAULT; | |
864 | } | |
865 | ||
866 | /* | |
867 | * Determine total length of padding required. Put all padding in one | |
868 | * buffer. | |
869 | */ | |
870 | data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, chunksize); | |
871 | db_size = spu_real_db_size(0, 0, local_nbuf, new_data_len, | |
872 | 0, 0, hash_parms.pad_len); | |
873 | if (spu->spu_tx_status_len()) | |
874 | stat_pad_len = spu->spu_wordalign_padlen(db_size); | |
875 | if (stat_pad_len) | |
876 | rx_frag_num++; | |
877 | pad_len = hash_parms.pad_len + data_pad_len + stat_pad_len; | |
878 | if (pad_len) { | |
879 | tx_frag_num++; | |
880 | spu->spu_request_pad(rctx->msg_buf.spu_req_pad, data_pad_len, | |
881 | hash_parms.pad_len, ctx->auth.alg, | |
882 | ctx->auth.mode, rctx->total_sent, | |
883 | stat_pad_len); | |
884 | } | |
885 | ||
886 | spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
887 | spu_hdr_len); | |
888 | packet_dump(" prebuf: ", rctx->hash_carry, local_nbuf); | |
889 | flow_log("Data:\n"); | |
890 | dump_sg(rctx->src_sg, rctx->src_skip, new_data_len); | |
891 | packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len); | |
892 | ||
893 | /* | |
894 | * Build mailbox message containing SPU request msg and rx buffers | |
895 | * to catch response message | |
896 | */ | |
897 | memset(mssg, 0, sizeof(*mssg)); | |
898 | mssg->type = BRCM_MESSAGE_SPU; | |
899 | mssg->ctx = rctx; /* Will be returned in response */ | |
900 | ||
901 | /* Create rx scatterlist to catch result */ | |
902 | err = spu_ahash_rx_sg_create(mssg, rctx, rx_frag_num, digestsize, | |
903 | stat_pad_len); | |
904 | if (err) | |
905 | return err; | |
906 | ||
907 | /* Create tx scatterlist containing SPU request message */ | |
908 | tx_frag_num += rctx->src_nents; | |
909 | if (spu->spu_tx_status_len()) | |
910 | tx_frag_num++; | |
911 | err = spu_ahash_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len, | |
912 | local_nbuf, new_data_len, pad_len); | |
913 | if (err) | |
914 | return err; | |
915 | ||
f0e2ce58 | 916 | err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx); |
917 | if (unlikely(err < 0)) | |
9d12ba86 | 918 | return err; |
f0e2ce58 | 919 | |
9d12ba86 RR |
920 | return -EINPROGRESS; |
921 | } | |
922 | ||
923 | /** | |
924 | * spu_hmac_outer_hash() - Request synchonous software compute of the outer hash | |
925 | * for an HMAC request. | |
926 | * @req: The HMAC request from the crypto API | |
927 | * @ctx: The session context | |
928 | * | |
929 | * Return: 0 if synchronous hash operation successful | |
930 | * -EINVAL if the hash algo is unrecognized | |
931 | * any other value indicates an error | |
932 | */ | |
933 | static int spu_hmac_outer_hash(struct ahash_request *req, | |
934 | struct iproc_ctx_s *ctx) | |
935 | { | |
936 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
937 | unsigned int blocksize = | |
938 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash)); | |
939 | int rc; | |
940 | ||
941 | switch (ctx->auth.alg) { | |
942 | case HASH_ALG_MD5: | |
943 | rc = do_shash("md5", req->result, ctx->opad, blocksize, | |
944 | req->result, ctx->digestsize, NULL, 0); | |
945 | break; | |
946 | case HASH_ALG_SHA1: | |
947 | rc = do_shash("sha1", req->result, ctx->opad, blocksize, | |
948 | req->result, ctx->digestsize, NULL, 0); | |
949 | break; | |
950 | case HASH_ALG_SHA224: | |
951 | rc = do_shash("sha224", req->result, ctx->opad, blocksize, | |
952 | req->result, ctx->digestsize, NULL, 0); | |
953 | break; | |
954 | case HASH_ALG_SHA256: | |
955 | rc = do_shash("sha256", req->result, ctx->opad, blocksize, | |
956 | req->result, ctx->digestsize, NULL, 0); | |
957 | break; | |
958 | case HASH_ALG_SHA384: | |
959 | rc = do_shash("sha384", req->result, ctx->opad, blocksize, | |
960 | req->result, ctx->digestsize, NULL, 0); | |
961 | break; | |
962 | case HASH_ALG_SHA512: | |
963 | rc = do_shash("sha512", req->result, ctx->opad, blocksize, | |
964 | req->result, ctx->digestsize, NULL, 0); | |
965 | break; | |
966 | default: | |
967 | pr_err("%s() Error : unknown hmac type\n", __func__); | |
968 | rc = -EINVAL; | |
969 | } | |
970 | return rc; | |
971 | } | |
972 | ||
973 | /** | |
974 | * ahash_req_done() - Process a hash result from the SPU hardware. | |
975 | * @rctx: Crypto request context | |
976 | * | |
977 | * Return: 0 if successful | |
978 | * < 0 if an error | |
979 | */ | |
980 | static int ahash_req_done(struct iproc_reqctx_s *rctx) | |
981 | { | |
982 | struct spu_hw *spu = &iproc_priv.spu; | |
983 | struct crypto_async_request *areq = rctx->parent; | |
984 | struct ahash_request *req = ahash_request_cast(areq); | |
985 | struct iproc_ctx_s *ctx = rctx->ctx; | |
986 | int err; | |
987 | ||
988 | memcpy(req->result, rctx->msg_buf.digest, ctx->digestsize); | |
989 | ||
990 | if (spu->spu_type == SPU_TYPE_SPUM) { | |
991 | /* byte swap the output from the UPDT function to network byte | |
992 | * order | |
993 | */ | |
994 | if (ctx->auth.alg == HASH_ALG_MD5) { | |
995 | __swab32s((u32 *)req->result); | |
996 | __swab32s(((u32 *)req->result) + 1); | |
997 | __swab32s(((u32 *)req->result) + 2); | |
998 | __swab32s(((u32 *)req->result) + 3); | |
999 | __swab32s(((u32 *)req->result) + 4); | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | flow_dump(" digest ", req->result, ctx->digestsize); | |
1004 | ||
1005 | /* if this an HMAC then do the outer hash */ | |
1006 | if (rctx->is_sw_hmac) { | |
1007 | err = spu_hmac_outer_hash(req, ctx); | |
1008 | if (err < 0) | |
1009 | return err; | |
1010 | flow_dump(" hmac: ", req->result, ctx->digestsize); | |
1011 | } | |
1012 | ||
1013 | if (rctx->is_sw_hmac || ctx->auth.mode == HASH_MODE_HMAC) { | |
1014 | atomic_inc(&iproc_priv.op_counts[SPU_OP_HMAC]); | |
1015 | atomic_inc(&iproc_priv.hmac_cnt[ctx->auth.alg]); | |
1016 | } else { | |
1017 | atomic_inc(&iproc_priv.op_counts[SPU_OP_HASH]); | |
1018 | atomic_inc(&iproc_priv.hash_cnt[ctx->auth.alg]); | |
1019 | } | |
1020 | ||
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | /** | |
1025 | * handle_ahash_resp() - Process a SPU response message for a hash request. | |
1026 | * Checks if the entire crypto API request has been processed, and if so, | |
1027 | * invokes post processing on the result. | |
1028 | * @rctx: Crypto request context | |
1029 | */ | |
1030 | static void handle_ahash_resp(struct iproc_reqctx_s *rctx) | |
1031 | { | |
1032 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1033 | #ifdef DEBUG | |
1034 | struct crypto_async_request *areq = rctx->parent; | |
1035 | struct ahash_request *req = ahash_request_cast(areq); | |
1036 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
1037 | unsigned int blocksize = | |
1038 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash)); | |
1039 | #endif | |
1040 | /* | |
1041 | * Save hash to use as input to next op if incremental. Might be copying | |
1042 | * too much, but that's easier than figuring out actual digest size here | |
1043 | */ | |
1044 | memcpy(rctx->incr_hash, rctx->msg_buf.digest, MAX_DIGEST_SIZE); | |
1045 | ||
1046 | flow_log("%s() blocksize:%u digestsize:%u\n", | |
1047 | __func__, blocksize, ctx->digestsize); | |
1048 | ||
1049 | atomic64_add(ctx->digestsize, &iproc_priv.bytes_in); | |
1050 | ||
1051 | if (rctx->is_final && (rctx->total_sent == rctx->total_todo)) | |
1052 | ahash_req_done(rctx); | |
1053 | } | |
1054 | ||
1055 | /** | |
1056 | * spu_aead_rx_sg_create() - Build up the scatterlist of buffers used to receive | |
1057 | * a SPU response message for an AEAD request. Includes buffers to catch SPU | |
1058 | * message headers and the response data. | |
1059 | * @mssg: mailbox message containing the receive sg | |
1060 | * @rctx: crypto request context | |
1061 | * @rx_frag_num: number of scatterlist elements required to hold the | |
1062 | * SPU response message | |
1063 | * @assoc_len: Length of associated data included in the crypto request | |
1064 | * @ret_iv_len: Length of IV returned in response | |
1065 | * @resp_len: Number of bytes of response data expected to be written to | |
1066 | * dst buffer from crypto API | |
1067 | * @digestsize: Length of hash digest, in bytes | |
1068 | * @stat_pad_len: Number of bytes required to pad the STAT field to | |
1069 | * a 4-byte boundary | |
1070 | * | |
1071 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
1072 | * when the request completes, whether the request is handled successfully or | |
1073 | * there is an error. | |
1074 | * | |
1075 | * Returns: | |
1076 | * 0 if successful | |
1077 | * < 0 if an error | |
1078 | */ | |
1079 | static int spu_aead_rx_sg_create(struct brcm_message *mssg, | |
1080 | struct aead_request *req, | |
1081 | struct iproc_reqctx_s *rctx, | |
1082 | u8 rx_frag_num, | |
1083 | unsigned int assoc_len, | |
1084 | u32 ret_iv_len, unsigned int resp_len, | |
1085 | unsigned int digestsize, u32 stat_pad_len) | |
1086 | { | |
1087 | struct spu_hw *spu = &iproc_priv.spu; | |
1088 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
1089 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1090 | u32 datalen; /* Number of bytes of response data expected */ | |
1091 | u32 assoc_buf_len; | |
1092 | u8 data_padlen = 0; | |
1093 | ||
1094 | if (ctx->is_rfc4543) { | |
1095 | /* RFC4543: only pad after data, not after AAD */ | |
1096 | data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1097 | assoc_len + resp_len); | |
1098 | assoc_buf_len = assoc_len; | |
1099 | } else { | |
1100 | data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1101 | resp_len); | |
1102 | assoc_buf_len = spu->spu_assoc_resp_len(ctx->cipher.mode, | |
1103 | assoc_len, ret_iv_len, | |
1104 | rctx->is_encrypt); | |
1105 | } | |
1106 | ||
1107 | if (ctx->cipher.mode == CIPHER_MODE_CCM) | |
1108 | /* ICV (after data) must be in the next 32-bit word for CCM */ | |
1109 | data_padlen += spu->spu_wordalign_padlen(assoc_buf_len + | |
1110 | resp_len + | |
1111 | data_padlen); | |
1112 | ||
1113 | if (data_padlen) | |
1114 | /* have to catch gcm pad in separate buffer */ | |
1115 | rx_frag_num++; | |
1116 | ||
1117 | mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist), | |
1118 | rctx->gfp); | |
1119 | if (!mssg->spu.dst) | |
1120 | return -ENOMEM; | |
1121 | ||
1122 | sg = mssg->spu.dst; | |
1123 | sg_init_table(sg, rx_frag_num); | |
1124 | ||
1125 | /* Space for SPU message header */ | |
1126 | sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len); | |
1127 | ||
1128 | if (assoc_buf_len) { | |
1129 | /* | |
1130 | * Don't write directly to req->dst, because SPU may pad the | |
1131 | * assoc data in the response | |
1132 | */ | |
1133 | memset(rctx->msg_buf.a.resp_aad, 0, assoc_buf_len); | |
1134 | sg_set_buf(sg++, rctx->msg_buf.a.resp_aad, assoc_buf_len); | |
1135 | } | |
1136 | ||
1137 | if (resp_len) { | |
1138 | /* | |
1139 | * Copy in each dst sg entry from request, up to chunksize. | |
1140 | * dst sg catches just the data. digest caught in separate buf. | |
1141 | */ | |
1142 | datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip, | |
1143 | rctx->dst_nents, resp_len); | |
1144 | if (datalen < (resp_len)) { | |
1145 | pr_err("%s(): failed to copy dst sg to mbox msg. expected len %u, datalen %u", | |
1146 | __func__, resp_len, datalen); | |
1147 | return -EFAULT; | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | /* If GCM/CCM data is padded, catch padding in separate buffer */ | |
1152 | if (data_padlen) { | |
1153 | memset(rctx->msg_buf.a.gcmpad, 0, data_padlen); | |
1154 | sg_set_buf(sg++, rctx->msg_buf.a.gcmpad, data_padlen); | |
1155 | } | |
1156 | ||
1157 | /* Always catch ICV in separate buffer */ | |
1158 | sg_set_buf(sg++, rctx->msg_buf.digest, digestsize); | |
1159 | ||
1160 | flow_log("stat_pad_len %u\n", stat_pad_len); | |
1161 | if (stat_pad_len) { | |
1162 | memset(rctx->msg_buf.rx_stat_pad, 0, stat_pad_len); | |
1163 | sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len); | |
1164 | } | |
1165 | ||
1166 | memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN); | |
1167 | sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len()); | |
1168 | ||
1169 | return 0; | |
1170 | } | |
1171 | ||
1172 | /** | |
1173 | * spu_aead_tx_sg_create() - Build up the scatterlist of buffers used to send a | |
1174 | * SPU request message for an AEAD request. Includes SPU message headers and the | |
1175 | * request data. | |
1176 | * @mssg: mailbox message containing the transmit sg | |
1177 | * @rctx: crypto request context | |
1178 | * @tx_frag_num: number of scatterlist elements required to construct the | |
1179 | * SPU request message | |
1180 | * @spu_hdr_len: length of SPU message header in bytes | |
1181 | * @assoc: crypto API associated data scatterlist | |
1182 | * @assoc_len: length of associated data | |
1183 | * @assoc_nents: number of scatterlist entries containing assoc data | |
1184 | * @aead_iv_len: length of AEAD IV, if included | |
1185 | * @chunksize: Number of bytes of request data | |
1186 | * @aad_pad_len: Number of bytes of padding at end of AAD. For GCM/CCM. | |
1187 | * @pad_len: Number of pad bytes | |
1188 | * @incl_icv: If true, write separate ICV buffer after data and | |
1189 | * any padding | |
1190 | * | |
1191 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
1192 | * when the request completes, whether the request is handled successfully or | |
1193 | * there is an error. | |
1194 | * | |
1195 | * Return: | |
1196 | * 0 if successful | |
1197 | * < 0 if an error | |
1198 | */ | |
1199 | static int spu_aead_tx_sg_create(struct brcm_message *mssg, | |
1200 | struct iproc_reqctx_s *rctx, | |
1201 | u8 tx_frag_num, | |
1202 | u32 spu_hdr_len, | |
1203 | struct scatterlist *assoc, | |
1204 | unsigned int assoc_len, | |
1205 | int assoc_nents, | |
1206 | unsigned int aead_iv_len, | |
1207 | unsigned int chunksize, | |
1208 | u32 aad_pad_len, u32 pad_len, bool incl_icv) | |
1209 | { | |
1210 | struct spu_hw *spu = &iproc_priv.spu; | |
1211 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
1212 | struct scatterlist *assoc_sg = assoc; | |
1213 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1214 | u32 datalen; /* Number of bytes of data to write */ | |
1215 | u32 written; /* Number of bytes of data written */ | |
1216 | u32 assoc_offset = 0; | |
1217 | u32 stat_len; | |
1218 | ||
1219 | mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist), | |
1220 | rctx->gfp); | |
1221 | if (!mssg->spu.src) | |
1222 | return -ENOMEM; | |
1223 | ||
1224 | sg = mssg->spu.src; | |
1225 | sg_init_table(sg, tx_frag_num); | |
1226 | ||
1227 | sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr, | |
1228 | BCM_HDR_LEN + spu_hdr_len); | |
1229 | ||
1230 | if (assoc_len) { | |
1231 | /* Copy in each associated data sg entry from request */ | |
1232 | written = spu_msg_sg_add(&sg, &assoc_sg, &assoc_offset, | |
1233 | assoc_nents, assoc_len); | |
1234 | if (written < assoc_len) { | |
1235 | pr_err("%s(): failed to copy assoc sg to mbox msg", | |
1236 | __func__); | |
1237 | return -EFAULT; | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | if (aead_iv_len) | |
1242 | sg_set_buf(sg++, rctx->msg_buf.iv_ctr, aead_iv_len); | |
1243 | ||
1244 | if (aad_pad_len) { | |
1245 | memset(rctx->msg_buf.a.req_aad_pad, 0, aad_pad_len); | |
1246 | sg_set_buf(sg++, rctx->msg_buf.a.req_aad_pad, aad_pad_len); | |
1247 | } | |
1248 | ||
1249 | datalen = chunksize; | |
1250 | if ((chunksize > ctx->digestsize) && incl_icv) | |
1251 | datalen -= ctx->digestsize; | |
1252 | if (datalen) { | |
1253 | /* For aead, a single msg should consume the entire src sg */ | |
1254 | written = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip, | |
1255 | rctx->src_nents, datalen); | |
1256 | if (written < datalen) { | |
1257 | pr_err("%s(): failed to copy src sg to mbox msg", | |
1258 | __func__); | |
1259 | return -EFAULT; | |
1260 | } | |
1261 | } | |
1262 | ||
1263 | if (pad_len) { | |
1264 | memset(rctx->msg_buf.spu_req_pad, 0, pad_len); | |
1265 | sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len); | |
1266 | } | |
1267 | ||
1268 | if (incl_icv) | |
1269 | sg_set_buf(sg++, rctx->msg_buf.digest, ctx->digestsize); | |
1270 | ||
1271 | stat_len = spu->spu_tx_status_len(); | |
1272 | if (stat_len) { | |
1273 | memset(rctx->msg_buf.tx_stat, 0, stat_len); | |
1274 | sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len); | |
1275 | } | |
1276 | return 0; | |
1277 | } | |
1278 | ||
1279 | /** | |
1280 | * handle_aead_req() - Submit a SPU request message for the next chunk of the | |
1281 | * current AEAD request. | |
1282 | * @rctx: Crypto request context | |
1283 | * | |
1284 | * Unlike other operation types, we assume the length of the request fits in | |
1285 | * a single SPU request message. aead_enqueue() makes sure this is true. | |
1286 | * Comments for other op types regarding threads applies here as well. | |
1287 | * | |
1288 | * Unlike incremental hash ops, where the spu returns the entire hash for | |
1289 | * truncated algs like sha-224, the SPU returns just the truncated hash in | |
1290 | * response to aead requests. So digestsize is always ctx->digestsize here. | |
1291 | * | |
1292 | * Return: -EINPROGRESS: crypto request has been accepted and result will be | |
1293 | * returned asynchronously | |
1294 | * Any other value indicates an error | |
1295 | */ | |
1296 | static int handle_aead_req(struct iproc_reqctx_s *rctx) | |
1297 | { | |
1298 | struct spu_hw *spu = &iproc_priv.spu; | |
1299 | struct crypto_async_request *areq = rctx->parent; | |
1300 | struct aead_request *req = container_of(areq, | |
1301 | struct aead_request, base); | |
1302 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1303 | int err; | |
1304 | unsigned int chunksize; | |
1305 | unsigned int resp_len; | |
1306 | u32 spu_hdr_len; | |
1307 | u32 db_size; | |
1308 | u32 stat_pad_len; | |
1309 | u32 pad_len; | |
1310 | struct brcm_message *mssg; /* mailbox message */ | |
1311 | struct spu_request_opts req_opts; | |
1312 | struct spu_cipher_parms cipher_parms; | |
1313 | struct spu_hash_parms hash_parms; | |
1314 | struct spu_aead_parms aead_parms; | |
1315 | int assoc_nents = 0; | |
1316 | bool incl_icv = false; | |
1317 | unsigned int digestsize = ctx->digestsize; | |
9d12ba86 RR |
1318 | |
1319 | /* number of entries in src and dst sg. Always includes SPU msg header. | |
1320 | */ | |
1321 | u8 rx_frag_num = 2; /* and STATUS */ | |
1322 | u8 tx_frag_num = 1; | |
1323 | ||
1324 | /* doing the whole thing at once */ | |
1325 | chunksize = rctx->total_todo; | |
1326 | ||
1327 | flow_log("%s: chunksize %u\n", __func__, chunksize); | |
1328 | ||
1329 | memset(&req_opts, 0, sizeof(req_opts)); | |
1330 | memset(&hash_parms, 0, sizeof(hash_parms)); | |
1331 | memset(&aead_parms, 0, sizeof(aead_parms)); | |
1332 | ||
1333 | req_opts.is_inbound = !(rctx->is_encrypt); | |
1334 | req_opts.auth_first = ctx->auth_first; | |
1335 | req_opts.is_aead = true; | |
1336 | req_opts.is_esp = ctx->is_esp; | |
1337 | ||
1338 | cipher_parms.alg = ctx->cipher.alg; | |
1339 | cipher_parms.mode = ctx->cipher.mode; | |
1340 | cipher_parms.type = ctx->cipher_type; | |
1341 | cipher_parms.key_buf = ctx->enckey; | |
1342 | cipher_parms.key_len = ctx->enckeylen; | |
1343 | cipher_parms.iv_buf = rctx->msg_buf.iv_ctr; | |
1344 | cipher_parms.iv_len = rctx->iv_ctr_len; | |
1345 | ||
1346 | hash_parms.alg = ctx->auth.alg; | |
1347 | hash_parms.mode = ctx->auth.mode; | |
1348 | hash_parms.type = HASH_TYPE_NONE; | |
1349 | hash_parms.key_buf = (u8 *)ctx->authkey; | |
1350 | hash_parms.key_len = ctx->authkeylen; | |
1351 | hash_parms.digestsize = digestsize; | |
1352 | ||
1353 | if ((ctx->auth.alg == HASH_ALG_SHA224) && | |
1354 | (ctx->authkeylen < SHA224_DIGEST_SIZE)) | |
1355 | hash_parms.key_len = SHA224_DIGEST_SIZE; | |
1356 | ||
1357 | aead_parms.assoc_size = req->assoclen; | |
1358 | if (ctx->is_esp && !ctx->is_rfc4543) { | |
1359 | /* | |
1360 | * 8-byte IV is included assoc data in request. SPU2 | |
1361 | * expects AAD to include just SPI and seqno. So | |
1362 | * subtract off the IV len. | |
1363 | */ | |
a59851d2 | 1364 | aead_parms.assoc_size -= GCM_RFC4106_IV_SIZE; |
9d12ba86 RR |
1365 | |
1366 | if (rctx->is_encrypt) { | |
1367 | aead_parms.return_iv = true; | |
a59851d2 | 1368 | aead_parms.ret_iv_len = GCM_RFC4106_IV_SIZE; |
9d12ba86 RR |
1369 | aead_parms.ret_iv_off = GCM_ESP_SALT_SIZE; |
1370 | } | |
1371 | } else { | |
1372 | aead_parms.ret_iv_len = 0; | |
1373 | } | |
1374 | ||
1375 | /* | |
1376 | * Count number of sg entries from the crypto API request that are to | |
1377 | * be included in this mailbox message. For dst sg, don't count space | |
1378 | * for digest. Digest gets caught in a separate buffer and copied back | |
1379 | * to dst sg when processing response. | |
1380 | */ | |
1381 | rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize); | |
1382 | rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize); | |
1383 | if (aead_parms.assoc_size) | |
1384 | assoc_nents = spu_sg_count(rctx->assoc, 0, | |
1385 | aead_parms.assoc_size); | |
1386 | ||
1387 | mssg = &rctx->mb_mssg; | |
1388 | ||
1389 | rctx->total_sent = chunksize; | |
1390 | rctx->src_sent = chunksize; | |
1391 | if (spu->spu_assoc_resp_len(ctx->cipher.mode, | |
1392 | aead_parms.assoc_size, | |
1393 | aead_parms.ret_iv_len, | |
1394 | rctx->is_encrypt)) | |
1395 | rx_frag_num++; | |
1396 | ||
1397 | aead_parms.iv_len = spu->spu_aead_ivlen(ctx->cipher.mode, | |
1398 | rctx->iv_ctr_len); | |
1399 | ||
1400 | if (ctx->auth.alg == HASH_ALG_AES) | |
a2e5d408 | 1401 | hash_parms.type = (enum hash_type)ctx->cipher_type; |
9d12ba86 RR |
1402 | |
1403 | /* General case AAD padding (CCM and RFC4543 special cases below) */ | |
1404 | aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1405 | aead_parms.assoc_size); | |
1406 | ||
1407 | /* General case data padding (CCM decrypt special case below) */ | |
1408 | aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1409 | chunksize); | |
1410 | ||
1411 | if (ctx->cipher.mode == CIPHER_MODE_CCM) { | |
1412 | /* | |
1413 | * for CCM, AAD len + 2 (rather than AAD len) needs to be | |
1414 | * 128-bit aligned | |
1415 | */ | |
1416 | aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len( | |
1417 | ctx->cipher.mode, | |
1418 | aead_parms.assoc_size + 2); | |
1419 | ||
1420 | /* | |
1421 | * And when decrypting CCM, need to pad without including | |
1422 | * size of ICV which is tacked on to end of chunk | |
1423 | */ | |
1424 | if (!rctx->is_encrypt) | |
1425 | aead_parms.data_pad_len = | |
1426 | spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1427 | chunksize - digestsize); | |
1428 | ||
1429 | /* CCM also requires software to rewrite portions of IV: */ | |
1430 | spu->spu_ccm_update_iv(digestsize, &cipher_parms, req->assoclen, | |
1431 | chunksize, rctx->is_encrypt, | |
1432 | ctx->is_esp); | |
1433 | } | |
1434 | ||
1435 | if (ctx->is_rfc4543) { | |
1436 | /* | |
1437 | * RFC4543: data is included in AAD, so don't pad after AAD | |
1438 | * and pad data based on both AAD + data size | |
1439 | */ | |
1440 | aead_parms.aad_pad_len = 0; | |
1441 | if (!rctx->is_encrypt) | |
1442 | aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len( | |
1443 | ctx->cipher.mode, | |
1444 | aead_parms.assoc_size + chunksize - | |
1445 | digestsize); | |
1446 | else | |
1447 | aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len( | |
1448 | ctx->cipher.mode, | |
1449 | aead_parms.assoc_size + chunksize); | |
1450 | ||
1451 | req_opts.is_rfc4543 = true; | |
1452 | } | |
1453 | ||
1454 | if (spu_req_incl_icv(ctx->cipher.mode, rctx->is_encrypt)) { | |
1455 | incl_icv = true; | |
1456 | tx_frag_num++; | |
1457 | /* Copy ICV from end of src scatterlist to digest buf */ | |
1458 | sg_copy_part_to_buf(req->src, rctx->msg_buf.digest, digestsize, | |
1459 | req->assoclen + rctx->total_sent - | |
1460 | digestsize); | |
1461 | } | |
1462 | ||
1463 | atomic64_add(chunksize, &iproc_priv.bytes_out); | |
1464 | ||
1465 | flow_log("%s()-sent chunksize:%u\n", __func__, chunksize); | |
1466 | ||
1467 | /* Prepend SPU header with type 3 BCM header */ | |
1468 | memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN); | |
1469 | ||
1470 | spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr + | |
1471 | BCM_HDR_LEN, &req_opts, | |
1472 | &cipher_parms, &hash_parms, | |
1473 | &aead_parms, chunksize); | |
1474 | ||
1475 | /* Determine total length of padding. Put all padding in one buffer. */ | |
1476 | db_size = spu_real_db_size(aead_parms.assoc_size, aead_parms.iv_len, 0, | |
1477 | chunksize, aead_parms.aad_pad_len, | |
1478 | aead_parms.data_pad_len, 0); | |
1479 | ||
1480 | stat_pad_len = spu->spu_wordalign_padlen(db_size); | |
1481 | ||
1482 | if (stat_pad_len) | |
1483 | rx_frag_num++; | |
1484 | pad_len = aead_parms.data_pad_len + stat_pad_len; | |
1485 | if (pad_len) { | |
1486 | tx_frag_num++; | |
1487 | spu->spu_request_pad(rctx->msg_buf.spu_req_pad, | |
1488 | aead_parms.data_pad_len, 0, | |
1489 | ctx->auth.alg, ctx->auth.mode, | |
1490 | rctx->total_sent, stat_pad_len); | |
1491 | } | |
1492 | ||
1493 | spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
1494 | spu_hdr_len); | |
1495 | dump_sg(rctx->assoc, 0, aead_parms.assoc_size); | |
1496 | packet_dump(" aead iv: ", rctx->msg_buf.iv_ctr, aead_parms.iv_len); | |
1497 | packet_log("BD:\n"); | |
1498 | dump_sg(rctx->src_sg, rctx->src_skip, chunksize); | |
1499 | packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len); | |
1500 | ||
1501 | /* | |
1502 | * Build mailbox message containing SPU request msg and rx buffers | |
1503 | * to catch response message | |
1504 | */ | |
1505 | memset(mssg, 0, sizeof(*mssg)); | |
1506 | mssg->type = BRCM_MESSAGE_SPU; | |
1507 | mssg->ctx = rctx; /* Will be returned in response */ | |
1508 | ||
1509 | /* Create rx scatterlist to catch result */ | |
1510 | rx_frag_num += rctx->dst_nents; | |
1511 | resp_len = chunksize; | |
1512 | ||
1513 | /* | |
1514 | * Always catch ICV in separate buffer. Have to for GCM/CCM because of | |
1515 | * padding. Have to for SHA-224 and other truncated SHAs because SPU | |
1516 | * sends entire digest back. | |
1517 | */ | |
1518 | rx_frag_num++; | |
1519 | ||
1520 | if (((ctx->cipher.mode == CIPHER_MODE_GCM) || | |
1521 | (ctx->cipher.mode == CIPHER_MODE_CCM)) && !rctx->is_encrypt) { | |
1522 | /* | |
1523 | * Input is ciphertxt plus ICV, but ICV not incl | |
1524 | * in output. | |
1525 | */ | |
1526 | resp_len -= ctx->digestsize; | |
1527 | if (resp_len == 0) | |
1528 | /* no rx frags to catch output data */ | |
1529 | rx_frag_num -= rctx->dst_nents; | |
1530 | } | |
1531 | ||
1532 | err = spu_aead_rx_sg_create(mssg, req, rctx, rx_frag_num, | |
1533 | aead_parms.assoc_size, | |
1534 | aead_parms.ret_iv_len, resp_len, digestsize, | |
1535 | stat_pad_len); | |
1536 | if (err) | |
1537 | return err; | |
1538 | ||
1539 | /* Create tx scatterlist containing SPU request message */ | |
1540 | tx_frag_num += rctx->src_nents; | |
1541 | tx_frag_num += assoc_nents; | |
1542 | if (aead_parms.aad_pad_len) | |
1543 | tx_frag_num++; | |
1544 | if (aead_parms.iv_len) | |
1545 | tx_frag_num++; | |
1546 | if (spu->spu_tx_status_len()) | |
1547 | tx_frag_num++; | |
1548 | err = spu_aead_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len, | |
1549 | rctx->assoc, aead_parms.assoc_size, | |
1550 | assoc_nents, aead_parms.iv_len, chunksize, | |
1551 | aead_parms.aad_pad_len, pad_len, incl_icv); | |
1552 | if (err) | |
1553 | return err; | |
1554 | ||
f0e2ce58 | 1555 | err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx); |
1556 | if (unlikely(err < 0)) | |
9d12ba86 | 1557 | return err; |
9d12ba86 RR |
1558 | |
1559 | return -EINPROGRESS; | |
1560 | } | |
1561 | ||
1562 | /** | |
1563 | * handle_aead_resp() - Process a SPU response message for an AEAD request. | |
1564 | * @rctx: Crypto request context | |
1565 | */ | |
1566 | static void handle_aead_resp(struct iproc_reqctx_s *rctx) | |
1567 | { | |
1568 | struct spu_hw *spu = &iproc_priv.spu; | |
1569 | struct crypto_async_request *areq = rctx->parent; | |
1570 | struct aead_request *req = container_of(areq, | |
1571 | struct aead_request, base); | |
1572 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1573 | u32 payload_len; | |
1574 | unsigned int icv_offset; | |
1575 | u32 result_len; | |
1576 | ||
1577 | /* See how much data was returned */ | |
1578 | payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr); | |
1579 | flow_log("payload_len %u\n", payload_len); | |
1580 | ||
1581 | /* only count payload */ | |
1582 | atomic64_add(payload_len, &iproc_priv.bytes_in); | |
1583 | ||
1584 | if (req->assoclen) | |
1585 | packet_dump(" assoc_data ", rctx->msg_buf.a.resp_aad, | |
1586 | req->assoclen); | |
1587 | ||
1588 | /* | |
1589 | * Copy the ICV back to the destination | |
1590 | * buffer. In decrypt case, SPU gives us back the digest, but crypto | |
1591 | * API doesn't expect ICV in dst buffer. | |
1592 | */ | |
1593 | result_len = req->cryptlen; | |
1594 | if (rctx->is_encrypt) { | |
1595 | icv_offset = req->assoclen + rctx->total_sent; | |
1596 | packet_dump(" ICV: ", rctx->msg_buf.digest, ctx->digestsize); | |
1597 | flow_log("copying ICV to dst sg at offset %u\n", icv_offset); | |
1598 | sg_copy_part_from_buf(req->dst, rctx->msg_buf.digest, | |
1599 | ctx->digestsize, icv_offset); | |
1600 | result_len += ctx->digestsize; | |
1601 | } | |
1602 | ||
1603 | packet_log("response data: "); | |
1604 | dump_sg(req->dst, req->assoclen, result_len); | |
1605 | ||
1606 | atomic_inc(&iproc_priv.op_counts[SPU_OP_AEAD]); | |
1607 | if (ctx->cipher.alg == CIPHER_ALG_AES) { | |
1608 | if (ctx->cipher.mode == CIPHER_MODE_CCM) | |
1609 | atomic_inc(&iproc_priv.aead_cnt[AES_CCM]); | |
1610 | else if (ctx->cipher.mode == CIPHER_MODE_GCM) | |
1611 | atomic_inc(&iproc_priv.aead_cnt[AES_GCM]); | |
1612 | else | |
1613 | atomic_inc(&iproc_priv.aead_cnt[AUTHENC]); | |
1614 | } else { | |
1615 | atomic_inc(&iproc_priv.aead_cnt[AUTHENC]); | |
1616 | } | |
1617 | } | |
1618 | ||
1619 | /** | |
1620 | * spu_chunk_cleanup() - Do cleanup after processing one chunk of a request | |
1621 | * @rctx: request context | |
1622 | * | |
1623 | * Mailbox scatterlists are allocated for each chunk. So free them after | |
1624 | * processing each chunk. | |
1625 | */ | |
1626 | static void spu_chunk_cleanup(struct iproc_reqctx_s *rctx) | |
1627 | { | |
1628 | /* mailbox message used to tx request */ | |
1629 | struct brcm_message *mssg = &rctx->mb_mssg; | |
1630 | ||
1631 | kfree(mssg->spu.src); | |
1632 | kfree(mssg->spu.dst); | |
1633 | memset(mssg, 0, sizeof(struct brcm_message)); | |
1634 | } | |
1635 | ||
1636 | /** | |
1637 | * finish_req() - Used to invoke the complete callback from the requester when | |
1638 | * a request has been handled asynchronously. | |
1639 | * @rctx: Request context | |
1640 | * @err: Indicates whether the request was successful or not | |
1641 | * | |
1642 | * Ensures that cleanup has been done for request | |
1643 | */ | |
1644 | static void finish_req(struct iproc_reqctx_s *rctx, int err) | |
1645 | { | |
1646 | struct crypto_async_request *areq = rctx->parent; | |
1647 | ||
1648 | flow_log("%s() err:%d\n\n", __func__, err); | |
1649 | ||
1650 | /* No harm done if already called */ | |
1651 | spu_chunk_cleanup(rctx); | |
1652 | ||
1653 | if (areq) | |
1654 | areq->complete(areq, err); | |
1655 | } | |
1656 | ||
1657 | /** | |
1658 | * spu_rx_callback() - Callback from mailbox framework with a SPU response. | |
1659 | * @cl: mailbox client structure for SPU driver | |
1660 | * @msg: mailbox message containing SPU response | |
1661 | */ | |
1662 | static void spu_rx_callback(struct mbox_client *cl, void *msg) | |
1663 | { | |
1664 | struct spu_hw *spu = &iproc_priv.spu; | |
1665 | struct brcm_message *mssg = msg; | |
1666 | struct iproc_reqctx_s *rctx; | |
9d12ba86 RR |
1667 | int err = 0; |
1668 | ||
1669 | rctx = mssg->ctx; | |
1670 | if (unlikely(!rctx)) { | |
1671 | /* This is fatal */ | |
1672 | pr_err("%s(): no request context", __func__); | |
1673 | err = -EFAULT; | |
1674 | goto cb_finish; | |
1675 | } | |
9d12ba86 RR |
1676 | |
1677 | /* process the SPU status */ | |
1678 | err = spu->spu_status_process(rctx->msg_buf.rx_stat); | |
1679 | if (err != 0) { | |
1680 | if (err == SPU_INVALID_ICV) | |
1681 | atomic_inc(&iproc_priv.bad_icv); | |
1682 | err = -EBADMSG; | |
1683 | goto cb_finish; | |
1684 | } | |
1685 | ||
1686 | /* Process the SPU response message */ | |
1687 | switch (rctx->ctx->alg->type) { | |
a9c01cd6 AB |
1688 | case CRYPTO_ALG_TYPE_SKCIPHER: |
1689 | handle_skcipher_resp(rctx); | |
9d12ba86 RR |
1690 | break; |
1691 | case CRYPTO_ALG_TYPE_AHASH: | |
1692 | handle_ahash_resp(rctx); | |
1693 | break; | |
1694 | case CRYPTO_ALG_TYPE_AEAD: | |
1695 | handle_aead_resp(rctx); | |
1696 | break; | |
1697 | default: | |
1698 | err = -EINVAL; | |
1699 | goto cb_finish; | |
1700 | } | |
1701 | ||
1702 | /* | |
1703 | * If this response does not complete the request, then send the next | |
1704 | * request chunk. | |
1705 | */ | |
1706 | if (rctx->total_sent < rctx->total_todo) { | |
1707 | /* Deallocate anything specific to previous chunk */ | |
1708 | spu_chunk_cleanup(rctx); | |
1709 | ||
1710 | switch (rctx->ctx->alg->type) { | |
a9c01cd6 AB |
1711 | case CRYPTO_ALG_TYPE_SKCIPHER: |
1712 | err = handle_skcipher_req(rctx); | |
9d12ba86 RR |
1713 | break; |
1714 | case CRYPTO_ALG_TYPE_AHASH: | |
1715 | err = handle_ahash_req(rctx); | |
1716 | if (err == -EAGAIN) | |
1717 | /* | |
1718 | * we saved data in hash carry, but tell crypto | |
1719 | * API we successfully completed request. | |
1720 | */ | |
1721 | err = 0; | |
1722 | break; | |
1723 | case CRYPTO_ALG_TYPE_AEAD: | |
1724 | err = handle_aead_req(rctx); | |
1725 | break; | |
1726 | default: | |
1727 | err = -EINVAL; | |
1728 | } | |
1729 | ||
1730 | if (err == -EINPROGRESS) | |
1731 | /* Successfully submitted request for next chunk */ | |
1732 | return; | |
1733 | } | |
1734 | ||
1735 | cb_finish: | |
1736 | finish_req(rctx, err); | |
1737 | } | |
1738 | ||
1739 | /* ==================== Kernel Cryptographic API ==================== */ | |
1740 | ||
1741 | /** | |
a9c01cd6 | 1742 | * skcipher_enqueue() - Handle skcipher encrypt or decrypt request. |
9d12ba86 RR |
1743 | * @req: Crypto API request |
1744 | * @encrypt: true if encrypting; false if decrypting | |
1745 | * | |
1746 | * Return: -EINPROGRESS if request accepted and result will be returned | |
1747 | * asynchronously | |
1748 | * < 0 if an error | |
1749 | */ | |
a9c01cd6 | 1750 | static int skcipher_enqueue(struct skcipher_request *req, bool encrypt) |
9d12ba86 | 1751 | { |
a9c01cd6 | 1752 | struct iproc_reqctx_s *rctx = skcipher_request_ctx(req); |
9d12ba86 | 1753 | struct iproc_ctx_s *ctx = |
a9c01cd6 | 1754 | crypto_skcipher_ctx(crypto_skcipher_reqtfm(req)); |
9d12ba86 RR |
1755 | int err; |
1756 | ||
1757 | flow_log("%s() enc:%u\n", __func__, encrypt); | |
1758 | ||
1759 | rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
1760 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
1761 | rctx->parent = &req->base; | |
1762 | rctx->is_encrypt = encrypt; | |
1763 | rctx->bd_suppress = false; | |
a9c01cd6 | 1764 | rctx->total_todo = req->cryptlen; |
9d12ba86 RR |
1765 | rctx->src_sent = 0; |
1766 | rctx->total_sent = 0; | |
1767 | rctx->total_received = 0; | |
1768 | rctx->ctx = ctx; | |
1769 | ||
1770 | /* Initialize current position in src and dst scatterlists */ | |
1771 | rctx->src_sg = req->src; | |
1772 | rctx->src_nents = 0; | |
1773 | rctx->src_skip = 0; | |
1774 | rctx->dst_sg = req->dst; | |
1775 | rctx->dst_nents = 0; | |
1776 | rctx->dst_skip = 0; | |
1777 | ||
1778 | if (ctx->cipher.mode == CIPHER_MODE_CBC || | |
1779 | ctx->cipher.mode == CIPHER_MODE_CTR || | |
1780 | ctx->cipher.mode == CIPHER_MODE_OFB || | |
1781 | ctx->cipher.mode == CIPHER_MODE_XTS || | |
1782 | ctx->cipher.mode == CIPHER_MODE_GCM || | |
1783 | ctx->cipher.mode == CIPHER_MODE_CCM) { | |
1784 | rctx->iv_ctr_len = | |
a9c01cd6 AB |
1785 | crypto_skcipher_ivsize(crypto_skcipher_reqtfm(req)); |
1786 | memcpy(rctx->msg_buf.iv_ctr, req->iv, rctx->iv_ctr_len); | |
9d12ba86 RR |
1787 | } else { |
1788 | rctx->iv_ctr_len = 0; | |
1789 | } | |
1790 | ||
1791 | /* Choose a SPU to process this request */ | |
1792 | rctx->chan_idx = select_channel(); | |
a9c01cd6 | 1793 | err = handle_skcipher_req(rctx); |
9d12ba86 RR |
1794 | if (err != -EINPROGRESS) |
1795 | /* synchronous result */ | |
1796 | spu_chunk_cleanup(rctx); | |
1797 | ||
1798 | return err; | |
1799 | } | |
1800 | ||
a9c01cd6 | 1801 | static int des_setkey(struct crypto_skcipher *cipher, const u8 *key, |
9d12ba86 RR |
1802 | unsigned int keylen) |
1803 | { | |
a9c01cd6 | 1804 | struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher); |
05a7238d | 1805 | int err; |
9d12ba86 | 1806 | |
a9c01cd6 | 1807 | err = verify_skcipher_des_key(cipher, key); |
05a7238d AB |
1808 | if (err) |
1809 | return err; | |
9d12ba86 | 1810 | |
05a7238d | 1811 | ctx->cipher_type = CIPHER_TYPE_DES; |
9d12ba86 RR |
1812 | return 0; |
1813 | } | |
1814 | ||
a9c01cd6 | 1815 | static int threedes_setkey(struct crypto_skcipher *cipher, const u8 *key, |
9d12ba86 RR |
1816 | unsigned int keylen) |
1817 | { | |
a9c01cd6 | 1818 | struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher); |
05a7238d | 1819 | int err; |
9d12ba86 | 1820 | |
a9c01cd6 | 1821 | err = verify_skcipher_des3_key(cipher, key); |
05a7238d AB |
1822 | if (err) |
1823 | return err; | |
9d12ba86 | 1824 | |
05a7238d | 1825 | ctx->cipher_type = CIPHER_TYPE_3DES; |
9d12ba86 RR |
1826 | return 0; |
1827 | } | |
1828 | ||
a9c01cd6 | 1829 | static int aes_setkey(struct crypto_skcipher *cipher, const u8 *key, |
9d12ba86 RR |
1830 | unsigned int keylen) |
1831 | { | |
a9c01cd6 | 1832 | struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher); |
9d12ba86 RR |
1833 | |
1834 | if (ctx->cipher.mode == CIPHER_MODE_XTS) | |
1835 | /* XTS includes two keys of equal length */ | |
1836 | keylen = keylen / 2; | |
1837 | ||
1838 | switch (keylen) { | |
1839 | case AES_KEYSIZE_128: | |
1840 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
1841 | break; | |
1842 | case AES_KEYSIZE_192: | |
1843 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
1844 | break; | |
1845 | case AES_KEYSIZE_256: | |
1846 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
1847 | break; | |
1848 | default: | |
9d12ba86 RR |
1849 | return -EINVAL; |
1850 | } | |
1851 | WARN_ON((ctx->max_payload != SPU_MAX_PAYLOAD_INF) && | |
1852 | ((ctx->max_payload % AES_BLOCK_SIZE) != 0)); | |
1853 | return 0; | |
1854 | } | |
1855 | ||
a9c01cd6 | 1856 | static int rc4_setkey(struct crypto_skcipher *cipher, const u8 *key, |
9d12ba86 RR |
1857 | unsigned int keylen) |
1858 | { | |
a9c01cd6 | 1859 | struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher); |
9d12ba86 RR |
1860 | int i; |
1861 | ||
1862 | ctx->enckeylen = ARC4_MAX_KEY_SIZE + ARC4_STATE_SIZE; | |
1863 | ||
1864 | ctx->enckey[0] = 0x00; /* 0x00 */ | |
1865 | ctx->enckey[1] = 0x00; /* i */ | |
1866 | ctx->enckey[2] = 0x00; /* 0x00 */ | |
1867 | ctx->enckey[3] = 0x00; /* j */ | |
1868 | for (i = 0; i < ARC4_MAX_KEY_SIZE; i++) | |
1869 | ctx->enckey[i + ARC4_STATE_SIZE] = key[i % keylen]; | |
1870 | ||
1871 | ctx->cipher_type = CIPHER_TYPE_INIT; | |
1872 | ||
1873 | return 0; | |
1874 | } | |
1875 | ||
a9c01cd6 | 1876 | static int skcipher_setkey(struct crypto_skcipher *cipher, const u8 *key, |
9d12ba86 RR |
1877 | unsigned int keylen) |
1878 | { | |
1879 | struct spu_hw *spu = &iproc_priv.spu; | |
a9c01cd6 | 1880 | struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher); |
9d12ba86 RR |
1881 | struct spu_cipher_parms cipher_parms; |
1882 | u32 alloc_len = 0; | |
1883 | int err; | |
1884 | ||
a9c01cd6 | 1885 | flow_log("skcipher_setkey() keylen: %d\n", keylen); |
9d12ba86 RR |
1886 | flow_dump(" key: ", key, keylen); |
1887 | ||
1888 | switch (ctx->cipher.alg) { | |
1889 | case CIPHER_ALG_DES: | |
1890 | err = des_setkey(cipher, key, keylen); | |
1891 | break; | |
1892 | case CIPHER_ALG_3DES: | |
1893 | err = threedes_setkey(cipher, key, keylen); | |
1894 | break; | |
1895 | case CIPHER_ALG_AES: | |
1896 | err = aes_setkey(cipher, key, keylen); | |
1897 | break; | |
1898 | case CIPHER_ALG_RC4: | |
1899 | err = rc4_setkey(cipher, key, keylen); | |
1900 | break; | |
1901 | default: | |
1902 | pr_err("%s() Error: unknown cipher alg\n", __func__); | |
1903 | err = -EINVAL; | |
1904 | } | |
1905 | if (err) | |
1906 | return err; | |
1907 | ||
1908 | /* RC4 already populated ctx->enkey */ | |
1909 | if (ctx->cipher.alg != CIPHER_ALG_RC4) { | |
1910 | memcpy(ctx->enckey, key, keylen); | |
1911 | ctx->enckeylen = keylen; | |
1912 | } | |
1913 | /* SPU needs XTS keys in the reverse order the crypto API presents */ | |
1914 | if ((ctx->cipher.alg == CIPHER_ALG_AES) && | |
1915 | (ctx->cipher.mode == CIPHER_MODE_XTS)) { | |
1916 | unsigned int xts_keylen = keylen / 2; | |
1917 | ||
1918 | memcpy(ctx->enckey, key + xts_keylen, xts_keylen); | |
1919 | memcpy(ctx->enckey + xts_keylen, key, xts_keylen); | |
1920 | } | |
1921 | ||
1922 | if (spu->spu_type == SPU_TYPE_SPUM) | |
1923 | alloc_len = BCM_HDR_LEN + SPU_HEADER_ALLOC_LEN; | |
1924 | else if (spu->spu_type == SPU_TYPE_SPU2) | |
1925 | alloc_len = BCM_HDR_LEN + SPU2_HEADER_ALLOC_LEN; | |
1926 | memset(ctx->bcm_spu_req_hdr, 0, alloc_len); | |
1927 | cipher_parms.iv_buf = NULL; | |
a9c01cd6 | 1928 | cipher_parms.iv_len = crypto_skcipher_ivsize(cipher); |
9d12ba86 RR |
1929 | flow_log("%s: iv_len %u\n", __func__, cipher_parms.iv_len); |
1930 | ||
1931 | cipher_parms.alg = ctx->cipher.alg; | |
1932 | cipher_parms.mode = ctx->cipher.mode; | |
1933 | cipher_parms.type = ctx->cipher_type; | |
1934 | cipher_parms.key_buf = ctx->enckey; | |
1935 | cipher_parms.key_len = ctx->enckeylen; | |
1936 | ||
1937 | /* Prepend SPU request message with BCM header */ | |
1938 | memcpy(ctx->bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN); | |
1939 | ctx->spu_req_hdr_len = | |
1940 | spu->spu_cipher_req_init(ctx->bcm_spu_req_hdr + BCM_HDR_LEN, | |
1941 | &cipher_parms); | |
1942 | ||
1943 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, | |
1944 | ctx->enckeylen, | |
1945 | false); | |
1946 | ||
1947 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_CIPHER]); | |
1948 | ||
1949 | return 0; | |
1950 | } | |
1951 | ||
a9c01cd6 | 1952 | static int skcipher_encrypt(struct skcipher_request *req) |
9d12ba86 | 1953 | { |
a9c01cd6 | 1954 | flow_log("skcipher_encrypt() nbytes:%u\n", req->cryptlen); |
9d12ba86 | 1955 | |
a9c01cd6 | 1956 | return skcipher_enqueue(req, true); |
9d12ba86 RR |
1957 | } |
1958 | ||
a9c01cd6 | 1959 | static int skcipher_decrypt(struct skcipher_request *req) |
9d12ba86 | 1960 | { |
a9c01cd6 AB |
1961 | flow_log("skcipher_decrypt() nbytes:%u\n", req->cryptlen); |
1962 | return skcipher_enqueue(req, false); | |
9d12ba86 RR |
1963 | } |
1964 | ||
1965 | static int ahash_enqueue(struct ahash_request *req) | |
1966 | { | |
1967 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
1968 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
1969 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
1970 | int err = 0; | |
1971 | const char *alg_name; | |
1972 | ||
1973 | flow_log("ahash_enqueue() nbytes:%u\n", req->nbytes); | |
1974 | ||
1975 | rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
1976 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
1977 | rctx->parent = &req->base; | |
1978 | rctx->ctx = ctx; | |
1979 | rctx->bd_suppress = true; | |
1980 | memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message)); | |
1981 | ||
1982 | /* Initialize position in src scatterlist */ | |
1983 | rctx->src_sg = req->src; | |
1984 | rctx->src_skip = 0; | |
1985 | rctx->src_nents = 0; | |
1986 | rctx->dst_sg = NULL; | |
1987 | rctx->dst_skip = 0; | |
1988 | rctx->dst_nents = 0; | |
1989 | ||
1990 | /* SPU2 hardware does not compute hash of zero length data */ | |
1991 | if ((rctx->is_final == 1) && (rctx->total_todo == 0) && | |
1992 | (iproc_priv.spu.spu_type == SPU_TYPE_SPU2)) { | |
1993 | alg_name = crypto_tfm_alg_name(crypto_ahash_tfm(tfm)); | |
1994 | flow_log("Doing %sfinal %s zero-len hash request in software\n", | |
1995 | rctx->is_final ? "" : "non-", alg_name); | |
1996 | err = do_shash((unsigned char *)alg_name, req->result, | |
1997 | NULL, 0, NULL, 0, ctx->authkey, | |
1998 | ctx->authkeylen); | |
1999 | if (err < 0) | |
2000 | flow_log("Hash request failed with error %d\n", err); | |
2001 | return err; | |
2002 | } | |
2003 | /* Choose a SPU to process this request */ | |
2004 | rctx->chan_idx = select_channel(); | |
2005 | ||
2006 | err = handle_ahash_req(rctx); | |
2007 | if (err != -EINPROGRESS) | |
2008 | /* synchronous result */ | |
2009 | spu_chunk_cleanup(rctx); | |
2010 | ||
2011 | if (err == -EAGAIN) | |
2012 | /* | |
2013 | * we saved data in hash carry, but tell crypto API | |
2014 | * we successfully completed request. | |
2015 | */ | |
2016 | err = 0; | |
2017 | ||
2018 | return err; | |
2019 | } | |
2020 | ||
2021 | static int __ahash_init(struct ahash_request *req) | |
2022 | { | |
2023 | struct spu_hw *spu = &iproc_priv.spu; | |
2024 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2025 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2026 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2027 | ||
2028 | flow_log("%s()\n", __func__); | |
2029 | ||
2030 | /* Initialize the context */ | |
2031 | rctx->hash_carry_len = 0; | |
2032 | rctx->is_final = 0; | |
2033 | ||
2034 | rctx->total_todo = 0; | |
2035 | rctx->src_sent = 0; | |
2036 | rctx->total_sent = 0; | |
2037 | rctx->total_received = 0; | |
2038 | ||
2039 | ctx->digestsize = crypto_ahash_digestsize(tfm); | |
2040 | /* If we add a hash whose digest is larger, catch it here. */ | |
2041 | WARN_ON(ctx->digestsize > MAX_DIGEST_SIZE); | |
2042 | ||
2043 | rctx->is_sw_hmac = false; | |
2044 | ||
2045 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, 0, | |
2046 | true); | |
2047 | ||
2048 | return 0; | |
2049 | } | |
2050 | ||
2051 | /** | |
2052 | * spu_no_incr_hash() - Determine whether incremental hashing is supported. | |
2053 | * @ctx: Crypto session context | |
2054 | * | |
2055 | * SPU-2 does not support incremental hashing (we'll have to revisit and | |
2056 | * condition based on chip revision or device tree entry if future versions do | |
2057 | * support incremental hash) | |
2058 | * | |
2059 | * SPU-M also doesn't support incremental hashing of AES-XCBC | |
2060 | * | |
2061 | * Return: true if incremental hashing is not supported | |
2062 | * false otherwise | |
2063 | */ | |
dd508618 | 2064 | static bool spu_no_incr_hash(struct iproc_ctx_s *ctx) |
9d12ba86 RR |
2065 | { |
2066 | struct spu_hw *spu = &iproc_priv.spu; | |
2067 | ||
2068 | if (spu->spu_type == SPU_TYPE_SPU2) | |
2069 | return true; | |
2070 | ||
2071 | if ((ctx->auth.alg == HASH_ALG_AES) && | |
2072 | (ctx->auth.mode == HASH_MODE_XCBC)) | |
2073 | return true; | |
2074 | ||
2075 | /* Otherwise, incremental hashing is supported */ | |
2076 | return false; | |
2077 | } | |
2078 | ||
2079 | static int ahash_init(struct ahash_request *req) | |
2080 | { | |
2081 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2082 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2083 | const char *alg_name; | |
2084 | struct crypto_shash *hash; | |
2085 | int ret; | |
2086 | gfp_t gfp; | |
2087 | ||
2088 | if (spu_no_incr_hash(ctx)) { | |
2089 | /* | |
2090 | * If we get an incremental hashing request and it's not | |
2091 | * supported by the hardware, we need to handle it in software | |
2092 | * by calling synchronous hash functions. | |
2093 | */ | |
2094 | alg_name = crypto_tfm_alg_name(crypto_ahash_tfm(tfm)); | |
2095 | hash = crypto_alloc_shash(alg_name, 0, 0); | |
2096 | if (IS_ERR(hash)) { | |
2097 | ret = PTR_ERR(hash); | |
2098 | goto err; | |
2099 | } | |
2100 | ||
2101 | gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2102 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2103 | ctx->shash = kmalloc(sizeof(*ctx->shash) + | |
2104 | crypto_shash_descsize(hash), gfp); | |
2105 | if (!ctx->shash) { | |
2106 | ret = -ENOMEM; | |
2107 | goto err_hash; | |
2108 | } | |
2109 | ctx->shash->tfm = hash; | |
9d12ba86 RR |
2110 | |
2111 | /* Set the key using data we already have from setkey */ | |
2112 | if (ctx->authkeylen > 0) { | |
2113 | ret = crypto_shash_setkey(hash, ctx->authkey, | |
2114 | ctx->authkeylen); | |
2115 | if (ret) | |
2116 | goto err_shash; | |
2117 | } | |
2118 | ||
2119 | /* Initialize hash w/ this key and other params */ | |
2120 | ret = crypto_shash_init(ctx->shash); | |
2121 | if (ret) | |
2122 | goto err_shash; | |
2123 | } else { | |
2124 | /* Otherwise call the internal function which uses SPU hw */ | |
2125 | ret = __ahash_init(req); | |
2126 | } | |
2127 | ||
2128 | return ret; | |
2129 | ||
2130 | err_shash: | |
2131 | kfree(ctx->shash); | |
2132 | err_hash: | |
2133 | crypto_free_shash(hash); | |
2134 | err: | |
2135 | return ret; | |
2136 | } | |
2137 | ||
2138 | static int __ahash_update(struct ahash_request *req) | |
2139 | { | |
2140 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2141 | ||
2142 | flow_log("ahash_update() nbytes:%u\n", req->nbytes); | |
2143 | ||
2144 | if (!req->nbytes) | |
2145 | return 0; | |
2146 | rctx->total_todo += req->nbytes; | |
2147 | rctx->src_sent = 0; | |
2148 | ||
2149 | return ahash_enqueue(req); | |
2150 | } | |
2151 | ||
2152 | static int ahash_update(struct ahash_request *req) | |
2153 | { | |
2154 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2155 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2156 | u8 *tmpbuf; | |
2157 | int ret; | |
2158 | int nents; | |
2159 | gfp_t gfp; | |
2160 | ||
2161 | if (spu_no_incr_hash(ctx)) { | |
2162 | /* | |
2163 | * If we get an incremental hashing request and it's not | |
2164 | * supported by the hardware, we need to handle it in software | |
2165 | * by calling synchronous hash functions. | |
2166 | */ | |
2167 | if (req->src) | |
2168 | nents = sg_nents(req->src); | |
2169 | else | |
2170 | return -EINVAL; | |
2171 | ||
2172 | /* Copy data from req scatterlist to tmp buffer */ | |
2173 | gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2174 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2175 | tmpbuf = kmalloc(req->nbytes, gfp); | |
2176 | if (!tmpbuf) | |
2177 | return -ENOMEM; | |
2178 | ||
2179 | if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) != | |
2180 | req->nbytes) { | |
2181 | kfree(tmpbuf); | |
2182 | return -EINVAL; | |
2183 | } | |
2184 | ||
2185 | /* Call synchronous update */ | |
2186 | ret = crypto_shash_update(ctx->shash, tmpbuf, req->nbytes); | |
2187 | kfree(tmpbuf); | |
2188 | } else { | |
2189 | /* Otherwise call the internal function which uses SPU hw */ | |
2190 | ret = __ahash_update(req); | |
2191 | } | |
2192 | ||
2193 | return ret; | |
2194 | } | |
2195 | ||
2196 | static int __ahash_final(struct ahash_request *req) | |
2197 | { | |
2198 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2199 | ||
2200 | flow_log("ahash_final() nbytes:%u\n", req->nbytes); | |
2201 | ||
2202 | rctx->is_final = 1; | |
2203 | ||
2204 | return ahash_enqueue(req); | |
2205 | } | |
2206 | ||
2207 | static int ahash_final(struct ahash_request *req) | |
2208 | { | |
2209 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2210 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2211 | int ret; | |
2212 | ||
2213 | if (spu_no_incr_hash(ctx)) { | |
2214 | /* | |
2215 | * If we get an incremental hashing request and it's not | |
2216 | * supported by the hardware, we need to handle it in software | |
2217 | * by calling synchronous hash functions. | |
2218 | */ | |
2219 | ret = crypto_shash_final(ctx->shash, req->result); | |
2220 | ||
2221 | /* Done with hash, can deallocate it now */ | |
2222 | crypto_free_shash(ctx->shash->tfm); | |
2223 | kfree(ctx->shash); | |
2224 | ||
2225 | } else { | |
2226 | /* Otherwise call the internal function which uses SPU hw */ | |
2227 | ret = __ahash_final(req); | |
2228 | } | |
2229 | ||
2230 | return ret; | |
2231 | } | |
2232 | ||
2233 | static int __ahash_finup(struct ahash_request *req) | |
2234 | { | |
2235 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2236 | ||
2237 | flow_log("ahash_finup() nbytes:%u\n", req->nbytes); | |
2238 | ||
2239 | rctx->total_todo += req->nbytes; | |
2240 | rctx->src_sent = 0; | |
2241 | rctx->is_final = 1; | |
2242 | ||
2243 | return ahash_enqueue(req); | |
2244 | } | |
2245 | ||
2246 | static int ahash_finup(struct ahash_request *req) | |
2247 | { | |
2248 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2249 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2250 | u8 *tmpbuf; | |
2251 | int ret; | |
2252 | int nents; | |
2253 | gfp_t gfp; | |
2254 | ||
2255 | if (spu_no_incr_hash(ctx)) { | |
2256 | /* | |
2257 | * If we get an incremental hashing request and it's not | |
2258 | * supported by the hardware, we need to handle it in software | |
2259 | * by calling synchronous hash functions. | |
2260 | */ | |
2261 | if (req->src) { | |
2262 | nents = sg_nents(req->src); | |
2263 | } else { | |
2264 | ret = -EINVAL; | |
2265 | goto ahash_finup_exit; | |
2266 | } | |
2267 | ||
2268 | /* Copy data from req scatterlist to tmp buffer */ | |
2269 | gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2270 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2271 | tmpbuf = kmalloc(req->nbytes, gfp); | |
2272 | if (!tmpbuf) { | |
2273 | ret = -ENOMEM; | |
2274 | goto ahash_finup_exit; | |
2275 | } | |
2276 | ||
2277 | if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) != | |
2278 | req->nbytes) { | |
2279 | ret = -EINVAL; | |
2280 | goto ahash_finup_free; | |
2281 | } | |
2282 | ||
2283 | /* Call synchronous update */ | |
2284 | ret = crypto_shash_finup(ctx->shash, tmpbuf, req->nbytes, | |
2285 | req->result); | |
9d12ba86 RR |
2286 | } else { |
2287 | /* Otherwise call the internal function which uses SPU hw */ | |
2288 | return __ahash_finup(req); | |
2289 | } | |
2290 | ahash_finup_free: | |
2291 | kfree(tmpbuf); | |
2292 | ||
2293 | ahash_finup_exit: | |
2294 | /* Done with hash, can deallocate it now */ | |
2295 | crypto_free_shash(ctx->shash->tfm); | |
2296 | kfree(ctx->shash); | |
2297 | return ret; | |
2298 | } | |
2299 | ||
2300 | static int ahash_digest(struct ahash_request *req) | |
2301 | { | |
2302 | int err = 0; | |
2303 | ||
2304 | flow_log("ahash_digest() nbytes:%u\n", req->nbytes); | |
2305 | ||
2306 | /* whole thing at once */ | |
2307 | err = __ahash_init(req); | |
2308 | if (!err) | |
2309 | err = __ahash_finup(req); | |
2310 | ||
2311 | return err; | |
2312 | } | |
2313 | ||
2314 | static int ahash_setkey(struct crypto_ahash *ahash, const u8 *key, | |
2315 | unsigned int keylen) | |
2316 | { | |
2317 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash); | |
2318 | ||
2319 | flow_log("%s() ahash:%p key:%p keylen:%u\n", | |
2320 | __func__, ahash, key, keylen); | |
2321 | flow_dump(" key: ", key, keylen); | |
2322 | ||
2323 | if (ctx->auth.alg == HASH_ALG_AES) { | |
2324 | switch (keylen) { | |
2325 | case AES_KEYSIZE_128: | |
2326 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
2327 | break; | |
2328 | case AES_KEYSIZE_192: | |
2329 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
2330 | break; | |
2331 | case AES_KEYSIZE_256: | |
2332 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
2333 | break; | |
2334 | default: | |
2335 | pr_err("%s() Error: Invalid key length\n", __func__); | |
2336 | return -EINVAL; | |
2337 | } | |
2338 | } else { | |
2339 | pr_err("%s() Error: unknown hash alg\n", __func__); | |
2340 | return -EINVAL; | |
2341 | } | |
2342 | memcpy(ctx->authkey, key, keylen); | |
2343 | ctx->authkeylen = keylen; | |
2344 | ||
2345 | return 0; | |
2346 | } | |
2347 | ||
2348 | static int ahash_export(struct ahash_request *req, void *out) | |
2349 | { | |
2350 | const struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2351 | struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)out; | |
2352 | ||
2353 | spu_exp->total_todo = rctx->total_todo; | |
2354 | spu_exp->total_sent = rctx->total_sent; | |
2355 | spu_exp->is_sw_hmac = rctx->is_sw_hmac; | |
2356 | memcpy(spu_exp->hash_carry, rctx->hash_carry, sizeof(rctx->hash_carry)); | |
2357 | spu_exp->hash_carry_len = rctx->hash_carry_len; | |
2358 | memcpy(spu_exp->incr_hash, rctx->incr_hash, sizeof(rctx->incr_hash)); | |
2359 | ||
2360 | return 0; | |
2361 | } | |
2362 | ||
2363 | static int ahash_import(struct ahash_request *req, const void *in) | |
2364 | { | |
2365 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2366 | struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)in; | |
2367 | ||
2368 | rctx->total_todo = spu_exp->total_todo; | |
2369 | rctx->total_sent = spu_exp->total_sent; | |
2370 | rctx->is_sw_hmac = spu_exp->is_sw_hmac; | |
2371 | memcpy(rctx->hash_carry, spu_exp->hash_carry, sizeof(rctx->hash_carry)); | |
2372 | rctx->hash_carry_len = spu_exp->hash_carry_len; | |
2373 | memcpy(rctx->incr_hash, spu_exp->incr_hash, sizeof(rctx->incr_hash)); | |
2374 | ||
2375 | return 0; | |
2376 | } | |
2377 | ||
2378 | static int ahash_hmac_setkey(struct crypto_ahash *ahash, const u8 *key, | |
2379 | unsigned int keylen) | |
2380 | { | |
2381 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash); | |
2382 | unsigned int blocksize = | |
2383 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash)); | |
2384 | unsigned int digestsize = crypto_ahash_digestsize(ahash); | |
2385 | unsigned int index; | |
2386 | int rc; | |
2387 | ||
2388 | flow_log("%s() ahash:%p key:%p keylen:%u blksz:%u digestsz:%u\n", | |
2389 | __func__, ahash, key, keylen, blocksize, digestsize); | |
2390 | flow_dump(" key: ", key, keylen); | |
2391 | ||
2392 | if (keylen > blocksize) { | |
2393 | switch (ctx->auth.alg) { | |
2394 | case HASH_ALG_MD5: | |
2395 | rc = do_shash("md5", ctx->authkey, key, keylen, NULL, | |
2396 | 0, NULL, 0); | |
2397 | break; | |
2398 | case HASH_ALG_SHA1: | |
2399 | rc = do_shash("sha1", ctx->authkey, key, keylen, NULL, | |
2400 | 0, NULL, 0); | |
2401 | break; | |
2402 | case HASH_ALG_SHA224: | |
2403 | rc = do_shash("sha224", ctx->authkey, key, keylen, NULL, | |
2404 | 0, NULL, 0); | |
2405 | break; | |
2406 | case HASH_ALG_SHA256: | |
2407 | rc = do_shash("sha256", ctx->authkey, key, keylen, NULL, | |
2408 | 0, NULL, 0); | |
2409 | break; | |
2410 | case HASH_ALG_SHA384: | |
2411 | rc = do_shash("sha384", ctx->authkey, key, keylen, NULL, | |
2412 | 0, NULL, 0); | |
2413 | break; | |
2414 | case HASH_ALG_SHA512: | |
2415 | rc = do_shash("sha512", ctx->authkey, key, keylen, NULL, | |
2416 | 0, NULL, 0); | |
2417 | break; | |
2418 | case HASH_ALG_SHA3_224: | |
2419 | rc = do_shash("sha3-224", ctx->authkey, key, keylen, | |
2420 | NULL, 0, NULL, 0); | |
2421 | break; | |
2422 | case HASH_ALG_SHA3_256: | |
2423 | rc = do_shash("sha3-256", ctx->authkey, key, keylen, | |
2424 | NULL, 0, NULL, 0); | |
2425 | break; | |
2426 | case HASH_ALG_SHA3_384: | |
2427 | rc = do_shash("sha3-384", ctx->authkey, key, keylen, | |
2428 | NULL, 0, NULL, 0); | |
2429 | break; | |
2430 | case HASH_ALG_SHA3_512: | |
2431 | rc = do_shash("sha3-512", ctx->authkey, key, keylen, | |
2432 | NULL, 0, NULL, 0); | |
2433 | break; | |
2434 | default: | |
2435 | pr_err("%s() Error: unknown hash alg\n", __func__); | |
2436 | return -EINVAL; | |
2437 | } | |
2438 | if (rc < 0) { | |
2439 | pr_err("%s() Error %d computing shash for %s\n", | |
2440 | __func__, rc, hash_alg_name[ctx->auth.alg]); | |
2441 | return rc; | |
2442 | } | |
2443 | ctx->authkeylen = digestsize; | |
2444 | ||
2445 | flow_log(" keylen > digestsize... hashed\n"); | |
2446 | flow_dump(" newkey: ", ctx->authkey, ctx->authkeylen); | |
2447 | } else { | |
2448 | memcpy(ctx->authkey, key, keylen); | |
2449 | ctx->authkeylen = keylen; | |
2450 | } | |
2451 | ||
2452 | /* | |
2453 | * Full HMAC operation in SPUM is not verified, | |
2454 | * So keeping the generation of IPAD, OPAD and | |
2455 | * outer hashing in software. | |
2456 | */ | |
2457 | if (iproc_priv.spu.spu_type == SPU_TYPE_SPUM) { | |
2458 | memcpy(ctx->ipad, ctx->authkey, ctx->authkeylen); | |
2459 | memset(ctx->ipad + ctx->authkeylen, 0, | |
2460 | blocksize - ctx->authkeylen); | |
2461 | ctx->authkeylen = 0; | |
2462 | memcpy(ctx->opad, ctx->ipad, blocksize); | |
2463 | ||
2464 | for (index = 0; index < blocksize; index++) { | |
1126d47d CL |
2465 | ctx->ipad[index] ^= HMAC_IPAD_VALUE; |
2466 | ctx->opad[index] ^= HMAC_OPAD_VALUE; | |
9d12ba86 RR |
2467 | } |
2468 | ||
2469 | flow_dump(" ipad: ", ctx->ipad, blocksize); | |
2470 | flow_dump(" opad: ", ctx->opad, blocksize); | |
2471 | } | |
2472 | ctx->digestsize = digestsize; | |
2473 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_HMAC]); | |
2474 | ||
2475 | return 0; | |
2476 | } | |
2477 | ||
2478 | static int ahash_hmac_init(struct ahash_request *req) | |
2479 | { | |
2480 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2481 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2482 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2483 | unsigned int blocksize = | |
2484 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
2485 | ||
2486 | flow_log("ahash_hmac_init()\n"); | |
2487 | ||
2488 | /* init the context as a hash */ | |
2489 | ahash_init(req); | |
2490 | ||
2491 | if (!spu_no_incr_hash(ctx)) { | |
2492 | /* SPU-M can do incr hashing but needs sw for outer HMAC */ | |
2493 | rctx->is_sw_hmac = true; | |
2494 | ctx->auth.mode = HASH_MODE_HASH; | |
2495 | /* start with a prepended ipad */ | |
2496 | memcpy(rctx->hash_carry, ctx->ipad, blocksize); | |
2497 | rctx->hash_carry_len = blocksize; | |
2498 | rctx->total_todo += blocksize; | |
2499 | } | |
2500 | ||
2501 | return 0; | |
2502 | } | |
2503 | ||
2504 | static int ahash_hmac_update(struct ahash_request *req) | |
2505 | { | |
2506 | flow_log("ahash_hmac_update() nbytes:%u\n", req->nbytes); | |
2507 | ||
2508 | if (!req->nbytes) | |
2509 | return 0; | |
2510 | ||
2511 | return ahash_update(req); | |
2512 | } | |
2513 | ||
2514 | static int ahash_hmac_final(struct ahash_request *req) | |
2515 | { | |
2516 | flow_log("ahash_hmac_final() nbytes:%u\n", req->nbytes); | |
2517 | ||
2518 | return ahash_final(req); | |
2519 | } | |
2520 | ||
2521 | static int ahash_hmac_finup(struct ahash_request *req) | |
2522 | { | |
2523 | flow_log("ahash_hmac_finupl() nbytes:%u\n", req->nbytes); | |
2524 | ||
2525 | return ahash_finup(req); | |
2526 | } | |
2527 | ||
2528 | static int ahash_hmac_digest(struct ahash_request *req) | |
2529 | { | |
2530 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2531 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2532 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2533 | unsigned int blocksize = | |
2534 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
2535 | ||
2536 | flow_log("ahash_hmac_digest() nbytes:%u\n", req->nbytes); | |
2537 | ||
2538 | /* Perform initialization and then call finup */ | |
2539 | __ahash_init(req); | |
2540 | ||
2541 | if (iproc_priv.spu.spu_type == SPU_TYPE_SPU2) { | |
2542 | /* | |
2543 | * SPU2 supports full HMAC implementation in the | |
2544 | * hardware, need not to generate IPAD, OPAD and | |
2545 | * outer hash in software. | |
2546 | * Only for hash key len > hash block size, SPU2 | |
2547 | * expects to perform hashing on the key, shorten | |
2548 | * it to digest size and feed it as hash key. | |
2549 | */ | |
2550 | rctx->is_sw_hmac = false; | |
2551 | ctx->auth.mode = HASH_MODE_HMAC; | |
2552 | } else { | |
2553 | rctx->is_sw_hmac = true; | |
2554 | ctx->auth.mode = HASH_MODE_HASH; | |
2555 | /* start with a prepended ipad */ | |
2556 | memcpy(rctx->hash_carry, ctx->ipad, blocksize); | |
2557 | rctx->hash_carry_len = blocksize; | |
2558 | rctx->total_todo += blocksize; | |
2559 | } | |
2560 | ||
2561 | return __ahash_finup(req); | |
2562 | } | |
2563 | ||
2564 | /* aead helpers */ | |
2565 | ||
2566 | static int aead_need_fallback(struct aead_request *req) | |
2567 | { | |
2568 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2569 | struct spu_hw *spu = &iproc_priv.spu; | |
2570 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2571 | struct iproc_ctx_s *ctx = crypto_aead_ctx(aead); | |
2572 | u32 payload_len; | |
2573 | ||
2574 | /* | |
2575 | * SPU hardware cannot handle the AES-GCM/CCM case where plaintext | |
2576 | * and AAD are both 0 bytes long. So use fallback in this case. | |
2577 | */ | |
2578 | if (((ctx->cipher.mode == CIPHER_MODE_GCM) || | |
2579 | (ctx->cipher.mode == CIPHER_MODE_CCM)) && | |
2580 | (req->assoclen == 0)) { | |
2581 | if ((rctx->is_encrypt && (req->cryptlen == 0)) || | |
2582 | (!rctx->is_encrypt && (req->cryptlen == ctx->digestsize))) { | |
2583 | flow_log("AES GCM/CCM needs fallback for 0 len req\n"); | |
2584 | return 1; | |
2585 | } | |
2586 | } | |
2587 | ||
2588 | /* SPU-M hardware only supports CCM digest size of 8, 12, or 16 bytes */ | |
2589 | if ((ctx->cipher.mode == CIPHER_MODE_CCM) && | |
2590 | (spu->spu_type == SPU_TYPE_SPUM) && | |
2591 | (ctx->digestsize != 8) && (ctx->digestsize != 12) && | |
2592 | (ctx->digestsize != 16)) { | |
b1a4b182 | 2593 | flow_log("%s() AES CCM needs fallback for digest size %d\n", |
9d12ba86 RR |
2594 | __func__, ctx->digestsize); |
2595 | return 1; | |
2596 | } | |
2597 | ||
2598 | /* | |
2599 | * SPU-M on NSP has an issue where AES-CCM hash is not correct | |
2600 | * when AAD size is 0 | |
2601 | */ | |
2602 | if ((ctx->cipher.mode == CIPHER_MODE_CCM) && | |
2603 | (spu->spu_subtype == SPU_SUBTYPE_SPUM_NSP) && | |
2604 | (req->assoclen == 0)) { | |
2605 | flow_log("%s() AES_CCM needs fallback for 0 len AAD on NSP\n", | |
2606 | __func__); | |
2607 | return 1; | |
2608 | } | |
2609 | ||
b3553eff IP |
2610 | /* |
2611 | * RFC4106 and RFC4543 cannot handle the case where AAD is other than | |
2612 | * 16 or 20 bytes long. So use fallback in this case. | |
2613 | */ | |
2614 | if (ctx->cipher.mode == CIPHER_MODE_GCM && | |
2615 | ctx->cipher.alg == CIPHER_ALG_AES && | |
2616 | rctx->iv_ctr_len == GCM_RFC4106_IV_SIZE && | |
2617 | req->assoclen != 16 && req->assoclen != 20) { | |
2618 | flow_log("RFC4106/RFC4543 needs fallback for assoclen" | |
2619 | " other than 16 or 20 bytes\n"); | |
2620 | return 1; | |
2621 | } | |
2622 | ||
9d12ba86 RR |
2623 | payload_len = req->cryptlen; |
2624 | if (spu->spu_type == SPU_TYPE_SPUM) | |
2625 | payload_len += req->assoclen; | |
2626 | ||
2627 | flow_log("%s() payload len: %u\n", __func__, payload_len); | |
2628 | ||
2629 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
2630 | return 0; | |
2631 | else | |
2632 | return payload_len > ctx->max_payload; | |
2633 | } | |
2634 | ||
2635 | static void aead_complete(struct crypto_async_request *areq, int err) | |
2636 | { | |
2637 | struct aead_request *req = | |
2638 | container_of(areq, struct aead_request, base); | |
2639 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2640 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2641 | ||
2642 | flow_log("%s() err:%d\n", __func__, err); | |
2643 | ||
2644 | areq->tfm = crypto_aead_tfm(aead); | |
2645 | ||
2646 | areq->complete = rctx->old_complete; | |
2647 | areq->data = rctx->old_data; | |
2648 | ||
2649 | areq->complete(areq, err); | |
2650 | } | |
2651 | ||
2652 | static int aead_do_fallback(struct aead_request *req, bool is_encrypt) | |
2653 | { | |
2654 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2655 | struct crypto_tfm *tfm = crypto_aead_tfm(aead); | |
2656 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2657 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
2658 | int err; | |
2659 | u32 req_flags; | |
2660 | ||
2661 | flow_log("%s() enc:%u\n", __func__, is_encrypt); | |
2662 | ||
2663 | if (ctx->fallback_cipher) { | |
2664 | /* Store the cipher tfm and then use the fallback tfm */ | |
2665 | rctx->old_tfm = tfm; | |
2666 | aead_request_set_tfm(req, ctx->fallback_cipher); | |
2667 | /* | |
2668 | * Save the callback and chain ourselves in, so we can restore | |
2669 | * the tfm | |
2670 | */ | |
2671 | rctx->old_complete = req->base.complete; | |
2672 | rctx->old_data = req->base.data; | |
2673 | req_flags = aead_request_flags(req); | |
2674 | aead_request_set_callback(req, req_flags, aead_complete, req); | |
2675 | err = is_encrypt ? crypto_aead_encrypt(req) : | |
2676 | crypto_aead_decrypt(req); | |
2677 | ||
2678 | if (err == 0) { | |
2679 | /* | |
2680 | * fallback was synchronous (did not return | |
2681 | * -EINPROGRESS). So restore request state here. | |
2682 | */ | |
2683 | aead_request_set_callback(req, req_flags, | |
2684 | rctx->old_complete, req); | |
2685 | req->base.data = rctx->old_data; | |
2686 | aead_request_set_tfm(req, aead); | |
2687 | flow_log("%s() fallback completed successfully\n\n", | |
2688 | __func__); | |
2689 | } | |
2690 | } else { | |
2691 | err = -EINVAL; | |
2692 | } | |
2693 | ||
2694 | return err; | |
2695 | } | |
2696 | ||
2697 | static int aead_enqueue(struct aead_request *req, bool is_encrypt) | |
2698 | { | |
2699 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2700 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2701 | struct iproc_ctx_s *ctx = crypto_aead_ctx(aead); | |
2702 | int err; | |
2703 | ||
2704 | flow_log("%s() enc:%u\n", __func__, is_encrypt); | |
2705 | ||
2706 | if (req->assoclen > MAX_ASSOC_SIZE) { | |
2707 | pr_err | |
2708 | ("%s() Error: associated data too long. (%u > %u bytes)\n", | |
2709 | __func__, req->assoclen, MAX_ASSOC_SIZE); | |
2710 | return -EINVAL; | |
2711 | } | |
2712 | ||
2713 | rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2714 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2715 | rctx->parent = &req->base; | |
2716 | rctx->is_encrypt = is_encrypt; | |
2717 | rctx->bd_suppress = false; | |
2718 | rctx->total_todo = req->cryptlen; | |
2719 | rctx->src_sent = 0; | |
2720 | rctx->total_sent = 0; | |
2721 | rctx->total_received = 0; | |
2722 | rctx->is_sw_hmac = false; | |
2723 | rctx->ctx = ctx; | |
2724 | memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message)); | |
2725 | ||
2726 | /* assoc data is at start of src sg */ | |
2727 | rctx->assoc = req->src; | |
2728 | ||
2729 | /* | |
2730 | * Init current position in src scatterlist to be after assoc data. | |
2731 | * src_skip set to buffer offset where data begins. (Assoc data could | |
2732 | * end in the middle of a buffer.) | |
2733 | */ | |
2734 | if (spu_sg_at_offset(req->src, req->assoclen, &rctx->src_sg, | |
2735 | &rctx->src_skip) < 0) { | |
2736 | pr_err("%s() Error: Unable to find start of src data\n", | |
2737 | __func__); | |
2738 | return -EINVAL; | |
2739 | } | |
2740 | ||
2741 | rctx->src_nents = 0; | |
2742 | rctx->dst_nents = 0; | |
2743 | if (req->dst == req->src) { | |
2744 | rctx->dst_sg = rctx->src_sg; | |
2745 | rctx->dst_skip = rctx->src_skip; | |
2746 | } else { | |
2747 | /* | |
2748 | * Expect req->dst to have room for assoc data followed by | |
2749 | * output data and ICV, if encrypt. So initialize dst_sg | |
2750 | * to point beyond assoc len offset. | |
2751 | */ | |
2752 | if (spu_sg_at_offset(req->dst, req->assoclen, &rctx->dst_sg, | |
2753 | &rctx->dst_skip) < 0) { | |
2754 | pr_err("%s() Error: Unable to find start of dst data\n", | |
2755 | __func__); | |
2756 | return -EINVAL; | |
2757 | } | |
2758 | } | |
2759 | ||
2760 | if (ctx->cipher.mode == CIPHER_MODE_CBC || | |
2761 | ctx->cipher.mode == CIPHER_MODE_CTR || | |
2762 | ctx->cipher.mode == CIPHER_MODE_OFB || | |
2763 | ctx->cipher.mode == CIPHER_MODE_XTS || | |
2764 | ctx->cipher.mode == CIPHER_MODE_GCM) { | |
2765 | rctx->iv_ctr_len = | |
2766 | ctx->salt_len + | |
2767 | crypto_aead_ivsize(crypto_aead_reqtfm(req)); | |
2768 | } else if (ctx->cipher.mode == CIPHER_MODE_CCM) { | |
2769 | rctx->iv_ctr_len = CCM_AES_IV_SIZE; | |
2770 | } else { | |
2771 | rctx->iv_ctr_len = 0; | |
2772 | } | |
2773 | ||
2774 | rctx->hash_carry_len = 0; | |
2775 | ||
2776 | flow_log(" src sg: %p\n", req->src); | |
2777 | flow_log(" rctx->src_sg: %p, src_skip %u\n", | |
2778 | rctx->src_sg, rctx->src_skip); | |
2779 | flow_log(" assoc: %p, assoclen %u\n", rctx->assoc, req->assoclen); | |
2780 | flow_log(" dst sg: %p\n", req->dst); | |
2781 | flow_log(" rctx->dst_sg: %p, dst_skip %u\n", | |
2782 | rctx->dst_sg, rctx->dst_skip); | |
2783 | flow_log(" iv_ctr_len:%u\n", rctx->iv_ctr_len); | |
2784 | flow_dump(" iv: ", req->iv, rctx->iv_ctr_len); | |
2785 | flow_log(" authkeylen:%u\n", ctx->authkeylen); | |
2786 | flow_log(" is_esp: %s\n", ctx->is_esp ? "yes" : "no"); | |
2787 | ||
2788 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
2789 | flow_log(" max_payload infinite"); | |
2790 | else | |
2791 | flow_log(" max_payload: %u\n", ctx->max_payload); | |
2792 | ||
2793 | if (unlikely(aead_need_fallback(req))) | |
2794 | return aead_do_fallback(req, is_encrypt); | |
2795 | ||
2796 | /* | |
2797 | * Do memory allocations for request after fallback check, because if we | |
2798 | * do fallback, we won't call finish_req() to dealloc. | |
2799 | */ | |
2800 | if (rctx->iv_ctr_len) { | |
2801 | if (ctx->salt_len) | |
2802 | memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset, | |
2803 | ctx->salt, ctx->salt_len); | |
2804 | memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset + ctx->salt_len, | |
2805 | req->iv, | |
2806 | rctx->iv_ctr_len - ctx->salt_len - ctx->salt_offset); | |
2807 | } | |
2808 | ||
2809 | rctx->chan_idx = select_channel(); | |
2810 | err = handle_aead_req(rctx); | |
2811 | if (err != -EINPROGRESS) | |
2812 | /* synchronous result */ | |
2813 | spu_chunk_cleanup(rctx); | |
2814 | ||
2815 | return err; | |
2816 | } | |
2817 | ||
2818 | static int aead_authenc_setkey(struct crypto_aead *cipher, | |
2819 | const u8 *key, unsigned int keylen) | |
2820 | { | |
2821 | struct spu_hw *spu = &iproc_priv.spu; | |
2822 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
2823 | struct crypto_tfm *tfm = crypto_aead_tfm(cipher); | |
ab57b335 EB |
2824 | struct crypto_authenc_keys keys; |
2825 | int ret; | |
9d12ba86 RR |
2826 | |
2827 | flow_log("%s() aead:%p key:%p keylen:%u\n", __func__, cipher, key, | |
2828 | keylen); | |
2829 | flow_dump(" key: ", key, keylen); | |
2830 | ||
ab57b335 EB |
2831 | ret = crypto_authenc_extractkeys(&keys, key, keylen); |
2832 | if (ret) | |
9d12ba86 | 2833 | goto badkey; |
9d12ba86 | 2834 | |
ab57b335 EB |
2835 | if (keys.enckeylen > MAX_KEY_SIZE || |
2836 | keys.authkeylen > MAX_KEY_SIZE) | |
9d12ba86 RR |
2837 | goto badkey; |
2838 | ||
ab57b335 EB |
2839 | ctx->enckeylen = keys.enckeylen; |
2840 | ctx->authkeylen = keys.authkeylen; | |
9d12ba86 | 2841 | |
ab57b335 | 2842 | memcpy(ctx->enckey, keys.enckey, keys.enckeylen); |
9d12ba86 RR |
2843 | /* May end up padding auth key. So make sure it's zeroed. */ |
2844 | memset(ctx->authkey, 0, sizeof(ctx->authkey)); | |
ab57b335 | 2845 | memcpy(ctx->authkey, keys.authkey, keys.authkeylen); |
9d12ba86 RR |
2846 | |
2847 | switch (ctx->alg->cipher_info.alg) { | |
2848 | case CIPHER_ALG_DES: | |
05a7238d AB |
2849 | if (verify_aead_des_key(cipher, keys.enckey, keys.enckeylen)) |
2850 | return -EINVAL; | |
9d12ba86 | 2851 | |
05a7238d | 2852 | ctx->cipher_type = CIPHER_TYPE_DES; |
9d12ba86 RR |
2853 | break; |
2854 | case CIPHER_ALG_3DES: | |
05a7238d | 2855 | if (verify_aead_des3_key(cipher, keys.enckey, keys.enckeylen)) |
9d12ba86 | 2856 | return -EINVAL; |
05a7238d AB |
2857 | |
2858 | ctx->cipher_type = CIPHER_TYPE_3DES; | |
9d12ba86 RR |
2859 | break; |
2860 | case CIPHER_ALG_AES: | |
2861 | switch (ctx->enckeylen) { | |
2862 | case AES_KEYSIZE_128: | |
2863 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
2864 | break; | |
2865 | case AES_KEYSIZE_192: | |
2866 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
2867 | break; | |
2868 | case AES_KEYSIZE_256: | |
2869 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
2870 | break; | |
2871 | default: | |
2872 | goto badkey; | |
2873 | } | |
2874 | break; | |
2875 | case CIPHER_ALG_RC4: | |
2876 | ctx->cipher_type = CIPHER_TYPE_INIT; | |
2877 | break; | |
2878 | default: | |
2879 | pr_err("%s() Error: Unknown cipher alg\n", __func__); | |
2880 | return -EINVAL; | |
2881 | } | |
2882 | ||
2883 | flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen, | |
2884 | ctx->authkeylen); | |
2885 | flow_dump(" enc: ", ctx->enckey, ctx->enckeylen); | |
2886 | flow_dump(" auth: ", ctx->authkey, ctx->authkeylen); | |
2887 | ||
2888 | /* setkey the fallback just in case we needto use it */ | |
2889 | if (ctx->fallback_cipher) { | |
2890 | flow_log(" running fallback setkey()\n"); | |
2891 | ||
2892 | ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK; | |
2893 | ctx->fallback_cipher->base.crt_flags |= | |
2894 | tfm->crt_flags & CRYPTO_TFM_REQ_MASK; | |
ab57b335 | 2895 | ret = crypto_aead_setkey(ctx->fallback_cipher, key, keylen); |
9d12ba86 RR |
2896 | if (ret) { |
2897 | flow_log(" fallback setkey() returned:%d\n", ret); | |
2898 | tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK; | |
2899 | tfm->crt_flags |= | |
2900 | (ctx->fallback_cipher->base.crt_flags & | |
2901 | CRYPTO_TFM_RES_MASK); | |
2902 | } | |
2903 | } | |
2904 | ||
2905 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, | |
2906 | ctx->enckeylen, | |
2907 | false); | |
2908 | ||
2909 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]); | |
2910 | ||
2911 | return ret; | |
2912 | ||
2913 | badkey: | |
2914 | ctx->enckeylen = 0; | |
2915 | ctx->authkeylen = 0; | |
2916 | ctx->digestsize = 0; | |
2917 | ||
9d12ba86 RR |
2918 | return -EINVAL; |
2919 | } | |
2920 | ||
2921 | static int aead_gcm_ccm_setkey(struct crypto_aead *cipher, | |
2922 | const u8 *key, unsigned int keylen) | |
2923 | { | |
2924 | struct spu_hw *spu = &iproc_priv.spu; | |
2925 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
2926 | struct crypto_tfm *tfm = crypto_aead_tfm(cipher); | |
2927 | ||
2928 | int ret = 0; | |
2929 | ||
2930 | flow_log("%s() keylen:%u\n", __func__, keylen); | |
2931 | flow_dump(" key: ", key, keylen); | |
2932 | ||
2933 | if (!ctx->is_esp) | |
2934 | ctx->digestsize = keylen; | |
2935 | ||
2936 | ctx->enckeylen = keylen; | |
2937 | ctx->authkeylen = 0; | |
2938 | memcpy(ctx->enckey, key, ctx->enckeylen); | |
2939 | ||
2940 | switch (ctx->enckeylen) { | |
2941 | case AES_KEYSIZE_128: | |
2942 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
2943 | break; | |
2944 | case AES_KEYSIZE_192: | |
2945 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
2946 | break; | |
2947 | case AES_KEYSIZE_256: | |
2948 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
2949 | break; | |
2950 | default: | |
2951 | goto badkey; | |
2952 | } | |
2953 | ||
2954 | flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen, | |
2955 | ctx->authkeylen); | |
2956 | flow_dump(" enc: ", ctx->enckey, ctx->enckeylen); | |
2957 | flow_dump(" auth: ", ctx->authkey, ctx->authkeylen); | |
2958 | ||
2959 | /* setkey the fallback just in case we need to use it */ | |
2960 | if (ctx->fallback_cipher) { | |
2961 | flow_log(" running fallback setkey()\n"); | |
2962 | ||
2963 | ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK; | |
2964 | ctx->fallback_cipher->base.crt_flags |= | |
2965 | tfm->crt_flags & CRYPTO_TFM_REQ_MASK; | |
2966 | ret = crypto_aead_setkey(ctx->fallback_cipher, key, | |
2967 | keylen + ctx->salt_len); | |
2968 | if (ret) { | |
2969 | flow_log(" fallback setkey() returned:%d\n", ret); | |
2970 | tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK; | |
2971 | tfm->crt_flags |= | |
2972 | (ctx->fallback_cipher->base.crt_flags & | |
2973 | CRYPTO_TFM_RES_MASK); | |
2974 | } | |
2975 | } | |
2976 | ||
2977 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, | |
2978 | ctx->enckeylen, | |
2979 | false); | |
2980 | ||
2981 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]); | |
2982 | ||
2983 | flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen, | |
2984 | ctx->authkeylen); | |
2985 | ||
2986 | return ret; | |
2987 | ||
2988 | badkey: | |
2989 | ctx->enckeylen = 0; | |
2990 | ctx->authkeylen = 0; | |
2991 | ctx->digestsize = 0; | |
2992 | ||
9d12ba86 RR |
2993 | return -EINVAL; |
2994 | } | |
2995 | ||
2996 | /** | |
2997 | * aead_gcm_esp_setkey() - setkey() operation for ESP variant of GCM AES. | |
2998 | * @cipher: AEAD structure | |
2999 | * @key: Key followed by 4 bytes of salt | |
3000 | * @keylen: Length of key plus salt, in bytes | |
3001 | * | |
3002 | * Extracts salt from key and stores it to be prepended to IV on each request. | |
3003 | * Digest is always 16 bytes | |
3004 | * | |
3005 | * Return: Value from generic gcm setkey. | |
3006 | */ | |
3007 | static int aead_gcm_esp_setkey(struct crypto_aead *cipher, | |
3008 | const u8 *key, unsigned int keylen) | |
3009 | { | |
3010 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
3011 | ||
3012 | flow_log("%s\n", __func__); | |
3013 | ctx->salt_len = GCM_ESP_SALT_SIZE; | |
3014 | ctx->salt_offset = GCM_ESP_SALT_OFFSET; | |
3015 | memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE); | |
3016 | keylen -= GCM_ESP_SALT_SIZE; | |
3017 | ctx->digestsize = GCM_ESP_DIGESTSIZE; | |
3018 | ctx->is_esp = true; | |
3019 | flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE); | |
3020 | ||
3021 | return aead_gcm_ccm_setkey(cipher, key, keylen); | |
3022 | } | |
3023 | ||
3024 | /** | |
3025 | * rfc4543_gcm_esp_setkey() - setkey operation for RFC4543 variant of GCM/GMAC. | |
3026 | * cipher: AEAD structure | |
3027 | * key: Key followed by 4 bytes of salt | |
3028 | * keylen: Length of key plus salt, in bytes | |
3029 | * | |
3030 | * Extracts salt from key and stores it to be prepended to IV on each request. | |
3031 | * Digest is always 16 bytes | |
3032 | * | |
3033 | * Return: Value from generic gcm setkey. | |
3034 | */ | |
3035 | static int rfc4543_gcm_esp_setkey(struct crypto_aead *cipher, | |
3036 | const u8 *key, unsigned int keylen) | |
3037 | { | |
3038 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
3039 | ||
3040 | flow_log("%s\n", __func__); | |
3041 | ctx->salt_len = GCM_ESP_SALT_SIZE; | |
3042 | ctx->salt_offset = GCM_ESP_SALT_OFFSET; | |
3043 | memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE); | |
3044 | keylen -= GCM_ESP_SALT_SIZE; | |
3045 | ctx->digestsize = GCM_ESP_DIGESTSIZE; | |
3046 | ctx->is_esp = true; | |
3047 | ctx->is_rfc4543 = true; | |
3048 | flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE); | |
3049 | ||
3050 | return aead_gcm_ccm_setkey(cipher, key, keylen); | |
3051 | } | |
3052 | ||
3053 | /** | |
3054 | * aead_ccm_esp_setkey() - setkey() operation for ESP variant of CCM AES. | |
3055 | * @cipher: AEAD structure | |
3056 | * @key: Key followed by 4 bytes of salt | |
3057 | * @keylen: Length of key plus salt, in bytes | |
3058 | * | |
3059 | * Extracts salt from key and stores it to be prepended to IV on each request. | |
3060 | * Digest is always 16 bytes | |
3061 | * | |
3062 | * Return: Value from generic ccm setkey. | |
3063 | */ | |
3064 | static int aead_ccm_esp_setkey(struct crypto_aead *cipher, | |
3065 | const u8 *key, unsigned int keylen) | |
3066 | { | |
3067 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
3068 | ||
3069 | flow_log("%s\n", __func__); | |
3070 | ctx->salt_len = CCM_ESP_SALT_SIZE; | |
3071 | ctx->salt_offset = CCM_ESP_SALT_OFFSET; | |
3072 | memcpy(ctx->salt, key + keylen - CCM_ESP_SALT_SIZE, CCM_ESP_SALT_SIZE); | |
3073 | keylen -= CCM_ESP_SALT_SIZE; | |
3074 | ctx->is_esp = true; | |
3075 | flow_dump("salt: ", ctx->salt, CCM_ESP_SALT_SIZE); | |
3076 | ||
3077 | return aead_gcm_ccm_setkey(cipher, key, keylen); | |
3078 | } | |
3079 | ||
3080 | static int aead_setauthsize(struct crypto_aead *cipher, unsigned int authsize) | |
3081 | { | |
3082 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
3083 | int ret = 0; | |
3084 | ||
3085 | flow_log("%s() authkeylen:%u authsize:%u\n", | |
3086 | __func__, ctx->authkeylen, authsize); | |
3087 | ||
3088 | ctx->digestsize = authsize; | |
3089 | ||
3090 | /* setkey the fallback just in case we needto use it */ | |
3091 | if (ctx->fallback_cipher) { | |
3092 | flow_log(" running fallback setauth()\n"); | |
3093 | ||
3094 | ret = crypto_aead_setauthsize(ctx->fallback_cipher, authsize); | |
3095 | if (ret) | |
3096 | flow_log(" fallback setauth() returned:%d\n", ret); | |
3097 | } | |
3098 | ||
3099 | return ret; | |
3100 | } | |
3101 | ||
3102 | static int aead_encrypt(struct aead_request *req) | |
3103 | { | |
3104 | flow_log("%s() cryptlen:%u %08x\n", __func__, req->cryptlen, | |
3105 | req->cryptlen); | |
3106 | dump_sg(req->src, 0, req->cryptlen + req->assoclen); | |
3107 | flow_log(" assoc_len:%u\n", req->assoclen); | |
3108 | ||
3109 | return aead_enqueue(req, true); | |
3110 | } | |
3111 | ||
3112 | static int aead_decrypt(struct aead_request *req) | |
3113 | { | |
3114 | flow_log("%s() cryptlen:%u\n", __func__, req->cryptlen); | |
3115 | dump_sg(req->src, 0, req->cryptlen + req->assoclen); | |
3116 | flow_log(" assoc_len:%u\n", req->assoclen); | |
3117 | ||
3118 | return aead_enqueue(req, false); | |
3119 | } | |
3120 | ||
3121 | /* ==================== Supported Cipher Algorithms ==================== */ | |
3122 | ||
3123 | static struct iproc_alg_s driver_algs[] = { | |
3124 | { | |
3125 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3126 | .alg.aead = { | |
3127 | .base = { | |
3128 | .cra_name = "gcm(aes)", | |
3129 | .cra_driver_name = "gcm-aes-iproc", | |
3130 | .cra_blocksize = AES_BLOCK_SIZE, | |
3131 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3132 | }, | |
3133 | .setkey = aead_gcm_ccm_setkey, | |
3134 | .ivsize = GCM_AES_IV_SIZE, | |
3135 | .maxauthsize = AES_BLOCK_SIZE, | |
3136 | }, | |
3137 | .cipher_info = { | |
3138 | .alg = CIPHER_ALG_AES, | |
3139 | .mode = CIPHER_MODE_GCM, | |
3140 | }, | |
3141 | .auth_info = { | |
3142 | .alg = HASH_ALG_AES, | |
3143 | .mode = HASH_MODE_GCM, | |
3144 | }, | |
3145 | .auth_first = 0, | |
3146 | }, | |
3147 | { | |
3148 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3149 | .alg.aead = { | |
3150 | .base = { | |
3151 | .cra_name = "ccm(aes)", | |
3152 | .cra_driver_name = "ccm-aes-iproc", | |
3153 | .cra_blocksize = AES_BLOCK_SIZE, | |
3154 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3155 | }, | |
3156 | .setkey = aead_gcm_ccm_setkey, | |
3157 | .ivsize = CCM_AES_IV_SIZE, | |
3158 | .maxauthsize = AES_BLOCK_SIZE, | |
3159 | }, | |
3160 | .cipher_info = { | |
3161 | .alg = CIPHER_ALG_AES, | |
3162 | .mode = CIPHER_MODE_CCM, | |
3163 | }, | |
3164 | .auth_info = { | |
3165 | .alg = HASH_ALG_AES, | |
3166 | .mode = HASH_MODE_CCM, | |
3167 | }, | |
3168 | .auth_first = 0, | |
3169 | }, | |
3170 | { | |
3171 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3172 | .alg.aead = { | |
3173 | .base = { | |
3174 | .cra_name = "rfc4106(gcm(aes))", | |
3175 | .cra_driver_name = "gcm-aes-esp-iproc", | |
3176 | .cra_blocksize = AES_BLOCK_SIZE, | |
3177 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3178 | }, | |
3179 | .setkey = aead_gcm_esp_setkey, | |
a59851d2 | 3180 | .ivsize = GCM_RFC4106_IV_SIZE, |
9d12ba86 RR |
3181 | .maxauthsize = AES_BLOCK_SIZE, |
3182 | }, | |
3183 | .cipher_info = { | |
3184 | .alg = CIPHER_ALG_AES, | |
3185 | .mode = CIPHER_MODE_GCM, | |
3186 | }, | |
3187 | .auth_info = { | |
3188 | .alg = HASH_ALG_AES, | |
3189 | .mode = HASH_MODE_GCM, | |
3190 | }, | |
3191 | .auth_first = 0, | |
3192 | }, | |
3193 | { | |
3194 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3195 | .alg.aead = { | |
3196 | .base = { | |
3197 | .cra_name = "rfc4309(ccm(aes))", | |
3198 | .cra_driver_name = "ccm-aes-esp-iproc", | |
3199 | .cra_blocksize = AES_BLOCK_SIZE, | |
3200 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3201 | }, | |
3202 | .setkey = aead_ccm_esp_setkey, | |
3203 | .ivsize = CCM_AES_IV_SIZE, | |
3204 | .maxauthsize = AES_BLOCK_SIZE, | |
3205 | }, | |
3206 | .cipher_info = { | |
3207 | .alg = CIPHER_ALG_AES, | |
3208 | .mode = CIPHER_MODE_CCM, | |
3209 | }, | |
3210 | .auth_info = { | |
3211 | .alg = HASH_ALG_AES, | |
3212 | .mode = HASH_MODE_CCM, | |
3213 | }, | |
3214 | .auth_first = 0, | |
3215 | }, | |
3216 | { | |
3217 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3218 | .alg.aead = { | |
3219 | .base = { | |
3220 | .cra_name = "rfc4543(gcm(aes))", | |
3221 | .cra_driver_name = "gmac-aes-esp-iproc", | |
3222 | .cra_blocksize = AES_BLOCK_SIZE, | |
3223 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3224 | }, | |
3225 | .setkey = rfc4543_gcm_esp_setkey, | |
a59851d2 | 3226 | .ivsize = GCM_RFC4106_IV_SIZE, |
9d12ba86 RR |
3227 | .maxauthsize = AES_BLOCK_SIZE, |
3228 | }, | |
3229 | .cipher_info = { | |
3230 | .alg = CIPHER_ALG_AES, | |
3231 | .mode = CIPHER_MODE_GCM, | |
3232 | }, | |
3233 | .auth_info = { | |
3234 | .alg = HASH_ALG_AES, | |
3235 | .mode = HASH_MODE_GCM, | |
3236 | }, | |
3237 | .auth_first = 0, | |
3238 | }, | |
3239 | { | |
3240 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3241 | .alg.aead = { | |
3242 | .base = { | |
3243 | .cra_name = "authenc(hmac(md5),cbc(aes))", | |
3244 | .cra_driver_name = "authenc-hmac-md5-cbc-aes-iproc", | |
3245 | .cra_blocksize = AES_BLOCK_SIZE, | |
3246 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3247 | }, | |
3248 | .setkey = aead_authenc_setkey, | |
3249 | .ivsize = AES_BLOCK_SIZE, | |
3250 | .maxauthsize = MD5_DIGEST_SIZE, | |
3251 | }, | |
3252 | .cipher_info = { | |
3253 | .alg = CIPHER_ALG_AES, | |
3254 | .mode = CIPHER_MODE_CBC, | |
3255 | }, | |
3256 | .auth_info = { | |
3257 | .alg = HASH_ALG_MD5, | |
3258 | .mode = HASH_MODE_HMAC, | |
3259 | }, | |
3260 | .auth_first = 0, | |
3261 | }, | |
3262 | { | |
3263 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3264 | .alg.aead = { | |
3265 | .base = { | |
3266 | .cra_name = "authenc(hmac(sha1),cbc(aes))", | |
3267 | .cra_driver_name = "authenc-hmac-sha1-cbc-aes-iproc", | |
3268 | .cra_blocksize = AES_BLOCK_SIZE, | |
3269 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3270 | }, | |
3271 | .setkey = aead_authenc_setkey, | |
3272 | .ivsize = AES_BLOCK_SIZE, | |
3273 | .maxauthsize = SHA1_DIGEST_SIZE, | |
3274 | }, | |
3275 | .cipher_info = { | |
3276 | .alg = CIPHER_ALG_AES, | |
3277 | .mode = CIPHER_MODE_CBC, | |
3278 | }, | |
3279 | .auth_info = { | |
3280 | .alg = HASH_ALG_SHA1, | |
3281 | .mode = HASH_MODE_HMAC, | |
3282 | }, | |
3283 | .auth_first = 0, | |
3284 | }, | |
3285 | { | |
3286 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3287 | .alg.aead = { | |
3288 | .base = { | |
3289 | .cra_name = "authenc(hmac(sha256),cbc(aes))", | |
3290 | .cra_driver_name = "authenc-hmac-sha256-cbc-aes-iproc", | |
3291 | .cra_blocksize = AES_BLOCK_SIZE, | |
3292 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3293 | }, | |
3294 | .setkey = aead_authenc_setkey, | |
3295 | .ivsize = AES_BLOCK_SIZE, | |
3296 | .maxauthsize = SHA256_DIGEST_SIZE, | |
3297 | }, | |
3298 | .cipher_info = { | |
3299 | .alg = CIPHER_ALG_AES, | |
3300 | .mode = CIPHER_MODE_CBC, | |
3301 | }, | |
3302 | .auth_info = { | |
3303 | .alg = HASH_ALG_SHA256, | |
3304 | .mode = HASH_MODE_HMAC, | |
3305 | }, | |
3306 | .auth_first = 0, | |
3307 | }, | |
3308 | { | |
3309 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3310 | .alg.aead = { | |
3311 | .base = { | |
3312 | .cra_name = "authenc(hmac(md5),cbc(des))", | |
3313 | .cra_driver_name = "authenc-hmac-md5-cbc-des-iproc", | |
3314 | .cra_blocksize = DES_BLOCK_SIZE, | |
3315 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3316 | }, | |
3317 | .setkey = aead_authenc_setkey, | |
3318 | .ivsize = DES_BLOCK_SIZE, | |
3319 | .maxauthsize = MD5_DIGEST_SIZE, | |
3320 | }, | |
3321 | .cipher_info = { | |
3322 | .alg = CIPHER_ALG_DES, | |
3323 | .mode = CIPHER_MODE_CBC, | |
3324 | }, | |
3325 | .auth_info = { | |
3326 | .alg = HASH_ALG_MD5, | |
3327 | .mode = HASH_MODE_HMAC, | |
3328 | }, | |
3329 | .auth_first = 0, | |
3330 | }, | |
3331 | { | |
3332 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3333 | .alg.aead = { | |
3334 | .base = { | |
3335 | .cra_name = "authenc(hmac(sha1),cbc(des))", | |
3336 | .cra_driver_name = "authenc-hmac-sha1-cbc-des-iproc", | |
3337 | .cra_blocksize = DES_BLOCK_SIZE, | |
3338 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3339 | }, | |
3340 | .setkey = aead_authenc_setkey, | |
3341 | .ivsize = DES_BLOCK_SIZE, | |
3342 | .maxauthsize = SHA1_DIGEST_SIZE, | |
3343 | }, | |
3344 | .cipher_info = { | |
3345 | .alg = CIPHER_ALG_DES, | |
3346 | .mode = CIPHER_MODE_CBC, | |
3347 | }, | |
3348 | .auth_info = { | |
3349 | .alg = HASH_ALG_SHA1, | |
3350 | .mode = HASH_MODE_HMAC, | |
3351 | }, | |
3352 | .auth_first = 0, | |
3353 | }, | |
3354 | { | |
3355 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3356 | .alg.aead = { | |
3357 | .base = { | |
3358 | .cra_name = "authenc(hmac(sha224),cbc(des))", | |
3359 | .cra_driver_name = "authenc-hmac-sha224-cbc-des-iproc", | |
3360 | .cra_blocksize = DES_BLOCK_SIZE, | |
3361 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3362 | }, | |
3363 | .setkey = aead_authenc_setkey, | |
3364 | .ivsize = DES_BLOCK_SIZE, | |
3365 | .maxauthsize = SHA224_DIGEST_SIZE, | |
3366 | }, | |
3367 | .cipher_info = { | |
3368 | .alg = CIPHER_ALG_DES, | |
3369 | .mode = CIPHER_MODE_CBC, | |
3370 | }, | |
3371 | .auth_info = { | |
3372 | .alg = HASH_ALG_SHA224, | |
3373 | .mode = HASH_MODE_HMAC, | |
3374 | }, | |
3375 | .auth_first = 0, | |
3376 | }, | |
3377 | { | |
3378 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3379 | .alg.aead = { | |
3380 | .base = { | |
3381 | .cra_name = "authenc(hmac(sha256),cbc(des))", | |
3382 | .cra_driver_name = "authenc-hmac-sha256-cbc-des-iproc", | |
3383 | .cra_blocksize = DES_BLOCK_SIZE, | |
3384 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3385 | }, | |
3386 | .setkey = aead_authenc_setkey, | |
3387 | .ivsize = DES_BLOCK_SIZE, | |
3388 | .maxauthsize = SHA256_DIGEST_SIZE, | |
3389 | }, | |
3390 | .cipher_info = { | |
3391 | .alg = CIPHER_ALG_DES, | |
3392 | .mode = CIPHER_MODE_CBC, | |
3393 | }, | |
3394 | .auth_info = { | |
3395 | .alg = HASH_ALG_SHA256, | |
3396 | .mode = HASH_MODE_HMAC, | |
3397 | }, | |
3398 | .auth_first = 0, | |
3399 | }, | |
3400 | { | |
3401 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3402 | .alg.aead = { | |
3403 | .base = { | |
3404 | .cra_name = "authenc(hmac(sha384),cbc(des))", | |
3405 | .cra_driver_name = "authenc-hmac-sha384-cbc-des-iproc", | |
3406 | .cra_blocksize = DES_BLOCK_SIZE, | |
3407 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3408 | }, | |
3409 | .setkey = aead_authenc_setkey, | |
3410 | .ivsize = DES_BLOCK_SIZE, | |
3411 | .maxauthsize = SHA384_DIGEST_SIZE, | |
3412 | }, | |
3413 | .cipher_info = { | |
3414 | .alg = CIPHER_ALG_DES, | |
3415 | .mode = CIPHER_MODE_CBC, | |
3416 | }, | |
3417 | .auth_info = { | |
3418 | .alg = HASH_ALG_SHA384, | |
3419 | .mode = HASH_MODE_HMAC, | |
3420 | }, | |
3421 | .auth_first = 0, | |
3422 | }, | |
3423 | { | |
3424 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3425 | .alg.aead = { | |
3426 | .base = { | |
3427 | .cra_name = "authenc(hmac(sha512),cbc(des))", | |
3428 | .cra_driver_name = "authenc-hmac-sha512-cbc-des-iproc", | |
3429 | .cra_blocksize = DES_BLOCK_SIZE, | |
3430 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3431 | }, | |
3432 | .setkey = aead_authenc_setkey, | |
3433 | .ivsize = DES_BLOCK_SIZE, | |
3434 | .maxauthsize = SHA512_DIGEST_SIZE, | |
3435 | }, | |
3436 | .cipher_info = { | |
3437 | .alg = CIPHER_ALG_DES, | |
3438 | .mode = CIPHER_MODE_CBC, | |
3439 | }, | |
3440 | .auth_info = { | |
3441 | .alg = HASH_ALG_SHA512, | |
3442 | .mode = HASH_MODE_HMAC, | |
3443 | }, | |
3444 | .auth_first = 0, | |
3445 | }, | |
3446 | { | |
3447 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3448 | .alg.aead = { | |
3449 | .base = { | |
3450 | .cra_name = "authenc(hmac(md5),cbc(des3_ede))", | |
3451 | .cra_driver_name = "authenc-hmac-md5-cbc-des3-iproc", | |
3452 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3453 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3454 | }, | |
3455 | .setkey = aead_authenc_setkey, | |
3456 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3457 | .maxauthsize = MD5_DIGEST_SIZE, | |
3458 | }, | |
3459 | .cipher_info = { | |
3460 | .alg = CIPHER_ALG_3DES, | |
3461 | .mode = CIPHER_MODE_CBC, | |
3462 | }, | |
3463 | .auth_info = { | |
3464 | .alg = HASH_ALG_MD5, | |
3465 | .mode = HASH_MODE_HMAC, | |
3466 | }, | |
3467 | .auth_first = 0, | |
3468 | }, | |
3469 | { | |
3470 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3471 | .alg.aead = { | |
3472 | .base = { | |
3473 | .cra_name = "authenc(hmac(sha1),cbc(des3_ede))", | |
3474 | .cra_driver_name = "authenc-hmac-sha1-cbc-des3-iproc", | |
3475 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3476 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3477 | }, | |
3478 | .setkey = aead_authenc_setkey, | |
3479 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3480 | .maxauthsize = SHA1_DIGEST_SIZE, | |
3481 | }, | |
3482 | .cipher_info = { | |
3483 | .alg = CIPHER_ALG_3DES, | |
3484 | .mode = CIPHER_MODE_CBC, | |
3485 | }, | |
3486 | .auth_info = { | |
3487 | .alg = HASH_ALG_SHA1, | |
3488 | .mode = HASH_MODE_HMAC, | |
3489 | }, | |
3490 | .auth_first = 0, | |
3491 | }, | |
3492 | { | |
3493 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3494 | .alg.aead = { | |
3495 | .base = { | |
3496 | .cra_name = "authenc(hmac(sha224),cbc(des3_ede))", | |
3497 | .cra_driver_name = "authenc-hmac-sha224-cbc-des3-iproc", | |
3498 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3499 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3500 | }, | |
3501 | .setkey = aead_authenc_setkey, | |
3502 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3503 | .maxauthsize = SHA224_DIGEST_SIZE, | |
3504 | }, | |
3505 | .cipher_info = { | |
3506 | .alg = CIPHER_ALG_3DES, | |
3507 | .mode = CIPHER_MODE_CBC, | |
3508 | }, | |
3509 | .auth_info = { | |
3510 | .alg = HASH_ALG_SHA224, | |
3511 | .mode = HASH_MODE_HMAC, | |
3512 | }, | |
3513 | .auth_first = 0, | |
3514 | }, | |
3515 | { | |
3516 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3517 | .alg.aead = { | |
3518 | .base = { | |
3519 | .cra_name = "authenc(hmac(sha256),cbc(des3_ede))", | |
3520 | .cra_driver_name = "authenc-hmac-sha256-cbc-des3-iproc", | |
3521 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3522 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3523 | }, | |
3524 | .setkey = aead_authenc_setkey, | |
3525 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3526 | .maxauthsize = SHA256_DIGEST_SIZE, | |
3527 | }, | |
3528 | .cipher_info = { | |
3529 | .alg = CIPHER_ALG_3DES, | |
3530 | .mode = CIPHER_MODE_CBC, | |
3531 | }, | |
3532 | .auth_info = { | |
3533 | .alg = HASH_ALG_SHA256, | |
3534 | .mode = HASH_MODE_HMAC, | |
3535 | }, | |
3536 | .auth_first = 0, | |
3537 | }, | |
3538 | { | |
3539 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3540 | .alg.aead = { | |
3541 | .base = { | |
3542 | .cra_name = "authenc(hmac(sha384),cbc(des3_ede))", | |
3543 | .cra_driver_name = "authenc-hmac-sha384-cbc-des3-iproc", | |
3544 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3545 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3546 | }, | |
3547 | .setkey = aead_authenc_setkey, | |
3548 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3549 | .maxauthsize = SHA384_DIGEST_SIZE, | |
3550 | }, | |
3551 | .cipher_info = { | |
3552 | .alg = CIPHER_ALG_3DES, | |
3553 | .mode = CIPHER_MODE_CBC, | |
3554 | }, | |
3555 | .auth_info = { | |
3556 | .alg = HASH_ALG_SHA384, | |
3557 | .mode = HASH_MODE_HMAC, | |
3558 | }, | |
3559 | .auth_first = 0, | |
3560 | }, | |
3561 | { | |
3562 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3563 | .alg.aead = { | |
3564 | .base = { | |
3565 | .cra_name = "authenc(hmac(sha512),cbc(des3_ede))", | |
3566 | .cra_driver_name = "authenc-hmac-sha512-cbc-des3-iproc", | |
3567 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3568 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC | |
3569 | }, | |
3570 | .setkey = aead_authenc_setkey, | |
3571 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3572 | .maxauthsize = SHA512_DIGEST_SIZE, | |
3573 | }, | |
3574 | .cipher_info = { | |
3575 | .alg = CIPHER_ALG_3DES, | |
3576 | .mode = CIPHER_MODE_CBC, | |
3577 | }, | |
3578 | .auth_info = { | |
3579 | .alg = HASH_ALG_SHA512, | |
3580 | .mode = HASH_MODE_HMAC, | |
3581 | }, | |
3582 | .auth_first = 0, | |
3583 | }, | |
3584 | ||
a9c01cd6 | 3585 | /* SKCIPHER algorithms. */ |
9d12ba86 | 3586 | { |
a9c01cd6 AB |
3587 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3588 | .alg.skcipher = { | |
3589 | .base.cra_name = "ecb(arc4)", | |
3590 | .base.cra_driver_name = "ecb-arc4-iproc", | |
3591 | .base.cra_blocksize = ARC4_BLOCK_SIZE, | |
3592 | .min_keysize = ARC4_MIN_KEY_SIZE, | |
3593 | .max_keysize = ARC4_MAX_KEY_SIZE, | |
3594 | .ivsize = 0, | |
9d12ba86 RR |
3595 | }, |
3596 | .cipher_info = { | |
3597 | .alg = CIPHER_ALG_RC4, | |
3598 | .mode = CIPHER_MODE_NONE, | |
3599 | }, | |
3600 | .auth_info = { | |
3601 | .alg = HASH_ALG_NONE, | |
3602 | .mode = HASH_MODE_NONE, | |
3603 | }, | |
3604 | }, | |
3605 | { | |
a9c01cd6 AB |
3606 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3607 | .alg.skcipher = { | |
3608 | .base.cra_name = "ofb(des)", | |
3609 | .base.cra_driver_name = "ofb-des-iproc", | |
3610 | .base.cra_blocksize = DES_BLOCK_SIZE, | |
3611 | .min_keysize = DES_KEY_SIZE, | |
3612 | .max_keysize = DES_KEY_SIZE, | |
3613 | .ivsize = DES_BLOCK_SIZE, | |
9d12ba86 RR |
3614 | }, |
3615 | .cipher_info = { | |
3616 | .alg = CIPHER_ALG_DES, | |
3617 | .mode = CIPHER_MODE_OFB, | |
3618 | }, | |
3619 | .auth_info = { | |
3620 | .alg = HASH_ALG_NONE, | |
3621 | .mode = HASH_MODE_NONE, | |
3622 | }, | |
3623 | }, | |
3624 | { | |
a9c01cd6 AB |
3625 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3626 | .alg.skcipher = { | |
3627 | .base.cra_name = "cbc(des)", | |
3628 | .base.cra_driver_name = "cbc-des-iproc", | |
3629 | .base.cra_blocksize = DES_BLOCK_SIZE, | |
3630 | .min_keysize = DES_KEY_SIZE, | |
3631 | .max_keysize = DES_KEY_SIZE, | |
3632 | .ivsize = DES_BLOCK_SIZE, | |
9d12ba86 RR |
3633 | }, |
3634 | .cipher_info = { | |
3635 | .alg = CIPHER_ALG_DES, | |
3636 | .mode = CIPHER_MODE_CBC, | |
3637 | }, | |
3638 | .auth_info = { | |
3639 | .alg = HASH_ALG_NONE, | |
3640 | .mode = HASH_MODE_NONE, | |
3641 | }, | |
3642 | }, | |
3643 | { | |
a9c01cd6 AB |
3644 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3645 | .alg.skcipher = { | |
3646 | .base.cra_name = "ecb(des)", | |
3647 | .base.cra_driver_name = "ecb-des-iproc", | |
3648 | .base.cra_blocksize = DES_BLOCK_SIZE, | |
3649 | .min_keysize = DES_KEY_SIZE, | |
3650 | .max_keysize = DES_KEY_SIZE, | |
3651 | .ivsize = 0, | |
9d12ba86 RR |
3652 | }, |
3653 | .cipher_info = { | |
3654 | .alg = CIPHER_ALG_DES, | |
3655 | .mode = CIPHER_MODE_ECB, | |
3656 | }, | |
3657 | .auth_info = { | |
3658 | .alg = HASH_ALG_NONE, | |
3659 | .mode = HASH_MODE_NONE, | |
3660 | }, | |
3661 | }, | |
3662 | { | |
a9c01cd6 AB |
3663 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3664 | .alg.skcipher = { | |
3665 | .base.cra_name = "ofb(des3_ede)", | |
3666 | .base.cra_driver_name = "ofb-des3-iproc", | |
3667 | .base.cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3668 | .min_keysize = DES3_EDE_KEY_SIZE, | |
3669 | .max_keysize = DES3_EDE_KEY_SIZE, | |
3670 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
9d12ba86 RR |
3671 | }, |
3672 | .cipher_info = { | |
3673 | .alg = CIPHER_ALG_3DES, | |
3674 | .mode = CIPHER_MODE_OFB, | |
3675 | }, | |
3676 | .auth_info = { | |
3677 | .alg = HASH_ALG_NONE, | |
3678 | .mode = HASH_MODE_NONE, | |
3679 | }, | |
3680 | }, | |
3681 | { | |
a9c01cd6 AB |
3682 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3683 | .alg.skcipher = { | |
3684 | .base.cra_name = "cbc(des3_ede)", | |
3685 | .base.cra_driver_name = "cbc-des3-iproc", | |
3686 | .base.cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3687 | .min_keysize = DES3_EDE_KEY_SIZE, | |
3688 | .max_keysize = DES3_EDE_KEY_SIZE, | |
3689 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
9d12ba86 RR |
3690 | }, |
3691 | .cipher_info = { | |
3692 | .alg = CIPHER_ALG_3DES, | |
3693 | .mode = CIPHER_MODE_CBC, | |
3694 | }, | |
3695 | .auth_info = { | |
3696 | .alg = HASH_ALG_NONE, | |
3697 | .mode = HASH_MODE_NONE, | |
3698 | }, | |
3699 | }, | |
3700 | { | |
a9c01cd6 AB |
3701 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3702 | .alg.skcipher = { | |
3703 | .base.cra_name = "ecb(des3_ede)", | |
3704 | .base.cra_driver_name = "ecb-des3-iproc", | |
3705 | .base.cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3706 | .min_keysize = DES3_EDE_KEY_SIZE, | |
3707 | .max_keysize = DES3_EDE_KEY_SIZE, | |
3708 | .ivsize = 0, | |
9d12ba86 RR |
3709 | }, |
3710 | .cipher_info = { | |
3711 | .alg = CIPHER_ALG_3DES, | |
3712 | .mode = CIPHER_MODE_ECB, | |
3713 | }, | |
3714 | .auth_info = { | |
3715 | .alg = HASH_ALG_NONE, | |
3716 | .mode = HASH_MODE_NONE, | |
3717 | }, | |
3718 | }, | |
3719 | { | |
a9c01cd6 AB |
3720 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3721 | .alg.skcipher = { | |
3722 | .base.cra_name = "ofb(aes)", | |
3723 | .base.cra_driver_name = "ofb-aes-iproc", | |
3724 | .base.cra_blocksize = AES_BLOCK_SIZE, | |
3725 | .min_keysize = AES_MIN_KEY_SIZE, | |
3726 | .max_keysize = AES_MAX_KEY_SIZE, | |
3727 | .ivsize = AES_BLOCK_SIZE, | |
9d12ba86 RR |
3728 | }, |
3729 | .cipher_info = { | |
3730 | .alg = CIPHER_ALG_AES, | |
3731 | .mode = CIPHER_MODE_OFB, | |
3732 | }, | |
3733 | .auth_info = { | |
3734 | .alg = HASH_ALG_NONE, | |
3735 | .mode = HASH_MODE_NONE, | |
3736 | }, | |
3737 | }, | |
3738 | { | |
a9c01cd6 AB |
3739 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3740 | .alg.skcipher = { | |
3741 | .base.cra_name = "cbc(aes)", | |
3742 | .base.cra_driver_name = "cbc-aes-iproc", | |
3743 | .base.cra_blocksize = AES_BLOCK_SIZE, | |
3744 | .min_keysize = AES_MIN_KEY_SIZE, | |
3745 | .max_keysize = AES_MAX_KEY_SIZE, | |
3746 | .ivsize = AES_BLOCK_SIZE, | |
9d12ba86 RR |
3747 | }, |
3748 | .cipher_info = { | |
3749 | .alg = CIPHER_ALG_AES, | |
3750 | .mode = CIPHER_MODE_CBC, | |
3751 | }, | |
3752 | .auth_info = { | |
3753 | .alg = HASH_ALG_NONE, | |
3754 | .mode = HASH_MODE_NONE, | |
3755 | }, | |
3756 | }, | |
3757 | { | |
a9c01cd6 AB |
3758 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3759 | .alg.skcipher = { | |
3760 | .base.cra_name = "ecb(aes)", | |
3761 | .base.cra_driver_name = "ecb-aes-iproc", | |
3762 | .base.cra_blocksize = AES_BLOCK_SIZE, | |
3763 | .min_keysize = AES_MIN_KEY_SIZE, | |
3764 | .max_keysize = AES_MAX_KEY_SIZE, | |
3765 | .ivsize = 0, | |
9d12ba86 RR |
3766 | }, |
3767 | .cipher_info = { | |
3768 | .alg = CIPHER_ALG_AES, | |
3769 | .mode = CIPHER_MODE_ECB, | |
3770 | }, | |
3771 | .auth_info = { | |
3772 | .alg = HASH_ALG_NONE, | |
3773 | .mode = HASH_MODE_NONE, | |
3774 | }, | |
3775 | }, | |
3776 | { | |
a9c01cd6 AB |
3777 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3778 | .alg.skcipher = { | |
3779 | .base.cra_name = "ctr(aes)", | |
3780 | .base.cra_driver_name = "ctr-aes-iproc", | |
3781 | .base.cra_blocksize = AES_BLOCK_SIZE, | |
3782 | .min_keysize = AES_MIN_KEY_SIZE, | |
3783 | .max_keysize = AES_MAX_KEY_SIZE, | |
3784 | .ivsize = AES_BLOCK_SIZE, | |
9d12ba86 RR |
3785 | }, |
3786 | .cipher_info = { | |
3787 | .alg = CIPHER_ALG_AES, | |
3788 | .mode = CIPHER_MODE_CTR, | |
3789 | }, | |
3790 | .auth_info = { | |
3791 | .alg = HASH_ALG_NONE, | |
3792 | .mode = HASH_MODE_NONE, | |
3793 | }, | |
3794 | }, | |
3795 | { | |
a9c01cd6 AB |
3796 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3797 | .alg.skcipher = { | |
3798 | .base.cra_name = "xts(aes)", | |
3799 | .base.cra_driver_name = "xts-aes-iproc", | |
3800 | .base.cra_blocksize = AES_BLOCK_SIZE, | |
3801 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
3802 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
3803 | .ivsize = AES_BLOCK_SIZE, | |
9d12ba86 RR |
3804 | }, |
3805 | .cipher_info = { | |
3806 | .alg = CIPHER_ALG_AES, | |
3807 | .mode = CIPHER_MODE_XTS, | |
3808 | }, | |
3809 | .auth_info = { | |
3810 | .alg = HASH_ALG_NONE, | |
3811 | .mode = HASH_MODE_NONE, | |
3812 | }, | |
3813 | }, | |
3814 | ||
3815 | /* AHASH algorithms. */ | |
3816 | { | |
3817 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3818 | .alg.hash = { | |
3819 | .halg.digestsize = MD5_DIGEST_SIZE, | |
3820 | .halg.base = { | |
3821 | .cra_name = "md5", | |
3822 | .cra_driver_name = "md5-iproc", | |
3823 | .cra_blocksize = MD5_BLOCK_WORDS * 4, | |
6a38f622 | 3824 | .cra_flags = CRYPTO_ALG_ASYNC, |
9d12ba86 RR |
3825 | } |
3826 | }, | |
3827 | .cipher_info = { | |
3828 | .alg = CIPHER_ALG_NONE, | |
3829 | .mode = CIPHER_MODE_NONE, | |
3830 | }, | |
3831 | .auth_info = { | |
3832 | .alg = HASH_ALG_MD5, | |
3833 | .mode = HASH_MODE_HASH, | |
3834 | }, | |
3835 | }, | |
3836 | { | |
3837 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3838 | .alg.hash = { | |
3839 | .halg.digestsize = MD5_DIGEST_SIZE, | |
3840 | .halg.base = { | |
3841 | .cra_name = "hmac(md5)", | |
3842 | .cra_driver_name = "hmac-md5-iproc", | |
3843 | .cra_blocksize = MD5_BLOCK_WORDS * 4, | |
3844 | } | |
3845 | }, | |
3846 | .cipher_info = { | |
3847 | .alg = CIPHER_ALG_NONE, | |
3848 | .mode = CIPHER_MODE_NONE, | |
3849 | }, | |
3850 | .auth_info = { | |
3851 | .alg = HASH_ALG_MD5, | |
3852 | .mode = HASH_MODE_HMAC, | |
3853 | }, | |
3854 | }, | |
3855 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3856 | .alg.hash = { | |
3857 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
3858 | .halg.base = { | |
3859 | .cra_name = "sha1", | |
3860 | .cra_driver_name = "sha1-iproc", | |
3861 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
3862 | } | |
3863 | }, | |
3864 | .cipher_info = { | |
3865 | .alg = CIPHER_ALG_NONE, | |
3866 | .mode = CIPHER_MODE_NONE, | |
3867 | }, | |
3868 | .auth_info = { | |
3869 | .alg = HASH_ALG_SHA1, | |
3870 | .mode = HASH_MODE_HASH, | |
3871 | }, | |
3872 | }, | |
3873 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3874 | .alg.hash = { | |
3875 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
3876 | .halg.base = { | |
3877 | .cra_name = "hmac(sha1)", | |
3878 | .cra_driver_name = "hmac-sha1-iproc", | |
3879 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
3880 | } | |
3881 | }, | |
3882 | .cipher_info = { | |
3883 | .alg = CIPHER_ALG_NONE, | |
3884 | .mode = CIPHER_MODE_NONE, | |
3885 | }, | |
3886 | .auth_info = { | |
3887 | .alg = HASH_ALG_SHA1, | |
3888 | .mode = HASH_MODE_HMAC, | |
3889 | }, | |
3890 | }, | |
3891 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3892 | .alg.hash = { | |
3893 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
3894 | .halg.base = { | |
3895 | .cra_name = "sha224", | |
3896 | .cra_driver_name = "sha224-iproc", | |
3897 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
3898 | } | |
3899 | }, | |
3900 | .cipher_info = { | |
3901 | .alg = CIPHER_ALG_NONE, | |
3902 | .mode = CIPHER_MODE_NONE, | |
3903 | }, | |
3904 | .auth_info = { | |
3905 | .alg = HASH_ALG_SHA224, | |
3906 | .mode = HASH_MODE_HASH, | |
3907 | }, | |
3908 | }, | |
3909 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3910 | .alg.hash = { | |
3911 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
3912 | .halg.base = { | |
3913 | .cra_name = "hmac(sha224)", | |
3914 | .cra_driver_name = "hmac-sha224-iproc", | |
3915 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
3916 | } | |
3917 | }, | |
3918 | .cipher_info = { | |
3919 | .alg = CIPHER_ALG_NONE, | |
3920 | .mode = CIPHER_MODE_NONE, | |
3921 | }, | |
3922 | .auth_info = { | |
3923 | .alg = HASH_ALG_SHA224, | |
3924 | .mode = HASH_MODE_HMAC, | |
3925 | }, | |
3926 | }, | |
3927 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3928 | .alg.hash = { | |
3929 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
3930 | .halg.base = { | |
3931 | .cra_name = "sha256", | |
3932 | .cra_driver_name = "sha256-iproc", | |
3933 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
3934 | } | |
3935 | }, | |
3936 | .cipher_info = { | |
3937 | .alg = CIPHER_ALG_NONE, | |
3938 | .mode = CIPHER_MODE_NONE, | |
3939 | }, | |
3940 | .auth_info = { | |
3941 | .alg = HASH_ALG_SHA256, | |
3942 | .mode = HASH_MODE_HASH, | |
3943 | }, | |
3944 | }, | |
3945 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3946 | .alg.hash = { | |
3947 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
3948 | .halg.base = { | |
3949 | .cra_name = "hmac(sha256)", | |
3950 | .cra_driver_name = "hmac-sha256-iproc", | |
3951 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
3952 | } | |
3953 | }, | |
3954 | .cipher_info = { | |
3955 | .alg = CIPHER_ALG_NONE, | |
3956 | .mode = CIPHER_MODE_NONE, | |
3957 | }, | |
3958 | .auth_info = { | |
3959 | .alg = HASH_ALG_SHA256, | |
3960 | .mode = HASH_MODE_HMAC, | |
3961 | }, | |
3962 | }, | |
3963 | { | |
3964 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3965 | .alg.hash = { | |
3966 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
3967 | .halg.base = { | |
3968 | .cra_name = "sha384", | |
3969 | .cra_driver_name = "sha384-iproc", | |
3970 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
3971 | } | |
3972 | }, | |
3973 | .cipher_info = { | |
3974 | .alg = CIPHER_ALG_NONE, | |
3975 | .mode = CIPHER_MODE_NONE, | |
3976 | }, | |
3977 | .auth_info = { | |
3978 | .alg = HASH_ALG_SHA384, | |
3979 | .mode = HASH_MODE_HASH, | |
3980 | }, | |
3981 | }, | |
3982 | { | |
3983 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3984 | .alg.hash = { | |
3985 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
3986 | .halg.base = { | |
3987 | .cra_name = "hmac(sha384)", | |
3988 | .cra_driver_name = "hmac-sha384-iproc", | |
3989 | .cra_blocksize = SHA384_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_SHA384, | |
3998 | .mode = HASH_MODE_HMAC, | |
3999 | }, | |
4000 | }, | |
4001 | { | |
4002 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4003 | .alg.hash = { | |
4004 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
4005 | .halg.base = { | |
4006 | .cra_name = "sha512", | |
4007 | .cra_driver_name = "sha512-iproc", | |
4008 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
4009 | } | |
4010 | }, | |
4011 | .cipher_info = { | |
4012 | .alg = CIPHER_ALG_NONE, | |
4013 | .mode = CIPHER_MODE_NONE, | |
4014 | }, | |
4015 | .auth_info = { | |
4016 | .alg = HASH_ALG_SHA512, | |
4017 | .mode = HASH_MODE_HASH, | |
4018 | }, | |
4019 | }, | |
4020 | { | |
4021 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4022 | .alg.hash = { | |
4023 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
4024 | .halg.base = { | |
4025 | .cra_name = "hmac(sha512)", | |
4026 | .cra_driver_name = "hmac-sha512-iproc", | |
4027 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
4028 | } | |
4029 | }, | |
4030 | .cipher_info = { | |
4031 | .alg = CIPHER_ALG_NONE, | |
4032 | .mode = CIPHER_MODE_NONE, | |
4033 | }, | |
4034 | .auth_info = { | |
4035 | .alg = HASH_ALG_SHA512, | |
4036 | .mode = HASH_MODE_HMAC, | |
4037 | }, | |
4038 | }, | |
4039 | { | |
4040 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4041 | .alg.hash = { | |
4042 | .halg.digestsize = SHA3_224_DIGEST_SIZE, | |
4043 | .halg.base = { | |
4044 | .cra_name = "sha3-224", | |
4045 | .cra_driver_name = "sha3-224-iproc", | |
4046 | .cra_blocksize = SHA3_224_BLOCK_SIZE, | |
4047 | } | |
4048 | }, | |
4049 | .cipher_info = { | |
4050 | .alg = CIPHER_ALG_NONE, | |
4051 | .mode = CIPHER_MODE_NONE, | |
4052 | }, | |
4053 | .auth_info = { | |
4054 | .alg = HASH_ALG_SHA3_224, | |
4055 | .mode = HASH_MODE_HASH, | |
4056 | }, | |
4057 | }, | |
4058 | { | |
4059 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4060 | .alg.hash = { | |
4061 | .halg.digestsize = SHA3_224_DIGEST_SIZE, | |
4062 | .halg.base = { | |
4063 | .cra_name = "hmac(sha3-224)", | |
4064 | .cra_driver_name = "hmac-sha3-224-iproc", | |
4065 | .cra_blocksize = SHA3_224_BLOCK_SIZE, | |
4066 | } | |
4067 | }, | |
4068 | .cipher_info = { | |
4069 | .alg = CIPHER_ALG_NONE, | |
4070 | .mode = CIPHER_MODE_NONE, | |
4071 | }, | |
4072 | .auth_info = { | |
4073 | .alg = HASH_ALG_SHA3_224, | |
4074 | .mode = HASH_MODE_HMAC | |
4075 | }, | |
4076 | }, | |
4077 | { | |
4078 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4079 | .alg.hash = { | |
4080 | .halg.digestsize = SHA3_256_DIGEST_SIZE, | |
4081 | .halg.base = { | |
4082 | .cra_name = "sha3-256", | |
4083 | .cra_driver_name = "sha3-256-iproc", | |
4084 | .cra_blocksize = SHA3_256_BLOCK_SIZE, | |
4085 | } | |
4086 | }, | |
4087 | .cipher_info = { | |
4088 | .alg = CIPHER_ALG_NONE, | |
4089 | .mode = CIPHER_MODE_NONE, | |
4090 | }, | |
4091 | .auth_info = { | |
4092 | .alg = HASH_ALG_SHA3_256, | |
4093 | .mode = HASH_MODE_HASH, | |
4094 | }, | |
4095 | }, | |
4096 | { | |
4097 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4098 | .alg.hash = { | |
4099 | .halg.digestsize = SHA3_256_DIGEST_SIZE, | |
4100 | .halg.base = { | |
4101 | .cra_name = "hmac(sha3-256)", | |
4102 | .cra_driver_name = "hmac-sha3-256-iproc", | |
4103 | .cra_blocksize = SHA3_256_BLOCK_SIZE, | |
4104 | } | |
4105 | }, | |
4106 | .cipher_info = { | |
4107 | .alg = CIPHER_ALG_NONE, | |
4108 | .mode = CIPHER_MODE_NONE, | |
4109 | }, | |
4110 | .auth_info = { | |
4111 | .alg = HASH_ALG_SHA3_256, | |
4112 | .mode = HASH_MODE_HMAC, | |
4113 | }, | |
4114 | }, | |
4115 | { | |
4116 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4117 | .alg.hash = { | |
4118 | .halg.digestsize = SHA3_384_DIGEST_SIZE, | |
4119 | .halg.base = { | |
4120 | .cra_name = "sha3-384", | |
4121 | .cra_driver_name = "sha3-384-iproc", | |
4122 | .cra_blocksize = SHA3_224_BLOCK_SIZE, | |
4123 | } | |
4124 | }, | |
4125 | .cipher_info = { | |
4126 | .alg = CIPHER_ALG_NONE, | |
4127 | .mode = CIPHER_MODE_NONE, | |
4128 | }, | |
4129 | .auth_info = { | |
4130 | .alg = HASH_ALG_SHA3_384, | |
4131 | .mode = HASH_MODE_HASH, | |
4132 | }, | |
4133 | }, | |
4134 | { | |
4135 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4136 | .alg.hash = { | |
4137 | .halg.digestsize = SHA3_384_DIGEST_SIZE, | |
4138 | .halg.base = { | |
4139 | .cra_name = "hmac(sha3-384)", | |
4140 | .cra_driver_name = "hmac-sha3-384-iproc", | |
4141 | .cra_blocksize = SHA3_384_BLOCK_SIZE, | |
4142 | } | |
4143 | }, | |
4144 | .cipher_info = { | |
4145 | .alg = CIPHER_ALG_NONE, | |
4146 | .mode = CIPHER_MODE_NONE, | |
4147 | }, | |
4148 | .auth_info = { | |
4149 | .alg = HASH_ALG_SHA3_384, | |
4150 | .mode = HASH_MODE_HMAC, | |
4151 | }, | |
4152 | }, | |
4153 | { | |
4154 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4155 | .alg.hash = { | |
4156 | .halg.digestsize = SHA3_512_DIGEST_SIZE, | |
4157 | .halg.base = { | |
4158 | .cra_name = "sha3-512", | |
4159 | .cra_driver_name = "sha3-512-iproc", | |
4160 | .cra_blocksize = SHA3_512_BLOCK_SIZE, | |
4161 | } | |
4162 | }, | |
4163 | .cipher_info = { | |
4164 | .alg = CIPHER_ALG_NONE, | |
4165 | .mode = CIPHER_MODE_NONE, | |
4166 | }, | |
4167 | .auth_info = { | |
4168 | .alg = HASH_ALG_SHA3_512, | |
4169 | .mode = HASH_MODE_HASH, | |
4170 | }, | |
4171 | }, | |
4172 | { | |
4173 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4174 | .alg.hash = { | |
4175 | .halg.digestsize = SHA3_512_DIGEST_SIZE, | |
4176 | .halg.base = { | |
4177 | .cra_name = "hmac(sha3-512)", | |
4178 | .cra_driver_name = "hmac-sha3-512-iproc", | |
4179 | .cra_blocksize = SHA3_512_BLOCK_SIZE, | |
4180 | } | |
4181 | }, | |
4182 | .cipher_info = { | |
4183 | .alg = CIPHER_ALG_NONE, | |
4184 | .mode = CIPHER_MODE_NONE, | |
4185 | }, | |
4186 | .auth_info = { | |
4187 | .alg = HASH_ALG_SHA3_512, | |
4188 | .mode = HASH_MODE_HMAC, | |
4189 | }, | |
4190 | }, | |
4191 | { | |
4192 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4193 | .alg.hash = { | |
4194 | .halg.digestsize = AES_BLOCK_SIZE, | |
4195 | .halg.base = { | |
4196 | .cra_name = "xcbc(aes)", | |
4197 | .cra_driver_name = "xcbc-aes-iproc", | |
4198 | .cra_blocksize = AES_BLOCK_SIZE, | |
4199 | } | |
4200 | }, | |
4201 | .cipher_info = { | |
4202 | .alg = CIPHER_ALG_NONE, | |
4203 | .mode = CIPHER_MODE_NONE, | |
4204 | }, | |
4205 | .auth_info = { | |
4206 | .alg = HASH_ALG_AES, | |
4207 | .mode = HASH_MODE_XCBC, | |
4208 | }, | |
4209 | }, | |
4210 | { | |
4211 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4212 | .alg.hash = { | |
4213 | .halg.digestsize = AES_BLOCK_SIZE, | |
4214 | .halg.base = { | |
4215 | .cra_name = "cmac(aes)", | |
4216 | .cra_driver_name = "cmac-aes-iproc", | |
4217 | .cra_blocksize = AES_BLOCK_SIZE, | |
4218 | } | |
4219 | }, | |
4220 | .cipher_info = { | |
4221 | .alg = CIPHER_ALG_NONE, | |
4222 | .mode = CIPHER_MODE_NONE, | |
4223 | }, | |
4224 | .auth_info = { | |
4225 | .alg = HASH_ALG_AES, | |
4226 | .mode = HASH_MODE_CMAC, | |
4227 | }, | |
4228 | }, | |
4229 | }; | |
4230 | ||
4231 | static int generic_cra_init(struct crypto_tfm *tfm, | |
4232 | struct iproc_alg_s *cipher_alg) | |
4233 | { | |
4234 | struct spu_hw *spu = &iproc_priv.spu; | |
4235 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
4236 | unsigned int blocksize = crypto_tfm_alg_blocksize(tfm); | |
4237 | ||
4238 | flow_log("%s()\n", __func__); | |
4239 | ||
4240 | ctx->alg = cipher_alg; | |
4241 | ctx->cipher = cipher_alg->cipher_info; | |
4242 | ctx->auth = cipher_alg->auth_info; | |
4243 | ctx->auth_first = cipher_alg->auth_first; | |
4244 | ctx->max_payload = spu->spu_ctx_max_payload(ctx->cipher.alg, | |
4245 | ctx->cipher.mode, | |
4246 | blocksize); | |
4247 | ctx->fallback_cipher = NULL; | |
4248 | ||
4249 | ctx->enckeylen = 0; | |
4250 | ctx->authkeylen = 0; | |
4251 | ||
4252 | atomic_inc(&iproc_priv.stream_count); | |
4253 | atomic_inc(&iproc_priv.session_count); | |
4254 | ||
4255 | return 0; | |
4256 | } | |
4257 | ||
a9c01cd6 | 4258 | static int skcipher_init_tfm(struct crypto_skcipher *skcipher) |
9d12ba86 | 4259 | { |
a9c01cd6 AB |
4260 | struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher); |
4261 | struct skcipher_alg *alg = crypto_skcipher_alg(skcipher); | |
9d12ba86 RR |
4262 | struct iproc_alg_s *cipher_alg; |
4263 | ||
4264 | flow_log("%s()\n", __func__); | |
4265 | ||
a9c01cd6 | 4266 | crypto_skcipher_set_reqsize(skcipher, sizeof(struct iproc_reqctx_s)); |
9d12ba86 | 4267 | |
a9c01cd6 | 4268 | cipher_alg = container_of(alg, struct iproc_alg_s, alg.skcipher); |
9d12ba86 RR |
4269 | return generic_cra_init(tfm, cipher_alg); |
4270 | } | |
4271 | ||
4272 | static int ahash_cra_init(struct crypto_tfm *tfm) | |
4273 | { | |
4274 | int err; | |
4275 | struct crypto_alg *alg = tfm->__crt_alg; | |
4276 | struct iproc_alg_s *cipher_alg; | |
4277 | ||
4278 | cipher_alg = container_of(__crypto_ahash_alg(alg), struct iproc_alg_s, | |
4279 | alg.hash); | |
4280 | ||
4281 | err = generic_cra_init(tfm, cipher_alg); | |
4282 | flow_log("%s()\n", __func__); | |
4283 | ||
4284 | /* | |
4285 | * export state size has to be < 512 bytes. So don't include msg bufs | |
4286 | * in state size. | |
4287 | */ | |
4288 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), | |
4289 | sizeof(struct iproc_reqctx_s)); | |
4290 | ||
4291 | return err; | |
4292 | } | |
4293 | ||
4294 | static int aead_cra_init(struct crypto_aead *aead) | |
4295 | { | |
4296 | struct crypto_tfm *tfm = crypto_aead_tfm(aead); | |
4297 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
4298 | struct crypto_alg *alg = tfm->__crt_alg; | |
4299 | struct aead_alg *aalg = container_of(alg, struct aead_alg, base); | |
4300 | struct iproc_alg_s *cipher_alg = container_of(aalg, struct iproc_alg_s, | |
4301 | alg.aead); | |
4302 | ||
4303 | int err = generic_cra_init(tfm, cipher_alg); | |
4304 | ||
4305 | flow_log("%s()\n", __func__); | |
4306 | ||
4307 | crypto_aead_set_reqsize(aead, sizeof(struct iproc_reqctx_s)); | |
4308 | ctx->is_esp = false; | |
4309 | ctx->salt_len = 0; | |
4310 | ctx->salt_offset = 0; | |
4311 | ||
4312 | /* random first IV */ | |
4313 | get_random_bytes(ctx->iv, MAX_IV_SIZE); | |
4314 | flow_dump(" iv: ", ctx->iv, MAX_IV_SIZE); | |
4315 | ||
4316 | if (!err) { | |
4317 | if (alg->cra_flags & CRYPTO_ALG_NEED_FALLBACK) { | |
4318 | flow_log("%s() creating fallback cipher\n", __func__); | |
4319 | ||
4320 | ctx->fallback_cipher = | |
4321 | crypto_alloc_aead(alg->cra_name, 0, | |
4322 | CRYPTO_ALG_ASYNC | | |
4323 | CRYPTO_ALG_NEED_FALLBACK); | |
4324 | if (IS_ERR(ctx->fallback_cipher)) { | |
4325 | pr_err("%s() Error: failed to allocate fallback for %s\n", | |
4326 | __func__, alg->cra_name); | |
4327 | return PTR_ERR(ctx->fallback_cipher); | |
4328 | } | |
4329 | } | |
4330 | } | |
4331 | ||
4332 | return err; | |
4333 | } | |
4334 | ||
4335 | static void generic_cra_exit(struct crypto_tfm *tfm) | |
4336 | { | |
4337 | atomic_dec(&iproc_priv.session_count); | |
4338 | } | |
4339 | ||
a9c01cd6 AB |
4340 | static void skcipher_exit_tfm(struct crypto_skcipher *tfm) |
4341 | { | |
4342 | generic_cra_exit(crypto_skcipher_tfm(tfm)); | |
4343 | } | |
4344 | ||
9d12ba86 RR |
4345 | static void aead_cra_exit(struct crypto_aead *aead) |
4346 | { | |
4347 | struct crypto_tfm *tfm = crypto_aead_tfm(aead); | |
4348 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
4349 | ||
4350 | generic_cra_exit(tfm); | |
4351 | ||
4352 | if (ctx->fallback_cipher) { | |
4353 | crypto_free_aead(ctx->fallback_cipher); | |
4354 | ctx->fallback_cipher = NULL; | |
4355 | } | |
4356 | } | |
4357 | ||
4358 | /** | |
4359 | * spu_functions_register() - Specify hardware-specific SPU functions based on | |
4360 | * SPU type read from device tree. | |
4361 | * @dev: device structure | |
4362 | * @spu_type: SPU hardware generation | |
4363 | * @spu_subtype: SPU hardware version | |
4364 | */ | |
4365 | static void spu_functions_register(struct device *dev, | |
4366 | enum spu_spu_type spu_type, | |
4367 | enum spu_spu_subtype spu_subtype) | |
4368 | { | |
4369 | struct spu_hw *spu = &iproc_priv.spu; | |
4370 | ||
4371 | if (spu_type == SPU_TYPE_SPUM) { | |
4372 | dev_dbg(dev, "Registering SPUM functions"); | |
4373 | spu->spu_dump_msg_hdr = spum_dump_msg_hdr; | |
4374 | spu->spu_payload_length = spum_payload_length; | |
4375 | spu->spu_response_hdr_len = spum_response_hdr_len; | |
4376 | spu->spu_hash_pad_len = spum_hash_pad_len; | |
4377 | spu->spu_gcm_ccm_pad_len = spum_gcm_ccm_pad_len; | |
4378 | spu->spu_assoc_resp_len = spum_assoc_resp_len; | |
4379 | spu->spu_aead_ivlen = spum_aead_ivlen; | |
4380 | spu->spu_hash_type = spum_hash_type; | |
4381 | spu->spu_digest_size = spum_digest_size; | |
4382 | spu->spu_create_request = spum_create_request; | |
4383 | spu->spu_cipher_req_init = spum_cipher_req_init; | |
4384 | spu->spu_cipher_req_finish = spum_cipher_req_finish; | |
4385 | spu->spu_request_pad = spum_request_pad; | |
4386 | spu->spu_tx_status_len = spum_tx_status_len; | |
4387 | spu->spu_rx_status_len = spum_rx_status_len; | |
4388 | spu->spu_status_process = spum_status_process; | |
4389 | spu->spu_xts_tweak_in_payload = spum_xts_tweak_in_payload; | |
4390 | spu->spu_ccm_update_iv = spum_ccm_update_iv; | |
4391 | spu->spu_wordalign_padlen = spum_wordalign_padlen; | |
4392 | if (spu_subtype == SPU_SUBTYPE_SPUM_NS2) | |
4393 | spu->spu_ctx_max_payload = spum_ns2_ctx_max_payload; | |
4394 | else | |
4395 | spu->spu_ctx_max_payload = spum_nsp_ctx_max_payload; | |
4396 | } else { | |
4397 | dev_dbg(dev, "Registering SPU2 functions"); | |
4398 | spu->spu_dump_msg_hdr = spu2_dump_msg_hdr; | |
4399 | spu->spu_ctx_max_payload = spu2_ctx_max_payload; | |
4400 | spu->spu_payload_length = spu2_payload_length; | |
4401 | spu->spu_response_hdr_len = spu2_response_hdr_len; | |
4402 | spu->spu_hash_pad_len = spu2_hash_pad_len; | |
4403 | spu->spu_gcm_ccm_pad_len = spu2_gcm_ccm_pad_len; | |
4404 | spu->spu_assoc_resp_len = spu2_assoc_resp_len; | |
4405 | spu->spu_aead_ivlen = spu2_aead_ivlen; | |
4406 | spu->spu_hash_type = spu2_hash_type; | |
4407 | spu->spu_digest_size = spu2_digest_size; | |
4408 | spu->spu_create_request = spu2_create_request; | |
4409 | spu->spu_cipher_req_init = spu2_cipher_req_init; | |
4410 | spu->spu_cipher_req_finish = spu2_cipher_req_finish; | |
4411 | spu->spu_request_pad = spu2_request_pad; | |
4412 | spu->spu_tx_status_len = spu2_tx_status_len; | |
4413 | spu->spu_rx_status_len = spu2_rx_status_len; | |
4414 | spu->spu_status_process = spu2_status_process; | |
4415 | spu->spu_xts_tweak_in_payload = spu2_xts_tweak_in_payload; | |
4416 | spu->spu_ccm_update_iv = spu2_ccm_update_iv; | |
4417 | spu->spu_wordalign_padlen = spu2_wordalign_padlen; | |
4418 | } | |
4419 | } | |
4420 | ||
4421 | /** | |
4422 | * spu_mb_init() - Initialize mailbox client. Request ownership of a mailbox | |
4423 | * channel for the SPU being probed. | |
4424 | * @dev: SPU driver device structure | |
4425 | * | |
4426 | * Return: 0 if successful | |
4427 | * < 0 otherwise | |
4428 | */ | |
4429 | static int spu_mb_init(struct device *dev) | |
4430 | { | |
9166c443 | 4431 | struct mbox_client *mcl = &iproc_priv.mcl; |
4432 | int err, i; | |
4433 | ||
4434 | iproc_priv.mbox = devm_kcalloc(dev, iproc_priv.spu.num_chan, | |
4435 | sizeof(struct mbox_chan *), GFP_KERNEL); | |
4436 | if (!iproc_priv.mbox) | |
4437 | return -ENOMEM; | |
9d12ba86 RR |
4438 | |
4439 | mcl->dev = dev; | |
4440 | mcl->tx_block = false; | |
4441 | mcl->tx_tout = 0; | |
f0e2ce58 | 4442 | mcl->knows_txdone = true; |
9d12ba86 RR |
4443 | mcl->rx_callback = spu_rx_callback; |
4444 | mcl->tx_done = NULL; | |
4445 | ||
9166c443 | 4446 | for (i = 0; i < iproc_priv.spu.num_chan; i++) { |
4447 | iproc_priv.mbox[i] = mbox_request_channel(mcl, i); | |
4448 | if (IS_ERR(iproc_priv.mbox[i])) { | |
4449 | err = (int)PTR_ERR(iproc_priv.mbox[i]); | |
4450 | dev_err(dev, | |
4451 | "Mbox channel %d request failed with err %d", | |
4452 | i, err); | |
4453 | iproc_priv.mbox[i] = NULL; | |
4454 | goto free_channels; | |
4455 | } | |
9d12ba86 RR |
4456 | } |
4457 | ||
4458 | return 0; | |
9166c443 | 4459 | free_channels: |
4460 | for (i = 0; i < iproc_priv.spu.num_chan; i++) { | |
4461 | if (iproc_priv.mbox[i]) | |
4462 | mbox_free_channel(iproc_priv.mbox[i]); | |
4463 | } | |
4464 | ||
4465 | return err; | |
9d12ba86 RR |
4466 | } |
4467 | ||
4468 | static void spu_mb_release(struct platform_device *pdev) | |
4469 | { | |
4470 | int i; | |
4471 | ||
9166c443 | 4472 | for (i = 0; i < iproc_priv.spu.num_chan; i++) |
9d12ba86 RR |
4473 | mbox_free_channel(iproc_priv.mbox[i]); |
4474 | } | |
4475 | ||
4476 | static void spu_counters_init(void) | |
4477 | { | |
4478 | int i; | |
4479 | int j; | |
4480 | ||
4481 | atomic_set(&iproc_priv.session_count, 0); | |
4482 | atomic_set(&iproc_priv.stream_count, 0); | |
9166c443 | 4483 | atomic_set(&iproc_priv.next_chan, (int)iproc_priv.spu.num_chan); |
9d12ba86 RR |
4484 | atomic64_set(&iproc_priv.bytes_in, 0); |
4485 | atomic64_set(&iproc_priv.bytes_out, 0); | |
4486 | for (i = 0; i < SPU_OP_NUM; i++) { | |
4487 | atomic_set(&iproc_priv.op_counts[i], 0); | |
4488 | atomic_set(&iproc_priv.setkey_cnt[i], 0); | |
4489 | } | |
4490 | for (i = 0; i < CIPHER_ALG_LAST; i++) | |
4491 | for (j = 0; j < CIPHER_MODE_LAST; j++) | |
4492 | atomic_set(&iproc_priv.cipher_cnt[i][j], 0); | |
4493 | ||
4494 | for (i = 0; i < HASH_ALG_LAST; i++) { | |
4495 | atomic_set(&iproc_priv.hash_cnt[i], 0); | |
4496 | atomic_set(&iproc_priv.hmac_cnt[i], 0); | |
4497 | } | |
4498 | for (i = 0; i < AEAD_TYPE_LAST; i++) | |
4499 | atomic_set(&iproc_priv.aead_cnt[i], 0); | |
4500 | ||
4501 | atomic_set(&iproc_priv.mb_no_spc, 0); | |
4502 | atomic_set(&iproc_priv.mb_send_fail, 0); | |
4503 | atomic_set(&iproc_priv.bad_icv, 0); | |
4504 | } | |
4505 | ||
a9c01cd6 | 4506 | static int spu_register_skcipher(struct iproc_alg_s *driver_alg) |
9d12ba86 RR |
4507 | { |
4508 | struct spu_hw *spu = &iproc_priv.spu; | |
a9c01cd6 | 4509 | struct skcipher_alg *crypto = &driver_alg->alg.skcipher; |
9d12ba86 RR |
4510 | int err; |
4511 | ||
4512 | /* SPU2 does not support RC4 */ | |
4513 | if ((driver_alg->cipher_info.alg == CIPHER_ALG_RC4) && | |
4514 | (spu->spu_type == SPU_TYPE_SPU2)) | |
4515 | return 0; | |
4516 | ||
a9c01cd6 AB |
4517 | crypto->base.cra_module = THIS_MODULE; |
4518 | crypto->base.cra_priority = cipher_pri; | |
4519 | crypto->base.cra_alignmask = 0; | |
4520 | crypto->base.cra_ctxsize = sizeof(struct iproc_ctx_s); | |
4521 | crypto->base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY; | |
9d12ba86 | 4522 | |
a9c01cd6 AB |
4523 | crypto->init = skcipher_init_tfm; |
4524 | crypto->exit = skcipher_exit_tfm; | |
4525 | crypto->setkey = skcipher_setkey; | |
4526 | crypto->encrypt = skcipher_encrypt; | |
4527 | crypto->decrypt = skcipher_decrypt; | |
9d12ba86 | 4528 | |
a9c01cd6 | 4529 | err = crypto_register_skcipher(crypto); |
9d12ba86 RR |
4530 | /* Mark alg as having been registered, if successful */ |
4531 | if (err == 0) | |
4532 | driver_alg->registered = true; | |
a9c01cd6 | 4533 | pr_debug(" registered skcipher %s\n", crypto->base.cra_driver_name); |
9d12ba86 RR |
4534 | return err; |
4535 | } | |
4536 | ||
4537 | static int spu_register_ahash(struct iproc_alg_s *driver_alg) | |
4538 | { | |
4539 | struct spu_hw *spu = &iproc_priv.spu; | |
4540 | struct ahash_alg *hash = &driver_alg->alg.hash; | |
4541 | int err; | |
4542 | ||
4543 | /* AES-XCBC is the only AES hash type currently supported on SPU-M */ | |
4544 | if ((driver_alg->auth_info.alg == HASH_ALG_AES) && | |
4545 | (driver_alg->auth_info.mode != HASH_MODE_XCBC) && | |
4546 | (spu->spu_type == SPU_TYPE_SPUM)) | |
4547 | return 0; | |
4548 | ||
4549 | /* SHA3 algorithm variants are not registered for SPU-M or SPU2. */ | |
4550 | if ((driver_alg->auth_info.alg >= HASH_ALG_SHA3_224) && | |
4551 | (spu->spu_subtype != SPU_SUBTYPE_SPU2_V2)) | |
4552 | return 0; | |
4553 | ||
4554 | hash->halg.base.cra_module = THIS_MODULE; | |
4555 | hash->halg.base.cra_priority = hash_pri; | |
4556 | hash->halg.base.cra_alignmask = 0; | |
4557 | hash->halg.base.cra_ctxsize = sizeof(struct iproc_ctx_s); | |
4558 | hash->halg.base.cra_init = ahash_cra_init; | |
4559 | hash->halg.base.cra_exit = generic_cra_exit; | |
6a38f622 | 4560 | hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC; |
9d12ba86 RR |
4561 | hash->halg.statesize = sizeof(struct spu_hash_export_s); |
4562 | ||
4563 | if (driver_alg->auth_info.mode != HASH_MODE_HMAC) { | |
9d12ba86 RR |
4564 | hash->init = ahash_init; |
4565 | hash->update = ahash_update; | |
4566 | hash->final = ahash_final; | |
4567 | hash->finup = ahash_finup; | |
4568 | hash->digest = ahash_digest; | |
4f0129d1 RP |
4569 | if ((driver_alg->auth_info.alg == HASH_ALG_AES) && |
4570 | ((driver_alg->auth_info.mode == HASH_MODE_XCBC) || | |
4571 | (driver_alg->auth_info.mode == HASH_MODE_CMAC))) { | |
4572 | hash->setkey = ahash_setkey; | |
4573 | } | |
9d12ba86 RR |
4574 | } else { |
4575 | hash->setkey = ahash_hmac_setkey; | |
4576 | hash->init = ahash_hmac_init; | |
4577 | hash->update = ahash_hmac_update; | |
4578 | hash->final = ahash_hmac_final; | |
4579 | hash->finup = ahash_hmac_finup; | |
4580 | hash->digest = ahash_hmac_digest; | |
4581 | } | |
4582 | hash->export = ahash_export; | |
4583 | hash->import = ahash_import; | |
4584 | ||
4585 | err = crypto_register_ahash(hash); | |
4586 | /* Mark alg as having been registered, if successful */ | |
4587 | if (err == 0) | |
4588 | driver_alg->registered = true; | |
4589 | pr_debug(" registered ahash %s\n", | |
4590 | hash->halg.base.cra_driver_name); | |
4591 | return err; | |
4592 | } | |
4593 | ||
4594 | static int spu_register_aead(struct iproc_alg_s *driver_alg) | |
4595 | { | |
4596 | struct aead_alg *aead = &driver_alg->alg.aead; | |
4597 | int err; | |
4598 | ||
4599 | aead->base.cra_module = THIS_MODULE; | |
4600 | aead->base.cra_priority = aead_pri; | |
4601 | aead->base.cra_alignmask = 0; | |
4602 | aead->base.cra_ctxsize = sizeof(struct iproc_ctx_s); | |
9d12ba86 | 4603 | |
3f4a537a | 4604 | aead->base.cra_flags |= CRYPTO_ALG_ASYNC; |
9d12ba86 RR |
4605 | /* setkey set in alg initialization */ |
4606 | aead->setauthsize = aead_setauthsize; | |
4607 | aead->encrypt = aead_encrypt; | |
4608 | aead->decrypt = aead_decrypt; | |
4609 | aead->init = aead_cra_init; | |
4610 | aead->exit = aead_cra_exit; | |
4611 | ||
4612 | err = crypto_register_aead(aead); | |
4613 | /* Mark alg as having been registered, if successful */ | |
4614 | if (err == 0) | |
4615 | driver_alg->registered = true; | |
4616 | pr_debug(" registered aead %s\n", aead->base.cra_driver_name); | |
4617 | return err; | |
4618 | } | |
4619 | ||
4620 | /* register crypto algorithms the device supports */ | |
4621 | static int spu_algs_register(struct device *dev) | |
4622 | { | |
4623 | int i, j; | |
4624 | int err; | |
4625 | ||
4626 | for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { | |
4627 | switch (driver_algs[i].type) { | |
a9c01cd6 AB |
4628 | case CRYPTO_ALG_TYPE_SKCIPHER: |
4629 | err = spu_register_skcipher(&driver_algs[i]); | |
9d12ba86 RR |
4630 | break; |
4631 | case CRYPTO_ALG_TYPE_AHASH: | |
4632 | err = spu_register_ahash(&driver_algs[i]); | |
4633 | break; | |
4634 | case CRYPTO_ALG_TYPE_AEAD: | |
4635 | err = spu_register_aead(&driver_algs[i]); | |
4636 | break; | |
4637 | default: | |
4638 | dev_err(dev, | |
4639 | "iproc-crypto: unknown alg type: %d", | |
4640 | driver_algs[i].type); | |
4641 | err = -EINVAL; | |
4642 | } | |
4643 | ||
4644 | if (err) { | |
4645 | dev_err(dev, "alg registration failed with error %d\n", | |
4646 | err); | |
4647 | goto err_algs; | |
4648 | } | |
4649 | } | |
4650 | ||
4651 | return 0; | |
4652 | ||
4653 | err_algs: | |
4654 | for (j = 0; j < i; j++) { | |
4655 | /* Skip any algorithm not registered */ | |
4656 | if (!driver_algs[j].registered) | |
4657 | continue; | |
4658 | switch (driver_algs[j].type) { | |
a9c01cd6 AB |
4659 | case CRYPTO_ALG_TYPE_SKCIPHER: |
4660 | crypto_unregister_skcipher(&driver_algs[j].alg.skcipher); | |
9d12ba86 RR |
4661 | driver_algs[j].registered = false; |
4662 | break; | |
4663 | case CRYPTO_ALG_TYPE_AHASH: | |
4664 | crypto_unregister_ahash(&driver_algs[j].alg.hash); | |
4665 | driver_algs[j].registered = false; | |
4666 | break; | |
4667 | case CRYPTO_ALG_TYPE_AEAD: | |
4668 | crypto_unregister_aead(&driver_algs[j].alg.aead); | |
4669 | driver_algs[j].registered = false; | |
4670 | break; | |
4671 | } | |
4672 | } | |
4673 | return err; | |
4674 | } | |
4675 | ||
4676 | /* ==================== Kernel Platform API ==================== */ | |
4677 | ||
4678 | static struct spu_type_subtype spum_ns2_types = { | |
4679 | SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NS2 | |
4680 | }; | |
4681 | ||
4682 | static struct spu_type_subtype spum_nsp_types = { | |
4683 | SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NSP | |
4684 | }; | |
4685 | ||
4686 | static struct spu_type_subtype spu2_types = { | |
4687 | SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V1 | |
4688 | }; | |
4689 | ||
4690 | static struct spu_type_subtype spu2_v2_types = { | |
4691 | SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V2 | |
4692 | }; | |
4693 | ||
4694 | static const struct of_device_id bcm_spu_dt_ids[] = { | |
4695 | { | |
4696 | .compatible = "brcm,spum-crypto", | |
4697 | .data = &spum_ns2_types, | |
4698 | }, | |
4699 | { | |
4700 | .compatible = "brcm,spum-nsp-crypto", | |
4701 | .data = &spum_nsp_types, | |
4702 | }, | |
4703 | { | |
4704 | .compatible = "brcm,spu2-crypto", | |
4705 | .data = &spu2_types, | |
4706 | }, | |
4707 | { | |
4708 | .compatible = "brcm,spu2-v2-crypto", | |
4709 | .data = &spu2_v2_types, | |
4710 | }, | |
4711 | { /* sentinel */ } | |
4712 | }; | |
4713 | ||
4714 | MODULE_DEVICE_TABLE(of, bcm_spu_dt_ids); | |
4715 | ||
4716 | static int spu_dt_read(struct platform_device *pdev) | |
4717 | { | |
4718 | struct device *dev = &pdev->dev; | |
4719 | struct spu_hw *spu = &iproc_priv.spu; | |
4720 | struct resource *spu_ctrl_regs; | |
9d12ba86 | 4721 | const struct spu_type_subtype *matched_spu_type; |
9166c443 | 4722 | struct device_node *dn = pdev->dev.of_node; |
4723 | int err, i; | |
4724 | ||
4725 | /* Count number of mailbox channels */ | |
4726 | spu->num_chan = of_count_phandle_with_args(dn, "mboxes", "#mbox-cells"); | |
9d12ba86 | 4727 | |
d9fa482e CL |
4728 | matched_spu_type = of_device_get_match_data(dev); |
4729 | if (!matched_spu_type) { | |
c6090480 GS |
4730 | dev_err(&pdev->dev, "Failed to match device\n"); |
4731 | return -ENODEV; | |
4732 | } | |
4733 | ||
9166c443 | 4734 | spu->spu_type = matched_spu_type->type; |
4735 | spu->spu_subtype = matched_spu_type->subtype; | |
9d12ba86 | 4736 | |
9166c443 | 4737 | i = 0; |
4738 | for (i = 0; (i < MAX_SPUS) && ((spu_ctrl_regs = | |
4739 | platform_get_resource(pdev, IORESOURCE_MEM, i)) != NULL); i++) { | |
9d12ba86 | 4740 | |
9166c443 | 4741 | spu->reg_vbase[i] = devm_ioremap_resource(dev, spu_ctrl_regs); |
4742 | if (IS_ERR(spu->reg_vbase[i])) { | |
4743 | err = PTR_ERR(spu->reg_vbase[i]); | |
4744 | dev_err(&pdev->dev, "Failed to map registers: %d\n", | |
4745 | err); | |
4746 | spu->reg_vbase[i] = NULL; | |
4747 | return err; | |
4748 | } | |
9d12ba86 | 4749 | } |
9166c443 | 4750 | spu->num_spu = i; |
4751 | dev_dbg(dev, "Device has %d SPUs", spu->num_spu); | |
9d12ba86 RR |
4752 | |
4753 | return 0; | |
4754 | } | |
4755 | ||
dd508618 | 4756 | static int bcm_spu_probe(struct platform_device *pdev) |
9d12ba86 RR |
4757 | { |
4758 | struct device *dev = &pdev->dev; | |
4759 | struct spu_hw *spu = &iproc_priv.spu; | |
4760 | int err = 0; | |
4761 | ||
9166c443 | 4762 | iproc_priv.pdev = pdev; |
4763 | platform_set_drvdata(iproc_priv.pdev, | |
9d12ba86 RR |
4764 | &iproc_priv); |
4765 | ||
4766 | err = spu_dt_read(pdev); | |
4767 | if (err < 0) | |
4768 | goto failure; | |
4769 | ||
4770 | err = spu_mb_init(&pdev->dev); | |
4771 | if (err < 0) | |
4772 | goto failure; | |
4773 | ||
9d12ba86 RR |
4774 | if (spu->spu_type == SPU_TYPE_SPUM) |
4775 | iproc_priv.bcm_hdr_len = 8; | |
4776 | else if (spu->spu_type == SPU_TYPE_SPU2) | |
4777 | iproc_priv.bcm_hdr_len = 0; | |
4778 | ||
4779 | spu_functions_register(&pdev->dev, spu->spu_type, spu->spu_subtype); | |
4780 | ||
4781 | spu_counters_init(); | |
4782 | ||
4783 | spu_setup_debugfs(); | |
4784 | ||
4785 | err = spu_algs_register(dev); | |
4786 | if (err < 0) | |
4787 | goto fail_reg; | |
4788 | ||
9d12ba86 RR |
4789 | return 0; |
4790 | ||
4791 | fail_reg: | |
4792 | spu_free_debugfs(); | |
4793 | failure: | |
4794 | spu_mb_release(pdev); | |
4795 | dev_err(dev, "%s failed with error %d.\n", __func__, err); | |
4796 | ||
4797 | return err; | |
4798 | } | |
4799 | ||
dd508618 | 4800 | static int bcm_spu_remove(struct platform_device *pdev) |
9d12ba86 RR |
4801 | { |
4802 | int i; | |
4803 | struct device *dev = &pdev->dev; | |
4804 | char *cdn; | |
4805 | ||
4806 | for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { | |
4807 | /* | |
4808 | * Not all algorithms were registered, depending on whether | |
4809 | * hardware is SPU or SPU2. So here we make sure to skip | |
4810 | * those algorithms that were not previously registered. | |
4811 | */ | |
4812 | if (!driver_algs[i].registered) | |
4813 | continue; | |
4814 | ||
4815 | switch (driver_algs[i].type) { | |
a9c01cd6 AB |
4816 | case CRYPTO_ALG_TYPE_SKCIPHER: |
4817 | crypto_unregister_skcipher(&driver_algs[i].alg.skcipher); | |
9d12ba86 | 4818 | dev_dbg(dev, " unregistered cipher %s\n", |
a9c01cd6 | 4819 | driver_algs[i].alg.skcipher.base.cra_driver_name); |
9d12ba86 RR |
4820 | driver_algs[i].registered = false; |
4821 | break; | |
4822 | case CRYPTO_ALG_TYPE_AHASH: | |
4823 | crypto_unregister_ahash(&driver_algs[i].alg.hash); | |
4824 | cdn = driver_algs[i].alg.hash.halg.base.cra_driver_name; | |
4825 | dev_dbg(dev, " unregistered hash %s\n", cdn); | |
4826 | driver_algs[i].registered = false; | |
4827 | break; | |
4828 | case CRYPTO_ALG_TYPE_AEAD: | |
4829 | crypto_unregister_aead(&driver_algs[i].alg.aead); | |
4830 | dev_dbg(dev, " unregistered aead %s\n", | |
4831 | driver_algs[i].alg.aead.base.cra_driver_name); | |
4832 | driver_algs[i].registered = false; | |
4833 | break; | |
4834 | } | |
4835 | } | |
4836 | spu_free_debugfs(); | |
4837 | spu_mb_release(pdev); | |
4838 | return 0; | |
4839 | } | |
4840 | ||
4841 | /* ===== Kernel Module API ===== */ | |
4842 | ||
4843 | static struct platform_driver bcm_spu_pdriver = { | |
4844 | .driver = { | |
4845 | .name = "brcm-spu-crypto", | |
4846 | .of_match_table = of_match_ptr(bcm_spu_dt_ids), | |
4847 | }, | |
4848 | .probe = bcm_spu_probe, | |
4849 | .remove = bcm_spu_remove, | |
4850 | }; | |
4851 | module_platform_driver(bcm_spu_pdriver); | |
4852 | ||
4853 | MODULE_AUTHOR("Rob Rice <rob.rice@broadcom.com>"); | |
4854 | MODULE_DESCRIPTION("Broadcom symmetric crypto offload driver"); | |
4855 | MODULE_LICENSE("GPL v2"); |