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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/md5.h> |
30 | #include <crypto/authenc.h> | |
31 | #include <crypto/skcipher.h> | |
32 | #include <crypto/hash.h> | |
a24d22b2 EB |
33 | #include <crypto/sha1.h> |
34 | #include <crypto/sha2.h> | |
9d12ba86 RR |
35 | #include <crypto/sha3.h> |
36 | ||
37 | #include "util.h" | |
38 | #include "cipher.h" | |
39 | #include "spu.h" | |
40 | #include "spum.h" | |
41 | #include "spu2.h" | |
42 | ||
43 | /* ================= Device Structure ================== */ | |
44 | ||
45 | struct device_private iproc_priv; | |
46 | ||
47 | /* ==================== Parameters ===================== */ | |
48 | ||
49 | int flow_debug_logging; | |
50 | module_param(flow_debug_logging, int, 0644); | |
51 | MODULE_PARM_DESC(flow_debug_logging, "Enable Flow Debug Logging"); | |
52 | ||
53 | int packet_debug_logging; | |
54 | module_param(packet_debug_logging, int, 0644); | |
55 | MODULE_PARM_DESC(packet_debug_logging, "Enable Packet Debug Logging"); | |
56 | ||
57 | int debug_logging_sleep; | |
58 | module_param(debug_logging_sleep, int, 0644); | |
59 | MODULE_PARM_DESC(debug_logging_sleep, "Packet Debug Logging Sleep"); | |
60 | ||
61 | /* | |
62 | * The value of these module parameters is used to set the priority for each | |
63 | * algo type when this driver registers algos with the kernel crypto API. | |
64 | * To use a priority other than the default, set the priority in the insmod or | |
65 | * modprobe. Changing the module priority after init time has no effect. | |
66 | * | |
67 | * The default priorities are chosen to be lower (less preferred) than ARMv8 CE | |
68 | * algos, but more preferred than generic software algos. | |
69 | */ | |
70 | static int cipher_pri = 150; | |
71 | module_param(cipher_pri, int, 0644); | |
72 | MODULE_PARM_DESC(cipher_pri, "Priority for cipher algos"); | |
73 | ||
74 | static int hash_pri = 100; | |
75 | module_param(hash_pri, int, 0644); | |
76 | MODULE_PARM_DESC(hash_pri, "Priority for hash algos"); | |
77 | ||
78 | static int aead_pri = 150; | |
79 | module_param(aead_pri, int, 0644); | |
80 | MODULE_PARM_DESC(aead_pri, "Priority for AEAD algos"); | |
81 | ||
9d12ba86 RR |
82 | /* A type 3 BCM header, expected to precede the SPU header for SPU-M. |
83 | * Bits 3 and 4 in the first byte encode the channel number (the dma ringset). | |
84 | * 0x60 - ring 0 | |
85 | * 0x68 - ring 1 | |
86 | * 0x70 - ring 2 | |
87 | * 0x78 - ring 3 | |
88 | */ | |
dd508618 | 89 | static char BCMHEADER[] = { 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28 }; |
9d12ba86 RR |
90 | /* |
91 | * Some SPU hw does not use BCM header on SPU messages. So BCM_HDR_LEN | |
92 | * is set dynamically after reading SPU type from device tree. | |
93 | */ | |
94 | #define BCM_HDR_LEN iproc_priv.bcm_hdr_len | |
95 | ||
96 | /* min and max time to sleep before retrying when mbox queue is full. usec */ | |
97 | #define MBOX_SLEEP_MIN 800 | |
98 | #define MBOX_SLEEP_MAX 1000 | |
99 | ||
100 | /** | |
101 | * select_channel() - Select a SPU channel to handle a crypto request. Selects | |
102 | * channel in round robin order. | |
103 | * | |
104 | * Return: channel index | |
105 | */ | |
106 | static u8 select_channel(void) | |
107 | { | |
108 | u8 chan_idx = atomic_inc_return(&iproc_priv.next_chan); | |
109 | ||
9166c443 | 110 | return chan_idx % iproc_priv.spu.num_chan; |
9d12ba86 RR |
111 | } |
112 | ||
113 | /** | |
a9c01cd6 AB |
114 | * spu_skcipher_rx_sg_create() - Build up the scatterlist of buffers used to |
115 | * receive a SPU response message for an skcipher request. Includes buffers to | |
9d12ba86 RR |
116 | * catch SPU message headers and the response data. |
117 | * @mssg: mailbox message containing the receive sg | |
118 | * @rctx: crypto request context | |
119 | * @rx_frag_num: number of scatterlist elements required to hold the | |
120 | * SPU response message | |
121 | * @chunksize: Number of bytes of response data expected | |
122 | * @stat_pad_len: Number of bytes required to pad the STAT field to | |
123 | * a 4-byte boundary | |
124 | * | |
125 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
126 | * when the request completes, whether the request is handled successfully or | |
127 | * there is an error. | |
128 | * | |
129 | * Returns: | |
130 | * 0 if successful | |
131 | * < 0 if an error | |
132 | */ | |
133 | static int | |
a9c01cd6 | 134 | spu_skcipher_rx_sg_create(struct brcm_message *mssg, |
9d12ba86 RR |
135 | struct iproc_reqctx_s *rctx, |
136 | u8 rx_frag_num, | |
137 | unsigned int chunksize, u32 stat_pad_len) | |
138 | { | |
139 | struct spu_hw *spu = &iproc_priv.spu; | |
140 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
141 | struct iproc_ctx_s *ctx = rctx->ctx; | |
142 | u32 datalen; /* Number of bytes of response data expected */ | |
143 | ||
144 | mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist), | |
145 | rctx->gfp); | |
146 | if (!mssg->spu.dst) | |
147 | return -ENOMEM; | |
148 | ||
149 | sg = mssg->spu.dst; | |
150 | sg_init_table(sg, rx_frag_num); | |
151 | /* Space for SPU message header */ | |
152 | sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len); | |
153 | ||
154 | /* If XTS tweak in payload, add buffer to receive encrypted tweak */ | |
155 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
156 | spu->spu_xts_tweak_in_payload()) | |
157 | sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak, | |
158 | SPU_XTS_TWEAK_SIZE); | |
159 | ||
160 | /* Copy in each dst sg entry from request, up to chunksize */ | |
161 | datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip, | |
162 | rctx->dst_nents, chunksize); | |
163 | if (datalen < chunksize) { | |
164 | pr_err("%s(): failed to copy dst sg to mbox msg. chunksize %u, datalen %u", | |
165 | __func__, chunksize, datalen); | |
166 | return -EFAULT; | |
167 | } | |
168 | ||
9d12ba86 RR |
169 | if (stat_pad_len) |
170 | sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len); | |
171 | ||
172 | memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN); | |
173 | sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len()); | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
178 | /** | |
a9c01cd6 AB |
179 | * spu_skcipher_tx_sg_create() - Build up the scatterlist of buffers used to |
180 | * send a SPU request message for an skcipher request. Includes SPU message | |
9d12ba86 RR |
181 | * headers and the request data. |
182 | * @mssg: mailbox message containing the transmit sg | |
183 | * @rctx: crypto request context | |
184 | * @tx_frag_num: number of scatterlist elements required to construct the | |
185 | * SPU request message | |
186 | * @chunksize: Number of bytes of request data | |
187 | * @pad_len: Number of pad bytes | |
188 | * | |
189 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
190 | * when the request completes, whether the request is handled successfully or | |
191 | * there is an error. | |
192 | * | |
193 | * Returns: | |
194 | * 0 if successful | |
195 | * < 0 if an error | |
196 | */ | |
197 | static int | |
a9c01cd6 | 198 | spu_skcipher_tx_sg_create(struct brcm_message *mssg, |
9d12ba86 RR |
199 | struct iproc_reqctx_s *rctx, |
200 | u8 tx_frag_num, unsigned int chunksize, u32 pad_len) | |
201 | { | |
202 | struct spu_hw *spu = &iproc_priv.spu; | |
203 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
204 | struct iproc_ctx_s *ctx = rctx->ctx; | |
205 | u32 datalen; /* Number of bytes of response data expected */ | |
206 | u32 stat_len; | |
207 | ||
208 | mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist), | |
209 | rctx->gfp); | |
210 | if (unlikely(!mssg->spu.src)) | |
211 | return -ENOMEM; | |
212 | ||
213 | sg = mssg->spu.src; | |
214 | sg_init_table(sg, tx_frag_num); | |
215 | ||
216 | sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr, | |
217 | BCM_HDR_LEN + ctx->spu_req_hdr_len); | |
218 | ||
219 | /* if XTS tweak in payload, copy from IV (where crypto API puts it) */ | |
220 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
221 | spu->spu_xts_tweak_in_payload()) | |
222 | sg_set_buf(sg++, rctx->msg_buf.iv_ctr, SPU_XTS_TWEAK_SIZE); | |
223 | ||
224 | /* Copy in each src sg entry from request, up to chunksize */ | |
225 | datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip, | |
226 | rctx->src_nents, chunksize); | |
227 | if (unlikely(datalen < chunksize)) { | |
228 | pr_err("%s(): failed to copy src sg to mbox msg", | |
229 | __func__); | |
230 | return -EFAULT; | |
231 | } | |
232 | ||
233 | if (pad_len) | |
234 | sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len); | |
235 | ||
236 | stat_len = spu->spu_tx_status_len(); | |
237 | if (stat_len) { | |
238 | memset(rctx->msg_buf.tx_stat, 0, stat_len); | |
239 | sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len); | |
240 | } | |
241 | return 0; | |
242 | } | |
243 | ||
f0e2ce58 | 244 | static int mailbox_send_message(struct brcm_message *mssg, u32 flags, |
245 | u8 chan_idx) | |
246 | { | |
247 | int err; | |
248 | int retry_cnt = 0; | |
249 | struct device *dev = &(iproc_priv.pdev->dev); | |
250 | ||
251 | err = mbox_send_message(iproc_priv.mbox[chan_idx], mssg); | |
252 | if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) { | |
253 | while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) { | |
254 | /* | |
255 | * Mailbox queue is full. Since MAY_SLEEP is set, assume | |
256 | * not in atomic context and we can wait and try again. | |
257 | */ | |
258 | retry_cnt++; | |
259 | usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX); | |
260 | err = mbox_send_message(iproc_priv.mbox[chan_idx], | |
261 | mssg); | |
262 | atomic_inc(&iproc_priv.mb_no_spc); | |
263 | } | |
264 | } | |
265 | if (err < 0) { | |
266 | atomic_inc(&iproc_priv.mb_send_fail); | |
267 | return err; | |
268 | } | |
269 | ||
270 | /* Check error returned by mailbox controller */ | |
271 | err = mssg->error; | |
272 | if (unlikely(err < 0)) { | |
273 | dev_err(dev, "message error %d", err); | |
274 | /* Signal txdone for mailbox channel */ | |
275 | } | |
276 | ||
277 | /* Signal txdone for mailbox channel */ | |
278 | mbox_client_txdone(iproc_priv.mbox[chan_idx], err); | |
279 | return err; | |
280 | } | |
281 | ||
9d12ba86 | 282 | /** |
a9c01cd6 | 283 | * handle_skcipher_req() - Submit as much of a block cipher request as fits in |
9d12ba86 RR |
284 | * a single SPU request message, starting at the current position in the request |
285 | * data. | |
286 | * @rctx: Crypto request context | |
287 | * | |
288 | * This may be called on the crypto API thread, or, when a request is so large | |
289 | * it must be broken into multiple SPU messages, on the thread used to invoke | |
290 | * the response callback. When requests are broken into multiple SPU | |
291 | * messages, we assume subsequent messages depend on previous results, and | |
292 | * thus always wait for previous results before submitting the next message. | |
293 | * Because requests are submitted in lock step like this, there is no need | |
294 | * to synchronize access to request data structures. | |
295 | * | |
296 | * Return: -EINPROGRESS: request has been accepted and result will be returned | |
297 | * asynchronously | |
298 | * Any other value indicates an error | |
299 | */ | |
a9c01cd6 | 300 | static int handle_skcipher_req(struct iproc_reqctx_s *rctx) |
9d12ba86 RR |
301 | { |
302 | struct spu_hw *spu = &iproc_priv.spu; | |
303 | struct crypto_async_request *areq = rctx->parent; | |
a9c01cd6 AB |
304 | struct skcipher_request *req = |
305 | container_of(areq, struct skcipher_request, base); | |
9d12ba86 RR |
306 | struct iproc_ctx_s *ctx = rctx->ctx; |
307 | struct spu_cipher_parms cipher_parms; | |
12b3cf90 TB |
308 | int err; |
309 | unsigned int chunksize; /* Num bytes of request to submit */ | |
310 | int remaining; /* Bytes of request still to process */ | |
9d12ba86 RR |
311 | int chunk_start; /* Beginning of data for current SPU msg */ |
312 | ||
313 | /* IV or ctr value to use in this SPU msg */ | |
314 | u8 local_iv_ctr[MAX_IV_SIZE]; | |
315 | u32 stat_pad_len; /* num bytes to align status field */ | |
316 | u32 pad_len; /* total length of all padding */ | |
9d12ba86 | 317 | struct brcm_message *mssg; /* mailbox message */ |
9d12ba86 RR |
318 | |
319 | /* number of entries in src and dst sg in mailbox message. */ | |
320 | u8 rx_frag_num = 2; /* response header and STATUS */ | |
321 | u8 tx_frag_num = 1; /* request header */ | |
322 | ||
323 | flow_log("%s\n", __func__); | |
324 | ||
325 | cipher_parms.alg = ctx->cipher.alg; | |
326 | cipher_parms.mode = ctx->cipher.mode; | |
327 | cipher_parms.type = ctx->cipher_type; | |
328 | cipher_parms.key_len = ctx->enckeylen; | |
329 | cipher_parms.key_buf = ctx->enckey; | |
330 | cipher_parms.iv_buf = local_iv_ctr; | |
331 | cipher_parms.iv_len = rctx->iv_ctr_len; | |
332 | ||
333 | mssg = &rctx->mb_mssg; | |
334 | chunk_start = rctx->src_sent; | |
335 | remaining = rctx->total_todo - chunk_start; | |
336 | ||
337 | /* determine the chunk we are breaking off and update the indexes */ | |
338 | if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) && | |
339 | (remaining > ctx->max_payload)) | |
340 | chunksize = ctx->max_payload; | |
341 | else | |
342 | chunksize = remaining; | |
343 | ||
344 | rctx->src_sent += chunksize; | |
345 | rctx->total_sent = rctx->src_sent; | |
346 | ||
347 | /* Count number of sg entries to be included in this request */ | |
348 | rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize); | |
349 | rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize); | |
350 | ||
351 | if ((ctx->cipher.mode == CIPHER_MODE_CBC) && | |
352 | rctx->is_encrypt && chunk_start) | |
353 | /* | |
354 | * Encrypting non-first first chunk. Copy last block of | |
355 | * previous result to IV for this chunk. | |
356 | */ | |
357 | sg_copy_part_to_buf(req->dst, rctx->msg_buf.iv_ctr, | |
358 | rctx->iv_ctr_len, | |
359 | chunk_start - rctx->iv_ctr_len); | |
360 | ||
361 | if (rctx->iv_ctr_len) { | |
362 | /* get our local copy of the iv */ | |
363 | __builtin_memcpy(local_iv_ctr, rctx->msg_buf.iv_ctr, | |
364 | rctx->iv_ctr_len); | |
365 | ||
366 | /* generate the next IV if possible */ | |
367 | if ((ctx->cipher.mode == CIPHER_MODE_CBC) && | |
368 | !rctx->is_encrypt) { | |
369 | /* | |
370 | * CBC Decrypt: next IV is the last ciphertext block in | |
371 | * this chunk | |
372 | */ | |
373 | sg_copy_part_to_buf(req->src, rctx->msg_buf.iv_ctr, | |
374 | rctx->iv_ctr_len, | |
375 | rctx->src_sent - rctx->iv_ctr_len); | |
376 | } else if (ctx->cipher.mode == CIPHER_MODE_CTR) { | |
377 | /* | |
378 | * The SPU hardware increments the counter once for | |
379 | * each AES block of 16 bytes. So update the counter | |
380 | * for the next chunk, if there is one. Note that for | |
381 | * this chunk, the counter has already been copied to | |
382 | * local_iv_ctr. We can assume a block size of 16, | |
383 | * because we only support CTR mode for AES, not for | |
384 | * any other cipher alg. | |
385 | */ | |
386 | add_to_ctr(rctx->msg_buf.iv_ctr, chunksize >> 4); | |
387 | } | |
388 | } | |
389 | ||
9d12ba86 RR |
390 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) |
391 | flow_log("max_payload infinite\n"); | |
392 | else | |
393 | flow_log("max_payload %u\n", ctx->max_payload); | |
394 | ||
395 | flow_log("sent:%u start:%u remains:%u size:%u\n", | |
396 | rctx->src_sent, chunk_start, remaining, chunksize); | |
397 | ||
398 | /* Copy SPU header template created at setkey time */ | |
399 | memcpy(rctx->msg_buf.bcm_spu_req_hdr, ctx->bcm_spu_req_hdr, | |
400 | sizeof(rctx->msg_buf.bcm_spu_req_hdr)); | |
401 | ||
9d12ba86 RR |
402 | spu->spu_cipher_req_finish(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, |
403 | ctx->spu_req_hdr_len, !(rctx->is_encrypt), | |
1dbab6b1 | 404 | &cipher_parms, chunksize); |
9d12ba86 RR |
405 | |
406 | atomic64_add(chunksize, &iproc_priv.bytes_out); | |
407 | ||
408 | stat_pad_len = spu->spu_wordalign_padlen(chunksize); | |
409 | if (stat_pad_len) | |
410 | rx_frag_num++; | |
411 | pad_len = stat_pad_len; | |
412 | if (pad_len) { | |
413 | tx_frag_num++; | |
414 | spu->spu_request_pad(rctx->msg_buf.spu_req_pad, 0, | |
415 | 0, ctx->auth.alg, ctx->auth.mode, | |
416 | rctx->total_sent, stat_pad_len); | |
417 | } | |
418 | ||
419 | spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
420 | ctx->spu_req_hdr_len); | |
421 | packet_log("payload:\n"); | |
422 | dump_sg(rctx->src_sg, rctx->src_skip, chunksize); | |
423 | packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len); | |
424 | ||
425 | /* | |
426 | * Build mailbox message containing SPU request msg and rx buffers | |
427 | * to catch response message | |
428 | */ | |
429 | memset(mssg, 0, sizeof(*mssg)); | |
430 | mssg->type = BRCM_MESSAGE_SPU; | |
431 | mssg->ctx = rctx; /* Will be returned in response */ | |
432 | ||
433 | /* Create rx scatterlist to catch result */ | |
434 | rx_frag_num += rctx->dst_nents; | |
435 | ||
436 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
437 | spu->spu_xts_tweak_in_payload()) | |
438 | rx_frag_num++; /* extra sg to insert tweak */ | |
439 | ||
a9c01cd6 | 440 | err = spu_skcipher_rx_sg_create(mssg, rctx, rx_frag_num, chunksize, |
9d12ba86 RR |
441 | stat_pad_len); |
442 | if (err) | |
443 | return err; | |
444 | ||
445 | /* Create tx scatterlist containing SPU request message */ | |
446 | tx_frag_num += rctx->src_nents; | |
447 | if (spu->spu_tx_status_len()) | |
448 | tx_frag_num++; | |
449 | ||
450 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
451 | spu->spu_xts_tweak_in_payload()) | |
452 | tx_frag_num++; /* extra sg to insert tweak */ | |
453 | ||
a9c01cd6 | 454 | err = spu_skcipher_tx_sg_create(mssg, rctx, tx_frag_num, chunksize, |
9d12ba86 RR |
455 | pad_len); |
456 | if (err) | |
457 | return err; | |
458 | ||
f0e2ce58 | 459 | err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx); |
460 | if (unlikely(err < 0)) | |
9d12ba86 | 461 | return err; |
9d12ba86 RR |
462 | |
463 | return -EINPROGRESS; | |
464 | } | |
465 | ||
466 | /** | |
a9c01cd6 | 467 | * handle_skcipher_resp() - Process a block cipher SPU response. Updates the |
9d12ba86 RR |
468 | * total received count for the request and updates global stats. |
469 | * @rctx: Crypto request context | |
470 | */ | |
a9c01cd6 | 471 | static void handle_skcipher_resp(struct iproc_reqctx_s *rctx) |
9d12ba86 RR |
472 | { |
473 | struct spu_hw *spu = &iproc_priv.spu; | |
474 | #ifdef DEBUG | |
475 | struct crypto_async_request *areq = rctx->parent; | |
a9c01cd6 | 476 | struct skcipher_request *req = skcipher_request_cast(areq); |
9d12ba86 RR |
477 | #endif |
478 | struct iproc_ctx_s *ctx = rctx->ctx; | |
479 | u32 payload_len; | |
480 | ||
481 | /* See how much data was returned */ | |
482 | payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr); | |
483 | ||
484 | /* | |
485 | * In XTS mode, the first SPU_XTS_TWEAK_SIZE bytes may be the | |
486 | * encrypted tweak ("i") value; we don't count those. | |
487 | */ | |
488 | if ((ctx->cipher.mode == CIPHER_MODE_XTS) && | |
489 | spu->spu_xts_tweak_in_payload() && | |
490 | (payload_len >= SPU_XTS_TWEAK_SIZE)) | |
491 | payload_len -= SPU_XTS_TWEAK_SIZE; | |
492 | ||
493 | atomic64_add(payload_len, &iproc_priv.bytes_in); | |
494 | ||
495 | flow_log("%s() offset: %u, bd_len: %u BD:\n", | |
496 | __func__, rctx->total_received, payload_len); | |
497 | ||
498 | dump_sg(req->dst, rctx->total_received, payload_len); | |
9d12ba86 RR |
499 | |
500 | rctx->total_received += payload_len; | |
501 | if (rctx->total_received == rctx->total_todo) { | |
502 | atomic_inc(&iproc_priv.op_counts[SPU_OP_CIPHER]); | |
503 | atomic_inc( | |
504 | &iproc_priv.cipher_cnt[ctx->cipher.alg][ctx->cipher.mode]); | |
505 | } | |
506 | } | |
507 | ||
508 | /** | |
509 | * spu_ahash_rx_sg_create() - Build up the scatterlist of buffers used to | |
510 | * receive a SPU response message for an ahash request. | |
511 | * @mssg: mailbox message containing the receive sg | |
512 | * @rctx: crypto request context | |
513 | * @rx_frag_num: number of scatterlist elements required to hold the | |
514 | * SPU response message | |
515 | * @digestsize: length of hash digest, in bytes | |
516 | * @stat_pad_len: Number of bytes required to pad the STAT field to | |
517 | * a 4-byte boundary | |
518 | * | |
519 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
520 | * when the request completes, whether the request is handled successfully or | |
521 | * there is an error. | |
522 | * | |
523 | * Return: | |
524 | * 0 if successful | |
525 | * < 0 if an error | |
526 | */ | |
527 | static int | |
528 | spu_ahash_rx_sg_create(struct brcm_message *mssg, | |
529 | struct iproc_reqctx_s *rctx, | |
530 | u8 rx_frag_num, unsigned int digestsize, | |
531 | u32 stat_pad_len) | |
532 | { | |
533 | struct spu_hw *spu = &iproc_priv.spu; | |
534 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
535 | struct iproc_ctx_s *ctx = rctx->ctx; | |
536 | ||
537 | mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist), | |
538 | rctx->gfp); | |
539 | if (!mssg->spu.dst) | |
540 | return -ENOMEM; | |
541 | ||
542 | sg = mssg->spu.dst; | |
543 | sg_init_table(sg, rx_frag_num); | |
544 | /* Space for SPU message header */ | |
545 | sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len); | |
546 | ||
547 | /* Space for digest */ | |
548 | sg_set_buf(sg++, rctx->msg_buf.digest, digestsize); | |
549 | ||
550 | if (stat_pad_len) | |
551 | sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len); | |
552 | ||
553 | memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN); | |
554 | sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len()); | |
555 | return 0; | |
556 | } | |
557 | ||
558 | /** | |
559 | * spu_ahash_tx_sg_create() - Build up the scatterlist of buffers used to send | |
560 | * a SPU request message for an ahash request. Includes SPU message headers and | |
561 | * the request data. | |
562 | * @mssg: mailbox message containing the transmit sg | |
563 | * @rctx: crypto request context | |
564 | * @tx_frag_num: number of scatterlist elements required to construct the | |
565 | * SPU request message | |
566 | * @spu_hdr_len: length in bytes of SPU message header | |
567 | * @hash_carry_len: Number of bytes of data carried over from previous req | |
568 | * @new_data_len: Number of bytes of new request data | |
569 | * @pad_len: Number of pad bytes | |
570 | * | |
571 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
572 | * when the request completes, whether the request is handled successfully or | |
573 | * there is an error. | |
574 | * | |
575 | * Return: | |
576 | * 0 if successful | |
577 | * < 0 if an error | |
578 | */ | |
579 | static int | |
580 | spu_ahash_tx_sg_create(struct brcm_message *mssg, | |
581 | struct iproc_reqctx_s *rctx, | |
582 | u8 tx_frag_num, | |
583 | u32 spu_hdr_len, | |
584 | unsigned int hash_carry_len, | |
585 | unsigned int new_data_len, u32 pad_len) | |
586 | { | |
587 | struct spu_hw *spu = &iproc_priv.spu; | |
588 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
589 | u32 datalen; /* Number of bytes of response data expected */ | |
590 | u32 stat_len; | |
591 | ||
592 | mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist), | |
593 | rctx->gfp); | |
594 | if (!mssg->spu.src) | |
595 | return -ENOMEM; | |
596 | ||
597 | sg = mssg->spu.src; | |
598 | sg_init_table(sg, tx_frag_num); | |
599 | ||
600 | sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr, | |
601 | BCM_HDR_LEN + spu_hdr_len); | |
602 | ||
603 | if (hash_carry_len) | |
604 | sg_set_buf(sg++, rctx->hash_carry, hash_carry_len); | |
605 | ||
606 | if (new_data_len) { | |
607 | /* Copy in each src sg entry from request, up to chunksize */ | |
608 | datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip, | |
609 | rctx->src_nents, new_data_len); | |
610 | if (datalen < new_data_len) { | |
611 | pr_err("%s(): failed to copy src sg to mbox msg", | |
612 | __func__); | |
613 | return -EFAULT; | |
614 | } | |
615 | } | |
616 | ||
617 | if (pad_len) | |
618 | sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len); | |
619 | ||
620 | stat_len = spu->spu_tx_status_len(); | |
621 | if (stat_len) { | |
622 | memset(rctx->msg_buf.tx_stat, 0, stat_len); | |
623 | sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len); | |
624 | } | |
625 | ||
626 | return 0; | |
627 | } | |
628 | ||
629 | /** | |
630 | * handle_ahash_req() - Process an asynchronous hash request from the crypto | |
631 | * API. | |
632 | * @rctx: Crypto request context | |
633 | * | |
634 | * Builds a SPU request message embedded in a mailbox message and submits the | |
635 | * mailbox message on a selected mailbox channel. The SPU request message is | |
636 | * constructed as a scatterlist, including entries from the crypto API's | |
637 | * src scatterlist to avoid copying the data to be hashed. This function is | |
638 | * called either on the thread from the crypto API, or, in the case that the | |
639 | * crypto API request is too large to fit in a single SPU request message, | |
640 | * on the thread that invokes the receive callback with a response message. | |
641 | * Because some operations require the response from one chunk before the next | |
642 | * chunk can be submitted, we always wait for the response for the previous | |
643 | * chunk before submitting the next chunk. Because requests are submitted in | |
644 | * lock step like this, there is no need to synchronize access to request data | |
645 | * structures. | |
646 | * | |
647 | * Return: | |
648 | * -EINPROGRESS: request has been submitted to SPU and response will be | |
649 | * returned asynchronously | |
650 | * -EAGAIN: non-final request included a small amount of data, which for | |
651 | * efficiency we did not submit to the SPU, but instead stored | |
652 | * to be submitted to the SPU with the next part of the request | |
653 | * other: an error code | |
654 | */ | |
655 | static int handle_ahash_req(struct iproc_reqctx_s *rctx) | |
656 | { | |
657 | struct spu_hw *spu = &iproc_priv.spu; | |
658 | struct crypto_async_request *areq = rctx->parent; | |
659 | struct ahash_request *req = ahash_request_cast(areq); | |
660 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
661 | struct crypto_tfm *tfm = crypto_ahash_tfm(ahash); | |
662 | unsigned int blocksize = crypto_tfm_alg_blocksize(tfm); | |
663 | struct iproc_ctx_s *ctx = rctx->ctx; | |
664 | ||
665 | /* number of bytes still to be hashed in this req */ | |
666 | unsigned int nbytes_to_hash = 0; | |
12b3cf90 | 667 | int err; |
9d12ba86 RR |
668 | unsigned int chunksize = 0; /* length of hash carry + new data */ |
669 | /* | |
670 | * length of new data, not from hash carry, to be submitted in | |
671 | * this hw request | |
672 | */ | |
673 | unsigned int new_data_len; | |
674 | ||
707d0cf8 | 675 | unsigned int __maybe_unused chunk_start = 0; |
9d12ba86 RR |
676 | u32 db_size; /* Length of data field, incl gcm and hash padding */ |
677 | int pad_len = 0; /* total pad len, including gcm, hash, stat padding */ | |
678 | u32 data_pad_len = 0; /* length of GCM/CCM padding */ | |
679 | u32 stat_pad_len = 0; /* length of padding to align STATUS word */ | |
680 | struct brcm_message *mssg; /* mailbox message */ | |
681 | struct spu_request_opts req_opts; | |
682 | struct spu_cipher_parms cipher_parms; | |
683 | struct spu_hash_parms hash_parms; | |
684 | struct spu_aead_parms aead_parms; | |
685 | unsigned int local_nbuf; | |
686 | u32 spu_hdr_len; | |
687 | unsigned int digestsize; | |
688 | u16 rem = 0; | |
9d12ba86 RR |
689 | |
690 | /* | |
691 | * number of entries in src and dst sg. Always includes SPU msg header. | |
692 | * rx always includes a buffer to catch digest and STATUS. | |
693 | */ | |
694 | u8 rx_frag_num = 3; | |
695 | u8 tx_frag_num = 1; | |
696 | ||
697 | flow_log("total_todo %u, total_sent %u\n", | |
698 | rctx->total_todo, rctx->total_sent); | |
699 | ||
700 | memset(&req_opts, 0, sizeof(req_opts)); | |
701 | memset(&cipher_parms, 0, sizeof(cipher_parms)); | |
702 | memset(&hash_parms, 0, sizeof(hash_parms)); | |
703 | memset(&aead_parms, 0, sizeof(aead_parms)); | |
704 | ||
705 | req_opts.bd_suppress = true; | |
706 | hash_parms.alg = ctx->auth.alg; | |
707 | hash_parms.mode = ctx->auth.mode; | |
708 | hash_parms.type = HASH_TYPE_NONE; | |
709 | hash_parms.key_buf = (u8 *)ctx->authkey; | |
710 | hash_parms.key_len = ctx->authkeylen; | |
711 | ||
712 | /* | |
713 | * For hash algorithms below assignment looks bit odd but | |
714 | * it's needed for AES-XCBC and AES-CMAC hash algorithms | |
715 | * to differentiate between 128, 192, 256 bit key values. | |
716 | * Based on the key values, hash algorithm is selected. | |
717 | * For example for 128 bit key, hash algorithm is AES-128. | |
718 | */ | |
719 | cipher_parms.type = ctx->cipher_type; | |
720 | ||
721 | mssg = &rctx->mb_mssg; | |
722 | chunk_start = rctx->src_sent; | |
723 | ||
724 | /* | |
725 | * Compute the amount remaining to hash. This may include data | |
726 | * carried over from previous requests. | |
727 | */ | |
728 | nbytes_to_hash = rctx->total_todo - rctx->total_sent; | |
729 | chunksize = nbytes_to_hash; | |
730 | if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) && | |
731 | (chunksize > ctx->max_payload)) | |
732 | chunksize = ctx->max_payload; | |
733 | ||
734 | /* | |
735 | * If this is not a final request and the request data is not a multiple | |
736 | * of a full block, then simply park the extra data and prefix it to the | |
737 | * data for the next request. | |
738 | */ | |
739 | if (!rctx->is_final) { | |
740 | u8 *dest = rctx->hash_carry + rctx->hash_carry_len; | |
741 | u16 new_len; /* len of data to add to hash carry */ | |
742 | ||
743 | rem = chunksize % blocksize; /* remainder */ | |
744 | if (rem) { | |
745 | /* chunksize not a multiple of blocksize */ | |
746 | chunksize -= rem; | |
747 | if (chunksize == 0) { | |
748 | /* Don't have a full block to submit to hw */ | |
749 | new_len = rem - rctx->hash_carry_len; | |
750 | sg_copy_part_to_buf(req->src, dest, new_len, | |
751 | rctx->src_sent); | |
752 | rctx->hash_carry_len = rem; | |
753 | flow_log("Exiting with hash carry len: %u\n", | |
754 | rctx->hash_carry_len); | |
755 | packet_dump(" buf: ", | |
756 | rctx->hash_carry, | |
757 | rctx->hash_carry_len); | |
758 | return -EAGAIN; | |
759 | } | |
760 | } | |
761 | } | |
762 | ||
763 | /* if we have hash carry, then prefix it to the data in this request */ | |
764 | local_nbuf = rctx->hash_carry_len; | |
765 | rctx->hash_carry_len = 0; | |
766 | if (local_nbuf) | |
767 | tx_frag_num++; | |
768 | new_data_len = chunksize - local_nbuf; | |
769 | ||
770 | /* Count number of sg entries to be used in this request */ | |
771 | rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, | |
772 | new_data_len); | |
773 | ||
774 | /* AES hashing keeps key size in type field, so need to copy it here */ | |
775 | if (hash_parms.alg == HASH_ALG_AES) | |
a2e5d408 | 776 | hash_parms.type = (enum hash_type)cipher_parms.type; |
9d12ba86 RR |
777 | else |
778 | hash_parms.type = spu->spu_hash_type(rctx->total_sent); | |
779 | ||
780 | digestsize = spu->spu_digest_size(ctx->digestsize, ctx->auth.alg, | |
781 | hash_parms.type); | |
782 | hash_parms.digestsize = digestsize; | |
783 | ||
784 | /* update the indexes */ | |
785 | rctx->total_sent += chunksize; | |
786 | /* if you sent a prebuf then that wasn't from this req->src */ | |
787 | rctx->src_sent += new_data_len; | |
788 | ||
789 | if ((rctx->total_sent == rctx->total_todo) && rctx->is_final) | |
790 | hash_parms.pad_len = spu->spu_hash_pad_len(hash_parms.alg, | |
791 | hash_parms.mode, | |
792 | chunksize, | |
793 | blocksize); | |
794 | ||
795 | /* | |
796 | * If a non-first chunk, then include the digest returned from the | |
797 | * previous chunk so that hw can add to it (except for AES types). | |
798 | */ | |
799 | if ((hash_parms.type == HASH_TYPE_UPDT) && | |
800 | (hash_parms.alg != HASH_ALG_AES)) { | |
801 | hash_parms.key_buf = rctx->incr_hash; | |
802 | hash_parms.key_len = digestsize; | |
803 | } | |
804 | ||
805 | atomic64_add(chunksize, &iproc_priv.bytes_out); | |
806 | ||
807 | flow_log("%s() final: %u nbuf: %u ", | |
808 | __func__, rctx->is_final, local_nbuf); | |
809 | ||
810 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
811 | flow_log("max_payload infinite\n"); | |
812 | else | |
813 | flow_log("max_payload %u\n", ctx->max_payload); | |
814 | ||
815 | flow_log("chunk_start: %u chunk_size: %u\n", chunk_start, chunksize); | |
816 | ||
817 | /* Prepend SPU header with type 3 BCM header */ | |
818 | memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN); | |
819 | ||
820 | hash_parms.prebuf_len = local_nbuf; | |
821 | spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr + | |
822 | BCM_HDR_LEN, | |
823 | &req_opts, &cipher_parms, | |
824 | &hash_parms, &aead_parms, | |
825 | new_data_len); | |
826 | ||
827 | if (spu_hdr_len == 0) { | |
828 | pr_err("Failed to create SPU request header\n"); | |
829 | return -EFAULT; | |
830 | } | |
831 | ||
832 | /* | |
833 | * Determine total length of padding required. Put all padding in one | |
834 | * buffer. | |
835 | */ | |
836 | data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, chunksize); | |
837 | db_size = spu_real_db_size(0, 0, local_nbuf, new_data_len, | |
838 | 0, 0, hash_parms.pad_len); | |
839 | if (spu->spu_tx_status_len()) | |
840 | stat_pad_len = spu->spu_wordalign_padlen(db_size); | |
841 | if (stat_pad_len) | |
842 | rx_frag_num++; | |
843 | pad_len = hash_parms.pad_len + data_pad_len + stat_pad_len; | |
844 | if (pad_len) { | |
845 | tx_frag_num++; | |
846 | spu->spu_request_pad(rctx->msg_buf.spu_req_pad, data_pad_len, | |
847 | hash_parms.pad_len, ctx->auth.alg, | |
848 | ctx->auth.mode, rctx->total_sent, | |
849 | stat_pad_len); | |
850 | } | |
851 | ||
852 | spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
853 | spu_hdr_len); | |
854 | packet_dump(" prebuf: ", rctx->hash_carry, local_nbuf); | |
855 | flow_log("Data:\n"); | |
856 | dump_sg(rctx->src_sg, rctx->src_skip, new_data_len); | |
857 | packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len); | |
858 | ||
859 | /* | |
860 | * Build mailbox message containing SPU request msg and rx buffers | |
861 | * to catch response message | |
862 | */ | |
863 | memset(mssg, 0, sizeof(*mssg)); | |
864 | mssg->type = BRCM_MESSAGE_SPU; | |
865 | mssg->ctx = rctx; /* Will be returned in response */ | |
866 | ||
867 | /* Create rx scatterlist to catch result */ | |
868 | err = spu_ahash_rx_sg_create(mssg, rctx, rx_frag_num, digestsize, | |
869 | stat_pad_len); | |
870 | if (err) | |
871 | return err; | |
872 | ||
873 | /* Create tx scatterlist containing SPU request message */ | |
874 | tx_frag_num += rctx->src_nents; | |
875 | if (spu->spu_tx_status_len()) | |
876 | tx_frag_num++; | |
877 | err = spu_ahash_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len, | |
878 | local_nbuf, new_data_len, pad_len); | |
879 | if (err) | |
880 | return err; | |
881 | ||
f0e2ce58 | 882 | err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx); |
883 | if (unlikely(err < 0)) | |
9d12ba86 | 884 | return err; |
f0e2ce58 | 885 | |
9d12ba86 RR |
886 | return -EINPROGRESS; |
887 | } | |
888 | ||
889 | /** | |
890 | * spu_hmac_outer_hash() - Request synchonous software compute of the outer hash | |
891 | * for an HMAC request. | |
892 | * @req: The HMAC request from the crypto API | |
893 | * @ctx: The session context | |
894 | * | |
895 | * Return: 0 if synchronous hash operation successful | |
896 | * -EINVAL if the hash algo is unrecognized | |
897 | * any other value indicates an error | |
898 | */ | |
899 | static int spu_hmac_outer_hash(struct ahash_request *req, | |
900 | struct iproc_ctx_s *ctx) | |
901 | { | |
902 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
903 | unsigned int blocksize = | |
904 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash)); | |
905 | int rc; | |
906 | ||
907 | switch (ctx->auth.alg) { | |
908 | case HASH_ALG_MD5: | |
909 | rc = do_shash("md5", req->result, ctx->opad, blocksize, | |
910 | req->result, ctx->digestsize, NULL, 0); | |
911 | break; | |
912 | case HASH_ALG_SHA1: | |
913 | rc = do_shash("sha1", req->result, ctx->opad, blocksize, | |
914 | req->result, ctx->digestsize, NULL, 0); | |
915 | break; | |
916 | case HASH_ALG_SHA224: | |
917 | rc = do_shash("sha224", req->result, ctx->opad, blocksize, | |
918 | req->result, ctx->digestsize, NULL, 0); | |
919 | break; | |
920 | case HASH_ALG_SHA256: | |
921 | rc = do_shash("sha256", req->result, ctx->opad, blocksize, | |
922 | req->result, ctx->digestsize, NULL, 0); | |
923 | break; | |
924 | case HASH_ALG_SHA384: | |
925 | rc = do_shash("sha384", req->result, ctx->opad, blocksize, | |
926 | req->result, ctx->digestsize, NULL, 0); | |
927 | break; | |
928 | case HASH_ALG_SHA512: | |
929 | rc = do_shash("sha512", req->result, ctx->opad, blocksize, | |
930 | req->result, ctx->digestsize, NULL, 0); | |
931 | break; | |
932 | default: | |
933 | pr_err("%s() Error : unknown hmac type\n", __func__); | |
934 | rc = -EINVAL; | |
935 | } | |
936 | return rc; | |
937 | } | |
938 | ||
939 | /** | |
940 | * ahash_req_done() - Process a hash result from the SPU hardware. | |
941 | * @rctx: Crypto request context | |
942 | * | |
943 | * Return: 0 if successful | |
944 | * < 0 if an error | |
945 | */ | |
946 | static int ahash_req_done(struct iproc_reqctx_s *rctx) | |
947 | { | |
948 | struct spu_hw *spu = &iproc_priv.spu; | |
949 | struct crypto_async_request *areq = rctx->parent; | |
950 | struct ahash_request *req = ahash_request_cast(areq); | |
951 | struct iproc_ctx_s *ctx = rctx->ctx; | |
952 | int err; | |
953 | ||
954 | memcpy(req->result, rctx->msg_buf.digest, ctx->digestsize); | |
955 | ||
956 | if (spu->spu_type == SPU_TYPE_SPUM) { | |
957 | /* byte swap the output from the UPDT function to network byte | |
958 | * order | |
959 | */ | |
960 | if (ctx->auth.alg == HASH_ALG_MD5) { | |
961 | __swab32s((u32 *)req->result); | |
962 | __swab32s(((u32 *)req->result) + 1); | |
963 | __swab32s(((u32 *)req->result) + 2); | |
964 | __swab32s(((u32 *)req->result) + 3); | |
965 | __swab32s(((u32 *)req->result) + 4); | |
966 | } | |
967 | } | |
968 | ||
969 | flow_dump(" digest ", req->result, ctx->digestsize); | |
970 | ||
971 | /* if this an HMAC then do the outer hash */ | |
972 | if (rctx->is_sw_hmac) { | |
973 | err = spu_hmac_outer_hash(req, ctx); | |
974 | if (err < 0) | |
975 | return err; | |
976 | flow_dump(" hmac: ", req->result, ctx->digestsize); | |
977 | } | |
978 | ||
979 | if (rctx->is_sw_hmac || ctx->auth.mode == HASH_MODE_HMAC) { | |
980 | atomic_inc(&iproc_priv.op_counts[SPU_OP_HMAC]); | |
981 | atomic_inc(&iproc_priv.hmac_cnt[ctx->auth.alg]); | |
982 | } else { | |
983 | atomic_inc(&iproc_priv.op_counts[SPU_OP_HASH]); | |
984 | atomic_inc(&iproc_priv.hash_cnt[ctx->auth.alg]); | |
985 | } | |
986 | ||
987 | return 0; | |
988 | } | |
989 | ||
990 | /** | |
991 | * handle_ahash_resp() - Process a SPU response message for a hash request. | |
992 | * Checks if the entire crypto API request has been processed, and if so, | |
993 | * invokes post processing on the result. | |
994 | * @rctx: Crypto request context | |
995 | */ | |
996 | static void handle_ahash_resp(struct iproc_reqctx_s *rctx) | |
997 | { | |
998 | struct iproc_ctx_s *ctx = rctx->ctx; | |
999 | #ifdef DEBUG | |
1000 | struct crypto_async_request *areq = rctx->parent; | |
1001 | struct ahash_request *req = ahash_request_cast(areq); | |
1002 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
1003 | unsigned int blocksize = | |
1004 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash)); | |
1005 | #endif | |
1006 | /* | |
1007 | * Save hash to use as input to next op if incremental. Might be copying | |
1008 | * too much, but that's easier than figuring out actual digest size here | |
1009 | */ | |
1010 | memcpy(rctx->incr_hash, rctx->msg_buf.digest, MAX_DIGEST_SIZE); | |
1011 | ||
1012 | flow_log("%s() blocksize:%u digestsize:%u\n", | |
1013 | __func__, blocksize, ctx->digestsize); | |
1014 | ||
1015 | atomic64_add(ctx->digestsize, &iproc_priv.bytes_in); | |
1016 | ||
1017 | if (rctx->is_final && (rctx->total_sent == rctx->total_todo)) | |
1018 | ahash_req_done(rctx); | |
1019 | } | |
1020 | ||
1021 | /** | |
1022 | * spu_aead_rx_sg_create() - Build up the scatterlist of buffers used to receive | |
1023 | * a SPU response message for an AEAD request. Includes buffers to catch SPU | |
1024 | * message headers and the response data. | |
1025 | * @mssg: mailbox message containing the receive sg | |
1026 | * @rctx: crypto request context | |
1027 | * @rx_frag_num: number of scatterlist elements required to hold the | |
1028 | * SPU response message | |
1029 | * @assoc_len: Length of associated data included in the crypto request | |
1030 | * @ret_iv_len: Length of IV returned in response | |
1031 | * @resp_len: Number of bytes of response data expected to be written to | |
1032 | * dst buffer from crypto API | |
1033 | * @digestsize: Length of hash digest, in bytes | |
1034 | * @stat_pad_len: Number of bytes required to pad the STAT field to | |
1035 | * a 4-byte boundary | |
1036 | * | |
1037 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
1038 | * when the request completes, whether the request is handled successfully or | |
1039 | * there is an error. | |
1040 | * | |
1041 | * Returns: | |
1042 | * 0 if successful | |
1043 | * < 0 if an error | |
1044 | */ | |
1045 | static int spu_aead_rx_sg_create(struct brcm_message *mssg, | |
1046 | struct aead_request *req, | |
1047 | struct iproc_reqctx_s *rctx, | |
1048 | u8 rx_frag_num, | |
1049 | unsigned int assoc_len, | |
1050 | u32 ret_iv_len, unsigned int resp_len, | |
1051 | unsigned int digestsize, u32 stat_pad_len) | |
1052 | { | |
1053 | struct spu_hw *spu = &iproc_priv.spu; | |
1054 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
1055 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1056 | u32 datalen; /* Number of bytes of response data expected */ | |
1057 | u32 assoc_buf_len; | |
1058 | u8 data_padlen = 0; | |
1059 | ||
1060 | if (ctx->is_rfc4543) { | |
1061 | /* RFC4543: only pad after data, not after AAD */ | |
1062 | data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1063 | assoc_len + resp_len); | |
1064 | assoc_buf_len = assoc_len; | |
1065 | } else { | |
1066 | data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1067 | resp_len); | |
1068 | assoc_buf_len = spu->spu_assoc_resp_len(ctx->cipher.mode, | |
1069 | assoc_len, ret_iv_len, | |
1070 | rctx->is_encrypt); | |
1071 | } | |
1072 | ||
1073 | if (ctx->cipher.mode == CIPHER_MODE_CCM) | |
1074 | /* ICV (after data) must be in the next 32-bit word for CCM */ | |
1075 | data_padlen += spu->spu_wordalign_padlen(assoc_buf_len + | |
1076 | resp_len + | |
1077 | data_padlen); | |
1078 | ||
1079 | if (data_padlen) | |
1080 | /* have to catch gcm pad in separate buffer */ | |
1081 | rx_frag_num++; | |
1082 | ||
1083 | mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist), | |
1084 | rctx->gfp); | |
1085 | if (!mssg->spu.dst) | |
1086 | return -ENOMEM; | |
1087 | ||
1088 | sg = mssg->spu.dst; | |
1089 | sg_init_table(sg, rx_frag_num); | |
1090 | ||
1091 | /* Space for SPU message header */ | |
1092 | sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len); | |
1093 | ||
1094 | if (assoc_buf_len) { | |
1095 | /* | |
1096 | * Don't write directly to req->dst, because SPU may pad the | |
1097 | * assoc data in the response | |
1098 | */ | |
1099 | memset(rctx->msg_buf.a.resp_aad, 0, assoc_buf_len); | |
1100 | sg_set_buf(sg++, rctx->msg_buf.a.resp_aad, assoc_buf_len); | |
1101 | } | |
1102 | ||
1103 | if (resp_len) { | |
1104 | /* | |
1105 | * Copy in each dst sg entry from request, up to chunksize. | |
1106 | * dst sg catches just the data. digest caught in separate buf. | |
1107 | */ | |
1108 | datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip, | |
1109 | rctx->dst_nents, resp_len); | |
1110 | if (datalen < (resp_len)) { | |
1111 | pr_err("%s(): failed to copy dst sg to mbox msg. expected len %u, datalen %u", | |
1112 | __func__, resp_len, datalen); | |
1113 | return -EFAULT; | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | /* If GCM/CCM data is padded, catch padding in separate buffer */ | |
1118 | if (data_padlen) { | |
1119 | memset(rctx->msg_buf.a.gcmpad, 0, data_padlen); | |
1120 | sg_set_buf(sg++, rctx->msg_buf.a.gcmpad, data_padlen); | |
1121 | } | |
1122 | ||
1123 | /* Always catch ICV in separate buffer */ | |
1124 | sg_set_buf(sg++, rctx->msg_buf.digest, digestsize); | |
1125 | ||
1126 | flow_log("stat_pad_len %u\n", stat_pad_len); | |
1127 | if (stat_pad_len) { | |
1128 | memset(rctx->msg_buf.rx_stat_pad, 0, stat_pad_len); | |
1129 | sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len); | |
1130 | } | |
1131 | ||
1132 | memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN); | |
1133 | sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len()); | |
1134 | ||
1135 | return 0; | |
1136 | } | |
1137 | ||
1138 | /** | |
1139 | * spu_aead_tx_sg_create() - Build up the scatterlist of buffers used to send a | |
1140 | * SPU request message for an AEAD request. Includes SPU message headers and the | |
1141 | * request data. | |
1142 | * @mssg: mailbox message containing the transmit sg | |
1143 | * @rctx: crypto request context | |
1144 | * @tx_frag_num: number of scatterlist elements required to construct the | |
1145 | * SPU request message | |
1146 | * @spu_hdr_len: length of SPU message header in bytes | |
1147 | * @assoc: crypto API associated data scatterlist | |
1148 | * @assoc_len: length of associated data | |
1149 | * @assoc_nents: number of scatterlist entries containing assoc data | |
1150 | * @aead_iv_len: length of AEAD IV, if included | |
1151 | * @chunksize: Number of bytes of request data | |
1152 | * @aad_pad_len: Number of bytes of padding at end of AAD. For GCM/CCM. | |
1153 | * @pad_len: Number of pad bytes | |
1154 | * @incl_icv: If true, write separate ICV buffer after data and | |
1155 | * any padding | |
1156 | * | |
1157 | * The scatterlist that gets allocated here is freed in spu_chunk_cleanup() | |
1158 | * when the request completes, whether the request is handled successfully or | |
1159 | * there is an error. | |
1160 | * | |
1161 | * Return: | |
1162 | * 0 if successful | |
1163 | * < 0 if an error | |
1164 | */ | |
1165 | static int spu_aead_tx_sg_create(struct brcm_message *mssg, | |
1166 | struct iproc_reqctx_s *rctx, | |
1167 | u8 tx_frag_num, | |
1168 | u32 spu_hdr_len, | |
1169 | struct scatterlist *assoc, | |
1170 | unsigned int assoc_len, | |
1171 | int assoc_nents, | |
1172 | unsigned int aead_iv_len, | |
1173 | unsigned int chunksize, | |
1174 | u32 aad_pad_len, u32 pad_len, bool incl_icv) | |
1175 | { | |
1176 | struct spu_hw *spu = &iproc_priv.spu; | |
1177 | struct scatterlist *sg; /* used to build sgs in mbox message */ | |
1178 | struct scatterlist *assoc_sg = assoc; | |
1179 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1180 | u32 datalen; /* Number of bytes of data to write */ | |
1181 | u32 written; /* Number of bytes of data written */ | |
1182 | u32 assoc_offset = 0; | |
1183 | u32 stat_len; | |
1184 | ||
1185 | mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist), | |
1186 | rctx->gfp); | |
1187 | if (!mssg->spu.src) | |
1188 | return -ENOMEM; | |
1189 | ||
1190 | sg = mssg->spu.src; | |
1191 | sg_init_table(sg, tx_frag_num); | |
1192 | ||
1193 | sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr, | |
1194 | BCM_HDR_LEN + spu_hdr_len); | |
1195 | ||
1196 | if (assoc_len) { | |
1197 | /* Copy in each associated data sg entry from request */ | |
1198 | written = spu_msg_sg_add(&sg, &assoc_sg, &assoc_offset, | |
1199 | assoc_nents, assoc_len); | |
1200 | if (written < assoc_len) { | |
1201 | pr_err("%s(): failed to copy assoc sg to mbox msg", | |
1202 | __func__); | |
1203 | return -EFAULT; | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | if (aead_iv_len) | |
1208 | sg_set_buf(sg++, rctx->msg_buf.iv_ctr, aead_iv_len); | |
1209 | ||
1210 | if (aad_pad_len) { | |
1211 | memset(rctx->msg_buf.a.req_aad_pad, 0, aad_pad_len); | |
1212 | sg_set_buf(sg++, rctx->msg_buf.a.req_aad_pad, aad_pad_len); | |
1213 | } | |
1214 | ||
1215 | datalen = chunksize; | |
1216 | if ((chunksize > ctx->digestsize) && incl_icv) | |
1217 | datalen -= ctx->digestsize; | |
1218 | if (datalen) { | |
1219 | /* For aead, a single msg should consume the entire src sg */ | |
1220 | written = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip, | |
1221 | rctx->src_nents, datalen); | |
1222 | if (written < datalen) { | |
1223 | pr_err("%s(): failed to copy src sg to mbox msg", | |
1224 | __func__); | |
1225 | return -EFAULT; | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | if (pad_len) { | |
1230 | memset(rctx->msg_buf.spu_req_pad, 0, pad_len); | |
1231 | sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len); | |
1232 | } | |
1233 | ||
1234 | if (incl_icv) | |
1235 | sg_set_buf(sg++, rctx->msg_buf.digest, ctx->digestsize); | |
1236 | ||
1237 | stat_len = spu->spu_tx_status_len(); | |
1238 | if (stat_len) { | |
1239 | memset(rctx->msg_buf.tx_stat, 0, stat_len); | |
1240 | sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len); | |
1241 | } | |
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | /** | |
1246 | * handle_aead_req() - Submit a SPU request message for the next chunk of the | |
1247 | * current AEAD request. | |
1248 | * @rctx: Crypto request context | |
1249 | * | |
1250 | * Unlike other operation types, we assume the length of the request fits in | |
1251 | * a single SPU request message. aead_enqueue() makes sure this is true. | |
1252 | * Comments for other op types regarding threads applies here as well. | |
1253 | * | |
1254 | * Unlike incremental hash ops, where the spu returns the entire hash for | |
1255 | * truncated algs like sha-224, the SPU returns just the truncated hash in | |
1256 | * response to aead requests. So digestsize is always ctx->digestsize here. | |
1257 | * | |
1258 | * Return: -EINPROGRESS: crypto request has been accepted and result will be | |
1259 | * returned asynchronously | |
1260 | * Any other value indicates an error | |
1261 | */ | |
1262 | static int handle_aead_req(struct iproc_reqctx_s *rctx) | |
1263 | { | |
1264 | struct spu_hw *spu = &iproc_priv.spu; | |
1265 | struct crypto_async_request *areq = rctx->parent; | |
1266 | struct aead_request *req = container_of(areq, | |
1267 | struct aead_request, base); | |
1268 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1269 | int err; | |
1270 | unsigned int chunksize; | |
1271 | unsigned int resp_len; | |
1272 | u32 spu_hdr_len; | |
1273 | u32 db_size; | |
1274 | u32 stat_pad_len; | |
1275 | u32 pad_len; | |
1276 | struct brcm_message *mssg; /* mailbox message */ | |
1277 | struct spu_request_opts req_opts; | |
1278 | struct spu_cipher_parms cipher_parms; | |
1279 | struct spu_hash_parms hash_parms; | |
1280 | struct spu_aead_parms aead_parms; | |
1281 | int assoc_nents = 0; | |
1282 | bool incl_icv = false; | |
1283 | unsigned int digestsize = ctx->digestsize; | |
9d12ba86 RR |
1284 | |
1285 | /* number of entries in src and dst sg. Always includes SPU msg header. | |
1286 | */ | |
1287 | u8 rx_frag_num = 2; /* and STATUS */ | |
1288 | u8 tx_frag_num = 1; | |
1289 | ||
1290 | /* doing the whole thing at once */ | |
1291 | chunksize = rctx->total_todo; | |
1292 | ||
1293 | flow_log("%s: chunksize %u\n", __func__, chunksize); | |
1294 | ||
1295 | memset(&req_opts, 0, sizeof(req_opts)); | |
1296 | memset(&hash_parms, 0, sizeof(hash_parms)); | |
1297 | memset(&aead_parms, 0, sizeof(aead_parms)); | |
1298 | ||
1299 | req_opts.is_inbound = !(rctx->is_encrypt); | |
1300 | req_opts.auth_first = ctx->auth_first; | |
1301 | req_opts.is_aead = true; | |
1302 | req_opts.is_esp = ctx->is_esp; | |
1303 | ||
1304 | cipher_parms.alg = ctx->cipher.alg; | |
1305 | cipher_parms.mode = ctx->cipher.mode; | |
1306 | cipher_parms.type = ctx->cipher_type; | |
1307 | cipher_parms.key_buf = ctx->enckey; | |
1308 | cipher_parms.key_len = ctx->enckeylen; | |
1309 | cipher_parms.iv_buf = rctx->msg_buf.iv_ctr; | |
1310 | cipher_parms.iv_len = rctx->iv_ctr_len; | |
1311 | ||
1312 | hash_parms.alg = ctx->auth.alg; | |
1313 | hash_parms.mode = ctx->auth.mode; | |
1314 | hash_parms.type = HASH_TYPE_NONE; | |
1315 | hash_parms.key_buf = (u8 *)ctx->authkey; | |
1316 | hash_parms.key_len = ctx->authkeylen; | |
1317 | hash_parms.digestsize = digestsize; | |
1318 | ||
1319 | if ((ctx->auth.alg == HASH_ALG_SHA224) && | |
1320 | (ctx->authkeylen < SHA224_DIGEST_SIZE)) | |
1321 | hash_parms.key_len = SHA224_DIGEST_SIZE; | |
1322 | ||
1323 | aead_parms.assoc_size = req->assoclen; | |
1324 | if (ctx->is_esp && !ctx->is_rfc4543) { | |
1325 | /* | |
1326 | * 8-byte IV is included assoc data in request. SPU2 | |
1327 | * expects AAD to include just SPI and seqno. So | |
1328 | * subtract off the IV len. | |
1329 | */ | |
a59851d2 | 1330 | aead_parms.assoc_size -= GCM_RFC4106_IV_SIZE; |
9d12ba86 RR |
1331 | |
1332 | if (rctx->is_encrypt) { | |
1333 | aead_parms.return_iv = true; | |
a59851d2 | 1334 | aead_parms.ret_iv_len = GCM_RFC4106_IV_SIZE; |
9d12ba86 RR |
1335 | aead_parms.ret_iv_off = GCM_ESP_SALT_SIZE; |
1336 | } | |
1337 | } else { | |
1338 | aead_parms.ret_iv_len = 0; | |
1339 | } | |
1340 | ||
1341 | /* | |
1342 | * Count number of sg entries from the crypto API request that are to | |
1343 | * be included in this mailbox message. For dst sg, don't count space | |
1344 | * for digest. Digest gets caught in a separate buffer and copied back | |
1345 | * to dst sg when processing response. | |
1346 | */ | |
1347 | rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize); | |
1348 | rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize); | |
1349 | if (aead_parms.assoc_size) | |
1350 | assoc_nents = spu_sg_count(rctx->assoc, 0, | |
1351 | aead_parms.assoc_size); | |
1352 | ||
1353 | mssg = &rctx->mb_mssg; | |
1354 | ||
1355 | rctx->total_sent = chunksize; | |
1356 | rctx->src_sent = chunksize; | |
1357 | if (spu->spu_assoc_resp_len(ctx->cipher.mode, | |
1358 | aead_parms.assoc_size, | |
1359 | aead_parms.ret_iv_len, | |
1360 | rctx->is_encrypt)) | |
1361 | rx_frag_num++; | |
1362 | ||
1363 | aead_parms.iv_len = spu->spu_aead_ivlen(ctx->cipher.mode, | |
1364 | rctx->iv_ctr_len); | |
1365 | ||
1366 | if (ctx->auth.alg == HASH_ALG_AES) | |
a2e5d408 | 1367 | hash_parms.type = (enum hash_type)ctx->cipher_type; |
9d12ba86 RR |
1368 | |
1369 | /* General case AAD padding (CCM and RFC4543 special cases below) */ | |
1370 | aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1371 | aead_parms.assoc_size); | |
1372 | ||
1373 | /* General case data padding (CCM decrypt special case below) */ | |
1374 | aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1375 | chunksize); | |
1376 | ||
1377 | if (ctx->cipher.mode == CIPHER_MODE_CCM) { | |
1378 | /* | |
1379 | * for CCM, AAD len + 2 (rather than AAD len) needs to be | |
1380 | * 128-bit aligned | |
1381 | */ | |
1382 | aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len( | |
1383 | ctx->cipher.mode, | |
1384 | aead_parms.assoc_size + 2); | |
1385 | ||
1386 | /* | |
1387 | * And when decrypting CCM, need to pad without including | |
1388 | * size of ICV which is tacked on to end of chunk | |
1389 | */ | |
1390 | if (!rctx->is_encrypt) | |
1391 | aead_parms.data_pad_len = | |
1392 | spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, | |
1393 | chunksize - digestsize); | |
1394 | ||
1395 | /* CCM also requires software to rewrite portions of IV: */ | |
1396 | spu->spu_ccm_update_iv(digestsize, &cipher_parms, req->assoclen, | |
1397 | chunksize, rctx->is_encrypt, | |
1398 | ctx->is_esp); | |
1399 | } | |
1400 | ||
1401 | if (ctx->is_rfc4543) { | |
1402 | /* | |
1403 | * RFC4543: data is included in AAD, so don't pad after AAD | |
1404 | * and pad data based on both AAD + data size | |
1405 | */ | |
1406 | aead_parms.aad_pad_len = 0; | |
1407 | if (!rctx->is_encrypt) | |
1408 | aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len( | |
1409 | ctx->cipher.mode, | |
1410 | aead_parms.assoc_size + chunksize - | |
1411 | digestsize); | |
1412 | else | |
1413 | aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len( | |
1414 | ctx->cipher.mode, | |
1415 | aead_parms.assoc_size + chunksize); | |
1416 | ||
1417 | req_opts.is_rfc4543 = true; | |
1418 | } | |
1419 | ||
1420 | if (spu_req_incl_icv(ctx->cipher.mode, rctx->is_encrypt)) { | |
1421 | incl_icv = true; | |
1422 | tx_frag_num++; | |
1423 | /* Copy ICV from end of src scatterlist to digest buf */ | |
1424 | sg_copy_part_to_buf(req->src, rctx->msg_buf.digest, digestsize, | |
1425 | req->assoclen + rctx->total_sent - | |
1426 | digestsize); | |
1427 | } | |
1428 | ||
1429 | atomic64_add(chunksize, &iproc_priv.bytes_out); | |
1430 | ||
1431 | flow_log("%s()-sent chunksize:%u\n", __func__, chunksize); | |
1432 | ||
1433 | /* Prepend SPU header with type 3 BCM header */ | |
1434 | memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN); | |
1435 | ||
1436 | spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr + | |
1437 | BCM_HDR_LEN, &req_opts, | |
1438 | &cipher_parms, &hash_parms, | |
1439 | &aead_parms, chunksize); | |
1440 | ||
1441 | /* Determine total length of padding. Put all padding in one buffer. */ | |
1442 | db_size = spu_real_db_size(aead_parms.assoc_size, aead_parms.iv_len, 0, | |
1443 | chunksize, aead_parms.aad_pad_len, | |
1444 | aead_parms.data_pad_len, 0); | |
1445 | ||
1446 | stat_pad_len = spu->spu_wordalign_padlen(db_size); | |
1447 | ||
1448 | if (stat_pad_len) | |
1449 | rx_frag_num++; | |
1450 | pad_len = aead_parms.data_pad_len + stat_pad_len; | |
1451 | if (pad_len) { | |
1452 | tx_frag_num++; | |
1453 | spu->spu_request_pad(rctx->msg_buf.spu_req_pad, | |
1454 | aead_parms.data_pad_len, 0, | |
1455 | ctx->auth.alg, ctx->auth.mode, | |
1456 | rctx->total_sent, stat_pad_len); | |
1457 | } | |
1458 | ||
1459 | spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN, | |
1460 | spu_hdr_len); | |
1461 | dump_sg(rctx->assoc, 0, aead_parms.assoc_size); | |
1462 | packet_dump(" aead iv: ", rctx->msg_buf.iv_ctr, aead_parms.iv_len); | |
1463 | packet_log("BD:\n"); | |
1464 | dump_sg(rctx->src_sg, rctx->src_skip, chunksize); | |
1465 | packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len); | |
1466 | ||
1467 | /* | |
1468 | * Build mailbox message containing SPU request msg and rx buffers | |
1469 | * to catch response message | |
1470 | */ | |
1471 | memset(mssg, 0, sizeof(*mssg)); | |
1472 | mssg->type = BRCM_MESSAGE_SPU; | |
1473 | mssg->ctx = rctx; /* Will be returned in response */ | |
1474 | ||
1475 | /* Create rx scatterlist to catch result */ | |
1476 | rx_frag_num += rctx->dst_nents; | |
1477 | resp_len = chunksize; | |
1478 | ||
1479 | /* | |
1480 | * Always catch ICV in separate buffer. Have to for GCM/CCM because of | |
1481 | * padding. Have to for SHA-224 and other truncated SHAs because SPU | |
1482 | * sends entire digest back. | |
1483 | */ | |
1484 | rx_frag_num++; | |
1485 | ||
1486 | if (((ctx->cipher.mode == CIPHER_MODE_GCM) || | |
1487 | (ctx->cipher.mode == CIPHER_MODE_CCM)) && !rctx->is_encrypt) { | |
1488 | /* | |
1489 | * Input is ciphertxt plus ICV, but ICV not incl | |
1490 | * in output. | |
1491 | */ | |
1492 | resp_len -= ctx->digestsize; | |
1493 | if (resp_len == 0) | |
1494 | /* no rx frags to catch output data */ | |
1495 | rx_frag_num -= rctx->dst_nents; | |
1496 | } | |
1497 | ||
1498 | err = spu_aead_rx_sg_create(mssg, req, rctx, rx_frag_num, | |
1499 | aead_parms.assoc_size, | |
1500 | aead_parms.ret_iv_len, resp_len, digestsize, | |
1501 | stat_pad_len); | |
1502 | if (err) | |
1503 | return err; | |
1504 | ||
1505 | /* Create tx scatterlist containing SPU request message */ | |
1506 | tx_frag_num += rctx->src_nents; | |
1507 | tx_frag_num += assoc_nents; | |
1508 | if (aead_parms.aad_pad_len) | |
1509 | tx_frag_num++; | |
1510 | if (aead_parms.iv_len) | |
1511 | tx_frag_num++; | |
1512 | if (spu->spu_tx_status_len()) | |
1513 | tx_frag_num++; | |
1514 | err = spu_aead_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len, | |
1515 | rctx->assoc, aead_parms.assoc_size, | |
1516 | assoc_nents, aead_parms.iv_len, chunksize, | |
1517 | aead_parms.aad_pad_len, pad_len, incl_icv); | |
1518 | if (err) | |
1519 | return err; | |
1520 | ||
f0e2ce58 | 1521 | err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx); |
1522 | if (unlikely(err < 0)) | |
9d12ba86 | 1523 | return err; |
9d12ba86 RR |
1524 | |
1525 | return -EINPROGRESS; | |
1526 | } | |
1527 | ||
1528 | /** | |
1529 | * handle_aead_resp() - Process a SPU response message for an AEAD request. | |
1530 | * @rctx: Crypto request context | |
1531 | */ | |
1532 | static void handle_aead_resp(struct iproc_reqctx_s *rctx) | |
1533 | { | |
1534 | struct spu_hw *spu = &iproc_priv.spu; | |
1535 | struct crypto_async_request *areq = rctx->parent; | |
1536 | struct aead_request *req = container_of(areq, | |
1537 | struct aead_request, base); | |
1538 | struct iproc_ctx_s *ctx = rctx->ctx; | |
1539 | u32 payload_len; | |
1540 | unsigned int icv_offset; | |
1541 | u32 result_len; | |
1542 | ||
1543 | /* See how much data was returned */ | |
1544 | payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr); | |
1545 | flow_log("payload_len %u\n", payload_len); | |
1546 | ||
1547 | /* only count payload */ | |
1548 | atomic64_add(payload_len, &iproc_priv.bytes_in); | |
1549 | ||
1550 | if (req->assoclen) | |
1551 | packet_dump(" assoc_data ", rctx->msg_buf.a.resp_aad, | |
1552 | req->assoclen); | |
1553 | ||
1554 | /* | |
1555 | * Copy the ICV back to the destination | |
1556 | * buffer. In decrypt case, SPU gives us back the digest, but crypto | |
1557 | * API doesn't expect ICV in dst buffer. | |
1558 | */ | |
1559 | result_len = req->cryptlen; | |
1560 | if (rctx->is_encrypt) { | |
1561 | icv_offset = req->assoclen + rctx->total_sent; | |
1562 | packet_dump(" ICV: ", rctx->msg_buf.digest, ctx->digestsize); | |
1563 | flow_log("copying ICV to dst sg at offset %u\n", icv_offset); | |
1564 | sg_copy_part_from_buf(req->dst, rctx->msg_buf.digest, | |
1565 | ctx->digestsize, icv_offset); | |
1566 | result_len += ctx->digestsize; | |
1567 | } | |
1568 | ||
1569 | packet_log("response data: "); | |
1570 | dump_sg(req->dst, req->assoclen, result_len); | |
1571 | ||
1572 | atomic_inc(&iproc_priv.op_counts[SPU_OP_AEAD]); | |
1573 | if (ctx->cipher.alg == CIPHER_ALG_AES) { | |
1574 | if (ctx->cipher.mode == CIPHER_MODE_CCM) | |
1575 | atomic_inc(&iproc_priv.aead_cnt[AES_CCM]); | |
1576 | else if (ctx->cipher.mode == CIPHER_MODE_GCM) | |
1577 | atomic_inc(&iproc_priv.aead_cnt[AES_GCM]); | |
1578 | else | |
1579 | atomic_inc(&iproc_priv.aead_cnt[AUTHENC]); | |
1580 | } else { | |
1581 | atomic_inc(&iproc_priv.aead_cnt[AUTHENC]); | |
1582 | } | |
1583 | } | |
1584 | ||
1585 | /** | |
1586 | * spu_chunk_cleanup() - Do cleanup after processing one chunk of a request | |
1587 | * @rctx: request context | |
1588 | * | |
1589 | * Mailbox scatterlists are allocated for each chunk. So free them after | |
1590 | * processing each chunk. | |
1591 | */ | |
1592 | static void spu_chunk_cleanup(struct iproc_reqctx_s *rctx) | |
1593 | { | |
1594 | /* mailbox message used to tx request */ | |
1595 | struct brcm_message *mssg = &rctx->mb_mssg; | |
1596 | ||
1597 | kfree(mssg->spu.src); | |
1598 | kfree(mssg->spu.dst); | |
1599 | memset(mssg, 0, sizeof(struct brcm_message)); | |
1600 | } | |
1601 | ||
1602 | /** | |
1603 | * finish_req() - Used to invoke the complete callback from the requester when | |
1604 | * a request has been handled asynchronously. | |
1605 | * @rctx: Request context | |
1606 | * @err: Indicates whether the request was successful or not | |
1607 | * | |
1608 | * Ensures that cleanup has been done for request | |
1609 | */ | |
1610 | static void finish_req(struct iproc_reqctx_s *rctx, int err) | |
1611 | { | |
1612 | struct crypto_async_request *areq = rctx->parent; | |
1613 | ||
1614 | flow_log("%s() err:%d\n\n", __func__, err); | |
1615 | ||
1616 | /* No harm done if already called */ | |
1617 | spu_chunk_cleanup(rctx); | |
1618 | ||
1619 | if (areq) | |
1620 | areq->complete(areq, err); | |
1621 | } | |
1622 | ||
1623 | /** | |
1624 | * spu_rx_callback() - Callback from mailbox framework with a SPU response. | |
1625 | * @cl: mailbox client structure for SPU driver | |
1626 | * @msg: mailbox message containing SPU response | |
1627 | */ | |
1628 | static void spu_rx_callback(struct mbox_client *cl, void *msg) | |
1629 | { | |
1630 | struct spu_hw *spu = &iproc_priv.spu; | |
1631 | struct brcm_message *mssg = msg; | |
1632 | struct iproc_reqctx_s *rctx; | |
12b3cf90 | 1633 | int err; |
9d12ba86 RR |
1634 | |
1635 | rctx = mssg->ctx; | |
1636 | if (unlikely(!rctx)) { | |
1637 | /* This is fatal */ | |
1638 | pr_err("%s(): no request context", __func__); | |
1639 | err = -EFAULT; | |
1640 | goto cb_finish; | |
1641 | } | |
9d12ba86 RR |
1642 | |
1643 | /* process the SPU status */ | |
1644 | err = spu->spu_status_process(rctx->msg_buf.rx_stat); | |
1645 | if (err != 0) { | |
1646 | if (err == SPU_INVALID_ICV) | |
1647 | atomic_inc(&iproc_priv.bad_icv); | |
1648 | err = -EBADMSG; | |
1649 | goto cb_finish; | |
1650 | } | |
1651 | ||
1652 | /* Process the SPU response message */ | |
1653 | switch (rctx->ctx->alg->type) { | |
a9c01cd6 AB |
1654 | case CRYPTO_ALG_TYPE_SKCIPHER: |
1655 | handle_skcipher_resp(rctx); | |
9d12ba86 RR |
1656 | break; |
1657 | case CRYPTO_ALG_TYPE_AHASH: | |
1658 | handle_ahash_resp(rctx); | |
1659 | break; | |
1660 | case CRYPTO_ALG_TYPE_AEAD: | |
1661 | handle_aead_resp(rctx); | |
1662 | break; | |
1663 | default: | |
1664 | err = -EINVAL; | |
1665 | goto cb_finish; | |
1666 | } | |
1667 | ||
1668 | /* | |
1669 | * If this response does not complete the request, then send the next | |
1670 | * request chunk. | |
1671 | */ | |
1672 | if (rctx->total_sent < rctx->total_todo) { | |
1673 | /* Deallocate anything specific to previous chunk */ | |
1674 | spu_chunk_cleanup(rctx); | |
1675 | ||
1676 | switch (rctx->ctx->alg->type) { | |
a9c01cd6 AB |
1677 | case CRYPTO_ALG_TYPE_SKCIPHER: |
1678 | err = handle_skcipher_req(rctx); | |
9d12ba86 RR |
1679 | break; |
1680 | case CRYPTO_ALG_TYPE_AHASH: | |
1681 | err = handle_ahash_req(rctx); | |
1682 | if (err == -EAGAIN) | |
1683 | /* | |
1684 | * we saved data in hash carry, but tell crypto | |
1685 | * API we successfully completed request. | |
1686 | */ | |
1687 | err = 0; | |
1688 | break; | |
1689 | case CRYPTO_ALG_TYPE_AEAD: | |
1690 | err = handle_aead_req(rctx); | |
1691 | break; | |
1692 | default: | |
1693 | err = -EINVAL; | |
1694 | } | |
1695 | ||
1696 | if (err == -EINPROGRESS) | |
1697 | /* Successfully submitted request for next chunk */ | |
1698 | return; | |
1699 | } | |
1700 | ||
1701 | cb_finish: | |
1702 | finish_req(rctx, err); | |
1703 | } | |
1704 | ||
1705 | /* ==================== Kernel Cryptographic API ==================== */ | |
1706 | ||
1707 | /** | |
a9c01cd6 | 1708 | * skcipher_enqueue() - Handle skcipher encrypt or decrypt request. |
9d12ba86 RR |
1709 | * @req: Crypto API request |
1710 | * @encrypt: true if encrypting; false if decrypting | |
1711 | * | |
1712 | * Return: -EINPROGRESS if request accepted and result will be returned | |
1713 | * asynchronously | |
1714 | * < 0 if an error | |
1715 | */ | |
a9c01cd6 | 1716 | static int skcipher_enqueue(struct skcipher_request *req, bool encrypt) |
9d12ba86 | 1717 | { |
a9c01cd6 | 1718 | struct iproc_reqctx_s *rctx = skcipher_request_ctx(req); |
9d12ba86 | 1719 | struct iproc_ctx_s *ctx = |
a9c01cd6 | 1720 | crypto_skcipher_ctx(crypto_skcipher_reqtfm(req)); |
9d12ba86 RR |
1721 | int err; |
1722 | ||
1723 | flow_log("%s() enc:%u\n", __func__, encrypt); | |
1724 | ||
1725 | rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
1726 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
1727 | rctx->parent = &req->base; | |
1728 | rctx->is_encrypt = encrypt; | |
1729 | rctx->bd_suppress = false; | |
a9c01cd6 | 1730 | rctx->total_todo = req->cryptlen; |
9d12ba86 RR |
1731 | rctx->src_sent = 0; |
1732 | rctx->total_sent = 0; | |
1733 | rctx->total_received = 0; | |
1734 | rctx->ctx = ctx; | |
1735 | ||
1736 | /* Initialize current position in src and dst scatterlists */ | |
1737 | rctx->src_sg = req->src; | |
1738 | rctx->src_nents = 0; | |
1739 | rctx->src_skip = 0; | |
1740 | rctx->dst_sg = req->dst; | |
1741 | rctx->dst_nents = 0; | |
1742 | rctx->dst_skip = 0; | |
1743 | ||
1744 | if (ctx->cipher.mode == CIPHER_MODE_CBC || | |
1745 | ctx->cipher.mode == CIPHER_MODE_CTR || | |
1746 | ctx->cipher.mode == CIPHER_MODE_OFB || | |
1747 | ctx->cipher.mode == CIPHER_MODE_XTS || | |
1748 | ctx->cipher.mode == CIPHER_MODE_GCM || | |
1749 | ctx->cipher.mode == CIPHER_MODE_CCM) { | |
1750 | rctx->iv_ctr_len = | |
a9c01cd6 AB |
1751 | crypto_skcipher_ivsize(crypto_skcipher_reqtfm(req)); |
1752 | memcpy(rctx->msg_buf.iv_ctr, req->iv, rctx->iv_ctr_len); | |
9d12ba86 RR |
1753 | } else { |
1754 | rctx->iv_ctr_len = 0; | |
1755 | } | |
1756 | ||
1757 | /* Choose a SPU to process this request */ | |
1758 | rctx->chan_idx = select_channel(); | |
a9c01cd6 | 1759 | err = handle_skcipher_req(rctx); |
9d12ba86 RR |
1760 | if (err != -EINPROGRESS) |
1761 | /* synchronous result */ | |
1762 | spu_chunk_cleanup(rctx); | |
1763 | ||
1764 | return err; | |
1765 | } | |
1766 | ||
a9c01cd6 | 1767 | static int des_setkey(struct crypto_skcipher *cipher, const u8 *key, |
9d12ba86 RR |
1768 | unsigned int keylen) |
1769 | { | |
a9c01cd6 | 1770 | struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher); |
05a7238d | 1771 | int err; |
9d12ba86 | 1772 | |
a9c01cd6 | 1773 | err = verify_skcipher_des_key(cipher, key); |
05a7238d AB |
1774 | if (err) |
1775 | return err; | |
9d12ba86 | 1776 | |
05a7238d | 1777 | ctx->cipher_type = CIPHER_TYPE_DES; |
9d12ba86 RR |
1778 | return 0; |
1779 | } | |
1780 | ||
a9c01cd6 | 1781 | static int threedes_setkey(struct crypto_skcipher *cipher, const u8 *key, |
9d12ba86 RR |
1782 | unsigned int keylen) |
1783 | { | |
a9c01cd6 | 1784 | struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher); |
05a7238d | 1785 | int err; |
9d12ba86 | 1786 | |
a9c01cd6 | 1787 | err = verify_skcipher_des3_key(cipher, key); |
05a7238d AB |
1788 | if (err) |
1789 | return err; | |
9d12ba86 | 1790 | |
05a7238d | 1791 | ctx->cipher_type = CIPHER_TYPE_3DES; |
9d12ba86 RR |
1792 | return 0; |
1793 | } | |
1794 | ||
a9c01cd6 | 1795 | static int aes_setkey(struct crypto_skcipher *cipher, const u8 *key, |
9d12ba86 RR |
1796 | unsigned int keylen) |
1797 | { | |
a9c01cd6 | 1798 | struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher); |
9d12ba86 RR |
1799 | |
1800 | if (ctx->cipher.mode == CIPHER_MODE_XTS) | |
1801 | /* XTS includes two keys of equal length */ | |
1802 | keylen = keylen / 2; | |
1803 | ||
1804 | switch (keylen) { | |
1805 | case AES_KEYSIZE_128: | |
1806 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
1807 | break; | |
1808 | case AES_KEYSIZE_192: | |
1809 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
1810 | break; | |
1811 | case AES_KEYSIZE_256: | |
1812 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
1813 | break; | |
1814 | default: | |
9d12ba86 RR |
1815 | return -EINVAL; |
1816 | } | |
1817 | WARN_ON((ctx->max_payload != SPU_MAX_PAYLOAD_INF) && | |
1818 | ((ctx->max_payload % AES_BLOCK_SIZE) != 0)); | |
1819 | return 0; | |
1820 | } | |
1821 | ||
a9c01cd6 | 1822 | static int skcipher_setkey(struct crypto_skcipher *cipher, const u8 *key, |
9d12ba86 RR |
1823 | unsigned int keylen) |
1824 | { | |
1825 | struct spu_hw *spu = &iproc_priv.spu; | |
a9c01cd6 | 1826 | struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher); |
9d12ba86 RR |
1827 | struct spu_cipher_parms cipher_parms; |
1828 | u32 alloc_len = 0; | |
1829 | int err; | |
1830 | ||
a9c01cd6 | 1831 | flow_log("skcipher_setkey() keylen: %d\n", keylen); |
9d12ba86 RR |
1832 | flow_dump(" key: ", key, keylen); |
1833 | ||
1834 | switch (ctx->cipher.alg) { | |
1835 | case CIPHER_ALG_DES: | |
1836 | err = des_setkey(cipher, key, keylen); | |
1837 | break; | |
1838 | case CIPHER_ALG_3DES: | |
1839 | err = threedes_setkey(cipher, key, keylen); | |
1840 | break; | |
1841 | case CIPHER_ALG_AES: | |
1842 | err = aes_setkey(cipher, key, keylen); | |
1843 | break; | |
9d12ba86 RR |
1844 | default: |
1845 | pr_err("%s() Error: unknown cipher alg\n", __func__); | |
1846 | err = -EINVAL; | |
1847 | } | |
1848 | if (err) | |
1849 | return err; | |
1850 | ||
1dbab6b1 AB |
1851 | memcpy(ctx->enckey, key, keylen); |
1852 | ctx->enckeylen = keylen; | |
1853 | ||
9d12ba86 RR |
1854 | /* SPU needs XTS keys in the reverse order the crypto API presents */ |
1855 | if ((ctx->cipher.alg == CIPHER_ALG_AES) && | |
1856 | (ctx->cipher.mode == CIPHER_MODE_XTS)) { | |
1857 | unsigned int xts_keylen = keylen / 2; | |
1858 | ||
1859 | memcpy(ctx->enckey, key + xts_keylen, xts_keylen); | |
1860 | memcpy(ctx->enckey + xts_keylen, key, xts_keylen); | |
1861 | } | |
1862 | ||
1863 | if (spu->spu_type == SPU_TYPE_SPUM) | |
1864 | alloc_len = BCM_HDR_LEN + SPU_HEADER_ALLOC_LEN; | |
1865 | else if (spu->spu_type == SPU_TYPE_SPU2) | |
1866 | alloc_len = BCM_HDR_LEN + SPU2_HEADER_ALLOC_LEN; | |
1867 | memset(ctx->bcm_spu_req_hdr, 0, alloc_len); | |
1868 | cipher_parms.iv_buf = NULL; | |
a9c01cd6 | 1869 | cipher_parms.iv_len = crypto_skcipher_ivsize(cipher); |
9d12ba86 RR |
1870 | flow_log("%s: iv_len %u\n", __func__, cipher_parms.iv_len); |
1871 | ||
1872 | cipher_parms.alg = ctx->cipher.alg; | |
1873 | cipher_parms.mode = ctx->cipher.mode; | |
1874 | cipher_parms.type = ctx->cipher_type; | |
1875 | cipher_parms.key_buf = ctx->enckey; | |
1876 | cipher_parms.key_len = ctx->enckeylen; | |
1877 | ||
1878 | /* Prepend SPU request message with BCM header */ | |
1879 | memcpy(ctx->bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN); | |
1880 | ctx->spu_req_hdr_len = | |
1881 | spu->spu_cipher_req_init(ctx->bcm_spu_req_hdr + BCM_HDR_LEN, | |
1882 | &cipher_parms); | |
1883 | ||
1884 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, | |
1885 | ctx->enckeylen, | |
1886 | false); | |
1887 | ||
1888 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_CIPHER]); | |
1889 | ||
1890 | return 0; | |
1891 | } | |
1892 | ||
a9c01cd6 | 1893 | static int skcipher_encrypt(struct skcipher_request *req) |
9d12ba86 | 1894 | { |
a9c01cd6 | 1895 | flow_log("skcipher_encrypt() nbytes:%u\n", req->cryptlen); |
9d12ba86 | 1896 | |
a9c01cd6 | 1897 | return skcipher_enqueue(req, true); |
9d12ba86 RR |
1898 | } |
1899 | ||
a9c01cd6 | 1900 | static int skcipher_decrypt(struct skcipher_request *req) |
9d12ba86 | 1901 | { |
a9c01cd6 AB |
1902 | flow_log("skcipher_decrypt() nbytes:%u\n", req->cryptlen); |
1903 | return skcipher_enqueue(req, false); | |
9d12ba86 RR |
1904 | } |
1905 | ||
1906 | static int ahash_enqueue(struct ahash_request *req) | |
1907 | { | |
1908 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
1909 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
1910 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
12b3cf90 | 1911 | int err; |
9d12ba86 RR |
1912 | const char *alg_name; |
1913 | ||
1914 | flow_log("ahash_enqueue() nbytes:%u\n", req->nbytes); | |
1915 | ||
1916 | rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
1917 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
1918 | rctx->parent = &req->base; | |
1919 | rctx->ctx = ctx; | |
1920 | rctx->bd_suppress = true; | |
1921 | memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message)); | |
1922 | ||
1923 | /* Initialize position in src scatterlist */ | |
1924 | rctx->src_sg = req->src; | |
1925 | rctx->src_skip = 0; | |
1926 | rctx->src_nents = 0; | |
1927 | rctx->dst_sg = NULL; | |
1928 | rctx->dst_skip = 0; | |
1929 | rctx->dst_nents = 0; | |
1930 | ||
1931 | /* SPU2 hardware does not compute hash of zero length data */ | |
1932 | if ((rctx->is_final == 1) && (rctx->total_todo == 0) && | |
1933 | (iproc_priv.spu.spu_type == SPU_TYPE_SPU2)) { | |
1934 | alg_name = crypto_tfm_alg_name(crypto_ahash_tfm(tfm)); | |
1935 | flow_log("Doing %sfinal %s zero-len hash request in software\n", | |
1936 | rctx->is_final ? "" : "non-", alg_name); | |
1937 | err = do_shash((unsigned char *)alg_name, req->result, | |
1938 | NULL, 0, NULL, 0, ctx->authkey, | |
1939 | ctx->authkeylen); | |
1940 | if (err < 0) | |
1941 | flow_log("Hash request failed with error %d\n", err); | |
1942 | return err; | |
1943 | } | |
1944 | /* Choose a SPU to process this request */ | |
1945 | rctx->chan_idx = select_channel(); | |
1946 | ||
1947 | err = handle_ahash_req(rctx); | |
1948 | if (err != -EINPROGRESS) | |
1949 | /* synchronous result */ | |
1950 | spu_chunk_cleanup(rctx); | |
1951 | ||
1952 | if (err == -EAGAIN) | |
1953 | /* | |
1954 | * we saved data in hash carry, but tell crypto API | |
1955 | * we successfully completed request. | |
1956 | */ | |
1957 | err = 0; | |
1958 | ||
1959 | return err; | |
1960 | } | |
1961 | ||
1962 | static int __ahash_init(struct ahash_request *req) | |
1963 | { | |
1964 | struct spu_hw *spu = &iproc_priv.spu; | |
1965 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
1966 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
1967 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
1968 | ||
1969 | flow_log("%s()\n", __func__); | |
1970 | ||
1971 | /* Initialize the context */ | |
1972 | rctx->hash_carry_len = 0; | |
1973 | rctx->is_final = 0; | |
1974 | ||
1975 | rctx->total_todo = 0; | |
1976 | rctx->src_sent = 0; | |
1977 | rctx->total_sent = 0; | |
1978 | rctx->total_received = 0; | |
1979 | ||
1980 | ctx->digestsize = crypto_ahash_digestsize(tfm); | |
1981 | /* If we add a hash whose digest is larger, catch it here. */ | |
1982 | WARN_ON(ctx->digestsize > MAX_DIGEST_SIZE); | |
1983 | ||
1984 | rctx->is_sw_hmac = false; | |
1985 | ||
1986 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, 0, | |
1987 | true); | |
1988 | ||
1989 | return 0; | |
1990 | } | |
1991 | ||
1992 | /** | |
1993 | * spu_no_incr_hash() - Determine whether incremental hashing is supported. | |
1994 | * @ctx: Crypto session context | |
1995 | * | |
1996 | * SPU-2 does not support incremental hashing (we'll have to revisit and | |
1997 | * condition based on chip revision or device tree entry if future versions do | |
1998 | * support incremental hash) | |
1999 | * | |
2000 | * SPU-M also doesn't support incremental hashing of AES-XCBC | |
2001 | * | |
2002 | * Return: true if incremental hashing is not supported | |
2003 | * false otherwise | |
2004 | */ | |
dd508618 | 2005 | static bool spu_no_incr_hash(struct iproc_ctx_s *ctx) |
9d12ba86 RR |
2006 | { |
2007 | struct spu_hw *spu = &iproc_priv.spu; | |
2008 | ||
2009 | if (spu->spu_type == SPU_TYPE_SPU2) | |
2010 | return true; | |
2011 | ||
2012 | if ((ctx->auth.alg == HASH_ALG_AES) && | |
2013 | (ctx->auth.mode == HASH_MODE_XCBC)) | |
2014 | return true; | |
2015 | ||
2016 | /* Otherwise, incremental hashing is supported */ | |
2017 | return false; | |
2018 | } | |
2019 | ||
2020 | static int ahash_init(struct ahash_request *req) | |
2021 | { | |
2022 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2023 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2024 | const char *alg_name; | |
2025 | struct crypto_shash *hash; | |
2026 | int ret; | |
2027 | gfp_t gfp; | |
2028 | ||
2029 | if (spu_no_incr_hash(ctx)) { | |
2030 | /* | |
2031 | * If we get an incremental hashing request and it's not | |
2032 | * supported by the hardware, we need to handle it in software | |
2033 | * by calling synchronous hash functions. | |
2034 | */ | |
2035 | alg_name = crypto_tfm_alg_name(crypto_ahash_tfm(tfm)); | |
2036 | hash = crypto_alloc_shash(alg_name, 0, 0); | |
2037 | if (IS_ERR(hash)) { | |
2038 | ret = PTR_ERR(hash); | |
2039 | goto err; | |
2040 | } | |
2041 | ||
2042 | gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2043 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2044 | ctx->shash = kmalloc(sizeof(*ctx->shash) + | |
2045 | crypto_shash_descsize(hash), gfp); | |
2046 | if (!ctx->shash) { | |
2047 | ret = -ENOMEM; | |
2048 | goto err_hash; | |
2049 | } | |
2050 | ctx->shash->tfm = hash; | |
9d12ba86 RR |
2051 | |
2052 | /* Set the key using data we already have from setkey */ | |
2053 | if (ctx->authkeylen > 0) { | |
2054 | ret = crypto_shash_setkey(hash, ctx->authkey, | |
2055 | ctx->authkeylen); | |
2056 | if (ret) | |
2057 | goto err_shash; | |
2058 | } | |
2059 | ||
2060 | /* Initialize hash w/ this key and other params */ | |
2061 | ret = crypto_shash_init(ctx->shash); | |
2062 | if (ret) | |
2063 | goto err_shash; | |
2064 | } else { | |
2065 | /* Otherwise call the internal function which uses SPU hw */ | |
2066 | ret = __ahash_init(req); | |
2067 | } | |
2068 | ||
2069 | return ret; | |
2070 | ||
2071 | err_shash: | |
2072 | kfree(ctx->shash); | |
2073 | err_hash: | |
2074 | crypto_free_shash(hash); | |
2075 | err: | |
2076 | return ret; | |
2077 | } | |
2078 | ||
2079 | static int __ahash_update(struct ahash_request *req) | |
2080 | { | |
2081 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2082 | ||
2083 | flow_log("ahash_update() nbytes:%u\n", req->nbytes); | |
2084 | ||
2085 | if (!req->nbytes) | |
2086 | return 0; | |
2087 | rctx->total_todo += req->nbytes; | |
2088 | rctx->src_sent = 0; | |
2089 | ||
2090 | return ahash_enqueue(req); | |
2091 | } | |
2092 | ||
2093 | static int ahash_update(struct ahash_request *req) | |
2094 | { | |
2095 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2096 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2097 | u8 *tmpbuf; | |
2098 | int ret; | |
2099 | int nents; | |
2100 | gfp_t gfp; | |
2101 | ||
2102 | if (spu_no_incr_hash(ctx)) { | |
2103 | /* | |
2104 | * If we get an incremental hashing request and it's not | |
2105 | * supported by the hardware, we need to handle it in software | |
2106 | * by calling synchronous hash functions. | |
2107 | */ | |
2108 | if (req->src) | |
2109 | nents = sg_nents(req->src); | |
2110 | else | |
2111 | return -EINVAL; | |
2112 | ||
2113 | /* Copy data from req scatterlist to tmp buffer */ | |
2114 | gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2115 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2116 | tmpbuf = kmalloc(req->nbytes, gfp); | |
2117 | if (!tmpbuf) | |
2118 | return -ENOMEM; | |
2119 | ||
2120 | if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) != | |
2121 | req->nbytes) { | |
2122 | kfree(tmpbuf); | |
2123 | return -EINVAL; | |
2124 | } | |
2125 | ||
2126 | /* Call synchronous update */ | |
2127 | ret = crypto_shash_update(ctx->shash, tmpbuf, req->nbytes); | |
2128 | kfree(tmpbuf); | |
2129 | } else { | |
2130 | /* Otherwise call the internal function which uses SPU hw */ | |
2131 | ret = __ahash_update(req); | |
2132 | } | |
2133 | ||
2134 | return ret; | |
2135 | } | |
2136 | ||
2137 | static int __ahash_final(struct ahash_request *req) | |
2138 | { | |
2139 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2140 | ||
2141 | flow_log("ahash_final() nbytes:%u\n", req->nbytes); | |
2142 | ||
2143 | rctx->is_final = 1; | |
2144 | ||
2145 | return ahash_enqueue(req); | |
2146 | } | |
2147 | ||
2148 | static int ahash_final(struct ahash_request *req) | |
2149 | { | |
2150 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2151 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2152 | int ret; | |
2153 | ||
2154 | if (spu_no_incr_hash(ctx)) { | |
2155 | /* | |
2156 | * If we get an incremental hashing request and it's not | |
2157 | * supported by the hardware, we need to handle it in software | |
2158 | * by calling synchronous hash functions. | |
2159 | */ | |
2160 | ret = crypto_shash_final(ctx->shash, req->result); | |
2161 | ||
2162 | /* Done with hash, can deallocate it now */ | |
2163 | crypto_free_shash(ctx->shash->tfm); | |
2164 | kfree(ctx->shash); | |
2165 | ||
2166 | } else { | |
2167 | /* Otherwise call the internal function which uses SPU hw */ | |
2168 | ret = __ahash_final(req); | |
2169 | } | |
2170 | ||
2171 | return ret; | |
2172 | } | |
2173 | ||
2174 | static int __ahash_finup(struct ahash_request *req) | |
2175 | { | |
2176 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2177 | ||
2178 | flow_log("ahash_finup() nbytes:%u\n", req->nbytes); | |
2179 | ||
2180 | rctx->total_todo += req->nbytes; | |
2181 | rctx->src_sent = 0; | |
2182 | rctx->is_final = 1; | |
2183 | ||
2184 | return ahash_enqueue(req); | |
2185 | } | |
2186 | ||
2187 | static int ahash_finup(struct ahash_request *req) | |
2188 | { | |
2189 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2190 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2191 | u8 *tmpbuf; | |
2192 | int ret; | |
2193 | int nents; | |
2194 | gfp_t gfp; | |
2195 | ||
2196 | if (spu_no_incr_hash(ctx)) { | |
2197 | /* | |
2198 | * If we get an incremental hashing request and it's not | |
2199 | * supported by the hardware, we need to handle it in software | |
2200 | * by calling synchronous hash functions. | |
2201 | */ | |
2202 | if (req->src) { | |
2203 | nents = sg_nents(req->src); | |
2204 | } else { | |
2205 | ret = -EINVAL; | |
2206 | goto ahash_finup_exit; | |
2207 | } | |
2208 | ||
2209 | /* Copy data from req scatterlist to tmp buffer */ | |
2210 | gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2211 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2212 | tmpbuf = kmalloc(req->nbytes, gfp); | |
2213 | if (!tmpbuf) { | |
2214 | ret = -ENOMEM; | |
2215 | goto ahash_finup_exit; | |
2216 | } | |
2217 | ||
2218 | if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) != | |
2219 | req->nbytes) { | |
2220 | ret = -EINVAL; | |
2221 | goto ahash_finup_free; | |
2222 | } | |
2223 | ||
2224 | /* Call synchronous update */ | |
2225 | ret = crypto_shash_finup(ctx->shash, tmpbuf, req->nbytes, | |
2226 | req->result); | |
9d12ba86 RR |
2227 | } else { |
2228 | /* Otherwise call the internal function which uses SPU hw */ | |
2229 | return __ahash_finup(req); | |
2230 | } | |
2231 | ahash_finup_free: | |
2232 | kfree(tmpbuf); | |
2233 | ||
2234 | ahash_finup_exit: | |
2235 | /* Done with hash, can deallocate it now */ | |
2236 | crypto_free_shash(ctx->shash->tfm); | |
2237 | kfree(ctx->shash); | |
2238 | return ret; | |
2239 | } | |
2240 | ||
2241 | static int ahash_digest(struct ahash_request *req) | |
2242 | { | |
12b3cf90 | 2243 | int err; |
9d12ba86 RR |
2244 | |
2245 | flow_log("ahash_digest() nbytes:%u\n", req->nbytes); | |
2246 | ||
2247 | /* whole thing at once */ | |
2248 | err = __ahash_init(req); | |
2249 | if (!err) | |
2250 | err = __ahash_finup(req); | |
2251 | ||
2252 | return err; | |
2253 | } | |
2254 | ||
2255 | static int ahash_setkey(struct crypto_ahash *ahash, const u8 *key, | |
2256 | unsigned int keylen) | |
2257 | { | |
2258 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash); | |
2259 | ||
2260 | flow_log("%s() ahash:%p key:%p keylen:%u\n", | |
2261 | __func__, ahash, key, keylen); | |
2262 | flow_dump(" key: ", key, keylen); | |
2263 | ||
2264 | if (ctx->auth.alg == HASH_ALG_AES) { | |
2265 | switch (keylen) { | |
2266 | case AES_KEYSIZE_128: | |
2267 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
2268 | break; | |
2269 | case AES_KEYSIZE_192: | |
2270 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
2271 | break; | |
2272 | case AES_KEYSIZE_256: | |
2273 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
2274 | break; | |
2275 | default: | |
2276 | pr_err("%s() Error: Invalid key length\n", __func__); | |
2277 | return -EINVAL; | |
2278 | } | |
2279 | } else { | |
2280 | pr_err("%s() Error: unknown hash alg\n", __func__); | |
2281 | return -EINVAL; | |
2282 | } | |
2283 | memcpy(ctx->authkey, key, keylen); | |
2284 | ctx->authkeylen = keylen; | |
2285 | ||
2286 | return 0; | |
2287 | } | |
2288 | ||
2289 | static int ahash_export(struct ahash_request *req, void *out) | |
2290 | { | |
2291 | const struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2292 | struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)out; | |
2293 | ||
2294 | spu_exp->total_todo = rctx->total_todo; | |
2295 | spu_exp->total_sent = rctx->total_sent; | |
2296 | spu_exp->is_sw_hmac = rctx->is_sw_hmac; | |
2297 | memcpy(spu_exp->hash_carry, rctx->hash_carry, sizeof(rctx->hash_carry)); | |
2298 | spu_exp->hash_carry_len = rctx->hash_carry_len; | |
2299 | memcpy(spu_exp->incr_hash, rctx->incr_hash, sizeof(rctx->incr_hash)); | |
2300 | ||
2301 | return 0; | |
2302 | } | |
2303 | ||
2304 | static int ahash_import(struct ahash_request *req, const void *in) | |
2305 | { | |
2306 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2307 | struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)in; | |
2308 | ||
2309 | rctx->total_todo = spu_exp->total_todo; | |
2310 | rctx->total_sent = spu_exp->total_sent; | |
2311 | rctx->is_sw_hmac = spu_exp->is_sw_hmac; | |
2312 | memcpy(rctx->hash_carry, spu_exp->hash_carry, sizeof(rctx->hash_carry)); | |
2313 | rctx->hash_carry_len = spu_exp->hash_carry_len; | |
2314 | memcpy(rctx->incr_hash, spu_exp->incr_hash, sizeof(rctx->incr_hash)); | |
2315 | ||
2316 | return 0; | |
2317 | } | |
2318 | ||
2319 | static int ahash_hmac_setkey(struct crypto_ahash *ahash, const u8 *key, | |
2320 | unsigned int keylen) | |
2321 | { | |
2322 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash); | |
2323 | unsigned int blocksize = | |
2324 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash)); | |
2325 | unsigned int digestsize = crypto_ahash_digestsize(ahash); | |
2326 | unsigned int index; | |
2327 | int rc; | |
2328 | ||
2329 | flow_log("%s() ahash:%p key:%p keylen:%u blksz:%u digestsz:%u\n", | |
2330 | __func__, ahash, key, keylen, blocksize, digestsize); | |
2331 | flow_dump(" key: ", key, keylen); | |
2332 | ||
2333 | if (keylen > blocksize) { | |
2334 | switch (ctx->auth.alg) { | |
2335 | case HASH_ALG_MD5: | |
2336 | rc = do_shash("md5", ctx->authkey, key, keylen, NULL, | |
2337 | 0, NULL, 0); | |
2338 | break; | |
2339 | case HASH_ALG_SHA1: | |
2340 | rc = do_shash("sha1", ctx->authkey, key, keylen, NULL, | |
2341 | 0, NULL, 0); | |
2342 | break; | |
2343 | case HASH_ALG_SHA224: | |
2344 | rc = do_shash("sha224", ctx->authkey, key, keylen, NULL, | |
2345 | 0, NULL, 0); | |
2346 | break; | |
2347 | case HASH_ALG_SHA256: | |
2348 | rc = do_shash("sha256", ctx->authkey, key, keylen, NULL, | |
2349 | 0, NULL, 0); | |
2350 | break; | |
2351 | case HASH_ALG_SHA384: | |
2352 | rc = do_shash("sha384", ctx->authkey, key, keylen, NULL, | |
2353 | 0, NULL, 0); | |
2354 | break; | |
2355 | case HASH_ALG_SHA512: | |
2356 | rc = do_shash("sha512", ctx->authkey, key, keylen, NULL, | |
2357 | 0, NULL, 0); | |
2358 | break; | |
2359 | case HASH_ALG_SHA3_224: | |
2360 | rc = do_shash("sha3-224", ctx->authkey, key, keylen, | |
2361 | NULL, 0, NULL, 0); | |
2362 | break; | |
2363 | case HASH_ALG_SHA3_256: | |
2364 | rc = do_shash("sha3-256", ctx->authkey, key, keylen, | |
2365 | NULL, 0, NULL, 0); | |
2366 | break; | |
2367 | case HASH_ALG_SHA3_384: | |
2368 | rc = do_shash("sha3-384", ctx->authkey, key, keylen, | |
2369 | NULL, 0, NULL, 0); | |
2370 | break; | |
2371 | case HASH_ALG_SHA3_512: | |
2372 | rc = do_shash("sha3-512", ctx->authkey, key, keylen, | |
2373 | NULL, 0, NULL, 0); | |
2374 | break; | |
2375 | default: | |
2376 | pr_err("%s() Error: unknown hash alg\n", __func__); | |
2377 | return -EINVAL; | |
2378 | } | |
2379 | if (rc < 0) { | |
2380 | pr_err("%s() Error %d computing shash for %s\n", | |
2381 | __func__, rc, hash_alg_name[ctx->auth.alg]); | |
2382 | return rc; | |
2383 | } | |
2384 | ctx->authkeylen = digestsize; | |
2385 | ||
2386 | flow_log(" keylen > digestsize... hashed\n"); | |
2387 | flow_dump(" newkey: ", ctx->authkey, ctx->authkeylen); | |
2388 | } else { | |
2389 | memcpy(ctx->authkey, key, keylen); | |
2390 | ctx->authkeylen = keylen; | |
2391 | } | |
2392 | ||
2393 | /* | |
2394 | * Full HMAC operation in SPUM is not verified, | |
2395 | * So keeping the generation of IPAD, OPAD and | |
2396 | * outer hashing in software. | |
2397 | */ | |
2398 | if (iproc_priv.spu.spu_type == SPU_TYPE_SPUM) { | |
2399 | memcpy(ctx->ipad, ctx->authkey, ctx->authkeylen); | |
2400 | memset(ctx->ipad + ctx->authkeylen, 0, | |
2401 | blocksize - ctx->authkeylen); | |
2402 | ctx->authkeylen = 0; | |
2403 | memcpy(ctx->opad, ctx->ipad, blocksize); | |
2404 | ||
2405 | for (index = 0; index < blocksize; index++) { | |
1126d47d CL |
2406 | ctx->ipad[index] ^= HMAC_IPAD_VALUE; |
2407 | ctx->opad[index] ^= HMAC_OPAD_VALUE; | |
9d12ba86 RR |
2408 | } |
2409 | ||
2410 | flow_dump(" ipad: ", ctx->ipad, blocksize); | |
2411 | flow_dump(" opad: ", ctx->opad, blocksize); | |
2412 | } | |
2413 | ctx->digestsize = digestsize; | |
2414 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_HMAC]); | |
2415 | ||
2416 | return 0; | |
2417 | } | |
2418 | ||
2419 | static int ahash_hmac_init(struct ahash_request *req) | |
2420 | { | |
2421 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2422 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2423 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2424 | unsigned int blocksize = | |
2425 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
2426 | ||
2427 | flow_log("ahash_hmac_init()\n"); | |
2428 | ||
2429 | /* init the context as a hash */ | |
2430 | ahash_init(req); | |
2431 | ||
2432 | if (!spu_no_incr_hash(ctx)) { | |
2433 | /* SPU-M can do incr hashing but needs sw for outer HMAC */ | |
2434 | rctx->is_sw_hmac = true; | |
2435 | ctx->auth.mode = HASH_MODE_HASH; | |
2436 | /* start with a prepended ipad */ | |
2437 | memcpy(rctx->hash_carry, ctx->ipad, blocksize); | |
2438 | rctx->hash_carry_len = blocksize; | |
2439 | rctx->total_todo += blocksize; | |
2440 | } | |
2441 | ||
2442 | return 0; | |
2443 | } | |
2444 | ||
2445 | static int ahash_hmac_update(struct ahash_request *req) | |
2446 | { | |
2447 | flow_log("ahash_hmac_update() nbytes:%u\n", req->nbytes); | |
2448 | ||
2449 | if (!req->nbytes) | |
2450 | return 0; | |
2451 | ||
2452 | return ahash_update(req); | |
2453 | } | |
2454 | ||
2455 | static int ahash_hmac_final(struct ahash_request *req) | |
2456 | { | |
2457 | flow_log("ahash_hmac_final() nbytes:%u\n", req->nbytes); | |
2458 | ||
2459 | return ahash_final(req); | |
2460 | } | |
2461 | ||
2462 | static int ahash_hmac_finup(struct ahash_request *req) | |
2463 | { | |
2464 | flow_log("ahash_hmac_finupl() nbytes:%u\n", req->nbytes); | |
2465 | ||
2466 | return ahash_finup(req); | |
2467 | } | |
2468 | ||
2469 | static int ahash_hmac_digest(struct ahash_request *req) | |
2470 | { | |
2471 | struct iproc_reqctx_s *rctx = ahash_request_ctx(req); | |
2472 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
2473 | struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm); | |
2474 | unsigned int blocksize = | |
2475 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
2476 | ||
2477 | flow_log("ahash_hmac_digest() nbytes:%u\n", req->nbytes); | |
2478 | ||
2479 | /* Perform initialization and then call finup */ | |
2480 | __ahash_init(req); | |
2481 | ||
2482 | if (iproc_priv.spu.spu_type == SPU_TYPE_SPU2) { | |
2483 | /* | |
2484 | * SPU2 supports full HMAC implementation in the | |
2485 | * hardware, need not to generate IPAD, OPAD and | |
2486 | * outer hash in software. | |
2487 | * Only for hash key len > hash block size, SPU2 | |
2488 | * expects to perform hashing on the key, shorten | |
2489 | * it to digest size and feed it as hash key. | |
2490 | */ | |
2491 | rctx->is_sw_hmac = false; | |
2492 | ctx->auth.mode = HASH_MODE_HMAC; | |
2493 | } else { | |
2494 | rctx->is_sw_hmac = true; | |
2495 | ctx->auth.mode = HASH_MODE_HASH; | |
2496 | /* start with a prepended ipad */ | |
2497 | memcpy(rctx->hash_carry, ctx->ipad, blocksize); | |
2498 | rctx->hash_carry_len = blocksize; | |
2499 | rctx->total_todo += blocksize; | |
2500 | } | |
2501 | ||
2502 | return __ahash_finup(req); | |
2503 | } | |
2504 | ||
2505 | /* aead helpers */ | |
2506 | ||
2507 | static int aead_need_fallback(struct aead_request *req) | |
2508 | { | |
2509 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2510 | struct spu_hw *spu = &iproc_priv.spu; | |
2511 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2512 | struct iproc_ctx_s *ctx = crypto_aead_ctx(aead); | |
2513 | u32 payload_len; | |
2514 | ||
2515 | /* | |
2516 | * SPU hardware cannot handle the AES-GCM/CCM case where plaintext | |
2517 | * and AAD are both 0 bytes long. So use fallback in this case. | |
2518 | */ | |
2519 | if (((ctx->cipher.mode == CIPHER_MODE_GCM) || | |
2520 | (ctx->cipher.mode == CIPHER_MODE_CCM)) && | |
2521 | (req->assoclen == 0)) { | |
2522 | if ((rctx->is_encrypt && (req->cryptlen == 0)) || | |
2523 | (!rctx->is_encrypt && (req->cryptlen == ctx->digestsize))) { | |
2524 | flow_log("AES GCM/CCM needs fallback for 0 len req\n"); | |
2525 | return 1; | |
2526 | } | |
2527 | } | |
2528 | ||
2529 | /* SPU-M hardware only supports CCM digest size of 8, 12, or 16 bytes */ | |
2530 | if ((ctx->cipher.mode == CIPHER_MODE_CCM) && | |
2531 | (spu->spu_type == SPU_TYPE_SPUM) && | |
2532 | (ctx->digestsize != 8) && (ctx->digestsize != 12) && | |
2533 | (ctx->digestsize != 16)) { | |
b1a4b182 | 2534 | flow_log("%s() AES CCM needs fallback for digest size %d\n", |
9d12ba86 RR |
2535 | __func__, ctx->digestsize); |
2536 | return 1; | |
2537 | } | |
2538 | ||
2539 | /* | |
2540 | * SPU-M on NSP has an issue where AES-CCM hash is not correct | |
2541 | * when AAD size is 0 | |
2542 | */ | |
2543 | if ((ctx->cipher.mode == CIPHER_MODE_CCM) && | |
2544 | (spu->spu_subtype == SPU_SUBTYPE_SPUM_NSP) && | |
2545 | (req->assoclen == 0)) { | |
2546 | flow_log("%s() AES_CCM needs fallback for 0 len AAD on NSP\n", | |
2547 | __func__); | |
2548 | return 1; | |
2549 | } | |
2550 | ||
b3553eff IP |
2551 | /* |
2552 | * RFC4106 and RFC4543 cannot handle the case where AAD is other than | |
2553 | * 16 or 20 bytes long. So use fallback in this case. | |
2554 | */ | |
2555 | if (ctx->cipher.mode == CIPHER_MODE_GCM && | |
2556 | ctx->cipher.alg == CIPHER_ALG_AES && | |
2557 | rctx->iv_ctr_len == GCM_RFC4106_IV_SIZE && | |
2558 | req->assoclen != 16 && req->assoclen != 20) { | |
2559 | flow_log("RFC4106/RFC4543 needs fallback for assoclen" | |
2560 | " other than 16 or 20 bytes\n"); | |
2561 | return 1; | |
2562 | } | |
2563 | ||
9d12ba86 RR |
2564 | payload_len = req->cryptlen; |
2565 | if (spu->spu_type == SPU_TYPE_SPUM) | |
2566 | payload_len += req->assoclen; | |
2567 | ||
2568 | flow_log("%s() payload len: %u\n", __func__, payload_len); | |
2569 | ||
2570 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
2571 | return 0; | |
2572 | else | |
2573 | return payload_len > ctx->max_payload; | |
2574 | } | |
2575 | ||
2576 | static void aead_complete(struct crypto_async_request *areq, int err) | |
2577 | { | |
2578 | struct aead_request *req = | |
2579 | container_of(areq, struct aead_request, base); | |
2580 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2581 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2582 | ||
2583 | flow_log("%s() err:%d\n", __func__, err); | |
2584 | ||
2585 | areq->tfm = crypto_aead_tfm(aead); | |
2586 | ||
2587 | areq->complete = rctx->old_complete; | |
2588 | areq->data = rctx->old_data; | |
2589 | ||
2590 | areq->complete(areq, err); | |
2591 | } | |
2592 | ||
2593 | static int aead_do_fallback(struct aead_request *req, bool is_encrypt) | |
2594 | { | |
2595 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2596 | struct crypto_tfm *tfm = crypto_aead_tfm(aead); | |
2597 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2598 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
2599 | int err; | |
2600 | u32 req_flags; | |
2601 | ||
2602 | flow_log("%s() enc:%u\n", __func__, is_encrypt); | |
2603 | ||
2604 | if (ctx->fallback_cipher) { | |
2605 | /* Store the cipher tfm and then use the fallback tfm */ | |
2606 | rctx->old_tfm = tfm; | |
2607 | aead_request_set_tfm(req, ctx->fallback_cipher); | |
2608 | /* | |
2609 | * Save the callback and chain ourselves in, so we can restore | |
2610 | * the tfm | |
2611 | */ | |
2612 | rctx->old_complete = req->base.complete; | |
2613 | rctx->old_data = req->base.data; | |
2614 | req_flags = aead_request_flags(req); | |
2615 | aead_request_set_callback(req, req_flags, aead_complete, req); | |
2616 | err = is_encrypt ? crypto_aead_encrypt(req) : | |
2617 | crypto_aead_decrypt(req); | |
2618 | ||
2619 | if (err == 0) { | |
2620 | /* | |
2621 | * fallback was synchronous (did not return | |
2622 | * -EINPROGRESS). So restore request state here. | |
2623 | */ | |
2624 | aead_request_set_callback(req, req_flags, | |
2625 | rctx->old_complete, req); | |
2626 | req->base.data = rctx->old_data; | |
2627 | aead_request_set_tfm(req, aead); | |
2628 | flow_log("%s() fallback completed successfully\n\n", | |
2629 | __func__); | |
2630 | } | |
2631 | } else { | |
2632 | err = -EINVAL; | |
2633 | } | |
2634 | ||
2635 | return err; | |
2636 | } | |
2637 | ||
2638 | static int aead_enqueue(struct aead_request *req, bool is_encrypt) | |
2639 | { | |
2640 | struct iproc_reqctx_s *rctx = aead_request_ctx(req); | |
2641 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2642 | struct iproc_ctx_s *ctx = crypto_aead_ctx(aead); | |
2643 | int err; | |
2644 | ||
2645 | flow_log("%s() enc:%u\n", __func__, is_encrypt); | |
2646 | ||
2647 | if (req->assoclen > MAX_ASSOC_SIZE) { | |
2648 | pr_err | |
2649 | ("%s() Error: associated data too long. (%u > %u bytes)\n", | |
2650 | __func__, req->assoclen, MAX_ASSOC_SIZE); | |
2651 | return -EINVAL; | |
2652 | } | |
2653 | ||
2654 | rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
2655 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
2656 | rctx->parent = &req->base; | |
2657 | rctx->is_encrypt = is_encrypt; | |
2658 | rctx->bd_suppress = false; | |
2659 | rctx->total_todo = req->cryptlen; | |
2660 | rctx->src_sent = 0; | |
2661 | rctx->total_sent = 0; | |
2662 | rctx->total_received = 0; | |
2663 | rctx->is_sw_hmac = false; | |
2664 | rctx->ctx = ctx; | |
2665 | memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message)); | |
2666 | ||
2667 | /* assoc data is at start of src sg */ | |
2668 | rctx->assoc = req->src; | |
2669 | ||
2670 | /* | |
2671 | * Init current position in src scatterlist to be after assoc data. | |
2672 | * src_skip set to buffer offset where data begins. (Assoc data could | |
2673 | * end in the middle of a buffer.) | |
2674 | */ | |
2675 | if (spu_sg_at_offset(req->src, req->assoclen, &rctx->src_sg, | |
2676 | &rctx->src_skip) < 0) { | |
2677 | pr_err("%s() Error: Unable to find start of src data\n", | |
2678 | __func__); | |
2679 | return -EINVAL; | |
2680 | } | |
2681 | ||
2682 | rctx->src_nents = 0; | |
2683 | rctx->dst_nents = 0; | |
2684 | if (req->dst == req->src) { | |
2685 | rctx->dst_sg = rctx->src_sg; | |
2686 | rctx->dst_skip = rctx->src_skip; | |
2687 | } else { | |
2688 | /* | |
2689 | * Expect req->dst to have room for assoc data followed by | |
2690 | * output data and ICV, if encrypt. So initialize dst_sg | |
2691 | * to point beyond assoc len offset. | |
2692 | */ | |
2693 | if (spu_sg_at_offset(req->dst, req->assoclen, &rctx->dst_sg, | |
2694 | &rctx->dst_skip) < 0) { | |
2695 | pr_err("%s() Error: Unable to find start of dst data\n", | |
2696 | __func__); | |
2697 | return -EINVAL; | |
2698 | } | |
2699 | } | |
2700 | ||
2701 | if (ctx->cipher.mode == CIPHER_MODE_CBC || | |
2702 | ctx->cipher.mode == CIPHER_MODE_CTR || | |
2703 | ctx->cipher.mode == CIPHER_MODE_OFB || | |
2704 | ctx->cipher.mode == CIPHER_MODE_XTS || | |
2705 | ctx->cipher.mode == CIPHER_MODE_GCM) { | |
2706 | rctx->iv_ctr_len = | |
2707 | ctx->salt_len + | |
2708 | crypto_aead_ivsize(crypto_aead_reqtfm(req)); | |
2709 | } else if (ctx->cipher.mode == CIPHER_MODE_CCM) { | |
2710 | rctx->iv_ctr_len = CCM_AES_IV_SIZE; | |
2711 | } else { | |
2712 | rctx->iv_ctr_len = 0; | |
2713 | } | |
2714 | ||
2715 | rctx->hash_carry_len = 0; | |
2716 | ||
2717 | flow_log(" src sg: %p\n", req->src); | |
2718 | flow_log(" rctx->src_sg: %p, src_skip %u\n", | |
2719 | rctx->src_sg, rctx->src_skip); | |
2720 | flow_log(" assoc: %p, assoclen %u\n", rctx->assoc, req->assoclen); | |
2721 | flow_log(" dst sg: %p\n", req->dst); | |
2722 | flow_log(" rctx->dst_sg: %p, dst_skip %u\n", | |
2723 | rctx->dst_sg, rctx->dst_skip); | |
2724 | flow_log(" iv_ctr_len:%u\n", rctx->iv_ctr_len); | |
2725 | flow_dump(" iv: ", req->iv, rctx->iv_ctr_len); | |
2726 | flow_log(" authkeylen:%u\n", ctx->authkeylen); | |
2727 | flow_log(" is_esp: %s\n", ctx->is_esp ? "yes" : "no"); | |
2728 | ||
2729 | if (ctx->max_payload == SPU_MAX_PAYLOAD_INF) | |
2730 | flow_log(" max_payload infinite"); | |
2731 | else | |
2732 | flow_log(" max_payload: %u\n", ctx->max_payload); | |
2733 | ||
2734 | if (unlikely(aead_need_fallback(req))) | |
2735 | return aead_do_fallback(req, is_encrypt); | |
2736 | ||
2737 | /* | |
2738 | * Do memory allocations for request after fallback check, because if we | |
2739 | * do fallback, we won't call finish_req() to dealloc. | |
2740 | */ | |
2741 | if (rctx->iv_ctr_len) { | |
2742 | if (ctx->salt_len) | |
2743 | memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset, | |
2744 | ctx->salt, ctx->salt_len); | |
2745 | memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset + ctx->salt_len, | |
2746 | req->iv, | |
2747 | rctx->iv_ctr_len - ctx->salt_len - ctx->salt_offset); | |
2748 | } | |
2749 | ||
2750 | rctx->chan_idx = select_channel(); | |
2751 | err = handle_aead_req(rctx); | |
2752 | if (err != -EINPROGRESS) | |
2753 | /* synchronous result */ | |
2754 | spu_chunk_cleanup(rctx); | |
2755 | ||
2756 | return err; | |
2757 | } | |
2758 | ||
2759 | static int aead_authenc_setkey(struct crypto_aead *cipher, | |
2760 | const u8 *key, unsigned int keylen) | |
2761 | { | |
2762 | struct spu_hw *spu = &iproc_priv.spu; | |
2763 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
2764 | struct crypto_tfm *tfm = crypto_aead_tfm(cipher); | |
ab57b335 EB |
2765 | struct crypto_authenc_keys keys; |
2766 | int ret; | |
9d12ba86 RR |
2767 | |
2768 | flow_log("%s() aead:%p key:%p keylen:%u\n", __func__, cipher, key, | |
2769 | keylen); | |
2770 | flow_dump(" key: ", key, keylen); | |
2771 | ||
ab57b335 EB |
2772 | ret = crypto_authenc_extractkeys(&keys, key, keylen); |
2773 | if (ret) | |
9d12ba86 | 2774 | goto badkey; |
9d12ba86 | 2775 | |
ab57b335 EB |
2776 | if (keys.enckeylen > MAX_KEY_SIZE || |
2777 | keys.authkeylen > MAX_KEY_SIZE) | |
9d12ba86 RR |
2778 | goto badkey; |
2779 | ||
ab57b335 EB |
2780 | ctx->enckeylen = keys.enckeylen; |
2781 | ctx->authkeylen = keys.authkeylen; | |
9d12ba86 | 2782 | |
ab57b335 | 2783 | memcpy(ctx->enckey, keys.enckey, keys.enckeylen); |
9d12ba86 RR |
2784 | /* May end up padding auth key. So make sure it's zeroed. */ |
2785 | memset(ctx->authkey, 0, sizeof(ctx->authkey)); | |
ab57b335 | 2786 | memcpy(ctx->authkey, keys.authkey, keys.authkeylen); |
9d12ba86 RR |
2787 | |
2788 | switch (ctx->alg->cipher_info.alg) { | |
2789 | case CIPHER_ALG_DES: | |
05a7238d AB |
2790 | if (verify_aead_des_key(cipher, keys.enckey, keys.enckeylen)) |
2791 | return -EINVAL; | |
9d12ba86 | 2792 | |
05a7238d | 2793 | ctx->cipher_type = CIPHER_TYPE_DES; |
9d12ba86 RR |
2794 | break; |
2795 | case CIPHER_ALG_3DES: | |
05a7238d | 2796 | if (verify_aead_des3_key(cipher, keys.enckey, keys.enckeylen)) |
9d12ba86 | 2797 | return -EINVAL; |
05a7238d AB |
2798 | |
2799 | ctx->cipher_type = CIPHER_TYPE_3DES; | |
9d12ba86 RR |
2800 | break; |
2801 | case CIPHER_ALG_AES: | |
2802 | switch (ctx->enckeylen) { | |
2803 | case AES_KEYSIZE_128: | |
2804 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
2805 | break; | |
2806 | case AES_KEYSIZE_192: | |
2807 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
2808 | break; | |
2809 | case AES_KEYSIZE_256: | |
2810 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
2811 | break; | |
2812 | default: | |
2813 | goto badkey; | |
2814 | } | |
2815 | break; | |
9d12ba86 RR |
2816 | default: |
2817 | pr_err("%s() Error: Unknown cipher alg\n", __func__); | |
2818 | return -EINVAL; | |
2819 | } | |
2820 | ||
2821 | flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen, | |
2822 | ctx->authkeylen); | |
2823 | flow_dump(" enc: ", ctx->enckey, ctx->enckeylen); | |
2824 | flow_dump(" auth: ", ctx->authkey, ctx->authkeylen); | |
2825 | ||
2826 | /* setkey the fallback just in case we needto use it */ | |
2827 | if (ctx->fallback_cipher) { | |
2828 | flow_log(" running fallback setkey()\n"); | |
2829 | ||
2830 | ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK; | |
2831 | ctx->fallback_cipher->base.crt_flags |= | |
2832 | tfm->crt_flags & CRYPTO_TFM_REQ_MASK; | |
ab57b335 | 2833 | ret = crypto_aead_setkey(ctx->fallback_cipher, key, keylen); |
af5034e8 | 2834 | if (ret) |
9d12ba86 | 2835 | flow_log(" fallback setkey() returned:%d\n", ret); |
9d12ba86 RR |
2836 | } |
2837 | ||
2838 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, | |
2839 | ctx->enckeylen, | |
2840 | false); | |
2841 | ||
2842 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]); | |
2843 | ||
2844 | return ret; | |
2845 | ||
2846 | badkey: | |
2847 | ctx->enckeylen = 0; | |
2848 | ctx->authkeylen = 0; | |
2849 | ctx->digestsize = 0; | |
2850 | ||
9d12ba86 RR |
2851 | return -EINVAL; |
2852 | } | |
2853 | ||
2854 | static int aead_gcm_ccm_setkey(struct crypto_aead *cipher, | |
2855 | const u8 *key, unsigned int keylen) | |
2856 | { | |
2857 | struct spu_hw *spu = &iproc_priv.spu; | |
2858 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
2859 | struct crypto_tfm *tfm = crypto_aead_tfm(cipher); | |
2860 | ||
2861 | int ret = 0; | |
2862 | ||
2863 | flow_log("%s() keylen:%u\n", __func__, keylen); | |
2864 | flow_dump(" key: ", key, keylen); | |
2865 | ||
2866 | if (!ctx->is_esp) | |
2867 | ctx->digestsize = keylen; | |
2868 | ||
2869 | ctx->enckeylen = keylen; | |
2870 | ctx->authkeylen = 0; | |
9d12ba86 RR |
2871 | |
2872 | switch (ctx->enckeylen) { | |
2873 | case AES_KEYSIZE_128: | |
2874 | ctx->cipher_type = CIPHER_TYPE_AES128; | |
2875 | break; | |
2876 | case AES_KEYSIZE_192: | |
2877 | ctx->cipher_type = CIPHER_TYPE_AES192; | |
2878 | break; | |
2879 | case AES_KEYSIZE_256: | |
2880 | ctx->cipher_type = CIPHER_TYPE_AES256; | |
2881 | break; | |
2882 | default: | |
2883 | goto badkey; | |
2884 | } | |
2885 | ||
10a2f0b3 HX |
2886 | memcpy(ctx->enckey, key, ctx->enckeylen); |
2887 | ||
9d12ba86 RR |
2888 | flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen, |
2889 | ctx->authkeylen); | |
2890 | flow_dump(" enc: ", ctx->enckey, ctx->enckeylen); | |
2891 | flow_dump(" auth: ", ctx->authkey, ctx->authkeylen); | |
2892 | ||
2893 | /* setkey the fallback just in case we need to use it */ | |
2894 | if (ctx->fallback_cipher) { | |
2895 | flow_log(" running fallback setkey()\n"); | |
2896 | ||
2897 | ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK; | |
2898 | ctx->fallback_cipher->base.crt_flags |= | |
2899 | tfm->crt_flags & CRYPTO_TFM_REQ_MASK; | |
2900 | ret = crypto_aead_setkey(ctx->fallback_cipher, key, | |
2901 | keylen + ctx->salt_len); | |
af5034e8 | 2902 | if (ret) |
9d12ba86 | 2903 | flow_log(" fallback setkey() returned:%d\n", ret); |
9d12ba86 RR |
2904 | } |
2905 | ||
2906 | ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, | |
2907 | ctx->enckeylen, | |
2908 | false); | |
2909 | ||
2910 | atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]); | |
2911 | ||
2912 | flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen, | |
2913 | ctx->authkeylen); | |
2914 | ||
2915 | return ret; | |
2916 | ||
2917 | badkey: | |
2918 | ctx->enckeylen = 0; | |
2919 | ctx->authkeylen = 0; | |
2920 | ctx->digestsize = 0; | |
2921 | ||
9d12ba86 RR |
2922 | return -EINVAL; |
2923 | } | |
2924 | ||
2925 | /** | |
2926 | * aead_gcm_esp_setkey() - setkey() operation for ESP variant of GCM AES. | |
2927 | * @cipher: AEAD structure | |
2928 | * @key: Key followed by 4 bytes of salt | |
2929 | * @keylen: Length of key plus salt, in bytes | |
2930 | * | |
2931 | * Extracts salt from key and stores it to be prepended to IV on each request. | |
2932 | * Digest is always 16 bytes | |
2933 | * | |
2934 | * Return: Value from generic gcm setkey. | |
2935 | */ | |
2936 | static int aead_gcm_esp_setkey(struct crypto_aead *cipher, | |
2937 | const u8 *key, unsigned int keylen) | |
2938 | { | |
2939 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
2940 | ||
2941 | flow_log("%s\n", __func__); | |
10a2f0b3 HX |
2942 | |
2943 | if (keylen < GCM_ESP_SALT_SIZE) | |
2944 | return -EINVAL; | |
2945 | ||
9d12ba86 RR |
2946 | ctx->salt_len = GCM_ESP_SALT_SIZE; |
2947 | ctx->salt_offset = GCM_ESP_SALT_OFFSET; | |
2948 | memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE); | |
2949 | keylen -= GCM_ESP_SALT_SIZE; | |
2950 | ctx->digestsize = GCM_ESP_DIGESTSIZE; | |
2951 | ctx->is_esp = true; | |
2952 | flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE); | |
2953 | ||
2954 | return aead_gcm_ccm_setkey(cipher, key, keylen); | |
2955 | } | |
2956 | ||
2957 | /** | |
2958 | * rfc4543_gcm_esp_setkey() - setkey operation for RFC4543 variant of GCM/GMAC. | |
2959 | * cipher: AEAD structure | |
2960 | * key: Key followed by 4 bytes of salt | |
2961 | * keylen: Length of key plus salt, in bytes | |
2962 | * | |
2963 | * Extracts salt from key and stores it to be prepended to IV on each request. | |
2964 | * Digest is always 16 bytes | |
2965 | * | |
2966 | * Return: Value from generic gcm setkey. | |
2967 | */ | |
2968 | static int rfc4543_gcm_esp_setkey(struct crypto_aead *cipher, | |
2969 | const u8 *key, unsigned int keylen) | |
2970 | { | |
2971 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
2972 | ||
2973 | flow_log("%s\n", __func__); | |
10a2f0b3 HX |
2974 | |
2975 | if (keylen < GCM_ESP_SALT_SIZE) | |
2976 | return -EINVAL; | |
2977 | ||
9d12ba86 RR |
2978 | ctx->salt_len = GCM_ESP_SALT_SIZE; |
2979 | ctx->salt_offset = GCM_ESP_SALT_OFFSET; | |
2980 | memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE); | |
2981 | keylen -= GCM_ESP_SALT_SIZE; | |
2982 | ctx->digestsize = GCM_ESP_DIGESTSIZE; | |
2983 | ctx->is_esp = true; | |
2984 | ctx->is_rfc4543 = true; | |
2985 | flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE); | |
2986 | ||
2987 | return aead_gcm_ccm_setkey(cipher, key, keylen); | |
2988 | } | |
2989 | ||
2990 | /** | |
2991 | * aead_ccm_esp_setkey() - setkey() operation for ESP variant of CCM AES. | |
2992 | * @cipher: AEAD structure | |
2993 | * @key: Key followed by 4 bytes of salt | |
2994 | * @keylen: Length of key plus salt, in bytes | |
2995 | * | |
2996 | * Extracts salt from key and stores it to be prepended to IV on each request. | |
2997 | * Digest is always 16 bytes | |
2998 | * | |
2999 | * Return: Value from generic ccm setkey. | |
3000 | */ | |
3001 | static int aead_ccm_esp_setkey(struct crypto_aead *cipher, | |
3002 | const u8 *key, unsigned int keylen) | |
3003 | { | |
3004 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
3005 | ||
3006 | flow_log("%s\n", __func__); | |
10a2f0b3 HX |
3007 | |
3008 | if (keylen < CCM_ESP_SALT_SIZE) | |
3009 | return -EINVAL; | |
3010 | ||
9d12ba86 RR |
3011 | ctx->salt_len = CCM_ESP_SALT_SIZE; |
3012 | ctx->salt_offset = CCM_ESP_SALT_OFFSET; | |
3013 | memcpy(ctx->salt, key + keylen - CCM_ESP_SALT_SIZE, CCM_ESP_SALT_SIZE); | |
3014 | keylen -= CCM_ESP_SALT_SIZE; | |
3015 | ctx->is_esp = true; | |
3016 | flow_dump("salt: ", ctx->salt, CCM_ESP_SALT_SIZE); | |
3017 | ||
3018 | return aead_gcm_ccm_setkey(cipher, key, keylen); | |
3019 | } | |
3020 | ||
3021 | static int aead_setauthsize(struct crypto_aead *cipher, unsigned int authsize) | |
3022 | { | |
3023 | struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher); | |
3024 | int ret = 0; | |
3025 | ||
3026 | flow_log("%s() authkeylen:%u authsize:%u\n", | |
3027 | __func__, ctx->authkeylen, authsize); | |
3028 | ||
3029 | ctx->digestsize = authsize; | |
3030 | ||
3031 | /* setkey the fallback just in case we needto use it */ | |
3032 | if (ctx->fallback_cipher) { | |
3033 | flow_log(" running fallback setauth()\n"); | |
3034 | ||
3035 | ret = crypto_aead_setauthsize(ctx->fallback_cipher, authsize); | |
3036 | if (ret) | |
3037 | flow_log(" fallback setauth() returned:%d\n", ret); | |
3038 | } | |
3039 | ||
3040 | return ret; | |
3041 | } | |
3042 | ||
3043 | static int aead_encrypt(struct aead_request *req) | |
3044 | { | |
3045 | flow_log("%s() cryptlen:%u %08x\n", __func__, req->cryptlen, | |
3046 | req->cryptlen); | |
3047 | dump_sg(req->src, 0, req->cryptlen + req->assoclen); | |
3048 | flow_log(" assoc_len:%u\n", req->assoclen); | |
3049 | ||
3050 | return aead_enqueue(req, true); | |
3051 | } | |
3052 | ||
3053 | static int aead_decrypt(struct aead_request *req) | |
3054 | { | |
3055 | flow_log("%s() cryptlen:%u\n", __func__, req->cryptlen); | |
3056 | dump_sg(req->src, 0, req->cryptlen + req->assoclen); | |
3057 | flow_log(" assoc_len:%u\n", req->assoclen); | |
3058 | ||
3059 | return aead_enqueue(req, false); | |
3060 | } | |
3061 | ||
3062 | /* ==================== Supported Cipher Algorithms ==================== */ | |
3063 | ||
3064 | static struct iproc_alg_s driver_algs[] = { | |
3065 | { | |
3066 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3067 | .alg.aead = { | |
3068 | .base = { | |
3069 | .cra_name = "gcm(aes)", | |
3070 | .cra_driver_name = "gcm-aes-iproc", | |
3071 | .cra_blocksize = AES_BLOCK_SIZE, | |
3072 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3073 | }, | |
3074 | .setkey = aead_gcm_ccm_setkey, | |
3075 | .ivsize = GCM_AES_IV_SIZE, | |
3076 | .maxauthsize = AES_BLOCK_SIZE, | |
3077 | }, | |
3078 | .cipher_info = { | |
3079 | .alg = CIPHER_ALG_AES, | |
3080 | .mode = CIPHER_MODE_GCM, | |
3081 | }, | |
3082 | .auth_info = { | |
3083 | .alg = HASH_ALG_AES, | |
3084 | .mode = HASH_MODE_GCM, | |
3085 | }, | |
3086 | .auth_first = 0, | |
3087 | }, | |
3088 | { | |
3089 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3090 | .alg.aead = { | |
3091 | .base = { | |
3092 | .cra_name = "ccm(aes)", | |
3093 | .cra_driver_name = "ccm-aes-iproc", | |
3094 | .cra_blocksize = AES_BLOCK_SIZE, | |
3095 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3096 | }, | |
3097 | .setkey = aead_gcm_ccm_setkey, | |
3098 | .ivsize = CCM_AES_IV_SIZE, | |
3099 | .maxauthsize = AES_BLOCK_SIZE, | |
3100 | }, | |
3101 | .cipher_info = { | |
3102 | .alg = CIPHER_ALG_AES, | |
3103 | .mode = CIPHER_MODE_CCM, | |
3104 | }, | |
3105 | .auth_info = { | |
3106 | .alg = HASH_ALG_AES, | |
3107 | .mode = HASH_MODE_CCM, | |
3108 | }, | |
3109 | .auth_first = 0, | |
3110 | }, | |
3111 | { | |
3112 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3113 | .alg.aead = { | |
3114 | .base = { | |
3115 | .cra_name = "rfc4106(gcm(aes))", | |
3116 | .cra_driver_name = "gcm-aes-esp-iproc", | |
3117 | .cra_blocksize = AES_BLOCK_SIZE, | |
3118 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3119 | }, | |
3120 | .setkey = aead_gcm_esp_setkey, | |
a59851d2 | 3121 | .ivsize = GCM_RFC4106_IV_SIZE, |
9d12ba86 RR |
3122 | .maxauthsize = AES_BLOCK_SIZE, |
3123 | }, | |
3124 | .cipher_info = { | |
3125 | .alg = CIPHER_ALG_AES, | |
3126 | .mode = CIPHER_MODE_GCM, | |
3127 | }, | |
3128 | .auth_info = { | |
3129 | .alg = HASH_ALG_AES, | |
3130 | .mode = HASH_MODE_GCM, | |
3131 | }, | |
3132 | .auth_first = 0, | |
3133 | }, | |
3134 | { | |
3135 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3136 | .alg.aead = { | |
3137 | .base = { | |
3138 | .cra_name = "rfc4309(ccm(aes))", | |
3139 | .cra_driver_name = "ccm-aes-esp-iproc", | |
3140 | .cra_blocksize = AES_BLOCK_SIZE, | |
3141 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3142 | }, | |
3143 | .setkey = aead_ccm_esp_setkey, | |
3144 | .ivsize = CCM_AES_IV_SIZE, | |
3145 | .maxauthsize = AES_BLOCK_SIZE, | |
3146 | }, | |
3147 | .cipher_info = { | |
3148 | .alg = CIPHER_ALG_AES, | |
3149 | .mode = CIPHER_MODE_CCM, | |
3150 | }, | |
3151 | .auth_info = { | |
3152 | .alg = HASH_ALG_AES, | |
3153 | .mode = HASH_MODE_CCM, | |
3154 | }, | |
3155 | .auth_first = 0, | |
3156 | }, | |
3157 | { | |
3158 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3159 | .alg.aead = { | |
3160 | .base = { | |
3161 | .cra_name = "rfc4543(gcm(aes))", | |
3162 | .cra_driver_name = "gmac-aes-esp-iproc", | |
3163 | .cra_blocksize = AES_BLOCK_SIZE, | |
3164 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3165 | }, | |
3166 | .setkey = rfc4543_gcm_esp_setkey, | |
a59851d2 | 3167 | .ivsize = GCM_RFC4106_IV_SIZE, |
9d12ba86 RR |
3168 | .maxauthsize = AES_BLOCK_SIZE, |
3169 | }, | |
3170 | .cipher_info = { | |
3171 | .alg = CIPHER_ALG_AES, | |
3172 | .mode = CIPHER_MODE_GCM, | |
3173 | }, | |
3174 | .auth_info = { | |
3175 | .alg = HASH_ALG_AES, | |
3176 | .mode = HASH_MODE_GCM, | |
3177 | }, | |
3178 | .auth_first = 0, | |
3179 | }, | |
3180 | { | |
3181 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3182 | .alg.aead = { | |
3183 | .base = { | |
3184 | .cra_name = "authenc(hmac(md5),cbc(aes))", | |
3185 | .cra_driver_name = "authenc-hmac-md5-cbc-aes-iproc", | |
3186 | .cra_blocksize = AES_BLOCK_SIZE, | |
b8aa7dc5 MP |
3187 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3188 | CRYPTO_ALG_ASYNC | | |
3189 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3190 | }, |
3191 | .setkey = aead_authenc_setkey, | |
3192 | .ivsize = AES_BLOCK_SIZE, | |
3193 | .maxauthsize = MD5_DIGEST_SIZE, | |
3194 | }, | |
3195 | .cipher_info = { | |
3196 | .alg = CIPHER_ALG_AES, | |
3197 | .mode = CIPHER_MODE_CBC, | |
3198 | }, | |
3199 | .auth_info = { | |
3200 | .alg = HASH_ALG_MD5, | |
3201 | .mode = HASH_MODE_HMAC, | |
3202 | }, | |
3203 | .auth_first = 0, | |
3204 | }, | |
3205 | { | |
3206 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3207 | .alg.aead = { | |
3208 | .base = { | |
3209 | .cra_name = "authenc(hmac(sha1),cbc(aes))", | |
3210 | .cra_driver_name = "authenc-hmac-sha1-cbc-aes-iproc", | |
3211 | .cra_blocksize = AES_BLOCK_SIZE, | |
b8aa7dc5 MP |
3212 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3213 | CRYPTO_ALG_ASYNC | | |
3214 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3215 | }, |
3216 | .setkey = aead_authenc_setkey, | |
3217 | .ivsize = AES_BLOCK_SIZE, | |
3218 | .maxauthsize = SHA1_DIGEST_SIZE, | |
3219 | }, | |
3220 | .cipher_info = { | |
3221 | .alg = CIPHER_ALG_AES, | |
3222 | .mode = CIPHER_MODE_CBC, | |
3223 | }, | |
3224 | .auth_info = { | |
3225 | .alg = HASH_ALG_SHA1, | |
3226 | .mode = HASH_MODE_HMAC, | |
3227 | }, | |
3228 | .auth_first = 0, | |
3229 | }, | |
3230 | { | |
3231 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3232 | .alg.aead = { | |
3233 | .base = { | |
3234 | .cra_name = "authenc(hmac(sha256),cbc(aes))", | |
3235 | .cra_driver_name = "authenc-hmac-sha256-cbc-aes-iproc", | |
3236 | .cra_blocksize = AES_BLOCK_SIZE, | |
b8aa7dc5 MP |
3237 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3238 | CRYPTO_ALG_ASYNC | | |
3239 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3240 | }, |
3241 | .setkey = aead_authenc_setkey, | |
3242 | .ivsize = AES_BLOCK_SIZE, | |
3243 | .maxauthsize = SHA256_DIGEST_SIZE, | |
3244 | }, | |
3245 | .cipher_info = { | |
3246 | .alg = CIPHER_ALG_AES, | |
3247 | .mode = CIPHER_MODE_CBC, | |
3248 | }, | |
3249 | .auth_info = { | |
3250 | .alg = HASH_ALG_SHA256, | |
3251 | .mode = HASH_MODE_HMAC, | |
3252 | }, | |
3253 | .auth_first = 0, | |
3254 | }, | |
3255 | { | |
3256 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3257 | .alg.aead = { | |
3258 | .base = { | |
3259 | .cra_name = "authenc(hmac(md5),cbc(des))", | |
3260 | .cra_driver_name = "authenc-hmac-md5-cbc-des-iproc", | |
3261 | .cra_blocksize = DES_BLOCK_SIZE, | |
b8aa7dc5 MP |
3262 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3263 | CRYPTO_ALG_ASYNC | | |
3264 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3265 | }, |
3266 | .setkey = aead_authenc_setkey, | |
3267 | .ivsize = DES_BLOCK_SIZE, | |
3268 | .maxauthsize = MD5_DIGEST_SIZE, | |
3269 | }, | |
3270 | .cipher_info = { | |
3271 | .alg = CIPHER_ALG_DES, | |
3272 | .mode = CIPHER_MODE_CBC, | |
3273 | }, | |
3274 | .auth_info = { | |
3275 | .alg = HASH_ALG_MD5, | |
3276 | .mode = HASH_MODE_HMAC, | |
3277 | }, | |
3278 | .auth_first = 0, | |
3279 | }, | |
3280 | { | |
3281 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3282 | .alg.aead = { | |
3283 | .base = { | |
3284 | .cra_name = "authenc(hmac(sha1),cbc(des))", | |
3285 | .cra_driver_name = "authenc-hmac-sha1-cbc-des-iproc", | |
3286 | .cra_blocksize = DES_BLOCK_SIZE, | |
b8aa7dc5 MP |
3287 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3288 | CRYPTO_ALG_ASYNC | | |
3289 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3290 | }, |
3291 | .setkey = aead_authenc_setkey, | |
3292 | .ivsize = DES_BLOCK_SIZE, | |
3293 | .maxauthsize = SHA1_DIGEST_SIZE, | |
3294 | }, | |
3295 | .cipher_info = { | |
3296 | .alg = CIPHER_ALG_DES, | |
3297 | .mode = CIPHER_MODE_CBC, | |
3298 | }, | |
3299 | .auth_info = { | |
3300 | .alg = HASH_ALG_SHA1, | |
3301 | .mode = HASH_MODE_HMAC, | |
3302 | }, | |
3303 | .auth_first = 0, | |
3304 | }, | |
3305 | { | |
3306 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3307 | .alg.aead = { | |
3308 | .base = { | |
3309 | .cra_name = "authenc(hmac(sha224),cbc(des))", | |
3310 | .cra_driver_name = "authenc-hmac-sha224-cbc-des-iproc", | |
3311 | .cra_blocksize = DES_BLOCK_SIZE, | |
b8aa7dc5 MP |
3312 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3313 | CRYPTO_ALG_ASYNC | | |
3314 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3315 | }, |
3316 | .setkey = aead_authenc_setkey, | |
3317 | .ivsize = DES_BLOCK_SIZE, | |
3318 | .maxauthsize = SHA224_DIGEST_SIZE, | |
3319 | }, | |
3320 | .cipher_info = { | |
3321 | .alg = CIPHER_ALG_DES, | |
3322 | .mode = CIPHER_MODE_CBC, | |
3323 | }, | |
3324 | .auth_info = { | |
3325 | .alg = HASH_ALG_SHA224, | |
3326 | .mode = HASH_MODE_HMAC, | |
3327 | }, | |
3328 | .auth_first = 0, | |
3329 | }, | |
3330 | { | |
3331 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3332 | .alg.aead = { | |
3333 | .base = { | |
3334 | .cra_name = "authenc(hmac(sha256),cbc(des))", | |
3335 | .cra_driver_name = "authenc-hmac-sha256-cbc-des-iproc", | |
3336 | .cra_blocksize = DES_BLOCK_SIZE, | |
b8aa7dc5 MP |
3337 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3338 | CRYPTO_ALG_ASYNC | | |
3339 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3340 | }, |
3341 | .setkey = aead_authenc_setkey, | |
3342 | .ivsize = DES_BLOCK_SIZE, | |
3343 | .maxauthsize = SHA256_DIGEST_SIZE, | |
3344 | }, | |
3345 | .cipher_info = { | |
3346 | .alg = CIPHER_ALG_DES, | |
3347 | .mode = CIPHER_MODE_CBC, | |
3348 | }, | |
3349 | .auth_info = { | |
3350 | .alg = HASH_ALG_SHA256, | |
3351 | .mode = HASH_MODE_HMAC, | |
3352 | }, | |
3353 | .auth_first = 0, | |
3354 | }, | |
3355 | { | |
3356 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3357 | .alg.aead = { | |
3358 | .base = { | |
3359 | .cra_name = "authenc(hmac(sha384),cbc(des))", | |
3360 | .cra_driver_name = "authenc-hmac-sha384-cbc-des-iproc", | |
3361 | .cra_blocksize = DES_BLOCK_SIZE, | |
b8aa7dc5 MP |
3362 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3363 | CRYPTO_ALG_ASYNC | | |
3364 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3365 | }, |
3366 | .setkey = aead_authenc_setkey, | |
3367 | .ivsize = DES_BLOCK_SIZE, | |
3368 | .maxauthsize = SHA384_DIGEST_SIZE, | |
3369 | }, | |
3370 | .cipher_info = { | |
3371 | .alg = CIPHER_ALG_DES, | |
3372 | .mode = CIPHER_MODE_CBC, | |
3373 | }, | |
3374 | .auth_info = { | |
3375 | .alg = HASH_ALG_SHA384, | |
3376 | .mode = HASH_MODE_HMAC, | |
3377 | }, | |
3378 | .auth_first = 0, | |
3379 | }, | |
3380 | { | |
3381 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3382 | .alg.aead = { | |
3383 | .base = { | |
3384 | .cra_name = "authenc(hmac(sha512),cbc(des))", | |
3385 | .cra_driver_name = "authenc-hmac-sha512-cbc-des-iproc", | |
3386 | .cra_blocksize = DES_BLOCK_SIZE, | |
b8aa7dc5 MP |
3387 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3388 | CRYPTO_ALG_ASYNC | | |
3389 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3390 | }, |
3391 | .setkey = aead_authenc_setkey, | |
3392 | .ivsize = DES_BLOCK_SIZE, | |
3393 | .maxauthsize = SHA512_DIGEST_SIZE, | |
3394 | }, | |
3395 | .cipher_info = { | |
3396 | .alg = CIPHER_ALG_DES, | |
3397 | .mode = CIPHER_MODE_CBC, | |
3398 | }, | |
3399 | .auth_info = { | |
3400 | .alg = HASH_ALG_SHA512, | |
3401 | .mode = HASH_MODE_HMAC, | |
3402 | }, | |
3403 | .auth_first = 0, | |
3404 | }, | |
3405 | { | |
3406 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3407 | .alg.aead = { | |
3408 | .base = { | |
3409 | .cra_name = "authenc(hmac(md5),cbc(des3_ede))", | |
3410 | .cra_driver_name = "authenc-hmac-md5-cbc-des3-iproc", | |
3411 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
b8aa7dc5 MP |
3412 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3413 | CRYPTO_ALG_ASYNC | | |
3414 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3415 | }, |
3416 | .setkey = aead_authenc_setkey, | |
3417 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3418 | .maxauthsize = MD5_DIGEST_SIZE, | |
3419 | }, | |
3420 | .cipher_info = { | |
3421 | .alg = CIPHER_ALG_3DES, | |
3422 | .mode = CIPHER_MODE_CBC, | |
3423 | }, | |
3424 | .auth_info = { | |
3425 | .alg = HASH_ALG_MD5, | |
3426 | .mode = HASH_MODE_HMAC, | |
3427 | }, | |
3428 | .auth_first = 0, | |
3429 | }, | |
3430 | { | |
3431 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3432 | .alg.aead = { | |
3433 | .base = { | |
3434 | .cra_name = "authenc(hmac(sha1),cbc(des3_ede))", | |
3435 | .cra_driver_name = "authenc-hmac-sha1-cbc-des3-iproc", | |
3436 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
b8aa7dc5 MP |
3437 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3438 | CRYPTO_ALG_ASYNC | | |
3439 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3440 | }, |
3441 | .setkey = aead_authenc_setkey, | |
3442 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3443 | .maxauthsize = SHA1_DIGEST_SIZE, | |
3444 | }, | |
3445 | .cipher_info = { | |
3446 | .alg = CIPHER_ALG_3DES, | |
3447 | .mode = CIPHER_MODE_CBC, | |
3448 | }, | |
3449 | .auth_info = { | |
3450 | .alg = HASH_ALG_SHA1, | |
3451 | .mode = HASH_MODE_HMAC, | |
3452 | }, | |
3453 | .auth_first = 0, | |
3454 | }, | |
3455 | { | |
3456 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3457 | .alg.aead = { | |
3458 | .base = { | |
3459 | .cra_name = "authenc(hmac(sha224),cbc(des3_ede))", | |
3460 | .cra_driver_name = "authenc-hmac-sha224-cbc-des3-iproc", | |
3461 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
b8aa7dc5 MP |
3462 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3463 | CRYPTO_ALG_ASYNC | | |
3464 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3465 | }, |
3466 | .setkey = aead_authenc_setkey, | |
3467 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3468 | .maxauthsize = SHA224_DIGEST_SIZE, | |
3469 | }, | |
3470 | .cipher_info = { | |
3471 | .alg = CIPHER_ALG_3DES, | |
3472 | .mode = CIPHER_MODE_CBC, | |
3473 | }, | |
3474 | .auth_info = { | |
3475 | .alg = HASH_ALG_SHA224, | |
3476 | .mode = HASH_MODE_HMAC, | |
3477 | }, | |
3478 | .auth_first = 0, | |
3479 | }, | |
3480 | { | |
3481 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3482 | .alg.aead = { | |
3483 | .base = { | |
3484 | .cra_name = "authenc(hmac(sha256),cbc(des3_ede))", | |
3485 | .cra_driver_name = "authenc-hmac-sha256-cbc-des3-iproc", | |
3486 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
b8aa7dc5 MP |
3487 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3488 | CRYPTO_ALG_ASYNC | | |
3489 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3490 | }, |
3491 | .setkey = aead_authenc_setkey, | |
3492 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3493 | .maxauthsize = SHA256_DIGEST_SIZE, | |
3494 | }, | |
3495 | .cipher_info = { | |
3496 | .alg = CIPHER_ALG_3DES, | |
3497 | .mode = CIPHER_MODE_CBC, | |
3498 | }, | |
3499 | .auth_info = { | |
3500 | .alg = HASH_ALG_SHA256, | |
3501 | .mode = HASH_MODE_HMAC, | |
3502 | }, | |
3503 | .auth_first = 0, | |
3504 | }, | |
3505 | { | |
3506 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3507 | .alg.aead = { | |
3508 | .base = { | |
3509 | .cra_name = "authenc(hmac(sha384),cbc(des3_ede))", | |
3510 | .cra_driver_name = "authenc-hmac-sha384-cbc-des3-iproc", | |
3511 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
b8aa7dc5 MP |
3512 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3513 | CRYPTO_ALG_ASYNC | | |
3514 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3515 | }, |
3516 | .setkey = aead_authenc_setkey, | |
3517 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3518 | .maxauthsize = SHA384_DIGEST_SIZE, | |
3519 | }, | |
3520 | .cipher_info = { | |
3521 | .alg = CIPHER_ALG_3DES, | |
3522 | .mode = CIPHER_MODE_CBC, | |
3523 | }, | |
3524 | .auth_info = { | |
3525 | .alg = HASH_ALG_SHA384, | |
3526 | .mode = HASH_MODE_HMAC, | |
3527 | }, | |
3528 | .auth_first = 0, | |
3529 | }, | |
3530 | { | |
3531 | .type = CRYPTO_ALG_TYPE_AEAD, | |
3532 | .alg.aead = { | |
3533 | .base = { | |
3534 | .cra_name = "authenc(hmac(sha512),cbc(des3_ede))", | |
3535 | .cra_driver_name = "authenc-hmac-sha512-cbc-des3-iproc", | |
3536 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
b8aa7dc5 MP |
3537 | .cra_flags = CRYPTO_ALG_NEED_FALLBACK | |
3538 | CRYPTO_ALG_ASYNC | | |
3539 | CRYPTO_ALG_ALLOCATES_MEMORY | |
9d12ba86 RR |
3540 | }, |
3541 | .setkey = aead_authenc_setkey, | |
3542 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
3543 | .maxauthsize = SHA512_DIGEST_SIZE, | |
3544 | }, | |
3545 | .cipher_info = { | |
3546 | .alg = CIPHER_ALG_3DES, | |
3547 | .mode = CIPHER_MODE_CBC, | |
3548 | }, | |
3549 | .auth_info = { | |
3550 | .alg = HASH_ALG_SHA512, | |
3551 | .mode = HASH_MODE_HMAC, | |
3552 | }, | |
3553 | .auth_first = 0, | |
3554 | }, | |
3555 | ||
a9c01cd6 | 3556 | /* SKCIPHER algorithms. */ |
9d12ba86 | 3557 | { |
a9c01cd6 AB |
3558 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3559 | .alg.skcipher = { | |
3560 | .base.cra_name = "ofb(des)", | |
3561 | .base.cra_driver_name = "ofb-des-iproc", | |
3562 | .base.cra_blocksize = DES_BLOCK_SIZE, | |
3563 | .min_keysize = DES_KEY_SIZE, | |
3564 | .max_keysize = DES_KEY_SIZE, | |
3565 | .ivsize = DES_BLOCK_SIZE, | |
9d12ba86 RR |
3566 | }, |
3567 | .cipher_info = { | |
3568 | .alg = CIPHER_ALG_DES, | |
3569 | .mode = CIPHER_MODE_OFB, | |
3570 | }, | |
3571 | .auth_info = { | |
3572 | .alg = HASH_ALG_NONE, | |
3573 | .mode = HASH_MODE_NONE, | |
3574 | }, | |
3575 | }, | |
3576 | { | |
a9c01cd6 AB |
3577 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3578 | .alg.skcipher = { | |
3579 | .base.cra_name = "cbc(des)", | |
3580 | .base.cra_driver_name = "cbc-des-iproc", | |
3581 | .base.cra_blocksize = DES_BLOCK_SIZE, | |
3582 | .min_keysize = DES_KEY_SIZE, | |
3583 | .max_keysize = DES_KEY_SIZE, | |
3584 | .ivsize = DES_BLOCK_SIZE, | |
9d12ba86 RR |
3585 | }, |
3586 | .cipher_info = { | |
3587 | .alg = CIPHER_ALG_DES, | |
3588 | .mode = CIPHER_MODE_CBC, | |
3589 | }, | |
3590 | .auth_info = { | |
3591 | .alg = HASH_ALG_NONE, | |
3592 | .mode = HASH_MODE_NONE, | |
3593 | }, | |
3594 | }, | |
3595 | { | |
a9c01cd6 AB |
3596 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3597 | .alg.skcipher = { | |
3598 | .base.cra_name = "ecb(des)", | |
3599 | .base.cra_driver_name = "ecb-des-iproc", | |
3600 | .base.cra_blocksize = DES_BLOCK_SIZE, | |
3601 | .min_keysize = DES_KEY_SIZE, | |
3602 | .max_keysize = DES_KEY_SIZE, | |
3603 | .ivsize = 0, | |
9d12ba86 RR |
3604 | }, |
3605 | .cipher_info = { | |
3606 | .alg = CIPHER_ALG_DES, | |
3607 | .mode = CIPHER_MODE_ECB, | |
3608 | }, | |
3609 | .auth_info = { | |
3610 | .alg = HASH_ALG_NONE, | |
3611 | .mode = HASH_MODE_NONE, | |
3612 | }, | |
3613 | }, | |
3614 | { | |
a9c01cd6 AB |
3615 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3616 | .alg.skcipher = { | |
3617 | .base.cra_name = "ofb(des3_ede)", | |
3618 | .base.cra_driver_name = "ofb-des3-iproc", | |
3619 | .base.cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3620 | .min_keysize = DES3_EDE_KEY_SIZE, | |
3621 | .max_keysize = DES3_EDE_KEY_SIZE, | |
3622 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
9d12ba86 RR |
3623 | }, |
3624 | .cipher_info = { | |
3625 | .alg = CIPHER_ALG_3DES, | |
3626 | .mode = CIPHER_MODE_OFB, | |
3627 | }, | |
3628 | .auth_info = { | |
3629 | .alg = HASH_ALG_NONE, | |
3630 | .mode = HASH_MODE_NONE, | |
3631 | }, | |
3632 | }, | |
3633 | { | |
a9c01cd6 AB |
3634 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3635 | .alg.skcipher = { | |
3636 | .base.cra_name = "cbc(des3_ede)", | |
3637 | .base.cra_driver_name = "cbc-des3-iproc", | |
3638 | .base.cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3639 | .min_keysize = DES3_EDE_KEY_SIZE, | |
3640 | .max_keysize = DES3_EDE_KEY_SIZE, | |
3641 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
9d12ba86 RR |
3642 | }, |
3643 | .cipher_info = { | |
3644 | .alg = CIPHER_ALG_3DES, | |
3645 | .mode = CIPHER_MODE_CBC, | |
3646 | }, | |
3647 | .auth_info = { | |
3648 | .alg = HASH_ALG_NONE, | |
3649 | .mode = HASH_MODE_NONE, | |
3650 | }, | |
3651 | }, | |
3652 | { | |
a9c01cd6 AB |
3653 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3654 | .alg.skcipher = { | |
3655 | .base.cra_name = "ecb(des3_ede)", | |
3656 | .base.cra_driver_name = "ecb-des3-iproc", | |
3657 | .base.cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
3658 | .min_keysize = DES3_EDE_KEY_SIZE, | |
3659 | .max_keysize = DES3_EDE_KEY_SIZE, | |
3660 | .ivsize = 0, | |
9d12ba86 RR |
3661 | }, |
3662 | .cipher_info = { | |
3663 | .alg = CIPHER_ALG_3DES, | |
3664 | .mode = CIPHER_MODE_ECB, | |
3665 | }, | |
3666 | .auth_info = { | |
3667 | .alg = HASH_ALG_NONE, | |
3668 | .mode = HASH_MODE_NONE, | |
3669 | }, | |
3670 | }, | |
3671 | { | |
a9c01cd6 AB |
3672 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3673 | .alg.skcipher = { | |
3674 | .base.cra_name = "ofb(aes)", | |
3675 | .base.cra_driver_name = "ofb-aes-iproc", | |
3676 | .base.cra_blocksize = AES_BLOCK_SIZE, | |
3677 | .min_keysize = AES_MIN_KEY_SIZE, | |
3678 | .max_keysize = AES_MAX_KEY_SIZE, | |
3679 | .ivsize = AES_BLOCK_SIZE, | |
9d12ba86 RR |
3680 | }, |
3681 | .cipher_info = { | |
3682 | .alg = CIPHER_ALG_AES, | |
3683 | .mode = CIPHER_MODE_OFB, | |
3684 | }, | |
3685 | .auth_info = { | |
3686 | .alg = HASH_ALG_NONE, | |
3687 | .mode = HASH_MODE_NONE, | |
3688 | }, | |
3689 | }, | |
3690 | { | |
a9c01cd6 AB |
3691 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3692 | .alg.skcipher = { | |
3693 | .base.cra_name = "cbc(aes)", | |
3694 | .base.cra_driver_name = "cbc-aes-iproc", | |
3695 | .base.cra_blocksize = AES_BLOCK_SIZE, | |
3696 | .min_keysize = AES_MIN_KEY_SIZE, | |
3697 | .max_keysize = AES_MAX_KEY_SIZE, | |
3698 | .ivsize = AES_BLOCK_SIZE, | |
9d12ba86 RR |
3699 | }, |
3700 | .cipher_info = { | |
3701 | .alg = CIPHER_ALG_AES, | |
3702 | .mode = CIPHER_MODE_CBC, | |
3703 | }, | |
3704 | .auth_info = { | |
3705 | .alg = HASH_ALG_NONE, | |
3706 | .mode = HASH_MODE_NONE, | |
3707 | }, | |
3708 | }, | |
3709 | { | |
a9c01cd6 AB |
3710 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3711 | .alg.skcipher = { | |
3712 | .base.cra_name = "ecb(aes)", | |
3713 | .base.cra_driver_name = "ecb-aes-iproc", | |
3714 | .base.cra_blocksize = AES_BLOCK_SIZE, | |
3715 | .min_keysize = AES_MIN_KEY_SIZE, | |
3716 | .max_keysize = AES_MAX_KEY_SIZE, | |
3717 | .ivsize = 0, | |
9d12ba86 RR |
3718 | }, |
3719 | .cipher_info = { | |
3720 | .alg = CIPHER_ALG_AES, | |
3721 | .mode = CIPHER_MODE_ECB, | |
3722 | }, | |
3723 | .auth_info = { | |
3724 | .alg = HASH_ALG_NONE, | |
3725 | .mode = HASH_MODE_NONE, | |
3726 | }, | |
3727 | }, | |
3728 | { | |
a9c01cd6 AB |
3729 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3730 | .alg.skcipher = { | |
3731 | .base.cra_name = "ctr(aes)", | |
3732 | .base.cra_driver_name = "ctr-aes-iproc", | |
3733 | .base.cra_blocksize = AES_BLOCK_SIZE, | |
3734 | .min_keysize = AES_MIN_KEY_SIZE, | |
3735 | .max_keysize = AES_MAX_KEY_SIZE, | |
3736 | .ivsize = AES_BLOCK_SIZE, | |
9d12ba86 RR |
3737 | }, |
3738 | .cipher_info = { | |
3739 | .alg = CIPHER_ALG_AES, | |
3740 | .mode = CIPHER_MODE_CTR, | |
3741 | }, | |
3742 | .auth_info = { | |
3743 | .alg = HASH_ALG_NONE, | |
3744 | .mode = HASH_MODE_NONE, | |
3745 | }, | |
3746 | }, | |
3747 | { | |
a9c01cd6 AB |
3748 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
3749 | .alg.skcipher = { | |
3750 | .base.cra_name = "xts(aes)", | |
3751 | .base.cra_driver_name = "xts-aes-iproc", | |
3752 | .base.cra_blocksize = AES_BLOCK_SIZE, | |
3753 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
3754 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
3755 | .ivsize = AES_BLOCK_SIZE, | |
9d12ba86 RR |
3756 | }, |
3757 | .cipher_info = { | |
3758 | .alg = CIPHER_ALG_AES, | |
3759 | .mode = CIPHER_MODE_XTS, | |
3760 | }, | |
3761 | .auth_info = { | |
3762 | .alg = HASH_ALG_NONE, | |
3763 | .mode = HASH_MODE_NONE, | |
3764 | }, | |
3765 | }, | |
3766 | ||
3767 | /* AHASH algorithms. */ | |
3768 | { | |
3769 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3770 | .alg.hash = { | |
3771 | .halg.digestsize = MD5_DIGEST_SIZE, | |
3772 | .halg.base = { | |
3773 | .cra_name = "md5", | |
3774 | .cra_driver_name = "md5-iproc", | |
3775 | .cra_blocksize = MD5_BLOCK_WORDS * 4, | |
b8aa7dc5 MP |
3776 | .cra_flags = CRYPTO_ALG_ASYNC | |
3777 | CRYPTO_ALG_ALLOCATES_MEMORY, | |
9d12ba86 RR |
3778 | } |
3779 | }, | |
3780 | .cipher_info = { | |
3781 | .alg = CIPHER_ALG_NONE, | |
3782 | .mode = CIPHER_MODE_NONE, | |
3783 | }, | |
3784 | .auth_info = { | |
3785 | .alg = HASH_ALG_MD5, | |
3786 | .mode = HASH_MODE_HASH, | |
3787 | }, | |
3788 | }, | |
3789 | { | |
3790 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3791 | .alg.hash = { | |
3792 | .halg.digestsize = MD5_DIGEST_SIZE, | |
3793 | .halg.base = { | |
3794 | .cra_name = "hmac(md5)", | |
3795 | .cra_driver_name = "hmac-md5-iproc", | |
3796 | .cra_blocksize = MD5_BLOCK_WORDS * 4, | |
3797 | } | |
3798 | }, | |
3799 | .cipher_info = { | |
3800 | .alg = CIPHER_ALG_NONE, | |
3801 | .mode = CIPHER_MODE_NONE, | |
3802 | }, | |
3803 | .auth_info = { | |
3804 | .alg = HASH_ALG_MD5, | |
3805 | .mode = HASH_MODE_HMAC, | |
3806 | }, | |
3807 | }, | |
3808 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3809 | .alg.hash = { | |
3810 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
3811 | .halg.base = { | |
3812 | .cra_name = "sha1", | |
3813 | .cra_driver_name = "sha1-iproc", | |
3814 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
3815 | } | |
3816 | }, | |
3817 | .cipher_info = { | |
3818 | .alg = CIPHER_ALG_NONE, | |
3819 | .mode = CIPHER_MODE_NONE, | |
3820 | }, | |
3821 | .auth_info = { | |
3822 | .alg = HASH_ALG_SHA1, | |
3823 | .mode = HASH_MODE_HASH, | |
3824 | }, | |
3825 | }, | |
3826 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3827 | .alg.hash = { | |
3828 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
3829 | .halg.base = { | |
3830 | .cra_name = "hmac(sha1)", | |
3831 | .cra_driver_name = "hmac-sha1-iproc", | |
3832 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
3833 | } | |
3834 | }, | |
3835 | .cipher_info = { | |
3836 | .alg = CIPHER_ALG_NONE, | |
3837 | .mode = CIPHER_MODE_NONE, | |
3838 | }, | |
3839 | .auth_info = { | |
3840 | .alg = HASH_ALG_SHA1, | |
3841 | .mode = HASH_MODE_HMAC, | |
3842 | }, | |
3843 | }, | |
3844 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3845 | .alg.hash = { | |
3846 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
3847 | .halg.base = { | |
3848 | .cra_name = "sha224", | |
3849 | .cra_driver_name = "sha224-iproc", | |
3850 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
3851 | } | |
3852 | }, | |
3853 | .cipher_info = { | |
3854 | .alg = CIPHER_ALG_NONE, | |
3855 | .mode = CIPHER_MODE_NONE, | |
3856 | }, | |
3857 | .auth_info = { | |
3858 | .alg = HASH_ALG_SHA224, | |
3859 | .mode = HASH_MODE_HASH, | |
3860 | }, | |
3861 | }, | |
3862 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3863 | .alg.hash = { | |
3864 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
3865 | .halg.base = { | |
3866 | .cra_name = "hmac(sha224)", | |
3867 | .cra_driver_name = "hmac-sha224-iproc", | |
3868 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
3869 | } | |
3870 | }, | |
3871 | .cipher_info = { | |
3872 | .alg = CIPHER_ALG_NONE, | |
3873 | .mode = CIPHER_MODE_NONE, | |
3874 | }, | |
3875 | .auth_info = { | |
3876 | .alg = HASH_ALG_SHA224, | |
3877 | .mode = HASH_MODE_HMAC, | |
3878 | }, | |
3879 | }, | |
3880 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3881 | .alg.hash = { | |
3882 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
3883 | .halg.base = { | |
3884 | .cra_name = "sha256", | |
3885 | .cra_driver_name = "sha256-iproc", | |
3886 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
3887 | } | |
3888 | }, | |
3889 | .cipher_info = { | |
3890 | .alg = CIPHER_ALG_NONE, | |
3891 | .mode = CIPHER_MODE_NONE, | |
3892 | }, | |
3893 | .auth_info = { | |
3894 | .alg = HASH_ALG_SHA256, | |
3895 | .mode = HASH_MODE_HASH, | |
3896 | }, | |
3897 | }, | |
3898 | {.type = CRYPTO_ALG_TYPE_AHASH, | |
3899 | .alg.hash = { | |
3900 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
3901 | .halg.base = { | |
3902 | .cra_name = "hmac(sha256)", | |
3903 | .cra_driver_name = "hmac-sha256-iproc", | |
3904 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
3905 | } | |
3906 | }, | |
3907 | .cipher_info = { | |
3908 | .alg = CIPHER_ALG_NONE, | |
3909 | .mode = CIPHER_MODE_NONE, | |
3910 | }, | |
3911 | .auth_info = { | |
3912 | .alg = HASH_ALG_SHA256, | |
3913 | .mode = HASH_MODE_HMAC, | |
3914 | }, | |
3915 | }, | |
3916 | { | |
3917 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3918 | .alg.hash = { | |
3919 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
3920 | .halg.base = { | |
3921 | .cra_name = "sha384", | |
3922 | .cra_driver_name = "sha384-iproc", | |
3923 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
3924 | } | |
3925 | }, | |
3926 | .cipher_info = { | |
3927 | .alg = CIPHER_ALG_NONE, | |
3928 | .mode = CIPHER_MODE_NONE, | |
3929 | }, | |
3930 | .auth_info = { | |
3931 | .alg = HASH_ALG_SHA384, | |
3932 | .mode = HASH_MODE_HASH, | |
3933 | }, | |
3934 | }, | |
3935 | { | |
3936 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3937 | .alg.hash = { | |
3938 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
3939 | .halg.base = { | |
3940 | .cra_name = "hmac(sha384)", | |
3941 | .cra_driver_name = "hmac-sha384-iproc", | |
3942 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
3943 | } | |
3944 | }, | |
3945 | .cipher_info = { | |
3946 | .alg = CIPHER_ALG_NONE, | |
3947 | .mode = CIPHER_MODE_NONE, | |
3948 | }, | |
3949 | .auth_info = { | |
3950 | .alg = HASH_ALG_SHA384, | |
3951 | .mode = HASH_MODE_HMAC, | |
3952 | }, | |
3953 | }, | |
3954 | { | |
3955 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3956 | .alg.hash = { | |
3957 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
3958 | .halg.base = { | |
3959 | .cra_name = "sha512", | |
3960 | .cra_driver_name = "sha512-iproc", | |
3961 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
3962 | } | |
3963 | }, | |
3964 | .cipher_info = { | |
3965 | .alg = CIPHER_ALG_NONE, | |
3966 | .mode = CIPHER_MODE_NONE, | |
3967 | }, | |
3968 | .auth_info = { | |
3969 | .alg = HASH_ALG_SHA512, | |
3970 | .mode = HASH_MODE_HASH, | |
3971 | }, | |
3972 | }, | |
3973 | { | |
3974 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3975 | .alg.hash = { | |
3976 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
3977 | .halg.base = { | |
3978 | .cra_name = "hmac(sha512)", | |
3979 | .cra_driver_name = "hmac-sha512-iproc", | |
3980 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
3981 | } | |
3982 | }, | |
3983 | .cipher_info = { | |
3984 | .alg = CIPHER_ALG_NONE, | |
3985 | .mode = CIPHER_MODE_NONE, | |
3986 | }, | |
3987 | .auth_info = { | |
3988 | .alg = HASH_ALG_SHA512, | |
3989 | .mode = HASH_MODE_HMAC, | |
3990 | }, | |
3991 | }, | |
3992 | { | |
3993 | .type = CRYPTO_ALG_TYPE_AHASH, | |
3994 | .alg.hash = { | |
3995 | .halg.digestsize = SHA3_224_DIGEST_SIZE, | |
3996 | .halg.base = { | |
3997 | .cra_name = "sha3-224", | |
3998 | .cra_driver_name = "sha3-224-iproc", | |
3999 | .cra_blocksize = SHA3_224_BLOCK_SIZE, | |
4000 | } | |
4001 | }, | |
4002 | .cipher_info = { | |
4003 | .alg = CIPHER_ALG_NONE, | |
4004 | .mode = CIPHER_MODE_NONE, | |
4005 | }, | |
4006 | .auth_info = { | |
4007 | .alg = HASH_ALG_SHA3_224, | |
4008 | .mode = HASH_MODE_HASH, | |
4009 | }, | |
4010 | }, | |
4011 | { | |
4012 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4013 | .alg.hash = { | |
4014 | .halg.digestsize = SHA3_224_DIGEST_SIZE, | |
4015 | .halg.base = { | |
4016 | .cra_name = "hmac(sha3-224)", | |
4017 | .cra_driver_name = "hmac-sha3-224-iproc", | |
4018 | .cra_blocksize = SHA3_224_BLOCK_SIZE, | |
4019 | } | |
4020 | }, | |
4021 | .cipher_info = { | |
4022 | .alg = CIPHER_ALG_NONE, | |
4023 | .mode = CIPHER_MODE_NONE, | |
4024 | }, | |
4025 | .auth_info = { | |
4026 | .alg = HASH_ALG_SHA3_224, | |
4027 | .mode = HASH_MODE_HMAC | |
4028 | }, | |
4029 | }, | |
4030 | { | |
4031 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4032 | .alg.hash = { | |
4033 | .halg.digestsize = SHA3_256_DIGEST_SIZE, | |
4034 | .halg.base = { | |
4035 | .cra_name = "sha3-256", | |
4036 | .cra_driver_name = "sha3-256-iproc", | |
4037 | .cra_blocksize = SHA3_256_BLOCK_SIZE, | |
4038 | } | |
4039 | }, | |
4040 | .cipher_info = { | |
4041 | .alg = CIPHER_ALG_NONE, | |
4042 | .mode = CIPHER_MODE_NONE, | |
4043 | }, | |
4044 | .auth_info = { | |
4045 | .alg = HASH_ALG_SHA3_256, | |
4046 | .mode = HASH_MODE_HASH, | |
4047 | }, | |
4048 | }, | |
4049 | { | |
4050 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4051 | .alg.hash = { | |
4052 | .halg.digestsize = SHA3_256_DIGEST_SIZE, | |
4053 | .halg.base = { | |
4054 | .cra_name = "hmac(sha3-256)", | |
4055 | .cra_driver_name = "hmac-sha3-256-iproc", | |
4056 | .cra_blocksize = SHA3_256_BLOCK_SIZE, | |
4057 | } | |
4058 | }, | |
4059 | .cipher_info = { | |
4060 | .alg = CIPHER_ALG_NONE, | |
4061 | .mode = CIPHER_MODE_NONE, | |
4062 | }, | |
4063 | .auth_info = { | |
4064 | .alg = HASH_ALG_SHA3_256, | |
4065 | .mode = HASH_MODE_HMAC, | |
4066 | }, | |
4067 | }, | |
4068 | { | |
4069 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4070 | .alg.hash = { | |
4071 | .halg.digestsize = SHA3_384_DIGEST_SIZE, | |
4072 | .halg.base = { | |
4073 | .cra_name = "sha3-384", | |
4074 | .cra_driver_name = "sha3-384-iproc", | |
4075 | .cra_blocksize = SHA3_224_BLOCK_SIZE, | |
4076 | } | |
4077 | }, | |
4078 | .cipher_info = { | |
4079 | .alg = CIPHER_ALG_NONE, | |
4080 | .mode = CIPHER_MODE_NONE, | |
4081 | }, | |
4082 | .auth_info = { | |
4083 | .alg = HASH_ALG_SHA3_384, | |
4084 | .mode = HASH_MODE_HASH, | |
4085 | }, | |
4086 | }, | |
4087 | { | |
4088 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4089 | .alg.hash = { | |
4090 | .halg.digestsize = SHA3_384_DIGEST_SIZE, | |
4091 | .halg.base = { | |
4092 | .cra_name = "hmac(sha3-384)", | |
4093 | .cra_driver_name = "hmac-sha3-384-iproc", | |
4094 | .cra_blocksize = SHA3_384_BLOCK_SIZE, | |
4095 | } | |
4096 | }, | |
4097 | .cipher_info = { | |
4098 | .alg = CIPHER_ALG_NONE, | |
4099 | .mode = CIPHER_MODE_NONE, | |
4100 | }, | |
4101 | .auth_info = { | |
4102 | .alg = HASH_ALG_SHA3_384, | |
4103 | .mode = HASH_MODE_HMAC, | |
4104 | }, | |
4105 | }, | |
4106 | { | |
4107 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4108 | .alg.hash = { | |
4109 | .halg.digestsize = SHA3_512_DIGEST_SIZE, | |
4110 | .halg.base = { | |
4111 | .cra_name = "sha3-512", | |
4112 | .cra_driver_name = "sha3-512-iproc", | |
4113 | .cra_blocksize = SHA3_512_BLOCK_SIZE, | |
4114 | } | |
4115 | }, | |
4116 | .cipher_info = { | |
4117 | .alg = CIPHER_ALG_NONE, | |
4118 | .mode = CIPHER_MODE_NONE, | |
4119 | }, | |
4120 | .auth_info = { | |
4121 | .alg = HASH_ALG_SHA3_512, | |
4122 | .mode = HASH_MODE_HASH, | |
4123 | }, | |
4124 | }, | |
4125 | { | |
4126 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4127 | .alg.hash = { | |
4128 | .halg.digestsize = SHA3_512_DIGEST_SIZE, | |
4129 | .halg.base = { | |
4130 | .cra_name = "hmac(sha3-512)", | |
4131 | .cra_driver_name = "hmac-sha3-512-iproc", | |
4132 | .cra_blocksize = SHA3_512_BLOCK_SIZE, | |
4133 | } | |
4134 | }, | |
4135 | .cipher_info = { | |
4136 | .alg = CIPHER_ALG_NONE, | |
4137 | .mode = CIPHER_MODE_NONE, | |
4138 | }, | |
4139 | .auth_info = { | |
4140 | .alg = HASH_ALG_SHA3_512, | |
4141 | .mode = HASH_MODE_HMAC, | |
4142 | }, | |
4143 | }, | |
4144 | { | |
4145 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4146 | .alg.hash = { | |
4147 | .halg.digestsize = AES_BLOCK_SIZE, | |
4148 | .halg.base = { | |
4149 | .cra_name = "xcbc(aes)", | |
4150 | .cra_driver_name = "xcbc-aes-iproc", | |
4151 | .cra_blocksize = AES_BLOCK_SIZE, | |
4152 | } | |
4153 | }, | |
4154 | .cipher_info = { | |
4155 | .alg = CIPHER_ALG_NONE, | |
4156 | .mode = CIPHER_MODE_NONE, | |
4157 | }, | |
4158 | .auth_info = { | |
4159 | .alg = HASH_ALG_AES, | |
4160 | .mode = HASH_MODE_XCBC, | |
4161 | }, | |
4162 | }, | |
4163 | { | |
4164 | .type = CRYPTO_ALG_TYPE_AHASH, | |
4165 | .alg.hash = { | |
4166 | .halg.digestsize = AES_BLOCK_SIZE, | |
4167 | .halg.base = { | |
4168 | .cra_name = "cmac(aes)", | |
4169 | .cra_driver_name = "cmac-aes-iproc", | |
4170 | .cra_blocksize = AES_BLOCK_SIZE, | |
4171 | } | |
4172 | }, | |
4173 | .cipher_info = { | |
4174 | .alg = CIPHER_ALG_NONE, | |
4175 | .mode = CIPHER_MODE_NONE, | |
4176 | }, | |
4177 | .auth_info = { | |
4178 | .alg = HASH_ALG_AES, | |
4179 | .mode = HASH_MODE_CMAC, | |
4180 | }, | |
4181 | }, | |
4182 | }; | |
4183 | ||
4184 | static int generic_cra_init(struct crypto_tfm *tfm, | |
4185 | struct iproc_alg_s *cipher_alg) | |
4186 | { | |
4187 | struct spu_hw *spu = &iproc_priv.spu; | |
4188 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
4189 | unsigned int blocksize = crypto_tfm_alg_blocksize(tfm); | |
4190 | ||
4191 | flow_log("%s()\n", __func__); | |
4192 | ||
4193 | ctx->alg = cipher_alg; | |
4194 | ctx->cipher = cipher_alg->cipher_info; | |
4195 | ctx->auth = cipher_alg->auth_info; | |
4196 | ctx->auth_first = cipher_alg->auth_first; | |
4197 | ctx->max_payload = spu->spu_ctx_max_payload(ctx->cipher.alg, | |
4198 | ctx->cipher.mode, | |
4199 | blocksize); | |
4200 | ctx->fallback_cipher = NULL; | |
4201 | ||
4202 | ctx->enckeylen = 0; | |
4203 | ctx->authkeylen = 0; | |
4204 | ||
4205 | atomic_inc(&iproc_priv.stream_count); | |
4206 | atomic_inc(&iproc_priv.session_count); | |
4207 | ||
4208 | return 0; | |
4209 | } | |
4210 | ||
a9c01cd6 | 4211 | static int skcipher_init_tfm(struct crypto_skcipher *skcipher) |
9d12ba86 | 4212 | { |
a9c01cd6 AB |
4213 | struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher); |
4214 | struct skcipher_alg *alg = crypto_skcipher_alg(skcipher); | |
9d12ba86 RR |
4215 | struct iproc_alg_s *cipher_alg; |
4216 | ||
4217 | flow_log("%s()\n", __func__); | |
4218 | ||
a9c01cd6 | 4219 | crypto_skcipher_set_reqsize(skcipher, sizeof(struct iproc_reqctx_s)); |
9d12ba86 | 4220 | |
a9c01cd6 | 4221 | cipher_alg = container_of(alg, struct iproc_alg_s, alg.skcipher); |
9d12ba86 RR |
4222 | return generic_cra_init(tfm, cipher_alg); |
4223 | } | |
4224 | ||
4225 | static int ahash_cra_init(struct crypto_tfm *tfm) | |
4226 | { | |
4227 | int err; | |
4228 | struct crypto_alg *alg = tfm->__crt_alg; | |
4229 | struct iproc_alg_s *cipher_alg; | |
4230 | ||
4231 | cipher_alg = container_of(__crypto_ahash_alg(alg), struct iproc_alg_s, | |
4232 | alg.hash); | |
4233 | ||
4234 | err = generic_cra_init(tfm, cipher_alg); | |
4235 | flow_log("%s()\n", __func__); | |
4236 | ||
4237 | /* | |
4238 | * export state size has to be < 512 bytes. So don't include msg bufs | |
4239 | * in state size. | |
4240 | */ | |
4241 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), | |
4242 | sizeof(struct iproc_reqctx_s)); | |
4243 | ||
4244 | return err; | |
4245 | } | |
4246 | ||
4247 | static int aead_cra_init(struct crypto_aead *aead) | |
4248 | { | |
4249 | struct crypto_tfm *tfm = crypto_aead_tfm(aead); | |
4250 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
4251 | struct crypto_alg *alg = tfm->__crt_alg; | |
4252 | struct aead_alg *aalg = container_of(alg, struct aead_alg, base); | |
4253 | struct iproc_alg_s *cipher_alg = container_of(aalg, struct iproc_alg_s, | |
4254 | alg.aead); | |
4255 | ||
4256 | int err = generic_cra_init(tfm, cipher_alg); | |
4257 | ||
4258 | flow_log("%s()\n", __func__); | |
4259 | ||
4260 | crypto_aead_set_reqsize(aead, sizeof(struct iproc_reqctx_s)); | |
4261 | ctx->is_esp = false; | |
4262 | ctx->salt_len = 0; | |
4263 | ctx->salt_offset = 0; | |
4264 | ||
4265 | /* random first IV */ | |
4266 | get_random_bytes(ctx->iv, MAX_IV_SIZE); | |
4267 | flow_dump(" iv: ", ctx->iv, MAX_IV_SIZE); | |
4268 | ||
4269 | if (!err) { | |
4270 | if (alg->cra_flags & CRYPTO_ALG_NEED_FALLBACK) { | |
4271 | flow_log("%s() creating fallback cipher\n", __func__); | |
4272 | ||
4273 | ctx->fallback_cipher = | |
4274 | crypto_alloc_aead(alg->cra_name, 0, | |
4275 | CRYPTO_ALG_ASYNC | | |
4276 | CRYPTO_ALG_NEED_FALLBACK); | |
4277 | if (IS_ERR(ctx->fallback_cipher)) { | |
4278 | pr_err("%s() Error: failed to allocate fallback for %s\n", | |
4279 | __func__, alg->cra_name); | |
4280 | return PTR_ERR(ctx->fallback_cipher); | |
4281 | } | |
4282 | } | |
4283 | } | |
4284 | ||
4285 | return err; | |
4286 | } | |
4287 | ||
4288 | static void generic_cra_exit(struct crypto_tfm *tfm) | |
4289 | { | |
4290 | atomic_dec(&iproc_priv.session_count); | |
4291 | } | |
4292 | ||
a9c01cd6 AB |
4293 | static void skcipher_exit_tfm(struct crypto_skcipher *tfm) |
4294 | { | |
4295 | generic_cra_exit(crypto_skcipher_tfm(tfm)); | |
4296 | } | |
4297 | ||
9d12ba86 RR |
4298 | static void aead_cra_exit(struct crypto_aead *aead) |
4299 | { | |
4300 | struct crypto_tfm *tfm = crypto_aead_tfm(aead); | |
4301 | struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm); | |
4302 | ||
4303 | generic_cra_exit(tfm); | |
4304 | ||
4305 | if (ctx->fallback_cipher) { | |
4306 | crypto_free_aead(ctx->fallback_cipher); | |
4307 | ctx->fallback_cipher = NULL; | |
4308 | } | |
4309 | } | |
4310 | ||
4311 | /** | |
4312 | * spu_functions_register() - Specify hardware-specific SPU functions based on | |
4313 | * SPU type read from device tree. | |
4314 | * @dev: device structure | |
4315 | * @spu_type: SPU hardware generation | |
4316 | * @spu_subtype: SPU hardware version | |
4317 | */ | |
4318 | static void spu_functions_register(struct device *dev, | |
4319 | enum spu_spu_type spu_type, | |
4320 | enum spu_spu_subtype spu_subtype) | |
4321 | { | |
4322 | struct spu_hw *spu = &iproc_priv.spu; | |
4323 | ||
4324 | if (spu_type == SPU_TYPE_SPUM) { | |
4325 | dev_dbg(dev, "Registering SPUM functions"); | |
4326 | spu->spu_dump_msg_hdr = spum_dump_msg_hdr; | |
4327 | spu->spu_payload_length = spum_payload_length; | |
4328 | spu->spu_response_hdr_len = spum_response_hdr_len; | |
4329 | spu->spu_hash_pad_len = spum_hash_pad_len; | |
4330 | spu->spu_gcm_ccm_pad_len = spum_gcm_ccm_pad_len; | |
4331 | spu->spu_assoc_resp_len = spum_assoc_resp_len; | |
4332 | spu->spu_aead_ivlen = spum_aead_ivlen; | |
4333 | spu->spu_hash_type = spum_hash_type; | |
4334 | spu->spu_digest_size = spum_digest_size; | |
4335 | spu->spu_create_request = spum_create_request; | |
4336 | spu->spu_cipher_req_init = spum_cipher_req_init; | |
4337 | spu->spu_cipher_req_finish = spum_cipher_req_finish; | |
4338 | spu->spu_request_pad = spum_request_pad; | |
4339 | spu->spu_tx_status_len = spum_tx_status_len; | |
4340 | spu->spu_rx_status_len = spum_rx_status_len; | |
4341 | spu->spu_status_process = spum_status_process; | |
4342 | spu->spu_xts_tweak_in_payload = spum_xts_tweak_in_payload; | |
4343 | spu->spu_ccm_update_iv = spum_ccm_update_iv; | |
4344 | spu->spu_wordalign_padlen = spum_wordalign_padlen; | |
4345 | if (spu_subtype == SPU_SUBTYPE_SPUM_NS2) | |
4346 | spu->spu_ctx_max_payload = spum_ns2_ctx_max_payload; | |
4347 | else | |
4348 | spu->spu_ctx_max_payload = spum_nsp_ctx_max_payload; | |
4349 | } else { | |
4350 | dev_dbg(dev, "Registering SPU2 functions"); | |
4351 | spu->spu_dump_msg_hdr = spu2_dump_msg_hdr; | |
4352 | spu->spu_ctx_max_payload = spu2_ctx_max_payload; | |
4353 | spu->spu_payload_length = spu2_payload_length; | |
4354 | spu->spu_response_hdr_len = spu2_response_hdr_len; | |
4355 | spu->spu_hash_pad_len = spu2_hash_pad_len; | |
4356 | spu->spu_gcm_ccm_pad_len = spu2_gcm_ccm_pad_len; | |
4357 | spu->spu_assoc_resp_len = spu2_assoc_resp_len; | |
4358 | spu->spu_aead_ivlen = spu2_aead_ivlen; | |
4359 | spu->spu_hash_type = spu2_hash_type; | |
4360 | spu->spu_digest_size = spu2_digest_size; | |
4361 | spu->spu_create_request = spu2_create_request; | |
4362 | spu->spu_cipher_req_init = spu2_cipher_req_init; | |
4363 | spu->spu_cipher_req_finish = spu2_cipher_req_finish; | |
4364 | spu->spu_request_pad = spu2_request_pad; | |
4365 | spu->spu_tx_status_len = spu2_tx_status_len; | |
4366 | spu->spu_rx_status_len = spu2_rx_status_len; | |
4367 | spu->spu_status_process = spu2_status_process; | |
4368 | spu->spu_xts_tweak_in_payload = spu2_xts_tweak_in_payload; | |
4369 | spu->spu_ccm_update_iv = spu2_ccm_update_iv; | |
4370 | spu->spu_wordalign_padlen = spu2_wordalign_padlen; | |
4371 | } | |
4372 | } | |
4373 | ||
4374 | /** | |
4375 | * spu_mb_init() - Initialize mailbox client. Request ownership of a mailbox | |
4376 | * channel for the SPU being probed. | |
4377 | * @dev: SPU driver device structure | |
4378 | * | |
4379 | * Return: 0 if successful | |
4380 | * < 0 otherwise | |
4381 | */ | |
4382 | static int spu_mb_init(struct device *dev) | |
4383 | { | |
9166c443 | 4384 | struct mbox_client *mcl = &iproc_priv.mcl; |
4385 | int err, i; | |
4386 | ||
4387 | iproc_priv.mbox = devm_kcalloc(dev, iproc_priv.spu.num_chan, | |
4388 | sizeof(struct mbox_chan *), GFP_KERNEL); | |
4389 | if (!iproc_priv.mbox) | |
4390 | return -ENOMEM; | |
9d12ba86 RR |
4391 | |
4392 | mcl->dev = dev; | |
4393 | mcl->tx_block = false; | |
4394 | mcl->tx_tout = 0; | |
f0e2ce58 | 4395 | mcl->knows_txdone = true; |
9d12ba86 RR |
4396 | mcl->rx_callback = spu_rx_callback; |
4397 | mcl->tx_done = NULL; | |
4398 | ||
9166c443 | 4399 | for (i = 0; i < iproc_priv.spu.num_chan; i++) { |
4400 | iproc_priv.mbox[i] = mbox_request_channel(mcl, i); | |
4401 | if (IS_ERR(iproc_priv.mbox[i])) { | |
42a13ddb | 4402 | err = PTR_ERR(iproc_priv.mbox[i]); |
9166c443 | 4403 | dev_err(dev, |
4404 | "Mbox channel %d request failed with err %d", | |
4405 | i, err); | |
4406 | iproc_priv.mbox[i] = NULL; | |
4407 | goto free_channels; | |
4408 | } | |
9d12ba86 RR |
4409 | } |
4410 | ||
4411 | return 0; | |
9166c443 | 4412 | free_channels: |
4413 | for (i = 0; i < iproc_priv.spu.num_chan; i++) { | |
4414 | if (iproc_priv.mbox[i]) | |
4415 | mbox_free_channel(iproc_priv.mbox[i]); | |
4416 | } | |
4417 | ||
4418 | return err; | |
9d12ba86 RR |
4419 | } |
4420 | ||
4421 | static void spu_mb_release(struct platform_device *pdev) | |
4422 | { | |
4423 | int i; | |
4424 | ||
9166c443 | 4425 | for (i = 0; i < iproc_priv.spu.num_chan; i++) |
9d12ba86 RR |
4426 | mbox_free_channel(iproc_priv.mbox[i]); |
4427 | } | |
4428 | ||
4429 | static void spu_counters_init(void) | |
4430 | { | |
4431 | int i; | |
4432 | int j; | |
4433 | ||
4434 | atomic_set(&iproc_priv.session_count, 0); | |
4435 | atomic_set(&iproc_priv.stream_count, 0); | |
9166c443 | 4436 | atomic_set(&iproc_priv.next_chan, (int)iproc_priv.spu.num_chan); |
9d12ba86 RR |
4437 | atomic64_set(&iproc_priv.bytes_in, 0); |
4438 | atomic64_set(&iproc_priv.bytes_out, 0); | |
4439 | for (i = 0; i < SPU_OP_NUM; i++) { | |
4440 | atomic_set(&iproc_priv.op_counts[i], 0); | |
4441 | atomic_set(&iproc_priv.setkey_cnt[i], 0); | |
4442 | } | |
4443 | for (i = 0; i < CIPHER_ALG_LAST; i++) | |
4444 | for (j = 0; j < CIPHER_MODE_LAST; j++) | |
4445 | atomic_set(&iproc_priv.cipher_cnt[i][j], 0); | |
4446 | ||
4447 | for (i = 0; i < HASH_ALG_LAST; i++) { | |
4448 | atomic_set(&iproc_priv.hash_cnt[i], 0); | |
4449 | atomic_set(&iproc_priv.hmac_cnt[i], 0); | |
4450 | } | |
4451 | for (i = 0; i < AEAD_TYPE_LAST; i++) | |
4452 | atomic_set(&iproc_priv.aead_cnt[i], 0); | |
4453 | ||
4454 | atomic_set(&iproc_priv.mb_no_spc, 0); | |
4455 | atomic_set(&iproc_priv.mb_send_fail, 0); | |
4456 | atomic_set(&iproc_priv.bad_icv, 0); | |
4457 | } | |
4458 | ||
a9c01cd6 | 4459 | static int spu_register_skcipher(struct iproc_alg_s *driver_alg) |
9d12ba86 | 4460 | { |
a9c01cd6 | 4461 | struct skcipher_alg *crypto = &driver_alg->alg.skcipher; |
9d12ba86 RR |
4462 | int err; |
4463 | ||
a9c01cd6 AB |
4464 | crypto->base.cra_module = THIS_MODULE; |
4465 | crypto->base.cra_priority = cipher_pri; | |
4466 | crypto->base.cra_alignmask = 0; | |
4467 | crypto->base.cra_ctxsize = sizeof(struct iproc_ctx_s); | |
b8aa7dc5 MP |
4468 | crypto->base.cra_flags = CRYPTO_ALG_ASYNC | |
4469 | CRYPTO_ALG_ALLOCATES_MEMORY | | |
4470 | CRYPTO_ALG_KERN_DRIVER_ONLY; | |
9d12ba86 | 4471 | |
a9c01cd6 AB |
4472 | crypto->init = skcipher_init_tfm; |
4473 | crypto->exit = skcipher_exit_tfm; | |
4474 | crypto->setkey = skcipher_setkey; | |
4475 | crypto->encrypt = skcipher_encrypt; | |
4476 | crypto->decrypt = skcipher_decrypt; | |
9d12ba86 | 4477 | |
a9c01cd6 | 4478 | err = crypto_register_skcipher(crypto); |
9d12ba86 RR |
4479 | /* Mark alg as having been registered, if successful */ |
4480 | if (err == 0) | |
4481 | driver_alg->registered = true; | |
a9c01cd6 | 4482 | pr_debug(" registered skcipher %s\n", crypto->base.cra_driver_name); |
9d12ba86 RR |
4483 | return err; |
4484 | } | |
4485 | ||
4486 | static int spu_register_ahash(struct iproc_alg_s *driver_alg) | |
4487 | { | |
4488 | struct spu_hw *spu = &iproc_priv.spu; | |
4489 | struct ahash_alg *hash = &driver_alg->alg.hash; | |
4490 | int err; | |
4491 | ||
4492 | /* AES-XCBC is the only AES hash type currently supported on SPU-M */ | |
4493 | if ((driver_alg->auth_info.alg == HASH_ALG_AES) && | |
4494 | (driver_alg->auth_info.mode != HASH_MODE_XCBC) && | |
4495 | (spu->spu_type == SPU_TYPE_SPUM)) | |
4496 | return 0; | |
4497 | ||
4498 | /* SHA3 algorithm variants are not registered for SPU-M or SPU2. */ | |
4499 | if ((driver_alg->auth_info.alg >= HASH_ALG_SHA3_224) && | |
4500 | (spu->spu_subtype != SPU_SUBTYPE_SPU2_V2)) | |
4501 | return 0; | |
4502 | ||
4503 | hash->halg.base.cra_module = THIS_MODULE; | |
4504 | hash->halg.base.cra_priority = hash_pri; | |
4505 | hash->halg.base.cra_alignmask = 0; | |
4506 | hash->halg.base.cra_ctxsize = sizeof(struct iproc_ctx_s); | |
4507 | hash->halg.base.cra_init = ahash_cra_init; | |
4508 | hash->halg.base.cra_exit = generic_cra_exit; | |
b8aa7dc5 MP |
4509 | hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC | |
4510 | CRYPTO_ALG_ALLOCATES_MEMORY; | |
9d12ba86 RR |
4511 | hash->halg.statesize = sizeof(struct spu_hash_export_s); |
4512 | ||
4513 | if (driver_alg->auth_info.mode != HASH_MODE_HMAC) { | |
9d12ba86 RR |
4514 | hash->init = ahash_init; |
4515 | hash->update = ahash_update; | |
4516 | hash->final = ahash_final; | |
4517 | hash->finup = ahash_finup; | |
4518 | hash->digest = ahash_digest; | |
4f0129d1 RP |
4519 | if ((driver_alg->auth_info.alg == HASH_ALG_AES) && |
4520 | ((driver_alg->auth_info.mode == HASH_MODE_XCBC) || | |
4521 | (driver_alg->auth_info.mode == HASH_MODE_CMAC))) { | |
4522 | hash->setkey = ahash_setkey; | |
4523 | } | |
9d12ba86 RR |
4524 | } else { |
4525 | hash->setkey = ahash_hmac_setkey; | |
4526 | hash->init = ahash_hmac_init; | |
4527 | hash->update = ahash_hmac_update; | |
4528 | hash->final = ahash_hmac_final; | |
4529 | hash->finup = ahash_hmac_finup; | |
4530 | hash->digest = ahash_hmac_digest; | |
4531 | } | |
4532 | hash->export = ahash_export; | |
4533 | hash->import = ahash_import; | |
4534 | ||
4535 | err = crypto_register_ahash(hash); | |
4536 | /* Mark alg as having been registered, if successful */ | |
4537 | if (err == 0) | |
4538 | driver_alg->registered = true; | |
4539 | pr_debug(" registered ahash %s\n", | |
4540 | hash->halg.base.cra_driver_name); | |
4541 | return err; | |
4542 | } | |
4543 | ||
4544 | static int spu_register_aead(struct iproc_alg_s *driver_alg) | |
4545 | { | |
4546 | struct aead_alg *aead = &driver_alg->alg.aead; | |
4547 | int err; | |
4548 | ||
4549 | aead->base.cra_module = THIS_MODULE; | |
4550 | aead->base.cra_priority = aead_pri; | |
4551 | aead->base.cra_alignmask = 0; | |
4552 | aead->base.cra_ctxsize = sizeof(struct iproc_ctx_s); | |
9d12ba86 | 4553 | |
b8aa7dc5 | 4554 | aead->base.cra_flags |= CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY; |
9d12ba86 RR |
4555 | /* setkey set in alg initialization */ |
4556 | aead->setauthsize = aead_setauthsize; | |
4557 | aead->encrypt = aead_encrypt; | |
4558 | aead->decrypt = aead_decrypt; | |
4559 | aead->init = aead_cra_init; | |
4560 | aead->exit = aead_cra_exit; | |
4561 | ||
4562 | err = crypto_register_aead(aead); | |
4563 | /* Mark alg as having been registered, if successful */ | |
4564 | if (err == 0) | |
4565 | driver_alg->registered = true; | |
4566 | pr_debug(" registered aead %s\n", aead->base.cra_driver_name); | |
4567 | return err; | |
4568 | } | |
4569 | ||
4570 | /* register crypto algorithms the device supports */ | |
4571 | static int spu_algs_register(struct device *dev) | |
4572 | { | |
4573 | int i, j; | |
4574 | int err; | |
4575 | ||
4576 | for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { | |
4577 | switch (driver_algs[i].type) { | |
a9c01cd6 AB |
4578 | case CRYPTO_ALG_TYPE_SKCIPHER: |
4579 | err = spu_register_skcipher(&driver_algs[i]); | |
9d12ba86 RR |
4580 | break; |
4581 | case CRYPTO_ALG_TYPE_AHASH: | |
4582 | err = spu_register_ahash(&driver_algs[i]); | |
4583 | break; | |
4584 | case CRYPTO_ALG_TYPE_AEAD: | |
4585 | err = spu_register_aead(&driver_algs[i]); | |
4586 | break; | |
4587 | default: | |
4588 | dev_err(dev, | |
4589 | "iproc-crypto: unknown alg type: %d", | |
4590 | driver_algs[i].type); | |
4591 | err = -EINVAL; | |
4592 | } | |
4593 | ||
4594 | if (err) { | |
4595 | dev_err(dev, "alg registration failed with error %d\n", | |
4596 | err); | |
4597 | goto err_algs; | |
4598 | } | |
4599 | } | |
4600 | ||
4601 | return 0; | |
4602 | ||
4603 | err_algs: | |
4604 | for (j = 0; j < i; j++) { | |
4605 | /* Skip any algorithm not registered */ | |
4606 | if (!driver_algs[j].registered) | |
4607 | continue; | |
4608 | switch (driver_algs[j].type) { | |
a9c01cd6 AB |
4609 | case CRYPTO_ALG_TYPE_SKCIPHER: |
4610 | crypto_unregister_skcipher(&driver_algs[j].alg.skcipher); | |
9d12ba86 RR |
4611 | driver_algs[j].registered = false; |
4612 | break; | |
4613 | case CRYPTO_ALG_TYPE_AHASH: | |
4614 | crypto_unregister_ahash(&driver_algs[j].alg.hash); | |
4615 | driver_algs[j].registered = false; | |
4616 | break; | |
4617 | case CRYPTO_ALG_TYPE_AEAD: | |
4618 | crypto_unregister_aead(&driver_algs[j].alg.aead); | |
4619 | driver_algs[j].registered = false; | |
4620 | break; | |
4621 | } | |
4622 | } | |
4623 | return err; | |
4624 | } | |
4625 | ||
4626 | /* ==================== Kernel Platform API ==================== */ | |
4627 | ||
4628 | static struct spu_type_subtype spum_ns2_types = { | |
4629 | SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NS2 | |
4630 | }; | |
4631 | ||
4632 | static struct spu_type_subtype spum_nsp_types = { | |
4633 | SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NSP | |
4634 | }; | |
4635 | ||
4636 | static struct spu_type_subtype spu2_types = { | |
4637 | SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V1 | |
4638 | }; | |
4639 | ||
4640 | static struct spu_type_subtype spu2_v2_types = { | |
4641 | SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V2 | |
4642 | }; | |
4643 | ||
4644 | static const struct of_device_id bcm_spu_dt_ids[] = { | |
4645 | { | |
4646 | .compatible = "brcm,spum-crypto", | |
4647 | .data = &spum_ns2_types, | |
4648 | }, | |
4649 | { | |
4650 | .compatible = "brcm,spum-nsp-crypto", | |
4651 | .data = &spum_nsp_types, | |
4652 | }, | |
4653 | { | |
4654 | .compatible = "brcm,spu2-crypto", | |
4655 | .data = &spu2_types, | |
4656 | }, | |
4657 | { | |
4658 | .compatible = "brcm,spu2-v2-crypto", | |
4659 | .data = &spu2_v2_types, | |
4660 | }, | |
4661 | { /* sentinel */ } | |
4662 | }; | |
4663 | ||
4664 | MODULE_DEVICE_TABLE(of, bcm_spu_dt_ids); | |
4665 | ||
4666 | static int spu_dt_read(struct platform_device *pdev) | |
4667 | { | |
4668 | struct device *dev = &pdev->dev; | |
4669 | struct spu_hw *spu = &iproc_priv.spu; | |
4670 | struct resource *spu_ctrl_regs; | |
9d12ba86 | 4671 | const struct spu_type_subtype *matched_spu_type; |
9166c443 | 4672 | struct device_node *dn = pdev->dev.of_node; |
4673 | int err, i; | |
4674 | ||
4675 | /* Count number of mailbox channels */ | |
4676 | spu->num_chan = of_count_phandle_with_args(dn, "mboxes", "#mbox-cells"); | |
9d12ba86 | 4677 | |
d9fa482e CL |
4678 | matched_spu_type = of_device_get_match_data(dev); |
4679 | if (!matched_spu_type) { | |
3f7819bd | 4680 | dev_err(dev, "Failed to match device\n"); |
c6090480 GS |
4681 | return -ENODEV; |
4682 | } | |
4683 | ||
9166c443 | 4684 | spu->spu_type = matched_spu_type->type; |
4685 | spu->spu_subtype = matched_spu_type->subtype; | |
9d12ba86 | 4686 | |
9166c443 | 4687 | for (i = 0; (i < MAX_SPUS) && ((spu_ctrl_regs = |
4688 | platform_get_resource(pdev, IORESOURCE_MEM, i)) != NULL); i++) { | |
9d12ba86 | 4689 | |
9166c443 | 4690 | spu->reg_vbase[i] = devm_ioremap_resource(dev, spu_ctrl_regs); |
4691 | if (IS_ERR(spu->reg_vbase[i])) { | |
4692 | err = PTR_ERR(spu->reg_vbase[i]); | |
3f7819bd | 4693 | dev_err(dev, "Failed to map registers: %d\n", |
9166c443 | 4694 | err); |
4695 | spu->reg_vbase[i] = NULL; | |
4696 | return err; | |
4697 | } | |
9d12ba86 | 4698 | } |
9166c443 | 4699 | spu->num_spu = i; |
4700 | dev_dbg(dev, "Device has %d SPUs", spu->num_spu); | |
9d12ba86 RR |
4701 | |
4702 | return 0; | |
4703 | } | |
4704 | ||
dd508618 | 4705 | static int bcm_spu_probe(struct platform_device *pdev) |
9d12ba86 RR |
4706 | { |
4707 | struct device *dev = &pdev->dev; | |
4708 | struct spu_hw *spu = &iproc_priv.spu; | |
12b3cf90 | 4709 | int err; |
9d12ba86 | 4710 | |
9166c443 | 4711 | iproc_priv.pdev = pdev; |
4712 | platform_set_drvdata(iproc_priv.pdev, | |
9d12ba86 RR |
4713 | &iproc_priv); |
4714 | ||
4715 | err = spu_dt_read(pdev); | |
4716 | if (err < 0) | |
4717 | goto failure; | |
4718 | ||
3f7819bd | 4719 | err = spu_mb_init(dev); |
9d12ba86 RR |
4720 | if (err < 0) |
4721 | goto failure; | |
4722 | ||
9d12ba86 RR |
4723 | if (spu->spu_type == SPU_TYPE_SPUM) |
4724 | iproc_priv.bcm_hdr_len = 8; | |
4725 | else if (spu->spu_type == SPU_TYPE_SPU2) | |
4726 | iproc_priv.bcm_hdr_len = 0; | |
4727 | ||
3f7819bd | 4728 | spu_functions_register(dev, spu->spu_type, spu->spu_subtype); |
9d12ba86 RR |
4729 | |
4730 | spu_counters_init(); | |
4731 | ||
4732 | spu_setup_debugfs(); | |
4733 | ||
4734 | err = spu_algs_register(dev); | |
4735 | if (err < 0) | |
4736 | goto fail_reg; | |
4737 | ||
9d12ba86 RR |
4738 | return 0; |
4739 | ||
4740 | fail_reg: | |
4741 | spu_free_debugfs(); | |
4742 | failure: | |
4743 | spu_mb_release(pdev); | |
4744 | dev_err(dev, "%s failed with error %d.\n", __func__, err); | |
4745 | ||
4746 | return err; | |
4747 | } | |
4748 | ||
dd508618 | 4749 | static int bcm_spu_remove(struct platform_device *pdev) |
9d12ba86 RR |
4750 | { |
4751 | int i; | |
4752 | struct device *dev = &pdev->dev; | |
4753 | char *cdn; | |
4754 | ||
4755 | for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { | |
4756 | /* | |
4757 | * Not all algorithms were registered, depending on whether | |
4758 | * hardware is SPU or SPU2. So here we make sure to skip | |
4759 | * those algorithms that were not previously registered. | |
4760 | */ | |
4761 | if (!driver_algs[i].registered) | |
4762 | continue; | |
4763 | ||
4764 | switch (driver_algs[i].type) { | |
a9c01cd6 AB |
4765 | case CRYPTO_ALG_TYPE_SKCIPHER: |
4766 | crypto_unregister_skcipher(&driver_algs[i].alg.skcipher); | |
9d12ba86 | 4767 | dev_dbg(dev, " unregistered cipher %s\n", |
a9c01cd6 | 4768 | driver_algs[i].alg.skcipher.base.cra_driver_name); |
9d12ba86 RR |
4769 | driver_algs[i].registered = false; |
4770 | break; | |
4771 | case CRYPTO_ALG_TYPE_AHASH: | |
4772 | crypto_unregister_ahash(&driver_algs[i].alg.hash); | |
4773 | cdn = driver_algs[i].alg.hash.halg.base.cra_driver_name; | |
4774 | dev_dbg(dev, " unregistered hash %s\n", cdn); | |
4775 | driver_algs[i].registered = false; | |
4776 | break; | |
4777 | case CRYPTO_ALG_TYPE_AEAD: | |
4778 | crypto_unregister_aead(&driver_algs[i].alg.aead); | |
4779 | dev_dbg(dev, " unregistered aead %s\n", | |
4780 | driver_algs[i].alg.aead.base.cra_driver_name); | |
4781 | driver_algs[i].registered = false; | |
4782 | break; | |
4783 | } | |
4784 | } | |
4785 | spu_free_debugfs(); | |
4786 | spu_mb_release(pdev); | |
4787 | return 0; | |
4788 | } | |
4789 | ||
4790 | /* ===== Kernel Module API ===== */ | |
4791 | ||
4792 | static struct platform_driver bcm_spu_pdriver = { | |
4793 | .driver = { | |
4794 | .name = "brcm-spu-crypto", | |
4795 | .of_match_table = of_match_ptr(bcm_spu_dt_ids), | |
4796 | }, | |
4797 | .probe = bcm_spu_probe, | |
4798 | .remove = bcm_spu_remove, | |
4799 | }; | |
4800 | module_platform_driver(bcm_spu_pdriver); | |
4801 | ||
4802 | MODULE_AUTHOR("Rob Rice <rob.rice@broadcom.com>"); | |
4803 | MODULE_DESCRIPTION("Broadcom symmetric crypto offload driver"); | |
4804 | MODULE_LICENSE("GPL v2"); |