2 * Copyright 2016 Broadcom
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2, as
6 * published by the Free Software Foundation (the "GPL").
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License version 2 (GPLv2) for more details.
13 * You should have received a copy of the GNU General Public License
14 * version 2 (GPLv2) along with this source code.
17 #include <linux/err.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/errno.h>
21 #include <linux/kernel.h>
22 #include <linux/interrupt.h>
23 #include <linux/platform_device.h>
24 #include <linux/scatterlist.h>
25 #include <linux/crypto.h>
26 #include <linux/kthread.h>
27 #include <linux/rtnetlink.h>
28 #include <linux/sched.h>
29 #include <linux/of_address.h>
30 #include <linux/of_device.h>
32 #include <linux/bitops.h>
34 #include <crypto/algapi.h>
35 #include <crypto/aead.h>
36 #include <crypto/internal/aead.h>
37 #include <crypto/aes.h>
38 #include <crypto/des.h>
39 #include <crypto/hmac.h>
40 #include <crypto/sha.h>
41 #include <crypto/md5.h>
42 #include <crypto/authenc.h>
43 #include <crypto/skcipher.h>
44 #include <crypto/hash.h>
45 #include <crypto/sha3.h>
53 /* ================= Device Structure ================== */
55 struct device_private iproc_priv;
57 /* ==================== Parameters ===================== */
59 int flow_debug_logging;
60 module_param(flow_debug_logging, int, 0644);
61 MODULE_PARM_DESC(flow_debug_logging, "Enable Flow Debug Logging");
63 int packet_debug_logging;
64 module_param(packet_debug_logging, int, 0644);
65 MODULE_PARM_DESC(packet_debug_logging, "Enable Packet Debug Logging");
67 int debug_logging_sleep;
68 module_param(debug_logging_sleep, int, 0644);
69 MODULE_PARM_DESC(debug_logging_sleep, "Packet Debug Logging Sleep");
72 * The value of these module parameters is used to set the priority for each
73 * algo type when this driver registers algos with the kernel crypto API.
74 * To use a priority other than the default, set the priority in the insmod or
75 * modprobe. Changing the module priority after init time has no effect.
77 * The default priorities are chosen to be lower (less preferred) than ARMv8 CE
78 * algos, but more preferred than generic software algos.
80 static int cipher_pri = 150;
81 module_param(cipher_pri, int, 0644);
82 MODULE_PARM_DESC(cipher_pri, "Priority for cipher algos");
84 static int hash_pri = 100;
85 module_param(hash_pri, int, 0644);
86 MODULE_PARM_DESC(hash_pri, "Priority for hash algos");
88 static int aead_pri = 150;
89 module_param(aead_pri, int, 0644);
90 MODULE_PARM_DESC(aead_pri, "Priority for AEAD algos");
92 /* A type 3 BCM header, expected to precede the SPU header for SPU-M.
93 * Bits 3 and 4 in the first byte encode the channel number (the dma ringset).
99 char BCMHEADER[] = { 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28 };
101 * Some SPU hw does not use BCM header on SPU messages. So BCM_HDR_LEN
102 * is set dynamically after reading SPU type from device tree.
104 #define BCM_HDR_LEN iproc_priv.bcm_hdr_len
106 /* min and max time to sleep before retrying when mbox queue is full. usec */
107 #define MBOX_SLEEP_MIN 800
108 #define MBOX_SLEEP_MAX 1000
111 * select_channel() - Select a SPU channel to handle a crypto request. Selects
112 * channel in round robin order.
114 * Return: channel index
116 static u8 select_channel(void)
118 u8 chan_idx = atomic_inc_return(&iproc_priv.next_chan);
120 return chan_idx % iproc_priv.spu.num_chan;
124 * spu_ablkcipher_rx_sg_create() - Build up the scatterlist of buffers used to
125 * receive a SPU response message for an ablkcipher request. Includes buffers to
126 * catch SPU message headers and the response data.
127 * @mssg: mailbox message containing the receive sg
128 * @rctx: crypto request context
129 * @rx_frag_num: number of scatterlist elements required to hold the
130 * SPU response message
131 * @chunksize: Number of bytes of response data expected
132 * @stat_pad_len: Number of bytes required to pad the STAT field to
135 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
136 * when the request completes, whether the request is handled successfully or
144 spu_ablkcipher_rx_sg_create(struct brcm_message *mssg,
145 struct iproc_reqctx_s *rctx,
147 unsigned int chunksize, u32 stat_pad_len)
149 struct spu_hw *spu = &iproc_priv.spu;
150 struct scatterlist *sg; /* used to build sgs in mbox message */
151 struct iproc_ctx_s *ctx = rctx->ctx;
152 u32 datalen; /* Number of bytes of response data expected */
154 mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),
160 sg_init_table(sg, rx_frag_num);
161 /* Space for SPU message header */
162 sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);
164 /* If XTS tweak in payload, add buffer to receive encrypted tweak */
165 if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
166 spu->spu_xts_tweak_in_payload())
167 sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak,
170 /* Copy in each dst sg entry from request, up to chunksize */
171 datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip,
172 rctx->dst_nents, chunksize);
173 if (datalen < chunksize) {
174 pr_err("%s(): failed to copy dst sg to mbox msg. chunksize %u, datalen %u",
175 __func__, chunksize, datalen);
179 if (ctx->cipher.alg == CIPHER_ALG_RC4)
180 /* Add buffer to catch 260-byte SUPDT field for RC4 */
181 sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak, SPU_SUPDT_LEN);
184 sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);
186 memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);
187 sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());
193 * spu_ablkcipher_tx_sg_create() - Build up the scatterlist of buffers used to
194 * send a SPU request message for an ablkcipher request. Includes SPU message
195 * headers and the request data.
196 * @mssg: mailbox message containing the transmit sg
197 * @rctx: crypto request context
198 * @tx_frag_num: number of scatterlist elements required to construct the
199 * SPU request message
200 * @chunksize: Number of bytes of request data
201 * @pad_len: Number of pad bytes
203 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
204 * when the request completes, whether the request is handled successfully or
212 spu_ablkcipher_tx_sg_create(struct brcm_message *mssg,
213 struct iproc_reqctx_s *rctx,
214 u8 tx_frag_num, unsigned int chunksize, u32 pad_len)
216 struct spu_hw *spu = &iproc_priv.spu;
217 struct scatterlist *sg; /* used to build sgs in mbox message */
218 struct iproc_ctx_s *ctx = rctx->ctx;
219 u32 datalen; /* Number of bytes of response data expected */
222 mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),
224 if (unlikely(!mssg->spu.src))
228 sg_init_table(sg, tx_frag_num);
230 sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,
231 BCM_HDR_LEN + ctx->spu_req_hdr_len);
233 /* if XTS tweak in payload, copy from IV (where crypto API puts it) */
234 if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
235 spu->spu_xts_tweak_in_payload())
236 sg_set_buf(sg++, rctx->msg_buf.iv_ctr, SPU_XTS_TWEAK_SIZE);
238 /* Copy in each src sg entry from request, up to chunksize */
239 datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,
240 rctx->src_nents, chunksize);
241 if (unlikely(datalen < chunksize)) {
242 pr_err("%s(): failed to copy src sg to mbox msg",
248 sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);
250 stat_len = spu->spu_tx_status_len();
252 memset(rctx->msg_buf.tx_stat, 0, stat_len);
253 sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);
258 static int mailbox_send_message(struct brcm_message *mssg, u32 flags,
263 struct device *dev = &(iproc_priv.pdev->dev);
265 err = mbox_send_message(iproc_priv.mbox[chan_idx], mssg);
266 if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) {
267 while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) {
269 * Mailbox queue is full. Since MAY_SLEEP is set, assume
270 * not in atomic context and we can wait and try again.
273 usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX);
274 err = mbox_send_message(iproc_priv.mbox[chan_idx],
276 atomic_inc(&iproc_priv.mb_no_spc);
280 atomic_inc(&iproc_priv.mb_send_fail);
284 /* Check error returned by mailbox controller */
286 if (unlikely(err < 0)) {
287 dev_err(dev, "message error %d", err);
288 /* Signal txdone for mailbox channel */
291 /* Signal txdone for mailbox channel */
292 mbox_client_txdone(iproc_priv.mbox[chan_idx], err);
297 * handle_ablkcipher_req() - Submit as much of a block cipher request as fits in
298 * a single SPU request message, starting at the current position in the request
300 * @rctx: Crypto request context
302 * This may be called on the crypto API thread, or, when a request is so large
303 * it must be broken into multiple SPU messages, on the thread used to invoke
304 * the response callback. When requests are broken into multiple SPU
305 * messages, we assume subsequent messages depend on previous results, and
306 * thus always wait for previous results before submitting the next message.
307 * Because requests are submitted in lock step like this, there is no need
308 * to synchronize access to request data structures.
310 * Return: -EINPROGRESS: request has been accepted and result will be returned
312 * Any other value indicates an error
314 static int handle_ablkcipher_req(struct iproc_reqctx_s *rctx)
316 struct spu_hw *spu = &iproc_priv.spu;
317 struct crypto_async_request *areq = rctx->parent;
318 struct ablkcipher_request *req =
319 container_of(areq, struct ablkcipher_request, base);
320 struct iproc_ctx_s *ctx = rctx->ctx;
321 struct spu_cipher_parms cipher_parms;
323 unsigned int chunksize = 0; /* Num bytes of request to submit */
324 int remaining = 0; /* Bytes of request still to process */
325 int chunk_start; /* Beginning of data for current SPU msg */
327 /* IV or ctr value to use in this SPU msg */
328 u8 local_iv_ctr[MAX_IV_SIZE];
329 u32 stat_pad_len; /* num bytes to align status field */
330 u32 pad_len; /* total length of all padding */
331 bool update_key = false;
332 struct brcm_message *mssg; /* mailbox message */
334 /* number of entries in src and dst sg in mailbox message. */
335 u8 rx_frag_num = 2; /* response header and STATUS */
336 u8 tx_frag_num = 1; /* request header */
338 flow_log("%s\n", __func__);
340 cipher_parms.alg = ctx->cipher.alg;
341 cipher_parms.mode = ctx->cipher.mode;
342 cipher_parms.type = ctx->cipher_type;
343 cipher_parms.key_len = ctx->enckeylen;
344 cipher_parms.key_buf = ctx->enckey;
345 cipher_parms.iv_buf = local_iv_ctr;
346 cipher_parms.iv_len = rctx->iv_ctr_len;
348 mssg = &rctx->mb_mssg;
349 chunk_start = rctx->src_sent;
350 remaining = rctx->total_todo - chunk_start;
352 /* determine the chunk we are breaking off and update the indexes */
353 if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&
354 (remaining > ctx->max_payload))
355 chunksize = ctx->max_payload;
357 chunksize = remaining;
359 rctx->src_sent += chunksize;
360 rctx->total_sent = rctx->src_sent;
362 /* Count number of sg entries to be included in this request */
363 rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize);
364 rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize);
366 if ((ctx->cipher.mode == CIPHER_MODE_CBC) &&
367 rctx->is_encrypt && chunk_start)
369 * Encrypting non-first first chunk. Copy last block of
370 * previous result to IV for this chunk.
372 sg_copy_part_to_buf(req->dst, rctx->msg_buf.iv_ctr,
374 chunk_start - rctx->iv_ctr_len);
376 if (rctx->iv_ctr_len) {
377 /* get our local copy of the iv */
378 __builtin_memcpy(local_iv_ctr, rctx->msg_buf.iv_ctr,
381 /* generate the next IV if possible */
382 if ((ctx->cipher.mode == CIPHER_MODE_CBC) &&
385 * CBC Decrypt: next IV is the last ciphertext block in
388 sg_copy_part_to_buf(req->src, rctx->msg_buf.iv_ctr,
390 rctx->src_sent - rctx->iv_ctr_len);
391 } else if (ctx->cipher.mode == CIPHER_MODE_CTR) {
393 * The SPU hardware increments the counter once for
394 * each AES block of 16 bytes. So update the counter
395 * for the next chunk, if there is one. Note that for
396 * this chunk, the counter has already been copied to
397 * local_iv_ctr. We can assume a block size of 16,
398 * because we only support CTR mode for AES, not for
399 * any other cipher alg.
401 add_to_ctr(rctx->msg_buf.iv_ctr, chunksize >> 4);
405 if (ctx->cipher.alg == CIPHER_ALG_RC4) {
409 * for non-first RC4 chunks, use SUPDT from previous
410 * response as key for this chunk.
412 cipher_parms.key_buf = rctx->msg_buf.c.supdt_tweak;
414 cipher_parms.type = CIPHER_TYPE_UPDT;
415 } else if (!rctx->is_encrypt) {
417 * First RC4 chunk. For decrypt, key in pre-built msg
418 * header may have been changed if encrypt required
419 * multiple chunks. So revert the key to the
423 cipher_parms.type = CIPHER_TYPE_INIT;
427 if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
428 flow_log("max_payload infinite\n");
430 flow_log("max_payload %u\n", ctx->max_payload);
432 flow_log("sent:%u start:%u remains:%u size:%u\n",
433 rctx->src_sent, chunk_start, remaining, chunksize);
435 /* Copy SPU header template created at setkey time */
436 memcpy(rctx->msg_buf.bcm_spu_req_hdr, ctx->bcm_spu_req_hdr,
437 sizeof(rctx->msg_buf.bcm_spu_req_hdr));
440 * Pass SUPDT field as key. Key field in finish() call is only used
441 * when update_key has been set above for RC4. Will be ignored in
444 spu->spu_cipher_req_finish(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
445 ctx->spu_req_hdr_len, !(rctx->is_encrypt),
446 &cipher_parms, update_key, chunksize);
448 atomic64_add(chunksize, &iproc_priv.bytes_out);
450 stat_pad_len = spu->spu_wordalign_padlen(chunksize);
453 pad_len = stat_pad_len;
456 spu->spu_request_pad(rctx->msg_buf.spu_req_pad, 0,
457 0, ctx->auth.alg, ctx->auth.mode,
458 rctx->total_sent, stat_pad_len);
461 spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
462 ctx->spu_req_hdr_len);
463 packet_log("payload:\n");
464 dump_sg(rctx->src_sg, rctx->src_skip, chunksize);
465 packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len);
468 * Build mailbox message containing SPU request msg and rx buffers
469 * to catch response message
471 memset(mssg, 0, sizeof(*mssg));
472 mssg->type = BRCM_MESSAGE_SPU;
473 mssg->ctx = rctx; /* Will be returned in response */
475 /* Create rx scatterlist to catch result */
476 rx_frag_num += rctx->dst_nents;
478 if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
479 spu->spu_xts_tweak_in_payload())
480 rx_frag_num++; /* extra sg to insert tweak */
482 err = spu_ablkcipher_rx_sg_create(mssg, rctx, rx_frag_num, chunksize,
487 /* Create tx scatterlist containing SPU request message */
488 tx_frag_num += rctx->src_nents;
489 if (spu->spu_tx_status_len())
492 if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
493 spu->spu_xts_tweak_in_payload())
494 tx_frag_num++; /* extra sg to insert tweak */
496 err = spu_ablkcipher_tx_sg_create(mssg, rctx, tx_frag_num, chunksize,
501 err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
502 if (unlikely(err < 0))
509 * handle_ablkcipher_resp() - Process a block cipher SPU response. Updates the
510 * total received count for the request and updates global stats.
511 * @rctx: Crypto request context
513 static void handle_ablkcipher_resp(struct iproc_reqctx_s *rctx)
515 struct spu_hw *spu = &iproc_priv.spu;
517 struct crypto_async_request *areq = rctx->parent;
518 struct ablkcipher_request *req = ablkcipher_request_cast(areq);
520 struct iproc_ctx_s *ctx = rctx->ctx;
523 /* See how much data was returned */
524 payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr);
527 * In XTS mode, the first SPU_XTS_TWEAK_SIZE bytes may be the
528 * encrypted tweak ("i") value; we don't count those.
530 if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
531 spu->spu_xts_tweak_in_payload() &&
532 (payload_len >= SPU_XTS_TWEAK_SIZE))
533 payload_len -= SPU_XTS_TWEAK_SIZE;
535 atomic64_add(payload_len, &iproc_priv.bytes_in);
537 flow_log("%s() offset: %u, bd_len: %u BD:\n",
538 __func__, rctx->total_received, payload_len);
540 dump_sg(req->dst, rctx->total_received, payload_len);
541 if (ctx->cipher.alg == CIPHER_ALG_RC4)
542 packet_dump(" supdt ", rctx->msg_buf.c.supdt_tweak,
545 rctx->total_received += payload_len;
546 if (rctx->total_received == rctx->total_todo) {
547 atomic_inc(&iproc_priv.op_counts[SPU_OP_CIPHER]);
549 &iproc_priv.cipher_cnt[ctx->cipher.alg][ctx->cipher.mode]);
554 * spu_ahash_rx_sg_create() - Build up the scatterlist of buffers used to
555 * receive a SPU response message for an ahash request.
556 * @mssg: mailbox message containing the receive sg
557 * @rctx: crypto request context
558 * @rx_frag_num: number of scatterlist elements required to hold the
559 * SPU response message
560 * @digestsize: length of hash digest, in bytes
561 * @stat_pad_len: Number of bytes required to pad the STAT field to
564 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
565 * when the request completes, whether the request is handled successfully or
573 spu_ahash_rx_sg_create(struct brcm_message *mssg,
574 struct iproc_reqctx_s *rctx,
575 u8 rx_frag_num, unsigned int digestsize,
578 struct spu_hw *spu = &iproc_priv.spu;
579 struct scatterlist *sg; /* used to build sgs in mbox message */
580 struct iproc_ctx_s *ctx = rctx->ctx;
582 mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),
588 sg_init_table(sg, rx_frag_num);
589 /* Space for SPU message header */
590 sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);
592 /* Space for digest */
593 sg_set_buf(sg++, rctx->msg_buf.digest, digestsize);
596 sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);
598 memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);
599 sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());
604 * spu_ahash_tx_sg_create() - Build up the scatterlist of buffers used to send
605 * a SPU request message for an ahash request. Includes SPU message headers and
607 * @mssg: mailbox message containing the transmit sg
608 * @rctx: crypto request context
609 * @tx_frag_num: number of scatterlist elements required to construct the
610 * SPU request message
611 * @spu_hdr_len: length in bytes of SPU message header
612 * @hash_carry_len: Number of bytes of data carried over from previous req
613 * @new_data_len: Number of bytes of new request data
614 * @pad_len: Number of pad bytes
616 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
617 * when the request completes, whether the request is handled successfully or
625 spu_ahash_tx_sg_create(struct brcm_message *mssg,
626 struct iproc_reqctx_s *rctx,
629 unsigned int hash_carry_len,
630 unsigned int new_data_len, u32 pad_len)
632 struct spu_hw *spu = &iproc_priv.spu;
633 struct scatterlist *sg; /* used to build sgs in mbox message */
634 u32 datalen; /* Number of bytes of response data expected */
637 mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),
643 sg_init_table(sg, tx_frag_num);
645 sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,
646 BCM_HDR_LEN + spu_hdr_len);
649 sg_set_buf(sg++, rctx->hash_carry, hash_carry_len);
652 /* Copy in each src sg entry from request, up to chunksize */
653 datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,
654 rctx->src_nents, new_data_len);
655 if (datalen < new_data_len) {
656 pr_err("%s(): failed to copy src sg to mbox msg",
663 sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);
665 stat_len = spu->spu_tx_status_len();
667 memset(rctx->msg_buf.tx_stat, 0, stat_len);
668 sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);
675 * handle_ahash_req() - Process an asynchronous hash request from the crypto
677 * @rctx: Crypto request context
679 * Builds a SPU request message embedded in a mailbox message and submits the
680 * mailbox message on a selected mailbox channel. The SPU request message is
681 * constructed as a scatterlist, including entries from the crypto API's
682 * src scatterlist to avoid copying the data to be hashed. This function is
683 * called either on the thread from the crypto API, or, in the case that the
684 * crypto API request is too large to fit in a single SPU request message,
685 * on the thread that invokes the receive callback with a response message.
686 * Because some operations require the response from one chunk before the next
687 * chunk can be submitted, we always wait for the response for the previous
688 * chunk before submitting the next chunk. Because requests are submitted in
689 * lock step like this, there is no need to synchronize access to request data
693 * -EINPROGRESS: request has been submitted to SPU and response will be
694 * returned asynchronously
695 * -EAGAIN: non-final request included a small amount of data, which for
696 * efficiency we did not submit to the SPU, but instead stored
697 * to be submitted to the SPU with the next part of the request
698 * other: an error code
700 static int handle_ahash_req(struct iproc_reqctx_s *rctx)
702 struct spu_hw *spu = &iproc_priv.spu;
703 struct crypto_async_request *areq = rctx->parent;
704 struct ahash_request *req = ahash_request_cast(areq);
705 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
706 struct crypto_tfm *tfm = crypto_ahash_tfm(ahash);
707 unsigned int blocksize = crypto_tfm_alg_blocksize(tfm);
708 struct iproc_ctx_s *ctx = rctx->ctx;
710 /* number of bytes still to be hashed in this req */
711 unsigned int nbytes_to_hash = 0;
713 unsigned int chunksize = 0; /* length of hash carry + new data */
715 * length of new data, not from hash carry, to be submitted in
718 unsigned int new_data_len;
720 unsigned int chunk_start = 0;
721 u32 db_size; /* Length of data field, incl gcm and hash padding */
722 int pad_len = 0; /* total pad len, including gcm, hash, stat padding */
723 u32 data_pad_len = 0; /* length of GCM/CCM padding */
724 u32 stat_pad_len = 0; /* length of padding to align STATUS word */
725 struct brcm_message *mssg; /* mailbox message */
726 struct spu_request_opts req_opts;
727 struct spu_cipher_parms cipher_parms;
728 struct spu_hash_parms hash_parms;
729 struct spu_aead_parms aead_parms;
730 unsigned int local_nbuf;
732 unsigned int digestsize;
736 * number of entries in src and dst sg. Always includes SPU msg header.
737 * rx always includes a buffer to catch digest and STATUS.
742 flow_log("total_todo %u, total_sent %u\n",
743 rctx->total_todo, rctx->total_sent);
745 memset(&req_opts, 0, sizeof(req_opts));
746 memset(&cipher_parms, 0, sizeof(cipher_parms));
747 memset(&hash_parms, 0, sizeof(hash_parms));
748 memset(&aead_parms, 0, sizeof(aead_parms));
750 req_opts.bd_suppress = true;
751 hash_parms.alg = ctx->auth.alg;
752 hash_parms.mode = ctx->auth.mode;
753 hash_parms.type = HASH_TYPE_NONE;
754 hash_parms.key_buf = (u8 *)ctx->authkey;
755 hash_parms.key_len = ctx->authkeylen;
758 * For hash algorithms below assignment looks bit odd but
759 * it's needed for AES-XCBC and AES-CMAC hash algorithms
760 * to differentiate between 128, 192, 256 bit key values.
761 * Based on the key values, hash algorithm is selected.
762 * For example for 128 bit key, hash algorithm is AES-128.
764 cipher_parms.type = ctx->cipher_type;
766 mssg = &rctx->mb_mssg;
767 chunk_start = rctx->src_sent;
770 * Compute the amount remaining to hash. This may include data
771 * carried over from previous requests.
773 nbytes_to_hash = rctx->total_todo - rctx->total_sent;
774 chunksize = nbytes_to_hash;
775 if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&
776 (chunksize > ctx->max_payload))
777 chunksize = ctx->max_payload;
780 * If this is not a final request and the request data is not a multiple
781 * of a full block, then simply park the extra data and prefix it to the
782 * data for the next request.
784 if (!rctx->is_final) {
785 u8 *dest = rctx->hash_carry + rctx->hash_carry_len;
786 u16 new_len; /* len of data to add to hash carry */
788 rem = chunksize % blocksize; /* remainder */
790 /* chunksize not a multiple of blocksize */
792 if (chunksize == 0) {
793 /* Don't have a full block to submit to hw */
794 new_len = rem - rctx->hash_carry_len;
795 sg_copy_part_to_buf(req->src, dest, new_len,
797 rctx->hash_carry_len = rem;
798 flow_log("Exiting with hash carry len: %u\n",
799 rctx->hash_carry_len);
800 packet_dump(" buf: ",
802 rctx->hash_carry_len);
808 /* if we have hash carry, then prefix it to the data in this request */
809 local_nbuf = rctx->hash_carry_len;
810 rctx->hash_carry_len = 0;
813 new_data_len = chunksize - local_nbuf;
815 /* Count number of sg entries to be used in this request */
816 rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip,
819 /* AES hashing keeps key size in type field, so need to copy it here */
820 if (hash_parms.alg == HASH_ALG_AES)
821 hash_parms.type = (enum hash_type)cipher_parms.type;
823 hash_parms.type = spu->spu_hash_type(rctx->total_sent);
825 digestsize = spu->spu_digest_size(ctx->digestsize, ctx->auth.alg,
827 hash_parms.digestsize = digestsize;
829 /* update the indexes */
830 rctx->total_sent += chunksize;
831 /* if you sent a prebuf then that wasn't from this req->src */
832 rctx->src_sent += new_data_len;
834 if ((rctx->total_sent == rctx->total_todo) && rctx->is_final)
835 hash_parms.pad_len = spu->spu_hash_pad_len(hash_parms.alg,
841 * If a non-first chunk, then include the digest returned from the
842 * previous chunk so that hw can add to it (except for AES types).
844 if ((hash_parms.type == HASH_TYPE_UPDT) &&
845 (hash_parms.alg != HASH_ALG_AES)) {
846 hash_parms.key_buf = rctx->incr_hash;
847 hash_parms.key_len = digestsize;
850 atomic64_add(chunksize, &iproc_priv.bytes_out);
852 flow_log("%s() final: %u nbuf: %u ",
853 __func__, rctx->is_final, local_nbuf);
855 if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
856 flow_log("max_payload infinite\n");
858 flow_log("max_payload %u\n", ctx->max_payload);
860 flow_log("chunk_start: %u chunk_size: %u\n", chunk_start, chunksize);
862 /* Prepend SPU header with type 3 BCM header */
863 memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);
865 hash_parms.prebuf_len = local_nbuf;
866 spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr +
868 &req_opts, &cipher_parms,
869 &hash_parms, &aead_parms,
872 if (spu_hdr_len == 0) {
873 pr_err("Failed to create SPU request header\n");
878 * Determine total length of padding required. Put all padding in one
881 data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, chunksize);
882 db_size = spu_real_db_size(0, 0, local_nbuf, new_data_len,
883 0, 0, hash_parms.pad_len);
884 if (spu->spu_tx_status_len())
885 stat_pad_len = spu->spu_wordalign_padlen(db_size);
888 pad_len = hash_parms.pad_len + data_pad_len + stat_pad_len;
891 spu->spu_request_pad(rctx->msg_buf.spu_req_pad, data_pad_len,
892 hash_parms.pad_len, ctx->auth.alg,
893 ctx->auth.mode, rctx->total_sent,
897 spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
899 packet_dump(" prebuf: ", rctx->hash_carry, local_nbuf);
901 dump_sg(rctx->src_sg, rctx->src_skip, new_data_len);
902 packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len);
905 * Build mailbox message containing SPU request msg and rx buffers
906 * to catch response message
908 memset(mssg, 0, sizeof(*mssg));
909 mssg->type = BRCM_MESSAGE_SPU;
910 mssg->ctx = rctx; /* Will be returned in response */
912 /* Create rx scatterlist to catch result */
913 err = spu_ahash_rx_sg_create(mssg, rctx, rx_frag_num, digestsize,
918 /* Create tx scatterlist containing SPU request message */
919 tx_frag_num += rctx->src_nents;
920 if (spu->spu_tx_status_len())
922 err = spu_ahash_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len,
923 local_nbuf, new_data_len, pad_len);
927 err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
928 if (unlikely(err < 0))
935 * spu_hmac_outer_hash() - Request synchonous software compute of the outer hash
936 * for an HMAC request.
937 * @req: The HMAC request from the crypto API
938 * @ctx: The session context
940 * Return: 0 if synchronous hash operation successful
941 * -EINVAL if the hash algo is unrecognized
942 * any other value indicates an error
944 static int spu_hmac_outer_hash(struct ahash_request *req,
945 struct iproc_ctx_s *ctx)
947 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
948 unsigned int blocksize =
949 crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
952 switch (ctx->auth.alg) {
954 rc = do_shash("md5", req->result, ctx->opad, blocksize,
955 req->result, ctx->digestsize, NULL, 0);
958 rc = do_shash("sha1", req->result, ctx->opad, blocksize,
959 req->result, ctx->digestsize, NULL, 0);
961 case HASH_ALG_SHA224:
962 rc = do_shash("sha224", req->result, ctx->opad, blocksize,
963 req->result, ctx->digestsize, NULL, 0);
965 case HASH_ALG_SHA256:
966 rc = do_shash("sha256", req->result, ctx->opad, blocksize,
967 req->result, ctx->digestsize, NULL, 0);
969 case HASH_ALG_SHA384:
970 rc = do_shash("sha384", req->result, ctx->opad, blocksize,
971 req->result, ctx->digestsize, NULL, 0);
973 case HASH_ALG_SHA512:
974 rc = do_shash("sha512", req->result, ctx->opad, blocksize,
975 req->result, ctx->digestsize, NULL, 0);
978 pr_err("%s() Error : unknown hmac type\n", __func__);
985 * ahash_req_done() - Process a hash result from the SPU hardware.
986 * @rctx: Crypto request context
988 * Return: 0 if successful
991 static int ahash_req_done(struct iproc_reqctx_s *rctx)
993 struct spu_hw *spu = &iproc_priv.spu;
994 struct crypto_async_request *areq = rctx->parent;
995 struct ahash_request *req = ahash_request_cast(areq);
996 struct iproc_ctx_s *ctx = rctx->ctx;
999 memcpy(req->result, rctx->msg_buf.digest, ctx->digestsize);
1001 if (spu->spu_type == SPU_TYPE_SPUM) {
1002 /* byte swap the output from the UPDT function to network byte
1005 if (ctx->auth.alg == HASH_ALG_MD5) {
1006 __swab32s((u32 *)req->result);
1007 __swab32s(((u32 *)req->result) + 1);
1008 __swab32s(((u32 *)req->result) + 2);
1009 __swab32s(((u32 *)req->result) + 3);
1010 __swab32s(((u32 *)req->result) + 4);
1014 flow_dump(" digest ", req->result, ctx->digestsize);
1016 /* if this an HMAC then do the outer hash */
1017 if (rctx->is_sw_hmac) {
1018 err = spu_hmac_outer_hash(req, ctx);
1021 flow_dump(" hmac: ", req->result, ctx->digestsize);
1024 if (rctx->is_sw_hmac || ctx->auth.mode == HASH_MODE_HMAC) {
1025 atomic_inc(&iproc_priv.op_counts[SPU_OP_HMAC]);
1026 atomic_inc(&iproc_priv.hmac_cnt[ctx->auth.alg]);
1028 atomic_inc(&iproc_priv.op_counts[SPU_OP_HASH]);
1029 atomic_inc(&iproc_priv.hash_cnt[ctx->auth.alg]);
1036 * handle_ahash_resp() - Process a SPU response message for a hash request.
1037 * Checks if the entire crypto API request has been processed, and if so,
1038 * invokes post processing on the result.
1039 * @rctx: Crypto request context
1041 static void handle_ahash_resp(struct iproc_reqctx_s *rctx)
1043 struct iproc_ctx_s *ctx = rctx->ctx;
1045 struct crypto_async_request *areq = rctx->parent;
1046 struct ahash_request *req = ahash_request_cast(areq);
1047 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1048 unsigned int blocksize =
1049 crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
1052 * Save hash to use as input to next op if incremental. Might be copying
1053 * too much, but that's easier than figuring out actual digest size here
1055 memcpy(rctx->incr_hash, rctx->msg_buf.digest, MAX_DIGEST_SIZE);
1057 flow_log("%s() blocksize:%u digestsize:%u\n",
1058 __func__, blocksize, ctx->digestsize);
1060 atomic64_add(ctx->digestsize, &iproc_priv.bytes_in);
1062 if (rctx->is_final && (rctx->total_sent == rctx->total_todo))
1063 ahash_req_done(rctx);
1067 * spu_aead_rx_sg_create() - Build up the scatterlist of buffers used to receive
1068 * a SPU response message for an AEAD request. Includes buffers to catch SPU
1069 * message headers and the response data.
1070 * @mssg: mailbox message containing the receive sg
1071 * @rctx: crypto request context
1072 * @rx_frag_num: number of scatterlist elements required to hold the
1073 * SPU response message
1074 * @assoc_len: Length of associated data included in the crypto request
1075 * @ret_iv_len: Length of IV returned in response
1076 * @resp_len: Number of bytes of response data expected to be written to
1077 * dst buffer from crypto API
1078 * @digestsize: Length of hash digest, in bytes
1079 * @stat_pad_len: Number of bytes required to pad the STAT field to
1082 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
1083 * when the request completes, whether the request is handled successfully or
1084 * there is an error.
1090 static int spu_aead_rx_sg_create(struct brcm_message *mssg,
1091 struct aead_request *req,
1092 struct iproc_reqctx_s *rctx,
1094 unsigned int assoc_len,
1095 u32 ret_iv_len, unsigned int resp_len,
1096 unsigned int digestsize, u32 stat_pad_len)
1098 struct spu_hw *spu = &iproc_priv.spu;
1099 struct scatterlist *sg; /* used to build sgs in mbox message */
1100 struct iproc_ctx_s *ctx = rctx->ctx;
1101 u32 datalen; /* Number of bytes of response data expected */
1105 if (ctx->is_rfc4543) {
1106 /* RFC4543: only pad after data, not after AAD */
1107 data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
1108 assoc_len + resp_len);
1109 assoc_buf_len = assoc_len;
1111 data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
1113 assoc_buf_len = spu->spu_assoc_resp_len(ctx->cipher.mode,
1114 assoc_len, ret_iv_len,
1118 if (ctx->cipher.mode == CIPHER_MODE_CCM)
1119 /* ICV (after data) must be in the next 32-bit word for CCM */
1120 data_padlen += spu->spu_wordalign_padlen(assoc_buf_len +
1125 /* have to catch gcm pad in separate buffer */
1128 mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),
1134 sg_init_table(sg, rx_frag_num);
1136 /* Space for SPU message header */
1137 sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);
1139 if (assoc_buf_len) {
1141 * Don't write directly to req->dst, because SPU may pad the
1142 * assoc data in the response
1144 memset(rctx->msg_buf.a.resp_aad, 0, assoc_buf_len);
1145 sg_set_buf(sg++, rctx->msg_buf.a.resp_aad, assoc_buf_len);
1150 * Copy in each dst sg entry from request, up to chunksize.
1151 * dst sg catches just the data. digest caught in separate buf.
1153 datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip,
1154 rctx->dst_nents, resp_len);
1155 if (datalen < (resp_len)) {
1156 pr_err("%s(): failed to copy dst sg to mbox msg. expected len %u, datalen %u",
1157 __func__, resp_len, datalen);
1162 /* If GCM/CCM data is padded, catch padding in separate buffer */
1164 memset(rctx->msg_buf.a.gcmpad, 0, data_padlen);
1165 sg_set_buf(sg++, rctx->msg_buf.a.gcmpad, data_padlen);
1168 /* Always catch ICV in separate buffer */
1169 sg_set_buf(sg++, rctx->msg_buf.digest, digestsize);
1171 flow_log("stat_pad_len %u\n", stat_pad_len);
1173 memset(rctx->msg_buf.rx_stat_pad, 0, stat_pad_len);
1174 sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);
1177 memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);
1178 sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());
1184 * spu_aead_tx_sg_create() - Build up the scatterlist of buffers used to send a
1185 * SPU request message for an AEAD request. Includes SPU message headers and the
1187 * @mssg: mailbox message containing the transmit sg
1188 * @rctx: crypto request context
1189 * @tx_frag_num: number of scatterlist elements required to construct the
1190 * SPU request message
1191 * @spu_hdr_len: length of SPU message header in bytes
1192 * @assoc: crypto API associated data scatterlist
1193 * @assoc_len: length of associated data
1194 * @assoc_nents: number of scatterlist entries containing assoc data
1195 * @aead_iv_len: length of AEAD IV, if included
1196 * @chunksize: Number of bytes of request data
1197 * @aad_pad_len: Number of bytes of padding at end of AAD. For GCM/CCM.
1198 * @pad_len: Number of pad bytes
1199 * @incl_icv: If true, write separate ICV buffer after data and
1202 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
1203 * when the request completes, whether the request is handled successfully or
1204 * there is an error.
1210 static int spu_aead_tx_sg_create(struct brcm_message *mssg,
1211 struct iproc_reqctx_s *rctx,
1214 struct scatterlist *assoc,
1215 unsigned int assoc_len,
1217 unsigned int aead_iv_len,
1218 unsigned int chunksize,
1219 u32 aad_pad_len, u32 pad_len, bool incl_icv)
1221 struct spu_hw *spu = &iproc_priv.spu;
1222 struct scatterlist *sg; /* used to build sgs in mbox message */
1223 struct scatterlist *assoc_sg = assoc;
1224 struct iproc_ctx_s *ctx = rctx->ctx;
1225 u32 datalen; /* Number of bytes of data to write */
1226 u32 written; /* Number of bytes of data written */
1227 u32 assoc_offset = 0;
1230 mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),
1236 sg_init_table(sg, tx_frag_num);
1238 sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,
1239 BCM_HDR_LEN + spu_hdr_len);
1242 /* Copy in each associated data sg entry from request */
1243 written = spu_msg_sg_add(&sg, &assoc_sg, &assoc_offset,
1244 assoc_nents, assoc_len);
1245 if (written < assoc_len) {
1246 pr_err("%s(): failed to copy assoc sg to mbox msg",
1253 sg_set_buf(sg++, rctx->msg_buf.iv_ctr, aead_iv_len);
1256 memset(rctx->msg_buf.a.req_aad_pad, 0, aad_pad_len);
1257 sg_set_buf(sg++, rctx->msg_buf.a.req_aad_pad, aad_pad_len);
1260 datalen = chunksize;
1261 if ((chunksize > ctx->digestsize) && incl_icv)
1262 datalen -= ctx->digestsize;
1264 /* For aead, a single msg should consume the entire src sg */
1265 written = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,
1266 rctx->src_nents, datalen);
1267 if (written < datalen) {
1268 pr_err("%s(): failed to copy src sg to mbox msg",
1275 memset(rctx->msg_buf.spu_req_pad, 0, pad_len);
1276 sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);
1280 sg_set_buf(sg++, rctx->msg_buf.digest, ctx->digestsize);
1282 stat_len = spu->spu_tx_status_len();
1284 memset(rctx->msg_buf.tx_stat, 0, stat_len);
1285 sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);
1291 * handle_aead_req() - Submit a SPU request message for the next chunk of the
1292 * current AEAD request.
1293 * @rctx: Crypto request context
1295 * Unlike other operation types, we assume the length of the request fits in
1296 * a single SPU request message. aead_enqueue() makes sure this is true.
1297 * Comments for other op types regarding threads applies here as well.
1299 * Unlike incremental hash ops, where the spu returns the entire hash for
1300 * truncated algs like sha-224, the SPU returns just the truncated hash in
1301 * response to aead requests. So digestsize is always ctx->digestsize here.
1303 * Return: -EINPROGRESS: crypto request has been accepted and result will be
1304 * returned asynchronously
1305 * Any other value indicates an error
1307 static int handle_aead_req(struct iproc_reqctx_s *rctx)
1309 struct spu_hw *spu = &iproc_priv.spu;
1310 struct crypto_async_request *areq = rctx->parent;
1311 struct aead_request *req = container_of(areq,
1312 struct aead_request, base);
1313 struct iproc_ctx_s *ctx = rctx->ctx;
1315 unsigned int chunksize;
1316 unsigned int resp_len;
1321 struct brcm_message *mssg; /* mailbox message */
1322 struct spu_request_opts req_opts;
1323 struct spu_cipher_parms cipher_parms;
1324 struct spu_hash_parms hash_parms;
1325 struct spu_aead_parms aead_parms;
1326 int assoc_nents = 0;
1327 bool incl_icv = false;
1328 unsigned int digestsize = ctx->digestsize;
1330 /* number of entries in src and dst sg. Always includes SPU msg header.
1332 u8 rx_frag_num = 2; /* and STATUS */
1335 /* doing the whole thing at once */
1336 chunksize = rctx->total_todo;
1338 flow_log("%s: chunksize %u\n", __func__, chunksize);
1340 memset(&req_opts, 0, sizeof(req_opts));
1341 memset(&hash_parms, 0, sizeof(hash_parms));
1342 memset(&aead_parms, 0, sizeof(aead_parms));
1344 req_opts.is_inbound = !(rctx->is_encrypt);
1345 req_opts.auth_first = ctx->auth_first;
1346 req_opts.is_aead = true;
1347 req_opts.is_esp = ctx->is_esp;
1349 cipher_parms.alg = ctx->cipher.alg;
1350 cipher_parms.mode = ctx->cipher.mode;
1351 cipher_parms.type = ctx->cipher_type;
1352 cipher_parms.key_buf = ctx->enckey;
1353 cipher_parms.key_len = ctx->enckeylen;
1354 cipher_parms.iv_buf = rctx->msg_buf.iv_ctr;
1355 cipher_parms.iv_len = rctx->iv_ctr_len;
1357 hash_parms.alg = ctx->auth.alg;
1358 hash_parms.mode = ctx->auth.mode;
1359 hash_parms.type = HASH_TYPE_NONE;
1360 hash_parms.key_buf = (u8 *)ctx->authkey;
1361 hash_parms.key_len = ctx->authkeylen;
1362 hash_parms.digestsize = digestsize;
1364 if ((ctx->auth.alg == HASH_ALG_SHA224) &&
1365 (ctx->authkeylen < SHA224_DIGEST_SIZE))
1366 hash_parms.key_len = SHA224_DIGEST_SIZE;
1368 aead_parms.assoc_size = req->assoclen;
1369 if (ctx->is_esp && !ctx->is_rfc4543) {
1371 * 8-byte IV is included assoc data in request. SPU2
1372 * expects AAD to include just SPI and seqno. So
1373 * subtract off the IV len.
1375 aead_parms.assoc_size -= GCM_RFC4106_IV_SIZE;
1377 if (rctx->is_encrypt) {
1378 aead_parms.return_iv = true;
1379 aead_parms.ret_iv_len = GCM_RFC4106_IV_SIZE;
1380 aead_parms.ret_iv_off = GCM_ESP_SALT_SIZE;
1383 aead_parms.ret_iv_len = 0;
1387 * Count number of sg entries from the crypto API request that are to
1388 * be included in this mailbox message. For dst sg, don't count space
1389 * for digest. Digest gets caught in a separate buffer and copied back
1390 * to dst sg when processing response.
1392 rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize);
1393 rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize);
1394 if (aead_parms.assoc_size)
1395 assoc_nents = spu_sg_count(rctx->assoc, 0,
1396 aead_parms.assoc_size);
1398 mssg = &rctx->mb_mssg;
1400 rctx->total_sent = chunksize;
1401 rctx->src_sent = chunksize;
1402 if (spu->spu_assoc_resp_len(ctx->cipher.mode,
1403 aead_parms.assoc_size,
1404 aead_parms.ret_iv_len,
1408 aead_parms.iv_len = spu->spu_aead_ivlen(ctx->cipher.mode,
1411 if (ctx->auth.alg == HASH_ALG_AES)
1412 hash_parms.type = (enum hash_type)ctx->cipher_type;
1414 /* General case AAD padding (CCM and RFC4543 special cases below) */
1415 aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
1416 aead_parms.assoc_size);
1418 /* General case data padding (CCM decrypt special case below) */
1419 aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
1422 if (ctx->cipher.mode == CIPHER_MODE_CCM) {
1424 * for CCM, AAD len + 2 (rather than AAD len) needs to be
1427 aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(
1429 aead_parms.assoc_size + 2);
1432 * And when decrypting CCM, need to pad without including
1433 * size of ICV which is tacked on to end of chunk
1435 if (!rctx->is_encrypt)
1436 aead_parms.data_pad_len =
1437 spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
1438 chunksize - digestsize);
1440 /* CCM also requires software to rewrite portions of IV: */
1441 spu->spu_ccm_update_iv(digestsize, &cipher_parms, req->assoclen,
1442 chunksize, rctx->is_encrypt,
1446 if (ctx->is_rfc4543) {
1448 * RFC4543: data is included in AAD, so don't pad after AAD
1449 * and pad data based on both AAD + data size
1451 aead_parms.aad_pad_len = 0;
1452 if (!rctx->is_encrypt)
1453 aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(
1455 aead_parms.assoc_size + chunksize -
1458 aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(
1460 aead_parms.assoc_size + chunksize);
1462 req_opts.is_rfc4543 = true;
1465 if (spu_req_incl_icv(ctx->cipher.mode, rctx->is_encrypt)) {
1468 /* Copy ICV from end of src scatterlist to digest buf */
1469 sg_copy_part_to_buf(req->src, rctx->msg_buf.digest, digestsize,
1470 req->assoclen + rctx->total_sent -
1474 atomic64_add(chunksize, &iproc_priv.bytes_out);
1476 flow_log("%s()-sent chunksize:%u\n", __func__, chunksize);
1478 /* Prepend SPU header with type 3 BCM header */
1479 memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);
1481 spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr +
1482 BCM_HDR_LEN, &req_opts,
1483 &cipher_parms, &hash_parms,
1484 &aead_parms, chunksize);
1486 /* Determine total length of padding. Put all padding in one buffer. */
1487 db_size = spu_real_db_size(aead_parms.assoc_size, aead_parms.iv_len, 0,
1488 chunksize, aead_parms.aad_pad_len,
1489 aead_parms.data_pad_len, 0);
1491 stat_pad_len = spu->spu_wordalign_padlen(db_size);
1495 pad_len = aead_parms.data_pad_len + stat_pad_len;
1498 spu->spu_request_pad(rctx->msg_buf.spu_req_pad,
1499 aead_parms.data_pad_len, 0,
1500 ctx->auth.alg, ctx->auth.mode,
1501 rctx->total_sent, stat_pad_len);
1504 spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
1506 dump_sg(rctx->assoc, 0, aead_parms.assoc_size);
1507 packet_dump(" aead iv: ", rctx->msg_buf.iv_ctr, aead_parms.iv_len);
1508 packet_log("BD:\n");
1509 dump_sg(rctx->src_sg, rctx->src_skip, chunksize);
1510 packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len);
1513 * Build mailbox message containing SPU request msg and rx buffers
1514 * to catch response message
1516 memset(mssg, 0, sizeof(*mssg));
1517 mssg->type = BRCM_MESSAGE_SPU;
1518 mssg->ctx = rctx; /* Will be returned in response */
1520 /* Create rx scatterlist to catch result */
1521 rx_frag_num += rctx->dst_nents;
1522 resp_len = chunksize;
1525 * Always catch ICV in separate buffer. Have to for GCM/CCM because of
1526 * padding. Have to for SHA-224 and other truncated SHAs because SPU
1527 * sends entire digest back.
1531 if (((ctx->cipher.mode == CIPHER_MODE_GCM) ||
1532 (ctx->cipher.mode == CIPHER_MODE_CCM)) && !rctx->is_encrypt) {
1534 * Input is ciphertxt plus ICV, but ICV not incl
1537 resp_len -= ctx->digestsize;
1539 /* no rx frags to catch output data */
1540 rx_frag_num -= rctx->dst_nents;
1543 err = spu_aead_rx_sg_create(mssg, req, rctx, rx_frag_num,
1544 aead_parms.assoc_size,
1545 aead_parms.ret_iv_len, resp_len, digestsize,
1550 /* Create tx scatterlist containing SPU request message */
1551 tx_frag_num += rctx->src_nents;
1552 tx_frag_num += assoc_nents;
1553 if (aead_parms.aad_pad_len)
1555 if (aead_parms.iv_len)
1557 if (spu->spu_tx_status_len())
1559 err = spu_aead_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len,
1560 rctx->assoc, aead_parms.assoc_size,
1561 assoc_nents, aead_parms.iv_len, chunksize,
1562 aead_parms.aad_pad_len, pad_len, incl_icv);
1566 err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
1567 if (unlikely(err < 0))
1570 return -EINPROGRESS;
1574 * handle_aead_resp() - Process a SPU response message for an AEAD request.
1575 * @rctx: Crypto request context
1577 static void handle_aead_resp(struct iproc_reqctx_s *rctx)
1579 struct spu_hw *spu = &iproc_priv.spu;
1580 struct crypto_async_request *areq = rctx->parent;
1581 struct aead_request *req = container_of(areq,
1582 struct aead_request, base);
1583 struct iproc_ctx_s *ctx = rctx->ctx;
1585 unsigned int icv_offset;
1588 /* See how much data was returned */
1589 payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr);
1590 flow_log("payload_len %u\n", payload_len);
1592 /* only count payload */
1593 atomic64_add(payload_len, &iproc_priv.bytes_in);
1596 packet_dump(" assoc_data ", rctx->msg_buf.a.resp_aad,
1600 * Copy the ICV back to the destination
1601 * buffer. In decrypt case, SPU gives us back the digest, but crypto
1602 * API doesn't expect ICV in dst buffer.
1604 result_len = req->cryptlen;
1605 if (rctx->is_encrypt) {
1606 icv_offset = req->assoclen + rctx->total_sent;
1607 packet_dump(" ICV: ", rctx->msg_buf.digest, ctx->digestsize);
1608 flow_log("copying ICV to dst sg at offset %u\n", icv_offset);
1609 sg_copy_part_from_buf(req->dst, rctx->msg_buf.digest,
1610 ctx->digestsize, icv_offset);
1611 result_len += ctx->digestsize;
1614 packet_log("response data: ");
1615 dump_sg(req->dst, req->assoclen, result_len);
1617 atomic_inc(&iproc_priv.op_counts[SPU_OP_AEAD]);
1618 if (ctx->cipher.alg == CIPHER_ALG_AES) {
1619 if (ctx->cipher.mode == CIPHER_MODE_CCM)
1620 atomic_inc(&iproc_priv.aead_cnt[AES_CCM]);
1621 else if (ctx->cipher.mode == CIPHER_MODE_GCM)
1622 atomic_inc(&iproc_priv.aead_cnt[AES_GCM]);
1624 atomic_inc(&iproc_priv.aead_cnt[AUTHENC]);
1626 atomic_inc(&iproc_priv.aead_cnt[AUTHENC]);
1631 * spu_chunk_cleanup() - Do cleanup after processing one chunk of a request
1632 * @rctx: request context
1634 * Mailbox scatterlists are allocated for each chunk. So free them after
1635 * processing each chunk.
1637 static void spu_chunk_cleanup(struct iproc_reqctx_s *rctx)
1639 /* mailbox message used to tx request */
1640 struct brcm_message *mssg = &rctx->mb_mssg;
1642 kfree(mssg->spu.src);
1643 kfree(mssg->spu.dst);
1644 memset(mssg, 0, sizeof(struct brcm_message));
1648 * finish_req() - Used to invoke the complete callback from the requester when
1649 * a request has been handled asynchronously.
1650 * @rctx: Request context
1651 * @err: Indicates whether the request was successful or not
1653 * Ensures that cleanup has been done for request
1655 static void finish_req(struct iproc_reqctx_s *rctx, int err)
1657 struct crypto_async_request *areq = rctx->parent;
1659 flow_log("%s() err:%d\n\n", __func__, err);
1661 /* No harm done if already called */
1662 spu_chunk_cleanup(rctx);
1665 areq->complete(areq, err);
1669 * spu_rx_callback() - Callback from mailbox framework with a SPU response.
1670 * @cl: mailbox client structure for SPU driver
1671 * @msg: mailbox message containing SPU response
1673 static void spu_rx_callback(struct mbox_client *cl, void *msg)
1675 struct spu_hw *spu = &iproc_priv.spu;
1676 struct brcm_message *mssg = msg;
1677 struct iproc_reqctx_s *rctx;
1678 struct iproc_ctx_s *ctx;
1679 struct crypto_async_request *areq;
1683 if (unlikely(!rctx)) {
1685 pr_err("%s(): no request context", __func__);
1689 areq = rctx->parent;
1692 /* process the SPU status */
1693 err = spu->spu_status_process(rctx->msg_buf.rx_stat);
1695 if (err == SPU_INVALID_ICV)
1696 atomic_inc(&iproc_priv.bad_icv);
1701 /* Process the SPU response message */
1702 switch (rctx->ctx->alg->type) {
1703 case CRYPTO_ALG_TYPE_ABLKCIPHER:
1704 handle_ablkcipher_resp(rctx);
1706 case CRYPTO_ALG_TYPE_AHASH:
1707 handle_ahash_resp(rctx);
1709 case CRYPTO_ALG_TYPE_AEAD:
1710 handle_aead_resp(rctx);
1718 * If this response does not complete the request, then send the next
1721 if (rctx->total_sent < rctx->total_todo) {
1722 /* Deallocate anything specific to previous chunk */
1723 spu_chunk_cleanup(rctx);
1725 switch (rctx->ctx->alg->type) {
1726 case CRYPTO_ALG_TYPE_ABLKCIPHER:
1727 err = handle_ablkcipher_req(rctx);
1729 case CRYPTO_ALG_TYPE_AHASH:
1730 err = handle_ahash_req(rctx);
1733 * we saved data in hash carry, but tell crypto
1734 * API we successfully completed request.
1738 case CRYPTO_ALG_TYPE_AEAD:
1739 err = handle_aead_req(rctx);
1745 if (err == -EINPROGRESS)
1746 /* Successfully submitted request for next chunk */
1751 finish_req(rctx, err);
1754 /* ==================== Kernel Cryptographic API ==================== */
1757 * ablkcipher_enqueue() - Handle ablkcipher encrypt or decrypt request.
1758 * @req: Crypto API request
1759 * @encrypt: true if encrypting; false if decrypting
1761 * Return: -EINPROGRESS if request accepted and result will be returned
1765 static int ablkcipher_enqueue(struct ablkcipher_request *req, bool encrypt)
1767 struct iproc_reqctx_s *rctx = ablkcipher_request_ctx(req);
1768 struct iproc_ctx_s *ctx =
1769 crypto_ablkcipher_ctx(crypto_ablkcipher_reqtfm(req));
1772 flow_log("%s() enc:%u\n", __func__, encrypt);
1774 rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
1775 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
1776 rctx->parent = &req->base;
1777 rctx->is_encrypt = encrypt;
1778 rctx->bd_suppress = false;
1779 rctx->total_todo = req->nbytes;
1781 rctx->total_sent = 0;
1782 rctx->total_received = 0;
1785 /* Initialize current position in src and dst scatterlists */
1786 rctx->src_sg = req->src;
1787 rctx->src_nents = 0;
1789 rctx->dst_sg = req->dst;
1790 rctx->dst_nents = 0;
1793 if (ctx->cipher.mode == CIPHER_MODE_CBC ||
1794 ctx->cipher.mode == CIPHER_MODE_CTR ||
1795 ctx->cipher.mode == CIPHER_MODE_OFB ||
1796 ctx->cipher.mode == CIPHER_MODE_XTS ||
1797 ctx->cipher.mode == CIPHER_MODE_GCM ||
1798 ctx->cipher.mode == CIPHER_MODE_CCM) {
1800 crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(req));
1801 memcpy(rctx->msg_buf.iv_ctr, req->info, rctx->iv_ctr_len);
1803 rctx->iv_ctr_len = 0;
1806 /* Choose a SPU to process this request */
1807 rctx->chan_idx = select_channel();
1808 err = handle_ablkcipher_req(rctx);
1809 if (err != -EINPROGRESS)
1810 /* synchronous result */
1811 spu_chunk_cleanup(rctx);
1816 static int des_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
1817 unsigned int keylen)
1819 struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher);
1820 u32 tmp[DES_EXPKEY_WORDS];
1822 if (keylen == DES_KEY_SIZE) {
1823 if (des_ekey(tmp, key) == 0) {
1824 if (crypto_ablkcipher_get_flags(cipher) &
1825 CRYPTO_TFM_REQ_WEAK_KEY) {
1826 u32 flags = CRYPTO_TFM_RES_WEAK_KEY;
1828 crypto_ablkcipher_set_flags(cipher, flags);
1833 ctx->cipher_type = CIPHER_TYPE_DES;
1835 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
1841 static int threedes_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
1842 unsigned int keylen)
1844 struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher);
1846 if (keylen == (DES_KEY_SIZE * 3)) {
1847 const u32 *K = (const u32 *)key;
1848 u32 flags = CRYPTO_TFM_RES_BAD_KEY_SCHED;
1850 if (!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
1851 !((K[2] ^ K[4]) | (K[3] ^ K[5]))) {
1852 crypto_ablkcipher_set_flags(cipher, flags);
1856 ctx->cipher_type = CIPHER_TYPE_3DES;
1858 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
1864 static int aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
1865 unsigned int keylen)
1867 struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher);
1869 if (ctx->cipher.mode == CIPHER_MODE_XTS)
1870 /* XTS includes two keys of equal length */
1871 keylen = keylen / 2;
1874 case AES_KEYSIZE_128:
1875 ctx->cipher_type = CIPHER_TYPE_AES128;
1877 case AES_KEYSIZE_192:
1878 ctx->cipher_type = CIPHER_TYPE_AES192;
1880 case AES_KEYSIZE_256:
1881 ctx->cipher_type = CIPHER_TYPE_AES256;
1884 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
1887 WARN_ON((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&
1888 ((ctx->max_payload % AES_BLOCK_SIZE) != 0));
1892 static int rc4_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
1893 unsigned int keylen)
1895 struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher);
1898 ctx->enckeylen = ARC4_MAX_KEY_SIZE + ARC4_STATE_SIZE;
1900 ctx->enckey[0] = 0x00; /* 0x00 */
1901 ctx->enckey[1] = 0x00; /* i */
1902 ctx->enckey[2] = 0x00; /* 0x00 */
1903 ctx->enckey[3] = 0x00; /* j */
1904 for (i = 0; i < ARC4_MAX_KEY_SIZE; i++)
1905 ctx->enckey[i + ARC4_STATE_SIZE] = key[i % keylen];
1907 ctx->cipher_type = CIPHER_TYPE_INIT;
1912 static int ablkcipher_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
1913 unsigned int keylen)
1915 struct spu_hw *spu = &iproc_priv.spu;
1916 struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher);
1917 struct spu_cipher_parms cipher_parms;
1921 flow_log("ablkcipher_setkey() keylen: %d\n", keylen);
1922 flow_dump(" key: ", key, keylen);
1924 switch (ctx->cipher.alg) {
1925 case CIPHER_ALG_DES:
1926 err = des_setkey(cipher, key, keylen);
1928 case CIPHER_ALG_3DES:
1929 err = threedes_setkey(cipher, key, keylen);
1931 case CIPHER_ALG_AES:
1932 err = aes_setkey(cipher, key, keylen);
1934 case CIPHER_ALG_RC4:
1935 err = rc4_setkey(cipher, key, keylen);
1938 pr_err("%s() Error: unknown cipher alg\n", __func__);
1944 /* RC4 already populated ctx->enkey */
1945 if (ctx->cipher.alg != CIPHER_ALG_RC4) {
1946 memcpy(ctx->enckey, key, keylen);
1947 ctx->enckeylen = keylen;
1949 /* SPU needs XTS keys in the reverse order the crypto API presents */
1950 if ((ctx->cipher.alg == CIPHER_ALG_AES) &&
1951 (ctx->cipher.mode == CIPHER_MODE_XTS)) {
1952 unsigned int xts_keylen = keylen / 2;
1954 memcpy(ctx->enckey, key + xts_keylen, xts_keylen);
1955 memcpy(ctx->enckey + xts_keylen, key, xts_keylen);
1958 if (spu->spu_type == SPU_TYPE_SPUM)
1959 alloc_len = BCM_HDR_LEN + SPU_HEADER_ALLOC_LEN;
1960 else if (spu->spu_type == SPU_TYPE_SPU2)
1961 alloc_len = BCM_HDR_LEN + SPU2_HEADER_ALLOC_LEN;
1962 memset(ctx->bcm_spu_req_hdr, 0, alloc_len);
1963 cipher_parms.iv_buf = NULL;
1964 cipher_parms.iv_len = crypto_ablkcipher_ivsize(cipher);
1965 flow_log("%s: iv_len %u\n", __func__, cipher_parms.iv_len);
1967 cipher_parms.alg = ctx->cipher.alg;
1968 cipher_parms.mode = ctx->cipher.mode;
1969 cipher_parms.type = ctx->cipher_type;
1970 cipher_parms.key_buf = ctx->enckey;
1971 cipher_parms.key_len = ctx->enckeylen;
1973 /* Prepend SPU request message with BCM header */
1974 memcpy(ctx->bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);
1975 ctx->spu_req_hdr_len =
1976 spu->spu_cipher_req_init(ctx->bcm_spu_req_hdr + BCM_HDR_LEN,
1979 ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,
1983 atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_CIPHER]);
1988 static int ablkcipher_encrypt(struct ablkcipher_request *req)
1990 flow_log("ablkcipher_encrypt() nbytes:%u\n", req->nbytes);
1992 return ablkcipher_enqueue(req, true);
1995 static int ablkcipher_decrypt(struct ablkcipher_request *req)
1997 flow_log("ablkcipher_decrypt() nbytes:%u\n", req->nbytes);
1998 return ablkcipher_enqueue(req, false);
2001 static int ahash_enqueue(struct ahash_request *req)
2003 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
2004 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2005 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
2007 const char *alg_name;
2009 flow_log("ahash_enqueue() nbytes:%u\n", req->nbytes);
2011 rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
2012 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
2013 rctx->parent = &req->base;
2015 rctx->bd_suppress = true;
2016 memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message));
2018 /* Initialize position in src scatterlist */
2019 rctx->src_sg = req->src;
2021 rctx->src_nents = 0;
2022 rctx->dst_sg = NULL;
2024 rctx->dst_nents = 0;
2026 /* SPU2 hardware does not compute hash of zero length data */
2027 if ((rctx->is_final == 1) && (rctx->total_todo == 0) &&
2028 (iproc_priv.spu.spu_type == SPU_TYPE_SPU2)) {
2029 alg_name = crypto_tfm_alg_name(crypto_ahash_tfm(tfm));
2030 flow_log("Doing %sfinal %s zero-len hash request in software\n",
2031 rctx->is_final ? "" : "non-", alg_name);
2032 err = do_shash((unsigned char *)alg_name, req->result,
2033 NULL, 0, NULL, 0, ctx->authkey,
2036 flow_log("Hash request failed with error %d\n", err);
2039 /* Choose a SPU to process this request */
2040 rctx->chan_idx = select_channel();
2042 err = handle_ahash_req(rctx);
2043 if (err != -EINPROGRESS)
2044 /* synchronous result */
2045 spu_chunk_cleanup(rctx);
2049 * we saved data in hash carry, but tell crypto API
2050 * we successfully completed request.
2057 static int __ahash_init(struct ahash_request *req)
2059 struct spu_hw *spu = &iproc_priv.spu;
2060 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
2061 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2062 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
2064 flow_log("%s()\n", __func__);
2066 /* Initialize the context */
2067 rctx->hash_carry_len = 0;
2070 rctx->total_todo = 0;
2072 rctx->total_sent = 0;
2073 rctx->total_received = 0;
2075 ctx->digestsize = crypto_ahash_digestsize(tfm);
2076 /* If we add a hash whose digest is larger, catch it here. */
2077 WARN_ON(ctx->digestsize > MAX_DIGEST_SIZE);
2079 rctx->is_sw_hmac = false;
2081 ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, 0,
2088 * spu_no_incr_hash() - Determine whether incremental hashing is supported.
2089 * @ctx: Crypto session context
2091 * SPU-2 does not support incremental hashing (we'll have to revisit and
2092 * condition based on chip revision or device tree entry if future versions do
2093 * support incremental hash)
2095 * SPU-M also doesn't support incremental hashing of AES-XCBC
2097 * Return: true if incremental hashing is not supported
2100 bool spu_no_incr_hash(struct iproc_ctx_s *ctx)
2102 struct spu_hw *spu = &iproc_priv.spu;
2104 if (spu->spu_type == SPU_TYPE_SPU2)
2107 if ((ctx->auth.alg == HASH_ALG_AES) &&
2108 (ctx->auth.mode == HASH_MODE_XCBC))
2111 /* Otherwise, incremental hashing is supported */
2115 static int ahash_init(struct ahash_request *req)
2117 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2118 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
2119 const char *alg_name;
2120 struct crypto_shash *hash;
2124 if (spu_no_incr_hash(ctx)) {
2126 * If we get an incremental hashing request and it's not
2127 * supported by the hardware, we need to handle it in software
2128 * by calling synchronous hash functions.
2130 alg_name = crypto_tfm_alg_name(crypto_ahash_tfm(tfm));
2131 hash = crypto_alloc_shash(alg_name, 0, 0);
2133 ret = PTR_ERR(hash);
2137 gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
2138 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
2139 ctx->shash = kmalloc(sizeof(*ctx->shash) +
2140 crypto_shash_descsize(hash), gfp);
2145 ctx->shash->tfm = hash;
2146 ctx->shash->flags = 0;
2148 /* Set the key using data we already have from setkey */
2149 if (ctx->authkeylen > 0) {
2150 ret = crypto_shash_setkey(hash, ctx->authkey,
2156 /* Initialize hash w/ this key and other params */
2157 ret = crypto_shash_init(ctx->shash);
2161 /* Otherwise call the internal function which uses SPU hw */
2162 ret = __ahash_init(req);
2170 crypto_free_shash(hash);
2175 static int __ahash_update(struct ahash_request *req)
2177 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
2179 flow_log("ahash_update() nbytes:%u\n", req->nbytes);
2183 rctx->total_todo += req->nbytes;
2186 return ahash_enqueue(req);
2189 static int ahash_update(struct ahash_request *req)
2191 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2192 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
2198 if (spu_no_incr_hash(ctx)) {
2200 * If we get an incremental hashing request and it's not
2201 * supported by the hardware, we need to handle it in software
2202 * by calling synchronous hash functions.
2205 nents = sg_nents(req->src);
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);
2216 if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) !=
2222 /* Call synchronous update */
2223 ret = crypto_shash_update(ctx->shash, tmpbuf, req->nbytes);
2226 /* Otherwise call the internal function which uses SPU hw */
2227 ret = __ahash_update(req);
2233 static int __ahash_final(struct ahash_request *req)
2235 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
2237 flow_log("ahash_final() nbytes:%u\n", req->nbytes);
2241 return ahash_enqueue(req);
2244 static int ahash_final(struct ahash_request *req)
2246 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2247 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
2250 if (spu_no_incr_hash(ctx)) {
2252 * If we get an incremental hashing request and it's not
2253 * supported by the hardware, we need to handle it in software
2254 * by calling synchronous hash functions.
2256 ret = crypto_shash_final(ctx->shash, req->result);
2258 /* Done with hash, can deallocate it now */
2259 crypto_free_shash(ctx->shash->tfm);
2263 /* Otherwise call the internal function which uses SPU hw */
2264 ret = __ahash_final(req);
2270 static int __ahash_finup(struct ahash_request *req)
2272 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
2274 flow_log("ahash_finup() nbytes:%u\n", req->nbytes);
2276 rctx->total_todo += req->nbytes;
2280 return ahash_enqueue(req);
2283 static int ahash_finup(struct ahash_request *req)
2285 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2286 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
2292 if (spu_no_incr_hash(ctx)) {
2294 * If we get an incremental hashing request and it's not
2295 * supported by the hardware, we need to handle it in software
2296 * by calling synchronous hash functions.
2299 nents = sg_nents(req->src);
2302 goto ahash_finup_exit;
2305 /* Copy data from req scatterlist to tmp buffer */
2306 gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
2307 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
2308 tmpbuf = kmalloc(req->nbytes, gfp);
2311 goto ahash_finup_exit;
2314 if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) !=
2317 goto ahash_finup_free;
2320 /* Call synchronous update */
2321 ret = crypto_shash_finup(ctx->shash, tmpbuf, req->nbytes,
2324 /* Otherwise call the internal function which uses SPU hw */
2325 return __ahash_finup(req);
2331 /* Done with hash, can deallocate it now */
2332 crypto_free_shash(ctx->shash->tfm);
2337 static int ahash_digest(struct ahash_request *req)
2341 flow_log("ahash_digest() nbytes:%u\n", req->nbytes);
2343 /* whole thing at once */
2344 err = __ahash_init(req);
2346 err = __ahash_finup(req);
2351 static int ahash_setkey(struct crypto_ahash *ahash, const u8 *key,
2352 unsigned int keylen)
2354 struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash);
2356 flow_log("%s() ahash:%p key:%p keylen:%u\n",
2357 __func__, ahash, key, keylen);
2358 flow_dump(" key: ", key, keylen);
2360 if (ctx->auth.alg == HASH_ALG_AES) {
2362 case AES_KEYSIZE_128:
2363 ctx->cipher_type = CIPHER_TYPE_AES128;
2365 case AES_KEYSIZE_192:
2366 ctx->cipher_type = CIPHER_TYPE_AES192;
2368 case AES_KEYSIZE_256:
2369 ctx->cipher_type = CIPHER_TYPE_AES256;
2372 pr_err("%s() Error: Invalid key length\n", __func__);
2376 pr_err("%s() Error: unknown hash alg\n", __func__);
2379 memcpy(ctx->authkey, key, keylen);
2380 ctx->authkeylen = keylen;
2385 static int ahash_export(struct ahash_request *req, void *out)
2387 const struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
2388 struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)out;
2390 spu_exp->total_todo = rctx->total_todo;
2391 spu_exp->total_sent = rctx->total_sent;
2392 spu_exp->is_sw_hmac = rctx->is_sw_hmac;
2393 memcpy(spu_exp->hash_carry, rctx->hash_carry, sizeof(rctx->hash_carry));
2394 spu_exp->hash_carry_len = rctx->hash_carry_len;
2395 memcpy(spu_exp->incr_hash, rctx->incr_hash, sizeof(rctx->incr_hash));
2400 static int ahash_import(struct ahash_request *req, const void *in)
2402 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
2403 struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)in;
2405 rctx->total_todo = spu_exp->total_todo;
2406 rctx->total_sent = spu_exp->total_sent;
2407 rctx->is_sw_hmac = spu_exp->is_sw_hmac;
2408 memcpy(rctx->hash_carry, spu_exp->hash_carry, sizeof(rctx->hash_carry));
2409 rctx->hash_carry_len = spu_exp->hash_carry_len;
2410 memcpy(rctx->incr_hash, spu_exp->incr_hash, sizeof(rctx->incr_hash));
2415 static int ahash_hmac_setkey(struct crypto_ahash *ahash, const u8 *key,
2416 unsigned int keylen)
2418 struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash);
2419 unsigned int blocksize =
2420 crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
2421 unsigned int digestsize = crypto_ahash_digestsize(ahash);
2425 flow_log("%s() ahash:%p key:%p keylen:%u blksz:%u digestsz:%u\n",
2426 __func__, ahash, key, keylen, blocksize, digestsize);
2427 flow_dump(" key: ", key, keylen);
2429 if (keylen > blocksize) {
2430 switch (ctx->auth.alg) {
2432 rc = do_shash("md5", ctx->authkey, key, keylen, NULL,
2436 rc = do_shash("sha1", ctx->authkey, key, keylen, NULL,
2439 case HASH_ALG_SHA224:
2440 rc = do_shash("sha224", ctx->authkey, key, keylen, NULL,
2443 case HASH_ALG_SHA256:
2444 rc = do_shash("sha256", ctx->authkey, key, keylen, NULL,
2447 case HASH_ALG_SHA384:
2448 rc = do_shash("sha384", ctx->authkey, key, keylen, NULL,
2451 case HASH_ALG_SHA512:
2452 rc = do_shash("sha512", ctx->authkey, key, keylen, NULL,
2455 case HASH_ALG_SHA3_224:
2456 rc = do_shash("sha3-224", ctx->authkey, key, keylen,
2459 case HASH_ALG_SHA3_256:
2460 rc = do_shash("sha3-256", ctx->authkey, key, keylen,
2463 case HASH_ALG_SHA3_384:
2464 rc = do_shash("sha3-384", ctx->authkey, key, keylen,
2467 case HASH_ALG_SHA3_512:
2468 rc = do_shash("sha3-512", ctx->authkey, key, keylen,
2472 pr_err("%s() Error: unknown hash alg\n", __func__);
2476 pr_err("%s() Error %d computing shash for %s\n",
2477 __func__, rc, hash_alg_name[ctx->auth.alg]);
2480 ctx->authkeylen = digestsize;
2482 flow_log(" keylen > digestsize... hashed\n");
2483 flow_dump(" newkey: ", ctx->authkey, ctx->authkeylen);
2485 memcpy(ctx->authkey, key, keylen);
2486 ctx->authkeylen = keylen;
2490 * Full HMAC operation in SPUM is not verified,
2491 * So keeping the generation of IPAD, OPAD and
2492 * outer hashing in software.
2494 if (iproc_priv.spu.spu_type == SPU_TYPE_SPUM) {
2495 memcpy(ctx->ipad, ctx->authkey, ctx->authkeylen);
2496 memset(ctx->ipad + ctx->authkeylen, 0,
2497 blocksize - ctx->authkeylen);
2498 ctx->authkeylen = 0;
2499 memcpy(ctx->opad, ctx->ipad, blocksize);
2501 for (index = 0; index < blocksize; index++) {
2502 ctx->ipad[index] ^= HMAC_IPAD_VALUE;
2503 ctx->opad[index] ^= HMAC_OPAD_VALUE;
2506 flow_dump(" ipad: ", ctx->ipad, blocksize);
2507 flow_dump(" opad: ", ctx->opad, blocksize);
2509 ctx->digestsize = digestsize;
2510 atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_HMAC]);
2515 static int ahash_hmac_init(struct ahash_request *req)
2517 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
2518 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2519 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
2520 unsigned int blocksize =
2521 crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
2523 flow_log("ahash_hmac_init()\n");
2525 /* init the context as a hash */
2528 if (!spu_no_incr_hash(ctx)) {
2529 /* SPU-M can do incr hashing but needs sw for outer HMAC */
2530 rctx->is_sw_hmac = true;
2531 ctx->auth.mode = HASH_MODE_HASH;
2532 /* start with a prepended ipad */
2533 memcpy(rctx->hash_carry, ctx->ipad, blocksize);
2534 rctx->hash_carry_len = blocksize;
2535 rctx->total_todo += blocksize;
2541 static int ahash_hmac_update(struct ahash_request *req)
2543 flow_log("ahash_hmac_update() nbytes:%u\n", req->nbytes);
2548 return ahash_update(req);
2551 static int ahash_hmac_final(struct ahash_request *req)
2553 flow_log("ahash_hmac_final() nbytes:%u\n", req->nbytes);
2555 return ahash_final(req);
2558 static int ahash_hmac_finup(struct ahash_request *req)
2560 flow_log("ahash_hmac_finupl() nbytes:%u\n", req->nbytes);
2562 return ahash_finup(req);
2565 static int ahash_hmac_digest(struct ahash_request *req)
2567 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
2568 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2569 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
2570 unsigned int blocksize =
2571 crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
2573 flow_log("ahash_hmac_digest() nbytes:%u\n", req->nbytes);
2575 /* Perform initialization and then call finup */
2578 if (iproc_priv.spu.spu_type == SPU_TYPE_SPU2) {
2580 * SPU2 supports full HMAC implementation in the
2581 * hardware, need not to generate IPAD, OPAD and
2582 * outer hash in software.
2583 * Only for hash key len > hash block size, SPU2
2584 * expects to perform hashing on the key, shorten
2585 * it to digest size and feed it as hash key.
2587 rctx->is_sw_hmac = false;
2588 ctx->auth.mode = HASH_MODE_HMAC;
2590 rctx->is_sw_hmac = true;
2591 ctx->auth.mode = HASH_MODE_HASH;
2592 /* start with a prepended ipad */
2593 memcpy(rctx->hash_carry, ctx->ipad, blocksize);
2594 rctx->hash_carry_len = blocksize;
2595 rctx->total_todo += blocksize;
2598 return __ahash_finup(req);
2603 static int aead_need_fallback(struct aead_request *req)
2605 struct iproc_reqctx_s *rctx = aead_request_ctx(req);
2606 struct spu_hw *spu = &iproc_priv.spu;
2607 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2608 struct iproc_ctx_s *ctx = crypto_aead_ctx(aead);
2612 * SPU hardware cannot handle the AES-GCM/CCM case where plaintext
2613 * and AAD are both 0 bytes long. So use fallback in this case.
2615 if (((ctx->cipher.mode == CIPHER_MODE_GCM) ||
2616 (ctx->cipher.mode == CIPHER_MODE_CCM)) &&
2617 (req->assoclen == 0)) {
2618 if ((rctx->is_encrypt && (req->cryptlen == 0)) ||
2619 (!rctx->is_encrypt && (req->cryptlen == ctx->digestsize))) {
2620 flow_log("AES GCM/CCM needs fallback for 0 len req\n");
2625 /* SPU-M hardware only supports CCM digest size of 8, 12, or 16 bytes */
2626 if ((ctx->cipher.mode == CIPHER_MODE_CCM) &&
2627 (spu->spu_type == SPU_TYPE_SPUM) &&
2628 (ctx->digestsize != 8) && (ctx->digestsize != 12) &&
2629 (ctx->digestsize != 16)) {
2630 flow_log("%s() AES CCM needs fallback for digest size %d\n",
2631 __func__, ctx->digestsize);
2636 * SPU-M on NSP has an issue where AES-CCM hash is not correct
2637 * when AAD size is 0
2639 if ((ctx->cipher.mode == CIPHER_MODE_CCM) &&
2640 (spu->spu_subtype == SPU_SUBTYPE_SPUM_NSP) &&
2641 (req->assoclen == 0)) {
2642 flow_log("%s() AES_CCM needs fallback for 0 len AAD on NSP\n",
2647 payload_len = req->cryptlen;
2648 if (spu->spu_type == SPU_TYPE_SPUM)
2649 payload_len += req->assoclen;
2651 flow_log("%s() payload len: %u\n", __func__, payload_len);
2653 if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
2656 return payload_len > ctx->max_payload;
2659 static void aead_complete(struct crypto_async_request *areq, int err)
2661 struct aead_request *req =
2662 container_of(areq, struct aead_request, base);
2663 struct iproc_reqctx_s *rctx = aead_request_ctx(req);
2664 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2666 flow_log("%s() err:%d\n", __func__, err);
2668 areq->tfm = crypto_aead_tfm(aead);
2670 areq->complete = rctx->old_complete;
2671 areq->data = rctx->old_data;
2673 areq->complete(areq, err);
2676 static int aead_do_fallback(struct aead_request *req, bool is_encrypt)
2678 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2679 struct crypto_tfm *tfm = crypto_aead_tfm(aead);
2680 struct iproc_reqctx_s *rctx = aead_request_ctx(req);
2681 struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
2685 flow_log("%s() enc:%u\n", __func__, is_encrypt);
2687 if (ctx->fallback_cipher) {
2688 /* Store the cipher tfm and then use the fallback tfm */
2689 rctx->old_tfm = tfm;
2690 aead_request_set_tfm(req, ctx->fallback_cipher);
2692 * Save the callback and chain ourselves in, so we can restore
2695 rctx->old_complete = req->base.complete;
2696 rctx->old_data = req->base.data;
2697 req_flags = aead_request_flags(req);
2698 aead_request_set_callback(req, req_flags, aead_complete, req);
2699 err = is_encrypt ? crypto_aead_encrypt(req) :
2700 crypto_aead_decrypt(req);
2704 * fallback was synchronous (did not return
2705 * -EINPROGRESS). So restore request state here.
2707 aead_request_set_callback(req, req_flags,
2708 rctx->old_complete, req);
2709 req->base.data = rctx->old_data;
2710 aead_request_set_tfm(req, aead);
2711 flow_log("%s() fallback completed successfully\n\n",
2721 static int aead_enqueue(struct aead_request *req, bool is_encrypt)
2723 struct iproc_reqctx_s *rctx = aead_request_ctx(req);
2724 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2725 struct iproc_ctx_s *ctx = crypto_aead_ctx(aead);
2728 flow_log("%s() enc:%u\n", __func__, is_encrypt);
2730 if (req->assoclen > MAX_ASSOC_SIZE) {
2732 ("%s() Error: associated data too long. (%u > %u bytes)\n",
2733 __func__, req->assoclen, MAX_ASSOC_SIZE);
2737 rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
2738 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
2739 rctx->parent = &req->base;
2740 rctx->is_encrypt = is_encrypt;
2741 rctx->bd_suppress = false;
2742 rctx->total_todo = req->cryptlen;
2744 rctx->total_sent = 0;
2745 rctx->total_received = 0;
2746 rctx->is_sw_hmac = false;
2748 memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message));
2750 /* assoc data is at start of src sg */
2751 rctx->assoc = req->src;
2754 * Init current position in src scatterlist to be after assoc data.
2755 * src_skip set to buffer offset where data begins. (Assoc data could
2756 * end in the middle of a buffer.)
2758 if (spu_sg_at_offset(req->src, req->assoclen, &rctx->src_sg,
2759 &rctx->src_skip) < 0) {
2760 pr_err("%s() Error: Unable to find start of src data\n",
2765 rctx->src_nents = 0;
2766 rctx->dst_nents = 0;
2767 if (req->dst == req->src) {
2768 rctx->dst_sg = rctx->src_sg;
2769 rctx->dst_skip = rctx->src_skip;
2772 * Expect req->dst to have room for assoc data followed by
2773 * output data and ICV, if encrypt. So initialize dst_sg
2774 * to point beyond assoc len offset.
2776 if (spu_sg_at_offset(req->dst, req->assoclen, &rctx->dst_sg,
2777 &rctx->dst_skip) < 0) {
2778 pr_err("%s() Error: Unable to find start of dst data\n",
2784 if (ctx->cipher.mode == CIPHER_MODE_CBC ||
2785 ctx->cipher.mode == CIPHER_MODE_CTR ||
2786 ctx->cipher.mode == CIPHER_MODE_OFB ||
2787 ctx->cipher.mode == CIPHER_MODE_XTS ||
2788 ctx->cipher.mode == CIPHER_MODE_GCM) {
2791 crypto_aead_ivsize(crypto_aead_reqtfm(req));
2792 } else if (ctx->cipher.mode == CIPHER_MODE_CCM) {
2793 rctx->iv_ctr_len = CCM_AES_IV_SIZE;
2795 rctx->iv_ctr_len = 0;
2798 rctx->hash_carry_len = 0;
2800 flow_log(" src sg: %p\n", req->src);
2801 flow_log(" rctx->src_sg: %p, src_skip %u\n",
2802 rctx->src_sg, rctx->src_skip);
2803 flow_log(" assoc: %p, assoclen %u\n", rctx->assoc, req->assoclen);
2804 flow_log(" dst sg: %p\n", req->dst);
2805 flow_log(" rctx->dst_sg: %p, dst_skip %u\n",
2806 rctx->dst_sg, rctx->dst_skip);
2807 flow_log(" iv_ctr_len:%u\n", rctx->iv_ctr_len);
2808 flow_dump(" iv: ", req->iv, rctx->iv_ctr_len);
2809 flow_log(" authkeylen:%u\n", ctx->authkeylen);
2810 flow_log(" is_esp: %s\n", ctx->is_esp ? "yes" : "no");
2812 if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
2813 flow_log(" max_payload infinite");
2815 flow_log(" max_payload: %u\n", ctx->max_payload);
2817 if (unlikely(aead_need_fallback(req)))
2818 return aead_do_fallback(req, is_encrypt);
2821 * Do memory allocations for request after fallback check, because if we
2822 * do fallback, we won't call finish_req() to dealloc.
2824 if (rctx->iv_ctr_len) {
2826 memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset,
2827 ctx->salt, ctx->salt_len);
2828 memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset + ctx->salt_len,
2830 rctx->iv_ctr_len - ctx->salt_len - ctx->salt_offset);
2833 rctx->chan_idx = select_channel();
2834 err = handle_aead_req(rctx);
2835 if (err != -EINPROGRESS)
2836 /* synchronous result */
2837 spu_chunk_cleanup(rctx);
2842 static int aead_authenc_setkey(struct crypto_aead *cipher,
2843 const u8 *key, unsigned int keylen)
2845 struct spu_hw *spu = &iproc_priv.spu;
2846 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
2847 struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
2848 struct rtattr *rta = (void *)key;
2849 struct crypto_authenc_key_param *param;
2850 const u8 *origkey = key;
2851 const unsigned int origkeylen = keylen;
2855 flow_log("%s() aead:%p key:%p keylen:%u\n", __func__, cipher, key,
2857 flow_dump(" key: ", key, keylen);
2859 if (!RTA_OK(rta, keylen))
2861 if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
2863 if (RTA_PAYLOAD(rta) < sizeof(*param))
2866 param = RTA_DATA(rta);
2867 ctx->enckeylen = be32_to_cpu(param->enckeylen);
2869 key += RTA_ALIGN(rta->rta_len);
2870 keylen -= RTA_ALIGN(rta->rta_len);
2872 if (keylen < ctx->enckeylen)
2874 if (ctx->enckeylen > MAX_KEY_SIZE)
2877 ctx->authkeylen = keylen - ctx->enckeylen;
2879 if (ctx->authkeylen > MAX_KEY_SIZE)
2882 memcpy(ctx->enckey, key + ctx->authkeylen, ctx->enckeylen);
2883 /* May end up padding auth key. So make sure it's zeroed. */
2884 memset(ctx->authkey, 0, sizeof(ctx->authkey));
2885 memcpy(ctx->authkey, key, ctx->authkeylen);
2887 switch (ctx->alg->cipher_info.alg) {
2888 case CIPHER_ALG_DES:
2889 if (ctx->enckeylen == DES_KEY_SIZE) {
2890 u32 tmp[DES_EXPKEY_WORDS];
2891 u32 flags = CRYPTO_TFM_RES_WEAK_KEY;
2893 if (des_ekey(tmp, key) == 0) {
2894 if (crypto_aead_get_flags(cipher) &
2895 CRYPTO_TFM_REQ_WEAK_KEY) {
2896 crypto_aead_set_flags(cipher, flags);
2901 ctx->cipher_type = CIPHER_TYPE_DES;
2906 case CIPHER_ALG_3DES:
2907 if (ctx->enckeylen == (DES_KEY_SIZE * 3)) {
2908 const u32 *K = (const u32 *)key;
2909 u32 flags = CRYPTO_TFM_RES_BAD_KEY_SCHED;
2911 if (!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
2912 !((K[2] ^ K[4]) | (K[3] ^ K[5]))) {
2913 crypto_aead_set_flags(cipher, flags);
2917 ctx->cipher_type = CIPHER_TYPE_3DES;
2919 crypto_aead_set_flags(cipher,
2920 CRYPTO_TFM_RES_BAD_KEY_LEN);
2924 case CIPHER_ALG_AES:
2925 switch (ctx->enckeylen) {
2926 case AES_KEYSIZE_128:
2927 ctx->cipher_type = CIPHER_TYPE_AES128;
2929 case AES_KEYSIZE_192:
2930 ctx->cipher_type = CIPHER_TYPE_AES192;
2932 case AES_KEYSIZE_256:
2933 ctx->cipher_type = CIPHER_TYPE_AES256;
2939 case CIPHER_ALG_RC4:
2940 ctx->cipher_type = CIPHER_TYPE_INIT;
2943 pr_err("%s() Error: Unknown cipher alg\n", __func__);
2947 flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen,
2949 flow_dump(" enc: ", ctx->enckey, ctx->enckeylen);
2950 flow_dump(" auth: ", ctx->authkey, ctx->authkeylen);
2952 /* setkey the fallback just in case we needto use it */
2953 if (ctx->fallback_cipher) {
2954 flow_log(" running fallback setkey()\n");
2956 ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK;
2957 ctx->fallback_cipher->base.crt_flags |=
2958 tfm->crt_flags & CRYPTO_TFM_REQ_MASK;
2960 crypto_aead_setkey(ctx->fallback_cipher, origkey,
2963 flow_log(" fallback setkey() returned:%d\n", ret);
2964 tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
2966 (ctx->fallback_cipher->base.crt_flags &
2967 CRYPTO_TFM_RES_MASK);
2971 ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,
2975 atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]);
2981 ctx->authkeylen = 0;
2982 ctx->digestsize = 0;
2984 crypto_aead_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
2988 static int aead_gcm_ccm_setkey(struct crypto_aead *cipher,
2989 const u8 *key, unsigned int keylen)
2991 struct spu_hw *spu = &iproc_priv.spu;
2992 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
2993 struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
2997 flow_log("%s() keylen:%u\n", __func__, keylen);
2998 flow_dump(" key: ", key, keylen);
3001 ctx->digestsize = keylen;
3003 ctx->enckeylen = keylen;
3004 ctx->authkeylen = 0;
3005 memcpy(ctx->enckey, key, ctx->enckeylen);
3007 switch (ctx->enckeylen) {
3008 case AES_KEYSIZE_128:
3009 ctx->cipher_type = CIPHER_TYPE_AES128;
3011 case AES_KEYSIZE_192:
3012 ctx->cipher_type = CIPHER_TYPE_AES192;
3014 case AES_KEYSIZE_256:
3015 ctx->cipher_type = CIPHER_TYPE_AES256;
3021 flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen,
3023 flow_dump(" enc: ", ctx->enckey, ctx->enckeylen);
3024 flow_dump(" auth: ", ctx->authkey, ctx->authkeylen);
3026 /* setkey the fallback just in case we need to use it */
3027 if (ctx->fallback_cipher) {
3028 flow_log(" running fallback setkey()\n");
3030 ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK;
3031 ctx->fallback_cipher->base.crt_flags |=
3032 tfm->crt_flags & CRYPTO_TFM_REQ_MASK;
3033 ret = crypto_aead_setkey(ctx->fallback_cipher, key,
3034 keylen + ctx->salt_len);
3036 flow_log(" fallback setkey() returned:%d\n", ret);
3037 tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
3039 (ctx->fallback_cipher->base.crt_flags &
3040 CRYPTO_TFM_RES_MASK);
3044 ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,
3048 atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]);
3050 flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen,
3057 ctx->authkeylen = 0;
3058 ctx->digestsize = 0;
3060 crypto_aead_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
3065 * aead_gcm_esp_setkey() - setkey() operation for ESP variant of GCM AES.
3066 * @cipher: AEAD structure
3067 * @key: Key followed by 4 bytes of salt
3068 * @keylen: Length of key plus salt, in bytes
3070 * Extracts salt from key and stores it to be prepended to IV on each request.
3071 * Digest is always 16 bytes
3073 * Return: Value from generic gcm setkey.
3075 static int aead_gcm_esp_setkey(struct crypto_aead *cipher,
3076 const u8 *key, unsigned int keylen)
3078 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
3080 flow_log("%s\n", __func__);
3081 ctx->salt_len = GCM_ESP_SALT_SIZE;
3082 ctx->salt_offset = GCM_ESP_SALT_OFFSET;
3083 memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE);
3084 keylen -= GCM_ESP_SALT_SIZE;
3085 ctx->digestsize = GCM_ESP_DIGESTSIZE;
3087 flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE);
3089 return aead_gcm_ccm_setkey(cipher, key, keylen);
3093 * rfc4543_gcm_esp_setkey() - setkey operation for RFC4543 variant of GCM/GMAC.
3094 * cipher: AEAD structure
3095 * key: Key followed by 4 bytes of salt
3096 * keylen: Length of key plus salt, in bytes
3098 * Extracts salt from key and stores it to be prepended to IV on each request.
3099 * Digest is always 16 bytes
3101 * Return: Value from generic gcm setkey.
3103 static int rfc4543_gcm_esp_setkey(struct crypto_aead *cipher,
3104 const u8 *key, unsigned int keylen)
3106 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
3108 flow_log("%s\n", __func__);
3109 ctx->salt_len = GCM_ESP_SALT_SIZE;
3110 ctx->salt_offset = GCM_ESP_SALT_OFFSET;
3111 memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE);
3112 keylen -= GCM_ESP_SALT_SIZE;
3113 ctx->digestsize = GCM_ESP_DIGESTSIZE;
3115 ctx->is_rfc4543 = true;
3116 flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE);
3118 return aead_gcm_ccm_setkey(cipher, key, keylen);
3122 * aead_ccm_esp_setkey() - setkey() operation for ESP variant of CCM AES.
3123 * @cipher: AEAD structure
3124 * @key: Key followed by 4 bytes of salt
3125 * @keylen: Length of key plus salt, in bytes
3127 * Extracts salt from key and stores it to be prepended to IV on each request.
3128 * Digest is always 16 bytes
3130 * Return: Value from generic ccm setkey.
3132 static int aead_ccm_esp_setkey(struct crypto_aead *cipher,
3133 const u8 *key, unsigned int keylen)
3135 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
3137 flow_log("%s\n", __func__);
3138 ctx->salt_len = CCM_ESP_SALT_SIZE;
3139 ctx->salt_offset = CCM_ESP_SALT_OFFSET;
3140 memcpy(ctx->salt, key + keylen - CCM_ESP_SALT_SIZE, CCM_ESP_SALT_SIZE);
3141 keylen -= CCM_ESP_SALT_SIZE;
3143 flow_dump("salt: ", ctx->salt, CCM_ESP_SALT_SIZE);
3145 return aead_gcm_ccm_setkey(cipher, key, keylen);
3148 static int aead_setauthsize(struct crypto_aead *cipher, unsigned int authsize)
3150 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
3153 flow_log("%s() authkeylen:%u authsize:%u\n",
3154 __func__, ctx->authkeylen, authsize);
3156 ctx->digestsize = authsize;
3158 /* setkey the fallback just in case we needto use it */
3159 if (ctx->fallback_cipher) {
3160 flow_log(" running fallback setauth()\n");
3162 ret = crypto_aead_setauthsize(ctx->fallback_cipher, authsize);
3164 flow_log(" fallback setauth() returned:%d\n", ret);
3170 static int aead_encrypt(struct aead_request *req)
3172 flow_log("%s() cryptlen:%u %08x\n", __func__, req->cryptlen,
3174 dump_sg(req->src, 0, req->cryptlen + req->assoclen);
3175 flow_log(" assoc_len:%u\n", req->assoclen);
3177 return aead_enqueue(req, true);
3180 static int aead_decrypt(struct aead_request *req)
3182 flow_log("%s() cryptlen:%u\n", __func__, req->cryptlen);
3183 dump_sg(req->src, 0, req->cryptlen + req->assoclen);
3184 flow_log(" assoc_len:%u\n", req->assoclen);
3186 return aead_enqueue(req, false);
3189 /* ==================== Supported Cipher Algorithms ==================== */
3191 static struct iproc_alg_s driver_algs[] = {
3193 .type = CRYPTO_ALG_TYPE_AEAD,
3196 .cra_name = "gcm(aes)",
3197 .cra_driver_name = "gcm-aes-iproc",
3198 .cra_blocksize = AES_BLOCK_SIZE,
3199 .cra_flags = CRYPTO_ALG_NEED_FALLBACK
3201 .setkey = aead_gcm_ccm_setkey,
3202 .ivsize = GCM_AES_IV_SIZE,
3203 .maxauthsize = AES_BLOCK_SIZE,
3206 .alg = CIPHER_ALG_AES,
3207 .mode = CIPHER_MODE_GCM,
3210 .alg = HASH_ALG_AES,
3211 .mode = HASH_MODE_GCM,
3216 .type = CRYPTO_ALG_TYPE_AEAD,
3219 .cra_name = "ccm(aes)",
3220 .cra_driver_name = "ccm-aes-iproc",
3221 .cra_blocksize = AES_BLOCK_SIZE,
3222 .cra_flags = CRYPTO_ALG_NEED_FALLBACK
3224 .setkey = aead_gcm_ccm_setkey,
3225 .ivsize = CCM_AES_IV_SIZE,
3226 .maxauthsize = AES_BLOCK_SIZE,
3229 .alg = CIPHER_ALG_AES,
3230 .mode = CIPHER_MODE_CCM,
3233 .alg = HASH_ALG_AES,
3234 .mode = HASH_MODE_CCM,
3239 .type = CRYPTO_ALG_TYPE_AEAD,
3242 .cra_name = "rfc4106(gcm(aes))",
3243 .cra_driver_name = "gcm-aes-esp-iproc",
3244 .cra_blocksize = AES_BLOCK_SIZE,
3245 .cra_flags = CRYPTO_ALG_NEED_FALLBACK
3247 .setkey = aead_gcm_esp_setkey,
3248 .ivsize = GCM_RFC4106_IV_SIZE,
3249 .maxauthsize = AES_BLOCK_SIZE,
3252 .alg = CIPHER_ALG_AES,
3253 .mode = CIPHER_MODE_GCM,
3256 .alg = HASH_ALG_AES,
3257 .mode = HASH_MODE_GCM,
3262 .type = CRYPTO_ALG_TYPE_AEAD,
3265 .cra_name = "rfc4309(ccm(aes))",
3266 .cra_driver_name = "ccm-aes-esp-iproc",
3267 .cra_blocksize = AES_BLOCK_SIZE,
3268 .cra_flags = CRYPTO_ALG_NEED_FALLBACK
3270 .setkey = aead_ccm_esp_setkey,
3271 .ivsize = CCM_AES_IV_SIZE,
3272 .maxauthsize = AES_BLOCK_SIZE,
3275 .alg = CIPHER_ALG_AES,
3276 .mode = CIPHER_MODE_CCM,
3279 .alg = HASH_ALG_AES,
3280 .mode = HASH_MODE_CCM,
3285 .type = CRYPTO_ALG_TYPE_AEAD,
3288 .cra_name = "rfc4543(gcm(aes))",
3289 .cra_driver_name = "gmac-aes-esp-iproc",
3290 .cra_blocksize = AES_BLOCK_SIZE,
3291 .cra_flags = CRYPTO_ALG_NEED_FALLBACK
3293 .setkey = rfc4543_gcm_esp_setkey,
3294 .ivsize = GCM_RFC4106_IV_SIZE,
3295 .maxauthsize = AES_BLOCK_SIZE,
3298 .alg = CIPHER_ALG_AES,
3299 .mode = CIPHER_MODE_GCM,
3302 .alg = HASH_ALG_AES,
3303 .mode = HASH_MODE_GCM,
3308 .type = CRYPTO_ALG_TYPE_AEAD,
3311 .cra_name = "authenc(hmac(md5),cbc(aes))",
3312 .cra_driver_name = "authenc-hmac-md5-cbc-aes-iproc",
3313 .cra_blocksize = AES_BLOCK_SIZE,
3314 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3316 .setkey = aead_authenc_setkey,
3317 .ivsize = AES_BLOCK_SIZE,
3318 .maxauthsize = MD5_DIGEST_SIZE,
3321 .alg = CIPHER_ALG_AES,
3322 .mode = CIPHER_MODE_CBC,
3325 .alg = HASH_ALG_MD5,
3326 .mode = HASH_MODE_HMAC,
3331 .type = CRYPTO_ALG_TYPE_AEAD,
3334 .cra_name = "authenc(hmac(sha1),cbc(aes))",
3335 .cra_driver_name = "authenc-hmac-sha1-cbc-aes-iproc",
3336 .cra_blocksize = AES_BLOCK_SIZE,
3337 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3339 .setkey = aead_authenc_setkey,
3340 .ivsize = AES_BLOCK_SIZE,
3341 .maxauthsize = SHA1_DIGEST_SIZE,
3344 .alg = CIPHER_ALG_AES,
3345 .mode = CIPHER_MODE_CBC,
3348 .alg = HASH_ALG_SHA1,
3349 .mode = HASH_MODE_HMAC,
3354 .type = CRYPTO_ALG_TYPE_AEAD,
3357 .cra_name = "authenc(hmac(sha256),cbc(aes))",
3358 .cra_driver_name = "authenc-hmac-sha256-cbc-aes-iproc",
3359 .cra_blocksize = AES_BLOCK_SIZE,
3360 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3362 .setkey = aead_authenc_setkey,
3363 .ivsize = AES_BLOCK_SIZE,
3364 .maxauthsize = SHA256_DIGEST_SIZE,
3367 .alg = CIPHER_ALG_AES,
3368 .mode = CIPHER_MODE_CBC,
3371 .alg = HASH_ALG_SHA256,
3372 .mode = HASH_MODE_HMAC,
3377 .type = CRYPTO_ALG_TYPE_AEAD,
3380 .cra_name = "authenc(hmac(md5),cbc(des))",
3381 .cra_driver_name = "authenc-hmac-md5-cbc-des-iproc",
3382 .cra_blocksize = DES_BLOCK_SIZE,
3383 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3385 .setkey = aead_authenc_setkey,
3386 .ivsize = DES_BLOCK_SIZE,
3387 .maxauthsize = MD5_DIGEST_SIZE,
3390 .alg = CIPHER_ALG_DES,
3391 .mode = CIPHER_MODE_CBC,
3394 .alg = HASH_ALG_MD5,
3395 .mode = HASH_MODE_HMAC,
3400 .type = CRYPTO_ALG_TYPE_AEAD,
3403 .cra_name = "authenc(hmac(sha1),cbc(des))",
3404 .cra_driver_name = "authenc-hmac-sha1-cbc-des-iproc",
3405 .cra_blocksize = DES_BLOCK_SIZE,
3406 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3408 .setkey = aead_authenc_setkey,
3409 .ivsize = DES_BLOCK_SIZE,
3410 .maxauthsize = SHA1_DIGEST_SIZE,
3413 .alg = CIPHER_ALG_DES,
3414 .mode = CIPHER_MODE_CBC,
3417 .alg = HASH_ALG_SHA1,
3418 .mode = HASH_MODE_HMAC,
3423 .type = CRYPTO_ALG_TYPE_AEAD,
3426 .cra_name = "authenc(hmac(sha224),cbc(des))",
3427 .cra_driver_name = "authenc-hmac-sha224-cbc-des-iproc",
3428 .cra_blocksize = DES_BLOCK_SIZE,
3429 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3431 .setkey = aead_authenc_setkey,
3432 .ivsize = DES_BLOCK_SIZE,
3433 .maxauthsize = SHA224_DIGEST_SIZE,
3436 .alg = CIPHER_ALG_DES,
3437 .mode = CIPHER_MODE_CBC,
3440 .alg = HASH_ALG_SHA224,
3441 .mode = HASH_MODE_HMAC,
3446 .type = CRYPTO_ALG_TYPE_AEAD,
3449 .cra_name = "authenc(hmac(sha256),cbc(des))",
3450 .cra_driver_name = "authenc-hmac-sha256-cbc-des-iproc",
3451 .cra_blocksize = DES_BLOCK_SIZE,
3452 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3454 .setkey = aead_authenc_setkey,
3455 .ivsize = DES_BLOCK_SIZE,
3456 .maxauthsize = SHA256_DIGEST_SIZE,
3459 .alg = CIPHER_ALG_DES,
3460 .mode = CIPHER_MODE_CBC,
3463 .alg = HASH_ALG_SHA256,
3464 .mode = HASH_MODE_HMAC,
3469 .type = CRYPTO_ALG_TYPE_AEAD,
3472 .cra_name = "authenc(hmac(sha384),cbc(des))",
3473 .cra_driver_name = "authenc-hmac-sha384-cbc-des-iproc",
3474 .cra_blocksize = DES_BLOCK_SIZE,
3475 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3477 .setkey = aead_authenc_setkey,
3478 .ivsize = DES_BLOCK_SIZE,
3479 .maxauthsize = SHA384_DIGEST_SIZE,
3482 .alg = CIPHER_ALG_DES,
3483 .mode = CIPHER_MODE_CBC,
3486 .alg = HASH_ALG_SHA384,
3487 .mode = HASH_MODE_HMAC,
3492 .type = CRYPTO_ALG_TYPE_AEAD,
3495 .cra_name = "authenc(hmac(sha512),cbc(des))",
3496 .cra_driver_name = "authenc-hmac-sha512-cbc-des-iproc",
3497 .cra_blocksize = DES_BLOCK_SIZE,
3498 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3500 .setkey = aead_authenc_setkey,
3501 .ivsize = DES_BLOCK_SIZE,
3502 .maxauthsize = SHA512_DIGEST_SIZE,
3505 .alg = CIPHER_ALG_DES,
3506 .mode = CIPHER_MODE_CBC,
3509 .alg = HASH_ALG_SHA512,
3510 .mode = HASH_MODE_HMAC,
3515 .type = CRYPTO_ALG_TYPE_AEAD,
3518 .cra_name = "authenc(hmac(md5),cbc(des3_ede))",
3519 .cra_driver_name = "authenc-hmac-md5-cbc-des3-iproc",
3520 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
3521 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3523 .setkey = aead_authenc_setkey,
3524 .ivsize = DES3_EDE_BLOCK_SIZE,
3525 .maxauthsize = MD5_DIGEST_SIZE,
3528 .alg = CIPHER_ALG_3DES,
3529 .mode = CIPHER_MODE_CBC,
3532 .alg = HASH_ALG_MD5,
3533 .mode = HASH_MODE_HMAC,
3538 .type = CRYPTO_ALG_TYPE_AEAD,
3541 .cra_name = "authenc(hmac(sha1),cbc(des3_ede))",
3542 .cra_driver_name = "authenc-hmac-sha1-cbc-des3-iproc",
3543 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
3544 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3546 .setkey = aead_authenc_setkey,
3547 .ivsize = DES3_EDE_BLOCK_SIZE,
3548 .maxauthsize = SHA1_DIGEST_SIZE,
3551 .alg = CIPHER_ALG_3DES,
3552 .mode = CIPHER_MODE_CBC,
3555 .alg = HASH_ALG_SHA1,
3556 .mode = HASH_MODE_HMAC,
3561 .type = CRYPTO_ALG_TYPE_AEAD,
3564 .cra_name = "authenc(hmac(sha224),cbc(des3_ede))",
3565 .cra_driver_name = "authenc-hmac-sha224-cbc-des3-iproc",
3566 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
3567 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3569 .setkey = aead_authenc_setkey,
3570 .ivsize = DES3_EDE_BLOCK_SIZE,
3571 .maxauthsize = SHA224_DIGEST_SIZE,
3574 .alg = CIPHER_ALG_3DES,
3575 .mode = CIPHER_MODE_CBC,
3578 .alg = HASH_ALG_SHA224,
3579 .mode = HASH_MODE_HMAC,
3584 .type = CRYPTO_ALG_TYPE_AEAD,
3587 .cra_name = "authenc(hmac(sha256),cbc(des3_ede))",
3588 .cra_driver_name = "authenc-hmac-sha256-cbc-des3-iproc",
3589 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
3590 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3592 .setkey = aead_authenc_setkey,
3593 .ivsize = DES3_EDE_BLOCK_SIZE,
3594 .maxauthsize = SHA256_DIGEST_SIZE,
3597 .alg = CIPHER_ALG_3DES,
3598 .mode = CIPHER_MODE_CBC,
3601 .alg = HASH_ALG_SHA256,
3602 .mode = HASH_MODE_HMAC,
3607 .type = CRYPTO_ALG_TYPE_AEAD,
3610 .cra_name = "authenc(hmac(sha384),cbc(des3_ede))",
3611 .cra_driver_name = "authenc-hmac-sha384-cbc-des3-iproc",
3612 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
3613 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3615 .setkey = aead_authenc_setkey,
3616 .ivsize = DES3_EDE_BLOCK_SIZE,
3617 .maxauthsize = SHA384_DIGEST_SIZE,
3620 .alg = CIPHER_ALG_3DES,
3621 .mode = CIPHER_MODE_CBC,
3624 .alg = HASH_ALG_SHA384,
3625 .mode = HASH_MODE_HMAC,
3630 .type = CRYPTO_ALG_TYPE_AEAD,
3633 .cra_name = "authenc(hmac(sha512),cbc(des3_ede))",
3634 .cra_driver_name = "authenc-hmac-sha512-cbc-des3-iproc",
3635 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
3636 .cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
3638 .setkey = aead_authenc_setkey,
3639 .ivsize = DES3_EDE_BLOCK_SIZE,
3640 .maxauthsize = SHA512_DIGEST_SIZE,
3643 .alg = CIPHER_ALG_3DES,
3644 .mode = CIPHER_MODE_CBC,
3647 .alg = HASH_ALG_SHA512,
3648 .mode = HASH_MODE_HMAC,
3653 /* ABLKCIPHER algorithms. */
3655 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3657 .cra_name = "ecb(arc4)",
3658 .cra_driver_name = "ecb-arc4-iproc",
3659 .cra_blocksize = ARC4_BLOCK_SIZE,
3661 .min_keysize = ARC4_MIN_KEY_SIZE,
3662 .max_keysize = ARC4_MAX_KEY_SIZE,
3667 .alg = CIPHER_ALG_RC4,
3668 .mode = CIPHER_MODE_NONE,
3671 .alg = HASH_ALG_NONE,
3672 .mode = HASH_MODE_NONE,
3676 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3678 .cra_name = "ofb(des)",
3679 .cra_driver_name = "ofb-des-iproc",
3680 .cra_blocksize = DES_BLOCK_SIZE,
3682 .min_keysize = DES_KEY_SIZE,
3683 .max_keysize = DES_KEY_SIZE,
3684 .ivsize = DES_BLOCK_SIZE,
3688 .alg = CIPHER_ALG_DES,
3689 .mode = CIPHER_MODE_OFB,
3692 .alg = HASH_ALG_NONE,
3693 .mode = HASH_MODE_NONE,
3697 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3699 .cra_name = "cbc(des)",
3700 .cra_driver_name = "cbc-des-iproc",
3701 .cra_blocksize = DES_BLOCK_SIZE,
3703 .min_keysize = DES_KEY_SIZE,
3704 .max_keysize = DES_KEY_SIZE,
3705 .ivsize = DES_BLOCK_SIZE,
3709 .alg = CIPHER_ALG_DES,
3710 .mode = CIPHER_MODE_CBC,
3713 .alg = HASH_ALG_NONE,
3714 .mode = HASH_MODE_NONE,
3718 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3720 .cra_name = "ecb(des)",
3721 .cra_driver_name = "ecb-des-iproc",
3722 .cra_blocksize = DES_BLOCK_SIZE,
3724 .min_keysize = DES_KEY_SIZE,
3725 .max_keysize = DES_KEY_SIZE,
3730 .alg = CIPHER_ALG_DES,
3731 .mode = CIPHER_MODE_ECB,
3734 .alg = HASH_ALG_NONE,
3735 .mode = HASH_MODE_NONE,
3739 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3741 .cra_name = "ofb(des3_ede)",
3742 .cra_driver_name = "ofb-des3-iproc",
3743 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
3745 .min_keysize = DES3_EDE_KEY_SIZE,
3746 .max_keysize = DES3_EDE_KEY_SIZE,
3747 .ivsize = DES3_EDE_BLOCK_SIZE,
3751 .alg = CIPHER_ALG_3DES,
3752 .mode = CIPHER_MODE_OFB,
3755 .alg = HASH_ALG_NONE,
3756 .mode = HASH_MODE_NONE,
3760 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3762 .cra_name = "cbc(des3_ede)",
3763 .cra_driver_name = "cbc-des3-iproc",
3764 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
3766 .min_keysize = DES3_EDE_KEY_SIZE,
3767 .max_keysize = DES3_EDE_KEY_SIZE,
3768 .ivsize = DES3_EDE_BLOCK_SIZE,
3772 .alg = CIPHER_ALG_3DES,
3773 .mode = CIPHER_MODE_CBC,
3776 .alg = HASH_ALG_NONE,
3777 .mode = HASH_MODE_NONE,
3781 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3783 .cra_name = "ecb(des3_ede)",
3784 .cra_driver_name = "ecb-des3-iproc",
3785 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
3787 .min_keysize = DES3_EDE_KEY_SIZE,
3788 .max_keysize = DES3_EDE_KEY_SIZE,
3793 .alg = CIPHER_ALG_3DES,
3794 .mode = CIPHER_MODE_ECB,
3797 .alg = HASH_ALG_NONE,
3798 .mode = HASH_MODE_NONE,
3802 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3804 .cra_name = "ofb(aes)",
3805 .cra_driver_name = "ofb-aes-iproc",
3806 .cra_blocksize = AES_BLOCK_SIZE,
3808 .min_keysize = AES_MIN_KEY_SIZE,
3809 .max_keysize = AES_MAX_KEY_SIZE,
3810 .ivsize = AES_BLOCK_SIZE,
3814 .alg = CIPHER_ALG_AES,
3815 .mode = CIPHER_MODE_OFB,
3818 .alg = HASH_ALG_NONE,
3819 .mode = HASH_MODE_NONE,
3823 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3825 .cra_name = "cbc(aes)",
3826 .cra_driver_name = "cbc-aes-iproc",
3827 .cra_blocksize = AES_BLOCK_SIZE,
3829 .min_keysize = AES_MIN_KEY_SIZE,
3830 .max_keysize = AES_MAX_KEY_SIZE,
3831 .ivsize = AES_BLOCK_SIZE,
3835 .alg = CIPHER_ALG_AES,
3836 .mode = CIPHER_MODE_CBC,
3839 .alg = HASH_ALG_NONE,
3840 .mode = HASH_MODE_NONE,
3844 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3846 .cra_name = "ecb(aes)",
3847 .cra_driver_name = "ecb-aes-iproc",
3848 .cra_blocksize = AES_BLOCK_SIZE,
3850 .min_keysize = AES_MIN_KEY_SIZE,
3851 .max_keysize = AES_MAX_KEY_SIZE,
3856 .alg = CIPHER_ALG_AES,
3857 .mode = CIPHER_MODE_ECB,
3860 .alg = HASH_ALG_NONE,
3861 .mode = HASH_MODE_NONE,
3865 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3867 .cra_name = "ctr(aes)",
3868 .cra_driver_name = "ctr-aes-iproc",
3869 .cra_blocksize = AES_BLOCK_SIZE,
3871 .min_keysize = AES_MIN_KEY_SIZE,
3872 .max_keysize = AES_MAX_KEY_SIZE,
3873 .ivsize = AES_BLOCK_SIZE,
3877 .alg = CIPHER_ALG_AES,
3878 .mode = CIPHER_MODE_CTR,
3881 .alg = HASH_ALG_NONE,
3882 .mode = HASH_MODE_NONE,
3886 .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
3888 .cra_name = "xts(aes)",
3889 .cra_driver_name = "xts-aes-iproc",
3890 .cra_blocksize = AES_BLOCK_SIZE,
3892 .min_keysize = 2 * AES_MIN_KEY_SIZE,
3893 .max_keysize = 2 * AES_MAX_KEY_SIZE,
3894 .ivsize = AES_BLOCK_SIZE,
3898 .alg = CIPHER_ALG_AES,
3899 .mode = CIPHER_MODE_XTS,
3902 .alg = HASH_ALG_NONE,
3903 .mode = HASH_MODE_NONE,
3907 /* AHASH algorithms. */
3909 .type = CRYPTO_ALG_TYPE_AHASH,
3911 .halg.digestsize = MD5_DIGEST_SIZE,
3914 .cra_driver_name = "md5-iproc",
3915 .cra_blocksize = MD5_BLOCK_WORDS * 4,
3916 .cra_flags = CRYPTO_ALG_ASYNC,
3920 .alg = CIPHER_ALG_NONE,
3921 .mode = CIPHER_MODE_NONE,
3924 .alg = HASH_ALG_MD5,
3925 .mode = HASH_MODE_HASH,
3929 .type = CRYPTO_ALG_TYPE_AHASH,
3931 .halg.digestsize = MD5_DIGEST_SIZE,
3933 .cra_name = "hmac(md5)",
3934 .cra_driver_name = "hmac-md5-iproc",
3935 .cra_blocksize = MD5_BLOCK_WORDS * 4,
3939 .alg = CIPHER_ALG_NONE,
3940 .mode = CIPHER_MODE_NONE,
3943 .alg = HASH_ALG_MD5,
3944 .mode = HASH_MODE_HMAC,
3947 {.type = CRYPTO_ALG_TYPE_AHASH,
3949 .halg.digestsize = SHA1_DIGEST_SIZE,
3952 .cra_driver_name = "sha1-iproc",
3953 .cra_blocksize = SHA1_BLOCK_SIZE,
3957 .alg = CIPHER_ALG_NONE,
3958 .mode = CIPHER_MODE_NONE,
3961 .alg = HASH_ALG_SHA1,
3962 .mode = HASH_MODE_HASH,
3965 {.type = CRYPTO_ALG_TYPE_AHASH,
3967 .halg.digestsize = SHA1_DIGEST_SIZE,
3969 .cra_name = "hmac(sha1)",
3970 .cra_driver_name = "hmac-sha1-iproc",
3971 .cra_blocksize = SHA1_BLOCK_SIZE,
3975 .alg = CIPHER_ALG_NONE,
3976 .mode = CIPHER_MODE_NONE,
3979 .alg = HASH_ALG_SHA1,
3980 .mode = HASH_MODE_HMAC,
3983 {.type = CRYPTO_ALG_TYPE_AHASH,
3985 .halg.digestsize = SHA224_DIGEST_SIZE,
3987 .cra_name = "sha224",
3988 .cra_driver_name = "sha224-iproc",
3989 .cra_blocksize = SHA224_BLOCK_SIZE,
3993 .alg = CIPHER_ALG_NONE,
3994 .mode = CIPHER_MODE_NONE,
3997 .alg = HASH_ALG_SHA224,
3998 .mode = HASH_MODE_HASH,
4001 {.type = CRYPTO_ALG_TYPE_AHASH,
4003 .halg.digestsize = SHA224_DIGEST_SIZE,
4005 .cra_name = "hmac(sha224)",
4006 .cra_driver_name = "hmac-sha224-iproc",
4007 .cra_blocksize = SHA224_BLOCK_SIZE,
4011 .alg = CIPHER_ALG_NONE,
4012 .mode = CIPHER_MODE_NONE,
4015 .alg = HASH_ALG_SHA224,
4016 .mode = HASH_MODE_HMAC,
4019 {.type = CRYPTO_ALG_TYPE_AHASH,
4021 .halg.digestsize = SHA256_DIGEST_SIZE,
4023 .cra_name = "sha256",
4024 .cra_driver_name = "sha256-iproc",
4025 .cra_blocksize = SHA256_BLOCK_SIZE,
4029 .alg = CIPHER_ALG_NONE,
4030 .mode = CIPHER_MODE_NONE,
4033 .alg = HASH_ALG_SHA256,
4034 .mode = HASH_MODE_HASH,
4037 {.type = CRYPTO_ALG_TYPE_AHASH,
4039 .halg.digestsize = SHA256_DIGEST_SIZE,
4041 .cra_name = "hmac(sha256)",
4042 .cra_driver_name = "hmac-sha256-iproc",
4043 .cra_blocksize = SHA256_BLOCK_SIZE,
4047 .alg = CIPHER_ALG_NONE,
4048 .mode = CIPHER_MODE_NONE,
4051 .alg = HASH_ALG_SHA256,
4052 .mode = HASH_MODE_HMAC,
4056 .type = CRYPTO_ALG_TYPE_AHASH,
4058 .halg.digestsize = SHA384_DIGEST_SIZE,
4060 .cra_name = "sha384",
4061 .cra_driver_name = "sha384-iproc",
4062 .cra_blocksize = SHA384_BLOCK_SIZE,
4066 .alg = CIPHER_ALG_NONE,
4067 .mode = CIPHER_MODE_NONE,
4070 .alg = HASH_ALG_SHA384,
4071 .mode = HASH_MODE_HASH,
4075 .type = CRYPTO_ALG_TYPE_AHASH,
4077 .halg.digestsize = SHA384_DIGEST_SIZE,
4079 .cra_name = "hmac(sha384)",
4080 .cra_driver_name = "hmac-sha384-iproc",
4081 .cra_blocksize = SHA384_BLOCK_SIZE,
4085 .alg = CIPHER_ALG_NONE,
4086 .mode = CIPHER_MODE_NONE,
4089 .alg = HASH_ALG_SHA384,
4090 .mode = HASH_MODE_HMAC,
4094 .type = CRYPTO_ALG_TYPE_AHASH,
4096 .halg.digestsize = SHA512_DIGEST_SIZE,
4098 .cra_name = "sha512",
4099 .cra_driver_name = "sha512-iproc",
4100 .cra_blocksize = SHA512_BLOCK_SIZE,
4104 .alg = CIPHER_ALG_NONE,
4105 .mode = CIPHER_MODE_NONE,
4108 .alg = HASH_ALG_SHA512,
4109 .mode = HASH_MODE_HASH,
4113 .type = CRYPTO_ALG_TYPE_AHASH,
4115 .halg.digestsize = SHA512_DIGEST_SIZE,
4117 .cra_name = "hmac(sha512)",
4118 .cra_driver_name = "hmac-sha512-iproc",
4119 .cra_blocksize = SHA512_BLOCK_SIZE,
4123 .alg = CIPHER_ALG_NONE,
4124 .mode = CIPHER_MODE_NONE,
4127 .alg = HASH_ALG_SHA512,
4128 .mode = HASH_MODE_HMAC,
4132 .type = CRYPTO_ALG_TYPE_AHASH,
4134 .halg.digestsize = SHA3_224_DIGEST_SIZE,
4136 .cra_name = "sha3-224",
4137 .cra_driver_name = "sha3-224-iproc",
4138 .cra_blocksize = SHA3_224_BLOCK_SIZE,
4142 .alg = CIPHER_ALG_NONE,
4143 .mode = CIPHER_MODE_NONE,
4146 .alg = HASH_ALG_SHA3_224,
4147 .mode = HASH_MODE_HASH,
4151 .type = CRYPTO_ALG_TYPE_AHASH,
4153 .halg.digestsize = SHA3_224_DIGEST_SIZE,
4155 .cra_name = "hmac(sha3-224)",
4156 .cra_driver_name = "hmac-sha3-224-iproc",
4157 .cra_blocksize = SHA3_224_BLOCK_SIZE,
4161 .alg = CIPHER_ALG_NONE,
4162 .mode = CIPHER_MODE_NONE,
4165 .alg = HASH_ALG_SHA3_224,
4166 .mode = HASH_MODE_HMAC
4170 .type = CRYPTO_ALG_TYPE_AHASH,
4172 .halg.digestsize = SHA3_256_DIGEST_SIZE,
4174 .cra_name = "sha3-256",
4175 .cra_driver_name = "sha3-256-iproc",
4176 .cra_blocksize = SHA3_256_BLOCK_SIZE,
4180 .alg = CIPHER_ALG_NONE,
4181 .mode = CIPHER_MODE_NONE,
4184 .alg = HASH_ALG_SHA3_256,
4185 .mode = HASH_MODE_HASH,
4189 .type = CRYPTO_ALG_TYPE_AHASH,
4191 .halg.digestsize = SHA3_256_DIGEST_SIZE,
4193 .cra_name = "hmac(sha3-256)",
4194 .cra_driver_name = "hmac-sha3-256-iproc",
4195 .cra_blocksize = SHA3_256_BLOCK_SIZE,
4199 .alg = CIPHER_ALG_NONE,
4200 .mode = CIPHER_MODE_NONE,
4203 .alg = HASH_ALG_SHA3_256,
4204 .mode = HASH_MODE_HMAC,
4208 .type = CRYPTO_ALG_TYPE_AHASH,
4210 .halg.digestsize = SHA3_384_DIGEST_SIZE,
4212 .cra_name = "sha3-384",
4213 .cra_driver_name = "sha3-384-iproc",
4214 .cra_blocksize = SHA3_224_BLOCK_SIZE,
4218 .alg = CIPHER_ALG_NONE,
4219 .mode = CIPHER_MODE_NONE,
4222 .alg = HASH_ALG_SHA3_384,
4223 .mode = HASH_MODE_HASH,
4227 .type = CRYPTO_ALG_TYPE_AHASH,
4229 .halg.digestsize = SHA3_384_DIGEST_SIZE,
4231 .cra_name = "hmac(sha3-384)",
4232 .cra_driver_name = "hmac-sha3-384-iproc",
4233 .cra_blocksize = SHA3_384_BLOCK_SIZE,
4237 .alg = CIPHER_ALG_NONE,
4238 .mode = CIPHER_MODE_NONE,
4241 .alg = HASH_ALG_SHA3_384,
4242 .mode = HASH_MODE_HMAC,
4246 .type = CRYPTO_ALG_TYPE_AHASH,
4248 .halg.digestsize = SHA3_512_DIGEST_SIZE,
4250 .cra_name = "sha3-512",
4251 .cra_driver_name = "sha3-512-iproc",
4252 .cra_blocksize = SHA3_512_BLOCK_SIZE,
4256 .alg = CIPHER_ALG_NONE,
4257 .mode = CIPHER_MODE_NONE,
4260 .alg = HASH_ALG_SHA3_512,
4261 .mode = HASH_MODE_HASH,
4265 .type = CRYPTO_ALG_TYPE_AHASH,
4267 .halg.digestsize = SHA3_512_DIGEST_SIZE,
4269 .cra_name = "hmac(sha3-512)",
4270 .cra_driver_name = "hmac-sha3-512-iproc",
4271 .cra_blocksize = SHA3_512_BLOCK_SIZE,
4275 .alg = CIPHER_ALG_NONE,
4276 .mode = CIPHER_MODE_NONE,
4279 .alg = HASH_ALG_SHA3_512,
4280 .mode = HASH_MODE_HMAC,
4284 .type = CRYPTO_ALG_TYPE_AHASH,
4286 .halg.digestsize = AES_BLOCK_SIZE,
4288 .cra_name = "xcbc(aes)",
4289 .cra_driver_name = "xcbc-aes-iproc",
4290 .cra_blocksize = AES_BLOCK_SIZE,
4294 .alg = CIPHER_ALG_NONE,
4295 .mode = CIPHER_MODE_NONE,
4298 .alg = HASH_ALG_AES,
4299 .mode = HASH_MODE_XCBC,
4303 .type = CRYPTO_ALG_TYPE_AHASH,
4305 .halg.digestsize = AES_BLOCK_SIZE,
4307 .cra_name = "cmac(aes)",
4308 .cra_driver_name = "cmac-aes-iproc",
4309 .cra_blocksize = AES_BLOCK_SIZE,
4313 .alg = CIPHER_ALG_NONE,
4314 .mode = CIPHER_MODE_NONE,
4317 .alg = HASH_ALG_AES,
4318 .mode = HASH_MODE_CMAC,
4323 static int generic_cra_init(struct crypto_tfm *tfm,
4324 struct iproc_alg_s *cipher_alg)
4326 struct spu_hw *spu = &iproc_priv.spu;
4327 struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
4328 unsigned int blocksize = crypto_tfm_alg_blocksize(tfm);
4330 flow_log("%s()\n", __func__);
4332 ctx->alg = cipher_alg;
4333 ctx->cipher = cipher_alg->cipher_info;
4334 ctx->auth = cipher_alg->auth_info;
4335 ctx->auth_first = cipher_alg->auth_first;
4336 ctx->max_payload = spu->spu_ctx_max_payload(ctx->cipher.alg,
4339 ctx->fallback_cipher = NULL;
4342 ctx->authkeylen = 0;
4344 atomic_inc(&iproc_priv.stream_count);
4345 atomic_inc(&iproc_priv.session_count);
4350 static int ablkcipher_cra_init(struct crypto_tfm *tfm)
4352 struct crypto_alg *alg = tfm->__crt_alg;
4353 struct iproc_alg_s *cipher_alg;
4355 flow_log("%s()\n", __func__);
4357 tfm->crt_ablkcipher.reqsize = sizeof(struct iproc_reqctx_s);
4359 cipher_alg = container_of(alg, struct iproc_alg_s, alg.crypto);
4360 return generic_cra_init(tfm, cipher_alg);
4363 static int ahash_cra_init(struct crypto_tfm *tfm)
4366 struct crypto_alg *alg = tfm->__crt_alg;
4367 struct iproc_alg_s *cipher_alg;
4369 cipher_alg = container_of(__crypto_ahash_alg(alg), struct iproc_alg_s,
4372 err = generic_cra_init(tfm, cipher_alg);
4373 flow_log("%s()\n", __func__);
4376 * export state size has to be < 512 bytes. So don't include msg bufs
4379 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
4380 sizeof(struct iproc_reqctx_s));
4385 static int aead_cra_init(struct crypto_aead *aead)
4387 struct crypto_tfm *tfm = crypto_aead_tfm(aead);
4388 struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
4389 struct crypto_alg *alg = tfm->__crt_alg;
4390 struct aead_alg *aalg = container_of(alg, struct aead_alg, base);
4391 struct iproc_alg_s *cipher_alg = container_of(aalg, struct iproc_alg_s,
4394 int err = generic_cra_init(tfm, cipher_alg);
4396 flow_log("%s()\n", __func__);
4398 crypto_aead_set_reqsize(aead, sizeof(struct iproc_reqctx_s));
4399 ctx->is_esp = false;
4401 ctx->salt_offset = 0;
4403 /* random first IV */
4404 get_random_bytes(ctx->iv, MAX_IV_SIZE);
4405 flow_dump(" iv: ", ctx->iv, MAX_IV_SIZE);
4408 if (alg->cra_flags & CRYPTO_ALG_NEED_FALLBACK) {
4409 flow_log("%s() creating fallback cipher\n", __func__);
4411 ctx->fallback_cipher =
4412 crypto_alloc_aead(alg->cra_name, 0,
4414 CRYPTO_ALG_NEED_FALLBACK);
4415 if (IS_ERR(ctx->fallback_cipher)) {
4416 pr_err("%s() Error: failed to allocate fallback for %s\n",
4417 __func__, alg->cra_name);
4418 return PTR_ERR(ctx->fallback_cipher);
4426 static void generic_cra_exit(struct crypto_tfm *tfm)
4428 atomic_dec(&iproc_priv.session_count);
4431 static void aead_cra_exit(struct crypto_aead *aead)
4433 struct crypto_tfm *tfm = crypto_aead_tfm(aead);
4434 struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
4436 generic_cra_exit(tfm);
4438 if (ctx->fallback_cipher) {
4439 crypto_free_aead(ctx->fallback_cipher);
4440 ctx->fallback_cipher = NULL;
4445 * spu_functions_register() - Specify hardware-specific SPU functions based on
4446 * SPU type read from device tree.
4447 * @dev: device structure
4448 * @spu_type: SPU hardware generation
4449 * @spu_subtype: SPU hardware version
4451 static void spu_functions_register(struct device *dev,
4452 enum spu_spu_type spu_type,
4453 enum spu_spu_subtype spu_subtype)
4455 struct spu_hw *spu = &iproc_priv.spu;
4457 if (spu_type == SPU_TYPE_SPUM) {
4458 dev_dbg(dev, "Registering SPUM functions");
4459 spu->spu_dump_msg_hdr = spum_dump_msg_hdr;
4460 spu->spu_payload_length = spum_payload_length;
4461 spu->spu_response_hdr_len = spum_response_hdr_len;
4462 spu->spu_hash_pad_len = spum_hash_pad_len;
4463 spu->spu_gcm_ccm_pad_len = spum_gcm_ccm_pad_len;
4464 spu->spu_assoc_resp_len = spum_assoc_resp_len;
4465 spu->spu_aead_ivlen = spum_aead_ivlen;
4466 spu->spu_hash_type = spum_hash_type;
4467 spu->spu_digest_size = spum_digest_size;
4468 spu->spu_create_request = spum_create_request;
4469 spu->spu_cipher_req_init = spum_cipher_req_init;
4470 spu->spu_cipher_req_finish = spum_cipher_req_finish;
4471 spu->spu_request_pad = spum_request_pad;
4472 spu->spu_tx_status_len = spum_tx_status_len;
4473 spu->spu_rx_status_len = spum_rx_status_len;
4474 spu->spu_status_process = spum_status_process;
4475 spu->spu_xts_tweak_in_payload = spum_xts_tweak_in_payload;
4476 spu->spu_ccm_update_iv = spum_ccm_update_iv;
4477 spu->spu_wordalign_padlen = spum_wordalign_padlen;
4478 if (spu_subtype == SPU_SUBTYPE_SPUM_NS2)
4479 spu->spu_ctx_max_payload = spum_ns2_ctx_max_payload;
4481 spu->spu_ctx_max_payload = spum_nsp_ctx_max_payload;
4483 dev_dbg(dev, "Registering SPU2 functions");
4484 spu->spu_dump_msg_hdr = spu2_dump_msg_hdr;
4485 spu->spu_ctx_max_payload = spu2_ctx_max_payload;
4486 spu->spu_payload_length = spu2_payload_length;
4487 spu->spu_response_hdr_len = spu2_response_hdr_len;
4488 spu->spu_hash_pad_len = spu2_hash_pad_len;
4489 spu->spu_gcm_ccm_pad_len = spu2_gcm_ccm_pad_len;
4490 spu->spu_assoc_resp_len = spu2_assoc_resp_len;
4491 spu->spu_aead_ivlen = spu2_aead_ivlen;
4492 spu->spu_hash_type = spu2_hash_type;
4493 spu->spu_digest_size = spu2_digest_size;
4494 spu->spu_create_request = spu2_create_request;
4495 spu->spu_cipher_req_init = spu2_cipher_req_init;
4496 spu->spu_cipher_req_finish = spu2_cipher_req_finish;
4497 spu->spu_request_pad = spu2_request_pad;
4498 spu->spu_tx_status_len = spu2_tx_status_len;
4499 spu->spu_rx_status_len = spu2_rx_status_len;
4500 spu->spu_status_process = spu2_status_process;
4501 spu->spu_xts_tweak_in_payload = spu2_xts_tweak_in_payload;
4502 spu->spu_ccm_update_iv = spu2_ccm_update_iv;
4503 spu->spu_wordalign_padlen = spu2_wordalign_padlen;
4508 * spu_mb_init() - Initialize mailbox client. Request ownership of a mailbox
4509 * channel for the SPU being probed.
4510 * @dev: SPU driver device structure
4512 * Return: 0 if successful
4515 static int spu_mb_init(struct device *dev)
4517 struct mbox_client *mcl = &iproc_priv.mcl;
4520 iproc_priv.mbox = devm_kcalloc(dev, iproc_priv.spu.num_chan,
4521 sizeof(struct mbox_chan *), GFP_KERNEL);
4522 if (!iproc_priv.mbox)
4526 mcl->tx_block = false;
4528 mcl->knows_txdone = true;
4529 mcl->rx_callback = spu_rx_callback;
4530 mcl->tx_done = NULL;
4532 for (i = 0; i < iproc_priv.spu.num_chan; i++) {
4533 iproc_priv.mbox[i] = mbox_request_channel(mcl, i);
4534 if (IS_ERR(iproc_priv.mbox[i])) {
4535 err = (int)PTR_ERR(iproc_priv.mbox[i]);
4537 "Mbox channel %d request failed with err %d",
4539 iproc_priv.mbox[i] = NULL;
4546 for (i = 0; i < iproc_priv.spu.num_chan; i++) {
4547 if (iproc_priv.mbox[i])
4548 mbox_free_channel(iproc_priv.mbox[i]);
4554 static void spu_mb_release(struct platform_device *pdev)
4558 for (i = 0; i < iproc_priv.spu.num_chan; i++)
4559 mbox_free_channel(iproc_priv.mbox[i]);
4562 static void spu_counters_init(void)
4567 atomic_set(&iproc_priv.session_count, 0);
4568 atomic_set(&iproc_priv.stream_count, 0);
4569 atomic_set(&iproc_priv.next_chan, (int)iproc_priv.spu.num_chan);
4570 atomic64_set(&iproc_priv.bytes_in, 0);
4571 atomic64_set(&iproc_priv.bytes_out, 0);
4572 for (i = 0; i < SPU_OP_NUM; i++) {
4573 atomic_set(&iproc_priv.op_counts[i], 0);
4574 atomic_set(&iproc_priv.setkey_cnt[i], 0);
4576 for (i = 0; i < CIPHER_ALG_LAST; i++)
4577 for (j = 0; j < CIPHER_MODE_LAST; j++)
4578 atomic_set(&iproc_priv.cipher_cnt[i][j], 0);
4580 for (i = 0; i < HASH_ALG_LAST; i++) {
4581 atomic_set(&iproc_priv.hash_cnt[i], 0);
4582 atomic_set(&iproc_priv.hmac_cnt[i], 0);
4584 for (i = 0; i < AEAD_TYPE_LAST; i++)
4585 atomic_set(&iproc_priv.aead_cnt[i], 0);
4587 atomic_set(&iproc_priv.mb_no_spc, 0);
4588 atomic_set(&iproc_priv.mb_send_fail, 0);
4589 atomic_set(&iproc_priv.bad_icv, 0);
4592 static int spu_register_ablkcipher(struct iproc_alg_s *driver_alg)
4594 struct spu_hw *spu = &iproc_priv.spu;
4595 struct crypto_alg *crypto = &driver_alg->alg.crypto;
4598 /* SPU2 does not support RC4 */
4599 if ((driver_alg->cipher_info.alg == CIPHER_ALG_RC4) &&
4600 (spu->spu_type == SPU_TYPE_SPU2))
4603 crypto->cra_module = THIS_MODULE;
4604 crypto->cra_priority = cipher_pri;
4605 crypto->cra_alignmask = 0;
4606 crypto->cra_ctxsize = sizeof(struct iproc_ctx_s);
4608 crypto->cra_init = ablkcipher_cra_init;
4609 crypto->cra_exit = generic_cra_exit;
4610 crypto->cra_type = &crypto_ablkcipher_type;
4611 crypto->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
4612 CRYPTO_ALG_KERN_DRIVER_ONLY;
4614 crypto->cra_ablkcipher.setkey = ablkcipher_setkey;
4615 crypto->cra_ablkcipher.encrypt = ablkcipher_encrypt;
4616 crypto->cra_ablkcipher.decrypt = ablkcipher_decrypt;
4618 err = crypto_register_alg(crypto);
4619 /* Mark alg as having been registered, if successful */
4621 driver_alg->registered = true;
4622 pr_debug(" registered ablkcipher %s\n", crypto->cra_driver_name);
4626 static int spu_register_ahash(struct iproc_alg_s *driver_alg)
4628 struct spu_hw *spu = &iproc_priv.spu;
4629 struct ahash_alg *hash = &driver_alg->alg.hash;
4632 /* AES-XCBC is the only AES hash type currently supported on SPU-M */
4633 if ((driver_alg->auth_info.alg == HASH_ALG_AES) &&
4634 (driver_alg->auth_info.mode != HASH_MODE_XCBC) &&
4635 (spu->spu_type == SPU_TYPE_SPUM))
4638 /* SHA3 algorithm variants are not registered for SPU-M or SPU2. */
4639 if ((driver_alg->auth_info.alg >= HASH_ALG_SHA3_224) &&
4640 (spu->spu_subtype != SPU_SUBTYPE_SPU2_V2))
4643 hash->halg.base.cra_module = THIS_MODULE;
4644 hash->halg.base.cra_priority = hash_pri;
4645 hash->halg.base.cra_alignmask = 0;
4646 hash->halg.base.cra_ctxsize = sizeof(struct iproc_ctx_s);
4647 hash->halg.base.cra_init = ahash_cra_init;
4648 hash->halg.base.cra_exit = generic_cra_exit;
4649 hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC;
4650 hash->halg.statesize = sizeof(struct spu_hash_export_s);
4652 if (driver_alg->auth_info.mode != HASH_MODE_HMAC) {
4653 hash->init = ahash_init;
4654 hash->update = ahash_update;
4655 hash->final = ahash_final;
4656 hash->finup = ahash_finup;
4657 hash->digest = ahash_digest;
4658 if ((driver_alg->auth_info.alg == HASH_ALG_AES) &&
4659 ((driver_alg->auth_info.mode == HASH_MODE_XCBC) ||
4660 (driver_alg->auth_info.mode == HASH_MODE_CMAC))) {
4661 hash->setkey = ahash_setkey;
4664 hash->setkey = ahash_hmac_setkey;
4665 hash->init = ahash_hmac_init;
4666 hash->update = ahash_hmac_update;
4667 hash->final = ahash_hmac_final;
4668 hash->finup = ahash_hmac_finup;
4669 hash->digest = ahash_hmac_digest;
4671 hash->export = ahash_export;
4672 hash->import = ahash_import;
4674 err = crypto_register_ahash(hash);
4675 /* Mark alg as having been registered, if successful */
4677 driver_alg->registered = true;
4678 pr_debug(" registered ahash %s\n",
4679 hash->halg.base.cra_driver_name);
4683 static int spu_register_aead(struct iproc_alg_s *driver_alg)
4685 struct aead_alg *aead = &driver_alg->alg.aead;
4688 aead->base.cra_module = THIS_MODULE;
4689 aead->base.cra_priority = aead_pri;
4690 aead->base.cra_alignmask = 0;
4691 aead->base.cra_ctxsize = sizeof(struct iproc_ctx_s);
4693 aead->base.cra_flags |= CRYPTO_ALG_ASYNC;
4694 /* setkey set in alg initialization */
4695 aead->setauthsize = aead_setauthsize;
4696 aead->encrypt = aead_encrypt;
4697 aead->decrypt = aead_decrypt;
4698 aead->init = aead_cra_init;
4699 aead->exit = aead_cra_exit;
4701 err = crypto_register_aead(aead);
4702 /* Mark alg as having been registered, if successful */
4704 driver_alg->registered = true;
4705 pr_debug(" registered aead %s\n", aead->base.cra_driver_name);
4709 /* register crypto algorithms the device supports */
4710 static int spu_algs_register(struct device *dev)
4715 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4716 switch (driver_algs[i].type) {
4717 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4718 err = spu_register_ablkcipher(&driver_algs[i]);
4720 case CRYPTO_ALG_TYPE_AHASH:
4721 err = spu_register_ahash(&driver_algs[i]);
4723 case CRYPTO_ALG_TYPE_AEAD:
4724 err = spu_register_aead(&driver_algs[i]);
4728 "iproc-crypto: unknown alg type: %d",
4729 driver_algs[i].type);
4734 dev_err(dev, "alg registration failed with error %d\n",
4743 for (j = 0; j < i; j++) {
4744 /* Skip any algorithm not registered */
4745 if (!driver_algs[j].registered)
4747 switch (driver_algs[j].type) {
4748 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4749 crypto_unregister_alg(&driver_algs[j].alg.crypto);
4750 driver_algs[j].registered = false;
4752 case CRYPTO_ALG_TYPE_AHASH:
4753 crypto_unregister_ahash(&driver_algs[j].alg.hash);
4754 driver_algs[j].registered = false;
4756 case CRYPTO_ALG_TYPE_AEAD:
4757 crypto_unregister_aead(&driver_algs[j].alg.aead);
4758 driver_algs[j].registered = false;
4765 /* ==================== Kernel Platform API ==================== */
4767 static struct spu_type_subtype spum_ns2_types = {
4768 SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NS2
4771 static struct spu_type_subtype spum_nsp_types = {
4772 SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NSP
4775 static struct spu_type_subtype spu2_types = {
4776 SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V1
4779 static struct spu_type_subtype spu2_v2_types = {
4780 SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V2
4783 static const struct of_device_id bcm_spu_dt_ids[] = {
4785 .compatible = "brcm,spum-crypto",
4786 .data = &spum_ns2_types,
4789 .compatible = "brcm,spum-nsp-crypto",
4790 .data = &spum_nsp_types,
4793 .compatible = "brcm,spu2-crypto",
4794 .data = &spu2_types,
4797 .compatible = "brcm,spu2-v2-crypto",
4798 .data = &spu2_v2_types,
4803 MODULE_DEVICE_TABLE(of, bcm_spu_dt_ids);
4805 static int spu_dt_read(struct platform_device *pdev)
4807 struct device *dev = &pdev->dev;
4808 struct spu_hw *spu = &iproc_priv.spu;
4809 struct resource *spu_ctrl_regs;
4810 const struct spu_type_subtype *matched_spu_type;
4811 struct device_node *dn = pdev->dev.of_node;
4814 /* Count number of mailbox channels */
4815 spu->num_chan = of_count_phandle_with_args(dn, "mboxes", "#mbox-cells");
4817 matched_spu_type = of_device_get_match_data(dev);
4818 if (!matched_spu_type) {
4819 dev_err(&pdev->dev, "Failed to match device\n");
4823 spu->spu_type = matched_spu_type->type;
4824 spu->spu_subtype = matched_spu_type->subtype;
4827 for (i = 0; (i < MAX_SPUS) && ((spu_ctrl_regs =
4828 platform_get_resource(pdev, IORESOURCE_MEM, i)) != NULL); i++) {
4830 spu->reg_vbase[i] = devm_ioremap_resource(dev, spu_ctrl_regs);
4831 if (IS_ERR(spu->reg_vbase[i])) {
4832 err = PTR_ERR(spu->reg_vbase[i]);
4833 dev_err(&pdev->dev, "Failed to map registers: %d\n",
4835 spu->reg_vbase[i] = NULL;
4840 dev_dbg(dev, "Device has %d SPUs", spu->num_spu);
4845 int bcm_spu_probe(struct platform_device *pdev)
4847 struct device *dev = &pdev->dev;
4848 struct spu_hw *spu = &iproc_priv.spu;
4851 iproc_priv.pdev = pdev;
4852 platform_set_drvdata(iproc_priv.pdev,
4855 err = spu_dt_read(pdev);
4859 err = spu_mb_init(&pdev->dev);
4863 if (spu->spu_type == SPU_TYPE_SPUM)
4864 iproc_priv.bcm_hdr_len = 8;
4865 else if (spu->spu_type == SPU_TYPE_SPU2)
4866 iproc_priv.bcm_hdr_len = 0;
4868 spu_functions_register(&pdev->dev, spu->spu_type, spu->spu_subtype);
4870 spu_counters_init();
4872 spu_setup_debugfs();
4874 err = spu_algs_register(dev);
4883 spu_mb_release(pdev);
4884 dev_err(dev, "%s failed with error %d.\n", __func__, err);
4889 int bcm_spu_remove(struct platform_device *pdev)
4892 struct device *dev = &pdev->dev;
4895 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4897 * Not all algorithms were registered, depending on whether
4898 * hardware is SPU or SPU2. So here we make sure to skip
4899 * those algorithms that were not previously registered.
4901 if (!driver_algs[i].registered)
4904 switch (driver_algs[i].type) {
4905 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4906 crypto_unregister_alg(&driver_algs[i].alg.crypto);
4907 dev_dbg(dev, " unregistered cipher %s\n",
4908 driver_algs[i].alg.crypto.cra_driver_name);
4909 driver_algs[i].registered = false;
4911 case CRYPTO_ALG_TYPE_AHASH:
4912 crypto_unregister_ahash(&driver_algs[i].alg.hash);
4913 cdn = driver_algs[i].alg.hash.halg.base.cra_driver_name;
4914 dev_dbg(dev, " unregistered hash %s\n", cdn);
4915 driver_algs[i].registered = false;
4917 case CRYPTO_ALG_TYPE_AEAD:
4918 crypto_unregister_aead(&driver_algs[i].alg.aead);
4919 dev_dbg(dev, " unregistered aead %s\n",
4920 driver_algs[i].alg.aead.base.cra_driver_name);
4921 driver_algs[i].registered = false;
4926 spu_mb_release(pdev);
4930 /* ===== Kernel Module API ===== */
4932 static struct platform_driver bcm_spu_pdriver = {
4934 .name = "brcm-spu-crypto",
4935 .of_match_table = of_match_ptr(bcm_spu_dt_ids),
4937 .probe = bcm_spu_probe,
4938 .remove = bcm_spu_remove,
4940 module_platform_driver(bcm_spu_pdriver);
4942 MODULE_AUTHOR("Rob Rice <rob.rice@broadcom.com>");
4943 MODULE_DESCRIPTION("Broadcom symmetric crypto offload driver");
4944 MODULE_LICENSE("GPL v2");