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-rw-r--r--recipes-kernel/cryptodev/sdk_patches/0014-remove-redundant-data-copy-for-pkc-operations.patch494
1 files changed, 494 insertions, 0 deletions
diff --git a/recipes-kernel/cryptodev/sdk_patches/0014-remove-redundant-data-copy-for-pkc-operations.patch b/recipes-kernel/cryptodev/sdk_patches/0014-remove-redundant-data-copy-for-pkc-operations.patch
new file mode 100644
index 000000000..58d37fa88
--- /dev/null
+++ b/recipes-kernel/cryptodev/sdk_patches/0014-remove-redundant-data-copy-for-pkc-operations.patch
@@ -0,0 +1,494 @@
1From a4d88e5379ddb7d9bceac3141f508b8173d1e902 Mon Sep 17 00:00:00 2001
2From: Cristian Stoica <cristian.stoica@freescale.com>
3Date: Mon, 23 Feb 2015 12:14:07 +0200
4Subject: [PATCH 14/38] remove redundant data copy for pkc operations
5
6This patch removes a copy of a pkc request that was
7allocated on the hot-path. The copy was not necessary
8and was just slowing things down.
9
10Change-Id: I3ad85f78c188f100ab9fc03a5777bb704a9dcb63
11Signed-off-by: Cristian Stoica <cristian.stoica@freescale.com>
12Reviewed-on: http://git.am.freescale.net:8181/34223
13---
14 cryptlib.c | 49 +++----------------
15 cryptlib.h | 3 +-
16 ioctl.c | 17 +++----
17 main.c | 162 +++++++++++++++++++++++++++++++++++++------------------------
18 4 files changed, 113 insertions(+), 118 deletions(-)
19
20diff --git a/cryptlib.c b/cryptlib.c
21index 21e691b..5882a30 100644
22--- a/cryptlib.c
23+++ b/cryptlib.c
24@@ -436,59 +436,22 @@ int cryptodev_hash_final(struct hash_data *hdata, void *output)
25
26 int cryptodev_pkc_offload(struct cryptodev_pkc *pkc)
27 {
28- int ret = 0;
29- struct pkc_request *pkc_req = &pkc->req, *pkc_requested;
30-
31- switch (pkc_req->type) {
32- case RSA_KEYGEN:
33- case RSA_PUB:
34- case RSA_PRIV_FORM1:
35- case RSA_PRIV_FORM2:
36- case RSA_PRIV_FORM3:
37- pkc->s = crypto_alloc_pkc("pkc(rsa)", CRYPTO_ALG_TYPE_PKC_RSA, 0);
38- break;
39- case DSA_SIGN:
40- case DSA_VERIFY:
41- case ECDSA_SIGN:
42- case ECDSA_VERIFY:
43- case DLC_KEYGEN:
44- case ECC_KEYGEN:
45- pkc->s = crypto_alloc_pkc("pkc(dsa)", CRYPTO_ALG_TYPE_PKC_DSA, 0);
46- break;
47- case DH_COMPUTE_KEY:
48- case ECDH_COMPUTE_KEY:
49- pkc->s = crypto_alloc_pkc("pkc(dh)", CRYPTO_ALG_TYPE_PKC_DH, 0);
50- break;
51- default:
52- return -EINVAL;
53- }
54-
55- if (IS_ERR_OR_NULL(pkc->s))
56- return -EINVAL;
57+ int ret;
58
59 init_completion(&pkc->result.completion);
60- pkc_requested = pkc_request_alloc(pkc->s, GFP_KERNEL);
61-
62- if (unlikely(IS_ERR_OR_NULL(pkc_requested))) {
63- ret = -ENOMEM;
64- goto error;
65- }
66- pkc_requested->type = pkc_req->type;
67- pkc_requested->curve_type = pkc_req->curve_type;
68- memcpy(&pkc_requested->req_u, &pkc_req->req_u, sizeof(pkc_req->req_u));
69- pkc_request_set_callback(pkc_requested, CRYPTO_TFM_REQ_MAY_BACKLOG,
70+ pkc_request_set_callback(pkc->req, CRYPTO_TFM_REQ_MAY_BACKLOG,
71 cryptodev_complete_asym, pkc);
72- ret = crypto_pkc_op(pkc_requested);
73+ ret = crypto_pkc_op(pkc->req);
74 if (ret != -EINPROGRESS && ret != 0)
75- goto error2;
76+ goto error;
77
78 if (pkc->type == SYNCHRONOUS)
79 ret = waitfor(&pkc->result, ret);
80
81 return ret;
82-error2:
83- kfree(pkc_requested);
84+
85 error:
86+ kfree(pkc->req);
87 crypto_free_pkc(pkc->s);
88 return ret;
89 }
90diff --git a/cryptlib.h b/cryptlib.h
91index 7ffa54c..4fac0c8 100644
92--- a/cryptlib.h
93+++ b/cryptlib.h
94@@ -110,8 +110,7 @@ struct cryptodev_pkc {
95 struct crypto_pkc *s; /* Transform pointer from CryptoAPI */
96 struct cryptodev_result result; /* Result to be updated by
97 completion handler */
98- struct pkc_request req; /* PKC request structure allocated
99- from CryptoAPI */
100+ struct pkc_request *req; /* PKC request allocated from CryptoAPI */
101 enum offload_type type; /* Synchronous Vs Asynchronous request */
102 /*
103 * cookie used for transfering tranparent information from async
104diff --git a/ioctl.c b/ioctl.c
105index ee0486c..797b73c 100644
106--- a/ioctl.c
107+++ b/ioctl.c
108@@ -708,26 +708,25 @@ static int crypto_async_fetch_asym(struct cryptodev_pkc *pkc)
109 int ret = 0;
110 struct kernel_crypt_kop *kop = &pkc->kop;
111 struct crypt_kop *ckop = &kop->kop;
112- struct pkc_request *pkc_req = &pkc->req;
113
114 switch (ckop->crk_op) {
115 case CRK_MOD_EXP:
116 {
117- struct rsa_pub_req_s *rsa_req = &pkc_req->req_u.rsa_pub_req;
118+ struct rsa_pub_req_s *rsa_req = &pkc->req->req_u.rsa_pub_req;
119 copy_to_user(ckop->crk_param[3].crp_p, rsa_req->g, rsa_req->g_len);
120 }
121 break;
122 case CRK_MOD_EXP_CRT:
123 {
124- struct rsa_priv_frm3_req_s *rsa_req = &pkc_req->req_u.rsa_priv_f3;
125+ struct rsa_priv_frm3_req_s *rsa_req = &pkc->req->req_u.rsa_priv_f3;
126 copy_to_user(ckop->crk_param[6].crp_p, rsa_req->f, rsa_req->f_len);
127 }
128 break;
129 case CRK_DSA_SIGN:
130 {
131- struct dsa_sign_req_s *dsa_req = &pkc_req->req_u.dsa_sign;
132+ struct dsa_sign_req_s *dsa_req = &pkc->req->req_u.dsa_sign;
133
134- if (pkc_req->type == ECDSA_SIGN) {
135+ if (pkc->req->type == ECDSA_SIGN) {
136 copy_to_user(ckop->crk_param[6].crp_p, dsa_req->c, dsa_req->d_len);
137 copy_to_user(ckop->crk_param[7].crp_p, dsa_req->d, dsa_req->d_len);
138 } else {
139@@ -740,8 +739,8 @@ static int crypto_async_fetch_asym(struct cryptodev_pkc *pkc)
140 break;
141 case CRK_DH_COMPUTE_KEY:
142 {
143- struct dh_key_req_s *dh_req = &pkc_req->req_u.dh_req;
144- if (pkc_req->type == ECDH_COMPUTE_KEY)
145+ struct dh_key_req_s *dh_req = &pkc->req->req_u.dh_req;
146+ if (pkc->req->type == ECDH_COMPUTE_KEY)
147 copy_to_user(ckop->crk_param[4].crp_p, dh_req->z, dh_req->z_len);
148 else
149 copy_to_user(ckop->crk_param[3].crp_p, dh_req->z, dh_req->z_len);
150@@ -750,9 +749,9 @@ static int crypto_async_fetch_asym(struct cryptodev_pkc *pkc)
151 case CRK_DSA_GENERATE_KEY:
152 case CRK_DH_GENERATE_KEY:
153 {
154- struct keygen_req_s *key_req = &pkc_req->req_u.keygen;
155+ struct keygen_req_s *key_req = &pkc->req->req_u.keygen;
156
157- if (pkc_req->type == ECC_KEYGEN) {
158+ if (pkc->req->type == ECC_KEYGEN) {
159 copy_to_user(ckop->crk_param[4].crp_p, key_req->pub_key,
160 key_req->pub_key_len);
161 copy_to_user(ckop->crk_param[5].crp_p, key_req->priv_key,
162diff --git a/main.c b/main.c
163index af66553..ed1c69a 100644
164--- a/main.c
165+++ b/main.c
166@@ -186,8 +186,7 @@ int crypto_kop_dsasign(struct cryptodev_pkc *pkc)
167 {
168 struct kernel_crypt_kop *kop = &pkc->kop;
169 struct crypt_kop *cop = &kop->kop;
170- struct pkc_request *pkc_req = &pkc->req;
171- struct dsa_sign_req_s *dsa_req = &pkc_req->req_u.dsa_sign;
172+ struct dsa_sign_req_s *dsa_req = &pkc->req->req_u.dsa_sign;
173 int rc, buf_size;
174 uint8_t *buf;
175
176@@ -210,10 +209,7 @@ int crypto_kop_dsasign(struct cryptodev_pkc *pkc)
177 if (cop->crk_iparams == 6) {
178 dsa_req->ab_len = (cop->crk_param[5].crp_nbits + 7)/8;
179 buf_size += dsa_req->ab_len;
180- pkc_req->type = ECDSA_SIGN;
181- pkc_req->curve_type = cop->curve_type;
182- } else {
183- pkc_req->type = DSA_SIGN;
184+ pkc->req->curve_type = cop->curve_type;
185 }
186
187 buf = kmalloc(buf_size, GFP_DMA);
188@@ -269,7 +265,6 @@ int crypto_kop_dsaverify(struct cryptodev_pkc *pkc)
189 {
190 struct kernel_crypt_kop *kop = &pkc->kop;
191 struct crypt_kop *cop = &kop->kop;
192- struct pkc_request *pkc_req;
193 struct dsa_verify_req_s *dsa_req;
194 int rc, buf_size;
195 uint8_t *buf;
196@@ -281,8 +276,7 @@ int crypto_kop_dsaverify(struct cryptodev_pkc *pkc)
197 !cop->crk_param[7].crp_nbits))
198 return -EINVAL;
199
200- pkc_req = &pkc->req;
201- dsa_req = &pkc_req->req_u.dsa_verify;
202+ dsa_req = &pkc->req->req_u.dsa_verify;
203 dsa_req->m_len = (cop->crk_param[0].crp_nbits + 7)/8;
204 dsa_req->q_len = (cop->crk_param[1].crp_nbits + 7)/8;
205 dsa_req->r_len = (cop->crk_param[2].crp_nbits + 7)/8;
206@@ -295,10 +289,7 @@ int crypto_kop_dsaverify(struct cryptodev_pkc *pkc)
207 if (cop->crk_iparams == 8) {
208 dsa_req->ab_len = (cop->crk_param[5].crp_nbits + 7)/8;
209 buf_size += dsa_req->ab_len;
210- pkc_req->type = ECDSA_VERIFY;
211- pkc_req->curve_type = cop->curve_type;
212- } else {
213- pkc_req->type = DSA_VERIFY;
214+ pkc->req->curve_type = cop->curve_type;
215 }
216
217 buf = kmalloc(buf_size, GFP_DMA);
218@@ -351,7 +342,6 @@ int crypto_kop_rsa_keygen(struct cryptodev_pkc *pkc)
219 {
220 struct kernel_crypt_kop *kop = &pkc->kop;
221 struct crypt_kop *cop = &kop->kop;
222- struct pkc_request *pkc_req;
223 struct rsa_keygen_req_s *key_req;
224 int rc, buf_size;
225 uint8_t *buf;
226@@ -362,9 +352,7 @@ int crypto_kop_rsa_keygen(struct cryptodev_pkc *pkc)
227 !cop->crk_param[6].crp_nbits)
228 return -EINVAL;
229
230- pkc_req = &pkc->req;
231- pkc_req->type = RSA_KEYGEN;
232- key_req = &pkc_req->req_u.rsa_keygen;
233+ key_req = &pkc->req->req_u.rsa_keygen;
234 key_req->n_len = (cop->crk_param[2].crp_nbits + 7)/8;
235 key_req->p_len = (cop->crk_param[0].crp_nbits + 7) / 8;
236 key_req->q_len = (cop->crk_param[1].crp_nbits + 7) / 8;
237@@ -427,7 +415,6 @@ int crypto_kop_keygen(struct cryptodev_pkc *pkc)
238 {
239 struct kernel_crypt_kop *kop = &pkc->kop;
240 struct crypt_kop *cop = &kop->kop;
241- struct pkc_request *pkc_req;
242 struct keygen_req_s *key_req;
243 int rc, buf_size;
244 uint8_t *buf;
245@@ -437,8 +424,7 @@ int crypto_kop_keygen(struct cryptodev_pkc *pkc)
246 !cop->crk_param[4].crp_nbits)
247 return -EINVAL;
248
249- pkc_req = &pkc->req;
250- key_req = &pkc_req->req_u.keygen;
251+ key_req = &pkc->req->req_u.keygen;
252 key_req->q_len = (cop->crk_param[0].crp_nbits + 7)/8;
253 key_req->r_len = (cop->crk_param[1].crp_nbits + 7)/8;
254 key_req->g_len = (cop->crk_param[2].crp_nbits + 7)/8;
255@@ -447,7 +433,6 @@ int crypto_kop_keygen(struct cryptodev_pkc *pkc)
256 key_req->priv_key_len = (cop->crk_param[4].crp_nbits + 7)/8;
257 buf_size = key_req->q_len + key_req->r_len + key_req->g_len +
258 key_req->pub_key_len + key_req->priv_key_len;
259- pkc_req->type = DLC_KEYGEN;
260 } else {
261 key_req->ab_len = (cop->crk_param[3].crp_nbits + 7)/8;
262 key_req->pub_key_len = (cop->crk_param[4].crp_nbits + 7)/8;
263@@ -455,8 +440,7 @@ int crypto_kop_keygen(struct cryptodev_pkc *pkc)
264 buf_size = key_req->q_len + key_req->r_len + key_req->g_len +
265 key_req->pub_key_len + key_req->priv_key_len +
266 key_req->ab_len;
267- pkc_req->type = ECC_KEYGEN;
268- pkc_req->curve_type = cop->curve_type;
269+ pkc->req->curve_type = cop->curve_type;
270 }
271
272 buf = kmalloc(buf_size, GFP_DMA);
273@@ -508,26 +492,22 @@ int crypto_kop_dh_key(struct cryptodev_pkc *pkc)
274 {
275 struct kernel_crypt_kop *kop = &pkc->kop;
276 struct crypt_kop *cop = &kop->kop;
277- struct pkc_request *pkc_req;
278 struct dh_key_req_s *dh_req;
279 int buf_size;
280 uint8_t *buf;
281 int rc = -EINVAL;
282
283- pkc_req = &pkc->req;
284- dh_req = &pkc_req->req_u.dh_req;
285+ dh_req = &pkc->req->req_u.dh_req;
286 dh_req->s_len = (cop->crk_param[0].crp_nbits + 7)/8;
287 dh_req->pub_key_len = (cop->crk_param[1].crp_nbits + 7)/8;
288 dh_req->q_len = (cop->crk_param[2].crp_nbits + 7)/8;
289 buf_size = dh_req->q_len + dh_req->pub_key_len + dh_req->s_len;
290 if (cop->crk_iparams == 4) {
291- pkc_req->type = ECDH_COMPUTE_KEY;
292 dh_req->ab_len = (cop->crk_param[3].crp_nbits + 7)/8;
293 dh_req->z_len = (cop->crk_param[4].crp_nbits + 7)/8;
294 buf_size += dh_req->ab_len;
295 } else {
296 dh_req->z_len = (cop->crk_param[3].crp_nbits + 7)/8;
297- pkc_req->type = DH_COMPUTE_KEY;
298 }
299 buf_size += dh_req->z_len;
300 buf = kmalloc(buf_size, GFP_DMA);
301@@ -539,7 +519,7 @@ int crypto_kop_dh_key(struct cryptodev_pkc *pkc)
302 dh_req->z = dh_req->pub_key + dh_req->pub_key_len;
303 if (cop->crk_iparams == 4) {
304 dh_req->ab = dh_req->z + dh_req->z_len;
305- pkc_req->curve_type = cop->curve_type;
306+ pkc->req->curve_type = cop->curve_type;
307 copy_from_user(dh_req->ab, cop->crk_param[3].crp_p,
308 dh_req->ab_len);
309 }
310@@ -573,7 +553,6 @@ int crypto_modexp_crt(struct cryptodev_pkc *pkc)
311 {
312 struct kernel_crypt_kop *kop = &pkc->kop;
313 struct crypt_kop *cop = &kop->kop;
314- struct pkc_request *pkc_req;
315 struct rsa_priv_frm3_req_s *rsa_req;
316 int rc;
317 uint8_t *buf;
318@@ -583,9 +562,7 @@ int crypto_modexp_crt(struct cryptodev_pkc *pkc)
319 !cop->crk_param[4].crp_nbits || !cop->crk_param[5].crp_nbits)
320 return -EINVAL;
321
322- pkc_req = &pkc->req;
323- pkc_req->type = RSA_PRIV_FORM3;
324- rsa_req = &pkc_req->req_u.rsa_priv_f3;
325+ rsa_req = &pkc->req->req_u.rsa_priv_f3;
326 rsa_req->p_len = (cop->crk_param[0].crp_nbits + 7)/8;
327 rsa_req->q_len = (cop->crk_param[1].crp_nbits + 7)/8;
328 rsa_req->g_len = (cop->crk_param[2].crp_nbits + 7)/8;
329@@ -632,7 +609,6 @@ err:
330
331 int crypto_bn_modexp(struct cryptodev_pkc *pkc)
332 {
333- struct pkc_request *pkc_req;
334 struct rsa_pub_req_s *rsa_req;
335 int rc;
336 struct kernel_crypt_kop *kop = &pkc->kop;
337@@ -643,9 +619,7 @@ int crypto_bn_modexp(struct cryptodev_pkc *pkc)
338 !cop->crk_param[2].crp_nbits || !cop->crk_param[3].crp_nbits)
339 return -EINVAL;
340
341- pkc_req = &pkc->req;
342- pkc_req->type = RSA_PUB;
343- rsa_req = &pkc_req->req_u.rsa_pub_req;
344+ rsa_req = &pkc->req->req_u.rsa_pub_req;
345 rsa_req->f_len = (cop->crk_param[0].crp_nbits + 7)/8;
346 rsa_req->e_len = (cop->crk_param[1].crp_nbits + 7)/8;
347 rsa_req->n_len = (cop->crk_param[2].crp_nbits + 7)/8;
348@@ -680,56 +654,116 @@ err:
349 return rc;
350 }
351
352+static struct {
353+ char *alg_name;
354+ u32 type;
355+ u32 mask;
356+} pkc_alg_list[] = {
357+ {"pkc(rsa)", CRYPTO_ALG_TYPE_PKC_RSA, 0},
358+ {"pkc(dsa)", CRYPTO_ALG_TYPE_PKC_DSA, 0},
359+ {"pkc(dh)", CRYPTO_ALG_TYPE_PKC_DH, 0},
360+};
361+
362 int crypto_run_asym(struct cryptodev_pkc *pkc)
363 {
364- int ret = -EINVAL;
365+ int err = -EINVAL;
366+ int id;
367 struct kernel_crypt_kop *kop = &pkc->kop;
368+ enum pkc_req_type pkc_req_type;
369+ int (*call_next_action)(struct cryptodev_pkc *pkc);
370
371 switch (kop->kop.crk_op) {
372 case CRK_MOD_EXP:
373 if (kop->kop.crk_iparams != 3 && kop->kop.crk_oparams != 1)
374- goto err;
375-
376- ret = crypto_bn_modexp(pkc);
377+ return err;
378+ pkc_req_type = RSA_PUB;
379+ id = 0;
380+ call_next_action = crypto_bn_modexp;
381 break;
382 case CRK_MOD_EXP_CRT:
383 if (kop->kop.crk_iparams != 6 && kop->kop.crk_oparams != 1)
384- goto err;
385-
386- ret = crypto_modexp_crt(pkc);
387+ return err;
388+ pkc_req_type = RSA_PRIV_FORM3;
389+ id = 0;
390+ call_next_action = crypto_modexp_crt;
391 break;
392 case CRK_DSA_SIGN:
393- if ((kop->kop.crk_iparams != 5 && kop->kop.crk_iparams != 6) ||
394- kop->kop.crk_oparams != 2)
395- goto err;
396-
397- ret = crypto_kop_dsasign(pkc);
398+ if (kop->kop.crk_oparams != 2)
399+ return err;
400+ else if (kop->kop.crk_iparams == 5)
401+ pkc_req_type = DSA_SIGN;
402+ else if (kop->kop.crk_iparams == 6)
403+ pkc_req_type = ECDSA_SIGN;
404+ else
405+ return err;
406+ id = 1;
407+ call_next_action = crypto_kop_dsasign;
408 break;
409 case CRK_DSA_VERIFY:
410- if ((kop->kop.crk_iparams != 7 && kop->kop.crk_iparams != 8) ||
411- kop->kop.crk_oparams != 0)
412- goto err;
413-
414- ret = crypto_kop_dsaverify(pkc);
415+ if (kop->kop.crk_oparams != 0)
416+ return err;
417+ else if (kop->kop.crk_iparams == 7)
418+ pkc_req_type = DSA_VERIFY;
419+ else if (kop->kop.crk_iparams == 8)
420+ pkc_req_type = ECDSA_VERIFY;
421+ else
422+ return err;
423+ id = 1;
424+ call_next_action = crypto_kop_dsaverify;
425 break;
426 case CRK_DH_COMPUTE_KEY:
427- if ((kop->kop.crk_iparams != 3 && kop->kop.crk_iparams != 4) ||
428- kop->kop.crk_oparams != 1)
429- goto err;
430- ret = crypto_kop_dh_key(pkc);
431+ if (kop->kop.crk_oparams != 1)
432+ return err;
433+ else if (kop->kop.crk_iparams == 3)
434+ pkc_req_type = DH_COMPUTE_KEY;
435+ else if (kop->kop.crk_iparams == 4)
436+ pkc_req_type = ECDH_COMPUTE_KEY;
437+ else
438+ return err;
439+ id = 2;
440+ call_next_action = crypto_kop_dh_key;
441 break;
442 case CRK_DH_GENERATE_KEY:
443 case CRK_DSA_GENERATE_KEY:
444- if ((kop->kop.crk_iparams != 3 && kop->kop.crk_iparams != 4))
445- goto err;
446- ret = crypto_kop_keygen(pkc);
447+ if (kop->kop.crk_iparams == 3)
448+ pkc_req_type = DLC_KEYGEN;
449+ else if (kop->kop.crk_iparams == 4)
450+ pkc_req_type = ECC_KEYGEN;
451+ else
452+ return err;
453+ id = 1;
454+ call_next_action = crypto_kop_keygen;
455 break;
456 case CRK_RSA_GENERATE_KEY:
457- ret = crypto_kop_rsa_keygen(pkc);
458+ pkc_req_type = RSA_KEYGEN;
459+ id = 0;
460+ call_next_action = crypto_kop_rsa_keygen;
461 break;
462+ default:
463+ return err;
464 }
465-err:
466- return ret;
467+ err = -ENOMEM;
468+ pkc->s = crypto_alloc_pkc(pkc_alg_list[id].alg_name,
469+ pkc_alg_list[id].type,
470+ pkc_alg_list[id].mask);
471+ if (IS_ERR_OR_NULL(pkc->s))
472+ return err;
473+
474+ pkc->req = pkc_request_alloc(pkc->s, GFP_KERNEL);
475+ if (IS_ERR_OR_NULL(pkc->req))
476+ goto out_free_tfm;
477+
478+ /* todo - fix alloc-free on error path */
479+ pkc->req->type = pkc_req_type;
480+ err = call_next_action(pkc);
481+ if (pkc->type == SYNCHRONOUS)
482+ kfree(pkc->req);
483+
484+ return err;
485+
486+out_free_tfm:
487+ crypto_free_pkc(pkc->s);
488+ return err;
489 }
490
491 int crypto_run(struct fcrypt *fcr, struct kernel_crypt_op *kcop)
492--
4932.7.0
494
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-12-11 12:20:04 +0000