drivers/crypto/padlock-aes.c

43 struct cword {
55  * and cword aligned on 16 Bytes boundaries and
66 		struct cword encrypt;
67 		struct cword decrypt;
68 	} cword;
72 static DEFINE_PER_CPU(struct cword *, paes_last_cword);
131 	memset(&ctx->cword, 0, sizeof(ctx->cword));
133 	ctx->cword.decrypt.encdec = 1;
134 	ctx->cword.encrypt.rounds = 10 + (key_len - 16) / 4;
135 	ctx->cword.decrypt.rounds = ctx->cword.encrypt.rounds;
136 	ctx->cword.encrypt.ksize = (key_len - 16) / 8;
137 	ctx->cword.decrypt.ksize = ctx->cword.encrypt.ksize;
144 	ctx->cword.encrypt.keygen = 1;
145 	ctx->cword.decrypt.keygen = 1;
155 		if (&ctx->cword.encrypt == per_cpu(paes_last_cword, cpu) ||
156 		    &ctx->cword.decrypt == per_cpu(paes_last_cword, cpu))
171 static inline void padlock_reset_key(struct cword *cword)
175 	if (cword != per_cpu(paes_last_cword, cpu))
183 static inline void padlock_store_cword(struct cword *cword)
185 	per_cpu(paes_last_cword, raw_smp_processor_id()) = cword;
195 				  struct cword *control_word, int count)
203 				 u8 *iv, struct cword *control_word, int count)
212 			   struct cword *cword, int count)
222 	rep_xcrypt_ecb(tmp, out, key, cword, count);
226 			   u8 *iv, struct cword *cword, int count)
236 	return rep_xcrypt_cbc(tmp, out, key, iv, cword, count);
240 			     struct cword *cword, int count)
246 		ecb_crypt_copy(in, out, key, cword, count);
250 	rep_xcrypt_ecb(in, out, key, cword, count);
254 			    u8 *iv, struct cword *cword, int count)
258 		return cbc_crypt_copy(in, out, key, iv, cword, count);
260 	return rep_xcrypt_cbc(in, out, key, iv, cword, count);
310 	padlock_reset_key(&ctx->cword.encrypt);
311 	ecb_crypt(in, out, ctx->E, &ctx->cword.encrypt, 1);
312 	padlock_store_cword(&ctx->cword.encrypt);
319 	padlock_reset_key(&ctx->cword.encrypt);
320 	ecb_crypt(in, out, ctx->D, &ctx->cword.decrypt, 1);
321 	padlock_store_cword(&ctx->cword.encrypt);
352 	padlock_reset_key(&ctx->cword.encrypt);
358 				   ctx->E, &ctx->cword.encrypt,
364 	padlock_store_cword(&ctx->cword.encrypt);
377 	padlock_reset_key(&ctx->cword.decrypt);
383 				   ctx->D, &ctx->cword.decrypt,
389 	padlock_store_cword(&ctx->cword.encrypt);
417 	padlock_reset_key(&ctx->cword.encrypt);
424 					    walk.iv, &ctx->cword.encrypt,
431 	padlock_store_cword(&ctx->cword.decrypt);
444 	padlock_reset_key(&ctx->cword.encrypt);
450 				   ctx->D, walk.iv, &ctx->cword.decrypt,
456 	padlock_store_cword(&ctx->cword.encrypt);