180 static int ppc_ecb_crypt(struct skcipher_request *req, bool enc)  in ppc_ecb_crypt()  argument
182 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);  in ppc_ecb_crypt()
188 	err = skcipher_walk_virt(&walk, req, false);  in ppc_ecb_crypt()
209 static int ppc_ecb_encrypt(struct skcipher_request *req)  in ppc_ecb_encrypt()  argument
211 	return ppc_ecb_crypt(req, true);  in ppc_ecb_encrypt()
214 static int ppc_ecb_decrypt(struct skcipher_request *req)  in ppc_ecb_decrypt()  argument
216 	return ppc_ecb_crypt(req, false);  in ppc_ecb_decrypt()
219 static int ppc_cbc_crypt(struct skcipher_request *req, bool enc)  in ppc_cbc_crypt()  argument
221 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);  in ppc_cbc_crypt()
227 	err = skcipher_walk_virt(&walk, req, false);  in ppc_cbc_crypt()
250 static int ppc_cbc_encrypt(struct skcipher_request *req)  in ppc_cbc_encrypt()  argument
252 	return ppc_cbc_crypt(req, true);  in ppc_cbc_encrypt()
255 static int ppc_cbc_decrypt(struct skcipher_request *req)  in ppc_cbc_decrypt()  argument
257 	return ppc_cbc_crypt(req, false);  in ppc_cbc_decrypt()
260 static int ppc_ctr_crypt(struct skcipher_request *req)  in ppc_ctr_crypt()  argument
262 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);  in ppc_ctr_crypt()
268 	err = skcipher_walk_virt(&walk, req, false);  in ppc_ctr_crypt()
286 static int ppc_xts_crypt(struct skcipher_request *req, bool enc)  in ppc_xts_crypt()  argument
288 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);  in ppc_xts_crypt()
295 	err = skcipher_walk_virt(&walk, req, false);  in ppc_xts_crypt()
320 static int ppc_xts_encrypt(struct skcipher_request *req)  in ppc_xts_encrypt()  argument
322 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);  in ppc_xts_encrypt()
324 	int tail = req->cryptlen % AES_BLOCK_SIZE;  in ppc_xts_encrypt()
325 	int offset = req->cryptlen - tail - AES_BLOCK_SIZE;  in ppc_xts_encrypt()
330 	if (req->cryptlen < AES_BLOCK_SIZE)  in ppc_xts_encrypt()
334 		subreq = *req;  in ppc_xts_encrypt()
335 		skcipher_request_set_crypt(&subreq, req->src, req->dst,  in ppc_xts_encrypt()
336 					   req->cryptlen - tail, req->iv);  in ppc_xts_encrypt()
337 		req = &subreq;  in ppc_xts_encrypt()
340 	err = ppc_xts_crypt(req, true);  in ppc_xts_encrypt()
344 	scatterwalk_map_and_copy(b[0], req->dst, offset, AES_BLOCK_SIZE, 0);  in ppc_xts_encrypt()
346 	scatterwalk_map_and_copy(b[0], req->src, offset + AES_BLOCK_SIZE, tail, 0);  in ppc_xts_encrypt()
350 			req->iv, NULL);  in ppc_xts_encrypt()
353 	scatterwalk_map_and_copy(b[0], req->dst, offset, AES_BLOCK_SIZE + tail, 1);  in ppc_xts_encrypt()
358 static int ppc_xts_decrypt(struct skcipher_request *req)  in ppc_xts_decrypt()  argument
360 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);  in ppc_xts_decrypt()
362 	int tail = req->cryptlen % AES_BLOCK_SIZE;  in ppc_xts_decrypt()
363 	int offset = req->cryptlen - tail - AES_BLOCK_SIZE;  in ppc_xts_decrypt()
369 	if (req->cryptlen < AES_BLOCK_SIZE)  in ppc_xts_decrypt()
373 		subreq = *req;  in ppc_xts_decrypt()
374 		skcipher_request_set_crypt(&subreq, req->src, req->dst,  in ppc_xts_decrypt()
375 					   offset, req->iv);  in ppc_xts_decrypt()
376 		req = &subreq;  in ppc_xts_decrypt()
379 	err = ppc_xts_crypt(req, false);  in ppc_xts_decrypt()
383 	scatterwalk_map_and_copy(b[1], req->src, offset, AES_BLOCK_SIZE + tail, 0);  in ppc_xts_decrypt()
387 		ppc_encrypt_ecb(req->iv, req->iv, ctx->key_twk, ctx->rounds,  in ppc_xts_decrypt()
390 	gf128mul_x_ble(&twk, (le128 *)req->iv);  in ppc_xts_decrypt()
397 			req->iv, NULL);  in ppc_xts_decrypt()
400 	scatterwalk_map_and_copy(b[0], req->dst, offset, AES_BLOCK_SIZE + tail, 1);  in ppc_xts_decrypt()