40 	struct skcipher_walk walk;  in sm4_ecb_do_crypt()  local
44 	err = skcipher_walk_virt(&walk, req, false);  in sm4_ecb_do_crypt()
46 	while ((nbytes = walk.nbytes) > 0) {  in sm4_ecb_do_crypt()
47 		const u8 *src = walk.src.virt.addr;  in sm4_ecb_do_crypt()
48 		u8 *dst = walk.dst.virt.addr;  in sm4_ecb_do_crypt()
60 		err = skcipher_walk_done(&walk, nbytes % SM4_BLOCK_SIZE);  in sm4_ecb_do_crypt()
86 	struct skcipher_walk walk;  in sm4_cbc_encrypt()  local
90 	err = skcipher_walk_virt(&walk, req, false);  in sm4_cbc_encrypt()
92 	while ((nbytes = walk.nbytes) > 0) {  in sm4_cbc_encrypt()
93 		const u8 *iv = walk.iv;  in sm4_cbc_encrypt()
94 		const u8 *src = walk.src.virt.addr;  in sm4_cbc_encrypt()
95 		u8 *dst = walk.dst.virt.addr;  in sm4_cbc_encrypt()
105 		if (iv != walk.iv)  in sm4_cbc_encrypt()
106 			memcpy(walk.iv, iv, SM4_BLOCK_SIZE);  in sm4_cbc_encrypt()
108 		err = skcipher_walk_done(&walk, nbytes);  in sm4_cbc_encrypt()
118 	struct skcipher_walk walk;  in sm4_cbc_decrypt()  local
122 	err = skcipher_walk_virt(&walk, req, false);  in sm4_cbc_decrypt()
124 	while ((nbytes = walk.nbytes) > 0) {  in sm4_cbc_decrypt()
125 		const u8 *src = walk.src.virt.addr;  in sm4_cbc_decrypt()
126 		u8 *dst = walk.dst.virt.addr;  in sm4_cbc_decrypt()
134 					 walk.iv, nblocks);  in sm4_cbc_decrypt()
139 		err = skcipher_walk_done(&walk, nbytes % SM4_BLOCK_SIZE);  in sm4_cbc_decrypt()
149 	struct skcipher_walk walk;  in sm4_cfb_encrypt()  local
153 	err = skcipher_walk_virt(&walk, req, false);  in sm4_cfb_encrypt()
155 	while ((nbytes = walk.nbytes) > 0) {  in sm4_cfb_encrypt()
157 		const u8 *iv = walk.iv;  in sm4_cfb_encrypt()
158 		const u8 *src = walk.src.virt.addr;  in sm4_cfb_encrypt()
159 		u8 *dst = walk.dst.virt.addr;  in sm4_cfb_encrypt()
169 		if (iv != walk.iv)  in sm4_cfb_encrypt()
170 			memcpy(walk.iv, iv, SM4_BLOCK_SIZE);  in sm4_cfb_encrypt()
173 		if (walk.nbytes == walk.total && nbytes > 0) {  in sm4_cfb_encrypt()
174 			sm4_crypt_block(ctx->rkey_enc, keystream, walk.iv);  in sm4_cfb_encrypt()
179 		err = skcipher_walk_done(&walk, nbytes);  in sm4_cfb_encrypt()
189 	struct skcipher_walk walk;  in sm4_cfb_decrypt()  local
193 	err = skcipher_walk_virt(&walk, req, false);  in sm4_cfb_decrypt()
195 	while ((nbytes = walk.nbytes) > 0) {  in sm4_cfb_decrypt()
196 		const u8 *src = walk.src.virt.addr;  in sm4_cfb_decrypt()
197 		u8 *dst = walk.dst.virt.addr;  in sm4_cfb_decrypt()
205 					 walk.iv, nblocks);  in sm4_cfb_decrypt()
215 		if (walk.nbytes == walk.total && nbytes > 0) {  in sm4_cfb_decrypt()
218 			sm4_crypt_block(ctx->rkey_enc, keystream, walk.iv);  in sm4_cfb_decrypt()
223 		err = skcipher_walk_done(&walk, nbytes);  in sm4_cfb_decrypt()
233 	struct skcipher_walk walk;  in sm4_ctr_crypt()  local
237 	err = skcipher_walk_virt(&walk, req, false);  in sm4_ctr_crypt()
239 	while ((nbytes = walk.nbytes) > 0) {  in sm4_ctr_crypt()
240 		const u8 *src = walk.src.virt.addr;  in sm4_ctr_crypt()
241 		u8 *dst = walk.dst.virt.addr;  in sm4_ctr_crypt()
249 					   walk.iv, nblocks);  in sm4_ctr_crypt()
259 		if (walk.nbytes == walk.total && nbytes > 0) {  in sm4_ctr_crypt()
262 			sm4_crypt_block(ctx->rkey_enc, keystream, walk.iv);  in sm4_ctr_crypt()
263 			crypto_inc(walk.iv, SM4_BLOCK_SIZE);  in sm4_ctr_crypt()
268 		err = skcipher_walk_done(&walk, nbytes);  in sm4_ctr_crypt()