97 	struct scatter_walk walk;  in ccm_calculate_auth_mac()  local
112 	scatterwalk_start(&walk, req->src);  in ccm_calculate_auth_mac()
115 		u32 n = scatterwalk_clamp(&walk, assoclen);  in ccm_calculate_auth_mac()
119 			scatterwalk_start(&walk, sg_next(walk.sg));  in ccm_calculate_auth_mac()
120 			n = scatterwalk_clamp(&walk, assoclen);  in ccm_calculate_auth_mac()
123 		p = ptr = scatterwalk_map(&walk);  in ccm_calculate_auth_mac()
125 		scatterwalk_advance(&walk, n);  in ccm_calculate_auth_mac()
158 		scatterwalk_done(&walk, 0, assoclen);  in ccm_calculate_auth_mac()
162 static int ccm_crypt(struct aead_request *req, struct skcipher_walk *walk,  in ccm_crypt()  argument
172 	memcpy(ctr0, walk->iv, SM4_BLOCK_SIZE);  in ccm_crypt()
173 	crypto_inc(walk->iv, SM4_BLOCK_SIZE);  in ccm_crypt()
180 	while (walk->nbytes && walk->nbytes != walk->total) {  in ccm_crypt()
181 		unsigned int tail = walk->nbytes % SM4_BLOCK_SIZE;  in ccm_crypt()
183 		sm4_ce_ccm_crypt(rkey_enc, walk->dst.virt.addr,  in ccm_crypt()
184 				 walk->src.virt.addr, walk->iv,  in ccm_crypt()
185 				 walk->nbytes - tail, mac);  in ccm_crypt()
189 		err = skcipher_walk_done(walk, tail);  in ccm_crypt()
194 	if (walk->nbytes) {  in ccm_crypt()
195 		sm4_ce_ccm_crypt(rkey_enc, walk->dst.virt.addr,  in ccm_crypt()
196 				 walk->src.virt.addr, walk->iv,  in ccm_crypt()
197 				 walk->nbytes, mac);  in ccm_crypt()
203 		err = skcipher_walk_done(walk, 0);  in ccm_crypt()
218 	struct skcipher_walk walk;  in ccm_encrypt()  local
225 	err = skcipher_walk_aead_encrypt(&walk, req, false);  in ccm_encrypt()
229 	err = ccm_crypt(req, &walk, ctx->rkey_enc, mac, sm4_ce_ccm_enc);  in ccm_encrypt()
247 	struct skcipher_walk walk;  in ccm_decrypt()  local
254 	err = skcipher_walk_aead_decrypt(&walk, req, false);  in ccm_decrypt()
258 	err = ccm_crypt(req, &walk, ctx->rkey_enc, mac, sm4_ce_ccm_dec);  in ccm_decrypt()