15 static int chacha_stream_xor(struct skcipher_request *req,  in chacha_stream_xor()  argument
22 	err = skcipher_walk_virt(&walk, req, false);  in chacha_stream_xor()
40 static int crypto_chacha_crypt(struct skcipher_request *req)  in crypto_chacha_crypt()  argument
42 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);  in crypto_chacha_crypt()
45 	return chacha_stream_xor(req, ctx, req->iv);  in crypto_chacha_crypt()
48 static int crypto_xchacha_crypt(struct skcipher_request *req)  in crypto_xchacha_crypt()  argument
50 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);  in crypto_xchacha_crypt()
57 	chacha_init_generic(state, ctx->key, req->iv);  in crypto_xchacha_crypt()
62 	memcpy(&real_iv[0], req->iv + 24, 8); /* stream position */  in crypto_xchacha_crypt()
63 	memcpy(&real_iv[8], req->iv + 16, 8); /* remaining 64 nonce bits */  in crypto_xchacha_crypt()
66 	return chacha_stream_xor(req, &subctx, real_iv);  in crypto_xchacha_crypt()