477 			       size_t nbytes, int min, int rsvd);
479 				size_t nbytes, int fips);
520 			    int nbytes)  in _mix_pool_bytes()  argument
538 	while (nbytes--) {  in _mix_pool_bytes()
567 			     int nbytes)  in __mix_pool_bytes()  argument
569 	trace_mix_pool_bytes_nolock(r->name, nbytes, _RET_IP_);  in __mix_pool_bytes()
570 	_mix_pool_bytes(r, in, nbytes);  in __mix_pool_bytes()
574 			   int nbytes)  in mix_pool_bytes()  argument
578 	trace_mix_pool_bytes(r->name, nbytes, _RET_IP_);  in mix_pool_bytes()
580 	_mix_pool_bytes(r, in, nbytes);  in mix_pool_bytes()
939 static ssize_t extract_crng_user(void __user *buf, size_t nbytes)  in extract_crng_user()  argument
943 	int large_request = (nbytes > 256);  in extract_crng_user()
945 	while (nbytes) {  in extract_crng_user()
956 		i = min_t(int, nbytes, CHACHA20_BLOCK_SIZE);  in extract_crng_user()
962 		nbytes -= i;  in extract_crng_user()
1221 static void _xfer_secondary_pool(struct entropy_store *r, size_t nbytes);
1222 static void xfer_secondary_pool(struct entropy_store *r, size_t nbytes)  in xfer_secondary_pool()  argument
1225 	    r->entropy_count >= (nbytes << (ENTROPY_SHIFT + 3)) ||  in xfer_secondary_pool()
1238 	_xfer_secondary_pool(r, nbytes);  in xfer_secondary_pool()
1241 static void _xfer_secondary_pool(struct entropy_store *r, size_t nbytes)  in _xfer_secondary_pool()  argument
1247 	int bytes = nbytes;  in _xfer_secondary_pool()
1254 	trace_xfer_secondary_pool(r->name, bytes * 8, nbytes * 8,  in _xfer_secondary_pool()
1282 static size_t account(struct entropy_store *r, size_t nbytes, int min,  in account()  argument
1293 	ibytes = nbytes;  in account()
1391 				size_t nbytes, int fips)  in _extract_entropy()  argument
1397 	while (nbytes) {  in _extract_entropy()
1407 		i = min_t(int, nbytes, EXTRACT_SIZE);  in _extract_entropy()
1409 		nbytes -= i;  in _extract_entropy()
1430 				 size_t nbytes, int min, int reserved)  in extract_entropy()  argument
1451 	trace_extract_entropy(r->name, nbytes, ENTROPY_BITS(r), _RET_IP_);  in extract_entropy()
1452 	xfer_secondary_pool(r, nbytes);  in extract_entropy()
1453 	nbytes = account(r, nbytes, min, reserved);  in extract_entropy()
1455 	return _extract_entropy(r, buf, nbytes, fips_enabled);  in extract_entropy()
1463 				    size_t nbytes)  in extract_entropy_user()  argument
1467 	int large_request = (nbytes > 256);  in extract_entropy_user()
1469 	trace_extract_entropy_user(r->name, nbytes, ENTROPY_BITS(r), _RET_IP_);  in extract_entropy_user()
1470 	xfer_secondary_pool(r, nbytes);  in extract_entropy_user()
1471 	nbytes = account(r, nbytes, 0, 0);  in extract_entropy_user()
1473 	while (nbytes) {  in extract_entropy_user()
1484 		i = min_t(int, nbytes, EXTRACT_SIZE);  in extract_entropy_user()
1490 		nbytes -= i;  in extract_entropy_user()
1508 void get_random_bytes(void *buf, int nbytes)  in get_random_bytes()  argument
1517 	trace_get_random_bytes(nbytes, _RET_IP_);  in get_random_bytes()
1519 	while (nbytes >= CHACHA20_BLOCK_SIZE) {  in get_random_bytes()
1522 		nbytes -= CHACHA20_BLOCK_SIZE;  in get_random_bytes()
1525 	if (nbytes > 0) {  in get_random_bytes()
1527 		memcpy(buf, tmp, nbytes);  in get_random_bytes()
1528 		crng_backtrack_protect(tmp, nbytes);  in get_random_bytes()
1603 void get_random_bytes_arch(void *buf, int nbytes)  in get_random_bytes_arch()  argument
1607 	trace_get_random_bytes_arch(nbytes, _RET_IP_);  in get_random_bytes_arch()
1608 	while (nbytes) {  in get_random_bytes_arch()
1610 		int chunk = min(nbytes, (int)sizeof(unsigned long));  in get_random_bytes_arch()
1617 		nbytes -= chunk;  in get_random_bytes_arch()
1620 	if (nbytes)  in get_random_bytes_arch()
1621 		get_random_bytes(p, nbytes);  in get_random_bytes_arch()
1709 _random_read(int nonblock, char __user *buf, size_t nbytes)  in _random_read()  argument
1713 	if (nbytes == 0)  in _random_read()
1716 	nbytes = min_t(size_t, nbytes, SEC_XFER_SIZE);  in _random_read()
1718 		n = extract_entropy_user(&blocking_pool, buf, nbytes);  in _random_read()
1721 		trace_random_read(n*8, (nbytes-n)*8,  in _random_read()
1740 random_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)  in random_read()  argument
1742 	return _random_read(file->f_flags & O_NONBLOCK, buf, nbytes);  in random_read()
1746 urandom_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)  in urandom_read()  argument
1756 		       current->comm, nbytes);  in urandom_read()
1761 	nbytes = min_t(size_t, nbytes, INT_MAX >> (ENTROPY_SHIFT + 3));  in urandom_read()
1762 	ret = extract_crng_user(buf, nbytes);  in urandom_read()
1763 	trace_urandom_read(8 * nbytes, 0, ENTROPY_BITS(&input_pool));  in urandom_read()