lwip - Official mbed lwIP library (version 1.4.0)

Users » mbed_official » Code » lwip

Official mbed lwIP library (version 1.4.0)

Dependents: LwIPNetworking NetServicesMin EthernetInterface EthernetInterface_RSF ... more

Legacy Networking Libraries

This is an mbed 2 networking library. For mbed OS 5, lwip has been integrated with built-in networking interfaces. The networking libraries have been revised to better support additional network stacks and thread safety here.

This library is based on the code of lwIP v1.4.0

Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
All rights reserved. 

Redistribution and use in source and binary forms, with or without modification, 
are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
   derived from this software without specific prior written permission. 

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
OF SUCH DAMAGE.

netif/ppp/randm.h@20:08f08bfc3f3d, 2016-03-14 (annotated)

Committer:: mbed_official
Date:: Mon Mar 14 16:15:36 2016 +0000
Revision:: 20:08f08bfc3f3d
Parent:: 0:51ac1d130fd4

Synchronized with git revision fec574a5ed6db26aca1b13992ff271bf527d4a0d

Full URL: https://github.com/mbedmicro/mbed/commit/fec574a5ed6db26aca1b13992ff271bf527d4a0d/

Increased allocated netbufs to handle DTLS handshakes

Who changed what in which revision?

User	Revision	Line number	New contents of line
mbed_official	0:51ac1d130fd4	1	/*****************************************************************************
mbed_official	0:51ac1d130fd4	2	* randm.h - Random number generator header file.
mbed_official	0:51ac1d130fd4	3	*
mbed_official	0:51ac1d130fd4	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
mbed_official	0:51ac1d130fd4	5	* Copyright (c) 1998 Global Election Systems Inc.
mbed_official	0:51ac1d130fd4	6	*
mbed_official	0:51ac1d130fd4	7	* The authors hereby grant permission to use, copy, modify, distribute,
mbed_official	0:51ac1d130fd4	8	* and license this software and its documentation for any purpose, provided
mbed_official	0:51ac1d130fd4	9	* that existing copyright notices are retained in all copies and that this
mbed_official	0:51ac1d130fd4	10	* notice and the following disclaimer are included verbatim in any
mbed_official	0:51ac1d130fd4	11	* distributions. No written agreement, license, or royalty fee is required
mbed_official	0:51ac1d130fd4	12	* for any of the authorized uses.
mbed_official	0:51ac1d130fd4	13	*
mbed_official	0:51ac1d130fd4	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
mbed_official	0:51ac1d130fd4	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
mbed_official	0:51ac1d130fd4	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
mbed_official	0:51ac1d130fd4	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
mbed_official	0:51ac1d130fd4	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
mbed_official	0:51ac1d130fd4	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
mbed_official	0:51ac1d130fd4	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
mbed_official	0:51ac1d130fd4	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
mbed_official	0:51ac1d130fd4	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
mbed_official	0:51ac1d130fd4	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official	0:51ac1d130fd4	24	*
mbed_official	0:51ac1d130fd4	25	******************************************************************************
mbed_official	0:51ac1d130fd4	26	* REVISION HISTORY
mbed_official	0:51ac1d130fd4	27	*
mbed_official	0:51ac1d130fd4	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
mbed_official	0:51ac1d130fd4	29	* Ported to lwIP.
mbed_official	0:51ac1d130fd4	30	* 98-05-29 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
mbed_official	0:51ac1d130fd4	31	* Extracted from avos.
mbed_official	0:51ac1d130fd4	32	*****************************************************************************/
mbed_official	0:51ac1d130fd4	33
mbed_official	0:51ac1d130fd4	34	#ifndef RANDM_H
mbed_official	0:51ac1d130fd4	35	#define RANDM_H
mbed_official	0:51ac1d130fd4	36
mbed_official	0:51ac1d130fd4	37	/***********************
mbed_official	0:51ac1d130fd4	38	* PUBLIC FUNCTIONS *
mbed_official	0:51ac1d130fd4	39	***********************/
mbed_official	0:51ac1d130fd4	40	/*
mbed_official	0:51ac1d130fd4	41	* Initialize the random number generator.
mbed_official	0:51ac1d130fd4	42	*/
mbed_official	0:51ac1d130fd4	43	void avRandomInit(void);
mbed_official	0:51ac1d130fd4	44
mbed_official	0:51ac1d130fd4	45	/*
mbed_official	0:51ac1d130fd4	46	* Churn the randomness pool on a random event. Call this early and often
mbed_official	0:51ac1d130fd4	47	* on random and semi-random system events to build randomness in time for
mbed_official	0:51ac1d130fd4	48	* usage. For randomly timed events, pass a null pointer and a zero length
mbed_official	0:51ac1d130fd4	49	* and this will use the system timer and other sources to add randomness.
mbed_official	0:51ac1d130fd4	50	* If new random data is available, pass a pointer to that and it will be
mbed_official	0:51ac1d130fd4	51	* included.
mbed_official	0:51ac1d130fd4	52	*/
mbed_official	0:51ac1d130fd4	53	void avChurnRand(char *randData, u32_t randLen);
mbed_official	0:51ac1d130fd4	54
mbed_official	0:51ac1d130fd4	55	/*
mbed_official	0:51ac1d130fd4	56	* Randomize our random seed value. To be called for truely random events
mbed_official	0:51ac1d130fd4	57	* such as user operations and network traffic.
mbed_official	0:51ac1d130fd4	58	*/
mbed_official	0:51ac1d130fd4	59	#if MD5_SUPPORT
mbed_official	0:51ac1d130fd4	60	#define avRandomize() avChurnRand(NULL, 0)
mbed_official	0:51ac1d130fd4	61	#else /* MD5_SUPPORT */
mbed_official	0:51ac1d130fd4	62	void avRandomize(void);
mbed_official	0:51ac1d130fd4	63	#endif /* MD5_SUPPORT */
mbed_official	0:51ac1d130fd4	64
mbed_official	0:51ac1d130fd4	65	/*
mbed_official	0:51ac1d130fd4	66	* Use the random pool to generate random data. This degrades to pseudo
mbed_official	0:51ac1d130fd4	67	* random when used faster than randomness is supplied using churnRand().
mbed_official	0:51ac1d130fd4	68	* Thus it's important to make sure that the results of this are not
mbed_official	0:51ac1d130fd4	69	* published directly because one could predict the next result to at
mbed_official	0:51ac1d130fd4	70	* least some degree. Also, it's important to get a good seed before
mbed_official	0:51ac1d130fd4	71	* the first use.
mbed_official	0:51ac1d130fd4	72	*/
mbed_official	0:51ac1d130fd4	73	void avGenRand(char *buf, u32_t bufLen);
mbed_official	0:51ac1d130fd4	74
mbed_official	0:51ac1d130fd4	75	/*
mbed_official	0:51ac1d130fd4	76	* Return a new random number.
mbed_official	0:51ac1d130fd4	77	*/
mbed_official	0:51ac1d130fd4	78	u32_t avRandom(void);
mbed_official	0:51ac1d130fd4	79
mbed_official	0:51ac1d130fd4	80
mbed_official	0:51ac1d130fd4	81	#endif /* RANDM_H */