Bonjour - First step: AutoIP compiled in and working

Users » darran » Code » Bonjour

Darran Shepherd / Mbed 2 deprecated Bonjour

First step: AutoIP compiled in and working

lwip/netif/slipif.c@1:4218cacaf696, 2010-06-18 (annotated)

Committer:: darran
Date:: Fri Jun 18 15:54:21 2010 +0000
Revision:: 1:4218cacaf696
Parent:: 0:55a05330f8cc

Who changed what in which revision?

User	Revision	Line number	New contents of line
darran	0:55a05330f8cc	1	/**
darran	0:55a05330f8cc	2	* @file
darran	0:55a05330f8cc	3	* SLIP Interface
darran	0:55a05330f8cc	4	*
darran	0:55a05330f8cc	5	*/
darran	0:55a05330f8cc	6
darran	0:55a05330f8cc	7	/*
darran	0:55a05330f8cc	8	* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
darran	0:55a05330f8cc	9	* All rights reserved.
darran	0:55a05330f8cc	10	*
darran	0:55a05330f8cc	11	* Redistribution and use in source and binary forms, with or without
darran	0:55a05330f8cc	12	* modification, are permitted provided that the following conditions
darran	0:55a05330f8cc	13	* are met:
darran	0:55a05330f8cc	14	* 1. Redistributions of source code must retain the above copyright
darran	0:55a05330f8cc	15	* notice, this list of conditions and the following disclaimer.
darran	0:55a05330f8cc	16	* 2. Redistributions in binary form must reproduce the above copyright
darran	0:55a05330f8cc	17	* notice, this list of conditions and the following disclaimer in the
darran	0:55a05330f8cc	18	* documentation and/or other materials provided with the distribution.
darran	0:55a05330f8cc	19	* 3. Neither the name of the Institute nor the names of its contributors
darran	0:55a05330f8cc	20	* may be used to endorse or promote products derived from this software
darran	0:55a05330f8cc	21	* without specific prior written permission.
darran	0:55a05330f8cc	22	*
darran	0:55a05330f8cc	23	* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
darran	0:55a05330f8cc	24	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
darran	0:55a05330f8cc	25	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
darran	0:55a05330f8cc	26	* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
darran	0:55a05330f8cc	27	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
darran	0:55a05330f8cc	28	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
darran	0:55a05330f8cc	29	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
darran	0:55a05330f8cc	30	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
darran	0:55a05330f8cc	31	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
darran	0:55a05330f8cc	32	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
darran	0:55a05330f8cc	33	* SUCH DAMAGE.
darran	0:55a05330f8cc	34	*
darran	0:55a05330f8cc	35	* This file is built upon the file: src/arch/rtxc/netif/sioslip.c
darran	0:55a05330f8cc	36	*
darran	0:55a05330f8cc	37	* Author: Magnus Ivarsson <magnus.ivarsson(at)volvo.com>
darran	0:55a05330f8cc	38	*/
darran	0:55a05330f8cc	39
darran	0:55a05330f8cc	40	/*
darran	0:55a05330f8cc	41	* This is an arch independent SLIP netif. The specific serial hooks must be
darran	0:55a05330f8cc	42	* provided by another file. They are sio_open, sio_read/sio_tryread and sio_send
darran	0:55a05330f8cc	43	*/
darran	0:55a05330f8cc	44
darran	0:55a05330f8cc	45	#include "netif/slipif.h"
darran	0:55a05330f8cc	46	#include "lwip/opt.h"
darran	0:55a05330f8cc	47
darran	0:55a05330f8cc	48	#if LWIP_HAVE_SLIPIF
darran	0:55a05330f8cc	49
darran	0:55a05330f8cc	50	#include "lwip/def.h"
darran	0:55a05330f8cc	51	#include "lwip/pbuf.h"
darran	0:55a05330f8cc	52	#include "lwip/sys.h"
darran	0:55a05330f8cc	53	#include "lwip/stats.h"
darran	0:55a05330f8cc	54	#include "lwip/snmp.h"
darran	0:55a05330f8cc	55	#include "lwip/sio.h"
darran	0:55a05330f8cc	56
darran	0:55a05330f8cc	57	#define SLIP_BLOCK 1
darran	0:55a05330f8cc	58	#define SLIP_DONTBLOCK 0
darran	0:55a05330f8cc	59
darran	0:55a05330f8cc	60	#define SLIP_END 0300 /* 0xC0 */
darran	0:55a05330f8cc	61	#define SLIP_ESC 0333 /* 0xDB */
darran	0:55a05330f8cc	62	#define SLIP_ESC_END 0334 /* 0xDC */
darran	0:55a05330f8cc	63	#define SLIP_ESC_ESC 0335 /* 0xDD */
darran	0:55a05330f8cc	64
darran	0:55a05330f8cc	65	#define SLIP_MAX_SIZE 1500
darran	0:55a05330f8cc	66
darran	0:55a05330f8cc	67	enum slipif_recv_state {
darran	0:55a05330f8cc	68	SLIP_RECV_NORMAL,
darran	0:55a05330f8cc	69	SLIP_RECV_ESCAPE,
darran	0:55a05330f8cc	70	};
darran	0:55a05330f8cc	71
darran	0:55a05330f8cc	72	struct slipif_priv {
darran	0:55a05330f8cc	73	sio_fd_t sd;
darran	0:55a05330f8cc	74	/* q is the whole pbuf chain for a packet, p is the current pbuf in the chain */
darran	0:55a05330f8cc	75	struct pbuf p, q;
darran	0:55a05330f8cc	76	enum slipif_recv_state state;
darran	0:55a05330f8cc	77	u16_t i, recved;
darran	0:55a05330f8cc	78	};
darran	0:55a05330f8cc	79
darran	0:55a05330f8cc	80	/**
darran	0:55a05330f8cc	81	* Send a pbuf doing the necessary SLIP encapsulation
darran	0:55a05330f8cc	82	*
darran	0:55a05330f8cc	83	* Uses the serial layer's sio_send()
darran	0:55a05330f8cc	84	*
darran	0:55a05330f8cc	85	* @param netif the lwip network interface structure for this slipif
darran	0:55a05330f8cc	86	* @param p the pbuf chaing packet to send
darran	0:55a05330f8cc	87	* @param ipaddr the ip address to send the packet to (not used for slipif)
darran	0:55a05330f8cc	88	* @return always returns ERR_OK since the serial layer does not provide return values
darran	0:55a05330f8cc	89	*/
darran	0:55a05330f8cc	90	err_t
darran	0:55a05330f8cc	91	slipif_output(struct netif netif, struct pbuf p, ip_addr_t *ipaddr)
darran	0:55a05330f8cc	92	{
darran	0:55a05330f8cc	93	struct slipif_priv *priv;
darran	0:55a05330f8cc	94	struct pbuf *q;
darran	0:55a05330f8cc	95	u16_t i;
darran	0:55a05330f8cc	96	u8_t c;
darran	0:55a05330f8cc	97
darran	0:55a05330f8cc	98	LWIP_ASSERT("netif != NULL", (netif != NULL));
darran	0:55a05330f8cc	99	LWIP_ASSERT("netif->state != NULL", (netif->state != NULL));
darran	0:55a05330f8cc	100	LWIP_ASSERT("p != NULL", (p != NULL));
darran	0:55a05330f8cc	101
darran	0:55a05330f8cc	102	LWIP_UNUSED_ARG(ipaddr);
darran	0:55a05330f8cc	103
darran	0:55a05330f8cc	104	priv = netif->state;
darran	0:55a05330f8cc	105
darran	0:55a05330f8cc	106	/* Send pbuf out on the serial I/O device. */
darran	0:55a05330f8cc	107	sio_send(SLIP_END, priv->sd);
darran	0:55a05330f8cc	108
darran	0:55a05330f8cc	109	for (q = p; q != NULL; q = q->next) {
darran	0:55a05330f8cc	110	for (i = 0; i < q->len; i++) {
darran	0:55a05330f8cc	111	c = ((u8_t *)q->payload)[i];
darran	0:55a05330f8cc	112	switch (c) {
darran	0:55a05330f8cc	113	case SLIP_END:
darran	0:55a05330f8cc	114	sio_send(SLIP_ESC, priv->sd);
darran	0:55a05330f8cc	115	sio_send(SLIP_ESC_END, priv->sd);
darran	0:55a05330f8cc	116	break;
darran	0:55a05330f8cc	117	case SLIP_ESC:
darran	0:55a05330f8cc	118	sio_send(SLIP_ESC, priv->sd);
darran	0:55a05330f8cc	119	sio_send(SLIP_ESC_ESC, priv->sd);
darran	0:55a05330f8cc	120	break;
darran	0:55a05330f8cc	121	default:
darran	0:55a05330f8cc	122	sio_send(c, priv->sd);
darran	0:55a05330f8cc	123	break;
darran	0:55a05330f8cc	124	}
darran	0:55a05330f8cc	125	}
darran	0:55a05330f8cc	126	}
darran	0:55a05330f8cc	127	sio_send(SLIP_END, priv->sd);
darran	0:55a05330f8cc	128	return ERR_OK;
darran	0:55a05330f8cc	129	}
darran	0:55a05330f8cc	130
darran	0:55a05330f8cc	131	/**
darran	0:55a05330f8cc	132	* Static function for easy use of blockig or non-blocking
darran	0:55a05330f8cc	133	* sio_read
darran	0:55a05330f8cc	134	*
darran	0:55a05330f8cc	135	* @param fd serial device handle
darran	0:55a05330f8cc	136	* @param data pointer to data buffer for receiving
darran	0:55a05330f8cc	137	* @param len maximum length (in bytes) of data to receive
darran	0:55a05330f8cc	138	* @param block if 1, call sio_read; if 0, call sio_tryread
darran	0:55a05330f8cc	139	* @return return value of sio_read of sio_tryread
darran	0:55a05330f8cc	140	*/
darran	0:55a05330f8cc	141	static u32_t
darran	0:55a05330f8cc	142	slip_sio_read(sio_fd_t fd, u8_t* data, u32_t len, u8_t block)
darran	0:55a05330f8cc	143	{
darran	0:55a05330f8cc	144	if (block) {
darran	0:55a05330f8cc	145	return sio_read(fd, data, len);
darran	0:55a05330f8cc	146	} else {
darran	0:55a05330f8cc	147	return sio_tryread(fd, data, len);
darran	0:55a05330f8cc	148	}
darran	0:55a05330f8cc	149	}
darran	0:55a05330f8cc	150
darran	0:55a05330f8cc	151	/**
darran	0:55a05330f8cc	152	* Handle the incoming SLIP stream character by character
darran	0:55a05330f8cc	153	*
darran	0:55a05330f8cc	154	* Poll the serial layer by calling sio_read() or sio_tryread().
darran	0:55a05330f8cc	155	*
darran	0:55a05330f8cc	156	* @param netif the lwip network interface structure for this slipif
darran	0:55a05330f8cc	157	* @param block if 1, block until data is received; if 0, return when all data
darran	0:55a05330f8cc	158	* from the buffer is received (multiple calls to this function will
darran	0:55a05330f8cc	159	* return a complete packet, NULL is returned before - used for polling)
darran	0:55a05330f8cc	160	* @return The IP packet when SLIP_END is received
darran	0:55a05330f8cc	161	*/
darran	0:55a05330f8cc	162	static struct pbuf *
darran	0:55a05330f8cc	163	slipif_input(struct netif *netif, u8_t block)
darran	0:55a05330f8cc	164	{
darran	0:55a05330f8cc	165	struct slipif_priv *priv;
darran	0:55a05330f8cc	166	u8_t c;
darran	0:55a05330f8cc	167	struct pbuf *t;
darran	0:55a05330f8cc	168
darran	0:55a05330f8cc	169	LWIP_ASSERT("netif != NULL", (netif != NULL));
darran	0:55a05330f8cc	170	LWIP_ASSERT("netif->state != NULL", (netif->state != NULL));
darran	0:55a05330f8cc	171
darran	0:55a05330f8cc	172	priv = netif->state;
darran	0:55a05330f8cc	173
darran	0:55a05330f8cc	174	while (slip_sio_read(priv->sd, &c, 1, block) > 0) {
darran	0:55a05330f8cc	175	switch (priv->state) {
darran	0:55a05330f8cc	176	case SLIP_RECV_NORMAL:
darran	0:55a05330f8cc	177	switch (c) {
darran	0:55a05330f8cc	178	case SLIP_END:
darran	0:55a05330f8cc	179	if (priv->recved > 0) {
darran	0:55a05330f8cc	180	/* Received whole packet. */
darran	0:55a05330f8cc	181	/* Trim the pbuf to the size of the received packet. */
darran	0:55a05330f8cc	182	pbuf_realloc(priv->q, priv->recved);
darran	0:55a05330f8cc	183
darran	0:55a05330f8cc	184	LINK_STATS_INC(link.recv);
darran	0:55a05330f8cc	185
darran	0:55a05330f8cc	186	LWIP_DEBUGF(SLIP_DEBUG, ("slipif: Got packet\n"));
darran	0:55a05330f8cc	187	t = priv->q;
darran	0:55a05330f8cc	188	priv->p = priv->q = NULL;
darran	0:55a05330f8cc	189	priv->i = priv->recved = 0;
darran	0:55a05330f8cc	190	return t;
darran	0:55a05330f8cc	191	}
darran	0:55a05330f8cc	192	continue;
darran	0:55a05330f8cc	193	case SLIP_ESC:
darran	0:55a05330f8cc	194	priv->state = SLIP_RECV_ESCAPE;
darran	0:55a05330f8cc	195	continue;
darran	0:55a05330f8cc	196	}
darran	0:55a05330f8cc	197	break;
darran	0:55a05330f8cc	198	case SLIP_RECV_ESCAPE:
darran	0:55a05330f8cc	199	switch (c) {
darran	0:55a05330f8cc	200	case SLIP_ESC_END:
darran	0:55a05330f8cc	201	c = SLIP_END;
darran	0:55a05330f8cc	202	break;
darran	0:55a05330f8cc	203	case SLIP_ESC_ESC:
darran	0:55a05330f8cc	204	c = SLIP_ESC;
darran	0:55a05330f8cc	205	break;
darran	0:55a05330f8cc	206	}
darran	0:55a05330f8cc	207	priv->state = SLIP_RECV_NORMAL;
darran	0:55a05330f8cc	208	/* FALLTHROUGH */
darran	0:55a05330f8cc	209	}
darran	0:55a05330f8cc	210
darran	0:55a05330f8cc	211	/* byte received, packet not yet completely received */
darran	0:55a05330f8cc	212	if (priv->p == NULL) {
darran	0:55a05330f8cc	213	/* allocate a new pbuf */
darran	0:55a05330f8cc	214	LWIP_DEBUGF(SLIP_DEBUG, ("slipif_input: alloc\n"));
darran	0:55a05330f8cc	215	priv->p = pbuf_alloc(PBUF_LINK, (PBUF_POOL_BUFSIZE - PBUF_LINK_HLEN), PBUF_POOL);
darran	0:55a05330f8cc	216
darran	0:55a05330f8cc	217	if (priv->p == NULL) {
darran	0:55a05330f8cc	218	LINK_STATS_INC(link.drop);
darran	0:55a05330f8cc	219	LWIP_DEBUGF(SLIP_DEBUG, ("slipif_input: no new pbuf! (DROP)\n"));
darran	0:55a05330f8cc	220	/* don't process any further since we got no pbuf to receive to */
darran	0:55a05330f8cc	221	break;
darran	0:55a05330f8cc	222	}
darran	0:55a05330f8cc	223
darran	0:55a05330f8cc	224	if (priv->q != NULL) {
darran	0:55a05330f8cc	225	/* 'chain' the pbuf to the existing chain */
darran	0:55a05330f8cc	226	pbuf_cat(priv->q, priv->p);
darran	0:55a05330f8cc	227	} else {
darran	0:55a05330f8cc	228	/* p is the first pbuf in the chain */
darran	0:55a05330f8cc	229	priv->q = priv->p;
darran	0:55a05330f8cc	230	}
darran	0:55a05330f8cc	231	}
darran	0:55a05330f8cc	232
darran	0:55a05330f8cc	233	/* this automatically drops bytes if > SLIP_MAX_SIZE */
darran	0:55a05330f8cc	234	if ((priv->p != NULL) && (priv->recved <= SLIP_MAX_SIZE)) {
darran	0:55a05330f8cc	235	((u8_t *)priv->p->payload)[priv->i] = c;
darran	0:55a05330f8cc	236	priv->recved++;
darran	0:55a05330f8cc	237	priv->i++;
darran	0:55a05330f8cc	238	if (priv->i >= priv->p->len) {
darran	0:55a05330f8cc	239	/* on to the next pbuf */
darran	0:55a05330f8cc	240	priv->i = 0;
darran	0:55a05330f8cc	241	if (priv->p->next != NULL && priv->p->next->len > 0) {
darran	0:55a05330f8cc	242	/* p is a chain, on to the next in the chain */
darran	0:55a05330f8cc	243	priv->p = priv->p->next;
darran	0:55a05330f8cc	244	} else {
darran	0:55a05330f8cc	245	/* p is a single pbuf, set it to NULL so next time a new
darran	0:55a05330f8cc	246	* pbuf is allocated */
darran	0:55a05330f8cc	247	priv->p = NULL;
darran	0:55a05330f8cc	248	}
darran	0:55a05330f8cc	249	}
darran	0:55a05330f8cc	250	}
darran	0:55a05330f8cc	251	}
darran	0:55a05330f8cc	252
darran	0:55a05330f8cc	253	return NULL;
darran	0:55a05330f8cc	254	}
darran	0:55a05330f8cc	255
darran	0:55a05330f8cc	256	#if !NO_SYS
darran	0:55a05330f8cc	257	/**
darran	0:55a05330f8cc	258	* The SLIP input thread.
darran	0:55a05330f8cc	259	*
darran	0:55a05330f8cc	260	* Feed the IP layer with incoming packets
darran	0:55a05330f8cc	261	*
darran	0:55a05330f8cc	262	* @param nf the lwip network interface structure for this slipif
darran	0:55a05330f8cc	263	*/
darran	0:55a05330f8cc	264	static void
darran	0:55a05330f8cc	265	slipif_loop_thread(void *nf)
darran	0:55a05330f8cc	266	{
darran	0:55a05330f8cc	267	struct pbuf *p;
darran	0:55a05330f8cc	268	struct netif netif = (struct netif )nf;
darran	0:55a05330f8cc	269
darran	0:55a05330f8cc	270	while (1) {
darran	0:55a05330f8cc	271	p = slipif_input(netif, SLIP_BLOCK);
darran	0:55a05330f8cc	272	if (p != NULL) {
darran	0:55a05330f8cc	273	if (netif->input(p, netif) != ERR_OK) {
darran	0:55a05330f8cc	274	pbuf_free(p);
darran	0:55a05330f8cc	275	p = NULL;
darran	0:55a05330f8cc	276	}
darran	0:55a05330f8cc	277	}
darran	0:55a05330f8cc	278	}
darran	0:55a05330f8cc	279	}
darran	0:55a05330f8cc	280	#endif /* !NO_SYS */
darran	0:55a05330f8cc	281
darran	0:55a05330f8cc	282	/**
darran	0:55a05330f8cc	283	* SLIP netif initialization
darran	0:55a05330f8cc	284	*
darran	0:55a05330f8cc	285	* Call the arch specific sio_open and remember
darran	0:55a05330f8cc	286	* the opened device in the state field of the netif.
darran	0:55a05330f8cc	287	*
darran	0:55a05330f8cc	288	* @param netif the lwip network interface structure for this slipif
darran	0:55a05330f8cc	289	* @return ERR_OK if serial line could be opened,
darran	0:55a05330f8cc	290	* ERR_MEM if no memory could be allocated,
darran	0:55a05330f8cc	291	* ERR_IF is serial line couldn't be opened
darran	0:55a05330f8cc	292	*
darran	0:55a05330f8cc	293	* @note netif->num must contain the number of the serial port to open
darran	0:55a05330f8cc	294	* (0 by default)
darran	0:55a05330f8cc	295	*/
darran	0:55a05330f8cc	296	err_t
darran	0:55a05330f8cc	297	slipif_init(struct netif *netif)
darran	0:55a05330f8cc	298	{
darran	0:55a05330f8cc	299	struct slipif_priv *priv;
darran	0:55a05330f8cc	300
darran	0:55a05330f8cc	301	LWIP_DEBUGF(SLIP_DEBUG, ("slipif_init: netif->num=%"U16_F"\n", (u16_t)netif->num));
darran	0:55a05330f8cc	302
darran	0:55a05330f8cc	303	/* Allocate private data */
darran	0:55a05330f8cc	304	priv = mem_malloc(sizeof(struct slipif_priv));
darran	0:55a05330f8cc	305	if (!priv) {
darran	0:55a05330f8cc	306	return ERR_MEM;
darran	0:55a05330f8cc	307	}
darran	0:55a05330f8cc	308
darran	0:55a05330f8cc	309	netif->name[0] = 's';
darran	0:55a05330f8cc	310	netif->name[1] = 'l';
darran	0:55a05330f8cc	311	netif->output = slipif_output;
darran	0:55a05330f8cc	312	netif->mtu = SLIP_MAX_SIZE;
darran	0:55a05330f8cc	313	netif->flags \|= NETIF_FLAG_POINTTOPOINT;
darran	0:55a05330f8cc	314
darran	0:55a05330f8cc	315	/* Try to open the serial port (netif->num contains the port number). */
darran	0:55a05330f8cc	316	priv->sd = sio_open(netif->num);
darran	0:55a05330f8cc	317	if (!priv->sd) {
darran	0:55a05330f8cc	318	/* Opening the serial port failed. */
darran	0:55a05330f8cc	319	mem_free(priv);
darran	0:55a05330f8cc	320	return ERR_IF;
darran	0:55a05330f8cc	321	}
darran	0:55a05330f8cc	322
darran	0:55a05330f8cc	323	/* Initialize private data */
darran	0:55a05330f8cc	324	priv->p = NULL;
darran	0:55a05330f8cc	325	priv->q = NULL;
darran	0:55a05330f8cc	326	priv->state = SLIP_RECV_NORMAL;
darran	0:55a05330f8cc	327	priv->i = 0;
darran	0:55a05330f8cc	328	priv->recved = 0;
darran	0:55a05330f8cc	329
darran	0:55a05330f8cc	330	netif->state = priv;
darran	0:55a05330f8cc	331
darran	0:55a05330f8cc	332	/* initialize the snmp variables and counters inside the struct netif
darran	0:55a05330f8cc	333	* ifSpeed: no assumption can be made without knowing more about the
darran	0:55a05330f8cc	334	* serial line!
darran	0:55a05330f8cc	335	*/
darran	0:55a05330f8cc	336	NETIF_INIT_SNMP(netif, snmp_ifType_slip, 0);
darran	0:55a05330f8cc	337
darran	0:55a05330f8cc	338	/* Create a thread to poll the serial line. */
darran	0:55a05330f8cc	339	sys_thread_new(SLIPIF_THREAD_NAME, slipif_loop_thread, netif,
darran	0:55a05330f8cc	340	SLIPIF_THREAD_STACKSIZE, SLIPIF_THREAD_PRIO);
darran	0:55a05330f8cc	341	return ERR_OK;
darran	0:55a05330f8cc	342	}
darran	0:55a05330f8cc	343
darran	0:55a05330f8cc	344	/**
darran	0:55a05330f8cc	345	* Polls the serial device and feeds the IP layer with incoming packets.
darran	0:55a05330f8cc	346	*
darran	0:55a05330f8cc	347	* @param netif The lwip network interface structure for this slipif
darran	0:55a05330f8cc	348	*/
darran	0:55a05330f8cc	349	void
darran	0:55a05330f8cc	350	slipif_poll(struct netif *netif)
darran	0:55a05330f8cc	351	{
darran	0:55a05330f8cc	352	struct pbuf *p;
darran	0:55a05330f8cc	353	struct slipif_priv *priv;
darran	0:55a05330f8cc	354
darran	0:55a05330f8cc	355	LWIP_ASSERT("netif != NULL", (netif != NULL));
darran	0:55a05330f8cc	356	LWIP_ASSERT("netif->state != NULL", (netif->state != NULL));
darran	0:55a05330f8cc	357
darran	0:55a05330f8cc	358	priv = netif->state;
darran	0:55a05330f8cc	359
darran	0:55a05330f8cc	360	while ((p = slipif_input(netif, SLIP_DONTBLOCK)) != NULL) {
darran	0:55a05330f8cc	361	if (netif->input(p, netif) != ERR_OK) {
darran	0:55a05330f8cc	362	pbuf_free(p);
darran	0:55a05330f8cc	363	}
darran	0:55a05330f8cc	364	}
darran	0:55a05330f8cc	365	}
darran	0:55a05330f8cc	366
darran	0:55a05330f8cc	367	#endif /* LWIP_HAVE_SLIPIF */

Repository toolbox

Export to desktop IDE

Build repository

Repository details

Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	18 Jun 2010
Imports:	7
Forks:	0
Commits:	2
Dependents:	0
Dependencies:	1
Followers:	1

lwip/netif/slipif.c@1:4218cacaf696, 2010-06-18 (annotated)

Who changed what in which revision?

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning