Bonjour - First step: AutoIP compiled in and working

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Darran Shepherd / Mbed 2 deprecated Bonjour

First step: AutoIP compiled in and working

lwip/core/raw.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	* Implementation of raw protocol PCBs for low-level handling of
darran	0:55a05330f8cc	4	* different types of protocols besides (or overriding) those
darran	0:55a05330f8cc	5	* already available in lwIP.
darran	0:55a05330f8cc	6	*
darran	0:55a05330f8cc	7	*/
darran	0:55a05330f8cc	8
darran	0:55a05330f8cc	9	/*
darran	0:55a05330f8cc	10	* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
darran	0:55a05330f8cc	11	* All rights reserved.
darran	0:55a05330f8cc	12	*
darran	0:55a05330f8cc	13	* Redistribution and use in source and binary forms, with or without modification,
darran	0:55a05330f8cc	14	* are permitted provided that the following conditions are met:
darran	0:55a05330f8cc	15	*
darran	0:55a05330f8cc	16	* 1. Redistributions of source code must retain the above copyright notice,
darran	0:55a05330f8cc	17	* this list of conditions and the following disclaimer.
darran	0:55a05330f8cc	18	* 2. Redistributions in binary form must reproduce the above copyright notice,
darran	0:55a05330f8cc	19	* this list of conditions and the following disclaimer in the documentation
darran	0:55a05330f8cc	20	* and/or other materials provided with the distribution.
darran	0:55a05330f8cc	21	* 3. The name of the author may not be used to endorse or promote products
darran	0:55a05330f8cc	22	* derived from this software without specific prior written permission.
darran	0:55a05330f8cc	23	*
darran	0:55a05330f8cc	24	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
darran	0:55a05330f8cc	25	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
darran	0:55a05330f8cc	26	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
darran	0:55a05330f8cc	27	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
darran	0:55a05330f8cc	28	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
darran	0:55a05330f8cc	29	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
darran	0:55a05330f8cc	30	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
darran	0:55a05330f8cc	31	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
darran	0:55a05330f8cc	32	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
darran	0:55a05330f8cc	33	* OF SUCH DAMAGE.
darran	0:55a05330f8cc	34	*
darran	0:55a05330f8cc	35	* This file is part of the lwIP TCP/IP stack.
darran	0:55a05330f8cc	36	*
darran	0:55a05330f8cc	37	* Author: Adam Dunkels <adam@sics.se>
darran	0:55a05330f8cc	38	*
darran	0:55a05330f8cc	39	*/
darran	0:55a05330f8cc	40
darran	0:55a05330f8cc	41	#include "lwip/opt.h"
darran	0:55a05330f8cc	42
darran	0:55a05330f8cc	43	#if LWIP_RAW /* don't build if not configured for use in lwipopts.h */
darran	0:55a05330f8cc	44
darran	0:55a05330f8cc	45	#include "lwip/def.h"
darran	0:55a05330f8cc	46	#include "lwip/memp.h"
darran	0:55a05330f8cc	47	#include "lwip/ip_addr.h"
darran	0:55a05330f8cc	48	#include "lwip/netif.h"
darran	0:55a05330f8cc	49	#include "lwip/raw.h"
darran	0:55a05330f8cc	50	#include "lwip/stats.h"
darran	0:55a05330f8cc	51	#include "arch/perf.h"
darran	0:55a05330f8cc	52
darran	0:55a05330f8cc	53	#include <string.h>
darran	0:55a05330f8cc	54
darran	0:55a05330f8cc	55	/** The list of RAW PCBs */
darran	0:55a05330f8cc	56	static struct raw_pcb *raw_pcbs;
darran	0:55a05330f8cc	57
darran	0:55a05330f8cc	58	/**
darran	0:55a05330f8cc	59	* Determine if in incoming IP packet is covered by a RAW PCB
darran	0:55a05330f8cc	60	* and if so, pass it to a user-provided receive callback function.
darran	0:55a05330f8cc	61	*
darran	0:55a05330f8cc	62	* Given an incoming IP datagram (as a chain of pbufs) this function
darran	0:55a05330f8cc	63	* finds a corresponding RAW PCB and calls the corresponding receive
darran	0:55a05330f8cc	64	* callback function.
darran	0:55a05330f8cc	65	*
darran	0:55a05330f8cc	66	* @param p pbuf to be demultiplexed to a RAW PCB.
darran	0:55a05330f8cc	67	* @param inp network interface on which the datagram was received.
darran	0:55a05330f8cc	68	* @return - 1 if the packet has been eaten by a RAW PCB receive
darran	0:55a05330f8cc	69	* callback function. The caller MAY NOT not reference the
darran	0:55a05330f8cc	70	* packet any longer, and MAY NOT call pbuf_free().
darran	0:55a05330f8cc	71	* @return - 0 if packet is not eaten (pbuf is still referenced by the
darran	0:55a05330f8cc	72	* caller).
darran	0:55a05330f8cc	73	*
darran	0:55a05330f8cc	74	*/
darran	0:55a05330f8cc	75	u8_t
darran	0:55a05330f8cc	76	raw_input(struct pbuf p, struct netif inp)
darran	0:55a05330f8cc	77	{
darran	0:55a05330f8cc	78	struct raw_pcb pcb, prev;
darran	0:55a05330f8cc	79	struct ip_hdr *iphdr;
darran	0:55a05330f8cc	80	s16_t proto;
darran	0:55a05330f8cc	81	u8_t eaten = 0;
darran	0:55a05330f8cc	82
darran	0:55a05330f8cc	83	LWIP_UNUSED_ARG(inp);
darran	0:55a05330f8cc	84
darran	0:55a05330f8cc	85	iphdr = (struct ip_hdr *)p->payload;
darran	0:55a05330f8cc	86	proto = IPH_PROTO(iphdr);
darran	0:55a05330f8cc	87
darran	0:55a05330f8cc	88	prev = NULL;
darran	0:55a05330f8cc	89	pcb = raw_pcbs;
darran	0:55a05330f8cc	90	/* loop through all raw pcbs until the packet is eaten by one */
darran	0:55a05330f8cc	91	/* this allows multiple pcbs to match against the packet by design */
darran	0:55a05330f8cc	92	while ((eaten == 0) && (pcb != NULL)) {
darran	0:55a05330f8cc	93	if ((pcb->protocol == proto) &&
darran	0:55a05330f8cc	94	(ip_addr_isany(&pcb->local_ip) \|\|
darran	0:55a05330f8cc	95	ip_addr_cmp(&(pcb->local_ip), &(iphdr->dest)))) {
darran	0:55a05330f8cc	96	#if IP_SOF_BROADCAST_RECV
darran	0:55a05330f8cc	97	/* broadcast filter? */
darran	0:55a05330f8cc	98	if ((pcb->so_options & SOF_BROADCAST) \|\| !ip_addr_isbroadcast(&(iphdr->dest), inp))
darran	0:55a05330f8cc	99	#endif /* IP_SOF_BROADCAST_RECV */
darran	0:55a05330f8cc	100	{
darran	0:55a05330f8cc	101	/* receive callback function available? */
darran	0:55a05330f8cc	102	if (pcb->recv != NULL) {
darran	0:55a05330f8cc	103	/* the receive callback function did not eat the packet? */
darran	0:55a05330f8cc	104	if (pcb->recv(pcb->recv_arg, pcb, p, &(iphdr->src)) != 0) {
darran	0:55a05330f8cc	105	/* receive function ate the packet */
darran	0:55a05330f8cc	106	p = NULL;
darran	0:55a05330f8cc	107	eaten = 1;
darran	0:55a05330f8cc	108	if (prev != NULL) {
darran	0:55a05330f8cc	109	/* move the pcb to the front of raw_pcbs so that is
darran	0:55a05330f8cc	110	found faster next time */
darran	0:55a05330f8cc	111	prev->next = pcb->next;
darran	0:55a05330f8cc	112	pcb->next = raw_pcbs;
darran	0:55a05330f8cc	113	raw_pcbs = pcb;
darran	0:55a05330f8cc	114	}
darran	0:55a05330f8cc	115	}
darran	0:55a05330f8cc	116	}
darran	0:55a05330f8cc	117	/* no receive callback function was set for this raw PCB */
darran	0:55a05330f8cc	118	}
darran	0:55a05330f8cc	119	/* drop the packet */
darran	0:55a05330f8cc	120	}
darran	0:55a05330f8cc	121	prev = pcb;
darran	0:55a05330f8cc	122	pcb = pcb->next;
darran	0:55a05330f8cc	123	}
darran	0:55a05330f8cc	124	return eaten;
darran	0:55a05330f8cc	125	}
darran	0:55a05330f8cc	126
darran	0:55a05330f8cc	127	/**
darran	0:55a05330f8cc	128	* Bind a RAW PCB.
darran	0:55a05330f8cc	129	*
darran	0:55a05330f8cc	130	* @param pcb RAW PCB to be bound with a local address ipaddr.
darran	0:55a05330f8cc	131	* @param ipaddr local IP address to bind with. Use IP_ADDR_ANY to
darran	0:55a05330f8cc	132	* bind to all local interfaces.
darran	0:55a05330f8cc	133	*
darran	0:55a05330f8cc	134	* @return lwIP error code.
darran	0:55a05330f8cc	135	* - ERR_OK. Successful. No error occured.
darran	0:55a05330f8cc	136	* - ERR_USE. The specified IP address is already bound to by
darran	0:55a05330f8cc	137	* another RAW PCB.
darran	0:55a05330f8cc	138	*
darran	0:55a05330f8cc	139	* @see raw_disconnect()
darran	0:55a05330f8cc	140	*/
darran	0:55a05330f8cc	141	err_t
darran	0:55a05330f8cc	142	raw_bind(struct raw_pcb pcb, ip_addr_t ipaddr)
darran	0:55a05330f8cc	143	{
darran	0:55a05330f8cc	144	ip_addr_set(&pcb->local_ip, ipaddr);
darran	0:55a05330f8cc	145	return ERR_OK;
darran	0:55a05330f8cc	146	}
darran	0:55a05330f8cc	147
darran	0:55a05330f8cc	148	/**
darran	0:55a05330f8cc	149	* Connect an RAW PCB. This function is required by upper layers
darran	0:55a05330f8cc	150	* of lwip. Using the raw api you could use raw_sendto() instead
darran	0:55a05330f8cc	151	*
darran	0:55a05330f8cc	152	* This will associate the RAW PCB with the remote address.
darran	0:55a05330f8cc	153	*
darran	0:55a05330f8cc	154	* @param pcb RAW PCB to be connected with remote address ipaddr and port.
darran	0:55a05330f8cc	155	* @param ipaddr remote IP address to connect with.
darran	0:55a05330f8cc	156	*
darran	0:55a05330f8cc	157	* @return lwIP error code
darran	0:55a05330f8cc	158	*
darran	0:55a05330f8cc	159	* @see raw_disconnect() and raw_sendto()
darran	0:55a05330f8cc	160	*/
darran	0:55a05330f8cc	161	err_t
darran	0:55a05330f8cc	162	raw_connect(struct raw_pcb pcb, ip_addr_t ipaddr)
darran	0:55a05330f8cc	163	{
darran	0:55a05330f8cc	164	ip_addr_set(&pcb->remote_ip, ipaddr);
darran	0:55a05330f8cc	165	return ERR_OK;
darran	0:55a05330f8cc	166	}
darran	0:55a05330f8cc	167
darran	0:55a05330f8cc	168
darran	0:55a05330f8cc	169	/**
darran	0:55a05330f8cc	170	* Set the callback function for received packets that match the
darran	0:55a05330f8cc	171	* raw PCB's protocol and binding.
darran	0:55a05330f8cc	172	*
darran	0:55a05330f8cc	173	* The callback function MUST either
darran	0:55a05330f8cc	174	* - eat the packet by calling pbuf_free() and returning non-zero. The
darran	0:55a05330f8cc	175	* packet will not be passed to other raw PCBs or other protocol layers.
darran	0:55a05330f8cc	176	* - not free the packet, and return zero. The packet will be matched
darran	0:55a05330f8cc	177	* against further PCBs and/or forwarded to another protocol layers.
darran	0:55a05330f8cc	178	*
darran	0:55a05330f8cc	179	* @return non-zero if the packet was free()d, zero if the packet remains
darran	0:55a05330f8cc	180	* available for others.
darran	0:55a05330f8cc	181	*/
darran	0:55a05330f8cc	182	void
darran	0:55a05330f8cc	183	raw_recv(struct raw_pcb pcb, raw_recv_fn recv, void recv_arg)
darran	0:55a05330f8cc	184	{
darran	0:55a05330f8cc	185	/* remember recv() callback and user data */
darran	0:55a05330f8cc	186	pcb->recv = recv;
darran	0:55a05330f8cc	187	pcb->recv_arg = recv_arg;
darran	0:55a05330f8cc	188	}
darran	0:55a05330f8cc	189
darran	0:55a05330f8cc	190	/**
darran	0:55a05330f8cc	191	* Send the raw IP packet to the given address. Note that actually you cannot
darran	0:55a05330f8cc	192	* modify the IP headers (this is inconsistent with the receive callback where
darran	0:55a05330f8cc	193	* you actually get the IP headers), you can only specify the IP payload here.
darran	0:55a05330f8cc	194	* It requires some more changes in lwIP. (there will be a raw_send() function
darran	0:55a05330f8cc	195	* then.)
darran	0:55a05330f8cc	196	*
darran	0:55a05330f8cc	197	* @param pcb the raw pcb which to send
darran	0:55a05330f8cc	198	* @param p the IP payload to send
darran	0:55a05330f8cc	199	* @param ipaddr the destination address of the IP packet
darran	0:55a05330f8cc	200	*
darran	0:55a05330f8cc	201	*/
darran	0:55a05330f8cc	202	err_t
darran	0:55a05330f8cc	203	raw_sendto(struct raw_pcb pcb, struct pbuf p, ip_addr_t *ipaddr)
darran	0:55a05330f8cc	204	{
darran	0:55a05330f8cc	205	err_t err;
darran	0:55a05330f8cc	206	struct netif *netif;
darran	0:55a05330f8cc	207	ip_addr_t *src_ip;
darran	0:55a05330f8cc	208	struct pbuf q; / q will be sent down the stack */
darran	0:55a05330f8cc	209
darran	0:55a05330f8cc	210	LWIP_DEBUGF(RAW_DEBUG \| LWIP_DBG_TRACE, ("raw_sendto\n"));
darran	0:55a05330f8cc	211
darran	0:55a05330f8cc	212	/* not enough space to add an IP header to first pbuf in given p chain? */
darran	0:55a05330f8cc	213	if (pbuf_header(p, IP_HLEN)) {
darran	0:55a05330f8cc	214	/* allocate header in new pbuf */
darran	0:55a05330f8cc	215	q = pbuf_alloc(PBUF_IP, 0, PBUF_RAM);
darran	0:55a05330f8cc	216	/* new header pbuf could not be allocated? */
darran	0:55a05330f8cc	217	if (q == NULL) {
darran	0:55a05330f8cc	218	LWIP_DEBUGF(RAW_DEBUG \| LWIP_DBG_TRACE \| LWIP_DBG_LEVEL_SERIOUS, ("raw_sendto: could not allocate header\n"));
darran	0:55a05330f8cc	219	return ERR_MEM;
darran	0:55a05330f8cc	220	}
darran	0:55a05330f8cc	221	/* chain header q in front of given pbuf p */
darran	0:55a05330f8cc	222	pbuf_chain(q, p);
darran	0:55a05330f8cc	223	/* { first pbuf q points to header pbuf } */
darran	0:55a05330f8cc	224	LWIP_DEBUGF(RAW_DEBUG, ("raw_sendto: added header pbuf %p before given pbuf %p\n", (void )q, (void )p));
darran	0:55a05330f8cc	225	} else {
darran	0:55a05330f8cc	226	/* first pbuf q equals given pbuf */
darran	0:55a05330f8cc	227	q = p;
darran	0:55a05330f8cc	228	if(pbuf_header(q, -IP_HLEN)) {
darran	0:55a05330f8cc	229	LWIP_ASSERT("Can't restore header we just removed!", 0);
darran	0:55a05330f8cc	230	return ERR_MEM;
darran	0:55a05330f8cc	231	}
darran	0:55a05330f8cc	232	}
darran	0:55a05330f8cc	233
darran	0:55a05330f8cc	234	if ((netif = ip_route(ipaddr)) == NULL) {
darran	0:55a05330f8cc	235	LWIP_DEBUGF(RAW_DEBUG \| LWIP_DBG_LEVEL_WARNING, ("raw_sendto: No route to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
darran	0:55a05330f8cc	236	ip4_addr1_16(ipaddr), ip4_addr2_16(ipaddr), ip4_addr3_16(ipaddr), ip4_addr4_16(ipaddr)));
darran	0:55a05330f8cc	237	/* free any temporary header pbuf allocated by pbuf_header() */
darran	0:55a05330f8cc	238	if (q != p) {
darran	0:55a05330f8cc	239	pbuf_free(q);
darran	0:55a05330f8cc	240	}
darran	0:55a05330f8cc	241	return ERR_RTE;
darran	0:55a05330f8cc	242	}
darran	0:55a05330f8cc	243
darran	0:55a05330f8cc	244	#if IP_SOF_BROADCAST
darran	0:55a05330f8cc	245	/* broadcast filter? */
darran	0:55a05330f8cc	246	if (((pcb->so_options & SOF_BROADCAST) == 0) && ip_addr_isbroadcast(ipaddr, netif)) {
darran	0:55a05330f8cc	247	LWIP_DEBUGF(RAW_DEBUG \| LWIP_DBG_LEVEL_WARNING, ("raw_sendto: SOF_BROADCAST not enabled on pcb %p\n", (void *)pcb));
darran	0:55a05330f8cc	248	/* free any temporary header pbuf allocated by pbuf_header() */
darran	0:55a05330f8cc	249	if (q != p) {
darran	0:55a05330f8cc	250	pbuf_free(q);
darran	0:55a05330f8cc	251	}
darran	0:55a05330f8cc	252	return ERR_VAL;
darran	0:55a05330f8cc	253	}
darran	0:55a05330f8cc	254	#endif /* IP_SOF_BROADCAST */
darran	0:55a05330f8cc	255
darran	0:55a05330f8cc	256	if (ip_addr_isany(&pcb->local_ip)) {
darran	0:55a05330f8cc	257	/* use outgoing network interface IP address as source address */
darran	0:55a05330f8cc	258	src_ip = &(netif->ip_addr);
darran	0:55a05330f8cc	259	} else {
darran	0:55a05330f8cc	260	/* use RAW PCB local IP address as source address */
darran	0:55a05330f8cc	261	src_ip = &(pcb->local_ip);
darran	0:55a05330f8cc	262	}
darran	0:55a05330f8cc	263
darran	0:55a05330f8cc	264	#if LWIP_NETIF_HWADDRHINT
darran	0:55a05330f8cc	265	netif->addr_hint = &(pcb->addr_hint);
darran	0:55a05330f8cc	266	#endif /* LWIP_NETIF_HWADDRHINT*/
darran	0:55a05330f8cc	267	err = ip_output_if (q, src_ip, ipaddr, pcb->ttl, pcb->tos, pcb->protocol, netif);
darran	0:55a05330f8cc	268	#if LWIP_NETIF_HWADDRHINT
darran	0:55a05330f8cc	269	netif->addr_hint = NULL;
darran	0:55a05330f8cc	270	#endif /* LWIP_NETIF_HWADDRHINT*/
darran	0:55a05330f8cc	271
darran	0:55a05330f8cc	272	/* did we chain a header earlier? */
darran	0:55a05330f8cc	273	if (q != p) {
darran	0:55a05330f8cc	274	/* free the header */
darran	0:55a05330f8cc	275	pbuf_free(q);
darran	0:55a05330f8cc	276	}
darran	0:55a05330f8cc	277	return err;
darran	0:55a05330f8cc	278	}
darran	0:55a05330f8cc	279
darran	0:55a05330f8cc	280	/**
darran	0:55a05330f8cc	281	* Send the raw IP packet to the address given by raw_connect()
darran	0:55a05330f8cc	282	*
darran	0:55a05330f8cc	283	* @param pcb the raw pcb which to send
darran	0:55a05330f8cc	284	* @param p the IP payload to send
darran	0:55a05330f8cc	285	*
darran	0:55a05330f8cc	286	*/
darran	0:55a05330f8cc	287	err_t
darran	0:55a05330f8cc	288	raw_send(struct raw_pcb pcb, struct pbuf p)
darran	0:55a05330f8cc	289	{
darran	0:55a05330f8cc	290	return raw_sendto(pcb, p, &pcb->remote_ip);
darran	0:55a05330f8cc	291	}
darran	0:55a05330f8cc	292
darran	0:55a05330f8cc	293	/**
darran	0:55a05330f8cc	294	* Remove an RAW PCB.
darran	0:55a05330f8cc	295	*
darran	0:55a05330f8cc	296	* @param pcb RAW PCB to be removed. The PCB is removed from the list of
darran	0:55a05330f8cc	297	* RAW PCB's and the data structure is freed from memory.
darran	0:55a05330f8cc	298	*
darran	0:55a05330f8cc	299	* @see raw_new()
darran	0:55a05330f8cc	300	*/
darran	0:55a05330f8cc	301	void
darran	0:55a05330f8cc	302	raw_remove(struct raw_pcb *pcb)
darran	0:55a05330f8cc	303	{
darran	0:55a05330f8cc	304	struct raw_pcb *pcb2;
darran	0:55a05330f8cc	305	/* pcb to be removed is first in list? */
darran	0:55a05330f8cc	306	if (raw_pcbs == pcb) {
darran	0:55a05330f8cc	307	/* make list start at 2nd pcb */
darran	0:55a05330f8cc	308	raw_pcbs = raw_pcbs->next;
darran	0:55a05330f8cc	309	/* pcb not 1st in list */
darran	0:55a05330f8cc	310	} else {
darran	0:55a05330f8cc	311	for(pcb2 = raw_pcbs; pcb2 != NULL; pcb2 = pcb2->next) {
darran	0:55a05330f8cc	312	/* find pcb in raw_pcbs list */
darran	0:55a05330f8cc	313	if (pcb2->next != NULL && pcb2->next == pcb) {
darran	0:55a05330f8cc	314	/* remove pcb from list */
darran	0:55a05330f8cc	315	pcb2->next = pcb->next;
darran	0:55a05330f8cc	316	}
darran	0:55a05330f8cc	317	}
darran	0:55a05330f8cc	318	}
darran	0:55a05330f8cc	319	memp_free(MEMP_RAW_PCB, pcb);
darran	0:55a05330f8cc	320	}
darran	0:55a05330f8cc	321
darran	0:55a05330f8cc	322	/**
darran	0:55a05330f8cc	323	* Create a RAW PCB.
darran	0:55a05330f8cc	324	*
darran	0:55a05330f8cc	325	* @return The RAW PCB which was created. NULL if the PCB data structure
darran	0:55a05330f8cc	326	* could not be allocated.
darran	0:55a05330f8cc	327	*
darran	0:55a05330f8cc	328	* @param proto the protocol number of the IPs payload (e.g. IP_PROTO_ICMP)
darran	0:55a05330f8cc	329	*
darran	0:55a05330f8cc	330	* @see raw_remove()
darran	0:55a05330f8cc	331	*/
darran	0:55a05330f8cc	332	struct raw_pcb *
darran	0:55a05330f8cc	333	raw_new(u8_t proto)
darran	0:55a05330f8cc	334	{
darran	0:55a05330f8cc	335	struct raw_pcb *pcb;
darran	0:55a05330f8cc	336
darran	0:55a05330f8cc	337	LWIP_DEBUGF(RAW_DEBUG \| LWIP_DBG_TRACE, ("raw_new\n"));
darran	0:55a05330f8cc	338
darran	0:55a05330f8cc	339	pcb = (struct raw_pcb *)memp_malloc(MEMP_RAW_PCB);
darran	0:55a05330f8cc	340	/* could allocate RAW PCB? */
darran	0:55a05330f8cc	341	if (pcb != NULL) {
darran	0:55a05330f8cc	342	/* initialize PCB to all zeroes */
darran	0:55a05330f8cc	343	memset(pcb, 0, sizeof(struct raw_pcb));
darran	0:55a05330f8cc	344	pcb->protocol = proto;
darran	0:55a05330f8cc	345	pcb->ttl = RAW_TTL;
darran	0:55a05330f8cc	346	pcb->next = raw_pcbs;
darran	0:55a05330f8cc	347	raw_pcbs = pcb;
darran	0:55a05330f8cc	348	}
darran	0:55a05330f8cc	349	return pcb;
darran	0:55a05330f8cc	350	}
darran	0:55a05330f8cc	351
darran	0:55a05330f8cc	352	#endif /* LWIP_RAW */

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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/core/raw.c@1:4218cacaf696, 2010-06-18 (annotated)

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