XBeeWiFi_common - EthernetNetIf Compatibility.

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ban4jp - / XBeeWiFi_common

EthernetNetIf Compatibility.

Dependents: XBeeWiFi_SPI_example

Fork of NetServicesSource by Donatien Garnier

lwip/core/raw.c@0:632c9925f013, 2010-06-11 (annotated)

Committer:: donatien
Date:: Fri Jun 11 16:05:15 2010 +0000
Revision:: 0:632c9925f013
Child:: 5:dd63a1e02b1b

Who changed what in which revision?

User	Revision	Line number	New contents of line
donatien	0:632c9925f013	1	/**
donatien	0:632c9925f013	2	* @file
donatien	0:632c9925f013	3	* Implementation of raw protocol PCBs for low-level handling of
donatien	0:632c9925f013	4	* different types of protocols besides (or overriding) those
donatien	0:632c9925f013	5	* already available in lwIP.
donatien	0:632c9925f013	6	*
donatien	0:632c9925f013	7	*/
donatien	0:632c9925f013	8
donatien	0:632c9925f013	9	/*
donatien	0:632c9925f013	10	* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
donatien	0:632c9925f013	11	* All rights reserved.
donatien	0:632c9925f013	12	*
donatien	0:632c9925f013	13	* Redistribution and use in source and binary forms, with or without modification,
donatien	0:632c9925f013	14	* are permitted provided that the following conditions are met:
donatien	0:632c9925f013	15	*
donatien	0:632c9925f013	16	* 1. Redistributions of source code must retain the above copyright notice,
donatien	0:632c9925f013	17	* this list of conditions and the following disclaimer.
donatien	0:632c9925f013	18	* 2. Redistributions in binary form must reproduce the above copyright notice,
donatien	0:632c9925f013	19	* this list of conditions and the following disclaimer in the documentation
donatien	0:632c9925f013	20	* and/or other materials provided with the distribution.
donatien	0:632c9925f013	21	* 3. The name of the author may not be used to endorse or promote products
donatien	0:632c9925f013	22	* derived from this software without specific prior written permission.
donatien	0:632c9925f013	23	*
donatien	0:632c9925f013	24	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
donatien	0:632c9925f013	25	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
donatien	0:632c9925f013	26	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
donatien	0:632c9925f013	27	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
donatien	0:632c9925f013	28	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
donatien	0:632c9925f013	29	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
donatien	0:632c9925f013	30	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
donatien	0:632c9925f013	31	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
donatien	0:632c9925f013	32	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
donatien	0:632c9925f013	33	* OF SUCH DAMAGE.
donatien	0:632c9925f013	34	*
donatien	0:632c9925f013	35	* This file is part of the lwIP TCP/IP stack.
donatien	0:632c9925f013	36	*
donatien	0:632c9925f013	37	* Author: Adam Dunkels <adam@sics.se>
donatien	0:632c9925f013	38	*
donatien	0:632c9925f013	39	*/
donatien	0:632c9925f013	40
donatien	0:632c9925f013	41	#include "lwip/opt.h"
donatien	0:632c9925f013	42
donatien	0:632c9925f013	43	#if LWIP_RAW /* don't build if not configured for use in lwipopts.h */
donatien	0:632c9925f013	44
donatien	0:632c9925f013	45	#include "lwip/def.h"
donatien	0:632c9925f013	46	#include "lwip/memp.h"
donatien	0:632c9925f013	47	#include "lwip/ip_addr.h"
donatien	0:632c9925f013	48	#include "lwip/netif.h"
donatien	0:632c9925f013	49	#include "lwip/raw.h"
donatien	0:632c9925f013	50	#include "lwip/stats.h"
donatien	0:632c9925f013	51	#include "arch/perf.h"
donatien	0:632c9925f013	52
donatien	0:632c9925f013	53	#include <string.h>
donatien	0:632c9925f013	54
donatien	0:632c9925f013	55	/** The list of RAW PCBs */
donatien	0:632c9925f013	56	static struct raw_pcb *raw_pcbs;
donatien	0:632c9925f013	57
donatien	0:632c9925f013	58	/**
donatien	0:632c9925f013	59	* Determine if in incoming IP packet is covered by a RAW PCB
donatien	0:632c9925f013	60	* and if so, pass it to a user-provided receive callback function.
donatien	0:632c9925f013	61	*
donatien	0:632c9925f013	62	* Given an incoming IP datagram (as a chain of pbufs) this function
donatien	0:632c9925f013	63	* finds a corresponding RAW PCB and calls the corresponding receive
donatien	0:632c9925f013	64	* callback function.
donatien	0:632c9925f013	65	*
donatien	0:632c9925f013	66	* @param p pbuf to be demultiplexed to a RAW PCB.
donatien	0:632c9925f013	67	* @param inp network interface on which the datagram was received.
donatien	0:632c9925f013	68	* @return - 1 if the packet has been eaten by a RAW PCB receive
donatien	0:632c9925f013	69	* callback function. The caller MAY NOT not reference the
donatien	0:632c9925f013	70	* packet any longer, and MAY NOT call pbuf_free().
donatien	0:632c9925f013	71	* @return - 0 if packet is not eaten (pbuf is still referenced by the
donatien	0:632c9925f013	72	* caller).
donatien	0:632c9925f013	73	*
donatien	0:632c9925f013	74	*/
donatien	0:632c9925f013	75	u8_t
donatien	0:632c9925f013	76	raw_input(struct pbuf p, struct netif inp)
donatien	0:632c9925f013	77	{
donatien	0:632c9925f013	78	struct raw_pcb pcb, prev;
donatien	0:632c9925f013	79	struct ip_hdr *iphdr;
donatien	0:632c9925f013	80	s16_t proto;
donatien	0:632c9925f013	81	u8_t eaten = 0;
donatien	0:632c9925f013	82
donatien	0:632c9925f013	83	LWIP_UNUSED_ARG(inp);
donatien	0:632c9925f013	84
donatien	0:632c9925f013	85	iphdr = (struct ip_hdr *)p->payload;
donatien	0:632c9925f013	86	proto = IPH_PROTO(iphdr);
donatien	0:632c9925f013	87
donatien	0:632c9925f013	88	prev = NULL;
donatien	0:632c9925f013	89	pcb = raw_pcbs;
donatien	0:632c9925f013	90	/* loop through all raw pcbs until the packet is eaten by one */
donatien	0:632c9925f013	91	/* this allows multiple pcbs to match against the packet by design */
donatien	0:632c9925f013	92	while ((eaten == 0) && (pcb != NULL)) {
donatien	0:632c9925f013	93	if ((pcb->protocol == proto) &&
donatien	0:632c9925f013	94	(ip_addr_isany(&pcb->local_ip) \|\|
donatien	0:632c9925f013	95	ip_addr_cmp(&(pcb->local_ip), &(iphdr->dest)))) {
donatien	0:632c9925f013	96	#if IP_SOF_BROADCAST_RECV
donatien	0:632c9925f013	97	/* broadcast filter? */
donatien	0:632c9925f013	98	if ((pcb->so_options & SOF_BROADCAST) \|\| !ip_addr_isbroadcast(&(iphdr->dest), inp))
donatien	0:632c9925f013	99	#endif /* IP_SOF_BROADCAST_RECV */
donatien	0:632c9925f013	100	{
donatien	0:632c9925f013	101	/* receive callback function available? */
donatien	0:632c9925f013	102	if (pcb->recv != NULL) {
donatien	0:632c9925f013	103	/* the receive callback function did not eat the packet? */
donatien	0:632c9925f013	104	if (pcb->recv(pcb->recv_arg, pcb, p, &(iphdr->src)) != 0) {
donatien	0:632c9925f013	105	/* receive function ate the packet */
donatien	0:632c9925f013	106	p = NULL;
donatien	0:632c9925f013	107	eaten = 1;
donatien	0:632c9925f013	108	if (prev != NULL) {
donatien	0:632c9925f013	109	/* move the pcb to the front of raw_pcbs so that is
donatien	0:632c9925f013	110	found faster next time */
donatien	0:632c9925f013	111	prev->next = pcb->next;
donatien	0:632c9925f013	112	pcb->next = raw_pcbs;
donatien	0:632c9925f013	113	raw_pcbs = pcb;
donatien	0:632c9925f013	114	}
donatien	0:632c9925f013	115	}
donatien	0:632c9925f013	116	}
donatien	0:632c9925f013	117	/* no receive callback function was set for this raw PCB */
donatien	0:632c9925f013	118	}
donatien	0:632c9925f013	119	/* drop the packet */
donatien	0:632c9925f013	120	}
donatien	0:632c9925f013	121	prev = pcb;
donatien	0:632c9925f013	122	pcb = pcb->next;
donatien	0:632c9925f013	123	}
donatien	0:632c9925f013	124	return eaten;
donatien	0:632c9925f013	125	}
donatien	0:632c9925f013	126
donatien	0:632c9925f013	127	/**
donatien	0:632c9925f013	128	* Bind a RAW PCB.
donatien	0:632c9925f013	129	*
donatien	0:632c9925f013	130	* @param pcb RAW PCB to be bound with a local address ipaddr.
donatien	0:632c9925f013	131	* @param ipaddr local IP address to bind with. Use IP_ADDR_ANY to
donatien	0:632c9925f013	132	* bind to all local interfaces.
donatien	0:632c9925f013	133	*
donatien	0:632c9925f013	134	* @return lwIP error code.
donatien	0:632c9925f013	135	* - ERR_OK. Successful. No error occured.
donatien	0:632c9925f013	136	* - ERR_USE. The specified IP address is already bound to by
donatien	0:632c9925f013	137	* another RAW PCB.
donatien	0:632c9925f013	138	*
donatien	0:632c9925f013	139	* @see raw_disconnect()
donatien	0:632c9925f013	140	*/
donatien	0:632c9925f013	141	err_t
donatien	0:632c9925f013	142	raw_bind(struct raw_pcb pcb, ip_addr_t ipaddr)
donatien	0:632c9925f013	143	{
donatien	0:632c9925f013	144	ip_addr_set(&pcb->local_ip, ipaddr);
donatien	0:632c9925f013	145	return ERR_OK;
donatien	0:632c9925f013	146	}
donatien	0:632c9925f013	147
donatien	0:632c9925f013	148	/**
donatien	0:632c9925f013	149	* Connect an RAW PCB. This function is required by upper layers
donatien	0:632c9925f013	150	* of lwip. Using the raw api you could use raw_sendto() instead
donatien	0:632c9925f013	151	*
donatien	0:632c9925f013	152	* This will associate the RAW PCB with the remote address.
donatien	0:632c9925f013	153	*
donatien	0:632c9925f013	154	* @param pcb RAW PCB to be connected with remote address ipaddr and port.
donatien	0:632c9925f013	155	* @param ipaddr remote IP address to connect with.
donatien	0:632c9925f013	156	*
donatien	0:632c9925f013	157	* @return lwIP error code
donatien	0:632c9925f013	158	*
donatien	0:632c9925f013	159	* @see raw_disconnect() and raw_sendto()
donatien	0:632c9925f013	160	*/
donatien	0:632c9925f013	161	err_t
donatien	0:632c9925f013	162	raw_connect(struct raw_pcb pcb, ip_addr_t ipaddr)
donatien	0:632c9925f013	163	{
donatien	0:632c9925f013	164	ip_addr_set(&pcb->remote_ip, ipaddr);
donatien	0:632c9925f013	165	return ERR_OK;
donatien	0:632c9925f013	166	}
donatien	0:632c9925f013	167
donatien	0:632c9925f013	168
donatien	0:632c9925f013	169	/**
donatien	0:632c9925f013	170	* Set the callback function for received packets that match the
donatien	0:632c9925f013	171	* raw PCB's protocol and binding.
donatien	0:632c9925f013	172	*
donatien	0:632c9925f013	173	* The callback function MUST either
donatien	0:632c9925f013	174	* - eat the packet by calling pbuf_free() and returning non-zero. The
donatien	0:632c9925f013	175	* packet will not be passed to other raw PCBs or other protocol layers.
donatien	0:632c9925f013	176	* - not free the packet, and return zero. The packet will be matched
donatien	0:632c9925f013	177	* against further PCBs and/or forwarded to another protocol layers.
donatien	0:632c9925f013	178	*
donatien	0:632c9925f013	179	* @return non-zero if the packet was free()d, zero if the packet remains
donatien	0:632c9925f013	180	* available for others.
donatien	0:632c9925f013	181	*/
donatien	0:632c9925f013	182	void
donatien	0:632c9925f013	183	raw_recv(struct raw_pcb pcb, raw_recv_fn recv, void recv_arg)
donatien	0:632c9925f013	184	{
donatien	0:632c9925f013	185	/* remember recv() callback and user data */
donatien	0:632c9925f013	186	pcb->recv = recv;
donatien	0:632c9925f013	187	pcb->recv_arg = recv_arg;
donatien	0:632c9925f013	188	}
donatien	0:632c9925f013	189
donatien	0:632c9925f013	190	/**
donatien	0:632c9925f013	191	* Send the raw IP packet to the given address. Note that actually you cannot
donatien	0:632c9925f013	192	* modify the IP headers (this is inconsistent with the receive callback where
donatien	0:632c9925f013	193	* you actually get the IP headers), you can only specify the IP payload here.
donatien	0:632c9925f013	194	* It requires some more changes in lwIP. (there will be a raw_send() function
donatien	0:632c9925f013	195	* then.)
donatien	0:632c9925f013	196	*
donatien	0:632c9925f013	197	* @param pcb the raw pcb which to send
donatien	0:632c9925f013	198	* @param p the IP payload to send
donatien	0:632c9925f013	199	* @param ipaddr the destination address of the IP packet
donatien	0:632c9925f013	200	*
donatien	0:632c9925f013	201	*/
donatien	0:632c9925f013	202	err_t
donatien	0:632c9925f013	203	raw_sendto(struct raw_pcb pcb, struct pbuf p, ip_addr_t *ipaddr)
donatien	0:632c9925f013	204	{
donatien	0:632c9925f013	205	err_t err;
donatien	0:632c9925f013	206	struct netif *netif;
donatien	0:632c9925f013	207	ip_addr_t *src_ip;
donatien	0:632c9925f013	208	struct pbuf q; / q will be sent down the stack */
donatien	0:632c9925f013	209
donatien	0:632c9925f013	210	LWIP_DEBUGF(RAW_DEBUG \| LWIP_DBG_TRACE, ("raw_sendto\n"));
donatien	0:632c9925f013	211
donatien	0:632c9925f013	212	/* not enough space to add an IP header to first pbuf in given p chain? */
donatien	0:632c9925f013	213	if (pbuf_header(p, IP_HLEN)) {
donatien	0:632c9925f013	214	/* allocate header in new pbuf */
donatien	0:632c9925f013	215	q = pbuf_alloc(PBUF_IP, 0, PBUF_RAM);
donatien	0:632c9925f013	216	/* new header pbuf could not be allocated? */
donatien	0:632c9925f013	217	if (q == NULL) {
donatien	0:632c9925f013	218	LWIP_DEBUGF(RAW_DEBUG \| LWIP_DBG_TRACE \| LWIP_DBG_LEVEL_SERIOUS, ("raw_sendto: could not allocate header\n"));
donatien	0:632c9925f013	219	return ERR_MEM;
donatien	0:632c9925f013	220	}
donatien	0:632c9925f013	221	/* chain header q in front of given pbuf p */
donatien	0:632c9925f013	222	pbuf_chain(q, p);
donatien	0:632c9925f013	223	/* { first pbuf q points to header pbuf } */
donatien	0:632c9925f013	224	LWIP_DEBUGF(RAW_DEBUG, ("raw_sendto: added header pbuf %p before given pbuf %p\n", (void )q, (void )p));
donatien	0:632c9925f013	225	} else {
donatien	0:632c9925f013	226	/* first pbuf q equals given pbuf */
donatien	0:632c9925f013	227	q = p;
donatien	0:632c9925f013	228	if(pbuf_header(q, -IP_HLEN)) {
donatien	0:632c9925f013	229	LWIP_ASSERT("Can't restore header we just removed!", 0);
donatien	0:632c9925f013	230	return ERR_MEM;
donatien	0:632c9925f013	231	}
donatien	0:632c9925f013	232	}
donatien	0:632c9925f013	233
donatien	0:632c9925f013	234	if ((netif = ip_route(ipaddr)) == NULL) {
donatien	0:632c9925f013	235	LWIP_DEBUGF(RAW_DEBUG \| LWIP_DBG_LEVEL_WARNING, ("raw_sendto: No route to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
donatien	0:632c9925f013	236	ip4_addr1_16(ipaddr), ip4_addr2_16(ipaddr), ip4_addr3_16(ipaddr), ip4_addr4_16(ipaddr)));
donatien	0:632c9925f013	237	/* free any temporary header pbuf allocated by pbuf_header() */
donatien	0:632c9925f013	238	if (q != p) {
donatien	0:632c9925f013	239	pbuf_free(q);
donatien	0:632c9925f013	240	}
donatien	0:632c9925f013	241	return ERR_RTE;
donatien	0:632c9925f013	242	}
donatien	0:632c9925f013	243
donatien	0:632c9925f013	244	#if IP_SOF_BROADCAST
donatien	0:632c9925f013	245	/* broadcast filter? */
donatien	0:632c9925f013	246	if (((pcb->so_options & SOF_BROADCAST) == 0) && ip_addr_isbroadcast(ipaddr, netif)) {
donatien	0:632c9925f013	247	LWIP_DEBUGF(RAW_DEBUG \| LWIP_DBG_LEVEL_WARNING, ("raw_sendto: SOF_BROADCAST not enabled on pcb %p\n", (void *)pcb));
donatien	0:632c9925f013	248	/* free any temporary header pbuf allocated by pbuf_header() */
donatien	0:632c9925f013	249	if (q != p) {
donatien	0:632c9925f013	250	pbuf_free(q);
donatien	0:632c9925f013	251	}
donatien	0:632c9925f013	252	return ERR_VAL;
donatien	0:632c9925f013	253	}
donatien	0:632c9925f013	254	#endif /* IP_SOF_BROADCAST */
donatien	0:632c9925f013	255
donatien	0:632c9925f013	256	if (ip_addr_isany(&pcb->local_ip)) {
donatien	0:632c9925f013	257	/* use outgoing network interface IP address as source address */
donatien	0:632c9925f013	258	src_ip = &(netif->ip_addr);
donatien	0:632c9925f013	259	} else {
donatien	0:632c9925f013	260	/* use RAW PCB local IP address as source address */
donatien	0:632c9925f013	261	src_ip = &(pcb->local_ip);
donatien	0:632c9925f013	262	}
donatien	0:632c9925f013	263
donatien	0:632c9925f013	264	#if LWIP_NETIF_HWADDRHINT
donatien	0:632c9925f013	265	netif->addr_hint = &(pcb->addr_hint);
donatien	0:632c9925f013	266	#endif /* LWIP_NETIF_HWADDRHINT*/
donatien	0:632c9925f013	267	err = ip_output_if (q, src_ip, ipaddr, pcb->ttl, pcb->tos, pcb->protocol, netif);
donatien	0:632c9925f013	268	#if LWIP_NETIF_HWADDRHINT
donatien	0:632c9925f013	269	netif->addr_hint = NULL;
donatien	0:632c9925f013	270	#endif /* LWIP_NETIF_HWADDRHINT*/
donatien	0:632c9925f013	271
donatien	0:632c9925f013	272	/* did we chain a header earlier? */
donatien	0:632c9925f013	273	if (q != p) {
donatien	0:632c9925f013	274	/* free the header */
donatien	0:632c9925f013	275	pbuf_free(q);
donatien	0:632c9925f013	276	}
donatien	0:632c9925f013	277	return err;
donatien	0:632c9925f013	278	}
donatien	0:632c9925f013	279
donatien	0:632c9925f013	280	/**
donatien	0:632c9925f013	281	* Send the raw IP packet to the address given by raw_connect()
donatien	0:632c9925f013	282	*
donatien	0:632c9925f013	283	* @param pcb the raw pcb which to send
donatien	0:632c9925f013	284	* @param p the IP payload to send
donatien	0:632c9925f013	285	*
donatien	0:632c9925f013	286	*/
donatien	0:632c9925f013	287	err_t
donatien	0:632c9925f013	288	raw_send(struct raw_pcb pcb, struct pbuf p)
donatien	0:632c9925f013	289	{
donatien	0:632c9925f013	290	return raw_sendto(pcb, p, &pcb->remote_ip);
donatien	0:632c9925f013	291	}
donatien	0:632c9925f013	292
donatien	0:632c9925f013	293	/**
donatien	0:632c9925f013	294	* Remove an RAW PCB.
donatien	0:632c9925f013	295	*
donatien	0:632c9925f013	296	* @param pcb RAW PCB to be removed. The PCB is removed from the list of
donatien	0:632c9925f013	297	* RAW PCB's and the data structure is freed from memory.
donatien	0:632c9925f013	298	*
donatien	0:632c9925f013	299	* @see raw_new()
donatien	0:632c9925f013	300	*/
donatien	0:632c9925f013	301	void
donatien	0:632c9925f013	302	raw_remove(struct raw_pcb *pcb)
donatien	0:632c9925f013	303	{
donatien	0:632c9925f013	304	struct raw_pcb *pcb2;
donatien	0:632c9925f013	305	/* pcb to be removed is first in list? */
donatien	0:632c9925f013	306	if (raw_pcbs == pcb) {
donatien	0:632c9925f013	307	/* make list start at 2nd pcb */
donatien	0:632c9925f013	308	raw_pcbs = raw_pcbs->next;
donatien	0:632c9925f013	309	/* pcb not 1st in list */
donatien	0:632c9925f013	310	} else {
donatien	0:632c9925f013	311	for(pcb2 = raw_pcbs; pcb2 != NULL; pcb2 = pcb2->next) {
donatien	0:632c9925f013	312	/* find pcb in raw_pcbs list */
donatien	0:632c9925f013	313	if (pcb2->next != NULL && pcb2->next == pcb) {
donatien	0:632c9925f013	314	/* remove pcb from list */
donatien	0:632c9925f013	315	pcb2->next = pcb->next;
donatien	0:632c9925f013	316	}
donatien	0:632c9925f013	317	}
donatien	0:632c9925f013	318	}
donatien	0:632c9925f013	319	memp_free(MEMP_RAW_PCB, pcb);
donatien	0:632c9925f013	320	}
donatien	0:632c9925f013	321
donatien	0:632c9925f013	322	/**
donatien	0:632c9925f013	323	* Create a RAW PCB.
donatien	0:632c9925f013	324	*
donatien	0:632c9925f013	325	* @return The RAW PCB which was created. NULL if the PCB data structure
donatien	0:632c9925f013	326	* could not be allocated.
donatien	0:632c9925f013	327	*
donatien	0:632c9925f013	328	* @param proto the protocol number of the IPs payload (e.g. IP_PROTO_ICMP)
donatien	0:632c9925f013	329	*
donatien	0:632c9925f013	330	* @see raw_remove()
donatien	0:632c9925f013	331	*/
donatien	0:632c9925f013	332	struct raw_pcb *
donatien	0:632c9925f013	333	raw_new(u8_t proto)
donatien	0:632c9925f013	334	{
donatien	0:632c9925f013	335	struct raw_pcb *pcb;
donatien	0:632c9925f013	336
donatien	0:632c9925f013	337	LWIP_DEBUGF(RAW_DEBUG \| LWIP_DBG_TRACE, ("raw_new\n"));
donatien	0:632c9925f013	338
donatien	0:632c9925f013	339	pcb = (struct raw_pcb *)memp_malloc(MEMP_RAW_PCB);
donatien	0:632c9925f013	340	/* could allocate RAW PCB? */
donatien	0:632c9925f013	341	if (pcb != NULL) {
donatien	0:632c9925f013	342	/* initialize PCB to all zeroes */
donatien	0:632c9925f013	343	memset(pcb, 0, sizeof(struct raw_pcb));
donatien	0:632c9925f013	344	pcb->protocol = proto;
donatien	0:632c9925f013	345	pcb->ttl = RAW_TTL;
donatien	0:632c9925f013	346	pcb->next = raw_pcbs;
donatien	0:632c9925f013	347	raw_pcbs = pcb;
donatien	0:632c9925f013	348	}
donatien	0:632c9925f013	349	return pcb;
donatien	0:632c9925f013	350	}
donatien	0:632c9925f013	351
donatien	0:632c9925f013	352	#endif /* LWIP_RAW */

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Type:	Library
Created:	31 Dec 2013
Imports:	1
Forks:	0
Commits:	13
Dependents:	1
Dependencies:	0
Followers:	1

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lwip/core/raw.c@0:632c9925f013, 2010-06-11 (annotated)

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