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remove lwip_src

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Bill Sideris 2022-11-14 19:33:06 +02:00
parent 6ad61a3fd1
commit 398e9122a0
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384
ports/raspberrypi/lwip_src/ping.c
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/**
* @file
* Ping sender module
*
*/
/*
* 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.
*
* This file is part of the lwIP TCP/IP stack.
*
*/
/**
* This is an example of a "ping" sender (with raw API and socket API).
* It can be used as a start point to maintain opened a network connection, or
* like a network "watchdog" for your device.
*
*/
#include "lwip/opt.h"
#if LWIP_RAW /* don't build if not configured for use in lwipopts.h */
#include "ping.h"
#include "lwip/mem.h"
#include "lwip/raw.h"
#include "lwip/icmp.h"
#include "lwip/netif.h"
#include "lwip/sys.h"
#include "lwip/timeouts.h"
#include "lwip/inet_chksum.h"
#include "lwip/prot/ip4.h"
#if PING_USE_SOCKETS
#include "lwip/sockets.h"
#include "lwip/inet.h"
#include <string.h>
#endif /* PING_USE_SOCKETS */
/**
* PING_DEBUG: Enable debugging for PING.
*/
#ifndef PING_DEBUG
#define PING_DEBUG LWIP_DBG_ON
#endif
/** ping receive timeout - in milliseconds */
#ifndef PING_RCV_TIMEO
#define PING_RCV_TIMEO 1000
#endif
/** ping delay - in milliseconds */
#ifndef PING_DELAY
#define PING_DELAY 1000
#endif
/** ping identifier - must fit on a u16_t */
#ifndef PING_ID
#define PING_ID 0xAFAF
#endif
/** ping additional data size to include in the packet */
#ifndef PING_DATA_SIZE
#define PING_DATA_SIZE 32
#endif
/** ping result action - no default action */
#ifndef PING_RESULT
#define PING_RESULT(ping_ok)
#endif
/* ping variables */
static const ip_addr_t *ping_target;
u16_t ping_seq_num;
#ifdef LWIP_DEBUG
static u32_t ping_time;
#endif /* LWIP_DEBUG */
#if !PING_USE_SOCKETS
static struct raw_pcb *ping_pcb;
#endif /* PING_USE_SOCKETS */
/** Prepare a echo ICMP request */
void
ping_prepare_echo(struct icmp_echo_hdr *iecho, u16_t len) {
size_t i;
size_t data_len = len - sizeof(struct icmp_echo_hdr);
ICMPH_TYPE_SET(iecho, ICMP_ECHO);
ICMPH_CODE_SET(iecho, 0);
iecho->chksum = 0;
iecho->id = PING_ID;
iecho->seqno = lwip_htons(++ping_seq_num);
/* fill the additional data buffer with some data */
for (i = 0; i < data_len; i++) {
((char *)iecho)[sizeof(struct icmp_echo_hdr) + i] = (char)i;
}
iecho->chksum = inet_chksum(iecho, len);
}
#if PING_USE_SOCKETS
/* Ping using the socket ip */
err_t
ping_send(int s, const ip_addr_t *addr) {
int err;
struct icmp_echo_hdr *iecho;
struct sockaddr_storage to;
size_t ping_size = sizeof(struct icmp_echo_hdr) + PING_DATA_SIZE;
LWIP_ASSERT("ping_size is too big", ping_size <= 0xffff);
#if LWIP_IPV6
if (IP_IS_V6(addr) && !ip6_addr_isipv4mappedipv6(ip_2_ip6(addr))) {
/* todo: support ICMP6 echo */
return ERR_VAL;
}
#endif /* LWIP_IPV6 */
iecho = (struct icmp_echo_hdr *)mem_malloc((mem_size_t)ping_size);
if (!iecho) {
return ERR_MEM;
}
ping_prepare_echo(iecho, (u16_t)ping_size);
#if LWIP_IPV4
if (IP_IS_V4(addr)) {
struct sockaddr_in *to4 = (struct sockaddr_in *)&to;
to4->sin_len = sizeof(*to4);
to4->sin_family = AF_INET;
inet_addr_from_ip4addr(&to4->sin_addr, ip_2_ip4(addr));
}
#endif /* LWIP_IPV4 */
#if LWIP_IPV6
if (IP_IS_V6(addr)) {
struct sockaddr_in6 *to6 = (struct sockaddr_in6 *)&to;
to6->sin6_len = sizeof(*to6);
to6->sin6_family = AF_INET6;
inet6_addr_from_ip6addr(&to6->sin6_addr, ip_2_ip6(addr));
}
#endif /* LWIP_IPV6 */
err = lwip_sendto(s, iecho, ping_size, 0, (struct sockaddr *)&to, sizeof(to));
mem_free(iecho);
return err ? ERR_OK : ERR_VAL;
}
static void
ping_recv(int s) {
char buf[64];
int len;
struct sockaddr_storage from;
int fromlen = sizeof(from);
while ((len = lwip_recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr *)&from, (socklen_t *)&fromlen)) > 0) {
if (len >= (int)(sizeof(struct ip_hdr) + sizeof(struct icmp_echo_hdr))) {
ip_addr_t fromaddr;
memset(&fromaddr, 0, sizeof(fromaddr));
#if LWIP_IPV4
if (from.ss_family == AF_INET) {
struct sockaddr_in *from4 = (struct sockaddr_in *)&from;
inet_addr_to_ip4addr(ip_2_ip4(&fromaddr), &from4->sin_addr);
IP_SET_TYPE_VAL(fromaddr, IPADDR_TYPE_V4);
}
#endif /* LWIP_IPV4 */
#if LWIP_IPV6
if (from.ss_family == AF_INET6) {
struct sockaddr_in6 *from6 = (struct sockaddr_in6 *)&from;
inet6_addr_to_ip6addr(ip_2_ip6(&fromaddr), &from6->sin6_addr);
IP_SET_TYPE_VAL(fromaddr, IPADDR_TYPE_V6);
}
#endif /* LWIP_IPV6 */
LWIP_DEBUGF(PING_DEBUG, ("ping: recv "));
ip_addr_debug_print_val(PING_DEBUG, fromaddr);
LWIP_DEBUGF(PING_DEBUG, (" %"U32_F " ms\n", (sys_now() - ping_time)));
/* todo: support ICMP6 echo */
#if LWIP_IPV4
if (IP_IS_V4_VAL(fromaddr)) {
struct ip_hdr *iphdr;
struct icmp_echo_hdr *iecho;
iphdr = (struct ip_hdr *)buf;
iecho = (struct icmp_echo_hdr *)(buf + (IPH_HL(iphdr) * 4));
if ((iecho->id == PING_ID) && (iecho->seqno == lwip_htons(ping_seq_num))) {
/* do some ping result processing */
PING_RESULT((ICMPH_TYPE(iecho) == ICMP_ER));
return;
} else {
LWIP_DEBUGF(PING_DEBUG, ("ping: drop\n"));
}
}
#endif /* LWIP_IPV4 */
}
fromlen = sizeof(from);
}
if (len == 0) {
LWIP_DEBUGF(PING_DEBUG, ("ping: recv - %"U32_F " ms - timeout\n", (sys_now() - ping_time)));
}
/* do some ping result processing */
PING_RESULT(0);
}
static void
ping_thread(void *arg) {
int s;
int ret;
#if LWIP_SO_SNDRCVTIMEO_NONSTANDARD
int timeout = PING_RCV_TIMEO;
#else
struct timeval timeout;
timeout.tv_sec = PING_RCV_TIMEO / 1000;
timeout.tv_usec = (PING_RCV_TIMEO % 1000) * 1000;
#endif
LWIP_UNUSED_ARG(arg);
#if LWIP_IPV6
if (IP_IS_V4(ping_target) || ip6_addr_isipv4mappedipv6(ip_2_ip6(ping_target))) {
s = lwip_socket(AF_INET6, SOCK_RAW, IP_PROTO_ICMP);
} else {
s = lwip_socket(AF_INET6, SOCK_RAW, IP6_NEXTH_ICMP6);
}
#else
s = lwip_socket(AF_INET, SOCK_RAW, IP_PROTO_ICMP);
#endif
if (s < 0) {
return;
}
ret = lwip_setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
LWIP_ASSERT("setting receive timeout failed", ret == 0);
LWIP_UNUSED_ARG(ret);
while (1) {
if (ping_send(s, ping_target) == ERR_OK) {
LWIP_DEBUGF(PING_DEBUG, ("ping: send "));
ip_addr_debug_print(PING_DEBUG, ping_target);
LWIP_DEBUGF(PING_DEBUG, ("\n"));
#ifdef LWIP_DEBUG
ping_time = sys_now();
#endif /* LWIP_DEBUG */
ping_recv(s);
} else {
LWIP_DEBUGF(PING_DEBUG, ("ping: send "));
ip_addr_debug_print(PING_DEBUG, ping_target);
LWIP_DEBUGF(PING_DEBUG, (" - error\n"));
}
sys_msleep(PING_DELAY);
}
}
#else /* PING_USE_SOCKETS */
/* Ping using the raw ip */
static u8_t
ping_recv(void *arg, struct raw_pcb *pcb, struct pbuf *p, const ip_addr_t *addr) {
struct icmp_echo_hdr *iecho;
LWIP_UNUSED_ARG(arg);
LWIP_UNUSED_ARG(pcb);
LWIP_UNUSED_ARG(addr);
LWIP_ASSERT("p != NULL", p != NULL);
if ((p->tot_len >= (PBUF_IP_HLEN + sizeof(struct icmp_echo_hdr))) &&
pbuf_remove_header(p, PBUF_IP_HLEN) == 0) {
iecho = (struct icmp_echo_hdr *)p->payload;
if ((iecho->id == PING_ID) && (iecho->seqno == lwip_htons(ping_seq_num))) {
LWIP_DEBUGF(PING_DEBUG, ("ping: recv "));
ip_addr_debug_print(PING_DEBUG, addr);
LWIP_DEBUGF(PING_DEBUG, (" %"U32_F " ms\n", (sys_now() - ping_time)));
/* do some ping result processing */
PING_RESULT(1);
pbuf_free(p);
return 1; /* eat the packet */
}
/* not eaten, restore original packet */
pbuf_add_header(p, PBUF_IP_HLEN);
}
return 0; /* don't eat the packet */
}
int
ping_send(struct raw_pcb *raw, const ip_addr_t *addr) {
struct pbuf *p;
struct icmp_echo_hdr *iecho;
size_t ping_size = sizeof(struct icmp_echo_hdr) + PING_DATA_SIZE;
LWIP_DEBUGF(PING_DEBUG, ("ping: send "));
ip_addr_debug_print(PING_DEBUG, addr);
LWIP_DEBUGF(PING_DEBUG, ("\n"));
LWIP_ASSERT("ping_size <= 0xffff", ping_size <= 0xffff);
p = pbuf_alloc(PBUF_IP, (u16_t)ping_size, PBUF_RAM);
if (!p) {
return 0;
}
if ((p->len == p->tot_len) && (p->next == NULL)) {
iecho = (struct icmp_echo_hdr *)p->payload;
ping_prepare_echo(iecho, (u16_t)ping_size);
raw_sendto(raw, p, addr);
#ifdef LWIP_DEBUG
ping_time = sys_now();
#endif /* LWIP_DEBUG */
}
pbuf_free(p);
return 1;
}
static void
ping_timeout(void *arg) {
struct raw_pcb *pcb = (struct raw_pcb *)arg;
LWIP_ASSERT("ping_timeout: no pcb given!", pcb != NULL);
ping_send(pcb, ping_target);
sys_timeout(PING_DELAY, ping_timeout, pcb);
}
static void
ping_raw_init(void) {
if (ping_pcb) {
return;
}
ping_pcb = raw_new(IP_PROTO_ICMP);
LWIP_ASSERT("ping_pcb != NULL", ping_pcb != NULL);
raw_recv(ping_pcb, ping_recv, NULL);
raw_bind(ping_pcb, IP_ADDR_ANY);
sys_timeout(PING_DELAY, ping_timeout, ping_pcb);
}
#endif /* PING_USE_SOCKETS */
void
ping_init(const ip_addr_t *ping_addr) {
ping_target = ping_addr;
#if PING_USE_SOCKETS
sys_thread_new("ping_thread", ping_thread, NULL, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO);
#else /* PING_USE_SOCKETS */
ping_raw_init();
#endif /* PING_USE_SOCKETS */
}
#endif /* LWIP_RAW */

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ports/raspberrypi/lwip_src/ping.h
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#ifndef LWIP_PING_H
#define LWIP_PING_H
#include "lwip/raw.h"
#include "lwip/ip_addr.h"
#include "lwip/prot/icmp.h"
/**
* PING_USE_SOCKETS: Set to 1 to use sockets, otherwise the raw api is used
*/
#ifndef PING_USE_SOCKETS
#define PING_USE_SOCKETS LWIP_SOCKET
#endif
void ping_init(const ip_addr_t *ping_addr);
void ping_prepare_echo(struct icmp_echo_hdr *iecho, u16_t len);
extern u16_t ping_seq_num;
#if !PING_USE_SOCKETS
void ping_set_target(const ip_addr_t *ping_addr);
int ping_send(struct raw_pcb *raw, const ip_addr_t *addr);
// u8_t ping_recv(void *arg, struct raw_pcb *pcb, struct pbuf *p, const ip_addr_t *addr);
#endif /* !PING_USE_SOCKETS */
#endif /* LWIP_PING_H */