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icmp: add example and unitest

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suda-morris
2019-10-22 04:38:09 +00:00
committed by bot
parent fa32a4bd93
commit dc6acf0033
12 changed files with 1122 additions and 0 deletions
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components/lwip/CMakeLists.txt
+1
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@@ -10,6 +10,7 @@ set(srcs
"apps/dhcpserver/dhcpserver.c"
"apps/ping/esp_ping.c"
"apps/ping/ping.c"
"apps/ping/ping_sock.c"
"apps/sntp/sntp.c"
"lwip/src/api/api_lib.c"
"lwip/src/api/api_msg.c"
components/lwip/apps/ping/ping_sock.c
+371
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@@ -0,0 +1,371 @@
// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdlib.h>
#include <stdbool.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "lwip/opt.h"
#include "lwip/init.h"
#include "lwip/mem.h"
#include "lwip/icmp.h"
#include "lwip/netif.h"
#include "lwip/sys.h"
#include "lwip/timeouts.h"
#include "lwip/inet.h"
#include "lwip/inet_chksum.h"
#include "lwip/ip.h"
#include "lwip/netdb.h"
#include "lwip/sockets.h"
#include "esp_log.h"
#include "ping/ping_sock.h"
const static char *TAG = "ping_sock";
#define PING_CHECK(a, str, goto_tag, ret_value, ...) \
do \
{ \
if (!(a)) \
{ \
ESP_LOGE(TAG, "%s(%d): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__); \
ret = ret_value; \
goto goto_tag; \
} \
} while (0)
#define PING_TIME_DIFF_MS(_end, _start) ((uint32_t)(((_end).tv_sec - (_start).tv_sec) * 1000 + \
((_end).tv_usec - (_start).tv_usec) / 1000))
#define PING_CHECK_START_TIMEOUT_MS (1000)
#define PING_FLAGS_INIT (1 << 0)
#define PING_FLAGS_START (1 << 1)
typedef struct {
int sock;
struct sockaddr_storage target_addr;
TaskHandle_t ping_task_hdl;
struct icmp_echo_hdr *packet_hdr;
ip_addr_t recv_addr;
uint32_t recv_len;
uint32_t icmp_pkt_size;
uint32_t count;
uint32_t transmitted;
uint32_t received;
uint32_t interval_ms;
uint32_t elapsed_time_ms;
uint32_t total_time_ms;
uint8_t ttl;
uint32_t flags;
void (*on_ping_success)(esp_ping_handle_t hdl, void *args);
void (*on_ping_timeout)(esp_ping_handle_t hdl, void *args);
void (*on_ping_end)(esp_ping_handle_t hdl, void *args);
void *cb_args;
} esp_ping_t;
static esp_err_t esp_ping_send(esp_ping_t *ep)
{
esp_err_t ret = ESP_OK;
ep->packet_hdr->seqno++;
/* generate checksum since "seqno" has changed */
ep->packet_hdr->chksum = 0;
ep->packet_hdr->chksum = inet_chksum(ep->packet_hdr, ep->icmp_pkt_size);
int sent = sendto(ep->sock, ep->packet_hdr, ep->icmp_pkt_size, 0,
(struct sockaddr *)&ep->target_addr, sizeof(ep->target_addr));
if (sent != ep->icmp_pkt_size) {
int opt_val;
socklen_t opt_len = sizeof(opt_val);
getsockopt(ep->sock, SOL_SOCKET, SO_ERROR, &opt_val, &opt_len);
ESP_LOGE(TAG, "send error=%d", opt_val);
ret = ESP_FAIL;
} else {
ep->transmitted++;
}
return ret;
}
static int esp_ping_receive(esp_ping_t *ep)
{
char buf[64]; // 64 bytes are enough to cover IP header and ICMP header
int len = 0;
struct sockaddr_storage from;
int fromlen = sizeof(from);
while ((len = recvfrom(ep->sock, buf, sizeof(buf), 0, (struct sockaddr *)&from, (socklen_t *)&fromlen)) > 0) {
if (len >= (int)(sizeof(struct ip_hdr) + sizeof(struct icmp_echo_hdr))) {
ep->recv_len = (uint32_t)len;
if (from.ss_family == AF_INET) {
// IPv4
struct sockaddr_in *from4 = (struct sockaddr_in *)&from;
inet_addr_to_ip4addr(ip_2_ip4(&ep->recv_addr), &from4->sin_addr);
IP_SET_TYPE_VAL(ep->recv_addr, IPADDR_TYPE_V4);
} else {
// IPv6
struct sockaddr_in6 *from6 = (struct sockaddr_in6 *)&from;
inet6_addr_to_ip6addr(ip_2_ip6(&ep->recv_addr), &from6->sin6_addr);
IP_SET_TYPE_VAL(ep->recv_addr, IPADDR_TYPE_V6);
}
// Currently we only process IPv4
if (IP_IS_V4_VAL(ep->recv_addr)) {
struct ip_hdr *iphdr = (struct ip_hdr *)buf;
struct icmp_echo_hdr *iecho = (struct icmp_echo_hdr *)(buf + (IPH_HL(iphdr) * 4));
if ((iecho->id == ep->packet_hdr->id) && (iecho->seqno == ep->packet_hdr->seqno)) {
ep->received++;
ep->ttl = iphdr->_ttl;
return len;
}
}
}
fromlen = sizeof(from);
}
// if timeout, len will be -1
return len;
}
static void esp_ping_thread(void *args)
{
esp_ping_t *ep = (esp_ping_t *)(args);
TickType_t last_wake;
struct timeval start_time, end_time;
int recv_ret;
while (1) {
/* wait for ping start signal */
if (ulTaskNotifyTake(pdTRUE, pdMS_TO_TICKS(PING_CHECK_START_TIMEOUT_MS))) {
/* initialize runtime statistics */
ep->packet_hdr->seqno = 0;
ep->transmitted = 0;
ep->received = 0;
ep->total_time_ms = 0;
last_wake = xTaskGetTickCount();
while ((ep->flags & PING_FLAGS_START) && ((ep->count == 0) || (ep->packet_hdr->seqno < ep->count))) {
esp_ping_send(ep);
gettimeofday(&start_time, NULL);
recv_ret = esp_ping_receive(ep);
gettimeofday(&end_time, NULL);
ep->elapsed_time_ms = PING_TIME_DIFF_MS(end_time, start_time);
ep->total_time_ms += ep->elapsed_time_ms;
if (recv_ret >= 0) {
if (ep->on_ping_success) {
ep->on_ping_success((esp_ping_handle_t)ep, ep->cb_args);
}
} else {
if (ep->on_ping_timeout) {
ep->on_ping_timeout((esp_ping_handle_t)ep, ep->cb_args);
}
}
vTaskDelayUntil(&last_wake, pdMS_TO_TICKS(ep->interval_ms)); // to get a more accurate delay
}
/* batch of ping operations finished */
if (ep->on_ping_end) {
ep->on_ping_end((esp_ping_handle_t)ep, ep->cb_args);
}
} else {
// check if ping has been de-initialized
if (!(ep->flags & PING_FLAGS_INIT)) {
break;
}
}
}
/* before exit task, free all resources */
if (ep->packet_hdr) {
free(ep->packet_hdr);
}
if (ep->sock > 0) {
close(ep->sock);
}
free(ep);
vTaskDelete(NULL);
}
esp_err_t esp_ping_new_session(const esp_ping_config_t *config, const esp_ping_callbacks_t *cbs, esp_ping_handle_t *hdl_out)
{
esp_err_t ret = ESP_OK;
esp_ping_t *ep = NULL;
PING_CHECK(config, "ping config can't be null", err, ESP_ERR_INVALID_ARG);
PING_CHECK(hdl_out, "ping handle can't be null", err, ESP_ERR_INVALID_ARG);
ep = mem_calloc(1, sizeof(esp_ping_t));
PING_CHECK(ep, "no memory for esp_ping object", err, ESP_ERR_NO_MEM);
/* set INIT flag, so that ping task won't exit (must set before create ping task) */
ep->flags |= PING_FLAGS_INIT;
/* create ping thread */
BaseType_t xReturned = xTaskCreate(esp_ping_thread, "ping", config->task_stack_size, ep,
config->task_prio, &ep->ping_task_hdl);
PING_CHECK(xReturned == pdTRUE, "create ping task failed", err, ESP_ERR_NO_MEM);
/* callback functions */
if (cbs) {
ep->cb_args = cbs->cb_args;
ep->on_ping_end = cbs->on_ping_end;
ep->on_ping_timeout = cbs->on_ping_timeout;
ep->on_ping_success = cbs->on_ping_success;
}
/* set parameters for ping */
ep->recv_addr = config->target_addr;
ep->count = config->count;
ep->interval_ms = config->interval_ms;
ep->icmp_pkt_size = sizeof(struct icmp_echo_hdr) + config->data_size;
ep->packet_hdr = mem_calloc(1, ep->icmp_pkt_size);
PING_CHECK(ep->packet_hdr, "no memory for echo packet", err, ESP_ERR_NO_MEM);
/* set ICMP type and code field */
ep->packet_hdr->type = ICMP_ECHO;
ep->packet_hdr->code = 0;
/* ping id should be unique, treat task handle as ping ID */
ep->packet_hdr->id = ((uint32_t)ep->ping_task_hdl) & 0xFFFF;
/* fill the additional data buffer with some data */
char *d = (char *)(ep->packet_hdr) + sizeof(struct icmp_echo_hdr);
for (uint32_t i = 0; i < config->data_size; i++) {
d[i] = 'A' + i;
}
/* create socket */
if (IP_IS_V4(&config->target_addr) || ip6_addr_isipv4mappedipv6(ip_2_ip6(&config->target_addr))) {
ep->sock = socket(AF_INET, SOCK_RAW, IP_PROTO_ICMP);
} else {
ep->sock = socket(AF_INET6, SOCK_RAW, IP6_NEXTH_ICMP6);
}
PING_CHECK(ep->sock > 0, "create socket failed: %d", err, ESP_FAIL, ep->sock);
struct timeval timeout;
timeout.tv_sec = config->timeout_ms / 1000;
timeout.tv_usec = (config->timeout_ms % 1000) * 1000;
/* set receive timeout */
setsockopt(ep->sock, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
/* set tos */
setsockopt(ep->sock, IPPROTO_IP, IP_TOS, &config->tos, sizeof(config->tos));
/* set socket address */
if (IP_IS_V4(&config->target_addr)) {
struct sockaddr_in *to4 = (struct sockaddr_in *)&ep->target_addr;
to4->sin_family = AF_INET;
inet_addr_from_ip4addr(&to4->sin_addr, ip_2_ip4(&config->target_addr));
}
if (IP_IS_V6(&config->target_addr)) {
struct sockaddr_in6 *to6 = (struct sockaddr_in6 *)&ep->target_addr;
to6->sin6_family = AF_INET6;
inet6_addr_from_ip6addr(&to6->sin6_addr, ip_2_ip6(&config->target_addr));
}
/* return ping handle to user */
*hdl_out = (esp_ping_handle_t)ep;
return ESP_OK;
err:
if (ep) {
if (ep->sock > 0) {
close(ep->sock);
}
if (ep->packet_hdr) {
free(ep->packet_hdr);
}
if (ep->ping_task_hdl) {
vTaskDelete(ep->ping_task_hdl);
}
free(ep);
}
return ret;
}
esp_err_t esp_ping_delete_session(esp_ping_handle_t hdl)
{
esp_err_t ret = ESP_OK;
esp_ping_t *ep = (esp_ping_t *)hdl;
PING_CHECK(ep, "ping handle can't be null", err, ESP_ERR_INVALID_ARG);
/* reset init flags, then ping task will exit */
ep->flags &= ~PING_FLAGS_INIT;
return ESP_OK;
err:
return ret;
}
esp_err_t esp_ping_start(esp_ping_handle_t hdl)
{
esp_err_t ret = ESP_OK;
esp_ping_t *ep = (esp_ping_t *)hdl;
PING_CHECK(ep, "ping handle can't be null", err, ESP_ERR_INVALID_ARG);
ep->flags |= PING_FLAGS_START;
xTaskNotifyGive(ep->ping_task_hdl);
return ESP_OK;
err:
return ret;
}
esp_err_t esp_ping_stop(esp_ping_handle_t hdl)
{
esp_err_t ret = ESP_OK;
esp_ping_t *ep = (esp_ping_t *)hdl;
PING_CHECK(ep, "ping handle can't be null", err, ESP_ERR_INVALID_ARG);
ep->flags &= ~PING_FLAGS_START;
return ESP_OK;
err:
return ret;
}
esp_err_t esp_ping_get_profile(esp_ping_handle_t hdl, esp_ping_profile_t profile, void *data, uint32_t size)
{
esp_err_t ret = ESP_OK;
esp_ping_t *ep = (esp_ping_t *)hdl;
const void *from = NULL;
uint32_t copy_size = 0;
PING_CHECK(ep, "ping handle can't be null", err, ESP_ERR_INVALID_ARG);
PING_CHECK(data, "profile data can't be null", err, ESP_ERR_INVALID_ARG);
switch (profile) {
case ESP_PING_PROF_SEQNO:
from = &ep->packet_hdr->seqno;
copy_size = sizeof(ep->packet_hdr->seqno);
break;
case ESP_PING_PROF_TTL:
from = &ep->ttl;
copy_size = sizeof(ep->ttl);
break;
case ESP_PING_PROF_REQUEST:
from = &ep->transmitted;
copy_size = sizeof(ep->transmitted);
break;
case ESP_PING_PROF_REPLY:
from = &ep->received;
copy_size = sizeof(ep->received);
break;
case ESP_PING_PROF_IPADDR:
from = &ep->recv_addr;
copy_size = sizeof(ep->recv_addr);
break;
case ESP_PING_PROF_SIZE:
from = &ep->recv_len;
copy_size = sizeof(ep->recv_len);
break;
case ESP_PING_PROF_TIMEGAP:
from = &ep->elapsed_time_ms;
copy_size = sizeof(ep->elapsed_time_ms);
break;
case ESP_PING_PROF_DURATION:
from = &ep->total_time_ms;
copy_size = sizeof(ep->total_time_ms);
break;
default:
PING_CHECK(false, "unknow profile: %d", err, ESP_ERR_INVALID_ARG, profile);
break;
}
PING_CHECK(size >= copy_size, "unmatched data size for profile %d", err, ESP_ERR_INVALID_SIZE, profile);
memcpy(data, from, copy_size);
return ESP_OK;
err:
return ret;
}
components/lwip/include/apps/ping/ping_sock.h
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// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#include "esp_err.h"
#include "lwip/ip_addr.h"
/**
* @brief Type of "ping" session handle
*
*/
typedef void *esp_ping_handle_t;
/**
* @brief Type of "ping" callback functions
*
*/
typedef struct {
/**
* @brief arguments for callback functions
*
*/
void *cb_args;
/**
* @brief Invoked by internal ping thread when received ICMP echo reply packet
*
*/
void (*on_ping_success)(esp_ping_handle_t hdl, void *args);
/**
* @brief Invoked by internal ping thread when receive ICMP echo reply packet timeout
*
*/
void (*on_ping_timeout)(esp_ping_handle_t hdl, void *args);
/**
* @brief Invoked by internal ping thread when a ping session is finished
*
*/
void (*on_ping_end)(esp_ping_handle_t hdl, void *args);
} esp_ping_callbacks_t;
/**
* @brief Type of "ping" configuration
*
*/
typedef struct {
uint32_t count; /*!< A "ping" session contains count procedures */
uint32_t interval_ms; /*!< Milliseconds between each ping procedure */
uint32_t timeout_ms; /*!< Timeout value (in milliseconds) of each ping procedure */
uint32_t data_size; /*!< Size of the data next to ICMP packet header */
uint8_t tos; /*!< Type of Service, a field specified in the IP header */
ip_addr_t target_addr; /*!< Target IP address, either IPv4 or IPv6 */
uint32_t task_stack_size; /*!< Stack size of internal ping task */
uint32_t task_prio; /*!< Priority of internal ping task */
} esp_ping_config_t;
/**
* @brief Default ping configuration
*
*/
#define ESP_PING_DEFAULT_CONFIG() \
{ \
.count = 5, \
.interval_ms = 1000, \
.timeout_ms = 1000, \
.data_size = 56, \
.tos = 0, \
.target_addr = ip_addr_any_type, \
.task_stack_size = 2048, \
.task_prio = 2, \
}
#define ESP_PING_COUNT_INFINITE (0) /*!< Set ping count to zero will ping target infinitely */
/**
* @brief Profile of ping session
*
*/
typedef enum {
ESP_PING_PROF_SEQNO, /*!< Sequence number of a ping procedure */
ESP_PING_PROF_TTL, /*!< Time to live of a ping procedure */
ESP_PING_PROF_REQUEST, /*!< Number of request packets sent out */
ESP_PING_PROF_REPLY, /*!< Number of reply packets received */
ESP_PING_PROF_IPADDR, /*!< IP address of replied target */
ESP_PING_PROF_SIZE, /*!< Size of received packet */
ESP_PING_PROF_TIMEGAP, /*!< Elapsed time between request and reply packet */
ESP_PING_PROF_DURATION /*!< Elapsed time of the whole ping session */
} esp_ping_profile_t;
/**
* @brief Create a ping session
*
* @param config ping configuration
* @param cbs a bunch of callback functions invoked by internal ping task
* @param hdl_out handle of ping session
* @return
* - ESP_ERR_INVALID_ARG: invalid parameters (e.g. configuration is null, etc)
* - ESP_ERR_NO_MEM: out of memory
* - ESP_FAIL: other internal error (e.g. socket error)
* - ESP_OK: create ping session successfully, user can take the ping handle to do follow-on jobs
*/
esp_err_t esp_ping_new_session(const esp_ping_config_t *config, const esp_ping_callbacks_t *cbs, esp_ping_handle_t *hdl_out);
/**
* @brief Delete a ping session
*
* @param hdl handle of ping session
* @return
* - ESP_ERR_INVALID_ARG: invalid parameters (e.g. ping handle is null, etc)
* - ESP_OK: delete ping session successfully
*/
esp_err_t esp_ping_delete_session(esp_ping_handle_t hdl);
/**
* @brief Start the ping session
*
* @param hdl handle of ping session
* @return
* - ESP_ERR_INVALID_ARG: invalid parameters (e.g. ping handle is null, etc)
* - ESP_OK: start ping session successfully
*/
esp_err_t esp_ping_start(esp_ping_handle_t hdl);
/**
* @brief Stop the ping session
*
* @param hdl handle of ping session
* @return
* - ESP_ERR_INVALID_ARG: invalid parameters (e.g. ping handle is null, etc)
* - ESP_OK: stop ping session successfully
*/
esp_err_t esp_ping_stop(esp_ping_handle_t hdl);
/**
* @brief Get runtime profile of ping session
*
* @param hdl handle of ping session
* @param profile type of profile
* @param data profile data
* @param size profile data size
* @return
* - ESP_ERR_INVALID_ARG: invalid parameters (e.g. ping handle is null, etc)
* - ESP_ERR_INVALID_SIZE: the actual profile data size doesn't match the "size" parameter
* - ESP_OK: get profile successfully
*/
esp_err_t esp_ping_get_profile(esp_ping_handle_t hdl, esp_ping_profile_t profile, void *data, uint32_t size);
#ifdef __cplusplus
}
#endif