Merge branch 'feature/lwip_linux' into 'master'

lwip: Add support for linux target

Closes IDF-5707, IDF-5647, and IDF-6003

See merge request espressif/esp-idf!19302
pull/9842/merge
David Čermák 2023-01-31 22:01:50 +08:00
commit dba0718f47
80 zmienionych plików z 1084 dodań i 479 usunięć

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@ -336,6 +336,24 @@ test_mqtt_on_host:
- idf.py build
- LSAN_OPTIONS=verbosity=1:log_threads=1 build/host_mqtt_client_test.elf
test_sockets_on_host:
extends: .host_test_template
script:
# test the tcp-client example with system sockets
- cd ${IDF_PATH}/examples/protocols/sockets/tcp_client
- echo 'CONFIG_EXAMPLE_IPV4_ADDR="127.0.0.1"' >> sdkconfig.defaults
- idf.py --preview set-target linux
- idf.py build
- timeout 5 ./build/tcp_client.elf >test.log || true
- grep "Socket unable to connect" test.log
# test the udp-client example with lwip sockets
- cd ${IDF_PATH}/examples/protocols/sockets/udp_client
- echo 'CONFIG_EXAMPLE_IPV4_ADDR="127.0.0.1"' >> sdkconfig.defaults
- idf.py --preview set-target linux
- idf.py build
- timeout 5 ./build/udp_client.elf >test.log || true
- grep "Message sent" test.log
test_eh_frame_parser:
extends: .host_test_template
script:

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@ -1,11 +1,5 @@
idf_build_get_property(target IDF_TARGET)
if(${target} STREQUAL "linux")
# Header only library for linux
idf_component_register(INCLUDE_DIRS include)
return()
endif()
set(srcs_lwip
"lwip/esp_netif_lwip.c"
"lwip/esp_netif_sntp.c"
@ -23,6 +17,12 @@ set(srcs
set(include_dirs "include")
set(priv_include_dirs "private_include")
idf_build_get_property(target IDF_TARGET)
if(${target} STREQUAL "linux")
list(APPEND include_dirs
"linux/stubs/include")
endif()
if(CONFIG_PPP_SUPPORT)
list(APPEND srcs_lwip lwip/esp_netif_lwip_ppp.c)
endif()

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@ -0,0 +1,8 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include_next <endian.h>

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@ -16,6 +16,7 @@
#include "esp_netif.h"
#include "esp_netif_private.h"
#include "esp_random.h"
#include "esp_system.h"
#include "lwip/tcpip.h"
#include "lwip/dhcp.h"

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@ -10,6 +10,7 @@
#if defined(CONFIG_PPP_SUPPORT)
#include "esp_netif_lwip_ppp.h"
#endif
#if defined(CONFIG_ESP_NETIF_TCPIP_LWIP)
#if CONFIG_ESP_NETIF_BRIDGE_EN
#include "netif/bridgeif.h"
@ -64,3 +65,5 @@ const esp_netif_netstack_config_t *_g_esp_netif_netstack_default_ppp = &s_n
const esp_netif_netstack_config_t *_g_esp_netif_netstack_default_eth = &s_eth_netif_config;
const esp_netif_netstack_config_t *_g_esp_netif_netstack_default_wifi_sta = &s_wifi_netif_config_sta;
const esp_netif_netstack_config_t *_g_esp_netif_netstack_default_wifi_ap = &s_wifi_netif_config_ap;
#endif /*CONFIG_ESP_NETIF_TCPIP_LWIP*/

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@ -1,10 +1,18 @@
idf_build_get_property(target IDF_TARGET)
if(NOT ${target} STREQUAL "linux")
# ESP platform targets share the same port folder
set(target esp32xx)
endif()
set(include_dirs
include
include/apps
include/apps/sntp
lwip/src/include
port/esp32/include
port/esp32/include/arch
port/include
port/freertos/include/
port/${target}/include
port/${target}/include/arch
)
set(srcs
@ -85,11 +93,11 @@ set(srcs
"lwip/src/netif/ppp/upap.c"
"lwip/src/netif/ppp/utils.c"
"lwip/src/netif/ppp/vj.c"
"port/esp32/hooks/tcp_isn_default.c"
"port/esp32/hooks/lwip_default_hooks.c"
"port/esp32/debug/lwip_debug.c"
"port/esp32/freertos/sys_arch.c"
"port/esp32/sockets_ext.c")
"port/hooks/tcp_isn_default.c"
"port/hooks/lwip_default_hooks.c"
"port/debug/lwip_debug.c"
"port/sockets_ext.c"
"port/freertos/sys_arch.c")
if(CONFIG_LWIP_PPP_SUPPORT)
list(APPEND srcs
@ -125,10 +133,15 @@ if(CONFIG_LWIP_PPP_SUPPORT)
"lwip/src/netif/ppp/polarssl/sha1.c")
endif()
if(CONFIG_VFS_SUPPORT_IO)
list(APPEND srcs "port/esp32/vfs_lwip.c")
else()
list(APPEND srcs "port/esp32/no_vfs_syscalls.c")
if(NOT ${target} STREQUAL "linux")
# Support for vfs and linker fragments only for target builds
set(priv_requires vfs)
set(linker_fragments linker.lf)
if(CONFIG_VFS_SUPPORT_IO)
list(APPEND srcs "port/${target}/vfs_lwip.c")
else()
list(APPEND srcs "port/${target}/no_vfs_syscalls.c")
endif()
endif()
if(CONFIG_LWIP_ICMP)
@ -147,9 +160,9 @@ if(CONFIG_LWIP_DHCP_RESTORE_LAST_IP)
endif()
idf_component_register(SRCS "${srcs}"
INCLUDE_DIRS "${include_dirs}"
LDFRAGMENTS linker.lf
PRIV_REQUIRES vfs)
INCLUDE_DIRS ${include_dirs}
LDFRAGMENTS ${linker_fragments}
PRIV_REQUIRES ${priv_requires})
# lots of LWIP source files evaluate macros that check address of stack variables
target_compile_options(${COMPONENT_LIB} PRIVATE -Wno-address)
@ -188,3 +201,9 @@ if(CONFIG_LWIP_DHCP_RESTORE_LAST_IP)
endif()
target_compile_options(${COMPONENT_LIB} PRIVATE "-Wno-format")
if(${target} STREQUAL "linux")
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
target_link_libraries(${COMPONENT_LIB} PRIVATE Threads::Threads)
endif()

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@ -3,9 +3,9 @@
*
* SPDX-License-Identifier: Apache-2.0
*/
//#include "esp_common.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "lwip/dhcp.h"
#include "lwip/err.h"
#include "lwip/pbuf.h"

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@ -55,6 +55,7 @@
#if PING_USE_SOCKETS
#include "lwip/sockets.h"
#include "lwip/inet.h"
#include "esp_task.h"
#include "ping/ping_sock.h"
#endif /* PING_USE_SOCKETS */

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@ -6,6 +6,7 @@
#include <stdlib.h>
#include <stdbool.h>
#include <sys/time.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "lwip/opt.h"
@ -231,7 +232,7 @@ esp_err_t esp_ping_new_session(const esp_ping_config_t *config, const esp_ping_c
/* set ICMP type and code field */
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;
ep->packet_hdr->id = ((intptr_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++) {

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@ -15,6 +15,7 @@
#undef SNTP_OPMODE_POLL
#include "lwip/apps/sntp.h"
#include "lwip/tcpip.h"
#include "esp_macros.h"
static const char *TAG = "sntp";

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@ -1,16 +1,8 @@
// Copyright 2015-2016 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.
/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "debug/lwip_debug.h"
#include "lwip/api.h"

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@ -1,40 +0,0 @@
/*
* Copyright (c) 2001, Swedish Institute of Computer Science.
* All rights reserved.
*
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#ifndef __PERF_H__
#define __PERF_H__
#define PERF_START /* null definition */
#define PERF_STOP(x) /* null definition */
#endif /* __PERF_H__ */

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@ -1,23 +0,0 @@
// Copyright 2017 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.
#ifdef __cplusplus
extern "C" {
#endif
void esp_vfs_lwip_sockets_register(void);
#ifdef __cplusplus
}
#endif

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@ -1,20 +0,0 @@
// Copyright 2015-2016 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.
#ifndef INET_H_
#define INET_H_
#include "lwip/inet.h"
#endif /* INET_H_ */

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@ -1,33 +0,0 @@
// Copyright 2015-2016 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.
#ifndef _LWIP_DEBUG_H
#define _LWIP_DEBUG_H
#ifdef __cplusplus
extern "C" {
#endif
void dbg_lwip_tcp_pcb_show(void);
void dbg_lwip_udp_pcb_show(void);
void dbg_lwip_tcp_rxtx_show(void);
void dbg_lwip_udp_rxtx_show(void);
void dbg_lwip_mem_cnt_show(void);
#ifdef __cplusplus
}
#endif
#endif // _LWIP_DEBUG_H

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@ -1,48 +0,0 @@
/**
* @file
* This file is a posix wrapper for lwip/netdb.h.
*/
/*
* 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.
*
*/
#include "lwip/netdb.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef ESP_PLATFORM
int getnameinfo(const struct sockaddr *addr, socklen_t addrlen,
char *host, socklen_t hostlen,
char *serv, socklen_t servlen, int flags);
#endif
#ifdef __cplusplus
}
#endif

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@ -1,22 +0,0 @@
// Copyright 2015-2016 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.
#ifndef IN_H_
#define IN_H_
#include "lwip/inet.h"
#define IN6_IS_ADDR_MULTICAST(a) IN_MULTICAST(a)
#endif /* IN_H_ */

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@ -1,21 +0,0 @@
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
// Copyright 2020 Francesco Giancane <francesco.giancane@accenture.com>
//
// 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.
#ifndef _NETINET_TCP_H
#define _NETINET_TCP_H
#include "lwip/tcp.h"
#endif /* _NETINET_TCP_H */

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@ -1,38 +0,0 @@
/**
* @file
* This file is a posix wrapper for lwip/sockets.h.
*/
/*
* 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.
*
*/
#include "lwip/sockets.h"
/*
SOMAXCONN is expected to be found in this header too,
while for ESP32 port is defined in net/if.h
*/
#include <net/if.h>

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@ -1,35 +1,9 @@
/*
* Copyright (c) 2001, Swedish Institute of Computer Science.
* All rights reserved.
* SPDX-FileCopyrightText: 2001 Swedish Institute of Computer Science
*
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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.
*
* Author: Adam Dunkels <adam@sics.se>
* SPDX-License-Identifier: BSD-3-Clause
*
* SPDX-FileContributor: 2018-2022 Espressif Systems (Shanghai) CO LTD
*/
#ifndef __ARCH_CC_H__
#define __ARCH_CC_H__

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@ -0,0 +1,12 @@
/*
* SPDX-FileCopyrightText: 2001 Swedish Institute of Computer Science
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __PERF_H__
#define __PERF_H__
#define PERF_START /* null definition */
#define PERF_STOP(x) /* null definition */
#endif /* __PERF_H__ */

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@ -0,0 +1,15 @@
/*
* SPDX-FileCopyrightText: 2017-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifdef __cplusplus
extern "C" {
#endif
void esp_vfs_lwip_sockets_register(void);
#ifdef __cplusplus
}
#endif

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@ -0,0 +1,22 @@
/**
* @file
* This file is a posix wrapper for lwip/sockets.h.
*/
/*
* SPDX-FileCopyrightText: 2001-2004 Swedish Institute of Computer Science
*
* SPDX-License-Identifier: BSD-3-Clause
*
* SPDX-FileContributor: 2018-2022 Espressif Systems (Shanghai) CO LTD
*/
#ifndef LWIP_HDR_SYS_SOCKETS_H
#define LWIP_HDR_SYS_SOCKETS_H
#include "lwip/sockets.h"
/*
SOMAXCONN is expected to be found in this header too,
while for ESP32 port is defined in net/if.h
*/
#include <net/if.h>
#endif /* LWIP_HDR_SYS_SOCKETS_H */

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@ -1,16 +1,8 @@
// Copyright 2020 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.
/*
* SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <string.h>
#include <stdbool.h>

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@ -1,46 +1,17 @@
/*
* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
* All rights reserved.
* SPDX-FileCopyrightText: 2001-2003 Swedish Institute of Computer Science
*
* 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.
*
* Author: Adam Dunkels <adam@sics.se>
* SPDX-License-Identifier: BSD-3-Clause
*
* SPDX-FileContributor: 2018-2022 Espressif Systems (Shanghai) CO LTD
*/
#ifndef __SYS_ARCH_H__
#define __SYS_ARCH_H__
#ifdef __linux__
#include "esp32_mock.h"
#else
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "freertos/semphr.h"
#endif // __linux__
#ifdef __cplusplus
extern "C" {

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@ -1,38 +1,18 @@
/*
* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
* All rights reserved.
* SPDX-FileCopyrightText: 2001-2003 Swedish Institute of Computer Science
*
* 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.
*
* Author: Adam Dunkels <adam@sics.se>
* SPDX-License-Identifier: BSD-3-Clause
*
* SPDX-FileContributor: 2018-2022 Espressif Systems (Shanghai) CO LTD
*/
/* lwIP includes. */
#include <pthread.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "freertos/queue.h"
#include "lwip/debug.h"
#include "lwip/def.h"
#include "lwip/sys.h"
@ -40,12 +20,8 @@
#include "lwip/stats.h"
#include "arch/sys_arch.h"
#include "arch/vfs_lwip.h"
#ifdef __linux__
#include "esp32_mock.h"
#else // __linux__
#include "esp_log.h"
#include "esp_compiler.h"
#endif // __linux__
static const char* TAG = "lwip_arch";

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@ -1,3 +1,8 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
*
@ -75,7 +80,6 @@
#include "lwip/sys.h"
#include <string.h>
#include "esp_rom_md5.h"
#include "esp_memory_utils.h"
#ifdef CONFIG_LWIP_HOOK_TCP_ISN_DEFAULT

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@ -0,0 +1,12 @@
/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef INET_H_
#define INET_H_
#include "lwip/inet.h"
#endif /* INET_H_ */

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@ -0,0 +1,25 @@
/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef _LWIP_DEBUG_H
#define _LWIP_DEBUG_H
#ifdef __cplusplus
extern "C" {
#endif
void dbg_lwip_tcp_pcb_show(void);
void dbg_lwip_udp_pcb_show(void);
void dbg_lwip_tcp_rxtx_show(void);
void dbg_lwip_udp_rxtx_show(void);
void dbg_lwip_mem_cnt_show(void);
#ifdef __cplusplus
}
#endif
#endif // _LWIP_DEBUG_H

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@ -17,12 +17,8 @@
#include <sys/types.h>
#include <sys/select.h>
#include <sys/poll.h>
#ifdef __linux__
#include "esp32_mock.h"
#else
#include "esp_task.h"
#include "esp_random.h"
#endif // __linux__
#include "sdkconfig.h"
#include "sntp/sntp_get_set_time.h"
#include "sockets_ext.h"

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@ -0,0 +1,29 @@
/**
* @file
* This file is a posix wrapper for lwip/netdb.h.
*/
/*
* SPDX-FileCopyrightText: 2001-2004 Swedish Institute of Computer Science
*
* SPDX-License-Identifier: BSD-3-Clause
*
* SPDX-FileContributor: 2018-2022 Espressif Systems (Shanghai) CO LTD
*/
#include "lwip/netdb.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef ESP_PLATFORM
int getnameinfo(const struct sockaddr *addr, socklen_t addrlen,
char *host, socklen_t hostlen,
char *serv, socklen_t servlen, int flags);
#endif
#ifdef __cplusplus
}
#endif

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@ -0,0 +1,14 @@
/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef IN_H_
#define IN_H_
#include "lwip/inet.h"
#define IN6_IS_ADDR_MULTICAST(a) IN_MULTICAST(a)
#endif /* IN_H_ */

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@ -0,0 +1,13 @@
/*
* SPDX-FileCopyrightText: 2015-2016 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2020 Francesco Giancane <francesco.giancane@accenture.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef _NETINET_TCP_H
#define _NETINET_TCP_H
#include "lwip/tcp.h"
#endif /* _NETINET_TCP_H */

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@ -1,16 +1,8 @@
// Copyright 2021 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.
/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef __SNTP_GET_SET_TIME_H__
#define __SNTP_GET_SET_TIME_H__

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@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/

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@ -0,0 +1,61 @@
/*
* SPDX-FileCopyrightText: 2001-2003 Swedish Institute of Computer Science
*
* SPDX-License-Identifier: BSD-3-Clause
*
* SPDX-FileContributor: 2022-2023 Espressif Systems (Shanghai) CO LTD
*/
#ifndef LWIP_ARCH_CC_H
#define LWIP_ARCH_CC_H
/* see https://sourceforge.net/p/predef/wiki/OperatingSystems/ */
#if defined __ANDROID__
#define LWIP_UNIX_ANDROID
#elif defined __linux__
#define LWIP_UNIX_LINUX
#elif defined __APPLE__
#define LWIP_UNIX_MACH
#elif defined __OpenBSD__
#define LWIP_UNIX_OPENBSD
#elif defined __CYGWIN__
#define LWIP_UNIX_CYGWIN
#elif defined __GNU__
#define LWIP_UNIX_HURD
#endif
#define LWIP_TIMEVAL_PRIVATE 0
#include <sys/time.h>
#include "esp_linux_helper.h"
#define LWIP_ERRNO_INCLUDE <errno.h>
#if defined(LWIP_UNIX_LINUX) || defined(LWIP_UNIX_HURD)
#define LWIP_ERRNO_STDINCLUDE 1
#endif
/* different handling for unit test, normally not needed */
#ifdef LWIP_NOASSERT_ON_ERROR
#define LWIP_ERROR(message, expression, handler) do { if (!(expression)) { \
handler;}} while(0)
#endif
#if defined(LWIP_UNIX_ANDROID) && defined(FD_SET)
typedef __kernel_fd_set fd_set;
#endif
#if defined(LWIP_UNIX_MACH)
/* sys/types.h and signal.h bring in Darwin byte order macros. pull the
header here and disable LwIP's version so that apps still can get
the macros via LwIP headers and use system headers */
#include <sys/types.h>
#define LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS
#endif
struct sio_status_s;
typedef struct sio_status_s sio_status_t;
#define sio_fd_t sio_status_t*
#define __sio_fd_t_defined
typedef unsigned int sys_prot_t;
#endif /* LWIP_ARCH_CC_H */

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@ -0,0 +1,8 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
static inline void esp_vfs_lwip_sockets_register(void) {}

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@ -0,0 +1,6 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once

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@ -0,0 +1,12 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#ifdef LWIP_HDR_ESP_LWIPOPTS_H
// ignore when included from lwipopts.h since lwip provides all necessary definitions
#else
// otherwise include system fcntl
#include_next <sys/fcntl.h>
#endif

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@ -0,0 +1,13 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef LWIP_HDR_LINUX_SYS_SOCKETS_H
#define LWIP_HDR_LINUX_SYS_SOCKETS_H
/* Include lwip sockets by default */
#include "lwip/sockets.h"
#else
/* Otherwise use system sockets if LWIP_HDR_LINUX_SYS_SOCKETS_H already defined */
#include_next <sys/socket.h>
#endif /* LWIP_HDR_LINUX_SYS_SOCKETS_H */

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@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/

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@ -0,0 +1,5 @@
# Documentation: .gitlab/ci/README.md#manifest-file-to-control-the-buildtest-apps
components/lwip/test_afl_host:
enable:
- if: IDF_TARGET == "linux"

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@ -2,6 +2,7 @@
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
set(COMPONENTS lwip)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(fuzz_test_lwip)

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@ -1,4 +1,7 @@
LWIP_COMPONENT_DIR=../
FREERTOS_COMPONENT_DIR=$(LWIP_COMPONENT_DIR)/../freertos
COMPONENT_DIR=$(LWIP_COMPONENT_DIR)/../
MOCKS_DIR=$(LWIP_COMPONENT_DIR)/../../tools/mocks
CFLAGS=-D IDF_VER=\"v3.1\" \
-DESP_PLATFORM \
@ -37,8 +40,14 @@ INC_DIRS=-I . \
-I $(LWIP_COMPONENT_DIR)/lwip/src/include \
-I $(LWIP_COMPONENT_DIR)/lwip/src/include/netif \
-I $(LWIP_COMPONENT_DIR)/lwip/src/include/posix \
-I $(LWIP_COMPONENT_DIR)/lwip/src/include/posix \
-I $(LWIP_COMPONENT_DIR)/port/esp32/include
-I $(LWIP_COMPONENT_DIR)/port/include \
-I $(LWIP_COMPONENT_DIR)/port/linux/include \
-I $(LWIP_COMPONENT_DIR)/port/freertos/include \
-I $(FREERTOS_COMPONENT_DIR)/FreeRTOS-Kernel/include \
-I $(FREERTOS_COMPONENT_DIR)/esp_additions/include/freertos \
-I $(FREERTOS_COMPONENT_DIR)/FreeRTOS-Kernel/portable/linux/include \
-I $(COMPONENT_DIR)/esp_hw_support/include \
-I $(COMPONENT_DIR)/linux/include
TEST_NAME=test
FUZZ=afl-fuzz
@ -95,7 +104,8 @@ dhcpserver.o: ../apps/dhcpserver/dhcpserver.c $(GEN_CFG)
.PHONY: $(GEN_CFG)
$(GEN_CFG):
$(IDF_PATH)/tools/idf.py reconfigure
# Run reconfiguration without potential AFL in PATHs
PATH=$(subst $(AFL_PATH):,/:,$(PATH)) idf.py reconfigure
$(TEST_NAME): $(OBJECTS)
@echo "[LD] $@"

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@ -1,5 +1,5 @@
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-H2 | ESP32-S2 | ESP32-S3 |
| ----------------- | ----- | -------- | -------- | -------- | -------- | -------- | -------- |
| Supported Targets | Linux |
| ----------------- | ----- |
## Introduction
This test uses [american fuzzy lop](http://lcamtuf.coredump.cx/afl/) to mangle real dns, dhcp client, dhcp server packets and look for exceptions caused by the parser.

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@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -17,7 +17,6 @@
#include "lwip/timeouts.h"
#include "lwip/udp.h"
#include "lwip/timeouts.h"
#include "esp32_mock.h"
#include "no_warn_host.h"
#define ESP_OK 0

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@ -1,35 +0,0 @@
/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef _ESP32_MOCK_H_
#define _ESP32_MOCK_H_
#include <stdint.h>
#include <unistd.h>
/* ------------------------------------------------- ESP32 Port Mock ---------------------------------------------------
*
* ------------------------------------------------------------------------------------------------------------------ */
// --------------------- lwipopts.h ------------------------
#define ESP_TASK_TCPIP_STACK
#define ESP_TASK_TCPIP_PRIO
uint32_t esp_random(void);
// --------------------- sys_arch.h ------------------------
// Required to get linux assert.h to work ???
#define __ASSERT_FUNC __ASSERT_FUNCTION
typedef void * SemaphoreHandle_t;
typedef void * TaskHandle_t;
typedef void * QueueHandle_t;
#define vTaskDelay(ms) usleep((m)*0)
#endif // _ESP32_MOCK_H_

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@ -1,10 +1,2 @@
#pragma once
#define _ESP_NETIF_SUPPRESS_LEGACY_WARNING_
#define __ARCH_CC_H__
#define __XTENSA_API_H__
#define IRAM_ATTR
#define FLAG_ATTR(TYPE)
#define SSIZE_MAX INT_MAX
#undef assert
#define assert(x)
#define sys_prot_t int

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@ -2,3 +2,5 @@ CONFIG_LWIP_TCPIP_CORE_LOCKING=n
CONFIG_LWIP_CHECK_THREAD_SAFETY=n
CONFIG_LWIP_DNS_SUPPORT_MDNS_QUERIES=n
CONFIG_FREERTOS_SMP=n
CONFIG_IDF_TARGET="linux"
CONFIG_UNITY_ENABLE_IDF_TEST_RUNNER=n

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@ -1,3 +1,13 @@
idf_build_get_property(target IDF_TARGET)
if(${target} STREQUAL "linux")
# Make pthread component an empty interface lib referencing host pthread for Linux target
idf_component_register()
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
target_link_libraries(${COMPONENT_LIB} INTERFACE Threads::Threads)
return()
endif()
set(sources "pthread.c"
"pthread_cond_var.c"
"pthread_local_storage.c"

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@ -137,7 +137,7 @@ A socket VFS driver needs to be registered with the following functions defined:
:cpp:func:`stop_socket_select_isr` has the same functionality as :cpp:func:`stop_socket_select` but it can be used from ISR.
Please see :component_file:`lwip/port/esp32/vfs_lwip.c` for a reference socket driver implementation using LWIP.
Please see :component_file:`lwip/port/esp32xx/vfs_lwip.c` for a reference socket driver implementation using LWIP.
.. note::
If you use :cpp:func:`select` for socket file descriptors only then you can disable the :ref:`CONFIG_VFS_SUPPORT_SELECT` option to reduce the code size and improve performance.

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@ -137,7 +137,7 @@ VFS 组件支持通过 :cpp:func:`select` 进行同步输入/输出多路复用
:cpp:func:`stop_socket_select_isr`:cpp:func:`stop_socket_select` 的作用相似,但是前者可在 ISR 中使用。
请参考 :component_file:`lwip/port/esp32/vfs_lwip.c` 以了解使用 LWIP 的套接字驱动参考实现。
请参考 :component_file:`lwip/port/esp32xx/vfs_lwip.c` 以了解使用 LWIP 的套接字驱动参考实现。
.. note::
如果 :cpp:func:`select` 用于套接字文件描述符,您可以禁用 :ref:`CONFIG_VFS_SUPPORT_SELECT` 选项来减少代码量,提高性能。

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@ -0,0 +1,15 @@
config ENV_GPIO_RANGE_MIN
int
default 0
config ENV_GPIO_RANGE_MAX
int
default 0
config ENV_GPIO_IN_RANGE_MAX
int
default ENV_GPIO_RANGE_MAX
config ENV_GPIO_OUT_RANGE_MAX
int
default ENV_GPIO_RANGE_MAX

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@ -1,3 +1,13 @@
idf_build_get_property(target IDF_TARGET)
if(${target} STREQUAL "linux")
# Header only library for linux
idf_component_register(INCLUDE_DIRS include
PRIV_REQUIRES tapif_io)
return()
endif()
set(srcs "stdin_out.c"
"addr_from_stdin.c"
"connect.c"

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@ -4,6 +4,7 @@ menu "Example Connection Configuration"
config EXAMPLE_CONNECT_WIFI
bool "connect using WiFi interface"
depends on !IDF_TARGET_LINUX
default y
help
Protocol examples can use Wi-Fi and/or Ethernet to connect to the network.
@ -117,6 +118,7 @@ menu "Example Connection Configuration"
config EXAMPLE_CONNECT_ETHERNET
bool "connect using Ethernet interface"
depends on !IDF_TARGET_LINUX
default n
help
Protocol examples can use Wi-Fi and/or Ethernet to connect to the network.

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@ -0,0 +1,9 @@
idf_build_get_property(target IDF_TARGET)
if(${target} STREQUAL "linux")
idf_component_register(INCLUDE_DIRS include
SRCS linux/tapio.c linux_connect.c lwip/tapif.c
PRIV_REQUIRES esp_netif lwip)
else()
message(FATAL_ERROR "This component is currently only supported for linux target")
endif()

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@ -0,0 +1,44 @@
menu "Example Connection Configuration"
config EXAMPLE_CONNECT_LWIP_TAPIF
bool "connect using lwip to linux tap interface"
depends on IDF_TARGET_LINUX && ESP_NETIF_TCPIP_LWIP
default n
if EXAMPLE_CONNECT_LWIP_TAPIF
config EXAMPLE_CONNECT_TAPIF_IP_ADDR
string "Static IP address"
default "192.168.5.100"
help
Set static IP address.
config EXAMPLE_CONNECT_TAPIF_NETMASK
string "Static netmask address"
default "255.255.255.0"
help
Set static netmask address.
config EXAMPLE_CONNECT_TAPIF_GW
string "Static gateway address"
default "192.168.5.1"
help
Set static gateway address.
config EXAMPLE_CONNECT_TAPIF_OUT_LOSS
int "Percentage of packets to be dropped on transmission"
default 0
range 0 100
help
Set non-zero number simulate packet loss when sending data.
Number represents probability between 0 and 100%
config EXAMPLE_CONNECT_TAPIF_IN_LOSS
int "Percentage of packets to be dropped on reception"
default 0
range 0 100
help
Set non-zero number simulate packet loss when receiving data.
Number represents probability between 0 and 100%
endif
endmenu

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@ -0,0 +1,154 @@
# tapif-io Component
This component implements a tap networking interface that provides connectivity to host network using `tuntap` interface in Linux.
It could be used to route lwip traffic to host side network, typically when working with the **Linux target**.
## How to use this component
### Usage of the API
1) Add the path to this component to the `EXTRA_COMPONENT_DIRS` in your project makefile
```cmake
list(APPEND EXTRA_COMPONENT_DIRS "$ENV{IDF_PATH}/examples/common_components/tapif_io")
```
2) Include lwip and linux side of the configuration
```cpp
#include "esp_netif.h" // esp-netif
#include "tapio.h" // esp-netif's driver side
#include "lwip/tapif.h" // esp-netif's network stack side
```
3) Configure the esp-netif
a) setup the linux tap I/O config
```cpp
esp_netif_driver_ifconfig_t driver_cfg = {
.handle = tapio_create(),
.transmit = tapio_output,
};
```
b) configure the lwip netif for the tap interface
```cpp
struct esp_netif_netstack_config stack_cfg = {
.lwip = {
.init_fn = lwip_tapif_init,
.input_fn = lwip_tapif_input,
}
};
```
c) configure the esp-netif basic parameters
```cpp
esp_netif_inherent_config_t base_cfg = {
.if_key = "TAP", // unique name of the interface
.flags = ESP_NETIF_FLAG_AUTOUP, // no dhcp client, starts when it's set up
.ip_info = &ip_info, // add static IP info
.route_prio = 100 // priority for setting default gateway
};
```
4) Initialize and attach the esp_netif to the I/O handle
```cpp
esp_netif_t *tap_netif = esp_netif_new(&cfg);
esp_netif_attach(tap_netif, driver_cfg.handle);
```
### Host side networking
1) Create a new tun/tap interface type named `tap0`
a) You can run the script `./make_tap_netif`
b) Update the IP address of the interface to correspond to the configured static IP in previous step
2) Start the application and send/receive the packets via `tap0` interface
* it is possible to create server or client test application listening or connecting to this interface.
* it is also possible to route these packets to external network (using routing rules or simply by ip forwarding if using the same subnet)
#### Common networking/routing examples
##### Isolated internal connection
Is useful to experiment with one interface with no intention to connect to internet or external facilities.
Typically, when we want to create a server listening on the `tap0` interface and run a client in lwip, e.g. the default `tcp_client` socket example in IDF.
* Create the tap interface using `./make_tap_netif` and set the IP address **not to overlap** with any other IPv4 network range (e.g. `ip addr add 192.168.5.1/24 dev tap0`)
* Configure the `tapif_io` component to use static address from that range (e.g. `192.168.5.x`)
* Configure the `tcp_client` example to connect to the tap interface IP address (e.g. `192.168.5.1`)
* Execute a tcp server listening on the tap interface and the configured port (e.g. `nc -l 3333`)
* Build and run the `tcp_client` example to send and receive data between the server created in the previous step.
##### Connecting to the external network using IP forwarding
This allows using full-featured network facilities of your host network, but a care must be taken to the selected IP addresses to avoid potential conflicts.
* Set the IP address of the `tap0` interface from the range used by your host system's default gateway (e.g. `ip addr add 192.168.0.123/24 dev tap0`, assuming the default netif is `eth0` with IP range of `192.168.0.x` and this address doesn't overlap with any other IP address in this network)
* Configure the `tapif_io` with another address from the same range, e.g.
```text
CONFIG_EXAMPLE_CONNECT_TAPIF_IP_ADDR="192.168.0.100"
CONFIG_EXAMPLE_CONNECT_TAPIF_NETMASK="255.255.255.0"
CONFIG_EXAMPLE_CONNECT_TAPIF_GW="192.168.0.1"
```
assuming that the default gateway of your host network is configured to `192.168.0.1`
* Build and run the lwip example to interact with the host network, e.g, to send an HTTP request to a publicly available http server (if the server is reachable from your host network)
(Note, that the IP forwarding must be enabled in the host system:
```bash
echo 1 > /proc/sys/net/ipv4/ip_forward
```
)
##### Routing the internal interface to the host network with IP tables
Uses an isolated interface with routing and NAT-ing between interfaces
* Configure the `tap0` interface address **not to overlap** with any other IPv4 network range.
* Setup `MASQUERADE` target to route network traffic between `tap0` and your default network interface (`eth0` in the below example).
```bash
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
sudo iptables -A FORWARD -i eth0 -o tap0 -m state --state RELATED,ESTABLISHED -j ACCEPT
sudo iptables -A FORWARD -i tap0 -o eth0 -j ACCEPT
```
##### Using DHCP
It's also possible to configure the lwip interface to use DHCP client (common setup for most default network interfaces, such as Ethernet or WiFi station)
and set up a DHCP server on the host machine to assign the IP address dynamically.
1) **Configure and set the `esp-netif` up**
* Same as in [API usage](#Usage-of-the-API), but update the base esp-netif config `3c)` to enable DHCP client
```cpp
esp_netif_inherent_config_t base_cfg = {
.if_key = "TAP",
.flags = (esp_netif_flags_t)(ESP_NETIF_DHCP_CLIENT | ESP_NETIF_FLAG_EVENT_IP_MODIFIED | ESP_NETIF_FLAG_AUTOUP),
.route_prio = 100
};
```
* After starting the netif, tell the lwIP that we're connected
```cpp
esp_netif_action_connected(tap_netif, 0, 0, 0);
```
* Wait for the IP address to be assigned.
This could be implemented as a wait loop below, as the esp-event currently doesn't support IP events on Linux target.
```cpp
esp_netif_ip_info_t ip_info = {};
while (ip_info.ip.addr == 0) {
ESP_LOGI("tap-init", "No IP assigned, waiting...");
usleep(1000000);
esp_netif_get_ip_info(tap_netif, &ip_info);
}
ESP_LOGI("tap-init", "Assigned IP address:"IPSTR ",", IP2STR(&ip_info.ip));
```
2) **Configure forwarding/routing** if needed based on the previous sections.
3) **Configure the DHCP server on the host machine**
Example for `isc-dhcp-server`
```bash
INTERFACES="tap0";
authoritative;
subnet 192.168.5.0 netmask 255.255.255.0 {
range 192.168.5.2 192.168.5.200;
option routers 192.168.5.1;
option domain-name-servers 8.8.8.8;
}
```

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/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
/* Common functions for protocol examples, to establish tap interface connection
* For linux target
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#pragma once
#include "esp_err.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Configure and connect, wait for IP
*
* @return ESP_OK on successful connection
*/
esp_err_t example_connect(void);
#ifdef __cplusplus
}
#endif

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/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include "esp_err.h"
#include "esp_netif.h"
/**
* @brief Creates tapio layer as a driver interface to esp-netif
*
* @warning Implemented as singleton, can use only one tapio in the system!
*
* @return pointer to the tapio driver handle
*/
void *tapio_create(void);
/**
* @brief esp-netif driver I/O output path
*
* @param h Driver's handle
* @param buffer Data to output
* @param len Data size
* @return ESP_OK on success
*/
esp_err_t tapio_output(void *h, void *buffer, size_t len);

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/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdlib.h>
#include "esp_err.h"
#include "esp_log.h"
#include <stdlib.h>
#include "esp_netif.h"
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <lwip/sys.h>
#include "errno.h"
#define LWIP_HDR_LINUX_SYS_SOCKETS_H
#include <linux/if.h>
#include <linux/if_tun.h>
#include <esp_netif_net_stack.h>
#define DEVTAP "/dev/net/tun"
#define DEVTAP_NAME "tap0"
typedef struct tap_io {
esp_netif_driver_base_t base;
int fd;
} tap_io_t;
static const char *TAG = "tap-netif";
static void tapio_input_task(void *arg)
{
tap_io_t *io = arg;
fd_set fdset;
int ret;
while (1) {
FD_ZERO(&fdset);
FD_SET(io->fd, &fdset);
/* Wait for a packet to arrive. */
ret = select(io->fd + 1, &fdset, NULL, NULL, NULL);
if (ret == 1) {
/* Handle incoming packet. */
ssize_t readlen;
char buf[1518]; /* max packet size including VLAN excluding CRC */
/* Obtain the size of the packet and put it into the "len"
variable. */
readlen = read(io->fd, buf, sizeof(buf));
if (readlen < 0) {
ESP_LOGE(TAG, "Failed to read from tap fd: returned %ld", readlen);
exit(1);
}
#if CONFIG_EXAMPLE_CONNECT_TAPIF_IN_LOSS
if (((double)rand()/(double)RAND_MAX) < ((double)CONFIG_EXAMPLE_CONNECT_TAPIF_IN_LOSS)/100.0) {
ESP_LOGW(TAG, "Simulated packet drop on input");
continue;
}
#endif
esp_netif_receive(io->base.netif, buf, readlen, NULL);
} else if (ret == -1) {
if (errno == EINTR /* Interrupted system call (used by FreeRTOS simulated interrupts) */) {
vTaskDelay(1); // yield to the FreeRTOS simulator
} else {
ESP_LOGE(TAG, "tapif_thread: select() error(%d), %s", errno, strerror(errno));
}
}
}
}
static esp_err_t tapio_start(esp_netif_t *esp_netif, void *arg)
{
tap_io_t *io = arg;
io->base.netif = esp_netif;
esp_netif_action_start(esp_netif, 0, 0, 0);
sys_thread_new("tapio_rx", tapio_input_task, io, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO);
return ESP_OK;
}
void *tapio_create(void)
{
static tap_io_t tap_io = {};
tap_io.base.post_attach = tapio_start;
tap_io.fd = open(DEVTAP, O_RDWR);
if (tap_io.fd == -1) {
ESP_LOGE(TAG, "Cannot open tap device %s", DEVTAP);
return NULL;
}
struct ifreq ifr = {};
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, DEVTAP_NAME, sizeof(ifr.ifr_name));
ifr.ifr_name[sizeof(ifr.ifr_name)-1] = 0; /* ensure \0 termination */
ifr.ifr_flags = IFF_TAP|IFF_NO_PI;
if (ioctl(tap_io.fd, TUNSETIFF, (void *) &ifr) < 0) {
ESP_LOGE(TAG, "Cannot configure ioctl(TUNSETIFF) for \"%s\"", DEVTAP);
return NULL;
}
return &tap_io;
}
esp_err_t tapio_output(void *h, void *buffer, size_t len)
{
tap_io_t *io = h;
ssize_t written;
#if CONFIG_EXAMPLE_CONNECT_TAPIF_OUT_LOSS
if (((double)rand()/(double)RAND_MAX) < ((double)CONFIG_EXAMPLE_CONNECT_TAPIF_OUT_LOSS)/100.0) {
ESP_LOGW(TAG, "Simulated packet drop on output");
return ESP_OK; /* ESP_OK because we simulate packet loss on cable */
}
#endif
/* signal that packet should be sent(); */
written = write(io->fd, buffer, len);
if (written < len) {
ESP_LOGE(TAG, "Failed to write from tap fd: returned %ld", written);
return ESP_FAIL;
}
return ESP_OK;
}

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/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "esp_err.h"
#include "esp_netif.h" // esp-netif
#include "tapio.h" // esp-netif's driver side
#include "lwip/tapif.h" // esp-netif's network stack side
esp_err_t example_connect(void)
{
#if CONFIG_EXAMPLE_CONNECT_LWIP_TAPIF
// configure linux tapio
esp_netif_driver_ifconfig_t driver_cfg = {
.handle = tapio_create(),
.transmit = tapio_output,
};
// configure lwip netif for the tapif
struct esp_netif_netstack_config stack_cfg = {
.lwip = {
.init_fn = lwip_tapif_init,
.input_fn = lwip_tapif_input,
}
};
// configure inherent esp-netif parameters
esp_netif_ip_info_t ip_info = {};
ip_info.ip.addr = ipaddr_addr(CONFIG_EXAMPLE_CONNECT_TAPIF_IP_ADDR);
ip_info.netmask.addr = ipaddr_addr(CONFIG_EXAMPLE_CONNECT_TAPIF_NETMASK);
ip_info.gw.addr = ipaddr_addr(CONFIG_EXAMPLE_CONNECT_TAPIF_GW);
esp_netif_inherent_config_t base_cfg = {
.if_key = "TAP",
.flags = ESP_NETIF_FLAG_AUTOUP,
.ip_info = &ip_info,
.route_prio = 100
};
// put all configs together
esp_netif_config_t cfg = {
.base = &base_cfg,
.driver = &driver_cfg,
.stack = &stack_cfg
};
// create the interface and attach it to the tapio-handle
esp_netif_t *tap_netif = esp_netif_new(&cfg);
esp_netif_attach(tap_netif, driver_cfg.handle);
#endif // EXAMPLE_CONNECT_LWIP_TAPIF
return ESP_OK;
}

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@ -0,0 +1,100 @@
/*
* SPDX-FileCopyrightText: 2001-2003 Swedish Institute of Computer Science
*
* SPDX-License-Identifier: BSD-3-Clause
*
* SPDX-FileContributor: 2022-2023 Espressif Systems (Shanghai) CO LTD
*/
#include <string.h>
#include "lwip/opt.h"
#include "lwip/pbuf.h"
#include "lwip/snmp.h"
#include "lwip/ethip6.h"
#include "netif/etharp.h"
#include "esp_netif.h"
#include "esp_netif_net_stack.h"
#define IFNAME0 't'
#define IFNAME1 'p'
static err_t
low_level_output(struct netif *netif, struct pbuf *p)
{
esp_netif_t *esp_netif = esp_netif_get_handle_from_netif_impl(netif);
char buf[1518]; /* max packet size including VLAN excluding CRC */
if (p->tot_len > sizeof(buf)) {
MIB2_STATS_NETIF_INC(netif, ifoutdiscards);
LWIP_DEBUGF(NETIF_DEBUG, ("tapif: packet too large"));
return ERR_IF;
}
/* initiate transfer(); */
pbuf_copy_partial(p, buf, p->tot_len, 0);
int ret = esp_netif_transmit(esp_netif, buf, p->tot_len);
/* Check error */
if (likely(ret == ESP_OK)) {
return ERR_OK;
}
if (ret == ESP_ERR_NO_MEM) {
return ERR_MEM;
}
return ERR_IF;
}
static void
low_level_init(struct netif *netif)
{
/* Obtain MAC address from network interface. */
netif->hwaddr[0] = 0x02;
netif->hwaddr[1] = 0x12;
netif->hwaddr[2] = 0x34;
netif->hwaddr[3] = 0x56;
netif->hwaddr[4] = 0x78;
netif->hwaddr[5] = 0xab;
netif->hwaddr_len = 6;
/* device capabilities */
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_IGMP;
}
err_t lwip_tapif_init(struct netif *netif)
{
LWIP_ASSERT("Tried to initialize tapif with NULL netif", netif != NULL);
netif->name[0] = IFNAME0;
netif->name[1] = IFNAME1;
#if LWIP_IPV4
netif->output = etharp_output;
#endif /* LWIP_IPV4 */
#if LWIP_IPV6
netif->output_ip6 = ethip6_output;
#endif /* LWIP_IPV6 */
netif->linkoutput = low_level_output;
netif->mtu = 1500;
low_level_init(netif);
netif_set_link_up(netif);
return ERR_OK;
}
void lwip_tapif_input(void *h, void *buffer, size_t len, void *l2_buff)
{
struct netif *netif = h;
struct pbuf *p;
LWIP_ASSERT("running tapif input with NULL netif", netif != NULL);
p = pbuf_alloc(PBUF_RAW, len, PBUF_RAM);
if (p == NULL) {
return;
}
memcpy(p->payload, buffer, len);
/* full packet send to tcpip_thread to process */
if (unlikely(netif->input(p, netif) != ERR_OK)) {
LWIP_DEBUGF(NETIF_DEBUG, ("tapif_input: IP input error\n"));
pbuf_free(p);
}
}

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/*
* SPDX-FileCopyrightText: 2001-2003 Swedish Institute of Computer Science
*
* SPDX-License-Identifier: BSD-3-Clause
*
* SPDX-FileContributor: 2022-2023 Espressif Systems (Shanghai) CO LTD
*/
#pragma once
#include "lwip/esp_netif_net_stack.h"
/**
* @brief lwip netif init API
* @param netif pointer to lwip's netif
* @return ERR_OK on success
*/
err_t lwip_tapif_init(struct netif *netif);
/**
* @brief Input data path
* @param h pointer to network stack handle (stuct netif* in our case)
* @param buffer Data
* @param len Data size
* @param l2_buff Data L2 buffer
*/
void lwip_tapif_input(void *h, void *buffer, size_t len, void *l2_buff);

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@ -0,0 +1,4 @@
#!/usr/bin/env bash
sudo ip tuntap add dev tap0 mode tap user `whoami`
sudo ip link set tap0 up
sudo ip addr add 192.168.5.1/24 dev tap0

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@ -2,7 +2,7 @@
# CMakeLists in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
if(${IDF_TARGET} STREQUAL "linux")
if("${IDF_TARGET}" STREQUAL "linux")
set(EXTRA_COMPONENT_DIRS "$ENV{IDF_PATH}/tools/mocks/freertos/"
"$ENV{IDF_PATH}/examples/protocols/linux_stubs/esp_stubs")
set(COMPONENTS main)

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@ -2,9 +2,14 @@
# CMakeLists in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
# (Not part of the boilerplate)
# This example uses an extra component for common functions such as Wi-Fi and Ethernet connection.
set(EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/examples/common_components/protocol_examples_common)
if("${IDF_TARGET}" STREQUAL "linux")
# This example uses an extra component with common functionality for lwip's port on linux target
set(EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/examples/common_components/protocol_examples_tapif_io)
set(COMPONENTS main esp_netif protocol_examples_tapif_io startup esp_hw_support esp_system nvs_flash)
else()
# This example uses an extra component for common functions such as Wi-Fi and Ethernet connection on ESP target
set(EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/examples/common_components/protocol_examples_common)
endif()
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(udp_client)

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@ -72,3 +72,40 @@ See the Getting Started Guide for full steps to configure and use ESP-IDF to bui
## Troubleshooting
Start server first, to receive data sent from the client (application).
## Running the example for Linux target
This example could be executed on host system, using lwIP port for linux and FreeRTOS simulator on linux. The socket API used in this example directly calls lwIP implementation. Follow the steps below to configure, build and run the example on linux operating system.
1. First configure the target (please note that using linux target is currently available only in `preview` stage)
```
idf.py --preview set-target linux
```
2. Configure the project
```
idf.py menuconfig
```
Choose connection capabilities in `Example Connection Configuration` menu:
* By default, the `example_connect()` function returns as a no-op, expecting that the connection is already available. This option is preferred when we don't have to interact with outside networking layers and use only lwIP internal interface, such as loopback netif (`lo`).
* If you want to connect lwIP network interface to the host system networking, set `EXAMPLE_CONNECT_LWIP_TAPIF`.
* Configure the interface address information (IP address, GW address and netmask).
* Create a host network interface named `tap0` of *TAP* type. You can use the `./make_tap_netif` script located in the `tapif_io` component directory.
* Optionally set input or output packet loss rate to simulate loosing data of physical interfaces.
* Note about the host side networking:
* This example uses static IP address configured in `tapif_io` component configuration.
* Use the IP ranges that do not overlap with any other IP range of the host system.
* Make sure that the same IP range is configured in `tap0` interface created by tge `./make_tap_netif` script.
* You can leave the defaults in the script and `tapif_io` settings unless any other host network interface uses `192.168.5.x` range.
* Read more about host-side networking in the [`tapif_io` component documentation](../../../common_components/protocol_examples_tapif_io/README.md).
3. Generate partition table for the application:
```
idf.by partition-table
```
4. Build and run the example the usual way (Note that the flash step is left out)
```
idf.by build
idf.py monitor
```

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@ -12,7 +12,6 @@
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "esp_log.h"
#include "nvs_flash.h"
@ -23,7 +22,10 @@
#include "lwip/sockets.h"
#include "lwip/sys.h"
#include <lwip/netdb.h>
#ifdef CONFIG_EXAMPLE_SOCKET_IP_INPUT_STDIN
#include "addr_from_stdin.h"
#endif
#if defined(CONFIG_EXAMPLE_IPV4)
#define HOST_IP_ADDR CONFIG_EXAMPLE_IPV4_ADDR

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@ -64,6 +64,7 @@ lwip_component:
include:
- 'components/lwip/**'
- 'components/esp_netif/lwip/**'
- 'examples/common_components/protocol_examples_tapif_io/lwip'
allowed_licenses:
- Apache-2.0
- BSD-3-Clause

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@ -711,23 +711,6 @@ components/lwip/apps/ping/ping.c
components/lwip/include/apps/dhcpserver/dhcpserver_options.h
components/lwip/include/apps/esp_ping.h
components/lwip/include/apps/ping/ping.h
components/lwip/port/esp32/debug/lwip_debug.c
components/lwip/port/esp32/freertos/sys_arch.c
components/lwip/port/esp32/hooks/tcp_isn_default.c
components/lwip/port/esp32/include/arch/cc.h
components/lwip/port/esp32/include/arch/perf.h
components/lwip/port/esp32/include/arch/sys_arch.h
components/lwip/port/esp32/include/arch/vfs_lwip.h
components/lwip/port/esp32/include/arpa/inet.h
components/lwip/port/esp32/include/debug/lwip_debug.h
components/lwip/port/esp32/include/netdb.h
components/lwip/port/esp32/include/netif/ethernetif.h
components/lwip/port/esp32/include/netif/openthreadif.h
components/lwip/port/esp32/include/netinet/in.h
components/lwip/port/esp32/include/netinet/tcp.h
components/lwip/port/esp32/include/sntp/sntp_get_set_time.h
components/lwip/port/esp32/include/sys/socket.h
components/lwip/port/esp32/no_vfs_syscalls.c
components/lwip/test_afl_host/dhcp_di.h
components/lwip/test_afl_host/dhcpserver_di.h
components/lwip/test_afl_host/dns_di.h

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@ -41,6 +41,7 @@ examples/build_system/cmake/idf_as_lib/run-esp32h4.sh
examples/build_system/cmake/idf_as_lib/run-esp32s2.sh
examples/build_system/cmake/idf_as_lib/run-esp32s3.sh
examples/build_system/cmake/idf_as_lib/run.sh
examples/common_components/protocol_examples_tapif_io/make_tap_netif
examples/storage/parttool/parttool_example.py
examples/storage/parttool/parttool_example.sh
examples/system/ota/otatool/get_running_partition.py

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@ -0,0 +1,3 @@
# This is a manual mock that supplies `main()` if FreeRTOS is mocked
idf_component_register(SRCS "startup_mock.c"
REQUIRES main esp_event)

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@ -0,0 +1,35 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdbool.h>
#include "esp_err.h"
#include "Mockqueue.h"
#include "Mocktask.h"
#include "Mockesp_event.h"
#include <stdio.h>
extern void app_main(void);
int main(int argc, char **argv)
{
int queue;
setbuf(stdout, NULL);
// Mocks are used only as workarounds to build this application
// without FreeRTOS simulator.
// The code below presets the mocks to ignore and return
xQueueSemaphoreTake_IgnoreAndReturn(true);
xQueueGenericSend_IgnoreAndReturn(true);
vQueueDelete_Ignore();
xQueueCreateMutex_IgnoreAndReturn((QueueHandle_t)&queue);
xTaskGetTickCount_IgnoreAndReturn(0);
xQueueGenericCreate_IgnoreAndReturn((QueueHandle_t)&queue);
xTaskCreatePinnedToCore_IgnoreAndReturn((BaseType_t) &queue);
esp_event_loop_create_default_IgnoreAndReturn(ESP_OK);
xQueueGiveMutexRecursive_IgnoreAndReturn(true);
app_main();
return 0;
}