lwip: Support for linux target

Implement linux port layer and reuse the original FreeRTOS layer
that's compiled and used on linux target as well, by means of FreeRTOS
simulator.

components/lwip/port/include/arpa/inet.h

@@ -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_ */

components/lwip/port/include/debug/lwip_debug.h

@@ -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

components/lwip/port/include/lwip_default_hooks.h

@@ -0,0 +1,76 @@
+/*
+ * SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef LWIP_ESP_DEFAULT_HOOKS_H_
+#define LWIP_ESP_DEFAULT_HOOKS_H_
+#include "lwip/ip_addr.h"
+#include "lwip/arch.h"
+#include "lwip/err.h"
+#include "lwip/pbuf.h"
+#include "netif/dhcp_state.h"
+
+
+#ifdef ESP_IDF_LWIP_HOOK_FILENAME
+#include ESP_IDF_LWIP_HOOK_FILENAME
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef CONFIG_LWIP_HOOK_TCP_ISN_DEFAULT
+void lwip_init_tcp_isn(u32_t boot_time, const u8_t *secret_16_bytes);
+#endif
+#if defined(CONFIG_LWIP_HOOK_TCP_ISN_CUSTOM) || defined(CONFIG_LWIP_HOOK_TCP_ISN_DEFAULT)
+u32_t lwip_hook_tcp_isn(const ip_addr_t *local_ip, u16_t local_port,
+                        const ip_addr_t *remote_ip, u16_t remote_port);
+#define LWIP_HOOK_TCP_ISN lwip_hook_tcp_isn
+#endif /* CONFIG_LWIP_HOOK_TCP_ISN... */
+
+#if defined(CONFIG_LWIP_HOOK_IP6_ROUTE_CUSTOM) || defined(CONFIG_LWIP_HOOK_IP6_ROUTE_DEFAULT)
+struct netif *
+lwip_hook_ip6_route(const ip6_addr_t *src, const ip6_addr_t *dest);
+
+#define LWIP_HOOK_IP6_ROUTE lwip_hook_ip6_route
+#endif /* CONFIG_LWIP_HOOK_IP6_ROUTE... */
+
+#if defined(CONFIG_LWIP_HOOK_ND6_GET_GW_CUSTOM) || defined(CONFIG_LWIP_HOOK_ND6_GET_GW_DEFAULT)
+const ip6_addr_t *lwip_hook_nd6_get_gw(struct netif *netif, const ip6_addr_t *dest);
+
+#define LWIP_HOOK_ND6_GET_GW lwip_hook_nd6_get_gw
+#endif /* CONFIG_LWIP_HOOK_ND6_GET_GATEWAY... */
+
+#if defined(CONFIG_LWIP_HOOK_NETCONN_EXT_RESOLVE_CUSTOM) || defined(CONFIG_LWIP_HOOK_NETCONN_EXT_RESOLVE_DEFAULT)
+int lwip_hook_netconn_external_resolve(const char *name, ip_addr_t *addr, u8_t addrtype, err_t *err);
+
+#define LWIP_HOOK_NETCONN_EXTERNAL_RESOLVE lwip_hook_netconn_external_resolve
+#endif /* CONFIG_LWIP_HOOK_NETCONN_EXTERNAL_RESOLVE... */
+
+#if defined(CONFIG_LWIP_HOOK_IP6_INPUT_CUSTOM) || defined(CONFIG_LWIP_HOOK_IP6_INPUT_DEFAULT)
+int lwip_hook_ip6_input(struct pbuf *p, struct netif *inp);
+
+#define LWIP_HOOK_IP6_INPUT lwip_hook_ip6_input
+#endif /* CONFIG_LWIP_HOOK_IP6_INPUT_CUSTIOM... */
+
+struct netif *
+ip4_route_src_hook(const ip4_addr_t *src,const ip4_addr_t *dest);
+
+struct dhcp;
+struct netif;
+struct dhcp_msg;
+void dhcp_parse_extra_opts(struct dhcp *dhcp, uint8_t state, uint8_t option, uint8_t len, struct pbuf* p, uint16_t offset);
+
+void dhcp_append_extra_opts(struct netif *netif, uint8_t state, struct dhcp_msg *msg_out, uint16_t *options_out_len);
+
+int dhcp_set_vendor_class_identifier(uint8_t len, const char * str);
+int dhcp_get_vendor_specific_information(uint8_t len, char * str);
+void dhcp_free_vendor_class_identifier(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LWIP_ESP_DEFAULT_HOOKS_H_ */

components/lwip/port/include/netdb.h

@@ -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

components/lwip/port/include/netif/dhcp_state.h

@@ -0,0 +1,27 @@
+/*
+ * SPDX-FileCopyrightText: 2018-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef LWIP_ESP_DHCP_STATE_H
+#define LWIP_ESP_DHCP_STATE_H
+
+#include <stdbool.h>
+#include "lwip/netif.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool dhcp_ip_addr_restore(struct netif *netif);
+
+void dhcp_ip_addr_store(struct netif *netif);
+
+void dhcp_ip_addr_erase(struct netif *netif);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*  LWIP_ESP_DHCP_STATE_H */

components/lwip/port/include/netinet/in.h

@@ -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_ */

components/lwip/port/include/netinet/tcp.h

@@ -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  */

components/lwip/port/include/sntp/sntp_get_set_time.h

@@ -0,0 +1,47 @@
+/*
+ * 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__
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/*
+ * Declarations of functions used in lwipopts.h to redefine
+ * default sntp macros, such as:
+ * - SNTP_UPDATE_DELAY()
+ * - SNTP_SET_SYSTEM_TIME_US()
+ * - SNTP_GET_SYSTEM_TIME()
+ */
+
+/*
+ * @brief Get the sync interval of SNTP operation
+ * Full definition is provided in IDF's layer in esp_sntp.c
+ */
+uint32_t sntp_get_sync_interval(void);
+
+/**
+ * @brief system time setter used in the sntp module
+ * @note The lwip sntp uses u32_t types for sec and us arguments
+ */
+void sntp_set_system_time(uint32_t sec, uint32_t us);
+
+/**
+ * @brief system time getter used in the sntp module
+ * @note The lwip sntp uses u32_t types for sec and us arguments
+ */
+void sntp_get_system_time(uint32_t* sec, uint32_t* us);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //__SNTP_GET_SET_TIME_H__

components/lwip/port/include/sockets_ext.h

@@ -0,0 +1,24 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define IPV6_MULTICAST_IF    0x300
+#define IPV6_MULTICAST_HOPS  0x301
+#define IPV6_MULTICAST_LOOP  0x302
+
+struct lwip_sock;
+
+bool lwip_setsockopt_impl_ext(struct lwip_sock* sock, int level, int optname, const void *optval, uint32_t optlen, int *err);
+bool lwip_getsockopt_impl_ext(struct lwip_sock* sock, int level, int optname, void *optval, uint32_t *optlen, int *err);
+#ifdef __cplusplus
+}
+#endif