Adds lwip component

Author: HamzaHajeir

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "components/lwip/lwip"]
+	path = components/lwip/lwip
+	url = https://github.com/hamzahajeir/esp-lwip

components/lwip/CMakeLists.txt

@@ -0,0 +1,237 @@
+idf_build_get_property(target IDF_TARGET)
+set(CONFIG_LWIP_ALTCP_TLS 1)
+
+if(NOT ${target} STREQUAL "linux")
+    # ESP platform targets share the same port folder
+    set(target esp32xx)
+endif()
+
+set(include_dirs
+    include
+    include/apps
+    include/apps/sntp
+    lwip/src/include
+    port/include
+    port/freertos/include/
+    port/${target}/include
+    port/${target}/include/arch
+    )
+
+set(srcs
+    "apps/sntp/sntp.c"
+    "lwip/src/api/api_lib.c"
+    "lwip/src/api/api_msg.c"
+    "lwip/src/api/err.c"
+    "lwip/src/api/if_api.c"
+    "lwip/src/api/netbuf.c"
+    "lwip/src/api/netdb.c"
+    "lwip/src/api/netifapi.c"
+    "lwip/src/api/sockets.c"
+    "lwip/src/api/tcpip.c"
+    "lwip/src/apps/sntp/sntp.c"
+    "lwip/src/apps/netbiosns/netbiosns.c"
+    "lwip/src/core/def.c"
+    "lwip/src/core/dns.c"
+    "lwip/src/core/inet_chksum.c"
+    "lwip/src/core/init.c"
+    "lwip/src/core/ip.c"
+    "lwip/src/core/mem.c"
+    "lwip/src/core/memp.c"
+    "lwip/src/core/netif.c"
+    "lwip/src/core/pbuf.c"
+    "lwip/src/core/raw.c"
+    "lwip/src/core/stats.c"
+    "lwip/src/core/sys.c"
+    "lwip/src/core/tcp.c"
+    "lwip/src/core/tcp_in.c"
+    "lwip/src/core/tcp_out.c"
+    "lwip/src/core/timeouts.c"
+    "lwip/src/core/udp.c"
+    "lwip/src/core/ipv4/autoip.c"
+    "lwip/src/core/ipv4/dhcp.c"
+    "lwip/src/core/ipv4/etharp.c"
+    "lwip/src/core/ipv4/icmp.c"
+    "lwip/src/core/ipv4/igmp.c"
+    "lwip/src/core/ipv4/ip4.c"
+    "lwip/src/core/ipv4/ip4_napt.c"
+    "lwip/src/core/ipv4/ip4_addr.c"
+    "lwip/src/core/ipv4/ip4_frag.c"
+    "lwip/src/core/ipv6/dhcp6.c"
+    "lwip/src/core/ipv6/ethip6.c"
+    "lwip/src/core/ipv6/icmp6.c"
+    "lwip/src/core/ipv6/inet6.c"
+    "lwip/src/core/ipv6/ip6.c"
+    "lwip/src/core/ipv6/ip6_addr.c"
+    "lwip/src/core/ipv6/ip6_frag.c"
+    "lwip/src/core/ipv6/mld6.c"
+    "lwip/src/core/ipv6/nd6.c"
+    "lwip/src/netif/ethernet.c"
+    "lwip/src/netif/bridgeif.c"
+    "lwip/src/netif/bridgeif_fdb.c"
+    "lwip/src/netif/slipif.c"
+    "lwip/src/netif/slipif.c"
+    "lwip/src/netif/ppp/auth.c"
+    "lwip/src/netif/ppp/ccp.c"
+    "lwip/src/netif/ppp/chap-md5.c"
+    "lwip/src/netif/ppp/chap-new.c"
+    "lwip/src/netif/ppp/chap_ms.c"
+    "lwip/src/netif/ppp/demand.c"
+    "lwip/src/netif/ppp/eap.c"
+    "lwip/src/netif/ppp/ecp.c"
+    "lwip/src/netif/ppp/eui64.c"
+    "lwip/src/netif/ppp/fsm.c"
+    "lwip/src/netif/ppp/ipcp.c"
+    "lwip/src/netif/ppp/ipv6cp.c"
+    "lwip/src/netif/ppp/lcp.c"
+    "lwip/src/netif/ppp/magic.c"
+    "lwip/src/netif/ppp/mppe.c"
+    "lwip/src/netif/ppp/multilink.c"
+    "lwip/src/netif/ppp/ppp.c"
+    "lwip/src/netif/ppp/pppapi.c"
+    "lwip/src/netif/ppp/pppcrypt.c"
+    "lwip/src/netif/ppp/pppoe.c"
+    "lwip/src/netif/ppp/pppol2tp.c"
+    "lwip/src/netif/ppp/pppos.c"
+    "lwip/src/netif/ppp/upap.c"
+    "lwip/src/netif/ppp/utils.c"
+    "lwip/src/netif/ppp/vj.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_ALTCP_TLS})
+
+    list(APPEND srcs 
+    "lwip/src/core/altcp_alloc.c"
+    "lwip/src/core/altcp_tcp.c"
+    "lwip/src/core/altcp.c"
+    "lwip/src/apps/altcp_tls/altcp_tls_mbedtls_mem.c"
+    "lwip/src/apps/altcp_tls/altcp_tls_mbedtls.c")
+    
+    list(APPEND include_dirs lwip/src/apps/altcp_tls)
+    # add_compile_definitions(LWIP_ALTCP=1)
+    # add_compile_definitions(LWIP_ALTCP_TLS=1)
+
+    set(requires mbedtls)
+endif()
+if(CONFIG_LWIP_PPP_SUPPORT)
+    list(APPEND srcs
+        "lwip/src/netif/ppp/auth.c"
+        "lwip/src/netif/ppp/ccp.c"
+        "lwip/src/netif/ppp/chap-md5.c"
+        "lwip/src/netif/ppp/chap-new.c"
+        "lwip/src/netif/ppp/chap_ms.c"
+        "lwip/src/netif/ppp/demand.c"
+        "lwip/src/netif/ppp/eap.c"
+        "lwip/src/netif/ppp/ecp.c"
+        "lwip/src/netif/ppp/eui64.c"
+        "lwip/src/netif/ppp/fsm.c"
+        "lwip/src/netif/ppp/ipcp.c"
+        "lwip/src/netif/ppp/ipv6cp.c"
+        "lwip/src/netif/ppp/lcp.c"
+        "lwip/src/netif/ppp/magic.c"
+        "lwip/src/netif/ppp/mppe.c"
+        "lwip/src/netif/ppp/multilink.c"
+        "lwip/src/netif/ppp/ppp.c"
+        "lwip/src/netif/ppp/pppapi.c"
+        "lwip/src/netif/ppp/pppcrypt.c"
+        "lwip/src/netif/ppp/pppoe.c"
+        "lwip/src/netif/ppp/pppol2tp.c"
+        "lwip/src/netif/ppp/pppos.c"
+        "lwip/src/netif/ppp/upap.c"
+        "lwip/src/netif/ppp/utils.c"
+        "lwip/src/netif/ppp/vj.c"
+        "lwip/src/netif/ppp/polarssl/arc4.c"
+        "lwip/src/netif/ppp/polarssl/des.c"
+        "lwip/src/netif/ppp/polarssl/md4.c"
+        "lwip/src/netif/ppp/polarssl/md5.c"
+        "lwip/src/netif/ppp/polarssl/sha1.c")
+endif()
+
+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/${target}/no_vfs_syscalls.c")
+    endif()
+endif()
+
+if(CONFIG_LWIP_ICMP)
+    list(APPEND srcs
+        "apps/ping/esp_ping.c"
+        "apps/ping/ping.c"
+        "apps/ping/ping_sock.c")
+endif()
+
+if(CONFIG_LWIP_DHCPS)
+    list(APPEND srcs "apps/dhcpserver/dhcpserver.c")
+endif()
+
+if(CONFIG_LWIP_DHCP_RESTORE_LAST_IP)
+    list(APPEND srcs "port/esp32xx/netif/dhcp_state.c")
+endif()
+
+idf_component_register(SRCS "${srcs}"
+                    INCLUDE_DIRS  ${include_dirs}
+                    LDFRAGMENTS   ${linker_fragments}
+                    REQUIRES    ${requires}
+                    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)
+target_compile_definitions(${COMPONENT_LIB} PRIVATE ESP_LWIP_COMPONENT_BUILD)
+
+set_source_files_properties(
+    lwip/src/netif/ppp/pppos.c
+    PROPERTIES COMPILE_FLAGS
+    -Wno-type-limits
+    )
+# "comparison is always false due to limited range of data type" warning
+# when setting CONFIG_LWIP_TCP_WND_DEFAULT to 65535
+set_source_files_properties(
+    lwip/src/core/tcp.c
+    PROPERTIES COMPILE_FLAGS
+    -Wno-type-limits
+)
+
+if (${CONFIG_LWIP_ALTCP_TLS})
+    target_compile_definitions(${COMPONENT_LIB} PRIVATE -DLWIP_ALTCP=1
+        -DLWIP_ALTCP_TLS=1
+        -DLWIP_ALTCP_TLS_MBEDTLS=1
+        -DALTCP_MBEDTLS_DEBUG=128U
+        -DALTCP_MBEDTLS_LIB_DEBUG=128U
+        -DALTCP_MBEDTLS_USE_SESSION_CACHE=1
+        -DALTCP_MBEDTLS_USE_SESSION_TICKETS=1
+        )
+endif()
+
+# ignore some declaration mismatches
+set_source_files_properties(
+    lwip/src/netif/ppp/chap_ms.c
+    PROPERTIES COMPILE_FLAGS
+    -Wno-array-parameter
+)
+
+if(CONFIG_OPENTHREAD_ENABLED)
+    idf_component_optional_requires(PRIVATE openthread)
+endif()
+
+if(CONFIG_ETH_ENABLED)
+    idf_component_optional_requires(PRIVATE esp_eth)
+endif()
+
+if(CONFIG_LWIP_DHCP_RESTORE_LAST_IP)
+    idf_component_optional_requires(PRIVATE nvs_flash)
+endif()
+
+target_compile_options(${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()