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LwIP: NAPT functionality
Adds Kconfig option to enable experimental NAPT feature for IP packet forwarding across interfaces. Closes https://github.com/espressif/esp-idf/issues/1527
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@ -46,6 +46,7 @@ set(srcs
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"lwip/src/core/ipv4/icmp.c"
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"lwip/src/core/ipv4/igmp.c"
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"lwip/src/core/ipv4/ip4.c"
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"lwip/src/core/ipv4/ip4_napt.c"
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"lwip/src/core/ipv4/ip4_addr.c"
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"lwip/src/core/ipv4/ip4_frag.c"
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"lwip/src/core/ipv6/dhcp6.c"
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@ -122,6 +122,20 @@ menu "LWIP"
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help
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Enabling this option allows reassemblying incoming fragmented IP packets.
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config LWIP_IP_FORWARD
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bool "Enable IP forwarding"
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default n
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help
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Enabling this option allows packets forwarding across multiple interfaces.
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config LWIP_IPV4_NAPT
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bool "Enable NAT (new/experimental)"
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depends on LWIP_IP_FORWARD
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select LWIP_L2_TO_L3_COPY
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default n
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help
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Enabling this option allows Network Address and Port Translation.
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config LWIP_STATS
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bool "Enable LWIP statistics"
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default n
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@ -1 +1 @@
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Subproject commit 5c181728c894d8c051070b1cf21c55a6222fc64b
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Subproject commit 754b8d5dcb2a2626d81918b60772c18dee41e54e
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@ -185,6 +185,20 @@
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*/
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#define IP_REASS_MAX_PBUFS 10
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/**
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* IP_FORWARD==1: Enables the ability to forward IP packets across network
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* interfaces. If you are going to run lwIP on a device with only one network
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* interface, define this to 0.
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*/
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#define IP_FORWARD CONFIG_LWIP_IP_FORWARD
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/**
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* IP_NAPT==1: Enables IPv4 Network Address and Port Translation.
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* Note that both CONFIG_LWIP_IP_FORWARD and CONFIG_LWIP_L2_TO_L3_COPY options
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* need to be enabled in system configuration for the NAPT to work on ESP platform
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*/
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#define IP_NAPT CONFIG_LWIP_IPV4_NAPT
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/*
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----------------------------------
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---------- ICMP options ----------
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