u-boot.git/net/lwip/Kconfig, branch master

Kconfig: net: restyle

2026-06-25T20:15:33Z

Restyle all Kconfigs for "net": Menu entries : no space left Menu attributes: 1 TAB Help text : 1 TAB + 2 spaces Replace '---help---' by 'help' Signed-off-by: Johan Jonker

net: lwip: add TFTPSERVERIP Kconfig option

2026-02-04T08:04:36Z

With the legacy networking stack, it is possible to use USE_SERVERIP, SERVERIP and BOOTP_PREFER_SERVERIP Kconfg options to force use of a specific TFTP server ip. Using the lwIP networking stack use of the 'tftpserverip' environment variable provide the closest equivalent functionality. Add USE_TFTPSERVERIP and TFTPSERVERIP Kconfig options that can be used to add the 'tftpserverip' environment variable to force use of a specific TFTP server ip. Signed-off-by: Jonas Karlman Acked-by: Jerome Forissier

net: lwip: add Kconfig option to show ICMP unreachable errors

2025-08-18T12:08:57Z

Add Kconfig symbol LWIP_ICMP_SHOW_UNREACH which, when enabled, prints a message to the console upon reception of ICMP unreachable messages. For example: $ make qemu_arm64_lwip_defconfig $ qemu-system-aarch64 -M virt -cpu max -nographic -bios u-boot.bin [...] => dhcp DHCP client bound to address 10.0.2.15 (0 ms) => tftp 192.168.0.100:69:Image Using virtio-net#32 device TFTP from server 192.168.0.100; our IP address is 10.0.2.15 Filename 'Image'. Load address: 0x40200000 Loading: ICMP destination unreachable (host unreachable) from 192.168.0.16 Timeout! => tftp 192.168.0.16:69:Image Using virtio-net#32 device TFTP from server 192.168.0.16; our IP address is 10.0.2.15 Filename 'Image'. Load address: 0x40200000 Loading: ICMP destination unreachable (port unreachable) from 192.168.0.16 Timeout! => Submitted upstream as https://github.com/lwip-tcpip/lwip/pull/73. Signed-off-by: Jerome Forissier

net: lwip: add CONFIG_LWIP_DEBUG_RXTX

2025-03-11T13:16:03Z

Add Kconfig symbol LWIP_DEBUG_RXTX to dump the incoming and outgoing packets when NET_LWIP=y. Signed-off-by: Jerome Forissier Reviewed-by: Ilias Apalodimas

Kconfig: describe NET, NO_NET, LWIP_DEBUG and LWIP_ASSERT

2024-11-18T19:32:16Z

Some Kconfig symbols introduced in commit 8cb330355bd5 ("net: introduce alternative implementation as net/lwip/") need a full description. The NET symbol needs one, too. Signed-off-by: Jerome Forissier Reviewed-by: Ilias Apalodimas

net: lwip: Enable https:// support for wget

2024-11-13T01:09:52Z

With the recent changes of lwip & mbedTLS we can now download from https:// urls instead of just http://. Adjust our wget lwip version parsing to support both URLs. While at it adjust the default TCP window for QEMU since https seems to require at least 16384 Signed-off-by: Ilias Apalodimas Reviewed-by: Simon Glass Reviewed-by: Jerome Forissier

net: introduce alternative implementation as net/lwip/

2024-10-16T17:11:56Z

Prepare the introduction of the lwIP (lightweight IP) TCP/IP stack by adding a new net/lwip/ directory and the NET_LWIP symbol. Network support is either NO_NET, NET (legacy stack) or NET_LWIP. Subsequent commits will introduce the lwIP code, re-work the NETDEVICE integration and port some of the NET commands and features to lwIP. SPL_NET cannot be enabled when NET_LWIP=y. SPL_NET pulls some symbols that are part of NET (such as arp_init(), arp_timeout_check(), arp_receive(), net_arp_wait_packet_ip()). lwIP support in SPL may be added later. Similarly, DFU_TFTP and FASTBOOT are not compatible with NET_LWIP because of dependencies on net_loop(), tftp_timeout_ms, tftp_timeout_count_max and other NET things. Let's add a dependency on !NET_LWIP for now. SANDBOX can select NET_LWIP but doing so will currently disable the eth dm tests as well as the wget tests which have strong dependencies on the NET code. Other adjustments to Kconfig files are made to fix "unmet direct dependencies detected" for USB_FUNCTION_SDP and CMD_FASTBOOT when the default networking stack is set to NET_LWIP ("default NET_LWIP" instead of "default NET" in Kconfig). The networking stack is now a choice between NO_NET, NET and NET_LWIP. Therefore '# CONFIG_NET is not set' should be 'CONFIG_NO_NET=y'. Adjust the defconfigs accordingly. Signed-off-by: Jerome Forissier Acked-by: Ilias Apalodimas