u-boot.git/net/net.c, branch v2024.01

net: Add option for tracing packets

2023-11-05T21:11:38Z

Add an option to trace all packets send/received. This can be helpful when debugging protocol issues, as the packets can then be imported into wireshark [1] and analyzed further. [1] https://www.wireshark.org/docs/wsug_html_chunked/ChIOImportSection.html Signed-off-by: Sean Anderson Reviewed-by: Simon Glass

net: Fix compiling SPL when fastboot is enabled

2023-10-18T00:50:52Z

When fastboot is enabled in U-Boot proper and SPL_NET is enabled, we will try to (unsuccessfully) reference it in SPL. Fix these linker errors by conditioning on SPL_UDP/TCP_FUNCTION_FASTBOOT. Signed-off-by: Sean Anderson Reviewed-by: Simon Glass Reviewed-by: Tom Rini

net: Fix the displayed value of bytes transferred

2023-08-22T19:17:53Z

In the case of NETLOOP_SUCCESS, the decimal value of the u32 variable "net_boot_file_size" is printed using "%d", resulting in negative values being reported for large file sizes. Fix this by using "%u" to print the decimal value corresponding to the bytes transferred. Fixes: 1411157d8578 ("net: cosmetic: Fixup var names related to boot file") Signed-off-by: Siddharth Vadapalli Reviewed-by: Tom Rini

net: ipv6: Add support for default gateway discovery.

2023-05-05T21:58:52Z

In IPv6, the default gateway and prefix length are determined by receiving a router advertisement as defined in - https://www.rfc-editor.org/rfc/rfc4861. Add support for sending router solicitation (RS) and processing router advertisements (RA). If the RA has prefix info option and following conditions are met, then gatewayip6 and net_prefix_length of ip6addr env variables are initialized. These are later consumed by IPv6 code for non-local destination IP. - "Router Lifetime" != 0 - Prefix is NOT link-local prefix (0xfe80::/10) - L flag is 1 - "Valid Lifetime" != 0 Timing Parameters: - MAX_RTR_SOLICITATION_DELAY (0-1s) - RTR_SOLICITATION_INTERVAL (4s) (min retransmit delay) - MAX_RTR_SOLICITATIONS (3 RS transmissions) The functionality is enabled by CONFIG_IPV6_ROUTER_DISCOVERY and invoked automatically from net_init_loop(). Signed-off-by: Ehsan Mohandesi Tested-by: Viacheslav Mitrofanov Reviewed-by: Tested-by: Viacheslav Mitrofanov Reviewed-by: Viacheslav Mitrofanov Tested-by: Sergei Antonov Reviewed-by: Sergei Antonov

net: add fastboot TCP support

2023-05-05T21:48:44Z

Known limitations are 1. fastboot reboot doesn't work (answering OK but not rebooting) 2. flashing isn't supported (TCP transport only limitation) The command syntax is fastboot tcp Signed-off-by: Dmitrii Merkurev Cc: Ying-Chun Liu (PaulLiu) Cc: Simon Glass Сс: Joe Hershberger Сс: Ramon Fried Reviewed-by: Simon Glass

net: dhcp6: Add DHCPv6 (DHCP for IPv6)

2023-05-05T21:48:44Z

Adds DHCPv6 protocol to u-boot. Allows for address assignement with DHCPv6 4-message exchange (SOLICIT->ADVERTISE->REQUEST->REPLY). Includes DHCPv6 options required by RFC 8415. Also adds DHCPv6 options required for PXE boot. Possible enhancements: - Duplicate address detection on DHCPv6 assigned address - IPv6 address assignement through SLAAC - Sending/parsing other DHCPv6 options (NTP, DNS, etc...) Signed-off-by: Sean Edmond Reviewed-by: Ramon Fried

sandbox: Allow ethernet to be disabled at runtime

2023-01-23T23:11:39Z

For bootstd tests it is seldom useful to have ethernet enabled. Add a way to disable it, so that ethernet operations like tftpboot do nothing. Signed-off-by: Simon Glass

net: ipv6: Add missing break into IPv6 protocol handler

2022-12-22T20:39:13Z

IPv6 protocol handler is not terminated with a break statment. It can lead to running unexpected code. Signed-off-by: Viacheslav Mitrofanov Reviewed-by: Daniel Schwierzeck

net: ping6: Add ping6 command

2022-12-05T17:47:16Z

Implement ping6 command to ping hosts using IPv6. It works the same way as an ordinary ping command. There is no ICMP request so it is not possible to ping our host. This patch adds options in Kconfig and Makefile to build ping6 command. Series-changes: 3 - Added structures and functions descriptions - Added to ping6_receive() return value instead of void Series-changes: 4 - Fixed structures and functions description style Signed-off-by: Viacheslav Mitrofanov Reviewed-by: Ramon Fried Reviewed-by: Simon Glass

net: tftp: Add IPv6 support for tftpboot

2022-12-05T17:47:16Z

The command tftpboot uses IPv4 by default. Add the possibility to use IPv6 instead. If an address in the command is an IPv6 address it will use IPv6 to boot or if there is a suffix -ipv6 in the end of the command it also force using IPv6. All other tftpboot features and parameters are left the same. Signed-off-by: Viacheslav Mitrofanov Reviewed-by: Ramon Fried Reviewed-by: Simon Glass