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The .parse_request() ethnl operation extracts the relevant attributes from the netlink request to populate the private req_info. By passing genl_info as a parameter to this callback, we can use the GENL_REQ_ATTR_CHECK() macro to check for missing mandatory parameters. This macro has the advantage of returning a better error explanation through the netlink_ext_ack struct. Convert the eeprom ethnl code to this macro, as it's the only command yet that has mandatory request parameters. Suggested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Link: https://patch.msgid.link/20260323095833.136266-1-maxime.chevallier@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>