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All callers to mnl_cb_run2() call mnl_socket_recvfrom() right before. Wrap the two in a helper, take typed arguments (struct ynl_parse_arg), instead of hoping that all callers remember that parser error handling requires yarg. In case of ynl_sock_read_family() we will no longer check for kernel returning no data, but that would be a kernel bug, not worth complicating the code to catch this. Calling mnl_cb_run2() on an empty buffer is legal and results in STOP (1). Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Link: https://lore.kernel.org/r/20240227223032.1835527-9-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>