perl - Ignoring directories with glob -

i have code parses directory files hold hostname of various devices. want glob ignore directories of depth possible? instance have

 @files = glob('/tftpboot/configs/*/*'); 

my folder architecture looks like

/tftpboot/configs/core/router1 (where router1 file) /tftpboot/configs/test/router2 (where router2 file) /tftpboot/configs/test/firewall/context (context file) 

i want files router1, router2 , file of similar depth. ignore context any file of depth. suggestions?

thank you

follow with:

@files = grep { !-d $_ } @files;   -or- @files = grep { -f $_ } @files; 

you use file::find::rule.

my @files = file::find::rule->file->in('/tftpboot/configs');