Help me understand iPXE code

[Rickert]

Thanks, Micheal. I read the document and learned something useful.

Another thing that's bugging me is the written DHCP code (my dhcp problem is solved, until now). There exists functions for handling dhcp creating and requesting DHCP packets: dhcp_create_packet / dhcp_create_request. When the dhcp command is executed from the script, iPXE did call those two functions (I put printf inside those functions). Yet, I found no function calling those functions in the iIPXE source code, not even the linker table.

Could you help me find the missing link here?