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bloqaudio
175ca9464a
uip-fw.c forwards packets between several network interfaces. Nothing in this firmware calls it: the only references to uip_fw_output() outside the module are commented out in uip-split.c. It is compiled and linked all the same, and its register pressure lands in direct RAM, which on SWTGW218AS is already reported as having no spare space. Add UIP_CONF_FORWARDING alongside the existing UIP_CONF_BROADCAST and build the module only when it is set. A device that forwards turns it on and gets the module unchanged; a single-interface device stops paying for it. On SWTGW218AS the stack gains 9 bytes, from 151 available to 160, and BANK1 drops 1200 bytes, from 47994 to 46794.