From e442252d72f1aab4c332a76983cd3924ce2b492b Mon Sep 17 00:00:00 2001 From: user Date: Fri, 17 Jul 2026 13:29:42 +0200 Subject: net: keep network packets out of the console (fixes shell garbage on netboot) The link port is both the console-input fallback and the network. At the shell prompt the host's multicast (mDNS/LLMNR/IGMP) was fed to the serial and KGetc read those packet bytes as console input -> garbage in the shell, OSK unusable. Two-part fix: - KGetc now skips SLIP frames (0xC0-delimited) on the serial console path, so inbound packets never surface as console input. Plain injected bytes (the headless tunbridge command path) still pass through. New wConInSkip flag. - netboot/tunbridge only forward IP packets destined to 10.0.0.2 (drop the multicast noise at the bridge). Verified: GB sits at a clean "/#" prompt while all packets (noise included) are forwarded; being-pinged (3/3) and wget still work. On the emulator, the OSK is SELECT=space, START=enter, A=z, B=x, d-pad=WASD/arrows. --- src/kdata.asm | 1 + 1 file changed, 1 insertion(+) (limited to 'src/kdata.asm') diff --git a/src/kdata.asm b/src/kdata.asm index 6c520dd..6333f38 100644 --- a/src/kdata.asm +++ b/src/kdata.asm @@ -56,6 +56,7 @@ wFsPath:: DS 40 ; kernel-side copy of a path argument wFsSlashPtr::DS 2 ; last '/' seen while splitting a path wListDir:: DS 1 ; directory sys_list enumerates wKChar:: DS 1 ; scratch for KPutc +wConInSkip:: DS 1 ; console input: mid-SLIP-frame? (skip net packets) wKillParent::DS 1 ; scratch for sys_kill wPsBuf:: DS 2 ; scratch for sys_ps wPnStart:: DS 2 ; scratch for sys_progname -- cgit v1.3.1-sl0p