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| author | user <user@clank> | 2026-07-17 13:29:42 +0200 |
|---|---|---|
| committer | user <user@clank> | 2026-07-17 13:29:42 +0200 |
| commit | e442252d72f1aab4c332a76983cd3924ce2b492b (patch) | |
| tree | ed360492ab9e38c4f96b6414744184ddad04d180 /src/kdata.asm | |
| parent | tools: netboot - interactive networked emulator (TUN + NAT + --serial-sock) (diff) | |
| download | gbos-e442252d72f1aab4c332a76983cd3924ce2b492b.tar.gz gbos-e442252d72f1aab4c332a76983cd3924ce2b492b.tar.xz gbos-e442252d72f1aab4c332a76983cd3924ce2b492b.zip | |
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.
Diffstat (limited to 'src/kdata.asm')
| -rw-r--r-- | src/kdata.asm | 1 |
1 files changed, 1 insertions, 0 deletions
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 |