[Bug 1874539] Re: tulip driver broken in v5.0.0-rc4

[Philippe Mathieu-Daudé]

Commit 8ffb7265af does make the code safer, but broke the device model.
Instead of setting the error bits when the frame length is incorrect (too big), 
it simply discards it. The guest is not notified of the error and keeps waiting.

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1874539

Title:
  tulip driver broken in v5.0.0-rc4

Status in QEMU:
  New

Bug description:
  In a qemu-system-hppa system, qemu release v5.0.0-rc, the tulip nic driver is 
broken.
  The tulip nic is detected, even getting DHCP info does work.
  But when trying to download bigger files via network, the tulip driver gets 
stuck.

  For example when trying to download a 100MB file:

  root@debian:~# wget https://speed.hetzner.de/100MB.bin
  --2020-04-23 20:26:43--  https://speed.hetzner.de/100MB.bin
  Resolving speed.hetzner.de (speed.hetzner.de)... 88.198.248.254, 
2a01:4f8:0:59ed::2
  Connecting to speed.hetzner.de (speed.hetzner.de)|88.198.248.254|:443... 
connected.
  <waiting and stuck here>

  When reverting this commit, everything works again:
  commit 8ffb7265af64ec81748335ec8f20e7ab542c3850
  Author: Prasad J Pandit <address@hidden>
  Date:   Tue Mar 24 22:57:22 2020 +0530
  PATCH: net: tulip: check frame size and r/w data length

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1874539/+subscriptions