Alexander Boettcher c02aa759e6 vbox: avoid stuck network during high tx load
- finished tx ack queue should be checked before new allocations
- packets which got not sent must be released in packet stream,
  otherwise the network packet stream gets filled up and starves after a while
- rRegister for ack avail packets and process them concurrently to EMT-* threads
  by nic_ep thread (thanks @Peter for the findings) + add synchronization.
- add sigh_ready_to_submit to network adapter to improve latency by notifying
  the network model explicitly in case we had a full packet stream error case
  (_retry resp. VERR_TRY_LATER)

Fixes #5045
2023-11-28 14:44:29 +01:00
..
2021-12-17 15:04:47 +01:00