When the netlink buffer overflows and upcalls get dropped, we increase
a coverage counter and log it but we don't have information of what
specific packet was dropped and were it came from.
This series improves upcall_monitor.py to do that.
---
v4:
- Improve scapy version detection and work-arounds.
- Improve tracefs detection and error message.
v3:
- Resend as some patches were missing.
- Automatically disable error monitoring if not supported.
- Fix flake8 warnings.
v2:
- Address Eelco's comments.
- Add a retry mechanism to dp cache.
Adrian Moreno (8):
utilities: usdt-scripts: Remove sleep in loop.
utilities: upcall_monitor: Monitor dropped upcalls.
utilities: upcall_monitor: Allow filtering on result.
utilities: upcall_cost: Refactor port mapping cache.
utilities: upcall_monitor: Print port names.
utilities: monitor_upcalls: Print ports from drops.
utilities: upcall_monitor: Add extra info to pcap.
utilities: usdt-scripts: Retry on dp cache miss.
utilities/automake.mk | 7 +-
utilities/usdt-scripts/dpif_op_nl_monitor.py | 2 -
utilities/usdt-scripts/upcall_cost.py | 73 +---
utilities/usdt-scripts/upcall_monitor.py | 357 ++++++++++++++-----
utilities/usdt-scripts/usdt_lib.py | 102 ++++++
5 files changed, 393 insertions(+), 148 deletions(-)
create mode 100644 utilities/usdt-scripts/usdt_lib.py
--
2.48.1
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