On Wed, Jun 25, 2025 at 04:39:49AM -0700, Breno Leitao wrote: > Add a basic selftest for the netpoll polling mechanism, specifically > targeting the netpoll poll() side. > > The test creates a scenario where network transmission is running at > maximum speed, and netpoll needs to poll the NIC. This is achieved by: > > 1. Configuring a single RX/TX queue to create contention > 2. Generating background traffic to saturate the interface > 3. Sending netconsole messages to trigger netpoll polling > 4. Using dynamic netconsole targets via configfs > 5. Delete and create new netconsole targets after some messages > 6. Start a bpftrace in parallel to make sure netpoll_poll_dev() is > called > 7. If bpftrace exists and netpoll_poll_dev() was called, stop. > > The test validates a critical netpoll code path by monitoring traffic > flow and ensuring netpoll_poll_dev() is called when the normal TX path > is blocked. > > This addresses a gap in netpoll test coverage for a path that is > tricky for the network stack. > > Signed-off-by: Breno Leitao <leitao@xxxxxxxxxx> Hi Breno, As it looks like there will be another version, could you run pylint over this. The NIPA invocation says: ************* Module netpoll_basic .../netpoll_basic.py:323:0: C0301: Line too long (111/100) (line-too-long) .../netpoll_basic.py:27:0: E0611: No name 'bpftrace' in module 'lib.py' (no-name-in-module) .../netpoll_basic.py:79:11: E0606: Possibly using variable 'rx_queue' before assignment (possibly-used-before-assignment) .../netpoll_basic.py:79:21: E0606: Possibly using variable 'tx_queue' before assignment (possibly-used-before-assignment) .../netpoll_basic.py:253:22: W0613: Unused argument 'netdevnl' (unused-argument)
