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Message-ID: <20240502163928.2478033-1-dw@davidwei.uk>
Date: Thu, 2 May 2024 09:39:26 -0700
From: David Wei <dw@...idwei.uk>
To: netdev@...r.kernel.org
Cc: Jakub Kicinski <kuba@...nel.org>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH net-next v4 0/2] netdevsim: add NAPI support
Add NAPI support to netdevsim and register its Rx queues with NAPI
instances. Then add a selftest using the new netdev Python selftest
infra to exercise the existing Netdev Netlink API, specifically the
queue-get API.
This expands test coverage and further fleshes out netdevsim as a test
device. It's still my goal to make it useful for testing things like
flow steering and ZC Rx.
-----
Changes since v3:
* Add missing ksft_exit() at end of test
* Check for queue-api at start of test and skip early
* Don't swallow exceptions and convert to skip
Changes since v2:
* Fix null-ptr-deref on cleanup path if netdevsim is init as VF
* Handle selftest failure if real netdev fails to change queues
* Selftest addremove_queue test case:
* Skip if queues == 1
* Changes either combined or rx queue depending on how the netdev is
configured
Changes since v1:
* Use sk_buff_head instead of a list for per-rq skb queue
* Drop napi_schedule() if skb queue is not empty in napi poll
* Remove netif_carrier_on() in open()
* Remove unused page pool ptr in struct netdevsim
* Up the netdev in NetDrvEnv automatically
* Pass Netdev Netlink as a param instead of using globals
* Remove unused Python imports in selftest
David Wei (2):
netdevsim: add NAPI support
net: selftest: add test for netdev netlink queue-get API
drivers/net/netdevsim/netdev.c | 209 +++++++++++++++++-
drivers/net/netdevsim/netdevsim.h | 8 +-
tools/testing/selftests/drivers/net/Makefile | 1 +
.../selftests/drivers/net/lib/py/env.py | 6 +-
tools/testing/selftests/drivers/net/queues.py | 66 ++++++
tools/testing/selftests/net/lib/py/nsim.py | 4 +-
tools/testing/selftests/net/lib/py/utils.py | 8 +-
7 files changed, 282 insertions(+), 20 deletions(-)
create mode 100755 tools/testing/selftests/drivers/net/queues.py
--
2.43.0
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