linux/drivers/net/netdevsim/netdev.c, branch v6.14

net: move HDS config from ethtool state

2025-01-20T19:44:57Z

Separate the HDS config from the ethtool state struct. The HDS config contains just simple parameters, not state. Having it as a separate struct will make it easier to clone / copy and also long term potentially make it per-queue. Reviewed-by: Michael Chan Link: https://patch.msgid.link/20250119020518.1962249-2-kuba@kernel.org Signed-off-by: Jakub Kicinski

netdevsim: add HDS feature

2025-01-15T22:42:12Z

HDS options(tcp-data-split, hds-thresh) have dependencies between other features like XDP. Basic dependencies are checked in the core API. netdevsim is very useful to check basic dependencies. The default tcp-data-split mode is UNKNOWN but netdevsim driver returns ENABLED when ethtool dumps tcp-data-split mode. The default value of HDS threshold is 0 and the maximum value is 1024. ethtool shows like this. ethtool -g eni1np1 Ring parameters for eni1np1: Pre-set maximums: ... HDS thresh: 1024 Current hardware settings: ... TCP data split: on HDS thresh: 0 ethtool -G eni1np1 tcp-data-split on hds-thresh 1024 ethtool -g eni1np1 Ring parameters for eni1np1: Pre-set maximums: ... HDS thresh: 1024 Current hardware settings: ... TCP data split: on HDS thresh: 1024 Signed-off-by: Taehee Yoo Link: https://patch.msgid.link/20250114142852.3364986-10-ap420073@gmail.com Signed-off-by: Jakub Kicinski

netdevsim: add debugfs-triggered queue reset

2025-01-09T14:33:08Z

Support triggering queue reset via debugfs for an upcoming test. Reviewed-by: Willem de Bruijn Acked-by: Stanislav Fomichev Signed-off-by: Jakub Kicinski Reviewed-by: Mina Almasry Signed-off-by: Paolo Abeni

netdevsim: add queue management API support

2025-01-09T14:33:08Z

Add queue management API support. We need a way to reset queues to test NAPI reordering, the queue management API provides a handy scaffolding for that. Reviewed-by: Willem de Bruijn Acked-by: Stanislav Fomichev Signed-off-by: Jakub Kicinski Reviewed-by: Mina Almasry Signed-off-by: Paolo Abeni

netdevsim: add queue alloc/free helpers

2025-01-09T14:33:08Z

We'll need the code to allocate and free queues in the queue management API, factor it out. Reviewed-by: Willem de Bruijn Reviewed-by: Eric Dumazet Signed-off-by: Jakub Kicinski Signed-off-by: Paolo Abeni

netdevsim: allocate rqs individually

2025-01-09T14:33:08Z

Make nsim->rqs an array of pointers and allocate them individually so that we can swap them out one by one. Reviewed-by: Willem de Bruijn Reviewed-by: Eric Dumazet Signed-off-by: Jakub Kicinski Signed-off-by: Paolo Abeni

netdevsim: support NAPI config

2025-01-09T14:33:08Z

Link the NAPI instances to their configs. This will be needed to test that NAPI config doesn't break list ordering. Reviewed-by: Willem de Bruijn Reviewed-by: Eric Dumazet Signed-off-by: Jakub Kicinski Signed-off-by: Paolo Abeni

net: netdevsim: fix nsim_pp_hold_write()

2024-12-18T01:46:17Z

nsim_pp_hold_write() has two problems: 1) It may return with rtnl held, as found by syzbot. 2) Its return value does not propagate an error if any. Fixes: 1580cbcbfe77 ("net: netdevsim: add some fake page pool use") Reported-by: syzbot Signed-off-by: Eric Dumazet Reviewed-by: Simon Horman Link: https://patch.msgid.link/20241216083703.1859921-1-edumazet@google.com Signed-off-by: Jakub Kicinski

netdevsim: add more hw_features

2024-11-11T22:12:20Z

netdevsim currently only set HW_TC in its hw_features, but other features should also be present to better reflect the behavior of real HW. In my macsec offload testing, this ends up as HW_CSUM being missing from hw_features, so it doesn't stick in wanted_features when offload is turned off. Then HW_CSUM (and thus TSO, thanks to netdev_fix_features) is not automatically turned back on when offload is re-enabled. Signed-off-by: Sabrina Dubroca Reviewed-by: Simon Horman Link: https://patch.msgid.link/b918dc4dd76410a57f7516a855f66b0a2bd58326.1730929545.git.sd@queasysnail.net Signed-off-by: Jakub Kicinski

testing: net-drv: add basic shaper test

2024-10-10T15:30:23Z

Leverage a basic/dummy netdevsim implementation to do functional coverage for NL interface. Reviewed-by: Jiri Pirko Signed-off-by: Paolo Abeni Link: https://patch.msgid.link/43092afbf38365c796088bf8fc155e523ab434ae.1728460186.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski