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2024-11-11selftests: ncdevmem: Move ncdevmem under drivers/net/hwStanislav Fomichev1-789/+0
This is where all the tests that depend on the HW functionality live in and this is where the automated test is gonna be added in the next patch. Reviewed-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-12-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Run selftest when none of the -s or -c has been providedStanislav Fomichev1-10/+39
This will be used as a 'probe' mode in the selftest to check whether the device supports the devmem or not. Use hard-coded queue layout (two last queues) and prevent user from passing custom -q and/or -t. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-11-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Remove hard-coded queue numbersStanislav Fomichev1-2/+38
Use single last queue of the device and probe it dynamically. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-10-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Use YNL to enable TCP header splitStanislav Fomichev1-2/+55
In the next patch the hard-coded queue numbers are gonna be removed. So introduce some initial support for ethtool YNL and use it to enable header split. Also, tcp-data-split requires latest ethtool which is unlikely to be present in the distros right now. (ideally, we should not shell out to ethtool at all). Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-9-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Properly reset flow steeringStanislav Fomichev1-7/+12
ntuple off/on might be not enough to do it on all NICs. Add a bunch of shell crap to explicitly remove the rules. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-8-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Switch to AF_INET6Stanislav Fomichev1-29/+68
Use dualstack socket to support both v4 and v6. v4-mapped-v6 address can be used to do v4. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-7-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Remove default argumentsStanislav Fomichev1-22/+39
To make it clear what's required and what's not. Also, some of the values don't seem like a good defaults; for example eth1. Move the invocation comment to the top, add missing -s to the client and cleanup the client invocation a bit to make more readable. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-6-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Make client_ip optionalStanislav Fomichev1-3/+9
Support 3-tuple filtering by making client_ip optional. When -c is not passed, don't specify src-ip/src-port in the filter. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-5-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Unify error handlingStanislav Fomichev1-8/+8
There is a bunch of places where error() calls look out of place. Use the same error(1, errno, ...) pattern everywhere. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-4-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Separate out dmabuf providerStanislav Fomichev1-84/+119
So we can plug the other ones in the future if needed. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-3-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Redirect all non-payload output to stderrStanislav Fomichev1-31/+30
That should make it possible to do expected payload validation on the caller side. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-2-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-09-11selftests: add ncdevmem, netcat for devmem TCPMina Almasry1-0/+570
ncdevmem is a devmem TCP netcat. It works similarly to netcat, but it sends and receives data using the devmem TCP APIs. It uses udmabuf as the dmabuf provider. It is compatible with a regular netcat running on a peer, or a ncdevmem running on a peer. In addition to normal netcat support, ncdevmem has a validation mode, where it sends a specific pattern and validates this pattern on the receiver side to ensure data integrity. Suggested-by: Stanislav Fomichev <sdf@fomichev.me> Signed-off-by: Mina Almasry <almasrymina@google.com> Link: https://patch.msgid.link/20240910171458.219195-13-almasrymina@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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