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path: root/drivers/net/netdevsim
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2018-01-23netdevsim: add extack support for TC eBPF offloadQuentin Monnet1-7/+28
Use the recently added extack support for TC eBPF filters in netdevsim. Signed-off-by: Quentin Monnet <[email protected]> Reviewed-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-01-18netdevsim: bpf: support fake map offloadJakub Kicinski2-0/+249
Add to netdevsim ability to pretend it's offloading BPF maps. We only allow allocation of tiny 2 entry maps, to keep things simple. Mutex lock may seem heavy for the operations we perform, but we want to make sure callbacks can sleep. Signed-off-by: Jakub Kicinski <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-31bpf: offload: allow netdev to disappear while verifier is runningJakub Kicinski1-1/+1
To allow verifier instruction callbacks without any extra locking NETDEV_UNREGISTER notification would wait on a waitqueue for verifier to finish. This design decision was made when rtnl lock was providing all the locking. Use the read/write lock instead and remove the workqueue. Verifier will now call into the offload code, so dev_ops are moved to offload structure. Since verifier calls are all under bpf_prog_is_dev_bound() we no longer need static inline implementations to please builds with CONFIG_NET=n. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-11/+14
Lots of overlapping changes. Also on the net-next side the XDP state management is handled more in the generic layers so undo the 'net' nfp fix which isn't applicable in net-next. Include a necessary change by Jakub Kicinski, with log message: ==================== cls_bpf no longer takes care of offload tracking. Make sure netdevsim performs necessary checks. This fixes a warning caused by TC trying to remove a filter it has not added. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> ==================== Signed-off-by: David S. Miller <[email protected]>
2017-12-20netdevsim: correctly check return value of debugfs_create_dirPrashant Bhole2-6/+8
- Checking return value with IS_ERROR_OR_NULL - Added error handling where it was not handled Signed-off-by: Prashant Bhole <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-12-20netdevsim: bpf: remove unused variableJakub Kicinski1-3/+0
skip_sw is set but no longer used. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-12-20netdevsim: declare struct device_type as staticJakub Kicinski1-1/+1
struct device_type nsim_dev_type created for SR-IOV support should be static. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-12-05netdevsim: make functions nsim_bpf_create_prog and nsim_bpf_destroy_prog staticColin Ian King1-2/+2
Functions nsim_bpf_create_prog and nsim_bpf_destroy_prog are local to the source and do not need to be in global scope, so make them static. Cleans up sparse warnings: symbol 'nsim_bpf_create_prog' was not declared. Should it be static? symbol 'nsim_bpf_destroy_prog' was not declared. Should it be static? Signed-off-by: Colin Ian King <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-12-03netdevsim: add SR-IOV functionalityJakub Kicinski2-2/+284
dummy driver was extended with VF-related netdev APIs for testing SR-IOV-related software. netdevsim did not exist back then. Implement SR-IOV functionality in netdevsim. Notable difference is that since netdevsim has no module parameters, we will actually create a device with sriov_numvfs attribute for each netdev. The zero MAC address is accepted as some HW use it to mean any address is allowed. Link state is also now validated. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-03netdevsim: add bpf offload supportJakub Kicinski4-1/+529
Add support for loading programs for netdevsim devices and expose the related information via DebugFS. Both offload of XDP and cls_bpf programs is supported. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-03netdevsim: add software driver for testing offloadsJakub Kicinski3-0/+150
To be able to run selftests without any hardware required we need a software model. The model can also serve as an example implementation for those implementing actual HW offloads. The dummy driver have previously been extended to test SR-IOV, but the general consensus seems to be against adding further features to it. Add a new driver for purposes of software modelling only. eBPF and SR-IOV will be added here shortly, others are invited to further extend the driver with their offload models. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>