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linux/drivers/net/netdevsim/netdevsim.h

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netdevsim: add software driver for testing offloads 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:58 -08:00
netdevsim: add SR-IOV functionality 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 <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:09:01 -08:00
netdevsim: add software driver for testing offloads 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:58 -08:00
netdevsim: add bpf offload support 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:59 -08:00
netdevsim: add software driver for testing offloads 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:58 -08:00
netdevsim: add bpf offload support 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:59 -08:00
netdevsim: add SR-IOV functionality 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 <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:09:01 -08:00
netdevsim: add bpf offload support 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:59 -08:00
netdevsim: add software driver for testing offloads 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:58 -08:00
netdevsim: add bpf offload support 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:59 -08:00
netdevsim: add software driver for testing offloads 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:58 -08:00
netdevsim: add bpf offload support 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:59 -08:00
netdevsim: add SR-IOV functionality 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 <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:09:01 -08:00
netdevsim: add bpf offload support 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:59 -08:00
netdevsim: add SR-IOV functionality 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 <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:09:01 -08:00
netdevsim: add bpf offload support 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:59 -08:00
netdevsim: bpf: support fake map offload 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 <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-17 19:13:30 -08:00
netdevsim: Add simple FIB resource controller via devlink Add devlink support to netdevsim and use it to implement a simple, profile based resource controller. Only one controller is needed per namespace, so the first netdevsim netdevice in a namespace registers with devlink. If that device is deleted, the resource settings are deleted. The resource controller allows a user to limit the number of IPv4 and IPv6 FIB entries and FIB rules. The resource paths are: /IPv4 /IPv4/fib /IPv4/fib-rules /IPv6 /IPv6/fib /IPv6/fib-rules The IPv4 and IPv6 top level resources are unlimited in size and can not be changed. From there, the number of FIB entries and FIB rule entries are unlimited by default. A user can specify a limit for the fib and fib-rules resources: $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib size 96 $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib-rules size 16 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib size 64 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib-rules size 16 $ devlink dev reload netdevsim/netdevsim0 such that the number of rules or routes is limited (96 ipv4 routes in the example above): $ for n in $(seq 1 32); do ip ro add 10.99.$n.0/24 dev eth1; done Error: netdevsim: Exceeded number of supported fib entries. $ devlink resource show netdevsim/netdevsim0 netdevsim/netdevsim0: name IPv4 size unlimited unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables non resources: name fib size 96 occ 96 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables ... With this template in place for resource management, it is fairly trivial to extend and shows one way to implement a simple counter based resource controller typical of network profiles. Currently, devlink only supports initial namespace. Code is in place to adapt netdevsim to a per namespace controller once the network namespace issues are resolved. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-27 18:22:00 -07:00
netdevsim: add software driver for testing offloads 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:58 -08:00
netdevsim: add bpf offload support 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:59 -08:00
netdevsim: don't compile BPF code if syscall not enabled We should not compile netdevsim/bpf.c if BPF syscall is not enabled. Otherwise bpf core would have to provide wrappers for all functions offload drivers may call, even though system will never see a BPF object. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-23 11:22:54 -08:00
netdevsim: add bpf offload support 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 <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:08:59 -08:00
netdevsim: don't compile BPF code if syscall not enabled We should not compile netdevsim/bpf.c if BPF syscall is not enabled. Otherwise bpf core would have to provide wrappers for all functions offload drivers may call, even though system will never see a BPF object. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-23 11:22:54 -08:00
netdevsim: add SR-IOV functionality 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 <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:09:01 -08:00
netdevsim: Add simple FIB resource controller via devlink Add devlink support to netdevsim and use it to implement a simple, profile based resource controller. Only one controller is needed per namespace, so the first netdevsim netdevice in a namespace registers with devlink. If that device is deleted, the resource settings are deleted. The resource controller allows a user to limit the number of IPv4 and IPv6 FIB entries and FIB rules. The resource paths are: /IPv4 /IPv4/fib /IPv4/fib-rules /IPv6 /IPv6/fib /IPv6/fib-rules The IPv4 and IPv6 top level resources are unlimited in size and can not be changed. From there, the number of FIB entries and FIB rule entries are unlimited by default. A user can specify a limit for the fib and fib-rules resources: $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib size 96 $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib-rules size 16 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib size 64 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib-rules size 16 $ devlink dev reload netdevsim/netdevsim0 such that the number of rules or routes is limited (96 ipv4 routes in the example above): $ for n in $(seq 1 32); do ip ro add 10.99.$n.0/24 dev eth1; done Error: netdevsim: Exceeded number of supported fib entries. $ devlink resource show netdevsim/netdevsim0 netdevsim/netdevsim0: name IPv4 size unlimited unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables non resources: name fib size 96 occ 96 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables ... With this template in place for resource management, it is fairly trivial to extend and shows one way to implement a simple counter based resource controller typical of network profiles. Currently, devlink only supports initial namespace. Code is in place to adapt netdevsim to a per namespace controller once the network namespace issues are resolved. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-27 18:22:00 -07:00
netdevsim: Change nsim_devlink_setup to return error to caller Change nsim_devlink_setup to return any error back to the caller and update nsim_init to handle it. Requested-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30 09:28:51 -07:00
netdevsim: Add simple FIB resource controller via devlink Add devlink support to netdevsim and use it to implement a simple, profile based resource controller. Only one controller is needed per namespace, so the first netdevsim netdevice in a namespace registers with devlink. If that device is deleted, the resource settings are deleted. The resource controller allows a user to limit the number of IPv4 and IPv6 FIB entries and FIB rules. The resource paths are: /IPv4 /IPv4/fib /IPv4/fib-rules /IPv6 /IPv6/fib /IPv6/fib-rules The IPv4 and IPv6 top level resources are unlimited in size and can not be changed. From there, the number of FIB entries and FIB rule entries are unlimited by default. A user can specify a limit for the fib and fib-rules resources: $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib size 96 $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib-rules size 16 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib size 64 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib-rules size 16 $ devlink dev reload netdevsim/netdevsim0 such that the number of rules or routes is limited (96 ipv4 routes in the example above): $ for n in $(seq 1 32); do ip ro add 10.99.$n.0/24 dev eth1; done Error: netdevsim: Exceeded number of supported fib entries. $ devlink resource show netdevsim/netdevsim0 netdevsim/netdevsim0: name IPv4 size unlimited unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables non resources: name fib size 96 occ 96 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables ... With this template in place for resource management, it is fairly trivial to extend and shows one way to implement a simple counter based resource controller typical of network profiles. Currently, devlink only supports initial namespace. Code is in place to adapt netdevsim to a per namespace controller once the network namespace issues are resolved. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-27 18:22:00 -07:00
netdevsim: Add extack error message for devlink reload devlink reset command can fail if a FIB resource limit is set to a value lower than the current occupancy. Return a proper message indicating the reason for the failure. $ devlink resource sh netdevsim/netdevsim0 netdevsim/netdevsim0: name IPv4 size unlimited unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables none resources: name fib size unlimited occ 43 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables none name fib-rules size unlimited occ 4 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables none name IPv6 size unlimited unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables none resources: name fib size unlimited occ 54 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables none name fib-rules size unlimited occ 3 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables none $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib size 40 $ devlink dev reload netdevsim/netdevsim0 Error: netdevsim: New size is less than current occupancy. devlink answers: Invalid argument Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-05 08:14:10 -07:00
netdevsim: Add simple FIB resource controller via devlink Add devlink support to netdevsim and use it to implement a simple, profile based resource controller. Only one controller is needed per namespace, so the first netdevsim netdevice in a namespace registers with devlink. If that device is deleted, the resource settings are deleted. The resource controller allows a user to limit the number of IPv4 and IPv6 FIB entries and FIB rules. The resource paths are: /IPv4 /IPv4/fib /IPv4/fib-rules /IPv6 /IPv6/fib /IPv6/fib-rules The IPv4 and IPv6 top level resources are unlimited in size and can not be changed. From there, the number of FIB entries and FIB rule entries are unlimited by default. A user can specify a limit for the fib and fib-rules resources: $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib size 96 $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib-rules size 16 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib size 64 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib-rules size 16 $ devlink dev reload netdevsim/netdevsim0 such that the number of rules or routes is limited (96 ipv4 routes in the example above): $ for n in $(seq 1 32); do ip ro add 10.99.$n.0/24 dev eth1; done Error: netdevsim: Exceeded number of supported fib entries. $ devlink resource show netdevsim/netdevsim0 netdevsim/netdevsim0: name IPv4 size unlimited unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables non resources: name fib size 96 occ 96 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables ... With this template in place for resource management, it is fairly trivial to extend and shows one way to implement a simple counter based resource controller typical of network profiles. Currently, devlink only supports initial namespace. Code is in place to adapt netdevsim to a per namespace controller once the network namespace issues are resolved. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-27 18:22:00 -07:00
netdevsim: Change nsim_devlink_setup to return error to caller Change nsim_devlink_setup to return any error back to the caller and update nsim_init to handle it. Requested-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30 09:28:51 -07:00
netdevsim: Add simple FIB resource controller via devlink Add devlink support to netdevsim and use it to implement a simple, profile based resource controller. Only one controller is needed per namespace, so the first netdevsim netdevice in a namespace registers with devlink. If that device is deleted, the resource settings are deleted. The resource controller allows a user to limit the number of IPv4 and IPv6 FIB entries and FIB rules. The resource paths are: /IPv4 /IPv4/fib /IPv4/fib-rules /IPv6 /IPv6/fib /IPv6/fib-rules The IPv4 and IPv6 top level resources are unlimited in size and can not be changed. From there, the number of FIB entries and FIB rule entries are unlimited by default. A user can specify a limit for the fib and fib-rules resources: $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib size 96 $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib-rules size 16 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib size 64 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib-rules size 16 $ devlink dev reload netdevsim/netdevsim0 such that the number of rules or routes is limited (96 ipv4 routes in the example above): $ for n in $(seq 1 32); do ip ro add 10.99.$n.0/24 dev eth1; done Error: netdevsim: Exceeded number of supported fib entries. $ devlink resource show netdevsim/netdevsim0 netdevsim/netdevsim0: name IPv4 size unlimited unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables non resources: name fib size 96 occ 96 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables ... With this template in place for resource management, it is fairly trivial to extend and shows one way to implement a simple counter based resource controller typical of network profiles. Currently, devlink only supports initial namespace. Code is in place to adapt netdevsim to a per namespace controller once the network namespace issues are resolved. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-27 18:22:00 -07:00
netdevsim: Change nsim_devlink_setup to return error to caller Change nsim_devlink_setup to return any error back to the caller and update nsim_init to handle it. Requested-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30 09:28:51 -07:00
netdevsim: Add simple FIB resource controller via devlink Add devlink support to netdevsim and use it to implement a simple, profile based resource controller. Only one controller is needed per namespace, so the first netdevsim netdevice in a namespace registers with devlink. If that device is deleted, the resource settings are deleted. The resource controller allows a user to limit the number of IPv4 and IPv6 FIB entries and FIB rules. The resource paths are: /IPv4 /IPv4/fib /IPv4/fib-rules /IPv6 /IPv6/fib /IPv6/fib-rules The IPv4 and IPv6 top level resources are unlimited in size and can not be changed. From there, the number of FIB entries and FIB rule entries are unlimited by default. A user can specify a limit for the fib and fib-rules resources: $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib size 96 $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib-rules size 16 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib size 64 $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib-rules size 16 $ devlink dev reload netdevsim/netdevsim0 such that the number of rules or routes is limited (96 ipv4 routes in the example above): $ for n in $(seq 1 32); do ip ro add 10.99.$n.0/24 dev eth1; done Error: netdevsim: Exceeded number of supported fib entries. $ devlink resource show netdevsim/netdevsim0 netdevsim/netdevsim0: name IPv4 size unlimited unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables non resources: name fib size 96 occ 96 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables ... With this template in place for resource management, it is fairly trivial to extend and shows one way to implement a simple counter based resource controller typical of network profiles. Currently, devlink only supports initial namespace. Code is in place to adapt netdevsim to a per namespace controller once the network namespace issues are resolved. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-27 18:22:00 -07:00
netdevsim: add SR-IOV functionality 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 <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01 15:09:01 -08:00