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path: root/drivers/net/netdevsim/netdev.c
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2020-09-15netdevsim: add pause frame statsJakub Kicinski1-0/+1
Add minimal ethtool interface for testing ethtool pause stats. v2: add missing static on nsim_ethtool_ops Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Saeed Mahameed <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-07-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller1-1/+1
The UDP reuseport conflict was a little bit tricky. The net-next code, via bpf-next, extracted the reuseport handling into a helper so that the BPF sk lookup code could invoke it. At the same time, the logic for reuseport handling of unconnected sockets changed via commit efc6b6f6c3113e8b203b9debfb72d81e0f3dcace which changed the logic to carry on the reuseport result into the rest of the lookup loop if we do not return immediately. This requires moving the reuseport_has_conns() logic into the callers. While we are here, get rid of inline directives as they do not belong in foo.c files. The other changes were cases of more straightforward overlapping modifications. Signed-off-by: David S. Miller <[email protected]>
2020-07-21netdevsim: fix unbalaced locking in nsim_create()Taehee Yoo1-2/+2
In the nsim_create(), rtnl_lock() is called before nsim_bpf_init(). If nsim_bpf_init() is failed, rtnl_unlock() should be called, but it isn't called. So, unbalanced locking would occur. Fixes: e05b2d141fef ("netdevsim: move netdev creation/destruction to dev probe") Signed-off-by: Taehee Yoo <[email protected]> Reviewed-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-07-10netdevsim: add UDP tunnel port offload supportJakub Kicinski1-1/+11
Add UDP tunnel port handlers to our fake driver so we can test the core infra. Signed-off-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-10-04netdevsim: register port netdevices into net of deviceJiri Pirko1-0/+1
Register newly created port netdevice into net namespace that the parent device belongs to. Signed-off-by: Jiri Pirko <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-10-04netdevsim: change fib accounting and limitations to be per-deviceJiri Pirko1-8/+1
Currently, the accounting is done per-namespace. However, devlink instance is always in init_net namespace for now, so only the accounting related to init_net is used. Limitations set using devlink resources are only considered for init_net. nsim_devlink_net() always returns init_net always. Make the accounting per-device. This brings no functional change. Per-device accounting has the same values as per-net. For a single netdevsim instance, the behaviour is exactly the same as before. When multiple netdevsim instances are created, each can have different limits. This is in prepare to implement proper devlink netns support. After that, the devlink instance which would exist in particular netns would account and limit that netns. Signed-off-by: Jiri Pirko <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-11netdevsim: Restore per-network namespace accounting for fib entriesDavid Ahern1-1/+8
Prior to the commit in the fixes tag, the resource controller in netdevsim tracked fib entries and rules per network namespace. Restore that behavior. Fixes: 5fc494225c1e ("netdevsim: create devlink instance per netdevsim instance") Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-09drivers: net: use flow block APIPablo Neira Ayuso1-1/+4
This patch updates flow_block_cb_setup_simple() to use the flow block API. Several drivers are also adjusted to use it. This patch introduces the per-driver list of flow blocks to account for blocks that are already in use. Remove tc_block_offload alias. Signed-off-by: Pablo Neira Ayuso <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-09net: flow_offload: add flow_block_cb_setup_simple()Pablo Neira Ayuso1-21/+5
Most drivers do the same thing to set up the flow block callbacks, this patch adds a helper function to do this. This preparation patch reduces the number of changes to adapt the existing drivers to use the flow block callback API. This new helper function takes a flow block list per-driver, which is set to NULL until this driver list is used. This patch also introduces the flow_block_command and flow_block_binder_type enumerations, which are renamed to use FLOW_BLOCK_* in follow up patches. There are three definitions (aliases) in order to reduce the number of updates in this patch, which go away once drivers are fully adapted to use this flow block API. Signed-off-by: Pablo Neira Ayuso <[email protected]> Reviewed-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: implement ndo_get_devlink_portJiri Pirko1-0/+8
Implement ndo_get_devlink_port and allow switch_id and port_name to be handled by devlink. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: move netdev creation/destruction to dev probeJiri Pirko1-89/+49
Remove the existing way to create netdevsim over rtnetlink and move the netdev creation/destruction to dev probe, so for every probed port, a netdevsim-netdev instance is created. Adjust selftests to work with new interface. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: implement dev probe/remove skeleton with port initializationJiri Pirko1-11/+4
Implement netdevsim bus probing of netdevsim devices. For every probed device create a devlink instance. According to the user-passed value, create a number of ports represented by devlink port instances. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: change debugfs tree topologyJiri Pirko1-12/+3
With the model where dev is represented by devlink and ports are represented by devlink ports, make debugfs file names independent on netdev names. Change the topology to the one illustrated by the following example: $ ls /sys/kernel/debug/netdevsim/ netdevsim1 $ ls /sys/kernel/debug/netdevsim/netdevsim1/ bpf_bind_accept bpf_bind_verifier_delay bpf_bound_progs ports $ ls /sys/kernel/debug/netdevsim/netdevsim1/ports/ 0 1 $ ls /sys/kernel/debug/netdevsim/netdevsim1/ports/0/ bpf_map_accept bpf_offloaded_id bpf_tc_accept bpf_tc_non_bound_accept bpf_xdpdrv_accept bpf_xdpoffload_accept dev ipsec $ ls /sys/kernel/debug/netdevsim/netdevsim1/ports/0/dev -l lrwxrwxrwx 1 root root 0 Apr 13 15:58 /sys/kernel/debug/netdevsim/netdevsim1/ports/0/dev -> ../../../netdevsim1 Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: generate random switch id instead of using dev idJiri Pirko1-2/+1
Current implementation of parent_id/switch_id does not follow the original idea of being unique. The values are "0", "1", etc. Instead of that, generate 32 random bytes. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: merge sdev into devJiri Pirko1-36/+13
As previously introduce dev which is mapped 1:1 to a bus device covers the purpose of the original shared device, merge the sdev code into dev. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: rename dev_init/exit() functions and make them independent on nsJiri Pirko1-6/+8
These functions are going to be called from bus probe/release(), therefore make them independent on ns struct and rename accordingly. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: add bus attributes to add new and delete devicesJiri Pirko1-1/+1
Add a way to add new netdevsim device on netdevsim bus and also to delete existing netdevsim device from the bus. Track the bus devices in using a list. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: move device registration and related code to bus.cJiri Pirko1-150/+45
Move netdevsim device registration into bus.c and alongside with that the related sysfs attributes. Introduce new struct nsim_bus_dev to represent a netdevsim device on netdevsim bus. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: put netdevsim bus code into separate fileJiri Pirko1-12/+6
As the code related to netdevsim bus is going to get bigger, move the existing code to a separate file. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: rename devlink.c to dev.c to contain per-dev(asic) itemsJiri Pirko1-5/+5
The existing devlink.c code is going to be extended to represent asic device on a bus. As this is about more than just devlink, rename the file. Do appropriate prefix renaming alongside with that. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: create devlink instance per netdevsim instanceJiri Pirko1-17/+10
Currently there is one devlink instance created per network namespace. That is quite odd considering the fact that devlink instance should represent an ASIC. The following patches are going to move the devlink instance even more down to a bus device, but until then, have one devlink instance per netdevsim instance. Struct nsim_devlink is introduced to hold fib setting. The changes in the fib code are only related to holding the configuration per devlink instance instead of network namespace. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-26netdevsim: move device registration on bus to be done earlier in initJiri Pirko1-13/+13
As a dependency of the subsequent patch, mode device registration to be done earlier, directly in nsim_newlink(). Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-12netdevsim: move shared dev creation and destruction into separate fileJiri Pirko1-49/+27
To make code easier to read, move shared dev bits into a separate file. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-09netdevsim: let net core to free netdevsim netdevJiri Pirko1-1/+1
No need to free it ourselves, just set the "needs_free_netdev" flag and leave the work to net core. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-09netdevsim: remove nsim_dellink() implementationJiri Pirko1-6/+0
Remove nsim_dellink() implementation. The rtnetlink code sets the dellink op to unregister_netdevice_queue(), so this is not needed. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-02-06netdevsim: Implement ndo_get_port_parent_id()Florian Fainelli1-17/+6
netdevsim only supports SWITCHDEV_ATTR_ID_PORT_PARENT_ID, which makes it a great candidate to be converted to use the ndo_get_port_parent_id() NDO instead of implementing switchdev_port_attr_get(). Acked-by: Jiri Pirko <[email protected]> Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-07-26netdevsim: make debug dirs' dentries staticJakub Kicinski1-3/+3
The root directories of netdevsim should only be used by the core to create per-device subdirectories, so limit their visibility to the core file. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-07-18netdevsim: add shared netdevsim devicesJakub Kicinski1-6/+81
Factor out sharable netdevsim sub-object and use IFLA_LINK to link netdevsims together at creation time. Sharable object will have its own DebugFS directory. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-07-18netdevsim: add switch_id attributeJakub Kicinski1-0/+24
Grouping netdevsim devices into "ASICs" will soon be supported. Add switch_id attribute to all netdevsims. For now each netdevsim will have its switch_id matching the device id. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-07-13netdevsim: add support for simultaneous driver and hw XDPJakub Kicinski1-2/+1
Allow netdevsim to accept driver and offload attachment of XDP BPF programs at the same time. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-06-28netdevsim: add ipsec offload testingShannon Nelson1-0/+7
Implement the IPsec/XFRM offload API for testing. Signed-off-by: Shannon Nelson <[email protected]> Reviewed-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-06-26net: sched: pass extack pointer to block binds and cb registrationJohn Hurley1-1/+1
Pass the extact struct from a tc qdisc add to the block bind function and, in turn, to the setup_tc ndo of binding device via the tc_block_offload struct. Pass this back to any block callback registrations to allow netlink logging of fails in the bind process. Signed-off-by: John Hurley <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Acked-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-03-31netdevsim: Change nsim_devlink_setup to return error to callerDavid Ahern1-1/+5
Change nsim_devlink_setup to return any error back to the caller and update nsim_init to handle it. Requested-by: Jakub Kicinski <[email protected]> Signed-off-by: David Ahern <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-03-29netdevsim: Add simple FIB resource controller via devlinkDavid Ahern1-1/+11
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 <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-12-20netdevsim: correctly check return value of debugfs_create_dirPrashant Bhole1-2/+4
- 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: 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]>
2017-12-03netdevsim: add SR-IOV functionalityJakub Kicinski1-2/+272
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 Kicinski1-1/+115
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 Kicinski1-0/+118
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]>
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