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path: root/drivers/net/netdevsim
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2019-10-08netdevsim: fix spelling mistake "forbidded" -> "forbid"Colin Ian King
There is a spelling mistake in a NL_SET_ERR_MSG_MOD message. Fix it. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
2019-10-07netdevsim: implement devlink dev_info opJiri Pirko
Do simple dev_info devlink operation implementation which only fills up the driver name. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-06netdevsim: add couple of debugfs bools to debug devlink reloadJiri Pirko
Add flag to disallow reload and another one that causes reload to always fail. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-05netdevsim: create devlink and netdev instances in namespaceJiri Pirko
When user does create new netdevsim instance using sysfs bus file, create the devlink instance and related netdev instance in the namespace of the caller. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-04net: devlink: allow to change namespaces during reloadJiri Pirko
All devlink instances are created in init_net and stay there for a lifetime. Allow user to be able to move devlink instances into namespaces during devlink reload operation. That ensures proper re-instantiation of driver objects, including netdevices. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-04netdevsim: take devlink net instead of init_netJiri Pirko
Follow-up patch is going to allow to reload devlink instance into different network namespace, so use devlink_net() helper instead of init_net. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-04netdevsim: register port netdevices into net of deviceJiri Pirko
Register newly created port netdevice into net namespace that the parent device belongs to. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-04netdevsim: implement proper devlink reloadJiri Pirko
During devlink reload, all driver objects should be reinstantiated with the exception of devlink instance and devlink resources and params. Move existing devlink_resource_size_get() calls into fib_create() just before fib notifier is registered. Also, make sure that extack is propagated down to fib_notifier_register() call. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-04netdevsim: add all ports in nsim_dev_create() and del them in destroy()Jiri Pirko
Currently the probe/remove function does this separately. Put the addition an deletion of ports into nsim_dev_create() and nsim_dev_destroy(). Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-04net: fib_notifier: propagate extack down to the notifier block callbackJiri Pirko
Since errors are propagated all the way up to the caller, propagate possible extack of the caller all the way down to the notifier block callback. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-04net: fib_notifier: make FIB notifier per-netnsJiri Pirko
Currently all users of FIB notifier only cares about events in init_net. Later in this patchset, users get interested in other namespaces too. However, for every registered block user is interested only about one namespace. Make the FIB notifier registration per-netns and avoid unnecessary calls of notifier block for other namespaces. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-04netdevsim: change fib accounting and limitations to be per-deviceJiri Pirko
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 <jiri@mellanox.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-16netdevsim: Set offsets to various protocol layersIdo Schimmel
The driver periodically generates "trapped" UDP packets that it then passes on to devlink. Set the offsets to the various protocol layers. This is a prerequisite to the next patch, where drop monitor is taught to check that the offset to the MAC header was set. Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-13net: devlink: split reload op into twoJiri Pirko
In order to properly implement failure indication during reload, split the reload op into two ops, one for down phase and one for up phase. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-20netdevsim: Fix build error without CONFIG_INETYueHaibing
If CONFIG_INET is not set, building fails: drivers/net/netdevsim/dev.o: In function `nsim_dev_trap_report_work': dev.c:(.text+0x67b): undefined reference to `ip_send_check' Use ip_fast_csum instead of ip_send_check to avoid dependencies on CONFIG_INET. Reported-by: Hulk Robot <hulkci@huawei.com> Fixes: da58f90f11f5 ("netdevsim: Add devlink-trap support") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Tested-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller
Merge conflict of mlx5 resolved using instructions in merge commit 9566e650bf7fdf58384bb06df634f7531ca3a97e. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-17Documentation: Add description of netdevsim trapsIdo Schimmel
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-17netdevsim: Add devlink-trap supportIdo Schimmel
Have netdevsim register its trap groups and traps with devlink during initialization and periodically report trapped packets to devlink core. Since netdevsim is not a real device, the trapped packets are emulated using a workqueue that periodically reports a UDP packet with a random 5-tuple from each active packet trap and from each running netdev. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-15netdevsim: implement support for devlink region and snapshotsJiri Pirko
Implement dummy region of size 32K and allow user to create snapshots or random data using debugfs file trigger. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-11netdevsim: register couple of devlink paramsJiri Pirko
Register couple of devlink params, one generic, one driver-specific. Make the values available over debugfs. Example: $ echo "111" > /sys/bus/netdevsim/new_device $ devlink dev param netdevsim/netdevsim111: name max_macs type generic values: cmode driverinit value 32 name test1 type driver-specific values: cmode driverinit value true $ cat /sys/kernel/debug/netdevsim/netdevsim111/max_macs 32 $ cat /sys/kernel/debug/netdevsim/netdevsim111/test1 Y $ devlink dev param set netdevsim/netdevsim111 name max_macs cmode driverinit value 16 $ devlink dev param set netdevsim/netdevsim111 name test1 cmode driverinit value false $ devlink dev reload netdevsim/netdevsim111 $ cat /sys/kernel/debug/netdevsim/netdevsim111/max_macs 16 $ cat /sys/kernel/debug/netdevsim/netdevsim111/test1 Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-11netdevsim: Restore per-network namespace accounting for fib entriesDavid Ahern
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 <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-09drivers: net: use flow block APIPablo Neira Ayuso
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 <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-09net: flow_offload: add flow_block_cb_setup_simple()Pablo Neira Ayuso
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 <pablo@netfilter.org> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-04netdevsim: implement fake flash updating with notificationsJiri Pirko
Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-05netdevsim: Make nsim_num_vf staticYueHaibing
Fix sparse warning: drivers/net/netdevsim/bus.c:253:5: warning: symbol 'nsim_num_vf' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-01netdevsim: fix fall-through annotationGustavo A. R. Silva
Replace "pass through" with a proper "fall through" annotation in order to fix the following warning: drivers/net/netdevsim/bus.c: In function ‘new_device_store’: drivers/net/netdevsim/bus.c:170:14: warning: this statement may fall through [-Wimplicit-fallthrough=] port_count = 1; ~~~~~~~~~~~^~~ drivers/net/netdevsim/bus.c:172:2: note: here case 2: ^~~~ Warning level 3 was used: -Wimplicit-fallthrough=3 This fix is part of the ongoing efforts to enable -Wimplicit-fallthrough Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: implement ndo_get_devlink_portJiri Pirko
Implement ndo_get_devlink_port and allow switch_id and port_name to be handled by devlink. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: move netdev creation/destruction to dev probeJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: extend device attrs to support port addition and deletionJiri Pirko
In order to test flows in core, it is beneficial to maintain previously supported possibility to add and delete ports during netdevsim lifetime. Do it by extending device sysfs attrs by "new_port" and "del_port". Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: implement dev probe/remove skeleton with port initializationJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: change debugfs tree topologyJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: generate random switch id instead of using dev idJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: merge sdev into devJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: rename dev_init/exit() functions and make them independent on nsJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: add bus attributes to add new and delete devicesJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: use ida for bus device idsJiri Pirko
Instead of increments of u32 value, use ida to manage bus device ids. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: add stub netdevsim driver implementationJiri Pirko
In order to bus probing to work correctly, register a simple netdevsim driver implementation. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: move device registration and related code to bus.cJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: put netdevsim bus code into separate fileJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: rename devlink.c to dev.c to contain per-dev(asic) itemsJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: create devlink instance per netdevsim instanceJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26netdevsim: move device registration on bus to be done earlier in initJiri Pirko
As a dependency of the subsequent patch, mode device registration to be done earlier, directly in nsim_newlink(). Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-12netdevsim: move sdev-specific init/uninit code into separate functionsJiri Pirko
In order to improve readability and prepare for future code changes, move sdev specific init/uninit code into separate functions. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-12netdevsim: make bpf_offload_dev_create() per-sdev instead of first nsJiri Pirko
offload dev is stored in sdev struct. However, first netdevsim instance is used as a priv. Change this to be sdev to as it is shared among multiple netdevsim instances. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-12netdevsim: move sdev specific bpf debugfs files to sdev dirJiri Pirko
Some netdevsim bpf debugfs files are per-sdev, yet they are defined per netdevsim instance. Move them under sdev directory. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-12netdevsim: move shared dev creation and destruction into separate fileJiri Pirko
To make code easier to read, move shared dev bits into a separate file. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-09netdevsim: assume CONFIG_NET_DEVLINK is always enabledJiri Pirko
Since commit f6b19b354d50 ("net: devlink: select NET_DEVLINK from drivers") adds implicit select of NET_DEVLINK for netdevsim, the code does not have to deal with the case when CONFIG_NET_DEVLINK is not enabled. So remove the ifcase. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-09netdevsim: let net core to free netdevsim netdevJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-09netdevsim: remove nsim_dellink() implementationJiri Pirko
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 <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-12bpf: offload: add priv field for driversJakub Kicinski
Currently bpf_offload_dev does not have any priv pointer, forcing the drivers to work backwards from the netdev in program metadata. This is not great given programs are conceptually associated with the offload device, and it means one or two unnecessary deferences. Add a priv pointer to bpf_offload_dev. 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>
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