Jiri Pirko fc56be47da devlink: convert occ_get op to separate registration ... This resolves race during initialization where the resources with ops are registered before driver and the structures used by occ_get op is initialized. So keep occ_get callbacks registered only when all structs are initialized. The example flows, as it is in mlxsw: 1) driver load/asic probe: mlxsw_core -> mlxsw_sp_resources_register -> mlxsw_sp_kvdl_resources_register -> devlink_resource_register IDX mlxsw_spectrum -> mlxsw_sp_kvdl_init -> mlxsw_sp_kvdl_parts_init -> mlxsw_sp_kvdl_part_init -> devlink_resource_size_get IDX (to get the current setup size from devlink) -> devlink_resource_occ_get_register IDX (register current occupancy getter) 2) reload triggered by devlink command: -> mlxsw_devlink_core_bus_device_reload -> mlxsw_sp_fini -> mlxsw_sp_kvdl_fini -> devlink_resource_occ_get_unregister IDX (struct mlxsw_sp *mlxsw_sp is freed at this point, call to occ get which is using mlxsw_sp would cause use-after free) -> mlxsw_sp_init -> mlxsw_sp_kvdl_init -> mlxsw_sp_kvdl_parts_init -> mlxsw_sp_kvdl_part_init -> devlink_resource_size_get IDX (to get the current setup size from devlink) -> devlink_resource_occ_get_register IDX (register current occupancy getter) Fixes: d9f9b9a4d0 ("devlink: Add support for resource abstraction") Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-04-08 12:45:57 -04:00
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Makefile	netdevsim: Add simple FIB resource controller via devlink	2018-03-29 14:10:31 -04:00
bpf.c	netdevsim: fix overflow on the error path	2018-02-01 11:22:51 +01:00
devlink.c	devlink: convert occ_get op to separate registration	2018-04-08 12:45:57 -04:00
fib.c	netdevsim: remove incorrect __net_initdata annotations	2018-04-04 12:53:37 -04:00
netdev.c	netdevsim: Change nsim_devlink_setup to return error to caller	2018-03-31 22:22:10 -04:00
netdevsim.h	netdevsim: Change nsim_devlink_setup to return error to caller	2018-03-31 22:22:10 -04:00