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Open vSwitch uses Generic Netlink interface for communication between userspace and kernel module. genl_notify() is used for sending notification back to userspace. genl_notify() is analogous to rtnl_notify() but uses genl_sock instead of rtnl. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>