Contents

ifnet_interface_family_find

Declaration

errno_t ifnet_interface_family_find(const char *module_string, ifnet_family_t *family_id);

Parameters

  • module_string:

    A unique string identifying your interface family

  • family_id:

    Upon return, a unique interface family identifier for use with ifnet_* functions. This identifier is valid until the system is rebooted.

Return Value

0 on success, otherwise errno error.

Discussion

Look up the interface family identifier for a string. If there is no interface family identifier assigned for this string a new interface family identifier is created and assigned. It is recommended to use the bundle id of the KEXT as the string to avoid collisions with other KEXTs. The lookup operation is not optimized so a module should call this function once during startup and cache the interface family identifier. The interface family identifier for a string will not be re-assigned until the system reboots.

See Also

Network Kernel Extensions