sf_ioctl Your function for handling ioctls. May be null. Declarationsf_ioctl_func sf_ioctl; See AlsoFieldssf_handlesf_flagssf_namesf_unregisteredsf_attachsf_detachsf_notifysf_data_insf_data_outsf_connect_insf_connect_outsf_bindsf_setoptionsf_getoptionsf_listensf_lensf_ext_acceptsf_ext_rsvd