96 SunATM 3U CompactPCI Adapter Installation and User’s Guide • February 2001
Connecting, Sending, and ReceivingData with the ATM Device Driver
Connecting to the ATMdevice driver involves several steps, some of which include
several ioctl calls. Tocreate a more standardized interface for user space
applications, a set of atm_util functions is available to application writers. An
overview of those functions is providedin TABLE C-4. For more detailed information,
refer to the atm_util(3) man page. The ma(7) man page contains a moredetailed
discussion of the driver-supported ioctls.
TABLEC-4 atm_util Function Overview
Name Functionality KernelEquivalent
atm_open Opensa stream to the ATM device driver Mustbe done by a userspace setup
program
atm_close Closesa stream to the ATM device driver Mustbe done by a user space setup
program
atm_attach Attaches to a physical interface Mustbe done by a user space setup
program
atm_detach Detaches from a physical interface Mustbe done by a user space setup
program
atm_bind Binds to a Service Access Point sendDL_BIND_REQ
atm_unbind Unbinds froma Service Access Point send DL_UNBIND_REQ
atm_setraw Sets the encapsulation mode to raw Send DLIOCRAW
atm_add_vpci Associates a vpci with this connection A_ADDVC ioctl
atm_delete_vpci Dissociates a vpci fromthis connection A_DELVC ioctl
atm_allocate_bw Allocatesconstant bit rate bandwidth for
this connection A_ALLOCBW ioctl
atm_allocate_cbr_bw Allocates constant bit rate bandwidth
with more granularity than
atm_allocate_bw
A_ALLOCBW_CBR ioctl
atm_allocate_vbr_bw Allocates variable bit rate bandwidth A_ALLOCBW_VBR ioctl
atm_release_bw Releases previouslyallocated bandwidth A_RELSE_BW ioctl