Sun Microsystems 3U manual Table C-4atmutil Function Overview

Connecting, Sending, and Receiving

Data with the ATM Device Driver

Connecting to the ATM device driver involves several steps, some of which include several ioctl calls. To create 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 provided in TABLE C-4. For more detailed information, refer to the atm_util(3) man page. The ma(7) man page contains a more detailed discussion of the driver-supported ioctls.

TABLE C-4atm_util Function Overview

Name Functionality Kernel Equivalent

atm_open

atm_close

atm_attach

atm_detach

atm_bind atm_unbind atm_setraw atm_add_vpci atm_delete_vpci atm_allocate_bw

Opens a stream to the ATM device driver	Must be done by a user space setup
	program
Closes a stream to the ATM device driver	Must be done by a user space setup
	program
Attaches to a physical interface	Must be done by a user space setup
	program
Detaches from a physical interface	Must be done by a user space setup
	program
Binds to a Service Access Point	send DL_BIND_REQ
Unbinds from a Service Access Point	send DL_UNBIND_REQ
Sets the encapsulation mode to raw	Send DLIOCRAW
Associates a vpci with this connection	A_ADDVC	ioctl
Dissociates a vpci from this connection	A_DELVC	ioctl
Allocates constant bit rate bandwidth for	A_ALLOCBW ioctl
this connection

atm_allocate_cbr_bw	Allocates constant bit rate bandwidth	A_ALLOCBW_CBR	ioctl
	with more granularity than
	atm_allocate_bw
atm_allocate_vbr_bw	Allocates variable bit rate bandwidth	A_ALLOCBW_VBR	ioctl
atm_release_bw	Releases previously allocated bandwidth	A_RELSE_BW ioctl

96 SunATM 3U CompactPCI Adapter Installation and User’s Guide • February 2001