8 .Nd device driver for IDT NICStAR-based ATM interfaces
15 device driver supports ATM network interfaces based on the
16 IDT NICStAR 77211 controller, including the FORE Systems
17 ForeRunner LE25 and LE155.
18 For configuring the card for IP see
21 ATM CBR connections are supported, and bandwidth is allocated in
23 Three VBR queues handle traffic for VBR and UBR.
24 Two UBR queues prioritize UBR traffic.
25 ILMI and signalling get the higher priority queue, as well as UBR traffic
26 that specifies a peak cell rate.
27 All other UBR traffic goes into the lower queue.
29 The following sysctls are recognized by the driver:
30 .Bl -tag -width indent
31 .It Va hw.idt.log_bufstat
32 Print statistics about buffer use to the system log periodically.
34 Print information about VC opens, closes, and other events to the system log.
35 .It Va hw.idt.bufs_large
36 Set or print the maximum size of the 2KB buffer queue.
37 .It Va hw.idt.bufs_small
38 Set or print the maximum size of the mbuf queue.
39 .It Va hw.idt.cur_large
40 Print the current size of the 2KB buffer queue.
41 .It Va hw.idt.cur_small
42 Print the current size of the mbuf queue.
43 .It Va hw.idt.qptr_hold
44 Optimize the TX queue buffer for lowest overhead.
54 based on the original driver for
59 wrote this manual page and backported the driver to