1.\" $FreeBSD: head/share/man/man4/en.4 116294 2003-06-13 12:08:09Z harti $
| 1.\" $FreeBSD: head/share/man/man4/en.4 116296 2003-06-13 12:33:33Z harti $
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2.\"
3.Dd June 3, 2003
4.Dt EN 4
5.Os
6.Sh NAME
7.Nm en
8.Nd device driver for Midway-based ATM interfaces
9.Sh SYNOPSIS
10.Cd "device en"
11.Cd "device atm"
12.Cd "device utopia"
13.Sh DESCRIPTION
14The
15.Nm
16device driver supports Midway-based ATM interfaces including the
17Efficient Networks, Inc. ENI-155 and Adaptec ANA-59x0.
18Midway is an AAL5 SAR (Segmentation and Reassembly) chip.
19.Pp
| 2.\"
3.Dd June 3, 2003
4.Dt EN 4
5.Os
6.Sh NAME
7.Nm en
8.Nd device driver for Midway-based ATM interfaces
9.Sh SYNOPSIS
10.Cd "device en"
11.Cd "device atm"
12.Cd "device utopia"
13.Sh DESCRIPTION
14The
15.Nm
16device driver supports Midway-based ATM interfaces including the
17Efficient Networks, Inc. ENI-155 and Adaptec ANA-59x0.
18Midway is an AAL5 SAR (Segmentation and Reassembly) chip.
19.Pp
|
20The driver only supports ATM PVCs. SVC or ATM-ARP is not supported.
| 20For configuring the card for IP see
21.Xr natm 4 .
|
21.Pp
| 22.Pp
|
22To configure the card for IP, use something like:
23.Dl # ifconfig en0 128.252.200.1 netmask 0xffffff00 up
24To add a PVC to a host you must use the ``route'' command:
25.Dl # route add -iface <remote IP address> -link en0:z.0.x.y
26where x and y are the byte encoding of the VCI to use, and z is the
27byte encoding of the following flags.
28.Dl 0x01 (use AAL5),
29.Dl 0x02 (if using AAL5, use a LLCSNAP header)
30Thus, parameter 3 means AAL5 and LLC/SNAP encapsulation.
31Note that BPF works only with LLC/SNAP encapsulation.
32.Pp
33The device driver uses the
34.Xr utopia 4
35module for communication with the physical and ATM layer chip (SUNI/Lite).
36.Pp
37The following sysctls are recognized by the driver besides those implemented by
| 23The following sysctls are recognized by the driver additionally to those
24handled by
|
38.Xr utopia 4 :
39.Bl -tag -width XXX
40.It Cm hw.atm.enX.istats
41Contains an array of
42.Vt uint32_t
43with internal driver statistics.
44.It Cm hw.atm.enX.debug
45This is a bit map of debugging options.
46This variable is only available when the driver is compiled with debugging
47support.
| 25.Xr utopia 4 :
26.Bl -tag -width XXX
27.It Cm hw.atm.enX.istats
28Contains an array of
29.Vt uint32_t
30with internal driver statistics.
31.It Cm hw.atm.enX.debug
32This is a bit map of debugging options.
33This variable is only available when the driver is compiled with debugging
34support.
|
48.EL
49.Sh EXAMPLES
50Suppose you have 2 hosts 128.252.200.1 and 128.252.200.2 connected
51by ATM through PVC # 201 (0xc9).
52To enable the link use the following commands:
53.Dl on host 128.252.200.1:
54.Dl # ifconfig en0 128.252.200.1 netmask 0xffffff00 up
55.Dl # route add -iface 128.252.200.2 -link en0:3.0.0.c9
| 35.El
|
56.Pp
| 36.Pp
|
57.Dl on host 128.252.200.2:
58.Dl # ifconfig en0 128.252.200.2 netmask 0xffffff00 up
59.Dl # route add -iface 128.252.200.1 -link en0:3.0.0.c9
| 37The driver supports the media options
38.Ar sdh ,
39.Ar noscramb
40and
41.Ar unassigned
42(see
43.Xr utopia 4 ).
|
60.Sh DIAGNOSTICS
61.Bd -literal
62en0 <Efficient Networks ENI-155p> rev 0 int a irq 5 on pci0:16
63en0: ATM midway v0, board IDs 6.0, Utopia (pipelined), 512KB on-board RAM
64en0: maximum DMA burst length = 64 bytes
65en0: 7 32KB receive buffers, 8 32KB transmit buffers allocated
66.Ed
67.Sh CAVEATS
68The driver extensively uses DMA on PCI.
69The first
70generation PCI chipsets do not work or exhibit poor performance.
71.Sh SEE ALSO
| 44.Sh DIAGNOSTICS
45.Bd -literal
46en0 <Efficient Networks ENI-155p> rev 0 int a irq 5 on pci0:16
47en0: ATM midway v0, board IDs 6.0, Utopia (pipelined), 512KB on-board RAM
48en0: maximum DMA burst length = 64 bytes
49en0: 7 32KB receive buffers, 8 32KB transmit buffers allocated
50.Ed
51.Sh CAVEATS
52The driver extensively uses DMA on PCI.
53The first
54generation PCI chipsets do not work or exhibit poor performance.
55.Sh SEE ALSO
|
| 56.Xr natm 4 ,
57.Xr natmip 4 ,
|
72.Xr utopia 4 ,
73.Xr ifconfig 8 ,
74.Xr route 8
75.Sh AUTHORS
76.An Chuck Cranor
77of Washington University implemented EN driver
78in 1996 for
79.Nx .
| 58.Xr utopia 4 ,
59.Xr ifconfig 8 ,
60.Xr route 8
61.Sh AUTHORS
62.An Chuck Cranor
63of Washington University implemented EN driver
64in 1996 for
65.Nx .
|