8
Sets the
if_version
member of the
ifnet
data structure for this
device to the string
3Com EtherLink III
.
6.7 Setting the Baud Rate
The following code shows how the
el_attach( )
routine sets the baud rate:
ifp->if_baudrate = ETHER_BANDWIDTH_10MB;
1
1
Sets the
if_baudrate
member of the
ifnet
data structure for this
device to the constant
ETHER_BANDWIDTH_10MB
. The
if_baudrate
member specifies the line speed.
You can use the following media-specific constants:
ETHER_BANDWIDTH_10MB
Ethernet line speed is 10 megabits per second.
The
if_ether.h
file defines the
ETHER_BAND-
WIDTH_10MB
constant.
ETHER_BANDWIDTH_100MB
Fast Ethernet line speed is 100 megabits per second.
The
if_ether.h
file defines the
ETHER_BAND-
WIDTH_100MB
constant.
FDDI_BANDWIDTH_100MB
FDDI line speed is 100 megabits per second. The
if_fddi.h
file defines the
FDDI_BANDWIDTH_100MB
constant.
TRN_BANDWIDTH_4MB
Token Ring line speed is 4 megabits per second. The
if_trn.h
file defines the
TRN_BANDWIDTH_4MB
constant.
TRN_BANDWIDTH_16MB
Token Ring line speed is 16 megabits per second. The
if_trn.h
file defines the
TRN_BANDWIDTH_16MB
constant.
6.8 Attaching to the Packet Filter and the Network Layer
The following code shows how the
el_attach( )
routine attaches to the
packet filter and the network layer:
attachpfilter(&(sc->is_ed));
1
if_attach(ifp);
2
el_conf+;
3
1
Calls the
attachpfilter( )
routine to inform the packet filter driver
about this network driver. The
attachpfilter( )
routine is passed
a pointer to the
ether_driver
data structure for this network device
driver.
6–8 Implementing the Autoconfiguration Support Section (attach)
