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31 .\" $DragonFly: src/share/man/man4/et.4,v 1.2 2007/10/23 14:28:42 sephe Exp $
38 .Nd "Agere ET1310 10/100/Gigabit Ethernet device"
43 Alternatively, to load the driver as a module at boot time, place the
45 .Pa /boot/loader.conf :
46 .Bd -literal -offset indent
52 driver supports the PCIe Ethernet adapters based on Agere ET1310.
54 Support for Jumbo Frames is provided via the interface MTU setting.
55 Selecting an MTU larger than 1500 bytes with the
57 utility configures the adapter to receive and transmit Jumbo Frames.
58 The maximum MTU setting for Jumbo Frames is 15572.
59 This value coincides with the maximum Jumbo Frames size of 15594.
63 driver supports the following
67 .Bl -tag -width 10baseT/UTP -compact
69 Enable autoselection of the media types and options
75 option can also be used to select either
82 Set 100Mbps (Fast Ethernet) operation.
85 option can also be used to select either
92 Set 1000Mbps (Gigabit Ethernet) operation.
95 option can only be set
102 driver supports the following
106 .Bl -tag -width full-duplex -compact
108 Force full duplex operation.
111 Force half duplex operation.
114 Note that the 1000baseT media type is only available
115 if it is supported by the adapter.
116 For more information on configuring this device,
120 .Bl -tag -width ".Va hw.et.rx_intr_npkts"
121 .It Va hw.et.rx_intr_npkts
122 This value controls how many packets should be recevied
123 before a receive interrupt is generated.
124 The default value is 32.
125 .It Va hw.et.rx_intr_delay
126 This value delays the generation of receive interrupts
127 in units of 10 microseconds (I guess).
128 It is used together with
129 .Va hw.et.rx_intr_npkts
130 to achieve RX interrupt moderation.
131 The default value is 20.
132 .It Va hw.et.tx_intr_nsegs
133 This value controls how many segments (not packets) should be transmitted
134 before a transmit interrupt is generated.
135 The default value is 126.
137 This value controls how often the a timer interrupt should be generated.
138 It is used together with
139 .Va hw.et.tx_intr_nsegs
140 to achieve TX interrupt moderation.
141 The default value is 1000000000 (nanoseconds).
154 device driver first appeared in
160 driver was written by
162 .Aq sepherosa@gmail.com .