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The elxl driver currently
supports the following network cards: EtherLink XL (3C900-TPO, 3C900-COMBO,
3C900B-TPO, 3C900B-COMBO, and 3C900B-TPC), EtherLink XL 10/100 (3C905-TX Fast,
3C905-T4 Fast, 3C905B-TX Fast, 3C905B-T4 Fast, and 3C905C-TX-M Fast), and
EtherLink Server 10/100 (3C980-TX Fast and 3C980C-TXM).
The elxl Ethernet driver is a multi-threaded, loadable,
clonable, STREAMS hardware driver supporting the connectionless Data Link
Provider Interface, dlpi(7P).
Multiple EtherLink XL controllers installed within the system are supported
by the driver. The elxl driver provides basic support for
the EtherLink hardware. Functions include chip initialization, frame transmit
and receive, multicast and promiscuous mode support, and error recovery and
reporting.
The cloning, character-special device /dev/elxl
is used to access all EtherLink devices installed within the system.
The elxl driver is dependent on /kernel/misc/gld, a loadable kernel module that provides the elxl
driver with the DLPI and STREAMS functionality required of a LAN driver. See gld(7D) for more details on the primatives supported
by the driver.
The values returned by the driver in the DL_INFO_ACK
primitive in response to the DL_INFO_REQ from the user
are as follows:
- Maximum SDU is 1500 (ETHERMTU).
- Minimum SDU is 0. The driver will pad to
the mandatory 60-octet minimum packet size.
- The dlsap address length is 8.
- MAC type is DL_ETHER.
- The sap length value is -2, meaning
the physical address component is followed immediately by a 2-byte sap component within the DLSAP address.
- The broadcast address value is Ethernet/IEEE broadcast address
(FF:FF:FF:FF:FF:FF).
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