DIGITAL 21140-AC DRIVER

The typical operating mode is matching the incoming destination address against a list of 16 addresses. With more than 14 multicast addresses the chip matches against a single unicast address and uses a statistical multicast filter with bins, resulting in much better filtering than the 64 bin chips. Loading the driver module An example of loading the Tulip module is insmod tulip. Announcements are also made on the driver-announce mailing list. The Tulip does much better than this. Donald Becker , becker scyld.

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You may install just one driver see below if you are using a Linux 2. Recent cards use the similar PNIC chip, which requires a v0. 221140-ac

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Scyld provides support and development servies for Linux and Beowulf clusters. Please send the output from this program with any bug reports. Usage instructions Installation The driver installation directions are on the Driver Updates page. This is typically done by taking the CRC intermediate result just after destination address arrives, and using a few bits as the index into a table of which multicast packets are digiral. The master copy of this page resides on the Scyld web server.

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The 21140-aac programs are described at http: Most distributions based on the 2. Diagnostic program A Tulip diagnostic program is available to show the current state of the hardware, configure the EEPROM, and help debug media selection and board-setup problems.

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The Tulip does much better than this. When updating a single driver you will need to build pci-scan.

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The result is that the driver will report “No EEPROM present” for the first three interfaces, difital will back-fill the configuration information when the fourth interface is found. Since then many network adapters have used the same interface design. Early versions used National transcievers, but later versions are depopulated ZX boards.

See also the Tulip driver development page. Many cards support multiple media types with a single MII transceiver, and must always be set to an MII type preferably 11, but other values force a specific setting. See driver source for tuning details.

This list is being phased out to reduce the spam moderation load, please use the ‘tulip’ list instead. Do not bother sending email to zinc. Using the 10base2 or AUI Port The new driver automatically switches media types attempting to find a valid selection.

If no internal table is found, the driver configures the chip to use an MII transceiver. This driver has been integrated with 2114-ac kernel source tree since 1.

The typical chip has 64 bins and uses six bits of CRC. Your card will only have one of these types, and you must known which type to force a setting. Options for Modules When loaded as a module the following variables may be set: The typical operating mode is matching the incoming destination digiital against a list of 16 addresses.

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Donald Becker See the drivers for the contact email address. With more than 14 multicast addresses the chip matches against a single unicast address and uses a statistical multicast filter with bins, resulting in much better filtering than the 64 bin chips.

The default is usually autosense, but this may be overridden by changing the configuration EEPROM or by passing a driver option. Donald Beckerbecker scyld. The media types are: Tulip Multicast Support Most Ethernet chips can match a single unicast address — their own station address — and support a statistical aka hash filter for initial filtering of unwanted multicast packets.

This driver works with almost all of them: After reserving two entries for the broadcast and station address, that means up to 14 multicast addresses may be perfectly filtered.