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     hfa — FORE Systems 200-Series ATM adapter driver


     device hfa


     The hfa driver provides support for the FORE Systems ATM series 200 adapters.  This driver
     will support up to eight devices in a system at any given time.  The hfa driver follows the
     AALI or FORE ATM Adaptation Layer Interface and as such will adhere to its specifications.
     The supported AALs include:

     ·   FORE AAL 0: The cell service;

     ·   FORE AAL 4: Version three and four of AAL;

     ·   FORE AAL 5: Version five of AAL.

     The hfa driver supports traffic shaping for cards with firmware revisions of 4.X.X, see
     fore_dnld(8).  The following sysctls are recognized by the driver and may be used to enable
     or disable traffic shaping:

     hw.atm.hfaN.shape (0)
             Disable shaping on card number N.

     hw.atm.hfaN.shape (1)
             Set one VCI to be traffic shaped on device N.  This will shape the first CBR VCI
             which is opened.

     hw.atm.hfaN.shape (2)
             Attempt to shape all VCIs on device N.
     The firmware should be loaded before using this driver, this can be an easy task if the
     fore_dnld(8) utility is used.  If the /etc/rc.d/atm1 file has been properly configured then
     the firmware update should be automatic.


     The hfa driver supports the following adapters:

     ·   FORE Systems PCA-200E ATM
     ·   FORE Systems 200S
     ·   FORE Systems 200


     fore_cmd_drain: %s%d: GET_PROM failed  The driver failed to drain the PROM buffer.

     fore initialization failed: intf=%s%d  Initialization of the card has failed.

     fore initialization timed out: intf=%s%d  Initialization of the card has timed out.

     hfa: version mismatch: fore=%d.%d kernel=%d.%d  A version mismatch error has occurred.


     fatm(4), harp(4), ng_atm(4), atm(8), fore_dnld(8)


     The hfa driver was written by Network Computing Services, Inc. and added to FreeBSD 3.0 by
     Poul-Henning Kamp <>.  This manual page first appeared in FreeBSD 5.3.


     This manual page was written by Tom Rhodes <>.