Copyright (c) 2000 Theo de Raadt
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$FreeBSD: releng/10.2/share/man/man4/hifn.4 208027 2010-05-13 12:07:55Z uqs $
.Dd October 19, 2009 .Dt HIFN 4 .Os .Sh NAME .Nm hifn .Nd Hifn 7751/7951/7811/7955/7956 crypto accelerator .Sh SYNOPSIS To compile this driver into the kernel, place the following lines in your kernel configuration file: d -ragged -offset indent .Cd "device crypto" .Cd "device cryptodev" .Cd "device hifn" .Ed
p Alternatively, to load the driver as a module at boot time, place the following line in .Xr loader.conf 5 : d -literal -offset indent hifn_load="YES" .Ed .Sh DESCRIPTION The .Nm driver supports various cards containing the Hifn 7751, 7951, 7811, 7955, and 7956 chipsets.
p The .Nm driver registers itself to accelerate DES, Triple-DES, AES (7955 and 7956 only), ARC4, MD5, MD5-HMAC, SHA1, and SHA1-HMAC operations for .Xr ipsec 4 and .Xr crypto 4 .
p The Hifn .Tn 7951 , .Tn 7811 , .Tn 7955 , and .Tn 7956 will also supply data to the kernel .Xr random 4 subsystem. .Sh HARDWARE The .Nm driver supports various cards containing the Hifn 7751, 7951, 7811, 7955, and 7956 chipsets, such as: l -tag -width namenamenamena -offset indent t Invertex AEON No longer being made. Came as 128KB SRAM model, or 2MB DRAM model. t Hifn 7751 Reference board with 512KB SRAM. t PowerCrypt Comes with 512KB SRAM. t XL-Crypt Only board based on 7811 (which is faster than 7751 and has a random number generator). t NetSec 7751 Supports the most IPsec sessions, with 1MB SRAM. t Soekris Engineering vpn1201 and vpn1211 See
a http://www.soekris.com/ . Contains a 7951 and supports symmetric and random number operations. t Soekris Engineering vpn1401 and vpn1411 See
a http://www.soekris.com/ . Contains a 7955 and supports symmetric and random number operations. .El .Sh SEE ALSO .Xr crypt 3 , .Xr crypto 4 , .Xr intro 4 , .Xr ipsec 4 , .Xr random 4 , .Xr crypto 9 .Sh HISTORY The .Nm device driver appeared in .Ox 2.7 . The .Nm device driver was imported to .Fx 5.0 . .Sh CAVEATS The Hifn 9751 shares the same PCI ID. This chip is basically a 7751, but with the cryptographic functions missing. Instead, the 9751 is only capable of doing compression. Since we do not currently attempt to use any of these chips to do compression, the 9751-based cards are not useful.
p Support for the 7955 and 7956 is incomplete; the asymmetric crypto facilities are to be added and the performance is suboptimal. .Sh BUGS The 7751 chip starts out at initialization by only supporting compression. A proprietary algorithm, which has been reverse engineered, is required to unlock the cryptographic functionality of the chip. It is possible for vendors to make boards which have a lock ID not known to the driver, but all vendors currently just use the obvious ID which is 13 bytes of 0.