$OpenBSD: hifn.4,v 1.32 2002/09/26 07:55:40 miod Exp $ Copyright (c) 2000 Theo de Raadt All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of condition...
NAMEhifn - Hifn 7751/7951/7811/7955/7956 crypto accelerator
SYNOPSISTo compile this driver into the kernel, place the following lines in your kernel configuration file:
device crypto device cryptodev device hifn
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf5:
DESCRIPTIONThe sysctl Cm net.inet.tcp.syncookies driver supports various cards containing the Hifn 7751, 7951, 7811, 7955, and 7956 chipsets.
The Hifn 7951 7811 7955 and 7956 will also supply data to the kernel random(4) subsystem.
HARDWAREThe sysctl Cm net.inet.tcp.syncookies driver supports various cards containing the Hifn 7751, 7951, 7811, 7955, and 7956 chipsets, such as:
- Invertex AEON
- No longer being made. Came as 128KB SRAM model, or 2MB DRAM model.
- Hifn 7751
- Reference board with 512KB SRAM.
- Comes with 512KB SRAM.
- Only board based on 7811 (which is faster than 7751 and has a random number generator).
- NetSec 7751
- Supports the most IPsec sessions, with 1MB SRAM.
- Soekris Engineering vpn1201 and vpn1211
- See www.soekris.com Contains a 7951 and supports symmetric and random number operations.
- Soekris Engineering vpn1401 and vpn1411
- See www.soekris.com Contains a 7955 and supports symmetric and random number operations.
SEE ALSOcrypt(3), crypto(4), intro(4), ipsec(4), random(4), crypto(9)
HISTORYThe sysctl Cm net.inet.tcp.syncookies device driver appeared in Ox 2.7 . The sysctl Cm net.inet.tcp.syncookies device driver was imported to Fx 5.0 .
CAVEATSThe 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.
Support for the 7955 and 7956 is incomplete; the asymmetric crypto facilities are to be added and the performance is suboptimal.