will be hardware-accelerated. Avoids copyin()/copyout() overhead and
spending exceessive tie inside the kernel.
Pullup after: 24 hours, or confirmation by Jason Thorpe that this is the
consensus tech-kern agreed upon last summer.
clients, and a pseudo-device for userspace access.
The attribute is named `opencrypto'. The pseudo-device is renamed to
"crypto", which has a dependency on "opencrypto". The sys/conf/majors
entry and pseudo-device attach entrypoint are updated to match the
new pseudo-device name.
Fast IPsec (sys/netipsec/files.ipsec) now lists a dependency on the
"opencrypto" attribute. Drivers for crypto accelerators (ubsec,
hifn775x) also pull in opencrypto, as providers of opencrypto transforms.
for using /dev/crypto for OpenSSL:
1. Add comments explaining crypto_devallowsoft, explaining the
OpenBSD-style three-way logic actully implemented in crypto_newsession().
2. Pass crypto_devallowsoft as the final argument to crypto_newsession(),
instead of a constant 0 value.
3. Set the default value of crypto_devallowsoft to 1, to allow
/dev/crypto access only for hardware-supported transforms.
Items 1-3 may be revised to match the FreeBSD two-way logic, if the
consensus is that there's no point to forcing software transforms.
But as a first step, let the description match what the code actually does.
GC unused variables usercrypto, userasmcrypto, cryptodevallowsoft from
cryptodev.c, in favour of variables crypto_usercrypto, crypto_userasmcrypto,
crypto_devallowsoft, which are used as well as defined in crypto.c.
compiler will emit code to first copy it onto the stack before
copying it into the destination context structure. With this change,
it will only be copied once.
the old one. Rename the functions/structures from cast_* to cast128_*.
Adapt the KAME IPsec to use the new CAST-128 code, which has a simpler
API and smaller footprint.
Sam Leffler's FreeBSD commit message was
``to eliminate context switch when returning results from the
software crypto driver''
but the patch also contains the CRYPTO_SESID*() macros used in newer
ubsec and hifn drivers.
pseudo-device to init_main(), so the framework is ready for
registration requests at autoconfiguration time.
Thanks to Quentin Garnier for confirming the change was required, and
for testing a similar fix.
a feature-test and if present, initialize the crypto framework before
configuring hardware devices, so the crypto framework is ready to accept
attachment requests when crypto hardware are auto-configured and
try to register themselves with the framework.
Thanks to Quentin Garnier who, given a heads-up about the problem,
tested the same basic fix with a hardware device.
code is derived from Sam Leffler's FreeBSD port of OCF, which is in
turn a port of Angelos Keromytis's OpenBSD work.
Credit to Sam and Angelos, any blame for the NetBSD port to me.
