diff options
Diffstat (limited to 'target/linux/generic/files/crypto/ocf/README')
| -rw-r--r-- | target/linux/generic/files/crypto/ocf/README | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/target/linux/generic/files/crypto/ocf/README b/target/linux/generic/files/crypto/ocf/README deleted file mode 100644 index 88849ddc4..000000000 --- a/target/linux/generic/files/crypto/ocf/README +++ /dev/null @@ -1,246 +0,0 @@ -########################### -README - ocf-linux-20100530 -########################### - -This README provides instructions for getting ocf-linux compiled and -operating in a generic linux environment. Other information on the project -can be found at the home page: - - http://ocf-linux.sourceforge.net/ - -Embedded systems and applications requiring userspace acceleration will need -to patch the kernel source to get full OCF support. See "Adding OCF to -linux source" below. Otherwise the "OCF Quickstart" that follows is the -easiest way to get started. - -If your goal is to accelerate Openswan on Ubuntu or CentOS, you may find -that the required binaries are already available on openswan.org: - - ftp://ftp.openswan.org/ocf/ - ftp://ftp.openswan.org/openswan/binaries/ubuntu/ - -##################################################### -OCF Quickstart for Ubuntu/Others (including Openswan) -##################################################### - -This section provides instructions on how to quickly add kernel only support -for OCF to a GNU/Linux system. It is only suitable for in-kernel use such as -Openswan MAST/KLIPS. - -If the target is an embedded system, or, userspace acceleration of -applications such as OpenVPN and OpenSSL, the section below titled -"Adding OCF to linux source" is more appropriate. - -Before building kernel only support for OCF ensure that the appropriate -linux-headers package is installed: - - cd ocf - make ocf_modules - sudo make ocf_install - OCF_DIR=`pwd` # remember where OCF sources were built - -At this point the ocf, cryptosoft, ocfnull, hifn7751 and ocf-bench modules -should have been built and installed. The OCF installation can be tested -with the following commands: - - modprobe ocf - modprobe cryptosoft - modprobe ocf-bench - dmesg | tail -5 - -The final modprobe of ocf-bench will fail, this is intentional as ocf-bench -is a short lived module that tests in-kernel performance of OCF. If -everything worked correctly the "dmesg | tail -5" should include a line -like: - - [ 583.128741] OCF: 45133 requests of 1488 bytes in 251 jiffies (535.122 Mbps) - -This shows the in-kernel performance of OCF using the cryptosoft driver. -For addition driver load options, see "How to load the OCF modules" below. - -If the intention is to run an OCF accelerated Openswan (KLIPS/MAST) then use -these steps to compile openswan downloaded from openswan.org (2.6.34 or later). - - tar xf openswan-2.6.34.tar.gz - cd openswan-2.6.34 - make programs - make KERNELSRC=/lib/modules/`uname -r`/build \ - KBUILD_EXTRA_SYMBOLS=$OCF_DIR/Module.symvers \ - MODULE_DEF_INCLUDE=`pwd`/packaging/ocf/config-all.hmodules \ - MODULE_DEFCONFIG=`pwd`/packaging/ocf/defconfig \ - module - sudo make KERNELSRC=/lib/modules/`uname -r`/build \ - KBUILD_EXTRA_SYMBOLS=$OCF_DIR/Module.symvers \ - MODULE_DEF_INCLUDE=`pwd`/packaging/ocf/config-all.hmodules \ - MODULE_DEFCONFIG=`pwd`/packaging/ocf/defconfig \ - install minstall - -The rest of this document is only required for more complex build -requirements. - -########################## -Adding OCF to linux source -########################## - -It is recommended that OCF be built as modules as it increases the -flexibility and ease of debugging the system. - -Ensure that the system has /dev/crypto for userspace access to OCF: - - mknod /dev/crypto c 10 70 - -Generate the kernel patches and apply the appropriate one. - - cd ocf - make patch - -This will provide three files: - - linux-2.4.*-ocf.patch - linux-2.6.*-ocf.patch - ocf-linux-base.patch - -If either of the first two patches applies to the targets kernel, then one -of the following as required: - - cd linux-2.X.Y; patch -p1 < linux-2.4.*-ocf.patch - cd linux-2.6.Y; patch -p1 < linux-2.6.*-ocf.patch - -Otherwise, locate the appropriate kernel patch in the patches directory and -apply that as well as the ocf-linux-base.patch using '-p1'. - -When using a linux-2.4 system on a non-x86 platform, the following may be -required to build cryptosoft: - - cp linux-2.X.x/include/asm-i386/kmap_types.h linux-2.X.x/include/asm-YYY - -When using cryptosoft, for simplicity, enable all the crypto support in the -kernel except for the test driver. Likewise for the OCF options. Do not -enable OCF crypto drivers for HW that is not present (for example the ixp4xx -driver will not compile on non-Xscale systems). - -Make sure that cryptodev.h from the ocf directory is installed as -crypto/cryptodev.h in an include directory that is used for building -applications for the target platform. For example on a host system that -might be: - - /usr/include/crypto/cryptodev.h - -Patch the openssl-0.9.8r code the openssl-0.9.8r.patch from the patches -directory. There are many older patch versions in the patches directory -if required. - -The openssl patches provide the following functionality: - - * enables --with-cryptodev for non BSD systems - * adds -cpu option to openssl speed for calculating CPU load under linux - * fixes null pointer in openssl speed multi thread output. - * fixes test keys to work with linux crypto's more stringent key checking. - * adds MD5/SHA acceleration (Ronen Shitrit), only enabled with the - --with-cryptodev-digests option - * fixes bug in engine code caching. - -Build the crypto-tools directory for the target to obtain a userspace -testing tool call cryptotest. - -########################### -How to load the OCF modules -########################### - -First insert the base modules (cryptodev is optional, it is only used -for userspace acceleration): - - modprobe ocf - modprobe cryptodev - -Load the software OCF driver with: - - modprobe cryptosoft - -and zero or more of the OCF HW drivers with: - - modprobe safe - modprobe hifn7751 - modprobe ixp4xx - ... - -All the drivers take a debug option to enable verbose debug so that -OCF operation may be observed via "dmesg" or the console. For debug -load the modules as: - - modprobe ocf crypto_debug=1 - modprobe cryptodev cryptodev_debug=1 - modprobe cryptosoft swcr_debug=1 - -More than one OCF crypto driver may be loaded but then there is no -guarantee as to which will be used (other than a preference for HW -drivers over SW drivers by most applications). - -It is also possible to enable debug at run time on linux-2.6 systems -with the following: - - echo 1 > /sys/module/ocf/parameters/crypto_debug - echo 1 > /sys/module/cryptodev/parameters/cryptodev_debug - echo 1 > /sys/module/cryptosoft/parameters/swcr_debug - echo 1 > /sys/module/hifn7751/parameters/hifn_debug - echo 1 > /sys/module/safe/parameters/safe_debug - echo 1 > /sys/module/ixp4xx/parameters/ixp_debug - ... - -The ocf-bench driver accepts the following parameters: - - request_q_len - Maximum number of outstanding requests to OCF - request_num - run for at least this many requests - request_size - size of each request (multiple of 16 bytes recommended) - request_batch - enable OCF request batching - request_cbimm - enable OCF immediate callback on completion - -For example: - - modprobe ocf-bench request_size=1024 request_cbimm=0 - -####################### -Testing the OCF support -####################### - -run "cryptotest", it should do a short test for a couple of -des packets. If it does everything is working. - -If this works, then ssh will use the driver when invoked as: - - ssh -c 3des username@host - -to see for sure that it is operating, enable debug as defined above. - -To get a better idea of performance run: - - cryptotest 100 4096 - -There are more options to cryptotest, see the help. - -It is also possible to use openssl to test the speed of the crypto -drivers. - - openssl speed -evp des -engine cryptodev -elapsed - openssl speed -evp des3 -engine cryptodev -elapsed - openssl speed -evp aes128 -engine cryptodev -elapsed - -and multiple threads (10) with: - - openssl speed -evp des -engine cryptodev -elapsed -multi 10 - openssl speed -evp des3 -engine cryptodev -elapsed -multi 10 - openssl speed -evp aes128 -engine cryptodev -elapsed -multi 10 - -for public key testing you can try: - - cryptokeytest - openssl speed -engine cryptodev rsa -elapsed - openssl speed -engine cryptodev dsa -elapsed - - -############################# -# -# David McCullough -# david_mccullough@mcafee.com -# -############################# |