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This patch adds new infrastructure to skip redundant selector store operations on the same register to achieve a performance boost from the packet path. This is particularly noticeable in pure linear rulesets but it also helps in rulesets which are already heaving relying in maps to avoid ruleset linear inspection. The idea is to keep data of the most recurrent store operations on register to reuse them with cmp and lookup expressions. This infrastructure allows for dynamic ruleset updates since the ruleset blob reduction happens from the kernel. Userspace still needs to be updated to maximize register utilization to cooperate to improve register data reuse / reduce number of store on register operations. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> |
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arch | ||
block | ||
certs | ||
crypto | ||
Documentation | ||
drivers | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
LICENSES | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.clang-format | ||
.cocciconfig | ||
.get_maintainer.ignore | ||
.gitattributes | ||
.gitignore | ||
.mailmap | ||
COPYING | ||
CREDITS | ||
Kbuild | ||
Kconfig | ||
MAINTAINERS | ||
Makefile | ||
README |
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.