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The 32-bit node number, aka node hash or node address, is calculated based on the 128-bit node identity when it is not set explicitly by the user. In future commits we will need to perform this hash operation on peer nodes while feeling safe that we obtain the same result. We do this by interpreting the initial hash as a network byte order number. Whenever we need to use the number locally on a node we must therefore translate it to host byte order to obtain an architecure independent result. Furthermore, given the context where we use this number, we must not allow it to be zero unless the node identity also is zero. Hence, in the rare cases when the xor-ed hash value may end up as zero we replace it with a fix number, knowing that the code anyway is capable of handling hash collisions. Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jmaloy@redhat.com> Signed-off-by: Jakub Kicinski <kuba@kernel.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.