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0f1ce02368
Add support for get/set of an optional backup key via TCP_FASTOPEN_KEY, in addition to the current 'primary' key. The primary key is used to encrypt and decrypt TFO cookies, while the backup is only used to decrypt TFO cookies. The backup key is used to maximize successful TFO connections when TFO keys are rotated. Currently, TCP_FASTOPEN_KEY allows a single 16-byte primary key to be set. This patch now allows a 32-byte value to be set, where the first 16 bytes are used as the primary key and the second 16 bytes are used for the backup key. Similarly, for getsockopt(), we can receive a 32-byte value as output if requested. If a 16-byte value is used to set the primary key via TCP_FASTOPEN_KEY, then any previously set backup key will be removed. Signed-off-by: Jason Baron <jbaron@akamai.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Acked-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.