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This patch tries to avoid skb_cow_data on esp4. On the encrypt side we add the IPsec tailbits to the linear part of the buffer if there is space on it. If there is no space on the linear part, we add a page fragment with the tailbits to the buffer and use separate src and dst scatterlists. On the decrypt side, we leave the buffer as it is if it is not cloned. With this, we can avoid a linearization of the buffer in most of the cases. Joint work with: Sowmini Varadhan <sowmini.varadhan@oracle.com> Ilan Tayari <ilant@mellanox.com> Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> |
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.