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When RX/TX checksum offloading is turned on and the adapter is an OSA 3 card in layer 3 mode, the checksum offloading is only performed when both peers use different adapters. If both peers share an OSA 3 card, communication is a memory copy and checksum offloading is not performed. This patch adds a warning to inform the administrator. OSA 3 in layer 2 mode does not offer the RX/TX checksum offload feature. Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Reviewed-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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.