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Field FL/TPL in register TDES3 is not correctly set on GMAC4. TX appears to be functional on GMAC 4.10a even if this field is not set, however, to avoid relying on undefined behavior, set the length in TDES3. The field has a different meaning depending on if the TSE bit in TDES3 is set or not (TSO). However, regardless of the TSE bit, the field is not optional. The field is already set correctly when the TSE bit is set. Since there is no limit for the number of descriptors that can be used for a single packet, the field should be set to the sum of the buffers contained in: [<desc with First Descriptor bit set> ... <desc n> ... <desc with Last Descriptor bit set>], which should be equal to skb->len. Signed-off-by: Niklas Cassel <niklas.cassel@axis.com> Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.