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16f2bccda7
Adds support for XDP_TX i.e transmits packet out of the XDP TX queue mapped to the corresponding Rx queue on which packet is received. Since SQ for XDP TX will be used only on a single cpu i.e SQ description creation and freeing, using atomic free count is not necessary and will become a bottleneck. Hence added a separate 'xdp_free_cnt' used for SQs designated for XDP to track descriptor free count. Changes also include - A new entry 'xdp_page' is added to save transmitted packet's page pointer for later cleanup. - XDP Tx SQ's doorbell is ringed once per NAPI instance. - Retrieving designated SQ for packets being sent out by stack via 'nicvf_xmit'. Signed-off-by: Sunil Goutham <sgoutham@cavium.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.