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| Filename | Latest commit message | Latest commit date |
|---|---|---|
8f3f6500c7
Paolo Abeni says: ==================== TC: refactor act_mirred packets re-injection This series is aimed at improving the act_mirred redirect performances. Such action is used by OVS to represent TC S/W flows, and it's current largest bottle-neck is the need for a skb_clone() for each packet. The first 2 patches introduce some cleanup and safeguards to allow extending tca_result - we will use it to store RCU protected redirect information - and introduce a clear separation between user-space accessible tcfa_action values and internal values accessible only by the kernel. Then a new tcfa_action value is introduced: TC_ACT_REINJECT, similar to TC_ACT_REDIRECT, but preserving the mirred semantic. Such value is not accessible from user-space. The last patch exploits the newly introduced infrastructure in the act_mirred action, to avoid a skb_clone, when possible. Overall this the above gives a ~10% performance improvement in forwarding tput, when using the TC S/W datapath. v1 -> v2: - preserve the rcu lock in act_bpf - add and use a new action value to reinject the packets, preserving the mirred semantic v2 -> v3: - renamed to new action as TC_ACT_REINJECT - TC_ACT_REINJECT is not exposed to user-space v3 -> v4: - dropped the TC_ACT_REDIRECT patch - report failure via extack, too - rename the new action as TC_ACT_REINSERT - skip clone only if the control action don't touch tcf_result v4 -> v5: - fix a couple of build issue reported by kbuild bot - dont split messages ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.
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.