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Maciej Fijalkowski
6c7273a266
Commitc685c69fba("ixgbe: don't do any AF_XDP zero-copy transmit if netif is not OK") addressed the ring transient state when MEM_TYPE_XSK_BUFF_POOL was being configured which in turn caused the interface to through down/up. Maurice reported that when carrier is not ok and xsk_pool is present on ring pair, ksoftirqd will consume 100% CPU cycles due to the constant NAPI rescheduling as ixgbe_poll() states that there is still some work to be done. To fix this, do not set work_done to false for a !netif_carrier_ok(). Fixes:c685c69fba("ixgbe: don't do any AF_XDP zero-copy transmit if netif is not OK") Reported-by: Maurice Baijens <[email protected]> Tested-by: Maurice Baijens <[email protected]> Signed-off-by: Maciej Fijalkowski <[email protected]> Tested-by: Sandeep Penigalapati <[email protected]> Signed-off-by: Tony Nguyen <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
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.
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.