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24bc41b455
The driver used to pass received CAN frames/skbs to the network stack with netif_rx(). In netif_rx() the skbs are queued to the local CPU. If IRQs are handled in round robin, OoO packets may occur. To avoid out-of-order reception convert the driver from netif_rx() to NAPI. For USB devices with timestamping support use the rx-offload helper can_rx_offload_queue_timestamp() for the RX, and can_rx_offload_get_echo_skb_queue_timestamp() for the TX path. Devices without timestamping support use can_rx_offload_queue_tail() for RX, and can_rx_offload_get_echo_skb_queue_tail() for the TX path. Link: https://lore.kernel.org/all/559D628C.5020100@hartkopp.net Link: https://github.com/candle-usb/candleLight_fw/issues/166 Link: https://lore.kernel.org/all/20230718-gs_usb-rx-offload-v2-3-716e542d14d5@pengutronix.de Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> |
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| block | ||
| certs | ||
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| init | ||
| io_uring | ||
| ipc | ||
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| .clang-format | ||
| .cocciconfig | ||
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| README | ||
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.