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a9e60cf0b4
This patch adds multi-port support to TI AM65x CPSW driver xmit/rx path in preparation for adding support for multi-port devices, like Main CPSW0 on K3 J721E SoC or future CPSW3g on K3 AM64x SoC. Hence DMA channels are common/shared for all ext Ports and the RX/TX NAPI and DMA processing going to be assigned to first available netdev this patch: - ensures all RX descriptors fields are initialized; - adds synchronization for TX DMA push/pop operation (locking) as Networking core locks are not enough any more; - updates TX bql processing for every packet in am65_cpsw_nuss_tx_compl_packets() as every completed TX skb can have different ndev assigned (come from different netdevs). To avoid performance issues for existing one-port CPSW2g devices the above changes are done only for multi-port devices by splitting xmit path for one-port and multi-port devices. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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crypto | ||
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drivers | ||
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kernel | ||
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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.