247ad1305a
Mellanox user space drivers don't deal with physical addresses as part of a memory protection mechanism. The device translates the given virtual address to a physical address using the given memory key as an address space identifier. That's why any mbuf virtual address is moved directly to the HW descriptor(WQE). The mapping between the virtual address to the physical address is saved in MR configured by the kernel to the HW. Each MR has a key that should also be moved to the WQE by the SW. When the SW sees an unmapped address, it extends the address range and creates a MR using a system call. Add memory region cache management: - 2 level cache per queue-pair - no locks. - 1 shared cache between all the queues using a lock. Using this way, the MR key search per data-path address is optimized. Signed-off-by: Shiri Kuzin <shirik@nvidia.com> Signed-off-by: Michael Baum <michaelba@nvidia.com> Acked-by: Matan Azrad <matan@nvidia.com> Acked-by: Akhil Goyal <gakhil@marvell.com> |
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| .ci | ||
| .github/workflows | ||
| app | ||
| buildtools | ||
| config | ||
| devtools | ||
| doc | ||
| drivers | ||
| examples | ||
| kernel | ||
| lib | ||
| license | ||
| usertools | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .travis.yml | ||
| ABI_VERSION | ||
| MAINTAINERS | ||
| Makefile | ||
| meson_options.txt | ||
| meson.build | ||
| README | ||
| VERSION | ||
DPDK is a set of libraries and drivers for fast packet processing. It supports many processor architectures and both FreeBSD and Linux. The DPDK uses the Open Source BSD-3-Clause license for the core libraries and drivers. The kernel components are GPL-2.0 licensed. Please check the doc directory for release notes, API documentation, and sample application information. For questions and usage discussions, subscribe to: users@dpdk.org Report bugs and issues to the development mailing list: dev@dpdk.org