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Link IRQs to NAPI instances with netif_napi_set_irq. This information
can be queried with the netdev-genl API. Note that the ENA device
appears to allocate an IRQ for management purposes which does not have a
NAPI associated with it; this commit takes this into consideration to
accurately construct a map between IRQs and NAPI instances.
Compare the output of /proc/interrupts for my ena device with the output of
netdev-genl after applying this patch:
$ cat /proc/interrupts | grep enp55s0 | cut -f1 --delimiter=':'
94
95
96
97
98
99
100
101
$ ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/netdev.yaml \
--dump napi-get --json='{"ifindex": 2}'
[{'id': 8208, 'ifindex': 2, 'irq': 101},
{'id': 8207, 'ifindex': 2, 'irq': 100},
{'id': 8206, 'ifindex': 2, 'irq': 99},
{'id': 8205, 'ifindex': 2, 'irq': 98},
{'id': 8204, 'ifindex': 2, 'irq': 97},
{'id': 8203, 'ifindex': 2, 'irq': 96},
{'id': 8202, 'ifindex': 2, 'irq': 95},
{'id': 8201, 'ifindex': 2, 'irq': 94}]
Signed-off-by: Joe Damato <jdamato@fastly.com>
Reviewed-by: David Arinzon <darinzon@amazon.com>
Link: https://patch.msgid.link/20241002001331.65444-2-jdamato@fastly.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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 reStructuredText 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.