f8deaea06f
Ido Schimmel says: ==================== mlxsw: Add support for buffer drop traps Petr says: A recent patch set added the ability to mirror buffer related drops (e.g., early drops) through a netdev. This patch set adds the ability to trap such packets to the local CPU for analysis. The trapping towards the CPU is configured by using tc-trap action instead of tc-mirred as was done when the packets were mirrored through a netdev. A future patch set will also add the ability to sample the dropped packets using tc-sample action. The buffer related drop traps are added to devlink, which means that the dropped packets can be reported to user space via the kernel's drop_monitor module. Patch set overview: Patch #1 adds the early_drop trap to devlink Patch #2 adds extack to a few devlink operations to facilitate better error reporting to user space. This is necessary - among other things - because the action of buffer drop traps cannot be changed in mlxsw Patch #3 performs a small refactoring in mlxsw, patch #4 fixes a bug that this patchset would trigger. Patches #5-#6 add the infrastructure required to support different traps / trap groups in mlxsw per-ASIC. This is required because buffer drop traps are not supported by Spectrum-1 Patch #7 extends mlxsw to register the early_drop trap Patch #8 adds the offload logic for the "trap" action at a qevent block. Patch #9 adds a mlxsw-specific selftest. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.