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| Filename | Latest commit message | Latest commit date |
|---|---|---|
4aac0b4347
octeon_mgmt driver doesn't drop RX frames that are 1-4 bytes bigger than MTU set for the corresponding interface. The problem is in the AGL_GMX_RX0/1_FRM_MAX register setting, which should not account for VLAN tagging. According to Octeon HW manual: "For tagged frames, MAX increases by four bytes for each VLAN found up to a maximum of two VLANs, or MAX + 8 bytes." OCTEON_FRAME_HEADER_LEN "define" is fine for ring buffer management, but should not be used for AGL_GMX_RX0/1_FRM_MAX. The problem could be easily reproduced using "ping" command. If affected system has default MTU 1500, other host (having MTU >= 1504) can successfully "ping" the affected system with payload size 1473-1476, resulting in IP packets of size 1501-1504 accepted by the mgmt driver. Fixed system still accepts IP packets of 1500 bytes even with VLAN tagging, because the limits are lifted in HW as expected, for every VLAN tag. Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.