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761c2a48c7
Commit: fed21bcee7a5
("ixgbe: Don't bother clearing buffer memory for descriptor rings)
exposed some issues with the logic in the current implementation of
ixgbe_clean_test_rings() that are being addressed in this patch:
- Split the clearing of the Tx and Rx rings in separate loops. Previously
both Tx and Rx rings were cleared in a rx_desc->wb.upper.length based
loop which could lead to issues if for w/e reason packets were received
outside of the frames transmitted for the loopback test.
- Add check for IXGBE_TXD_STAT_DD to avoid clearing the rings if the
transmits have not comlpeted by the time we enter ixgbe_clean_test_rings()
- Exit early on ixgbe_check_lbtest_frame() failure.
This change fixes a crash during ethtool diagnostic (ethtool -t).
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.