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| author |   Björn Töpel <bjorn.topel@intel.com> | 2018-09-07 10:18:48 +0200 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-09-25 13:16:19 -0700 |
| commit | 3ab52af58fa481324bb7c839a2187c54c4af912b (patch) | |
| tree | 23c7f5927c27ba3bbaabc241bf9b2ddd4d546a17 /drivers/amba | |
| parent | i40e: clean zero-copy XDP Rx ring on shutdown/reset (diff) | |
| download | linux-dev-3ab52af58fa481324bb7c839a2187c54c4af912b.tar.xz linux-dev-3ab52af58fa481324bb7c839a2187c54c4af912b.zip | |
i40e: disallow changing the number of descriptors when AF_XDP is on
When an AF_XDP UMEM is attached to any of the Rx rings, we disallow a
user to change the number of descriptors via e.g. "ethtool -G IFNAME".
Otherwise, the size of the stash/reuse queue can grow unbounded, which
would result in OOM or leaking userspace buffers.
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/amba')
0 files changed, 0 insertions, 0 deletions