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| author | Paul Greenwalt <paul.greenwalt@intel.com> | 2024-08-20 17:26:16 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-03-07 18:25:32 +0100 |
| commit | dc44e67c6db3da5a09a0de7dffd0ccb0d5080cfd (patch) | |
| tree | 42a9c26eacbc6efa0dbd9348d7a93b96a1b16682 /drivers/misc | |
| parent | c417b1e4d8d07037a2b7e64d6f3a5d32285f30a1 (diff) | |
| download | linux-dc44e67c6db3da5a09a0de7dffd0ccb0d5080cfd.tar.gz linux-dc44e67c6db3da5a09a0de7dffd0ccb0d5080cfd.tar.bz2 linux-dc44e67c6db3da5a09a0de7dffd0ccb0d5080cfd.zip | |
ice: add E830 HW VF mailbox message limit support
[ Upstream commit 59f4d59b25aec39a015c0949f4ec235c7a839c44 ]
E830 adds hardware support to prevent the VF from overflowing the PF
mailbox with VIRTCHNL messages. E830 will use the hardware feature
(ICE_F_MBX_LIMIT) instead of the software solution ice_is_malicious_vf().
To prevent a VF from overflowing the PF, the PF sets the number of
messages per VF that can be in the PF's mailbox queue
(ICE_MBX_OVERFLOW_WATERMARK). When the PF processes a message from a VF,
the PF decrements the per VF message count using the E830_MBX_VF_DEC_TRIG
register.
Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Stable-dep-of: 79990cf5e7ad ("ice: Fix deinitializing VF in error path")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/misc')
0 files changed, 0 insertions, 0 deletions