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| author | Paul Greenwalt <paul.greenwalt@intel.com> | 2024-08-20 17:26:16 -0400 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2024-10-08 14:37:15 -0700 |
| commit | 59f4d59b25aec39a015c0949f4ec235c7a839c44 (patch) | |
| tree | 2509bbbb752050eec414927bdde81b8c51c75e17 /drivers/net/ethernet/intel/ice/ice_lib.c | |
| parent | b699c81af0683ad5b7a7e2b3ef4ae3ff8ee41153 (diff) | |
| download | lwn-59f4d59b25aec39a015c0949f4ec235c7a839c44.tar.gz lwn-59f4d59b25aec39a015c0949f4ec235c7a839c44.zip | |
ice: add E830 HW VF mailbox message limit support
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>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_lib.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_lib.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c index 06e712cdc3d9..d4e74f96a8ad 100644 --- a/drivers/net/ethernet/intel/ice/ice_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_lib.c @@ -3880,6 +3880,9 @@ void ice_init_feature_support(struct ice_pf *pf) default: break; } + + if (pf->hw.mac_type == ICE_MAC_E830) + ice_set_feature_support(pf, ICE_F_MBX_LIMIT); } /** |