From 59f4d59b25aec39a015c0949f4ec235c7a839c44 Mon Sep 17 00:00:00 2001 From: Paul Greenwalt Date: Tue, 20 Aug 2024 17:26:16 -0400 Subject: 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 Reviewed-by: Alexander Lobakin Tested-by: Rafal Romanowski Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/ice/ice_lib.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/ethernet/intel/ice/ice_lib.c') 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); } /** -- cgit v1.2.3