From: Liang-min Wang <[email protected]> In cases when VF sends malformed packets that are classified as malicious, sometimes it causes Tx queue to freeze. This frozen queue can be stuck for several minutes being unusable.
When MDD event occurs, perform graceful VF reset to quickly bring VF back to operational state. Signed-off-by: Liang-min Wang <[email protected]> Signed-off-by: Pawel Chmielewski <[email protected]> Reviewed-by: Michal Swiatkowski <[email protected]> --- drivers/net/ethernet/intel/ice/ice_main.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index 66095e9b094e..cf9fd1f168f7 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -1836,8 +1836,13 @@ static void ice_handle_mdd_event(struct ice_pf *pf) vf->mdd_tx_events.count++; set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state); if (netif_msg_tx_err(pf)) - dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on VF %d\n", + dev_info(dev, + "Malicious Driver Detection event TX_TCLAN detected on VF %d\n", vf->vf_id); + dev_info(dev, + "PF-to-VF reset on VF %d due to Tx MDD TX_TCLAN event\n", + vf->vf_id); + ice_reset_vf(vf, ICE_VF_RESET_NOTIFY); } reg = rd32(hw, VP_MDET_TX_TDPU(vf->vf_id)); @@ -1846,8 +1851,13 @@ static void ice_handle_mdd_event(struct ice_pf *pf) vf->mdd_tx_events.count++; set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state); if (netif_msg_tx_err(pf)) - dev_info(dev, "Malicious Driver Detection event TX_TDPU detected on VF %d\n", + dev_info(dev, + "Malicious Driver Detection event TX_TDPU detected on VF %d\n", vf->vf_id); + dev_info(dev, + "PF-to-VF reset on VF %d due to Tx MDD TX_TCLAN event\n", + vf->vf_id); + ice_reset_vf(vf, ICE_VF_RESET_NOTIFY); } reg = rd32(hw, VP_MDET_RX(vf->vf_id)); -- 2.37.3 _______________________________________________ Intel-wired-lan mailing list [email protected] https://lists.osuosl.org/mailman/listinfo/intel-wired-lan
