From aa4967d8529c8daea85303bcb546fc1b70c4d6ba Mon Sep 17 00:00:00 2001 From: Andrii Staikov Date: Tue, 12 Dec 2023 13:51:26 +0100 Subject: [PATCH] ice: Add support for packet mirroring using hardware in switchdev mode Switchdev mode allows to add mirroring rules to mirror incoming and outgoing packets to the interface's port representor. Previously, this was available only using software functionality. Add possibility to offload this functionality to the NIC hardware. Introduce ICE_MIRROR_PACKET filter action to the ice_sw_fwd_act_type enum to identify the desired action and pass it to the hardware as well as the VSI to mirror. Example of tc mirror command using hardware: tc filter add dev ens1f0np0 ingress protocol ip prio 1 flower src_mac b4:96:91:a5:c7:a7 skip_sw action mirred egress mirror dev eth1 ens1f0np0 - PF b4:96:91:a5:c7:a7 - source MAC address eth1 - PR of a VF to mirror to Co-developed-by: Marcin Szycik Signed-off-by: Marcin Szycik Reviewed-by: Wojciech Drewek Signed-off-by: Andrii Staikov Tested-by: Sujai Buvaneswaran Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/ice/ice_switch.c | 25 +++++++++---- drivers/net/ethernet/intel/ice/ice_tc_lib.c | 41 +++++++++++++++++++++ drivers/net/ethernet/intel/ice/ice_type.h | 1 + 3 files changed, 60 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c index dc5b34ca2d4ae..f84bab80ca423 100644 --- a/drivers/net/ethernet/intel/ice/ice_switch.c +++ b/drivers/net/ethernet/intel/ice/ice_switch.c @@ -6059,6 +6059,7 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups, rinfo->sw_act.fltr_act == ICE_FWD_TO_Q || rinfo->sw_act.fltr_act == ICE_FWD_TO_QGRP || rinfo->sw_act.fltr_act == ICE_DROP_PACKET || + rinfo->sw_act.fltr_act == ICE_MIRROR_PACKET || rinfo->sw_act.fltr_act == ICE_NOP)) { status = -EIO; goto free_pkt_profile; @@ -6071,9 +6072,11 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups, } if (rinfo->sw_act.fltr_act == ICE_FWD_TO_VSI || - rinfo->sw_act.fltr_act == ICE_NOP) + rinfo->sw_act.fltr_act == ICE_MIRROR_PACKET || + rinfo->sw_act.fltr_act == ICE_NOP) { rinfo->sw_act.fwd_id.hw_vsi_id = ice_get_hw_vsi_num(hw, vsi_handle); + } if (rinfo->src_vsi) rinfo->sw_act.src = ice_get_hw_vsi_num(hw, rinfo->src_vsi); @@ -6109,12 +6112,15 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups, status = -ENOMEM; goto free_pkt_profile; } - if (!rinfo->flags_info.act_valid) { - act |= ICE_SINGLE_ACT_LAN_ENABLE; - act |= ICE_SINGLE_ACT_LB_ENABLE; - } else { - act |= rinfo->flags_info.act & (ICE_SINGLE_ACT_LAN_ENABLE | - ICE_SINGLE_ACT_LB_ENABLE); + + if (rinfo->sw_act.fltr_act != ICE_MIRROR_PACKET) { + if (!rinfo->flags_info.act_valid) { + act |= ICE_SINGLE_ACT_LAN_ENABLE; + act |= ICE_SINGLE_ACT_LB_ENABLE; + } else { + act |= rinfo->flags_info.act & (ICE_SINGLE_ACT_LAN_ENABLE | + ICE_SINGLE_ACT_LB_ENABLE); + } } switch (rinfo->sw_act.fltr_act) { @@ -6140,6 +6146,11 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups, act |= ICE_SINGLE_ACT_VSI_FORWARDING | ICE_SINGLE_ACT_DROP | ICE_SINGLE_ACT_VALID_BIT; break; + case ICE_MIRROR_PACKET: + act |= ICE_SINGLE_ACT_OTHER_ACTS; + act |= FIELD_PREP(ICE_SINGLE_ACT_VSI_ID_M, + rinfo->sw_act.fwd_id.hw_vsi_id); + break; case ICE_NOP: act |= FIELD_PREP(ICE_SINGLE_ACT_VSI_ID_M, rinfo->sw_act.fwd_id.hw_vsi_id); diff --git a/drivers/net/ethernet/intel/ice/ice_tc_lib.c b/drivers/net/ethernet/intel/ice/ice_tc_lib.c index 08d3bbf4b44c4..b890410a2bc0b 100644 --- a/drivers/net/ethernet/intel/ice/ice_tc_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_tc_lib.c @@ -689,6 +689,41 @@ ice_tc_setup_drop_action(struct net_device *filter_dev, return 0; } +static int ice_tc_setup_mirror_action(struct net_device *filter_dev, + struct ice_tc_flower_fltr *fltr, + struct net_device *target_dev) +{ + struct ice_repr *repr; + + fltr->action.fltr_act = ICE_MIRROR_PACKET; + + if (ice_is_port_repr_netdev(filter_dev) && + ice_is_port_repr_netdev(target_dev)) { + repr = ice_netdev_to_repr(target_dev); + + fltr->dest_vsi = repr->src_vsi; + fltr->direction = ICE_ESWITCH_FLTR_EGRESS; + } else if (ice_is_port_repr_netdev(filter_dev) && + ice_tc_is_dev_uplink(target_dev)) { + repr = ice_netdev_to_repr(filter_dev); + + fltr->dest_vsi = repr->src_vsi->back->eswitch.uplink_vsi; + fltr->direction = ICE_ESWITCH_FLTR_EGRESS; + } else if (ice_tc_is_dev_uplink(filter_dev) && + ice_is_port_repr_netdev(target_dev)) { + repr = ice_netdev_to_repr(target_dev); + + fltr->dest_vsi = repr->src_vsi; + fltr->direction = ICE_ESWITCH_FLTR_INGRESS; + } else { + NL_SET_ERR_MSG_MOD(fltr->extack, + "Unsupported netdevice in switchdev mode"); + return -EINVAL; + } + + return 0; +} + static int ice_eswitch_tc_parse_action(struct net_device *filter_dev, struct ice_tc_flower_fltr *fltr, struct flow_action_entry *act) @@ -710,6 +745,12 @@ static int ice_eswitch_tc_parse_action(struct net_device *filter_dev, break; + case FLOW_ACTION_MIRRED: + err = ice_tc_setup_mirror_action(filter_dev, fltr, act->dev); + if (err) + return err; + break; + default: NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action in switchdev mode"); return -EINVAL; diff --git a/drivers/net/ethernet/intel/ice/ice_type.h b/drivers/net/ethernet/intel/ice/ice_type.h index 8ed1edd3dea56..5f04b1318c9ec 100644 --- a/drivers/net/ethernet/intel/ice/ice_type.h +++ b/drivers/net/ethernet/intel/ice/ice_type.h @@ -1042,6 +1042,7 @@ enum ice_sw_fwd_act_type { ICE_FWD_TO_Q, ICE_FWD_TO_QGRP, ICE_DROP_PACKET, + ICE_MIRROR_PACKET, ICE_NOP, ICE_INVAL_ACT }; -- 2.30.2