From cd63454902d067b27453823aa471949a7cc7390a Mon Sep 17 00:00:00 2001 From: Marcin Szycik Date: Thu, 8 Sep 2022 10:16:44 -0700 Subject: ice: Add L2TPv3 hardware offload support Add support for offloading packets based on L2TPv3 session id in switchdev mode. Example filter: tc filter add dev $PF1 ingress prio 1 protocol ip flower ip_proto l2tp \ l2tpv3_sid 1234 skip_sw action mirred egress redirect dev $VF1_PR Changes in iproute2 are required to be able to specify l2tpv3_sid. ICE COMMS DDP package is required to create a filter as it contains L2TPv3 profiles. Reviewed-by: Michal Swiatkowski Signed-off-by: Marcin Szycik Signed-off-by: Tony Nguyen Signed-off-by: Paolo Abeni --- drivers/net/ethernet/intel/ice/ice_tc_lib.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet/intel/ice/ice_tc_lib.c') diff --git a/drivers/net/ethernet/intel/ice/ice_tc_lib.c b/drivers/net/ethernet/intel/ice/ice_tc_lib.c index 42df686e0215..170e04eaad18 100644 --- a/drivers/net/ethernet/intel/ice/ice_tc_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_tc_lib.c @@ -71,6 +71,10 @@ ice_tc_count_lkups(u32 flags, struct ice_tc_flower_lyr_2_4_hdrs *headers, if (flags & (ICE_TC_FLWR_FIELD_IP_TOS | ICE_TC_FLWR_FIELD_IP_TTL)) lkups_cnt++; + /* are L2TPv3 options specified? */ + if (flags & ICE_TC_FLWR_FIELD_L2TPV3_SESSID) + lkups_cnt++; + /* is L4 (TCP/UDP/any other L4 protocol fields) specified? */ if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | ICE_TC_FLWR_FIELD_SRC_L4_PORT)) @@ -515,6 +519,17 @@ ice_tc_fill_rules(struct ice_hw *hw, u32 flags, i++; } + if (flags & ICE_TC_FLWR_FIELD_L2TPV3_SESSID) { + list[i].type = ICE_L2TPV3; + + list[i].h_u.l2tpv3_sess_hdr.session_id = + headers->l2tpv3_hdr.session_id; + list[i].m_u.l2tpv3_sess_hdr.session_id = + cpu_to_be32(0xFFFFFFFF); + + i++; + } + /* copy L4 (src, dest) port */ if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | ICE_TC_FLWR_FIELD_SRC_L4_PORT)) { @@ -1168,7 +1183,8 @@ ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi, BIT(FLOW_DISSECTOR_KEY_IP) | BIT(FLOW_DISSECTOR_KEY_ENC_IP) | BIT(FLOW_DISSECTOR_KEY_PORTS) | - BIT(FLOW_DISSECTOR_KEY_PPPOE))) { + BIT(FLOW_DISSECTOR_KEY_PPPOE) | + BIT(FLOW_DISSECTOR_KEY_L2TPV3))) { NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported key used"); return -EOPNOTSUPP; } @@ -1351,6 +1367,15 @@ ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi, ice_tc_set_tos_ttl(&match, fltr, headers, false); } + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_L2TPV3)) { + struct flow_match_l2tpv3 match; + + flow_rule_match_l2tpv3(rule, &match); + + fltr->flags |= ICE_TC_FLWR_FIELD_L2TPV3_SESSID; + headers->l2tpv3_hdr.session_id = match.key->session_id; + } + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { struct flow_match_ports match; -- cgit v1.2.3