diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_tc_lib.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_tc_lib.c | 1369 |
1 files changed, 1369 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_tc_lib.c b/drivers/net/ethernet/intel/ice/ice_tc_lib.c new file mode 100644 index 000000000000..e5d23feb6701 --- /dev/null +++ b/drivers/net/ethernet/intel/ice/ice_tc_lib.c @@ -0,0 +1,1369 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2019-2021, Intel Corporation. */ + +#include "ice.h" +#include "ice_tc_lib.h" +#include "ice_fltr.h" +#include "ice_lib.h" +#include "ice_protocol_type.h" + +/** + * ice_tc_count_lkups - determine lookup count for switch filter + * @flags: TC-flower flags + * @headers: Pointer to TC flower filter header structure + * @fltr: Pointer to outer TC filter structure + * + * Determine lookup count based on TC flower input for switch filter. + */ +static int +ice_tc_count_lkups(u32 flags, struct ice_tc_flower_lyr_2_4_hdrs *headers, + struct ice_tc_flower_fltr *fltr) +{ + int lkups_cnt = 0; + + if (flags & ICE_TC_FLWR_FIELD_TENANT_ID) + lkups_cnt++; + + if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | + ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 | + ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | + ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) + lkups_cnt++; + + if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) + lkups_cnt++; + + /* currently inner etype filter isn't supported */ + if ((flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) && + fltr->tunnel_type == TNL_LAST) + lkups_cnt++; + + /* are MAC fields specified? */ + if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | ICE_TC_FLWR_FIELD_SRC_MAC)) + lkups_cnt++; + + /* is VLAN specified? */ + if (flags & ICE_TC_FLWR_FIELD_VLAN) + lkups_cnt++; + + /* are IPv[4|6] fields specified? */ + if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | ICE_TC_FLWR_FIELD_SRC_IPV4 | + ICE_TC_FLWR_FIELD_DEST_IPV6 | ICE_TC_FLWR_FIELD_SRC_IPV6)) + 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)) + lkups_cnt++; + + return lkups_cnt; +} + +static enum ice_protocol_type ice_proto_type_from_mac(bool inner) +{ + return inner ? ICE_MAC_IL : ICE_MAC_OFOS; +} + +static enum ice_protocol_type ice_proto_type_from_ipv4(bool inner) +{ + return inner ? ICE_IPV4_IL : ICE_IPV4_OFOS; +} + +static enum ice_protocol_type ice_proto_type_from_ipv6(bool inner) +{ + return inner ? ICE_IPV6_IL : ICE_IPV6_OFOS; +} + +static enum ice_protocol_type +ice_proto_type_from_l4_port(bool inner, u16 ip_proto) +{ + if (inner) { + switch (ip_proto) { + case IPPROTO_UDP: + return ICE_UDP_ILOS; + } + } else { + switch (ip_proto) { + case IPPROTO_TCP: + return ICE_TCP_IL; + case IPPROTO_UDP: + return ICE_UDP_OF; + } + } + + return 0; +} + +static enum ice_protocol_type +ice_proto_type_from_tunnel(enum ice_tunnel_type type) +{ + switch (type) { + case TNL_VXLAN: + return ICE_VXLAN; + case TNL_GENEVE: + return ICE_GENEVE; + case TNL_GRETAP: + return ICE_NVGRE; + default: + return 0; + } +} + +static enum ice_sw_tunnel_type +ice_sw_type_from_tunnel(enum ice_tunnel_type type) +{ + switch (type) { + case TNL_VXLAN: + return ICE_SW_TUN_VXLAN; + case TNL_GENEVE: + return ICE_SW_TUN_GENEVE; + case TNL_GRETAP: + return ICE_SW_TUN_NVGRE; + default: + return ICE_NON_TUN; + } +} + +static int +ice_tc_fill_tunnel_outer(u32 flags, struct ice_tc_flower_fltr *fltr, + struct ice_adv_lkup_elem *list) +{ + struct ice_tc_flower_lyr_2_4_hdrs *hdr = &fltr->outer_headers; + int i = 0; + + if (flags & ICE_TC_FLWR_FIELD_TENANT_ID) { + u32 tenant_id; + + list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type); + switch (fltr->tunnel_type) { + case TNL_VXLAN: + case TNL_GENEVE: + tenant_id = be32_to_cpu(fltr->tenant_id) << 8; + list[i].h_u.tnl_hdr.vni = cpu_to_be32(tenant_id); + memcpy(&list[i].m_u.tnl_hdr.vni, "\xff\xff\xff\x00", 4); + i++; + break; + case TNL_GRETAP: + list[i].h_u.nvgre_hdr.tni_flow = fltr->tenant_id; + memcpy(&list[i].m_u.nvgre_hdr.tni_flow, "\xff\xff\xff\xff", 4); + i++; + break; + default: + break; + } + } + + if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | + ICE_TC_FLWR_FIELD_ENC_DEST_IPV4)) { + list[i].type = ice_proto_type_from_ipv4(false); + + if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV4) { + list[i].h_u.ipv4_hdr.src_addr = hdr->l3_key.src_ipv4; + list[i].m_u.ipv4_hdr.src_addr = hdr->l3_mask.src_ipv4; + } + if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV4) { + list[i].h_u.ipv4_hdr.dst_addr = hdr->l3_key.dst_ipv4; + list[i].m_u.ipv4_hdr.dst_addr = hdr->l3_mask.dst_ipv4; + } + i++; + } + + if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | + ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) { + list[i].type = ice_proto_type_from_ipv6(false); + + if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV6) { + memcpy(&list[i].h_u.ipv6_hdr.src_addr, + &hdr->l3_key.src_ipv6_addr, + sizeof(hdr->l3_key.src_ipv6_addr)); + memcpy(&list[i].m_u.ipv6_hdr.src_addr, + &hdr->l3_mask.src_ipv6_addr, + sizeof(hdr->l3_mask.src_ipv6_addr)); + } + if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV6) { + memcpy(&list[i].h_u.ipv6_hdr.dst_addr, + &hdr->l3_key.dst_ipv6_addr, + sizeof(hdr->l3_key.dst_ipv6_addr)); + memcpy(&list[i].m_u.ipv6_hdr.dst_addr, + &hdr->l3_mask.dst_ipv6_addr, + sizeof(hdr->l3_mask.dst_ipv6_addr)); + } + i++; + } + + if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) { + list[i].type = ice_proto_type_from_l4_port(false, hdr->l3_key.ip_proto); + list[i].h_u.l4_hdr.dst_port = hdr->l4_key.dst_port; + list[i].m_u.l4_hdr.dst_port = hdr->l4_mask.dst_port; + i++; + } + + return i; +} + +/** + * ice_tc_fill_rules - fill filter rules based on TC fltr + * @hw: pointer to HW structure + * @flags: tc flower field flags + * @tc_fltr: pointer to TC flower filter + * @list: list of advance rule elements + * @rule_info: pointer to information about rule + * @l4_proto: pointer to information such as L4 proto type + * + * Fill ice_adv_lkup_elem list based on TC flower flags and + * TC flower headers. This list should be used to add + * advance filter in hardware. + */ +static int +ice_tc_fill_rules(struct ice_hw *hw, u32 flags, + struct ice_tc_flower_fltr *tc_fltr, + struct ice_adv_lkup_elem *list, + struct ice_adv_rule_info *rule_info, + u16 *l4_proto) +{ + struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; + bool inner = false; + int i = 0; + + rule_info->tun_type = ice_sw_type_from_tunnel(tc_fltr->tunnel_type); + if (tc_fltr->tunnel_type != TNL_LAST) { + i = ice_tc_fill_tunnel_outer(flags, tc_fltr, list); + + headers = &tc_fltr->inner_headers; + inner = true; + } else if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) { + list[i].type = ICE_ETYPE_OL; + list[i].h_u.ethertype.ethtype_id = headers->l2_key.n_proto; + list[i].m_u.ethertype.ethtype_id = headers->l2_mask.n_proto; + i++; + } + + if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | + ICE_TC_FLWR_FIELD_SRC_MAC)) { + struct ice_tc_l2_hdr *l2_key, *l2_mask; + + l2_key = &headers->l2_key; + l2_mask = &headers->l2_mask; + + list[i].type = ice_proto_type_from_mac(inner); + if (flags & ICE_TC_FLWR_FIELD_DST_MAC) { + ether_addr_copy(list[i].h_u.eth_hdr.dst_addr, + l2_key->dst_mac); + ether_addr_copy(list[i].m_u.eth_hdr.dst_addr, + l2_mask->dst_mac); + } + if (flags & ICE_TC_FLWR_FIELD_SRC_MAC) { + ether_addr_copy(list[i].h_u.eth_hdr.src_addr, + l2_key->src_mac); + ether_addr_copy(list[i].m_u.eth_hdr.src_addr, + l2_mask->src_mac); + } + i++; + } + + /* copy VLAN info */ + if (flags & ICE_TC_FLWR_FIELD_VLAN) { + list[i].type = ICE_VLAN_OFOS; + list[i].h_u.vlan_hdr.vlan = headers->vlan_hdr.vlan_id; + list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xFFFF); + i++; + } + + /* copy L3 (IPv[4|6]: src, dest) address */ + if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | + ICE_TC_FLWR_FIELD_SRC_IPV4)) { + struct ice_tc_l3_hdr *l3_key, *l3_mask; + + list[i].type = ice_proto_type_from_ipv4(inner); + l3_key = &headers->l3_key; + l3_mask = &headers->l3_mask; + if (flags & ICE_TC_FLWR_FIELD_DEST_IPV4) { + list[i].h_u.ipv4_hdr.dst_addr = l3_key->dst_ipv4; + list[i].m_u.ipv4_hdr.dst_addr = l3_mask->dst_ipv4; + } + if (flags & ICE_TC_FLWR_FIELD_SRC_IPV4) { + list[i].h_u.ipv4_hdr.src_addr = l3_key->src_ipv4; + list[i].m_u.ipv4_hdr.src_addr = l3_mask->src_ipv4; + } + i++; + } else if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV6 | + ICE_TC_FLWR_FIELD_SRC_IPV6)) { + struct ice_ipv6_hdr *ipv6_hdr, *ipv6_mask; + struct ice_tc_l3_hdr *l3_key, *l3_mask; + + list[i].type = ice_proto_type_from_ipv6(inner); + ipv6_hdr = &list[i].h_u.ipv6_hdr; + ipv6_mask = &list[i].m_u.ipv6_hdr; + l3_key = &headers->l3_key; + l3_mask = &headers->l3_mask; + + if (flags & ICE_TC_FLWR_FIELD_DEST_IPV6) { + memcpy(&ipv6_hdr->dst_addr, &l3_key->dst_ipv6_addr, + sizeof(l3_key->dst_ipv6_addr)); + memcpy(&ipv6_mask->dst_addr, &l3_mask->dst_ipv6_addr, + sizeof(l3_mask->dst_ipv6_addr)); + } + if (flags & ICE_TC_FLWR_FIELD_SRC_IPV6) { + memcpy(&ipv6_hdr->src_addr, &l3_key->src_ipv6_addr, + sizeof(l3_key->src_ipv6_addr)); + memcpy(&ipv6_mask->src_addr, &l3_mask->src_ipv6_addr, + sizeof(l3_mask->src_ipv6_addr)); + } + i++; + } + + /* copy L4 (src, dest) port */ + if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | + ICE_TC_FLWR_FIELD_SRC_L4_PORT)) { + struct ice_tc_l4_hdr *l4_key, *l4_mask; + + list[i].type = ice_proto_type_from_l4_port(inner, headers->l3_key.ip_proto); + l4_key = &headers->l4_key; + l4_mask = &headers->l4_mask; + + if (flags & ICE_TC_FLWR_FIELD_DEST_L4_PORT) { + list[i].h_u.l4_hdr.dst_port = l4_key->dst_port; + list[i].m_u.l4_hdr.dst_port = l4_mask->dst_port; + } + if (flags & ICE_TC_FLWR_FIELD_SRC_L4_PORT) { + list[i].h_u.l4_hdr.src_port = l4_key->src_port; + list[i].m_u.l4_hdr.src_port = l4_mask->src_port; + } + i++; + } + + return i; +} + +/** + * ice_tc_tun_get_type - get the tunnel type + * @tunnel_dev: ptr to tunnel device + * + * This function detects appropriate tunnel_type if specified device is + * tunnel device such as VXLAN/Geneve + */ +static int ice_tc_tun_get_type(struct net_device *tunnel_dev) +{ + if (netif_is_vxlan(tunnel_dev)) + return TNL_VXLAN; + if (netif_is_geneve(tunnel_dev)) + return TNL_GENEVE; + if (netif_is_gretap(tunnel_dev) || + netif_is_ip6gretap(tunnel_dev)) + return TNL_GRETAP; + return TNL_LAST; +} + +bool ice_is_tunnel_supported(struct net_device *dev) +{ + return ice_tc_tun_get_type(dev) != TNL_LAST; +} + +static int +ice_eswitch_tc_parse_action(struct ice_tc_flower_fltr *fltr, + struct flow_action_entry *act) +{ + struct ice_repr *repr; + + switch (act->id) { + case FLOW_ACTION_DROP: + fltr->action.fltr_act = ICE_DROP_PACKET; + break; + + case FLOW_ACTION_REDIRECT: + fltr->action.fltr_act = ICE_FWD_TO_VSI; + + if (ice_is_port_repr_netdev(act->dev)) { + repr = ice_netdev_to_repr(act->dev); + + fltr->dest_vsi = repr->src_vsi; + fltr->direction = ICE_ESWITCH_FLTR_INGRESS; + } else if (netif_is_ice(act->dev) || + ice_is_tunnel_supported(act->dev)) { + fltr->direction = ICE_ESWITCH_FLTR_EGRESS; + } else { + NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported netdevice in switchdev mode"); + return -EINVAL; + } + + break; + + default: + NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action in switchdev mode"); + return -EINVAL; + } + + return 0; +} + +static int +ice_eswitch_add_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) +{ + struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; + struct ice_adv_rule_info rule_info = { 0 }; + struct ice_rule_query_data rule_added; + struct ice_hw *hw = &vsi->back->hw; + struct ice_adv_lkup_elem *list; + u32 flags = fltr->flags; + enum ice_status status; + int lkups_cnt; + int ret = 0; + int i; + + if (!flags || (flags & ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT)) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported encap field(s)"); + return -EOPNOTSUPP; + } + + lkups_cnt = ice_tc_count_lkups(flags, headers, fltr); + list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); + if (!list) + return -ENOMEM; + + i = ice_tc_fill_rules(hw, flags, fltr, list, &rule_info, NULL); + if (i != lkups_cnt) { + ret = -EINVAL; + goto exit; + } + + /* egress traffic is always redirect to uplink */ + if (fltr->direction == ICE_ESWITCH_FLTR_EGRESS) + fltr->dest_vsi = vsi->back->switchdev.uplink_vsi; + + rule_info.sw_act.fltr_act = fltr->action.fltr_act; + if (fltr->action.fltr_act != ICE_DROP_PACKET) + rule_info.sw_act.vsi_handle = fltr->dest_vsi->idx; + /* For now, making priority to be highest, and it also becomes + * the priority for recipe which will get created as a result of + * new extraction sequence based on input set. + * Priority '7' is max val for switch recipe, higher the number + * results into order of switch rule evaluation. + */ + rule_info.priority = 7; + + if (fltr->direction == ICE_ESWITCH_FLTR_INGRESS) { + rule_info.sw_act.flag |= ICE_FLTR_RX; + rule_info.sw_act.src = hw->pf_id; + rule_info.rx = true; + } else { + rule_info.sw_act.flag |= ICE_FLTR_TX; + rule_info.sw_act.src = vsi->idx; + rule_info.rx = false; + rule_info.flags_info.act = ICE_SINGLE_ACT_LAN_ENABLE; + rule_info.flags_info.act_valid = true; + } + + /* specify the cookie as filter_rule_id */ + rule_info.fltr_rule_id = fltr->cookie; + + status = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); + if (status == ICE_ERR_ALREADY_EXISTS) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because it already exist"); + ret = -EINVAL; + goto exit; + } else if (status) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter due to error"); + ret = -EIO; + goto exit; + } + + /* store the output params, which are needed later for removing + * advanced switch filter + */ + fltr->rid = rule_added.rid; + fltr->rule_id = rule_added.rule_id; + +exit: + kfree(list); + return ret; +} + +/** + * ice_add_tc_flower_adv_fltr - add appropriate filter rules + * @vsi: Pointer to VSI + * @tc_fltr: Pointer to TC flower filter structure + * + * based on filter parameters using Advance recipes supported + * by OS package. + */ +static int +ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi, + struct ice_tc_flower_fltr *tc_fltr) +{ + struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; + struct ice_adv_rule_info rule_info = {0}; + struct ice_rule_query_data rule_added; + struct ice_adv_lkup_elem *list; + struct ice_pf *pf = vsi->back; + struct ice_hw *hw = &pf->hw; + u32 flags = tc_fltr->flags; + struct ice_vsi *ch_vsi; + struct device *dev; + u16 lkups_cnt = 0; + u16 l4_proto = 0; + int ret = 0; + u16 i = 0; + + dev = ice_pf_to_dev(pf); + if (ice_is_safe_mode(pf)) { + NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because driver is in safe mode"); + return -EOPNOTSUPP; + } + + if (!flags || (flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 | + ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | + ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | + ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | + ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT))) { + NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unsupported encap field(s)"); + return -EOPNOTSUPP; + } + + /* get the channel (aka ADQ VSI) */ + if (tc_fltr->dest_vsi) + ch_vsi = tc_fltr->dest_vsi; + else + ch_vsi = vsi->tc_map_vsi[tc_fltr->action.tc_class]; + + lkups_cnt = ice_tc_count_lkups(flags, headers, tc_fltr); + list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); + if (!list) + return -ENOMEM; + + i = ice_tc_fill_rules(hw, flags, tc_fltr, list, &rule_info, &l4_proto); + if (i != lkups_cnt) { + ret = -EINVAL; + goto exit; + } + + rule_info.sw_act.fltr_act = tc_fltr->action.fltr_act; + if (tc_fltr->action.tc_class >= ICE_CHNL_START_TC) { + if (!ch_vsi) { + NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because specified destination doesn't exist"); + ret = -EINVAL; + goto exit; + } + + rule_info.sw_act.fltr_act = ICE_FWD_TO_VSI; + rule_info.sw_act.vsi_handle = ch_vsi->idx; + rule_info.priority = 7; + rule_info.sw_act.src = hw->pf_id; + rule_info.rx = true; + dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n", + tc_fltr->action.tc_class, + rule_info.sw_act.vsi_handle, lkups_cnt); + } else { + rule_info.sw_act.flag |= ICE_FLTR_TX; + rule_info.sw_act.src = vsi->idx; + rule_info.rx = false; + } + + /* specify the cookie as filter_rule_id */ + rule_info.fltr_rule_id = tc_fltr->cookie; + + ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); + if (ret == -EEXIST) { + NL_SET_ERR_MSG_MOD(tc_fltr->extack, + "Unable to add filter because it already exist"); + ret = -EINVAL; + goto exit; + } else if (ret) { + NL_SET_ERR_MSG_MOD(tc_fltr->extack, + "Unable to add filter due to error"); + ret = -EIO; + goto exit; + } + + /* store the output params, which are needed later for removing + * advanced switch filter + */ + tc_fltr->rid = rule_added.rid; + tc_fltr->rule_id = rule_added.rule_id; + if (tc_fltr->action.tc_class > 0 && ch_vsi) { + /* For PF ADQ, VSI type is set as ICE_VSI_CHNL, and + * for PF ADQ filter, it is not yet set in tc_fltr, + * hence store the dest_vsi ptr in tc_fltr + */ + if (ch_vsi->type == ICE_VSI_CHNL) + tc_fltr->dest_vsi = ch_vsi; + /* keep track of advanced switch filter for + * destination VSI (channel VSI) + */ + ch_vsi->num_chnl_fltr++; + /* in this case, dest_id is VSI handle (sw handle) */ + tc_fltr->dest_id = rule_added.vsi_handle; + + /* keeps track of channel filters for PF VSI */ + if (vsi->type == ICE_VSI_PF && + (flags & (ICE_TC_FLWR_FIELD_DST_MAC | + ICE_TC_FLWR_FIELD_ENC_DST_MAC))) + pf->num_dmac_chnl_fltrs++; + } + dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x) for TC %u, rid %u, rule_id %u, vsi_idx %u\n", + lkups_cnt, flags, + tc_fltr->action.tc_class, rule_added.rid, + rule_added.rule_id, rule_added.vsi_handle); +exit: + kfree(list); + return ret; +} + +/** + * ice_tc_set_ipv4 - Parse IPv4 addresses from TC flower filter + * @match: Pointer to flow match structure + * @fltr: Pointer to filter structure + * @headers: inner or outer header fields + * @is_encap: set true for tunnel IPv4 address + */ +static int +ice_tc_set_ipv4(struct flow_match_ipv4_addrs *match, + struct ice_tc_flower_fltr *fltr, + struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) +{ + if (match->key->dst) { + if (is_encap) + fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV4; + else + fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV4; + headers->l3_key.dst_ipv4 = match->key->dst; + headers->l3_mask.dst_ipv4 = match->mask->dst; + } + if (match->key->src) { + if (is_encap) + fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV4; + else + fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV4; + headers->l3_key.src_ipv4 = match->key->src; + headers->l3_mask.src_ipv4 = match->mask->src; + } + return 0; +} + +/** + * ice_tc_set_ipv6 - Parse IPv6 addresses from TC flower filter + * @match: Pointer to flow match structure + * @fltr: Pointer to filter structure + * @headers: inner or outer header fields + * @is_encap: set true for tunnel IPv6 address + */ +static int +ice_tc_set_ipv6(struct flow_match_ipv6_addrs *match, + struct ice_tc_flower_fltr *fltr, + struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) +{ + struct ice_tc_l3_hdr *l3_key, *l3_mask; + + /* src and dest IPV6 address should not be LOOPBACK + * (0:0:0:0:0:0:0:1), which can be represented as ::1 + */ + if (ipv6_addr_loopback(&match->key->dst) || + ipv6_addr_loopback(&match->key->src)) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Bad IPv6, addr is LOOPBACK"); + return -EINVAL; + } + /* if src/dest IPv6 address is *,* error */ + if (ipv6_addr_any(&match->mask->dst) && + ipv6_addr_any(&match->mask->src)) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Bad src/dest IPv6, addr is any"); + return -EINVAL; + } + if (!ipv6_addr_any(&match->mask->dst)) { + if (is_encap) + fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV6; + else + fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV6; + } + if (!ipv6_addr_any(&match->mask->src)) { + if (is_encap) + fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV6; + else + fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV6; + } + + l3_key = &headers->l3_key; + l3_mask = &headers->l3_mask; + + if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | + ICE_TC_FLWR_FIELD_SRC_IPV6)) { + memcpy(&l3_key->src_ipv6_addr, &match->key->src.s6_addr, + sizeof(match->key->src.s6_addr)); + memcpy(&l3_mask->src_ipv6_addr, &match->mask->src.s6_addr, + sizeof(match->mask->src.s6_addr)); + } + if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | + ICE_TC_FLWR_FIELD_DEST_IPV6)) { + memcpy(&l3_key->dst_ipv6_addr, &match->key->dst.s6_addr, + sizeof(match->key->dst.s6_addr)); + memcpy(&l3_mask->dst_ipv6_addr, &match->mask->dst.s6_addr, + sizeof(match->mask->dst.s6_addr)); + } + + return 0; +} + +/** + * ice_tc_set_port - Parse ports from TC flower filter + * @match: Flow match structure + * @fltr: Pointer to filter structure + * @headers: inner or outer header fields + * @is_encap: set true for tunnel port + */ +static int +ice_tc_set_port(struct flow_match_ports match, + struct ice_tc_flower_fltr *fltr, + struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) +{ + if (match.key->dst) { + if (is_encap) + fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT; + else + fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT; + fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT; + headers->l4_key.dst_port = match.key->dst; + headers->l4_mask.dst_port = match.mask->dst; + } + if (match.key->src) { + if (is_encap) + fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT; + else + fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT; + fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT; + headers->l4_key.src_port = match.key->src; + headers->l4_mask.src_port = match.mask->src; + } + return 0; +} + +static struct net_device * +ice_get_tunnel_device(struct net_device *dev, struct flow_rule *rule) +{ + struct flow_action_entry *act; + int i; + + if (ice_is_tunnel_supported(dev)) + return dev; + + flow_action_for_each(i, act, &rule->action) { + if (act->id == FLOW_ACTION_REDIRECT && + ice_is_tunnel_supported(act->dev)) + return act->dev; + } + + return NULL; +} + +static int +ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule, + struct ice_tc_flower_fltr *fltr) +{ + struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; + struct flow_match_control enc_control; + + fltr->tunnel_type = ice_tc_tun_get_type(dev); + headers->l3_key.ip_proto = IPPROTO_UDP; + + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { + struct flow_match_enc_keyid enc_keyid; + + flow_rule_match_enc_keyid(rule, &enc_keyid); + + if (!enc_keyid.mask->keyid || + enc_keyid.mask->keyid != cpu_to_be32(ICE_TC_FLOWER_MASK_32)) + return -EINVAL; + + fltr->flags |= ICE_TC_FLWR_FIELD_TENANT_ID; + fltr->tenant_id = enc_keyid.key->keyid; + } + + flow_rule_match_enc_control(rule, &enc_control); + + if (enc_control.key->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { + struct flow_match_ipv4_addrs match; + + flow_rule_match_enc_ipv4_addrs(rule, &match); + if (ice_tc_set_ipv4(&match, fltr, headers, true)) + return -EINVAL; + } else if (enc_control.key->addr_type == + FLOW_DISSECTOR_KEY_IPV6_ADDRS) { + struct flow_match_ipv6_addrs match; + + flow_rule_match_enc_ipv6_addrs(rule, &match); + if (ice_tc_set_ipv6(&match, fltr, headers, true)) + return -EINVAL; + } + + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) { + struct flow_match_ip match; + + flow_rule_match_enc_ip(rule, &match); + headers->l3_key.tos = match.key->tos; + headers->l3_key.ttl = match.key->ttl; + headers->l3_mask.tos = match.mask->tos; + headers->l3_mask.ttl = match.mask->ttl; + } + + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS)) { + struct flow_match_ports match; + + flow_rule_match_enc_ports(rule, &match); + if (ice_tc_set_port(match, fltr, headers, true)) + return -EINVAL; + } + + return 0; +} + +/** + * ice_parse_cls_flower - Parse TC flower filters provided by kernel + * @vsi: Pointer to the VSI + * @filter_dev: Pointer to device on which filter is being added + * @f: Pointer to struct flow_cls_offload + * @fltr: Pointer to filter structure + */ +static int +ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi, + struct flow_cls_offload *f, + struct ice_tc_flower_fltr *fltr) +{ + struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; + struct flow_rule *rule = flow_cls_offload_flow_rule(f); + u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0; + struct flow_dissector *dissector; + struct net_device *tunnel_dev; + + dissector = rule->match.dissector; + + if (dissector->used_keys & + ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | + BIT(FLOW_DISSECTOR_KEY_BASIC) | + BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | + BIT(FLOW_DISSECTOR_KEY_VLAN) | + BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | + BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | + BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | + BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | + BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | + BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | + BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | + BIT(FLOW_DISSECTOR_KEY_ENC_IP) | + BIT(FLOW_DISSECTOR_KEY_PORTS))) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported key used"); + return -EOPNOTSUPP; + } + + tunnel_dev = ice_get_tunnel_device(filter_dev, rule); + if (tunnel_dev) { + int err; + + filter_dev = tunnel_dev; + + err = ice_parse_tunnel_attr(filter_dev, rule, fltr); + if (err) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to parse TC flower tunnel attributes"); + return err; + } + + /* header pointers should point to the inner headers, outer + * header were already set by ice_parse_tunnel_attr + */ + headers = &fltr->inner_headers; + } else if (dissector->used_keys & + (BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | + BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | + BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | + BIT(FLOW_DISSECTOR_KEY_ENC_PORTS))) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Tunnel key used, but device isn't a tunnel"); + return -EOPNOTSUPP; + } else { + fltr->tunnel_type = TNL_LAST; + } + + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { + struct flow_match_basic match; + + flow_rule_match_basic(rule, &match); + + n_proto_key = ntohs(match.key->n_proto); + n_proto_mask = ntohs(match.mask->n_proto); + + if (n_proto_key == ETH_P_ALL || n_proto_key == 0) { + n_proto_key = 0; + n_proto_mask = 0; + } else { + fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID; + } + + headers->l2_key.n_proto = cpu_to_be16(n_proto_key); + headers->l2_mask.n_proto = cpu_to_be16(n_proto_mask); + headers->l3_key.ip_proto = match.key->ip_proto; + } + + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { + struct flow_match_eth_addrs match; + + flow_rule_match_eth_addrs(rule, &match); + + if (!is_zero_ether_addr(match.key->dst)) { + ether_addr_copy(headers->l2_key.dst_mac, + match.key->dst); + ether_addr_copy(headers->l2_mask.dst_mac, + match.mask->dst); + fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; + } + + if (!is_zero_ether_addr(match.key->src)) { + ether_addr_copy(headers->l2_key.src_mac, + match.key->src); + ether_addr_copy(headers->l2_mask.src_mac, + match.mask->src); + fltr->flags |= ICE_TC_FLWR_FIELD_SRC_MAC; + } + } + + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) || + is_vlan_dev(filter_dev)) { + struct flow_dissector_key_vlan mask; + struct flow_dissector_key_vlan key; + struct flow_match_vlan match; + + if (is_vlan_dev(filter_dev)) { + match.key = &key; + match.key->vlan_id = vlan_dev_vlan_id(filter_dev); + match.key->vlan_priority = 0; + match.mask = &mask; + memset(match.mask, 0xff, sizeof(*match.mask)); + match.mask->vlan_priority = 0; + } else { + flow_rule_match_vlan(rule, &match); + } + + if (match.mask->vlan_id) { + if (match.mask->vlan_id == VLAN_VID_MASK) { + fltr->flags |= ICE_TC_FLWR_FIELD_VLAN; + } else { + NL_SET_ERR_MSG_MOD(fltr->extack, "Bad VLAN mask"); + return -EINVAL; + } + } + + headers->vlan_hdr.vlan_id = + cpu_to_be16(match.key->vlan_id & VLAN_VID_MASK); + if (match.mask->vlan_priority) + headers->vlan_hdr.vlan_prio = match.key->vlan_priority; + } + + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { + struct flow_match_control match; + + flow_rule_match_control(rule, &match); + + addr_type = match.key->addr_type; + } + + if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { + struct flow_match_ipv4_addrs match; + + flow_rule_match_ipv4_addrs(rule, &match); + if (ice_tc_set_ipv4(&match, fltr, headers, false)) + return -EINVAL; + } + + if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { + struct flow_match_ipv6_addrs match; + + flow_rule_match_ipv6_addrs(rule, &match); + if (ice_tc_set_ipv6(&match, fltr, headers, false)) + return -EINVAL; + } + + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { + struct flow_match_ports match; + + flow_rule_match_ports(rule, &match); + if (ice_tc_set_port(match, fltr, headers, false)) + return -EINVAL; + switch (headers->l3_key.ip_proto) { + case IPPROTO_TCP: + case IPPROTO_UDP: + break; + default: + NL_SET_ERR_MSG_MOD(fltr->extack, "Only UDP and TCP transport are supported"); + return -EINVAL; + } + } + return 0; +} + +/** + * ice_add_switch_fltr - Add TC flower filters + * @vsi: Pointer to VSI + * @fltr: Pointer to struct ice_tc_flower_fltr + * + * Add filter in HW switch block + */ +static int +ice_add_switch_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) +{ + if (fltr->action.fltr_act == ICE_FWD_TO_QGRP) + return -EOPNOTSUPP; + + if (ice_is_eswitch_mode_switchdev(vsi->back)) + return ice_eswitch_add_tc_fltr(vsi, fltr); + + return ice_add_tc_flower_adv_fltr(vsi, fltr); +} + +/** + * ice_handle_tclass_action - Support directing to a traffic class + * @vsi: Pointer to VSI + * @cls_flower: Pointer to TC flower offload structure + * @fltr: Pointer to TC flower filter structure + * + * Support directing traffic to a traffic class + */ +static int +ice_handle_tclass_action(struct ice_vsi *vsi, + struct flow_cls_offload *cls_flower, + struct ice_tc_flower_fltr *fltr) +{ + int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid); + struct ice_vsi *main_vsi; + + if (tc < 0) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because specified destination is invalid"); + return -EINVAL; + } + if (!tc) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of invalid destination"); + return -EINVAL; + } + + if (!(vsi->all_enatc & BIT(tc))) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of non-existence destination"); + return -EINVAL; + } + + /* Redirect to a TC class or Queue Group */ + main_vsi = ice_get_main_vsi(vsi->back); + if (!main_vsi || !main_vsi->netdev) { + NL_SET_ERR_MSG_MOD(fltr->extack, + "Unable to add filter because of invalid netdevice"); + return -EINVAL; + } + + if ((fltr->flags & ICE_TC_FLWR_FIELD_TENANT_ID) && + (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | + ICE_TC_FLWR_FIELD_SRC_MAC))) { + NL_SET_ERR_MSG_MOD(fltr->extack, + "Unable to add filter because filter using tunnel key and inner MAC is unsupported combination"); + return -EOPNOTSUPP; + } + + /* For ADQ, filter must include dest MAC address, otherwise unwanted + * packets with unrelated MAC address get delivered to ADQ VSIs as long + * as remaining filter criteria is satisfied such as dest IP address + * and dest/src L4 port. Following code is trying to handle: + * 1. For non-tunnel, if user specify MAC addresses, use them (means + * this code won't do anything + * 2. For non-tunnel, if user didn't specify MAC address, add implicit + * dest MAC to be lower netdev's active unicast MAC address + */ + if (!(fltr->flags & ICE_TC_FLWR_FIELD_DST_MAC)) { + ether_addr_copy(fltr->outer_headers.l2_key.dst_mac, + main_vsi->netdev->dev_addr); + eth_broadcast_addr(fltr->outer_headers.l2_mask.dst_mac); + fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; + } + + /* validate specified dest MAC address, make sure either it belongs to + * lower netdev or any of MACVLAN. MACVLANs MAC address are added as + * unicast MAC filter destined to main VSI. + */ + if (!ice_mac_fltr_exist(&main_vsi->back->hw, + fltr->outer_headers.l2_key.dst_mac, + main_vsi->idx)) { + NL_SET_ERR_MSG_MOD(fltr->extack, + "Unable to add filter because legacy MAC filter for specified destination doesn't exist"); + return -EINVAL; + } + + /* Make sure VLAN is already added to main VSI, before allowing ADQ to + * add a VLAN based filter such as MAC + VLAN + L4 port. + */ + if (fltr->flags & ICE_TC_FLWR_FIELD_VLAN) { + u16 vlan_id = be16_to_cpu(fltr->outer_headers.vlan_hdr.vlan_id); + + if (!ice_vlan_fltr_exist(&main_vsi->back->hw, vlan_id, + main_vsi->idx)) { + NL_SET_ERR_MSG_MOD(fltr->extack, + "Unable to add filter because legacy VLAN filter for specified destination doesn't exist"); + return -EINVAL; + } + } + fltr->action.fltr_act = ICE_FWD_TO_VSI; + fltr->action.tc_class = tc; + + return 0; +} + +/** + * ice_parse_tc_flower_actions - Parse the actions for a TC filter + * @vsi: Pointer to VSI + * @cls_flower: Pointer to TC flower offload structure + * @fltr: Pointer to TC flower filter structure + * + * Parse the actions for a TC filter + */ +static int +ice_parse_tc_flower_actions(struct ice_vsi *vsi, + struct flow_cls_offload *cls_flower, + struct ice_tc_flower_fltr *fltr) +{ + struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower); + struct flow_action *flow_action = &rule->action; + struct flow_action_entry *act; + int i; + + if (cls_flower->classid) + return ice_handle_tclass_action(vsi, cls_flower, fltr); + + if (!flow_action_has_entries(flow_action)) + return -EINVAL; + + flow_action_for_each(i, act, flow_action) { + if (ice_is_eswitch_mode_switchdev(vsi->back)) { + int err = ice_eswitch_tc_parse_action(fltr, act); + + if (err) + return err; + continue; + } + /* Allow only one rule per filter */ + + /* Drop action */ + if (act->id == FLOW_ACTION_DROP) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action DROP"); + return -EINVAL; + } + fltr->action.fltr_act = ICE_FWD_TO_VSI; + } + return 0; +} + +/** + * ice_del_tc_fltr - deletes a filter from HW table + * @vsi: Pointer to VSI + * @fltr: Pointer to struct ice_tc_flower_fltr + * + * This function deletes a filter from HW table and manages book-keeping + */ +static int ice_del_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) +{ + struct ice_rule_query_data rule_rem; + struct ice_pf *pf = vsi->back; + int err; + + rule_rem.rid = fltr->rid; + rule_rem.rule_id = fltr->rule_id; + rule_rem.vsi_handle = fltr->dest_id; + err = ice_rem_adv_rule_by_id(&pf->hw, &rule_rem); + if (err) { + if (err == ICE_ERR_DOES_NOT_EXIST) { + NL_SET_ERR_MSG_MOD(fltr->extack, "Filter does not exist"); + return -ENOENT; + } + NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to delete TC flower filter"); + return -EIO; + } + + /* update advanced switch filter count for destination + * VSI if filter destination was VSI + */ + if (fltr->dest_vsi) { + if (fltr->dest_vsi->type == ICE_VSI_CHNL) { + fltr->dest_vsi->num_chnl_fltr--; + + /* keeps track of channel filters for PF VSI */ + if (vsi->type == ICE_VSI_PF && + (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | + ICE_TC_FLWR_FIELD_ENC_DST_MAC))) + pf->num_dmac_chnl_fltrs--; + } + } + return 0; +} + +/** + * ice_add_tc_fltr - adds a TC flower filter + * @netdev: Pointer to netdev + * @vsi: Pointer to VSI + * @f: Pointer to flower offload structure + * @__fltr: Pointer to struct ice_tc_flower_fltr + * + * This function parses TC-flower input fields, parses action, + * and adds a filter. + */ +static int +ice_add_tc_fltr(struct net_device *netdev, struct ice_vsi *vsi, + struct flow_cls_offload *f, + struct ice_tc_flower_fltr **__fltr) +{ + struct ice_tc_flower_fltr *fltr; + int err; + + /* by default, set output to be INVALID */ + *__fltr = NULL; + + fltr = kzalloc(sizeof(*fltr), GFP_KERNEL); + if (!fltr) + return -ENOMEM; + + fltr->cookie = f->cookie; + fltr->extack = f->common.extack; + fltr->src_vsi = vsi; + INIT_HLIST_NODE(&fltr->tc_flower_node); + + err = ice_parse_cls_flower(netdev, vsi, f, fltr); + if (err < 0) + goto err; + + err = ice_parse_tc_flower_actions(vsi, f, fltr); + if (err < 0) + goto err; + + err = ice_add_switch_fltr(vsi, fltr); + if (err < 0) + goto err; + + /* return the newly created filter */ + *__fltr = fltr; + + return 0; +err: + kfree(fltr); + return err; +} + +/** + * ice_find_tc_flower_fltr - Find the TC flower filter in the list + * @pf: Pointer to PF + * @cookie: filter specific cookie + */ +static struct ice_tc_flower_fltr * +ice_find_tc_flower_fltr(struct ice_pf *pf, unsigned long cookie) +{ + struct ice_tc_flower_fltr *fltr; + + hlist_for_each_entry(fltr, &pf->tc_flower_fltr_list, tc_flower_node) + if (cookie == fltr->cookie) + return fltr; + + return NULL; +} + +/** + * ice_add_cls_flower - add TC flower filters + * @netdev: Pointer to filter device + * @vsi: Pointer to VSI + * @cls_flower: Pointer to flower offload structure + */ +int +ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi, + struct flow_cls_offload *cls_flower) +{ + struct netlink_ext_ack *extack = cls_flower->common.extack; + struct net_device *vsi_netdev = vsi->netdev; + struct ice_tc_flower_fltr *fltr; + struct ice_pf *pf = vsi->back; + int err; + + if (ice_is_reset_in_progress(pf->state)) + return -EBUSY; + if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags)) + return -EINVAL; + + if (ice_is_port_repr_netdev(netdev)) + vsi_netdev = netdev; + + if (!(vsi_netdev->features & NETIF_F_HW_TC) && + !test_bit(ICE_FLAG_CLS_FLOWER, pf->flags)) { + /* Based on TC indirect notifications from kernel, all ice + * devices get an instance of rule from higher level device. + * Avoid triggering explicit error in this case. + */ + if (netdev == vsi_netdev) + NL_SET_ERR_MSG_MOD(extack, "can't apply TC flower filters, turn ON hw-tc-offload and try again"); + return -EINVAL; + } + + /* avoid duplicate entries, if exists - return error */ + fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); + if (fltr) { + NL_SET_ERR_MSG_MOD(extack, "filter cookie already exists, ignoring"); + return -EEXIST; + } + + /* prep and add TC-flower filter in HW */ + err = ice_add_tc_fltr(netdev, vsi, cls_flower, &fltr); + if (err) + return err; + + /* add filter into an ordered list */ + hlist_add_head(&fltr->tc_flower_node, &pf->tc_flower_fltr_list); + return 0; +} + +/** + * ice_del_cls_flower - delete TC flower filters + * @vsi: Pointer to VSI + * @cls_flower: Pointer to struct flow_cls_offload + */ +int +ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower) +{ + struct ice_tc_flower_fltr *fltr; + struct ice_pf *pf = vsi->back; + int err; + + /* find filter */ + fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); + if (!fltr) { + if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) && + hlist_empty(&pf->tc_flower_fltr_list)) + return 0; + + NL_SET_ERR_MSG_MOD(cls_flower->common.extack, "failed to delete TC flower filter because unable to find it"); + return -EINVAL; + } + + fltr->extack = cls_flower->common.extack; + /* delete filter from HW */ + err = ice_del_tc_fltr(vsi, fltr); + if (err) + return err; + + /* delete filter from an ordered list */ + hlist_del(&fltr->tc_flower_node); + + /* free the filter node */ + kfree(fltr); + + return 0; +} + +/** + * ice_replay_tc_fltrs - replay TC filters + * @pf: pointer to PF struct + */ +void ice_replay_tc_fltrs(struct ice_pf *pf) +{ + struct ice_tc_flower_fltr *fltr; + struct hlist_node *node; + + hlist_for_each_entry_safe(fltr, node, + &pf->tc_flower_fltr_list, + tc_flower_node) { + fltr->extack = NULL; + ice_add_switch_fltr(fltr->src_vsi, fltr); + } +} |