496 lines
14 KiB
C
496 lines
14 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
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#include <linux/bitfield.h>
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#include <net/pkt_cls.h>
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#include "cmsg.h"
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#include "main.h"
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static void
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nfp_flower_compile_meta_tci(struct nfp_flower_meta_tci *ext,
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struct nfp_flower_meta_tci *msk,
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struct flow_cls_offload *flow, u8 key_type)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
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u16 tmp_tci;
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memset(ext, 0, sizeof(struct nfp_flower_meta_tci));
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memset(msk, 0, sizeof(struct nfp_flower_meta_tci));
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/* Populate the metadata frame. */
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ext->nfp_flow_key_layer = key_type;
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ext->mask_id = ~0;
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msk->nfp_flow_key_layer = key_type;
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msk->mask_id = ~0;
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
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struct flow_match_vlan match;
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flow_rule_match_vlan(rule, &match);
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/* Populate the tci field. */
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tmp_tci = NFP_FLOWER_MASK_VLAN_PRESENT;
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tmp_tci |= FIELD_PREP(NFP_FLOWER_MASK_VLAN_PRIO,
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match.key->vlan_priority) |
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FIELD_PREP(NFP_FLOWER_MASK_VLAN_VID,
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match.key->vlan_id);
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ext->tci = cpu_to_be16(tmp_tci);
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tmp_tci = NFP_FLOWER_MASK_VLAN_PRESENT;
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tmp_tci |= FIELD_PREP(NFP_FLOWER_MASK_VLAN_PRIO,
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match.mask->vlan_priority) |
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FIELD_PREP(NFP_FLOWER_MASK_VLAN_VID,
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match.mask->vlan_id);
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msk->tci = cpu_to_be16(tmp_tci);
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}
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}
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static void
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nfp_flower_compile_ext_meta(struct nfp_flower_ext_meta *frame, u32 key_ext)
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{
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frame->nfp_flow_key_layer2 = cpu_to_be32(key_ext);
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}
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static int
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nfp_flower_compile_port(struct nfp_flower_in_port *frame, u32 cmsg_port,
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bool mask_version, enum nfp_flower_tun_type tun_type,
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struct netlink_ext_ack *extack)
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{
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if (mask_version) {
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frame->in_port = cpu_to_be32(~0);
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return 0;
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}
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if (tun_type) {
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frame->in_port = cpu_to_be32(NFP_FL_PORT_TYPE_TUN | tun_type);
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} else {
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if (!cmsg_port) {
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NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid ingress interface for match offload");
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return -EOPNOTSUPP;
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}
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frame->in_port = cpu_to_be32(cmsg_port);
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}
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return 0;
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}
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static void
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nfp_flower_compile_mac(struct nfp_flower_mac_mpls *ext,
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struct nfp_flower_mac_mpls *msk,
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struct flow_cls_offload *flow)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
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memset(ext, 0, sizeof(struct nfp_flower_mac_mpls));
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memset(msk, 0, sizeof(struct nfp_flower_mac_mpls));
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
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struct flow_match_eth_addrs match;
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flow_rule_match_eth_addrs(rule, &match);
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/* Populate mac frame. */
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ether_addr_copy(ext->mac_dst, &match.key->dst[0]);
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ether_addr_copy(ext->mac_src, &match.key->src[0]);
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ether_addr_copy(msk->mac_dst, &match.mask->dst[0]);
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ether_addr_copy(msk->mac_src, &match.mask->src[0]);
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}
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS)) {
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struct flow_match_mpls match;
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u32 t_mpls;
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flow_rule_match_mpls(rule, &match);
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t_mpls = FIELD_PREP(NFP_FLOWER_MASK_MPLS_LB, match.key->mpls_label) |
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FIELD_PREP(NFP_FLOWER_MASK_MPLS_TC, match.key->mpls_tc) |
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FIELD_PREP(NFP_FLOWER_MASK_MPLS_BOS, match.key->mpls_bos) |
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NFP_FLOWER_MASK_MPLS_Q;
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ext->mpls_lse = cpu_to_be32(t_mpls);
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t_mpls = FIELD_PREP(NFP_FLOWER_MASK_MPLS_LB, match.mask->mpls_label) |
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FIELD_PREP(NFP_FLOWER_MASK_MPLS_TC, match.mask->mpls_tc) |
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FIELD_PREP(NFP_FLOWER_MASK_MPLS_BOS, match.mask->mpls_bos) |
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NFP_FLOWER_MASK_MPLS_Q;
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msk->mpls_lse = cpu_to_be32(t_mpls);
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} else if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
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/* Check for mpls ether type and set NFP_FLOWER_MASK_MPLS_Q
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* bit, which indicates an mpls ether type but without any
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* mpls fields.
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*/
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struct flow_match_basic match;
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flow_rule_match_basic(rule, &match);
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if (match.key->n_proto == cpu_to_be16(ETH_P_MPLS_UC) ||
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match.key->n_proto == cpu_to_be16(ETH_P_MPLS_MC)) {
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ext->mpls_lse = cpu_to_be32(NFP_FLOWER_MASK_MPLS_Q);
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msk->mpls_lse = cpu_to_be32(NFP_FLOWER_MASK_MPLS_Q);
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}
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}
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}
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static void
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nfp_flower_compile_tport(struct nfp_flower_tp_ports *ext,
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struct nfp_flower_tp_ports *msk,
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struct flow_cls_offload *flow)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
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memset(ext, 0, sizeof(struct nfp_flower_tp_ports));
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memset(msk, 0, sizeof(struct nfp_flower_tp_ports));
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
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struct flow_match_ports match;
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flow_rule_match_ports(rule, &match);
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ext->port_src = match.key->src;
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ext->port_dst = match.key->dst;
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msk->port_src = match.mask->src;
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msk->port_dst = match.mask->dst;
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}
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}
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static void
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nfp_flower_compile_ip_ext(struct nfp_flower_ip_ext *ext,
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struct nfp_flower_ip_ext *msk,
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struct flow_cls_offload *flow)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
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struct flow_match_basic match;
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flow_rule_match_basic(rule, &match);
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ext->proto = match.key->ip_proto;
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msk->proto = match.mask->ip_proto;
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}
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
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struct flow_match_ip match;
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flow_rule_match_ip(rule, &match);
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ext->tos = match.key->tos;
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ext->ttl = match.key->ttl;
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msk->tos = match.mask->tos;
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msk->ttl = match.mask->ttl;
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}
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) {
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u16 tcp_flags, tcp_flags_mask;
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struct flow_match_tcp match;
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flow_rule_match_tcp(rule, &match);
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tcp_flags = be16_to_cpu(match.key->flags);
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tcp_flags_mask = be16_to_cpu(match.mask->flags);
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if (tcp_flags & TCPHDR_FIN)
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ext->flags |= NFP_FL_TCP_FLAG_FIN;
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if (tcp_flags_mask & TCPHDR_FIN)
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msk->flags |= NFP_FL_TCP_FLAG_FIN;
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if (tcp_flags & TCPHDR_SYN)
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ext->flags |= NFP_FL_TCP_FLAG_SYN;
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if (tcp_flags_mask & TCPHDR_SYN)
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msk->flags |= NFP_FL_TCP_FLAG_SYN;
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if (tcp_flags & TCPHDR_RST)
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ext->flags |= NFP_FL_TCP_FLAG_RST;
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if (tcp_flags_mask & TCPHDR_RST)
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msk->flags |= NFP_FL_TCP_FLAG_RST;
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if (tcp_flags & TCPHDR_PSH)
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ext->flags |= NFP_FL_TCP_FLAG_PSH;
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if (tcp_flags_mask & TCPHDR_PSH)
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msk->flags |= NFP_FL_TCP_FLAG_PSH;
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if (tcp_flags & TCPHDR_URG)
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ext->flags |= NFP_FL_TCP_FLAG_URG;
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if (tcp_flags_mask & TCPHDR_URG)
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msk->flags |= NFP_FL_TCP_FLAG_URG;
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}
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
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struct flow_match_control match;
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flow_rule_match_control(rule, &match);
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if (match.key->flags & FLOW_DIS_IS_FRAGMENT)
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ext->flags |= NFP_FL_IP_FRAGMENTED;
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if (match.mask->flags & FLOW_DIS_IS_FRAGMENT)
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msk->flags |= NFP_FL_IP_FRAGMENTED;
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if (match.key->flags & FLOW_DIS_FIRST_FRAG)
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ext->flags |= NFP_FL_IP_FRAG_FIRST;
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if (match.mask->flags & FLOW_DIS_FIRST_FRAG)
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msk->flags |= NFP_FL_IP_FRAG_FIRST;
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}
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}
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static void
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nfp_flower_compile_ipv4(struct nfp_flower_ipv4 *ext,
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struct nfp_flower_ipv4 *msk,
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struct flow_cls_offload *flow)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
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struct flow_match_ipv4_addrs match;
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memset(ext, 0, sizeof(struct nfp_flower_ipv4));
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memset(msk, 0, sizeof(struct nfp_flower_ipv4));
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV4_ADDRS)) {
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flow_rule_match_ipv4_addrs(rule, &match);
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ext->ipv4_src = match.key->src;
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ext->ipv4_dst = match.key->dst;
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msk->ipv4_src = match.mask->src;
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msk->ipv4_dst = match.mask->dst;
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}
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nfp_flower_compile_ip_ext(&ext->ip_ext, &msk->ip_ext, flow);
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}
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static void
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nfp_flower_compile_ipv6(struct nfp_flower_ipv6 *ext,
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struct nfp_flower_ipv6 *msk,
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struct flow_cls_offload *flow)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
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memset(ext, 0, sizeof(struct nfp_flower_ipv6));
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memset(msk, 0, sizeof(struct nfp_flower_ipv6));
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV6_ADDRS)) {
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struct flow_match_ipv6_addrs match;
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flow_rule_match_ipv6_addrs(rule, &match);
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ext->ipv6_src = match.key->src;
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ext->ipv6_dst = match.key->dst;
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msk->ipv6_src = match.mask->src;
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msk->ipv6_dst = match.mask->dst;
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}
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nfp_flower_compile_ip_ext(&ext->ip_ext, &msk->ip_ext, flow);
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}
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static int
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nfp_flower_compile_geneve_opt(void *ext, void *msk,
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struct flow_cls_offload *flow)
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{
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struct flow_match_enc_opts match;
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flow_rule_match_enc_opts(flow->rule, &match);
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memcpy(ext, match.key->data, match.key->len);
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memcpy(msk, match.mask->data, match.mask->len);
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return 0;
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}
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static void
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nfp_flower_compile_tun_ipv4_addrs(struct nfp_flower_tun_ipv4 *ext,
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struct nfp_flower_tun_ipv4 *msk,
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struct flow_cls_offload *flow)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS)) {
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struct flow_match_ipv4_addrs match;
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flow_rule_match_enc_ipv4_addrs(rule, &match);
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ext->src = match.key->src;
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ext->dst = match.key->dst;
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msk->src = match.mask->src;
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msk->dst = match.mask->dst;
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}
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}
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static void
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nfp_flower_compile_tun_ip_ext(struct nfp_flower_tun_ip_ext *ext,
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struct nfp_flower_tun_ip_ext *msk,
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struct flow_cls_offload *flow)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
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struct flow_match_ip match;
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flow_rule_match_enc_ip(rule, &match);
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ext->tos = match.key->tos;
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ext->ttl = match.key->ttl;
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msk->tos = match.mask->tos;
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msk->ttl = match.mask->ttl;
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}
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}
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static void
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nfp_flower_compile_ipv4_gre_tun(struct nfp_flower_ipv4_gre_tun *ext,
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struct nfp_flower_ipv4_gre_tun *msk,
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struct flow_cls_offload *flow)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
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memset(ext, 0, sizeof(struct nfp_flower_ipv4_gre_tun));
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memset(msk, 0, sizeof(struct nfp_flower_ipv4_gre_tun));
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/* NVGRE is the only supported GRE tunnel type */
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ext->ethertype = cpu_to_be16(ETH_P_TEB);
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msk->ethertype = cpu_to_be16(~0);
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
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struct flow_match_enc_keyid match;
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flow_rule_match_enc_keyid(rule, &match);
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ext->tun_key = match.key->keyid;
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msk->tun_key = match.mask->keyid;
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ext->tun_flags = cpu_to_be16(NFP_FL_GRE_FLAG_KEY);
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msk->tun_flags = cpu_to_be16(NFP_FL_GRE_FLAG_KEY);
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}
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nfp_flower_compile_tun_ipv4_addrs(&ext->ipv4, &msk->ipv4, flow);
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nfp_flower_compile_tun_ip_ext(&ext->ip_ext, &msk->ip_ext, flow);
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}
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static void
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nfp_flower_compile_ipv4_udp_tun(struct nfp_flower_ipv4_udp_tun *ext,
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struct nfp_flower_ipv4_udp_tun *msk,
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struct flow_cls_offload *flow)
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{
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struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
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memset(ext, 0, sizeof(struct nfp_flower_ipv4_udp_tun));
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memset(msk, 0, sizeof(struct nfp_flower_ipv4_udp_tun));
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
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struct flow_match_enc_keyid match;
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u32 temp_vni;
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flow_rule_match_enc_keyid(rule, &match);
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temp_vni = be32_to_cpu(match.key->keyid) << NFP_FL_TUN_VNI_OFFSET;
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ext->tun_id = cpu_to_be32(temp_vni);
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temp_vni = be32_to_cpu(match.mask->keyid) << NFP_FL_TUN_VNI_OFFSET;
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msk->tun_id = cpu_to_be32(temp_vni);
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}
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nfp_flower_compile_tun_ipv4_addrs(&ext->ipv4, &msk->ipv4, flow);
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nfp_flower_compile_tun_ip_ext(&ext->ip_ext, &msk->ip_ext, flow);
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}
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int nfp_flower_compile_flow_match(struct nfp_app *app,
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struct flow_cls_offload *flow,
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struct nfp_fl_key_ls *key_ls,
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struct net_device *netdev,
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struct nfp_fl_payload *nfp_flow,
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enum nfp_flower_tun_type tun_type,
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struct netlink_ext_ack *extack)
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{
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u32 port_id;
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int err;
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u8 *ext;
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u8 *msk;
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port_id = nfp_flower_get_port_id_from_netdev(app, netdev);
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memset(nfp_flow->unmasked_data, 0, key_ls->key_size);
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memset(nfp_flow->mask_data, 0, key_ls->key_size);
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ext = nfp_flow->unmasked_data;
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msk = nfp_flow->mask_data;
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nfp_flower_compile_meta_tci((struct nfp_flower_meta_tci *)ext,
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(struct nfp_flower_meta_tci *)msk,
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flow, key_ls->key_layer);
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ext += sizeof(struct nfp_flower_meta_tci);
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msk += sizeof(struct nfp_flower_meta_tci);
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/* Populate Extended Metadata if Required. */
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if (NFP_FLOWER_LAYER_EXT_META & key_ls->key_layer) {
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nfp_flower_compile_ext_meta((struct nfp_flower_ext_meta *)ext,
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key_ls->key_layer_two);
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nfp_flower_compile_ext_meta((struct nfp_flower_ext_meta *)msk,
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key_ls->key_layer_two);
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ext += sizeof(struct nfp_flower_ext_meta);
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msk += sizeof(struct nfp_flower_ext_meta);
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}
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/* Populate Exact Port data. */
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err = nfp_flower_compile_port((struct nfp_flower_in_port *)ext,
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port_id, false, tun_type, extack);
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if (err)
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return err;
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/* Populate Mask Port Data. */
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err = nfp_flower_compile_port((struct nfp_flower_in_port *)msk,
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port_id, true, tun_type, extack);
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if (err)
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return err;
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ext += sizeof(struct nfp_flower_in_port);
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msk += sizeof(struct nfp_flower_in_port);
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if (NFP_FLOWER_LAYER_MAC & key_ls->key_layer) {
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nfp_flower_compile_mac((struct nfp_flower_mac_mpls *)ext,
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(struct nfp_flower_mac_mpls *)msk,
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flow);
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ext += sizeof(struct nfp_flower_mac_mpls);
|
|
msk += sizeof(struct nfp_flower_mac_mpls);
|
|
}
|
|
|
|
if (NFP_FLOWER_LAYER_TP & key_ls->key_layer) {
|
|
nfp_flower_compile_tport((struct nfp_flower_tp_ports *)ext,
|
|
(struct nfp_flower_tp_ports *)msk,
|
|
flow);
|
|
ext += sizeof(struct nfp_flower_tp_ports);
|
|
msk += sizeof(struct nfp_flower_tp_ports);
|
|
}
|
|
|
|
if (NFP_FLOWER_LAYER_IPV4 & key_ls->key_layer) {
|
|
nfp_flower_compile_ipv4((struct nfp_flower_ipv4 *)ext,
|
|
(struct nfp_flower_ipv4 *)msk,
|
|
flow);
|
|
ext += sizeof(struct nfp_flower_ipv4);
|
|
msk += sizeof(struct nfp_flower_ipv4);
|
|
}
|
|
|
|
if (NFP_FLOWER_LAYER_IPV6 & key_ls->key_layer) {
|
|
nfp_flower_compile_ipv6((struct nfp_flower_ipv6 *)ext,
|
|
(struct nfp_flower_ipv6 *)msk,
|
|
flow);
|
|
ext += sizeof(struct nfp_flower_ipv6);
|
|
msk += sizeof(struct nfp_flower_ipv6);
|
|
}
|
|
|
|
if (key_ls->key_layer_two & NFP_FLOWER_LAYER2_GRE) {
|
|
__be32 tun_dst;
|
|
|
|
nfp_flower_compile_ipv4_gre_tun((void *)ext, (void *)msk, flow);
|
|
tun_dst = ((struct nfp_flower_ipv4_gre_tun *)ext)->ipv4.dst;
|
|
ext += sizeof(struct nfp_flower_ipv4_gre_tun);
|
|
msk += sizeof(struct nfp_flower_ipv4_gre_tun);
|
|
|
|
/* Store the tunnel destination in the rule data.
|
|
* This must be present and be an exact match.
|
|
*/
|
|
nfp_flow->nfp_tun_ipv4_addr = tun_dst;
|
|
nfp_tunnel_add_ipv4_off(app, tun_dst);
|
|
}
|
|
|
|
if (key_ls->key_layer & NFP_FLOWER_LAYER_VXLAN ||
|
|
key_ls->key_layer_two & NFP_FLOWER_LAYER2_GENEVE) {
|
|
__be32 tun_dst;
|
|
|
|
nfp_flower_compile_ipv4_udp_tun((void *)ext, (void *)msk, flow);
|
|
tun_dst = ((struct nfp_flower_ipv4_udp_tun *)ext)->ipv4.dst;
|
|
ext += sizeof(struct nfp_flower_ipv4_udp_tun);
|
|
msk += sizeof(struct nfp_flower_ipv4_udp_tun);
|
|
|
|
/* Store the tunnel destination in the rule data.
|
|
* This must be present and be an exact match.
|
|
*/
|
|
nfp_flow->nfp_tun_ipv4_addr = tun_dst;
|
|
nfp_tunnel_add_ipv4_off(app, tun_dst);
|
|
|
|
if (key_ls->key_layer_two & NFP_FLOWER_LAYER2_GENEVE_OP) {
|
|
err = nfp_flower_compile_geneve_opt(ext, msk, flow);
|
|
if (err)
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|