265 lines
6.0 KiB
C
265 lines
6.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2019, Intel Corporation. */
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#ifndef _ICE_PROTOCOL_TYPE_H_
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#define _ICE_PROTOCOL_TYPE_H_
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#define ICE_IPV6_ADDR_LENGTH 16
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/* Each recipe can match up to 5 different fields. Fields to match can be meta-
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* data, values extracted from packet headers, or results from other recipes.
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* One of the 5 fields is reserved for matching the switch ID. So, up to 4
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* recipes can provide intermediate results to another one through chaining,
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* e.g. recipes 0, 1, 2, and 3 can provide intermediate results to recipe 4.
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*/
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#define ICE_NUM_WORDS_RECIPE 4
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/* Max recipes that can be chained */
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#define ICE_MAX_CHAIN_RECIPE 5
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/* 1 word reserved for switch ID from allowed 5 words.
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* So a recipe can have max 4 words. And you can chain 5 such recipes
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* together. So maximum words that can be programmed for look up is 5 * 4.
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*/
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#define ICE_MAX_CHAIN_WORDS (ICE_NUM_WORDS_RECIPE * ICE_MAX_CHAIN_RECIPE)
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/* Field vector index corresponding to chaining */
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#define ICE_CHAIN_FV_INDEX_START 47
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enum ice_protocol_type {
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ICE_MAC_OFOS = 0,
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ICE_MAC_IL,
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ICE_ETYPE_OL,
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ICE_ETYPE_IL,
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ICE_VLAN_OFOS,
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ICE_IPV4_OFOS,
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ICE_IPV4_IL,
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ICE_IPV6_OFOS,
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ICE_IPV6_IL,
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ICE_TCP_IL,
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ICE_UDP_OF,
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ICE_UDP_ILOS,
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ICE_VXLAN,
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ICE_GENEVE,
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ICE_NVGRE,
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ICE_GTP,
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ICE_GTP_NO_PAY,
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ICE_VXLAN_GPE,
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ICE_SCTP_IL,
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ICE_PROTOCOL_LAST
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};
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enum ice_sw_tunnel_type {
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ICE_NON_TUN = 0,
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ICE_SW_TUN_AND_NON_TUN,
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ICE_SW_TUN_VXLAN,
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ICE_SW_TUN_GENEVE,
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ICE_SW_TUN_NVGRE,
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ICE_SW_TUN_GTPU,
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ICE_SW_TUN_GTPC,
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ICE_ALL_TUNNELS /* All tunnel types including NVGRE */
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};
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/* Decoders for ice_prot_id:
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* - F: First
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* - I: Inner
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* - L: Last
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* - O: Outer
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* - S: Single
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*/
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enum ice_prot_id {
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ICE_PROT_ID_INVAL = 0,
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ICE_PROT_MAC_OF_OR_S = 1,
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ICE_PROT_MAC_IL = 4,
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ICE_PROT_ETYPE_OL = 9,
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ICE_PROT_ETYPE_IL = 10,
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ICE_PROT_IPV4_OF_OR_S = 32,
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ICE_PROT_IPV4_IL = 33,
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ICE_PROT_IPV6_OF_OR_S = 40,
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ICE_PROT_IPV6_IL = 41,
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ICE_PROT_TCP_IL = 49,
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ICE_PROT_UDP_OF = 52,
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ICE_PROT_UDP_IL_OR_S = 53,
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ICE_PROT_GRE_OF = 64,
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ICE_PROT_ESP_F = 88,
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ICE_PROT_ESP_2 = 89,
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ICE_PROT_SCTP_IL = 96,
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ICE_PROT_ICMP_IL = 98,
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ICE_PROT_ICMPV6_IL = 100,
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ICE_PROT_PPPOE = 103,
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ICE_PROT_L2TPV3 = 104,
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ICE_PROT_ARP_OF = 118,
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ICE_PROT_META_ID = 255, /* when offset == metadata */
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ICE_PROT_INVALID = 255 /* when offset == ICE_FV_OFFSET_INVAL */
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};
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#define ICE_VNI_OFFSET 12 /* offset of VNI from ICE_PROT_UDP_OF */
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#define ICE_MAC_OFOS_HW 1
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#define ICE_MAC_IL_HW 4
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#define ICE_ETYPE_OL_HW 9
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#define ICE_ETYPE_IL_HW 10
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#define ICE_VLAN_OF_HW 16
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#define ICE_VLAN_OL_HW 17
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#define ICE_IPV4_OFOS_HW 32
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#define ICE_IPV4_IL_HW 33
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#define ICE_IPV6_OFOS_HW 40
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#define ICE_IPV6_IL_HW 41
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#define ICE_TCP_IL_HW 49
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#define ICE_UDP_ILOS_HW 53
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#define ICE_GRE_OF_HW 64
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#define ICE_UDP_OF_HW 52 /* UDP Tunnels */
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#define ICE_META_DATA_ID_HW 255 /* this is used for tunnel type */
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#define ICE_MDID_SIZE 2
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#define ICE_TUN_FLAG_MDID 21
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#define ICE_TUN_FLAG_MDID_OFF (ICE_MDID_SIZE * ICE_TUN_FLAG_MDID)
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#define ICE_TUN_FLAG_MASK 0xFF
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#define ICE_TUN_FLAG_FV_IND 2
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/* Mapping of software defined protocol ID to hardware defined protocol ID */
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struct ice_protocol_entry {
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enum ice_protocol_type type;
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u8 protocol_id;
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};
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struct ice_ether_hdr {
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u8 dst_addr[ETH_ALEN];
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u8 src_addr[ETH_ALEN];
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};
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struct ice_ethtype_hdr {
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__be16 ethtype_id;
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};
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struct ice_ether_vlan_hdr {
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u8 dst_addr[ETH_ALEN];
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u8 src_addr[ETH_ALEN];
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__be32 vlan_id;
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};
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struct ice_vlan_hdr {
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__be16 type;
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__be16 vlan;
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};
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struct ice_ipv4_hdr {
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u8 version;
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u8 tos;
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__be16 total_length;
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__be16 id;
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__be16 frag_off;
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u8 time_to_live;
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u8 protocol;
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__be16 check;
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__be32 src_addr;
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__be32 dst_addr;
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};
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struct ice_ipv6_hdr {
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__be32 be_ver_tc_flow;
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__be16 payload_len;
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u8 next_hdr;
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u8 hop_limit;
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u8 src_addr[ICE_IPV6_ADDR_LENGTH];
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u8 dst_addr[ICE_IPV6_ADDR_LENGTH];
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};
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struct ice_sctp_hdr {
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__be16 src_port;
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__be16 dst_port;
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__be32 verification_tag;
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__be32 check;
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};
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struct ice_l4_hdr {
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__be16 src_port;
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__be16 dst_port;
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__be16 len;
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__be16 check;
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};
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struct ice_udp_tnl_hdr {
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__be16 field;
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__be16 proto_type;
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__be32 vni; /* only use lower 24-bits */
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};
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struct ice_udp_gtp_hdr {
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u8 flags;
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u8 msg_type;
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__be16 rsrvd_len;
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__be32 teid;
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__be16 rsrvd_seq_nbr;
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u8 rsrvd_n_pdu_nbr;
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u8 rsrvd_next_ext;
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u8 rsvrd_ext_len;
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u8 pdu_type;
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u8 qfi;
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u8 rsvrd;
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};
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struct ice_nvgre_hdr {
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__be16 flags;
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__be16 protocol;
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__be32 tni_flow;
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};
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union ice_prot_hdr {
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struct ice_ether_hdr eth_hdr;
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struct ice_ethtype_hdr ethertype;
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struct ice_vlan_hdr vlan_hdr;
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struct ice_ipv4_hdr ipv4_hdr;
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struct ice_ipv6_hdr ipv6_hdr;
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struct ice_l4_hdr l4_hdr;
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struct ice_sctp_hdr sctp_hdr;
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struct ice_udp_tnl_hdr tnl_hdr;
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struct ice_nvgre_hdr nvgre_hdr;
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struct ice_udp_gtp_hdr gtp_hdr;
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};
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/* This is mapping table entry that maps every word within a given protocol
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* structure to the real byte offset as per the specification of that
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* protocol header.
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* for e.g. dst address is 3 words in ethertype header and corresponding bytes
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* are 0, 2, 3 in the actual packet header and src address is at 4, 6, 8
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*/
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struct ice_prot_ext_tbl_entry {
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enum ice_protocol_type prot_type;
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/* Byte offset into header of given protocol type */
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u8 offs[sizeof(union ice_prot_hdr)];
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};
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/* Extractions to be looked up for a given recipe */
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struct ice_prot_lkup_ext {
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u16 prot_type;
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u8 n_val_words;
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/* create a buffer to hold max words per recipe */
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u16 field_off[ICE_MAX_CHAIN_WORDS];
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u16 field_mask[ICE_MAX_CHAIN_WORDS];
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struct ice_fv_word fv_words[ICE_MAX_CHAIN_WORDS];
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/* Indicate field offsets that have field vector indices assigned */
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DECLARE_BITMAP(done, ICE_MAX_CHAIN_WORDS);
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};
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struct ice_pref_recipe_group {
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u8 n_val_pairs; /* Number of valid pairs */
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struct ice_fv_word pairs[ICE_NUM_WORDS_RECIPE];
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u16 mask[ICE_NUM_WORDS_RECIPE];
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};
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struct ice_recp_grp_entry {
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struct list_head l_entry;
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#define ICE_INVAL_CHAIN_IND 0xFF
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u16 rid;
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u8 chain_idx;
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u16 fv_idx[ICE_NUM_WORDS_RECIPE];
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u16 fv_mask[ICE_NUM_WORDS_RECIPE];
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struct ice_pref_recipe_group r_group;
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};
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#endif /* _ICE_PROTOCOL_TYPE_H_ */
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