1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2019, Intel Corporation. */ 3 4 #ifndef _ICE_PROTOCOL_TYPE_H_ 5 #define _ICE_PROTOCOL_TYPE_H_ 6 #define ICE_IPV6_ADDR_LENGTH 16 7 8 /* Each recipe can match up to 5 different fields. Fields to match can be meta- 9 * data, values extracted from packet headers, or results from other recipes. 10 * One of the 5 fields is reserved for matching the switch ID. So, up to 4 11 * recipes can provide intermediate results to another one through chaining, 12 * e.g. recipes 0, 1, 2, and 3 can provide intermediate results to recipe 4. 13 */ 14 #define ICE_NUM_WORDS_RECIPE 4 15 16 /* Max recipes that can be chained */ 17 #define ICE_MAX_CHAIN_RECIPE 5 18 19 /* 1 word reserved for switch ID from allowed 5 words. 20 * So a recipe can have max 4 words. And you can chain 5 such recipes 21 * together. So maximum words that can be programmed for look up is 5 * 4. 22 */ 23 #define ICE_MAX_CHAIN_WORDS (ICE_NUM_WORDS_RECIPE * ICE_MAX_CHAIN_RECIPE) 24 25 /* Field vector index corresponding to chaining */ 26 #define ICE_CHAIN_FV_INDEX_START 47 27 28 enum ice_protocol_type { 29 ICE_MAC_OFOS = 0, 30 ICE_MAC_IL, 31 ICE_ETYPE_OL, 32 ICE_VLAN_OFOS, 33 ICE_IPV4_OFOS, 34 ICE_IPV4_IL, 35 ICE_IPV6_OFOS, 36 ICE_IPV6_IL, 37 ICE_TCP_IL, 38 ICE_UDP_OF, 39 ICE_UDP_ILOS, 40 ICE_VXLAN, 41 ICE_GENEVE, 42 ICE_NVGRE, 43 ICE_VXLAN_GPE, 44 ICE_SCTP_IL, 45 ICE_PROTOCOL_LAST 46 }; 47 48 enum ice_sw_tunnel_type { 49 ICE_NON_TUN = 0, 50 ICE_SW_TUN_VXLAN, 51 ICE_SW_TUN_GENEVE, 52 ICE_SW_TUN_NVGRE, 53 ICE_ALL_TUNNELS /* All tunnel types including NVGRE */ 54 }; 55 56 /* Decoders for ice_prot_id: 57 * - F: First 58 * - I: Inner 59 * - L: Last 60 * - O: Outer 61 * - S: Single 62 */ 63 enum ice_prot_id { 64 ICE_PROT_ID_INVAL = 0, 65 ICE_PROT_MAC_OF_OR_S = 1, 66 ICE_PROT_MAC_IL = 4, 67 ICE_PROT_ETYPE_OL = 9, 68 ICE_PROT_ETYPE_IL = 10, 69 ICE_PROT_IPV4_OF_OR_S = 32, 70 ICE_PROT_IPV4_IL = 33, 71 ICE_PROT_IPV6_OF_OR_S = 40, 72 ICE_PROT_IPV6_IL = 41, 73 ICE_PROT_TCP_IL = 49, 74 ICE_PROT_UDP_OF = 52, 75 ICE_PROT_UDP_IL_OR_S = 53, 76 ICE_PROT_GRE_OF = 64, 77 ICE_PROT_ESP_F = 88, 78 ICE_PROT_ESP_2 = 89, 79 ICE_PROT_SCTP_IL = 96, 80 ICE_PROT_ICMP_IL = 98, 81 ICE_PROT_ICMPV6_IL = 100, 82 ICE_PROT_PPPOE = 103, 83 ICE_PROT_L2TPV3 = 104, 84 ICE_PROT_ARP_OF = 118, 85 ICE_PROT_META_ID = 255, /* when offset == metadata */ 86 ICE_PROT_INVALID = 255 /* when offset == ICE_FV_OFFSET_INVAL */ 87 }; 88 89 #define ICE_VNI_OFFSET 12 /* offset of VNI from ICE_PROT_UDP_OF */ 90 91 #define ICE_MAC_OFOS_HW 1 92 #define ICE_MAC_IL_HW 4 93 #define ICE_ETYPE_OL_HW 9 94 #define ICE_VLAN_OF_HW 16 95 #define ICE_VLAN_OL_HW 17 96 #define ICE_IPV4_OFOS_HW 32 97 #define ICE_IPV4_IL_HW 33 98 #define ICE_IPV6_OFOS_HW 40 99 #define ICE_IPV6_IL_HW 41 100 #define ICE_TCP_IL_HW 49 101 #define ICE_UDP_ILOS_HW 53 102 #define ICE_GRE_OF_HW 64 103 104 #define ICE_UDP_OF_HW 52 /* UDP Tunnels */ 105 #define ICE_META_DATA_ID_HW 255 /* this is used for tunnel type */ 106 107 #define ICE_MDID_SIZE 2 108 #define ICE_TUN_FLAG_MDID 21 109 #define ICE_TUN_FLAG_MDID_OFF (ICE_MDID_SIZE * ICE_TUN_FLAG_MDID) 110 #define ICE_TUN_FLAG_MASK 0xFF 111 112 #define ICE_TUN_FLAG_FV_IND 2 113 114 /* Mapping of software defined protocol ID to hardware defined protocol ID */ 115 struct ice_protocol_entry { 116 enum ice_protocol_type type; 117 u8 protocol_id; 118 }; 119 120 struct ice_ether_hdr { 121 u8 dst_addr[ETH_ALEN]; 122 u8 src_addr[ETH_ALEN]; 123 }; 124 125 struct ice_ethtype_hdr { 126 __be16 ethtype_id; 127 }; 128 129 struct ice_ether_vlan_hdr { 130 u8 dst_addr[ETH_ALEN]; 131 u8 src_addr[ETH_ALEN]; 132 __be32 vlan_id; 133 }; 134 135 struct ice_vlan_hdr { 136 __be16 type; 137 __be16 vlan; 138 }; 139 140 struct ice_ipv4_hdr { 141 u8 version; 142 u8 tos; 143 __be16 total_length; 144 __be16 id; 145 __be16 frag_off; 146 u8 time_to_live; 147 u8 protocol; 148 __be16 check; 149 __be32 src_addr; 150 __be32 dst_addr; 151 }; 152 153 struct ice_ipv6_hdr { 154 __be32 be_ver_tc_flow; 155 __be16 payload_len; 156 u8 next_hdr; 157 u8 hop_limit; 158 u8 src_addr[ICE_IPV6_ADDR_LENGTH]; 159 u8 dst_addr[ICE_IPV6_ADDR_LENGTH]; 160 }; 161 162 struct ice_sctp_hdr { 163 __be16 src_port; 164 __be16 dst_port; 165 __be32 verification_tag; 166 __be32 check; 167 }; 168 169 struct ice_l4_hdr { 170 __be16 src_port; 171 __be16 dst_port; 172 __be16 len; 173 __be16 check; 174 }; 175 176 struct ice_udp_tnl_hdr { 177 __be16 field; 178 __be16 proto_type; 179 __be32 vni; /* only use lower 24-bits */ 180 }; 181 182 struct ice_nvgre_hdr { 183 __be16 flags; 184 __be16 protocol; 185 __be32 tni_flow; 186 }; 187 188 union ice_prot_hdr { 189 struct ice_ether_hdr eth_hdr; 190 struct ice_ethtype_hdr ethertype; 191 struct ice_vlan_hdr vlan_hdr; 192 struct ice_ipv4_hdr ipv4_hdr; 193 struct ice_ipv6_hdr ipv6_hdr; 194 struct ice_l4_hdr l4_hdr; 195 struct ice_sctp_hdr sctp_hdr; 196 struct ice_udp_tnl_hdr tnl_hdr; 197 struct ice_nvgre_hdr nvgre_hdr; 198 }; 199 200 /* This is mapping table entry that maps every word within a given protocol 201 * structure to the real byte offset as per the specification of that 202 * protocol header. 203 * for e.g. dst address is 3 words in ethertype header and corresponding bytes 204 * are 0, 2, 3 in the actual packet header and src address is at 4, 6, 8 205 */ 206 struct ice_prot_ext_tbl_entry { 207 enum ice_protocol_type prot_type; 208 /* Byte offset into header of given protocol type */ 209 u8 offs[sizeof(union ice_prot_hdr)]; 210 }; 211 212 /* Extractions to be looked up for a given recipe */ 213 struct ice_prot_lkup_ext { 214 u16 prot_type; 215 u8 n_val_words; 216 /* create a buffer to hold max words per recipe */ 217 u16 field_off[ICE_MAX_CHAIN_WORDS]; 218 u16 field_mask[ICE_MAX_CHAIN_WORDS]; 219 220 struct ice_fv_word fv_words[ICE_MAX_CHAIN_WORDS]; 221 222 /* Indicate field offsets that have field vector indices assigned */ 223 DECLARE_BITMAP(done, ICE_MAX_CHAIN_WORDS); 224 }; 225 226 struct ice_pref_recipe_group { 227 u8 n_val_pairs; /* Number of valid pairs */ 228 struct ice_fv_word pairs[ICE_NUM_WORDS_RECIPE]; 229 u16 mask[ICE_NUM_WORDS_RECIPE]; 230 }; 231 232 struct ice_recp_grp_entry { 233 struct list_head l_entry; 234 235 #define ICE_INVAL_CHAIN_IND 0xFF 236 u16 rid; 237 u8 chain_idx; 238 u16 fv_idx[ICE_NUM_WORDS_RECIPE]; 239 u16 fv_mask[ICE_NUM_WORDS_RECIPE]; 240 struct ice_pref_recipe_group r_group; 241 }; 242 #endif /* _ICE_PROTOCOL_TYPE_H_ */ 243