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_ETYPE_IL, 33 ICE_VLAN_OFOS, 34 ICE_IPV4_OFOS, 35 ICE_IPV4_IL, 36 ICE_IPV6_OFOS, 37 ICE_IPV6_IL, 38 ICE_TCP_IL, 39 ICE_UDP_OF, 40 ICE_UDP_ILOS, 41 ICE_VXLAN, 42 ICE_GENEVE, 43 ICE_NVGRE, 44 ICE_GTP, 45 ICE_GTP_NO_PAY, 46 ICE_PPPOE, 47 ICE_L2TPV3, 48 ICE_VLAN_EX, 49 ICE_VLAN_IN, 50 ICE_HW_METADATA, 51 ICE_VXLAN_GPE, 52 ICE_SCTP_IL, 53 ICE_PROTOCOL_LAST 54 }; 55 56 enum ice_sw_tunnel_type { 57 ICE_NON_TUN = 0, 58 ICE_SW_TUN_AND_NON_TUN, 59 ICE_SW_TUN_VXLAN, 60 ICE_SW_TUN_GENEVE, 61 ICE_SW_TUN_NVGRE, 62 ICE_SW_TUN_GTPU, 63 ICE_SW_TUN_GTPC, 64 ICE_ALL_TUNNELS /* All tunnel types including NVGRE */ 65 }; 66 67 /* Decoders for ice_prot_id: 68 * - F: First 69 * - I: Inner 70 * - L: Last 71 * - O: Outer 72 * - S: Single 73 */ 74 enum ice_prot_id { 75 ICE_PROT_ID_INVAL = 0, 76 ICE_PROT_MAC_OF_OR_S = 1, 77 ICE_PROT_MAC_IL = 4, 78 ICE_PROT_ETYPE_OL = 9, 79 ICE_PROT_ETYPE_IL = 10, 80 ICE_PROT_IPV4_OF_OR_S = 32, 81 ICE_PROT_IPV4_IL = 33, 82 ICE_PROT_IPV6_OF_OR_S = 40, 83 ICE_PROT_IPV6_IL = 41, 84 ICE_PROT_TCP_IL = 49, 85 ICE_PROT_UDP_OF = 52, 86 ICE_PROT_UDP_IL_OR_S = 53, 87 ICE_PROT_GRE_OF = 64, 88 ICE_PROT_ESP_F = 88, 89 ICE_PROT_ESP_2 = 89, 90 ICE_PROT_SCTP_IL = 96, 91 ICE_PROT_ICMP_IL = 98, 92 ICE_PROT_ICMPV6_IL = 100, 93 ICE_PROT_PPPOE = 103, 94 ICE_PROT_L2TPV3 = 104, 95 ICE_PROT_ARP_OF = 118, 96 ICE_PROT_META_ID = 255, /* when offset == metadata */ 97 ICE_PROT_INVALID = 255 /* when offset == ICE_FV_OFFSET_INVAL */ 98 }; 99 100 #define ICE_VNI_OFFSET 12 /* offset of VNI from ICE_PROT_UDP_OF */ 101 102 #define ICE_MAC_OFOS_HW 1 103 #define ICE_MAC_IL_HW 4 104 #define ICE_ETYPE_OL_HW 9 105 #define ICE_ETYPE_IL_HW 10 106 #define ICE_VLAN_OF_HW 16 107 #define ICE_VLAN_OL_HW 17 108 #define ICE_IPV4_OFOS_HW 32 109 #define ICE_IPV4_IL_HW 33 110 #define ICE_IPV6_OFOS_HW 40 111 #define ICE_IPV6_IL_HW 41 112 #define ICE_TCP_IL_HW 49 113 #define ICE_UDP_ILOS_HW 53 114 #define ICE_GRE_OF_HW 64 115 #define ICE_PPPOE_HW 103 116 #define ICE_L2TPV3_HW 104 117 118 #define ICE_UDP_OF_HW 52 /* UDP Tunnels */ 119 120 121 #define ICE_TUN_FLAG_FV_IND 2 122 123 /* Mapping of software defined protocol ID to hardware defined protocol ID */ 124 struct ice_protocol_entry { 125 enum ice_protocol_type type; 126 u8 protocol_id; 127 }; 128 129 struct ice_ether_hdr { 130 u8 dst_addr[ETH_ALEN]; 131 u8 src_addr[ETH_ALEN]; 132 }; 133 134 struct ice_ethtype_hdr { 135 __be16 ethtype_id; 136 }; 137 138 struct ice_ether_vlan_hdr { 139 u8 dst_addr[ETH_ALEN]; 140 u8 src_addr[ETH_ALEN]; 141 __be32 vlan_id; 142 }; 143 144 struct ice_vlan_hdr { 145 __be16 type; 146 __be16 vlan; 147 }; 148 149 struct ice_ipv4_hdr { 150 u8 version; 151 u8 tos; 152 __be16 total_length; 153 __be16 id; 154 __be16 frag_off; 155 u8 time_to_live; 156 u8 protocol; 157 __be16 check; 158 __be32 src_addr; 159 __be32 dst_addr; 160 }; 161 162 struct ice_ipv6_hdr { 163 __be32 be_ver_tc_flow; 164 __be16 payload_len; 165 u8 next_hdr; 166 u8 hop_limit; 167 u8 src_addr[ICE_IPV6_ADDR_LENGTH]; 168 u8 dst_addr[ICE_IPV6_ADDR_LENGTH]; 169 }; 170 171 struct ice_sctp_hdr { 172 __be16 src_port; 173 __be16 dst_port; 174 __be32 verification_tag; 175 __be32 check; 176 }; 177 178 struct ice_l4_hdr { 179 __be16 src_port; 180 __be16 dst_port; 181 __be16 len; 182 __be16 check; 183 }; 184 185 struct ice_udp_tnl_hdr { 186 __be16 field; 187 __be16 proto_type; 188 __be32 vni; /* only use lower 24-bits */ 189 }; 190 191 struct ice_udp_gtp_hdr { 192 u8 flags; 193 u8 msg_type; 194 __be16 rsrvd_len; 195 __be32 teid; 196 __be16 rsrvd_seq_nbr; 197 u8 rsrvd_n_pdu_nbr; 198 u8 rsrvd_next_ext; 199 u8 rsvrd_ext_len; 200 u8 pdu_type; 201 u8 qfi; 202 u8 rsvrd; 203 }; 204 205 struct ice_pppoe_hdr { 206 u8 rsrvd_ver_type; 207 u8 rsrvd_code; 208 __be16 session_id; 209 __be16 length; 210 __be16 ppp_prot_id; /* control and data only */ 211 }; 212 213 struct ice_l2tpv3_sess_hdr { 214 __be32 session_id; 215 __be64 cookie; 216 }; 217 218 struct ice_nvgre_hdr { 219 __be16 flags; 220 __be16 protocol; 221 __be32 tni_flow; 222 }; 223 224 /* Metadata information 225 * 226 * Not all MDIDs can be used by switch block. It depends on package version. 227 * 228 * MDID 16 (Rx offset) 229 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 230 * | A | B | Reserved | 231 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 232 * 233 * A = Source port where the transaction came from (3b). 234 * 235 * B = Destination TC of the packet. The TC is relative to a port (5b). 236 * 237 * MDID 17 238 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 239 * | PTYPE | Reserved | 240 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 241 * 242 * PTYPE = Encodes the packet type (10b). 243 * 244 * MDID 18 245 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 246 * | Packet length | R | 247 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 248 * 249 * Packet length = Length of the packet in bytes 250 * (packet always carriers CRC) (14b). 251 * R = Reserved (2b). 252 * 253 * MDID 19 254 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 255 * | Source VSI | Reserved | 256 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 257 * 258 * Source VSI = Source VSI of packet loopbacked in switch (for egress) (10b). 259 */ 260 #define ICE_MDID_SOURCE_VSI_MASK GENMASK(9, 0) 261 262 /* 263 * MDID 20 264 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 265 * |A|B|C|D|E|F|R|R|G|H|I|J|K|L|M|N| 266 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 267 * 268 * A = DSI - set for DSI RX pkts. 269 * B = ipsec_decrypted - invalid on NIC. 270 * C = marker - this is a marker packet. 271 * D = from_network - for TX sets to 0 272 * for RX: 273 * * 1 - packet is from external link 274 * * 0 - packet source is from internal 275 * E = source_interface_is_rx - reflect the physical interface from where the 276 * packet was received: 277 * * 1 - Rx 278 * * 0 - Tx 279 * F = from_mng - The bit signals that the packet's origin is the management. 280 * G = ucast - Outer L2 MAC address is unicast. 281 * H = mcast - Outer L2 MAC address is multicast. 282 * I = bcast - Outer L2 MAC address is broadcast. 283 * J = second_outer_mac_present - 2 outer MAC headers are present in the packet. 284 * K = STAG or BVLAN - Outer L2 header has STAG (ethernet type 0x88a8) or 285 * BVLAN (ethernet type 0x88a8). 286 * L = ITAG - Outer L2 header has ITAG *ethernet type 0x88e7) 287 * M = EVLAN (0x8100) - Outer L2 header has EVLAN (ethernet type 0x8100) 288 * N = EVLAN (0x9100) - Outer L2 header has EVLAN (ethernet type 0x9100) 289 */ 290 #define ICE_PKT_FROM_NETWORK BIT(3) 291 #define ICE_PKT_VLAN_STAG BIT(12) 292 #define ICE_PKT_VLAN_ITAG BIT(13) 293 #define ICE_PKT_VLAN_EVLAN (BIT(14) | BIT(15)) 294 #define ICE_PKT_VLAN_MASK (ICE_PKT_VLAN_STAG | ICE_PKT_VLAN_ITAG | \ 295 ICE_PKT_VLAN_EVLAN) 296 /* MDID 21 297 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 298 * |A|B|C|D|E|F|G|H|I|J|R|R|K|L|M|N| 299 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 300 * 301 * A = VLAN (0x8100) - Outer L2 header has VLAN (ethernet type 0x8100) 302 * B = NSHoE - Outer L2 header has NSH (ethernet type 0x894f) 303 * C = MPLS (0x8847) - There is at least 1 MPLS tag in the outer header 304 * (ethernet type 0x8847) 305 * D = MPLS (0x8848) - There is at least 1 MPLS tag in the outer header 306 * (ethernet type 0x8848) 307 * E = multi MPLS - There is more than a single MPLS tag in the outer header 308 * F = inner MPLS - There is inner MPLS tag in the packet 309 * G = tunneled MAC - Set if the packet includes a tunneled MAC 310 * H = tunneled VLAN - Same as VLAN, but for a tunneled header 311 * I = pkt_is_frag - Packet is fragmented (ipv4 or ipv6) 312 * J = ipv6_ext - The packet has routing or destination ipv6 extension in inner 313 * or outer ipv6 headers 314 * K = RoCE - UDP packet detected as RoCEv2 315 * L = UDP_XSUM_0 - Set to 1 if L4 checksum is 0 in a UDP packet 316 * M = ESP - This is a ESP packet 317 * N = NAT_ESP - This is a ESP packet encapsulated in UDP NAT 318 */ 319 #define ICE_PKT_TUNNEL_MAC BIT(6) 320 #define ICE_PKT_TUNNEL_VLAN BIT(7) 321 #define ICE_PKT_TUNNEL_MASK (ICE_PKT_TUNNEL_MAC | ICE_PKT_TUNNEL_VLAN) 322 323 /* MDID 22 324 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 325 * |A|B|C|D|E|F| G |H|I|J| K |L|M| 326 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 327 * 328 * A = fin - fin flag in tcp header 329 * B = sync - sync flag in tcp header 330 * C = rst - rst flag in tcp header 331 * D = psh - psh flag in tcp header 332 * E = ack - ack flag in tcp header 333 * F = urg - urg flag in tcp header 334 * G = tunnel type (3b) - Flags used to decode tunnel type: 335 * * b000 - not a VXLAN/Geneve/GRE tunnel 336 * * b001 - VXLAN-GPE 337 * * b010 - VXLAN (non-GPE) 338 * * b011 - Geneve 339 * * b100 - GRE (no key, no xsum) 340 * * b101 - GREK (key, no xsum) 341 * * b110 - GREC (no key, xsum) 342 * * b111 - GREKC (key, xsum) 343 * H = UDP_GRE - Packet is UDP (VXLAN or VLAN_GPE or Geneve or MPLSoUDP or GRE) 344 * tunnel 345 * I = OAM - VXLAN/Geneve/tunneled NSH packet with the OAM bit set 346 * J = tunneled NSH - Packet has NSHoGRE or NSHoUDP 347 * K = switch (2b) - Direction on switch 348 * * b00 - normal 349 * * b01 - TX force only LAN 350 * * b10 - TX disable LAN 351 * * b11 - direct to VSI 352 * L = swpe - Represents SWPE bit in TX command 353 * M = sw_cmd - Switch command 354 * 355 * MDID 23 356 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 357 * |A|B|C|D| R |E|F|R| 358 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 359 * 360 * A = MAC error - Produced by MAC according to L2 error conditions 361 * B = PPRS no offload - FIFO overflow in PPRS or any problematic condition in 362 * PPRS ANA 363 * C = abort - Set when malicious packet is detected 364 * D = partial analysis - ANA's analysing got cut in the middle 365 * (header > 504B etc.) 366 * E = FLM - Flow director hit indication 367 * F = FDLONG - Flow direector long bucket indication 368 * 369 */ 370 #define ICE_MDID_SIZE 2 371 #define ICE_META_DATA_ID_HW 255 372 373 enum ice_hw_metadata_id { 374 ICE_SOURCE_PORT_MDID = 16, 375 ICE_PTYPE_MDID = 17, 376 ICE_PACKET_LENGTH_MDID = 18, 377 ICE_SOURCE_VSI_MDID = 19, 378 ICE_PKT_VLAN_MDID = 20, 379 ICE_PKT_TUNNEL_MDID = 21, 380 ICE_PKT_TCP_MDID = 22, 381 ICE_PKT_ERROR_MDID = 23, 382 }; 383 384 enum ice_hw_metadata_offset { 385 ICE_SOURCE_PORT_MDID_OFFSET = ICE_MDID_SIZE * ICE_SOURCE_PORT_MDID, 386 ICE_PTYPE_MDID_OFFSET = ICE_MDID_SIZE * ICE_PTYPE_MDID, 387 ICE_PACKET_LENGTH_MDID_OFFSET = ICE_MDID_SIZE * ICE_PACKET_LENGTH_MDID, 388 ICE_SOURCE_VSI_MDID_OFFSET = ICE_MDID_SIZE * ICE_SOURCE_VSI_MDID, 389 ICE_PKT_VLAN_MDID_OFFSET = ICE_MDID_SIZE * ICE_PKT_VLAN_MDID, 390 ICE_PKT_TUNNEL_MDID_OFFSET = ICE_MDID_SIZE * ICE_PKT_TUNNEL_MDID, 391 ICE_PKT_TCP_MDID_OFFSET = ICE_MDID_SIZE * ICE_PKT_TCP_MDID, 392 ICE_PKT_ERROR_MDID_OFFSET = ICE_MDID_SIZE * ICE_PKT_ERROR_MDID, 393 }; 394 395 enum ice_pkt_flags { 396 ICE_PKT_FLAGS_MDID20 = 0, 397 ICE_PKT_FLAGS_MDID21 = 1, 398 ICE_PKT_FLAGS_MDID22 = 2, 399 ICE_PKT_FLAGS_MDID23 = 3, 400 }; 401 402 struct ice_hw_metadata { 403 __be16 source_port; 404 __be16 ptype; 405 __be16 packet_length; 406 __be16 source_vsi; 407 __be16 flags[4]; 408 }; 409 410 union ice_prot_hdr { 411 struct ice_ether_hdr eth_hdr; 412 struct ice_ethtype_hdr ethertype; 413 struct ice_vlan_hdr vlan_hdr; 414 struct ice_ipv4_hdr ipv4_hdr; 415 struct ice_ipv6_hdr ipv6_hdr; 416 struct ice_l4_hdr l4_hdr; 417 struct ice_sctp_hdr sctp_hdr; 418 struct ice_udp_tnl_hdr tnl_hdr; 419 struct ice_nvgre_hdr nvgre_hdr; 420 struct ice_udp_gtp_hdr gtp_hdr; 421 struct ice_pppoe_hdr pppoe_hdr; 422 struct ice_l2tpv3_sess_hdr l2tpv3_sess_hdr; 423 struct ice_hw_metadata metadata; 424 }; 425 426 /* This is mapping table entry that maps every word within a given protocol 427 * structure to the real byte offset as per the specification of that 428 * protocol header. 429 * for e.g. dst address is 3 words in ethertype header and corresponding bytes 430 * are 0, 2, 3 in the actual packet header and src address is at 4, 6, 8 431 */ 432 struct ice_prot_ext_tbl_entry { 433 enum ice_protocol_type prot_type; 434 /* Byte offset into header of given protocol type */ 435 u8 offs[sizeof(union ice_prot_hdr)]; 436 }; 437 438 /* Extractions to be looked up for a given recipe */ 439 struct ice_prot_lkup_ext { 440 u16 prot_type; 441 u8 n_val_words; 442 /* create a buffer to hold max words per recipe */ 443 u16 field_off[ICE_MAX_CHAIN_WORDS]; 444 u16 field_mask[ICE_MAX_CHAIN_WORDS]; 445 446 struct ice_fv_word fv_words[ICE_MAX_CHAIN_WORDS]; 447 448 /* Indicate field offsets that have field vector indices assigned */ 449 DECLARE_BITMAP(done, ICE_MAX_CHAIN_WORDS); 450 }; 451 452 struct ice_pref_recipe_group { 453 u8 n_val_pairs; /* Number of valid pairs */ 454 struct ice_fv_word pairs[ICE_NUM_WORDS_RECIPE]; 455 u16 mask[ICE_NUM_WORDS_RECIPE]; 456 }; 457 458 struct ice_recp_grp_entry { 459 struct list_head l_entry; 460 461 #define ICE_INVAL_CHAIN_IND 0xFF 462 u16 rid; 463 u8 chain_idx; 464 u16 fv_idx[ICE_NUM_WORDS_RECIPE]; 465 u16 fv_mask[ICE_NUM_WORDS_RECIPE]; 466 struct ice_pref_recipe_group r_group; 467 }; 468 #endif /* _ICE_PROTOCOL_TYPE_H_ */ 469