1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019, Intel Corporation. */ 3 4 #include "ice_common.h" 5 #include "ice_flow.h" 6 7 /* Describe properties of a protocol header field */ 8 struct ice_flow_field_info { 9 enum ice_flow_seg_hdr hdr; 10 s16 off; /* Offset from start of a protocol header, in bits */ 11 u16 size; /* Size of fields in bits */ 12 }; 13 14 #define ICE_FLOW_FLD_INFO(_hdr, _offset_bytes, _size_bytes) { \ 15 .hdr = _hdr, \ 16 .off = (_offset_bytes) * BITS_PER_BYTE, \ 17 .size = (_size_bytes) * BITS_PER_BYTE, \ 18 } 19 20 /* Table containing properties of supported protocol header fields */ 21 static const 22 struct ice_flow_field_info ice_flds_info[ICE_FLOW_FIELD_IDX_MAX] = { 23 /* IPv4 / IPv6 */ 24 /* ICE_FLOW_FIELD_IDX_IPV4_SA */ 25 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_IPV4, 12, sizeof(struct in_addr)), 26 /* ICE_FLOW_FIELD_IDX_IPV4_DA */ 27 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_IPV4, 16, sizeof(struct in_addr)), 28 /* ICE_FLOW_FIELD_IDX_IPV6_SA */ 29 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_IPV6, 8, sizeof(struct in6_addr)), 30 /* ICE_FLOW_FIELD_IDX_IPV6_DA */ 31 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_IPV6, 24, sizeof(struct in6_addr)), 32 /* Transport */ 33 /* ICE_FLOW_FIELD_IDX_TCP_SRC_PORT */ 34 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_TCP, 0, sizeof(__be16)), 35 /* ICE_FLOW_FIELD_IDX_TCP_DST_PORT */ 36 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_TCP, 2, sizeof(__be16)), 37 /* ICE_FLOW_FIELD_IDX_UDP_SRC_PORT */ 38 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_UDP, 0, sizeof(__be16)), 39 /* ICE_FLOW_FIELD_IDX_UDP_DST_PORT */ 40 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_UDP, 2, sizeof(__be16)), 41 /* ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT */ 42 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_SCTP, 0, sizeof(__be16)), 43 /* ICE_FLOW_FIELD_IDX_SCTP_DST_PORT */ 44 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_SCTP, 2, sizeof(__be16)), 45 /* GRE */ 46 /* ICE_FLOW_FIELD_IDX_GRE_KEYID */ 47 ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_GRE, 12, 48 sizeof_field(struct gre_full_hdr, key)), 49 }; 50 51 /* Bitmaps indicating relevant packet types for a particular protocol header 52 * 53 * Packet types for packets with an Outer/First/Single IPv4 header 54 */ 55 static const u32 ice_ptypes_ipv4_ofos[] = { 56 0x1DC00000, 0x04000800, 0x00000000, 0x00000000, 57 0x00000000, 0x00000000, 0x00000000, 0x00000000, 58 0x00000000, 0x00000000, 0x00000000, 0x00000000, 59 0x00000000, 0x00000000, 0x00000000, 0x00000000, 60 0x00000000, 0x00000000, 0x00000000, 0x00000000, 61 0x00000000, 0x00000000, 0x00000000, 0x00000000, 62 0x00000000, 0x00000000, 0x00000000, 0x00000000, 63 0x00000000, 0x00000000, 0x00000000, 0x00000000, 64 }; 65 66 /* Packet types for packets with an Innermost/Last IPv4 header */ 67 static const u32 ice_ptypes_ipv4_il[] = { 68 0xE0000000, 0xB807700E, 0x80000003, 0xE01DC03B, 69 0x0000000E, 0x00000000, 0x00000000, 0x00000000, 70 0x00000000, 0x00000000, 0x00000000, 0x00000000, 71 0x00000000, 0x00000000, 0x00000000, 0x00000000, 72 0x00000000, 0x00000000, 0x00000000, 0x00000000, 73 0x00000000, 0x00000000, 0x00000000, 0x00000000, 74 0x00000000, 0x00000000, 0x00000000, 0x00000000, 75 0x00000000, 0x00000000, 0x00000000, 0x00000000, 76 }; 77 78 /* Packet types for packets with an Outer/First/Single IPv6 header */ 79 static const u32 ice_ptypes_ipv6_ofos[] = { 80 0x00000000, 0x00000000, 0x77000000, 0x10002000, 81 0x00000000, 0x00000000, 0x00000000, 0x00000000, 82 0x00000000, 0x00000000, 0x00000000, 0x00000000, 83 0x00000000, 0x00000000, 0x00000000, 0x00000000, 84 0x00000000, 0x00000000, 0x00000000, 0x00000000, 85 0x00000000, 0x00000000, 0x00000000, 0x00000000, 86 0x00000000, 0x00000000, 0x00000000, 0x00000000, 87 0x00000000, 0x00000000, 0x00000000, 0x00000000, 88 }; 89 90 /* Packet types for packets with an Innermost/Last IPv6 header */ 91 static const u32 ice_ptypes_ipv6_il[] = { 92 0x00000000, 0x03B80770, 0x000001DC, 0x0EE00000, 93 0x00000770, 0x00000000, 0x00000000, 0x00000000, 94 0x00000000, 0x00000000, 0x00000000, 0x00000000, 95 0x00000000, 0x00000000, 0x00000000, 0x00000000, 96 0x00000000, 0x00000000, 0x00000000, 0x00000000, 97 0x00000000, 0x00000000, 0x00000000, 0x00000000, 98 0x00000000, 0x00000000, 0x00000000, 0x00000000, 99 0x00000000, 0x00000000, 0x00000000, 0x00000000, 100 }; 101 102 /* Packet types for packets with an Outer/First/Single IPv4 header - no L4 */ 103 static const u32 ice_ipv4_ofos_no_l4[] = { 104 0x10C00000, 0x04000800, 0x00000000, 0x00000000, 105 0x00000000, 0x00000000, 0x00000000, 0x00000000, 106 0x00000000, 0x00000000, 0x00000000, 0x00000000, 107 0x00000000, 0x00000000, 0x00000000, 0x00000000, 108 0x00000000, 0x00000000, 0x00000000, 0x00000000, 109 0x00000000, 0x00000000, 0x00000000, 0x00000000, 110 0x00000000, 0x00000000, 0x00000000, 0x00000000, 111 0x00000000, 0x00000000, 0x00000000, 0x00000000, 112 }; 113 114 /* Packet types for packets with an Innermost/Last IPv4 header - no L4 */ 115 static const u32 ice_ipv4_il_no_l4[] = { 116 0x60000000, 0x18043008, 0x80000002, 0x6010c021, 117 0x00000008, 0x00000000, 0x00000000, 0x00000000, 118 0x00000000, 0x00000000, 0x00000000, 0x00000000, 119 0x00000000, 0x00000000, 0x00000000, 0x00000000, 120 0x00000000, 0x00000000, 0x00000000, 0x00000000, 121 0x00000000, 0x00000000, 0x00000000, 0x00000000, 122 0x00000000, 0x00000000, 0x00000000, 0x00000000, 123 0x00000000, 0x00000000, 0x00000000, 0x00000000, 124 }; 125 126 /* Packet types for packets with an Outer/First/Single IPv6 header - no L4 */ 127 static const u32 ice_ipv6_ofos_no_l4[] = { 128 0x00000000, 0x00000000, 0x43000000, 0x10002000, 129 0x00000000, 0x00000000, 0x00000000, 0x00000000, 130 0x00000000, 0x00000000, 0x00000000, 0x00000000, 131 0x00000000, 0x00000000, 0x00000000, 0x00000000, 132 0x00000000, 0x00000000, 0x00000000, 0x00000000, 133 0x00000000, 0x00000000, 0x00000000, 0x00000000, 134 0x00000000, 0x00000000, 0x00000000, 0x00000000, 135 0x00000000, 0x00000000, 0x00000000, 0x00000000, 136 }; 137 138 /* Packet types for packets with an Innermost/Last IPv6 header - no L4 */ 139 static const u32 ice_ipv6_il_no_l4[] = { 140 0x00000000, 0x02180430, 0x0000010c, 0x086010c0, 141 0x00000430, 0x00000000, 0x00000000, 0x00000000, 142 0x00000000, 0x00000000, 0x00000000, 0x00000000, 143 0x00000000, 0x00000000, 0x00000000, 0x00000000, 144 0x00000000, 0x00000000, 0x00000000, 0x00000000, 145 0x00000000, 0x00000000, 0x00000000, 0x00000000, 146 0x00000000, 0x00000000, 0x00000000, 0x00000000, 147 0x00000000, 0x00000000, 0x00000000, 0x00000000, 148 }; 149 150 /* UDP Packet types for non-tunneled packets or tunneled 151 * packets with inner UDP. 152 */ 153 static const u32 ice_ptypes_udp_il[] = { 154 0x81000000, 0x20204040, 0x04000010, 0x80810102, 155 0x00000040, 0x00000000, 0x00000000, 0x00000000, 156 0x00000000, 0x00000000, 0x00000000, 0x00000000, 157 0x00000000, 0x00000000, 0x00000000, 0x00000000, 158 0x00000000, 0x00000000, 0x00000000, 0x00000000, 159 0x00000000, 0x00000000, 0x00000000, 0x00000000, 160 0x00000000, 0x00000000, 0x00000000, 0x00000000, 161 0x00000000, 0x00000000, 0x00000000, 0x00000000, 162 }; 163 164 /* Packet types for packets with an Innermost/Last TCP header */ 165 static const u32 ice_ptypes_tcp_il[] = { 166 0x04000000, 0x80810102, 0x10000040, 0x02040408, 167 0x00000102, 0x00000000, 0x00000000, 0x00000000, 168 0x00000000, 0x00000000, 0x00000000, 0x00000000, 169 0x00000000, 0x00000000, 0x00000000, 0x00000000, 170 0x00000000, 0x00000000, 0x00000000, 0x00000000, 171 0x00000000, 0x00000000, 0x00000000, 0x00000000, 172 0x00000000, 0x00000000, 0x00000000, 0x00000000, 173 0x00000000, 0x00000000, 0x00000000, 0x00000000, 174 }; 175 176 /* Packet types for packets with an Innermost/Last SCTP header */ 177 static const u32 ice_ptypes_sctp_il[] = { 178 0x08000000, 0x01020204, 0x20000081, 0x04080810, 179 0x00000204, 0x00000000, 0x00000000, 0x00000000, 180 0x00000000, 0x00000000, 0x00000000, 0x00000000, 181 0x00000000, 0x00000000, 0x00000000, 0x00000000, 182 0x00000000, 0x00000000, 0x00000000, 0x00000000, 183 0x00000000, 0x00000000, 0x00000000, 0x00000000, 184 0x00000000, 0x00000000, 0x00000000, 0x00000000, 185 0x00000000, 0x00000000, 0x00000000, 0x00000000, 186 }; 187 188 /* Packet types for packets with an Outermost/First GRE header */ 189 static const u32 ice_ptypes_gre_of[] = { 190 0x00000000, 0xBFBF7800, 0x000001DF, 0xFEFDE000, 191 0x0000017E, 0x00000000, 0x00000000, 0x00000000, 192 0x00000000, 0x00000000, 0x00000000, 0x00000000, 193 0x00000000, 0x00000000, 0x00000000, 0x00000000, 194 0x00000000, 0x00000000, 0x00000000, 0x00000000, 195 0x00000000, 0x00000000, 0x00000000, 0x00000000, 196 0x00000000, 0x00000000, 0x00000000, 0x00000000, 197 0x00000000, 0x00000000, 0x00000000, 0x00000000, 198 }; 199 200 /* Manage parameters and info. used during the creation of a flow profile */ 201 struct ice_flow_prof_params { 202 enum ice_block blk; 203 u16 entry_length; /* # of bytes formatted entry will require */ 204 u8 es_cnt; 205 struct ice_flow_prof *prof; 206 207 /* For ACL, the es[0] will have the data of ICE_RX_MDID_PKT_FLAGS_15_0 208 * This will give us the direction flags. 209 */ 210 struct ice_fv_word es[ICE_MAX_FV_WORDS]; 211 DECLARE_BITMAP(ptypes, ICE_FLOW_PTYPE_MAX); 212 }; 213 214 #define ICE_FLOW_SEG_HDRS_L3_MASK \ 215 (ICE_FLOW_SEG_HDR_IPV4 | ICE_FLOW_SEG_HDR_IPV6) 216 #define ICE_FLOW_SEG_HDRS_L4_MASK \ 217 (ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_SCTP) 218 219 /** 220 * ice_flow_val_hdrs - validates packet segments for valid protocol headers 221 * @segs: array of one or more packet segments that describe the flow 222 * @segs_cnt: number of packet segments provided 223 */ 224 static enum ice_status 225 ice_flow_val_hdrs(struct ice_flow_seg_info *segs, u8 segs_cnt) 226 { 227 u8 i; 228 229 for (i = 0; i < segs_cnt; i++) { 230 /* Multiple L3 headers */ 231 if (segs[i].hdrs & ICE_FLOW_SEG_HDRS_L3_MASK && 232 !is_power_of_2(segs[i].hdrs & ICE_FLOW_SEG_HDRS_L3_MASK)) 233 return ICE_ERR_PARAM; 234 235 /* Multiple L4 headers */ 236 if (segs[i].hdrs & ICE_FLOW_SEG_HDRS_L4_MASK && 237 !is_power_of_2(segs[i].hdrs & ICE_FLOW_SEG_HDRS_L4_MASK)) 238 return ICE_ERR_PARAM; 239 } 240 241 return 0; 242 } 243 244 /* Sizes of fixed known protocol headers without header options */ 245 #define ICE_FLOW_PROT_HDR_SZ_MAC 14 246 #define ICE_FLOW_PROT_HDR_SZ_IPV4 20 247 #define ICE_FLOW_PROT_HDR_SZ_IPV6 40 248 #define ICE_FLOW_PROT_HDR_SZ_TCP 20 249 #define ICE_FLOW_PROT_HDR_SZ_UDP 8 250 #define ICE_FLOW_PROT_HDR_SZ_SCTP 12 251 252 /** 253 * ice_flow_calc_seg_sz - calculates size of a packet segment based on headers 254 * @params: information about the flow to be processed 255 * @seg: index of packet segment whose header size is to be determined 256 */ 257 static u16 ice_flow_calc_seg_sz(struct ice_flow_prof_params *params, u8 seg) 258 { 259 u16 sz = ICE_FLOW_PROT_HDR_SZ_MAC; 260 261 /* L3 headers */ 262 if (params->prof->segs[seg].hdrs & ICE_FLOW_SEG_HDR_IPV4) 263 sz += ICE_FLOW_PROT_HDR_SZ_IPV4; 264 else if (params->prof->segs[seg].hdrs & ICE_FLOW_SEG_HDR_IPV6) 265 sz += ICE_FLOW_PROT_HDR_SZ_IPV6; 266 267 /* L4 headers */ 268 if (params->prof->segs[seg].hdrs & ICE_FLOW_SEG_HDR_TCP) 269 sz += ICE_FLOW_PROT_HDR_SZ_TCP; 270 else if (params->prof->segs[seg].hdrs & ICE_FLOW_SEG_HDR_UDP) 271 sz += ICE_FLOW_PROT_HDR_SZ_UDP; 272 else if (params->prof->segs[seg].hdrs & ICE_FLOW_SEG_HDR_SCTP) 273 sz += ICE_FLOW_PROT_HDR_SZ_SCTP; 274 275 return sz; 276 } 277 278 /** 279 * ice_flow_proc_seg_hdrs - process protocol headers present in pkt segments 280 * @params: information about the flow to be processed 281 * 282 * This function identifies the packet types associated with the protocol 283 * headers being present in packet segments of the specified flow profile. 284 */ 285 static enum ice_status 286 ice_flow_proc_seg_hdrs(struct ice_flow_prof_params *params) 287 { 288 struct ice_flow_prof *prof; 289 u8 i; 290 291 memset(params->ptypes, 0xff, sizeof(params->ptypes)); 292 293 prof = params->prof; 294 295 for (i = 0; i < params->prof->segs_cnt; i++) { 296 const unsigned long *src; 297 u32 hdrs; 298 299 hdrs = prof->segs[i].hdrs; 300 301 if ((hdrs & ICE_FLOW_SEG_HDR_IPV4) && 302 !(hdrs & ICE_FLOW_SEG_HDRS_L4_MASK)) { 303 src = !i ? (const unsigned long *)ice_ipv4_ofos_no_l4 : 304 (const unsigned long *)ice_ipv4_il_no_l4; 305 bitmap_and(params->ptypes, params->ptypes, src, 306 ICE_FLOW_PTYPE_MAX); 307 } else if (hdrs & ICE_FLOW_SEG_HDR_IPV4) { 308 src = !i ? (const unsigned long *)ice_ptypes_ipv4_ofos : 309 (const unsigned long *)ice_ptypes_ipv4_il; 310 bitmap_and(params->ptypes, params->ptypes, src, 311 ICE_FLOW_PTYPE_MAX); 312 } else if ((hdrs & ICE_FLOW_SEG_HDR_IPV6) && 313 !(hdrs & ICE_FLOW_SEG_HDRS_L4_MASK)) { 314 src = !i ? (const unsigned long *)ice_ipv6_ofos_no_l4 : 315 (const unsigned long *)ice_ipv6_il_no_l4; 316 bitmap_and(params->ptypes, params->ptypes, src, 317 ICE_FLOW_PTYPE_MAX); 318 } else if (hdrs & ICE_FLOW_SEG_HDR_IPV6) { 319 src = !i ? (const unsigned long *)ice_ptypes_ipv6_ofos : 320 (const unsigned long *)ice_ptypes_ipv6_il; 321 bitmap_and(params->ptypes, params->ptypes, src, 322 ICE_FLOW_PTYPE_MAX); 323 } 324 325 if (hdrs & ICE_FLOW_SEG_HDR_UDP) { 326 src = (const unsigned long *)ice_ptypes_udp_il; 327 bitmap_and(params->ptypes, params->ptypes, src, 328 ICE_FLOW_PTYPE_MAX); 329 } else if (hdrs & ICE_FLOW_SEG_HDR_TCP) { 330 bitmap_and(params->ptypes, params->ptypes, 331 (const unsigned long *)ice_ptypes_tcp_il, 332 ICE_FLOW_PTYPE_MAX); 333 } else if (hdrs & ICE_FLOW_SEG_HDR_SCTP) { 334 src = (const unsigned long *)ice_ptypes_sctp_il; 335 bitmap_and(params->ptypes, params->ptypes, src, 336 ICE_FLOW_PTYPE_MAX); 337 } else if (hdrs & ICE_FLOW_SEG_HDR_GRE) { 338 if (!i) { 339 src = (const unsigned long *)ice_ptypes_gre_of; 340 bitmap_and(params->ptypes, params->ptypes, 341 src, ICE_FLOW_PTYPE_MAX); 342 } 343 } 344 } 345 346 return 0; 347 } 348 349 /** 350 * ice_flow_xtract_fld - Create an extraction sequence entry for the given field 351 * @hw: pointer to the HW struct 352 * @params: information about the flow to be processed 353 * @seg: packet segment index of the field to be extracted 354 * @fld: ID of field to be extracted 355 * 356 * This function determines the protocol ID, offset, and size of the given 357 * field. It then allocates one or more extraction sequence entries for the 358 * given field, and fill the entries with protocol ID and offset information. 359 */ 360 static enum ice_status 361 ice_flow_xtract_fld(struct ice_hw *hw, struct ice_flow_prof_params *params, 362 u8 seg, enum ice_flow_field fld) 363 { 364 enum ice_prot_id prot_id = ICE_PROT_ID_INVAL; 365 u8 fv_words = hw->blk[params->blk].es.fvw; 366 struct ice_flow_fld_info *flds; 367 u16 cnt, ese_bits, i; 368 u16 off; 369 370 flds = params->prof->segs[seg].fields; 371 372 switch (fld) { 373 case ICE_FLOW_FIELD_IDX_IPV4_SA: 374 case ICE_FLOW_FIELD_IDX_IPV4_DA: 375 prot_id = seg == 0 ? ICE_PROT_IPV4_OF_OR_S : ICE_PROT_IPV4_IL; 376 break; 377 case ICE_FLOW_FIELD_IDX_IPV6_SA: 378 case ICE_FLOW_FIELD_IDX_IPV6_DA: 379 prot_id = seg == 0 ? ICE_PROT_IPV6_OF_OR_S : ICE_PROT_IPV6_IL; 380 break; 381 case ICE_FLOW_FIELD_IDX_TCP_SRC_PORT: 382 case ICE_FLOW_FIELD_IDX_TCP_DST_PORT: 383 prot_id = ICE_PROT_TCP_IL; 384 break; 385 case ICE_FLOW_FIELD_IDX_UDP_SRC_PORT: 386 case ICE_FLOW_FIELD_IDX_UDP_DST_PORT: 387 prot_id = ICE_PROT_UDP_IL_OR_S; 388 break; 389 case ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT: 390 case ICE_FLOW_FIELD_IDX_SCTP_DST_PORT: 391 prot_id = ICE_PROT_SCTP_IL; 392 break; 393 case ICE_FLOW_FIELD_IDX_GRE_KEYID: 394 prot_id = ICE_PROT_GRE_OF; 395 break; 396 default: 397 return ICE_ERR_NOT_IMPL; 398 } 399 400 /* Each extraction sequence entry is a word in size, and extracts a 401 * word-aligned offset from a protocol header. 402 */ 403 ese_bits = ICE_FLOW_FV_EXTRACT_SZ * BITS_PER_BYTE; 404 405 flds[fld].xtrct.prot_id = prot_id; 406 flds[fld].xtrct.off = (ice_flds_info[fld].off / ese_bits) * 407 ICE_FLOW_FV_EXTRACT_SZ; 408 flds[fld].xtrct.disp = (u8)(ice_flds_info[fld].off % ese_bits); 409 flds[fld].xtrct.idx = params->es_cnt; 410 411 /* Adjust the next field-entry index after accommodating the number of 412 * entries this field consumes 413 */ 414 cnt = DIV_ROUND_UP(flds[fld].xtrct.disp + ice_flds_info[fld].size, 415 ese_bits); 416 417 /* Fill in the extraction sequence entries needed for this field */ 418 off = flds[fld].xtrct.off; 419 for (i = 0; i < cnt; i++) { 420 u8 idx; 421 422 /* Make sure the number of extraction sequence required 423 * does not exceed the block's capability 424 */ 425 if (params->es_cnt >= fv_words) 426 return ICE_ERR_MAX_LIMIT; 427 428 /* some blocks require a reversed field vector layout */ 429 if (hw->blk[params->blk].es.reverse) 430 idx = fv_words - params->es_cnt - 1; 431 else 432 idx = params->es_cnt; 433 434 params->es[idx].prot_id = prot_id; 435 params->es[idx].off = off; 436 params->es_cnt++; 437 438 off += ICE_FLOW_FV_EXTRACT_SZ; 439 } 440 441 return 0; 442 } 443 444 /** 445 * ice_flow_xtract_raws - Create extract sequence entries for raw bytes 446 * @hw: pointer to the HW struct 447 * @params: information about the flow to be processed 448 * @seg: index of packet segment whose raw fields are to be extracted 449 */ 450 static enum ice_status 451 ice_flow_xtract_raws(struct ice_hw *hw, struct ice_flow_prof_params *params, 452 u8 seg) 453 { 454 u16 fv_words; 455 u16 hdrs_sz; 456 u8 i; 457 458 if (!params->prof->segs[seg].raws_cnt) 459 return 0; 460 461 if (params->prof->segs[seg].raws_cnt > 462 ARRAY_SIZE(params->prof->segs[seg].raws)) 463 return ICE_ERR_MAX_LIMIT; 464 465 /* Offsets within the segment headers are not supported */ 466 hdrs_sz = ice_flow_calc_seg_sz(params, seg); 467 if (!hdrs_sz) 468 return ICE_ERR_PARAM; 469 470 fv_words = hw->blk[params->blk].es.fvw; 471 472 for (i = 0; i < params->prof->segs[seg].raws_cnt; i++) { 473 struct ice_flow_seg_fld_raw *raw; 474 u16 off, cnt, j; 475 476 raw = ¶ms->prof->segs[seg].raws[i]; 477 478 /* Storing extraction information */ 479 raw->info.xtrct.prot_id = ICE_PROT_MAC_OF_OR_S; 480 raw->info.xtrct.off = (raw->off / ICE_FLOW_FV_EXTRACT_SZ) * 481 ICE_FLOW_FV_EXTRACT_SZ; 482 raw->info.xtrct.disp = (raw->off % ICE_FLOW_FV_EXTRACT_SZ) * 483 BITS_PER_BYTE; 484 raw->info.xtrct.idx = params->es_cnt; 485 486 /* Determine the number of field vector entries this raw field 487 * consumes. 488 */ 489 cnt = DIV_ROUND_UP(raw->info.xtrct.disp + 490 (raw->info.src.last * BITS_PER_BYTE), 491 (ICE_FLOW_FV_EXTRACT_SZ * BITS_PER_BYTE)); 492 off = raw->info.xtrct.off; 493 for (j = 0; j < cnt; j++) { 494 u16 idx; 495 496 /* Make sure the number of extraction sequence required 497 * does not exceed the block's capability 498 */ 499 if (params->es_cnt >= hw->blk[params->blk].es.count || 500 params->es_cnt >= ICE_MAX_FV_WORDS) 501 return ICE_ERR_MAX_LIMIT; 502 503 /* some blocks require a reversed field vector layout */ 504 if (hw->blk[params->blk].es.reverse) 505 idx = fv_words - params->es_cnt - 1; 506 else 507 idx = params->es_cnt; 508 509 params->es[idx].prot_id = raw->info.xtrct.prot_id; 510 params->es[idx].off = off; 511 params->es_cnt++; 512 off += ICE_FLOW_FV_EXTRACT_SZ; 513 } 514 } 515 516 return 0; 517 } 518 519 /** 520 * ice_flow_create_xtrct_seq - Create an extraction sequence for given segments 521 * @hw: pointer to the HW struct 522 * @params: information about the flow to be processed 523 * 524 * This function iterates through all matched fields in the given segments, and 525 * creates an extraction sequence for the fields. 526 */ 527 static enum ice_status 528 ice_flow_create_xtrct_seq(struct ice_hw *hw, 529 struct ice_flow_prof_params *params) 530 { 531 struct ice_flow_prof *prof = params->prof; 532 enum ice_status status = 0; 533 u8 i; 534 535 for (i = 0; i < prof->segs_cnt; i++) { 536 u8 j; 537 538 for_each_set_bit(j, (unsigned long *)&prof->segs[i].match, 539 ICE_FLOW_FIELD_IDX_MAX) { 540 status = ice_flow_xtract_fld(hw, params, i, 541 (enum ice_flow_field)j); 542 if (status) 543 return status; 544 } 545 546 /* Process raw matching bytes */ 547 status = ice_flow_xtract_raws(hw, params, i); 548 if (status) 549 return status; 550 } 551 552 return status; 553 } 554 555 /** 556 * ice_flow_proc_segs - process all packet segments associated with a profile 557 * @hw: pointer to the HW struct 558 * @params: information about the flow to be processed 559 */ 560 static enum ice_status 561 ice_flow_proc_segs(struct ice_hw *hw, struct ice_flow_prof_params *params) 562 { 563 enum ice_status status; 564 565 status = ice_flow_proc_seg_hdrs(params); 566 if (status) 567 return status; 568 569 status = ice_flow_create_xtrct_seq(hw, params); 570 if (status) 571 return status; 572 573 switch (params->blk) { 574 case ICE_BLK_FD: 575 case ICE_BLK_RSS: 576 status = 0; 577 break; 578 default: 579 return ICE_ERR_NOT_IMPL; 580 } 581 582 return status; 583 } 584 585 #define ICE_FLOW_FIND_PROF_CHK_FLDS 0x00000001 586 #define ICE_FLOW_FIND_PROF_CHK_VSI 0x00000002 587 #define ICE_FLOW_FIND_PROF_NOT_CHK_DIR 0x00000004 588 589 /** 590 * ice_flow_find_prof_conds - Find a profile matching headers and conditions 591 * @hw: pointer to the HW struct 592 * @blk: classification stage 593 * @dir: flow direction 594 * @segs: array of one or more packet segments that describe the flow 595 * @segs_cnt: number of packet segments provided 596 * @vsi_handle: software VSI handle to check VSI (ICE_FLOW_FIND_PROF_CHK_VSI) 597 * @conds: additional conditions to be checked (ICE_FLOW_FIND_PROF_CHK_*) 598 */ 599 static struct ice_flow_prof * 600 ice_flow_find_prof_conds(struct ice_hw *hw, enum ice_block blk, 601 enum ice_flow_dir dir, struct ice_flow_seg_info *segs, 602 u8 segs_cnt, u16 vsi_handle, u32 conds) 603 { 604 struct ice_flow_prof *p, *prof = NULL; 605 606 mutex_lock(&hw->fl_profs_locks[blk]); 607 list_for_each_entry(p, &hw->fl_profs[blk], l_entry) 608 if ((p->dir == dir || conds & ICE_FLOW_FIND_PROF_NOT_CHK_DIR) && 609 segs_cnt && segs_cnt == p->segs_cnt) { 610 u8 i; 611 612 /* Check for profile-VSI association if specified */ 613 if ((conds & ICE_FLOW_FIND_PROF_CHK_VSI) && 614 ice_is_vsi_valid(hw, vsi_handle) && 615 !test_bit(vsi_handle, p->vsis)) 616 continue; 617 618 /* Protocol headers must be checked. Matched fields are 619 * checked if specified. 620 */ 621 for (i = 0; i < segs_cnt; i++) 622 if (segs[i].hdrs != p->segs[i].hdrs || 623 ((conds & ICE_FLOW_FIND_PROF_CHK_FLDS) && 624 segs[i].match != p->segs[i].match)) 625 break; 626 627 /* A match is found if all segments are matched */ 628 if (i == segs_cnt) { 629 prof = p; 630 break; 631 } 632 } 633 mutex_unlock(&hw->fl_profs_locks[blk]); 634 635 return prof; 636 } 637 638 /** 639 * ice_flow_find_prof_id - Look up a profile with given profile ID 640 * @hw: pointer to the HW struct 641 * @blk: classification stage 642 * @prof_id: unique ID to identify this flow profile 643 */ 644 static struct ice_flow_prof * 645 ice_flow_find_prof_id(struct ice_hw *hw, enum ice_block blk, u64 prof_id) 646 { 647 struct ice_flow_prof *p; 648 649 list_for_each_entry(p, &hw->fl_profs[blk], l_entry) 650 if (p->id == prof_id) 651 return p; 652 653 return NULL; 654 } 655 656 /** 657 * ice_dealloc_flow_entry - Deallocate flow entry memory 658 * @hw: pointer to the HW struct 659 * @entry: flow entry to be removed 660 */ 661 static void 662 ice_dealloc_flow_entry(struct ice_hw *hw, struct ice_flow_entry *entry) 663 { 664 if (!entry) 665 return; 666 667 if (entry->entry) 668 devm_kfree(ice_hw_to_dev(hw), entry->entry); 669 670 devm_kfree(ice_hw_to_dev(hw), entry); 671 } 672 673 /** 674 * ice_flow_rem_entry_sync - Remove a flow entry 675 * @hw: pointer to the HW struct 676 * @blk: classification stage 677 * @entry: flow entry to be removed 678 */ 679 static enum ice_status 680 ice_flow_rem_entry_sync(struct ice_hw *hw, enum ice_block __always_unused blk, 681 struct ice_flow_entry *entry) 682 { 683 if (!entry) 684 return ICE_ERR_BAD_PTR; 685 686 list_del(&entry->l_entry); 687 688 ice_dealloc_flow_entry(hw, entry); 689 690 return 0; 691 } 692 693 /** 694 * ice_flow_add_prof_sync - Add a flow profile for packet segments and fields 695 * @hw: pointer to the HW struct 696 * @blk: classification stage 697 * @dir: flow direction 698 * @prof_id: unique ID to identify this flow profile 699 * @segs: array of one or more packet segments that describe the flow 700 * @segs_cnt: number of packet segments provided 701 * @prof: stores the returned flow profile added 702 * 703 * Assumption: the caller has acquired the lock to the profile list 704 */ 705 static enum ice_status 706 ice_flow_add_prof_sync(struct ice_hw *hw, enum ice_block blk, 707 enum ice_flow_dir dir, u64 prof_id, 708 struct ice_flow_seg_info *segs, u8 segs_cnt, 709 struct ice_flow_prof **prof) 710 { 711 struct ice_flow_prof_params params; 712 enum ice_status status; 713 u8 i; 714 715 if (!prof) 716 return ICE_ERR_BAD_PTR; 717 718 memset(¶ms, 0, sizeof(params)); 719 params.prof = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*params.prof), 720 GFP_KERNEL); 721 if (!params.prof) 722 return ICE_ERR_NO_MEMORY; 723 724 /* initialize extraction sequence to all invalid (0xff) */ 725 for (i = 0; i < ICE_MAX_FV_WORDS; i++) { 726 params.es[i].prot_id = ICE_PROT_INVALID; 727 params.es[i].off = ICE_FV_OFFSET_INVAL; 728 } 729 730 params.blk = blk; 731 params.prof->id = prof_id; 732 params.prof->dir = dir; 733 params.prof->segs_cnt = segs_cnt; 734 735 /* Make a copy of the segments that need to be persistent in the flow 736 * profile instance 737 */ 738 for (i = 0; i < segs_cnt; i++) 739 memcpy(¶ms.prof->segs[i], &segs[i], sizeof(*segs)); 740 741 status = ice_flow_proc_segs(hw, ¶ms); 742 if (status) { 743 ice_debug(hw, ICE_DBG_FLOW, 744 "Error processing a flow's packet segments\n"); 745 goto out; 746 } 747 748 /* Add a HW profile for this flow profile */ 749 status = ice_add_prof(hw, blk, prof_id, (u8 *)params.ptypes, params.es); 750 if (status) { 751 ice_debug(hw, ICE_DBG_FLOW, "Error adding a HW flow profile\n"); 752 goto out; 753 } 754 755 INIT_LIST_HEAD(¶ms.prof->entries); 756 mutex_init(¶ms.prof->entries_lock); 757 *prof = params.prof; 758 759 out: 760 if (status) 761 devm_kfree(ice_hw_to_dev(hw), params.prof); 762 763 return status; 764 } 765 766 /** 767 * ice_flow_rem_prof_sync - remove a flow profile 768 * @hw: pointer to the hardware structure 769 * @blk: classification stage 770 * @prof: pointer to flow profile to remove 771 * 772 * Assumption: the caller has acquired the lock to the profile list 773 */ 774 static enum ice_status 775 ice_flow_rem_prof_sync(struct ice_hw *hw, enum ice_block blk, 776 struct ice_flow_prof *prof) 777 { 778 enum ice_status status; 779 780 /* Remove all remaining flow entries before removing the flow profile */ 781 if (!list_empty(&prof->entries)) { 782 struct ice_flow_entry *e, *t; 783 784 mutex_lock(&prof->entries_lock); 785 786 list_for_each_entry_safe(e, t, &prof->entries, l_entry) { 787 status = ice_flow_rem_entry_sync(hw, blk, e); 788 if (status) 789 break; 790 } 791 792 mutex_unlock(&prof->entries_lock); 793 } 794 795 /* Remove all hardware profiles associated with this flow profile */ 796 status = ice_rem_prof(hw, blk, prof->id); 797 if (!status) { 798 list_del(&prof->l_entry); 799 mutex_destroy(&prof->entries_lock); 800 devm_kfree(ice_hw_to_dev(hw), prof); 801 } 802 803 return status; 804 } 805 806 /** 807 * ice_flow_assoc_prof - associate a VSI with a flow profile 808 * @hw: pointer to the hardware structure 809 * @blk: classification stage 810 * @prof: pointer to flow profile 811 * @vsi_handle: software VSI handle 812 * 813 * Assumption: the caller has acquired the lock to the profile list 814 * and the software VSI handle has been validated 815 */ 816 static enum ice_status 817 ice_flow_assoc_prof(struct ice_hw *hw, enum ice_block blk, 818 struct ice_flow_prof *prof, u16 vsi_handle) 819 { 820 enum ice_status status = 0; 821 822 if (!test_bit(vsi_handle, prof->vsis)) { 823 status = ice_add_prof_id_flow(hw, blk, 824 ice_get_hw_vsi_num(hw, 825 vsi_handle), 826 prof->id); 827 if (!status) 828 set_bit(vsi_handle, prof->vsis); 829 else 830 ice_debug(hw, ICE_DBG_FLOW, 831 "HW profile add failed, %d\n", 832 status); 833 } 834 835 return status; 836 } 837 838 /** 839 * ice_flow_disassoc_prof - disassociate a VSI from a flow profile 840 * @hw: pointer to the hardware structure 841 * @blk: classification stage 842 * @prof: pointer to flow profile 843 * @vsi_handle: software VSI handle 844 * 845 * Assumption: the caller has acquired the lock to the profile list 846 * and the software VSI handle has been validated 847 */ 848 static enum ice_status 849 ice_flow_disassoc_prof(struct ice_hw *hw, enum ice_block blk, 850 struct ice_flow_prof *prof, u16 vsi_handle) 851 { 852 enum ice_status status = 0; 853 854 if (test_bit(vsi_handle, prof->vsis)) { 855 status = ice_rem_prof_id_flow(hw, blk, 856 ice_get_hw_vsi_num(hw, 857 vsi_handle), 858 prof->id); 859 if (!status) 860 clear_bit(vsi_handle, prof->vsis); 861 else 862 ice_debug(hw, ICE_DBG_FLOW, 863 "HW profile remove failed, %d\n", 864 status); 865 } 866 867 return status; 868 } 869 870 /** 871 * ice_flow_add_prof - Add a flow profile for packet segments and matched fields 872 * @hw: pointer to the HW struct 873 * @blk: classification stage 874 * @dir: flow direction 875 * @prof_id: unique ID to identify this flow profile 876 * @segs: array of one or more packet segments that describe the flow 877 * @segs_cnt: number of packet segments provided 878 * @prof: stores the returned flow profile added 879 */ 880 enum ice_status 881 ice_flow_add_prof(struct ice_hw *hw, enum ice_block blk, enum ice_flow_dir dir, 882 u64 prof_id, struct ice_flow_seg_info *segs, u8 segs_cnt, 883 struct ice_flow_prof **prof) 884 { 885 enum ice_status status; 886 887 if (segs_cnt > ICE_FLOW_SEG_MAX) 888 return ICE_ERR_MAX_LIMIT; 889 890 if (!segs_cnt) 891 return ICE_ERR_PARAM; 892 893 if (!segs) 894 return ICE_ERR_BAD_PTR; 895 896 status = ice_flow_val_hdrs(segs, segs_cnt); 897 if (status) 898 return status; 899 900 mutex_lock(&hw->fl_profs_locks[blk]); 901 902 status = ice_flow_add_prof_sync(hw, blk, dir, prof_id, segs, segs_cnt, 903 prof); 904 if (!status) 905 list_add(&(*prof)->l_entry, &hw->fl_profs[blk]); 906 907 mutex_unlock(&hw->fl_profs_locks[blk]); 908 909 return status; 910 } 911 912 /** 913 * ice_flow_rem_prof - Remove a flow profile and all entries associated with it 914 * @hw: pointer to the HW struct 915 * @blk: the block for which the flow profile is to be removed 916 * @prof_id: unique ID of the flow profile to be removed 917 */ 918 enum ice_status 919 ice_flow_rem_prof(struct ice_hw *hw, enum ice_block blk, u64 prof_id) 920 { 921 struct ice_flow_prof *prof; 922 enum ice_status status; 923 924 mutex_lock(&hw->fl_profs_locks[blk]); 925 926 prof = ice_flow_find_prof_id(hw, blk, prof_id); 927 if (!prof) { 928 status = ICE_ERR_DOES_NOT_EXIST; 929 goto out; 930 } 931 932 /* prof becomes invalid after the call */ 933 status = ice_flow_rem_prof_sync(hw, blk, prof); 934 935 out: 936 mutex_unlock(&hw->fl_profs_locks[blk]); 937 938 return status; 939 } 940 941 /** 942 * ice_flow_add_entry - Add a flow entry 943 * @hw: pointer to the HW struct 944 * @blk: classification stage 945 * @prof_id: ID of the profile to add a new flow entry to 946 * @entry_id: unique ID to identify this flow entry 947 * @vsi_handle: software VSI handle for the flow entry 948 * @prio: priority of the flow entry 949 * @data: pointer to a data buffer containing flow entry's match values/masks 950 * @entry_h: pointer to buffer that receives the new flow entry's handle 951 */ 952 enum ice_status 953 ice_flow_add_entry(struct ice_hw *hw, enum ice_block blk, u64 prof_id, 954 u64 entry_id, u16 vsi_handle, enum ice_flow_priority prio, 955 void *data, u64 *entry_h) 956 { 957 struct ice_flow_entry *e = NULL; 958 struct ice_flow_prof *prof; 959 enum ice_status status; 960 961 /* No flow entry data is expected for RSS */ 962 if (!entry_h || (!data && blk != ICE_BLK_RSS)) 963 return ICE_ERR_BAD_PTR; 964 965 if (!ice_is_vsi_valid(hw, vsi_handle)) 966 return ICE_ERR_PARAM; 967 968 mutex_lock(&hw->fl_profs_locks[blk]); 969 970 prof = ice_flow_find_prof_id(hw, blk, prof_id); 971 if (!prof) { 972 status = ICE_ERR_DOES_NOT_EXIST; 973 } else { 974 /* Allocate memory for the entry being added and associate 975 * the VSI to the found flow profile 976 */ 977 e = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*e), GFP_KERNEL); 978 if (!e) 979 status = ICE_ERR_NO_MEMORY; 980 else 981 status = ice_flow_assoc_prof(hw, blk, prof, vsi_handle); 982 } 983 984 mutex_unlock(&hw->fl_profs_locks[blk]); 985 if (status) 986 goto out; 987 988 e->id = entry_id; 989 e->vsi_handle = vsi_handle; 990 e->prof = prof; 991 e->priority = prio; 992 993 switch (blk) { 994 case ICE_BLK_FD: 995 case ICE_BLK_RSS: 996 break; 997 default: 998 status = ICE_ERR_NOT_IMPL; 999 goto out; 1000 } 1001 1002 mutex_lock(&prof->entries_lock); 1003 list_add(&e->l_entry, &prof->entries); 1004 mutex_unlock(&prof->entries_lock); 1005 1006 *entry_h = ICE_FLOW_ENTRY_HNDL(e); 1007 1008 out: 1009 if (status && e) { 1010 if (e->entry) 1011 devm_kfree(ice_hw_to_dev(hw), e->entry); 1012 devm_kfree(ice_hw_to_dev(hw), e); 1013 } 1014 1015 return status; 1016 } 1017 1018 /** 1019 * ice_flow_rem_entry - Remove a flow entry 1020 * @hw: pointer to the HW struct 1021 * @blk: classification stage 1022 * @entry_h: handle to the flow entry to be removed 1023 */ 1024 enum ice_status ice_flow_rem_entry(struct ice_hw *hw, enum ice_block blk, 1025 u64 entry_h) 1026 { 1027 struct ice_flow_entry *entry; 1028 struct ice_flow_prof *prof; 1029 enum ice_status status = 0; 1030 1031 if (entry_h == ICE_FLOW_ENTRY_HANDLE_INVAL) 1032 return ICE_ERR_PARAM; 1033 1034 entry = ICE_FLOW_ENTRY_PTR(entry_h); 1035 1036 /* Retain the pointer to the flow profile as the entry will be freed */ 1037 prof = entry->prof; 1038 1039 if (prof) { 1040 mutex_lock(&prof->entries_lock); 1041 status = ice_flow_rem_entry_sync(hw, blk, entry); 1042 mutex_unlock(&prof->entries_lock); 1043 } 1044 1045 return status; 1046 } 1047 1048 /** 1049 * ice_flow_set_fld_ext - specifies locations of field from entry's input buffer 1050 * @seg: packet segment the field being set belongs to 1051 * @fld: field to be set 1052 * @field_type: type of the field 1053 * @val_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of the value to match from 1054 * entry's input buffer 1055 * @mask_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of mask value from entry's 1056 * input buffer 1057 * @last_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of last/upper value from 1058 * entry's input buffer 1059 * 1060 * This helper function stores information of a field being matched, including 1061 * the type of the field and the locations of the value to match, the mask, and 1062 * the upper-bound value in the start of the input buffer for a flow entry. 1063 * This function should only be used for fixed-size data structures. 1064 * 1065 * This function also opportunistically determines the protocol headers to be 1066 * present based on the fields being set. Some fields cannot be used alone to 1067 * determine the protocol headers present. Sometimes, fields for particular 1068 * protocol headers are not matched. In those cases, the protocol headers 1069 * must be explicitly set. 1070 */ 1071 static void 1072 ice_flow_set_fld_ext(struct ice_flow_seg_info *seg, enum ice_flow_field fld, 1073 enum ice_flow_fld_match_type field_type, u16 val_loc, 1074 u16 mask_loc, u16 last_loc) 1075 { 1076 u64 bit = BIT_ULL(fld); 1077 1078 seg->match |= bit; 1079 if (field_type == ICE_FLOW_FLD_TYPE_RANGE) 1080 seg->range |= bit; 1081 1082 seg->fields[fld].type = field_type; 1083 seg->fields[fld].src.val = val_loc; 1084 seg->fields[fld].src.mask = mask_loc; 1085 seg->fields[fld].src.last = last_loc; 1086 1087 ICE_FLOW_SET_HDRS(seg, ice_flds_info[fld].hdr); 1088 } 1089 1090 /** 1091 * ice_flow_set_fld - specifies locations of field from entry's input buffer 1092 * @seg: packet segment the field being set belongs to 1093 * @fld: field to be set 1094 * @val_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of the value to match from 1095 * entry's input buffer 1096 * @mask_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of mask value from entry's 1097 * input buffer 1098 * @last_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of last/upper value from 1099 * entry's input buffer 1100 * @range: indicate if field being matched is to be in a range 1101 * 1102 * This function specifies the locations, in the form of byte offsets from the 1103 * start of the input buffer for a flow entry, from where the value to match, 1104 * the mask value, and upper value can be extracted. These locations are then 1105 * stored in the flow profile. When adding a flow entry associated with the 1106 * flow profile, these locations will be used to quickly extract the values and 1107 * create the content of a match entry. This function should only be used for 1108 * fixed-size data structures. 1109 */ 1110 void 1111 ice_flow_set_fld(struct ice_flow_seg_info *seg, enum ice_flow_field fld, 1112 u16 val_loc, u16 mask_loc, u16 last_loc, bool range) 1113 { 1114 enum ice_flow_fld_match_type t = range ? 1115 ICE_FLOW_FLD_TYPE_RANGE : ICE_FLOW_FLD_TYPE_REG; 1116 1117 ice_flow_set_fld_ext(seg, fld, t, val_loc, mask_loc, last_loc); 1118 } 1119 1120 /** 1121 * ice_flow_add_fld_raw - sets locations of a raw field from entry's input buf 1122 * @seg: packet segment the field being set belongs to 1123 * @off: offset of the raw field from the beginning of the segment in bytes 1124 * @len: length of the raw pattern to be matched 1125 * @val_loc: location of the value to match from entry's input buffer 1126 * @mask_loc: location of mask value from entry's input buffer 1127 * 1128 * This function specifies the offset of the raw field to be match from the 1129 * beginning of the specified packet segment, and the locations, in the form of 1130 * byte offsets from the start of the input buffer for a flow entry, from where 1131 * the value to match and the mask value to be extracted. These locations are 1132 * then stored in the flow profile. When adding flow entries to the associated 1133 * flow profile, these locations can be used to quickly extract the values to 1134 * create the content of a match entry. This function should only be used for 1135 * fixed-size data structures. 1136 */ 1137 void 1138 ice_flow_add_fld_raw(struct ice_flow_seg_info *seg, u16 off, u8 len, 1139 u16 val_loc, u16 mask_loc) 1140 { 1141 if (seg->raws_cnt < ICE_FLOW_SEG_RAW_FLD_MAX) { 1142 seg->raws[seg->raws_cnt].off = off; 1143 seg->raws[seg->raws_cnt].info.type = ICE_FLOW_FLD_TYPE_SIZE; 1144 seg->raws[seg->raws_cnt].info.src.val = val_loc; 1145 seg->raws[seg->raws_cnt].info.src.mask = mask_loc; 1146 /* The "last" field is used to store the length of the field */ 1147 seg->raws[seg->raws_cnt].info.src.last = len; 1148 } 1149 1150 /* Overflows of "raws" will be handled as an error condition later in 1151 * the flow when this information is processed. 1152 */ 1153 seg->raws_cnt++; 1154 } 1155 1156 #define ICE_FLOW_RSS_SEG_HDR_L3_MASKS \ 1157 (ICE_FLOW_SEG_HDR_IPV4 | ICE_FLOW_SEG_HDR_IPV6) 1158 1159 #define ICE_FLOW_RSS_SEG_HDR_L4_MASKS \ 1160 (ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_SCTP) 1161 1162 #define ICE_FLOW_RSS_SEG_HDR_VAL_MASKS \ 1163 (ICE_FLOW_RSS_SEG_HDR_L3_MASKS | \ 1164 ICE_FLOW_RSS_SEG_HDR_L4_MASKS) 1165 1166 /** 1167 * ice_flow_set_rss_seg_info - setup packet segments for RSS 1168 * @segs: pointer to the flow field segment(s) 1169 * @hash_fields: fields to be hashed on for the segment(s) 1170 * @flow_hdr: protocol header fields within a packet segment 1171 * 1172 * Helper function to extract fields from hash bitmap and use flow 1173 * header value to set flow field segment for further use in flow 1174 * profile entry or removal. 1175 */ 1176 static enum ice_status 1177 ice_flow_set_rss_seg_info(struct ice_flow_seg_info *segs, u64 hash_fields, 1178 u32 flow_hdr) 1179 { 1180 u64 val; 1181 u8 i; 1182 1183 for_each_set_bit(i, (unsigned long *)&hash_fields, 1184 ICE_FLOW_FIELD_IDX_MAX) 1185 ice_flow_set_fld(segs, (enum ice_flow_field)i, 1186 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL, 1187 ICE_FLOW_FLD_OFF_INVAL, false); 1188 1189 ICE_FLOW_SET_HDRS(segs, flow_hdr); 1190 1191 if (segs->hdrs & ~ICE_FLOW_RSS_SEG_HDR_VAL_MASKS) 1192 return ICE_ERR_PARAM; 1193 1194 val = (u64)(segs->hdrs & ICE_FLOW_RSS_SEG_HDR_L3_MASKS); 1195 if (val && !is_power_of_2(val)) 1196 return ICE_ERR_CFG; 1197 1198 val = (u64)(segs->hdrs & ICE_FLOW_RSS_SEG_HDR_L4_MASKS); 1199 if (val && !is_power_of_2(val)) 1200 return ICE_ERR_CFG; 1201 1202 return 0; 1203 } 1204 1205 /** 1206 * ice_rem_vsi_rss_list - remove VSI from RSS list 1207 * @hw: pointer to the hardware structure 1208 * @vsi_handle: software VSI handle 1209 * 1210 * Remove the VSI from all RSS configurations in the list. 1211 */ 1212 void ice_rem_vsi_rss_list(struct ice_hw *hw, u16 vsi_handle) 1213 { 1214 struct ice_rss_cfg *r, *tmp; 1215 1216 if (list_empty(&hw->rss_list_head)) 1217 return; 1218 1219 mutex_lock(&hw->rss_locks); 1220 list_for_each_entry_safe(r, tmp, &hw->rss_list_head, l_entry) 1221 if (test_and_clear_bit(vsi_handle, r->vsis)) 1222 if (bitmap_empty(r->vsis, ICE_MAX_VSI)) { 1223 list_del(&r->l_entry); 1224 devm_kfree(ice_hw_to_dev(hw), r); 1225 } 1226 mutex_unlock(&hw->rss_locks); 1227 } 1228 1229 /** 1230 * ice_rem_vsi_rss_cfg - remove RSS configurations associated with VSI 1231 * @hw: pointer to the hardware structure 1232 * @vsi_handle: software VSI handle 1233 * 1234 * This function will iterate through all flow profiles and disassociate 1235 * the VSI from that profile. If the flow profile has no VSIs it will 1236 * be removed. 1237 */ 1238 enum ice_status ice_rem_vsi_rss_cfg(struct ice_hw *hw, u16 vsi_handle) 1239 { 1240 const enum ice_block blk = ICE_BLK_RSS; 1241 struct ice_flow_prof *p, *t; 1242 enum ice_status status = 0; 1243 1244 if (!ice_is_vsi_valid(hw, vsi_handle)) 1245 return ICE_ERR_PARAM; 1246 1247 if (list_empty(&hw->fl_profs[blk])) 1248 return 0; 1249 1250 mutex_lock(&hw->rss_locks); 1251 list_for_each_entry_safe(p, t, &hw->fl_profs[blk], l_entry) 1252 if (test_bit(vsi_handle, p->vsis)) { 1253 status = ice_flow_disassoc_prof(hw, blk, p, vsi_handle); 1254 if (status) 1255 break; 1256 1257 if (bitmap_empty(p->vsis, ICE_MAX_VSI)) { 1258 status = ice_flow_rem_prof(hw, blk, p->id); 1259 if (status) 1260 break; 1261 } 1262 } 1263 mutex_unlock(&hw->rss_locks); 1264 1265 return status; 1266 } 1267 1268 /** 1269 * ice_rem_rss_list - remove RSS configuration from list 1270 * @hw: pointer to the hardware structure 1271 * @vsi_handle: software VSI handle 1272 * @prof: pointer to flow profile 1273 * 1274 * Assumption: lock has already been acquired for RSS list 1275 */ 1276 static void 1277 ice_rem_rss_list(struct ice_hw *hw, u16 vsi_handle, struct ice_flow_prof *prof) 1278 { 1279 struct ice_rss_cfg *r, *tmp; 1280 1281 /* Search for RSS hash fields associated to the VSI that match the 1282 * hash configurations associated to the flow profile. If found 1283 * remove from the RSS entry list of the VSI context and delete entry. 1284 */ 1285 list_for_each_entry_safe(r, tmp, &hw->rss_list_head, l_entry) 1286 if (r->hashed_flds == prof->segs[prof->segs_cnt - 1].match && 1287 r->packet_hdr == prof->segs[prof->segs_cnt - 1].hdrs) { 1288 clear_bit(vsi_handle, r->vsis); 1289 if (bitmap_empty(r->vsis, ICE_MAX_VSI)) { 1290 list_del(&r->l_entry); 1291 devm_kfree(ice_hw_to_dev(hw), r); 1292 } 1293 return; 1294 } 1295 } 1296 1297 /** 1298 * ice_add_rss_list - add RSS configuration to list 1299 * @hw: pointer to the hardware structure 1300 * @vsi_handle: software VSI handle 1301 * @prof: pointer to flow profile 1302 * 1303 * Assumption: lock has already been acquired for RSS list 1304 */ 1305 static enum ice_status 1306 ice_add_rss_list(struct ice_hw *hw, u16 vsi_handle, struct ice_flow_prof *prof) 1307 { 1308 struct ice_rss_cfg *r, *rss_cfg; 1309 1310 list_for_each_entry(r, &hw->rss_list_head, l_entry) 1311 if (r->hashed_flds == prof->segs[prof->segs_cnt - 1].match && 1312 r->packet_hdr == prof->segs[prof->segs_cnt - 1].hdrs) { 1313 set_bit(vsi_handle, r->vsis); 1314 return 0; 1315 } 1316 1317 rss_cfg = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*rss_cfg), 1318 GFP_KERNEL); 1319 if (!rss_cfg) 1320 return ICE_ERR_NO_MEMORY; 1321 1322 rss_cfg->hashed_flds = prof->segs[prof->segs_cnt - 1].match; 1323 rss_cfg->packet_hdr = prof->segs[prof->segs_cnt - 1].hdrs; 1324 set_bit(vsi_handle, rss_cfg->vsis); 1325 1326 list_add_tail(&rss_cfg->l_entry, &hw->rss_list_head); 1327 1328 return 0; 1329 } 1330 1331 #define ICE_FLOW_PROF_HASH_S 0 1332 #define ICE_FLOW_PROF_HASH_M (0xFFFFFFFFULL << ICE_FLOW_PROF_HASH_S) 1333 #define ICE_FLOW_PROF_HDR_S 32 1334 #define ICE_FLOW_PROF_HDR_M (0x3FFFFFFFULL << ICE_FLOW_PROF_HDR_S) 1335 #define ICE_FLOW_PROF_ENCAP_S 63 1336 #define ICE_FLOW_PROF_ENCAP_M (BIT_ULL(ICE_FLOW_PROF_ENCAP_S)) 1337 1338 #define ICE_RSS_OUTER_HEADERS 1 1339 #define ICE_RSS_INNER_HEADERS 2 1340 1341 /* Flow profile ID format: 1342 * [0:31] - Packet match fields 1343 * [32:62] - Protocol header 1344 * [63] - Encapsulation flag, 0 if non-tunneled, 1 if tunneled 1345 */ 1346 #define ICE_FLOW_GEN_PROFID(hash, hdr, segs_cnt) \ 1347 (u64)(((u64)(hash) & ICE_FLOW_PROF_HASH_M) | \ 1348 (((u64)(hdr) << ICE_FLOW_PROF_HDR_S) & ICE_FLOW_PROF_HDR_M) | \ 1349 ((u8)((segs_cnt) - 1) ? ICE_FLOW_PROF_ENCAP_M : 0)) 1350 1351 /** 1352 * ice_add_rss_cfg_sync - add an RSS configuration 1353 * @hw: pointer to the hardware structure 1354 * @vsi_handle: software VSI handle 1355 * @hashed_flds: hash bit fields (ICE_FLOW_HASH_*) to configure 1356 * @addl_hdrs: protocol header fields 1357 * @segs_cnt: packet segment count 1358 * 1359 * Assumption: lock has already been acquired for RSS list 1360 */ 1361 static enum ice_status 1362 ice_add_rss_cfg_sync(struct ice_hw *hw, u16 vsi_handle, u64 hashed_flds, 1363 u32 addl_hdrs, u8 segs_cnt) 1364 { 1365 const enum ice_block blk = ICE_BLK_RSS; 1366 struct ice_flow_prof *prof = NULL; 1367 struct ice_flow_seg_info *segs; 1368 enum ice_status status; 1369 1370 if (!segs_cnt || segs_cnt > ICE_FLOW_SEG_MAX) 1371 return ICE_ERR_PARAM; 1372 1373 segs = kcalloc(segs_cnt, sizeof(*segs), GFP_KERNEL); 1374 if (!segs) 1375 return ICE_ERR_NO_MEMORY; 1376 1377 /* Construct the packet segment info from the hashed fields */ 1378 status = ice_flow_set_rss_seg_info(&segs[segs_cnt - 1], hashed_flds, 1379 addl_hdrs); 1380 if (status) 1381 goto exit; 1382 1383 /* Search for a flow profile that has matching headers, hash fields 1384 * and has the input VSI associated to it. If found, no further 1385 * operations required and exit. 1386 */ 1387 prof = ice_flow_find_prof_conds(hw, blk, ICE_FLOW_RX, segs, segs_cnt, 1388 vsi_handle, 1389 ICE_FLOW_FIND_PROF_CHK_FLDS | 1390 ICE_FLOW_FIND_PROF_CHK_VSI); 1391 if (prof) 1392 goto exit; 1393 1394 /* Check if a flow profile exists with the same protocol headers and 1395 * associated with the input VSI. If so disassociate the VSI from 1396 * this profile. The VSI will be added to a new profile created with 1397 * the protocol header and new hash field configuration. 1398 */ 1399 prof = ice_flow_find_prof_conds(hw, blk, ICE_FLOW_RX, segs, segs_cnt, 1400 vsi_handle, ICE_FLOW_FIND_PROF_CHK_VSI); 1401 if (prof) { 1402 status = ice_flow_disassoc_prof(hw, blk, prof, vsi_handle); 1403 if (!status) 1404 ice_rem_rss_list(hw, vsi_handle, prof); 1405 else 1406 goto exit; 1407 1408 /* Remove profile if it has no VSIs associated */ 1409 if (bitmap_empty(prof->vsis, ICE_MAX_VSI)) { 1410 status = ice_flow_rem_prof(hw, blk, prof->id); 1411 if (status) 1412 goto exit; 1413 } 1414 } 1415 1416 /* Search for a profile that has same match fields only. If this 1417 * exists then associate the VSI to this profile. 1418 */ 1419 prof = ice_flow_find_prof_conds(hw, blk, ICE_FLOW_RX, segs, segs_cnt, 1420 vsi_handle, 1421 ICE_FLOW_FIND_PROF_CHK_FLDS); 1422 if (prof) { 1423 status = ice_flow_assoc_prof(hw, blk, prof, vsi_handle); 1424 if (!status) 1425 status = ice_add_rss_list(hw, vsi_handle, prof); 1426 goto exit; 1427 } 1428 1429 /* Create a new flow profile with generated profile and packet 1430 * segment information. 1431 */ 1432 status = ice_flow_add_prof(hw, blk, ICE_FLOW_RX, 1433 ICE_FLOW_GEN_PROFID(hashed_flds, 1434 segs[segs_cnt - 1].hdrs, 1435 segs_cnt), 1436 segs, segs_cnt, &prof); 1437 if (status) 1438 goto exit; 1439 1440 status = ice_flow_assoc_prof(hw, blk, prof, vsi_handle); 1441 /* If association to a new flow profile failed then this profile can 1442 * be removed. 1443 */ 1444 if (status) { 1445 ice_flow_rem_prof(hw, blk, prof->id); 1446 goto exit; 1447 } 1448 1449 status = ice_add_rss_list(hw, vsi_handle, prof); 1450 1451 exit: 1452 kfree(segs); 1453 return status; 1454 } 1455 1456 /** 1457 * ice_add_rss_cfg - add an RSS configuration with specified hashed fields 1458 * @hw: pointer to the hardware structure 1459 * @vsi_handle: software VSI handle 1460 * @hashed_flds: hash bit fields (ICE_FLOW_HASH_*) to configure 1461 * @addl_hdrs: protocol header fields 1462 * 1463 * This function will generate a flow profile based on fields associated with 1464 * the input fields to hash on, the flow type and use the VSI number to add 1465 * a flow entry to the profile. 1466 */ 1467 enum ice_status 1468 ice_add_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u64 hashed_flds, 1469 u32 addl_hdrs) 1470 { 1471 enum ice_status status; 1472 1473 if (hashed_flds == ICE_HASH_INVALID || 1474 !ice_is_vsi_valid(hw, vsi_handle)) 1475 return ICE_ERR_PARAM; 1476 1477 mutex_lock(&hw->rss_locks); 1478 status = ice_add_rss_cfg_sync(hw, vsi_handle, hashed_flds, addl_hdrs, 1479 ICE_RSS_OUTER_HEADERS); 1480 if (!status) 1481 status = ice_add_rss_cfg_sync(hw, vsi_handle, hashed_flds, 1482 addl_hdrs, ICE_RSS_INNER_HEADERS); 1483 mutex_unlock(&hw->rss_locks); 1484 1485 return status; 1486 } 1487 1488 /* Mapping of AVF hash bit fields to an L3-L4 hash combination. 1489 * As the ice_flow_avf_hdr_field represent individual bit shifts in a hash, 1490 * convert its values to their appropriate flow L3, L4 values. 1491 */ 1492 #define ICE_FLOW_AVF_RSS_IPV4_MASKS \ 1493 (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_OTHER) | \ 1494 BIT_ULL(ICE_AVF_FLOW_FIELD_FRAG_IPV4)) 1495 #define ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS \ 1496 (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_TCP_SYN_NO_ACK) | \ 1497 BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_TCP)) 1498 #define ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS \ 1499 (BIT_ULL(ICE_AVF_FLOW_FIELD_UNICAST_IPV4_UDP) | \ 1500 BIT_ULL(ICE_AVF_FLOW_FIELD_MULTICAST_IPV4_UDP) | \ 1501 BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_UDP)) 1502 #define ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS \ 1503 (ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS | ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS | \ 1504 ICE_FLOW_AVF_RSS_IPV4_MASKS | BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_SCTP)) 1505 1506 #define ICE_FLOW_AVF_RSS_IPV6_MASKS \ 1507 (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_OTHER) | \ 1508 BIT_ULL(ICE_AVF_FLOW_FIELD_FRAG_IPV6)) 1509 #define ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS \ 1510 (BIT_ULL(ICE_AVF_FLOW_FIELD_UNICAST_IPV6_UDP) | \ 1511 BIT_ULL(ICE_AVF_FLOW_FIELD_MULTICAST_IPV6_UDP) | \ 1512 BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_UDP)) 1513 #define ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS \ 1514 (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_TCP_SYN_NO_ACK) | \ 1515 BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_TCP)) 1516 #define ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS \ 1517 (ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS | ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS | \ 1518 ICE_FLOW_AVF_RSS_IPV6_MASKS | BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_SCTP)) 1519 1520 /** 1521 * ice_add_avf_rss_cfg - add an RSS configuration for AVF driver 1522 * @hw: pointer to the hardware structure 1523 * @vsi_handle: software VSI handle 1524 * @avf_hash: hash bit fields (ICE_AVF_FLOW_FIELD_*) to configure 1525 * 1526 * This function will take the hash bitmap provided by the AVF driver via a 1527 * message, convert it to ICE-compatible values, and configure RSS flow 1528 * profiles. 1529 */ 1530 enum ice_status 1531 ice_add_avf_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u64 avf_hash) 1532 { 1533 enum ice_status status = 0; 1534 u64 hash_flds; 1535 1536 if (avf_hash == ICE_AVF_FLOW_FIELD_INVALID || 1537 !ice_is_vsi_valid(hw, vsi_handle)) 1538 return ICE_ERR_PARAM; 1539 1540 /* Make sure no unsupported bits are specified */ 1541 if (avf_hash & ~(ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS | 1542 ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS)) 1543 return ICE_ERR_CFG; 1544 1545 hash_flds = avf_hash; 1546 1547 /* Always create an L3 RSS configuration for any L4 RSS configuration */ 1548 if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS) 1549 hash_flds |= ICE_FLOW_AVF_RSS_IPV4_MASKS; 1550 1551 if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS) 1552 hash_flds |= ICE_FLOW_AVF_RSS_IPV6_MASKS; 1553 1554 /* Create the corresponding RSS configuration for each valid hash bit */ 1555 while (hash_flds) { 1556 u64 rss_hash = ICE_HASH_INVALID; 1557 1558 if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS) { 1559 if (hash_flds & ICE_FLOW_AVF_RSS_IPV4_MASKS) { 1560 rss_hash = ICE_FLOW_HASH_IPV4; 1561 hash_flds &= ~ICE_FLOW_AVF_RSS_IPV4_MASKS; 1562 } else if (hash_flds & 1563 ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS) { 1564 rss_hash = ICE_FLOW_HASH_IPV4 | 1565 ICE_FLOW_HASH_TCP_PORT; 1566 hash_flds &= ~ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS; 1567 } else if (hash_flds & 1568 ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS) { 1569 rss_hash = ICE_FLOW_HASH_IPV4 | 1570 ICE_FLOW_HASH_UDP_PORT; 1571 hash_flds &= ~ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS; 1572 } else if (hash_flds & 1573 BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_SCTP)) { 1574 rss_hash = ICE_FLOW_HASH_IPV4 | 1575 ICE_FLOW_HASH_SCTP_PORT; 1576 hash_flds &= 1577 ~BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_SCTP); 1578 } 1579 } else if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS) { 1580 if (hash_flds & ICE_FLOW_AVF_RSS_IPV6_MASKS) { 1581 rss_hash = ICE_FLOW_HASH_IPV6; 1582 hash_flds &= ~ICE_FLOW_AVF_RSS_IPV6_MASKS; 1583 } else if (hash_flds & 1584 ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS) { 1585 rss_hash = ICE_FLOW_HASH_IPV6 | 1586 ICE_FLOW_HASH_TCP_PORT; 1587 hash_flds &= ~ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS; 1588 } else if (hash_flds & 1589 ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS) { 1590 rss_hash = ICE_FLOW_HASH_IPV6 | 1591 ICE_FLOW_HASH_UDP_PORT; 1592 hash_flds &= ~ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS; 1593 } else if (hash_flds & 1594 BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_SCTP)) { 1595 rss_hash = ICE_FLOW_HASH_IPV6 | 1596 ICE_FLOW_HASH_SCTP_PORT; 1597 hash_flds &= 1598 ~BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_SCTP); 1599 } 1600 } 1601 1602 if (rss_hash == ICE_HASH_INVALID) 1603 return ICE_ERR_OUT_OF_RANGE; 1604 1605 status = ice_add_rss_cfg(hw, vsi_handle, rss_hash, 1606 ICE_FLOW_SEG_HDR_NONE); 1607 if (status) 1608 break; 1609 } 1610 1611 return status; 1612 } 1613 1614 /** 1615 * ice_replay_rss_cfg - replay RSS configurations associated with VSI 1616 * @hw: pointer to the hardware structure 1617 * @vsi_handle: software VSI handle 1618 */ 1619 enum ice_status ice_replay_rss_cfg(struct ice_hw *hw, u16 vsi_handle) 1620 { 1621 enum ice_status status = 0; 1622 struct ice_rss_cfg *r; 1623 1624 if (!ice_is_vsi_valid(hw, vsi_handle)) 1625 return ICE_ERR_PARAM; 1626 1627 mutex_lock(&hw->rss_locks); 1628 list_for_each_entry(r, &hw->rss_list_head, l_entry) { 1629 if (test_bit(vsi_handle, r->vsis)) { 1630 status = ice_add_rss_cfg_sync(hw, vsi_handle, 1631 r->hashed_flds, 1632 r->packet_hdr, 1633 ICE_RSS_OUTER_HEADERS); 1634 if (status) 1635 break; 1636 status = ice_add_rss_cfg_sync(hw, vsi_handle, 1637 r->hashed_flds, 1638 r->packet_hdr, 1639 ICE_RSS_INNER_HEADERS); 1640 if (status) 1641 break; 1642 } 1643 } 1644 mutex_unlock(&hw->rss_locks); 1645 1646 return status; 1647 } 1648 1649 /** 1650 * ice_get_rss_cfg - returns hashed fields for the given header types 1651 * @hw: pointer to the hardware structure 1652 * @vsi_handle: software VSI handle 1653 * @hdrs: protocol header type 1654 * 1655 * This function will return the match fields of the first instance of flow 1656 * profile having the given header types and containing input VSI 1657 */ 1658 u64 ice_get_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u32 hdrs) 1659 { 1660 u64 rss_hash = ICE_HASH_INVALID; 1661 struct ice_rss_cfg *r; 1662 1663 /* verify if the protocol header is non zero and VSI is valid */ 1664 if (hdrs == ICE_FLOW_SEG_HDR_NONE || !ice_is_vsi_valid(hw, vsi_handle)) 1665 return ICE_HASH_INVALID; 1666 1667 mutex_lock(&hw->rss_locks); 1668 list_for_each_entry(r, &hw->rss_list_head, l_entry) 1669 if (test_bit(vsi_handle, r->vsis) && 1670 r->packet_hdr == hdrs) { 1671 rss_hash = r->hashed_flds; 1672 break; 1673 } 1674 mutex_unlock(&hw->rss_locks); 1675 1676 return rss_hash; 1677 } 1678