LXR linux/drivers/net/ethernet/intel/ice/ice

   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 */
   8struct 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 */
  21static const
  22struct 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 */
  55static 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 */
  67static 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 */
  79static 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 */
  91static 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 */
 103static 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 */
 115static 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 */
 127static 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 */
 139static 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 */
 153static 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 */
 165static 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 */
 177static 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 */
 189static 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 */
 201struct 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 */
 224static enum ice_status
 225ice_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 */
 257static 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 */
 285static enum ice_status
 286ice_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 */
 360static enum ice_status
 361ice_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 */
 450static enum ice_status
 451ice_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 = &params->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 */
 527static enum ice_status
 528ice_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 */
 560static enum ice_status
 561ice_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 */
 599static struct ice_flow_prof *
 600ice_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 */
 644static struct ice_flow_prof *
 645ice_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 */
 661static void
 662ice_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 */
 679static enum ice_status
 680ice_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 */
 705static enum ice_status
 706ice_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        params = kzalloc(sizeof(*params), GFP_KERNEL);
 719        if (!params)
 720                return ICE_ERR_NO_MEMORY;
 721
 722        params->prof = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*params->prof),
 723                                    GFP_KERNEL);
 724        if (!params->prof) {
 725                status = ICE_ERR_NO_MEMORY;
 726                goto free_params;
 727        }
 728
 729        /* initialize extraction sequence to all invalid (0xff) */
 730        for (i = 0; i < ICE_MAX_FV_WORDS; i++) {
 731                params->es[i].prot_id = ICE_PROT_INVALID;
 732                params->es[i].off = ICE_FV_OFFSET_INVAL;
 733        }
 734
 735        params->blk = blk;
 736        params->prof->id = prof_id;
 737        params->prof->dir = dir;
 738        params->prof->segs_cnt = segs_cnt;
 739
 740        /* Make a copy of the segments that need to be persistent in the flow
 741         * profile instance
 742         */
 743        for (i = 0; i < segs_cnt; i++)
 744                memcpy(&params->prof->segs[i], &segs[i], sizeof(*segs));
 745
 746        status = ice_flow_proc_segs(hw, params);
 747        if (status) {
 748                ice_debug(hw, ICE_DBG_FLOW, "Error processing a flow's packet segments\n");
 749                goto out;
 750        }
 751
 752        /* Add a HW profile for this flow profile */
 753        status = ice_add_prof(hw, blk, prof_id, (u8 *)params->ptypes,
 754                              params->es);
 755        if (status) {
 756                ice_debug(hw, ICE_DBG_FLOW, "Error adding a HW flow profile\n");
 757                goto out;
 758        }
 759
 760        INIT_LIST_HEAD(&params->prof->entries);
 761        mutex_init(&params->prof->entries_lock);
 762        *prof = params->prof;
 763
 764out:
 765        if (status)
 766                devm_kfree(ice_hw_to_dev(hw), params->prof);
 767free_params:
 768        kfree(params);
 769
 770        return status;
 771}
 772
 773/**
 774 * ice_flow_rem_prof_sync - remove a flow profile
 775 * @hw: pointer to the hardware structure
 776 * @blk: classification stage
 777 * @prof: pointer to flow profile to remove
 778 *
 779 * Assumption: the caller has acquired the lock to the profile list
 780 */
 781static enum ice_status
 782ice_flow_rem_prof_sync(struct ice_hw *hw, enum ice_block blk,
 783                       struct ice_flow_prof *prof)
 784{
 785        enum ice_status status;
 786
 787        /* Remove all remaining flow entries before removing the flow profile */
 788        if (!list_empty(&prof->entries)) {
 789                struct ice_flow_entry *e, *t;
 790
 791                mutex_lock(&prof->entries_lock);
 792
 793                list_for_each_entry_safe(e, t, &prof->entries, l_entry) {
 794                        status = ice_flow_rem_entry_sync(hw, blk, e);
 795                        if (status)
 796                                break;
 797                }
 798
 799                mutex_unlock(&prof->entries_lock);
 800        }
 801
 802        /* Remove all hardware profiles associated with this flow profile */
 803        status = ice_rem_prof(hw, blk, prof->id);
 804        if (!status) {
 805                list_del(&prof->l_entry);
 806                mutex_destroy(&prof->entries_lock);
 807                devm_kfree(ice_hw_to_dev(hw), prof);
 808        }
 809
 810        return status;
 811}
 812
 813/**
 814 * ice_flow_assoc_prof - associate a VSI with a flow profile
 815 * @hw: pointer to the hardware structure
 816 * @blk: classification stage
 817 * @prof: pointer to flow profile
 818 * @vsi_handle: software VSI handle
 819 *
 820 * Assumption: the caller has acquired the lock to the profile list
 821 * and the software VSI handle has been validated
 822 */
 823static enum ice_status
 824ice_flow_assoc_prof(struct ice_hw *hw, enum ice_block blk,
 825                    struct ice_flow_prof *prof, u16 vsi_handle)
 826{
 827        enum ice_status status = 0;
 828
 829        if (!test_bit(vsi_handle, prof->vsis)) {
 830                status = ice_add_prof_id_flow(hw, blk,
 831                                              ice_get_hw_vsi_num(hw,
 832                                                                 vsi_handle),
 833                                              prof->id);
 834                if (!status)
 835                        set_bit(vsi_handle, prof->vsis);
 836                else
 837                        ice_debug(hw, ICE_DBG_FLOW, "HW profile add failed, %d\n",
 838                                  status);
 839        }
 840
 841        return status;
 842}
 843
 844/**
 845 * ice_flow_disassoc_prof - disassociate a VSI from a flow profile
 846 * @hw: pointer to the hardware structure
 847 * @blk: classification stage
 848 * @prof: pointer to flow profile
 849 * @vsi_handle: software VSI handle
 850 *
 851 * Assumption: the caller has acquired the lock to the profile list
 852 * and the software VSI handle has been validated
 853 */
 854static enum ice_status
 855ice_flow_disassoc_prof(struct ice_hw *hw, enum ice_block blk,
 856                       struct ice_flow_prof *prof, u16 vsi_handle)
 857{
 858        enum ice_status status = 0;
 859
 860        if (test_bit(vsi_handle, prof->vsis)) {
 861                status = ice_rem_prof_id_flow(hw, blk,
 862                                              ice_get_hw_vsi_num(hw,
 863                                                                 vsi_handle),
 864                                              prof->id);
 865                if (!status)
 866                        clear_bit(vsi_handle, prof->vsis);
 867                else
 868                        ice_debug(hw, ICE_DBG_FLOW, "HW profile remove failed, %d\n",
 869                                  status);
 870        }
 871
 872        return status;
 873}
 874
 875/**
 876 * ice_flow_add_prof - Add a flow profile for packet segments and matched fields
 877 * @hw: pointer to the HW struct
 878 * @blk: classification stage
 879 * @dir: flow direction
 880 * @prof_id: unique ID to identify this flow profile
 881 * @segs: array of one or more packet segments that describe the flow
 882 * @segs_cnt: number of packet segments provided
 883 * @prof: stores the returned flow profile added
 884 */
 885enum ice_status
 886ice_flow_add_prof(struct ice_hw *hw, enum ice_block blk, enum ice_flow_dir dir,
 887                  u64 prof_id, struct ice_flow_seg_info *segs, u8 segs_cnt,
 888                  struct ice_flow_prof **prof)
 889{
 890        enum ice_status status;
 891
 892        if (segs_cnt > ICE_FLOW_SEG_MAX)
 893                return ICE_ERR_MAX_LIMIT;
 894
 895        if (!segs_cnt)
 896                return ICE_ERR_PARAM;
 897
 898        if (!segs)
 899                return ICE_ERR_BAD_PTR;
 900
 901        status = ice_flow_val_hdrs(segs, segs_cnt);
 902        if (status)
 903                return status;
 904
 905        mutex_lock(&hw->fl_profs_locks[blk]);
 906
 907        status = ice_flow_add_prof_sync(hw, blk, dir, prof_id, segs, segs_cnt,
 908                                        prof);
 909        if (!status)
 910                list_add(&(*prof)->l_entry, &hw->fl_profs[blk]);
 911
 912        mutex_unlock(&hw->fl_profs_locks[blk]);
 913
 914        return status;
 915}
 916
 917/**
 918 * ice_flow_rem_prof - Remove a flow profile and all entries associated with it
 919 * @hw: pointer to the HW struct
 920 * @blk: the block for which the flow profile is to be removed
 921 * @prof_id: unique ID of the flow profile to be removed
 922 */
 923enum ice_status
 924ice_flow_rem_prof(struct ice_hw *hw, enum ice_block blk, u64 prof_id)
 925{
 926        struct ice_flow_prof *prof;
 927        enum ice_status status;
 928
 929        mutex_lock(&hw->fl_profs_locks[blk]);
 930
 931        prof = ice_flow_find_prof_id(hw, blk, prof_id);
 932        if (!prof) {
 933                status = ICE_ERR_DOES_NOT_EXIST;
 934                goto out;
 935        }
 936
 937        /* prof becomes invalid after the call */
 938        status = ice_flow_rem_prof_sync(hw, blk, prof);
 939
 940out:
 941        mutex_unlock(&hw->fl_profs_locks[blk]);
 942
 943        return status;
 944}
 945
 946/**
 947 * ice_flow_add_entry - Add a flow entry
 948 * @hw: pointer to the HW struct
 949 * @blk: classification stage
 950 * @prof_id: ID of the profile to add a new flow entry to
 951 * @entry_id: unique ID to identify this flow entry
 952 * @vsi_handle: software VSI handle for the flow entry
 953 * @prio: priority of the flow entry
 954 * @data: pointer to a data buffer containing flow entry's match values/masks
 955 * @entry_h: pointer to buffer that receives the new flow entry's handle
 956 */
 957enum ice_status
 958ice_flow_add_entry(struct ice_hw *hw, enum ice_block blk, u64 prof_id,
 959                   u64 entry_id, u16 vsi_handle, enum ice_flow_priority prio,
 960                   void *data, u64 *entry_h)
 961{
 962        struct ice_flow_entry *e = NULL;
 963        struct ice_flow_prof *prof;
 964        enum ice_status status;
 965
 966        /* No flow entry data is expected for RSS */
 967        if (!entry_h || (!data && blk != ICE_BLK_RSS))
 968                return ICE_ERR_BAD_PTR;
 969
 970        if (!ice_is_vsi_valid(hw, vsi_handle))
 971                return ICE_ERR_PARAM;
 972
 973        mutex_lock(&hw->fl_profs_locks[blk]);
 974
 975        prof = ice_flow_find_prof_id(hw, blk, prof_id);
 976        if (!prof) {
 977                status = ICE_ERR_DOES_NOT_EXIST;
 978        } else {
 979                /* Allocate memory for the entry being added and associate
 980                 * the VSI to the found flow profile
 981                 */
 982                e = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*e), GFP_KERNEL);
 983                if (!e)
 984                        status = ICE_ERR_NO_MEMORY;
 985                else
 986                        status = ice_flow_assoc_prof(hw, blk, prof, vsi_handle);
 987        }
 988
 989        mutex_unlock(&hw->fl_profs_locks[blk]);
 990        if (status)
 991                goto out;
 992
 993        e->id = entry_id;
 994        e->vsi_handle = vsi_handle;
 995        e->prof = prof;
 996        e->priority = prio;
 997
 998        switch (blk) {
 999        case ICE_BLK_FD:
1000        case ICE_BLK_RSS:

1001                break;
1002        default:
1003                status = ICE_ERR_NOT_IMPL;
1004                goto out;
1005        }
1006
1007        mutex_lock(&prof->entries_lock);
1008        list_add(&e->l_entry, &prof->entries);
1009        mutex_unlock(&prof->entries_lock);
1010
1011        *entry_h = ICE_FLOW_ENTRY_HNDL(e);
1012
1013out:
1014        if (status && e) {
1015                if (e->entry)
1016                        devm_kfree(ice_hw_to_dev(hw), e->entry);
1017                devm_kfree(ice_hw_to_dev(hw), e);
1018        }
1019
1020        return status;
1021}
1022
1023/**
1024 * ice_flow_rem_entry - Remove a flow entry
1025 * @hw: pointer to the HW struct
1026 * @blk: classification stage
1027 * @entry_h: handle to the flow entry to be removed
1028 */
1029enum ice_status ice_flow_rem_entry(struct ice_hw *hw, enum ice_block blk,
1030                                   u64 entry_h)
1031{
1032        struct ice_flow_entry *entry;
1033        struct ice_flow_prof *prof;
1034        enum ice_status status = 0;
1035
1036        if (entry_h == ICE_FLOW_ENTRY_HANDLE_INVAL)
1037                return ICE_ERR_PARAM;
1038
1039        entry = ICE_FLOW_ENTRY_PTR(entry_h);
1040
1041        /* Retain the pointer to the flow profile as the entry will be freed */
1042        prof = entry->prof;
1043
1044        if (prof) {
1045                mutex_lock(&prof->entries_lock);
1046                status = ice_flow_rem_entry_sync(hw, blk, entry);
1047                mutex_unlock(&prof->entries_lock);
1048        }
1049
1050        return status;
1051}
1052
1053/**
1054 * ice_flow_set_fld_ext - specifies locations of field from entry's input buffer
1055 * @seg: packet segment the field being set belongs to
1056 * @fld: field to be set
1057 * @field_type: type of the field
1058 * @val_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of the value to match from
1059 *           entry's input buffer
1060 * @mask_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of mask value from entry's
1061 *            input buffer
1062 * @last_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of last/upper value from
1063 *            entry's input buffer
1064 *
1065 * This helper function stores information of a field being matched, including
1066 * the type of the field and the locations of the value to match, the mask, and
1067 * the upper-bound value in the start of the input buffer for a flow entry.
1068 * This function should only be used for fixed-size data structures.
1069 *
1070 * This function also opportunistically determines the protocol headers to be
1071 * present based on the fields being set. Some fields cannot be used alone to
1072 * determine the protocol headers present. Sometimes, fields for particular
1073 * protocol headers are not matched. In those cases, the protocol headers
1074 * must be explicitly set.
1075 */
1076static void
1077ice_flow_set_fld_ext(struct ice_flow_seg_info *seg, enum ice_flow_field fld,
1078                     enum ice_flow_fld_match_type field_type, u16 val_loc,
1079                     u16 mask_loc, u16 last_loc)
1080{
1081        u64 bit = BIT_ULL(fld);
1082
1083        seg->match |= bit;
1084        if (field_type == ICE_FLOW_FLD_TYPE_RANGE)
1085                seg->range |= bit;
1086
1087        seg->fields[fld].type = field_type;
1088        seg->fields[fld].src.val = val_loc;
1089        seg->fields[fld].src.mask = mask_loc;
1090        seg->fields[fld].src.last = last_loc;
1091
1092        ICE_FLOW_SET_HDRS(seg, ice_flds_info[fld].hdr);
1093}
1094
1095/**
1096 * ice_flow_set_fld - specifies locations of field from entry's input buffer
1097 * @seg: packet segment the field being set belongs to
1098 * @fld: field to be set
1099 * @val_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of the value to match from
1100 *           entry's input buffer
1101 * @mask_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of mask value from entry's
1102 *            input buffer
1103 * @last_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of last/upper value from
1104 *            entry's input buffer
1105 * @range: indicate if field being matched is to be in a range
1106 *
1107 * This function specifies the locations, in the form of byte offsets from the
1108 * start of the input buffer for a flow entry, from where the value to match,
1109 * the mask value, and upper value can be extracted. These locations are then
1110 * stored in the flow profile. When adding a flow entry associated with the
1111 * flow profile, these locations will be used to quickly extract the values and
1112 * create the content of a match entry. This function should only be used for
1113 * fixed-size data structures.
1114 */
1115void
1116ice_flow_set_fld(struct ice_flow_seg_info *seg, enum ice_flow_field fld,
1117                 u16 val_loc, u16 mask_loc, u16 last_loc, bool range)
1118{
1119        enum ice_flow_fld_match_type t = range ?
1120                ICE_FLOW_FLD_TYPE_RANGE : ICE_FLOW_FLD_TYPE_REG;
1121
1122        ice_flow_set_fld_ext(seg, fld, t, val_loc, mask_loc, last_loc);
1123}
1124
1125/**
1126 * ice_flow_add_fld_raw - sets locations of a raw field from entry's input buf
1127 * @seg: packet segment the field being set belongs to
1128 * @off: offset of the raw field from the beginning of the segment in bytes
1129 * @len: length of the raw pattern to be matched
1130 * @val_loc: location of the value to match from entry's input buffer
1131 * @mask_loc: location of mask value from entry's input buffer
1132 *
1133 * This function specifies the offset of the raw field to be match from the
1134 * beginning of the specified packet segment, and the locations, in the form of
1135 * byte offsets from the start of the input buffer for a flow entry, from where
1136 * the value to match and the mask value to be extracted. These locations are
1137 * then stored in the flow profile. When adding flow entries to the associated
1138 * flow profile, these locations can be used to quickly extract the values to
1139 * create the content of a match entry. This function should only be used for
1140 * fixed-size data structures.
1141 */
1142void
1143ice_flow_add_fld_raw(struct ice_flow_seg_info *seg, u16 off, u8 len,
1144                     u16 val_loc, u16 mask_loc)
1145{
1146        if (seg->raws_cnt < ICE_FLOW_SEG_RAW_FLD_MAX) {
1147                seg->raws[seg->raws_cnt].off = off;
1148                seg->raws[seg->raws_cnt].info.type = ICE_FLOW_FLD_TYPE_SIZE;
1149                seg->raws[seg->raws_cnt].info.src.val = val_loc;
1150                seg->raws[seg->raws_cnt].info.src.mask = mask_loc;
1151                /* The "last" field is used to store the length of the field */
1152                seg->raws[seg->raws_cnt].info.src.last = len;
1153        }
1154
1155        /* Overflows of "raws" will be handled as an error condition later in
1156         * the flow when this information is processed.
1157         */
1158        seg->raws_cnt++;
1159}
1160
1161#define ICE_FLOW_RSS_SEG_HDR_L3_MASKS \
1162        (ICE_FLOW_SEG_HDR_IPV4 | ICE_FLOW_SEG_HDR_IPV6)
1163
1164#define ICE_FLOW_RSS_SEG_HDR_L4_MASKS \
1165        (ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_SCTP)
1166
1167#define ICE_FLOW_RSS_SEG_HDR_VAL_MASKS \
1168        (ICE_FLOW_RSS_SEG_HDR_L3_MASKS | \
1169         ICE_FLOW_RSS_SEG_HDR_L4_MASKS)
1170
1171/**
1172 * ice_flow_set_rss_seg_info - setup packet segments for RSS
1173 * @segs: pointer to the flow field segment(s)
1174 * @hash_fields: fields to be hashed on for the segment(s)
1175 * @flow_hdr: protocol header fields within a packet segment
1176 *
1177 * Helper function to extract fields from hash bitmap and use flow
1178 * header value to set flow field segment for further use in flow
1179 * profile entry or removal.
1180 */
1181static enum ice_status
1182ice_flow_set_rss_seg_info(struct ice_flow_seg_info *segs, u64 hash_fields,
1183                          u32 flow_hdr)
1184{
1185        u64 val;
1186        u8 i;
1187
1188        for_each_set_bit(i, (unsigned long *)&hash_fields,
1189                         ICE_FLOW_FIELD_IDX_MAX)
1190                ice_flow_set_fld(segs, (enum ice_flow_field)i,
1191                                 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
1192                                 ICE_FLOW_FLD_OFF_INVAL, false);
1193
1194        ICE_FLOW_SET_HDRS(segs, flow_hdr);
1195
1196        if (segs->hdrs & ~ICE_FLOW_RSS_SEG_HDR_VAL_MASKS)
1197                return ICE_ERR_PARAM;
1198
1199        val = (u64)(segs->hdrs & ICE_FLOW_RSS_SEG_HDR_L3_MASKS);
1200        if (val && !is_power_of_2(val))
1201                return ICE_ERR_CFG;
1202
1203        val = (u64)(segs->hdrs & ICE_FLOW_RSS_SEG_HDR_L4_MASKS);
1204        if (val && !is_power_of_2(val))
1205                return ICE_ERR_CFG;
1206
1207        return 0;
1208}
1209
1210/**
1211 * ice_rem_vsi_rss_list - remove VSI from RSS list
1212 * @hw: pointer to the hardware structure
1213 * @vsi_handle: software VSI handle
1214 *
1215 * Remove the VSI from all RSS configurations in the list.
1216 */
1217void ice_rem_vsi_rss_list(struct ice_hw *hw, u16 vsi_handle)
1218{
1219        struct ice_rss_cfg *r, *tmp;
1220
1221        if (list_empty(&hw->rss_list_head))
1222                return;
1223
1224        mutex_lock(&hw->rss_locks);
1225        list_for_each_entry_safe(r, tmp, &hw->rss_list_head, l_entry)
1226                if (test_and_clear_bit(vsi_handle, r->vsis))
1227                        if (bitmap_empty(r->vsis, ICE_MAX_VSI)) {
1228                                list_del(&r->l_entry);
1229                                devm_kfree(ice_hw_to_dev(hw), r);
1230                        }
1231        mutex_unlock(&hw->rss_locks);
1232}
1233
1234/**
1235 * ice_rem_vsi_rss_cfg - remove RSS configurations associated with VSI
1236 * @hw: pointer to the hardware structure
1237 * @vsi_handle: software VSI handle
1238 *
1239 * This function will iterate through all flow profiles and disassociate
1240 * the VSI from that profile. If the flow profile has no VSIs it will
1241 * be removed.
1242 */
1243enum ice_status ice_rem_vsi_rss_cfg(struct ice_hw *hw, u16 vsi_handle)
1244{
1245        const enum ice_block blk = ICE_BLK_RSS;
1246        struct ice_flow_prof *p, *t;
1247        enum ice_status status = 0;
1248
1249        if (!ice_is_vsi_valid(hw, vsi_handle))
1250                return ICE_ERR_PARAM;
1251
1252        if (list_empty(&hw->fl_profs[blk]))
1253                return 0;
1254
1255        mutex_lock(&hw->rss_locks);
1256        list_for_each_entry_safe(p, t, &hw->fl_profs[blk], l_entry)
1257                if (test_bit(vsi_handle, p->vsis)) {
1258                        status = ice_flow_disassoc_prof(hw, blk, p, vsi_handle);
1259                        if (status)
1260                                break;
1261
1262                        if (bitmap_empty(p->vsis, ICE_MAX_VSI)) {
1263                                status = ice_flow_rem_prof(hw, blk, p->id);
1264                                if (status)
1265                                        break;
1266                        }
1267                }
1268        mutex_unlock(&hw->rss_locks);
1269
1270        return status;
1271}
1272
1273/**
1274 * ice_rem_rss_list - remove RSS configuration from list
1275 * @hw: pointer to the hardware structure
1276 * @vsi_handle: software VSI handle
1277 * @prof: pointer to flow profile
1278 *
1279 * Assumption: lock has already been acquired for RSS list
1280 */
1281static void
1282ice_rem_rss_list(struct ice_hw *hw, u16 vsi_handle, struct ice_flow_prof *prof)
1283{
1284        struct ice_rss_cfg *r, *tmp;
1285
1286        /* Search for RSS hash fields associated to the VSI that match the
1287         * hash configurations associated to the flow profile. If found
1288         * remove from the RSS entry list of the VSI context and delete entry.
1289         */
1290        list_for_each_entry_safe(r, tmp, &hw->rss_list_head, l_entry)
1291                if (r->hashed_flds == prof->segs[prof->segs_cnt - 1].match &&
1292                    r->packet_hdr == prof->segs[prof->segs_cnt - 1].hdrs) {
1293                        clear_bit(vsi_handle, r->vsis);
1294                        if (bitmap_empty(r->vsis, ICE_MAX_VSI)) {
1295                                list_del(&r->l_entry);
1296                                devm_kfree(ice_hw_to_dev(hw), r);
1297                        }
1298                        return;
1299                }
1300}
1301
1302/**
1303 * ice_add_rss_list - add RSS configuration to list
1304 * @hw: pointer to the hardware structure
1305 * @vsi_handle: software VSI handle
1306 * @prof: pointer to flow profile
1307 *
1308 * Assumption: lock has already been acquired for RSS list
1309 */
1310static enum ice_status
1311ice_add_rss_list(struct ice_hw *hw, u16 vsi_handle, struct ice_flow_prof *prof)
1312{
1313        struct ice_rss_cfg *r, *rss_cfg;
1314
1315        list_for_each_entry(r, &hw->rss_list_head, l_entry)
1316                if (r->hashed_flds == prof->segs[prof->segs_cnt - 1].match &&
1317                    r->packet_hdr == prof->segs[prof->segs_cnt - 1].hdrs) {
1318                        set_bit(vsi_handle, r->vsis);
1319                        return 0;
1320                }
1321
1322        rss_cfg = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*rss_cfg),
1323                               GFP_KERNEL);
1324        if (!rss_cfg)
1325                return ICE_ERR_NO_MEMORY;
1326
1327        rss_cfg->hashed_flds = prof->segs[prof->segs_cnt - 1].match;
1328        rss_cfg->packet_hdr = prof->segs[prof->segs_cnt - 1].hdrs;
1329        set_bit(vsi_handle, rss_cfg->vsis);
1330
1331        list_add_tail(&rss_cfg->l_entry, &hw->rss_list_head);
1332
1333        return 0;
1334}
1335
1336#define ICE_FLOW_PROF_HASH_S    0
1337#define ICE_FLOW_PROF_HASH_M    (0xFFFFFFFFULL << ICE_FLOW_PROF_HASH_S)
1338#define ICE_FLOW_PROF_HDR_S     32
1339#define ICE_FLOW_PROF_HDR_M     (0x3FFFFFFFULL << ICE_FLOW_PROF_HDR_S)
1340#define ICE_FLOW_PROF_ENCAP_S   63
1341#define ICE_FLOW_PROF_ENCAP_M   (BIT_ULL(ICE_FLOW_PROF_ENCAP_S))
1342
1343#define ICE_RSS_OUTER_HEADERS   1
1344#define ICE_RSS_INNER_HEADERS   2
1345
1346/* Flow profile ID format:
1347 * [0:31] - Packet match fields
1348 * [32:62] - Protocol header
1349 * [63] - Encapsulation flag, 0 if non-tunneled, 1 if tunneled
1350 */
1351#define ICE_FLOW_GEN_PROFID(hash, hdr, segs_cnt) \
1352        (u64)(((u64)(hash) & ICE_FLOW_PROF_HASH_M) | \
1353              (((u64)(hdr) << ICE_FLOW_PROF_HDR_S) & ICE_FLOW_PROF_HDR_M) | \
1354              ((u8)((segs_cnt) - 1) ? ICE_FLOW_PROF_ENCAP_M : 0))
1355
1356/**
1357 * ice_add_rss_cfg_sync - add an RSS configuration
1358 * @hw: pointer to the hardware structure
1359 * @vsi_handle: software VSI handle
1360 * @hashed_flds: hash bit fields (ICE_FLOW_HASH_*) to configure
1361 * @addl_hdrs: protocol header fields
1362 * @segs_cnt: packet segment count
1363 *
1364 * Assumption: lock has already been acquired for RSS list
1365 */
1366static enum ice_status
1367ice_add_rss_cfg_sync(struct ice_hw *hw, u16 vsi_handle, u64 hashed_flds,
1368                     u32 addl_hdrs, u8 segs_cnt)
1369{
1370        const enum ice_block blk = ICE_BLK_RSS;
1371        struct ice_flow_prof *prof = NULL;
1372        struct ice_flow_seg_info *segs;
1373        enum ice_status status;
1374
1375        if (!segs_cnt || segs_cnt > ICE_FLOW_SEG_MAX)
1376                return ICE_ERR_PARAM;
1377
1378        segs = kcalloc(segs_cnt, sizeof(*segs), GFP_KERNEL);
1379        if (!segs)
1380                return ICE_ERR_NO_MEMORY;
1381
1382        /* Construct the packet segment info from the hashed fields */
1383        status = ice_flow_set_rss_seg_info(&segs[segs_cnt - 1], hashed_flds,
1384                                           addl_hdrs);
1385        if (status)
1386                goto exit;
1387
1388        /* Search for a flow profile that has matching headers, hash fields
1389         * and has the input VSI associated to it. If found, no further
1390         * operations required and exit.
1391         */
1392        prof = ice_flow_find_prof_conds(hw, blk, ICE_FLOW_RX, segs, segs_cnt,
1393                                        vsi_handle,
1394                                        ICE_FLOW_FIND_PROF_CHK_FLDS |
1395                                        ICE_FLOW_FIND_PROF_CHK_VSI);
1396        if (prof)
1397                goto exit;
1398
1399        /* Check if a flow profile exists with the same protocol headers and
1400         * associated with the input VSI. If so disassociate the VSI from
1401         * this profile. The VSI will be added to a new profile created with
1402         * the protocol header and new hash field configuration.
1403         */
1404        prof = ice_flow_find_prof_conds(hw, blk, ICE_FLOW_RX, segs, segs_cnt,
1405                                        vsi_handle, ICE_FLOW_FIND_PROF_CHK_VSI);
1406        if (prof) {
1407                status = ice_flow_disassoc_prof(hw, blk, prof, vsi_handle);
1408                if (!status)
1409                        ice_rem_rss_list(hw, vsi_handle, prof);
1410                else
1411                        goto exit;
1412
1413                /* Remove profile if it has no VSIs associated */
1414                if (bitmap_empty(prof->vsis, ICE_MAX_VSI)) {
1415                        status = ice_flow_rem_prof(hw, blk, prof->id);
1416                        if (status)
1417                                goto exit;
1418                }
1419        }
1420
1421        /* Search for a profile that has same match fields only. If this
1422         * exists then associate the VSI to this profile.
1423         */
1424        prof = ice_flow_find_prof_conds(hw, blk, ICE_FLOW_RX, segs, segs_cnt,
1425                                        vsi_handle,
1426                                        ICE_FLOW_FIND_PROF_CHK_FLDS);
1427        if (prof) {
1428                status = ice_flow_assoc_prof(hw, blk, prof, vsi_handle);
1429                if (!status)
1430                        status = ice_add_rss_list(hw, vsi_handle, prof);
1431                goto exit;
1432        }
1433
1434        /* Create a new flow profile with generated profile and packet
1435         * segment information.
1436         */
1437        status = ice_flow_add_prof(hw, blk, ICE_FLOW_RX,
1438                                   ICE_FLOW_GEN_PROFID(hashed_flds,
1439                                                       segs[segs_cnt - 1].hdrs,
1440                                                       segs_cnt),
1441                                   segs, segs_cnt, &prof);
1442        if (status)
1443                goto exit;
1444
1445        status = ice_flow_assoc_prof(hw, blk, prof, vsi_handle);
1446        /* If association to a new flow profile failed then this profile can
1447         * be removed.
1448         */
1449        if (status) {
1450                ice_flow_rem_prof(hw, blk, prof->id);
1451                goto exit;
1452        }
1453
1454        status = ice_add_rss_list(hw, vsi_handle, prof);
1455
1456exit:
1457        kfree(segs);
1458        return status;
1459}
1460
1461/**
1462 * ice_add_rss_cfg - add an RSS configuration with specified hashed fields
1463 * @hw: pointer to the hardware structure
1464 * @vsi_handle: software VSI handle
1465 * @hashed_flds: hash bit fields (ICE_FLOW_HASH_*) to configure
1466 * @addl_hdrs: protocol header fields
1467 *
1468 * This function will generate a flow profile based on fields associated with
1469 * the input fields to hash on, the flow type and use the VSI number to add
1470 * a flow entry to the profile.
1471 */
1472enum ice_status
1473ice_add_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u64 hashed_flds,
1474                u32 addl_hdrs)
1475{
1476        enum ice_status status;
1477
1478        if (hashed_flds == ICE_HASH_INVALID ||
1479            !ice_is_vsi_valid(hw, vsi_handle))
1480                return ICE_ERR_PARAM;
1481
1482        mutex_lock(&hw->rss_locks);
1483        status = ice_add_rss_cfg_sync(hw, vsi_handle, hashed_flds, addl_hdrs,
1484                                      ICE_RSS_OUTER_HEADERS);
1485        if (!status)
1486                status = ice_add_rss_cfg_sync(hw, vsi_handle, hashed_flds,
1487                                              addl_hdrs, ICE_RSS_INNER_HEADERS);
1488        mutex_unlock(&hw->rss_locks);
1489
1490        return status;
1491}
1492
1493/* Mapping of AVF hash bit fields to an L3-L4 hash combination.
1494 * As the ice_flow_avf_hdr_field represent individual bit shifts in a hash,
1495 * convert its values to their appropriate flow L3, L4 values.
1496 */
1497#define ICE_FLOW_AVF_RSS_IPV4_MASKS \
1498        (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_OTHER) | \
1499         BIT_ULL(ICE_AVF_FLOW_FIELD_FRAG_IPV4))
1500#define ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS \
1501        (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_TCP_SYN_NO_ACK) | \
1502         BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_TCP))
1503#define ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS \
1504        (BIT_ULL(ICE_AVF_FLOW_FIELD_UNICAST_IPV4_UDP) | \
1505         BIT_ULL(ICE_AVF_FLOW_FIELD_MULTICAST_IPV4_UDP) | \
1506         BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_UDP))
1507#define ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS \
1508        (ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS | ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS | \
1509         ICE_FLOW_AVF_RSS_IPV4_MASKS | BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_SCTP))
1510
1511#define ICE_FLOW_AVF_RSS_IPV6_MASKS \
1512        (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_OTHER) | \
1513         BIT_ULL(ICE_AVF_FLOW_FIELD_FRAG_IPV6))
1514#define ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS \
1515        (BIT_ULL(ICE_AVF_FLOW_FIELD_UNICAST_IPV6_UDP) | \
1516         BIT_ULL(ICE_AVF_FLOW_FIELD_MULTICAST_IPV6_UDP) | \
1517         BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_UDP))
1518#define ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS \
1519        (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_TCP_SYN_NO_ACK) | \
1520         BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_TCP))
1521#define ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS \
1522        (ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS | ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS | \
1523         ICE_FLOW_AVF_RSS_IPV6_MASKS | BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_SCTP))
1524
1525/**
1526 * ice_add_avf_rss_cfg - add an RSS configuration for AVF driver
1527 * @hw: pointer to the hardware structure
1528 * @vsi_handle: software VSI handle
1529 * @avf_hash: hash bit fields (ICE_AVF_FLOW_FIELD_*) to configure
1530 *
1531 * This function will take the hash bitmap provided by the AVF driver via a
1532 * message, convert it to ICE-compatible values, and configure RSS flow
1533 * profiles.
1534 */
1535enum ice_status
1536ice_add_avf_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u64 avf_hash)
1537{
1538        enum ice_status status = 0;
1539        u64 hash_flds;
1540
1541        if (avf_hash == ICE_AVF_FLOW_FIELD_INVALID ||
1542            !ice_is_vsi_valid(hw, vsi_handle))
1543                return ICE_ERR_PARAM;
1544
1545        /* Make sure no unsupported bits are specified */
1546        if (avf_hash & ~(ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS |
1547                         ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS))
1548                return ICE_ERR_CFG;
1549
1550        hash_flds = avf_hash;
1551
1552        /* Always create an L3 RSS configuration for any L4 RSS configuration */
1553        if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS)
1554                hash_flds |= ICE_FLOW_AVF_RSS_IPV4_MASKS;
1555
1556        if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS)
1557                hash_flds |= ICE_FLOW_AVF_RSS_IPV6_MASKS;
1558
1559        /* Create the corresponding RSS configuration for each valid hash bit */
1560        while (hash_flds) {
1561                u64 rss_hash = ICE_HASH_INVALID;
1562
1563                if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS) {
1564                        if (hash_flds & ICE_FLOW_AVF_RSS_IPV4_MASKS) {
1565                                rss_hash = ICE_FLOW_HASH_IPV4;
1566                                hash_flds &= ~ICE_FLOW_AVF_RSS_IPV4_MASKS;
1567                        } else if (hash_flds &
1568                                   ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS) {
1569                                rss_hash = ICE_FLOW_HASH_IPV4 |
1570                                        ICE_FLOW_HASH_TCP_PORT;
1571                                hash_flds &= ~ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS;
1572                        } else if (hash_flds &
1573                                   ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS) {
1574                                rss_hash = ICE_FLOW_HASH_IPV4 |
1575                                        ICE_FLOW_HASH_UDP_PORT;
1576                                hash_flds &= ~ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS;
1577                        } else if (hash_flds &
1578                                   BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_SCTP)) {
1579                                rss_hash = ICE_FLOW_HASH_IPV4 |
1580                                        ICE_FLOW_HASH_SCTP_PORT;
1581                                hash_flds &=
1582                                        ~BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_SCTP);
1583                        }
1584                } else if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS) {
1585                        if (hash_flds & ICE_FLOW_AVF_RSS_IPV6_MASKS) {
1586                                rss_hash = ICE_FLOW_HASH_IPV6;
1587                                hash_flds &= ~ICE_FLOW_AVF_RSS_IPV6_MASKS;
1588                        } else if (hash_flds &
1589                                   ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS) {
1590                                rss_hash = ICE_FLOW_HASH_IPV6 |
1591                                        ICE_FLOW_HASH_TCP_PORT;
1592                                hash_flds &= ~ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS;
1593                        } else if (hash_flds &
1594                                   ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS) {
1595                                rss_hash = ICE_FLOW_HASH_IPV6 |
1596                                        ICE_FLOW_HASH_UDP_PORT;
1597                                hash_flds &= ~ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS;
1598                        } else if (hash_flds &
1599                                   BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_SCTP)) {
1600                                rss_hash = ICE_FLOW_HASH_IPV6 |
1601                                        ICE_FLOW_HASH_SCTP_PORT;
1602                                hash_flds &=
1603                                        ~BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_SCTP);
1604                        }
1605                }
1606
1607                if (rss_hash == ICE_HASH_INVALID)
1608                        return ICE_ERR_OUT_OF_RANGE;
1609
1610                status = ice_add_rss_cfg(hw, vsi_handle, rss_hash,
1611                                         ICE_FLOW_SEG_HDR_NONE);
1612                if (status)
1613                        break;
1614        }
1615
1616        return status;
1617}
1618
1619/**
1620 * ice_replay_rss_cfg - replay RSS configurations associated with VSI
1621 * @hw: pointer to the hardware structure
1622 * @vsi_handle: software VSI handle
1623 */
1624enum ice_status ice_replay_rss_cfg(struct ice_hw *hw, u16 vsi_handle)
1625{
1626        enum ice_status status = 0;
1627        struct ice_rss_cfg *r;
1628
1629        if (!ice_is_vsi_valid(hw, vsi_handle))
1630                return ICE_ERR_PARAM;
1631
1632        mutex_lock(&hw->rss_locks);
1633        list_for_each_entry(r, &hw->rss_list_head, l_entry) {
1634                if (test_bit(vsi_handle, r->vsis)) {
1635                        status = ice_add_rss_cfg_sync(hw, vsi_handle,
1636                                                      r->hashed_flds,
1637                                                      r->packet_hdr,
1638                                                      ICE_RSS_OUTER_HEADERS);
1639                        if (status)
1640                                break;
1641                        status = ice_add_rss_cfg_sync(hw, vsi_handle,
1642                                                      r->hashed_flds,
1643                                                      r->packet_hdr,
1644                                                      ICE_RSS_INNER_HEADERS);
1645                        if (status)
1646                                break;
1647                }
1648        }
1649        mutex_unlock(&hw->rss_locks);
1650
1651        return status;
1652}
1653
1654/**
1655 * ice_get_rss_cfg - returns hashed fields for the given header types
1656 * @hw: pointer to the hardware structure
1657 * @vsi_handle: software VSI handle
1658 * @hdrs: protocol header type
1659 *
1660 * This function will return the match fields of the first instance of flow
1661 * profile having the given header types and containing input VSI
1662 */
1663u64 ice_get_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u32 hdrs)
1664{
1665        u64 rss_hash = ICE_HASH_INVALID;
1666        struct ice_rss_cfg *r;
1667
1668        /* verify if the protocol header is non zero and VSI is valid */
1669        if (hdrs == ICE_FLOW_SEG_HDR_NONE || !ice_is_vsi_valid(hw, vsi_handle))
1670                return ICE_HASH_INVALID;
1671
1672        mutex_lock(&hw->rss_locks);
1673        list_for_each_entry(r, &hw->rss_list_head, l_entry)
1674                if (test_bit(vsi_handle, r->vsis) &&
1675                    r->packet_hdr == hdrs) {
1676                        rss_hash = r->hashed_flds;
1677                        break;
1678                }
1679        mutex_unlock(&hw->rss_locks);
1680
1681        return rss_hash;
1682}
1683