drivers/infiniband/hw/mlx5/fs.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /*
   3  * Copyright (c) 2018, Mellanox Technologies inc.  All rights reserved.
   4  */
   5
   6 #include <rdma/ib_user_verbs.h>
   7 #include <rdma/ib_verbs.h>
   8 #include <rdma/uverbs_types.h>
   9 #include <rdma/uverbs_ioctl.h>
  10 #include <rdma/uverbs_std_types.h>
  11 #include <rdma/mlx5_user_ioctl_cmds.h>
  12 #include <rdma/mlx5_user_ioctl_verbs.h>
  13 #include <rdma/ib_umem.h>
  14 #include <linux/mlx5/driver.h>
  15 #include <linux/mlx5/fs.h>
  16 #include <linux/mlx5/fs_helpers.h>
  17 #include <linux/mlx5/accel.h>
  18 #include <linux/mlx5/eswitch.h>
  19 #include "mlx5_ib.h"
  20 #include "counters.h"
  21 #include "devx.h"
  22 #include "fs.h"
  23
  24 #define UVERBS_MODULE_NAME mlx5_ib
  25 #include <rdma/uverbs_named_ioctl.h>
  26
  27 enum {
  28         MATCH_CRITERIA_ENABLE_OUTER_BIT,
  29         MATCH_CRITERIA_ENABLE_MISC_BIT,
  30         MATCH_CRITERIA_ENABLE_INNER_BIT,
  31         MATCH_CRITERIA_ENABLE_MISC2_BIT
  32 };
  33
  34 #define HEADER_IS_ZERO(match_criteria, headers)                            \
  35         !(memchr_inv(MLX5_ADDR_OF(fte_match_param, match_criteria, headers), \
  36                     0, MLX5_FLD_SZ_BYTES(fte_match_param, headers)))       \
  37
  38 static u8 get_match_criteria_enable(u32 *match_criteria)
  39 {
  40         u8 match_criteria_enable;
  41
  42         match_criteria_enable =
  43                 (!HEADER_IS_ZERO(match_criteria, outer_headers)) <<
  44                 MATCH_CRITERIA_ENABLE_OUTER_BIT;
  45         match_criteria_enable |=
  46                 (!HEADER_IS_ZERO(match_criteria, misc_parameters)) <<
  47                 MATCH_CRITERIA_ENABLE_MISC_BIT;
  48         match_criteria_enable |=
  49                 (!HEADER_IS_ZERO(match_criteria, inner_headers)) <<
  50                 MATCH_CRITERIA_ENABLE_INNER_BIT;
  51         match_criteria_enable |=
  52                 (!HEADER_IS_ZERO(match_criteria, misc_parameters_2)) <<
  53                 MATCH_CRITERIA_ENABLE_MISC2_BIT;
  54
  55         return match_criteria_enable;
  56 }
  57
  58 static int set_proto(void *outer_c, void *outer_v, u8 mask, u8 val)
  59 {
  60         u8 entry_mask;
  61         u8 entry_val;
  62         int err = 0;
  63
  64         if (!mask)
  65                 goto out;
  66
  67         entry_mask = MLX5_GET(fte_match_set_lyr_2_4, outer_c,
  68                               ip_protocol);
  69         entry_val = MLX5_GET(fte_match_set_lyr_2_4, outer_v,
  70                              ip_protocol);
  71         if (!entry_mask) {
  72                 MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_protocol, mask);
  73                 MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_protocol, val);
  74                 goto out;
  75         }
  76         /* Don't override existing ip protocol */
  77         if (mask != entry_mask || val != entry_val)
  78                 err = -EINVAL;
  79 out:
  80         return err;
  81 }
  82
  83 static void set_flow_label(void *misc_c, void *misc_v, u32 mask, u32 val,
  84                            bool inner)
  85 {
  86         if (inner) {
  87                 MLX5_SET(fte_match_set_misc,
  88                          misc_c, inner_ipv6_flow_label, mask);
  89                 MLX5_SET(fte_match_set_misc,
  90                          misc_v, inner_ipv6_flow_label, val);
  91         } else {
  92                 MLX5_SET(fte_match_set_misc,
  93                          misc_c, outer_ipv6_flow_label, mask);
  94                 MLX5_SET(fte_match_set_misc,
  95                          misc_v, outer_ipv6_flow_label, val);
  96         }
  97 }
  98
  99 static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val)
 100 {
 101         MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_ecn, mask);
 102         MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_ecn, val);
 103         MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_dscp, mask >> 2);
 104         MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_dscp, val >> 2);
 105 }
 106
 107 static int check_mpls_supp_fields(u32 field_support, const __be32 *set_mask)
 108 {
 109         if (MLX5_GET(fte_match_mpls, set_mask, mpls_label) &&
 110             !(field_support & MLX5_FIELD_SUPPORT_MPLS_LABEL))
 111                 return -EOPNOTSUPP;
 112
 113         if (MLX5_GET(fte_match_mpls, set_mask, mpls_exp) &&
 114             !(field_support & MLX5_FIELD_SUPPORT_MPLS_EXP))
 115                 return -EOPNOTSUPP;
 116
 117         if (MLX5_GET(fte_match_mpls, set_mask, mpls_s_bos) &&
 118             !(field_support & MLX5_FIELD_SUPPORT_MPLS_S_BOS))
 119                 return -EOPNOTSUPP;
 120
 121         if (MLX5_GET(fte_match_mpls, set_mask, mpls_ttl) &&
 122             !(field_support & MLX5_FIELD_SUPPORT_MPLS_TTL))
 123                 return -EOPNOTSUPP;
 124
 125         return 0;
 126 }
 127
 128 #define LAST_ETH_FIELD vlan_tag
 129 #define LAST_IB_FIELD sl
 130 #define LAST_IPV4_FIELD tos
 131 #define LAST_IPV6_FIELD traffic_class
 132 #define LAST_TCP_UDP_FIELD src_port
 133 #define LAST_TUNNEL_FIELD tunnel_id
 134 #define LAST_FLOW_TAG_FIELD tag_id
 135 #define LAST_DROP_FIELD size
 136 #define LAST_COUNTERS_FIELD counters
 137
 138 /* Field is the last supported field */
 139 #define FIELDS_NOT_SUPPORTED(filter, field)                                    \
 140         memchr_inv((void *)&filter.field + sizeof(filter.field), 0,            \
 141                    sizeof(filter) - offsetofend(typeof(filter), field))
 142
 143 int parse_flow_flow_action(struct mlx5_ib_flow_action *maction,
 144                            bool is_egress,
 145                            struct mlx5_flow_act *action)
 146 {
 147
 148         switch (maction->ib_action.type) {
 149         case IB_FLOW_ACTION_ESP:
 150                 if (action->action & (MLX5_FLOW_CONTEXT_ACTION_ENCRYPT |
 151                                       MLX5_FLOW_CONTEXT_ACTION_DECRYPT))
 152                         return -EINVAL;
 153                 /* Currently only AES_GCM keymat is supported by the driver */
 154                 action->esp_id = (uintptr_t)maction->esp_aes_gcm.ctx;
 155                 action->action |= is_egress ?
 156                         MLX5_FLOW_CONTEXT_ACTION_ENCRYPT :
 157                         MLX5_FLOW_CONTEXT_ACTION_DECRYPT;
 158                 return 0;
 159         case IB_FLOW_ACTION_UNSPECIFIED:
 160                 if (maction->flow_action_raw.sub_type ==
 161                     MLX5_IB_FLOW_ACTION_MODIFY_HEADER) {
 162                         if (action->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 163                                 return -EINVAL;
 164                         action->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
 165                         action->modify_hdr =
 166                                 maction->flow_action_raw.modify_hdr;
 167                         return 0;
 168                 }
 169                 if (maction->flow_action_raw.sub_type ==
 170                     MLX5_IB_FLOW_ACTION_DECAP) {
 171                         if (action->action & MLX5_FLOW_CONTEXT_ACTION_DECAP)
 172                                 return -EINVAL;
 173                         action->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
 174                         return 0;
 175                 }
 176                 if (maction->flow_action_raw.sub_type ==
 177                     MLX5_IB_FLOW_ACTION_PACKET_REFORMAT) {
 178                         if (action->action &
 179                             MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT)
 180                                 return -EINVAL;
 181                         action->action |=
 182                                 MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
 183                         action->pkt_reformat =
 184                                 maction->flow_action_raw.pkt_reformat;
 185                         return 0;
 186                 }
 187                 fallthrough;
 188         default:
 189                 return -EOPNOTSUPP;
 190         }
 191 }
 192
 193 static int parse_flow_attr(struct mlx5_core_dev *mdev,
 194                            struct mlx5_flow_spec *spec,
 195                            const union ib_flow_spec *ib_spec,
 196                            const struct ib_flow_attr *flow_attr,
 197                            struct mlx5_flow_act *action, u32 prev_type)
 198 {
 199         struct mlx5_flow_context *flow_context = &spec->flow_context;
 200         u32 *match_c = spec->match_criteria;
 201         u32 *match_v = spec->match_value;
 202         void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
 203                                            misc_parameters);
 204         void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v,
 205                                            misc_parameters);
 206         void *misc_params2_c = MLX5_ADDR_OF(fte_match_param, match_c,
 207                                             misc_parameters_2);
 208         void *misc_params2_v = MLX5_ADDR_OF(fte_match_param, match_v,
 209                                             misc_parameters_2);
 210         void *headers_c;
 211         void *headers_v;
 212         int match_ipv;
 213         int ret;
 214
 215         if (ib_spec->type & IB_FLOW_SPEC_INNER) {
 216                 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
 217                                          inner_headers);
 218                 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
 219                                          inner_headers);
 220                 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
 221                                         ft_field_support.inner_ip_version);
 222         } else {
 223                 headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
 224                                          outer_headers);
 225                 headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
 226                                          outer_headers);
 227                 match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
 228                                         ft_field_support.outer_ip_version);
 229         }
 230
 231         switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
 232         case IB_FLOW_SPEC_ETH:
 233                 if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
 234                         return -EOPNOTSUPP;
 235
 236                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 237                                              dmac_47_16),
 238                                 ib_spec->eth.mask.dst_mac);
 239                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 240                                              dmac_47_16),
 241                                 ib_spec->eth.val.dst_mac);
 242
 243                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 244                                              smac_47_16),
 245                                 ib_spec->eth.mask.src_mac);
 246                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 247                                              smac_47_16),
 248                                 ib_spec->eth.val.src_mac);
 249
 250                 if (ib_spec->eth.mask.vlan_tag) {
 251                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 252                                  cvlan_tag, 1);
 253                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 254                                  cvlan_tag, 1);
 255
 256                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 257                                  first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
 258                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 259                                  first_vid, ntohs(ib_spec->eth.val.vlan_tag));
 260
 261                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 262                                  first_cfi,
 263                                  ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
 264                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 265                                  first_cfi,
 266                                  ntohs(ib_spec->eth.val.vlan_tag) >> 12);
 267
 268                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 269                                  first_prio,
 270                                  ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
 271                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 272                                  first_prio,
 273                                  ntohs(ib_spec->eth.val.vlan_tag) >> 13);
 274                 }
 275                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 276                          ethertype, ntohs(ib_spec->eth.mask.ether_type));
 277                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 278                          ethertype, ntohs(ib_spec->eth.val.ether_type));
 279                 break;
 280         case IB_FLOW_SPEC_IPV4:
 281                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
 282                         return -EOPNOTSUPP;
 283
 284                 if (match_ipv) {
 285                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 286                                  ip_version, 0xf);
 287                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 288                                  ip_version, MLX5_FS_IPV4_VERSION);
 289                 } else {
 290                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 291                                  ethertype, 0xffff);
 292                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 293                                  ethertype, ETH_P_IP);
 294                 }
 295
 296                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 297                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
 298                        &ib_spec->ipv4.mask.src_ip,
 299                        sizeof(ib_spec->ipv4.mask.src_ip));
 300                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 301                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
 302                        &ib_spec->ipv4.val.src_ip,
 303                        sizeof(ib_spec->ipv4.val.src_ip));
 304                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 305                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
 306                        &ib_spec->ipv4.mask.dst_ip,
 307                        sizeof(ib_spec->ipv4.mask.dst_ip));
 308                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 309                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
 310                        &ib_spec->ipv4.val.dst_ip,
 311                        sizeof(ib_spec->ipv4.val.dst_ip));
 312
 313                 set_tos(headers_c, headers_v,
 314                         ib_spec->ipv4.mask.tos, ib_spec->ipv4.val.tos);
 315
 316                 if (set_proto(headers_c, headers_v,
 317                               ib_spec->ipv4.mask.proto,
 318                               ib_spec->ipv4.val.proto))
 319                         return -EINVAL;
 320                 break;
 321         case IB_FLOW_SPEC_IPV6:
 322                 if (FIELDS_NOT_SUPPORTED(ib_spec->ipv6.mask, LAST_IPV6_FIELD))
 323                         return -EOPNOTSUPP;
 324
 325                 if (match_ipv) {
 326                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 327                                  ip_version, 0xf);
 328                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 329                                  ip_version, MLX5_FS_IPV6_VERSION);
 330                 } else {
 331                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 332                                  ethertype, 0xffff);
 333                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 334                                  ethertype, ETH_P_IPV6);
 335                 }
 336
 337                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 338                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 339                        &ib_spec->ipv6.mask.src_ip,
 340                        sizeof(ib_spec->ipv6.mask.src_ip));
 341                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 342                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 343                        &ib_spec->ipv6.val.src_ip,
 344                        sizeof(ib_spec->ipv6.val.src_ip));
 345                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 346                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 347                        &ib_spec->ipv6.mask.dst_ip,
 348                        sizeof(ib_spec->ipv6.mask.dst_ip));
 349                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 350                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 351                        &ib_spec->ipv6.val.dst_ip,
 352                        sizeof(ib_spec->ipv6.val.dst_ip));
 353
 354                 set_tos(headers_c, headers_v,
 355                         ib_spec->ipv6.mask.traffic_class,
 356                         ib_spec->ipv6.val.traffic_class);
 357
 358                 if (set_proto(headers_c, headers_v,
 359                               ib_spec->ipv6.mask.next_hdr,
 360                               ib_spec->ipv6.val.next_hdr))
 361                         return -EINVAL;
 362
 363                 set_flow_label(misc_params_c, misc_params_v,
 364                                ntohl(ib_spec->ipv6.mask.flow_label),
 365                                ntohl(ib_spec->ipv6.val.flow_label),
 366                                ib_spec->type & IB_FLOW_SPEC_INNER);
 367                 break;
 368         case IB_FLOW_SPEC_ESP:
 369                 if (ib_spec->esp.mask.seq)
 370                         return -EOPNOTSUPP;
 371
 372                 MLX5_SET(fte_match_set_misc, misc_params_c, outer_esp_spi,
 373                          ntohl(ib_spec->esp.mask.spi));
 374                 MLX5_SET(fte_match_set_misc, misc_params_v, outer_esp_spi,
 375                          ntohl(ib_spec->esp.val.spi));
 376                 break;
 377         case IB_FLOW_SPEC_TCP:
 378                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
 379                                          LAST_TCP_UDP_FIELD))
 380                         return -EOPNOTSUPP;
 381
 382                 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_TCP))
 383                         return -EINVAL;
 384
 385                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport,
 386                          ntohs(ib_spec->tcp_udp.mask.src_port));
 387                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport,
 388                          ntohs(ib_spec->tcp_udp.val.src_port));
 389
 390                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport,
 391                          ntohs(ib_spec->tcp_udp.mask.dst_port));
 392                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport,
 393                          ntohs(ib_spec->tcp_udp.val.dst_port));
 394                 break;
 395         case IB_FLOW_SPEC_UDP:
 396                 if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
 397                                          LAST_TCP_UDP_FIELD))
 398                         return -EOPNOTSUPP;
 399
 400                 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_UDP))
 401                         return -EINVAL;
 402
 403                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport,
 404                          ntohs(ib_spec->tcp_udp.mask.src_port));
 405                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport,
 406                          ntohs(ib_spec->tcp_udp.val.src_port));
 407
 408                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport,
 409                          ntohs(ib_spec->tcp_udp.mask.dst_port));
 410                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport,
 411                          ntohs(ib_spec->tcp_udp.val.dst_port));
 412                 break;
 413         case IB_FLOW_SPEC_GRE:
 414                 if (ib_spec->gre.mask.c_ks_res0_ver)
 415                         return -EOPNOTSUPP;
 416
 417                 if (set_proto(headers_c, headers_v, 0xff, IPPROTO_GRE))
 418                         return -EINVAL;
 419
 420                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
 421                          0xff);
 422                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
 423                          IPPROTO_GRE);
 424
 425                 MLX5_SET(fte_match_set_misc, misc_params_c, gre_protocol,
 426                          ntohs(ib_spec->gre.mask.protocol));
 427                 MLX5_SET(fte_match_set_misc, misc_params_v, gre_protocol,
 428                          ntohs(ib_spec->gre.val.protocol));
 429
 430                 memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_c,
 431                                     gre_key.nvgre.hi),
 432                        &ib_spec->gre.mask.key,
 433                        sizeof(ib_spec->gre.mask.key));
 434                 memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_v,
 435                                     gre_key.nvgre.hi),
 436                        &ib_spec->gre.val.key,
 437                        sizeof(ib_spec->gre.val.key));
 438                 break;
 439         case IB_FLOW_SPEC_MPLS:
 440                 switch (prev_type) {
 441                 case IB_FLOW_SPEC_UDP:
 442                         if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
 443                                                    ft_field_support.outer_first_mpls_over_udp),
 444                                                    &ib_spec->mpls.mask.tag))
 445                                 return -EOPNOTSUPP;
 446
 447                         memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
 448                                             outer_first_mpls_over_udp),
 449                                &ib_spec->mpls.val.tag,
 450                                sizeof(ib_spec->mpls.val.tag));
 451                         memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
 452                                             outer_first_mpls_over_udp),
 453                                &ib_spec->mpls.mask.tag,
 454                                sizeof(ib_spec->mpls.mask.tag));
 455                         break;
 456                 case IB_FLOW_SPEC_GRE:
 457                         if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
 458                                                    ft_field_support.outer_first_mpls_over_gre),
 459                                                    &ib_spec->mpls.mask.tag))
 460                                 return -EOPNOTSUPP;
 461
 462                         memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
 463                                             outer_first_mpls_over_gre),
 464                                &ib_spec->mpls.val.tag,
 465                                sizeof(ib_spec->mpls.val.tag));
 466                         memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
 467                                             outer_first_mpls_over_gre),
 468                                &ib_spec->mpls.mask.tag,
 469                                sizeof(ib_spec->mpls.mask.tag));
 470                         break;
 471                 default:
 472                         if (ib_spec->type & IB_FLOW_SPEC_INNER) {
 473                                 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
 474                                                            ft_field_support.inner_first_mpls),
 475                                                            &ib_spec->mpls.mask.tag))
 476                                         return -EOPNOTSUPP;
 477
 478                                 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
 479                                                     inner_first_mpls),
 480                                        &ib_spec->mpls.val.tag,
 481                                        sizeof(ib_spec->mpls.val.tag));
 482                                 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
 483                                                     inner_first_mpls),
 484                                        &ib_spec->mpls.mask.tag,
 485                                        sizeof(ib_spec->mpls.mask.tag));
 486                         } else {
 487                                 if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
 488                                                            ft_field_support.outer_first_mpls),
 489                                                            &ib_spec->mpls.mask.tag))
 490                                         return -EOPNOTSUPP;
 491
 492                                 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
 493                                                     outer_first_mpls),
 494                                        &ib_spec->mpls.val.tag,
 495                                        sizeof(ib_spec->mpls.val.tag));
 496                                 memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
 497                                                     outer_first_mpls),
 498                                        &ib_spec->mpls.mask.tag,
 499                                        sizeof(ib_spec->mpls.mask.tag));
 500                         }
 501                 }
 502                 break;
 503         case IB_FLOW_SPEC_VXLAN_TUNNEL:
 504                 if (FIELDS_NOT_SUPPORTED(ib_spec->tunnel.mask,
 505                                          LAST_TUNNEL_FIELD))
 506                         return -EOPNOTSUPP;
 507
 508                 MLX5_SET(fte_match_set_misc, misc_params_c, vxlan_vni,
 509                          ntohl(ib_spec->tunnel.mask.tunnel_id));
 510                 MLX5_SET(fte_match_set_misc, misc_params_v, vxlan_vni,
 511                          ntohl(ib_spec->tunnel.val.tunnel_id));
 512                 break;
 513         case IB_FLOW_SPEC_ACTION_TAG:
 514                 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_tag,
 515                                          LAST_FLOW_TAG_FIELD))
 516                         return -EOPNOTSUPP;
 517                 if (ib_spec->flow_tag.tag_id >= BIT(24))
 518                         return -EINVAL;
 519
 520                 flow_context->flow_tag = ib_spec->flow_tag.tag_id;
 521                 flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
 522                 break;
 523         case IB_FLOW_SPEC_ACTION_DROP:
 524                 if (FIELDS_NOT_SUPPORTED(ib_spec->drop,
 525                                          LAST_DROP_FIELD))
 526                         return -EOPNOTSUPP;
 527                 action->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
 528                 break;
 529         case IB_FLOW_SPEC_ACTION_HANDLE:
 530                 ret = parse_flow_flow_action(to_mflow_act(ib_spec->action.act),
 531                         flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS, action);
 532                 if (ret)
 533                         return ret;
 534                 break;
 535         case IB_FLOW_SPEC_ACTION_COUNT:
 536                 if (FIELDS_NOT_SUPPORTED(ib_spec->flow_count,
 537                                          LAST_COUNTERS_FIELD))
 538                         return -EOPNOTSUPP;
 539
 540                 /* for now support only one counters spec per flow */
 541                 if (action->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
 542                         return -EINVAL;
 543
 544                 action->counters = ib_spec->flow_count.counters;
 545                 action->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
 546                 break;
 547         default:
 548                 return -EINVAL;
 549         }
 550
 551         return 0;
 552 }
 553
 554 /* If a flow could catch both multicast and unicast packets,
 555  * it won't fall into the multicast flow steering table and this rule
 556  * could steal other multicast packets.
 557  */
 558 static bool flow_is_multicast_only(const struct ib_flow_attr *ib_attr)
 559 {
 560         union ib_flow_spec *flow_spec;
 561
 562         if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
 563             ib_attr->num_of_specs < 1)
 564                 return false;
 565
 566         flow_spec = (union ib_flow_spec *)(ib_attr + 1);
 567         if (flow_spec->type == IB_FLOW_SPEC_IPV4) {
 568                 struct ib_flow_spec_ipv4 *ipv4_spec;
 569
 570                 ipv4_spec = (struct ib_flow_spec_ipv4 *)flow_spec;
 571                 if (ipv4_is_multicast(ipv4_spec->val.dst_ip))
 572                         return true;
 573
 574                 return false;
 575         }
 576
 577         if (flow_spec->type == IB_FLOW_SPEC_ETH) {
 578                 struct ib_flow_spec_eth *eth_spec;
 579
 580                 eth_spec = (struct ib_flow_spec_eth *)flow_spec;
 581                 return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
 582                        is_multicast_ether_addr(eth_spec->val.dst_mac);
 583         }
 584
 585         return false;
 586 }
 587
 588 enum valid_spec {
 589         VALID_SPEC_INVALID,
 590         VALID_SPEC_VALID,
 591         VALID_SPEC_NA,
 592 };
 593
 594 static enum valid_spec
 595 is_valid_esp_aes_gcm(struct mlx5_core_dev *mdev,
 596                      const struct mlx5_flow_spec *spec,
 597                      const struct mlx5_flow_act *flow_act,
 598                      bool egress)
 599 {
 600         const u32 *match_c = spec->match_criteria;
 601         bool is_crypto =
 602                 (flow_act->action & (MLX5_FLOW_CONTEXT_ACTION_ENCRYPT |
 603                                      MLX5_FLOW_CONTEXT_ACTION_DECRYPT));
 604         bool is_ipsec = mlx5_fs_is_ipsec_flow(match_c);
 605         bool is_drop = flow_act->action & MLX5_FLOW_CONTEXT_ACTION_DROP;
 606
 607         /*
 608          * Currently only crypto is supported in egress, when regular egress
 609          * rules would be supported, always return VALID_SPEC_NA.
 610          */
 611         if (!is_crypto)
 612                 return VALID_SPEC_NA;
 613
 614         return is_crypto && is_ipsec &&
 615                 (!egress || (!is_drop &&
 616                              !(spec->flow_context.flags & FLOW_CONTEXT_HAS_TAG))) ?
 617                 VALID_SPEC_VALID : VALID_SPEC_INVALID;
 618 }
 619
 620 static bool is_valid_spec(struct mlx5_core_dev *mdev,
 621                           const struct mlx5_flow_spec *spec,
 622                           const struct mlx5_flow_act *flow_act,
 623                           bool egress)
 624 {
 625         /* We curretly only support ipsec egress flow */
 626         return is_valid_esp_aes_gcm(mdev, spec, flow_act, egress) != VALID_SPEC_INVALID;
 627 }
 628
 629 static bool is_valid_ethertype(struct mlx5_core_dev *mdev,
 630                                const struct ib_flow_attr *flow_attr,
 631                                bool check_inner)
 632 {
 633         union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
 634         int match_ipv = check_inner ?
 635                         MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
 636                                         ft_field_support.inner_ip_version) :
 637                         MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
 638                                         ft_field_support.outer_ip_version);
 639         int inner_bit = check_inner ? IB_FLOW_SPEC_INNER : 0;
 640         bool ipv4_spec_valid, ipv6_spec_valid;
 641         unsigned int ip_spec_type = 0;
 642         bool has_ethertype = false;
 643         unsigned int spec_index;
 644         bool mask_valid = true;
 645         u16 eth_type = 0;
 646         bool type_valid;
 647
 648         /* Validate that ethertype is correct */
 649         for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
 650                 if ((ib_spec->type == (IB_FLOW_SPEC_ETH | inner_bit)) &&
 651                     ib_spec->eth.mask.ether_type) {
 652                         mask_valid = (ib_spec->eth.mask.ether_type ==
 653                                       htons(0xffff));
 654                         has_ethertype = true;
 655                         eth_type = ntohs(ib_spec->eth.val.ether_type);
 656                 } else if ((ib_spec->type == (IB_FLOW_SPEC_IPV4 | inner_bit)) ||
 657                            (ib_spec->type == (IB_FLOW_SPEC_IPV6 | inner_bit))) {
 658                         ip_spec_type = ib_spec->type;
 659                 }
 660                 ib_spec = (void *)ib_spec + ib_spec->size;
 661         }
 662
 663         type_valid = (!has_ethertype) || (!ip_spec_type);
 664         if (!type_valid && mask_valid) {
 665                 ipv4_spec_valid = (eth_type == ETH_P_IP) &&
 666                         (ip_spec_type == (IB_FLOW_SPEC_IPV4 | inner_bit));
 667                 ipv6_spec_valid = (eth_type == ETH_P_IPV6) &&
 668                         (ip_spec_type == (IB_FLOW_SPEC_IPV6 | inner_bit));
 669
 670                 type_valid = (ipv4_spec_valid) || (ipv6_spec_valid) ||
 671                              (((eth_type == ETH_P_MPLS_UC) ||
 672                                (eth_type == ETH_P_MPLS_MC)) && match_ipv);
 673         }
 674
 675         return type_valid;
 676 }
 677
 678 static bool is_valid_attr(struct mlx5_core_dev *mdev,
 679                           const struct ib_flow_attr *flow_attr)
 680 {
 681         return is_valid_ethertype(mdev, flow_attr, false) &&
 682                is_valid_ethertype(mdev, flow_attr, true);
 683 }
 684
 685 static void put_flow_table(struct mlx5_ib_dev *dev,
 686                            struct mlx5_ib_flow_prio *prio, bool ft_added)
 687 {
 688         prio->refcount -= !!ft_added;
 689         if (!prio->refcount) {
 690                 mlx5_destroy_flow_table(prio->flow_table);
 691                 prio->flow_table = NULL;
 692         }
 693 }
 694
 695 static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
 696 {
 697         struct mlx5_ib_flow_handler *handler = container_of(flow_id,
 698                                                           struct mlx5_ib_flow_handler,
 699                                                           ibflow);
 700         struct mlx5_ib_flow_handler *iter, *tmp;
 701         struct mlx5_ib_dev *dev = handler->dev;
 702
 703         mutex_lock(&dev->flow_db->lock);
 704
 705         list_for_each_entry_safe(iter, tmp, &handler->list, list) {
 706                 mlx5_del_flow_rules(iter->rule);
 707                 put_flow_table(dev, iter->prio, true);
 708                 list_del(&iter->list);
 709                 kfree(iter);
 710         }
 711
 712         mlx5_del_flow_rules(handler->rule);
 713         put_flow_table(dev, handler->prio, true);
 714         mlx5_ib_counters_clear_description(handler->ibcounters);
 715         mutex_unlock(&dev->flow_db->lock);
 716         if (handler->flow_matcher)
 717                 atomic_dec(&handler->flow_matcher->usecnt);
 718         kfree(handler);
 719
 720         return 0;
 721 }
 722
 723 static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap)
 724 {
 725         priority *= 2;
 726         if (!dont_trap)
 727                 priority++;
 728         return priority;
 729 }
 730
 731 enum flow_table_type {
 732         MLX5_IB_FT_RX,
 733         MLX5_IB_FT_TX
 734 };
 735
 736 #define MLX5_FS_MAX_TYPES        6
 737 #define MLX5_FS_MAX_ENTRIES      BIT(16)
 738
 739 static struct mlx5_ib_flow_prio *_get_prio(struct mlx5_flow_namespace *ns,
 740                                            struct mlx5_ib_flow_prio *prio,
 741                                            int priority,
 742                                            int num_entries, int num_groups,
 743                                            u32 flags)
 744 {
 745         struct mlx5_flow_table_attr ft_attr = {};
 746         struct mlx5_flow_table *ft;
 747
 748         ft_attr.prio = priority;
 749         ft_attr.max_fte = num_entries;
 750         ft_attr.flags = flags;
 751         ft_attr.autogroup.max_num_groups = num_groups;
 752         ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr);
 753         if (IS_ERR(ft))
 754                 return ERR_CAST(ft);
 755
 756         prio->flow_table = ft;
 757         prio->refcount = 0;
 758         return prio;
 759 }
 760
 761 static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
 762                                                 struct ib_flow_attr *flow_attr,
 763                                                 enum flow_table_type ft_type)
 764 {
 765         bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP;
 766         struct mlx5_flow_namespace *ns = NULL;
 767         enum mlx5_flow_namespace_type fn_type;
 768         struct mlx5_ib_flow_prio *prio;
 769         struct mlx5_flow_table *ft;
 770         int max_table_size;
 771         int num_entries;
 772         int num_groups;
 773         bool esw_encap;
 774         u32 flags = 0;
 775         int priority;
 776
 777         max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
 778                                                        log_max_ft_size));
 779         esw_encap = mlx5_eswitch_get_encap_mode(dev->mdev) !=
 780                 DEVLINK_ESWITCH_ENCAP_MODE_NONE;
 781         switch (flow_attr->type) {
 782         case IB_FLOW_ATTR_NORMAL:
 783                 if (flow_is_multicast_only(flow_attr) && !dont_trap)
 784                         priority = MLX5_IB_FLOW_MCAST_PRIO;
 785                 else
 786                         priority = ib_prio_to_core_prio(flow_attr->priority,
 787                                                         dont_trap);
 788                 if (ft_type == MLX5_IB_FT_RX) {
 789                         fn_type = MLX5_FLOW_NAMESPACE_BYPASS;
 790                         prio = &dev->flow_db->prios[priority];
 791                         if (!dev->is_rep && !esw_encap &&
 792                             MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap))
 793                                 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
 794                         if (!dev->is_rep && !esw_encap &&
 795                             MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
 796                                                       reformat_l3_tunnel_to_l2))
 797                                 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
 798                 } else {
 799                         max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_TX(
 800                                 dev->mdev, log_max_ft_size));
 801                         fn_type = MLX5_FLOW_NAMESPACE_EGRESS;
 802                         prio = &dev->flow_db->egress_prios[priority];
 803                         if (!dev->is_rep && !esw_encap &&
 804                             MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat))
 805                                 flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
 806                 }
 807                 ns = mlx5_get_flow_namespace(dev->mdev, fn_type);
 808                 num_entries = MLX5_FS_MAX_ENTRIES;
 809                 num_groups = MLX5_FS_MAX_TYPES;
 810                 break;
 811         case IB_FLOW_ATTR_ALL_DEFAULT:
 812         case IB_FLOW_ATTR_MC_DEFAULT:
 813                 ns = mlx5_get_flow_namespace(dev->mdev,
 814                                              MLX5_FLOW_NAMESPACE_LEFTOVERS);
 815                 build_leftovers_ft_param(&priority, &num_entries, &num_groups);
 816                 prio = &dev->flow_db->prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
 817                 break;
 818         case IB_FLOW_ATTR_SNIFFER:
 819                 if (!MLX5_CAP_FLOWTABLE(dev->mdev,
 820                                         allow_sniffer_and_nic_rx_shared_tir))
 821                         return ERR_PTR(-EOPNOTSUPP);
 822
 823                 ns = mlx5_get_flow_namespace(
 824                         dev->mdev, ft_type == MLX5_IB_FT_RX ?
 825                                            MLX5_FLOW_NAMESPACE_SNIFFER_RX :
 826                                            MLX5_FLOW_NAMESPACE_SNIFFER_TX);
 827
 828                 prio = &dev->flow_db->sniffer[ft_type];
 829                 priority = 0;
 830                 num_entries = 1;
 831                 num_groups = 1;
 832                 break;
 833         default:
 834                 break;
 835         }
 836
 837         if (!ns)
 838                 return ERR_PTR(-EOPNOTSUPP);
 839
 840         max_table_size = min_t(int, num_entries, max_table_size);
 841
 842         ft = prio->flow_table;
 843         if (!ft)
 844                 return _get_prio(ns, prio, priority, max_table_size, num_groups,
 845                                  flags);
 846
 847         return prio;
 848 }
 849
 850 static void set_underlay_qp(struct mlx5_ib_dev *dev,
 851                             struct mlx5_flow_spec *spec,
 852                             u32 underlay_qpn)
 853 {
 854         void *misc_params_c = MLX5_ADDR_OF(fte_match_param,
 855                                            spec->match_criteria,
 856                                            misc_parameters);
 857         void *misc_params_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 858                                            misc_parameters);
 859
 860         if (underlay_qpn &&
 861             MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
 862                                       ft_field_support.bth_dst_qp)) {
 863                 MLX5_SET(fte_match_set_misc,
 864                          misc_params_v, bth_dst_qp, underlay_qpn);
 865                 MLX5_SET(fte_match_set_misc,
 866                          misc_params_c, bth_dst_qp, 0xffffff);
 867         }
 868 }
 869
 870 static void mlx5_ib_set_rule_source_port(struct mlx5_ib_dev *dev,
 871                                          struct mlx5_flow_spec *spec,
 872                                          struct mlx5_eswitch_rep *rep)
 873 {
 874         struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
 875         void *misc;
 876
 877         if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
 878                 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 879                                     misc_parameters_2);
 880
 881                 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
 882                          mlx5_eswitch_get_vport_metadata_for_match(rep->esw,
 883                                                                    rep->vport));
 884                 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 885                                     misc_parameters_2);
 886
 887                 MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
 888                          mlx5_eswitch_get_vport_metadata_mask());
 889         } else {
 890                 misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 891                                     misc_parameters);
 892
 893                 MLX5_SET(fte_match_set_misc, misc, source_port, rep->vport);
 894
 895                 misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 896                                     misc_parameters);
 897
 898                 MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
 899         }
 900 }
 901
 902 static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
 903                                                       struct mlx5_ib_flow_prio *ft_prio,
 904                                                       const struct ib_flow_attr *flow_attr,
 905                                                       struct mlx5_flow_destination *dst,
 906                                                       u32 underlay_qpn,
 907                                                       struct mlx5_ib_create_flow *ucmd)
 908 {
 909         struct mlx5_flow_table  *ft = ft_prio->flow_table;
 910         struct mlx5_ib_flow_handler *handler;
 911         struct mlx5_flow_act flow_act = {};
 912         struct mlx5_flow_spec *spec;
 913         struct mlx5_flow_destination dest_arr[2] = {};
 914         struct mlx5_flow_destination *rule_dst = dest_arr;
 915         const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr);
 916         unsigned int spec_index;
 917         u32 prev_type = 0;
 918         int err = 0;
 919         int dest_num = 0;
 920         bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS;
 921
 922         if (!is_valid_attr(dev->mdev, flow_attr))
 923                 return ERR_PTR(-EINVAL);
 924
 925         if (dev->is_rep && is_egress)
 926                 return ERR_PTR(-EINVAL);
 927
 928         spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
 929         handler = kzalloc(sizeof(*handler), GFP_KERNEL);
 930         if (!handler || !spec) {
 931                 err = -ENOMEM;
 932                 goto free;
 933         }
 934
 935         INIT_LIST_HEAD(&handler->list);
 936
 937         for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
 938                 err = parse_flow_attr(dev->mdev, spec,
 939                                       ib_flow, flow_attr, &flow_act,
 940                                       prev_type);
 941                 if (err < 0)
 942                         goto free;
 943
 944                 prev_type = ((union ib_flow_spec *)ib_flow)->type;
 945                 ib_flow += ((union ib_flow_spec *)ib_flow)->size;
 946         }
 947
 948         if (dst && !(flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP)) {
 949                 memcpy(&dest_arr[0], dst, sizeof(*dst));
 950                 dest_num++;
 951         }
 952
 953         if (!flow_is_multicast_only(flow_attr))
 954                 set_underlay_qp(dev, spec, underlay_qpn);
 955
 956         if (dev->is_rep && flow_attr->type != IB_FLOW_ATTR_SNIFFER) {
 957                 struct mlx5_eswitch_rep *rep;
 958
 959                 rep = dev->port[flow_attr->port - 1].rep;
 960                 if (!rep) {
 961                         err = -EINVAL;
 962                         goto free;
 963                 }
 964
 965                 mlx5_ib_set_rule_source_port(dev, spec, rep);
 966         }
 967
 968         spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria);
 969
 970         if (is_egress &&
 971             !is_valid_spec(dev->mdev, spec, &flow_act, is_egress)) {
 972                 err = -EINVAL;
 973                 goto free;
 974         }
 975
 976         if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
 977                 struct mlx5_ib_mcounters *mcounters;
 978
 979                 err = mlx5_ib_flow_counters_set_data(flow_act.counters, ucmd);
 980                 if (err)
 981                         goto free;
 982
 983                 mcounters = to_mcounters(flow_act.counters);
 984                 handler->ibcounters = flow_act.counters;
 985                 dest_arr[dest_num].type =
 986                         MLX5_FLOW_DESTINATION_TYPE_COUNTER;
 987                 dest_arr[dest_num].counter_id =
 988                         mlx5_fc_id(mcounters->hw_cntrs_hndl);
 989                 dest_num++;
 990         }
 991
 992         if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP) {
 993                 if (!dest_num)
 994                         rule_dst = NULL;
 995         } else {
 996                 if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)
 997                         flow_act.action |=
 998                                 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
 999                 if (is_egress)
1000                         flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW;
1001                 else if (dest_num)
1002                         flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1003         }
1004
1005         if ((spec->flow_context.flags & FLOW_CONTEXT_HAS_TAG)  &&
1006             (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
1007              flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
1008                 mlx5_ib_warn(dev, "Flow tag %u and attribute type %x isn't allowed in leftovers\n",
1009                              spec->flow_context.flow_tag, flow_attr->type);
1010                 err = -EINVAL;
1011                 goto free;
1012         }
1013         handler->rule = mlx5_add_flow_rules(ft, spec,
1014                                             &flow_act,
1015                                             rule_dst, dest_num);
1016
1017         if (IS_ERR(handler->rule)) {
1018                 err = PTR_ERR(handler->rule);
1019                 goto free;
1020         }
1021
1022         ft_prio->refcount++;
1023         handler->prio = ft_prio;
1024         handler->dev = dev;
1025
1026         ft_prio->flow_table = ft;
1027 free:
1028         if (err && handler) {
1029                 mlx5_ib_counters_clear_description(handler->ibcounters);
1030                 kfree(handler);
1031         }
1032         kvfree(spec);
1033         return err ? ERR_PTR(err) : handler;
1034 }
1035
1036 static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
1037                                                      struct mlx5_ib_flow_prio *ft_prio,
1038                                                      const struct ib_flow_attr *flow_attr,
1039                                                      struct mlx5_flow_destination *dst)
1040 {
1041         return _create_flow_rule(dev, ft_prio, flow_attr, dst, 0, NULL);
1042 }
1043
1044 enum {
1045         LEFTOVERS_MC,
1046         LEFTOVERS_UC,
1047 };
1048
1049 static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
1050                                                           struct mlx5_ib_flow_prio *ft_prio,
1051                                                           struct ib_flow_attr *flow_attr,
1052                                                           struct mlx5_flow_destination *dst)
1053 {
1054         struct mlx5_ib_flow_handler *handler_ucast = NULL;
1055         struct mlx5_ib_flow_handler *handler = NULL;
1056
1057         static struct {
1058                 struct ib_flow_attr     flow_attr;
1059                 struct ib_flow_spec_eth eth_flow;
1060         } leftovers_specs[] = {
1061                 [LEFTOVERS_MC] = {
1062                         .flow_attr = {
1063                                 .num_of_specs = 1,
1064                                 .size = sizeof(leftovers_specs[0])
1065                         },
1066                         .eth_flow = {
1067                                 .type = IB_FLOW_SPEC_ETH,
1068                                 .size = sizeof(struct ib_flow_spec_eth),
1069                                 .mask = {.dst_mac = {0x1} },
1070                                 .val =  {.dst_mac = {0x1} }
1071                         }
1072                 },
1073                 [LEFTOVERS_UC] = {
1074                         .flow_attr = {
1075                                 .num_of_specs = 1,
1076                                 .size = sizeof(leftovers_specs[0])
1077                         },
1078                         .eth_flow = {
1079                                 .type = IB_FLOW_SPEC_ETH,
1080                                 .size = sizeof(struct ib_flow_spec_eth),
1081                                 .mask = {.dst_mac = {0x1} },
1082                                 .val = {.dst_mac = {} }
1083                         }
1084                 }
1085         };
1086
1087         handler = create_flow_rule(dev, ft_prio,
1088                                    &leftovers_specs[LEFTOVERS_MC].flow_attr,
1089                                    dst);
1090         if (!IS_ERR(handler) &&
1091             flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
1092                 handler_ucast = create_flow_rule(dev, ft_prio,
1093                                                  &leftovers_specs[LEFTOVERS_UC].flow_attr,
1094                                                  dst);
1095                 if (IS_ERR(handler_ucast)) {
1096                         mlx5_del_flow_rules(handler->rule);
1097                         ft_prio->refcount--;
1098                         kfree(handler);
1099                         handler = handler_ucast;
1100                 } else {
1101                         list_add(&handler_ucast->list, &handler->list);
1102                 }
1103         }
1104
1105         return handler;
1106 }
1107
1108 static struct mlx5_ib_flow_handler *create_sniffer_rule(struct mlx5_ib_dev *dev,
1109                                                         struct mlx5_ib_flow_prio *ft_rx,
1110                                                         struct mlx5_ib_flow_prio *ft_tx,
1111                                                         struct mlx5_flow_destination *dst)
1112 {
1113         struct mlx5_ib_flow_handler *handler_rx;
1114         struct mlx5_ib_flow_handler *handler_tx;
1115         int err;
1116         static const struct ib_flow_attr flow_attr  = {
1117                 .num_of_specs = 0,
1118                 .type = IB_FLOW_ATTR_SNIFFER,
1119                 .size = sizeof(flow_attr)
1120         };
1121
1122         handler_rx = create_flow_rule(dev, ft_rx, &flow_attr, dst);
1123         if (IS_ERR(handler_rx)) {
1124                 err = PTR_ERR(handler_rx);
1125                 goto err;
1126         }
1127
1128         handler_tx = create_flow_rule(dev, ft_tx, &flow_attr, dst);
1129         if (IS_ERR(handler_tx)) {
1130                 err = PTR_ERR(handler_tx);
1131                 goto err_tx;
1132         }
1133
1134         list_add(&handler_tx->list, &handler_rx->list);
1135
1136         return handler_rx;
1137
1138 err_tx:
1139         mlx5_del_flow_rules(handler_rx->rule);
1140         ft_rx->refcount--;
1141         kfree(handler_rx);
1142 err:
1143         return ERR_PTR(err);
1144 }
1145
1146 static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
1147                                            struct ib_flow_attr *flow_attr,
1148                                            struct ib_udata *udata)
1149 {
1150         struct mlx5_ib_dev *dev = to_mdev(qp->device);
1151         struct mlx5_ib_qp *mqp = to_mqp(qp);
1152         struct mlx5_ib_flow_handler *handler = NULL;
1153         struct mlx5_flow_destination *dst = NULL;
1154         struct mlx5_ib_flow_prio *ft_prio_tx = NULL;
1155         struct mlx5_ib_flow_prio *ft_prio;
1156         bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS;
1157         struct mlx5_ib_create_flow *ucmd = NULL, ucmd_hdr;
1158         size_t min_ucmd_sz, required_ucmd_sz;
1159         int err;
1160         int underlay_qpn;
1161
1162         if (udata && udata->inlen) {
1163                 min_ucmd_sz = offsetofend(struct mlx5_ib_create_flow, reserved);
1164                 if (udata->inlen < min_ucmd_sz)
1165                         return ERR_PTR(-EOPNOTSUPP);
1166
1167                 err = ib_copy_from_udata(&ucmd_hdr, udata, min_ucmd_sz);
1168                 if (err)
1169                         return ERR_PTR(err);
1170
1171                 /* currently supports only one counters data */
1172                 if (ucmd_hdr.ncounters_data > 1)
1173                         return ERR_PTR(-EINVAL);
1174
1175                 required_ucmd_sz = min_ucmd_sz +
1176                         sizeof(struct mlx5_ib_flow_counters_data) *
1177                         ucmd_hdr.ncounters_data;
1178                 if (udata->inlen > required_ucmd_sz &&
1179                     !ib_is_udata_cleared(udata, required_ucmd_sz,
1180                                          udata->inlen - required_ucmd_sz))
1181                         return ERR_PTR(-EOPNOTSUPP);
1182
1183                 ucmd = kzalloc(required_ucmd_sz, GFP_KERNEL);
1184                 if (!ucmd)
1185                         return ERR_PTR(-ENOMEM);
1186
1187                 err = ib_copy_from_udata(ucmd, udata, required_ucmd_sz);
1188                 if (err)
1189                         goto free_ucmd;
1190         }
1191
1192         if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO) {
1193                 err = -ENOMEM;
1194                 goto free_ucmd;
1195         }
1196
1197         if (flow_attr->flags &
1198             ~(IB_FLOW_ATTR_FLAGS_DONT_TRAP | IB_FLOW_ATTR_FLAGS_EGRESS)) {
1199                 err = -EINVAL;
1200                 goto free_ucmd;
1201         }
1202
1203         if (is_egress &&
1204             (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
1205              flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
1206                 err = -EINVAL;
1207                 goto free_ucmd;
1208         }
1209
1210         dst = kzalloc(sizeof(*dst), GFP_KERNEL);
1211         if (!dst) {
1212                 err = -ENOMEM;
1213                 goto free_ucmd;
1214         }
1215
1216         mutex_lock(&dev->flow_db->lock);
1217
1218         ft_prio = get_flow_table(dev, flow_attr,
1219                                  is_egress ? MLX5_IB_FT_TX : MLX5_IB_FT_RX);
1220         if (IS_ERR(ft_prio)) {
1221                 err = PTR_ERR(ft_prio);
1222                 goto unlock;
1223         }
1224         if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
1225                 ft_prio_tx = get_flow_table(dev, flow_attr, MLX5_IB_FT_TX);
1226                 if (IS_ERR(ft_prio_tx)) {
1227                         err = PTR_ERR(ft_prio_tx);
1228                         ft_prio_tx = NULL;
1229                         goto destroy_ft;
1230                 }
1231         }
1232
1233         if (is_egress) {
1234                 dst->type = MLX5_FLOW_DESTINATION_TYPE_PORT;
1235         } else {
1236                 dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1237                 if (mqp->is_rss)
1238                         dst->tir_num = mqp->rss_qp.tirn;
1239                 else
1240                         dst->tir_num = mqp->raw_packet_qp.rq.tirn;
1241         }
1242
1243         switch (flow_attr->type) {
1244         case IB_FLOW_ATTR_NORMAL:
1245                 underlay_qpn = (mqp->flags & IB_QP_CREATE_SOURCE_QPN) ?
1246                                        mqp->underlay_qpn :
1247                                        0;
1248                 handler = _create_flow_rule(dev, ft_prio, flow_attr, dst,
1249                                             underlay_qpn, ucmd);
1250                 break;
1251         case IB_FLOW_ATTR_ALL_DEFAULT:
1252         case IB_FLOW_ATTR_MC_DEFAULT:
1253                 handler = create_leftovers_rule(dev, ft_prio, flow_attr, dst);
1254                 break;
1255         case IB_FLOW_ATTR_SNIFFER:
1256                 handler = create_sniffer_rule(dev, ft_prio, ft_prio_tx, dst);
1257                 break;
1258         default:
1259                 err = -EINVAL;
1260                 goto destroy_ft;
1261         }
1262
1263         if (IS_ERR(handler)) {
1264                 err = PTR_ERR(handler);
1265                 handler = NULL;
1266                 goto destroy_ft;
1267         }
1268
1269         mutex_unlock(&dev->flow_db->lock);
1270         kfree(dst);
1271         kfree(ucmd);
1272
1273         return &handler->ibflow;
1274
1275 destroy_ft:
1276         put_flow_table(dev, ft_prio, false);
1277         if (ft_prio_tx)
1278                 put_flow_table(dev, ft_prio_tx, false);
1279 unlock:
1280         mutex_unlock(&dev->flow_db->lock);
1281         kfree(dst);
1282 free_ucmd:
1283         kfree(ucmd);
1284         return ERR_PTR(err);
1285 }
1286
1287 static struct mlx5_ib_flow_prio *
1288 _get_flow_table(struct mlx5_ib_dev *dev,
1289                 struct mlx5_ib_flow_matcher *fs_matcher,
1290                 bool mcast)
1291 {
1292         struct mlx5_flow_namespace *ns = NULL;
1293         struct mlx5_ib_flow_prio *prio = NULL;
1294         int max_table_size = 0;
1295         bool esw_encap;
1296         u32 flags = 0;
1297         int priority;
1298
1299         if (mcast)
1300                 priority = MLX5_IB_FLOW_MCAST_PRIO;
1301         else
1302                 priority = ib_prio_to_core_prio(fs_matcher->priority, false);
1303
1304         esw_encap = mlx5_eswitch_get_encap_mode(dev->mdev) !=
1305                 DEVLINK_ESWITCH_ENCAP_MODE_NONE;
1306         switch (fs_matcher->ns_type) {
1307         case MLX5_FLOW_NAMESPACE_BYPASS:
1308                 max_table_size = BIT(
1309                         MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, log_max_ft_size));
1310                 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap) && !esw_encap)
1311                         flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
1312                 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
1313                                               reformat_l3_tunnel_to_l2) &&
1314                     !esw_encap)
1315                         flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
1316                 break;
1317         case MLX5_FLOW_NAMESPACE_EGRESS:
1318                 max_table_size = BIT(
1319                         MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, log_max_ft_size));
1320                 if (MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat) &&
1321                     !esw_encap)
1322                         flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
1323                 break;
1324         case MLX5_FLOW_NAMESPACE_FDB:
1325                 max_table_size = BIT(
1326                         MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, log_max_ft_size));
1327                 if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, decap) && esw_encap)
1328                         flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
1329                 if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev,
1330                                                reformat_l3_tunnel_to_l2) &&
1331                     esw_encap)
1332                         flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
1333                 priority = FDB_BYPASS_PATH;
1334                 break;
1335         case MLX5_FLOW_NAMESPACE_RDMA_RX:
1336                 max_table_size = BIT(
1337                         MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev, log_max_ft_size));
1338                 priority = fs_matcher->priority;
1339                 break;
1340         case MLX5_FLOW_NAMESPACE_RDMA_TX:
1341                 max_table_size = BIT(
1342                         MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev, log_max_ft_size));
1343                 priority = fs_matcher->priority;
1344                 break;
1345         default:
1346                 break;
1347         }
1348
1349         max_table_size = min_t(int, max_table_size, MLX5_FS_MAX_ENTRIES);
1350
1351         ns = mlx5_get_flow_namespace(dev->mdev, fs_matcher->ns_type);
1352         if (!ns)
1353                 return ERR_PTR(-EOPNOTSUPP);
1354
1355         switch (fs_matcher->ns_type) {
1356         case MLX5_FLOW_NAMESPACE_BYPASS:
1357                 prio = &dev->flow_db->prios[priority];
1358                 break;
1359         case MLX5_FLOW_NAMESPACE_EGRESS:
1360                 prio = &dev->flow_db->egress_prios[priority];
1361                 break;
1362         case MLX5_FLOW_NAMESPACE_FDB:
1363                 prio = &dev->flow_db->fdb;
1364                 break;
1365         case MLX5_FLOW_NAMESPACE_RDMA_RX:
1366                 prio = &dev->flow_db->rdma_rx[priority];
1367                 break;
1368         case MLX5_FLOW_NAMESPACE_RDMA_TX:
1369                 prio = &dev->flow_db->rdma_tx[priority];
1370                 break;
1371         default: return ERR_PTR(-EINVAL);
1372         }
1373
1374         if (!prio)
1375                 return ERR_PTR(-EINVAL);
1376
1377         if (prio->flow_table)
1378                 return prio;
1379
1380         return _get_prio(ns, prio, priority, max_table_size,
1381                          MLX5_FS_MAX_TYPES, flags);
1382 }
1383
1384 static struct mlx5_ib_flow_handler *
1385 _create_raw_flow_rule(struct mlx5_ib_dev *dev,
1386                       struct mlx5_ib_flow_prio *ft_prio,
1387                       struct mlx5_flow_destination *dst,
1388                       struct mlx5_ib_flow_matcher  *fs_matcher,
1389                       struct mlx5_flow_context *flow_context,
1390                       struct mlx5_flow_act *flow_act,
1391                       void *cmd_in, int inlen,
1392                       int dst_num)
1393 {
1394         struct mlx5_ib_flow_handler *handler;
1395         struct mlx5_flow_spec *spec;
1396         struct mlx5_flow_table *ft = ft_prio->flow_table;
1397         int err = 0;
1398
1399         spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
1400         handler = kzalloc(sizeof(*handler), GFP_KERNEL);
1401         if (!handler || !spec) {
1402                 err = -ENOMEM;
1403                 goto free;
1404         }
1405
1406         INIT_LIST_HEAD(&handler->list);
1407
1408         memcpy(spec->match_value, cmd_in, inlen);
1409         memcpy(spec->match_criteria, fs_matcher->matcher_mask.match_params,
1410                fs_matcher->mask_len);
1411         spec->match_criteria_enable = fs_matcher->match_criteria_enable;
1412         spec->flow_context = *flow_context;
1413
1414         handler->rule = mlx5_add_flow_rules(ft, spec,
1415                                             flow_act, dst, dst_num);
1416
1417         if (IS_ERR(handler->rule)) {
1418                 err = PTR_ERR(handler->rule);
1419                 goto free;
1420         }
1421
1422         ft_prio->refcount++;
1423         handler->prio = ft_prio;
1424         handler->dev = dev;
1425         ft_prio->flow_table = ft;
1426
1427 free:
1428         if (err)
1429                 kfree(handler);
1430         kvfree(spec);
1431         return err ? ERR_PTR(err) : handler;
1432 }
1433
1434 static bool raw_fs_is_multicast(struct mlx5_ib_flow_matcher *fs_matcher,
1435                                 void *match_v)
1436 {
1437         void *match_c;
1438         void *match_v_set_lyr_2_4, *match_c_set_lyr_2_4;
1439         void *dmac, *dmac_mask;
1440         void *ipv4, *ipv4_mask;
1441
1442         if (!(fs_matcher->match_criteria_enable &
1443               (1 << MATCH_CRITERIA_ENABLE_OUTER_BIT)))
1444                 return false;
1445
1446         match_c = fs_matcher->matcher_mask.match_params;
1447         match_v_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_v,
1448                                            outer_headers);
1449         match_c_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_c,
1450                                            outer_headers);
1451
1452         dmac = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4,
1453                             dmac_47_16);
1454         dmac_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4,
1455                                  dmac_47_16);
1456
1457         if (is_multicast_ether_addr(dmac) &&
1458             is_multicast_ether_addr(dmac_mask))
1459                 return true;
1460
1461         ipv4 = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4,
1462                             dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
1463
1464         ipv4_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4,
1465                                  dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
1466
1467         if (ipv4_is_multicast(*(__be32 *)(ipv4)) &&
1468             ipv4_is_multicast(*(__be32 *)(ipv4_mask)))
1469                 return true;
1470
1471         return false;
1472 }
1473
1474 static struct mlx5_ib_flow_handler *raw_fs_rule_add(
1475         struct mlx5_ib_dev *dev, struct mlx5_ib_flow_matcher *fs_matcher,
1476         struct mlx5_flow_context *flow_context, struct mlx5_flow_act *flow_act,
1477         u32 counter_id, void *cmd_in, int inlen, int dest_id, int dest_type)
1478 {
1479         struct mlx5_flow_destination *dst;
1480         struct mlx5_ib_flow_prio *ft_prio;
1481         struct mlx5_ib_flow_handler *handler;
1482         int dst_num = 0;
1483         bool mcast;
1484         int err;
1485
1486         if (fs_matcher->flow_type != MLX5_IB_FLOW_TYPE_NORMAL)
1487                 return ERR_PTR(-EOPNOTSUPP);
1488
1489         if (fs_matcher->priority > MLX5_IB_FLOW_LAST_PRIO)
1490                 return ERR_PTR(-ENOMEM);
1491
1492         dst = kcalloc(2, sizeof(*dst), GFP_KERNEL);
1493         if (!dst)
1494                 return ERR_PTR(-ENOMEM);
1495
1496         mcast = raw_fs_is_multicast(fs_matcher, cmd_in);
1497         mutex_lock(&dev->flow_db->lock);
1498
1499         ft_prio = _get_flow_table(dev, fs_matcher, mcast);
1500         if (IS_ERR(ft_prio)) {
1501                 err = PTR_ERR(ft_prio);
1502                 goto unlock;
1503         }
1504
1505         switch (dest_type) {
1506         case MLX5_FLOW_DESTINATION_TYPE_TIR:
1507                 dst[dst_num].type = dest_type;
1508                 dst[dst_num++].tir_num = dest_id;
1509                 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1510                 break;
1511         case MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE:
1512                 dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM;
1513                 dst[dst_num++].ft_num = dest_id;
1514                 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1515                 break;
1516         case MLX5_FLOW_DESTINATION_TYPE_PORT:
1517                 dst[dst_num++].type = MLX5_FLOW_DESTINATION_TYPE_PORT;
1518                 flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW;
1519                 break;
1520         default:
1521                 break;
1522         }
1523
1524         if (flow_act->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1525                 dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
1526                 dst[dst_num].counter_id = counter_id;
1527                 dst_num++;
1528         }
1529
1530         handler = _create_raw_flow_rule(dev, ft_prio, dst_num ? dst : NULL,
1531                                         fs_matcher, flow_context, flow_act,
1532                                         cmd_in, inlen, dst_num);
1533
1534         if (IS_ERR(handler)) {
1535                 err = PTR_ERR(handler);
1536                 goto destroy_ft;
1537         }
1538
1539         mutex_unlock(&dev->flow_db->lock);
1540         atomic_inc(&fs_matcher->usecnt);
1541         handler->flow_matcher = fs_matcher;
1542
1543         kfree(dst);
1544
1545         return handler;
1546
1547 destroy_ft:
1548         put_flow_table(dev, ft_prio, false);
1549 unlock:
1550         mutex_unlock(&dev->flow_db->lock);
1551         kfree(dst);
1552
1553         return ERR_PTR(err);
1554 }
1555
1556 static u32 mlx5_ib_flow_action_flags_to_accel_xfrm_flags(u32 mlx5_flags)
1557 {
1558         u32 flags = 0;
1559
1560         if (mlx5_flags & MLX5_IB_UAPI_FLOW_ACTION_FLAGS_REQUIRE_METADATA)
1561                 flags |= MLX5_ACCEL_XFRM_FLAG_REQUIRE_METADATA;
1562
1563         return flags;
1564 }
1565
1566 #define MLX5_FLOW_ACTION_ESP_CREATE_LAST_SUPPORTED                             \
1567         MLX5_IB_UAPI_FLOW_ACTION_FLAGS_REQUIRE_METADATA
1568 static struct ib_flow_action *
1569 mlx5_ib_create_flow_action_esp(struct ib_device *device,
1570                                const struct ib_flow_action_attrs_esp *attr,
1571                                struct uverbs_attr_bundle *attrs)
1572 {
1573         struct mlx5_ib_dev *mdev = to_mdev(device);
1574         struct ib_uverbs_flow_action_esp_keymat_aes_gcm *aes_gcm;
1575         struct mlx5_accel_esp_xfrm_attrs accel_attrs = {};
1576         struct mlx5_ib_flow_action *action;
1577         u64 action_flags;
1578         u64 flags;
1579         int err = 0;
1580
1581         err = uverbs_get_flags64(
1582                 &action_flags, attrs, MLX5_IB_ATTR_CREATE_FLOW_ACTION_FLAGS,
1583                 ((MLX5_FLOW_ACTION_ESP_CREATE_LAST_SUPPORTED << 1) - 1));
1584         if (err)
1585                 return ERR_PTR(err);
1586
1587         flags = mlx5_ib_flow_action_flags_to_accel_xfrm_flags(action_flags);
1588
1589         /* We current only support a subset of the standard features. Only a
1590          * keymat of type AES_GCM, with icv_len == 16, iv_algo == SEQ and esn
1591          * (with overlap). Full offload mode isn't supported.
1592          */
1593         if (!attr->keymat || attr->replay || attr->encap ||
1594             attr->spi || attr->seq || attr->tfc_pad ||
1595             attr->hard_limit_pkts ||
1596             (attr->flags & ~(IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED |
1597                              IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ENCRYPT)))
1598                 return ERR_PTR(-EOPNOTSUPP);
1599
1600         if (attr->keymat->protocol !=
1601             IB_UVERBS_FLOW_ACTION_ESP_KEYMAT_AES_GCM)
1602                 return ERR_PTR(-EOPNOTSUPP);
1603
1604         aes_gcm = &attr->keymat->keymat.aes_gcm;
1605
1606         if (aes_gcm->icv_len != 16 ||
1607             aes_gcm->iv_algo != IB_UVERBS_FLOW_ACTION_IV_ALGO_SEQ)
1608                 return ERR_PTR(-EOPNOTSUPP);
1609
1610         action = kmalloc(sizeof(*action), GFP_KERNEL);
1611         if (!action)
1612                 return ERR_PTR(-ENOMEM);
1613
1614         action->esp_aes_gcm.ib_flags = attr->flags;
1615         memcpy(&accel_attrs.keymat.aes_gcm.aes_key, &aes_gcm->aes_key,
1616                sizeof(accel_attrs.keymat.aes_gcm.aes_key));
1617         accel_attrs.keymat.aes_gcm.key_len = aes_gcm->key_len * 8;
1618         memcpy(&accel_attrs.keymat.aes_gcm.salt, &aes_gcm->salt,
1619                sizeof(accel_attrs.keymat.aes_gcm.salt));
1620         memcpy(&accel_attrs.keymat.aes_gcm.seq_iv, &aes_gcm->iv,
1621                sizeof(accel_attrs.keymat.aes_gcm.seq_iv));
1622         accel_attrs.keymat.aes_gcm.icv_len = aes_gcm->icv_len * 8;
1623         accel_attrs.keymat.aes_gcm.iv_algo = MLX5_ACCEL_ESP_AES_GCM_IV_ALGO_SEQ;
1624         accel_attrs.keymat_type = MLX5_ACCEL_ESP_KEYMAT_AES_GCM;
1625
1626         accel_attrs.esn = attr->esn;
1627         if (attr->flags & IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED)
1628                 accel_attrs.flags |= MLX5_ACCEL_ESP_FLAGS_ESN_TRIGGERED;
1629         if (attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW)
1630                 accel_attrs.flags |= MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP;
1631
1632         if (attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ENCRYPT)
1633                 accel_attrs.action |= MLX5_ACCEL_ESP_ACTION_ENCRYPT;
1634
1635         action->esp_aes_gcm.ctx =
1636                 mlx5_accel_esp_create_xfrm(mdev->mdev, &accel_attrs, flags);
1637         if (IS_ERR(action->esp_aes_gcm.ctx)) {
1638                 err = PTR_ERR(action->esp_aes_gcm.ctx);
1639                 goto err_parse;
1640         }
1641
1642         action->esp_aes_gcm.ib_flags = attr->flags;
1643
1644         return &action->ib_action;
1645
1646 err_parse:
1647         kfree(action);
1648         return ERR_PTR(err);
1649 }
1650
1651 static int
1652 mlx5_ib_modify_flow_action_esp(struct ib_flow_action *action,
1653                                const struct ib_flow_action_attrs_esp *attr,
1654                                struct uverbs_attr_bundle *attrs)
1655 {
1656         struct mlx5_ib_flow_action *maction = to_mflow_act(action);
1657         struct mlx5_accel_esp_xfrm_attrs accel_attrs;
1658         int err = 0;
1659
1660         if (attr->keymat || attr->replay || attr->encap ||
1661             attr->spi || attr->seq || attr->tfc_pad ||
1662             attr->hard_limit_pkts ||
1663             (attr->flags & ~(IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED |
1664                              IB_FLOW_ACTION_ESP_FLAGS_MOD_ESP_ATTRS |
1665                              IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW)))
1666                 return -EOPNOTSUPP;
1667
1668         /* Only the ESN value or the MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP can
1669          * be modified.
1670          */
1671         if (!(maction->esp_aes_gcm.ib_flags &
1672               IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED) &&
1673             attr->flags & (IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED |
1674                            IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW))
1675                 return -EINVAL;
1676
1677         memcpy(&accel_attrs, &maction->esp_aes_gcm.ctx->attrs,
1678                sizeof(accel_attrs));
1679
1680         accel_attrs.esn = attr->esn;
1681         if (attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW)
1682                 accel_attrs.flags |= MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP;
1683         else
1684                 accel_attrs.flags &= ~MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP;
1685
1686         err = mlx5_accel_esp_modify_xfrm(maction->esp_aes_gcm.ctx,
1687                                          &accel_attrs);
1688         if (err)
1689                 return err;
1690
1691         maction->esp_aes_gcm.ib_flags &=
1692                 ~IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW;
1693         maction->esp_aes_gcm.ib_flags |=
1694                 attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW;
1695
1696         return 0;
1697 }
1698
1699 static void destroy_flow_action_raw(struct mlx5_ib_flow_action *maction)
1700 {
1701         switch (maction->flow_action_raw.sub_type) {
1702         case MLX5_IB_FLOW_ACTION_MODIFY_HEADER:
1703                 mlx5_modify_header_dealloc(maction->flow_action_raw.dev->mdev,
1704                                            maction->flow_action_raw.modify_hdr);
1705                 break;
1706         case MLX5_IB_FLOW_ACTION_PACKET_REFORMAT:
1707                 mlx5_packet_reformat_dealloc(maction->flow_action_raw.dev->mdev,
1708                                              maction->flow_action_raw.pkt_reformat);
1709                 break;
1710         case MLX5_IB_FLOW_ACTION_DECAP:
1711                 break;
1712         default:
1713                 break;
1714         }
1715 }
1716
1717 static int mlx5_ib_destroy_flow_action(struct ib_flow_action *action)
1718 {
1719         struct mlx5_ib_flow_action *maction = to_mflow_act(action);
1720
1721         switch (action->type) {
1722         case IB_FLOW_ACTION_ESP:
1723                 /*
1724                  * We only support aes_gcm by now, so we implicitly know this is
1725                  * the underline crypto.
1726                  */
1727                 mlx5_accel_esp_destroy_xfrm(maction->esp_aes_gcm.ctx);
1728                 break;
1729         case IB_FLOW_ACTION_UNSPECIFIED:
1730                 destroy_flow_action_raw(maction);
1731                 break;
1732         default:
1733                 WARN_ON(true);
1734                 break;
1735         }
1736
1737         kfree(maction);
1738         return 0;
1739 }
1740
1741 static int
1742 mlx5_ib_ft_type_to_namespace(enum mlx5_ib_uapi_flow_table_type table_type,
1743                              enum mlx5_flow_namespace_type *namespace)
1744 {
1745         switch (table_type) {
1746         case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX:
1747                 *namespace = MLX5_FLOW_NAMESPACE_BYPASS;
1748                 break;
1749         case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX:
1750                 *namespace = MLX5_FLOW_NAMESPACE_EGRESS;
1751                 break;
1752         case MLX5_IB_UAPI_FLOW_TABLE_TYPE_FDB:
1753                 *namespace = MLX5_FLOW_NAMESPACE_FDB;
1754                 break;
1755         case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_RX:
1756                 *namespace = MLX5_FLOW_NAMESPACE_RDMA_RX;
1757                 break;
1758         case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_TX:
1759                 *namespace = MLX5_FLOW_NAMESPACE_RDMA_TX;
1760                 break;
1761         default:
1762                 return -EINVAL;
1763         }
1764
1765         return 0;
1766 }
1767
1768 static const struct uverbs_attr_spec mlx5_ib_flow_type[] = {
1769         [MLX5_IB_FLOW_TYPE_NORMAL] = {
1770                 .type = UVERBS_ATTR_TYPE_PTR_IN,
1771                 .u.ptr = {
1772                         .len = sizeof(u16), /* data is priority */
1773                         .min_len = sizeof(u16),
1774                 }
1775         },
1776         [MLX5_IB_FLOW_TYPE_SNIFFER] = {
1777                 .type = UVERBS_ATTR_TYPE_PTR_IN,
1778                 UVERBS_ATTR_NO_DATA(),
1779         },
1780         [MLX5_IB_FLOW_TYPE_ALL_DEFAULT] = {
1781                 .type = UVERBS_ATTR_TYPE_PTR_IN,
1782                 UVERBS_ATTR_NO_DATA(),
1783         },
1784         [MLX5_IB_FLOW_TYPE_MC_DEFAULT] = {
1785                 .type = UVERBS_ATTR_TYPE_PTR_IN,
1786                 UVERBS_ATTR_NO_DATA(),
1787         },
1788 };
1789
1790 static bool is_flow_dest(void *obj, int *dest_id, int *dest_type)
1791 {
1792         struct devx_obj *devx_obj = obj;
1793         u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
1794
1795         switch (opcode) {
1796         case MLX5_CMD_OP_DESTROY_TIR:
1797                 *dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1798                 *dest_id = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox,
1799                                     obj_id);
1800                 return true;
1801
1802         case MLX5_CMD_OP_DESTROY_FLOW_TABLE:
1803                 *dest_type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
1804                 *dest_id = MLX5_GET(destroy_flow_table_in, devx_obj->dinbox,
1805                                     table_id);
1806                 return true;
1807         default:
1808                 return false;
1809         }
1810 }
1811
1812 static int get_dests(struct uverbs_attr_bundle *attrs,
1813                      struct mlx5_ib_flow_matcher *fs_matcher, int *dest_id,
1814                      int *dest_type, struct ib_qp **qp, u32 *flags)
1815 {
1816         bool dest_devx, dest_qp;
1817         void *devx_obj;
1818         int err;
1819
1820         dest_devx = uverbs_attr_is_valid(attrs,
1821                                          MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
1822         dest_qp = uverbs_attr_is_valid(attrs,
1823                                        MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
1824
1825         *flags = 0;
1826         err = uverbs_get_flags32(flags, attrs, MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
1827                                  MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS |
1828                                          MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP);
1829         if (err)
1830                 return err;
1831
1832         /* Both flags are not allowed */
1833         if (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS &&
1834             *flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
1835                 return -EINVAL;
1836
1837         if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_BYPASS) {
1838                 if (dest_devx && (dest_qp || *flags))
1839                         return -EINVAL;
1840                 else if (dest_qp && *flags)
1841                         return -EINVAL;
1842         }
1843
1844         /* Allow only DEVX object, drop as dest for FDB */
1845         if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB && !(dest_devx ||
1846              (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)))
1847                 return -EINVAL;
1848
1849         /* Allow only DEVX object or QP as dest when inserting to RDMA_RX */
1850         if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
1851             ((!dest_devx && !dest_qp) || (dest_devx && dest_qp)))
1852                 return -EINVAL;
1853
1854         *qp = NULL;
1855         if (dest_devx) {
1856                 devx_obj =
1857                         uverbs_attr_get_obj(attrs,
1858                                             MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
1859
1860                 /* Verify that the given DEVX object is a flow
1861                  * steering destination.
1862                  */
1863                 if (!is_flow_dest(devx_obj, dest_id, dest_type))
1864                         return -EINVAL;
1865                 /* Allow only flow table as dest when inserting to FDB or RDMA_RX */
1866                 if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB ||
1867                      fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
1868                     *dest_type != MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE)
1869                         return -EINVAL;
1870         } else if (dest_qp) {
1871                 struct mlx5_ib_qp *mqp;
1872
1873                 *qp = uverbs_attr_get_obj(attrs,
1874                                           MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
1875                 if (IS_ERR(*qp))
1876                         return PTR_ERR(*qp);
1877
1878                 if ((*qp)->qp_type != IB_QPT_RAW_PACKET)
1879                         return -EINVAL;
1880
1881                 mqp = to_mqp(*qp);
1882                 if (mqp->is_rss)
1883                         *dest_id = mqp->rss_qp.tirn;
1884                 else
1885                         *dest_id = mqp->raw_packet_qp.rq.tirn;
1886                 *dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1887         } else if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
1888                     fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX) &&
1889                    !(*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)) {
1890                 *dest_type = MLX5_FLOW_DESTINATION_TYPE_PORT;
1891         }
1892
1893         if (*dest_type == MLX5_FLOW_DESTINATION_TYPE_TIR &&
1894             (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
1895              fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX))
1896                 return -EINVAL;
1897
1898         return 0;
1899 }
1900
1901 static bool is_flow_counter(void *obj, u32 offset, u32 *counter_id)
1902 {
1903         struct devx_obj *devx_obj = obj;
1904         u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
1905
1906         if (opcode == MLX5_CMD_OP_DEALLOC_FLOW_COUNTER) {
1907
1908                 if (offset && offset >= devx_obj->flow_counter_bulk_size)
1909                         return false;
1910
1911                 *counter_id = MLX5_GET(dealloc_flow_counter_in,
1912                                        devx_obj->dinbox,
1913                                        flow_counter_id);
1914                 *counter_id += offset;
1915                 return true;
1916         }
1917
1918         return false;
1919 }
1920
1921 #define MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS 2
1922 static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
1923         struct uverbs_attr_bundle *attrs)
1924 {
1925         struct mlx5_flow_context flow_context = {.flow_tag =
1926                 MLX5_FS_DEFAULT_FLOW_TAG};
1927         u32 *offset_attr, offset = 0, counter_id = 0;
1928         int dest_id, dest_type = -1, inlen, len, ret, i;
1929         struct mlx5_ib_flow_handler *flow_handler;
1930         struct mlx5_ib_flow_matcher *fs_matcher;
1931         struct ib_uobject **arr_flow_actions;
1932         struct ib_uflow_resources *uflow_res;
1933         struct mlx5_flow_act flow_act = {};
1934         struct ib_qp *qp = NULL;
1935         void *devx_obj, *cmd_in;
1936         struct ib_uobject *uobj;
1937         struct mlx5_ib_dev *dev;
1938         u32 flags;
1939
1940         if (!capable(CAP_NET_RAW))
1941                 return -EPERM;
1942
1943         fs_matcher = uverbs_attr_get_obj(attrs,
1944                                          MLX5_IB_ATTR_CREATE_FLOW_MATCHER);
1945         uobj =  uverbs_attr_get_uobject(attrs, MLX5_IB_ATTR_CREATE_FLOW_HANDLE);
1946         dev = mlx5_udata_to_mdev(&attrs->driver_udata);
1947
1948         if (get_dests(attrs, fs_matcher, &dest_id, &dest_type, &qp, &flags))
1949                 return -EINVAL;
1950
1951         if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS)
1952                 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS;
1953
1954         if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
1955                 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
1956
1957         len = uverbs_attr_get_uobjs_arr(attrs,
1958                 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX, &arr_flow_actions);
1959         if (len) {
1960                 devx_obj = arr_flow_actions[0]->object;
1961
1962                 if (uverbs_attr_is_valid(attrs,
1963                                          MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET)) {
1964
1965                         int num_offsets = uverbs_attr_ptr_get_array_size(
1966                                 attrs,
1967                                 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
1968                                 sizeof(u32));
1969
1970                         if (num_offsets != 1)
1971                                 return -EINVAL;
1972
1973                         offset_attr = uverbs_attr_get_alloced_ptr(
1974                                 attrs,
1975                                 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET);
1976                         offset = *offset_attr;
1977                 }
1978
1979                 if (!is_flow_counter(devx_obj, offset, &counter_id))
1980                         return -EINVAL;
1981
1982                 flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
1983         }
1984
1985         cmd_in = uverbs_attr_get_alloced_ptr(
1986                 attrs, MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
1987         inlen = uverbs_attr_get_len(attrs,
1988                                     MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
1989
1990         uflow_res = flow_resources_alloc(MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS);
1991         if (!uflow_res)
1992                 return -ENOMEM;
1993
1994         len = uverbs_attr_get_uobjs_arr(attrs,
1995                 MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS, &arr_flow_actions);
1996         for (i = 0; i < len; i++) {
1997                 struct mlx5_ib_flow_action *maction =
1998                         to_mflow_act(arr_flow_actions[i]->object);
1999
2000                 ret = parse_flow_flow_action(maction, false, &flow_act);
2001                 if (ret)
2002                         goto err_out;
2003                 flow_resources_add(uflow_res, IB_FLOW_SPEC_ACTION_HANDLE,
2004                                    arr_flow_actions[i]->object);
2005         }
2006
2007         ret = uverbs_copy_from(&flow_context.flow_tag, attrs,
2008                                MLX5_IB_ATTR_CREATE_FLOW_TAG);
2009         if (!ret) {
2010                 if (flow_context.flow_tag >= BIT(24)) {
2011                         ret = -EINVAL;
2012                         goto err_out;
2013                 }
2014                 flow_context.flags |= FLOW_CONTEXT_HAS_TAG;
2015         }
2016
2017         flow_handler =
2018                 raw_fs_rule_add(dev, fs_matcher, &flow_context, &flow_act,
2019                                 counter_id, cmd_in, inlen, dest_id, dest_type);
2020         if (IS_ERR(flow_handler)) {
2021                 ret = PTR_ERR(flow_handler);
2022                 goto err_out;
2023         }
2024
2025         ib_set_flow(uobj, &flow_handler->ibflow, qp, &dev->ib_dev, uflow_res);
2026
2027         return 0;
2028 err_out:
2029         ib_uverbs_flow_resources_free(uflow_res);
2030         return ret;
2031 }
2032
2033 static int flow_matcher_cleanup(struct ib_uobject *uobject,
2034                                 enum rdma_remove_reason why,
2035                                 struct uverbs_attr_bundle *attrs)
2036 {
2037         struct mlx5_ib_flow_matcher *obj = uobject->object;
2038
2039         if (atomic_read(&obj->usecnt))
2040                 return -EBUSY;
2041
2042         kfree(obj);
2043         return 0;
2044 }
2045
2046 static int mlx5_ib_matcher_ns(struct uverbs_attr_bundle *attrs,
2047                               struct mlx5_ib_flow_matcher *obj)
2048 {
2049         enum mlx5_ib_uapi_flow_table_type ft_type =
2050                 MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX;
2051         u32 flags;
2052         int err;
2053
2054         /* New users should use MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE and older
2055          * users should switch to it. We leave this to not break userspace
2056          */
2057         if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE) &&
2058             uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS))
2059                 return -EINVAL;
2060
2061         if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE)) {
2062                 err = uverbs_get_const(&ft_type, attrs,
2063                                        MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE);
2064                 if (err)
2065                         return err;
2066
2067                 err = mlx5_ib_ft_type_to_namespace(ft_type, &obj->ns_type);
2068                 if (err)
2069                         return err;
2070
2071                 return 0;
2072         }
2073
2074         if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS)) {
2075                 err = uverbs_get_flags32(&flags, attrs,
2076                                          MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
2077                                          IB_FLOW_ATTR_FLAGS_EGRESS);
2078                 if (err)
2079                         return err;
2080
2081                 if (flags) {
2082                         mlx5_ib_ft_type_to_namespace(
2083                                 MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX,
2084                                 &obj->ns_type);
2085                         return 0;
2086                 }
2087         }
2088
2089         obj->ns_type = MLX5_FLOW_NAMESPACE_BYPASS;
2090
2091         return 0;
2092 }
2093
2094 static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)(
2095         struct uverbs_attr_bundle *attrs)
2096 {
2097         struct ib_uobject *uobj = uverbs_attr_get_uobject(
2098                 attrs, MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE);
2099         struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
2100         struct mlx5_ib_flow_matcher *obj;
2101         int err;
2102
2103         obj = kzalloc(sizeof(struct mlx5_ib_flow_matcher), GFP_KERNEL);
2104         if (!obj)
2105                 return -ENOMEM;
2106
2107         obj->mask_len = uverbs_attr_get_len(
2108                 attrs, MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
2109         err = uverbs_copy_from(&obj->matcher_mask,
2110                                attrs,
2111                                MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
2112         if (err)
2113                 goto end;
2114
2115         obj->flow_type = uverbs_attr_get_enum_id(
2116                 attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
2117
2118         if (obj->flow_type == MLX5_IB_FLOW_TYPE_NORMAL) {
2119                 err = uverbs_copy_from(&obj->priority,
2120                                        attrs,
2121                                        MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
2122                 if (err)
2123                         goto end;
2124         }
2125
2126         err = uverbs_copy_from(&obj->match_criteria_enable,
2127                                attrs,
2128                                MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA);
2129         if (err)
2130                 goto end;
2131
2132         err = mlx5_ib_matcher_ns(attrs, obj);
2133         if (err)
2134                 goto end;
2135
2136         if (obj->ns_type == MLX5_FLOW_NAMESPACE_FDB &&
2137             mlx5_eswitch_mode(dev->mdev) != MLX5_ESWITCH_OFFLOADS) {
2138                 err = -EINVAL;
2139                 goto end;
2140         }
2141
2142         uobj->object = obj;
2143         obj->mdev = dev->mdev;
2144         atomic_set(&obj->usecnt, 0);
2145         return 0;
2146
2147 end:
2148         kfree(obj);
2149         return err;
2150 }
2151
2152 static struct ib_flow_action *
2153 mlx5_ib_create_modify_header(struct mlx5_ib_dev *dev,
2154                              enum mlx5_ib_uapi_flow_table_type ft_type,
2155                              u8 num_actions, void *in)
2156 {
2157         enum mlx5_flow_namespace_type namespace;
2158         struct mlx5_ib_flow_action *maction;
2159         int ret;
2160
2161         ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
2162         if (ret)
2163                 return ERR_PTR(-EINVAL);
2164
2165         maction = kzalloc(sizeof(*maction), GFP_KERNEL);
2166         if (!maction)
2167                 return ERR_PTR(-ENOMEM);
2168
2169         maction->flow_action_raw.modify_hdr =
2170                 mlx5_modify_header_alloc(dev->mdev, namespace, num_actions, in);
2171
2172         if (IS_ERR(maction->flow_action_raw.modify_hdr)) {
2173                 ret = PTR_ERR(maction->flow_action_raw.modify_hdr);
2174                 kfree(maction);
2175                 return ERR_PTR(ret);
2176         }
2177         maction->flow_action_raw.sub_type =
2178                 MLX5_IB_FLOW_ACTION_MODIFY_HEADER;
2179         maction->flow_action_raw.dev = dev;
2180
2181         return &maction->ib_action;
2182 }
2183
2184 static bool mlx5_ib_modify_header_supported(struct mlx5_ib_dev *dev)
2185 {
2186         return MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
2187                                          max_modify_header_actions) ||
2188                MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev,
2189                                          max_modify_header_actions) ||
2190                MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev,
2191                                          max_modify_header_actions);
2192 }
2193
2194 static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER)(
2195         struct uverbs_attr_bundle *attrs)
2196 {
2197         struct ib_uobject *uobj = uverbs_attr_get_uobject(
2198                 attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE);
2199         struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
2200         enum mlx5_ib_uapi_flow_table_type ft_type;
2201         struct ib_flow_action *action;
2202         int num_actions;
2203         void *in;
2204         int ret;
2205
2206         if (!mlx5_ib_modify_header_supported(mdev))
2207                 return -EOPNOTSUPP;
2208
2209         in = uverbs_attr_get_alloced_ptr(attrs,
2210                 MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM);
2211
2212         num_actions = uverbs_attr_ptr_get_array_size(
2213                 attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
2214                 MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto));
2215         if (num_actions < 0)
2216                 return num_actions;
2217
2218         ret = uverbs_get_const(&ft_type, attrs,
2219                                MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE);
2220         if (ret)
2221                 return ret;
2222         action = mlx5_ib_create_modify_header(mdev, ft_type, num_actions, in);
2223         if (IS_ERR(action))
2224                 return PTR_ERR(action);
2225
2226         uverbs_flow_action_fill_action(action, uobj, &mdev->ib_dev,
2227                                        IB_FLOW_ACTION_UNSPECIFIED);
2228
2229         return 0;
2230 }
2231
2232 static bool mlx5_ib_flow_action_packet_reformat_valid(struct mlx5_ib_dev *ibdev,
2233                                                       u8 packet_reformat_type,
2234                                                       u8 ft_type)
2235 {
2236         switch (packet_reformat_type) {
2237         case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
2238                 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
2239                         return MLX5_CAP_FLOWTABLE(ibdev->mdev,
2240                                                   encap_general_header);
2241                 break;
2242         case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
2243                 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
2244                         return MLX5_CAP_FLOWTABLE_NIC_TX(ibdev->mdev,
2245                                 reformat_l2_to_l3_tunnel);
2246                 break;
2247         case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
2248                 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
2249                         return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev,
2250                                 reformat_l3_tunnel_to_l2);
2251                 break;
2252         case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2:
2253                 if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
2254                         return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev, decap);
2255                 break;
2256         default:
2257                 break;
2258         }
2259
2260         return false;
2261 }
2262
2263 static int mlx5_ib_dv_to_prm_packet_reforamt_type(u8 dv_prt, u8 *prm_prt)
2264 {
2265         switch (dv_prt) {
2266         case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
2267                 *prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;
2268                 break;
2269         case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
2270                 *prm_prt = MLX5_REFORMAT_TYPE_L3_TUNNEL_TO_L2;
2271                 break;
2272         case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
2273                 *prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
2274                 break;
2275         default:
2276                 return -EINVAL;
2277         }
2278
2279         return 0;
2280 }
2281
2282 static int mlx5_ib_flow_action_create_packet_reformat_ctx(
2283         struct mlx5_ib_dev *dev,
2284         struct mlx5_ib_flow_action *maction,
2285         u8 ft_type, u8 dv_prt,
2286         void *in, size_t len)
2287 {
2288         enum mlx5_flow_namespace_type namespace;
2289         u8 prm_prt;
2290         int ret;
2291
2292         ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
2293         if (ret)
2294                 return ret;
2295
2296         ret = mlx5_ib_dv_to_prm_packet_reforamt_type(dv_prt, &prm_prt);
2297         if (ret)
2298                 return ret;
2299
2300         maction->flow_action_raw.pkt_reformat =
2301                 mlx5_packet_reformat_alloc(dev->mdev, prm_prt, len,
2302                                            in, namespace);
2303         if (IS_ERR(maction->flow_action_raw.pkt_reformat)) {
2304                 ret = PTR_ERR(maction->flow_action_raw.pkt_reformat);
2305                 return ret;
2306         }
2307
2308         maction->flow_action_raw.sub_type =
2309                 MLX5_IB_FLOW_ACTION_PACKET_REFORMAT;
2310         maction->flow_action_raw.dev = dev;
2311
2312         return 0;
2313 }
2314
2315 static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)(
2316         struct uverbs_attr_bundle *attrs)
2317 {
2318         struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
2319                 MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE);
2320         struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
2321         enum mlx5_ib_uapi_flow_action_packet_reformat_type dv_prt;
2322         enum mlx5_ib_uapi_flow_table_type ft_type;
2323         struct mlx5_ib_flow_action *maction;
2324         int ret;
2325
2326         ret = uverbs_get_const(&ft_type, attrs,
2327                                MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE);
2328         if (ret)
2329                 return ret;
2330
2331         ret = uverbs_get_const(&dv_prt, attrs,
2332                                MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE);
2333         if (ret)
2334                 return ret;
2335
2336         if (!mlx5_ib_flow_action_packet_reformat_valid(mdev, dv_prt, ft_type))
2337                 return -EOPNOTSUPP;
2338
2339         maction = kzalloc(sizeof(*maction), GFP_KERNEL);
2340         if (!maction)
2341                 return -ENOMEM;
2342
2343         if (dv_prt ==
2344             MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2) {
2345                 maction->flow_action_raw.sub_type =
2346                         MLX5_IB_FLOW_ACTION_DECAP;
2347                 maction->flow_action_raw.dev = mdev;
2348         } else {
2349                 void *in;
2350                 int len;
2351
2352                 in = uverbs_attr_get_alloced_ptr(attrs,
2353                         MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
2354                 if (IS_ERR(in)) {
2355                         ret = PTR_ERR(in);
2356                         goto free_maction;
2357                 }
2358
2359                 len = uverbs_attr_get_len(attrs,
2360                         MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
2361
2362                 ret = mlx5_ib_flow_action_create_packet_reformat_ctx(mdev,
2363                         maction, ft_type, dv_prt, in, len);
2364                 if (ret)
2365                         goto free_maction;
2366         }
2367
2368         uverbs_flow_action_fill_action(&maction->ib_action, uobj, &mdev->ib_dev,
2369                                        IB_FLOW_ACTION_UNSPECIFIED);
2370         return 0;
2371
2372 free_maction:
2373         kfree(maction);
2374         return ret;
2375 }
2376
2377 DECLARE_UVERBS_NAMED_METHOD(
2378         MLX5_IB_METHOD_CREATE_FLOW,
2379         UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
2380                         UVERBS_OBJECT_FLOW,
2381                         UVERBS_ACCESS_NEW,
2382                         UA_MANDATORY),
2383         UVERBS_ATTR_PTR_IN(
2384                 MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE,
2385                 UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
2386                 UA_MANDATORY,
2387                 UA_ALLOC_AND_COPY),
2388         UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_MATCHER,
2389                         MLX5_IB_OBJECT_FLOW_MATCHER,
2390                         UVERBS_ACCESS_READ,
2391                         UA_MANDATORY),
2392         UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_QP,
2393                         UVERBS_OBJECT_QP,
2394                         UVERBS_ACCESS_READ),
2395         UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX,
2396                         MLX5_IB_OBJECT_DEVX_OBJ,
2397                         UVERBS_ACCESS_READ),
2398         UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS,
2399                              UVERBS_OBJECT_FLOW_ACTION,
2400                              UVERBS_ACCESS_READ, 1,
2401                              MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS,
2402                              UA_OPTIONAL),
2403         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_TAG,
2404                            UVERBS_ATTR_TYPE(u32),
2405                            UA_OPTIONAL),
2406         UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX,
2407                              MLX5_IB_OBJECT_DEVX_OBJ,
2408                              UVERBS_ACCESS_READ, 1, 1,
2409                              UA_OPTIONAL),
2410         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
2411                            UVERBS_ATTR_MIN_SIZE(sizeof(u32)),
2412                            UA_OPTIONAL,
2413                            UA_ALLOC_AND_COPY),
2414         UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
2415                              enum mlx5_ib_create_flow_flags,
2416                              UA_OPTIONAL));
2417
2418 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2419         MLX5_IB_METHOD_DESTROY_FLOW,
2420         UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
2421                         UVERBS_OBJECT_FLOW,
2422                         UVERBS_ACCESS_DESTROY,
2423                         UA_MANDATORY));
2424
2425 ADD_UVERBS_METHODS(mlx5_ib_fs,
2426                    UVERBS_OBJECT_FLOW,
2427                    &UVERBS_METHOD(MLX5_IB_METHOD_CREATE_FLOW),
2428                    &UVERBS_METHOD(MLX5_IB_METHOD_DESTROY_FLOW));
2429
2430 DECLARE_UVERBS_NAMED_METHOD(
2431         MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER,
2432         UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE,
2433                         UVERBS_OBJECT_FLOW_ACTION,
2434                         UVERBS_ACCESS_NEW,
2435                         UA_MANDATORY),
2436         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
2437                            UVERBS_ATTR_MIN_SIZE(MLX5_UN_SZ_BYTES(
2438                                    set_add_copy_action_in_auto)),
2439                            UA_MANDATORY,
2440                            UA_ALLOC_AND_COPY),
2441         UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE,
2442                              enum mlx5_ib_uapi_flow_table_type,
2443                              UA_MANDATORY));
2444
2445 DECLARE_UVERBS_NAMED_METHOD(
2446         MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT,
2447         UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE,
2448                         UVERBS_OBJECT_FLOW_ACTION,
2449                         UVERBS_ACCESS_NEW,
2450                         UA_MANDATORY),
2451         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF,
2452                            UVERBS_ATTR_MIN_SIZE(1),
2453                            UA_ALLOC_AND_COPY,
2454                            UA_OPTIONAL),
2455         UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE,
2456                              enum mlx5_ib_uapi_flow_action_packet_reformat_type,
2457                              UA_MANDATORY),
2458         UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE,
2459                              enum mlx5_ib_uapi_flow_table_type,
2460                              UA_MANDATORY));
2461
2462 ADD_UVERBS_METHODS(
2463         mlx5_ib_flow_actions,
2464         UVERBS_OBJECT_FLOW_ACTION,
2465         &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER),
2466         &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT));
2467
2468 DECLARE_UVERBS_NAMED_METHOD(
2469         MLX5_IB_METHOD_FLOW_MATCHER_CREATE,
2470         UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE,
2471                         MLX5_IB_OBJECT_FLOW_MATCHER,
2472                         UVERBS_ACCESS_NEW,
2473                         UA_MANDATORY),
2474         UVERBS_ATTR_PTR_IN(
2475                 MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK,
2476                 UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
2477                 UA_MANDATORY),
2478         UVERBS_ATTR_ENUM_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE,
2479                             mlx5_ib_flow_type,
2480                             UA_MANDATORY),
2481         UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA,
2482                            UVERBS_ATTR_TYPE(u8),
2483                            UA_MANDATORY),
2484         UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
2485                              enum ib_flow_flags,
2486                              UA_OPTIONAL),
2487         UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE,
2488                              enum mlx5_ib_uapi_flow_table_type,
2489                              UA_OPTIONAL));
2490
2491 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2492         MLX5_IB_METHOD_FLOW_MATCHER_DESTROY,
2493         UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_DESTROY_HANDLE,
2494                         MLX5_IB_OBJECT_FLOW_MATCHER,
2495                         UVERBS_ACCESS_DESTROY,
2496                         UA_MANDATORY));
2497
2498 DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_FLOW_MATCHER,
2499                             UVERBS_TYPE_ALLOC_IDR(flow_matcher_cleanup),
2500                             &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_CREATE),
2501                             &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_DESTROY));
2502
2503 const struct uapi_definition mlx5_ib_flow_defs[] = {
2504         UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
2505                 MLX5_IB_OBJECT_FLOW_MATCHER),
2506         UAPI_DEF_CHAIN_OBJ_TREE(
2507                 UVERBS_OBJECT_FLOW,
2508                 &mlx5_ib_fs),
2509         UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION,
2510                                 &mlx5_ib_flow_actions),
2511         {},
2512 };
2513
2514 static const struct ib_device_ops flow_ops = {
2515         .create_flow = mlx5_ib_create_flow,
2516         .destroy_flow = mlx5_ib_destroy_flow,
2517         .destroy_flow_action = mlx5_ib_destroy_flow_action,
2518 };
2519
2520 static const struct ib_device_ops flow_ipsec_ops = {
2521         .create_flow_action_esp = mlx5_ib_create_flow_action_esp,
2522         .modify_flow_action_esp = mlx5_ib_modify_flow_action_esp,
2523 };
2524
2525 int mlx5_ib_fs_init(struct mlx5_ib_dev *dev)
2526 {
2527         dev->flow_db = kzalloc(sizeof(*dev->flow_db), GFP_KERNEL);
2528
2529         if (!dev->flow_db)
2530                 return -ENOMEM;
2531
2532         mutex_init(&dev->flow_db->lock);
2533
2534         ib_set_device_ops(&dev->ib_dev, &flow_ops);
2535         if (mlx5_accel_ipsec_device_caps(dev->mdev) &
2536             MLX5_ACCEL_IPSEC_CAP_DEVICE)
2537                 ib_set_device_ops(&dev->ib_dev, &flow_ipsec_ops);
2538
2539         return 0;
2540 }