drivers/net/ethernet/mellanox/mlx5/core/en_tc.c

   1 /*
   2  * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <net/flow_dissector.h>
  34 #include <net/flow_offload.h>
  35 #include <net/sch_generic.h>
  36 #include <net/pkt_cls.h>
  37 #include <linux/mlx5/fs.h>
  38 #include <linux/mlx5/device.h>
  39 #include <linux/rhashtable.h>
  40 #include <linux/refcount.h>
  41 #include <linux/completion.h>
  42 #include <net/arp.h>
  43 #include <net/ipv6_stubs.h>
  44 #include <net/bareudp.h>
  45 #include <net/bonding.h>
  46 #include "en.h"
  47 #include "en/tc/post_act.h"
  48 #include "en_rep.h"
  49 #include "en/rep/tc.h"
  50 #include "en/rep/neigh.h"
  51 #include "en_tc.h"
  52 #include "eswitch.h"
  53 #include "fs_core.h"
  54 #include "en/port.h"
  55 #include "en/tc_tun.h"
  56 #include "en/mapping.h"
  57 #include "en/tc_ct.h"
  58 #include "en/mod_hdr.h"
  59 #include "en/tc_tun_encap.h"
  60 #include "en/tc/sample.h"
  61 #include "en/tc/act/act.h"
  62 #include "en/tc/post_meter.h"
  63 #include "lib/devcom.h"
  64 #include "lib/geneve.h"
  65 #include "lib/fs_chains.h"
  66 #include "diag/en_tc_tracepoint.h"
  67 #include <asm/div64.h>
  68 #include "lag/lag.h"
  69 #include "lag/mp.h"
  70
  71 #define MLX5E_TC_TABLE_NUM_GROUPS 4
  72 #define MLX5E_TC_TABLE_MAX_GROUP_SIZE BIT(18)
  73
  74 struct mlx5e_tc_table {
  75         /* Protects the dynamic assignment of the t parameter
  76          * which is the nic tc root table.
  77          */
  78         struct mutex                    t_lock;
  79         struct mlx5e_priv               *priv;
  80         struct mlx5_flow_table          *t;
  81         struct mlx5_flow_table          *miss_t;
  82         struct mlx5_fs_chains           *chains;
  83         struct mlx5e_post_act           *post_act;
  84
  85         struct rhashtable               ht;
  86
  87         struct mod_hdr_tbl mod_hdr;
  88         struct mutex hairpin_tbl_lock; /* protects hairpin_tbl */
  89         DECLARE_HASHTABLE(hairpin_tbl, 8);
  90
  91         struct notifier_block     netdevice_nb;
  92         struct netdev_net_notifier      netdevice_nn;
  93
  94         struct mlx5_tc_ct_priv         *ct;
  95         struct mapping_ctx             *mapping;
  96 };
  97
  98 struct mlx5e_tc_attr_to_reg_mapping mlx5e_tc_attr_to_reg_mappings[] = {
  99         [CHAIN_TO_REG] = {
 100                 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_0,
 101                 .moffset = 0,
 102                 .mlen = 16,
 103         },
 104         [VPORT_TO_REG] = {
 105                 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_0,
 106                 .moffset = 16,
 107                 .mlen = 16,
 108         },
 109         [TUNNEL_TO_REG] = {
 110                 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_1,
 111                 .moffset = 8,
 112                 .mlen = ESW_TUN_OPTS_BITS + ESW_TUN_ID_BITS,
 113                 .soffset = MLX5_BYTE_OFF(fte_match_param,
 114                                          misc_parameters_2.metadata_reg_c_1),
 115         },
 116         [ZONE_TO_REG] = zone_to_reg_ct,
 117         [ZONE_RESTORE_TO_REG] = zone_restore_to_reg_ct,
 118         [CTSTATE_TO_REG] = ctstate_to_reg_ct,
 119         [MARK_TO_REG] = mark_to_reg_ct,
 120         [LABELS_TO_REG] = labels_to_reg_ct,
 121         [FTEID_TO_REG] = fteid_to_reg_ct,
 122         /* For NIC rules we store the restore metadata directly
 123          * into reg_b that is passed to SW since we don't
 124          * jump between steering domains.
 125          */
 126         [NIC_CHAIN_TO_REG] = {
 127                 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_B,
 128                 .moffset = 0,
 129                 .mlen = 16,
 130         },
 131         [NIC_ZONE_RESTORE_TO_REG] = nic_zone_restore_to_reg_ct,
 132         [PACKET_COLOR_TO_REG] = packet_color_to_reg,
 133 };
 134
 135 struct mlx5e_tc_table *mlx5e_tc_table_alloc(void)
 136 {
 137         struct mlx5e_tc_table *tc;
 138
 139         tc = kvzalloc(sizeof(*tc), GFP_KERNEL);
 140         return tc ? tc : ERR_PTR(-ENOMEM);
 141 }
 142
 143 void mlx5e_tc_table_free(struct mlx5e_tc_table *tc)
 144 {
 145         kvfree(tc);
 146 }
 147
 148 struct mlx5_fs_chains *mlx5e_nic_chains(struct mlx5e_tc_table *tc)
 149 {
 150         return tc->chains;
 151 }
 152
 153 /* To avoid false lock dependency warning set the tc_ht lock
 154  * class different than the lock class of the ht being used when deleting
 155  * last flow from a group and then deleting a group, we get into del_sw_flow_group()
 156  * which call rhashtable_destroy on fg->ftes_hash which will take ht->mutex but
 157  * it's different than the ht->mutex here.
 158  */
 159 static struct lock_class_key tc_ht_lock_key;
 160
 161 static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow);
 162 static void free_flow_post_acts(struct mlx5e_tc_flow *flow);
 163
 164 void
 165 mlx5e_tc_match_to_reg_match(struct mlx5_flow_spec *spec,
 166                             enum mlx5e_tc_attr_to_reg type,
 167                             u32 val,
 168                             u32 mask)
 169 {
 170         void *headers_c = spec->match_criteria, *headers_v = spec->match_value, *fmask, *fval;
 171         int soffset = mlx5e_tc_attr_to_reg_mappings[type].soffset;
 172         int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset;
 173         int match_len = mlx5e_tc_attr_to_reg_mappings[type].mlen;
 174         u32 max_mask = GENMASK(match_len - 1, 0);
 175         __be32 curr_mask_be, curr_val_be;
 176         u32 curr_mask, curr_val;
 177
 178         fmask = headers_c + soffset;
 179         fval = headers_v + soffset;
 180
 181         memcpy(&curr_mask_be, fmask, 4);
 182         memcpy(&curr_val_be, fval, 4);
 183
 184         curr_mask = be32_to_cpu(curr_mask_be);
 185         curr_val = be32_to_cpu(curr_val_be);
 186
 187         //move to correct offset
 188         WARN_ON(mask > max_mask);
 189         mask <<= moffset;
 190         val <<= moffset;
 191         max_mask <<= moffset;
 192
 193         //zero val and mask
 194         curr_mask &= ~max_mask;
 195         curr_val &= ~max_mask;
 196
 197         //add current to mask
 198         curr_mask |= mask;
 199         curr_val |= val;
 200
 201         //back to be32 and write
 202         curr_mask_be = cpu_to_be32(curr_mask);
 203         curr_val_be = cpu_to_be32(curr_val);
 204
 205         memcpy(fmask, &curr_mask_be, 4);
 206         memcpy(fval, &curr_val_be, 4);
 207
 208         spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_2;
 209 }
 210
 211 void
 212 mlx5e_tc_match_to_reg_get_match(struct mlx5_flow_spec *spec,
 213                                 enum mlx5e_tc_attr_to_reg type,
 214                                 u32 *val,
 215                                 u32 *mask)
 216 {
 217         void *headers_c = spec->match_criteria, *headers_v = spec->match_value, *fmask, *fval;
 218         int soffset = mlx5e_tc_attr_to_reg_mappings[type].soffset;
 219         int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset;
 220         int match_len = mlx5e_tc_attr_to_reg_mappings[type].mlen;
 221         u32 max_mask = GENMASK(match_len - 1, 0);
 222         __be32 curr_mask_be, curr_val_be;
 223         u32 curr_mask, curr_val;
 224
 225         fmask = headers_c + soffset;
 226         fval = headers_v + soffset;
 227
 228         memcpy(&curr_mask_be, fmask, 4);
 229         memcpy(&curr_val_be, fval, 4);
 230
 231         curr_mask = be32_to_cpu(curr_mask_be);
 232         curr_val = be32_to_cpu(curr_val_be);
 233
 234         *mask = (curr_mask >> moffset) & max_mask;
 235         *val = (curr_val >> moffset) & max_mask;
 236 }
 237
 238 int
 239 mlx5e_tc_match_to_reg_set_and_get_id(struct mlx5_core_dev *mdev,
 240                                      struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
 241                                      enum mlx5_flow_namespace_type ns,
 242                                      enum mlx5e_tc_attr_to_reg type,
 243                                      u32 data)
 244 {
 245         int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset;
 246         int mfield = mlx5e_tc_attr_to_reg_mappings[type].mfield;
 247         int mlen = mlx5e_tc_attr_to_reg_mappings[type].mlen;
 248         char *modact;
 249         int err;
 250
 251         modact = mlx5e_mod_hdr_alloc(mdev, ns, mod_hdr_acts);
 252         if (IS_ERR(modact))
 253                 return PTR_ERR(modact);
 254
 255         /* Firmware has 5bit length field and 0 means 32bits */
 256         if (mlen == 32)
 257                 mlen = 0;
 258
 259         MLX5_SET(set_action_in, modact, action_type, MLX5_ACTION_TYPE_SET);
 260         MLX5_SET(set_action_in, modact, field, mfield);
 261         MLX5_SET(set_action_in, modact, offset, moffset);
 262         MLX5_SET(set_action_in, modact, length, mlen);
 263         MLX5_SET(set_action_in, modact, data, data);
 264         err = mod_hdr_acts->num_actions;
 265         mod_hdr_acts->num_actions++;
 266
 267         return err;
 268 }
 269
 270 struct mlx5e_tc_int_port_priv *
 271 mlx5e_get_int_port_priv(struct mlx5e_priv *priv)
 272 {
 273         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 274         struct mlx5_rep_uplink_priv *uplink_priv;
 275         struct mlx5e_rep_priv *uplink_rpriv;
 276
 277         if (is_mdev_switchdev_mode(priv->mdev)) {
 278                 uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
 279                 uplink_priv = &uplink_rpriv->uplink_priv;
 280
 281                 return uplink_priv->int_port_priv;
 282         }
 283
 284         return NULL;
 285 }
 286
 287 struct mlx5e_flow_meters *
 288 mlx5e_get_flow_meters(struct mlx5_core_dev *dev)
 289 {
 290         struct mlx5_eswitch *esw = dev->priv.eswitch;
 291         struct mlx5_rep_uplink_priv *uplink_priv;
 292         struct mlx5e_rep_priv *uplink_rpriv;
 293         struct mlx5e_priv *priv;
 294
 295         if (is_mdev_switchdev_mode(dev)) {
 296                 uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
 297                 uplink_priv = &uplink_rpriv->uplink_priv;
 298                 priv = netdev_priv(uplink_rpriv->netdev);
 299                 if (!uplink_priv->flow_meters)
 300                         uplink_priv->flow_meters =
 301                                 mlx5e_flow_meters_init(priv,
 302                                                        MLX5_FLOW_NAMESPACE_FDB,
 303                                                        uplink_priv->post_act);
 304                 if (!IS_ERR(uplink_priv->flow_meters))
 305                         return uplink_priv->flow_meters;
 306         }
 307
 308         return NULL;
 309 }
 310
 311 static struct mlx5_tc_ct_priv *
 312 get_ct_priv(struct mlx5e_priv *priv)
 313 {
 314         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
 315         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 316         struct mlx5_rep_uplink_priv *uplink_priv;
 317         struct mlx5e_rep_priv *uplink_rpriv;
 318
 319         if (is_mdev_switchdev_mode(priv->mdev)) {
 320                 uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
 321                 uplink_priv = &uplink_rpriv->uplink_priv;
 322
 323                 return uplink_priv->ct_priv;
 324         }
 325
 326         return tc->ct;
 327 }
 328
 329 static struct mlx5e_tc_psample *
 330 get_sample_priv(struct mlx5e_priv *priv)
 331 {
 332         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 333         struct mlx5_rep_uplink_priv *uplink_priv;
 334         struct mlx5e_rep_priv *uplink_rpriv;
 335
 336         if (is_mdev_switchdev_mode(priv->mdev)) {
 337                 uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
 338                 uplink_priv = &uplink_rpriv->uplink_priv;
 339
 340                 return uplink_priv->tc_psample;
 341         }
 342
 343         return NULL;
 344 }
 345
 346 static struct mlx5e_post_act *
 347 get_post_action(struct mlx5e_priv *priv)
 348 {
 349         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
 350         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 351         struct mlx5_rep_uplink_priv *uplink_priv;
 352         struct mlx5e_rep_priv *uplink_rpriv;
 353
 354         if (is_mdev_switchdev_mode(priv->mdev)) {
 355                 uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
 356                 uplink_priv = &uplink_rpriv->uplink_priv;
 357
 358                 return uplink_priv->post_act;
 359         }
 360
 361         return tc->post_act;
 362 }
 363
 364 struct mlx5_flow_handle *
 365 mlx5_tc_rule_insert(struct mlx5e_priv *priv,
 366                     struct mlx5_flow_spec *spec,
 367                     struct mlx5_flow_attr *attr)
 368 {
 369         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 370
 371         if (is_mdev_switchdev_mode(priv->mdev))
 372                 return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
 373
 374         return  mlx5e_add_offloaded_nic_rule(priv, spec, attr);
 375 }
 376
 377 void
 378 mlx5_tc_rule_delete(struct mlx5e_priv *priv,
 379                     struct mlx5_flow_handle *rule,
 380                     struct mlx5_flow_attr *attr)
 381 {
 382         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 383
 384         if (is_mdev_switchdev_mode(priv->mdev)) {
 385                 mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
 386                 return;
 387         }
 388
 389         mlx5e_del_offloaded_nic_rule(priv, rule, attr);
 390 }
 391
 392 static bool
 393 is_flow_meter_action(struct mlx5_flow_attr *attr)
 394 {
 395         return ((attr->action & MLX5_FLOW_CONTEXT_ACTION_EXECUTE_ASO) &&
 396                 (attr->exe_aso_type == MLX5_EXE_ASO_FLOW_METER));
 397 }
 398
 399 static int
 400 mlx5e_tc_add_flow_meter(struct mlx5e_priv *priv,
 401                         struct mlx5_flow_attr *attr)
 402 {
 403         struct mlx5e_post_act *post_act = get_post_action(priv);
 404         struct mlx5e_post_meter_priv *post_meter;
 405         enum mlx5_flow_namespace_type ns_type;
 406         struct mlx5e_flow_meter_handle *meter;
 407
 408         meter = mlx5e_tc_meter_replace(priv->mdev, &attr->meter_attr.params);
 409         if (IS_ERR(meter)) {
 410                 mlx5_core_err(priv->mdev, "Failed to get flow meter\n");
 411                 return PTR_ERR(meter);
 412         }
 413
 414         ns_type = mlx5e_tc_meter_get_namespace(meter->flow_meters);
 415         post_meter = mlx5e_post_meter_init(priv, ns_type, post_act, meter->green_counter,
 416                                            meter->red_counter);
 417         if (IS_ERR(post_meter)) {
 418                 mlx5_core_err(priv->mdev, "Failed to init post meter\n");
 419                 goto err_meter_init;
 420         }
 421
 422         attr->meter_attr.meter = meter;
 423         attr->meter_attr.post_meter = post_meter;
 424         attr->dest_ft = mlx5e_post_meter_get_ft(post_meter);
 425         attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
 426
 427         return 0;
 428
 429 err_meter_init:
 430         mlx5e_tc_meter_put(meter);
 431         return PTR_ERR(post_meter);
 432 }
 433
 434 static void
 435 mlx5e_tc_del_flow_meter(struct mlx5_flow_attr *attr)
 436 {
 437         mlx5e_post_meter_cleanup(attr->meter_attr.post_meter);
 438         mlx5e_tc_meter_put(attr->meter_attr.meter);
 439 }
 440
 441 struct mlx5_flow_handle *
 442 mlx5e_tc_rule_offload(struct mlx5e_priv *priv,
 443                       struct mlx5_flow_spec *spec,
 444                       struct mlx5_flow_attr *attr)
 445 {
 446         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 447         int err;
 448
 449         if (attr->flags & MLX5_ATTR_FLAG_CT) {
 450                 struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts =
 451                         &attr->parse_attr->mod_hdr_acts;
 452
 453                 return mlx5_tc_ct_flow_offload(get_ct_priv(priv),
 454                                                spec, attr,
 455                                                mod_hdr_acts);
 456         }
 457
 458         if (!is_mdev_switchdev_mode(priv->mdev))
 459                 return mlx5e_add_offloaded_nic_rule(priv, spec, attr);
 460
 461         if (attr->flags & MLX5_ATTR_FLAG_SAMPLE)
 462                 return mlx5e_tc_sample_offload(get_sample_priv(priv), spec, attr);
 463
 464         if (is_flow_meter_action(attr)) {
 465                 err = mlx5e_tc_add_flow_meter(priv, attr);
 466                 if (err)
 467                         return ERR_PTR(err);
 468         }
 469
 470         return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
 471 }
 472
 473 void
 474 mlx5e_tc_rule_unoffload(struct mlx5e_priv *priv,
 475                         struct mlx5_flow_handle *rule,
 476                         struct mlx5_flow_attr *attr)
 477 {
 478         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 479
 480         if (attr->flags & MLX5_ATTR_FLAG_CT) {
 481                 mlx5_tc_ct_delete_flow(get_ct_priv(priv), attr);
 482                 return;
 483         }
 484
 485         if (!is_mdev_switchdev_mode(priv->mdev)) {
 486                 mlx5e_del_offloaded_nic_rule(priv, rule, attr);
 487                 return;
 488         }
 489
 490         if (attr->flags & MLX5_ATTR_FLAG_SAMPLE) {
 491                 mlx5e_tc_sample_unoffload(get_sample_priv(priv), rule, attr);
 492                 return;
 493         }
 494
 495         mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
 496
 497         if (attr->meter_attr.meter)
 498                 mlx5e_tc_del_flow_meter(attr);
 499 }
 500
 501 int
 502 mlx5e_tc_match_to_reg_set(struct mlx5_core_dev *mdev,
 503                           struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
 504                           enum mlx5_flow_namespace_type ns,
 505                           enum mlx5e_tc_attr_to_reg type,
 506                           u32 data)
 507 {
 508         int ret = mlx5e_tc_match_to_reg_set_and_get_id(mdev, mod_hdr_acts, ns, type, data);
 509
 510         return ret < 0 ? ret : 0;
 511 }
 512
 513 void mlx5e_tc_match_to_reg_mod_hdr_change(struct mlx5_core_dev *mdev,
 514                                           struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
 515                                           enum mlx5e_tc_attr_to_reg type,
 516                                           int act_id, u32 data)
 517 {
 518         int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset;
 519         int mfield = mlx5e_tc_attr_to_reg_mappings[type].mfield;
 520         int mlen = mlx5e_tc_attr_to_reg_mappings[type].mlen;
 521         char *modact;
 522
 523         modact = mlx5e_mod_hdr_get_item(mod_hdr_acts, act_id);
 524
 525         /* Firmware has 5bit length field and 0 means 32bits */
 526         if (mlen == 32)
 527                 mlen = 0;
 528
 529         MLX5_SET(set_action_in, modact, action_type, MLX5_ACTION_TYPE_SET);
 530         MLX5_SET(set_action_in, modact, field, mfield);
 531         MLX5_SET(set_action_in, modact, offset, moffset);
 532         MLX5_SET(set_action_in, modact, length, mlen);
 533         MLX5_SET(set_action_in, modact, data, data);
 534 }
 535
 536 struct mlx5e_hairpin {
 537         struct mlx5_hairpin *pair;
 538
 539         struct mlx5_core_dev *func_mdev;
 540         struct mlx5e_priv *func_priv;
 541         u32 tdn;
 542         struct mlx5e_tir direct_tir;
 543
 544         int num_channels;
 545         struct mlx5e_rqt indir_rqt;
 546         struct mlx5e_tir indir_tir[MLX5E_NUM_INDIR_TIRS];
 547         struct mlx5_ttc_table *ttc;
 548 };
 549
 550 struct mlx5e_hairpin_entry {
 551         /* a node of a hash table which keeps all the  hairpin entries */
 552         struct hlist_node hairpin_hlist;
 553
 554         /* protects flows list */
 555         spinlock_t flows_lock;
 556         /* flows sharing the same hairpin */
 557         struct list_head flows;
 558         /* hpe's that were not fully initialized when dead peer update event
 559          * function traversed them.
 560          */
 561         struct list_head dead_peer_wait_list;
 562
 563         u16 peer_vhca_id;
 564         u8 prio;
 565         struct mlx5e_hairpin *hp;
 566         refcount_t refcnt;
 567         struct completion res_ready;
 568 };
 569
 570 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
 571                               struct mlx5e_tc_flow *flow);
 572
 573 struct mlx5e_tc_flow *mlx5e_flow_get(struct mlx5e_tc_flow *flow)
 574 {
 575         if (!flow || !refcount_inc_not_zero(&flow->refcnt))
 576                 return ERR_PTR(-EINVAL);
 577         return flow;
 578 }
 579
 580 void mlx5e_flow_put(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow)
 581 {
 582         if (refcount_dec_and_test(&flow->refcnt)) {
 583                 mlx5e_tc_del_flow(priv, flow);
 584                 kfree_rcu(flow, rcu_head);
 585         }
 586 }
 587
 588 bool mlx5e_is_eswitch_flow(struct mlx5e_tc_flow *flow)
 589 {
 590         return flow_flag_test(flow, ESWITCH);
 591 }
 592
 593 bool mlx5e_is_ft_flow(struct mlx5e_tc_flow *flow)
 594 {
 595         return flow_flag_test(flow, FT);
 596 }
 597
 598 bool mlx5e_is_offloaded_flow(struct mlx5e_tc_flow *flow)
 599 {
 600         return flow_flag_test(flow, OFFLOADED);
 601 }
 602
 603 int mlx5e_get_flow_namespace(struct mlx5e_tc_flow *flow)
 604 {
 605         return mlx5e_is_eswitch_flow(flow) ?
 606                 MLX5_FLOW_NAMESPACE_FDB : MLX5_FLOW_NAMESPACE_KERNEL;
 607 }
 608
 609 static struct mod_hdr_tbl *
 610 get_mod_hdr_table(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow)
 611 {
 612         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
 613         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 614
 615         return mlx5e_get_flow_namespace(flow) == MLX5_FLOW_NAMESPACE_FDB ?
 616                 &esw->offloads.mod_hdr :
 617                 &tc->mod_hdr;
 618 }
 619
 620 static int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv,
 621                                 struct mlx5e_tc_flow *flow,
 622                                 struct mlx5e_tc_flow_parse_attr *parse_attr)
 623 {
 624         struct mlx5_modify_hdr *modify_hdr;
 625         struct mlx5e_mod_hdr_handle *mh;
 626
 627         mh = mlx5e_mod_hdr_attach(priv->mdev, get_mod_hdr_table(priv, flow),
 628                                   mlx5e_get_flow_namespace(flow),
 629                                   &parse_attr->mod_hdr_acts);
 630         if (IS_ERR(mh))
 631                 return PTR_ERR(mh);
 632
 633         modify_hdr = mlx5e_mod_hdr_get(mh);
 634         flow->attr->modify_hdr = modify_hdr;
 635         flow->mh = mh;
 636
 637         return 0;
 638 }
 639
 640 static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv,
 641                                  struct mlx5e_tc_flow *flow)
 642 {
 643         /* flow wasn't fully initialized */
 644         if (!flow->mh)
 645                 return;
 646
 647         mlx5e_mod_hdr_detach(priv->mdev, get_mod_hdr_table(priv, flow),
 648                              flow->mh);
 649         flow->mh = NULL;
 650 }
 651
 652 static
 653 struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex)
 654 {
 655         struct mlx5_core_dev *mdev;
 656         struct net_device *netdev;
 657         struct mlx5e_priv *priv;
 658
 659         netdev = dev_get_by_index(net, ifindex);
 660         if (!netdev)
 661                 return ERR_PTR(-ENODEV);
 662
 663         priv = netdev_priv(netdev);
 664         mdev = priv->mdev;
 665         dev_put(netdev);
 666
 667         /* Mirred tc action holds a refcount on the ifindex net_device (see
 668          * net/sched/act_mirred.c:tcf_mirred_get_dev). So, it's okay to continue using mdev
 669          * after dev_put(netdev), while we're in the context of adding a tc flow.
 670          *
 671          * The mdev pointer corresponds to the peer/out net_device of a hairpin. It is then
 672          * stored in a hairpin object, which exists until all flows, that refer to it, get
 673          * removed.
 674          *
 675          * On the other hand, after a hairpin object has been created, the peer net_device may
 676          * be removed/unbound while there are still some hairpin flows that are using it. This
 677          * case is handled by mlx5e_tc_hairpin_update_dead_peer, which is hooked to
 678          * NETDEV_UNREGISTER event of the peer net_device.
 679          */
 680         return mdev;
 681 }
 682
 683 static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp)
 684 {
 685         struct mlx5e_tir_builder *builder;
 686         int err;
 687
 688         builder = mlx5e_tir_builder_alloc(false);
 689         if (!builder)
 690                 return -ENOMEM;
 691
 692         err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn);
 693         if (err)
 694                 goto out;
 695
 696         mlx5e_tir_builder_build_inline(builder, hp->tdn, hp->pair->rqn[0]);
 697         err = mlx5e_tir_init(&hp->direct_tir, builder, hp->func_mdev, false);
 698         if (err)
 699                 goto create_tir_err;
 700
 701 out:
 702         mlx5e_tir_builder_free(builder);
 703         return err;
 704
 705 create_tir_err:
 706         mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
 707
 708         goto out;
 709 }
 710
 711 static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp)
 712 {
 713         mlx5e_tir_destroy(&hp->direct_tir);
 714         mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
 715 }
 716
 717 static int mlx5e_hairpin_create_indirect_rqt(struct mlx5e_hairpin *hp)
 718 {
 719         struct mlx5e_priv *priv = hp->func_priv;
 720         struct mlx5_core_dev *mdev = priv->mdev;
 721         struct mlx5e_rss_params_indir *indir;
 722         int err;
 723
 724         indir = kvmalloc(sizeof(*indir), GFP_KERNEL);
 725         if (!indir)
 726                 return -ENOMEM;
 727
 728         mlx5e_rss_params_indir_init_uniform(indir, hp->num_channels);
 729         err = mlx5e_rqt_init_indir(&hp->indir_rqt, mdev, hp->pair->rqn, hp->num_channels,
 730                                    mlx5e_rx_res_get_current_hash(priv->rx_res).hfunc,
 731                                    indir);
 732
 733         kvfree(indir);
 734         return err;
 735 }
 736
 737 static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp)
 738 {
 739         struct mlx5e_priv *priv = hp->func_priv;
 740         struct mlx5e_rss_params_hash rss_hash;
 741         enum mlx5_traffic_types tt, max_tt;
 742         struct mlx5e_tir_builder *builder;
 743         int err = 0;
 744
 745         builder = mlx5e_tir_builder_alloc(false);
 746         if (!builder)
 747                 return -ENOMEM;
 748
 749         rss_hash = mlx5e_rx_res_get_current_hash(priv->rx_res);
 750
 751         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
 752                 struct mlx5e_rss_params_traffic_type rss_tt;
 753
 754                 rss_tt = mlx5e_rss_get_default_tt_config(tt);
 755
 756                 mlx5e_tir_builder_build_rqt(builder, hp->tdn,
 757                                             mlx5e_rqt_get_rqtn(&hp->indir_rqt),
 758                                             false);
 759                 mlx5e_tir_builder_build_rss(builder, &rss_hash, &rss_tt, false);
 760
 761                 err = mlx5e_tir_init(&hp->indir_tir[tt], builder, hp->func_mdev, false);
 762                 if (err) {
 763                         mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err);
 764                         goto err_destroy_tirs;
 765                 }
 766
 767                 mlx5e_tir_builder_clear(builder);
 768         }
 769
 770 out:
 771         mlx5e_tir_builder_free(builder);
 772         return err;
 773
 774 err_destroy_tirs:
 775         max_tt = tt;
 776         for (tt = 0; tt < max_tt; tt++)
 777                 mlx5e_tir_destroy(&hp->indir_tir[tt]);
 778
 779         goto out;
 780 }
 781
 782 static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp)
 783 {
 784         int tt;
 785
 786         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
 787                 mlx5e_tir_destroy(&hp->indir_tir[tt]);
 788 }
 789
 790 static void mlx5e_hairpin_set_ttc_params(struct mlx5e_hairpin *hp,
 791                                          struct ttc_params *ttc_params)
 792 {
 793         struct mlx5_flow_table_attr *ft_attr = &ttc_params->ft_attr;
 794         int tt;
 795
 796         memset(ttc_params, 0, sizeof(*ttc_params));
 797
 798         ttc_params->ns = mlx5_get_flow_namespace(hp->func_mdev,
 799                                                  MLX5_FLOW_NAMESPACE_KERNEL);
 800         for (tt = 0; tt < MLX5_NUM_TT; tt++) {
 801                 ttc_params->dests[tt].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
 802                 ttc_params->dests[tt].tir_num =
 803                         tt == MLX5_TT_ANY ?
 804                                 mlx5e_tir_get_tirn(&hp->direct_tir) :
 805                                 mlx5e_tir_get_tirn(&hp->indir_tir[tt]);
 806         }
 807
 808         ft_attr->level = MLX5E_TC_TTC_FT_LEVEL;
 809         ft_attr->prio = MLX5E_TC_PRIO;
 810 }
 811
 812 static int mlx5e_hairpin_rss_init(struct mlx5e_hairpin *hp)
 813 {
 814         struct mlx5e_priv *priv = hp->func_priv;
 815         struct ttc_params ttc_params;
 816         struct mlx5_ttc_table *ttc;
 817         int err;
 818
 819         err = mlx5e_hairpin_create_indirect_rqt(hp);
 820         if (err)
 821                 return err;
 822
 823         err = mlx5e_hairpin_create_indirect_tirs(hp);
 824         if (err)
 825                 goto err_create_indirect_tirs;
 826
 827         mlx5e_hairpin_set_ttc_params(hp, &ttc_params);
 828         hp->ttc = mlx5_create_ttc_table(priv->mdev, &ttc_params);
 829         if (IS_ERR(hp->ttc)) {
 830                 err = PTR_ERR(hp->ttc);
 831                 goto err_create_ttc_table;
 832         }
 833
 834         ttc = mlx5e_fs_get_ttc(priv->fs, false);
 835         netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n",
 836                    hp->num_channels,
 837                    mlx5_get_ttc_flow_table(ttc)->id);
 838
 839         return 0;
 840
 841 err_create_ttc_table:
 842         mlx5e_hairpin_destroy_indirect_tirs(hp);
 843 err_create_indirect_tirs:
 844         mlx5e_rqt_destroy(&hp->indir_rqt);
 845
 846         return err;
 847 }
 848
 849 static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp)
 850 {
 851         mlx5_destroy_ttc_table(hp->ttc);
 852         mlx5e_hairpin_destroy_indirect_tirs(hp);
 853         mlx5e_rqt_destroy(&hp->indir_rqt);
 854 }
 855
 856 static struct mlx5e_hairpin *
 857 mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params,
 858                      int peer_ifindex)
 859 {
 860         struct mlx5_core_dev *func_mdev, *peer_mdev;
 861         struct mlx5e_hairpin *hp;
 862         struct mlx5_hairpin *pair;
 863         int err;
 864
 865         hp = kzalloc(sizeof(*hp), GFP_KERNEL);
 866         if (!hp)
 867                 return ERR_PTR(-ENOMEM);
 868
 869         func_mdev = priv->mdev;
 870         peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
 871         if (IS_ERR(peer_mdev)) {
 872                 err = PTR_ERR(peer_mdev);
 873                 goto create_pair_err;
 874         }
 875
 876         pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params);
 877         if (IS_ERR(pair)) {
 878                 err = PTR_ERR(pair);
 879                 goto create_pair_err;
 880         }
 881         hp->pair = pair;
 882         hp->func_mdev = func_mdev;
 883         hp->func_priv = priv;
 884         hp->num_channels = params->num_channels;
 885
 886         err = mlx5e_hairpin_create_transport(hp);
 887         if (err)
 888                 goto create_transport_err;
 889
 890         if (hp->num_channels > 1) {
 891                 err = mlx5e_hairpin_rss_init(hp);
 892                 if (err)
 893                         goto rss_init_err;
 894         }
 895
 896         return hp;
 897
 898 rss_init_err:
 899         mlx5e_hairpin_destroy_transport(hp);
 900 create_transport_err:
 901         mlx5_core_hairpin_destroy(hp->pair);
 902 create_pair_err:
 903         kfree(hp);
 904         return ERR_PTR(err);
 905 }
 906
 907 static void mlx5e_hairpin_destroy(struct mlx5e_hairpin *hp)
 908 {
 909         if (hp->num_channels > 1)
 910                 mlx5e_hairpin_rss_cleanup(hp);
 911         mlx5e_hairpin_destroy_transport(hp);
 912         mlx5_core_hairpin_destroy(hp->pair);
 913         kvfree(hp);
 914 }
 915
 916 static inline u32 hash_hairpin_info(u16 peer_vhca_id, u8 prio)
 917 {
 918         return (peer_vhca_id << 16 | prio);
 919 }
 920
 921 static struct mlx5e_hairpin_entry *mlx5e_hairpin_get(struct mlx5e_priv *priv,
 922                                                      u16 peer_vhca_id, u8 prio)
 923 {
 924         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
 925         struct mlx5e_hairpin_entry *hpe;
 926         u32 hash_key = hash_hairpin_info(peer_vhca_id, prio);
 927
 928         hash_for_each_possible(tc->hairpin_tbl, hpe,
 929                                hairpin_hlist, hash_key) {
 930                 if (hpe->peer_vhca_id == peer_vhca_id && hpe->prio == prio) {
 931                         refcount_inc(&hpe->refcnt);
 932                         return hpe;
 933                 }
 934         }
 935
 936         return NULL;
 937 }
 938
 939 static void mlx5e_hairpin_put(struct mlx5e_priv *priv,
 940                               struct mlx5e_hairpin_entry *hpe)
 941 {
 942         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
 943         /* no more hairpin flows for us, release the hairpin pair */
 944         if (!refcount_dec_and_mutex_lock(&hpe->refcnt, &tc->hairpin_tbl_lock))
 945                 return;
 946         hash_del(&hpe->hairpin_hlist);
 947         mutex_unlock(&tc->hairpin_tbl_lock);
 948
 949         if (!IS_ERR_OR_NULL(hpe->hp)) {
 950                 netdev_dbg(priv->netdev, "del hairpin: peer %s\n",
 951                            dev_name(hpe->hp->pair->peer_mdev->device));
 952
 953                 mlx5e_hairpin_destroy(hpe->hp);
 954         }
 955
 956         WARN_ON(!list_empty(&hpe->flows));
 957         kfree(hpe);
 958 }
 959
 960 #define UNKNOWN_MATCH_PRIO 8
 961
 962 static int mlx5e_hairpin_get_prio(struct mlx5e_priv *priv,
 963                                   struct mlx5_flow_spec *spec, u8 *match_prio,
 964                                   struct netlink_ext_ack *extack)
 965 {
 966         void *headers_c, *headers_v;
 967         u8 prio_val, prio_mask = 0;
 968         bool vlan_present;
 969
 970 #ifdef CONFIG_MLX5_CORE_EN_DCB
 971         if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_PCP) {
 972                 NL_SET_ERR_MSG_MOD(extack,
 973                                    "only PCP trust state supported for hairpin");
 974                 return -EOPNOTSUPP;
 975         }
 976 #endif
 977         headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers);
 978         headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
 979
 980         vlan_present = MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag);
 981         if (vlan_present) {
 982                 prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
 983                 prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
 984         }
 985
 986         if (!vlan_present || !prio_mask) {
 987                 prio_val = UNKNOWN_MATCH_PRIO;
 988         } else if (prio_mask != 0x7) {
 989                 NL_SET_ERR_MSG_MOD(extack,
 990                                    "masked priority match not supported for hairpin");
 991                 return -EOPNOTSUPP;
 992         }
 993
 994         *match_prio = prio_val;
 995         return 0;
 996 }
 997
 998 static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv,
 999                                   struct mlx5e_tc_flow *flow,
1000                                   struct mlx5e_tc_flow_parse_attr *parse_attr,
1001                                   struct netlink_ext_ack *extack)
1002 {
1003         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
1004         int peer_ifindex = parse_attr->mirred_ifindex[0];
1005         struct mlx5_hairpin_params params;
1006         struct mlx5_core_dev *peer_mdev;
1007         struct mlx5e_hairpin_entry *hpe;
1008         struct mlx5e_hairpin *hp;
1009         u64 link_speed64;
1010         u32 link_speed;
1011         u8 match_prio;
1012         u16 peer_id;
1013         int err;
1014
1015         peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
1016         if (IS_ERR(peer_mdev)) {
1017                 NL_SET_ERR_MSG_MOD(extack, "invalid ifindex of mirred device");
1018                 return PTR_ERR(peer_mdev);
1019         }
1020
1021         if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) {
1022                 NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported");
1023                 return -EOPNOTSUPP;
1024         }
1025
1026         peer_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
1027         err = mlx5e_hairpin_get_prio(priv, &parse_attr->spec, &match_prio,
1028                                      extack);
1029         if (err)
1030                 return err;
1031
1032         mutex_lock(&tc->hairpin_tbl_lock);
1033         hpe = mlx5e_hairpin_get(priv, peer_id, match_prio);
1034         if (hpe) {
1035                 mutex_unlock(&tc->hairpin_tbl_lock);
1036                 wait_for_completion(&hpe->res_ready);
1037
1038                 if (IS_ERR(hpe->hp)) {
1039                         err = -EREMOTEIO;
1040                         goto out_err;
1041                 }
1042                 goto attach_flow;
1043         }
1044
1045         hpe = kzalloc(sizeof(*hpe), GFP_KERNEL);
1046         if (!hpe) {
1047                 mutex_unlock(&tc->hairpin_tbl_lock);
1048                 return -ENOMEM;
1049         }
1050
1051         spin_lock_init(&hpe->flows_lock);
1052         INIT_LIST_HEAD(&hpe->flows);
1053         INIT_LIST_HEAD(&hpe->dead_peer_wait_list);
1054         hpe->peer_vhca_id = peer_id;
1055         hpe->prio = match_prio;
1056         refcount_set(&hpe->refcnt, 1);
1057         init_completion(&hpe->res_ready);
1058
1059         hash_add(tc->hairpin_tbl, &hpe->hairpin_hlist,
1060                  hash_hairpin_info(peer_id, match_prio));
1061         mutex_unlock(&tc->hairpin_tbl_lock);
1062
1063         params.log_data_size = 16;
1064         params.log_data_size = min_t(u8, params.log_data_size,
1065                                      MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz));
1066         params.log_data_size = max_t(u8, params.log_data_size,
1067                                      MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz));
1068
1069         params.log_num_packets = params.log_data_size -
1070                                  MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev);
1071         params.log_num_packets = min_t(u8, params.log_num_packets,
1072                                        MLX5_CAP_GEN(priv->mdev, log_max_hairpin_num_packets));
1073
1074         params.q_counter = priv->q_counter;
1075         /* set hairpin pair per each 50Gbs share of the link */
1076         mlx5e_port_max_linkspeed(priv->mdev, &link_speed);
1077         link_speed = max_t(u32, link_speed, 50000);
1078         link_speed64 = link_speed;
1079         do_div(link_speed64, 50000);
1080         params.num_channels = link_speed64;
1081
1082         hp = mlx5e_hairpin_create(priv, &params, peer_ifindex);
1083         hpe->hp = hp;
1084         complete_all(&hpe->res_ready);
1085         if (IS_ERR(hp)) {
1086                 err = PTR_ERR(hp);
1087                 goto out_err;
1088         }
1089
1090         netdev_dbg(priv->netdev, "add hairpin: tirn %x rqn %x peer %s sqn %x prio %d (log) data %d packets %d\n",
1091                    mlx5e_tir_get_tirn(&hp->direct_tir), hp->pair->rqn[0],
1092                    dev_name(hp->pair->peer_mdev->device),
1093                    hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets);
1094
1095 attach_flow:
1096         if (hpe->hp->num_channels > 1) {
1097                 flow_flag_set(flow, HAIRPIN_RSS);
1098                 flow->attr->nic_attr->hairpin_ft =
1099                         mlx5_get_ttc_flow_table(hpe->hp->ttc);
1100         } else {
1101                 flow->attr->nic_attr->hairpin_tirn = mlx5e_tir_get_tirn(&hpe->hp->direct_tir);
1102         }
1103
1104         flow->hpe = hpe;
1105         spin_lock(&hpe->flows_lock);
1106         list_add(&flow->hairpin, &hpe->flows);
1107         spin_unlock(&hpe->flows_lock);
1108
1109         return 0;
1110
1111 out_err:
1112         mlx5e_hairpin_put(priv, hpe);
1113         return err;
1114 }
1115
1116 static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv,
1117                                    struct mlx5e_tc_flow *flow)
1118 {
1119         /* flow wasn't fully initialized */
1120         if (!flow->hpe)
1121                 return;
1122
1123         spin_lock(&flow->hpe->flows_lock);
1124         list_del(&flow->hairpin);
1125         spin_unlock(&flow->hpe->flows_lock);
1126
1127         mlx5e_hairpin_put(priv, flow->hpe);
1128         flow->hpe = NULL;
1129 }
1130
1131 struct mlx5_flow_handle *
1132 mlx5e_add_offloaded_nic_rule(struct mlx5e_priv *priv,
1133                              struct mlx5_flow_spec *spec,
1134                              struct mlx5_flow_attr *attr)
1135 {
1136         struct mlx5_flow_context *flow_context = &spec->flow_context;
1137         struct mlx5e_vlan_table *vlan = mlx5e_fs_get_vlan(priv->fs);
1138         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
1139         struct mlx5_nic_flow_attr *nic_attr = attr->nic_attr;
1140         struct mlx5_flow_destination dest[2] = {};
1141         struct mlx5_fs_chains *nic_chains;
1142         struct mlx5_flow_act flow_act = {
1143                 .action = attr->action,
1144                 .flags    = FLOW_ACT_NO_APPEND,
1145         };
1146         struct mlx5_flow_handle *rule;
1147         struct mlx5_flow_table *ft;
1148         int dest_ix = 0;
1149
1150         nic_chains = mlx5e_nic_chains(tc);
1151         flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
1152         flow_context->flow_tag = nic_attr->flow_tag;
1153
1154         if (attr->dest_ft) {
1155                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
1156                 dest[dest_ix].ft = attr->dest_ft;
1157                 dest_ix++;
1158         } else if (nic_attr->hairpin_ft) {
1159                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
1160                 dest[dest_ix].ft = nic_attr->hairpin_ft;
1161                 dest_ix++;
1162         } else if (nic_attr->hairpin_tirn) {
1163                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
1164                 dest[dest_ix].tir_num = nic_attr->hairpin_tirn;
1165                 dest_ix++;
1166         } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
1167                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
1168                 if (attr->dest_chain) {
1169                         dest[dest_ix].ft = mlx5_chains_get_table(nic_chains,
1170                                                                  attr->dest_chain, 1,
1171                                                                  MLX5E_TC_FT_LEVEL);
1172                         if (IS_ERR(dest[dest_ix].ft))
1173                                 return ERR_CAST(dest[dest_ix].ft);
1174                 } else {
1175                         dest[dest_ix].ft = mlx5e_vlan_get_flowtable(vlan);
1176                 }
1177                 dest_ix++;
1178         }
1179
1180         if (dest[0].type == MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE &&
1181             MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level))
1182                 flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
1183
1184         if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1185                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
1186                 dest[dest_ix].counter_id = mlx5_fc_id(attr->counter);
1187                 dest_ix++;
1188         }
1189
1190         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
1191                 flow_act.modify_hdr = attr->modify_hdr;
1192
1193         mutex_lock(&tc->t_lock);
1194         if (IS_ERR_OR_NULL(tc->t)) {
1195                 /* Create the root table here if doesn't exist yet */
1196                 tc->t =
1197                         mlx5_chains_get_table(nic_chains, 0, 1, MLX5E_TC_FT_LEVEL);
1198
1199                 if (IS_ERR(tc->t)) {
1200                         mutex_unlock(&tc->t_lock);
1201                         netdev_err(priv->netdev,
1202                                    "Failed to create tc offload table\n");
1203                         rule = ERR_CAST(tc->t);
1204                         goto err_ft_get;
1205                 }
1206         }
1207         mutex_unlock(&tc->t_lock);
1208
1209         if (attr->chain || attr->prio)
1210                 ft = mlx5_chains_get_table(nic_chains,
1211                                            attr->chain, attr->prio,
1212                                            MLX5E_TC_FT_LEVEL);
1213         else
1214                 ft = attr->ft;
1215
1216         if (IS_ERR(ft)) {
1217                 rule = ERR_CAST(ft);
1218                 goto err_ft_get;
1219         }
1220
1221         if (attr->outer_match_level != MLX5_MATCH_NONE)
1222                 spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
1223
1224         rule = mlx5_add_flow_rules(ft, spec,
1225                                    &flow_act, dest, dest_ix);
1226         if (IS_ERR(rule))
1227                 goto err_rule;
1228
1229         return rule;
1230
1231 err_rule:
1232         if (attr->chain || attr->prio)
1233                 mlx5_chains_put_table(nic_chains,
1234                                       attr->chain, attr->prio,
1235                                       MLX5E_TC_FT_LEVEL);
1236 err_ft_get:
1237         if (attr->dest_chain)
1238                 mlx5_chains_put_table(nic_chains,
1239                                       attr->dest_chain, 1,
1240                                       MLX5E_TC_FT_LEVEL);
1241
1242         return ERR_CAST(rule);
1243 }
1244
1245 static int
1246 alloc_flow_attr_counter(struct mlx5_core_dev *counter_dev,
1247                         struct mlx5_flow_attr *attr)
1248
1249 {
1250         struct mlx5_fc *counter;
1251
1252         counter = mlx5_fc_create(counter_dev, true);
1253         if (IS_ERR(counter))
1254                 return PTR_ERR(counter);
1255
1256         attr->counter = counter;
1257         return 0;
1258 }
1259
1260 static int
1261 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
1262                       struct mlx5e_tc_flow *flow,
1263                       struct netlink_ext_ack *extack)
1264 {
1265         struct mlx5e_tc_flow_parse_attr *parse_attr;
1266         struct mlx5_flow_attr *attr = flow->attr;
1267         struct mlx5_core_dev *dev = priv->mdev;
1268         int err;
1269
1270         parse_attr = attr->parse_attr;
1271
1272         if (flow_flag_test(flow, HAIRPIN)) {
1273                 err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack);
1274                 if (err)
1275                         return err;
1276         }
1277
1278         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1279                 err = alloc_flow_attr_counter(dev, attr);
1280                 if (err)
1281                         return err;
1282         }
1283
1284         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
1285                 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
1286                 mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts);
1287                 if (err)
1288                         return err;
1289         }
1290
1291         if (attr->flags & MLX5_ATTR_FLAG_CT)
1292                 flow->rule[0] = mlx5_tc_ct_flow_offload(get_ct_priv(priv), &parse_attr->spec,
1293                                                         attr, &parse_attr->mod_hdr_acts);
1294         else
1295                 flow->rule[0] = mlx5e_add_offloaded_nic_rule(priv, &parse_attr->spec,
1296                                                              attr);
1297
1298         return PTR_ERR_OR_ZERO(flow->rule[0]);
1299 }
1300
1301 void mlx5e_del_offloaded_nic_rule(struct mlx5e_priv *priv,
1302                                   struct mlx5_flow_handle *rule,
1303                                   struct mlx5_flow_attr *attr)
1304 {
1305         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
1306         struct mlx5_fs_chains *nic_chains;
1307
1308         nic_chains = mlx5e_nic_chains(tc);
1309         mlx5_del_flow_rules(rule);
1310
1311         if (attr->chain || attr->prio)
1312                 mlx5_chains_put_table(nic_chains, attr->chain, attr->prio,
1313                                       MLX5E_TC_FT_LEVEL);
1314
1315         if (attr->dest_chain)
1316                 mlx5_chains_put_table(nic_chains, attr->dest_chain, 1,
1317                                       MLX5E_TC_FT_LEVEL);
1318 }
1319
1320 static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
1321                                   struct mlx5e_tc_flow *flow)
1322 {
1323         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
1324         struct mlx5_flow_attr *attr = flow->attr;
1325
1326         flow_flag_clear(flow, OFFLOADED);
1327
1328         if (attr->flags & MLX5_ATTR_FLAG_CT)
1329                 mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), attr);
1330         else if (!IS_ERR_OR_NULL(flow->rule[0]))
1331                 mlx5e_del_offloaded_nic_rule(priv, flow->rule[0], attr);
1332
1333         /* Remove root table if no rules are left to avoid
1334          * extra steering hops.
1335          */
1336         mutex_lock(&tc->t_lock);
1337         if (!mlx5e_tc_num_filters(priv, MLX5_TC_FLAG(NIC_OFFLOAD)) &&
1338             !IS_ERR_OR_NULL(tc->t)) {
1339                 mlx5_chains_put_table(mlx5e_nic_chains(tc), 0, 1, MLX5E_TC_FT_LEVEL);
1340                 tc->t = NULL;
1341         }
1342         mutex_unlock(&tc->t_lock);
1343
1344         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
1345                 mlx5e_detach_mod_hdr(priv, flow);
1346
1347         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
1348                 mlx5_fc_destroy(priv->mdev, attr->counter);
1349
1350         if (flow_flag_test(flow, HAIRPIN))
1351                 mlx5e_hairpin_flow_del(priv, flow);
1352
1353         free_flow_post_acts(flow);
1354
1355         kvfree(attr->parse_attr);
1356         kfree(flow->attr);
1357 }
1358
1359 struct mlx5_flow_handle *
1360 mlx5e_tc_offload_fdb_rules(struct mlx5_eswitch *esw,
1361                            struct mlx5e_tc_flow *flow,
1362                            struct mlx5_flow_spec *spec,
1363                            struct mlx5_flow_attr *attr)
1364 {
1365         struct mlx5_flow_handle *rule;
1366
1367         if (attr->flags & MLX5_ATTR_FLAG_SLOW_PATH)
1368                 return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
1369
1370         rule = mlx5e_tc_rule_offload(flow->priv, spec, attr);
1371
1372         if (IS_ERR(rule))
1373                 return rule;
1374
1375         if (attr->esw_attr->split_count) {
1376                 flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, spec, attr);
1377                 if (IS_ERR(flow->rule[1]))
1378                         goto err_rule1;
1379         }
1380
1381         return rule;
1382
1383 err_rule1:
1384         mlx5e_tc_rule_unoffload(flow->priv, rule, attr);
1385         return flow->rule[1];
1386 }
1387
1388 void mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw,
1389                                   struct mlx5e_tc_flow *flow,
1390                                   struct mlx5_flow_attr *attr)
1391 {
1392         flow_flag_clear(flow, OFFLOADED);
1393
1394         if (attr->flags & MLX5_ATTR_FLAG_SLOW_PATH)
1395                 return mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
1396
1397         if (attr->esw_attr->split_count)
1398                 mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr);
1399
1400         mlx5e_tc_rule_unoffload(flow->priv, flow->rule[0], attr);
1401 }
1402
1403 struct mlx5_flow_handle *
1404 mlx5e_tc_offload_to_slow_path(struct mlx5_eswitch *esw,
1405                               struct mlx5e_tc_flow *flow,
1406                               struct mlx5_flow_spec *spec)
1407 {
1408         struct mlx5e_tc_mod_hdr_acts mod_acts = {};
1409         struct mlx5e_mod_hdr_handle *mh = NULL;
1410         struct mlx5_flow_attr *slow_attr;
1411         struct mlx5_flow_handle *rule;
1412         bool fwd_and_modify_cap;
1413         u32 chain_mapping = 0;
1414         int err;
1415
1416         slow_attr = mlx5_alloc_flow_attr(MLX5_FLOW_NAMESPACE_FDB);
1417         if (!slow_attr)
1418                 return ERR_PTR(-ENOMEM);
1419
1420         memcpy(slow_attr, flow->attr, ESW_FLOW_ATTR_SZ);
1421         slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1422         slow_attr->esw_attr->split_count = 0;
1423         slow_attr->flags |= MLX5_ATTR_FLAG_SLOW_PATH;
1424
1425         fwd_and_modify_cap = MLX5_CAP_ESW_FLOWTABLE((esw)->dev, fdb_modify_header_fwd_to_table);
1426         if (!fwd_and_modify_cap)
1427                 goto skip_restore;
1428
1429         err = mlx5_chains_get_chain_mapping(esw_chains(esw), flow->attr->chain, &chain_mapping);
1430         if (err)
1431                 goto err_get_chain;
1432
1433         err = mlx5e_tc_match_to_reg_set(esw->dev, &mod_acts, MLX5_FLOW_NAMESPACE_FDB,
1434                                         CHAIN_TO_REG, chain_mapping);
1435         if (err)
1436                 goto err_reg_set;
1437
1438         mh = mlx5e_mod_hdr_attach(esw->dev, get_mod_hdr_table(flow->priv, flow),
1439                                   MLX5_FLOW_NAMESPACE_FDB, &mod_acts);
1440         if (IS_ERR(mh)) {
1441                 err = PTR_ERR(mh);
1442                 goto err_attach;
1443         }
1444
1445         slow_attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
1446         slow_attr->modify_hdr = mlx5e_mod_hdr_get(mh);
1447
1448 skip_restore:
1449         rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, slow_attr);
1450         if (IS_ERR(rule)) {
1451                 err = PTR_ERR(rule);
1452                 goto err_offload;
1453         }
1454
1455         flow->slow_mh = mh;
1456         flow->chain_mapping = chain_mapping;
1457         flow_flag_set(flow, SLOW);
1458
1459         mlx5e_mod_hdr_dealloc(&mod_acts);
1460         kfree(slow_attr);
1461
1462         return rule;
1463
1464 err_offload:
1465         if (fwd_and_modify_cap)
1466                 mlx5e_mod_hdr_detach(esw->dev, get_mod_hdr_table(flow->priv, flow), mh);
1467 err_attach:
1468 err_reg_set:
1469         if (fwd_and_modify_cap)
1470                 mlx5_chains_put_chain_mapping(esw_chains(esw), chain_mapping);
1471 err_get_chain:
1472         mlx5e_mod_hdr_dealloc(&mod_acts);
1473         kfree(slow_attr);
1474         return ERR_PTR(err);
1475 }
1476
1477 void mlx5e_tc_unoffload_from_slow_path(struct mlx5_eswitch *esw,
1478                                        struct mlx5e_tc_flow *flow)
1479 {
1480         struct mlx5_flow_attr *slow_attr;
1481
1482         slow_attr = mlx5_alloc_flow_attr(MLX5_FLOW_NAMESPACE_FDB);
1483         if (!slow_attr) {
1484                 mlx5_core_warn(flow->priv->mdev, "Unable to alloc attr to unoffload slow path rule\n");
1485                 return;
1486         }
1487
1488         memcpy(slow_attr, flow->attr, ESW_FLOW_ATTR_SZ);
1489         slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1490         slow_attr->esw_attr->split_count = 0;
1491         slow_attr->flags |= MLX5_ATTR_FLAG_SLOW_PATH;
1492         if (flow->slow_mh) {
1493                 slow_attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
1494                 slow_attr->modify_hdr = mlx5e_mod_hdr_get(flow->slow_mh);
1495         }
1496         mlx5e_tc_unoffload_fdb_rules(esw, flow, slow_attr);
1497         if (flow->slow_mh) {
1498                 mlx5e_mod_hdr_detach(esw->dev, get_mod_hdr_table(flow->priv, flow), flow->slow_mh);
1499                 mlx5_chains_put_chain_mapping(esw_chains(esw), flow->chain_mapping);
1500                 flow->chain_mapping = 0;
1501                 flow->slow_mh = NULL;
1502         }
1503         flow_flag_clear(flow, SLOW);
1504         kfree(slow_attr);
1505 }
1506
1507 /* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this
1508  * function.
1509  */
1510 static void unready_flow_add(struct mlx5e_tc_flow *flow,
1511                              struct list_head *unready_flows)
1512 {
1513         flow_flag_set(flow, NOT_READY);
1514         list_add_tail(&flow->unready, unready_flows);
1515 }
1516
1517 /* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this
1518  * function.
1519  */
1520 static void unready_flow_del(struct mlx5e_tc_flow *flow)
1521 {
1522         list_del(&flow->unready);
1523         flow_flag_clear(flow, NOT_READY);
1524 }
1525
1526 static void add_unready_flow(struct mlx5e_tc_flow *flow)
1527 {
1528         struct mlx5_rep_uplink_priv *uplink_priv;
1529         struct mlx5e_rep_priv *rpriv;
1530         struct mlx5_eswitch *esw;
1531
1532         esw = flow->priv->mdev->priv.eswitch;
1533         rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
1534         uplink_priv = &rpriv->uplink_priv;
1535
1536         mutex_lock(&uplink_priv->unready_flows_lock);
1537         unready_flow_add(flow, &uplink_priv->unready_flows);
1538         mutex_unlock(&uplink_priv->unready_flows_lock);
1539 }
1540
1541 static void remove_unready_flow(struct mlx5e_tc_flow *flow)
1542 {
1543         struct mlx5_rep_uplink_priv *uplink_priv;
1544         struct mlx5e_rep_priv *rpriv;
1545         struct mlx5_eswitch *esw;
1546
1547         esw = flow->priv->mdev->priv.eswitch;
1548         rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
1549         uplink_priv = &rpriv->uplink_priv;
1550
1551         mutex_lock(&uplink_priv->unready_flows_lock);
1552         unready_flow_del(flow);
1553         mutex_unlock(&uplink_priv->unready_flows_lock);
1554 }
1555
1556 bool mlx5e_tc_is_vf_tunnel(struct net_device *out_dev, struct net_device *route_dev)
1557 {
1558         struct mlx5_core_dev *out_mdev, *route_mdev;
1559         struct mlx5e_priv *out_priv, *route_priv;
1560
1561         out_priv = netdev_priv(out_dev);
1562         out_mdev = out_priv->mdev;
1563         route_priv = netdev_priv(route_dev);
1564         route_mdev = route_priv->mdev;
1565
1566         if (out_mdev->coredev_type != MLX5_COREDEV_PF)
1567                 return false;
1568
1569         if (route_mdev->coredev_type != MLX5_COREDEV_VF &&
1570             route_mdev->coredev_type != MLX5_COREDEV_SF)
1571                 return false;
1572
1573         return mlx5e_same_hw_devs(out_priv, route_priv);
1574 }
1575
1576 int mlx5e_tc_query_route_vport(struct net_device *out_dev, struct net_device *route_dev, u16 *vport)
1577 {
1578         struct mlx5e_priv *out_priv, *route_priv;
1579         struct mlx5_devcom *devcom = NULL;
1580         struct mlx5_core_dev *route_mdev;
1581         struct mlx5_eswitch *esw;
1582         u16 vhca_id;
1583         int err;
1584
1585         out_priv = netdev_priv(out_dev);
1586         esw = out_priv->mdev->priv.eswitch;
1587         route_priv = netdev_priv(route_dev);
1588         route_mdev = route_priv->mdev;
1589
1590         vhca_id = MLX5_CAP_GEN(route_mdev, vhca_id);
1591         if (mlx5_lag_is_active(out_priv->mdev)) {
1592                 /* In lag case we may get devices from different eswitch instances.
1593                  * If we failed to get vport num, it means, mostly, that we on the wrong
1594                  * eswitch.
1595                  */
1596                 err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport);
1597                 if (err != -ENOENT)
1598                         return err;
1599
1600                 devcom = out_priv->mdev->priv.devcom;
1601                 esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
1602                 if (!esw)
1603                         return -ENODEV;
1604         }
1605
1606         err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport);
1607         if (devcom)
1608                 mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
1609         return err;
1610 }
1611
1612 int mlx5e_tc_add_flow_mod_hdr(struct mlx5e_priv *priv,
1613                               struct mlx5e_tc_flow *flow,
1614                               struct mlx5_flow_attr *attr)
1615 {
1616         struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts = &attr->parse_attr->mod_hdr_acts;
1617         struct mlx5_modify_hdr *mod_hdr;
1618
1619         mod_hdr = mlx5_modify_header_alloc(priv->mdev,
1620                                            mlx5e_get_flow_namespace(flow),
1621                                            mod_hdr_acts->num_actions,
1622                                            mod_hdr_acts->actions);
1623         if (IS_ERR(mod_hdr))
1624                 return PTR_ERR(mod_hdr);
1625
1626         WARN_ON(attr->modify_hdr);
1627         attr->modify_hdr = mod_hdr;
1628
1629         return 0;
1630 }
1631
1632 static int
1633 set_encap_dests(struct mlx5e_priv *priv,
1634                 struct mlx5e_tc_flow *flow,
1635                 struct mlx5_flow_attr *attr,
1636                 struct netlink_ext_ack *extack,
1637                 bool *encap_valid,
1638                 bool *vf_tun)
1639 {
1640         struct mlx5e_tc_flow_parse_attr *parse_attr;
1641         struct mlx5_esw_flow_attr *esw_attr;
1642         struct net_device *encap_dev = NULL;
1643         struct mlx5e_rep_priv *rpriv;
1644         struct mlx5e_priv *out_priv;
1645         int out_index;
1646         int err = 0;
1647
1648         if (!mlx5e_is_eswitch_flow(flow))
1649                 return 0;
1650
1651         parse_attr = attr->parse_attr;
1652         esw_attr = attr->esw_attr;
1653         *vf_tun = false;
1654         *encap_valid = true;
1655
1656         for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) {
1657                 struct net_device *out_dev;
1658                 int mirred_ifindex;
1659
1660                 if (!(esw_attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP))
1661                         continue;
1662
1663                 mirred_ifindex = parse_attr->mirred_ifindex[out_index];
1664                 out_dev = dev_get_by_index(dev_net(priv->netdev), mirred_ifindex);
1665                 if (!out_dev) {
1666                         NL_SET_ERR_MSG_MOD(extack, "Requested mirred device not found");
1667                         err = -ENODEV;
1668                         goto out;
1669                 }
1670                 err = mlx5e_attach_encap(priv, flow, attr, out_dev, out_index,
1671                                          extack, &encap_dev, encap_valid);
1672                 dev_put(out_dev);
1673                 if (err)
1674                         goto out;
1675
1676                 if (esw_attr->dests[out_index].flags &
1677                     MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE &&
1678                     !esw_attr->dest_int_port)
1679                         *vf_tun = true;
1680
1681                 out_priv = netdev_priv(encap_dev);
1682                 rpriv = out_priv->ppriv;
1683                 esw_attr->dests[out_index].rep = rpriv->rep;
1684                 esw_attr->dests[out_index].mdev = out_priv->mdev;
1685         }
1686
1687         if (*vf_tun && esw_attr->out_count > 1) {
1688                 NL_SET_ERR_MSG_MOD(extack, "VF tunnel encap with mirroring is not supported");
1689                 err = -EOPNOTSUPP;
1690                 goto out;
1691         }
1692
1693 out:
1694         return err;
1695 }
1696
1697 static void
1698 clean_encap_dests(struct mlx5e_priv *priv,
1699                   struct mlx5e_tc_flow *flow,
1700                   struct mlx5_flow_attr *attr,
1701                   bool *vf_tun)
1702 {
1703         struct mlx5_esw_flow_attr *esw_attr;
1704         int out_index;
1705
1706         if (!mlx5e_is_eswitch_flow(flow))
1707                 return;
1708
1709         esw_attr = attr->esw_attr;
1710         *vf_tun = false;
1711
1712         for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) {
1713                 if (!(esw_attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP))
1714                         continue;
1715
1716                 if (esw_attr->dests[out_index].flags &
1717                     MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE &&
1718                     !esw_attr->dest_int_port)
1719                         *vf_tun = true;
1720
1721                 mlx5e_detach_encap(priv, flow, attr, out_index);
1722                 kfree(attr->parse_attr->tun_info[out_index]);
1723         }
1724 }
1725
1726 static int
1727 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
1728                       struct mlx5e_tc_flow *flow,
1729                       struct netlink_ext_ack *extack)
1730 {
1731         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1732         struct mlx5e_tc_flow_parse_attr *parse_attr;
1733         struct mlx5_flow_attr *attr = flow->attr;
1734         struct mlx5_esw_flow_attr *esw_attr;
1735         bool vf_tun, encap_valid;
1736         u32 max_prio, max_chain;
1737         int err = 0;
1738
1739         parse_attr = attr->parse_attr;
1740         esw_attr = attr->esw_attr;
1741
1742         /* We check chain range only for tc flows.
1743          * For ft flows, we checked attr->chain was originally 0 and set it to
1744          * FDB_FT_CHAIN which is outside tc range.
1745          * See mlx5e_rep_setup_ft_cb().
1746          */
1747         max_chain = mlx5_chains_get_chain_range(esw_chains(esw));
1748         if (!mlx5e_is_ft_flow(flow) && attr->chain > max_chain) {
1749                 NL_SET_ERR_MSG_MOD(extack,
1750                                    "Requested chain is out of supported range");
1751                 err = -EOPNOTSUPP;
1752                 goto err_out;
1753         }
1754
1755         max_prio = mlx5_chains_get_prio_range(esw_chains(esw));
1756         if (attr->prio > max_prio) {
1757                 NL_SET_ERR_MSG_MOD(extack,
1758                                    "Requested priority is out of supported range");
1759                 err = -EOPNOTSUPP;
1760                 goto err_out;
1761         }
1762
1763         if (flow_flag_test(flow, TUN_RX)) {
1764                 err = mlx5e_attach_decap_route(priv, flow);
1765                 if (err)
1766                         goto err_out;
1767
1768                 if (!attr->chain && esw_attr->int_port &&
1769                     attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
1770                         /* If decap route device is internal port, change the
1771                          * source vport value in reg_c0 back to uplink just in
1772                          * case the rule performs goto chain > 0. If we have a miss
1773                          * on chain > 0 we want the metadata regs to hold the
1774                          * chain id so SW will resume handling of this packet
1775                          * from the proper chain.
1776                          */
1777                         u32 metadata = mlx5_eswitch_get_vport_metadata_for_set(esw,
1778                                                                         esw_attr->in_rep->vport);
1779
1780                         err = mlx5e_tc_match_to_reg_set(priv->mdev, &parse_attr->mod_hdr_acts,
1781                                                         MLX5_FLOW_NAMESPACE_FDB, VPORT_TO_REG,
1782                                                         metadata);
1783                         if (err)
1784                                 goto err_out;
1785
1786                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
1787                 }
1788         }
1789
1790         if (flow_flag_test(flow, L3_TO_L2_DECAP)) {
1791                 err = mlx5e_attach_decap(priv, flow, extack);
1792                 if (err)
1793                         goto err_out;
1794         }
1795
1796         if (netif_is_ovs_master(parse_attr->filter_dev)) {
1797                 struct mlx5e_tc_int_port *int_port;
1798
1799                 if (attr->chain) {
1800                         NL_SET_ERR_MSG_MOD(extack,
1801                                            "Internal port rule is only supported on chain 0");
1802                         err = -EOPNOTSUPP;
1803                         goto err_out;
1804                 }
1805
1806                 if (attr->dest_chain) {
1807                         NL_SET_ERR_MSG_MOD(extack,
1808                                            "Internal port rule offload doesn't support goto action");
1809                         err = -EOPNOTSUPP;
1810                         goto err_out;
1811                 }
1812
1813                 int_port = mlx5e_tc_int_port_get(mlx5e_get_int_port_priv(priv),
1814                                                  parse_attr->filter_dev->ifindex,
1815                                                  flow_flag_test(flow, EGRESS) ?
1816                                                  MLX5E_TC_INT_PORT_EGRESS :
1817                                                  MLX5E_TC_INT_PORT_INGRESS);
1818                 if (IS_ERR(int_port)) {
1819                         err = PTR_ERR(int_port);
1820                         goto err_out;
1821                 }
1822
1823                 esw_attr->int_port = int_port;
1824         }
1825
1826         err = set_encap_dests(priv, flow, attr, extack, &encap_valid, &vf_tun);
1827         if (err)
1828                 goto err_out;
1829
1830         err = mlx5_eswitch_add_vlan_action(esw, attr);
1831         if (err)
1832                 goto err_out;
1833
1834         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
1835                 if (vf_tun) {
1836                         err = mlx5e_tc_add_flow_mod_hdr(priv, flow, attr);
1837                         if (err)
1838                                 goto err_out;
1839                 } else {
1840                         err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
1841                         if (err)
1842                                 goto err_out;
1843                 }
1844         }
1845
1846         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1847                 err = alloc_flow_attr_counter(esw_attr->counter_dev, attr);
1848                 if (err)
1849                         goto err_out;
1850         }
1851
1852         /* we get here if one of the following takes place:
1853          * (1) there's no error
1854          * (2) there's an encap action and we don't have valid neigh
1855          */
1856         if (!encap_valid || flow_flag_test(flow, SLOW))
1857                 flow->rule[0] = mlx5e_tc_offload_to_slow_path(esw, flow, &parse_attr->spec);
1858         else
1859                 flow->rule[0] = mlx5e_tc_offload_fdb_rules(esw, flow, &parse_attr->spec, attr);
1860
1861         if (IS_ERR(flow->rule[0])) {
1862                 err = PTR_ERR(flow->rule[0]);
1863                 goto err_out;
1864         }
1865         flow_flag_set(flow, OFFLOADED);
1866
1867         return 0;
1868
1869 err_out:
1870         flow_flag_set(flow, FAILED);
1871         return err;
1872 }
1873
1874 static bool mlx5_flow_has_geneve_opt(struct mlx5e_tc_flow *flow)
1875 {
1876         struct mlx5_flow_spec *spec = &flow->attr->parse_attr->spec;
1877         void *headers_v = MLX5_ADDR_OF(fte_match_param,
1878                                        spec->match_value,
1879                                        misc_parameters_3);
1880         u32 geneve_tlv_opt_0_data = MLX5_GET(fte_match_set_misc3,
1881                                              headers_v,
1882                                              geneve_tlv_option_0_data);
1883
1884         return !!geneve_tlv_opt_0_data;
1885 }
1886
1887 static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
1888                                   struct mlx5e_tc_flow *flow)
1889 {
1890         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1891         struct mlx5_flow_attr *attr = flow->attr;
1892         struct mlx5_esw_flow_attr *esw_attr;
1893         bool vf_tun;
1894
1895         esw_attr = attr->esw_attr;
1896         mlx5e_put_flow_tunnel_id(flow);
1897
1898         if (flow_flag_test(flow, NOT_READY))
1899                 remove_unready_flow(flow);
1900
1901         if (mlx5e_is_offloaded_flow(flow)) {
1902                 if (flow_flag_test(flow, SLOW))
1903                         mlx5e_tc_unoffload_from_slow_path(esw, flow);
1904                 else
1905                         mlx5e_tc_unoffload_fdb_rules(esw, flow, attr);
1906         }
1907         complete_all(&flow->del_hw_done);
1908
1909         if (mlx5_flow_has_geneve_opt(flow))
1910                 mlx5_geneve_tlv_option_del(priv->mdev->geneve);
1911
1912         mlx5_eswitch_del_vlan_action(esw, attr);
1913
1914         if (flow->decap_route)
1915                 mlx5e_detach_decap_route(priv, flow);
1916
1917         clean_encap_dests(priv, flow, attr, &vf_tun);
1918
1919         mlx5_tc_ct_match_del(get_ct_priv(priv), &flow->attr->ct_attr);
1920
1921         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
1922                 mlx5e_mod_hdr_dealloc(&attr->parse_attr->mod_hdr_acts);
1923                 if (vf_tun && attr->modify_hdr)
1924                         mlx5_modify_header_dealloc(priv->mdev, attr->modify_hdr);
1925                 else
1926                         mlx5e_detach_mod_hdr(priv, flow);
1927         }
1928
1929         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
1930                 mlx5_fc_destroy(esw_attr->counter_dev, attr->counter);
1931
1932         if (esw_attr->int_port)
1933                 mlx5e_tc_int_port_put(mlx5e_get_int_port_priv(priv), esw_attr->int_port);
1934
1935         if (esw_attr->dest_int_port)
1936                 mlx5e_tc_int_port_put(mlx5e_get_int_port_priv(priv), esw_attr->dest_int_port);
1937
1938         if (flow_flag_test(flow, L3_TO_L2_DECAP))
1939                 mlx5e_detach_decap(priv, flow);
1940
1941         free_flow_post_acts(flow);
1942
1943         if (flow->attr->lag.count)
1944                 mlx5_lag_del_mpesw_rule(esw->dev);
1945
1946         kvfree(attr->esw_attr->rx_tun_attr);
1947         kvfree(attr->parse_attr);
1948         kfree(flow->attr);
1949 }
1950
1951 struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow)
1952 {
1953         struct mlx5_flow_attr *attr;
1954
1955         attr = list_first_entry(&flow->attrs, struct mlx5_flow_attr, list);
1956         return attr->counter;
1957 }
1958
1959 /* Iterate over tmp_list of flows attached to flow_list head. */
1960 void mlx5e_put_flow_list(struct mlx5e_priv *priv, struct list_head *flow_list)
1961 {
1962         struct mlx5e_tc_flow *flow, *tmp;
1963
1964         list_for_each_entry_safe(flow, tmp, flow_list, tmp_list)
1965                 mlx5e_flow_put(priv, flow);
1966 }
1967
1968 static void __mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
1969 {
1970         struct mlx5_eswitch *esw = flow->priv->mdev->priv.eswitch;
1971
1972         if (!flow_flag_test(flow, ESWITCH) ||
1973             !flow_flag_test(flow, DUP))
1974                 return;
1975
1976         mutex_lock(&esw->offloads.peer_mutex);
1977         list_del(&flow->peer);
1978         mutex_unlock(&esw->offloads.peer_mutex);
1979
1980         flow_flag_clear(flow, DUP);
1981
1982         if (refcount_dec_and_test(&flow->peer_flow->refcnt)) {
1983                 mlx5e_tc_del_fdb_flow(flow->peer_flow->priv, flow->peer_flow);
1984                 kfree(flow->peer_flow);
1985         }
1986
1987         flow->peer_flow = NULL;
1988 }
1989
1990 static void mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
1991 {
1992         struct mlx5_core_dev *dev = flow->priv->mdev;
1993         struct mlx5_devcom *devcom = dev->priv.devcom;
1994         struct mlx5_eswitch *peer_esw;
1995
1996         peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
1997         if (!peer_esw)
1998                 return;
1999
2000         __mlx5e_tc_del_fdb_peer_flow(flow);
2001         mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
2002 }
2003
2004 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
2005                               struct mlx5e_tc_flow *flow)
2006 {
2007         if (mlx5e_is_eswitch_flow(flow)) {
2008                 mlx5e_tc_del_fdb_peer_flow(flow);
2009                 mlx5e_tc_del_fdb_flow(priv, flow);
2010         } else {
2011                 mlx5e_tc_del_nic_flow(priv, flow);
2012         }
2013 }
2014
2015 static bool flow_requires_tunnel_mapping(u32 chain, struct flow_cls_offload *f)
2016 {
2017         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
2018         struct flow_action *flow_action = &rule->action;
2019         const struct flow_action_entry *act;
2020         int i;
2021
2022         if (chain)
2023                 return false;
2024
2025         flow_action_for_each(i, act, flow_action) {
2026                 switch (act->id) {
2027                 case FLOW_ACTION_GOTO:
2028                         return true;
2029                 case FLOW_ACTION_SAMPLE:
2030                         return true;
2031                 default:
2032                         continue;
2033                 }
2034         }
2035
2036         return false;
2037 }
2038
2039 static int
2040 enc_opts_is_dont_care_or_full_match(struct mlx5e_priv *priv,
2041                                     struct flow_dissector_key_enc_opts *opts,
2042                                     struct netlink_ext_ack *extack,
2043                                     bool *dont_care)
2044 {
2045         struct geneve_opt *opt;
2046         int off = 0;
2047
2048         *dont_care = true;
2049
2050         while (opts->len > off) {
2051                 opt = (struct geneve_opt *)&opts->data[off];
2052
2053                 if (!(*dont_care) || opt->opt_class || opt->type ||
2054                     memchr_inv(opt->opt_data, 0, opt->length * 4)) {
2055                         *dont_care = false;
2056
2057                         if (opt->opt_class != htons(U16_MAX) ||
2058                             opt->type != U8_MAX) {
2059                                 NL_SET_ERR_MSG_MOD(extack,
2060                                                    "Partial match of tunnel options in chain > 0 isn't supported");
2061                                 netdev_warn(priv->netdev,
2062                                             "Partial match of tunnel options in chain > 0 isn't supported");
2063                                 return -EOPNOTSUPP;
2064                         }
2065                 }
2066
2067                 off += sizeof(struct geneve_opt) + opt->length * 4;
2068         }
2069
2070         return 0;
2071 }
2072
2073 #define COPY_DISSECTOR(rule, diss_key, dst)\
2074 ({ \
2075         struct flow_rule *__rule = (rule);\
2076         typeof(dst) __dst = dst;\
2077 \
2078         memcpy(__dst,\
2079                skb_flow_dissector_target(__rule->match.dissector,\
2080                                          diss_key,\
2081                                          __rule->match.key),\
2082                sizeof(*__dst));\
2083 })
2084
2085 static int mlx5e_get_flow_tunnel_id(struct mlx5e_priv *priv,
2086                                     struct mlx5e_tc_flow *flow,
2087                                     struct flow_cls_offload *f,
2088                                     struct net_device *filter_dev)
2089 {
2090         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
2091         struct netlink_ext_ack *extack = f->common.extack;
2092         struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts;
2093         struct flow_match_enc_opts enc_opts_match;
2094         struct tunnel_match_enc_opts tun_enc_opts;
2095         struct mlx5_rep_uplink_priv *uplink_priv;
2096         struct mlx5_flow_attr *attr = flow->attr;
2097         struct mlx5e_rep_priv *uplink_rpriv;
2098         struct tunnel_match_key tunnel_key;
2099         bool enc_opts_is_dont_care = true;
2100         u32 tun_id, enc_opts_id = 0;
2101         struct mlx5_eswitch *esw;
2102         u32 value, mask;
2103         int err;
2104
2105         esw = priv->mdev->priv.eswitch;
2106         uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
2107         uplink_priv = &uplink_rpriv->uplink_priv;
2108
2109         memset(&tunnel_key, 0, sizeof(tunnel_key));
2110         COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL,
2111                        &tunnel_key.enc_control);
2112         if (tunnel_key.enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS)
2113                 COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
2114                                &tunnel_key.enc_ipv4);
2115         else
2116                 COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
2117                                &tunnel_key.enc_ipv6);
2118         COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IP, &tunnel_key.enc_ip);
2119         COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_PORTS,
2120                        &tunnel_key.enc_tp);
2121         COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_KEYID,
2122                        &tunnel_key.enc_key_id);
2123         tunnel_key.filter_ifindex = filter_dev->ifindex;
2124
2125         err = mapping_add(uplink_priv->tunnel_mapping, &tunnel_key, &tun_id);
2126         if (err)
2127                 return err;
2128
2129         flow_rule_match_enc_opts(rule, &enc_opts_match);
2130         err = enc_opts_is_dont_care_or_full_match(priv,
2131                                                   enc_opts_match.mask,
2132                                                   extack,
2133                                                   &enc_opts_is_dont_care);
2134         if (err)
2135                 goto err_enc_opts;
2136
2137         if (!enc_opts_is_dont_care) {
2138                 memset(&tun_enc_opts, 0, sizeof(tun_enc_opts));
2139                 memcpy(&tun_enc_opts.key, enc_opts_match.key,
2140                        sizeof(*enc_opts_match.key));
2141                 memcpy(&tun_enc_opts.mask, enc_opts_match.mask,
2142                        sizeof(*enc_opts_match.mask));
2143
2144                 err = mapping_add(uplink_priv->tunnel_enc_opts_mapping,
2145                                   &tun_enc_opts, &enc_opts_id);
2146                 if (err)
2147                         goto err_enc_opts;
2148         }
2149
2150         value = tun_id << ENC_OPTS_BITS | enc_opts_id;
2151         mask = enc_opts_id ? TUNNEL_ID_MASK :
2152                              (TUNNEL_ID_MASK & ~ENC_OPTS_BITS_MASK);
2153
2154         if (attr->chain) {
2155                 mlx5e_tc_match_to_reg_match(&attr->parse_attr->spec,
2156                                             TUNNEL_TO_REG, value, mask);
2157         } else {
2158                 mod_hdr_acts = &attr->parse_attr->mod_hdr_acts;
2159                 err = mlx5e_tc_match_to_reg_set(priv->mdev,
2160                                                 mod_hdr_acts, MLX5_FLOW_NAMESPACE_FDB,
2161                                                 TUNNEL_TO_REG, value);
2162                 if (err)
2163                         goto err_set;
2164
2165                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2166         }
2167
2168         flow->attr->tunnel_id = value;
2169         return 0;
2170
2171 err_set:
2172         if (enc_opts_id)
2173                 mapping_remove(uplink_priv->tunnel_enc_opts_mapping,
2174                                enc_opts_id);
2175 err_enc_opts:
2176         mapping_remove(uplink_priv->tunnel_mapping, tun_id);
2177         return err;
2178 }
2179
2180 static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow)
2181 {
2182         u32 enc_opts_id = flow->attr->tunnel_id & ENC_OPTS_BITS_MASK;
2183         u32 tun_id = flow->attr->tunnel_id >> ENC_OPTS_BITS;
2184         struct mlx5_rep_uplink_priv *uplink_priv;
2185         struct mlx5e_rep_priv *uplink_rpriv;
2186         struct mlx5_eswitch *esw;
2187
2188         esw = flow->priv->mdev->priv.eswitch;
2189         uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
2190         uplink_priv = &uplink_rpriv->uplink_priv;
2191
2192         if (tun_id)
2193                 mapping_remove(uplink_priv->tunnel_mapping, tun_id);
2194         if (enc_opts_id)
2195                 mapping_remove(uplink_priv->tunnel_enc_opts_mapping,
2196                                enc_opts_id);
2197 }
2198
2199 void mlx5e_tc_set_ethertype(struct mlx5_core_dev *mdev,
2200                             struct flow_match_basic *match, bool outer,
2201                             void *headers_c, void *headers_v)
2202 {
2203         bool ip_version_cap;
2204
2205         ip_version_cap = outer ?
2206                 MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2207                                           ft_field_support.outer_ip_version) :
2208                 MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
2209                                           ft_field_support.inner_ip_version);
2210
2211         if (ip_version_cap && match->mask->n_proto == htons(0xFFFF) &&
2212             (match->key->n_proto == htons(ETH_P_IP) ||
2213              match->key->n_proto == htons(ETH_P_IPV6))) {
2214                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_version);
2215                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_version,
2216                          match->key->n_proto == htons(ETH_P_IP) ? 4 : 6);
2217         } else {
2218                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
2219                          ntohs(match->mask->n_proto));
2220                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
2221                          ntohs(match->key->n_proto));
2222         }
2223 }
2224
2225 u8 mlx5e_tc_get_ip_version(struct mlx5_flow_spec *spec, bool outer)
2226 {
2227         void *headers_v;
2228         u16 ethertype;
2229         u8 ip_version;
2230
2231         if (outer)
2232                 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
2233         else
2234                 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, inner_headers);
2235
2236         ip_version = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_version);
2237         /* Return ip_version converted from ethertype anyway */
2238         if (!ip_version) {
2239                 ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
2240                 if (ethertype == ETH_P_IP || ethertype == ETH_P_ARP)
2241                         ip_version = 4;
2242                 else if (ethertype == ETH_P_IPV6)
2243                         ip_version = 6;
2244         }
2245         return ip_version;
2246 }
2247
2248 /* Tunnel device follows RFC 6040, see include/net/inet_ecn.h.
2249  * And changes inner ip_ecn depending on inner and outer ip_ecn as follows:
2250  *      +---------+----------------------------------------+
2251  *      |Arriving |         Arriving Outer Header          |
2252  *      |   Inner +---------+---------+---------+----------+
2253  *      |  Header | Not-ECT | ECT(0)  | ECT(1)  |   CE     |
2254  *      +---------+---------+---------+---------+----------+
2255  *      | Not-ECT | Not-ECT | Not-ECT | Not-ECT | <drop>   |
2256  *      |  ECT(0) |  ECT(0) | ECT(0)  | ECT(1)  |   CE*    |
2257  *      |  ECT(1) |  ECT(1) | ECT(1)  | ECT(1)* |   CE*    |
2258  *      |    CE   |   CE    |  CE     | CE      |   CE     |
2259  *      +---------+---------+---------+---------+----------+
2260  *
2261  * Tc matches on inner after decapsulation on tunnel device, but hw offload matches
2262  * the inner ip_ecn value before hardware decap action.
2263  *
2264  * Cells marked are changed from original inner packet ip_ecn value during decap, and
2265  * so matching those values on inner ip_ecn before decap will fail.
2266  *
2267  * The following helper allows offload when inner ip_ecn won't be changed by outer ip_ecn,
2268  * except for the outer ip_ecn = CE, where in all cases inner ip_ecn will be changed to CE,
2269  * and such we can drop the inner ip_ecn=CE match.
2270  */
2271
2272 static int mlx5e_tc_verify_tunnel_ecn(struct mlx5e_priv *priv,
2273                                       struct flow_cls_offload *f,
2274                                       bool *match_inner_ecn)
2275 {
2276         u8 outer_ecn_mask = 0, outer_ecn_key = 0, inner_ecn_mask = 0, inner_ecn_key = 0;
2277         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
2278         struct netlink_ext_ack *extack = f->common.extack;
2279         struct flow_match_ip match;
2280
2281         *match_inner_ecn = true;
2282
2283         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
2284                 flow_rule_match_enc_ip(rule, &match);
2285                 outer_ecn_key = match.key->tos & INET_ECN_MASK;
2286                 outer_ecn_mask = match.mask->tos & INET_ECN_MASK;
2287         }
2288
2289         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
2290                 flow_rule_match_ip(rule, &match);
2291                 inner_ecn_key = match.key->tos & INET_ECN_MASK;
2292                 inner_ecn_mask = match.mask->tos & INET_ECN_MASK;
2293         }
2294
2295         if (outer_ecn_mask != 0 && outer_ecn_mask != INET_ECN_MASK) {
2296                 NL_SET_ERR_MSG_MOD(extack, "Partial match on enc_tos ecn bits isn't supported");
2297                 netdev_warn(priv->netdev, "Partial match on enc_tos ecn bits isn't supported");
2298                 return -EOPNOTSUPP;
2299         }
2300
2301         if (!outer_ecn_mask) {
2302                 if (!inner_ecn_mask)
2303                         return 0;
2304
2305                 NL_SET_ERR_MSG_MOD(extack,
2306                                    "Matching on tos ecn bits without also matching enc_tos ecn bits isn't supported");
2307                 netdev_warn(priv->netdev,
2308                             "Matching on tos ecn bits without also matching enc_tos ecn bits isn't supported");
2309                 return -EOPNOTSUPP;
2310         }
2311
2312         if (inner_ecn_mask && inner_ecn_mask != INET_ECN_MASK) {
2313                 NL_SET_ERR_MSG_MOD(extack,
2314                                    "Partial match on tos ecn bits with match on enc_tos ecn bits isn't supported");
2315                 netdev_warn(priv->netdev,
2316                             "Partial match on tos ecn bits with match on enc_tos ecn bits isn't supported");
2317                 return -EOPNOTSUPP;
2318         }
2319
2320         if (!inner_ecn_mask)
2321                 return 0;
2322
2323         /* Both inner and outer have full mask on ecn */
2324
2325         if (outer_ecn_key == INET_ECN_ECT_1) {
2326                 /* inner ecn might change by DECAP action */
2327
2328                 NL_SET_ERR_MSG_MOD(extack, "Match on enc_tos ecn = ECT(1) isn't supported");
2329                 netdev_warn(priv->netdev, "Match on enc_tos ecn = ECT(1) isn't supported");
2330                 return -EOPNOTSUPP;
2331         }
2332
2333         if (outer_ecn_key != INET_ECN_CE)
2334                 return 0;
2335
2336         if (inner_ecn_key != INET_ECN_CE) {
2337                 /* Can't happen in software, as packet ecn will be changed to CE after decap */
2338                 NL_SET_ERR_MSG_MOD(extack,
2339                                    "Match on tos enc_tos ecn = CE while match on tos ecn != CE isn't supported");
2340                 netdev_warn(priv->netdev,
2341                             "Match on tos enc_tos ecn = CE while match on tos ecn != CE isn't supported");
2342                 return -EOPNOTSUPP;
2343         }
2344
2345         /* outer ecn = CE, inner ecn = CE, as decap will change inner ecn to CE in anycase,
2346          * drop match on inner ecn
2347          */
2348         *match_inner_ecn = false;
2349
2350         return 0;
2351 }
2352
2353 static int parse_tunnel_attr(struct mlx5e_priv *priv,
2354                              struct mlx5e_tc_flow *flow,
2355                              struct mlx5_flow_spec *spec,
2356                              struct flow_cls_offload *f,
2357                              struct net_device *filter_dev,
2358                              u8 *match_level,
2359                              bool *match_inner)
2360 {
2361         struct mlx5e_tc_tunnel *tunnel = mlx5e_get_tc_tun(filter_dev);
2362         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2363         struct netlink_ext_ack *extack = f->common.extack;
2364         bool needs_mapping, sets_mapping;
2365         int err;
2366
2367         if (!mlx5e_is_eswitch_flow(flow)) {
2368                 NL_SET_ERR_MSG_MOD(extack, "Match on tunnel is not supported");
2369                 return -EOPNOTSUPP;
2370         }
2371
2372         needs_mapping = !!flow->attr->chain;
2373         sets_mapping = flow_requires_tunnel_mapping(flow->attr->chain, f);
2374         *match_inner = !needs_mapping;
2375
2376         if ((needs_mapping || sets_mapping) &&
2377             !mlx5_eswitch_reg_c1_loopback_enabled(esw)) {
2378                 NL_SET_ERR_MSG_MOD(extack,
2379                                    "Chains on tunnel devices isn't supported without register loopback support");
2380                 netdev_warn(priv->netdev,
2381                             "Chains on tunnel devices isn't supported without register loopback support");
2382                 return -EOPNOTSUPP;
2383         }
2384
2385         if (!flow->attr->chain) {
2386                 err = mlx5e_tc_tun_parse(filter_dev, priv, spec, f,
2387                                          match_level);
2388                 if (err) {
2389                         NL_SET_ERR_MSG_MOD(extack,
2390                                            "Failed to parse tunnel attributes");
2391                         netdev_warn(priv->netdev,
2392                                     "Failed to parse tunnel attributes");
2393                         return err;
2394                 }
2395
2396                 /* With mpls over udp we decapsulate using packet reformat
2397                  * object
2398                  */
2399                 if (!netif_is_bareudp(filter_dev))
2400                         flow->attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
2401                 err = mlx5e_tc_set_attr_rx_tun(flow, spec);
2402                 if (err)
2403                         return err;
2404         } else if (tunnel && tunnel->tunnel_type == MLX5E_TC_TUNNEL_TYPE_VXLAN) {
2405                 struct mlx5_flow_spec *tmp_spec;
2406
2407                 tmp_spec = kvzalloc(sizeof(*tmp_spec), GFP_KERNEL);
2408                 if (!tmp_spec) {
2409                         NL_SET_ERR_MSG_MOD(extack, "Failed to allocate memory for vxlan tmp spec");
2410                         netdev_warn(priv->netdev, "Failed to allocate memory for vxlan tmp spec");
2411                         return -ENOMEM;
2412                 }
2413                 memcpy(tmp_spec, spec, sizeof(*tmp_spec));
2414
2415                 err = mlx5e_tc_tun_parse(filter_dev, priv, tmp_spec, f, match_level);
2416                 if (err) {
2417                         kvfree(tmp_spec);
2418                         NL_SET_ERR_MSG_MOD(extack, "Failed to parse tunnel attributes");
2419                         netdev_warn(priv->netdev, "Failed to parse tunnel attributes");
2420                         return err;
2421                 }
2422                 err = mlx5e_tc_set_attr_rx_tun(flow, tmp_spec);
2423                 kvfree(tmp_spec);
2424                 if (err)
2425                         return err;
2426         }
2427
2428         if (!needs_mapping && !sets_mapping)
2429                 return 0;
2430
2431         return mlx5e_get_flow_tunnel_id(priv, flow, f, filter_dev);
2432 }
2433
2434 static void *get_match_inner_headers_criteria(struct mlx5_flow_spec *spec)
2435 {
2436         return MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
2437                             inner_headers);
2438 }
2439
2440 static void *get_match_inner_headers_value(struct mlx5_flow_spec *spec)
2441 {
2442         return MLX5_ADDR_OF(fte_match_param, spec->match_value,
2443                             inner_headers);
2444 }
2445
2446 static void *get_match_outer_headers_criteria(struct mlx5_flow_spec *spec)
2447 {
2448         return MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
2449                             outer_headers);
2450 }
2451
2452 static void *get_match_outer_headers_value(struct mlx5_flow_spec *spec)
2453 {
2454         return MLX5_ADDR_OF(fte_match_param, spec->match_value,
2455                             outer_headers);
2456 }
2457
2458 void *mlx5e_get_match_headers_value(u32 flags, struct mlx5_flow_spec *spec)
2459 {
2460         return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
2461                 get_match_inner_headers_value(spec) :
2462                 get_match_outer_headers_value(spec);
2463 }
2464
2465 void *mlx5e_get_match_headers_criteria(u32 flags, struct mlx5_flow_spec *spec)
2466 {
2467         return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
2468                 get_match_inner_headers_criteria(spec) :
2469                 get_match_outer_headers_criteria(spec);
2470 }
2471
2472 static int mlx5e_flower_parse_meta(struct net_device *filter_dev,
2473                                    struct flow_cls_offload *f)
2474 {
2475         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
2476         struct netlink_ext_ack *extack = f->common.extack;
2477         struct net_device *ingress_dev;
2478         struct flow_match_meta match;
2479
2480         if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_META))
2481                 return 0;
2482
2483         flow_rule_match_meta(rule, &match);
2484         if (!match.mask->ingress_ifindex)
2485                 return 0;
2486
2487         if (match.mask->ingress_ifindex != 0xFFFFFFFF) {
2488                 NL_SET_ERR_MSG_MOD(extack, "Unsupported ingress ifindex mask");
2489                 return -EOPNOTSUPP;
2490         }
2491
2492         ingress_dev = __dev_get_by_index(dev_net(filter_dev),
2493                                          match.key->ingress_ifindex);
2494         if (!ingress_dev) {
2495                 NL_SET_ERR_MSG_MOD(extack,
2496                                    "Can't find the ingress port to match on");
2497                 return -ENOENT;
2498         }
2499
2500         if (ingress_dev != filter_dev) {
2501                 NL_SET_ERR_MSG_MOD(extack,
2502                                    "Can't match on the ingress filter port");
2503                 return -EOPNOTSUPP;
2504         }
2505
2506         return 0;
2507 }
2508
2509 static bool skip_key_basic(struct net_device *filter_dev,
2510                            struct flow_cls_offload *f)
2511 {
2512         /* When doing mpls over udp decap, the user needs to provide
2513          * MPLS_UC as the protocol in order to be able to match on mpls
2514          * label fields.  However, the actual ethertype is IP so we want to
2515          * avoid matching on this, otherwise we'll fail the match.
2516          */
2517         if (netif_is_bareudp(filter_dev) && f->common.chain_index == 0)
2518                 return true;
2519
2520         return false;
2521 }
2522
2523 static int __parse_cls_flower(struct mlx5e_priv *priv,
2524                               struct mlx5e_tc_flow *flow,
2525                               struct mlx5_flow_spec *spec,
2526                               struct flow_cls_offload *f,
2527                               struct net_device *filter_dev,
2528                               u8 *inner_match_level, u8 *outer_match_level)
2529 {
2530         struct netlink_ext_ack *extack = f->common.extack;
2531         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
2532                                        outer_headers);
2533         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
2534                                        outer_headers);
2535         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
2536                                     misc_parameters);
2537         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
2538                                     misc_parameters);
2539         void *misc_c_3 = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
2540                                     misc_parameters_3);
2541         void *misc_v_3 = MLX5_ADDR_OF(fte_match_param, spec->match_value,
2542                                     misc_parameters_3);
2543         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
2544         struct flow_dissector *dissector = rule->match.dissector;
2545         enum fs_flow_table_type fs_type;
2546         bool match_inner_ecn = true;
2547         u16 addr_type = 0;
2548         u8 ip_proto = 0;
2549         u8 *match_level;
2550         int err;
2551
2552         fs_type = mlx5e_is_eswitch_flow(flow) ? FS_FT_FDB : FS_FT_NIC_RX;
2553         match_level = outer_match_level;
2554
2555         if (dissector->used_keys &
2556             ~(BIT(FLOW_DISSECTOR_KEY_META) |
2557               BIT(FLOW_DISSECTOR_KEY_CONTROL) |
2558               BIT(FLOW_DISSECTOR_KEY_BASIC) |
2559               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
2560               BIT(FLOW_DISSECTOR_KEY_VLAN) |
2561               BIT(FLOW_DISSECTOR_KEY_CVLAN) |
2562               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
2563               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
2564               BIT(FLOW_DISSECTOR_KEY_PORTS) |
2565               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
2566               BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
2567               BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
2568               BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
2569               BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
2570               BIT(FLOW_DISSECTOR_KEY_TCP) |
2571               BIT(FLOW_DISSECTOR_KEY_IP)  |
2572               BIT(FLOW_DISSECTOR_KEY_CT) |
2573               BIT(FLOW_DISSECTOR_KEY_ENC_IP) |
2574               BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) |
2575               BIT(FLOW_DISSECTOR_KEY_ICMP) |
2576               BIT(FLOW_DISSECTOR_KEY_MPLS))) {
2577                 NL_SET_ERR_MSG_MOD(extack, "Unsupported key");
2578                 netdev_dbg(priv->netdev, "Unsupported key used: 0x%x\n",
2579                            dissector->used_keys);
2580                 return -EOPNOTSUPP;
2581         }
2582
2583         if (mlx5e_get_tc_tun(filter_dev)) {
2584                 bool match_inner = false;
2585
2586                 err = parse_tunnel_attr(priv, flow, spec, f, filter_dev,
2587                                         outer_match_level, &match_inner);
2588                 if (err)
2589                         return err;
2590
2591                 if (match_inner) {
2592                         /* header pointers should point to the inner headers
2593                          * if the packet was decapsulated already.
2594                          * outer headers are set by parse_tunnel_attr.
2595                          */
2596                         match_level = inner_match_level;
2597                         headers_c = get_match_inner_headers_criteria(spec);
2598                         headers_v = get_match_inner_headers_value(spec);
2599                 }
2600
2601                 err = mlx5e_tc_verify_tunnel_ecn(priv, f, &match_inner_ecn);
2602                 if (err)
2603                         return err;
2604         }
2605
2606         err = mlx5e_flower_parse_meta(filter_dev, f);
2607         if (err)
2608                 return err;
2609
2610         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC) &&
2611             !skip_key_basic(filter_dev, f)) {
2612                 struct flow_match_basic match;
2613
2614                 flow_rule_match_basic(rule, &match);
2615                 mlx5e_tc_set_ethertype(priv->mdev, &match,
2616                                        match_level == outer_match_level,
2617                                        headers_c, headers_v);
2618
2619                 if (match.mask->n_proto)
2620                         *match_level = MLX5_MATCH_L2;
2621         }
2622         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) ||
2623             is_vlan_dev(filter_dev)) {
2624                 struct flow_dissector_key_vlan filter_dev_mask;
2625                 struct flow_dissector_key_vlan filter_dev_key;
2626                 struct flow_match_vlan match;
2627
2628                 if (is_vlan_dev(filter_dev)) {
2629                         match.key = &filter_dev_key;
2630                         match.key->vlan_id = vlan_dev_vlan_id(filter_dev);
2631                         match.key->vlan_tpid = vlan_dev_vlan_proto(filter_dev);
2632                         match.key->vlan_priority = 0;
2633                         match.mask = &filter_dev_mask;
2634                         memset(match.mask, 0xff, sizeof(*match.mask));
2635                         match.mask->vlan_priority = 0;
2636                 } else {
2637                         flow_rule_match_vlan(rule, &match);
2638                 }
2639                 if (match.mask->vlan_id ||
2640                     match.mask->vlan_priority ||
2641                     match.mask->vlan_tpid) {
2642                         if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
2643                                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2644                                          svlan_tag, 1);
2645                                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2646                                          svlan_tag, 1);
2647                         } else {
2648                                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2649                                          cvlan_tag, 1);
2650                                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2651                                          cvlan_tag, 1);
2652                         }
2653
2654                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid,
2655                                  match.mask->vlan_id);
2656                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid,
2657                                  match.key->vlan_id);
2658
2659                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio,
2660                                  match.mask->vlan_priority);
2661                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio,
2662                                  match.key->vlan_priority);
2663
2664                         *match_level = MLX5_MATCH_L2;
2665
2666                         if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN) &&
2667                             match.mask->vlan_eth_type &&
2668                             MLX5_CAP_FLOWTABLE_TYPE(priv->mdev,
2669                                                     ft_field_support.outer_second_vid,
2670                                                     fs_type)) {
2671                                 MLX5_SET(fte_match_set_misc, misc_c,
2672                                          outer_second_cvlan_tag, 1);
2673                                 spec->match_criteria_enable |=
2674                                         MLX5_MATCH_MISC_PARAMETERS;
2675                         }
2676                 }
2677         } else if (*match_level != MLX5_MATCH_NONE) {
2678                 /* cvlan_tag enabled in match criteria and
2679                  * disabled in match value means both S & C tags
2680                  * don't exist (untagged of both)
2681                  */
2682                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
2683                 *match_level = MLX5_MATCH_L2;
2684         }
2685
2686         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
2687                 struct flow_match_vlan match;
2688
2689                 flow_rule_match_cvlan(rule, &match);
2690                 if (match.mask->vlan_id ||
2691                     match.mask->vlan_priority ||
2692                     match.mask->vlan_tpid) {
2693                         if (!MLX5_CAP_FLOWTABLE_TYPE(priv->mdev, ft_field_support.outer_second_vid,
2694                                                      fs_type)) {
2695                                 NL_SET_ERR_MSG_MOD(extack,
2696                                                    "Matching on CVLAN is not supported");
2697                                 return -EOPNOTSUPP;
2698                         }
2699
2700                         if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
2701                                 MLX5_SET(fte_match_set_misc, misc_c,
2702                                          outer_second_svlan_tag, 1);
2703                                 MLX5_SET(fte_match_set_misc, misc_v,
2704                                          outer_second_svlan_tag, 1);
2705                         } else {
2706                                 MLX5_SET(fte_match_set_misc, misc_c,
2707                                          outer_second_cvlan_tag, 1);
2708                                 MLX5_SET(fte_match_set_misc, misc_v,
2709                                          outer_second_cvlan_tag, 1);
2710                         }
2711
2712                         MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid,
2713                                  match.mask->vlan_id);
2714                         MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid,
2715                                  match.key->vlan_id);
2716                         MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio,
2717                                  match.mask->vlan_priority);
2718                         MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio,
2719                                  match.key->vlan_priority);
2720
2721                         *match_level = MLX5_MATCH_L2;
2722                         spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS;
2723                 }
2724         }
2725
2726         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
2727                 struct flow_match_eth_addrs match;
2728
2729                 flow_rule_match_eth_addrs(rule, &match);
2730                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2731                                              dmac_47_16),
2732                                 match.mask->dst);
2733                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2734                                              dmac_47_16),
2735                                 match.key->dst);
2736
2737                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2738                                              smac_47_16),
2739                                 match.mask->src);
2740                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2741                                              smac_47_16),
2742                                 match.key->src);
2743
2744                 if (!is_zero_ether_addr(match.mask->src) ||
2745                     !is_zero_ether_addr(match.mask->dst))
2746                         *match_level = MLX5_MATCH_L2;
2747         }
2748
2749         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
2750                 struct flow_match_control match;
2751
2752                 flow_rule_match_control(rule, &match);
2753                 addr_type = match.key->addr_type;
2754
2755                 /* the HW doesn't support frag first/later */
2756                 if (match.mask->flags & FLOW_DIS_FIRST_FRAG) {
2757                         NL_SET_ERR_MSG_MOD(extack, "Match on frag first/later is not supported");
2758                         return -EOPNOTSUPP;
2759                 }
2760
2761                 if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) {
2762                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
2763                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
2764                                  match.key->flags & FLOW_DIS_IS_FRAGMENT);
2765
2766                         /* the HW doesn't need L3 inline to match on frag=no */
2767                         if (!(match.key->flags & FLOW_DIS_IS_FRAGMENT))
2768                                 *match_level = MLX5_MATCH_L2;
2769         /* ***  L2 attributes parsing up to here *** */
2770                         else
2771                                 *match_level = MLX5_MATCH_L3;
2772                 }
2773         }
2774
2775         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
2776                 struct flow_match_basic match;
2777
2778                 flow_rule_match_basic(rule, &match);
2779                 ip_proto = match.key->ip_proto;
2780
2781                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
2782                          match.mask->ip_proto);
2783                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
2784                          match.key->ip_proto);
2785
2786                 if (match.mask->ip_proto)
2787                         *match_level = MLX5_MATCH_L3;
2788         }
2789
2790         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
2791                 struct flow_match_ipv4_addrs match;
2792
2793                 flow_rule_match_ipv4_addrs(rule, &match);
2794                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2795                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
2796                        &match.mask->src, sizeof(match.mask->src));
2797                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2798                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
2799                        &match.key->src, sizeof(match.key->src));
2800                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2801                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2802                        &match.mask->dst, sizeof(match.mask->dst));
2803                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2804                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2805                        &match.key->dst, sizeof(match.key->dst));
2806
2807                 if (match.mask->src || match.mask->dst)
2808                         *match_level = MLX5_MATCH_L3;
2809         }
2810
2811         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
2812                 struct flow_match_ipv6_addrs match;
2813
2814                 flow_rule_match_ipv6_addrs(rule, &match);
2815                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2816                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
2817                        &match.mask->src, sizeof(match.mask->src));
2818                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2819                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
2820                        &match.key->src, sizeof(match.key->src));
2821
2822                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2823                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2824                        &match.mask->dst, sizeof(match.mask->dst));
2825                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2826                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2827                        &match.key->dst, sizeof(match.key->dst));
2828
2829                 if (ipv6_addr_type(&match.mask->src) != IPV6_ADDR_ANY ||
2830                     ipv6_addr_type(&match.mask->dst) != IPV6_ADDR_ANY)
2831                         *match_level = MLX5_MATCH_L3;
2832         }
2833
2834         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
2835                 struct flow_match_ip match;
2836
2837                 flow_rule_match_ip(rule, &match);
2838                 if (match_inner_ecn) {
2839                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn,
2840                                  match.mask->tos & 0x3);
2841                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn,
2842                                  match.key->tos & 0x3);
2843                 }
2844
2845                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp,
2846                          match.mask->tos >> 2);
2847                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp,
2848                          match.key->tos  >> 2);
2849
2850                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit,
2851                          match.mask->ttl);
2852                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit,
2853                          match.key->ttl);
2854
2855                 if (match.mask->ttl &&
2856                     !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
2857                                                 ft_field_support.outer_ipv4_ttl)) {
2858                         NL_SET_ERR_MSG_MOD(extack,
2859                                            "Matching on TTL is not supported");
2860                         return -EOPNOTSUPP;
2861                 }
2862
2863                 if (match.mask->tos || match.mask->ttl)
2864                         *match_level = MLX5_MATCH_L3;
2865         }
2866
2867         /* ***  L3 attributes parsing up to here *** */
2868
2869         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
2870                 struct flow_match_ports match;
2871
2872                 flow_rule_match_ports(rule, &match);
2873                 switch (ip_proto) {
2874                 case IPPROTO_TCP:
2875                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2876                                  tcp_sport, ntohs(match.mask->src));
2877                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2878                                  tcp_sport, ntohs(match.key->src));
2879
2880                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2881                                  tcp_dport, ntohs(match.mask->dst));
2882                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2883                                  tcp_dport, ntohs(match.key->dst));
2884                         break;
2885
2886                 case IPPROTO_UDP:
2887                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2888                                  udp_sport, ntohs(match.mask->src));
2889                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2890                                  udp_sport, ntohs(match.key->src));
2891
2892                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2893                                  udp_dport, ntohs(match.mask->dst));
2894                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2895                                  udp_dport, ntohs(match.key->dst));
2896                         break;
2897                 default:
2898                         NL_SET_ERR_MSG_MOD(extack,
2899                                            "Only UDP and TCP transports are supported for L4 matching");
2900                         netdev_err(priv->netdev,
2901                                    "Only UDP and TCP transport are supported\n");
2902                         return -EINVAL;
2903                 }
2904
2905                 if (match.mask->src || match.mask->dst)
2906                         *match_level = MLX5_MATCH_L4;
2907         }
2908
2909         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) {
2910                 struct flow_match_tcp match;
2911
2912                 flow_rule_match_tcp(rule, &match);
2913                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
2914                          ntohs(match.mask->flags));
2915                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
2916                          ntohs(match.key->flags));
2917
2918                 if (match.mask->flags)
2919                         *match_level = MLX5_MATCH_L4;
2920         }
2921         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ICMP)) {
2922                 struct flow_match_icmp match;
2923
2924                 flow_rule_match_icmp(rule, &match);
2925                 switch (ip_proto) {
2926                 case IPPROTO_ICMP:
2927                         if (!(MLX5_CAP_GEN(priv->mdev, flex_parser_protocols) &
2928                               MLX5_FLEX_PROTO_ICMP)) {
2929                                 NL_SET_ERR_MSG_MOD(extack,
2930                                                    "Match on Flex protocols for ICMP is not supported");
2931                                 return -EOPNOTSUPP;
2932                         }
2933                         MLX5_SET(fte_match_set_misc3, misc_c_3, icmp_type,
2934                                  match.mask->type);
2935                         MLX5_SET(fte_match_set_misc3, misc_v_3, icmp_type,
2936                                  match.key->type);
2937                         MLX5_SET(fte_match_set_misc3, misc_c_3, icmp_code,
2938                                  match.mask->code);
2939                         MLX5_SET(fte_match_set_misc3, misc_v_3, icmp_code,
2940                                  match.key->code);
2941                         break;
2942                 case IPPROTO_ICMPV6:
2943                         if (!(MLX5_CAP_GEN(priv->mdev, flex_parser_protocols) &
2944                               MLX5_FLEX_PROTO_ICMPV6)) {
2945                                 NL_SET_ERR_MSG_MOD(extack,
2946                                                    "Match on Flex protocols for ICMPV6 is not supported");
2947                                 return -EOPNOTSUPP;
2948                         }
2949                         MLX5_SET(fte_match_set_misc3, misc_c_3, icmpv6_type,
2950                                  match.mask->type);
2951                         MLX5_SET(fte_match_set_misc3, misc_v_3, icmpv6_type,
2952                                  match.key->type);
2953                         MLX5_SET(fte_match_set_misc3, misc_c_3, icmpv6_code,
2954                                  match.mask->code);
2955                         MLX5_SET(fte_match_set_misc3, misc_v_3, icmpv6_code,
2956                                  match.key->code);
2957                         break;
2958                 default:
2959                         NL_SET_ERR_MSG_MOD(extack,
2960                                            "Code and type matching only with ICMP and ICMPv6");
2961                         netdev_err(priv->netdev,
2962                                    "Code and type matching only with ICMP and ICMPv6\n");
2963                         return -EINVAL;
2964                 }
2965                 if (match.mask->code || match.mask->type) {
2966                         *match_level = MLX5_MATCH_L4;
2967                         spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_3;
2968                 }
2969         }
2970         /* Currently supported only for MPLS over UDP */
2971         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS) &&
2972             !netif_is_bareudp(filter_dev)) {
2973                 NL_SET_ERR_MSG_MOD(extack,
2974                                    "Matching on MPLS is supported only for MPLS over UDP");
2975                 netdev_err(priv->netdev,
2976                            "Matching on MPLS is supported only for MPLS over UDP\n");
2977                 return -EOPNOTSUPP;
2978         }
2979
2980         return 0;
2981 }
2982
2983 static int parse_cls_flower(struct mlx5e_priv *priv,
2984                             struct mlx5e_tc_flow *flow,
2985                             struct mlx5_flow_spec *spec,
2986                             struct flow_cls_offload *f,
2987                             struct net_device *filter_dev)
2988 {
2989         u8 inner_match_level, outer_match_level, non_tunnel_match_level;
2990         struct netlink_ext_ack *extack = f->common.extack;
2991         struct mlx5_core_dev *dev = priv->mdev;
2992         struct mlx5_eswitch *esw = dev->priv.eswitch;
2993         struct mlx5e_rep_priv *rpriv = priv->ppriv;
2994         struct mlx5_eswitch_rep *rep;
2995         bool is_eswitch_flow;
2996         int err;
2997
2998         inner_match_level = MLX5_MATCH_NONE;
2999         outer_match_level = MLX5_MATCH_NONE;
3000
3001         err = __parse_cls_flower(priv, flow, spec, f, filter_dev,
3002                                  &inner_match_level, &outer_match_level);
3003         non_tunnel_match_level = (inner_match_level == MLX5_MATCH_NONE) ?
3004                                  outer_match_level : inner_match_level;
3005
3006         is_eswitch_flow = mlx5e_is_eswitch_flow(flow);
3007         if (!err && is_eswitch_flow) {
3008                 rep = rpriv->rep;
3009                 if (rep->vport != MLX5_VPORT_UPLINK &&
3010                     (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
3011                     esw->offloads.inline_mode < non_tunnel_match_level)) {
3012                         NL_SET_ERR_MSG_MOD(extack,
3013                                            "Flow is not offloaded due to min inline setting");
3014                         netdev_warn(priv->netdev,
3015                                     "Flow is not offloaded due to min inline setting, required %d actual %d\n",
3016                                     non_tunnel_match_level, esw->offloads.inline_mode);
3017                         return -EOPNOTSUPP;
3018                 }
3019         }
3020
3021         flow->attr->inner_match_level = inner_match_level;
3022         flow->attr->outer_match_level = outer_match_level;
3023
3024
3025         return err;
3026 }
3027
3028 struct mlx5_fields {
3029         u8  field;
3030         u8  field_bsize;
3031         u32 field_mask;
3032         u32 offset;
3033         u32 match_offset;
3034 };
3035
3036 #define OFFLOAD(fw_field, field_bsize, field_mask, field, off, match_field) \
3037                 {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, field_bsize, field_mask, \
3038                  offsetof(struct pedit_headers, field) + (off), \
3039                  MLX5_BYTE_OFF(fte_match_set_lyr_2_4, match_field)}
3040
3041 /* masked values are the same and there are no rewrites that do not have a
3042  * match.
3043  */
3044 #define SAME_VAL_MASK(type, valp, maskp, matchvalp, matchmaskp) ({ \
3045         type matchmaskx = *(type *)(matchmaskp); \
3046         type matchvalx = *(type *)(matchvalp); \
3047         type maskx = *(type *)(maskp); \
3048         type valx = *(type *)(valp); \
3049         \
3050         (valx & maskx) == (matchvalx & matchmaskx) && !(maskx & (maskx ^ \
3051                                                                  matchmaskx)); \
3052 })
3053
3054 static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp,
3055                          void *matchmaskp, u8 bsize)
3056 {
3057         bool same = false;
3058
3059         switch (bsize) {
3060         case 8:
3061                 same = SAME_VAL_MASK(u8, valp, maskp, matchvalp, matchmaskp);
3062                 break;
3063         case 16:
3064                 same = SAME_VAL_MASK(u16, valp, maskp, matchvalp, matchmaskp);
3065                 break;
3066         case 32:
3067                 same = SAME_VAL_MASK(u32, valp, maskp, matchvalp, matchmaskp);
3068                 break;
3069         }
3070
3071         return same;
3072 }
3073
3074 static struct mlx5_fields fields[] = {
3075         OFFLOAD(DMAC_47_16, 32, U32_MAX, eth.h_dest[0], 0, dmac_47_16),
3076         OFFLOAD(DMAC_15_0,  16, U16_MAX, eth.h_dest[4], 0, dmac_15_0),
3077         OFFLOAD(SMAC_47_16, 32, U32_MAX, eth.h_source[0], 0, smac_47_16),
3078         OFFLOAD(SMAC_15_0,  16, U16_MAX, eth.h_source[4], 0, smac_15_0),
3079         OFFLOAD(ETHERTYPE,  16, U16_MAX, eth.h_proto, 0, ethertype),
3080         OFFLOAD(FIRST_VID,  16, U16_MAX, vlan.h_vlan_TCI, 0, first_vid),
3081
3082         OFFLOAD(IP_DSCP, 8,    0xfc, ip4.tos,   0, ip_dscp),
3083         OFFLOAD(IP_TTL,  8,  U8_MAX, ip4.ttl,   0, ttl_hoplimit),
3084         OFFLOAD(SIPV4,  32, U32_MAX, ip4.saddr, 0, src_ipv4_src_ipv6.ipv4_layout.ipv4),
3085         OFFLOAD(DIPV4,  32, U32_MAX, ip4.daddr, 0, dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
3086
3087         OFFLOAD(SIPV6_127_96, 32, U32_MAX, ip6.saddr.s6_addr32[0], 0,
3088                 src_ipv4_src_ipv6.ipv6_layout.ipv6[0]),
3089         OFFLOAD(SIPV6_95_64,  32, U32_MAX, ip6.saddr.s6_addr32[1], 0,
3090                 src_ipv4_src_ipv6.ipv6_layout.ipv6[4]),
3091         OFFLOAD(SIPV6_63_32,  32, U32_MAX, ip6.saddr.s6_addr32[2], 0,
3092                 src_ipv4_src_ipv6.ipv6_layout.ipv6[8]),
3093         OFFLOAD(SIPV6_31_0,   32, U32_MAX, ip6.saddr.s6_addr32[3], 0,
3094                 src_ipv4_src_ipv6.ipv6_layout.ipv6[12]),
3095         OFFLOAD(DIPV6_127_96, 32, U32_MAX, ip6.daddr.s6_addr32[0], 0,
3096                 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[0]),
3097         OFFLOAD(DIPV6_95_64,  32, U32_MAX, ip6.daddr.s6_addr32[1], 0,
3098                 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[4]),
3099         OFFLOAD(DIPV6_63_32,  32, U32_MAX, ip6.daddr.s6_addr32[2], 0,
3100                 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[8]),
3101         OFFLOAD(DIPV6_31_0,   32, U32_MAX, ip6.daddr.s6_addr32[3], 0,
3102                 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[12]),
3103         OFFLOAD(IPV6_HOPLIMIT, 8,  U8_MAX, ip6.hop_limit, 0, ttl_hoplimit),
3104         OFFLOAD(IP_DSCP, 16,  0xc00f, ip6, 0, ip_dscp),
3105
3106         OFFLOAD(TCP_SPORT, 16, U16_MAX, tcp.source,  0, tcp_sport),
3107         OFFLOAD(TCP_DPORT, 16, U16_MAX, tcp.dest,    0, tcp_dport),
3108         /* in linux iphdr tcp_flags is 8 bits long */
3109         OFFLOAD(TCP_FLAGS,  8,  U8_MAX, tcp.ack_seq, 5, tcp_flags),
3110
3111         OFFLOAD(UDP_SPORT, 16, U16_MAX, udp.source, 0, udp_sport),
3112         OFFLOAD(UDP_DPORT, 16, U16_MAX, udp.dest,   0, udp_dport),
3113 };
3114
3115 static unsigned long mask_to_le(unsigned long mask, int size)
3116 {
3117         __be32 mask_be32;
3118         __be16 mask_be16;
3119
3120         if (size == 32) {
3121                 mask_be32 = (__force __be32)(mask);
3122                 mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
3123         } else if (size == 16) {
3124                 mask_be32 = (__force __be32)(mask);
3125                 mask_be16 = *(__be16 *)&mask_be32;
3126                 mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
3127         }
3128
3129         return mask;
3130 }
3131
3132 static int offload_pedit_fields(struct mlx5e_priv *priv,
3133                                 int namespace,
3134                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
3135                                 u32 *action_flags,
3136                                 struct netlink_ext_ack *extack)
3137 {
3138         struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
3139         struct pedit_headers_action *hdrs = parse_attr->hdrs;
3140         void *headers_c, *headers_v, *action, *vals_p;
3141         u32 *s_masks_p, *a_masks_p, s_mask, a_mask;
3142         struct mlx5e_tc_mod_hdr_acts *mod_acts;
3143         unsigned long mask, field_mask;
3144         int i, first, last, next_z;
3145         struct mlx5_fields *f;
3146         u8 cmd;
3147
3148         mod_acts = &parse_attr->mod_hdr_acts;
3149         headers_c = mlx5e_get_match_headers_criteria(*action_flags, &parse_attr->spec);
3150         headers_v = mlx5e_get_match_headers_value(*action_flags, &parse_attr->spec);
3151
3152         set_masks = &hdrs[0].masks;
3153         add_masks = &hdrs[1].masks;
3154         set_vals = &hdrs[0].vals;
3155         add_vals = &hdrs[1].vals;
3156
3157         for (i = 0; i < ARRAY_SIZE(fields); i++) {
3158                 bool skip;
3159
3160                 f = &fields[i];
3161                 /* avoid seeing bits set from previous iterations */
3162                 s_mask = 0;
3163                 a_mask = 0;
3164
3165                 s_masks_p = (void *)set_masks + f->offset;
3166                 a_masks_p = (void *)add_masks + f->offset;
3167
3168                 s_mask = *s_masks_p & f->field_mask;
3169                 a_mask = *a_masks_p & f->field_mask;
3170
3171                 if (!s_mask && !a_mask) /* nothing to offload here */
3172                         continue;
3173
3174                 if (s_mask && a_mask) {
3175                         NL_SET_ERR_MSG_MOD(extack,
3176                                            "can't set and add to the same HW field");
3177                         netdev_warn(priv->netdev,
3178                                     "mlx5: can't set and add to the same HW field (%x)\n",
3179                                     f->field);
3180                         return -EOPNOTSUPP;
3181                 }
3182
3183                 skip = false;
3184                 if (s_mask) {
3185                         void *match_mask = headers_c + f->match_offset;
3186                         void *match_val = headers_v + f->match_offset;
3187
3188                         cmd  = MLX5_ACTION_TYPE_SET;
3189                         mask = s_mask;
3190                         vals_p = (void *)set_vals + f->offset;
3191                         /* don't rewrite if we have a match on the same value */
3192                         if (cmp_val_mask(vals_p, s_masks_p, match_val,
3193                                          match_mask, f->field_bsize))
3194                                 skip = true;
3195                         /* clear to denote we consumed this field */
3196                         *s_masks_p &= ~f->field_mask;
3197                 } else {
3198                         cmd  = MLX5_ACTION_TYPE_ADD;
3199                         mask = a_mask;
3200                         vals_p = (void *)add_vals + f->offset;
3201                         /* add 0 is no change */
3202                         if ((*(u32 *)vals_p & f->field_mask) == 0)
3203                                 skip = true;
3204                         /* clear to denote we consumed this field */
3205                         *a_masks_p &= ~f->field_mask;
3206                 }
3207                 if (skip)
3208                         continue;
3209
3210                 mask = mask_to_le(mask, f->field_bsize);
3211
3212                 first = find_first_bit(&mask, f->field_bsize);
3213                 next_z = find_next_zero_bit(&mask, f->field_bsize, first);
3214                 last  = find_last_bit(&mask, f->field_bsize);
3215                 if (first < next_z && next_z < last) {
3216                         NL_SET_ERR_MSG_MOD(extack,
3217                                            "rewrite of few sub-fields isn't supported");
3218                         netdev_warn(priv->netdev,
3219                                     "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
3220                                     mask);
3221                         return -EOPNOTSUPP;
3222                 }
3223
3224                 action = mlx5e_mod_hdr_alloc(priv->mdev, namespace, mod_acts);
3225                 if (IS_ERR(action)) {
3226                         NL_SET_ERR_MSG_MOD(extack,
3227                                            "too many pedit actions, can't offload");
3228                         mlx5_core_warn(priv->mdev,
3229                                        "mlx5: parsed %d pedit actions, can't do more\n",
3230                                        mod_acts->num_actions);
3231                         return PTR_ERR(action);
3232                 }
3233
3234                 MLX5_SET(set_action_in, action, action_type, cmd);
3235                 MLX5_SET(set_action_in, action, field, f->field);
3236
3237                 if (cmd == MLX5_ACTION_TYPE_SET) {
3238                         int start;
3239
3240                         field_mask = mask_to_le(f->field_mask, f->field_bsize);
3241
3242                         /* if field is bit sized it can start not from first bit */
3243                         start = find_first_bit(&field_mask, f->field_bsize);
3244
3245                         MLX5_SET(set_action_in, action, offset, first - start);
3246                         /* length is num of bits to be written, zero means length of 32 */
3247                         MLX5_SET(set_action_in, action, length, (last - first + 1));
3248                 }
3249
3250                 if (f->field_bsize == 32)
3251                         MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
3252                 else if (f->field_bsize == 16)
3253                         MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
3254                 else if (f->field_bsize == 8)
3255                         MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);
3256
3257                 ++mod_acts->num_actions;
3258         }
3259
3260         return 0;
3261 }
3262
3263 static const struct pedit_headers zero_masks = {};
3264
3265 static int verify_offload_pedit_fields(struct mlx5e_priv *priv,
3266                                        struct mlx5e_tc_flow_parse_attr *parse_attr,
3267                                        struct netlink_ext_ack *extack)
3268 {
3269         struct pedit_headers *cmd_masks;
3270         u8 cmd;
3271
3272         for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
3273                 cmd_masks = &parse_attr->hdrs[cmd].masks;
3274                 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
3275                         NL_SET_ERR_MSG_MOD(extack, "attempt to offload an unsupported field");
3276                         netdev_warn(priv->netdev, "attempt to offload an unsupported field (cmd %d)\n", cmd);
3277                         print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
3278                                        16, 1, cmd_masks, sizeof(zero_masks), true);
3279                         return -EOPNOTSUPP;
3280                 }
3281         }
3282
3283         return 0;
3284 }
3285
3286 static int alloc_tc_pedit_action(struct mlx5e_priv *priv, int namespace,
3287                                  struct mlx5e_tc_flow_parse_attr *parse_attr,
3288                                  u32 *action_flags,
3289                                  struct netlink_ext_ack *extack)
3290 {
3291         int err;
3292
3293         err = offload_pedit_fields(priv, namespace, parse_attr, action_flags, extack);
3294         if (err)
3295                 goto out_dealloc_parsed_actions;
3296
3297         err = verify_offload_pedit_fields(priv, parse_attr, extack);
3298         if (err)
3299                 goto out_dealloc_parsed_actions;
3300
3301         return 0;
3302
3303 out_dealloc_parsed_actions:
3304         mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts);
3305         return err;
3306 }
3307
3308 struct ip_ttl_word {
3309         __u8    ttl;
3310         __u8    protocol;
3311         __sum16 check;
3312 };
3313
3314 struct ipv6_hoplimit_word {
3315         __be16  payload_len;
3316         __u8    nexthdr;
3317         __u8    hop_limit;
3318 };
3319
3320 static bool
3321 is_action_keys_supported(const struct flow_action_entry *act, bool ct_flow,
3322                          bool *modify_ip_header, bool *modify_tuple,
3323                          struct netlink_ext_ack *extack)
3324 {
3325         u32 mask, offset;
3326         u8 htype;
3327
3328         htype = act->mangle.htype;
3329         offset = act->mangle.offset;
3330         mask = ~act->mangle.mask;
3331         /* For IPv4 & IPv6 header check 4 byte word,
3332          * to determine that modified fields
3333          * are NOT ttl & hop_limit only.
3334          */
3335         if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP4) {
3336                 struct ip_ttl_word *ttl_word =
3337                         (struct ip_ttl_word *)&mask;
3338
3339                 if (offset != offsetof(struct iphdr, ttl) ||
3340                     ttl_word->protocol ||
3341                     ttl_word->check) {
3342                         *modify_ip_header = true;
3343                 }
3344
3345                 if (offset >= offsetof(struct iphdr, saddr))
3346                         *modify_tuple = true;
3347
3348                 if (ct_flow && *modify_tuple) {
3349                         NL_SET_ERR_MSG_MOD(extack,
3350                                            "can't offload re-write of ipv4 address with action ct");
3351                         return false;
3352                 }
3353         } else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP6) {
3354                 struct ipv6_hoplimit_word *hoplimit_word =
3355                         (struct ipv6_hoplimit_word *)&mask;
3356
3357                 if (offset != offsetof(struct ipv6hdr, payload_len) ||
3358                     hoplimit_word->payload_len ||
3359                     hoplimit_word->nexthdr) {
3360                         *modify_ip_header = true;
3361                 }
3362
3363                 if (ct_flow && offset >= offsetof(struct ipv6hdr, saddr))
3364                         *modify_tuple = true;
3365
3366                 if (ct_flow && *modify_tuple) {
3367                         NL_SET_ERR_MSG_MOD(extack,
3368                                            "can't offload re-write of ipv6 address with action ct");
3369                         return false;
3370                 }
3371         } else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_TCP ||
3372                    htype == FLOW_ACT_MANGLE_HDR_TYPE_UDP) {
3373                 *modify_tuple = true;
3374                 if (ct_flow) {
3375                         NL_SET_ERR_MSG_MOD(extack,
3376                                            "can't offload re-write of transport header ports with action ct");
3377                         return false;
3378                 }
3379         }
3380
3381         return true;
3382 }
3383
3384 static bool modify_tuple_supported(bool modify_tuple, bool ct_clear,
3385                                    bool ct_flow, struct netlink_ext_ack *extack,
3386                                    struct mlx5e_priv *priv,
3387                                    struct mlx5_flow_spec *spec)
3388 {
3389         if (!modify_tuple || ct_clear)
3390                 return true;
3391
3392         if (ct_flow) {
3393                 NL_SET_ERR_MSG_MOD(extack,
3394                                    "can't offload tuple modification with non-clear ct()");
3395                 netdev_info(priv->netdev,
3396                             "can't offload tuple modification with non-clear ct()");
3397                 return false;
3398         }
3399
3400         /* Add ct_state=-trk match so it will be offloaded for non ct flows
3401          * (or after clear action), as otherwise, since the tuple is changed,
3402          * we can't restore ct state
3403          */
3404         if (mlx5_tc_ct_add_no_trk_match(spec)) {
3405                 NL_SET_ERR_MSG_MOD(extack,
3406                                    "can't offload tuple modification with ct matches and no ct(clear) action");
3407                 netdev_info(priv->netdev,
3408                             "can't offload tuple modification with ct matches and no ct(clear) action");
3409                 return false;
3410         }
3411
3412         return true;
3413 }
3414
3415 static bool modify_header_match_supported(struct mlx5e_priv *priv,
3416                                           struct mlx5_flow_spec *spec,
3417                                           struct flow_action *flow_action,
3418                                           u32 actions, bool ct_flow,
3419                                           bool ct_clear,
3420                                           struct netlink_ext_ack *extack)
3421 {
3422         const struct flow_action_entry *act;
3423         bool modify_ip_header, modify_tuple;
3424         void *headers_c;
3425         void *headers_v;
3426         u16 ethertype;
3427         u8 ip_proto;
3428         int i;
3429
3430         headers_c = mlx5e_get_match_headers_criteria(actions, spec);
3431         headers_v = mlx5e_get_match_headers_value(actions, spec);
3432         ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
3433
3434         /* for non-IP we only re-write MACs, so we're okay */
3435         if (MLX5_GET(fte_match_set_lyr_2_4, headers_c, ip_version) == 0 &&
3436             ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
3437                 goto out_ok;
3438
3439         modify_ip_header = false;
3440         modify_tuple = false;
3441         flow_action_for_each(i, act, flow_action) {
3442                 if (act->id != FLOW_ACTION_MANGLE &&
3443                     act->id != FLOW_ACTION_ADD)
3444                         continue;
3445
3446                 if (!is_action_keys_supported(act, ct_flow,
3447                                               &modify_ip_header,
3448                                               &modify_tuple, extack))
3449                         return false;
3450         }
3451
3452         if (!modify_tuple_supported(modify_tuple, ct_clear, ct_flow, extack,
3453                                     priv, spec))
3454                 return false;
3455
3456         ip_proto = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol);
3457         if (modify_ip_header && ip_proto != IPPROTO_TCP &&
3458             ip_proto != IPPROTO_UDP && ip_proto != IPPROTO_ICMP) {
3459                 NL_SET_ERR_MSG_MOD(extack,
3460                                    "can't offload re-write of non TCP/UDP");
3461                 netdev_info(priv->netdev, "can't offload re-write of ip proto %d\n",
3462                             ip_proto);
3463                 return false;
3464         }
3465
3466 out_ok:
3467         return true;
3468 }
3469
3470 static bool
3471 actions_match_supported_fdb(struct mlx5e_priv *priv,
3472                             struct mlx5e_tc_flow_parse_attr *parse_attr,
3473                             struct mlx5e_tc_flow *flow,
3474                             struct netlink_ext_ack *extack)
3475 {
3476         struct mlx5_esw_flow_attr *esw_attr = flow->attr->esw_attr;
3477         bool ct_flow, ct_clear;
3478
3479         ct_clear = flow->attr->ct_attr.ct_action & TCA_CT_ACT_CLEAR;
3480         ct_flow = flow_flag_test(flow, CT) && !ct_clear;
3481
3482         if (esw_attr->split_count && ct_flow &&
3483             !MLX5_CAP_GEN(esw_attr->in_mdev, reg_c_preserve)) {
3484                 /* All registers used by ct are cleared when using
3485                  * split rules.
3486                  */
3487                 NL_SET_ERR_MSG_MOD(extack, "Can't offload mirroring with action ct");
3488                 return false;
3489         }
3490
3491         if (esw_attr->split_count > 0 && !mlx5_esw_has_fwd_fdb(priv->mdev)) {
3492                 NL_SET_ERR_MSG_MOD(extack,
3493                                    "current firmware doesn't support split rule for port mirroring");
3494                 netdev_warn_once(priv->netdev,
3495                                  "current firmware doesn't support split rule for port mirroring\n");
3496                 return false;
3497         }
3498
3499         return true;
3500 }
3501
3502 static bool
3503 actions_match_supported(struct mlx5e_priv *priv,
3504                         struct flow_action *flow_action,
3505                         u32 actions,
3506                         struct mlx5e_tc_flow_parse_attr *parse_attr,
3507                         struct mlx5e_tc_flow *flow,
3508                         struct netlink_ext_ack *extack)
3509 {
3510         bool ct_flow, ct_clear;
3511
3512         ct_clear = flow->attr->ct_attr.ct_action & TCA_CT_ACT_CLEAR;
3513         ct_flow = flow_flag_test(flow, CT) && !ct_clear;
3514
3515         if (!(actions &
3516               (MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) {
3517                 NL_SET_ERR_MSG_MOD(extack, "Rule must have at least one forward/drop action");
3518                 return false;
3519         }
3520
3521         if (!(~actions &
3522               (MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) {
3523                 NL_SET_ERR_MSG_MOD(extack, "Rule cannot support forward+drop action");
3524                 return false;
3525         }
3526
3527         if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR &&
3528             actions & MLX5_FLOW_CONTEXT_ACTION_DROP) {
3529                 NL_SET_ERR_MSG_MOD(extack, "Drop with modify header action is not supported");
3530                 return false;
3531         }
3532
3533         if (!(~actions &
3534               (MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) {
3535                 NL_SET_ERR_MSG_MOD(extack, "Rule cannot support forward+drop action");
3536                 return false;
3537         }
3538
3539         if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR &&
3540             actions & MLX5_FLOW_CONTEXT_ACTION_DROP) {
3541                 NL_SET_ERR_MSG_MOD(extack, "Drop with modify header action is not supported");
3542                 return false;
3543         }
3544
3545         if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR &&
3546             !modify_header_match_supported(priv, &parse_attr->spec, flow_action,
3547                                            actions, ct_flow, ct_clear, extack))
3548                 return false;
3549
3550         if (mlx5e_is_eswitch_flow(flow) &&
3551             !actions_match_supported_fdb(priv, parse_attr, flow, extack))
3552                 return false;
3553
3554         return true;
3555 }
3556
3557 static bool same_port_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
3558 {
3559         return priv->mdev == peer_priv->mdev;
3560 }
3561
3562 bool mlx5e_same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
3563 {
3564         struct mlx5_core_dev *fmdev, *pmdev;
3565         u64 fsystem_guid, psystem_guid;
3566
3567         fmdev = priv->mdev;
3568         pmdev = peer_priv->mdev;
3569
3570         fsystem_guid = mlx5_query_nic_system_image_guid(fmdev);
3571         psystem_guid = mlx5_query_nic_system_image_guid(pmdev);
3572
3573         return (fsystem_guid == psystem_guid);
3574 }
3575
3576 static int
3577 actions_prepare_mod_hdr_actions(struct mlx5e_priv *priv,
3578                                 struct mlx5e_tc_flow *flow,
3579                                 struct mlx5_flow_attr *attr,
3580                                 struct netlink_ext_ack *extack)
3581 {
3582         struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr;
3583         struct pedit_headers_action *hdrs = parse_attr->hdrs;
3584         enum mlx5_flow_namespace_type ns_type;
3585         int err;
3586
3587         if (!hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits &&
3588             !hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits)
3589                 return 0;
3590
3591         ns_type = mlx5e_get_flow_namespace(flow);
3592
3593         err = alloc_tc_pedit_action(priv, ns_type, parse_attr, &attr->action, extack);
3594         if (err)
3595                 return err;
3596
3597         if (parse_attr->mod_hdr_acts.num_actions > 0)
3598                 return 0;
3599
3600         /* In case all pedit actions are skipped, remove the MOD_HDR flag. */
3601         attr->action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
3602         mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts);
3603
3604         if (ns_type != MLX5_FLOW_NAMESPACE_FDB)
3605                 return 0;
3606
3607         if (!((attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) ||
3608               (attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH)))
3609                 attr->esw_attr->split_count = 0;
3610
3611         return 0;
3612 }
3613
3614 static struct mlx5_flow_attr*
3615 mlx5e_clone_flow_attr_for_post_act(struct mlx5_flow_attr *attr,
3616                                    enum mlx5_flow_namespace_type ns_type)
3617 {
3618         struct mlx5e_tc_flow_parse_attr *parse_attr;
3619         u32 attr_sz = ns_to_attr_sz(ns_type);
3620         struct mlx5_flow_attr *attr2;
3621
3622         attr2 = mlx5_alloc_flow_attr(ns_type);
3623         parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
3624         if (!attr2 || !parse_attr) {
3625                 kvfree(parse_attr);
3626                 kfree(attr2);
3627                 return NULL;
3628         }
3629
3630         memcpy(attr2, attr, attr_sz);
3631         INIT_LIST_HEAD(&attr2->list);
3632         parse_attr->filter_dev = attr->parse_attr->filter_dev;
3633         attr2->action = 0;
3634         attr2->flags = 0;
3635         attr2->parse_attr = parse_attr;
3636         attr2->dest_chain = 0;
3637         attr2->dest_ft = NULL;
3638
3639         if (ns_type == MLX5_FLOW_NAMESPACE_FDB) {
3640                 attr2->esw_attr->out_count = 0;
3641                 attr2->esw_attr->split_count = 0;
3642         }
3643
3644         return attr2;
3645 }
3646
3647 static struct mlx5_core_dev *
3648 get_flow_counter_dev(struct mlx5e_tc_flow *flow)
3649 {
3650         return mlx5e_is_eswitch_flow(flow) ? flow->attr->esw_attr->counter_dev : flow->priv->mdev;
3651 }
3652
3653 struct mlx5_flow_attr *
3654 mlx5e_tc_get_encap_attr(struct mlx5e_tc_flow *flow)
3655 {
3656         struct mlx5_esw_flow_attr *esw_attr;
3657         struct mlx5_flow_attr *attr;
3658         int i;
3659
3660         list_for_each_entry(attr, &flow->attrs, list) {
3661                 esw_attr = attr->esw_attr;
3662                 for (i = 0; i < MLX5_MAX_FLOW_FWD_VPORTS; i++) {
3663                         if (esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP)
3664                                 return attr;
3665                 }
3666         }
3667
3668         return NULL;
3669 }
3670
3671 void
3672 mlx5e_tc_unoffload_flow_post_acts(struct mlx5e_tc_flow *flow)
3673 {
3674         struct mlx5e_post_act *post_act = get_post_action(flow->priv);
3675         struct mlx5_flow_attr *attr;
3676
3677         list_for_each_entry(attr, &flow->attrs, list) {
3678                 if (list_is_last(&attr->list, &flow->attrs))
3679                         break;
3680
3681                 mlx5e_tc_post_act_unoffload(post_act, attr->post_act_handle);
3682         }
3683 }
3684
3685 static void
3686 free_flow_post_acts(struct mlx5e_tc_flow *flow)
3687 {
3688         struct mlx5_core_dev *counter_dev = get_flow_counter_dev(flow);
3689         struct mlx5e_post_act *post_act = get_post_action(flow->priv);
3690         struct mlx5_flow_attr *attr, *tmp;
3691         bool vf_tun;
3692
3693         list_for_each_entry_safe(attr, tmp, &flow->attrs, list) {
3694                 if (list_is_last(&attr->list, &flow->attrs))
3695                         break;
3696
3697                 if (attr->post_act_handle)
3698                         mlx5e_tc_post_act_del(post_act, attr->post_act_handle);
3699
3700                 clean_encap_dests(flow->priv, flow, attr, &vf_tun);
3701
3702                 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
3703                         mlx5_fc_destroy(counter_dev, attr->counter);
3704
3705                 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
3706                         mlx5e_mod_hdr_dealloc(&attr->parse_attr->mod_hdr_acts);
3707                         if (attr->modify_hdr)
3708                                 mlx5_modify_header_dealloc(flow->priv->mdev, attr->modify_hdr);
3709                 }
3710
3711                 list_del(&attr->list);
3712                 kvfree(attr->parse_attr);
3713                 kfree(attr);
3714         }
3715 }
3716
3717 int
3718 mlx5e_tc_offload_flow_post_acts(struct mlx5e_tc_flow *flow)
3719 {
3720         struct mlx5e_post_act *post_act = get_post_action(flow->priv);
3721         struct mlx5_flow_attr *attr;
3722         int err = 0;
3723
3724         list_for_each_entry(attr, &flow->attrs, list) {
3725                 if (list_is_last(&attr->list, &flow->attrs))
3726                         break;
3727
3728                 err = mlx5e_tc_post_act_offload(post_act, attr->post_act_handle);
3729                 if (err)
3730                         break;
3731         }
3732
3733         return err;
3734 }
3735
3736 /* TC filter rule HW translation:
3737  *
3738  * +---------------------+
3739  * + ft prio (tc chain)  +
3740  * + original match      +
3741  * +---------------------+
3742  *           |
3743  *           | if multi table action
3744  *           |
3745  *           v
3746  * +---------------------+
3747  * + post act ft         |<----.
3748  * + match fte id        |     | split on multi table action
3749  * + do actions          |-----'
3750  * +---------------------+
3751  *           |
3752  *           |
3753  *           v
3754  * Do rest of the actions after last multi table action.
3755  */
3756 static int
3757 alloc_flow_post_acts(struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack)
3758 {
3759         struct mlx5e_post_act *post_act = get_post_action(flow->priv);
3760         struct mlx5_flow_attr *attr, *next_attr = NULL;
3761         struct mlx5e_post_act_handle *handle;
3762         bool vf_tun, encap_valid = true;
3763         int err;
3764
3765         /* This is going in reverse order as needed.
3766          * The first entry is the last attribute.
3767          */
3768         list_for_each_entry(attr, &flow->attrs, list) {
3769                 if (!next_attr) {
3770                         /* Set counter action on last post act rule. */
3771                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
3772                 } else {
3773                         err = mlx5e_tc_act_set_next_post_act(flow, attr, next_attr);
3774                         if (err)
3775                                 goto out_free;
3776                 }
3777
3778                 /* Don't add post_act rule for first attr (last in the list).
3779                  * It's being handled by the caller.
3780                  */
3781                 if (list_is_last(&attr->list, &flow->attrs))
3782                         break;
3783
3784                 err = set_encap_dests(flow->priv, flow, attr, extack, &encap_valid, &vf_tun);
3785                 if (err)
3786                         goto out_free;
3787
3788                 if (!encap_valid)
3789                         flow_flag_set(flow, SLOW);
3790
3791                 err = actions_prepare_mod_hdr_actions(flow->priv, flow, attr, extack);
3792                 if (err)
3793                         goto out_free;
3794
3795                 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
3796                         err = mlx5e_tc_add_flow_mod_hdr(flow->priv, flow, attr);
3797                         if (err)
3798                                 goto out_free;
3799                 }
3800
3801                 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
3802                         err = alloc_flow_attr_counter(get_flow_counter_dev(flow), attr);
3803                         if (err)
3804                                 goto out_free;
3805                 }
3806
3807                 handle = mlx5e_tc_post_act_add(post_act, attr);
3808                 if (IS_ERR(handle)) {
3809                         err = PTR_ERR(handle);
3810                         goto out_free;
3811                 }
3812
3813                 attr->post_act_handle = handle;
3814                 next_attr = attr;
3815         }
3816
3817         if (flow_flag_test(flow, SLOW))
3818                 goto out;
3819
3820         err = mlx5e_tc_offload_flow_post_acts(flow);
3821         if (err)
3822                 goto out_free;
3823
3824 out:
3825         return 0;
3826
3827 out_free:
3828         free_flow_post_acts(flow);
3829         return err;
3830 }
3831
3832 static int
3833 parse_tc_actions(struct mlx5e_tc_act_parse_state *parse_state,
3834                  struct flow_action *flow_action)
3835 {
3836         struct netlink_ext_ack *extack = parse_state->extack;
3837         struct mlx5e_tc_flow_action flow_action_reorder;
3838         struct mlx5e_tc_flow *flow = parse_state->flow;
3839         struct mlx5_flow_attr *attr = flow->attr;
3840         enum mlx5_flow_namespace_type ns_type;
3841         struct mlx5e_priv *priv = flow->priv;
3842         struct flow_action_entry *act, **_act;
3843         struct mlx5e_tc_act *tc_act;
3844         int err, i;
3845
3846         flow_action_reorder.num_entries = flow_action->num_entries;
3847         flow_action_reorder.entries = kcalloc(flow_action->num_entries,
3848                                               sizeof(flow_action), GFP_KERNEL);
3849         if (!flow_action_reorder.entries)
3850                 return -ENOMEM;
3851
3852         mlx5e_tc_act_reorder_flow_actions(flow_action, &flow_action_reorder);
3853
3854         ns_type = mlx5e_get_flow_namespace(flow);
3855         list_add(&attr->list, &flow->attrs);
3856
3857         flow_action_for_each(i, _act, &flow_action_reorder) {
3858                 act = *_act;
3859                 tc_act = mlx5e_tc_act_get(act->id, ns_type);
3860                 if (!tc_act) {
3861                         NL_SET_ERR_MSG_MOD(extack, "Not implemented offload action");
3862                         err = -EOPNOTSUPP;
3863                         goto out_free;
3864                 }
3865
3866                 if (!tc_act->can_offload(parse_state, act, i, attr)) {
3867                         err = -EOPNOTSUPP;
3868                         goto out_free;
3869                 }
3870
3871                 err = tc_act->parse_action(parse_state, act, priv, attr);
3872                 if (err)
3873                         goto out_free;
3874
3875                 parse_state->actions |= attr->action;
3876
3877                 /* Split attr for multi table act if not the last act. */
3878                 if (tc_act->is_multi_table_act &&
3879                     tc_act->is_multi_table_act(priv, act, attr) &&
3880                     i < flow_action_reorder.num_entries - 1) {
3881                         err = mlx5e_tc_act_post_parse(parse_state, flow_action, attr, ns_type);
3882                         if (err)
3883                                 goto out_free;
3884
3885                         attr = mlx5e_clone_flow_attr_for_post_act(flow->attr, ns_type);
3886                         if (!attr) {
3887                                 err = -ENOMEM;
3888                                 goto out_free;
3889                         }
3890
3891                         list_add(&attr->list, &flow->attrs);
3892                 }
3893         }
3894
3895         kfree(flow_action_reorder.entries);
3896
3897         err = mlx5e_tc_act_post_parse(parse_state, flow_action, attr, ns_type);
3898         if (err)
3899                 goto out_free_post_acts;
3900
3901         err = alloc_flow_post_acts(flow, extack);
3902         if (err)
3903                 goto out_free_post_acts;
3904
3905         return 0;
3906
3907 out_free:
3908         kfree(flow_action_reorder.entries);
3909 out_free_post_acts:
3910         free_flow_post_acts(flow);
3911
3912         return err;
3913 }
3914
3915 static int
3916 flow_action_supported(struct flow_action *flow_action,
3917                       struct netlink_ext_ack *extack)
3918 {
3919         if (!flow_action_has_entries(flow_action)) {
3920                 NL_SET_ERR_MSG_MOD(extack, "Flow action doesn't have any entries");
3921                 return -EINVAL;
3922         }
3923
3924         if (!flow_action_hw_stats_check(flow_action, extack,
3925                                         FLOW_ACTION_HW_STATS_DELAYED_BIT)) {
3926                 NL_SET_ERR_MSG_MOD(extack, "Flow action HW stats type is not supported");
3927                 return -EOPNOTSUPP;
3928         }
3929
3930         return 0;
3931 }
3932
3933 static int
3934 parse_tc_nic_actions(struct mlx5e_priv *priv,
3935                      struct flow_action *flow_action,
3936                      struct mlx5e_tc_flow *flow,
3937                      struct netlink_ext_ack *extack)
3938 {
3939         struct mlx5e_tc_act_parse_state *parse_state;
3940         struct mlx5e_tc_flow_parse_attr *parse_attr;
3941         struct mlx5_flow_attr *attr = flow->attr;
3942         int err;
3943
3944         err = flow_action_supported(flow_action, extack);
3945         if (err)
3946                 return err;
3947
3948         attr->nic_attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
3949         parse_attr = attr->parse_attr;
3950         parse_state = &parse_attr->parse_state;
3951         mlx5e_tc_act_init_parse_state(parse_state, flow, flow_action, extack);
3952         parse_state->ct_priv = get_ct_priv(priv);
3953
3954         err = parse_tc_actions(parse_state, flow_action);
3955         if (err)
3956                 return err;
3957
3958         err = actions_prepare_mod_hdr_actions(priv, flow, attr, extack);
3959         if (err)
3960                 return err;
3961
3962         if (!actions_match_supported(priv, flow_action, parse_state->actions,
3963                                      parse_attr, flow, extack))
3964                 return -EOPNOTSUPP;
3965
3966         return 0;
3967 }
3968
3969 static bool is_merged_eswitch_vfs(struct mlx5e_priv *priv,
3970                                   struct net_device *peer_netdev)
3971 {
3972         struct mlx5e_priv *peer_priv;
3973
3974         peer_priv = netdev_priv(peer_netdev);
3975
3976         return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) &&
3977                 mlx5e_eswitch_vf_rep(priv->netdev) &&
3978                 mlx5e_eswitch_vf_rep(peer_netdev) &&
3979                 mlx5e_same_hw_devs(priv, peer_priv));
3980 }
3981
3982 static bool same_hw_reps(struct mlx5e_priv *priv,
3983                          struct net_device *peer_netdev)
3984 {
3985         struct mlx5e_priv *peer_priv;
3986
3987         peer_priv = netdev_priv(peer_netdev);
3988
3989         return mlx5e_eswitch_rep(priv->netdev) &&
3990                mlx5e_eswitch_rep(peer_netdev) &&
3991                mlx5e_same_hw_devs(priv, peer_priv);
3992 }
3993
3994 static bool is_lag_dev(struct mlx5e_priv *priv,
3995                        struct net_device *peer_netdev)
3996 {
3997         return ((mlx5_lag_is_sriov(priv->mdev) ||
3998                  mlx5_lag_is_multipath(priv->mdev)) &&
3999                  same_hw_reps(priv, peer_netdev));
4000 }
4001
4002 static bool is_multiport_eligible(struct mlx5e_priv *priv, struct net_device *out_dev)
4003 {
4004         if (same_hw_reps(priv, out_dev) &&
4005             MLX5_CAP_PORT_SELECTION(priv->mdev, port_select_flow_table) &&
4006             MLX5_CAP_GEN(priv->mdev, create_lag_when_not_master_up))
4007                 return true;
4008
4009         return false;
4010 }
4011
4012 bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv,
4013                                     struct net_device *out_dev)
4014 {
4015         if (is_merged_eswitch_vfs(priv, out_dev))
4016                 return true;
4017
4018         if (is_multiport_eligible(priv, out_dev))
4019                 return true;
4020
4021         if (is_lag_dev(priv, out_dev))
4022                 return true;
4023
4024         return mlx5e_eswitch_rep(out_dev) &&
4025                same_port_devs(priv, netdev_priv(out_dev));
4026 }
4027
4028 int mlx5e_set_fwd_to_int_port_actions(struct mlx5e_priv *priv,
4029                                       struct mlx5_flow_attr *attr,
4030                                       int ifindex,
4031                                       enum mlx5e_tc_int_port_type type,
4032                                       u32 *action,
4033                                       int out_index)
4034 {
4035         struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
4036         struct mlx5e_tc_int_port_priv *int_port_priv;
4037         struct mlx5e_tc_flow_parse_attr *parse_attr;
4038         struct mlx5e_tc_int_port *dest_int_port;
4039         int err;
4040
4041         parse_attr = attr->parse_attr;
4042         int_port_priv = mlx5e_get_int_port_priv(priv);
4043
4044         dest_int_port = mlx5e_tc_int_port_get(int_port_priv, ifindex, type);
4045         if (IS_ERR(dest_int_port))
4046                 return PTR_ERR(dest_int_port);
4047
4048         err = mlx5e_tc_match_to_reg_set(priv->mdev, &parse_attr->mod_hdr_acts,
4049                                         MLX5_FLOW_NAMESPACE_FDB, VPORT_TO_REG,
4050                                         mlx5e_tc_int_port_get_metadata(dest_int_port));
4051         if (err) {
4052                 mlx5e_tc_int_port_put(int_port_priv, dest_int_port);
4053                 return err;
4054         }
4055
4056         *action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
4057
4058         esw_attr->dest_int_port = dest_int_port;
4059         esw_attr->dests[out_index].flags |= MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE;
4060
4061         /* Forward to root fdb for matching against the new source vport */
4062         attr->dest_chain = 0;
4063
4064         return 0;
4065 }
4066
4067 static int
4068 parse_tc_fdb_actions(struct mlx5e_priv *priv,
4069                      struct flow_action *flow_action,
4070                      struct mlx5e_tc_flow *flow,
4071                      struct netlink_ext_ack *extack)
4072 {
4073         struct mlx5e_tc_act_parse_state *parse_state;
4074         struct mlx5e_tc_flow_parse_attr *parse_attr;
4075         struct mlx5_flow_attr *attr = flow->attr;
4076         struct mlx5_esw_flow_attr *esw_attr;
4077         struct net_device *filter_dev;
4078         int err;
4079
4080         err = flow_action_supported(flow_action, extack);
4081         if (err)
4082                 return err;
4083
4084         esw_attr = attr->esw_attr;
4085         parse_attr = attr->parse_attr;
4086         filter_dev = parse_attr->filter_dev;
4087         parse_state = &parse_attr->parse_state;
4088         mlx5e_tc_act_init_parse_state(parse_state, flow, flow_action, extack);
4089         parse_state->ct_priv = get_ct_priv(priv);
4090
4091         err = parse_tc_actions(parse_state, flow_action);
4092         if (err)
4093                 return err;
4094
4095         /* Forward to/from internal port can only have 1 dest */
4096         if ((netif_is_ovs_master(filter_dev) || esw_attr->dest_int_port) &&
4097             esw_attr->out_count > 1) {
4098                 NL_SET_ERR_MSG_MOD(extack,
4099                                    "Rules with internal port can have only one destination");
4100                 return -EOPNOTSUPP;
4101         }
4102
4103         /* Forward from tunnel/internal port to internal port is not supported */
4104         if ((mlx5e_get_tc_tun(filter_dev) || netif_is_ovs_master(filter_dev)) &&
4105             esw_attr->dest_int_port) {
4106                 NL_SET_ERR_MSG_MOD(extack,
4107                                    "Forwarding from tunnel/internal port to internal port is not supported");
4108                 return -EOPNOTSUPP;
4109         }
4110
4111         err = actions_prepare_mod_hdr_actions(priv, flow, attr, extack);
4112         if (err)
4113                 return err;
4114
4115         if (!actions_match_supported(priv, flow_action, parse_state->actions,
4116                                      parse_attr, flow, extack))
4117                 return -EOPNOTSUPP;
4118
4119         return 0;
4120 }
4121
4122 static void get_flags(int flags, unsigned long *flow_flags)
4123 {
4124         unsigned long __flow_flags = 0;
4125
4126         if (flags & MLX5_TC_FLAG(INGRESS))
4127                 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_INGRESS);
4128         if (flags & MLX5_TC_FLAG(EGRESS))
4129                 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_EGRESS);
4130
4131         if (flags & MLX5_TC_FLAG(ESW_OFFLOAD))
4132                 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH);
4133         if (flags & MLX5_TC_FLAG(NIC_OFFLOAD))
4134                 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
4135         if (flags & MLX5_TC_FLAG(FT_OFFLOAD))
4136                 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_FT);
4137
4138         *flow_flags = __flow_flags;
4139 }
4140
4141 static const struct rhashtable_params tc_ht_params = {
4142         .head_offset = offsetof(struct mlx5e_tc_flow, node),
4143         .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
4144         .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
4145         .automatic_shrinking = true,
4146 };
4147
4148 static struct rhashtable *get_tc_ht(struct mlx5e_priv *priv,
4149                                     unsigned long flags)
4150 {
4151         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
4152         struct mlx5e_rep_priv *rpriv;
4153
4154         if (flags & MLX5_TC_FLAG(ESW_OFFLOAD)) {
4155                 rpriv = priv->ppriv;
4156                 return &rpriv->tc_ht;
4157         } else /* NIC offload */
4158                 return &tc->ht;
4159 }
4160
4161 static bool is_peer_flow_needed(struct mlx5e_tc_flow *flow)
4162 {
4163         struct mlx5_esw_flow_attr *esw_attr = flow->attr->esw_attr;
4164         struct mlx5_flow_attr *attr = flow->attr;
4165         bool is_rep_ingress = esw_attr->in_rep->vport != MLX5_VPORT_UPLINK &&
4166                 flow_flag_test(flow, INGRESS);
4167         bool act_is_encap = !!(attr->action &
4168                                MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT);
4169         bool esw_paired = mlx5_devcom_is_paired(esw_attr->in_mdev->priv.devcom,
4170                                                 MLX5_DEVCOM_ESW_OFFLOADS);
4171
4172         if (!esw_paired)
4173                 return false;
4174
4175         if ((mlx5_lag_is_sriov(esw_attr->in_mdev) ||
4176              mlx5_lag_is_multipath(esw_attr->in_mdev)) &&
4177             (is_rep_ingress || act_is_encap))
4178                 return true;
4179
4180         return false;
4181 }
4182
4183 struct mlx5_flow_attr *
4184 mlx5_alloc_flow_attr(enum mlx5_flow_namespace_type type)
4185 {
4186         u32 ex_attr_size = (type == MLX5_FLOW_NAMESPACE_FDB)  ?
4187                                 sizeof(struct mlx5_esw_flow_attr) :
4188                                 sizeof(struct mlx5_nic_flow_attr);
4189         struct mlx5_flow_attr *attr;
4190
4191         attr = kzalloc(sizeof(*attr) + ex_attr_size, GFP_KERNEL);
4192         if (!attr)
4193                 return attr;
4194
4195         INIT_LIST_HEAD(&attr->list);
4196         return attr;
4197 }
4198
4199 static int
4200 mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size,
4201                  struct flow_cls_offload *f, unsigned long flow_flags,
4202                  struct mlx5e_tc_flow_parse_attr **__parse_attr,
4203                  struct mlx5e_tc_flow **__flow)
4204 {
4205         struct mlx5e_tc_flow_parse_attr *parse_attr;
4206         struct mlx5_flow_attr *attr;
4207         struct mlx5e_tc_flow *flow;
4208         int err = -ENOMEM;
4209         int out_index;
4210
4211         flow = kzalloc(sizeof(*flow), GFP_KERNEL);
4212         parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
4213         if (!parse_attr || !flow)
4214                 goto err_free;
4215
4216         flow->flags = flow_flags;
4217         flow->cookie = f->cookie;
4218         flow->priv = priv;
4219
4220         attr = mlx5_alloc_flow_attr(mlx5e_get_flow_namespace(flow));
4221         if (!attr)
4222                 goto err_free;
4223
4224         flow->attr = attr;
4225
4226         for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
4227                 INIT_LIST_HEAD(&flow->encaps[out_index].list);
4228         INIT_LIST_HEAD(&flow->hairpin);
4229         INIT_LIST_HEAD(&flow->l3_to_l2_reformat);
4230         INIT_LIST_HEAD(&flow->attrs);
4231         refcount_set(&flow->refcnt, 1);
4232         init_completion(&flow->init_done);
4233         init_completion(&flow->del_hw_done);
4234
4235         *__flow = flow;
4236         *__parse_attr = parse_attr;
4237
4238         return 0;
4239
4240 err_free:
4241         kfree(flow);
4242         kvfree(parse_attr);
4243         return err;
4244 }
4245
4246 static void
4247 mlx5e_flow_attr_init(struct mlx5_flow_attr *attr,
4248                      struct mlx5e_tc_flow_parse_attr *parse_attr,
4249                      struct flow_cls_offload *f)
4250 {
4251         attr->parse_attr = parse_attr;
4252         attr->chain = f->common.chain_index;
4253         attr->prio = f->common.prio;
4254 }
4255
4256 static void
4257 mlx5e_flow_esw_attr_init(struct mlx5_flow_attr *attr,
4258                          struct mlx5e_priv *priv,
4259                          struct mlx5e_tc_flow_parse_attr *parse_attr,
4260                          struct flow_cls_offload *f,
4261                          struct mlx5_eswitch_rep *in_rep,
4262                          struct mlx5_core_dev *in_mdev)
4263 {
4264         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
4265         struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
4266
4267         mlx5e_flow_attr_init(attr, parse_attr, f);
4268
4269         esw_attr->in_rep = in_rep;
4270         esw_attr->in_mdev = in_mdev;
4271
4272         if (MLX5_CAP_ESW(esw->dev, counter_eswitch_affinity) ==
4273             MLX5_COUNTER_SOURCE_ESWITCH)
4274                 esw_attr->counter_dev = in_mdev;
4275         else
4276                 esw_attr->counter_dev = priv->mdev;
4277 }
4278
4279 static struct mlx5e_tc_flow *
4280 __mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
4281                      struct flow_cls_offload *f,
4282                      unsigned long flow_flags,
4283                      struct net_device *filter_dev,
4284                      struct mlx5_eswitch_rep *in_rep,
4285                      struct mlx5_core_dev *in_mdev)
4286 {
4287         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
4288         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
4289         struct netlink_ext_ack *extack = f->common.extack;
4290         struct mlx5e_tc_flow_parse_attr *parse_attr;
4291         struct mlx5e_tc_flow *flow;
4292         int attr_size, err;
4293
4294         flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH);
4295         attr_size  = sizeof(struct mlx5_esw_flow_attr);
4296         err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
4297                                &parse_attr, &flow);
4298         if (err)
4299                 goto out;
4300
4301         parse_attr->filter_dev = filter_dev;
4302         mlx5e_flow_esw_attr_init(flow->attr,
4303                                  priv, parse_attr,
4304                                  f, in_rep, in_mdev);
4305
4306         err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
4307                                f, filter_dev);
4308         if (err)
4309                 goto err_free;
4310
4311         /* actions validation depends on parsing the ct matches first */
4312         err = mlx5_tc_ct_match_add(get_ct_priv(priv), &parse_attr->spec, f,
4313                                    &flow->attr->ct_attr, extack);
4314         if (err)
4315                 goto err_free;
4316
4317         /* always set IP version for indirect table handling */
4318         flow->attr->ip_version = mlx5e_tc_get_ip_version(&parse_attr->spec, true);
4319
4320         err = parse_tc_fdb_actions(priv, &rule->action, flow, extack);
4321         if (err)
4322                 goto err_free;
4323
4324         if (flow->attr->lag.count) {
4325                 err = mlx5_lag_add_mpesw_rule(esw->dev);
4326                 if (err)
4327                         goto err_free;
4328         }
4329
4330         err = mlx5e_tc_add_fdb_flow(priv, flow, extack);
4331         complete_all(&flow->init_done);
4332         if (err) {
4333                 if (!(err == -ENETUNREACH && mlx5_lag_is_multipath(in_mdev)))
4334                         goto err_lag;
4335
4336                 add_unready_flow(flow);
4337         }
4338
4339         return flow;
4340
4341 err_lag:
4342         if (flow->attr->lag.count)
4343                 mlx5_lag_del_mpesw_rule(esw->dev);
4344 err_free:
4345         mlx5e_flow_put(priv, flow);
4346 out:
4347         return ERR_PTR(err);
4348 }
4349
4350 static int mlx5e_tc_add_fdb_peer_flow(struct flow_cls_offload *f,
4351                                       struct mlx5e_tc_flow *flow,
4352                                       unsigned long flow_flags)
4353 {
4354         struct mlx5e_priv *priv = flow->priv, *peer_priv;
4355         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch, *peer_esw;
4356         struct mlx5_esw_flow_attr *attr = flow->attr->esw_attr;
4357         struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
4358         struct mlx5e_tc_flow_parse_attr *parse_attr;
4359         struct mlx5e_rep_priv *peer_urpriv;
4360         struct mlx5e_tc_flow *peer_flow;
4361         struct mlx5_core_dev *in_mdev;
4362         int err = 0;
4363
4364         peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
4365         if (!peer_esw)
4366                 return -ENODEV;
4367
4368         peer_urpriv = mlx5_eswitch_get_uplink_priv(peer_esw, REP_ETH);
4369         peer_priv = netdev_priv(peer_urpriv->netdev);
4370
4371         /* in_mdev is assigned of which the packet originated from.
4372          * So packets redirected to uplink use the same mdev of the
4373          * original flow and packets redirected from uplink use the
4374          * peer mdev.
4375          */
4376         if (attr->in_rep->vport == MLX5_VPORT_UPLINK)
4377                 in_mdev = peer_priv->mdev;
4378         else
4379                 in_mdev = priv->mdev;
4380
4381         parse_attr = flow->attr->parse_attr;
4382         peer_flow = __mlx5e_add_fdb_flow(peer_priv, f, flow_flags,
4383                                          parse_attr->filter_dev,
4384                                          attr->in_rep, in_mdev);
4385         if (IS_ERR(peer_flow)) {
4386                 err = PTR_ERR(peer_flow);
4387                 goto out;
4388         }
4389
4390         flow->peer_flow = peer_flow;
4391         flow_flag_set(flow, DUP);
4392         mutex_lock(&esw->offloads.peer_mutex);
4393         list_add_tail(&flow->peer, &esw->offloads.peer_flows);
4394         mutex_unlock(&esw->offloads.peer_mutex);
4395
4396 out:
4397         mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
4398         return err;
4399 }
4400
4401 static int
4402 mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
4403                    struct flow_cls_offload *f,
4404                    unsigned long flow_flags,
4405                    struct net_device *filter_dev,
4406                    struct mlx5e_tc_flow **__flow)
4407 {
4408         struct mlx5e_rep_priv *rpriv = priv->ppriv;
4409         struct mlx5_eswitch_rep *in_rep = rpriv->rep;
4410         struct mlx5_core_dev *in_mdev = priv->mdev;
4411         struct mlx5e_tc_flow *flow;
4412         int err;
4413
4414         flow = __mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, in_rep,
4415                                     in_mdev);
4416         if (IS_ERR(flow))
4417                 return PTR_ERR(flow);
4418
4419         if (is_peer_flow_needed(flow)) {
4420                 err = mlx5e_tc_add_fdb_peer_flow(f, flow, flow_flags);
4421                 if (err) {
4422                         mlx5e_tc_del_fdb_flow(priv, flow);
4423                         goto out;
4424                 }
4425         }
4426
4427         *__flow = flow;
4428
4429         return 0;
4430
4431 out:
4432         return err;
4433 }
4434
4435 static int
4436 mlx5e_add_nic_flow(struct mlx5e_priv *priv,
4437                    struct flow_cls_offload *f,
4438                    unsigned long flow_flags,
4439                    struct net_device *filter_dev,
4440                    struct mlx5e_tc_flow **__flow)
4441 {
4442         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
4443         struct netlink_ext_ack *extack = f->common.extack;
4444         struct mlx5e_tc_flow_parse_attr *parse_attr;
4445         struct mlx5e_tc_flow *flow;
4446         int attr_size, err;
4447
4448         if (!MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level)) {
4449                 if (!tc_cls_can_offload_and_chain0(priv->netdev, &f->common))
4450                         return -EOPNOTSUPP;
4451         } else if (!tc_can_offload_extack(priv->netdev, f->common.extack)) {
4452                 return -EOPNOTSUPP;
4453         }
4454
4455         flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
4456         attr_size  = sizeof(struct mlx5_nic_flow_attr);
4457         err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
4458                                &parse_attr, &flow);
4459         if (err)
4460                 goto out;
4461
4462         parse_attr->filter_dev = filter_dev;
4463         mlx5e_flow_attr_init(flow->attr, parse_attr, f);
4464
4465         err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
4466                                f, filter_dev);
4467         if (err)
4468                 goto err_free;
4469
4470         err = mlx5_tc_ct_match_add(get_ct_priv(priv), &parse_attr->spec, f,
4471                                    &flow->attr->ct_attr, extack);
4472         if (err)
4473                 goto err_free;
4474
4475         err = parse_tc_nic_actions(priv, &rule->action, flow, extack);
4476         if (err)
4477                 goto err_free;
4478
4479         err = mlx5e_tc_add_nic_flow(priv, flow, extack);
4480         if (err)
4481                 goto err_free;
4482
4483         flow_flag_set(flow, OFFLOADED);
4484         *__flow = flow;
4485
4486         return 0;
4487
4488 err_free:
4489         flow_flag_set(flow, FAILED);
4490         mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts);
4491         mlx5e_flow_put(priv, flow);
4492 out:
4493         return err;
4494 }
4495
4496 static int
4497 mlx5e_tc_add_flow(struct mlx5e_priv *priv,
4498                   struct flow_cls_offload *f,
4499                   unsigned long flags,
4500                   struct net_device *filter_dev,
4501                   struct mlx5e_tc_flow **flow)
4502 {
4503         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
4504         unsigned long flow_flags;
4505         int err;
4506
4507         get_flags(flags, &flow_flags);
4508
4509         if (!tc_can_offload_extack(priv->netdev, f->common.extack))
4510                 return -EOPNOTSUPP;
4511
4512         if (esw && esw->mode == MLX5_ESWITCH_OFFLOADS)
4513                 err = mlx5e_add_fdb_flow(priv, f, flow_flags,
4514                                          filter_dev, flow);
4515         else
4516                 err = mlx5e_add_nic_flow(priv, f, flow_flags,
4517                                          filter_dev, flow);
4518
4519         return err;
4520 }
4521
4522 static bool is_flow_rule_duplicate_allowed(struct net_device *dev,
4523                                            struct mlx5e_rep_priv *rpriv)
4524 {
4525         /* Offloaded flow rule is allowed to duplicate on non-uplink representor
4526          * sharing tc block with other slaves of a lag device. Rpriv can be NULL if this
4527          * function is called from NIC mode.
4528          */
4529         return netif_is_lag_port(dev) && rpriv && rpriv->rep->vport != MLX5_VPORT_UPLINK;
4530 }
4531
4532 int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv,
4533                            struct flow_cls_offload *f, unsigned long flags)
4534 {
4535         struct netlink_ext_ack *extack = f->common.extack;
4536         struct rhashtable *tc_ht = get_tc_ht(priv, flags);
4537         struct mlx5e_rep_priv *rpriv = priv->ppriv;
4538         struct mlx5e_tc_flow *flow;
4539         int err = 0;
4540
4541         if (!mlx5_esw_hold(priv->mdev))
4542                 return -EBUSY;
4543
4544         mlx5_esw_get(priv->mdev);
4545
4546         rcu_read_lock();
4547         flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
4548         if (flow) {
4549                 /* Same flow rule offloaded to non-uplink representor sharing tc block,
4550                  * just return 0.
4551                  */
4552                 if (is_flow_rule_duplicate_allowed(dev, rpriv) && flow->orig_dev != dev)
4553                         goto rcu_unlock;
4554
4555                 NL_SET_ERR_MSG_MOD(extack,
4556                                    "flow cookie already exists, ignoring");
4557                 netdev_warn_once(priv->netdev,
4558                                  "flow cookie %lx already exists, ignoring\n",
4559                                  f->cookie);
4560                 err = -EEXIST;
4561                 goto rcu_unlock;
4562         }
4563 rcu_unlock:
4564         rcu_read_unlock();
4565         if (flow)
4566                 goto out;
4567
4568         trace_mlx5e_configure_flower(f);
4569         err = mlx5e_tc_add_flow(priv, f, flags, dev, &flow);
4570         if (err)
4571                 goto out;
4572
4573         /* Flow rule offloaded to non-uplink representor sharing tc block,
4574          * set the flow's owner dev.
4575          */
4576         if (is_flow_rule_duplicate_allowed(dev, rpriv))
4577                 flow->orig_dev = dev;
4578
4579         err = rhashtable_lookup_insert_fast(tc_ht, &flow->node, tc_ht_params);
4580         if (err)
4581                 goto err_free;
4582
4583         mlx5_esw_release(priv->mdev);
4584         return 0;
4585
4586 err_free:
4587         mlx5e_flow_put(priv, flow);
4588 out:
4589         mlx5_esw_put(priv->mdev);
4590         mlx5_esw_release(priv->mdev);
4591         return err;
4592 }
4593
4594 static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags)
4595 {
4596         bool dir_ingress = !!(flags & MLX5_TC_FLAG(INGRESS));
4597         bool dir_egress = !!(flags & MLX5_TC_FLAG(EGRESS));
4598
4599         return flow_flag_test(flow, INGRESS) == dir_ingress &&
4600                 flow_flag_test(flow, EGRESS) == dir_egress;
4601 }
4602
4603 int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv,
4604                         struct flow_cls_offload *f, unsigned long flags)
4605 {
4606         struct rhashtable *tc_ht = get_tc_ht(priv, flags);
4607         struct mlx5e_tc_flow *flow;
4608         int err;
4609
4610         rcu_read_lock();
4611         flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
4612         if (!flow || !same_flow_direction(flow, flags)) {
4613                 err = -EINVAL;
4614                 goto errout;
4615         }
4616
4617         /* Only delete the flow if it doesn't have MLX5E_TC_FLOW_DELETED flag
4618          * set.
4619          */
4620         if (flow_flag_test_and_set(flow, DELETED)) {
4621                 err = -EINVAL;
4622                 goto errout;
4623         }
4624         rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params);
4625         rcu_read_unlock();
4626
4627         trace_mlx5e_delete_flower(f);
4628         mlx5e_flow_put(priv, flow);
4629
4630         mlx5_esw_put(priv->mdev);
4631         return 0;
4632
4633 errout:
4634         rcu_read_unlock();
4635         return err;
4636 }
4637
4638 int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv,
4639                        struct flow_cls_offload *f, unsigned long flags)
4640 {
4641         struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
4642         struct rhashtable *tc_ht = get_tc_ht(priv, flags);
4643         struct mlx5_eswitch *peer_esw;
4644         struct mlx5e_tc_flow *flow;
4645         struct mlx5_fc *counter;
4646         u64 lastuse = 0;
4647         u64 packets = 0;
4648         u64 bytes = 0;
4649         int err = 0;
4650
4651         rcu_read_lock();
4652         flow = mlx5e_flow_get(rhashtable_lookup(tc_ht, &f->cookie,
4653                                                 tc_ht_params));
4654         rcu_read_unlock();
4655         if (IS_ERR(flow))
4656                 return PTR_ERR(flow);
4657
4658         if (!same_flow_direction(flow, flags)) {
4659                 err = -EINVAL;
4660                 goto errout;
4661         }
4662
4663         if (mlx5e_is_offloaded_flow(flow) || flow_flag_test(flow, CT)) {
4664                 counter = mlx5e_tc_get_counter(flow);
4665                 if (!counter)
4666                         goto errout;
4667
4668                 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
4669         }
4670
4671         /* Under multipath it's possible for one rule to be currently
4672          * un-offloaded while the other rule is offloaded.
4673          */
4674         peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
4675         if (!peer_esw)
4676                 goto out;
4677
4678         if (flow_flag_test(flow, DUP) &&
4679             flow_flag_test(flow->peer_flow, OFFLOADED)) {
4680                 u64 bytes2;
4681                 u64 packets2;
4682                 u64 lastuse2;
4683
4684                 counter = mlx5e_tc_get_counter(flow->peer_flow);
4685                 if (!counter)
4686                         goto no_peer_counter;
4687                 mlx5_fc_query_cached(counter, &bytes2, &packets2, &lastuse2);
4688
4689                 bytes += bytes2;
4690                 packets += packets2;
4691                 lastuse = max_t(u64, lastuse, lastuse2);
4692         }
4693
4694 no_peer_counter:
4695         mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
4696 out:
4697         flow_stats_update(&f->stats, bytes, packets, 0, lastuse,
4698                           FLOW_ACTION_HW_STATS_DELAYED);
4699         trace_mlx5e_stats_flower(f);
4700 errout:
4701         mlx5e_flow_put(priv, flow);
4702         return err;
4703 }
4704
4705 static int apply_police_params(struct mlx5e_priv *priv, u64 rate,
4706                                struct netlink_ext_ack *extack)
4707 {
4708         struct mlx5e_rep_priv *rpriv = priv->ppriv;
4709         struct mlx5_eswitch *esw;
4710         u32 rate_mbps = 0;
4711         u16 vport_num;
4712         int err;
4713
4714         vport_num = rpriv->rep->vport;
4715         if (vport_num >= MLX5_VPORT_ECPF) {
4716                 NL_SET_ERR_MSG_MOD(extack,
4717                                    "Ingress rate limit is supported only for Eswitch ports connected to VFs");
4718                 return -EOPNOTSUPP;
4719         }
4720
4721         esw = priv->mdev->priv.eswitch;
4722         /* rate is given in bytes/sec.
4723          * First convert to bits/sec and then round to the nearest mbit/secs.
4724          * mbit means million bits.
4725          * Moreover, if rate is non zero we choose to configure to a minimum of
4726          * 1 mbit/sec.
4727          */
4728         if (rate) {
4729                 rate = (rate * BITS_PER_BYTE) + 500000;
4730                 do_div(rate, 1000000);
4731                 rate_mbps = max_t(u32, rate, 1);
4732         }
4733
4734         err = mlx5_esw_qos_modify_vport_rate(esw, vport_num, rate_mbps);
4735         if (err)
4736                 NL_SET_ERR_MSG_MOD(extack, "failed applying action to hardware");
4737
4738         return err;
4739 }
4740
4741 int mlx5e_policer_validate(const struct flow_action *action,
4742                            const struct flow_action_entry *act,
4743                            struct netlink_ext_ack *extack)
4744 {
4745         if (act->police.exceed.act_id != FLOW_ACTION_DROP) {
4746                 NL_SET_ERR_MSG_MOD(extack,
4747                                    "Offload not supported when exceed action is not drop");
4748                 return -EOPNOTSUPP;
4749         }
4750
4751         if (act->police.notexceed.act_id == FLOW_ACTION_ACCEPT &&
4752             !flow_action_is_last_entry(action, act)) {
4753                 NL_SET_ERR_MSG_MOD(extack,
4754                                    "Offload not supported when conform action is ok, but action is not last");
4755                 return -EOPNOTSUPP;
4756         }
4757
4758         if (act->police.peakrate_bytes_ps ||
4759             act->police.avrate || act->police.overhead) {
4760                 NL_SET_ERR_MSG_MOD(extack,
4761                                    "Offload not supported when peakrate/avrate/overhead is configured");
4762                 return -EOPNOTSUPP;
4763         }
4764
4765         return 0;
4766 }
4767
4768 static int scan_tc_matchall_fdb_actions(struct mlx5e_priv *priv,
4769                                         struct flow_action *flow_action,
4770                                         struct netlink_ext_ack *extack)
4771 {
4772         struct mlx5e_rep_priv *rpriv = priv->ppriv;
4773         const struct flow_action_entry *act;
4774         int err;
4775         int i;
4776
4777         if (!flow_action_has_entries(flow_action)) {
4778                 NL_SET_ERR_MSG_MOD(extack, "matchall called with no action");
4779                 return -EINVAL;
4780         }
4781
4782         if (!flow_offload_has_one_action(flow_action)) {
4783                 NL_SET_ERR_MSG_MOD(extack, "matchall policing support only a single action");
4784                 return -EOPNOTSUPP;
4785         }
4786
4787         if (!flow_action_basic_hw_stats_check(flow_action, extack)) {
4788                 NL_SET_ERR_MSG_MOD(extack, "Flow action HW stats type is not supported");
4789                 return -EOPNOTSUPP;
4790         }
4791
4792         flow_action_for_each(i, act, flow_action) {
4793                 switch (act->id) {
4794                 case FLOW_ACTION_POLICE:
4795                         if (act->police.notexceed.act_id != FLOW_ACTION_CONTINUE) {
4796                                 NL_SET_ERR_MSG_MOD(extack,
4797                                                    "Offload not supported when conform action is not continue");
4798                                 return -EOPNOTSUPP;
4799                         }
4800
4801                         err = mlx5e_policer_validate(flow_action, act, extack);
4802                         if (err)
4803                                 return err;
4804
4805                         err = apply_police_params(priv, act->police.rate_bytes_ps, extack);
4806                         if (err)
4807                                 return err;
4808
4809                         rpriv->prev_vf_vport_stats = priv->stats.vf_vport;
4810                         break;
4811                 default:
4812                         NL_SET_ERR_MSG_MOD(extack, "mlx5 supports only police action for matchall");
4813                         return -EOPNOTSUPP;
4814                 }
4815         }
4816
4817         return 0;
4818 }
4819
4820 int mlx5e_tc_configure_matchall(struct mlx5e_priv *priv,
4821                                 struct tc_cls_matchall_offload *ma)
4822 {
4823         struct netlink_ext_ack *extack = ma->common.extack;
4824
4825         if (ma->common.prio != 1) {
4826                 NL_SET_ERR_MSG_MOD(extack, "only priority 1 is supported");
4827                 return -EINVAL;
4828         }
4829
4830         return scan_tc_matchall_fdb_actions(priv, &ma->rule->action, extack);
4831 }
4832
4833 int mlx5e_tc_delete_matchall(struct mlx5e_priv *priv,
4834                              struct tc_cls_matchall_offload *ma)
4835 {
4836         struct netlink_ext_ack *extack = ma->common.extack;
4837
4838         return apply_police_params(priv, 0, extack);
4839 }
4840
4841 void mlx5e_tc_stats_matchall(struct mlx5e_priv *priv,
4842                              struct tc_cls_matchall_offload *ma)
4843 {
4844         struct mlx5e_rep_priv *rpriv = priv->ppriv;
4845         struct rtnl_link_stats64 cur_stats;
4846         u64 dbytes;
4847         u64 dpkts;
4848
4849         cur_stats = priv->stats.vf_vport;
4850         dpkts = cur_stats.rx_packets - rpriv->prev_vf_vport_stats.rx_packets;
4851         dbytes = cur_stats.rx_bytes - rpriv->prev_vf_vport_stats.rx_bytes;
4852         rpriv->prev_vf_vport_stats = cur_stats;
4853         flow_stats_update(&ma->stats, dbytes, dpkts, 0, jiffies,
4854                           FLOW_ACTION_HW_STATS_DELAYED);
4855 }
4856
4857 static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv,
4858                                               struct mlx5e_priv *peer_priv)
4859 {
4860         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
4861         struct mlx5_core_dev *peer_mdev = peer_priv->mdev;
4862         struct mlx5e_hairpin_entry *hpe, *tmp;
4863         LIST_HEAD(init_wait_list);
4864         u16 peer_vhca_id;
4865         int bkt;
4866
4867         if (!mlx5e_same_hw_devs(priv, peer_priv))
4868                 return;
4869
4870         peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
4871
4872         mutex_lock(&tc->hairpin_tbl_lock);
4873         hash_for_each(tc->hairpin_tbl, bkt, hpe, hairpin_hlist)
4874                 if (refcount_inc_not_zero(&hpe->refcnt))
4875                         list_add(&hpe->dead_peer_wait_list, &init_wait_list);
4876         mutex_unlock(&tc->hairpin_tbl_lock);
4877
4878         list_for_each_entry_safe(hpe, tmp, &init_wait_list, dead_peer_wait_list) {
4879                 wait_for_completion(&hpe->res_ready);
4880                 if (!IS_ERR_OR_NULL(hpe->hp) && hpe->peer_vhca_id == peer_vhca_id)
4881                         mlx5_core_hairpin_clear_dead_peer(hpe->hp->pair);
4882
4883                 mlx5e_hairpin_put(priv, hpe);
4884         }
4885 }
4886
4887 static int mlx5e_tc_netdev_event(struct notifier_block *this,
4888                                  unsigned long event, void *ptr)
4889 {
4890         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
4891         struct mlx5e_priv *peer_priv;
4892         struct mlx5e_tc_table *tc;
4893         struct mlx5e_priv *priv;
4894
4895         if (ndev->netdev_ops != &mlx5e_netdev_ops ||
4896             event != NETDEV_UNREGISTER ||
4897             ndev->reg_state == NETREG_REGISTERED)
4898                 return NOTIFY_DONE;
4899
4900         tc = container_of(this, struct mlx5e_tc_table, netdevice_nb);
4901         priv = tc->priv;
4902         peer_priv = netdev_priv(ndev);
4903         if (priv == peer_priv ||
4904             !(priv->netdev->features & NETIF_F_HW_TC))
4905                 return NOTIFY_DONE;
4906
4907         mlx5e_tc_hairpin_update_dead_peer(priv, peer_priv);
4908
4909         return NOTIFY_DONE;
4910 }
4911
4912 static int mlx5e_tc_nic_get_ft_size(struct mlx5_core_dev *dev)
4913 {
4914         int tc_grp_size, tc_tbl_size;
4915         u32 max_flow_counter;
4916
4917         max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) |
4918                             MLX5_CAP_GEN(dev, max_flow_counter_15_0);
4919
4920         tc_grp_size = min_t(int, max_flow_counter, MLX5E_TC_TABLE_MAX_GROUP_SIZE);
4921
4922         tc_tbl_size = min_t(int, tc_grp_size * MLX5E_TC_TABLE_NUM_GROUPS,
4923                             BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev, log_max_ft_size)));
4924
4925         return tc_tbl_size;
4926 }
4927
4928 static int mlx5e_tc_nic_create_miss_table(struct mlx5e_priv *priv)
4929 {
4930         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
4931         struct mlx5_flow_table **ft = &tc->miss_t;
4932         struct mlx5_flow_table_attr ft_attr = {};
4933         struct mlx5_flow_namespace *ns;
4934         int err = 0;
4935
4936         ft_attr.max_fte = 1;
4937         ft_attr.autogroup.max_num_groups = 1;
4938         ft_attr.level = MLX5E_TC_MISS_LEVEL;
4939         ft_attr.prio = 0;
4940         ns = mlx5_get_flow_namespace(priv->mdev, MLX5_FLOW_NAMESPACE_KERNEL);
4941
4942         *ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr);
4943         if (IS_ERR(*ft)) {
4944                 err = PTR_ERR(*ft);
4945                 netdev_err(priv->netdev, "failed to create tc nic miss table err=%d\n", err);
4946         }
4947
4948         return err;
4949 }
4950
4951 static void mlx5e_tc_nic_destroy_miss_table(struct mlx5e_priv *priv)
4952 {
4953         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
4954
4955         mlx5_destroy_flow_table(tc->miss_t);
4956 }
4957
4958 int mlx5e_tc_nic_init(struct mlx5e_priv *priv)
4959 {
4960         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
4961         struct mlx5_core_dev *dev = priv->mdev;
4962         struct mapping_ctx *chains_mapping;
4963         struct mlx5_chains_attr attr = {};
4964         u64 mapping_id;
4965         int err;
4966
4967         mlx5e_mod_hdr_tbl_init(&tc->mod_hdr);
4968         mutex_init(&tc->t_lock);
4969         mutex_init(&tc->hairpin_tbl_lock);
4970         hash_init(tc->hairpin_tbl);
4971         tc->priv = priv;
4972
4973         err = rhashtable_init(&tc->ht, &tc_ht_params);
4974         if (err)
4975                 return err;
4976
4977         lockdep_set_class(&tc->ht.mutex, &tc_ht_lock_key);
4978
4979         mapping_id = mlx5_query_nic_system_image_guid(dev);
4980
4981         chains_mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_CHAIN,
4982                                                sizeof(struct mlx5_mapped_obj),
4983                                                MLX5E_TC_TABLE_CHAIN_TAG_MASK, true);
4984
4985         if (IS_ERR(chains_mapping)) {
4986                 err = PTR_ERR(chains_mapping);
4987                 goto err_mapping;
4988         }
4989         tc->mapping = chains_mapping;
4990
4991         err = mlx5e_tc_nic_create_miss_table(priv);
4992         if (err)
4993                 goto err_chains;
4994
4995         if (MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level))
4996                 attr.flags = MLX5_CHAINS_AND_PRIOS_SUPPORTED |
4997                         MLX5_CHAINS_IGNORE_FLOW_LEVEL_SUPPORTED;
4998         attr.ns = MLX5_FLOW_NAMESPACE_KERNEL;
4999         attr.max_ft_sz = mlx5e_tc_nic_get_ft_size(dev);
5000         attr.max_grp_num = MLX5E_TC_TABLE_NUM_GROUPS;
5001         attr.default_ft = tc->miss_t;
5002         attr.mapping = chains_mapping;
5003
5004         tc->chains = mlx5_chains_create(dev, &attr);
5005         if (IS_ERR(tc->chains)) {
5006                 err = PTR_ERR(tc->chains);
5007                 goto err_miss;
5008         }
5009
5010         tc->post_act = mlx5e_tc_post_act_init(priv, tc->chains, MLX5_FLOW_NAMESPACE_KERNEL);
5011         tc->ct = mlx5_tc_ct_init(priv, tc->chains, &tc->mod_hdr,
5012                                  MLX5_FLOW_NAMESPACE_KERNEL, tc->post_act);
5013
5014         tc->netdevice_nb.notifier_call = mlx5e_tc_netdev_event;
5015         err = register_netdevice_notifier_dev_net(priv->netdev,
5016                                                   &tc->netdevice_nb,
5017                                                   &tc->netdevice_nn);
5018         if (err) {
5019                 tc->netdevice_nb.notifier_call = NULL;
5020                 mlx5_core_warn(priv->mdev, "Failed to register netdev notifier\n");
5021                 goto err_reg;
5022         }
5023
5024         return 0;
5025
5026 err_reg:
5027         mlx5_tc_ct_clean(tc->ct);
5028         mlx5e_tc_post_act_destroy(tc->post_act);
5029         mlx5_chains_destroy(tc->chains);
5030 err_miss:
5031         mlx5e_tc_nic_destroy_miss_table(priv);
5032 err_chains:
5033         mapping_destroy(chains_mapping);
5034 err_mapping:
5035         rhashtable_destroy(&tc->ht);
5036         return err;
5037 }
5038
5039 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
5040 {
5041         struct mlx5e_tc_flow *flow = ptr;
5042         struct mlx5e_priv *priv = flow->priv;
5043
5044         mlx5e_tc_del_flow(priv, flow);
5045         kfree(flow);
5046 }
5047
5048 void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv)
5049 {
5050         struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
5051
5052         if (tc->netdevice_nb.notifier_call)
5053                 unregister_netdevice_notifier_dev_net(priv->netdev,
5054                                                       &tc->netdevice_nb,
5055                                                       &tc->netdevice_nn);
5056
5057         mlx5e_mod_hdr_tbl_destroy(&tc->mod_hdr);
5058         mutex_destroy(&tc->hairpin_tbl_lock);
5059
5060         rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, NULL);
5061
5062         if (!IS_ERR_OR_NULL(tc->t)) {
5063                 mlx5_chains_put_table(tc->chains, 0, 1, MLX5E_TC_FT_LEVEL);
5064                 tc->t = NULL;
5065         }
5066         mutex_destroy(&tc->t_lock);
5067
5068         mlx5_tc_ct_clean(tc->ct);
5069         mlx5e_tc_post_act_destroy(tc->post_act);
5070         mapping_destroy(tc->mapping);
5071         mlx5_chains_destroy(tc->chains);
5072         mlx5e_tc_nic_destroy_miss_table(priv);
5073 }
5074
5075 int mlx5e_tc_ht_init(struct rhashtable *tc_ht)
5076 {
5077         int err;
5078
5079         err = rhashtable_init(tc_ht, &tc_ht_params);
5080         if (err)
5081                 return err;
5082
5083         lockdep_set_class(&tc_ht->mutex, &tc_ht_lock_key);
5084
5085         return 0;
5086 }
5087
5088 void mlx5e_tc_ht_cleanup(struct rhashtable *tc_ht)
5089 {
5090         rhashtable_free_and_destroy(tc_ht, _mlx5e_tc_del_flow, NULL);
5091 }
5092
5093 int mlx5e_tc_esw_init(struct mlx5_rep_uplink_priv *uplink_priv)
5094 {
5095         const size_t sz_enc_opts = sizeof(struct tunnel_match_enc_opts);
5096         struct mlx5e_rep_priv *rpriv;
5097         struct mapping_ctx *mapping;
5098         struct mlx5_eswitch *esw;
5099         struct mlx5e_priv *priv;
5100         u64 mapping_id;
5101         int err = 0;
5102
5103         rpriv = container_of(uplink_priv, struct mlx5e_rep_priv, uplink_priv);
5104         priv = netdev_priv(rpriv->netdev);
5105         esw = priv->mdev->priv.eswitch;
5106
5107         uplink_priv->post_act = mlx5e_tc_post_act_init(priv, esw_chains(esw),
5108                                                        MLX5_FLOW_NAMESPACE_FDB);
5109         uplink_priv->ct_priv = mlx5_tc_ct_init(netdev_priv(priv->netdev),
5110                                                esw_chains(esw),
5111                                                &esw->offloads.mod_hdr,
5112                                                MLX5_FLOW_NAMESPACE_FDB,
5113                                                uplink_priv->post_act);
5114
5115         uplink_priv->int_port_priv = mlx5e_tc_int_port_init(netdev_priv(priv->netdev));
5116
5117         uplink_priv->tc_psample = mlx5e_tc_sample_init(esw, uplink_priv->post_act);
5118
5119         mapping_id = mlx5_query_nic_system_image_guid(esw->dev);
5120
5121         mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_TUNNEL,
5122                                         sizeof(struct tunnel_match_key),
5123                                         TUNNEL_INFO_BITS_MASK, true);
5124
5125         if (IS_ERR(mapping)) {
5126                 err = PTR_ERR(mapping);
5127                 goto err_tun_mapping;
5128         }
5129         uplink_priv->tunnel_mapping = mapping;
5130
5131         /* Two last values are reserved for stack devices slow path table mark
5132          * and bridge ingress push mark.
5133          */
5134         mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_TUNNEL_ENC_OPTS,
5135                                         sz_enc_opts, ENC_OPTS_BITS_MASK - 2, true);
5136         if (IS_ERR(mapping)) {
5137                 err = PTR_ERR(mapping);
5138                 goto err_enc_opts_mapping;
5139         }
5140         uplink_priv->tunnel_enc_opts_mapping = mapping;
5141
5142         uplink_priv->encap = mlx5e_tc_tun_init(priv);
5143         if (IS_ERR(uplink_priv->encap)) {
5144                 err = PTR_ERR(uplink_priv->encap);
5145                 goto err_register_fib_notifier;
5146         }
5147
5148         return 0;
5149
5150 err_register_fib_notifier:
5151         mapping_destroy(uplink_priv->tunnel_enc_opts_mapping);
5152 err_enc_opts_mapping:
5153         mapping_destroy(uplink_priv->tunnel_mapping);
5154 err_tun_mapping:
5155         mlx5e_tc_sample_cleanup(uplink_priv->tc_psample);
5156         mlx5e_tc_int_port_cleanup(uplink_priv->int_port_priv);
5157         mlx5_tc_ct_clean(uplink_priv->ct_priv);
5158         netdev_warn(priv->netdev,
5159                     "Failed to initialize tc (eswitch), err: %d", err);
5160         mlx5e_tc_post_act_destroy(uplink_priv->post_act);
5161         return err;
5162 }
5163
5164 void mlx5e_tc_esw_cleanup(struct mlx5_rep_uplink_priv *uplink_priv)
5165 {
5166         mlx5e_tc_tun_cleanup(uplink_priv->encap);
5167
5168         mapping_destroy(uplink_priv->tunnel_enc_opts_mapping);
5169         mapping_destroy(uplink_priv->tunnel_mapping);
5170
5171         mlx5e_tc_sample_cleanup(uplink_priv->tc_psample);
5172         mlx5e_tc_int_port_cleanup(uplink_priv->int_port_priv);
5173         mlx5_tc_ct_clean(uplink_priv->ct_priv);
5174         mlx5e_flow_meters_cleanup(uplink_priv->flow_meters);
5175         mlx5e_tc_post_act_destroy(uplink_priv->post_act);
5176 }
5177
5178 int mlx5e_tc_num_filters(struct mlx5e_priv *priv, unsigned long flags)
5179 {
5180         struct rhashtable *tc_ht = get_tc_ht(priv, flags);
5181
5182         return atomic_read(&tc_ht->nelems);
5183 }
5184
5185 void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw)
5186 {
5187         struct mlx5e_tc_flow *flow, *tmp;
5188
5189         list_for_each_entry_safe(flow, tmp, &esw->offloads.peer_flows, peer)
5190                 __mlx5e_tc_del_fdb_peer_flow(flow);
5191 }
5192
5193 void mlx5e_tc_reoffload_flows_work(struct work_struct *work)
5194 {
5195         struct mlx5_rep_uplink_priv *rpriv =
5196                 container_of(work, struct mlx5_rep_uplink_priv,
5197                              reoffload_flows_work);
5198         struct mlx5e_tc_flow *flow, *tmp;
5199
5200         mutex_lock(&rpriv->unready_flows_lock);
5201         list_for_each_entry_safe(flow, tmp, &rpriv->unready_flows, unready) {
5202                 if (!mlx5e_tc_add_fdb_flow(flow->priv, flow, NULL))
5203                         unready_flow_del(flow);
5204         }
5205         mutex_unlock(&rpriv->unready_flows_lock);
5206 }
5207
5208 static int mlx5e_setup_tc_cls_flower(struct mlx5e_priv *priv,
5209                                      struct flow_cls_offload *cls_flower,
5210                                      unsigned long flags)
5211 {
5212         switch (cls_flower->command) {
5213         case FLOW_CLS_REPLACE:
5214                 return mlx5e_configure_flower(priv->netdev, priv, cls_flower,
5215                                               flags);
5216         case FLOW_CLS_DESTROY:
5217                 return mlx5e_delete_flower(priv->netdev, priv, cls_flower,
5218                                            flags);
5219         case FLOW_CLS_STATS:
5220                 return mlx5e_stats_flower(priv->netdev, priv, cls_flower,
5221                                           flags);
5222         default:
5223                 return -EOPNOTSUPP;
5224         }
5225 }
5226
5227 int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
5228                             void *cb_priv)
5229 {
5230         unsigned long flags = MLX5_TC_FLAG(INGRESS);
5231         struct mlx5e_priv *priv = cb_priv;
5232
5233         if (!priv->netdev || !netif_device_present(priv->netdev))
5234                 return -EOPNOTSUPP;
5235
5236         if (mlx5e_is_uplink_rep(priv))
5237                 flags |= MLX5_TC_FLAG(ESW_OFFLOAD);
5238         else
5239                 flags |= MLX5_TC_FLAG(NIC_OFFLOAD);
5240
5241         switch (type) {
5242         case TC_SETUP_CLSFLOWER:
5243                 return mlx5e_setup_tc_cls_flower(priv, type_data, flags);
5244         default:
5245                 return -EOPNOTSUPP;
5246         }
5247 }
5248
5249 bool mlx5e_tc_update_skb(struct mlx5_cqe64 *cqe,
5250                          struct sk_buff *skb)
5251 {
5252 #if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
5253         u32 chain = 0, chain_tag, reg_b, zone_restore_id;
5254         struct mlx5e_priv *priv = netdev_priv(skb->dev);
5255         struct mlx5_mapped_obj mapped_obj;
5256         struct tc_skb_ext *tc_skb_ext;
5257         struct mlx5e_tc_table *tc;
5258         int err;
5259
5260         reg_b = be32_to_cpu(cqe->ft_metadata);
5261         tc = mlx5e_fs_get_tc(priv->fs);
5262         chain_tag = reg_b & MLX5E_TC_TABLE_CHAIN_TAG_MASK;
5263
5264         err = mapping_find(tc->mapping, chain_tag, &mapped_obj);
5265         if (err) {
5266                 netdev_dbg(priv->netdev,
5267                            "Couldn't find chain for chain tag: %d, err: %d\n",
5268                            chain_tag, err);
5269                 return false;
5270         }
5271
5272         if (mapped_obj.type == MLX5_MAPPED_OBJ_CHAIN) {
5273                 chain = mapped_obj.chain;
5274                 tc_skb_ext = tc_skb_ext_alloc(skb);
5275                 if (WARN_ON(!tc_skb_ext))
5276                         return false;
5277
5278                 tc_skb_ext->chain = chain;
5279
5280                 zone_restore_id = (reg_b >> MLX5_REG_MAPPING_MOFFSET(NIC_ZONE_RESTORE_TO_REG)) &
5281                         ESW_ZONE_ID_MASK;
5282
5283                 if (!mlx5e_tc_ct_restore_flow(tc->ct, skb,
5284                                               zone_restore_id))
5285                         return false;
5286         } else {
5287                 netdev_dbg(priv->netdev, "Invalid mapped object type: %d\n", mapped_obj.type);
5288                 return false;
5289         }
5290 #endif /* CONFIG_NET_TC_SKB_EXT */
5291
5292         return true;
5293 }