drivers/net/bnxt/tf_ulp/bnxt_ulp_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2021 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include "bnxt.h"
   7 #include "bnxt_tf_common.h"
   8 #include "ulp_rte_parser.h"
   9 #include "ulp_matcher.h"
  10 #include "ulp_flow_db.h"
  11 #include "ulp_mapper.h"
  12 #include "ulp_fc_mgr.h"
  13 #include "ulp_port_db.h"
  14 #include <rte_malloc.h>
  15
  16 static int32_t
  17 bnxt_ulp_flow_validate_args(const struct rte_flow_attr *attr,
  18                             const struct rte_flow_item pattern[],
  19                             const struct rte_flow_action actions[],
  20                             struct rte_flow_error *error)
  21 {
  22         /* Perform the validation of the arguments for null */
  23         if (!error)
  24                 return BNXT_TF_RC_ERROR;
  25
  26         if (!pattern) {
  27                 rte_flow_error_set(error,
  28                                    EINVAL,
  29                                    RTE_FLOW_ERROR_TYPE_ITEM_NUM,
  30                                    NULL,
  31                                    "NULL pattern.");
  32                 return BNXT_TF_RC_ERROR;
  33         }
  34
  35         if (!actions) {
  36                 rte_flow_error_set(error,
  37                                    EINVAL,
  38                                    RTE_FLOW_ERROR_TYPE_ACTION_NUM,
  39                                    NULL,
  40                                    "NULL action.");
  41                 return BNXT_TF_RC_ERROR;
  42         }
  43
  44         if (!attr) {
  45                 rte_flow_error_set(error,
  46                                    EINVAL,
  47                                    RTE_FLOW_ERROR_TYPE_ATTR,
  48                                    NULL,
  49                                    "NULL attribute.");
  50                 return BNXT_TF_RC_ERROR;
  51         }
  52
  53         if (attr->egress && attr->ingress) {
  54                 rte_flow_error_set(error,
  55                                    EINVAL,
  56                                    RTE_FLOW_ERROR_TYPE_ATTR,
  57                                    attr,
  58                                    "EGRESS AND INGRESS UNSUPPORTED");
  59                 return BNXT_TF_RC_ERROR;
  60         }
  61         return BNXT_TF_RC_SUCCESS;
  62 }
  63
  64 static inline void
  65 bnxt_ulp_set_dir_attributes(struct ulp_rte_parser_params *params,
  66                             const struct rte_flow_attr *attr)
  67 {
  68         /* Set the flow attributes */
  69         if (attr->egress)
  70                 params->dir_attr |= BNXT_ULP_FLOW_ATTR_EGRESS;
  71         if (attr->ingress)
  72                 params->dir_attr |= BNXT_ULP_FLOW_ATTR_INGRESS;
  73         if (attr->transfer)
  74                 params->dir_attr |= BNXT_ULP_FLOW_ATTR_TRANSFER;
  75 }
  76
  77 void
  78 bnxt_ulp_init_mapper_params(struct bnxt_ulp_mapper_create_parms *mapper_cparms,
  79                             struct ulp_rte_parser_params *params,
  80                             enum bnxt_ulp_fdb_type flow_type)
  81 {
  82         memset(mapper_cparms, 0, sizeof(*mapper_cparms));
  83         mapper_cparms->flow_type        = flow_type;
  84         mapper_cparms->app_priority     = params->priority;
  85         mapper_cparms->dir_attr         = params->dir_attr;
  86         mapper_cparms->class_tid        = params->class_id;
  87         mapper_cparms->act_tid          = params->act_tmpl;
  88         mapper_cparms->func_id          = params->func_id;
  89         mapper_cparms->hdr_bitmap       = &params->hdr_bitmap;
  90         mapper_cparms->hdr_field        = params->hdr_field;
  91         mapper_cparms->comp_fld         = params->comp_fld;
  92         mapper_cparms->act              = &params->act_bitmap;
  93         mapper_cparms->act_prop         = &params->act_prop;
  94         mapper_cparms->flow_id          = params->fid;
  95         mapper_cparms->parent_flow      = params->parent_flow;
  96         mapper_cparms->parent_fid       = params->parent_fid;
  97         mapper_cparms->fld_bitmap       = &params->fld_bitmap;
  98 }
  99
 100 /* Function to create the rte flow. */
 101 static struct rte_flow *
 102 bnxt_ulp_flow_create(struct rte_eth_dev *dev,
 103                      const struct rte_flow_attr *attr,
 104                      const struct rte_flow_item pattern[],
 105                      const struct rte_flow_action actions[],
 106                      struct rte_flow_error *error)
 107 {
 108         struct bnxt_ulp_mapper_create_parms mapper_cparms = { 0 };
 109         struct ulp_rte_parser_params params;
 110         struct bnxt_ulp_context *ulp_ctx;
 111         int rc, ret = BNXT_TF_RC_ERROR;
 112         struct rte_flow *flow_id;
 113         uint16_t func_id;
 114         uint32_t fid;
 115
 116         if (bnxt_ulp_flow_validate_args(attr,
 117                                         pattern, actions,
 118                                         error) == BNXT_TF_RC_ERROR) {
 119                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 120                 goto flow_error;
 121         }
 122
 123         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 124         if (!ulp_ctx) {
 125                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 126                 goto flow_error;
 127         }
 128
 129         /* Initialize the parser params */
 130         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 131         params.ulp_ctx = ulp_ctx;
 132
 133         /* Set the flow attributes */
 134         bnxt_ulp_set_dir_attributes(&params, attr);
 135
 136         /* copy the device port id and direction for further processing */
 137         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_INCOMING_IF,
 138                             dev->data->port_id);
 139         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_SVIF_FLAG,
 140                             BNXT_ULP_INVALID_SVIF_VAL);
 141
 142         /* Get the function id */
 143         if (ulp_port_db_port_func_id_get(ulp_ctx,
 144                                          dev->data->port_id,
 145                                          &func_id)) {
 146                 BNXT_TF_DBG(ERR, "conversion of port to func id failed\n");
 147                 goto flow_error;
 148         }
 149
 150         /* Protect flow creation */
 151         if (bnxt_ulp_cntxt_acquire_fdb_lock(ulp_ctx)) {
 152                 BNXT_TF_DBG(ERR, "Flow db lock acquire failed\n");
 153                 goto flow_error;
 154         }
 155
 156         /* Allocate a Flow ID for attaching all resources for the flow to.
 157          * Once allocated, all errors have to walk the list of resources and
 158          * free each of them.
 159          */
 160         rc = ulp_flow_db_fid_alloc(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR,
 161                                    func_id, &fid);
 162         if (rc) {
 163                 BNXT_TF_DBG(ERR, "Unable to allocate flow table entry\n");
 164                 goto release_lock;
 165         }
 166
 167         /* Parse the rte flow pattern */
 168         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 169         if (ret != BNXT_TF_RC_SUCCESS)
 170                 goto free_fid;
 171
 172         /* Parse the rte flow action */
 173         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 174         if (ret != BNXT_TF_RC_SUCCESS)
 175                 goto free_fid;
 176
 177         params.fid = fid;
 178         params.func_id = func_id;
 179         params.priority = attr->priority;
 180         params.port_id = dev->data->port_id;
 181         /* Perform the rte flow post process */
 182         ret = bnxt_ulp_rte_parser_post_process(&params);
 183         if (ret == BNXT_TF_RC_ERROR)
 184                 goto free_fid;
 185         else if (ret == BNXT_TF_RC_FID)
 186                 goto return_fid;
 187
 188         ret = ulp_matcher_pattern_match(&params, &params.class_id);
 189         if (ret != BNXT_TF_RC_SUCCESS)
 190                 goto free_fid;
 191
 192         ret = ulp_matcher_action_match(&params, &params.act_tmpl);
 193         if (ret != BNXT_TF_RC_SUCCESS)
 194                 goto free_fid;
 195
 196         bnxt_ulp_init_mapper_params(&mapper_cparms, &params,
 197                                     BNXT_ULP_FDB_TYPE_REGULAR);
 198         /* Call the ulp mapper to create the flow in the hardware. */
 199         ret = ulp_mapper_flow_create(ulp_ctx, &mapper_cparms);
 200         if (ret)
 201                 goto free_fid;
 202
 203 return_fid:
 204         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 205
 206         flow_id = (struct rte_flow *)((uintptr_t)fid);
 207         return flow_id;
 208
 209 free_fid:
 210         ulp_flow_db_fid_free(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR, fid);
 211 release_lock:
 212         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 213 flow_error:
 214         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 215                            "Failed to create flow.");
 216         return NULL;
 217 }
 218
 219 /* Function to validate the rte flow. */
 220 static int
 221 bnxt_ulp_flow_validate(struct rte_eth_dev *dev,
 222                        const struct rte_flow_attr *attr,
 223                        const struct rte_flow_item pattern[],
 224                        const struct rte_flow_action actions[],
 225                        struct rte_flow_error *error)
 226 {
 227         struct ulp_rte_parser_params params;
 228         struct bnxt_ulp_context *ulp_ctx;
 229         uint32_t class_id, act_tmpl;
 230         int ret = BNXT_TF_RC_ERROR;
 231
 232         if (bnxt_ulp_flow_validate_args(attr,
 233                                         pattern, actions,
 234                                         error) == BNXT_TF_RC_ERROR) {
 235                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 236                 goto parse_error;
 237         }
 238
 239         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 240         if (!ulp_ctx) {
 241                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 242                 goto parse_error;
 243         }
 244
 245         /* Initialize the parser params */
 246         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 247         params.ulp_ctx = ulp_ctx;
 248
 249         /* Set the flow attributes */
 250         bnxt_ulp_set_dir_attributes(&params, attr);
 251
 252         /* Parse the rte flow pattern */
 253         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 254         if (ret != BNXT_TF_RC_SUCCESS)
 255                 goto parse_error;
 256
 257         /* Parse the rte flow action */
 258         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 259         if (ret != BNXT_TF_RC_SUCCESS)
 260                 goto parse_error;
 261
 262         /* Perform the rte flow post process */
 263         ret = bnxt_ulp_rte_parser_post_process(&params);
 264         if (ret == BNXT_TF_RC_ERROR)
 265                 goto parse_error;
 266         else if (ret == BNXT_TF_RC_FID)
 267                 return 0;
 268
 269         ret = ulp_matcher_pattern_match(&params, &class_id);
 270
 271         if (ret != BNXT_TF_RC_SUCCESS)
 272                 goto parse_error;
 273
 274         ret = ulp_matcher_action_match(&params, &act_tmpl);
 275         if (ret != BNXT_TF_RC_SUCCESS)
 276                 goto parse_error;
 277
 278         /* all good return success */
 279         return ret;
 280
 281 parse_error:
 282         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 283                            "Failed to validate flow.");
 284         return -EINVAL;
 285 }
 286
 287 /* Function to destroy the rte flow. */
 288 int
 289 bnxt_ulp_flow_destroy(struct rte_eth_dev *dev,
 290                       struct rte_flow *flow,
 291                       struct rte_flow_error *error)
 292 {
 293         struct bnxt_ulp_context *ulp_ctx;
 294         uint32_t flow_id;
 295         uint16_t func_id;
 296         int ret;
 297
 298         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 299         if (!ulp_ctx) {
 300                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 301                 if (error)
 302                         rte_flow_error_set(error, EINVAL,
 303                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 304                                            "Failed to destroy flow.");
 305                 return -EINVAL;
 306         }
 307
 308         flow_id = (uint32_t)(uintptr_t)flow;
 309
 310         if (ulp_port_db_port_func_id_get(ulp_ctx,
 311                                          dev->data->port_id,
 312                                          &func_id)) {
 313                 BNXT_TF_DBG(ERR, "conversion of port to func id failed\n");
 314                 if (error)
 315                         rte_flow_error_set(error, EINVAL,
 316                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 317                                            "Failed to destroy flow.");
 318                 return -EINVAL;
 319         }
 320
 321         if (ulp_flow_db_validate_flow_func(ulp_ctx, flow_id, func_id) ==
 322             false) {
 323                 BNXT_TF_DBG(ERR, "Incorrect device params\n");
 324                 if (error)
 325                         rte_flow_error_set(error, EINVAL,
 326                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 327                                            "Failed to destroy flow.");
 328                 return -EINVAL;
 329         }
 330
 331         if (bnxt_ulp_cntxt_acquire_fdb_lock(ulp_ctx)) {
 332                 BNXT_TF_DBG(ERR, "Flow db lock acquire failed\n");
 333                 return -EINVAL;
 334         }
 335         ret = ulp_mapper_flow_destroy(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR,
 336                                       flow_id);
 337         if (ret) {
 338                 BNXT_TF_DBG(ERR, "Failed to destroy flow.\n");
 339                 if (error)
 340                         rte_flow_error_set(error, -ret,
 341                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 342                                            "Failed to destroy flow.");
 343         }
 344         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 345
 346         return ret;
 347 }
 348
 349 /* Function to destroy the rte flows. */
 350 static int32_t
 351 bnxt_ulp_flow_flush(struct rte_eth_dev *eth_dev,
 352                     struct rte_flow_error *error)
 353 {
 354         struct bnxt_ulp_context *ulp_ctx;
 355         int32_t ret = 0;
 356         uint16_t func_id;
 357
 358         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 359         if (!ulp_ctx) {
 360                 return ret;
 361         }
 362
 363         /* Free the resources for the last device */
 364         if (ulp_ctx_deinit_allowed(ulp_ctx)) {
 365                 ret = ulp_flow_db_session_flow_flush(ulp_ctx);
 366         } else if (bnxt_ulp_cntxt_ptr2_flow_db_get(ulp_ctx)) {
 367                 ret = ulp_port_db_port_func_id_get(ulp_ctx,
 368                                                    eth_dev->data->port_id,
 369                                                    &func_id);
 370                 if (!ret)
 371                         ret = ulp_flow_db_function_flow_flush(ulp_ctx, func_id);
 372                 else
 373                         BNXT_TF_DBG(ERR, "convert port to func id failed\n");
 374         }
 375         if (ret)
 376                 rte_flow_error_set(error, ret,
 377                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 378                                    "Failed to flush flow.");
 379         return ret;
 380 }
 381
 382 /* Function to query the rte flows. */
 383 static int32_t
 384 bnxt_ulp_flow_query(struct rte_eth_dev *eth_dev,
 385                     struct rte_flow *flow,
 386                     const struct rte_flow_action *action,
 387                     void *data,
 388                     struct rte_flow_error *error)
 389 {
 390         int rc = 0;
 391         struct bnxt_ulp_context *ulp_ctx;
 392         struct rte_flow_query_count *count;
 393         uint32_t flow_id;
 394
 395         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 396         if (!ulp_ctx) {
 397                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 398                 rte_flow_error_set(error, EINVAL,
 399                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 400                                    "Failed to query flow.");
 401                 return -EINVAL;
 402         }
 403
 404         flow_id = (uint32_t)(uintptr_t)flow;
 405
 406         switch (action->type) {
 407         case RTE_FLOW_ACTION_TYPE_COUNT:
 408                 count = data;
 409                 rc = ulp_fc_mgr_query_count_get(ulp_ctx, flow_id, count);
 410                 if (rc) {
 411                         rte_flow_error_set(error, EINVAL,
 412                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 413                                            "Failed to query flow.");
 414                 }
 415                 break;
 416         default:
 417                 rte_flow_error_set(error, -rc, RTE_FLOW_ERROR_TYPE_ACTION_NUM,
 418                                    NULL, "Unsupported action item");
 419         }
 420
 421         return rc;
 422 }
 423
 424 const struct rte_flow_ops bnxt_ulp_rte_flow_ops = {
 425         .validate = bnxt_ulp_flow_validate,
 426         .create = bnxt_ulp_flow_create,
 427         .destroy = bnxt_ulp_flow_destroy,
 428         .flush = bnxt_ulp_flow_flush,
 429         .query = bnxt_ulp_flow_query,
 430         .isolate = NULL
 431 };