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