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 RTE_VERSION_NUM(17, 11, 10, 16) < RTE_VERSION
  74         if (attr->transfer)
  75                 params->dir_attr |= BNXT_ULP_FLOW_ATTR_TRANSFER;
  76 #endif
  77 }
  78
  79 void
  80 bnxt_ulp_init_mapper_params(struct bnxt_ulp_mapper_create_parms *mapper_cparms,
  81                             struct ulp_rte_parser_params *params,
  82                             enum bnxt_ulp_fdb_type flow_type)
  83 {
  84         memset(mapper_cparms, 0, sizeof(*mapper_cparms));
  85         mapper_cparms->flow_type = flow_type;
  86         mapper_cparms->app_priority = params->priority;
  87         mapper_cparms->dir_attr = params->dir_attr;
  88         mapper_cparms->class_tid = params->class_id;
  89         mapper_cparms->act_tid = params->act_tmpl;
  90         mapper_cparms->func_id = params->func_id;
  91         mapper_cparms->hdr_bitmap = &params->hdr_bitmap;
  92         mapper_cparms->hdr_field = params->hdr_field;
  93         mapper_cparms->comp_fld = params->comp_fld;
  94         mapper_cparms->act = &params->act_bitmap;
  95         mapper_cparms->act_prop = &params->act_prop;
  96         mapper_cparms->flow_id = params->fid;
  97         mapper_cparms->parent_flow = params->parent_flow;
  98         mapper_cparms->parent_fid = params->parent_fid;
  99         mapper_cparms->fld_bitmap = &params->fld_bitmap;
 100         mapper_cparms->flow_pattern_id = params->flow_pattern_id;
 101         mapper_cparms->act_pattern_id = params->act_pattern_id;
 102
 103         /* update the signature fields into the computed field list */
 104         ULP_COMP_FLD_IDX_WR(params, BNXT_ULP_CF_IDX_HDR_SIG_ID,
 105                             params->hdr_sig_id);
 106         ULP_COMP_FLD_IDX_WR(params, BNXT_ULP_CF_IDX_FLOW_SIG_ID,
 107                             params->flow_sig_id);
 108 }
 109
 110 /* Function to create the rte flow. */
 111 static struct rte_flow *
 112 bnxt_ulp_flow_create(struct rte_eth_dev *dev,
 113                      const struct rte_flow_attr *attr,
 114                      const struct rte_flow_item pattern[],
 115                      const struct rte_flow_action actions[],
 116                      struct rte_flow_error *error)
 117 {
 118         struct bnxt_ulp_mapper_create_parms mapper_cparms = { 0 };
 119         struct ulp_rte_parser_params params;
 120         struct bnxt_ulp_context *ulp_ctx;
 121         int rc, ret = BNXT_TF_RC_ERROR;
 122         struct rte_flow *flow_id;
 123         uint16_t func_id;
 124         uint32_t fid;
 125
 126         if (bnxt_ulp_flow_validate_args(attr,
 127                                         pattern, actions,
 128                                         error) == BNXT_TF_RC_ERROR) {
 129                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 130                 goto flow_error;
 131         }
 132
 133         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 134         if (!ulp_ctx) {
 135                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 136                 goto flow_error;
 137         }
 138
 139         /* Initialize the parser params */
 140         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 141         params.ulp_ctx = ulp_ctx;
 142
 143         /* Set the flow attributes */
 144         bnxt_ulp_set_dir_attributes(&params, attr);
 145
 146         /* copy the device port id and direction for further processing */
 147         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_INCOMING_IF,
 148                             dev->data->port_id);
 149         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_DEV_PORT_ID,
 150                             dev->data->port_id);
 151         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_SVIF_FLAG,
 152                             BNXT_ULP_INVALID_SVIF_VAL);
 153
 154         /* Get the function id */
 155         if (ulp_port_db_port_func_id_get(ulp_ctx,
 156                                          dev->data->port_id,
 157                                          &func_id)) {
 158                 BNXT_TF_DBG(ERR, "conversion of port to func id failed\n");
 159                 goto flow_error;
 160         }
 161
 162         /* Protect flow creation */
 163         if (bnxt_ulp_cntxt_acquire_fdb_lock(ulp_ctx)) {
 164                 BNXT_TF_DBG(ERR, "Flow db lock acquire failed\n");
 165                 goto flow_error;
 166         }
 167
 168         /* Allocate a Flow ID for attaching all resources for the flow to.
 169          * Once allocated, all errors have to walk the list of resources and
 170          * free each of them.
 171          */
 172         rc = ulp_flow_db_fid_alloc(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR,
 173                                    func_id, &fid);
 174         if (rc) {
 175                 BNXT_TF_DBG(ERR, "Unable to allocate flow table entry\n");
 176                 goto release_lock;
 177         }
 178
 179         /* Parse the rte flow pattern */
 180         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 181         if (ret != BNXT_TF_RC_SUCCESS)
 182                 goto free_fid;
 183
 184         /* Parse the rte flow action */
 185         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 186         if (ret != BNXT_TF_RC_SUCCESS)
 187                 goto free_fid;
 188
 189         params.fid = fid;
 190         params.func_id = func_id;
 191         params.priority = attr->priority;
 192         params.port_id = dev->data->port_id;
 193         /* Perform the rte flow post process */
 194         ret = bnxt_ulp_rte_parser_post_process(&params);
 195         if (ret == BNXT_TF_RC_ERROR)
 196                 goto free_fid;
 197         else if (ret == BNXT_TF_RC_FID)
 198                 goto return_fid;
 199
 200         ret = ulp_matcher_pattern_match(&params, &params.class_id);
 201         if (ret != BNXT_TF_RC_SUCCESS)
 202                 goto free_fid;
 203
 204         ret = ulp_matcher_action_match(&params, &params.act_tmpl);
 205         if (ret != BNXT_TF_RC_SUCCESS)
 206                 goto free_fid;
 207
 208         bnxt_ulp_init_mapper_params(&mapper_cparms, &params,
 209                                     BNXT_ULP_FDB_TYPE_REGULAR);
 210         /* Call the ulp mapper to create the flow in the hardware. */
 211         ret = ulp_mapper_flow_create(ulp_ctx, &mapper_cparms);
 212         if (ret)
 213                 goto free_fid;
 214
 215 return_fid:
 216         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 217
 218         flow_id = (struct rte_flow *)((uintptr_t)fid);
 219         return flow_id;
 220
 221 free_fid:
 222         ulp_flow_db_fid_free(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR, fid);
 223 release_lock:
 224         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 225 flow_error:
 226         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 227                            "Failed to create flow.");
 228         return NULL;
 229 }
 230
 231 /* Function to validate the rte flow. */
 232 static int
 233 bnxt_ulp_flow_validate(struct rte_eth_dev *dev,
 234                        const struct rte_flow_attr *attr,
 235                        const struct rte_flow_item pattern[],
 236                        const struct rte_flow_action actions[],
 237                        struct rte_flow_error *error)
 238 {
 239         struct ulp_rte_parser_params params;
 240         struct bnxt_ulp_context *ulp_ctx;
 241         uint32_t class_id, act_tmpl;
 242         int ret = BNXT_TF_RC_ERROR;
 243
 244         if (bnxt_ulp_flow_validate_args(attr,
 245                                         pattern, actions,
 246                                         error) == BNXT_TF_RC_ERROR) {
 247                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 248                 goto parse_error;
 249         }
 250
 251         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 252         if (!ulp_ctx) {
 253                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 254                 goto parse_error;
 255         }
 256
 257         /* Initialize the parser params */
 258         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 259         params.ulp_ctx = ulp_ctx;
 260
 261         /* Set the flow attributes */
 262         bnxt_ulp_set_dir_attributes(&params, attr);
 263
 264         /* Parse the rte flow pattern */
 265         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 266         if (ret != BNXT_TF_RC_SUCCESS)
 267                 goto parse_error;
 268
 269         /* Parse the rte flow action */
 270         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 271         if (ret != BNXT_TF_RC_SUCCESS)
 272                 goto parse_error;
 273
 274         /* Perform the rte flow post process */
 275         ret = bnxt_ulp_rte_parser_post_process(&params);
 276         if (ret == BNXT_TF_RC_ERROR)
 277                 goto parse_error;
 278         else if (ret == BNXT_TF_RC_FID)
 279                 return 0;
 280
 281         ret = ulp_matcher_pattern_match(&params, &class_id);
 282
 283         if (ret != BNXT_TF_RC_SUCCESS)
 284                 goto parse_error;
 285
 286         ret = ulp_matcher_action_match(&params, &act_tmpl);
 287         if (ret != BNXT_TF_RC_SUCCESS)
 288                 goto parse_error;
 289
 290         /* all good return success */
 291         return ret;
 292
 293 parse_error:
 294         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 295                            "Failed to validate flow.");
 296         return -EINVAL;
 297 }
 298
 299 /* Function to destroy the rte flow. */
 300 int
 301 bnxt_ulp_flow_destroy(struct rte_eth_dev *dev,
 302                       struct rte_flow *flow,
 303                       struct rte_flow_error *error)
 304 {
 305         struct bnxt_ulp_context *ulp_ctx;
 306         uint32_t flow_id;
 307         uint16_t func_id;
 308         int ret;
 309
 310         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 311         if (!ulp_ctx) {
 312                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 313                 if (error)
 314                         rte_flow_error_set(error, EINVAL,
 315                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 316                                            "Failed to destroy flow.");
 317                 return -EINVAL;
 318         }
 319
 320         flow_id = (uint32_t)(uintptr_t)flow;
 321
 322         if (ulp_port_db_port_func_id_get(ulp_ctx,
 323                                          dev->data->port_id,
 324                                          &func_id)) {
 325                 BNXT_TF_DBG(ERR, "conversion of port to func id failed\n");
 326                 if (error)
 327                         rte_flow_error_set(error, EINVAL,
 328                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 329                                            "Failed to destroy flow.");
 330                 return -EINVAL;
 331         }
 332
 333         if (ulp_flow_db_validate_flow_func(ulp_ctx, flow_id, func_id) ==
 334             false) {
 335                 BNXT_TF_DBG(ERR, "Incorrect device params\n");
 336                 if (error)
 337                         rte_flow_error_set(error, EINVAL,
 338                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 339                                            "Failed to destroy flow.");
 340                 return -EINVAL;
 341         }
 342
 343         if (bnxt_ulp_cntxt_acquire_fdb_lock(ulp_ctx)) {
 344                 BNXT_TF_DBG(ERR, "Flow db lock acquire failed\n");
 345                 return -EINVAL;
 346         }
 347         ret = ulp_mapper_flow_destroy(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR,
 348                                       flow_id);
 349         if (ret) {
 350                 BNXT_TF_DBG(ERR, "Failed to destroy flow.\n");
 351                 if (error)
 352                         rte_flow_error_set(error, -ret,
 353                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 354                                            "Failed to destroy flow.");
 355         }
 356         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 357
 358         return ret;
 359 }
 360
 361 /* Function to destroy the rte flows. */
 362 static int32_t
 363 bnxt_ulp_flow_flush(struct rte_eth_dev *eth_dev,
 364                     struct rte_flow_error *error)
 365 {
 366         struct bnxt_ulp_context *ulp_ctx;
 367         int32_t ret = 0;
 368         uint16_t func_id;
 369
 370         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 371         if (!ulp_ctx) {
 372                 return ret;
 373         }
 374
 375         /* Free the resources for the last device */
 376         if (ulp_ctx_deinit_allowed(ulp_ctx)) {
 377                 ret = ulp_flow_db_session_flow_flush(ulp_ctx);
 378         } else if (bnxt_ulp_cntxt_ptr2_flow_db_get(ulp_ctx)) {
 379                 ret = ulp_port_db_port_func_id_get(ulp_ctx,
 380                                                    eth_dev->data->port_id,
 381                                                    &func_id);
 382                 if (!ret)
 383                         ret = ulp_flow_db_function_flow_flush(ulp_ctx, func_id);
 384                 else
 385                         BNXT_TF_DBG(ERR, "convert port to func id failed\n");
 386         }
 387         if (ret)
 388                 rte_flow_error_set(error, ret,
 389                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 390                                    "Failed to flush flow.");
 391         return ret;
 392 }
 393
 394 /* Function to query the rte flows. */
 395 static int32_t
 396 bnxt_ulp_flow_query(struct rte_eth_dev *eth_dev,
 397                     struct rte_flow *flow,
 398                     const struct rte_flow_action *action,
 399                     void *data,
 400                     struct rte_flow_error *error)
 401 {
 402         int rc = 0;
 403         struct bnxt_ulp_context *ulp_ctx;
 404         struct rte_flow_query_count *count;
 405         uint32_t flow_id;
 406
 407         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 408         if (!ulp_ctx) {
 409                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 410                 rte_flow_error_set(error, EINVAL,
 411                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 412                                    "Failed to query flow.");
 413                 return -EINVAL;
 414         }
 415
 416         flow_id = (uint32_t)(uintptr_t)flow;
 417
 418         switch (action->type) {
 419         case RTE_FLOW_ACTION_TYPE_COUNT:
 420                 count = data;
 421                 rc = ulp_fc_mgr_query_count_get(ulp_ctx, flow_id, count);
 422                 if (rc) {
 423                         rte_flow_error_set(error, EINVAL,
 424                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 425                                            "Failed to query flow.");
 426                 }
 427                 break;
 428         default:
 429                 rte_flow_error_set(error, -rc, RTE_FLOW_ERROR_TYPE_ACTION_NUM,
 430                                    NULL, "Unsupported action item");
 431         }
 432
 433         return rc;
 434 }
 435
 436 const struct rte_flow_ops bnxt_ulp_rte_flow_ops = {
 437         .validate = bnxt_ulp_flow_validate,
 438         .create = bnxt_ulp_flow_create,
 439         .destroy = bnxt_ulp_flow_destroy,
 440         .flush = bnxt_ulp_flow_flush,
 441         .query = bnxt_ulp_flow_query,
 442         .isolate = NULL
 443 };