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         mapper_cparms->app_id = params->app_id;
 103
 104         /* update the signature fields into the computed field list */
 105         ULP_COMP_FLD_IDX_WR(params, BNXT_ULP_CF_IDX_HDR_SIG_ID,
 106                             params->hdr_sig_id);
 107         ULP_COMP_FLD_IDX_WR(params, BNXT_ULP_CF_IDX_FLOW_SIG_ID,
 108                             params->flow_sig_id);
 109 }
 110
 111 /* Function to create the rte flow. */
 112 static struct rte_flow *
 113 bnxt_ulp_flow_create(struct rte_eth_dev *dev,
 114                      const struct rte_flow_attr *attr,
 115                      const struct rte_flow_item pattern[],
 116                      const struct rte_flow_action actions[],
 117                      struct rte_flow_error *error)
 118 {
 119         struct bnxt_ulp_mapper_create_parms mapper_cparms = { 0 };
 120         struct ulp_rte_parser_params params;
 121         struct bnxt_ulp_context *ulp_ctx;
 122         int rc, ret = BNXT_TF_RC_ERROR;
 123         struct rte_flow *flow_id;
 124         uint16_t func_id;
 125         uint32_t fid;
 126
 127         if (bnxt_ulp_flow_validate_args(attr,
 128                                         pattern, actions,
 129                                         error) == BNXT_TF_RC_ERROR) {
 130                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 131                 goto flow_error;
 132         }
 133
 134         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 135         if (!ulp_ctx) {
 136                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 137                 goto flow_error;
 138         }
 139
 140         /* Initialize the parser params */
 141         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 142         params.ulp_ctx = ulp_ctx;
 143
 144         if (bnxt_ulp_cntxt_app_id_get(params.ulp_ctx, &params.app_id)) {
 145                 BNXT_TF_DBG(ERR, "failed to get the app id\n");
 146                 goto flow_error;
 147         }
 148
 149         /* Set the flow attributes */
 150         bnxt_ulp_set_dir_attributes(&params, attr);
 151
 152         /* copy the device port id and direction for further processing */
 153         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_INCOMING_IF,
 154                             dev->data->port_id);
 155         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_DEV_PORT_ID,
 156                             dev->data->port_id);
 157         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_SVIF_FLAG,
 158                             BNXT_ULP_INVALID_SVIF_VAL);
 159
 160         /* Get the function id */
 161         if (ulp_port_db_port_func_id_get(ulp_ctx,
 162                                          dev->data->port_id,
 163                                          &func_id)) {
 164                 BNXT_TF_DBG(ERR, "conversion of port to func id failed\n");
 165                 goto flow_error;
 166         }
 167
 168         /* Protect flow creation */
 169         if (bnxt_ulp_cntxt_acquire_fdb_lock(ulp_ctx)) {
 170                 BNXT_TF_DBG(ERR, "Flow db lock acquire failed\n");
 171                 goto flow_error;
 172         }
 173
 174         /* Allocate a Flow ID for attaching all resources for the flow to.
 175          * Once allocated, all errors have to walk the list of resources and
 176          * free each of them.
 177          */
 178         rc = ulp_flow_db_fid_alloc(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR,
 179                                    func_id, &fid);
 180         if (rc) {
 181                 BNXT_TF_DBG(ERR, "Unable to allocate flow table entry\n");
 182                 goto release_lock;
 183         }
 184
 185         /* Parse the rte flow pattern */
 186         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 187         if (ret != BNXT_TF_RC_SUCCESS)
 188                 goto free_fid;
 189
 190         /* Parse the rte flow action */
 191         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 192         if (ret != BNXT_TF_RC_SUCCESS)
 193                 goto free_fid;
 194
 195         params.fid = fid;
 196         params.func_id = func_id;
 197         params.priority = attr->priority;
 198         params.port_id = dev->data->port_id;
 199         /* Perform the rte flow post process */
 200         ret = bnxt_ulp_rte_parser_post_process(&params);
 201         if (ret == BNXT_TF_RC_ERROR)
 202                 goto free_fid;
 203         else if (ret == BNXT_TF_RC_FID)
 204                 goto return_fid;
 205
 206         ret = ulp_matcher_pattern_match(&params, &params.class_id);
 207         if (ret != BNXT_TF_RC_SUCCESS)
 208                 goto free_fid;
 209
 210         ret = ulp_matcher_action_match(&params, &params.act_tmpl);
 211         if (ret != BNXT_TF_RC_SUCCESS)
 212                 goto free_fid;
 213
 214         bnxt_ulp_init_mapper_params(&mapper_cparms, &params,
 215                                     BNXT_ULP_FDB_TYPE_REGULAR);
 216         /* Call the ulp mapper to create the flow in the hardware. */
 217         ret = ulp_mapper_flow_create(ulp_ctx, &mapper_cparms);
 218         if (ret)
 219                 goto free_fid;
 220
 221 return_fid:
 222         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 223
 224         flow_id = (struct rte_flow *)((uintptr_t)fid);
 225         return flow_id;
 226
 227 free_fid:
 228         ulp_flow_db_fid_free(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR, fid);
 229 release_lock:
 230         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 231 flow_error:
 232         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 233                            "Failed to create flow.");
 234         return NULL;
 235 }
 236
 237 /* Function to validate the rte flow. */
 238 static int
 239 bnxt_ulp_flow_validate(struct rte_eth_dev *dev,
 240                        const struct rte_flow_attr *attr,
 241                        const struct rte_flow_item pattern[],
 242                        const struct rte_flow_action actions[],
 243                        struct rte_flow_error *error)
 244 {
 245         struct ulp_rte_parser_params params;
 246         struct bnxt_ulp_context *ulp_ctx;
 247         uint32_t class_id, act_tmpl;
 248         int ret = BNXT_TF_RC_ERROR;
 249
 250         if (bnxt_ulp_flow_validate_args(attr,
 251                                         pattern, actions,
 252                                         error) == BNXT_TF_RC_ERROR) {
 253                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 254                 goto parse_error;
 255         }
 256
 257         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 258         if (!ulp_ctx) {
 259                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 260                 goto parse_error;
 261         }
 262
 263         /* Initialize the parser params */
 264         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 265         params.ulp_ctx = ulp_ctx;
 266
 267         if (bnxt_ulp_cntxt_app_id_get(params.ulp_ctx, &params.app_id)) {
 268                 BNXT_TF_DBG(ERR, "failed to get the app id\n");
 269                 goto parse_error;
 270         }
 271
 272         /* Set the flow attributes */
 273         bnxt_ulp_set_dir_attributes(&params, attr);
 274
 275         /* Parse the rte flow pattern */
 276         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 277         if (ret != BNXT_TF_RC_SUCCESS)
 278                 goto parse_error;
 279
 280         /* Parse the rte flow action */
 281         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 282         if (ret != BNXT_TF_RC_SUCCESS)
 283                 goto parse_error;
 284
 285         /* Perform the rte flow post process */
 286         ret = bnxt_ulp_rte_parser_post_process(&params);
 287         if (ret == BNXT_TF_RC_ERROR)
 288                 goto parse_error;
 289         else if (ret == BNXT_TF_RC_FID)
 290                 return 0;
 291
 292         ret = ulp_matcher_pattern_match(&params, &class_id);
 293
 294         if (ret != BNXT_TF_RC_SUCCESS)
 295                 goto parse_error;
 296
 297         ret = ulp_matcher_action_match(&params, &act_tmpl);
 298         if (ret != BNXT_TF_RC_SUCCESS)
 299                 goto parse_error;
 300
 301         /* all good return success */
 302         return ret;
 303
 304 parse_error:
 305         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 306                            "Failed to validate flow.");
 307         return -EINVAL;
 308 }
 309
 310 /* Function to destroy the rte flow. */
 311 int
 312 bnxt_ulp_flow_destroy(struct rte_eth_dev *dev,
 313                       struct rte_flow *flow,
 314                       struct rte_flow_error *error)
 315 {
 316         struct bnxt_ulp_context *ulp_ctx;
 317         uint32_t flow_id;
 318         uint16_t func_id;
 319         int ret;
 320
 321         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 322         if (!ulp_ctx) {
 323                 BNXT_TF_DBG(ERR, "ULP context is not initialized\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         flow_id = (uint32_t)(uintptr_t)flow;
 332
 333         if (ulp_port_db_port_func_id_get(ulp_ctx,
 334                                          dev->data->port_id,
 335                                          &func_id)) {
 336                 BNXT_TF_DBG(ERR, "conversion of port to func id failed\n");
 337                 if (error)
 338                         rte_flow_error_set(error, EINVAL,
 339                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 340                                            "Failed to destroy flow.");
 341                 return -EINVAL;
 342         }
 343
 344         if (ulp_flow_db_validate_flow_func(ulp_ctx, flow_id, func_id) ==
 345             false) {
 346                 BNXT_TF_DBG(ERR, "Incorrect device params\n");
 347                 if (error)
 348                         rte_flow_error_set(error, EINVAL,
 349                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 350                                            "Failed to destroy flow.");
 351                 return -EINVAL;
 352         }
 353
 354         if (bnxt_ulp_cntxt_acquire_fdb_lock(ulp_ctx)) {
 355                 BNXT_TF_DBG(ERR, "Flow db lock acquire failed\n");
 356                 return -EINVAL;
 357         }
 358         ret = ulp_mapper_flow_destroy(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR,
 359                                       flow_id);
 360         if (ret) {
 361                 BNXT_TF_DBG(ERR, "Failed to destroy flow.\n");
 362                 if (error)
 363                         rte_flow_error_set(error, -ret,
 364                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 365                                            "Failed to destroy flow.");
 366         }
 367         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 368
 369         return ret;
 370 }
 371
 372 /* Function to destroy the rte flows. */
 373 static int32_t
 374 bnxt_ulp_flow_flush(struct rte_eth_dev *eth_dev,
 375                     struct rte_flow_error *error)
 376 {
 377         struct bnxt_ulp_context *ulp_ctx;
 378         int32_t ret = 0;
 379         uint16_t func_id;
 380
 381         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 382         if (!ulp_ctx) {
 383                 return ret;
 384         }
 385
 386         /* Free the resources for the last device */
 387         if (ulp_ctx_deinit_allowed(ulp_ctx)) {
 388                 ret = ulp_flow_db_session_flow_flush(ulp_ctx);
 389         } else if (bnxt_ulp_cntxt_ptr2_flow_db_get(ulp_ctx)) {
 390                 ret = ulp_port_db_port_func_id_get(ulp_ctx,
 391                                                    eth_dev->data->port_id,
 392                                                    &func_id);
 393                 if (!ret)
 394                         ret = ulp_flow_db_function_flow_flush(ulp_ctx, func_id);
 395                 else
 396                         BNXT_TF_DBG(ERR, "convert port to func id failed\n");
 397         }
 398         if (ret)
 399                 rte_flow_error_set(error, ret,
 400                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 401                                    "Failed to flush flow.");
 402         return ret;
 403 }
 404
 405 /* Function to query the rte flows. */
 406 static int32_t
 407 bnxt_ulp_flow_query(struct rte_eth_dev *eth_dev,
 408                     struct rte_flow *flow,
 409                     const struct rte_flow_action *action,
 410                     void *data,
 411                     struct rte_flow_error *error)
 412 {
 413         int rc = 0;
 414         struct bnxt_ulp_context *ulp_ctx;
 415         struct rte_flow_query_count *count;
 416         uint32_t flow_id;
 417
 418         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 419         if (!ulp_ctx) {
 420                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 421                 rte_flow_error_set(error, EINVAL,
 422                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 423                                    "Failed to query flow.");
 424                 return -EINVAL;
 425         }
 426
 427         flow_id = (uint32_t)(uintptr_t)flow;
 428
 429         switch (action->type) {
 430         case RTE_FLOW_ACTION_TYPE_COUNT:
 431                 count = data;
 432                 rc = ulp_fc_mgr_query_count_get(ulp_ctx, flow_id, count);
 433                 if (rc) {
 434                         rte_flow_error_set(error, EINVAL,
 435                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 436                                            "Failed to query flow.");
 437                 }
 438                 break;
 439         default:
 440                 rte_flow_error_set(error, -rc, RTE_FLOW_ERROR_TYPE_ACTION_NUM,
 441                                    NULL, "Unsupported action item");
 442         }
 443
 444         return rc;
 445 }
 446
 447 const struct rte_flow_ops bnxt_ulp_rte_flow_ops = {
 448         .validate = bnxt_ulp_flow_validate,
 449         .create = bnxt_ulp_flow_create,
 450         .destroy = bnxt_ulp_flow_destroy,
 451         .flush = bnxt_ulp_flow_flush,
 452         .query = bnxt_ulp_flow_query,
 453         .isolate = NULL
 454 };