drivers/net/bnxt/tf_ulp/bnxt_ulp_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2020 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         /* Perform the rte flow post process */
 179         ret = bnxt_ulp_rte_parser_post_process(&params);
 180         if (ret == BNXT_TF_RC_ERROR)
 181                 goto free_fid;
 182         else if (ret == BNXT_TF_RC_FID)
 183                 goto return_fid;
 184
 185         ret = ulp_matcher_pattern_match(&params, &params.class_id);
 186         if (ret != BNXT_TF_RC_SUCCESS)
 187                 goto free_fid;
 188
 189         ret = ulp_matcher_action_match(&params, &params.act_tmpl);
 190         if (ret != BNXT_TF_RC_SUCCESS)
 191                 goto free_fid;
 192
 193         bnxt_ulp_init_mapper_params(&mapper_cparms, &params,
 194                                     BNXT_ULP_FDB_TYPE_REGULAR);
 195         /* Call the ulp mapper to create the flow in the hardware. */
 196         ret = ulp_mapper_flow_create(ulp_ctx, &mapper_cparms);
 197         if (ret)
 198                 goto free_fid;
 199
 200 return_fid:
 201         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 202
 203         flow_id = (struct rte_flow *)((uintptr_t)fid);
 204         return flow_id;
 205
 206 free_fid:
 207         ulp_flow_db_fid_free(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR, fid);
 208 release_lock:
 209         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 210 flow_error:
 211         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 212                            "Failed to create flow.");
 213         return NULL;
 214 }
 215
 216 /* Function to validate the rte flow. */
 217 static int
 218 bnxt_ulp_flow_validate(struct rte_eth_dev *dev,
 219                        const struct rte_flow_attr *attr,
 220                        const struct rte_flow_item pattern[],
 221                        const struct rte_flow_action actions[],
 222                        struct rte_flow_error *error)
 223 {
 224         struct ulp_rte_parser_params params;
 225         struct bnxt_ulp_context *ulp_ctx;
 226         uint32_t class_id, act_tmpl;
 227         int ret = BNXT_TF_RC_ERROR;
 228
 229         if (bnxt_ulp_flow_validate_args(attr,
 230                                         pattern, actions,
 231                                         error) == BNXT_TF_RC_ERROR) {
 232                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 233                 goto parse_error;
 234         }
 235
 236         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 237         if (!ulp_ctx) {
 238                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 239                 goto parse_error;
 240         }
 241
 242         /* Initialize the parser params */
 243         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 244         params.ulp_ctx = ulp_ctx;
 245
 246         /* Set the flow attributes */
 247         bnxt_ulp_set_dir_attributes(&params, attr);
 248
 249         /* Parse the rte flow pattern */
 250         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 251         if (ret != BNXT_TF_RC_SUCCESS)
 252                 goto parse_error;
 253
 254         /* Parse the rte flow action */
 255         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 256         if (ret != BNXT_TF_RC_SUCCESS)
 257                 goto parse_error;
 258
 259         /* Perform the rte flow post process */
 260         ret = bnxt_ulp_rte_parser_post_process(&params);
 261         if (ret == BNXT_TF_RC_ERROR)
 262                 goto parse_error;
 263         else if (ret == BNXT_TF_RC_FID)
 264                 return 0;
 265
 266         ret = ulp_matcher_pattern_match(&params, &class_id);
 267
 268         if (ret != BNXT_TF_RC_SUCCESS)
 269                 goto parse_error;
 270
 271         ret = ulp_matcher_action_match(&params, &act_tmpl);
 272         if (ret != BNXT_TF_RC_SUCCESS)
 273                 goto parse_error;
 274
 275         /* all good return success */
 276         return ret;
 277
 278 parse_error:
 279         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 280                            "Failed to validate flow.");
 281         return -EINVAL;
 282 }
 283
 284 /* Function to destroy the rte flow. */
 285 int
 286 bnxt_ulp_flow_destroy(struct rte_eth_dev *dev,
 287                       struct rte_flow *flow,
 288                       struct rte_flow_error *error)
 289 {
 290         struct bnxt_ulp_context *ulp_ctx;
 291         uint32_t flow_id;
 292         uint16_t func_id;
 293         int ret;
 294
 295         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 296         if (!ulp_ctx) {
 297                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 298                 if (error)
 299                         rte_flow_error_set(error, EINVAL,
 300                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 301                                            "Failed to destroy flow.");
 302                 return -EINVAL;
 303         }
 304
 305         flow_id = (uint32_t)(uintptr_t)flow;
 306
 307         if (ulp_port_db_port_func_id_get(ulp_ctx,
 308                                          dev->data->port_id,
 309                                          &func_id)) {
 310                 BNXT_TF_DBG(ERR, "conversion of port to func id failed\n");
 311                 if (error)
 312                         rte_flow_error_set(error, EINVAL,
 313                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 314                                            "Failed to destroy flow.");
 315                 return -EINVAL;
 316         }
 317
 318         if (ulp_flow_db_validate_flow_func(ulp_ctx, flow_id, func_id) ==
 319             false) {
 320                 BNXT_TF_DBG(ERR, "Incorrect device params\n");
 321                 if (error)
 322                         rte_flow_error_set(error, EINVAL,
 323                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 324                                            "Failed to destroy flow.");
 325                 return -EINVAL;
 326         }
 327
 328         if (bnxt_ulp_cntxt_acquire_fdb_lock(ulp_ctx)) {
 329                 BNXT_TF_DBG(ERR, "Flow db lock acquire failed\n");
 330                 return -EINVAL;
 331         }
 332         ret = ulp_mapper_flow_destroy(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR,
 333                                       flow_id);
 334         if (ret) {
 335                 BNXT_TF_DBG(ERR, "Failed to destroy flow.\n");
 336                 if (error)
 337                         rte_flow_error_set(error, -ret,
 338                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 339                                            "Failed to destroy flow.");
 340         }
 341         bnxt_ulp_cntxt_release_fdb_lock(ulp_ctx);
 342
 343         return ret;
 344 }
 345
 346 /* Function to destroy the rte flows. */
 347 static int32_t
 348 bnxt_ulp_flow_flush(struct rte_eth_dev *eth_dev,
 349                     struct rte_flow_error *error)
 350 {
 351         struct bnxt_ulp_context *ulp_ctx;
 352         int32_t ret = 0;
 353         uint16_t func_id;
 354
 355         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 356         if (!ulp_ctx) {
 357                 return ret;
 358         }
 359
 360         /* Free the resources for the last device */
 361         if (ulp_ctx_deinit_allowed(ulp_ctx)) {
 362                 ret = ulp_flow_db_session_flow_flush(ulp_ctx);
 363         } else if (bnxt_ulp_cntxt_ptr2_flow_db_get(ulp_ctx)) {
 364                 ret = ulp_port_db_port_func_id_get(ulp_ctx,
 365                                                    eth_dev->data->port_id,
 366                                                    &func_id);
 367                 if (!ret)
 368                         ret = ulp_flow_db_function_flow_flush(ulp_ctx, func_id);
 369                 else
 370                         BNXT_TF_DBG(ERR, "convert port to func id failed\n");
 371         }
 372         if (ret)
 373                 rte_flow_error_set(error, ret,
 374                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 375                                    "Failed to flush flow.");
 376         return ret;
 377 }
 378
 379 /* Function to query the rte flows. */
 380 static int32_t
 381 bnxt_ulp_flow_query(struct rte_eth_dev *eth_dev,
 382                     struct rte_flow *flow,
 383                     const struct rte_flow_action *action,
 384                     void *data,
 385                     struct rte_flow_error *error)
 386 {
 387         int rc = 0;
 388         struct bnxt_ulp_context *ulp_ctx;
 389         struct rte_flow_query_count *count;
 390         uint32_t flow_id;
 391
 392         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 393         if (!ulp_ctx) {
 394                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 395                 rte_flow_error_set(error, EINVAL,
 396                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 397                                    "Failed to query flow.");
 398                 return -EINVAL;
 399         }
 400
 401         flow_id = (uint32_t)(uintptr_t)flow;
 402
 403         switch (action->type) {
 404         case RTE_FLOW_ACTION_TYPE_COUNT:
 405                 count = data;
 406                 rc = ulp_fc_mgr_query_count_get(ulp_ctx, flow_id, count);
 407                 if (rc) {
 408                         rte_flow_error_set(error, EINVAL,
 409                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 410                                            "Failed to query flow.");
 411                 }
 412                 break;
 413         default:
 414                 rte_flow_error_set(error, -rc, RTE_FLOW_ERROR_TYPE_ACTION_NUM,
 415                                    NULL, "Unsupported action item");
 416         }
 417
 418         return rc;
 419 }
 420
 421 const struct rte_flow_ops bnxt_ulp_rte_flow_ops = {
 422         .validate = bnxt_ulp_flow_validate,
 423         .create = bnxt_ulp_flow_create,
 424         .destroy = bnxt_ulp_flow_destroy,
 425         .flush = bnxt_ulp_flow_flush,
 426         .query = bnxt_ulp_flow_query,
 427         .isolate = NULL
 428 };