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