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         mapper_cparms.flow_type = BNXT_ULP_FDB_TYPE_REGULAR;
 151
 152         /* Get the function id */
 153         if (ulp_port_db_port_func_id_get(ulp_ctx,
 154                                          dev->data->port_id,
 155                                          &mapper_cparms.func_id)) {
 156                 BNXT_TF_DBG(ERR, "conversion of port to func id failed\n");
 157                 goto parse_error;
 158         }
 159         mapper_cparms.dir_attr = params.dir_attr;
 160
 161         /* Call the ulp mapper to create the flow in the hardware. */
 162         ret = ulp_mapper_flow_create(ulp_ctx, &mapper_cparms, &fid);
 163         if (!ret) {
 164                 flow_id = (struct rte_flow *)((uintptr_t)fid);
 165                 return flow_id;
 166         }
 167
 168 parse_error:
 169         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 170                            "Failed to create flow.");
 171         return NULL;
 172 }
 173
 174 /* Function to validate the rte flow. */
 175 static int
 176 bnxt_ulp_flow_validate(struct rte_eth_dev *dev,
 177                        const struct rte_flow_attr *attr,
 178                        const struct rte_flow_item pattern[],
 179                        const struct rte_flow_action actions[],
 180                        struct rte_flow_error *error)
 181 {
 182         struct ulp_rte_parser_params            params;
 183         uint32_t class_id, act_tmpl;
 184         int ret = BNXT_TF_RC_ERROR;
 185         struct bnxt_ulp_context *ulp_ctx;
 186
 187         if (bnxt_ulp_flow_validate_args(attr,
 188                                         pattern, actions,
 189                                         error) == BNXT_TF_RC_ERROR) {
 190                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 191                 goto parse_error;
 192         }
 193
 194         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 195         if (!ulp_ctx) {
 196                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 197                 goto parse_error;
 198         }
 199
 200         /* Initialize the parser params */
 201         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 202         params.ulp_ctx = ulp_ctx;
 203
 204         /* Set the flow attributes */
 205         bnxt_ulp_set_dir_attributes(&params, attr);
 206
 207         /* Parse the rte flow pattern */
 208         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 209         if (ret != BNXT_TF_RC_SUCCESS)
 210                 goto parse_error;
 211
 212         /* Parse the rte flow action */
 213         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 214         if (ret != BNXT_TF_RC_SUCCESS)
 215                 goto parse_error;
 216
 217         /* Perform the rte flow post process */
 218         ret = bnxt_ulp_rte_parser_post_process(&params);
 219         if (ret != BNXT_TF_RC_SUCCESS)
 220                 goto parse_error;
 221
 222         ret = ulp_matcher_pattern_match(&params, &class_id);
 223
 224         if (ret != BNXT_TF_RC_SUCCESS)
 225                 goto parse_error;
 226
 227         ret = ulp_matcher_action_match(&params, &act_tmpl);
 228         if (ret != BNXT_TF_RC_SUCCESS)
 229                 goto parse_error;
 230
 231         /* all good return success */
 232         return ret;
 233
 234 parse_error:
 235         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 236                            "Failed to validate flow.");
 237         return -EINVAL;
 238 }
 239
 240 /* Function to destroy the rte flow. */
 241 int
 242 bnxt_ulp_flow_destroy(struct rte_eth_dev *dev,
 243                       struct rte_flow *flow,
 244                       struct rte_flow_error *error)
 245 {
 246         int ret = 0;
 247         struct bnxt_ulp_context *ulp_ctx;
 248         uint32_t flow_id;
 249         uint16_t func_id;
 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                 if (error)
 255                         rte_flow_error_set(error, EINVAL,
 256                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 257                                            "Failed to destroy flow.");
 258                 return -EINVAL;
 259         }
 260
 261         flow_id = (uint32_t)(uintptr_t)flow;
 262
 263         if (ulp_port_db_port_func_id_get(ulp_ctx,
 264                                          dev->data->port_id,
 265                                          &func_id)) {
 266                 BNXT_TF_DBG(ERR, "conversion of port to func id failed\n");
 267                 if (error)
 268                         rte_flow_error_set(error, EINVAL,
 269                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 270                                            "Failed to destroy flow.");
 271                 return -EINVAL;
 272         }
 273
 274         if (ulp_flow_db_validate_flow_func(ulp_ctx, flow_id, func_id) ==
 275             false) {
 276                 BNXT_TF_DBG(ERR, "Incorrect device params\n");
 277                 if (error)
 278                         rte_flow_error_set(error, EINVAL,
 279                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 280                                            "Failed to destroy flow.");
 281                 return -EINVAL;
 282         }
 283
 284         ret = ulp_mapper_flow_destroy(ulp_ctx, BNXT_ULP_FDB_TYPE_REGULAR,
 285                                       flow_id);
 286         if (ret) {
 287                 BNXT_TF_DBG(ERR, "Failed to destroy flow.\n");
 288                 if (error)
 289                         rte_flow_error_set(error, -ret,
 290                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 291                                            "Failed to destroy flow.");
 292         }
 293
 294         return ret;
 295 }
 296
 297 /* Function to destroy the rte flows. */
 298 static int32_t
 299 bnxt_ulp_flow_flush(struct rte_eth_dev *eth_dev,
 300                     struct rte_flow_error *error)
 301 {
 302         struct bnxt_ulp_context *ulp_ctx;
 303         int32_t ret = 0;
 304         uint16_t func_id;
 305
 306         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 307         if (!ulp_ctx) {
 308                 return ret;
 309         }
 310
 311         /* Free the resources for the last device */
 312         if (ulp_ctx_deinit_allowed(ulp_ctx)) {
 313                 ret = ulp_flow_db_session_flow_flush(ulp_ctx);
 314         } else if (bnxt_ulp_cntxt_ptr2_flow_db_get(ulp_ctx)) {
 315                 ret = ulp_port_db_port_func_id_get(ulp_ctx,
 316                                                    eth_dev->data->port_id,
 317                                                    &func_id);
 318                 if (!ret)
 319                         ret = ulp_flow_db_function_flow_flush(ulp_ctx, func_id);
 320                 else
 321                         BNXT_TF_DBG(ERR, "convert port to func id failed\n");
 322         }
 323         if (ret)
 324                 rte_flow_error_set(error, ret,
 325                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 326                                    "Failed to flush flow.");
 327         return ret;
 328 }
 329
 330 /* Function to query the rte flows. */
 331 static int32_t
 332 bnxt_ulp_flow_query(struct rte_eth_dev *eth_dev,
 333                     struct rte_flow *flow,
 334                     const struct rte_flow_action *action,
 335                     void *data,
 336                     struct rte_flow_error *error)
 337 {
 338         int rc = 0;
 339         struct bnxt_ulp_context *ulp_ctx;
 340         struct rte_flow_query_count *count;
 341         uint32_t flow_id;
 342
 343         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 344         if (!ulp_ctx) {
 345                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 346                 rte_flow_error_set(error, EINVAL,
 347                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 348                                    "Failed to query flow.");
 349                 return -EINVAL;
 350         }
 351
 352         flow_id = (uint32_t)(uintptr_t)flow;
 353
 354         switch (action->type) {
 355         case RTE_FLOW_ACTION_TYPE_COUNT:
 356                 count = data;
 357                 rc = ulp_fc_mgr_query_count_get(ulp_ctx, flow_id, count);
 358                 if (rc) {
 359                         rte_flow_error_set(error, EINVAL,
 360                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 361                                            "Failed to query flow.");
 362                 }
 363                 break;
 364         default:
 365                 rte_flow_error_set(error, -rc, RTE_FLOW_ERROR_TYPE_ACTION_NUM,
 366                                    NULL, "Unsupported action item");
 367         }
 368
 369         return rc;
 370 }
 371
 372 const struct rte_flow_ops bnxt_ulp_rte_flow_ops = {
 373         .validate = bnxt_ulp_flow_validate,
 374         .create = bnxt_ulp_flow_create,
 375         .destroy = bnxt_ulp_flow_destroy,
 376         .flush = bnxt_ulp_flow_flush,
 377         .query = bnxt_ulp_flow_query,
 378         .isolate = NULL
 379 };