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 <rte_malloc.h>
  13
  14 static int32_t
  15 bnxt_ulp_flow_validate_args(const struct rte_flow_attr *attr,
  16                             const struct rte_flow_item pattern[],
  17                             const struct rte_flow_action actions[],
  18                             struct rte_flow_error *error)
  19 {
  20         /* Perform the validation of the arguments for null */
  21         if (!error)
  22                 return BNXT_TF_RC_ERROR;
  23
  24         if (!pattern) {
  25                 rte_flow_error_set(error,
  26                                    EINVAL,
  27                                    RTE_FLOW_ERROR_TYPE_ITEM_NUM,
  28                                    NULL,
  29                                    "NULL pattern.");
  30                 return BNXT_TF_RC_ERROR;
  31         }
  32
  33         if (!actions) {
  34                 rte_flow_error_set(error,
  35                                    EINVAL,
  36                                    RTE_FLOW_ERROR_TYPE_ACTION_NUM,
  37                                    NULL,
  38                                    "NULL action.");
  39                 return BNXT_TF_RC_ERROR;
  40         }
  41
  42         if (!attr) {
  43                 rte_flow_error_set(error,
  44                                    EINVAL,
  45                                    RTE_FLOW_ERROR_TYPE_ATTR,
  46                                    NULL,
  47                                    "NULL attribute.");
  48                 return BNXT_TF_RC_ERROR;
  49         }
  50
  51         if (attr->egress && attr->ingress) {
  52                 rte_flow_error_set(error,
  53                                    EINVAL,
  54                                    RTE_FLOW_ERROR_TYPE_ATTR,
  55                                    attr,
  56                                    "EGRESS AND INGRESS UNSUPPORTED");
  57                 return BNXT_TF_RC_ERROR;
  58         }
  59         return BNXT_TF_RC_SUCCESS;
  60 }
  61
  62 /* Function to create the rte flow. */
  63 static struct rte_flow *
  64 bnxt_ulp_flow_create(struct rte_eth_dev *dev,
  65                      const struct rte_flow_attr *attr,
  66                      const struct rte_flow_item pattern[],
  67                      const struct rte_flow_action actions[],
  68                      struct rte_flow_error *error)
  69 {
  70         struct bnxt_ulp_mapper_create_parms mapper_cparms = { 0 };
  71         struct ulp_rte_parser_params params;
  72         struct bnxt_ulp_context *ulp_ctx = NULL;
  73         uint32_t class_id, act_tmpl;
  74         struct rte_flow *flow_id;
  75         uint32_t fid;
  76         int ret;
  77
  78         if (bnxt_ulp_flow_validate_args(attr,
  79                                         pattern, actions,
  80                                         error) == BNXT_TF_RC_ERROR) {
  81                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
  82                 return NULL;
  83         }
  84
  85         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
  86         if (!ulp_ctx) {
  87                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
  88                 return NULL;
  89         }
  90
  91         /* Initialize the parser params */
  92         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
  93
  94         if (attr->egress)
  95                 params.dir = ULP_DIR_EGRESS;
  96
  97         /* copy the device port id and direction for further processing */
  98         ULP_UTIL_CHF_IDX_WR(&params, BNXT_ULP_CHF_IDX_INCOMING_IF,
  99                             dev->data->port_id);
 100         ULP_UTIL_CHF_IDX_WR(&params, BNXT_ULP_CHF_IDX_DIRECTION, params.dir);
 101
 102         /* Parse the rte flow pattern */
 103         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 104         if (ret != BNXT_TF_RC_SUCCESS)
 105                 goto parse_error;
 106
 107         /* Parse the rte flow action */
 108         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 109         if (ret != BNXT_TF_RC_SUCCESS)
 110                 goto parse_error;
 111
 112         ret = ulp_matcher_pattern_match(&params, &class_id);
 113
 114         if (ret != BNXT_TF_RC_SUCCESS)
 115                 goto parse_error;
 116
 117         ret = ulp_matcher_action_match(&params, &act_tmpl);
 118         if (ret != BNXT_TF_RC_SUCCESS)
 119                 goto parse_error;
 120
 121         mapper_cparms.app_priority = attr->priority;
 122         mapper_cparms.hdr_bitmap = &params.hdr_bitmap;
 123         mapper_cparms.hdr_field = params.hdr_field;
 124         mapper_cparms.act = &params.act_bitmap;
 125         mapper_cparms.act_prop = &params.act_prop;
 126         mapper_cparms.class_tid = class_id;
 127         mapper_cparms.act_tid = act_tmpl;
 128         mapper_cparms.func_id = bnxt_get_fw_func_id(dev->data->port_id);
 129
 130         /* call the ulp mapper to create the flow in the hardware */
 131         ret = ulp_mapper_flow_create(ulp_ctx,
 132                                      &mapper_cparms,
 133                                      &fid);
 134         if (!ret) {
 135                 flow_id = (struct rte_flow *)((uintptr_t)fid);
 136                 return flow_id;
 137         }
 138
 139 parse_error:
 140         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 141                            "Failed to create flow.");
 142         return NULL;
 143 }
 144
 145 /* Function to validate the rte flow. */
 146 static int
 147 bnxt_ulp_flow_validate(struct rte_eth_dev *dev __rte_unused,
 148                        const struct rte_flow_attr *attr,
 149                        const struct rte_flow_item pattern[],
 150                        const struct rte_flow_action actions[],
 151                        struct rte_flow_error *error)
 152 {
 153         struct ulp_rte_parser_params            params;
 154         uint32_t class_id, act_tmpl;
 155         int ret;
 156
 157         if (bnxt_ulp_flow_validate_args(attr,
 158                                         pattern, actions,
 159                                         error) == BNXT_TF_RC_ERROR) {
 160                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 161                 return -EINVAL;
 162         }
 163
 164         /* Initialize the parser params */
 165         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 166
 167         if (attr->egress)
 168                 params.dir = ULP_DIR_EGRESS;
 169
 170         /* Parse the rte flow pattern */
 171         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 172         if (ret != BNXT_TF_RC_SUCCESS)
 173                 goto parse_error;
 174
 175         /* Parse the rte flow action */
 176         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 177         if (ret != BNXT_TF_RC_SUCCESS)
 178                 goto parse_error;
 179
 180         ret = ulp_matcher_pattern_match(&params, &class_id);
 181
 182         if (ret != BNXT_TF_RC_SUCCESS)
 183                 goto parse_error;
 184
 185         ret = ulp_matcher_action_match(&params, &act_tmpl);
 186         if (ret != BNXT_TF_RC_SUCCESS)
 187                 goto parse_error;
 188
 189         /* all good return success */
 190         return ret;
 191
 192 parse_error:
 193         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 194                            "Failed to validate flow.");
 195         return -EINVAL;
 196 }
 197
 198 /* Function to destroy the rte flow. */
 199 static int
 200 bnxt_ulp_flow_destroy(struct rte_eth_dev *dev,
 201                       struct rte_flow *flow,
 202                       struct rte_flow_error *error)
 203 {
 204         int ret = 0;
 205         struct bnxt_ulp_context *ulp_ctx;
 206         uint32_t flow_id;
 207         uint16_t func_id;
 208
 209         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 210         if (!ulp_ctx) {
 211                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 212                 rte_flow_error_set(error, EINVAL,
 213                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 214                                    "Failed to destroy flow.");
 215                 return -EINVAL;
 216         }
 217
 218         flow_id = (uint32_t)(uintptr_t)flow;
 219         func_id = bnxt_get_fw_func_id(dev->data->port_id);
 220
 221         if (ulp_flow_db_validate_flow_func(ulp_ctx, flow_id, func_id) ==
 222             false) {
 223                 BNXT_TF_DBG(ERR, "Incorrect device params\n");
 224                 rte_flow_error_set(error, EINVAL,
 225                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 226                                    "Failed to destroy flow.");
 227                 return -EINVAL;
 228         }
 229
 230         ret = ulp_mapper_flow_destroy(ulp_ctx, flow_id);
 231         if (ret)
 232                 rte_flow_error_set(error, -ret,
 233                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 234                                    "Failed to destroy flow.");
 235
 236         return ret;
 237 }
 238
 239 /* Function to destroy the rte flows. */
 240 static int32_t
 241 bnxt_ulp_flow_flush(struct rte_eth_dev *eth_dev,
 242                     struct rte_flow_error *error)
 243 {
 244         struct bnxt_ulp_context *ulp_ctx;
 245         int32_t ret = 0;
 246         struct bnxt *bp;
 247         uint16_t func_id;
 248
 249         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 250         if (!ulp_ctx) {
 251                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 252                 rte_flow_error_set(error, EINVAL,
 253                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 254                                    "Failed to flush flow.");
 255                 return -EINVAL;
 256         }
 257         bp = eth_dev->data->dev_private;
 258
 259         /* Free the resources for the last device */
 260         if (ulp_ctx_deinit_allowed(bp)) {
 261                 ret = ulp_flow_db_session_flow_flush(ulp_ctx);
 262         } else if (bnxt_ulp_cntxt_ptr2_flow_db_get(ulp_ctx)) {
 263                 func_id = bnxt_get_fw_func_id(eth_dev->data->port_id);
 264                 ret = ulp_flow_db_function_flow_flush(ulp_ctx, func_id);
 265         }
 266         if (ret)
 267                 rte_flow_error_set(error, ret,
 268                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 269                                    "Failed to flush flow.");
 270         return ret;
 271 }
 272
 273 const struct rte_flow_ops bnxt_ulp_rte_flow_ops = {
 274         .validate = bnxt_ulp_flow_validate,
 275         .create = bnxt_ulp_flow_create,
 276         .destroy = bnxt_ulp_flow_destroy,
 277         .flush = bnxt_ulp_flow_flush,
 278         .query = NULL,
 279         .isolate = NULL
 280 };