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
 129         /* call the ulp mapper to create the flow in the hardware */
 130         ret = ulp_mapper_flow_create(ulp_ctx,
 131                                      &mapper_cparms,
 132                                      &fid);
 133         if (!ret) {
 134                 flow_id = (struct rte_flow *)((uintptr_t)fid);
 135                 return flow_id;
 136         }
 137
 138 parse_error:
 139         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 140                            "Failed to create flow.");
 141         return NULL;
 142 }
 143
 144 /* Function to validate the rte flow. */
 145 static int
 146 bnxt_ulp_flow_validate(struct rte_eth_dev *dev __rte_unused,
 147                        const struct rte_flow_attr *attr,
 148                        const struct rte_flow_item pattern[],
 149                        const struct rte_flow_action actions[],
 150                        struct rte_flow_error *error)
 151 {
 152         struct ulp_rte_parser_params            params;
 153         uint32_t class_id, act_tmpl;
 154         int ret;
 155
 156         if (bnxt_ulp_flow_validate_args(attr,
 157                                         pattern, actions,
 158                                         error) == BNXT_TF_RC_ERROR) {
 159                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 160                 return -EINVAL;
 161         }
 162
 163         /* Initialize the parser params */
 164         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 165
 166         if (attr->egress)
 167                 params.dir = ULP_DIR_EGRESS;
 168
 169         /* Parse the rte flow pattern */
 170         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 171         if (ret != BNXT_TF_RC_SUCCESS)
 172                 goto parse_error;
 173
 174         /* Parse the rte flow action */
 175         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 176         if (ret != BNXT_TF_RC_SUCCESS)
 177                 goto parse_error;
 178
 179         ret = ulp_matcher_pattern_match(&params, &class_id);
 180
 181         if (ret != BNXT_TF_RC_SUCCESS)
 182                 goto parse_error;
 183
 184         ret = ulp_matcher_action_match(&params, &act_tmpl);
 185         if (ret != BNXT_TF_RC_SUCCESS)
 186                 goto parse_error;
 187
 188         /* all good return success */
 189         return ret;
 190
 191 parse_error:
 192         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 193                            "Failed to validate flow.");
 194         return -EINVAL;
 195 }
 196
 197 /* Function to destroy the rte flow. */
 198 static int
 199 bnxt_ulp_flow_destroy(struct rte_eth_dev *dev,
 200                       struct rte_flow *flow,
 201                       struct rte_flow_error *error)
 202 {
 203         int ret = 0;
 204         struct bnxt_ulp_context *ulp_ctx;
 205         uint32_t fid;
 206
 207         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 208         if (!ulp_ctx) {
 209                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 210                 rte_flow_error_set(error, EINVAL,
 211                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 212                                    "Failed to destroy flow.");
 213                 return -EINVAL;
 214         }
 215
 216         fid = (uint32_t)(uintptr_t)flow;
 217
 218         ret = ulp_mapper_flow_destroy(ulp_ctx, fid);
 219         if (ret)
 220                 rte_flow_error_set(error, -ret,
 221                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 222                                    "Failed to destroy flow.");
 223
 224         return ret;
 225 }
 226
 227 /* Function to destroy the rte flows. */
 228 static int32_t
 229 bnxt_ulp_flow_flush(struct rte_eth_dev *eth_dev,
 230                     struct rte_flow_error *error)
 231 {
 232         struct bnxt_ulp_context *ulp_ctx;
 233         int32_t ret;
 234         struct bnxt *bp;
 235
 236         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 237         if (!ulp_ctx) {
 238                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 239                 rte_flow_error_set(error, EINVAL,
 240                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 241                                    "Failed to flush flow.");
 242                 return -EINVAL;
 243         }
 244         bp = eth_dev->data->dev_private;
 245
 246         /* Free the resources for the last device */
 247         if (!ulp_ctx_deinit_allowed(bp))
 248                 return 0;
 249
 250         ret = ulp_flow_db_flush_flows(ulp_ctx, BNXT_ULP_REGULAR_FLOW_TABLE);
 251         if (ret)
 252                 rte_flow_error_set(error, ret,
 253                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 254                                    "Failed to flush flow.");
 255         return ret;
 256 }
 257
 258 const struct rte_flow_ops bnxt_ulp_rte_flow_ops = {
 259         .validate = bnxt_ulp_flow_validate,
 260         .create = bnxt_ulp_flow_create,
 261         .destroy = bnxt_ulp_flow_destroy,
 262         .flush = bnxt_ulp_flow_flush,
 263         .query = NULL,
 264         .isolate = NULL
 265 };