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;
  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         params.ulp_ctx = ulp_ctx;
  94
  95         if (attr->egress)
  96                 params.dir = ULP_DIR_EGRESS;
  97
  98         /* copy the device port id and direction for further processing */
  99         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_INCOMING_IF,
 100                             dev->data->port_id);
 101         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_DIRECTION, params.dir);
 102         ULP_COMP_FLD_IDX_WR(&params, BNXT_ULP_CF_IDX_SVIF_FLAG,
 103                             BNXT_ULP_INVALID_SVIF_VAL);
 104
 105         /* Parse the rte flow pattern */
 106         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 107         if (ret != BNXT_TF_RC_SUCCESS)
 108                 goto parse_error;
 109
 110         /* Parse the rte flow action */
 111         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 112         if (ret != BNXT_TF_RC_SUCCESS)
 113                 goto parse_error;
 114
 115         ret = ulp_matcher_pattern_match(&params, &class_id);
 116         if (ret != BNXT_TF_RC_SUCCESS)
 117                 goto parse_error;
 118
 119         ret = ulp_matcher_action_match(&params, &act_tmpl);
 120         if (ret != BNXT_TF_RC_SUCCESS)
 121                 goto parse_error;
 122
 123         mapper_cparms.app_priority = attr->priority;
 124         mapper_cparms.hdr_bitmap = &params.hdr_bitmap;
 125         mapper_cparms.hdr_field = params.hdr_field;
 126         mapper_cparms.comp_fld = params.comp_fld;
 127         mapper_cparms.act = &params.act_bitmap;
 128         mapper_cparms.act_prop = &params.act_prop;
 129         mapper_cparms.class_tid = class_id;
 130         mapper_cparms.act_tid = act_tmpl;
 131         mapper_cparms.func_id = bnxt_get_fw_func_id(dev->data->port_id);
 132         mapper_cparms.dir = params.dir;
 133
 134         /* Call the ulp mapper to create the flow in the hardware. */
 135         ret = ulp_mapper_flow_create(ulp_ctx, &mapper_cparms, &fid);
 136         if (!ret) {
 137                 flow_id = (struct rte_flow *)((uintptr_t)fid);
 138                 return flow_id;
 139         }
 140
 141 parse_error:
 142         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 143                            "Failed to create flow.");
 144         return NULL;
 145 }
 146
 147 /* Function to validate the rte flow. */
 148 static int
 149 bnxt_ulp_flow_validate(struct rte_eth_dev *dev,
 150                        const struct rte_flow_attr *attr,
 151                        const struct rte_flow_item pattern[],
 152                        const struct rte_flow_action actions[],
 153                        struct rte_flow_error *error)
 154 {
 155         struct ulp_rte_parser_params            params;
 156         uint32_t class_id, act_tmpl;
 157         int ret;
 158         struct bnxt_ulp_context *ulp_ctx;
 159
 160         if (bnxt_ulp_flow_validate_args(attr,
 161                                         pattern, actions,
 162                                         error) == BNXT_TF_RC_ERROR) {
 163                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 164                 return -EINVAL;
 165         }
 166
 167         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 168         if (!ulp_ctx) {
 169                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 170                 return -EINVAL;
 171         }
 172
 173         /* Initialize the parser params */
 174         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 175         params.ulp_ctx = ulp_ctx;
 176
 177         if (attr->egress)
 178                 params.dir = ULP_DIR_EGRESS;
 179
 180         /* Parse the rte flow pattern */
 181         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 182         if (ret != BNXT_TF_RC_SUCCESS)
 183                 goto parse_error;
 184
 185         /* Parse the rte flow action */
 186         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 187         if (ret != BNXT_TF_RC_SUCCESS)
 188                 goto parse_error;
 189
 190         ret = ulp_matcher_pattern_match(&params, &class_id);
 191
 192         if (ret != BNXT_TF_RC_SUCCESS)
 193                 goto parse_error;
 194
 195         ret = ulp_matcher_action_match(&params, &act_tmpl);
 196         if (ret != BNXT_TF_RC_SUCCESS)
 197                 goto parse_error;
 198
 199         /* all good return success */
 200         return ret;
 201
 202 parse_error:
 203         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 204                            "Failed to validate flow.");
 205         return -EINVAL;
 206 }
 207
 208 /* Function to destroy the rte flow. */
 209 static int
 210 bnxt_ulp_flow_destroy(struct rte_eth_dev *dev,
 211                       struct rte_flow *flow,
 212                       struct rte_flow_error *error)
 213 {
 214         int ret = 0;
 215         struct bnxt_ulp_context *ulp_ctx;
 216         uint32_t flow_id;
 217         uint16_t func_id;
 218
 219         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 220         if (!ulp_ctx) {
 221                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 222                 rte_flow_error_set(error, EINVAL,
 223                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 224                                    "Failed to destroy flow.");
 225                 return -EINVAL;
 226         }
 227
 228         flow_id = (uint32_t)(uintptr_t)flow;
 229         func_id = bnxt_get_fw_func_id(dev->data->port_id);
 230
 231         if (ulp_flow_db_validate_flow_func(ulp_ctx, flow_id, func_id) ==
 232             false) {
 233                 BNXT_TF_DBG(ERR, "Incorrect device params\n");
 234                 rte_flow_error_set(error, EINVAL,
 235                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 236                                    "Failed to destroy flow.");
 237                 return -EINVAL;
 238         }
 239
 240         ret = ulp_mapper_flow_destroy(ulp_ctx, flow_id);
 241         if (ret)
 242                 rte_flow_error_set(error, -ret,
 243                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 244                                    "Failed to destroy flow.");
 245
 246         return ret;
 247 }
 248
 249 /* Function to destroy the rte flows. */
 250 static int32_t
 251 bnxt_ulp_flow_flush(struct rte_eth_dev *eth_dev,
 252                     struct rte_flow_error *error)
 253 {
 254         struct bnxt_ulp_context *ulp_ctx;
 255         int32_t ret = 0;
 256         struct bnxt *bp;
 257         uint16_t func_id;
 258
 259         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 260         if (!ulp_ctx) {
 261                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 262                 rte_flow_error_set(error, EINVAL,
 263                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 264                                    "Failed to flush flow.");
 265                 return -EINVAL;
 266         }
 267         bp = eth_dev->data->dev_private;
 268
 269         /* Free the resources for the last device */
 270         if (ulp_ctx_deinit_allowed(bp)) {
 271                 ret = ulp_flow_db_session_flow_flush(ulp_ctx);
 272         } else if (bnxt_ulp_cntxt_ptr2_flow_db_get(ulp_ctx)) {
 273                 func_id = bnxt_get_fw_func_id(eth_dev->data->port_id);
 274                 ret = ulp_flow_db_function_flow_flush(ulp_ctx, func_id);
 275         }
 276         if (ret)
 277                 rte_flow_error_set(error, ret,
 278                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 279                                    "Failed to flush flow.");
 280         return ret;
 281 }
 282
 283 const struct rte_flow_ops bnxt_ulp_rte_flow_ops = {
 284         .validate = bnxt_ulp_flow_validate,
 285         .create = bnxt_ulp_flow_create,
 286         .destroy = bnxt_ulp_flow_destroy,
 287         .flush = bnxt_ulp_flow_flush,
 288         .query = NULL,
 289         .isolate = NULL
 290 };