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                                                     BNXT_ULP_INTF_TYPE_INVALID);
 133         mapper_cparms.dir = params.dir;
 134
 135         /* Call the ulp mapper to create the flow in the hardware. */
 136         ret = ulp_mapper_flow_create(ulp_ctx, &mapper_cparms, &fid);
 137         if (!ret) {
 138                 flow_id = (struct rte_flow *)((uintptr_t)fid);
 139                 return flow_id;
 140         }
 141
 142 parse_error:
 143         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 144                            "Failed to create flow.");
 145         return NULL;
 146 }
 147
 148 /* Function to validate the rte flow. */
 149 static int
 150 bnxt_ulp_flow_validate(struct rte_eth_dev *dev,
 151                        const struct rte_flow_attr *attr,
 152                        const struct rte_flow_item pattern[],
 153                        const struct rte_flow_action actions[],
 154                        struct rte_flow_error *error)
 155 {
 156         struct ulp_rte_parser_params            params;
 157         uint32_t class_id, act_tmpl;
 158         int ret;
 159         struct bnxt_ulp_context *ulp_ctx;
 160
 161         if (bnxt_ulp_flow_validate_args(attr,
 162                                         pattern, actions,
 163                                         error) == BNXT_TF_RC_ERROR) {
 164                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 165                 return -EINVAL;
 166         }
 167
 168         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 169         if (!ulp_ctx) {
 170                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 171                 return -EINVAL;
 172         }
 173
 174         /* Initialize the parser params */
 175         memset(&params, 0, sizeof(struct ulp_rte_parser_params));
 176         params.ulp_ctx = ulp_ctx;
 177
 178         if (attr->egress)
 179                 params.dir = ULP_DIR_EGRESS;
 180
 181         /* Parse the rte flow pattern */
 182         ret = bnxt_ulp_rte_parser_hdr_parse(pattern, &params);
 183         if (ret != BNXT_TF_RC_SUCCESS)
 184                 goto parse_error;
 185
 186         /* Parse the rte flow action */
 187         ret = bnxt_ulp_rte_parser_act_parse(actions, &params);
 188         if (ret != BNXT_TF_RC_SUCCESS)
 189                 goto parse_error;
 190
 191         ret = ulp_matcher_pattern_match(&params, &class_id);
 192
 193         if (ret != BNXT_TF_RC_SUCCESS)
 194                 goto parse_error;
 195
 196         ret = ulp_matcher_action_match(&params, &act_tmpl);
 197         if (ret != BNXT_TF_RC_SUCCESS)
 198                 goto parse_error;
 199
 200         /* all good return success */
 201         return ret;
 202
 203 parse_error:
 204         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 205                            "Failed to validate flow.");
 206         return -EINVAL;
 207 }
 208
 209 /* Function to destroy the rte flow. */
 210 int
 211 bnxt_ulp_flow_destroy(struct rte_eth_dev *dev,
 212                       struct rte_flow *flow,
 213                       struct rte_flow_error *error)
 214 {
 215         int ret = 0;
 216         struct bnxt_ulp_context *ulp_ctx;
 217         uint32_t flow_id;
 218         uint16_t func_id;
 219
 220         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 221         if (!ulp_ctx) {
 222                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 223                 if (error)
 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         flow_id = (uint32_t)(uintptr_t)flow;
 231         func_id = bnxt_get_fw_func_id(dev->data->port_id,
 232                                       BNXT_ULP_INTF_TYPE_INVALID);
 233
 234         if (ulp_flow_db_validate_flow_func(ulp_ctx, flow_id, func_id) ==
 235             false) {
 236                 BNXT_TF_DBG(ERR, "Incorrect device params\n");
 237                 if (error)
 238                         rte_flow_error_set(error, EINVAL,
 239                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 240                                            "Failed to destroy flow.");
 241                 return -EINVAL;
 242         }
 243
 244         ret = ulp_mapper_flow_destroy(ulp_ctx, flow_id,
 245                                       BNXT_ULP_REGULAR_FLOW_TABLE);
 246         if (ret) {
 247                 BNXT_TF_DBG(ERR, "Failed to destroy flow.\n");
 248                 if (error)
 249                         rte_flow_error_set(error, -ret,
 250                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 251                                            "Failed to destroy flow.");
 252         }
 253
 254         return ret;
 255 }
 256
 257 /* Function to destroy the rte flows. */
 258 static int32_t
 259 bnxt_ulp_flow_flush(struct rte_eth_dev *eth_dev,
 260                     struct rte_flow_error *error)
 261 {
 262         struct bnxt_ulp_context *ulp_ctx;
 263         int32_t ret = 0;
 264         struct bnxt *bp;
 265         uint16_t func_id;
 266
 267         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(eth_dev);
 268         if (!ulp_ctx) {
 269                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 270                 rte_flow_error_set(error, EINVAL,
 271                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 272                                    "Failed to flush flow.");
 273                 return -EINVAL;
 274         }
 275         bp = eth_dev->data->dev_private;
 276
 277         /* Free the resources for the last device */
 278         if (ulp_ctx_deinit_allowed(bp)) {
 279                 ret = ulp_flow_db_session_flow_flush(ulp_ctx);
 280         } else if (bnxt_ulp_cntxt_ptr2_flow_db_get(ulp_ctx)) {
 281                 func_id = bnxt_get_fw_func_id(eth_dev->data->port_id,
 282                                               BNXT_ULP_INTF_TYPE_INVALID);
 283                 ret = ulp_flow_db_function_flow_flush(ulp_ctx, func_id);
 284         }
 285         if (ret)
 286                 rte_flow_error_set(error, ret,
 287                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 288                                    "Failed to flush flow.");
 289         return ret;
 290 }
 291
 292 const struct rte_flow_ops bnxt_ulp_rte_flow_ops = {
 293         .validate = bnxt_ulp_flow_validate,
 294         .create = bnxt_ulp_flow_create,
 295         .destroy = bnxt_ulp_flow_destroy,
 296         .flush = bnxt_ulp_flow_flush,
 297         .query = NULL,
 298         .isolate = NULL
 299 };