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 ulp_rte_hdr_bitmap hdr_bitmap;
  71         struct ulp_rte_hdr_field hdr_field[BNXT_ULP_PROTO_HDR_MAX];
  72         struct ulp_rte_act_bitmap act_bitmap;
  73         struct ulp_rte_act_prop act_prop;
  74         enum ulp_direction_type dir = ULP_DIR_INGRESS;
  75         struct bnxt_ulp_context *ulp_ctx = NULL;
  76         uint32_t class_id, act_tmpl;
  77         struct rte_flow *flow_id;
  78         uint32_t app_priority;
  79         uint32_t fid;
  80         uint8_t *buffer;
  81         uint32_t vnic;
  82         int ret;
  83
  84         if (bnxt_ulp_flow_validate_args(attr,
  85                                         pattern, actions,
  86                                         error) == BNXT_TF_RC_ERROR) {
  87                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
  88                 return NULL;
  89         }
  90
  91         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
  92         if (!ulp_ctx) {
  93                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
  94                 return NULL;
  95         }
  96
  97         /* clear the header bitmap and field structure */
  98         memset(&hdr_bitmap, 0, sizeof(struct ulp_rte_hdr_bitmap));
  99         memset(hdr_field, 0, sizeof(hdr_field));
 100         memset(&act_bitmap, 0, sizeof(act_bitmap));
 101         memset(&act_prop, 0, sizeof(act_prop));
 102
 103         if (attr->egress)
 104                 dir = ULP_DIR_EGRESS;
 105
 106         /* copy the device port id and direction in svif for further process */
 107         buffer = hdr_field[BNXT_ULP_HDR_FIELD_SVIF_INDEX].spec;
 108         rte_memcpy(buffer, &dev->data->port_id, sizeof(uint16_t));
 109         rte_memcpy(buffer + sizeof(uint16_t), &dir, sizeof(uint32_t));
 110
 111         /* Set the implicit vnic in the action property */
 112         vnic = (uint32_t)bnxt_get_vnic_id(dev->data->port_id);
 113         vnic = htonl(vnic);
 114         rte_memcpy(&act_prop.act_details[BNXT_ULP_ACT_PROP_IDX_VNIC],
 115                    &vnic, BNXT_ULP_ACT_PROP_SZ_VNIC);
 116
 117         /* Parse the rte flow pattern */
 118         ret = bnxt_ulp_rte_parser_hdr_parse(pattern,
 119                                             &hdr_bitmap,
 120                                             hdr_field);
 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,
 126                                             &act_bitmap,
 127                                             &act_prop);
 128         if (ret != BNXT_TF_RC_SUCCESS)
 129                 goto parse_error;
 130
 131         ret = ulp_matcher_pattern_match(dir, &hdr_bitmap, hdr_field,
 132                                         &act_bitmap, &class_id);
 133
 134         if (ret != BNXT_TF_RC_SUCCESS)
 135                 goto parse_error;
 136
 137         ret = ulp_matcher_action_match(dir, &act_bitmap, &act_tmpl);
 138         if (ret != BNXT_TF_RC_SUCCESS)
 139                 goto parse_error;
 140
 141         app_priority = attr->priority;
 142         /* call the ulp mapper to create the flow in the hardware */
 143         ret = ulp_mapper_flow_create(ulp_ctx,
 144                                      app_priority,
 145                                      &hdr_bitmap,
 146                                      hdr_field,
 147                                      &act_bitmap,
 148                                      &act_prop,
 149                                      class_id,
 150                                      act_tmpl,
 151                                      &fid);
 152         if (!ret) {
 153                 flow_id = (struct rte_flow *)((uintptr_t)fid);
 154                 return flow_id;
 155         }
 156
 157 parse_error:
 158         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 159                            "Failed to create flow.");
 160         return NULL;
 161 }
 162
 163 /* Function to validate the rte flow. */
 164 static int
 165 bnxt_ulp_flow_validate(struct rte_eth_dev *dev __rte_unused,
 166                        const struct rte_flow_attr *attr,
 167                        const struct rte_flow_item pattern[],
 168                        const struct rte_flow_action actions[],
 169                        struct rte_flow_error *error)
 170 {
 171         struct ulp_rte_hdr_bitmap hdr_bitmap;
 172         struct ulp_rte_hdr_field hdr_field[BNXT_ULP_PROTO_HDR_MAX];
 173         struct ulp_rte_act_bitmap act_bitmap;
 174         struct ulp_rte_act_prop act_prop;
 175         enum ulp_direction_type dir = ULP_DIR_INGRESS;
 176         uint32_t class_id, act_tmpl;
 177         int ret;
 178
 179         if (bnxt_ulp_flow_validate_args(attr,
 180                                         pattern, actions,
 181                                         error) == BNXT_TF_RC_ERROR) {
 182                 BNXT_TF_DBG(ERR, "Invalid arguments being passed\n");
 183                 return -EINVAL;
 184         }
 185
 186         /* clear the header bitmap and field structure */
 187         memset(&hdr_bitmap, 0, sizeof(struct ulp_rte_hdr_bitmap));
 188         memset(hdr_field, 0, sizeof(hdr_field));
 189         memset(&act_bitmap, 0, sizeof(act_bitmap));
 190         memset(&act_prop, 0, sizeof(act_prop));
 191
 192         /* Parse the rte flow pattern */
 193         ret = bnxt_ulp_rte_parser_hdr_parse(pattern,
 194                                             &hdr_bitmap,
 195                                             hdr_field);
 196         if (ret != BNXT_TF_RC_SUCCESS)
 197                 goto parse_error;
 198
 199         /* Parse the rte flow action */
 200         ret = bnxt_ulp_rte_parser_act_parse(actions,
 201                                             &act_bitmap,
 202                                             &act_prop);
 203         if (ret != BNXT_TF_RC_SUCCESS)
 204                 goto parse_error;
 205
 206         if (attr->egress)
 207                 dir = ULP_DIR_EGRESS;
 208
 209         ret = ulp_matcher_pattern_match(dir, &hdr_bitmap, hdr_field,
 210                                         &act_bitmap, &class_id);
 211
 212         if (ret != BNXT_TF_RC_SUCCESS)
 213                 goto parse_error;
 214
 215         ret = ulp_matcher_action_match(dir, &act_bitmap, &act_tmpl);
 216         if (ret != BNXT_TF_RC_SUCCESS)
 217                 goto parse_error;
 218
 219         /* all good return success */
 220         return ret;
 221
 222 parse_error:
 223         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 224                            "Failed to validate flow.");
 225         return -EINVAL;
 226 }
 227
 228 /* Function to destroy the rte flow. */
 229 static int
 230 bnxt_ulp_flow_destroy(struct rte_eth_dev *dev,
 231                       struct rte_flow *flow,
 232                       struct rte_flow_error *error)
 233 {
 234         int ret = 0;
 235         struct bnxt_ulp_context *ulp_ctx;
 236         uint32_t fid;
 237
 238         ulp_ctx = bnxt_ulp_eth_dev_ptr2_cntxt_get(dev);
 239         if (!ulp_ctx) {
 240                 BNXT_TF_DBG(ERR, "ULP context is not initialized\n");
 241                 rte_flow_error_set(error, EINVAL,
 242                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 243                                    "Failed to destroy flow.");
 244                 return -EINVAL;
 245         }
 246
 247         fid = (uint32_t)(uintptr_t)flow;
 248
 249         ret = ulp_mapper_flow_destroy(ulp_ctx, fid);
 250         if (ret)
 251                 rte_flow_error_set(error, -ret,
 252                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 253                                    "Failed to destroy flow.");
 254
 255         return ret;
 256 }
 257
 258 /* Function to destroy the rte flows. */
 259 static int32_t
 260 bnxt_ulp_flow_flush(struct rte_eth_dev *eth_dev,
 261                     struct rte_flow_error *error)
 262 {
 263         struct bnxt_ulp_context *ulp_ctx;
 264         int32_t ret;
 265         struct bnxt *bp;
 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                 return 0;
 280
 281         ret = ulp_flow_db_flush_flows(ulp_ctx, BNXT_ULP_REGULAR_FLOW_TABLE);
 282         if (ret)
 283                 rte_flow_error_set(error, ret,
 284                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 285                                    "Failed to flush flow.");
 286         return ret;
 287 }
 288
 289 const struct rte_flow_ops bnxt_ulp_rte_flow_ops = {
 290         .validate = bnxt_ulp_flow_validate,
 291         .create = bnxt_ulp_flow_create,
 292         .destroy = bnxt_ulp_flow_destroy,
 293         .flush = bnxt_ulp_flow_flush,
 294         .query = NULL,
 295         .isolate = NULL
 296 };