drivers/net/dpaa2/dpaa2_mux.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2018 NXP
   3  */
   4
   5 #include <sys/queue.h>
   6 #include <stdio.h>
   7 #include <errno.h>
   8 #include <stdint.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11 #include <stdarg.h>
  12
  13 #include <rte_ethdev.h>
  14 #include <rte_log.h>
  15 #include <rte_malloc.h>
  16 #include <rte_flow_driver.h>
  17 #include <rte_tailq.h>
  18
  19 #include <rte_fslmc.h>
  20 #include <fsl_dpdmux.h>
  21 #include <fsl_dpkg.h>
  22
  23 #include <dpaa2_ethdev.h>
  24 #include <dpaa2_pmd_logs.h>
  25
  26 struct dpaa2_dpdmux_dev {
  27         TAILQ_ENTRY(dpaa2_dpdmux_dev) next;
  28                 /**< Pointer to Next device instance */
  29         struct fsl_mc_io dpdmux;  /** handle to DPDMUX portal object */
  30         uint16_t token;
  31         uint32_t dpdmux_id; /*HW ID for DPDMUX object */
  32         uint8_t num_ifs;   /* Number of interfaces in DPDMUX */
  33 };
  34
  35 struct rte_flow {
  36         struct dpdmux_rule_cfg rule;
  37 };
  38
  39 TAILQ_HEAD(dpdmux_dev_list, dpaa2_dpdmux_dev);
  40 static struct dpdmux_dev_list dpdmux_dev_list =
  41         TAILQ_HEAD_INITIALIZER(dpdmux_dev_list); /*!< DPDMUX device list */
  42
  43 static struct dpaa2_dpdmux_dev *get_dpdmux_from_id(uint32_t dpdmux_id)
  44 {
  45         struct dpaa2_dpdmux_dev *dpdmux_dev = NULL;
  46
  47         /* Get DPBP dev handle from list using index */
  48         TAILQ_FOREACH(dpdmux_dev, &dpdmux_dev_list, next) {
  49                 if (dpdmux_dev->dpdmux_id == dpdmux_id)
  50                         break;
  51         }
  52
  53         return dpdmux_dev;
  54 }
  55
  56 struct rte_flow *
  57 rte_pmd_dpaa2_mux_flow_create(uint32_t dpdmux_id,
  58                               struct rte_flow_item *pattern[],
  59                               struct rte_flow_action *actions[])
  60 {
  61         struct dpaa2_dpdmux_dev *dpdmux_dev;
  62         struct dpkg_profile_cfg kg_cfg;
  63         const struct rte_flow_item_ipv4 *spec;
  64         const struct rte_flow_action_vf *vf_conf;
  65         struct dpdmux_cls_action dpdmux_action;
  66         struct rte_flow *flow = NULL;
  67         void *key_iova, *mask_iova, *key_cfg_iova = NULL;
  68         int ret;
  69
  70         if (pattern[0]->type != RTE_FLOW_ITEM_TYPE_IPV4) {
  71                 DPAA2_PMD_ERR("Not supported pattern type: %d",
  72                               pattern[0]->type);
  73                 return NULL;
  74         }
  75
  76         /* Find the DPDMUX from dpdmux_id in our list */
  77         dpdmux_dev = get_dpdmux_from_id(dpdmux_id);
  78         if (!dpdmux_dev) {
  79                 DPAA2_PMD_ERR("Invalid dpdmux_id: %d", dpdmux_id);
  80                 return NULL;
  81         }
  82
  83         key_cfg_iova = rte_zmalloc(NULL, DIST_PARAM_IOVA_SIZE,
  84                                    RTE_CACHE_LINE_SIZE);
  85         if (!key_cfg_iova) {
  86                 DPAA2_PMD_ERR("Unable to allocate flow-dist parameters");
  87                 return NULL;
  88         }
  89
  90         /* Currently taking only IP protocol as an extract type.
  91          * This can be exended to other fields using pattern->type.
  92          */
  93         memset(&kg_cfg, 0, sizeof(struct dpkg_profile_cfg));
  94         kg_cfg.extracts[0].extract.from_hdr.prot = NET_PROT_IP;
  95         kg_cfg.extracts[0].extract.from_hdr.field = NH_FLD_IP_PROTO;
  96         kg_cfg.extracts[0].type = DPKG_EXTRACT_FROM_HDR;
  97         kg_cfg.extracts[0].extract.from_hdr.type = DPKG_FULL_FIELD;
  98         kg_cfg.num_extracts = 1;
  99
 100         ret = dpkg_prepare_key_cfg(&kg_cfg, key_cfg_iova);
 101         if (ret) {
 102                 DPAA2_PMD_ERR("dpkg_prepare_key_cfg failed: err(%d)", ret);
 103                 goto creation_error;
 104         }
 105
 106         ret = dpdmux_set_custom_key(&dpdmux_dev->dpdmux, CMD_PRI_LOW,
 107                                     dpdmux_dev->token,
 108                         (uint64_t)(DPAA2_VADDR_TO_IOVA(key_cfg_iova)));
 109         if (ret) {
 110                 DPAA2_PMD_ERR("dpdmux_set_custom_key failed: err(%d)", ret);
 111                 goto creation_error;
 112         }
 113
 114         /* As now our key extract parameters are set, let us configure
 115          * the rule.
 116          */
 117         flow = rte_zmalloc(NULL, sizeof(struct rte_flow) +
 118                            (2 * DIST_PARAM_IOVA_SIZE), RTE_CACHE_LINE_SIZE);
 119         if (!flow) {
 120                 DPAA2_PMD_ERR(
 121                         "Memory allocation failure for rule configration\n");
 122                 goto creation_error;
 123         }
 124         key_iova = (void *)((size_t)flow + sizeof(struct rte_flow));
 125         mask_iova = (void *)((size_t)key_iova + DIST_PARAM_IOVA_SIZE);
 126
 127         spec = (const struct rte_flow_item_ipv4 *)pattern[0]->spec;
 128         memcpy(key_iova, (const void *)&spec->hdr.next_proto_id,
 129                sizeof(uint8_t));
 130         memcpy(mask_iova, pattern[0]->mask, sizeof(uint8_t));
 131
 132         flow->rule.key_iova = (uint64_t)(DPAA2_VADDR_TO_IOVA(key_iova));
 133         flow->rule.mask_iova = (uint64_t)(DPAA2_VADDR_TO_IOVA(mask_iova));
 134         flow->rule.key_size = sizeof(uint8_t);
 135
 136         vf_conf = (const struct rte_flow_action_vf *)(actions[0]->conf);
 137         if (vf_conf->id == 0 || vf_conf->id > dpdmux_dev->num_ifs) {
 138                 DPAA2_PMD_ERR("Invalid destination id\n");
 139                 goto creation_error;
 140         }
 141         dpdmux_action.dest_if = vf_conf->id;
 142
 143         ret = dpdmux_add_custom_cls_entry(&dpdmux_dev->dpdmux, CMD_PRI_LOW,
 144                                           dpdmux_dev->token, &flow->rule,
 145                                           &dpdmux_action);
 146         if (ret) {
 147                 DPAA2_PMD_ERR("dpdmux_add_custom_cls_entry failed: err(%d)",
 148                               ret);
 149                 goto creation_error;
 150         }
 151
 152         return flow;
 153
 154 creation_error:
 155         rte_free((void *)key_cfg_iova);
 156         rte_free((void *)flow);
 157         return NULL;
 158 }
 159
 160 static int
 161 dpaa2_create_dpdmux_device(int vdev_fd __rte_unused,
 162                            struct vfio_device_info *obj_info __rte_unused,
 163                            int dpdmux_id)
 164 {
 165         struct dpaa2_dpdmux_dev *dpdmux_dev;
 166         struct dpdmux_attr attr;
 167         int ret;
 168
 169         PMD_INIT_FUNC_TRACE();
 170
 171         /* Allocate DPAA2 dpdmux handle */
 172         dpdmux_dev = rte_malloc(NULL, sizeof(struct dpaa2_dpdmux_dev), 0);
 173         if (!dpdmux_dev) {
 174                 DPAA2_PMD_ERR("Memory allocation failed for DPDMUX Device");
 175                 return -1;
 176         }
 177
 178         /* Open the dpdmux object */
 179         dpdmux_dev->dpdmux.regs = rte_mcp_ptr_list[MC_PORTAL_INDEX];
 180         ret = dpdmux_open(&dpdmux_dev->dpdmux, CMD_PRI_LOW, dpdmux_id,
 181                           &dpdmux_dev->token);
 182         if (ret) {
 183                 DPAA2_PMD_ERR("Unable to open dpdmux object: err(%d)", ret);
 184                 goto init_err;
 185         }
 186
 187         ret = dpdmux_get_attributes(&dpdmux_dev->dpdmux, CMD_PRI_LOW,
 188                                     dpdmux_dev->token, &attr);
 189         if (ret) {
 190                 DPAA2_PMD_ERR("Unable to get dpdmux attr: err(%d)", ret);
 191                 goto init_err;
 192         }
 193
 194         ret = dpdmux_if_set_default(&dpdmux_dev->dpdmux, CMD_PRI_LOW,
 195                                     dpdmux_dev->token, 1);
 196         if (ret) {
 197                 DPAA2_PMD_ERR("setting default interface failed in %s",
 198                               __func__);
 199                 goto init_err;
 200         }
 201
 202         dpdmux_dev->dpdmux_id = dpdmux_id;
 203         dpdmux_dev->num_ifs = attr.num_ifs;
 204
 205         TAILQ_INSERT_TAIL(&dpdmux_dev_list, dpdmux_dev, next);
 206
 207         return 0;
 208
 209 init_err:
 210         if (dpdmux_dev)
 211                 rte_free(dpdmux_dev);
 212
 213         return -1;
 214 }
 215
 216 static struct rte_dpaa2_object rte_dpaa2_dpdmux_obj = {
 217         .dev_type = DPAA2_MUX,
 218         .create = dpaa2_create_dpdmux_device,
 219 };
 220
 221 RTE_PMD_REGISTER_DPAA2_OBJECT(dpdmux, rte_dpaa2_dpdmux_obj);