drivers/net/i40e/i40e_tm.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <rte_malloc.h>
  35
  36 #include "base/i40e_prototype.h"
  37 #include "i40e_ethdev.h"
  38
  39 static int i40e_tm_capabilities_get(struct rte_eth_dev *dev,
  40                                     struct rte_tm_capabilities *cap,
  41                                     struct rte_tm_error *error);
  42 static int i40e_shaper_profile_add(struct rte_eth_dev *dev,
  43                                    uint32_t shaper_profile_id,
  44                                    struct rte_tm_shaper_params *profile,
  45                                    struct rte_tm_error *error);
  46 static int i40e_shaper_profile_del(struct rte_eth_dev *dev,
  47                                    uint32_t shaper_profile_id,
  48                                    struct rte_tm_error *error);
  49
  50 const struct rte_tm_ops i40e_tm_ops = {
  51         .capabilities_get = i40e_tm_capabilities_get,
  52         .shaper_profile_add = i40e_shaper_profile_add,
  53         .shaper_profile_delete = i40e_shaper_profile_del,
  54 };
  55
  56 int
  57 i40e_tm_ops_get(struct rte_eth_dev *dev __rte_unused,
  58                 void *arg)
  59 {
  60         if (!arg)
  61                 return -EINVAL;
  62
  63         *(const void **)arg = &i40e_tm_ops;
  64
  65         return 0;
  66 }
  67
  68 void
  69 i40e_tm_conf_init(struct rte_eth_dev *dev)
  70 {
  71         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
  72
  73         /* initialize shaper profile list */
  74         TAILQ_INIT(&pf->tm_conf.shaper_profile_list);
  75 }
  76
  77 void
  78 i40e_tm_conf_uninit(struct rte_eth_dev *dev)
  79 {
  80         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
  81         struct i40e_tm_shaper_profile *shaper_profile;
  82
  83         /* Remove all shaper profiles */
  84         while ((shaper_profile =
  85                TAILQ_FIRST(&pf->tm_conf.shaper_profile_list))) {
  86                 TAILQ_REMOVE(&pf->tm_conf.shaper_profile_list,
  87                              shaper_profile, node);
  88                 rte_free(shaper_profile);
  89         }
  90 }
  91
  92 static inline uint16_t
  93 i40e_tc_nb_get(struct rte_eth_dev *dev)
  94 {
  95         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
  96         struct i40e_vsi *main_vsi = pf->main_vsi;
  97         uint16_t sum = 0;
  98         int i;
  99
 100         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 101                 if (main_vsi->enabled_tc & BIT_ULL(i))
 102                         sum++;
 103         }
 104
 105         return sum;
 106 }
 107
 108 static int
 109 i40e_tm_capabilities_get(struct rte_eth_dev *dev,
 110                          struct rte_tm_capabilities *cap,
 111                          struct rte_tm_error *error)
 112 {
 113         struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 114         uint16_t tc_nb = i40e_tc_nb_get(dev);
 115
 116         if (!cap || !error)
 117                 return -EINVAL;
 118
 119         if (tc_nb > hw->func_caps.num_tx_qp)
 120                 return -EINVAL;
 121
 122         error->type = RTE_TM_ERROR_TYPE_NONE;
 123
 124         /* set all the parameters to 0 first. */
 125         memset(cap, 0, sizeof(struct rte_tm_capabilities));
 126
 127         /**
 128          * support port + TCs + queues
 129          * here shows the max capability not the current configuration.
 130          */
 131         cap->n_nodes_max = 1 + I40E_MAX_TRAFFIC_CLASS + hw->func_caps.num_tx_qp;
 132         cap->n_levels_max = 3; /* port, TC, queue */
 133         cap->non_leaf_nodes_identical = 1;
 134         cap->leaf_nodes_identical = 1;
 135         cap->shaper_n_max = cap->n_nodes_max;
 136         cap->shaper_private_n_max = cap->n_nodes_max;
 137         cap->shaper_private_dual_rate_n_max = 0;
 138         cap->shaper_private_rate_min = 0;
 139         /* 40Gbps -> 5GBps */
 140         cap->shaper_private_rate_max = 5000000000ull;
 141         cap->shaper_shared_n_max = 0;
 142         cap->shaper_shared_n_nodes_per_shaper_max = 0;
 143         cap->shaper_shared_n_shapers_per_node_max = 0;
 144         cap->shaper_shared_dual_rate_n_max = 0;
 145         cap->shaper_shared_rate_min = 0;
 146         cap->shaper_shared_rate_max = 0;
 147         cap->sched_n_children_max = hw->func_caps.num_tx_qp;
 148         /**
 149          * HW supports SP. But no plan to support it now.
 150          * So, all the nodes should have the same priority.
 151          */
 152         cap->sched_sp_n_priorities_max = 1;
 153         cap->sched_wfq_n_children_per_group_max = 0;
 154         cap->sched_wfq_n_groups_max = 0;
 155         /**
 156          * SW only supports fair round robin now.
 157          * So, all the nodes should have the same weight.
 158          */
 159         cap->sched_wfq_weight_max = 1;
 160         cap->cman_head_drop_supported = 0;
 161         cap->dynamic_update_mask = 0;
 162         cap->shaper_pkt_length_adjust_min = RTE_TM_ETH_FRAMING_OVERHEAD;
 163         cap->shaper_pkt_length_adjust_max = RTE_TM_ETH_FRAMING_OVERHEAD_FCS;
 164         cap->cman_wred_context_n_max = 0;
 165         cap->cman_wred_context_private_n_max = 0;
 166         cap->cman_wred_context_shared_n_max = 0;
 167         cap->cman_wred_context_shared_n_nodes_per_context_max = 0;
 168         cap->cman_wred_context_shared_n_contexts_per_node_max = 0;
 169         cap->stats_mask = 0;
 170
 171         return 0;
 172 }
 173
 174 static inline struct i40e_tm_shaper_profile *
 175 i40e_shaper_profile_search(struct rte_eth_dev *dev,
 176                            uint32_t shaper_profile_id)
 177 {
 178         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
 179         struct i40e_shaper_profile_list *shaper_profile_list =
 180                 &pf->tm_conf.shaper_profile_list;
 181         struct i40e_tm_shaper_profile *shaper_profile;
 182
 183         TAILQ_FOREACH(shaper_profile, shaper_profile_list, node) {
 184                 if (shaper_profile_id == shaper_profile->shaper_profile_id)
 185                         return shaper_profile;
 186         }
 187
 188         return NULL;
 189 }
 190
 191 static int
 192 i40e_shaper_profile_param_check(struct rte_tm_shaper_params *profile,
 193                                 struct rte_tm_error *error)
 194 {
 195         /* min rate not supported */
 196         if (profile->committed.rate) {
 197                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_COMMITTED_RATE;
 198                 error->message = "committed rate not supported";
 199                 return -EINVAL;
 200         }
 201         /* min bucket size not supported */
 202         if (profile->committed.size) {
 203                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_COMMITTED_SIZE;
 204                 error->message = "committed bucket size not supported";
 205                 return -EINVAL;
 206         }
 207         /* max bucket size not supported */
 208         if (profile->peak.size) {
 209                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_PEAK_SIZE;
 210                 error->message = "peak bucket size not supported";
 211                 return -EINVAL;
 212         }
 213         /* length adjustment not supported */
 214         if (profile->pkt_length_adjust) {
 215                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_PKT_ADJUST_LEN;
 216                 error->message = "packet length adjustment not supported";
 217                 return -EINVAL;
 218         }
 219
 220         return 0;
 221 }
 222
 223 static int
 224 i40e_shaper_profile_add(struct rte_eth_dev *dev,
 225                         uint32_t shaper_profile_id,
 226                         struct rte_tm_shaper_params *profile,
 227                         struct rte_tm_error *error)
 228 {
 229         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
 230         struct i40e_tm_shaper_profile *shaper_profile;
 231         int ret;
 232
 233         if (!profile || !error)
 234                 return -EINVAL;
 235
 236         ret = i40e_shaper_profile_param_check(profile, error);
 237         if (ret)
 238                 return ret;
 239
 240         shaper_profile = i40e_shaper_profile_search(dev, shaper_profile_id);
 241
 242         if (shaper_profile) {
 243                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_ID;
 244                 error->message = "profile ID exist";
 245                 return -EINVAL;
 246         }
 247
 248         shaper_profile = rte_zmalloc("i40e_tm_shaper_profile",
 249                                      sizeof(struct i40e_tm_shaper_profile),
 250                                      0);
 251         if (!shaper_profile)
 252                 return -ENOMEM;
 253         shaper_profile->shaper_profile_id = shaper_profile_id;
 254         (void)rte_memcpy(&shaper_profile->profile, profile,
 255                          sizeof(struct rte_tm_shaper_params));
 256         TAILQ_INSERT_TAIL(&pf->tm_conf.shaper_profile_list,
 257                           shaper_profile, node);
 258
 259         return 0;
 260 }
 261
 262 static int
 263 i40e_shaper_profile_del(struct rte_eth_dev *dev,
 264                         uint32_t shaper_profile_id,
 265                         struct rte_tm_error *error)
 266 {
 267         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
 268         struct i40e_tm_shaper_profile *shaper_profile;
 269
 270         if (!error)
 271                 return -EINVAL;
 272
 273         shaper_profile = i40e_shaper_profile_search(dev, shaper_profile_id);
 274
 275         if (!shaper_profile) {
 276                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_ID;
 277                 error->message = "profile ID not exist";
 278                 return -EINVAL;
 279         }
 280
 281         /* don't delete a profile if it's used by one or several nodes */
 282         if (shaper_profile->reference_count) {
 283                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE;
 284                 error->message = "profile in use";
 285                 return -EINVAL;
 286         }
 287
 288         TAILQ_REMOVE(&pf->tm_conf.shaper_profile_list, shaper_profile, node);
 289         rte_free(shaper_profile);
 290
 291         return 0;
 292 }