drivers/net/ixgbe/ixgbe_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 "ixgbe_ethdev.h"
  37
  38 static int ixgbe_tm_capabilities_get(struct rte_eth_dev *dev,
  39                                      struct rte_tm_capabilities *cap,
  40                                      struct rte_tm_error *error);
  41 static int ixgbe_shaper_profile_add(struct rte_eth_dev *dev,
  42                                     uint32_t shaper_profile_id,
  43                                     struct rte_tm_shaper_params *profile,
  44                                     struct rte_tm_error *error);
  45 static int ixgbe_shaper_profile_del(struct rte_eth_dev *dev,
  46                                     uint32_t shaper_profile_id,
  47                                     struct rte_tm_error *error);
  48
  49 const struct rte_tm_ops ixgbe_tm_ops = {
  50         .capabilities_get = ixgbe_tm_capabilities_get,
  51         .shaper_profile_add = ixgbe_shaper_profile_add,
  52         .shaper_profile_delete = ixgbe_shaper_profile_del,
  53 };
  54
  55 int
  56 ixgbe_tm_ops_get(struct rte_eth_dev *dev __rte_unused,
  57                  void *arg)
  58 {
  59         if (!arg)
  60                 return -EINVAL;
  61
  62         *(const void **)arg = &ixgbe_tm_ops;
  63
  64         return 0;
  65 }
  66
  67 void
  68 ixgbe_tm_conf_init(struct rte_eth_dev *dev)
  69 {
  70         struct ixgbe_tm_conf *tm_conf =
  71                 IXGBE_DEV_PRIVATE_TO_TM_CONF(dev->data->dev_private);
  72
  73         /* initialize shaper profile list */
  74         TAILQ_INIT(&tm_conf->shaper_profile_list);
  75 }
  76
  77 void
  78 ixgbe_tm_conf_uninit(struct rte_eth_dev *dev)
  79 {
  80         struct ixgbe_tm_conf *tm_conf =
  81                 IXGBE_DEV_PRIVATE_TO_TM_CONF(dev->data->dev_private);
  82         struct ixgbe_tm_shaper_profile *shaper_profile;
  83
  84         /* Remove all shaper profiles */
  85         while ((shaper_profile =
  86                TAILQ_FIRST(&tm_conf->shaper_profile_list))) {
  87                 TAILQ_REMOVE(&tm_conf->shaper_profile_list,
  88                              shaper_profile, node);
  89                 rte_free(shaper_profile);
  90         }
  91 }
  92
  93 static inline uint8_t
  94 ixgbe_tc_nb_get(struct rte_eth_dev *dev)
  95 {
  96         struct rte_eth_conf *eth_conf;
  97         uint8_t nb_tcs = 0;
  98
  99         eth_conf = &dev->data->dev_conf;
 100         if (eth_conf->txmode.mq_mode == ETH_MQ_TX_DCB) {
 101                 nb_tcs = eth_conf->tx_adv_conf.dcb_tx_conf.nb_tcs;
 102         } else if (eth_conf->txmode.mq_mode == ETH_MQ_TX_VMDQ_DCB) {
 103                 if (eth_conf->tx_adv_conf.vmdq_dcb_tx_conf.nb_queue_pools ==
 104                     ETH_32_POOLS)
 105                         nb_tcs = ETH_4_TCS;
 106                 else
 107                         nb_tcs = ETH_8_TCS;
 108         } else {
 109                 nb_tcs = 1;
 110         }
 111
 112         return nb_tcs;
 113 }
 114
 115 static int
 116 ixgbe_tm_capabilities_get(struct rte_eth_dev *dev,
 117                           struct rte_tm_capabilities *cap,
 118                           struct rte_tm_error *error)
 119 {
 120         struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 121         uint8_t tc_nb = ixgbe_tc_nb_get(dev);
 122
 123         if (!cap || !error)
 124                 return -EINVAL;
 125
 126         if (tc_nb > hw->mac.max_tx_queues)
 127                 return -EINVAL;
 128
 129         error->type = RTE_TM_ERROR_TYPE_NONE;
 130
 131         /* set all the parameters to 0 first. */
 132         memset(cap, 0, sizeof(struct rte_tm_capabilities));
 133
 134         /**
 135          * here is the max capability not the current configuration.
 136          */
 137         /* port + TCs + queues */
 138         cap->n_nodes_max = 1 + IXGBE_DCB_MAX_TRAFFIC_CLASS +
 139                            hw->mac.max_tx_queues;
 140         cap->n_levels_max = 3;
 141         cap->non_leaf_nodes_identical = 1;
 142         cap->leaf_nodes_identical = 1;
 143         cap->shaper_n_max = cap->n_nodes_max;
 144         cap->shaper_private_n_max = cap->n_nodes_max;
 145         cap->shaper_private_dual_rate_n_max = 0;
 146         cap->shaper_private_rate_min = 0;
 147         /* 10Gbps -> 1.25GBps */
 148         cap->shaper_private_rate_max = 1250000000ull;
 149         cap->shaper_shared_n_max = 0;
 150         cap->shaper_shared_n_nodes_per_shaper_max = 0;
 151         cap->shaper_shared_n_shapers_per_node_max = 0;
 152         cap->shaper_shared_dual_rate_n_max = 0;
 153         cap->shaper_shared_rate_min = 0;
 154         cap->shaper_shared_rate_max = 0;
 155         cap->sched_n_children_max = hw->mac.max_tx_queues;
 156         /**
 157          * HW supports SP. But no plan to support it now.
 158          * So, all the nodes should have the same priority.
 159          */
 160         cap->sched_sp_n_priorities_max = 1;
 161         cap->sched_wfq_n_children_per_group_max = 0;
 162         cap->sched_wfq_n_groups_max = 0;
 163         /**
 164          * SW only supports fair round robin now.
 165          * So, all the nodes should have the same weight.
 166          */
 167         cap->sched_wfq_weight_max = 1;
 168         cap->cman_head_drop_supported = 0;
 169         cap->dynamic_update_mask = 0;
 170         cap->shaper_pkt_length_adjust_min = RTE_TM_ETH_FRAMING_OVERHEAD;
 171         cap->shaper_pkt_length_adjust_max = RTE_TM_ETH_FRAMING_OVERHEAD_FCS;
 172         cap->cman_wred_context_n_max = 0;
 173         cap->cman_wred_context_private_n_max = 0;
 174         cap->cman_wred_context_shared_n_max = 0;
 175         cap->cman_wred_context_shared_n_nodes_per_context_max = 0;
 176         cap->cman_wred_context_shared_n_contexts_per_node_max = 0;
 177         cap->stats_mask = 0;
 178
 179         return 0;
 180 }
 181
 182 static inline struct ixgbe_tm_shaper_profile *
 183 ixgbe_shaper_profile_search(struct rte_eth_dev *dev,
 184                             uint32_t shaper_profile_id)
 185 {
 186         struct ixgbe_tm_conf *tm_conf =
 187                 IXGBE_DEV_PRIVATE_TO_TM_CONF(dev->data->dev_private);
 188         struct ixgbe_shaper_profile_list *shaper_profile_list =
 189                 &tm_conf->shaper_profile_list;
 190         struct ixgbe_tm_shaper_profile *shaper_profile;
 191
 192         TAILQ_FOREACH(shaper_profile, shaper_profile_list, node) {
 193                 if (shaper_profile_id == shaper_profile->shaper_profile_id)
 194                         return shaper_profile;
 195         }
 196
 197         return NULL;
 198 }
 199
 200 static int
 201 ixgbe_shaper_profile_param_check(struct rte_tm_shaper_params *profile,
 202                                  struct rte_tm_error *error)
 203 {
 204         /* min rate not supported */
 205         if (profile->committed.rate) {
 206                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_COMMITTED_RATE;
 207                 error->message = "committed rate not supported";
 208                 return -EINVAL;
 209         }
 210         /* min bucket size not supported */
 211         if (profile->committed.size) {
 212                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_COMMITTED_SIZE;
 213                 error->message = "committed bucket size not supported";
 214                 return -EINVAL;
 215         }
 216         /* max bucket size not supported */
 217         if (profile->peak.size) {
 218                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_PEAK_SIZE;
 219                 error->message = "peak bucket size not supported";
 220                 return -EINVAL;
 221         }
 222         /* length adjustment not supported */
 223         if (profile->pkt_length_adjust) {
 224                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_PKT_ADJUST_LEN;
 225                 error->message = "packet length adjustment not supported";
 226                 return -EINVAL;
 227         }
 228
 229         return 0;
 230 }
 231
 232 static int
 233 ixgbe_shaper_profile_add(struct rte_eth_dev *dev,
 234                          uint32_t shaper_profile_id,
 235                          struct rte_tm_shaper_params *profile,
 236                          struct rte_tm_error *error)
 237 {
 238         struct ixgbe_tm_conf *tm_conf =
 239                 IXGBE_DEV_PRIVATE_TO_TM_CONF(dev->data->dev_private);
 240         struct ixgbe_tm_shaper_profile *shaper_profile;
 241         int ret;
 242
 243         if (!profile || !error)
 244                 return -EINVAL;
 245
 246         ret = ixgbe_shaper_profile_param_check(profile, error);
 247         if (ret)
 248                 return ret;
 249
 250         shaper_profile = ixgbe_shaper_profile_search(dev, shaper_profile_id);
 251
 252         if (shaper_profile) {
 253                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_ID;
 254                 error->message = "profile ID exist";
 255                 return -EINVAL;
 256         }
 257
 258         shaper_profile = rte_zmalloc("ixgbe_tm_shaper_profile",
 259                                      sizeof(struct ixgbe_tm_shaper_profile),
 260                                      0);
 261         if (!shaper_profile)
 262                 return -ENOMEM;
 263         shaper_profile->shaper_profile_id = shaper_profile_id;
 264         (void)rte_memcpy(&shaper_profile->profile, profile,
 265                          sizeof(struct rte_tm_shaper_params));
 266         TAILQ_INSERT_TAIL(&tm_conf->shaper_profile_list,
 267                           shaper_profile, node);
 268
 269         return 0;
 270 }
 271
 272 static int
 273 ixgbe_shaper_profile_del(struct rte_eth_dev *dev,
 274                          uint32_t shaper_profile_id,
 275                          struct rte_tm_error *error)
 276 {
 277         struct ixgbe_tm_conf *tm_conf =
 278                 IXGBE_DEV_PRIVATE_TO_TM_CONF(dev->data->dev_private);
 279         struct ixgbe_tm_shaper_profile *shaper_profile;
 280
 281         if (!error)
 282                 return -EINVAL;
 283
 284         shaper_profile = ixgbe_shaper_profile_search(dev, shaper_profile_id);
 285
 286         if (!shaper_profile) {
 287                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_ID;
 288                 error->message = "profile ID not exist";
 289                 return -EINVAL;
 290         }
 291
 292         /* don't delete a profile if it's used by one or several nodes */
 293         if (shaper_profile->reference_count) {
 294                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE;
 295                 error->message = "profile in use";
 296                 return -EINVAL;
 297         }
 298
 299         TAILQ_REMOVE(&tm_conf->shaper_profile_list, shaper_profile, node);
 300         rte_free(shaper_profile);
 301
 302         return 0;
 303 }