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
  47 const struct rte_tm_ops i40e_tm_ops = {
  48         .capabilities_get = i40e_tm_capabilities_get,
  49         .shaper_profile_add = i40e_shaper_profile_add,
  50 };
  51
  52 int
  53 i40e_tm_ops_get(struct rte_eth_dev *dev __rte_unused,
  54                 void *arg)
  55 {
  56         if (!arg)
  57                 return -EINVAL;
  58
  59         *(const void **)arg = &i40e_tm_ops;
  60
  61         return 0;
  62 }
  63
  64 void
  65 i40e_tm_conf_init(struct rte_eth_dev *dev)
  66 {
  67         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
  68
  69         /* initialize shaper profile list */
  70         TAILQ_INIT(&pf->tm_conf.shaper_profile_list);
  71 }
  72
  73 void
  74 i40e_tm_conf_uninit(struct rte_eth_dev *dev)
  75 {
  76         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
  77         struct i40e_tm_shaper_profile *shaper_profile;
  78
  79         /* Remove all shaper profiles */
  80         while ((shaper_profile =
  81                TAILQ_FIRST(&pf->tm_conf.shaper_profile_list))) {
  82                 TAILQ_REMOVE(&pf->tm_conf.shaper_profile_list,
  83                              shaper_profile, node);
  84                 rte_free(shaper_profile);
  85         }
  86 }
  87
  88 static inline uint16_t
  89 i40e_tc_nb_get(struct rte_eth_dev *dev)
  90 {
  91         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
  92         struct i40e_vsi *main_vsi = pf->main_vsi;
  93         uint16_t sum = 0;
  94         int i;
  95
  96         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
  97                 if (main_vsi->enabled_tc & BIT_ULL(i))
  98                         sum++;
  99         }
 100
 101         return sum;
 102 }
 103
 104 static int
 105 i40e_tm_capabilities_get(struct rte_eth_dev *dev,
 106                          struct rte_tm_capabilities *cap,
 107                          struct rte_tm_error *error)
 108 {
 109         struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 110         uint16_t tc_nb = i40e_tc_nb_get(dev);
 111
 112         if (!cap || !error)
 113                 return -EINVAL;
 114
 115         if (tc_nb > hw->func_caps.num_tx_qp)
 116                 return -EINVAL;
 117
 118         error->type = RTE_TM_ERROR_TYPE_NONE;
 119
 120         /* set all the parameters to 0 first. */
 121         memset(cap, 0, sizeof(struct rte_tm_capabilities));
 122
 123         /**
 124          * support port + TCs + queues
 125          * here shows the max capability not the current configuration.
 126          */
 127         cap->n_nodes_max = 1 + I40E_MAX_TRAFFIC_CLASS + hw->func_caps.num_tx_qp;
 128         cap->n_levels_max = 3; /* port, TC, queue */
 129         cap->non_leaf_nodes_identical = 1;
 130         cap->leaf_nodes_identical = 1;
 131         cap->shaper_n_max = cap->n_nodes_max;
 132         cap->shaper_private_n_max = cap->n_nodes_max;
 133         cap->shaper_private_dual_rate_n_max = 0;
 134         cap->shaper_private_rate_min = 0;
 135         /* 40Gbps -> 5GBps */
 136         cap->shaper_private_rate_max = 5000000000ull;
 137         cap->shaper_shared_n_max = 0;
 138         cap->shaper_shared_n_nodes_per_shaper_max = 0;
 139         cap->shaper_shared_n_shapers_per_node_max = 0;
 140         cap->shaper_shared_dual_rate_n_max = 0;
 141         cap->shaper_shared_rate_min = 0;
 142         cap->shaper_shared_rate_max = 0;
 143         cap->sched_n_children_max = hw->func_caps.num_tx_qp;
 144         /**
 145          * HW supports SP. But no plan to support it now.
 146          * So, all the nodes should have the same priority.
 147          */
 148         cap->sched_sp_n_priorities_max = 1;
 149         cap->sched_wfq_n_children_per_group_max = 0;
 150         cap->sched_wfq_n_groups_max = 0;
 151         /**
 152          * SW only supports fair round robin now.
 153          * So, all the nodes should have the same weight.
 154          */
 155         cap->sched_wfq_weight_max = 1;
 156         cap->cman_head_drop_supported = 0;
 157         cap->dynamic_update_mask = 0;
 158         cap->shaper_pkt_length_adjust_min = RTE_TM_ETH_FRAMING_OVERHEAD;
 159         cap->shaper_pkt_length_adjust_max = RTE_TM_ETH_FRAMING_OVERHEAD_FCS;
 160         cap->cman_wred_context_n_max = 0;
 161         cap->cman_wred_context_private_n_max = 0;
 162         cap->cman_wred_context_shared_n_max = 0;
 163         cap->cman_wred_context_shared_n_nodes_per_context_max = 0;
 164         cap->cman_wred_context_shared_n_contexts_per_node_max = 0;
 165         cap->stats_mask = 0;
 166
 167         return 0;
 168 }
 169
 170 static inline struct i40e_tm_shaper_profile *
 171 i40e_shaper_profile_search(struct rte_eth_dev *dev,
 172                            uint32_t shaper_profile_id)
 173 {
 174         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
 175         struct i40e_shaper_profile_list *shaper_profile_list =
 176                 &pf->tm_conf.shaper_profile_list;
 177         struct i40e_tm_shaper_profile *shaper_profile;
 178
 179         TAILQ_FOREACH(shaper_profile, shaper_profile_list, node) {
 180                 if (shaper_profile_id == shaper_profile->shaper_profile_id)
 181                         return shaper_profile;
 182         }
 183
 184         return NULL;
 185 }
 186
 187 static int
 188 i40e_shaper_profile_param_check(struct rte_tm_shaper_params *profile,
 189                                 struct rte_tm_error *error)
 190 {
 191         /* min rate not supported */
 192         if (profile->committed.rate) {
 193                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_COMMITTED_RATE;
 194                 error->message = "committed rate not supported";
 195                 return -EINVAL;
 196         }
 197         /* min bucket size not supported */
 198         if (profile->committed.size) {
 199                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_COMMITTED_SIZE;
 200                 error->message = "committed bucket size not supported";
 201                 return -EINVAL;
 202         }
 203         /* max bucket size not supported */
 204         if (profile->peak.size) {
 205                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_PEAK_SIZE;
 206                 error->message = "peak bucket size not supported";
 207                 return -EINVAL;
 208         }
 209         /* length adjustment not supported */
 210         if (profile->pkt_length_adjust) {
 211                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_PKT_ADJUST_LEN;
 212                 error->message = "packet length adjustment not supported";
 213                 return -EINVAL;
 214         }
 215
 216         return 0;
 217 }
 218
 219 static int
 220 i40e_shaper_profile_add(struct rte_eth_dev *dev,
 221                         uint32_t shaper_profile_id,
 222                         struct rte_tm_shaper_params *profile,
 223                         struct rte_tm_error *error)
 224 {
 225         struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
 226         struct i40e_tm_shaper_profile *shaper_profile;
 227         int ret;
 228
 229         if (!profile || !error)
 230                 return -EINVAL;
 231
 232         ret = i40e_shaper_profile_param_check(profile, error);
 233         if (ret)
 234                 return ret;
 235
 236         shaper_profile = i40e_shaper_profile_search(dev, shaper_profile_id);
 237
 238         if (shaper_profile) {
 239                 error->type = RTE_TM_ERROR_TYPE_SHAPER_PROFILE_ID;
 240                 error->message = "profile ID exist";
 241                 return -EINVAL;
 242         }
 243
 244         shaper_profile = rte_zmalloc("i40e_tm_shaper_profile",
 245                                      sizeof(struct i40e_tm_shaper_profile),
 246                                      0);
 247         if (!shaper_profile)
 248                 return -ENOMEM;
 249         shaper_profile->shaper_profile_id = shaper_profile_id;
 250         (void)rte_memcpy(&shaper_profile->profile, profile,
 251                          sizeof(struct rte_tm_shaper_params));
 252         TAILQ_INSERT_TAIL(&pf->tm_conf.shaper_profile_list,
 253                           shaper_profile, node);
 254
 255         return 0;
 256 }