VNFs/DPPD-PROX/handle_police.c

   1 /*
   2 // Copyright (c) 2010-2017 Intel Corporation
   3 //
   4 // Licensed under the Apache License, Version 2.0 (the "License");
   5 // you may not use this file except in compliance with the License.
   6 // You may obtain a copy of the License at
   7 //
   8 //     http://www.apache.org/licenses/LICENSE-2.0
   9 //
  10 // Unless required by applicable law or agreed to in writing, software
  11 // distributed under the License is distributed on an "AS IS" BASIS,
  12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 // See the License for the specific language governing permissions and
  14 // limitations under the License.
  15 */
  16
  17 #include <string.h>
  18 #include <stdio.h>
  19 #include <rte_mbuf.h>
  20 #include <rte_cycles.h>
  21 #include <rte_version.h>
  22
  23 #include "prox_lua.h"
  24 #include "prox_lua_types.h"
  25 #include "prox_malloc.h"
  26 #include "task_base.h"
  27 #include "task_init.h"
  28 #include "lconf.h"
  29 #include "prefetch.h"
  30 #include "quit.h"
  31 #include "log.h"
  32 #include "defines.h"
  33 #include "qinq.h"
  34 #include "prox_cfg.h"
  35 #include "prox_shared.h"
  36
  37 #if RTE_VERSION < RTE_VERSION_NUM(1,8,0,0)
  38 #define RTE_CACHE_LINE_SIZE CACHE_LINE_SIZE
  39 #endif
  40
  41 struct task_police {
  42         struct task_base base;
  43         union {
  44                 struct rte_meter_srtcm *sr_flows;
  45                 struct rte_meter_trtcm *tr_flows;
  46         };
  47
  48         uint16_t           *user_table;
  49         enum police_action police_act[3][3];
  50         uint16_t overhead;
  51         uint8_t runtime_flags;
  52 };
  53
  54 typedef uint8_t (*hp) (struct task_police *task, struct rte_mbuf *mbuf, uint64_t tsc, uint32_t user);
  55
  56 static uint8_t handle_police(struct task_police *task, struct rte_mbuf *mbuf, uint64_t tsc, uint32_t user)
  57 {
  58         enum rte_meter_color in_color = e_RTE_METER_GREEN;
  59         enum rte_meter_color out_color;
  60         uint32_t pkt_len = rte_pktmbuf_pkt_len(mbuf) + task->overhead;
  61 #if RTE_VERSION < RTE_VERSION_NUM(18,5,0,0)
  62         out_color = rte_meter_srtcm_color_aware_check(&task->sr_flows[user], tsc, pkt_len, in_color);
  63 #else
  64         out_color = 0;  // TODO DPDK1805
  65 #endif
  66         return task->police_act[in_color][out_color] == ACT_DROP? OUT_DISCARD : 0;
  67 }
  68
  69 static uint8_t handle_police_tr(struct task_police *task, struct rte_mbuf *mbuf, uint64_t tsc, uint32_t user)
  70 {
  71         enum rte_meter_color in_color = e_RTE_METER_GREEN;
  72         enum rte_meter_color out_color;
  73         uint32_t pkt_len = rte_pktmbuf_pkt_len(mbuf) + task->overhead;
  74 #if RTE_VERSION < RTE_VERSION_NUM(18,5,0,0)
  75         out_color = rte_meter_trtcm_color_aware_check(&task->tr_flows[user], tsc, pkt_len, in_color);
  76 #else
  77         out_color = 0;// TODO DPDK1805
  78 #endif
  79
  80         if (task->runtime_flags  & TASK_MARK) {
  81 #if RTE_VERSION >= RTE_VERSION_NUM(1,8,0,0)
  82                 uint32_t subport, pipe, traffic_class, queue;
  83                 enum rte_meter_color color;
  84
  85                 rte_sched_port_pkt_read_tree_path(mbuf, &subport, &pipe, &traffic_class, &queue);
  86                 color = task->police_act[in_color][out_color];
  87
  88                 rte_sched_port_pkt_write(mbuf, subport, pipe, traffic_class, queue, color);
  89 #else
  90                 struct rte_sched_port_hierarchy *sched =
  91                         (struct rte_sched_port_hierarchy *) &mbuf->pkt.hash.sched;
  92                 sched->color = task->police_act[in_color][out_color];
  93 #endif
  94         }
  95
  96         return task->police_act[in_color][out_color] == ACT_DROP? OUT_DISCARD : 0;
  97 }
  98
  99 static inline int get_user(struct task_police *task, struct rte_mbuf *mbuf)
 100 {
 101         if (task->runtime_flags & TASK_CLASSIFY) {
 102                 struct qinq_hdr *pqinq = rte_pktmbuf_mtod(mbuf, struct qinq_hdr *);
 103                 return PKT_TO_LUTQINQ(pqinq->svlan.vlan_tci, pqinq->cvlan.vlan_tci);
 104         }
 105
 106 #if RTE_VERSION >= RTE_VERSION_NUM(1,8,0,0)
 107         uint32_t dummy;
 108         uint32_t pipe;
 109
 110         rte_sched_port_pkt_read_tree_path(mbuf, &dummy, &pipe, &dummy, &dummy);
 111         return pipe;
 112 #else
 113         struct rte_sched_port_hierarchy *sched =
 114                 (struct rte_sched_port_hierarchy *) &mbuf->pkt.hash.sched;
 115         return sched->pipe;
 116 #endif
 117 }
 118
 119 #define PHASE1_DELAY PREFETCH_OFFSET
 120 #define PHASE2_DELAY PREFETCH_OFFSET
 121 #define PHASE3_DELAY PREFETCH_OFFSET
 122 #define PHASE4_DELAY PREFETCH_OFFSET
 123
 124 static inline int handle_pb(struct task_base *tbase, struct rte_mbuf **mbufs, uint16_t n_pkts, hp handle_police_func)
 125 {
 126         struct task_police *task = (struct task_police *)tbase;
 127         uint16_t j;
 128         uint64_t cur_tsc = rte_rdtsc();
 129         uint32_t user[64];
 130         uint8_t  out[MAX_PKT_BURST];
 131         uint32_t cur_user;
 132         for (j = 0; j < PHASE1_DELAY && j < n_pkts; ++j) {
 133                 PREFETCH0(mbufs[j]);
 134         }
 135
 136         for (j = 0; j < PHASE2_DELAY && j + PHASE1_DELAY < n_pkts; ++j) {
 137                 PREFETCH0(mbufs[j + PHASE1_DELAY]);
 138                 PREFETCH0(rte_pktmbuf_mtod(mbufs[j], void*));
 139         }
 140
 141         for (j = 0; j < PHASE3_DELAY && j + PHASE2_DELAY + PHASE1_DELAY < n_pkts; ++j) {
 142                 PREFETCH0(mbufs[j + PHASE2_DELAY + PHASE1_DELAY]);
 143                 PREFETCH0(rte_pktmbuf_mtod(mbufs[j + PHASE2_DELAY], void*));
 144                 cur_user = get_user(task, mbufs[j]);
 145                 user[j] = cur_user;
 146                 PREFETCH0(&task->user_table[cur_user]);
 147         }
 148
 149         /* At this point, the whole pipeline is running */
 150         for (j = 0; j + PHASE3_DELAY + PHASE2_DELAY + PHASE1_DELAY < n_pkts; ++j) {
 151                 PREFETCH0(mbufs[j + PHASE3_DELAY + PHASE2_DELAY + PHASE1_DELAY]);
 152                 PREFETCH0(rte_pktmbuf_mtod(mbufs[j + PHASE3_DELAY + PHASE2_DELAY], void*));
 153                 cur_user = get_user(task, mbufs[j + PHASE3_DELAY]);
 154                 user[j + PHASE3_DELAY] = cur_user;
 155                 PREFETCH0(&task->user_table[cur_user]);
 156
 157                 out[j] = handle_police_func(task, mbufs[j], cur_tsc, task->user_table[user[j]]);
 158         }
 159
 160         /* Last part of pipeline */
 161         for (; j + PHASE3_DELAY + PHASE2_DELAY < n_pkts; ++j) {
 162                 PREFETCH0(rte_pktmbuf_mtod(mbufs[j + PHASE3_DELAY + PHASE2_DELAY], void*));
 163                 PREFETCH0(&task->user_table[j + PHASE3_DELAY]);
 164                 cur_user = get_user(task, mbufs[j + PHASE3_DELAY]);
 165                 user[j + PHASE3_DELAY] = cur_user;
 166                 PREFETCH0(&task->user_table[cur_user]);
 167
 168                 out[j] = handle_police_func(task, mbufs[j], cur_tsc, task->user_table[user[j]]);
 169         }
 170
 171         for (; j + PHASE3_DELAY < n_pkts; ++j) {
 172                 cur_user = get_user(task, mbufs[j + PHASE3_DELAY]);
 173                 user[j + PHASE3_DELAY] = cur_user;
 174                 PREFETCH0(&task->user_table[cur_user]);
 175
 176                 out[j] = handle_police_func(task, mbufs[j], cur_tsc, task->user_table[user[j]]);
 177         }
 178
 179         for (; j < n_pkts; ++j) {
 180                 out[j] = handle_police_func(task, mbufs[j], cur_tsc, task->user_table[user[j]]);
 181         }
 182
 183         return task->base.tx_pkt(&task->base, mbufs, n_pkts, out);
 184 }
 185
 186 static int handle_police_bulk(struct task_base *tbase, struct rte_mbuf **mbuf, uint16_t n_pkts)
 187 {
 188         return handle_pb(tbase, mbuf, n_pkts, handle_police);
 189 }
 190
 191 static int handle_police_tr_bulk(struct task_base *tbase, struct rte_mbuf **mbuf, uint16_t n_pkts)
 192 {
 193         return handle_pb(tbase, mbuf, n_pkts, handle_police_tr);
 194 }
 195
 196 static void init_task_police(struct task_base *tbase, struct task_args *targ)
 197 {
 198         struct task_police *task = (struct task_police *)tbase;
 199         const int socket_id = rte_lcore_to_socket_id(targ->lconf->id);
 200
 201 #if RTE_VERSION >= RTE_VERSION_NUM(18,5,0,0)
 202         plog_warn("mode police might not be supported in this prox/dpdk version\n"); // TODO DPDK1805
 203 #endif
 204
 205         task->overhead = targ->overhead;
 206         task->runtime_flags = targ->runtime_flags;
 207
 208         task->user_table = prox_sh_find_socket(socket_id, "user_table");
 209         if (!task->user_table) {
 210                 PROX_PANIC(!strcmp(targ->user_table, ""), "No user table defined\n");
 211                 int ret = lua_to_user_table(prox_lua(), GLOBAL, targ->user_table, socket_id, &task->user_table);
 212                 PROX_PANIC(ret, "Failed to create user table from config:\n%s\n", get_lua_to_errors());
 213                 prox_sh_add_socket(socket_id, "user_table", task->user_table);
 214         }
 215
 216         if (strcmp(targ->task_init->sub_mode_str, "trtcm")) {
 217                 task->sr_flows = prox_zmalloc(targ->n_flows * sizeof(*task->sr_flows), socket_id);
 218                 PROX_PANIC(task->sr_flows == NULL, "Failed to allocate flow contexts\n");
 219                 PROX_PANIC(!targ->cir, "Commited information rate is set to 0\n");
 220                 PROX_PANIC(!targ->cbs, "Commited information bucket size is set to 0\n");
 221                 PROX_PANIC(!targ->ebs, "Execess information bucket size is set to 0\n");
 222
 223                 struct rte_meter_srtcm_params params = {
 224                         .cir = targ->cir,
 225                         .cbs = targ->cbs,
 226                         .ebs = targ->ebs,
 227                 };
 228
 229                 for (uint32_t i = 0; i < targ->n_flows; ++i) {
 230 #if RTE_VERSION < RTE_VERSION_NUM(18,5,0,0)
 231                         rte_meter_srtcm_config(&task->sr_flows[i], &params);
 232 #else
 233         // TODO DPDK1805
 234 #endif
 235                 }
 236         }
 237         else {
 238                 task->tr_flows = prox_zmalloc(targ->n_flows * sizeof(*task->tr_flows), socket_id);
 239                 PROX_PANIC(task->tr_flows == NULL, "Failed to allocate flow contexts\n");
 240                 PROX_PANIC(!targ->pir, "Peak information rate is set to 0\n");
 241                 PROX_PANIC(!targ->cir, "Commited information rate is set to 0\n");
 242                 PROX_PANIC(!targ->pbs, "Peak information bucket size is set to 0\n");
 243                 PROX_PANIC(!targ->cbs, "Commited information bucket size is set to 0\n");
 244
 245                 struct rte_meter_trtcm_params params = {
 246                         .pir = targ->pir,
 247                         .pbs = targ->pbs,
 248                         .cir = targ->cir,
 249                         .cbs = targ->cbs,
 250                 };
 251
 252                 for (uint32_t i = 0; i < targ->n_flows; ++i) {
 253 #if RTE_VERSION < RTE_VERSION_NUM(18,5,0,0)
 254                         rte_meter_trtcm_config(&task->tr_flows[i], &params);
 255 #else
 256         // TODO DPDK1805
 257 #endif
 258                 }
 259         }
 260
 261         for (uint32_t i = 0; i < 3; ++i) {
 262                 for (uint32_t j = 0; j < 3; ++j) {
 263                         task->police_act[i][j] = targ->police_act[i][j];
 264                 }
 265         }
 266 }
 267
 268 static struct task_init task_init_police = {
 269         .mode_str = "police",
 270         .init = init_task_police,
 271         .handle = handle_police_bulk,
 272         .flag_features = TASK_FEATURE_CLASSIFY,
 273         .size = sizeof(struct task_police)
 274 };
 275
 276 static struct task_init task_init_police2 = {
 277         .mode_str = "police",
 278         .sub_mode_str = "trtcm",
 279         .init = init_task_police,
 280         .handle = handle_police_tr_bulk,
 281         .flag_features = TASK_FEATURE_CLASSIFY,
 282         .size = sizeof(struct task_police)
 283 };
 284
 285 __attribute__((constructor)) static void reg_task_police(void)
 286 {
 287         reg_task(&task_init_police);
 288         reg_task(&task_init_police2);
 289 }