2 // Copyright (c) 2010-2017 Intel Corporation
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
8 // http://www.apache.org/licenses/LICENSE-2.0
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.
20 #include <rte_version.h>
23 #include "prox_lua_types.h"
26 #include "task_base.h"
27 #include "task_init.h"
34 #include "prox_shared.h"
35 #include "handle_sched.h"
36 #include "prox_compat.h"
38 struct task_classify {
39 struct task_base base;
42 struct rte_sched_port *sched_port;
45 static inline void handle_classify(struct task_classify *task, struct rte_mbuf *mbuf)
47 const struct qinq_hdr *pqinq = rte_pktmbuf_mtod(mbuf, const struct qinq_hdr *);
49 uint32_t qinq = PKT_TO_LUTQINQ(pqinq->svlan.vlan_tci, pqinq->cvlan.vlan_tci);
51 /* Traffic class can be set by ACL task. If this is the case,
52 don't overwrite it using dscp. Instead, use the
53 traffic class that had been set. */
56 #if RTE_VERSION >= RTE_VERSION_NUM(1,8,0,0)
58 prox_rte_sched_port_pkt_read_tree_path(task->sched_port, mbuf, &dummy, &dummy, &prev_tc, &dummy);
60 struct rte_sched_port_hierarchy *sched = (struct rte_sched_port_hierarchy *) &mbuf->pkt.hash.sched;
61 prev_tc = sched->traffic_class;
64 const prox_rte_ipv4_hdr *ipv4_hdr = (const prox_rte_ipv4_hdr *)(pqinq + 1);
65 uint8_t dscp = task->dscp[ipv4_hdr->type_of_service >> 2];
67 uint8_t queue = dscp & 0x3;
68 uint8_t tc = prev_tc? prev_tc : dscp >> 2;
70 prox_rte_sched_port_pkt_write(task->sched_port, mbuf, 0, task->user_table[qinq], tc, queue, 0);
73 static int handle_classify_bulk(struct task_base *tbase, struct rte_mbuf **mbufs, uint16_t n_pkts)
75 struct task_classify *task = (struct task_classify *)tbase;
78 #ifdef PROX_PREFETCH_OFFSET
79 for (j = 0; j < PROX_PREFETCH_OFFSET && j < n_pkts; ++j) {
80 prefetch_nta(mbufs[j]);
82 for (j = 1; j < PROX_PREFETCH_OFFSET && j < n_pkts; ++j) {
83 prefetch_nta(rte_pktmbuf_mtod(mbufs[j - 1], void *));
86 for (j = 0; j + PREFETCH_OFFSET < n_pkts; ++j) {
87 #ifdef PROX_PREFETCH_OFFSET
88 prefetch_nta(mbufs[j + PREFETCH_OFFSET]);
89 prefetch_nta(rte_pktmbuf_mtod(mbufs[j + PREFETCH_OFFSET - 1], void *));
91 handle_classify(task, mbufs[j]);
93 #ifdef PROX_PREFETCH_OFFSET
94 prefetch_nta(rte_pktmbuf_mtod(mbufs[n_pkts - 1], void *));
95 for (; j < n_pkts; ++j) {
96 handle_classify(task, mbufs[j]);
100 return task->base.tx_pkt(&task->base, mbufs, n_pkts, NULL);
103 static void init_task_classify(struct task_base *tbase, struct task_args *targ)
105 struct task_classify *task = (struct task_classify *)tbase;
106 const int socket_id = rte_lcore_to_socket_id(targ->lconf->id);
108 task->user_table = prox_sh_find_socket(socket_id, "user_table");
109 if (!task->user_table) {
110 PROX_PANIC(!strcmp(targ->user_table, ""), "No user table defined\n");
111 int ret = lua_to_user_table(prox_lua(), GLOBAL, targ->user_table, socket_id, &task->user_table);
112 PROX_PANIC(ret, "Failed to create user table from config:\n%s\n", get_lua_to_errors());
113 prox_sh_add_socket(socket_id, "user_table", task->user_table);
116 PROX_PANIC(!strcmp(targ->dscp, ""), "DSCP table not specified\n");
117 task->dscp = prox_sh_find_socket(socket_id, targ->dscp);
119 int ret = lua_to_dscp(prox_lua(), GLOBAL, targ->dscp, socket_id, &task->dscp);
120 PROX_PANIC(ret, "Failed to create dscp table from config\n");
121 prox_sh_add_socket(socket_id, targ->dscp, task->dscp);
123 int rc = init_port_sched(&task->sched_port, targ);
124 PROX_PANIC(rc, "Did not find any QoS task to transmit to => undefined sched_port parameters\n");
127 static struct task_init task_init_classify = {
128 .mode_str = "classify",
129 .init = init_task_classify,
130 .handle = handle_classify_bulk,
131 .flag_features = TASK_FEATURE_NEVER_DISCARDS,
132 .size = sizeof(struct task_classify)
135 __attribute__((constructor)) static void reg_task_classify(void)
137 reg_task(&task_init_classify);