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/*
// Copyright (c) 2010-2017 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/
#include <rte_cycles.h>
#include <rte_table_hash.h>
#include "prox_lua.h"
#include "prox_lua_types.h"
#include "handle_qinq_encap6.h"
#include "log.h"
#include "lconf.h"
#include "task_init.h"
#include "task_base.h"
#include "tx_pkt.h"
#include "defines.h"
#include "pkt_prototypes.h"
#include "prox_assert.h"
#include "hash_utils.h"
#include "task_base.h"
#include "prefetch.h"
#include "hash_entry_types.h"
#include "prox_cfg.h"
#include "log.h"
#include "quit.h"
#include "prox_shared.h"
#include "prox_compat.h"
/* Packets must all be IPv6, always store QinQ tags for lookup (not configurable) */
struct task_qinq_decap6 {
struct task_base base;
struct rte_table_hash *cpe_table;
uint16_t *user_table;
uint32_t bucket_index;
prox_rte_ether_addr edaddr;
struct rte_lpm6 *rte_lpm6;
void* period_data; /* used if using dual stack*/
void (*period_func)(void* data);
uint64_t cpe_timeout;
};
void update_arp_entries6(void* data);
static void init_task_qinq_decap6(struct task_base *tbase, struct task_args *targ)
{
struct task_qinq_decap6 *task = (struct task_qinq_decap6 *)tbase;
const int socket_id = rte_lcore_to_socket_id(targ->lconf->id);
task->edaddr = targ->edaddr;
task->cpe_table = targ->cpe_table;
task->cpe_timeout = msec_to_tsc(targ->cpe_table_timeout_ms);
if (targ->cpe_table_timeout_ms) {
if (targ->lconf->period_func) {
task->period_func = targ->lconf->period_func;
task->period_data = targ->lconf->period_data;
}
targ->lconf->period_func = update_arp_entries6;
targ->lconf->period_data = tbase;
targ->lconf->period_timeout = msec_to_tsc(500) / NUM_VCPES;
}
task->user_table = prox_sh_find_socket(socket_id, "user_table");
if (!task->user_table) {
PROX_PANIC(!strcmp(targ->user_table, ""), "No user table defined\n");
int ret = lua_to_user_table(prox_lua(), GLOBAL, targ->user_table, socket_id, &task->user_table);
PROX_PANIC(ret, "Failed to create user table from config:\n%s\n", get_lua_to_errors());
prox_sh_add_socket(socket_id, "user_table", task->user_table);
}
struct lpm6 *lpm = prox_sh_find_socket(socket_id, "lpm6");
if (!lpm) {
struct lpm6 *lpm6;
int ret;
ret = lua_to_lpm6(prox_lua(), GLOBAL, "lpm6", socket_id, &lpm6);
PROX_PANIC(ret, "Failed to read lpm6 from config:\n%s\n", get_lua_to_errors());
prox_sh_add_socket(socket_id, "lpm6", lpm6);
}
task->rte_lpm6 = lpm->rte_lpm6;
}
static void early_init(struct task_args *targ)
{
if (!targ->cpe_table) {
init_cpe6_table(targ);
}
}
static inline uint8_t handle_qinq_decap6(struct task_qinq_decap6 *task, struct rte_mbuf *mbuf)
{
struct qinq_hdr *pqinq = rte_pktmbuf_mtod(mbuf, struct qinq_hdr *);
prox_rte_ipv6_hdr *pip6 = (prox_rte_ipv6_hdr *)(pqinq + 1);
uint16_t svlan = pqinq->svlan.vlan_tci & 0xFF0F;
uint16_t cvlan = pqinq->cvlan.vlan_tci & 0xFF0F;
struct cpe_data entry;
entry.mac_port_8bytes = *((uint64_t *)(((uint8_t *)pqinq) + 5)) << 16;
entry.qinq_svlan = svlan;
entry.qinq_cvlan = cvlan;
entry.user = task->user_table[PKT_TO_LUTQINQ(svlan, cvlan)];
entry.tsc = rte_rdtsc() + task->cpe_timeout;
int key_found = 0;
void* entry_in_hash = NULL;
int ret = prox_rte_table_add(task->cpe_table, pip6->src_addr, &entry, &key_found, &entry_in_hash);
if (unlikely(ret)) {
plogx_err("Failed to add key " IPv6_BYTES_FMT "\n", IPv6_BYTES(pip6->src_addr));
return OUT_DISCARD;
}
pqinq = (struct qinq_hdr *)rte_pktmbuf_adj(mbuf, 2 * sizeof(prox_rte_vlan_hdr));
PROX_ASSERT(pqinq);
pqinq->ether_type = ETYPE_IPv6;
// Dest MAC addresses
prox_rte_ether_addr_copy(&task->edaddr, &pqinq->d_addr);
return 0;
}
static int handle_qinq_decap6_bulk(struct task_base *tbase, struct rte_mbuf **mbufs, uint16_t n_pkts)
{
struct task_qinq_decap6 *task = (struct task_qinq_decap6 *)tbase;
uint8_t out[MAX_PKT_BURST];
uint16_t j;
prefetch_first(mbufs, n_pkts);
for (j = 0; j + PREFETCH_OFFSET < n_pkts; ++j) {
#ifdef PROX_PREFETCH_OFFSET
PREFETCH0(mbufs[j + PREFETCH_OFFSET]);
PREFETCH0(rte_pktmbuf_mtod(mbufs[j + PREFETCH_OFFSET - 1], void *));
#endif
out[j] = handle_qinq_decap6(task, mbufs[j]);
}
#ifdef PROX_PREFETCH_OFFSET
PREFETCH0(rte_pktmbuf_mtod(mbufs[n_pkts - 1], void *));
for (; j < n_pkts; ++j) {
out[j] = handle_qinq_decap6(task, mbufs[j]);
}
#endif
return task->base.tx_pkt(&task->base, mbufs, n_pkts, out);
}
void update_arp_entries6(void* data)
{
uint64_t cur_tsc = rte_rdtsc();
struct task_qinq_decap6 *task = (struct task_qinq_decap6 *)data;
struct cpe_data *entries[4] = {0};
void *key[4] = {0};
uint64_t n_buckets = get_bucket(task->cpe_table, task->bucket_index, key, (void**)entries);
for (uint8_t i = 0; i < 4 && entries[i]; ++i) {
if (entries[i]->tsc < cur_tsc) {
int key_found = 0;
void* entry = 0;
prox_rte_table_delete(task->cpe_table, key[i], &key_found, entry);
}
}
task->bucket_index++;
task->bucket_index &= (n_buckets - 1);
if (task->period_func) {
task->period_func(task->period_data);
}
}
static struct task_init task_init_qinq_decap6 = {
.mode = QINQ_DECAP6,
.mode_str = "qinqdecapv6",
.early_init = early_init,
.init = init_task_qinq_decap6,
.handle = handle_qinq_decap6_bulk,
.size = sizeof(struct task_qinq_decap6)
};
__attribute__((constructor)) static void reg_task_qinq_decap6(void)
{
reg_task(&task_init_qinq_decap6);
}
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