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-rw-r--r--examples/multi_process/l2fwd_fork/flib.c280
1 files changed, 0 insertions, 280 deletions
diff --git a/examples/multi_process/l2fwd_fork/flib.c b/examples/multi_process/l2fwd_fork/flib.c
deleted file mode 100644
index 52c6152b..00000000
--- a/examples/multi_process/l2fwd_fork/flib.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdint.h>
-#include <inttypes.h>
-#include <sys/types.h>
-#include <sys/queue.h>
-#include <sys/wait.h>
-#include <sys/prctl.h>
-#include <netinet/in.h>
-#include <setjmp.h>
-#include <stdarg.h>
-#include <ctype.h>
-#include <errno.h>
-#include <getopt.h>
-#include <dirent.h>
-#include <signal.h>
-
-#include <rte_common.h>
-#include <rte_log.h>
-#include <rte_malloc.h>
-#include <rte_memory.h>
-#include <rte_memcpy.h>
-#include <rte_eal.h>
-#include <rte_launch.h>
-#include <rte_atomic.h>
-#include <rte_cycles.h>
-#include <rte_prefetch.h>
-#include <rte_lcore.h>
-#include <rte_per_lcore.h>
-#include <rte_branch_prediction.h>
-#include <rte_interrupts.h>
-#include <rte_random.h>
-#include <rte_debug.h>
-#include <rte_ether.h>
-#include <rte_ethdev.h>
-#include <rte_mempool.h>
-#include <rte_mbuf.h>
-#include <rte_string_fns.h>
-
-#include "flib.h"
-
-#define SIG_PARENT_EXIT SIGUSR1
-
-struct lcore_stat {
- pid_t pid; /**< pthread identifier */
- lcore_function_t *f; /**< function to call */
- void *arg; /**< argument of function */
- slave_exit_notify *cb_fn;
-} __rte_cache_aligned;
-
-
-static struct lcore_stat *core_cfg;
-static uint16_t *lcore_cfg = NULL;
-
-/* signal handler to be notified after parent leaves */
-static void
-sighand_parent_exit(int sig)
-{
- printf("lcore = %u : Find parent leaves, sig=%d\n", rte_lcore_id(),
- sig);
- printf("Child leaving\n");
- exit(0);
-
- return;
-}
-
-/**
- * Real function entrance ran in slave process
- **/
-static int
-slave_proc_func(void)
-{
- struct rte_config *config;
- unsigned slave_id = rte_lcore_id();
- struct lcore_stat *cfg = &core_cfg[slave_id];
-
- if (prctl(PR_SET_PDEATHSIG, SIG_PARENT_EXIT, 0, 0, 0, 0) != 0)
- printf("Warning: Slave can't register for being notified in"
- "case master process exited\n");
- else {
- struct sigaction act;
- memset(&act, 0 , sizeof(act));
- act.sa_handler = sighand_parent_exit;
- if (sigaction(SIG_PARENT_EXIT, &act, NULL) != 0)
- printf("Fail to register signal handler:%d\n", SIG_PARENT_EXIT);
- }
-
- /* Set slave process to SECONDARY to avoid operation like dev_start/stop etc */
- config = rte_eal_get_configuration();
- if (NULL == config)
- printf("Warning:Can't get rte_config\n");
- else
- config->process_type = RTE_PROC_SECONDARY;
-
- printf("Core %u is ready (pid=%d)\n", slave_id, (int)cfg->pid);
-
- exit(cfg->f(cfg->arg));
-}
-
-/**
- * function entrance ran in master thread, which will spawn slave process and wait until
- * specific slave exited.
- **/
-static int
-lcore_func(void *arg __attribute__((unused)))
-{
- unsigned slave_id = rte_lcore_id();
- struct lcore_stat *cfg = &core_cfg[slave_id];
- int pid, stat;
-
- if (rte_get_master_lcore() == slave_id)
- return cfg->f(cfg->arg);
-
- /* fork a slave process */
- pid = fork();
-
- if (pid == -1) {
- printf("Failed to fork\n");
- return -1;
- } else if (pid == 0) /* child */
- return slave_proc_func();
- else { /* parent */
- cfg->pid = pid;
-
- waitpid(pid, &stat, 0);
-
- cfg->pid = 0;
- cfg->f = NULL;
- cfg->arg = NULL;
- /* Notify slave's exit if applicable */
- if(cfg->cb_fn)
- cfg->cb_fn(slave_id, stat);
- return stat;
- }
-}
-
-static int
-lcore_id_init(void)
-{
- int i;
- /* Setup lcore ID allocation map */
- lcore_cfg = rte_zmalloc("LCORE_ID_MAP",
- sizeof(uint16_t) * RTE_MAX_LCORE,
- RTE_CACHE_LINE_SIZE);
-
- if(lcore_cfg == NULL)
- rte_panic("Failed to malloc\n");
-
- for (i = 0; i < RTE_MAX_LCORE; i++) {
- if (rte_lcore_is_enabled(i))
- lcore_cfg[i] = 1;
- }
- return 0;
-}
-
-int
-flib_assign_lcore_id(void)
-{
- unsigned i;
- int ret;
-
- /**
- * thread assigned a lcore id previously, or a slave thread. But still have
- * a bug here: If the core mask includes core 0, and that core call this
- * function, it still can get a new lcore id.
- **/
- if (rte_lcore_id() != 0)
- return -1;
-
- do {
- /* Find a lcore id not used yet, avoid to use lcore ID 0 */
- for (i = 1; i < RTE_MAX_LCORE; i++) {
- if (lcore_cfg[i] == 0)
- break;
- }
- if (i == RTE_MAX_LCORE)
- return -1;
-
- /* Assign new lcore id to this thread */
-
- ret = rte_atomic16_cmpset(&lcore_cfg[i], 0, 1);
- } while (unlikely(ret == 0));
-
- RTE_PER_LCORE(_lcore_id) = i;
- return i;
-}
-
-void
-flib_free_lcore_id(unsigned lcore_id)
-{
- /* id is not valid or belongs to pinned core id */
- if (lcore_id >= RTE_MAX_LCORE || lcore_id == 0 ||
- rte_lcore_is_enabled(lcore_id))
- return;
-
- lcore_cfg[lcore_id] = 0;
-}
-
-int
-flib_register_slave_exit_notify(unsigned slave_id,
- slave_exit_notify *cb)
-{
- if (cb == NULL)
- return -EFAULT;
-
- if (!rte_lcore_is_enabled(slave_id))
- return -ENOENT;
-
- core_cfg[slave_id].cb_fn = cb;
-
- return 0;
-}
-
-enum slave_stat
-flib_query_slave_status(unsigned slave_id)
-{
- if (!rte_lcore_is_enabled(slave_id))
- return ST_FREEZE;
- /* pid only be set when slave process spawned */
- if (core_cfg[slave_id].pid != 0)
- return ST_RUN;
- else
- return ST_IDLE;
-}
-
-int
-flib_remote_launch(lcore_function_t *f,
- void *arg, unsigned slave_id)
-{
- if (f == NULL)
- return -1;
-
- if (!rte_lcore_is_enabled(slave_id))
- return -1;
-
- /* Wait until specific lcore state change to WAIT */
- rte_eal_wait_lcore(slave_id);
-
- core_cfg[slave_id].f = f;
- core_cfg[slave_id].arg = arg;
-
- return rte_eal_remote_launch(lcore_func, NULL, slave_id);
-}
-
-int
-flib_mp_remote_launch(lcore_function_t *f, void *arg,
- enum rte_rmt_call_master_t call_master)
-{
- int i;
-
- RTE_LCORE_FOREACH_SLAVE(i) {
- core_cfg[i].arg = arg;
- core_cfg[i].f = f;
- }
-
- return rte_eal_mp_remote_launch(lcore_func, NULL, call_master);
-}
-
-int
-flib_init(void)
-{
- if ((core_cfg = rte_zmalloc("core_cfg",
- sizeof(struct lcore_stat) * RTE_MAX_LCORE,
- RTE_CACHE_LINE_SIZE)) == NULL ) {
- printf("rte_zmalloc failed\n");
- return -1;
- }
-
- if (lcore_id_init() != 0) {
- printf("lcore_id_init failed\n");
- return -1;
- }
-
- return 0;
-}