Do a clean shutdown of testpmd when a signal is received; instead of
having testpmd kill itself. This fixes the problem where a signal could
be received in the middle of a PMD and then the signal handler would
call PMD's close routine leading to locking problems.
An added benefit is it gets rid of some Windows specific code.
Fixes: d9a191a00e81 ("app/testpmd: fix quitting in container")
Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
---
v9 - also handle the interactive case.
use cmdine_poll() rather than signals and atexit
app/test-pmd/cmdline.c | 28 +++++----------
app/test-pmd/testpmd.c | 77 ++++++++++++++++++++----------------------
app/test-pmd/testpmd.h | 1 +
3 files changed, 46 insertions(+), 60 deletions(-)
diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index b32dc8bfd445..fbe9ad694dee 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -65,7 +65,6 @@
#include "cmdline_tm.h"
#include "bpf_cmd.h"
-static struct cmdline *testpmd_cl;
static cmdline_parse_ctx_t *main_ctx;
static TAILQ_HEAD(, testpmd_driver_commands) driver_commands_head =
TAILQ_HEAD_INITIALIZER(driver_commands_head);
@@ -12921,28 +12920,19 @@ cmdline_read_from_file(const char *filename)
void
prompt(void)
{
- int ret;
+ struct cmdline *cl;
- testpmd_cl = cmdline_stdin_new(main_ctx, "testpmd> ");
- if (testpmd_cl == NULL)
+ cl = cmdline_stdin_new(main_ctx, "testpmd> ");
+ if (cl == NULL)
return;
- ret = atexit(prompt_exit);
- if (ret != 0)
- fprintf(stderr, "Cannot set exit function for cmdline\n");
-
- cmdline_interact(testpmd_cl);
- if (ret != 0)
- cmdline_stdin_exit(testpmd_cl);
-}
-
-void
-prompt_exit(void)
-{
- if (testpmd_cl != NULL) {
- cmdline_quit(testpmd_cl);
- cmdline_stdin_exit(testpmd_cl);
+ while (f_quit == 0 && cl_quit == 0) {
+ if (cmdline_poll(cl) < 0)
+ break;
}
+
+ cmdline_quit(cl);
+ cmdline_stdin_exit(cl);
}
void
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 134d79a55547..d01b6105b7de 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -11,6 +11,7 @@
#include <fcntl.h>
#ifndef RTE_EXEC_ENV_WINDOWS
#include <sys/mman.h>
+#include <sys/select.h>
#endif
#include <sys/types.h>
#include <errno.h>
@@ -231,7 +232,7 @@ unsigned int xstats_display_num; /**< Size of extended
statistics to show */
* In container, it cannot terminate the process which running with
'stats-period'
* option. Set flag to exit stats period loop after received SIGINT/SIGTERM.
*/
-static volatile uint8_t f_quit;
+volatile uint8_t f_quit;
uint8_t cl_quit; /* Quit testpmd from cmdline. */
/*
@@ -4315,13 +4316,6 @@ init_port(void)
memset(txring_numa, NUMA_NO_CONFIG, RTE_MAX_ETHPORTS);
}
-static void
-force_quit(void)
-{
- pmd_test_exit();
- prompt_exit();
-}
-
static void
print_stats(void)
{
@@ -4340,28 +4334,9 @@ print_stats(void)
}
static void
-signal_handler(int signum)
+signal_handler(int signum __rte_unused)
{
- if (signum == SIGINT || signum == SIGTERM) {
- fprintf(stderr, "\nSignal %d received, preparing to exit...\n",
- signum);
-#ifdef RTE_LIB_PDUMP
- /* uninitialize packet capture framework */
- rte_pdump_uninit();
-#endif
-#ifdef RTE_LIB_LATENCYSTATS
- if (latencystats_enabled != 0)
- rte_latencystats_uninit();
-#endif
- force_quit();
- /* Set flag to indicate the force termination. */
- f_quit = 1;
- /* exit with the expected status */
-#ifndef RTE_EXEC_ENV_WINDOWS
- signal(signum, SIG_DFL);
- kill(getpid(), signum);
-#endif
- }
+ f_quit = 1;
}
int
@@ -4536,15 +4511,9 @@ main(int argc, char** argv)
start_packet_forwarding(0);
}
prompt();
- pmd_test_exit();
} else
#endif
{
- char c;
- int rc;
-
- f_quit = 0;
-
printf("No commandline core given, start packet forwarding\n");
start_packet_forwarding(tx_first);
if (stats_period != 0) {
@@ -4567,15 +4536,41 @@ main(int argc, char** argv)
prev_time = cur_time;
rte_delay_us_sleep(US_PER_S);
}
- }
+ } else {
+ char c;
+ fd_set fds;
+
+ printf("Press enter to exit\n");
- printf("Press enter to exit\n");
- rc = read(0, &c, 1);
- pmd_test_exit();
- if (rc < 0)
- return 1;
+ FD_ZERO(&fds);
+ FD_SET(0, &fds);
+
+ /* wait for signal or enter */
+ ret = select(1, &fds, NULL, NULL, NULL);
+ if (ret < 0 && errno != EINTR)
+ rte_exit(EXIT_FAILURE,
+ "Select failed: %s\n",
+ strerror(errno));
+
+ /* if got enter then consume it */
+ if (ret == 1 && read(0, &c, 1) < 0)
+ rte_exit(EXIT_FAILURE,
+ "Read failed: %s\n",
+ strerror(errno));
+ }
}
+ pmd_test_exit();
+
+#ifdef RTE_LIB_PDUMP
+ /* uninitialize packet capture framework */
+ rte_pdump_uninit();
+#endif
+#ifdef RTE_LIB_LATENCYSTATS
+ if (latencystats_enabled != 0)
+ rte_latencystats_uninit();
+#endif
+
ret = rte_eal_cleanup();
if (ret != 0)
rte_exit(EXIT_FAILURE,
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index 7d24d25970d2..022210a7a964 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -34,6 +34,7 @@
#define RTE_PORT_HANDLING (uint16_t)3
extern uint8_t cl_quit;
+extern volatile uint8_t f_quit;
/*
* It is used to allocate the memory for hash key.
--
2.39.0
