When primary app exits, the residual running pdump will stop the
primary app to restart. Add pdump exits with primary support.
Signed-off-by: Suanming.Mou <mousuanm...@huawei.com>
---
V7:
* omit `else` in monitor_primary.
* add eixting due to primary is not alive message.
* add pdump.rst update.
app/pdump/main.c | 47 +++++++++++++++++++++++++++++++++++++++++++++-
doc/guides/tools/pdump.rst | 2 ++
2 files changed, 48 insertions(+), 1 deletion(-)
diff --git a/app/pdump/main.c b/app/pdump/main.c
index 3d20854..0b74c27 100644
--- a/app/pdump/main.c
+++ b/app/pdump/main.c
@@ -13,6 +13,7 @@
#include <net/if.h>
#include <rte_eal.h>
+#include <rte_alarm.h>
#include <rte_common.h>
#include <rte_debug.h>
#include <rte_ethdev.h>
@@ -65,6 +66,8 @@
#define SIZE 256
#define BURST_SIZE 32
#define NUM_VDEVS 2
+/* Enough to set it to 500ms for exiting. */
+#define MONITOR_INTERVAL (500 * 1000)
/* true if x is a power of 2 */
#define POWEROF2(x) ((((x)-1) & (x)) == 0)
@@ -413,6 +416,21 @@ struct parse_val {
}
static void
+monitor_primary(void *arg __rte_unused)
+{
+ if (quit_signal)
+ return;
+
+ if (rte_eal_primary_proc_alive(NULL)) {
+ rte_eal_alarm_set(MONITOR_INTERVAL, monitor_primary, NULL);
+ return;
+ }
+
+ printf("Exiting dump while primary is not alive...\n");
+ quit_signal = 1;
+}
+
+static void
print_pdump_stats(void)
{
int i;
@@ -537,6 +555,20 @@ struct parse_val {
}
static void
+disable_primary_monitor(void)
+{
+ int ret;
+
+ /*
+ * Don't worry about it is primary exit case. The alarm cancel
+ * function will take care about that. Ignore the ENOENT case.
+ */
+ ret = rte_eal_alarm_cancel(monitor_primary, NULL);
+ if (ret < 0)
+ printf("Fail to disable monitor:%d\n", ret);
+}
+
+static void
signal_handler(int sig_num)
{
if (sig_num == SIGINT) {
@@ -910,6 +942,17 @@ struct parse_val {
;
}
+static void
+enable_primary_monitor(void)
+{
+ int ret;
+
+ /* Once primary exits, so will pdump. */
+ ret = rte_eal_alarm_set(MONITOR_INTERVAL, monitor_primary, NULL);
+ if (ret < 0)
+ printf("Fail to enable monitor:%d\n", ret);
+}
+
int
main(int argc, char **argv)
{
@@ -950,11 +993,13 @@ struct parse_val {
rte_exit(EXIT_FAILURE, "Invalid argument\n");
}
- /* create mempool, ring and vdevs info */
+ /* create mempool, ring, vdevs info and primary monitor */
create_mp_ring_vdev();
enable_pdump();
+ enable_primary_monitor();
dump_packets();
+ disable_primary_monitor();
cleanup_pdump_resources();
/* dump debug stats */
print_pdump_stats();
diff --git a/doc/guides/tools/pdump.rst b/doc/guides/tools/pdump.rst
index 53cd2b4..62b4a5e 100644
--- a/doc/guides/tools/pdump.rst
+++ b/doc/guides/tools/pdump.rst
@@ -26,6 +26,8 @@ a DPDK secondary process and is capable of enabling packet
capture on dpdk ports
Once the libpcap development files are installed, the libpcap based PMD
can be enabled by setting CONFIG_RTE_LIBRTE_PMD_PCAP=y and recompiling
the DPDK.
+ * The ``dpdk-pdump`` tool runs as a DPDK secondary process. It exits when
+ the primary application exits.
Running the Application
-----------------------
--
1.8.3.4
