examples/kni: add logs to show and clear stats

Add logging messages showing the commands necessary for the user to
have the application display and zero the statistics.

Signed-off-by: Dan Gora <dg@adax.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/examples/kni/main.c b/examples/kni/main.c
index 4fda517..0e3b2a2 100644 (file)
--- a/examples/kni/main.c
+++ b/examples/kni/main.c
@@ -171,14 +171,13 @@ signal_handler(int signum)
        /* When we receive a USR2 signal, reset stats */
        if (signum == SIGUSR2) {
                memset(&kni_stats, 0, sizeof(kni_stats));
-               printf("\n**Statistics have been reset**\n");
+               printf("\n** Statistics have been reset **\n");
                return;
        }
 
        /* When we receive a RTMIN or SIGINT signal, stop kni processing */
        if (signum == SIGRTMIN || signum == SIGINT){
-               printf("SIGRTMIN is received, and the KNI processing is "
-                                                       "going to stop\n");
+               printf("\nSIGRTMIN/SIGINT received. KNI processing stopping.\n");
                rte_atomic32_inc(&kni_stop);
                return;
         }
@@ -950,6 +949,7 @@ main(int argc, char** argv)
        unsigned i;
        void *retval;
        pthread_t kni_link_tid;
+       int pid;
 
        /* Associate signal_hanlder function with USR signals */
        signal(SIGUSR1, signal_handler);
@@ -1006,6 +1006,16 @@ main(int argc, char** argv)
        }
        check_all_ports_link_status(ports_mask);
 
+       pid = getpid();
+       RTE_LOG(INFO, APP, "========================\n");
+       RTE_LOG(INFO, APP, "KNI Running\n");
+       RTE_LOG(INFO, APP, "kill -SIGUSR1 %d\n", pid);
+       RTE_LOG(INFO, APP, "    Show KNI Statistics.\n");
+       RTE_LOG(INFO, APP, "kill -SIGUSR2 %d\n", pid);
+       RTE_LOG(INFO, APP, "    Zero KNI Statistics.\n");
+       RTE_LOG(INFO, APP, "========================\n");
+       fflush(stdout);
+
        ret = rte_ctrl_thread_create(&kni_link_tid,
                                     "KNI link status check", NULL,
                                     monitor_all_ports_link_status, NULL);