This add new -S option which does the same thing as wireshark's
dumpcap -S option.
It loops over all interfaces and prints the number of received
and dropped packets. In this mode, actual packet capture is
not done.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
app/dumpcap/main.c | 55 +++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 49 insertions(+), 6 deletions(-)
@@ -66,6 +66,7 @@ static const char *file_prefix;
static uint32_t snaplen = RTE_MBUF_DEFAULT_BUF_SIZE;
static bool dump_bpf;
static bool show_interfaces;
+static bool print_stats;
static bool select_interfaces;
const char *interface_arg;
@@ -113,6 +114,7 @@ static void usage(void)
" don't capture in promiscuous mode\n"
" -D, --list-interfaces print list of interfaces and exit\n"
" -d print generated BPF code for capture filter\n"
+ " -S print statistics for each interface once per second\n"
"\n"
"Stop conditions:\n"
" -c <packet count> stop after n packets (def: infinite)\n"
@@ -337,7 +339,7 @@ static void parse_opts(int argc, char **argv)
int option_index, c;
for (;;) {
- c = getopt_long(argc, argv, "a:b:c:dDf:ghi:nN:pPqs:vw:",
+ c = getopt_long(argc, argv, "a:b:c:dDf:ghi:nN:pPqSs:vw:",
long_options, &option_index);
if (c == -1)
break;
@@ -406,6 +408,9 @@ static void parse_opts(int argc, char **argv)
case 's':
snaplen = get_uint(optarg, "snap_len", 0);
break;
+ case 'S':
+ print_stats = true;
+ break;
case 'w':
output_name = optarg;
break;
@@ -427,6 +432,39 @@ signal_handler(int sig_num __rte_unused)
__atomic_store_n(&quit_signal, true, __ATOMIC_RELAXED);
}
+
+/* Instead of capturing, it tracks interface statistics */
+static void statistics_loop(void)
+{
+ struct rte_eth_stats stats;
+ char name[RTE_ETH_NAME_MAX_LEN];
+ uint16_t p;
+ int r;
+
+ printf("%-15s %10s %10s\n",
+ "Interface", "Received", "Dropped");
+
+ while (!__atomic_load_n(&quit_signal, __ATOMIC_RELAXED)) {
+ RTE_ETH_FOREACH_DEV(p) {
+ if (rte_eth_dev_get_name_by_port(p, name) < 0)
+ continue;
+
+ r = rte_eth_stats_get(p, &stats);
+ if (r < 0) {
+ fprintf(stderr,
+ "stats_get for port %u failed: %d (%s)\n",
+ p, r, strerror(r));
+ return;
+ }
+
+ printf("%-15s %10"PRIu64" %10"PRIu64"\n",
+ name, stats.ipackets,
+ stats.imissed + stats.ierrors + stats.rx_nombuf);
+ }
+ sleep(1);
+ }
+}
+
/* Return the time since 1/1/1970 in nanoseconds */
static uint64_t create_timestamp(void)
{
@@ -834,6 +872,16 @@ int main(int argc, char **argv)
if (TAILQ_EMPTY(&interfaces))
set_default_interface();
+ signal(SIGINT, signal_handler);
+ signal(SIGPIPE, SIG_IGN);
+
+ enable_primary_monitor();
+
+ if (print_stats) {
+ statistics_loop();
+ exit(0);
+ }
+
r = create_ring();
mp = create_mempool();
out = create_output();
@@ -841,11 +889,6 @@ int main(int argc, char **argv)
start_time = create_timestamp();
enable_pdump(r, mp);
- signal(SIGINT, signal_handler);
- signal(SIGPIPE, SIG_IGN);
-
- enable_primary_monitor();
-
if (!quiet) {
fprintf(stderr, "Packets captured: ");
show_count(0);