app/testpmd: check statistics query before printing

In function 'fwd_stats_display', if function 'rte_eth_stats_get' fails,
'stats' is uncertainty value. The display result will be abnormal.

This patch check the return value of 'rte_eth_stats_get' to avoid
display abnormal stats.

Fixes: 53324971a1 ("app/testpmd: display/clear forwarding stats on demand")
Cc: stable@dpdk.org

Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Acked-by: Aman Singh <aman.deep.singh@intel.com>
This commit is contained in:
Min Hu (Connor) 2022-04-06 16:45:36 +08:00 committed by Ferruh Yigit
parent ec16914942
commit baef6bbfad
2 changed files with 22 additions and 4 deletions

View File

@ -249,14 +249,20 @@ nic_stats_display(portid_t port_id)
diff_ns;
uint64_t mpps_rx, mpps_tx, mbps_rx, mbps_tx;
struct rte_eth_stats stats;
static const char *nic_stats_border = "########################";
int ret;
if (port_id_is_invalid(port_id, ENABLED_WARN)) {
print_valid_ports();
return;
}
rte_eth_stats_get(port_id, &stats);
ret = rte_eth_stats_get(port_id, &stats);
if (ret != 0) {
fprintf(stderr,
"%s: Error: failed to get stats (port %u): %d",
__func__, port_id, ret);
return;
}
printf("\n %s NIC statistics for port %-2d %s\n",
nic_stats_border, port_id, nic_stats_border);

View File

@ -1982,6 +1982,7 @@ fwd_stats_display(void)
struct rte_port *port;
streamid_t sm_id;
portid_t pt_id;
int ret;
int i;
memset(ports_stats, 0, sizeof(ports_stats));
@ -2013,7 +2014,13 @@ fwd_stats_display(void)
pt_id = fwd_ports_ids[i];
port = &ports[pt_id];
rte_eth_stats_get(pt_id, &stats);
ret = rte_eth_stats_get(pt_id, &stats);
if (ret != 0) {
fprintf(stderr,
"%s: Error: failed to get stats (port %u): %d",
__func__, pt_id, ret);
continue;
}
stats.ipackets -= port->stats.ipackets;
stats.opackets -= port->stats.opackets;
stats.ibytes -= port->stats.ibytes;
@ -2108,11 +2115,16 @@ fwd_stats_reset(void)
{
streamid_t sm_id;
portid_t pt_id;
int ret;
int i;
for (i = 0; i < cur_fwd_config.nb_fwd_ports; i++) {
pt_id = fwd_ports_ids[i];
rte_eth_stats_get(pt_id, &ports[pt_id].stats);
ret = rte_eth_stats_get(pt_id, &ports[pt_id].stats);
if (ret != 0)
fprintf(stderr,
"%s: Error: failed to clear stats (port %u):%d",
__func__, pt_id, ret);
}
for (sm_id = 0; sm_id < cur_fwd_config.nb_fwd_streams; sm_id++) {
struct fwd_stream *fs = fwd_streams[sm_id];