[dpdk-dev] [PATCH v2] examples/qos_meter: fix unchecked return value

[Michal Jastrzebski]

From: Slawomir Mrozowicz <slawomirx.mrozow...@intel.com>

Fix issue reported by Coverity.

Coverity ID 30693: Unchecked return value
check_return: Calling rte_meter_srtcm_config without checking return value.

Fixes: e6541fdec8b2 ("meter: initial import")

Signed-off-by: Slawomir Mrozowicz <slawomirx.mrozowicz at intel.com>
---
 examples/qos_meter/main.c | 15 ++++++++++-----
 examples/qos_meter/main.h |  2 +-
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/examples/qos_meter/main.c b/examples/qos_meter/main.c
index b968b00..16b0b87 100644
--- a/examples/qos_meter/main.c
+++ b/examples/qos_meter/main.c
@@ -133,14 +133,17 @@ struct rte_meter_trtcm_params app_trtcm_params[] = {

 FLOW_METER app_flows[APP_FLOWS_MAX];

-static void
+static int
 app_configure_flow_table(void)
 {
        uint32_t i, j;
+       int ret = 0;

-       for (i = 0, j = 0; i < APP_FLOWS_MAX; i ++, j = (j + 1) % 
RTE_DIM(PARAMS)){
-               FUNC_CONFIG(&app_flows[i], &PARAMS[j]);
-       }
+       for (i = 0, j = 0; i < APP_FLOWS_MAX;
+                       i ++, j = (j + 1) % RTE_DIM(PARAMS))
+               ret |= FUNC_CONFIG(&app_flows[i], &PARAMS[j]);
+
+       return ret;
 }

 static inline void
@@ -381,7 +384,9 @@ main(int argc, char **argv)
        rte_eth_promiscuous_enable(port_tx);

        /* App configuration */
-       app_configure_flow_table();
+       ret = app_configure_flow_table();
+       if (ret < 0)
+               rte_exit(EXIT_FAILURE, "Invalid configure flow table\n");

        /* Launch per-lcore init on every lcore */
        rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
diff --git a/examples/qos_meter/main.h b/examples/qos_meter/main.h
index 530bf69..54867dc 100644
--- a/examples/qos_meter/main.h
+++ b/examples/qos_meter/main.h
@@ -51,7 +51,7 @@ enum policer_action 
policer_table[e_RTE_METER_COLORS][e_RTE_METER_COLORS] =
 #if APP_MODE == APP_MODE_FWD

 #define FUNC_METER(a,b,c,d) color, flow_id=flow_id, pkt_len=pkt_len, time=time
-#define FUNC_CONFIG(a,b)
+#define FUNC_CONFIG(a, b) 0
 #define PARAMS app_srtcm_params
 #define FLOW_METER int

-- 
1.9.1