Added error reporting for dag_stats()

diff --git a/pcap-dag.c b/pcap-dag.c
index 661f7b41a31cd57c8f55ab5a8796e04126d67a75..5d5b6c10318b47ab38e5daf6a8325b7267a4d2e8 100644 (file)
--- a/pcap-dag.c
+++ b/pcap-dag.c
@@ -1065,6 +1065,7 @@ static int
 dag_stats(pcap_t *p, struct pcap_stat *ps) {
        struct pcap_dag *pd = p->priv;
        uint32_t stream_drop;
+       dag_err_t dag_error;
 
        /*
         * Packet records received (ps_recv) are counted in dag_read().
@@ -1077,10 +1078,12 @@ dag_stats(pcap_t *p, struct pcap_stat *ps) {
                /* Note this counter is cleared at start of capture and will wrap at UINT_MAX.
                 * The application is responsible for polling ps_drop frequently enough
                 * to detect each wrap and integrate total drop with a wider counter */
-               if (dag_config_get_uint32_attribute_ex(pd->dag_ref, pd->drop_attr, &stream_drop) == kDagErrNone) {
+               if ((dag_error = dag_config_get_uint32_attribute_ex(pd->dag_ref, pd->drop_attr, &stream_drop) == kDagErrNone)) {
                        pd->stat.ps_drop = stream_drop;
                } else {
-                       /* Currently not reporting errors reading stats */
+                       pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "reading stream drop attribute: %s",
+                                dag_config_strerror(dag_error));
+                       return -1;
                }
        }