ethdev: get xstats ID by name

[dpdk.git] / lib / librte_ether / rte_ethdev.c

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 0a012cc..5bc78c0 100644 (file)
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -1383,6 +1383,50 @@ get_xstats_count(uint8_t port_id)
        return count;
 }
 
+int
+rte_eth_xstats_get_id_by_name(uint8_t port_id, const char *xstat_name,
+               uint64_t *id)
+{
+       int cnt_xstats, idx_xstat;
+
+       RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+
+       if (!id) {
+               RTE_PMD_DEBUG_TRACE("Error: id pointer is NULL\n");
+               return -ENOMEM;
+       }
+
+       if (!xstat_name) {
+               RTE_PMD_DEBUG_TRACE("Error: xstat_name pointer is NULL\n");
+               return -ENOMEM;
+       }
+
+       /* Get count */
+       cnt_xstats = rte_eth_xstats_get_names_by_id(port_id, NULL, 0, NULL);
+       if (cnt_xstats  < 0) {
+               RTE_PMD_DEBUG_TRACE("Error: Cannot get count of xstats\n");
+               return -ENODEV;
+       }
+
+       /* Get id-name lookup table */
+       struct rte_eth_xstat_name xstats_names[cnt_xstats];
+
+       if (cnt_xstats != rte_eth_xstats_get_names_by_id(
+                       port_id, xstats_names, cnt_xstats, NULL)) {
+               RTE_PMD_DEBUG_TRACE("Error: Cannot get xstats lookup\n");
+               return -1;
+       }
+
+       for (idx_xstat = 0; idx_xstat < cnt_xstats; idx_xstat++) {
+               if (!strcmp(xstats_names[idx_xstat].name, xstat_name)) {
+                       *id = idx_xstat;
+                       return 0;
+               };
+       }
+
+       return -EINVAL;
+}
+
 int
 rte_eth_xstats_get_names_by_id(uint8_t port_id,
        struct rte_eth_xstat_name *xstats_names, unsigned int size,