[dpdk-dev] [PATCH v10 1/6] ethdev: new API to resolve device capability name

[Xueming Li]

This patch adds API to return name of device capability.

Signed-off-by: Xueming Li <xuemi...@nvidia.com>
---
 lib/ethdev/rte_ethdev.c | 30 ++++++++++++++++++++++++++++++
 lib/ethdev/rte_ethdev.h | 14 ++++++++++++++
 lib/ethdev/version.map  |  3 +++
 3 files changed, 47 insertions(+)

diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index bc55f899f72..97217529449 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -165,6 +165,20 @@ static const struct {
 
 #undef RTE_TX_OFFLOAD_BIT2STR
 
+#define RTE_ETH_DEV_CAPA_BIT2STR(_name)        \
+       { RTE_ETH_DEV_CAPA_##_name, #_name }
+
+static const struct {
+       uint64_t offload;
+       const char *name;
+} rte_eth_dev_capa_names[] = {
+       RTE_ETH_DEV_CAPA_BIT2STR(RUNTIME_RX_QUEUE_SETUP),
+       RTE_ETH_DEV_CAPA_BIT2STR(RUNTIME_TX_QUEUE_SETUP),
+       RTE_ETH_DEV_CAPA_BIT2STR(RXQ_SHARE),
+};
+
+#undef RTE_ETH_DEV_CAPA_BIT2STR
+
 /**
  * The user application callback description.
  *
@@ -1260,6 +1274,22 @@ rte_eth_dev_tx_offload_name(uint64_t offload)
        return name;
 }
 
+const char *
+rte_eth_dev_capability_name(uint64_t capability)
+{
+       const char *name = "UNKNOWN";
+       unsigned int i;
+
+       for (i = 0; i < RTE_DIM(rte_eth_dev_capa_names); ++i) {
+               if (capability == rte_eth_dev_capa_names[i].offload) {
+                       name = rte_eth_dev_capa_names[i].name;
+                       break;
+               }
+       }
+
+       return name;
+}
+
 static inline int
 eth_dev_check_lro_pkt_size(uint16_t port_id, uint32_t config_size,
                   uint32_t max_rx_pkt_len, uint32_t dev_info_size)
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index 34acc91273d..df8ef9382a9 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -2109,6 +2109,20 @@ const char *rte_eth_dev_rx_offload_name(uint64_t 
offload);
  */
 const char *rte_eth_dev_tx_offload_name(uint64_t offload);
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Get RTE_ETH_DEV_CAPA_* flag name.
+ *
+ * @param capability
+ *   Capability flag.
+ * @return
+ *   Capability name or 'UNKNOWN' if the flag cannot be recognized.
+ */
+__rte_experimental
+const char *rte_eth_dev_capability_name(uint64_t capability);
+
 /**
  * Configure an Ethernet device.
  * This function must be invoked first before any other function in the
diff --git a/lib/ethdev/version.map b/lib/ethdev/version.map
index efd729c0f2d..e1d403dd357 100644
--- a/lib/ethdev/version.map
+++ b/lib/ethdev/version.map
@@ -245,6 +245,9 @@ EXPERIMENTAL {
        rte_mtr_meter_policy_delete;
        rte_mtr_meter_policy_update;
        rte_mtr_meter_policy_validate;
+
+       # added in 21.11
+       rte_eth_dev_capability_name;
 };
 
 INTERNAL {
-- 
2.33.0