[dpdk-dev] [RFC v1 1/3] ethdev: add the Rx/Tx burst description field in queue information

[Haiyue Wang]

Since each PMD has different Rx/Tx burst capabilities such as Vector,
Scattered, Bulk etc, adding the Rx/Tx burst description field in queue
information to provide apps current configuration of PMD Rx/Tx burst.

This is a self-description for each PMD in its own format.

Signed-off-by: Haiyue Wang <haiyue.wang at intel.com>
---
 lib/librte_ethdev/rte_ethdev.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index dc6596b..bc48c0c 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -1192,6 +1192,9 @@ struct rte_eth_dev_info {
 	struct rte_eth_switch_info switch_info;
 };
 
+/** Maximum information length to describe the PMD RX/TX functions */
+#define RTE_PMD_BURST_INFO_SIZE	128
+
 /**
  * Ethernet device RX queue information structure.
  * Used to retrieve information about configured queue.
@@ -1201,6 +1204,8 @@ struct rte_eth_rxq_info {
 	struct rte_eth_rxconf conf; /**< queue config parameters. */
 	uint8_t scattered_rx;       /**< scattered packets RX supported. */
 	uint16_t nb_desc;           /**< configured number of RXDs. */
+	char burst_info[RTE_PMD_BURST_INFO_SIZE];
+	/**< Description of PMD RX function, such as Vector, Scattered etc */
 } __rte_cache_min_aligned;
 
 /**
@@ -1210,6 +1215,8 @@ struct rte_eth_rxq_info {
 struct rte_eth_txq_info {
 	struct rte_eth_txconf conf; /**< queue config parameters. */
 	uint16_t nb_desc;           /**< configured number of TXDs. */
+	char burst_info[RTE_PMD_BURST_INFO_SIZE];
+	/**< Description of PMD TX function, such as Vector, Scattered etc */
 } __rte_cache_min_aligned;
 
 /** Maximum name length for extended statistics counters */
-- 
2.7.4